JPH0681478U - Multi-needle embroidery sewing machine - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a multi-needle embroidery sewing machine in which the thread tension and the thread winding are moved together with the moving head. [Structure] A fixed head 16 is attached to the front of the beam 15, a moving head 20 provided with a balance 23, a needle bar 24 and a needle 25 is attached to the front of the fixed head 16, and a thread stand 32 is provided on the upper part of the beam 15. Also, the moving bracket 28 provided with the thread tension mounting plate on which the thread guides 38 and 39 and the thread tension 40 are mounted is mounted. Then, the connecting member 43 fixed to the lower end of the moving bracket 28 is fixed to the drive shaft 42 that moves the moving head 20, and the moving head 20 and the moving bracket 28 are moved together. In the multi-needle embroidery sewing machine configured as described above, the upper thread 33a from the thread winding 33 is not pulled or loosened between the thread tension and the moving head 20, so that the upper thread 33a is cut less and the workability is improved. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a multi-needle embroidery sewing machine that moves a thread tension and a thread winding together with a moving head.

[0002]

[Prior art]

 Conventionally, as a multi-needle embroidery sewing machine, as shown in FIGS. 3 and 4, a thread winding base 2 is mounted on an upper portion of a sewing machine main body 1, and a thread guide 4 is provided on a support rod 3 provided on the thread winding base 2. Further, it is known that the sewing machine main body 1 is equipped with a moving head 8 provided with a large number of balances 5, needle bars 6 and needles 7, and a thread tensioner 9 is provided above the moving head 8 in correspondence with the balance 5. (See Japanese Utility Model Publication No. 3-17835).

[0003]

[Problems to be solved by the device]

 However, in this multi-needle embroidery sewing machine, since the bobbin winding base 2 is fixed, the upper thread 10a between the thread tension member 9 and the bobbin thread 10 is pulled or loosened, so that the tension of the upper thread slightly changes. However, there was a problem that the thread was apt to be cut while the sewing condition was affected.

[0004]

[Means for Solving the Problems]

 According to the present invention, a large number of fixed heads fixed to the front part of the beam and rails that engage with rollers provided in each of the fixed heads are provided, and a sewing machine driving unit provided in each of the fixed heads is used. Moving heads provided with respective balances and needle bars to be driven, driving shafts connected to the respective moving heads for moving the moving heads together, and driving the driving shafts according to embroidery stitches. A control device, a moving bracket having a thread tension, a thread guide and a thread winding corresponding to the balance on each of the moving heads, and the moving bracket connected to the drive shaft so as to move together with the moving head. The connecting member and the roller and the guide portion provided on the beam are respectively provided.

[0005]

[Action]

 In the present invention, when the drive shaft is driven by the sewing machine drive unit in accordance with the embroidery stitch, the moving head and the moving bracket can be moved at the same time, so that the upper thread from the bobbin provided on the moving bracket is sub thread tensioned. The needle thread does not have to be pulled or loosened due to the movement of the moving head and the moving bracket while it is being passed through the thread guide and thread tension, and sent to the needle attached to the needle bar through the balance. Not only that, there is less needle thread cutting, so workability is good.

Further, since the connecting member of the moving bracket is connected to the drive shaft for driving the moving head, if the connecting member is loosened, it has the same structure as a conventional multi-needle embroidery sewing machine that moves only the moving head. can do.

[0007]

【Example】

 1 is an overall perspective view of a multi-needle embroidery sewing machine according to an embodiment of the present invention, FIG. 2 is a partial sectional side view of FIG. 1, and FIG. 3 is a front view of a portion of FIG. An embroidery frame 12 that is movable back and forth and left and right is provided on the upper portion, and a controller 13 and a sewing machine drive unit 14 are attached to the end portion of the sewing machine base 11.

Further, a beam 15 is fixed to a rear portion of the sewing machine base 11, a fixed head 16 is mounted on an upper portion of an embroidery frame 12 on a front surface of the beam 15, a main shaft 17 is penetrated through the fixed head 16, and a vertical shaft is formed. Rails 21 and 22 of the moving head 20 are engaged with rollers 18 and 19 provided in the.

A balance 23 and a needle bar 24 to which a needle 25 is attached are attached to the moving head 20, and the balance 23 and the needle bar 24 are driven by the rotation of the main shaft 17, but this drive device is omitted. There is.

A mounting base 26 is fixed to the upper part of the beam 15, a guide 27 is fixed to the mounting base 26, and a guide portion 29 of a moving bracket 28 is slidably engaged with the guide 27. There is.

Further, a rail 30 is fixed to an upper portion of the beam 15, and a roller 31 fixed to a moving bracket 28 is placed on the rail 30, and the moving bracket 28 is fixed to the beam 15 by a guide portion 29 and a roller 31. It is configured so that it can move in parallel with.

The thread stand bars 32 are fixed to the upper part of the beam 15 of the moving bracket 28 by the number of the needle bars 25, and the thread spools 33 are rotatably provided on the thread stand bars 32, respectively. Thread guides 35 are provided on the upper beam members 34 corresponding to the needle bars 24 of the moving head 20, and auxiliary thread tensioners 36 are provided on the tip ends of the beam members 34 corresponding to the needle bars 24, respectively.

Further, a thread tension mounting plate 37 is provided above the moving head 20 of the moving bracket 28, and thread guides 38 and 39 are fixed to the upper stage and the second stage of the thread tension mounting plate 37. The thread tensions 40 are fixed in two rows below the second thread guide 39, and the thread guide 41 is provided below the thread tension 40. However, the number of the thread tension 40 and the thread guides 38, 39, 41 is different. Are provided corresponding to the needle bars 24 of the moving head 20.

A drive shaft 42 is connected so as to pass through each of the moving heads 20, and one end of this drive shaft 42 is connected to the sewing machine drive portion 14 and is fixed to each lower end of the moving bracket 28. The lower ends of the connecting members 43 are fixed to the drive shafts 42, respectively.

In the multi-needle embroidery sewing machine of this embodiment configured as described above, the upper thread 33 a drawn from the thread winding 33 mounted on the thread stand bar 32 passes from the thread guide 35 through the auxiliary thread tensioner 36, After being threaded on the thread guides 38, 39, threaded on the thread tension 40, and further threaded through the thread guide 41 to the beam hole of the needle 24 of the needle bar 25 from the balance 23, the sewing machine drive section 14 is used. When the drive shaft 42 is moved by the stitches of the embroidery set by the controller 13 and the moving head 20 is moved, the embroidery frame 12 on the sewing machine base 11 is also moved by the stitches of the embroidery and attached to the embroidery frame 12. The embroidered fabric can be embroidered.

Since the moving head 20 and the moving bracket 28 are both driven by the drive shaft 42, the bobbin winder 33, the auxiliary thread tensioner 36, the thread tensioner 40 and the moving head 20 are moved together, and thus the upper thread from the bobbin winder 33 is moved. 33a is not pulled or loosened by the movement of the moving head 20, the number of breaks of the upper thread 33a is reduced, and the workability is improved.

In the multi-needle embroidery sewing machine of the present invention, only the moving head 20 can be moved by loosening the connecting member 43 of the moving bracket 28, and the same construction as the conventional multi-needle embroidery sewing machine is used. You can

[0018]

[Effect of device]

 As described above, in the multi-needle embroidery sewing machine of the present invention, since the moving bracket provided with the thread tension and the thread winding moves together with the moving head, the upper thread is not pulled or loosened, and Since cutting is reduced, there is an advantage that workability is very good.

[Submission date] June 23, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content] [Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a multi-needle embroidery sewing machine that moves a thread tension and a thread winding together with a moving head.

[0002]

[Prior art]

 Conventionally, as a multi-needle embroidery sewing machine, as shown in FIGS. 4 and 5, a thread winding base 2 is mounted on an upper portion of a sewing machine main body 1, and a thread guide 4 is provided on a support rod 3 provided on the thread winding base 2. Further, it is known that the sewing machine main body 1 is equipped with a moving head 8 provided with a large number of balances 5, needle bars 6 and needles 7, and a thread tensioner 9 is provided above the moving head 8 in correspondence with the balance 5. (See Japanese Utility Model Publication No. 3-17835).

[0003]

[Problems to be solved by the device]

 However, in this multi-needle embroidery sewing machine, since the thread winding base 2 is fixed, the upper thread 10a between the thread tensioner 9 and the thread winding 10 is pulled or loosened abnormally due to the movement of the moving head when changing colors. Therefore, there is a problem that the tension of the upper thread changes subtly, which affects the sewing condition and causes the thread to be entangled or to cause cutting.

[0004]

[Means for Solving the Problems]

 The present invention provides a sewing machine having a plurality of fixed heads fixed to the front part of a beam and guide rails engaged with rollers provided on each of the fixed heads, and each of the fixed heads. A moving head provided with a balance and a needle bar, which are respectively driven by a driving unit, a moving shaft connected to each moving head for moving each of the moving heads, and the moving shaft on an embroidery seam. And a moving bracket in which each of the moving heads is provided with a thread tension corresponding to the balance, a thread guide and a thread winding, and a moving bracket for moving the moving bracket together with the moving head. A connecting member for connecting, and a roller and a guide rail provided on the beam are provided respectively.

[0005]

[Action]

 In the present invention, the moving head and the moving bracket can be moved at the same time by moving the moving shaft according to the shade of the embroidery thread by the sewing machine moving section. There is no tension or slack in the upper thread due to the movement of the moving head and the moving bracket while it passes through the main / sub thread tension and thread guide and is sent to the needle attached to the needle bar through the balance. There is no effect on the sewing condition, and you can get a good product.

Further, since the connecting member of the moving bracket is connected to the moving shaft for moving the moving head, if the connecting member is loosened, the same structure as a conventional multi-needle embroidery sewing machine that moves only the moving head can be obtained. can do.

[0007]

【Example】

 1 is an overall perspective view of a multi-needle embroidery sewing machine according to an embodiment of the present invention, FIG. 2 is a partial sectional side view of FIG. 1, and FIG. 3 is a front view of a portion of FIG. An embroidery frame 12 that can be moved back and forth, left and right is provided on the upper portion, and a controller 13 and a sewing machine moving unit 14 are attached to the end of the sewing machine base 11.

Further, a beam 15 is fixed to a rear portion of the sewing machine base 11, a fixed head 16 is mounted on an upper portion of an embroidery frame 12 on a front surface of the beam 15, and a main shaft 17 penetrates the fixed head 16 and passes through a gear. Rails 21 and 22 of the moving head 20 are engaged with rollers 18 and 19 which transmit rotation and which are provided above and below, respectively.

A balance 23 and a needle bar 24 to which a needle 25 is attached are attached to the moving head 20, and the balance 23 and the needle bar 24 are driven by the rotation of the main shaft 17, but this drive device is omitted. There is.

A mounting base 26 is fixed to the upper part of the beam 15, a guide 27 is fixed to the mounting base 26, and a guide portion 29 of a moving bracket 28 is slidably engaged with the guide 27. There is.

Further, a rail 30 is fixed to an upper portion of the beam 15, and a roller 31 fixed to a moving bracket 28 is placed on the rail 30, and the moving bracket 28 is fixed to the beam 15 by a guide portion 29 and a roller 31. It is configured so that it can move in parallel with.

A thread stand bar 32 is fixed to the upper part of the beam 15 of the moving bracket 28 in a slightly larger number than the number of the needle bars 25, and a thread winding 33 is rotatably provided on each of the thread stand bars 32. A thread guide 35 is provided on the beam member 34 above the rod 32 so as to correspond to the needle bar 24 of the moving head 20, and a sub thread tension 36 is provided at the tip of the beam member 34 so as to correspond to the needle bar 24. There is.

Further, a thread tension mounting plate 37 is provided above the moving head 20 of the moving bracket 28, and thread guides 38 and 39 are fixed to the upper stage and the second stage of the thread tension mounting plate 37. The thread tensions 40 are fixed in two rows below the second thread guide 39, and the thread guide 41 is provided below the thread tension 40. However, the number of the thread tension 40 and the thread guides 38, 39, 41 is different. Are provided corresponding to the needle bars 24 of the moving head 20.

A moving shaft 42 is connected so as to pass through each of the moving heads 20, and one end of the moving shaft 42 is connected to the sewing machine moving portion 14 and is fixed to each lower end of the moving bracket 28. The lower ends of the connecting members 43 are fixed to the moving shaft 42.

In the multi-needle embroidery sewing machine of this embodiment configured as described above, the upper thread 33 a drawn from the thread winding 33 mounted on the thread stand bar 32 passes from the thread guide 35 through the auxiliary thread tensioner 36, After being threaded on the thread guides 38, 39, and threaded on the main thread tension 40, and further threaded through the thread guides 41, 41a, 41b from the balance 23 to the needle hole of the needle 25 of the needle bar 24, the sewing machine is driven. In the section 14, the moving shaft 42 moves the moving head to move the needle bar to which a predetermined color thread is applied to the operating position, and the embroidery frame 12 on the sewing machine base 11 is embroidered by the embroidery seam set by the controller 13. The stitches 23 move together, and the balance 23, the needle bar 24, the hook, etc. are synchronously driven by rotation from the main shaft, and the embroidery can be embroidered on the fabric mounted on the embroidery frame 12.

Since the moving head 20 and the moving bracket 28 are both driven by the moving shaft 42, the bobbin winder 33, the auxiliary thread tensioner 36, the main thread tensioner 40 and the moving head 20 are moved together, so that the bobbin winder 33 moves from the bobbin winder 33. The upper thread 33a is not pulled or loosened by the movement of the moving head 20, and there is no change in the thread tension such as the upper thread 33a being entangled or causing a break. Has the advantage that

In the multi-needle embroidery sewing machine of the present invention, only the moving head 20 can be moved by loosening the connecting member 43 of the moving bracket 28, and the same construction as the conventional multi-needle embroidery sewing machine is used. You can

[0018]

[Effect of device]

 As described above, in the multi-needle embroidery sewing machine of the present invention, since the moving head and the moving bracket provided with thread tension and the like move together, the upper thread is not pulled or loosened, and Since there is no change in the thread tension such as when the thread is cut, there is an advantage that workability is greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a multi-needle embroidery sewing machine according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a part of the sewing machine shown in FIG.

3 is a front view of a part of the sewing machine of FIG. 1. FIG.

FIG. 4 is a front view of a conventional multi-needle embroidery sewing machine.

5 is a side view of a portion of the sewing machine of FIG.

[Explanation of symbols]

 11 Sewing machine base 12 Embroidery frame 13 Controller 14 Sewing machine drive unit 16 Fixed head 20 Moving head 28 Moving bracket 32 Thread stand rod 32 35 Thread guide 36 Sub thread tension 37 Thread tension mounting plate 38, 39 Thread guide 40 Thread tension 41, 17 Thread Guide 42 Drive shaft 43 Connection member

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[Procedure amendment]

[Submission date] June 23, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Name of device] Multi-needle embroidery sewing machine

[Scope of utility model registration request]

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a multi-needle embroidery sewing machine according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a part of the sewing machine shown in FIG.

3 is a front view of a part of the sewing machine of FIG. 1. FIG.

FIG. 4 is a front view of a conventional multi-needle embroidery sewing machine.

5 is a side view of a portion of the sewing machine of FIG.

[Explanation of Codes] 11 Sewing machine base 12 Embroidery frame 13 Controller 14 Sewing machine drive unit 16 Fixed head 17 Main shaft 20 Moving head 28 Moving bracket 32 Thread stand bar 32 35 Thread guide 36 Sub thread tension 37 Thread tension mounting plate 38 Sub thread tension 39 Thread guide 40 Thread tension 41 Thread guide 41a, 41b Thread guide 42 Drive shaft 43 Connecting member

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (2)

[Scope of utility model registration request] 1. A plurality of fixed heads fixed to a front portion of a beam, rails engaged with rollers provided in each of the fixed heads, and a sewing machine driving section provided in each of the fixed heads. Moving heads provided with driven balances and needle bars, drive shafts connected to the moving heads for moving the moving heads, and a control device for driving the driving shafts according to embroidery stitches. A moving bracket in which each of the moving heads has a thread tension, a thread guide and a thread winding corresponding to the balance, a connecting member for connecting the moving bracket to the drive shaft so as to move together with the moving head, and the beam. A multi-needle embroidery sewing machine having a roller and a guide portion provided above. 2. The multi-needle sewing machine according to claim 1, wherein the connecting member is detachably attached to the drive shaft.