JPH09143855A - Thread-supporting apparatus of sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the setting of a wound yarn after removing a spool holder base from a supporting member and to enable easy and efficient attaching of a spool holder base holding a wound yarn on an embroidery machine. SOLUTION: A needle head 2 having plural sewing needles 20 is supported above a table 13 for setting a work W. A spool holder base 3 of a sewing machine to supply a thread S to plural sewing needles 20 is detachably attached to a supporting member 76 attached to a machine body to obtain the objective thread-supporting apparatus of a sewing machine. The spool holder base 3 is divided into sections each having an arm spool pin 30 corresponding to one of the plural needle heads 2. Handles 30 higher than the wound yarn S1 are erected at both sides of the spool holder base 3 to enable the stacking of other spool holder base 3 on the handle 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread supporting device for a sewing machine such as an embroidery machine or an industrial sewing machine having a thread stand on which a winding thread is placed.

[0002]

2. Description of the Related Art Conventionally, an embroidery machine, which is a sewing machine as described above, is provided with a thread feeding device at the back of a needle head having a plurality of sewing needles installed above a table. The device implants a number of thread stand bars for winding thread stand corresponding to the above-mentioned plurality of sewing needles on a thread stand stand configured on a horizontal frame for attaching a needle head, and is set on this thread stand stand. It is configured such that the thread is unwound and supplied from each winding thread to each sewing needle. Then, when the winding thread is unwound due to the sewing operation and needs to be replenished with a new winding thread,
Alternatively, when it is desired to replace the winding yarn with another one, the worker moves from the work-friendly side to the yarn stand side installed behind the machine body to perform the winding yarn setting work.

[0003]

However, in the embroidery machine having the above-mentioned conventional structure, when the thread is set, the operator moves to the back of the machine away from the work side during the embroidery work and It is necessary to replace each new winding thread with the winding thread in the previous process on the thread stand bar that is erected on the thread stand that is fixed to It is necessary to check the remaining amount of winding thread during embroidery work and to check the thread guiding condition and its troubles, etc. There are drawbacks in that the field of view is blocked by the yarn adjusting device and the like, making it difficult to visually recognize, and that the monitoring work, the handling work, and the yarn changing work for the yarn modulation and the feeding trouble are neglected. On the other hand, in the case of an embroidery machine equipped with a needle head having a plurality of sewing needles, the thread stand constituted by the lateral frame is also large and large, and the weight thereof is heavy, so that its supporting structure is complicated and difficult to manufacture. There are problems such as sex.

[0004]

A thread supporting device for a sewing machine according to the present invention for achieving the above object is provided with a work W.
The needle head 2 having a plurality of sewing needles 20 is supported above the table 13 for setting the
In a sewing machine provided with a thread stand 3 for supplying the thread S to the above, the thread stand 3 is detachably attached to a support member 76 provided in the machine body 1a.

Further, the thread stand 3 is divided and formed so as to have a thread stand bar 30 corresponding to each of a plurality of needle heads 2, and a plurality of preliminary thread stand 3 having the same shape as the divided thread stand 3. It is characterized by having.

On both sides of the thread stand 3, a handle 30 formed higher than the height of the winding thread S1 is erected, and the handle 3
It is characterized in that another thread stand 3 can be stacked on top of 0.

Further, a supporting member 76 for supporting the thread stand 3.
Is provided on the same front surface side as the working portion side of the needle head 2 so that it can be moved up and down.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes an embroidery machine of a needle head multi-head type according to an embodiment of a sewing machine.
This embroidery machine 1 comprises left and right support legs 10 connected by upper and lower horizontal frames 11 and 12 to form a machine body frame 1a. On the front side of the embroidery work side, a work W such as cloth to be embroidered is attached. A table 13 to be set is horizontally installed forward, and 12 needle heads 2 having a large number of sewing needles 20 are installed on a horizontal frame 11 above the table 13 at predetermined intervals. The needle head 2 in the illustrated example shows an embroidery head provided with nine sewing needles 20, and each needle 20 is appropriately threaded and guided by a thread adjusting device 4 using a conventional means. .

Above the table 13 and in front of the above-mentioned group of needle heads 2, winding threads S1 obtained by winding a thread S for sewing or embroidery around a core cylinder are vertically supported by the number of needles of each needle head 2. The yarn stand 3 is configured as a yarn feeding device 5 which will be described later, and the yarn stand 3 is provided so as to be vertically movable through its lifting mechanism 5a. Further, the thread stand 3 and the needle head 2
The yarn adjusting device 4 is attached and installed above the horizontal frame 11 in correspondence with each needle head 2. Reference numeral 1b denotes a control box provided on the right side of the embroidery machine 1 for operating the embroidery machine 1.

Next, the structure of the yarn feeding device 5 will be described with reference to FIGS. The yarn feeding device 5 includes a yarn supporting device 3A having a plurality of yarn stands 3 to be described later, and a predetermined number of yarn guides 6 for feeding and guiding the yarn S from the yarn supporting device 3A.
And a thread guide device 6A attached thereto, both of which are attached to attachment frames 70 and 71 which are laterally provided between the elevating frames 7 of the elevating mechanism 5a formed on both sides of the machine body and are integrally formed together. It is configured to be able to move up and down. The elevating frame 7 has a proper number of guide rollers 72 projecting vertically and forward and backward so as to be slidably fitted in the guide grooves 50 of the elevating mechanism 5a, and at the upper and lower ends of the left and right elevating frames 7. Both ends of the lifting chain 73 are fixed. Reference numeral 75 is a rope fixed to the upper end of the elevating frame 7, and the rope 75 is connected to the winding attachment force device 7b attached to the back of the embroidery machine 1 to assist the upward movement of the yarn feeding device 5. I am trying to do it.

As shown in FIG. 2, the elevating mechanism 5a is constructed such that the front and rear columns 51 and 52 are framed in a rectangular shape by the upper and lower horizontal rods 53 and 54, and are detachably attached to the outside of both side supporting legs 10 of the machine body. The guide groove 5 for slidingly guiding the guide rollers 72 of the elevating frame 7 by the support column 51 and the guide plate 55.
0 is formed in the vertical direction. And the horizontal rods 53, 54
The sprocket 53a, 54a is arranged on the upper and lower portions of the guide groove 50, and the elevating chain 73 is wound around the sprocket 54a, 5a on both left and right sides.
4a to a drive shaft 56 that is horizontally mounted below the horizontal frame 11.
And the drive shaft 56 is driven by the drive motor M so as to be rotatable in the forward and reverse directions.

Reference numeral 57 denotes an operation box for freely performing operations such as forward and reverse rotations of the drive motor M and stopping operation in a manual mode and an automatic mode. By this operation, the position of the thread stand 3 of the yarn feeding device 5 is set to the maximum. Thread set position X indicated by the solid line lowered
In addition, the operation can be stopped at any position of the retracted position Z that is raised to the maximum and the intermediate work monitoring position Y shown by the dotted line. In the guide groove 50, a stopper 59 that projects so as to be retractable as the yarn feeding device 5 moves up and down.
Is installed, and the yarn feeding device 5 is
It is possible to prevent accidental descent at each operation stop position.

Next, referring to FIGS. 3 to 5, the yarn support device 3A
The configuration of the yarn feeding device 5 including the yarn guide device 6A and the like will be described. In the yarn support device 3A, the yarn stand 3 is detachably attached to a plurality of support arms (supporting members) 76 protruding from the lower part of the elevating frame 7 to the front. The thread stand 3 in this embodiment has a thread stand bar 3 corresponding to each needle head 2.
0 are grouped so as to form a group of thread-placing rods 30a erected for each number of needles, and the same number of thread-placing rod groups 30 are provided for each appropriate number of needle heads 2.
.. a in a plurality of groups standing on one thread stand 3 (in the illustrated example, three groups of thread stand bars 30a, ... Corresponding to the three needle heads 2 are set up). It is divided into three units. Then, an appropriate number of preliminary thread stand 3 having the same shape as the thread stand 3 formed separately is prepared.

As shown in FIGS. 5 and 6, the thread stand 3
Is a plate-shaped thread stand frame 32 on which the thread stand bar 30 is erected.
On both right and left sides, a handle 33 having a U-shape in a side view is provided upright, and the height of the handle 33 is set to be higher than the height of the winding thread S1 mounted on the thread stand 30 in an upright manner. . The front and rear ends of the thread stand frame 32 are bent to the back side, and the engaging portions 35 are provided on both sides of the lower surface thereof so as to engage with the support portions 77a of the installation portions 77 provided on the support arms (support members) 76 described later. The engaging portion 35 is formed so as to be recessed, and the head portion of the handle 33 is positioned so as to be engageable when the thread stand 3 is piled up in a shelf shape as shown in FIG. .

Further, the above thread stand base 3 is prepared as the number of spare thread stand bases 3 to be set in the yarn support device 3A, so that the number of winding yarns S1 necessary for the next step can be set on this spare thread stand base 3. Can be set in advance and the winding thread S1
The auxiliary arm stand 7 of the embroidery machine 1 is obtained by stacking the preliminary thread stand 3 with the
Since the thread stand 3 can be easily and efficiently attached to the thread 6 at once, thread replenishment work and management work can be easily performed.

On the other hand, as shown in FIG. 5, the support arm 76 has a support portion 77 on its upper surface which meshes with the engagement portion 35 of the thread stand 3.
The installation portion 77 is provided by projecting two a's.
By forming an elastic member 7 made of rubber or plastic material, the adjacent thread stand 3 can be easily attached and detached individually from above. Thereby, in a state where the thread stand 3 is placed on the support arm 76, it is possible to favorably support the thread stand 3 without displacement due to vibration of the embroidery machine 1 or the like, and the winding thread S1 does not violently vibrate. it can. The attachment / detachment support means for attaching the thread stand 3 to the support arm 76 is not limited to this embodiment, and may be constituted by other means such as screwing.

In the thread guide device 6A, the base portion of the thread guide 6 formed of a flexible, accordion-shaped tubular tube is attached to a mounting rod 40 provided above the thread adjusting device 4 by means of a mounting tool 60. While being attached and fixed, the other end of the lifting frame 7 is located above the opposing thread stand 3 while the middle side is curved upward.
Of the mounting rod 71b ...
It is attached and fixed with 0. As a result, when the yarn feeding device 5 moves up and down to change the position of the yarn adjusting device 4, the yarn S
With the thread inserted into the thread guide 6, the thread feeding device 5
Since the distance of the yarn stretched between the yarn adjusting device 4 and the yarn adjusting device 4 is not substantially changed, the guide is satisfactorily guided in a state where slack and entanglement with other yarn S are prevented.

Further, as shown in FIG. 4, the thread guide 6 is formed by continuously forming a large number of guide pieces 6G formed in the shape of smooth projections on the inner surface of the tubular tube. The guide pieces 6G form the sewing needle 20 of the needle head 2. The thread S stretched between the thread stand 3 and the thread stand 3 is guided so as to be in point contact with the thread stand 3 so that it can be smoothly guided and guided in a state where the feeding resistance is as small as possible. The initial threading to the thread guide 6 is performed by the winding thread S1.
In a state in which the unthreaded yarn S is inserted into the inlet 6p of the yarn guide 6, it may be inserted through the yarn passing tool 6W toward the outlet 6t.

That is, the threading tool 6W in this embodiment can use an air gun, and by blowing air from the inlet 6p of the thread guide 6 into the thread guide 6, the thread S is placed on the air stream to be threaded. The thread can be easily and accurately threaded in the guide 6. The threading means may be performed by using a threading tool such as a wire. In this case, the thread guide 6 can be point-contacted without necessarily forming the thread guide 6 in a bellows-like cylindrical tube. A configuration may be such that a plurality of rings that guide the user are installed.

On the thread stand 3 side of the thread guide 6, that is, on the inlet 6p side, thread holding means 6H for releasably fixing the end of the thread S inserted into the sewing needle 20 of the needle head 2. When the sewing needle 20 is in a resting state, the end of the thread S inserted through the sewing needle 20 is retained in the thread guide 6 while maintaining the posture in which it is detachably fastened at the inlet 6p side. I am able to do it. Thus, when the sewing needle 20 is to be used again, the thread S inserted through the sewing needle 20 is removed from the thread holding means 6H, and the thread S is used as a thread, and the next thread S end By performing the pulling operation so that the thread guide 6 and the needle hole of the sewing needle 20 are inserted in a state in which the thread is tied, the initial threading as described above is not required and can be easily performed.

In the thread holding means 6H shown in FIG. 4 (A), the magnet plate 61 is attached to the mounting frame 71b ... so that the plurality of threads S corresponding to each needle head 2 can be freely locked. In addition, a mounting plate 62 made of a metal plate having a grip portion is provided so as to be magnetically attached to the magnet plate 61, and the thread S is held between the two. Further, the thread holding means 6H shown in FIG. 7C is provided with a locking tool having an appropriate structure for releasably fixing the thread S to each entrance 6p of each thread guide 6, and for example, the thread holding means 6H A hook-shaped locking tool 63 may be provided by a means such as making a cut in the guide 6, and the end of the thread S may be sandwiched and locked by the locking tool 63.

The operation of the embroidery machine 1 equipped with the yarn feeding device 5 constructed as described above is performed by operating the operation box 57 to lower the yarn feeding device 5 to the yarn setting position X in advance. The thread stand base 3 in which the winding threads S1 ...
The thread S of each winding thread S1 is placed on the thread 6 to be positioned and supported, and the thread S of each winding thread S1 is guided from the inlet 6p to the thread guide 6 by the threading means.
After being inserted into the inside, and fed out to the outlet 6t, the yarn feeding device 5 is raised to the work monitoring position Y or the retreat position Z to open the upper side of the table 13 on the front side of the needle head 2 and the conventional embroidery machine 1. By the same procedure, the thread is hooked on the thread adjusting device 4, the thread is passed through the needle 20 through the sewing needle 20, and then the work box W is set on the table 13 and the control box 1b is operated to operate the sewing needle. 20 and the table 13 are operated to perform sewing work such as embroidery.

At this time, the operator does not move to the rear part of the embroidery machine 1 when setting the winding thread S1 as in a conventional embroidery machine, and the thread stand 3 is placed on the sewing work side so that the needle head 2 Place it in a low position close to the front of the table 13,
Since the work can be performed in a comfortable posture, the replenishing work for individually replacing the winding thread S1 can be performed easily and efficiently. After the above work is completed, the yarn feeding device 5 is raised so that the yarn support device 3A and the yarn guide device 6A are integrally separated from the table 13, and the table 13 is moved. Since the needle head 2 part can be exposed while being released, the thread S fed from the thread guide 6 can be hooked on the thread adjusting device 4 and the needle head 2 or the sewing needle 20 without interfering with the thread feeding device 5. It is possible to easily carry out the threading work to the table 13 and to freely carry out the work of setting the work W on the table 13 and the inspection and repair work.

Further, since the thread feeding device 5 can stop and maintain the thread stand 3 at the work monitoring position Y at an intermediate arbitrary height, at this position, the sewing condition of the work W and the thread stand bar 30 are maintained.
It is possible to monitor simultaneously the feeding situation of the winding thread S1 set in the same position, and to accurately detect the sewing and thread feeding troubles, and to quickly perform the coping work. There is. Further, in this state, since the replenishing operation of the thread S can be easily performed while monitoring the sewing operation, it is possible to prevent troubles such as missing the yarn replenishing time.

In the above work, the yarn support device 3
The thread stand 3 supported by the support member 76 of A is divided into an appropriate number, and each divided thread stand 3 is at least on both left and right sides of the thread stand frame 32 on which the thread stand bar 30 is erected. Since the handle 33 formed to be higher than the height of the winding thread S1 set on the thread stand bar 30 is provided upright and a plurality of preliminary thread stand 3 are prepared, the embroidery work is automatically performed. While the winding thread S1 required for the next step can be set on the preliminary thread stand 3 while the winding thread S1 is being supplied, a plurality of needle heads 2, 2, ... The thread stand 3 having S1 set thereon can be mounted accurately and quickly only by mounting and positioning it on the support member 76 in a state where the thread stand 3 having the winding thread S1 in the previous step is easily removed. .

Further, as shown in FIG. 6, when the thread stand 3 is prepared for storage or work, the engaging portion 3 formed on the thread stand frame 32 on the handles 33, 33 of the lower thread stand 3.
5, 5 and 35 can be properly positioned by engaging with each other, so that a plurality of thread stand bases 3, 3, ... Can be stacked in a stable manner in multiple stages, and the installation space for the spare thread stand base 3 can be saved. Along with being able to do various kinds of winding thread S
Since 1 can be neatly organized and displayed in a state of being displayed in a shelf shape, thread management can be easily performed without error.

At this time, the engaging portion 35 of the thread stand 3 is preferably formed to have the same shape as the interval of the supporting portions 77a of the supporting member 76. In this case, the mounting portion of the thread stand 3 and the grip 33 are formed. Since it can also serve as the overlapping portion, it has an advantage that it can be manufactured inexpensively with a simple structure. Further, since the thread stand 3 which is divided for each of the plurality of needle heads 2 and can be easily attached and detached can be reduced in weight, the attachment structure of the support member 76 can be manufactured in a simple structure, and at the same time, it can be manufactured. The lifting operation can be easily performed. In addition, the thread supporting device of this sewing machine can be applied to the embroidery machine having the thread stand on the back of the conventional needle head 2 by forming the supporting member 76 on the horizontal frame 11, for example. Like the present embodiment, it can be configured with a simple configuration.

As described above, the feeding device 5 is mounted with the lifting mechanism 5a via the lifting frames 7 and 7, and the supporting frame is provided by extending the lifting mechanism 5a from the embroidery machine 1 toward the upper front side. With the suspension structure, it is possible to retrofit the embroidery machine to a conventional embroidery machine easily and at a low cost without requiring a large amount of modification. The feeding device 5 does not necessarily have to be integrally installed on the embroidery machine 1 itself, but the lifting mechanism 5a or the hanging member 73 may be different from the embroidery machine 1 such as the ceiling of a building as shown by the dotted line in FIG. It may be configured by mounting via another mounting frame body 1T. In this case, it is possible to omit members such as stanchions of the elevating mechanism, and in the same manner as described above, for conventional embroidery machines. However, it has a feature that it can be retrofitted more easily, and that the transmission of vibration on the embroidery machine 1 side to the yarn feeding device 5 can be suppressed.

[0029]

According to the present invention, the following technical effects can be obtained by the above-described configuration. According to the invention of claim 1,
A thread stand that supplies threads to a plurality of sewing needles is detachably attached to a support member, so that the winding thread can be easily set on a plurality of thread stand bars with good workability while the thread stand is removed from the support member. In addition, the thread stand on which the winding thread is set can be easily attached to the embroidery machine, so that the thread replenishment work can be efficiently performed.

According to the invention of claim 2, the thread stand is divided and formed so as to have a thread stand bar for each of a plurality of needle heads, and
By using the preliminary thread stand having the same shape as this, the thread replenishment work can be performed at once for each of the plurality of needle heads. Further, even during the embroidery work, there is an advantage that the winding thread necessary for the next step can be set and prepared in advance on the auxiliary thread stand.

According to the invention of claim 3, since the handles are provided on both sides of the thread stand, it is possible to easily carry the thread stand and attach / detach it to / from the supporting member of the embroidery machine. Further, since the height of the handle is formed to be higher than the height of the winding yarn, it is possible to stack other thread stand on the handle, so that the winding yarn can be managed satisfactorily while saving space. .

According to the invention of claim 4, since the thread stand, which is detachably mounted on the support member, is provided so as to be able to move up and down on the same sewing work side as the working portion side of the needle head, thread mounting and replenishing work and the like can be performed. It can be easily and efficiently performed on the sewing side. Further, after the above work is completed, the thread stand can be switched from the thread setting position to the retracted position, so that the thread hooking work, the work setting and the sewing work can be favorably performed, and the monitoring of these is also good. Can be done.

[Brief description of the drawings]

FIG. 1 is a front view of an embroidery machine including a feeding device according to the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a side view showing a main part of the feeding device.

FIG. 4A is a perspective view showing a main part of the yarn guide device.
(B) is a cross-sectional view of the thread guide. FIG. 6C is a cross-sectional view showing another embodiment of the yarn holding means.

FIG. 5A is a front view showing a set state of the thread stand.
(B) is a side view of the same figure (A).

FIG. 6 is a perspective view showing a state in which the thread stand is stacked in a shelf shape.

FIG. 7 is a plan view of the thread stand.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Embroidery machine 2 Needle head 3 Thread stand 3A Thread support device 4 Thread adjusting device 5 Thread feeding device 5a Elevating mechanism 6 Thread guide 6A Thread guide device 7 Elevating frame 13 Table 20 Sewing needle 30 Thread stand bar 33 Handle 35 Engaging part 76 Support arm (support member) 77 Installation part 77a Support part S Thread W Work X Thread setting position Y Work monitoring position Z Retreat position

Claims (4)

[Claims] A table (1) for setting a work (W).
A sewing machine including a needle head (2) having a plurality of sewing needles (20) above the sewing machine (3) and a thread stand (3) for supplying the threads (S) to the plurality of sewing needles (20). 2. A thread support device for a sewing machine, wherein the thread stand (3) is detachably attached to a support member (76) provided on the machine body (1a). 2. The thread stand (3) is divided so as to have a thread stand bar (30) corresponding to each of a plurality of needle heads (2), and has the same shape as the divided thread stand (3). 2. The thread support device for a sewing machine according to claim 1, further comprising a plurality of spare thread stand (3). 3. A handle (30) formed higher than the height of the winding thread (S1) is erected on both sides of the thread stand (3), and another thread stand (3) is provided on the handle (30). 2. The thread supporting device for the sewing machine according to claim 1, wherein the thread supporting device is configured to be stacked. 4. A support member (7) for supporting the thread stand (3).
The thread feeding device for a sewing machine according to claim 1 or 2, wherein 6) is provided on the same front surface side as the working portion side of the needle head (2) and can be raised and lowered.