TW201608080A - Feed arm type sewing machine - Google Patents

Abstract

This invention is a feed arm type sewing machine which offers an operator the maintainable operability during fabric feeding; moreover, the arm type sewing machine can also target a piercing area of a sewing needle for high visibility as well as making adjustment and mount/dismount operations of a thread cam to be performed easier. A machine base of a barrel 3 and a machine arm 4 is formed by a first base 2, a first connecting section 6, a second base 7, and a second connecting section 8. The base of the first connecting section 6 is connected to the upper right side of the first base 2 where barrel 3 connects; furthermore, the upper front portion of the first connecting section 6 of the base extends upward and connects to the base of the second base 7. The rear side of the second base 7 which is at the right extension from the second base 7 is connected to the horizontally extended base of the machine arm 4 via the second connecting section 8. The under stitch bobbin 41 is fixated at the left end of a protruded lower axle 20 which is on the left side 2c of the first base 2.

Description

Send arm sewing machine

The present invention relates to a delivery arm type sewing machine, and more particularly to a frame structure and a suture releasing mechanism for a delivery arm type sewing machine that feeds a cloth in a direction in which the barrel extends.

In the present invention, the front and rear refers to the front-rear direction of the cloth feeding direction, and the left and right refers to the left-right direction when the sewing machine is viewed from the front. In addition, the up and down means the vertical direction of the sewing machine.

In the case of such a delivery arm type sewing machine, a machine in which the barrel and the arm extend from the base in a direction in which the arm and the arm extend in the past has been known (for example, Patent Document 1). 6 to 8 are views showing the appearance of the sewing machine body 11 of the conventional delivery arm type sewing machine disclosed in Patent Document 1, FIG. 6 is a left side view of the sewing machine, FIG. 7 is a plan view of the sewing machine, and FIG. 8 is a front view of the sewing machine. . In addition, FIG. 9 is an enlarged cross-sectional view of the suture releasing mechanism of the conventional delivery arm type sewing machine disclosed in Patent Document 1.

As shown in Fig. 6, the barrel 13 extends from the base 12 toward the cloth feeding direction F. The arm 14 is such that its base rests on the base 12 while extending horizontally in a direction intersecting the barrel 13. The front end portion of the arm 14 is bent toward the front end side of the barrel 13 as shown in Fig. 7, and the head 15 is connected to the front end of the arm 14. The head portion 15 is disposed above the needle plate 16 provided on the front end of the barrel 13.

A needle bar or a pressing lever (not shown) protrudes from the lower surface of the head portion 15. The needle bar is fixed with a plurality of pins, and the pressing bar is fixed with a presser foot 17. The presser foot 17 is provided with upper and lower scalpels (upper and lower scalpels) and an upper fancy stitch spreader (not shown). Further, the barrel 13 is provided with feeding teeth, a looper, and the like (not shown).

As shown in Fig. 7, a main shaft 10 (upper shaft) is disposed in the arm 14 along the extending direction of the arm 14. One end of the head 15 near the main shaft 10 protrudes outside the arm 14, and one end of the main shaft 10 is provided with a manual pulley 29 (manual wheel). The manual pulley 29 is wound with a motor belt (not shown), whereby power of a sewing machine drive source (not shown) is transmitted to the spindle 10, and when the sewing machine is stopped, the operator can operate the hand to rotate the spindle 10.

A needle bar drive mechanism, a cutter drive mechanism, an upper decorative suture splitter drive mechanism, and the like, which are not shown, are coupled to the head portion 15 side of the spindle 10, and the needle, the cutter, and the upper decorative slit are rotated by the rotation of the spindle 10. The line splitter is driven. Further, a plurality of eccentric rods (not shown) are coupled to the base side of the arm 14 of the main shaft 10, and the eccentric rods are connected to a feed tooth drive mechanism or a hook drive mechanism (not shown) disposed in the base 12. Further, the feed tooth or the wire hook is driven by the rotation of the main shaft 10.

Further, as shown in FIG. 9, the delivery arm type sewing machine is provided with a suture release cam chamber 30 so that the cover 31 covers the upper surface in the extending direction of the arm 14. The suture release cam chamber 30 is provided with a lower suture release mechanism including a lower suture release cam 32 and an upper suture release mechanism including an upper suture release cam 33. The lower suture release mechanism is used to control Release of the line hook stitch for the lower stitch. The upper suture release mechanism is used to control the release of the upper decorative suture as the upper suture. The two suture release cams 32, 33 are fixed to the middle of the main shaft 10 in the suture release cam chamber 30 in the arm 14, respectively. In response to the rotation of the spindle 10, the two suture release cams 32, 33 also rotate.

In the conventional delivery arm type sewing machine constructed as described above, the cloth loaded on the upper surface of the barrel 13 is fed to the front end side of the barrel 13 (that is, the cloth feeding direction F), the needle, the thread hook and the upper side. The components such as the decorative suture splitter cooperate with each other to perform the sewing operation. The delivery arm type sewing machine disclosed in Patent Document 1 is mainly used for abutting a pair of right and left cloth ends of two sheets of cloth or a tubular cloth to partially overlap, and forming a double-line lock stitch step or Flat interlocking stitches.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2011-62273 (Fig. 1-2)

However, the suture releasing cams 32, 33 must be fixed to the full-rotation type shaft, whereas the conventional delivery arm type sewing machine has only the main shaft 10 in the frame configuration as a full-rotation type shaft. Further, since the respective driving mechanisms are coupled to the head portion 15 side of the main shaft 10 or the base portion side of the arm 14, the suture releasing cams 32 and 33 are fixed in the middle of the main shaft 10. In this configuration, when the thread hook line of the outer peripheral surface of the cam 32, 33 is released or the upper decorative stitch is accidentally broken and wound around the main shaft, the line hook stitch or the upper decoration is removed. When the suture is broken or the suture releasing cams 32 and 33 are broken and replaced with a new suture releasing cam, the attachment/detachment operation of the suture releasing cams 32 and 33 is difficult.

Further, in the conventional delivery arm type sewing machine, the operability of the cloth loaded on the upper surface of the barrel 13 by the operator or the visual observation of the vicinity of the punctured area of the bur from the base of the arm 14 standing on the base 12 is observed. The identification is not hindered. Generally, the suture release cams 32, 33 are disposed inside the arm 14, and the cover 31 is opened from the upper surface of the arm 14 to perform a line hook stitch on the line hook or the upper decorative stitch pair. The adjustment of the supply amount and tension of the decorative suture splitter. However, in such a configuration, there is a problem that the above-described adjustment work is accompanied by difficulty.

The present invention has been made in order to solve the above problems, and an object thereof is to provide operability in maintaining an operation of a cloth by an operator, and high visibility of a punctured area of a bur, and attachment/removal work or adjustment work of a suture releasing cam. The frame structure of the delivery arm type sewing machine and the suture release mechanism can be easily performed.

In order to achieve the above object, the invention described in claim 1 is a delivery arm type sewing machine comprising: a barrel having a base end connected to the base and extending in a cloth feeding direction; and an arm having a base coupled to the machine a seat extending horizontally in a direction intersecting the barrel; and a head portion connected to the front end of the arm and disposed above the front end of the barrel, characterized in that: a first base is connected to the barrel; a connecting portion having a base connected to an upper right side surface of the first base and extending upward; and a second base having a base connected to an upper end of the first connecting portion and to the right The second connecting portion is connected to the rear surface of the second base and connected to the base of the arm; the upper shaft is disposed in the arm along the extending direction of the arm and supports the winding. The shaft rotates; the intermediate shaft is disposed in the second base along the extending direction of the second base, and is supported to be rotatable about the shaft and rotates in conjunction with the upper shaft; the lower shaft is from the first The upper portion of the base is disposed to be orthogonal to the cloth feeding direction across the first connecting portion, and is supported to be rotatable about the axis, and rotates in conjunction with the intermediate shaft; and the lower suture releasing cam is fixed to the first machine One end of the protruding lower shaft or one end of the shaft that rotates in conjunction with the lower shaft and protrudes from the first base, the base is composed of the first base, the first connecting portion, and The second base and the second connecting portion are configured.

In order to achieve the above object, the invention described in claim 2 is a delivery arm type sewing machine comprising: a barrel having a base end connected to the base and extending toward the cloth feeding direction; and an arm having a base coupled to the machine a seat extending horizontally in a direction intersecting the barrel; and a head portion connected to the front end of the arm and disposed above the front end of the barrel, characterized in that: a first base is connected to the barrel; a connecting portion having a base connected to an upper right side surface of the first base and extending upward; and a second base having a base connected to an upper end of the first connecting portion and extending to the right; the second connecting a portion connected to the rear of the second base and coupled to the base of the arm; the upper shaft is disposed in the arm along the extending direction of the arm and supported to be rotatable about the axis; the intermediate shaft, Arranged along the extending direction of the second base in the second base, and supported to be rotatable about the axis, and rotated in conjunction with the upper shaft; the lower shaft The first base portion is disposed so as to be orthogonal to the cloth feeding direction from the upper portion of the first base, and is supported to be rotatable about the axis, and rotates in conjunction with the intermediate shaft; the upper stitch releases the shaft toward Extending in a direction intersecting the intermediate shaft, one end of which protrudes from a rear surface of the second base; a power transmission mechanism that transmits rotation of the intermediate shaft to the upper suture release shaft; and an upper suture release cam that is fixed at The upper suture discharges one end of the protruding shaft, and the base is composed of the first base, the first connecting portion, the second base, and the second connecting portion.

According to a third aspect of the invention, in the delivery arm sewing machine of claim 2, the power transmission mechanism includes: a worm fixed to the intermediate shaft; and a worm wheel fixed to the upper suture release shaft and meshed with the worm.

The invention of claim 4, wherein the first arm is wound around a right side of the lower shaft and a left side of the intermediate shaft, and a second belt is wound around the feed belt sewing machine of claims 1 to 3; The shaft is opposite to each of the aforementioned intermediate shafts.

According to the invention of claim 5, in the delivery arm type sewing machine of claim 4, the first connection portion is inclined rearward as it extends upward.

According to the present invention, since the arm is not based on the base, the operator can improve the visibility of the punctured area of the bur, and the crotch of the right side of the first stand can be sufficiently ensured, so the operator's right hand can It protrudes into the top of the barrel without any hindrance, and it does not damage the operator's workability.

Moreover, in the above, the operator's operability is maintained and the purpose can be improved. In the visible sewing machine body shape, the suture releasing cam is fixed to the shaft end portion protruding from the machine base, so that the attachment/detachment operation or the adjustment work of the suture releasing cam can be easily performed.

1‧‧‧Sewing machine body

2‧‧‧1st base

2a‧‧‧1st stand above

2b‧‧‧1st front seat

2c‧‧‧1st left side of the base

2d‧‧‧ behind the first stand

3‧‧‧ barrel

4‧‧‧ arm

5‧‧‧ head

6‧‧‧1st link

7‧‧‧2nd base

8‧‧‧2nd link

9‧‧‧ needle board

9a‧‧‧needle puncturing area

18‧‧‧Upper axis

19‧‧‧Intermediate axis

20‧‧‧ Lower shaft

21‧‧‧1st belt

22‧‧‧2nd belt

36‧‧‧Upper decorative stitch line splitter

37‧‧‧Wire hook

41‧‧‧ Lower suture release cam

42‧‧‧Upper suture release shaft

43‧‧‧ worm

44‧‧‧ worm gear

45‧‧‧Upper suture release cam

F‧‧‧Fabric feed direction

Fig. 1 is a schematic perspective view of the sewing machine body of the delivery arm type sewing machine of the present invention.

Fig. 2 is a schematic left side view of the sewing machine body of the sewing machine.

Fig. 3 is a schematic top view of the sewing machine body of the sewing machine.

Fig. 4 is a schematic view of the sewing machine body of the sewing machine as viewed from the front side.

Fig. 5 is a schematic perspective view of the sewing machine body of the delivery arm type sewing machine of another embodiment.

Figure 6 is a left side view of the sewing machine body of a conventional delivery arm type sewing machine.

Fig. 7 is a partially cutaway plan view showing the sewing machine body of the sewing machine.

Figure 8 is a front elevational view of the sewing machine body of the sewing machine.

Fig. 9 is an enlarged cross-sectional view showing the suture releasing mechanism of the sewing machine.

[Formation of the Invention]

Hereinafter, the sewing machine main body 1 according to the embodiment of the present invention will be described with reference to the drawings. Further, the portion forming the outer casing of the sewing machine body 1 is indicated by a 2-point chain line. The base end of the barrel 3 is connected to the lower portion 2d of the first base 2, and the front end of the barrel 3 extends horizontally in the cloth feeding direction F. A needle plate 9 is disposed on the front end portion of the barrel 3, and the needle plate 9 is provided. On the top, there is a needle puncturing area 9a. As shown in Fig. 2, the first base 2 has a five-corner shape as viewed from the left side, and the upper portion of the front surface 2b is inclined toward the cloth feeding direction F (i.e., rearward) as it extends upward. Further, the upper surface 2a of the first base 2 is inclined downward (that is, rearward and downward) as it goes toward the cloth feeding direction F.

As shown in FIG. 1 and FIG. 3, the upper right side surface of the first base 2 is connected to the base of the first connecting portion 6, and the first connecting portion 6 is inclined rearward from the base portion and extends upward. The lower surface of the base portion of the first joint portion 6 is positioned at a position higher than the upper surface of the barrel 3. The upper front end of the first joint portion 6 is connected to the base of the second base 7, and the second base 7 extends horizontally from the base to the right. The extending direction of the second base 7 is orthogonal to the cloth feeding direction F.

The rear side of the second base 7 is connected to one end of the second connecting portion 8, and the other end of the second connecting portion 8 is connected to the front surface of the base of the arm 4. The arm 4 extends from the base to the left (i.e., the side of the barrel 3), and the left end is connected to the head 5. The head 5 is positioned above the needle plate 9 provided on the upper portion of the barrel 3. Each of the head 5 or the barrel 3 is provided with a mechanism for forming a stitch, and a plurality of needles or pressers (not shown) are disposed below the head 5, but these elements are known in the prior art. The description of the technology is omitted. The front of the arm 4 is provided with a suture guiding member for controlling the movement of the suture or guiding the movement of the suture.

As shown in FIG. 1 or FIG. 3, the extending direction of the arm 4 is also orthogonal to the cloth feeding direction F. That is, the arm 4 and the second base 7 are arranged in parallel. Further, the arm 4, the second connecting portion 8, and the second base 7 are connected as viewed from above. "Glyph."

In the arm 4, along the extending direction of the arm 4 Upper shaft 18. The upper shaft 18 is supported on the arm 4 in a pivotable manner, the right end of which protrudes from the right side of the arm 4 and the left end of which protrudes into the head 5. A motor 23 as a drive source of the sewing machine body 1 is attached to the right side surface of the arm 4, and the right end of the upper shaft 18 is coupled to a motor shaft (not shown) of the motor 23.

In the second base 7, an intermediate shaft 19 is disposed along the extending direction of the second base 7. The intermediate shaft 19 is rotatably supported by the second base 7, and the right end thereof protrudes rightward from the right side of the second base 7, and the right end of the projection is provided with a manual wheel 24.

The lower shaft 20 is disposed in the left-right direction from the upper portion of the first base 2 across the lower portion of the first connecting portion 6. The lower shaft 20 is rotatably pivoted, and the right end and the left end are supported by the first joint portion 6 and the first base 2, respectively. As shown in FIGS. 1 to 4, the upper shaft 18, the intermediate shaft 19, and the lower shaft 20 are parallel to each other and are arranged to be orthogonal to the cloth feed direction F. At the same time, the upper shaft 18 and the intermediate shaft 19 are positioned at the same height, and the lower shaft 20 is disposed at a lower position than the upper shaft 18 and the intermediate shaft 19.

A pulley 25 is fixed to the right end side of the arm 4 of the upper shaft 18, and a pulley 26 is fixed to the right end side of the second base 7 of the intermediate shaft 19. The second belt 22 passes through the second joint portion 8 and is wound around the upper shaft 18 and the intermediate shaft 19 via the pulley 25 and the pulley 26 .

A pulley 27 is fixed to the left end side of the intermediate shaft 19, and a pulley 28 is fixed to the right end side of the first connecting portion 6 of the lower shaft 20. The first belt 21 is disposed along the extending direction of the first connecting portion 6 and is wound around the intermediate shaft 19 and the lower shaft 20 via the pulley 27 and the pulley 28 .

The upper shaft 18 is coupled to each of the drive mechanisms of the needle bar, the cutter, and the upper decorative suture splitter 36 (not shown) in the arm 4 or in the head 5. Furthermore, The lower shaft 20 is coupled to each of the driving mechanisms such as the feeding teeth or the wire hooks 37 (not shown) via the plurality of eccentric rods (not shown) in the first housing 2 . When the upper shaft 18 is rotated by the driving of the motor 23, the rotation of the upper shaft 18 is transmitted to the lower shaft 20 via the second belt 22, the intermediate shaft 19, and the first belt 21, and the lower shaft 20 and the upper shaft 18 are rotated in synchronization. . The upper decorative suture splitter 36 is oscillated in the punctured area 9a in conjunction with the upper shaft 18, and the line hook 37 is oscillated below the needle plate 9 in the barrel 3 in conjunction with the lower shaft 20.

Next, the lower suture release mechanism will be described. The left end of the lower shaft 20 protrudes from the left side surface 2c of the first base 2. The lower suture releasing cam 41 is fixed to the left end of the lower shaft 20 outside the first base 2, and rotates together with the lower shaft 20. The thread hook line of the lower suture is supplied to the thread hook 37 by the lower suture releasing cam 41 and the lower suture releasing cam 41 to control the suture release by the suture supply source (not shown).

Next, the upper suture release mechanism will be described. In the second base 7, the upper suture release shaft 42 is disposed below the intermediate shaft 19 and extends in a direction crossing the intermediate shaft 19. The upper suture release shaft 42 is rotatably supported by the second base 7 and its rear end protrudes from the rear surface 7a of the second base 7. The upper suture releasing cam 45 is fixed to the rear end of the upper suture releasing shaft 42 outside the second housing 7. A worm 43 is fixed to the middle of the intermediate shaft 19. A worm wheel 44 that meshes with the worm 43 is fixed to the front end side of the upper suture release shaft 42. With the above configuration, the upper suture releasing cam 45 rotates together with the intermediate shaft 19 in conjunction with the upper suspending shaft 42. The upper decorative suture as the upper suture is controlled by a suture supply source (not shown) via the upper suture release cam 45 and the suture release cam 45 to control the release of the suture, and is supplied to the upper decorative suture splitter 36. In this embodiment, although The worm 43 and the worm wheel 44 serve as a power transmission mechanism, but are not limited thereto.

In the delivery arm type sewing machine including the sewing machine main body 1 configured as described above, when the operator performs the sewing operation, the operator faces the front surface 2b of the first base 2, and the operator's eyes are substantially the same as the upper surface of the arm 4. Height, or above the arm 4. At this time, as shown in FIG. 4, the upper side of the first base 2 is not erected like the conventional delivery arm type sewing machine, so that the operator can pass over the upper surface 2a of the first base 2 above the arm 4. It is easy to see the vicinity of the needle puncturing area 9a of the needle board 9. Therefore, the operator does not have to bring the body closer to the sewing machine body 1 in order to look at the burr-punching area 9a, and the operator's body does not come into contact with the first base 2 of the sewing machine body 1, etc., so that there is no heat or vibration generated by the sewing machine body 1. Passage to the operator's body, causing adverse effects on the operator.

Further, as shown in FIG. 4, the right side of the first base 2 does not have a portion that is connected to the arm 4 except for the upper portion, and the connected portion is not present on the lower right side of the first connecting portion 6. That is, the right side of the first base 2 is wide enough, and the structure of the sewing machine body 1 is the elbow of the right arm when the operator projects the right hand onto the barrel 3 to feed the cloth to the burr area 9a. It is not easy to touch the sewing machine body 1 in the front or even the upper arm, and there is no possibility of impeding the operator's workability.

Further, as long as the upper surface 2a of the first base 2 is inclined rearward and downward as in the embodiment, the field of view on the front side of the burring area 9a is wide from the operator's view, so that the bur is fixed. The visual recognition near the puncture area 9a is further enhanced. In addition, the upper portion of the first base front surface 2b or the first connecting portion 6 is configured to be inclined rearward as it extends upward, and the feeling of pressure on the operator is reduced, and the operator even faces the face. When the burr area 9a is approached, the operator's body does not easily hit the sewing machine body 1.

Further, in the above-described conventional example, the manual wheel (manual pulley 29) is disposed at the front end of the main shaft 10 on the head portion 15 side of the arm 14 (that is, on the opposite side of the operator of the arm 14), not in the operator. Easy to operate position. On the other hand, in the present embodiment, since the manual wheel 24 is attached to the right end of the intermediate shaft 19, the manual wheel 24 is disposed on the right side surface of the second base 7, and is easy to operate and safe for the operator.

As described above, the sewing machine body 1 of the present embodiment can maintain the sewing workability of the operator, and at the same time, can improve the visibility of the burr area of the burr by the operator, and greatly secure the space inside or on the surface of the cradle. In the sewing machine main body 1 having such a shape, the lower suture releasing cam 41 is fixed to the left end of the lower shaft 20 projecting from the left side surface 2c of the first base 2, and the operator can easily attach the lower suture releasing cam 41/ Remove the job or adjust the job. Moreover, since the arrangement position of the lower shaft 20 is lower than that of the upper shaft 18 disposed on the arm 4, the lower suture releases the cam 41 to the line hook as compared with the conventional example (that is, the structure fixed to the upper shaft). Closer distance. That is, the suture line from the lower suture line releasing the cam 41 to the line hook 37 is short, so that it is not easily affected by the suture stretching characteristics, and the lower suture releasing cam 41 can correctly control the line suture line. release.

On the other hand, in the upper suture release cam 45, the intermediate shaft 19, the upper suture release shaft 42, the worm 43, the worm wheel 44, the upper suture release cam 45, and the upper suture release cam are disposed and coupled by the above-described intermediate shaft 19. Since the 45 series is fixed to the rear end of the upper suture release shaft 42 that protrudes from the rear surface 7a of the second base 7, the attachment/detachment operation or the adjustment work of the upper suture release cam 45 can be easily performed. Further, as described above, the arm 4 and the second base 7 are arranged in parallel, and the second connecting portion 8 is connected to the right side of the both sides. In the structure of the font, the arrangement space of the upper suture release cam 45 can be sufficiently ensured in the rear surface 7a of the second base 7.

Hereinafter, another embodiment of the present invention will be described with reference to Fig. 5 . In the other embodiments of the present invention, the same components as those of the sewing machine shown in Figs. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. In the first base 2, a lower suture release shaft 51 is disposed below the lower shaft 50, and extends in a direction intersecting the lower shaft 50. The lower suture release shaft 51 is rotatably supported by the first base 2, and the rear end is protruded from the rear 2d of the first base 2. The lower suture releasing cam 54 is fixed to the rear end of the lower suture releasing shaft 51 outside the first housing 2. A worm 52 is fixed to the middle of the lower shaft 50. A worm wheel 53 that meshes with the worm 52 is fixed to the front end side of the lower suture release shaft 51. With the above configuration, the lower suture releasing cam 54 is interlocked with the lower shaft 50 and rotates together with the lower suture releasing shaft 51. According to the above configuration, other embodiments of the present invention can achieve the same effects as those of the above embodiment.

Further, the present invention is not limited to the above-described embodiments. For example, the delivery arm type sewing machine in which the respective portions of the sewing machine body 1 are disposed symmetrically with respect to each other does not escape the object of the present invention, and the same effects as those of the above-described embodiments can be obtained.

1‧‧‧Sewing machine body

2‧‧‧1st base

2a‧‧‧1st stand above

2b‧‧‧1st front seat

2c‧‧‧1st left side of the base

2d‧‧‧ behind the first stand

3‧‧‧ barrel

4‧‧‧ arm

5‧‧‧ head

6‧‧‧1st link

7‧‧‧2nd base

7a‧‧‧ behind the second base

8‧‧‧2nd link

9‧‧‧ needle board

9a‧‧‧needle puncturing area

18‧‧‧Upper axis

19‧‧‧Intermediate axis

20‧‧‧ Lower shaft

21‧‧‧1st belt

22‧‧‧2nd belt

23‧‧‧Motor

24‧‧‧Manual wheel

25‧‧‧ Pulley

26‧‧‧ Pulley

27‧‧‧ Pulley

28‧‧‧ Pulley

36‧‧‧Upper decorative stitch line splitter

37‧‧‧Wire hook

41‧‧‧ Lower suture release cam

42‧‧‧Upper suture release shaft

43‧‧‧ worm

44‧‧‧ worm gear

45‧‧‧Upper suture release cam

F‧‧‧Fabric feed direction

Claims (5)

A delivery arm type sewing machine comprising: a barrel having a base end connected to the base and extending toward the cloth feed direction; the arm, the base being coupled to the base and extending horizontally in a direction crossing the barrel; and a head It is connected to the front end of the arm and disposed above the front end of the barrel, and is characterized in that: a first base is connected to the barrel; and a first connecting portion is connected to an upper portion of the upper portion of the first base. The second base has a base connected to the upper end of the first connecting portion and extends to the right, and the second connecting portion is connected to the rear of the second base and coupled to the arm. a base; an upper shaft disposed in the extending direction of the arm in the arm and supported to be rotatable about the axis; and an intermediate shaft extending along the extending direction of the second base in the second base Arranged and supported to be rotatable about the axis and rotatable in conjunction with the upper shaft; the lower shaft is disposed orthogonally from the upper portion of the first base and across the first connecting portion in a direction in which the cloth is fed, and is supported to be rotatable The shaft rotates and rotates in conjunction with the aforementioned intermediate shaft; a wire releasing cam fixed to one end of the lower shaft protruding from the first base or one end of a lower suture protruding shaft that rotates in conjunction with the lower shaft and protrudes from the first base, the base is The first base, the first connecting portion, the second base, and the second connecting portion are configured. A delivery arm type sewing machine, comprising: a barrel, the base end of which is connected to the base and extends toward the feeding direction of the cloth; the base of the arm is connected to the base and extends horizontally in a direction crossing the barrel; and the head, It is connected to the front end of the arm and disposed above the front end of the barrel, and is characterized in that: a first base is connected to the barrel; and the first connecting portion is The base portion is connected to the upper right side surface of the first base and extends upward; the second base has a base connected to the upper end of the first connecting portion and extends to the right; and a second connecting portion connected to the second connecting portion a rear portion of the second base is coupled to a base of the arm; an upper shaft disposed in the arm in a direction in which the arm extends and supported to be rotatable about an axis; and an intermediate shaft in the foregoing The second base is disposed along the extending direction of the second base and supported to be rotatable about the axis and rotatable in conjunction with the upper shaft; the lower shaft extends from the upper portion of the first base to the first connecting portion Arranging orthogonally to the cloth feed direction and supported to be rotatable about the axis and rotating in conjunction with the intermediate shaft; the upper suture release shaft extending in a direction intersecting the intermediate shaft, one end from the second base a rearward protruding; a power transmission mechanism that transmits rotation of the intermediate shaft to the upper suture release shaft; an upper suture release cam fixed at an end of the protruding end of the upper suture release shaft, the base is The first base and the first joint The second stand and the second connecting portion is constituted. The delivery arm type sewing machine according to claim 2, wherein the power transmission mechanism includes a worm that is fixed to the intermediate shaft, and a worm wheel that is fixed to the upper suture release shaft and meshes with the worm. The delivery arm sewing machine according to any one of claims 1 to 3, further comprising: a first belt wound around a right side of the lower shaft and a left side of the intermediate shaft; and a second belt wound around the upper shaft and the aforementioned The right side of each of the intermediate shafts. The delivery arm type sewing machine of claim 4, wherein the first connecting portion is inclined rearward as it extends upward.