TW201536979A - Feed arm type sewing machine - Google Patents

Abstract

This invention is a feed arm type sewing machine. Maintenance of the sewing machine operability is possible. An operator is not required to go close to the sewing machine itself to perform visual inspection at the feed arm type sewing machine near a sewing needle puncturing region. The feed arm type sewing machine comprises a first machine 2, a first connection part 6, a second machine 7, and a second connection part 8 used for constructing machine in connection to a cylindrical sewing station 3 and an arm 4. The base of the first connection part 6 is connected to the upper right side of the first machine 2 of the cylindrical sewing station 2. The base of the second machine 7 is connected to the upper front part of the first connection part 6 which extends upwards from the base. The second connection part 8 is utilized to connect the base of the horizontally extended arm 4 and the rear part of the second machine 7 that extends towards right hand side from the base of the second machine 7.

Description

Send arm sewing machine

The present invention relates to a delivery arm type sewing machine, and more particularly to a delivery arm type sewing machine having a cylindrical sewing machine extending from a bed to a cloth feed direction and provided with a needle plate.

In the present invention, the front and rear directions refer to the front-rear direction of the cloth feed direction; the left and right directions refer to the left-right direction when the sewing machine is viewed from the front; and the upper and lower directions refer to the vertical direction of the sewing machine.

In the case of such a delivery arm type sewing machine, a column-shaped sewing table provided with a needle plate and a machine arm provided with a main shaft (upper shaft) are always known to extend from the machine tool in a direction in which they intersect each other (for example, Refer to Patent Document 1). 4 to 6 are views showing the external configuration of the sewing machine body 11 of the delivery arm type sewing machine disclosed in Patent Document 1, and Fig. 4 is a left side view of the sewing machine, Fig. 5 is a plan view of the sewing machine, and Fig. 6 is a view of the sewing machine. Front view of the sewing machine.

As shown in FIG. 4, the column sewing table 13 extends from the machine tool 12 toward the cloth feeding direction F. The base of the arm 14 is based on the machine tool 12 while extending horizontally in a direction crossing the column sewing table 13. The front end portion of the arm 14 is bent toward the front end side of the column sewing table 13 as shown in Fig. 5, and the head portion 15 is connected to the front end of the arm 14. The head 15 is disposed on the column sewing table 13 Above the needle plate 16 above the front end.

A needle bar and a pressing lever (not shown) are protruded from the lower surface of the head 15, and a plurality of needles are fixed to the needle bar, and the pressing member 17 is fixed to the pressing lever. The pusher 17 is provided with an upper and lower knife (not shown), a spreader, and the like. Further, a feeding dog and a looper (not shown) are provided in the column sewing table 13.

As shown in FIG. 5, the main shaft 10 is disposed in the arm 14 along the extending direction of the arm 14. One end of the main shaft 10 near the head 15 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) to transmit power of a sewing machine drive source (not shown) to the spindle 10. At the same time, when the sewing machine is stopped, the spindle 10 can be rotated by manual operation of the operator.

A needle bar drive mechanism, a cutter drive mechanism, and an equalization drive mechanism (not shown) are coupled to the head portion 15 side of the main shaft 10, and the needle, the cutter, the equalization splitter, and the like are driven by the rotation of the spindle 10. 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 wire hook drive mechanism (not shown) disposed in the machine tool 12. Moreover, the feed tooth or the wire hook is driven by the rotation of the spindle 10.

In the conventional delivery arm type sewing machine configured as described above, the cloth loaded on the upper surface of the column sewing table 13 is fed toward the front end side of the column sewing table 13 (that is, the cloth feeding direction F). The various members such as the above-mentioned needles and thread hooks cooperate 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, and partially overlapping them. The overlapping portion forms a double chain stitch or an interlock stitch.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. Sho 30-5835 (Fig. 1-2)

When sewing is performed using the above-described conventional delivery arm type sewing machine, the operator who performs the sewing is positioned on the front side of the sewing machine (that is, the front side of the cloth feed direction F of the machine tool 12 (the right side of the machine tool shown in Fig. 4)) In the cloth feeding direction F, the left and right hands respectively hold the pair of right and left cloth ends, and the cloth ends are inserted into the upper surface of the column sewing table 13 from the left and right sides of the machine tool 12, respectively, to the needle plate 16 not shown. The needle is punctured into the fabric. At the time of sewing, the operator must always look at the vicinity of the puncturing area of the bur in order to perform normal sewing, so that when using the conventional sewing machine, it is visually recognized from the base of the arm 14 of the machine tool 12. The bur is near the area under the thorn.

However, in the conventional delivery arm type sewing machine, the needle puncturing zone is located above the needle plate 16 at the front end of the column sewing table 13, at a position away from the operator, and the operator must pass over the base of the arm 14 Visually identify the punctured area of the bur. Therefore, in order to look at the puncturing area of the bur, the operator often passes over the base of the arm 14 against the puncturing area of the bur, so that the operator's body, especially the chest, will hit the arm 14 The front of the base. Moreover, with the heat or vibration generated by the sewing machine drive It is transmitted to the operator's body and has an adverse effect on the operator's body.

Further, the above-described plurality of eccentric rods are disposed from the base of the arm 14 to the machine tool 12, and the length is extremely long, resulting in an increase in the weight of the body. Therefore, a large load is applied to the plurality of eccentric rods when the sewing machine is driven. This is one of the reasons that hinder the speed of the sewing machine drive.

The present invention has been made in order to solve the above problems, and an object thereof is to provide an operator capable of maintaining the operability of an operator, and to improve the visibility of the punctured area of the bur, and the sewing machine body is less likely to hit the operator's body. Arm sewing machine.

In order to achieve the above object, the delivery arm type sewing machine according to claim 1 is provided with: a column-shaped sewing table, the base end is connected to the machine tool and extends toward the cloth feeding direction; the arm is connected to the machine tool and toward the columnar car The machine head is connected to the front end of the arm and is disposed above the front end of the column sewing machine. The machine tool is a first machine tool, a first connecting unit, and a second machine. The machine tool and the second connecting portion are configured to include a first machine tool that is connected to the columnar sewing table, and a first connecting portion that is connected to the upper right side surface of the first machine tool and extends upward; the second machine tool The base portion is connected to the upper end of the first connecting portion and extends to the right side. The second connecting portion is connected to the rear surface of the second machine tool and is coupled to the base of the arm.

The invention of claim 2 is the delivery arm type sewing machine of claim 1, wherein the upper surface of the first machine tool is inclined downward toward the rear.

The invention of claim 3 is the delivery arm sewing machine of claim 1, The first connecting portion is inclined rearward as it extends upward.

The invention of claim 4 is the delivery arm type sewing machine of claim 1, wherein a part of the upper side of the front surface of the first machine tool is inclined rearward.

The invention of claim 5 is the delivery arm sewing machine according to any one of claims 1 to 4, further comprising: a main shaft disposed in the arm along an extending direction of the arm and supported to be rotatable about the axis The intermediate shaft is disposed in the second machine tool along the extending direction of the second machine tool and is supported to be rotatable about the axis; the lower shaft is orthogonal to the cloth feeding direction from the first machine tool The portion is disposed in the first connecting portion and is supported to be rotatable about the axis; the first belt is wound around the right side of the lower shaft and the left side of the intermediate shaft; and the second belt is wound around the main shaft and the middle portion The right side of each axis.

The invention of claim 6 is the delivery arm type sewing machine of claim 5, wherein a drive source of the sewing machine is connected to a right end of the spindle, and a manual wheel is attached to a right end of the intermediate shaft.

According to the invention of claim 1, since the arm is not based on the machine tool, the operator can improve the visibility of the burr area of the bur, and the operator's body does not easily hit the arm and the machine tool. Further, since the concave portion on the right side of the first machine tool is sufficiently secured, the operator's right hand is not prevented from being inserted into the columnar sewing table, and the workability of the operator to operate the cloth is not impaired. Further, the concave space and the surface of the second machine tool or the arm can be secured in a wide space, and the various mechanisms required for sewing can be arranged.

According to the invention of claim 2, the operator's visual recognition of the puncturing area of the bur is further enhanced.

According to the invention of claim 3, the first connecting portion reduces the feeling of pressure on the operator, and the operator easily leans the face against the burr area.

According to the invention of claim 4, even if the operator approaches the burr area of the bur in order to look at the puncturing area of the bur, the operator's body is less likely to hit the machine tool.

According to the invention of claim 5, each of the drive mechanisms such as the feed tooth and the wire hook disposed in the first machine tool is connected to the lower shaft of the first machine tool, and is driven in the same manner as in the conventional example. The connecting member such as the driving mechanism and the eccentric rod of the lower shaft has a short length and is light in weight, so that the load of the connecting member can be reduced.

According to the invention of claim 6, the manual train is disposed at a position that is safe and easy for the operator to operate.

1‧‧‧Sewing machine body

2‧‧‧1st machine tool

2a‧‧‧ Machine tool above

2b‧‧‧ front of the machine

3‧‧‧ Column-shaped sewing table

4‧‧‧ arm

5‧‧‧ head

6‧‧‧1st link

7‧‧‧2nd machine tool

8‧‧‧2nd link

9‧‧‧ needle board

9a‧‧‧needle puncturing area

18‧‧‧ spindle

19‧‧‧Intermediate axis

20‧‧‧ Lower shaft

21‧‧‧1st belt

22‧‧‧2nd belt

23‧‧‧Motor

2‧‧‧Manual wheel

25, 26‧‧‧ Pulley

27, 28‧‧‧ Pulley

29‧‧‧Manual pulley

F‧‧‧Fabric feed direction

Fig. 1 is a schematic perspective view of a 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 view showing the main body of the sewing machine when the sewing machine is viewed from a slightly upper side.

Fig. 4 is a left side view of the sewing machine body of the conventional delivery arm type sewing machine.

Fig. 5 is a plan view showing the sewing machine body of the sewing machine.

Fig. 6 is a front elevational view of the sewing machine body of the sewing machine.

[Best Mode for Carrying Out the Invention]

Hereinafter, the sewing machine body 1 according to the embodiment of the present invention will be described with reference to the drawings. Further, the position at which the outer casing of the sewing machine body 1 is formed is indicated by a two-dot chain line. The base end of the column sewing table 3 is connected to the lower rear portion of the first machine tool 2, and the column sewing table 3 extends horizontally in the cloth feeding direction F. A needle plate 9 is provided on the front end portion of the column-shaped sewing table 3, and the needle plate 9 is provided with a burr-punching area 9a. As shown in FIG. 1 and FIG. 2, the first machine tool 2 has a pentagon shape from the left side, and the upper side of the front surface 2b of the machine tool is inclined toward the feed direction F (that is, the rear side) as it goes upward. Further, the upper surface 2a of the first machine tool 2 is inclined downward (that is, rearward and downward) in the feeding direction F.

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

One end of the second connecting portion 8 is connected to the rear right side of the second machine tool 7, 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 column sewing table side), and the left end is connected to the head 5. The position of the head 5 is positioned above the needle plate 9 provided on the column sewing table 3. Each of the head 5 or the column sewing table 3 is provided with a mechanism for forming a stitch, and a plurality of needles or pressing members (not shown) are disposed below the head portion 5. However, these elements are conventional. Known components, the description of which is omitted. In addition, the front of the arm 4 and the second machine tool 7 A suture pulling member such as a scale or a cam for controlling the extraction of the suture and the decorative thread, and a suture guiding member for guiding the movement of the sutures are provided on the rear side.

As shown in FIG. 1 or FIG. 3, the extending direction of the arm 4 is orthogonal to the cloth feeding direction F. That is, the arm 4 and the second machine tool 7 are arranged in parallel. Further, the arm 4, the second connecting portion 8, and the second machine tool 7 are connected to each other in a "ㄇ" shape.

A main shaft 18 is disposed in the arm 4 along the extending direction of the arm 4. The main shaft 18 is supported by the arm 4 so as to be rotatable about the axis, and the right end protrudes from the right side of the arm 4 to the right, and the left end protrudes into the head 5. A motor 23 as a drive source of the sewing machine main body 1 is attached to the right side surface of the arm 4, and the right end of the main shaft 18 is coupled to a motor shaft (not shown) of the motor 23.

The intermediate shaft 19 is disposed in the second machine tool 7 along the extending direction of the second machine tool 7. The intermediate shaft 19 is supported by the second machine tool 7 so as to be rotatable about the axis, and the right end projects from the right side of the second machine tool 7 to the right, and the right end of the protrusion is provided with a hand wheel 24.

The lower shaft 20 is disposed in the left-right direction from the upper portion of the first machine tool 2 to the lower portion of the first connecting portion 6. The lower shaft 20 is formed to be rotatable about an axis, and the right end thereof is supported by the first joint portion 6, and the left end is supported by the first machine tool 2. As shown in FIGS. 1 to 3, the main shaft 18, the intermediate shaft 19, and the lower shaft 20 are disposed in parallel with each other and orthogonal to the cloth feeding direction F. Moreover, the main shaft 18 and the intermediate shaft 19 are positioned at the same height, and the lower shaft 20 is disposed at a position lower than the main shaft 18 and the intermediate shaft 19.

A pulley 25 is fixed to the right end side of the arm 4 of the main shaft 18, A pulley 26 is fixed to the right end side of the second machine tool 7 of the intermediate shaft 19. The second belt 22 is wound around the main shaft 18 and the intermediate shaft 19 by the second connecting portion 8 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 joint 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 by the pulley 27 and the pulley 28.

In the arm 4 or in the head 5, the main shaft 18 is coupled to each of a drive mechanism such as a needle bar, a cutter, and a balanced splitter (not shown). Further, in the first machine tool 2, the lower shaft 20 is connected to each of the drive mechanisms such as the feed teeth and the wire hooks, not shown, by a plurality of eccentric rods (not shown). When the main shaft 18 is rotated by the driving of the motor 23, the rotation of the main 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 rotates in synchronization with the main shaft 18.

In the delivery arm type sewing machine having 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 machine tool 2, and the operator's eyes are positioned substantially above the arm 4. The same height or above the arm 4. At this time, as shown in FIG. 3, since the arm is not positioned above the first machine tool 2 as in the conventional delivery arm type sewing machine, the operator can pass the first machine tool 2 whose positioning position is lower than that of the arm 4. On the upper surface of the machine tool 2a, it is easy to visually recognize 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 contact the first machine tool 2 of the sewing machine body 1, and the heat or vibration transmission of the sewing machine body 1 occurs. There is no right to the operator's body The operator has an adverse effect.

Further, as shown in FIG. 3, the right side of the first machine tool 2 does not have a portion that is connected to the arm 4 except for the upper portion, and there is no connection portion on the lower right side of the first connecting portion 6. That is, in this configuration, the concave space on the right side of the first machine tool 2 is very wide, and when the operator inserts the right hand into the cylindrical sewing table 3 of the sewing machine body 1 to feed the cloth to the burr-punching area 9a, right The sewing machine body 1 is not caught under the elbows of the arms, and the arms are not easily caught by the sewing machine body 1, so that the workability of the operator is not impaired.

Further, as long as the structure in which the upper surface 2a of the first machine tool 2 is inclined rearward and downward as in the embodiment is employed, the field of view on the front side of the burr-punching area 9a is widened from the operator's view, and the burr-punched area is nearby. The visual recognition can be improved. At the same time, as long as the upper portion of the front surface 2b of the first machine tool or the first connecting portion 6 is inclined upward as it extends upward, the feeling of pressure on the operator can be reduced, even if the operator leans the face against the burr In the lower section 9a, the operator's body does not easily hit the sewing machine body 1.

Further, as described above, since the arm 4 and the second machine tool 7 are arranged in parallel, the right side of the both sides is connected to the U-shaped structure by the second connecting portion 8, so that the arm 4 or the second machine tool 7 can be sufficiently secured. In the front side of the arm 4 or the rear side of the second machine tool 7, the space for arranging the connecting members of the respective mechanisms, for example, a suture drawing member (not shown), is sufficiently secured.

As described above, the sewing machine body 1 of the present embodiment can maintain the sewing workability of the operator, and can improve the operator's purpose of the burr area of the bur. It is visually recognizable and can greatly ensure the space inside and outside the arm. In the sewing machine main body 1 of the above-described arrangement, the first machine tool 2 is disposed by the arrangement and connection of the main shaft 18, the intermediate shaft 19, the lower shaft 20, the first belt 21, and the second belt 22 as described above. Each drive mechanism is coupled to the lower shaft 20 and driven in synchronization with the rotation of the lower shaft 20. The lower shaft 20 is disposed at a position lower than the main shaft 18 disposed on the arm 4, and is connected to each mechanism disposed in the first machine tool 2 as compared with the conventional example (that is, the model coupled to the main shaft). The plurality of eccentric rods of the lower shaft 20 are of course shorter in size and lighter in weight, whereby the load applied to the eccentric rod can be reduced when the sewing machine is driven, and the sewing machine can be speeded up.

Further, in the above-described conventional example shown in FIGS. 4 to 6, the manual wheel (manual pulley 29) is disposed at the end of the main shaft 10 on the head portion 15 side of the arm 14, that is, the manual wheel (manual pulley 29) is Disposed on the opposite side of the operator's arm 14 is not a position that is easy for the operator to operate. On the other hand, since the manual wheel 24 of the present embodiment 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 machine tool 7, and is easy to operate and safe for the operator.

Further, the present invention is not limited to the above-described embodiments. For example, the parts of the sewing machine main body 1 are arranged in a bilaterally symmetrical feeding arm type sewing machine, and the object of the present invention can be achieved, and the same as the above-described embodiment can be achieved. efficacy.

1‧‧‧Sewing machine body

2‧‧‧1st machine tool

2a‧‧‧ Machine tool above

2b‧‧‧ front of the machine

3‧‧‧ Column-shaped sewing table

4‧‧‧ arm

5‧‧‧ head

6‧‧‧1st link

7‧‧‧2nd machine tool

8‧‧‧2nd link

9‧‧‧ needle board

9a‧‧‧needle puncturing area

18‧‧‧ spindle

19‧‧‧Intermediate axis

20‧‧‧ Lower shaft

21‧‧‧1st belt

22‧‧‧2nd belt

23‧‧‧Motor

24‧‧‧Manual wheel

25, 26‧‧‧ Pulley

27, 28‧‧‧ Pulley

F‧‧‧Fabric feed direction

Claims (6)

A delivery arm type sewing machine, comprising: a column-shaped sewing table, the base end is connected to the machine tool and extends toward the cloth feeding direction; the arm is connected to the machine tool and extends horizontally in a direction crossing the column-shaped sewing table; The machine tool is connected to the front end of the arm and is disposed above the front end of the column sewing machine. The machine tool is composed of a first machine tool, a first connecting unit, a second machine tool, and a second connecting unit. The first machine tool is connected to the columnar sewing table; the first connecting portion is connected to the upper right side surface of the first machine tool and extends upward; and the second machine tool is connected to the upper portion of the first connecting portion. The front end extends to the right side at the same time; and the second connecting portion is connected to the rear surface of the second machine tool and is coupled to the base of the arm. The delivery arm type sewing machine of claim 1, wherein the upper surface of the first machine tool is inclined downward toward the rear. The delivery arm type sewing machine according to claim 1, wherein the first connecting portion is inclined rearward as it extends upward. A delivery arm sewing machine according to claim 1, wherein a part of the upper side of the front surface of the first machine tool is inclined rearward. The delivery arm sewing machine according to any one of claims 1 to 4, further comprising: a main shaft disposed in the arm along the extending direction of the arm and supported to be rotatable about the axis; the intermediate shaft along The extending direction of the second machine tool is disposed in the second machine tool and is supported to be rotatable about the axis; the lower shaft is disposed from the upper portion of the first machine tool to the first portion so as to be orthogonal to the cloth feeding direction. In the joint, it is supported as a pivotable shaft. Rotating; the first belt is wound around the right side of the lower shaft and the left side of the intermediate shaft; and the second belt is wound around the right side of each of the main shaft and the intermediate shaft. A delivery arm sewing machine according to claim 5, wherein a drive source of the sewing machine is connected to a right end of the spindle, and a manual wheel is attached to a right end of the intermediate shaft.