JP6735017B2 - Auxiliary device for sewing machine and sewing machine using the same - Google Patents

Description

The present invention relates to a sewing machine auxiliary device and a sewing machine using the auxiliary device.

BACKGROUND ART Conventionally, as a guide device provided in a sewing machine device, for example, one disclosed in Patent Document 1 is known.

Patent Document 1 discloses a workpiece guide device for a sewing machine for automatically controlling and aligning an edge portion of a cloth. Specifically, this guide device rotates around a rotary shaft extending in a direction orthogonal to the cloth feeding direction in the sewing machine, and feeds the edge of the cloth to the sewing machine side, and a cylindrical guide wheel. The portion projects from the outer peripheral surface of the guide wheel so as to be rotatable in the direction along the rotation axis, and the rotation of the outer periphery in the direction along the rotation axis causes the rotation axis from the edge of the fabric to the seam to be rotated. And a wheel that corrects the positional deviation in the direction along the same.

JP, 06-182074, A

In the guide device of Patent Document 1 described above, the guide wheel is configured to rotate about a rotation axis extending in a direction orthogonal to the feeding direction of the cloth, so that, for example, if the cloth has a linear edge, By causing the linear shape of the edge of the cloth to follow the feed direction by the guide device, the cloth can be guided accurately and easily to the sewing machine.

However, for example, it is general that the edge portions (cuff portions) of the body and the edge portions of the sleeves that form the shirt have different curved shapes, and such edge portions having different curved shapes. In the case of guiding two cloths having the above to the sewing machine apparatus side by the guide device of Patent Document 1, the sewing manufacturer holds both cloths with both hands and moves both cloths in the direction orthogonal to the feeding direction, thereby edge portions. And the distance to the seam must be adjusted. In order to perform such adjustment work, a skill of sewing work having a high degree of skill is required. For this reason, when an inexperienced worker performs a sewing operation, a problem such as wrinkles may occur in the stitched portion. That is, in the case of sewing two pieces of fabric having mutually different curved edge portions, the sewing machine of Patent Document 1 requires excellent skill like a skilled worker, and an inexperienced worker is qualitative. It was difficult to obtain a certain stitch finish.

The present invention has been made in view of such a point, and an object thereof is to provide a new device so as to sew a cloth having a curved edge portion, even for an inexperienced operator. The aim is to obtain a stitch of a predetermined quality.

In order to achieve the above object, the present invention newly provides an auxiliary device for smoothly feeding one material having a curved edge portion to the sewing machine device and the automatic correction device.

Specifically, the first aspect of the present invention relates to a sewing machine auxiliary device, and this sewing machine auxiliary device feeds the edge portions of two upper and lower cloths having curved edge portions different from each other. The automatic correction device is arranged on the front side of the sewing machine for sewing while feeding in the direction, and for automatically correcting the positional deviation from the edge of each cloth in the left-right direction orthogonal to the cloth feeding direction in the sewing machine to the stitches. It is what is done. The auxiliary device for a sewing machine is provided on the front side of the automatic correction device and includes an auxiliary device that assists the feeding operation of one fabric by the sewing device. The auxiliary device is provided so as to be movable toward the guide portion and the guide portion arranged so as to extend toward the automatic correction device, and holds the end-of-sew side of one end of the fabric in a pulled state. And a clamp portion that deforms the edge portion into a substantially linear shape by applying a resistance force to the feeding operation of the sewing machine. Further, the guide portion extends linearly in the feed direction, and the rail portion on which the clamp portion is reciprocally supported is supported. And a support portion rotatably supporting the end portion.

In the first embodiment, the auxiliary device holds the end edge side of one of the fabrics in a tensioned state to apply a resistance force to the feeding operation of the sewing machine, thereby making the end edge substantially linear. It becomes possible to transform into. That is, in the case of sewing two upper and lower fabrics having curved edge portions different from each other, one of the fabrics is deformed from a curved shape to a substantially linear shape by an auxiliary device, and the automatic auxiliary device On the other hand, while it is possible to feed the fabric as it is in the feeding direction, only the other fabric may be adjusted in the left-right direction orthogonal to the feeding direction while adjusting the distance between the edge and the stitch. In other words, with reference to the edge of one dough that has been transformed from a curved shape to a substantially linear shape by the auxiliary device, the edge of one dough is made to follow the curved shape of the other dough, It is possible to sew the edges together. In this way, by providing the auxiliary device for assisting the feeding operation of one fabric, the risk of problems such as wrinkles in the stitched portion is reduced and the burden on the operator is reduced, so that an inexperienced operator Even in this case, it is possible to obtain a stitch with a predetermined quality. Further, in the first embodiment, the pulling state of the cloth with respect to the sewing machine device of the clamp portion can be appropriately adjusted by adjusting the vertical position of the front end portion of the rail portion.

According to a second aspect, in the first aspect, the clamp portion has upper and lower rollers that roll while holding the rail portion from both upper and lower sides and can reciprocate along the longitudinal direction of the rail portion. The rail portion is inclined by the support portion so that the height of the rear end portion of the rail is higher than that of the front end portion, and the clamp portion has the roller rolling on the rail portion. And is configured to passively move on the rail part by resistance due to the own weight of the clamp part when moving in an inclined climbing direction from the front end to the back end. And

In the second embodiment, the inclined rail portion is moved by the resistance of the clamp portion due to its own weight when the clamp portion moves in the inclined climbing direction from the front end portion to the rear end portion due to the rolling of the upper and lower rollers. Since it passively moves on the part, it is possible to hold and pull the end-of-sew side of the edge of one fabric according to the feeding operation of the sewing machine with a simple structure without using any special electric parts. ..

A third form is the switch part according to the first or second form, wherein when the support part comes into contact with the clamp part, the holding state of the one end edge of the material by the clamp part on the sewing end side is released. Is provided.

In the third mode, when the rail part is moved and comes into contact with the switch part while the clamp part holds the end-of-sewn side of the end edge of the material, the one end-of-sewn side of the material by the clamp part The holding state is released. In this way, with the switch part, the holding state of one fabric by the clamp part can be released with a simple structure, and the sewing end side of the fabric edge can be smoothly fed to the sewing machine device, and after that, the clamp The part can be returned to the front side along the inclination of the rail part by its own weight or the like.

A sewing machine auxiliary device according to a fourth aspect is arranged on the front side of a sewing machine device that stitches while feeding two upper and lower fabric edges having different curved edge portions in the feed direction. The sewing machine is provided in an automatic correction device that automatically corrects the positional deviation from the edge of each fabric to the stitch in the left-right direction orthogonal to the fabric feeding direction. The auxiliary device for a sewing machine is provided on the front side of the automatic correction device and includes an auxiliary device that assists the feeding operation of one fabric by the sewing device. The auxiliary device is provided so as to be movable toward the guide portion and the guide portion arranged so as to extend toward the automatic correction device, and holds the end-of-sew side of one end of the fabric in a pulled state. By applying a resistance force to the feeding operation of the sewing machine , the clamp part that deforms the edge portion into a substantially linear shape, a feed speed sensor that detects the feeding speed of the cloth in the sewing machine device , and the clamp part along the guide part. And a control unit that controls the drive unit so that the clamp unit automatically moves on the guide unit in synchronization with the feed speed detected by the feed speed sensor. To do.

In the fourth aspect, the auxiliary device reduces the risk of defects such as wrinkles in the stitched portions and reduces the burden on the operator, so that even an inexperienced operator can finish sewing with a predetermined quality. Can be obtained. Further, the clamp part can be actively moved on the rail part, and the speed of the clamp part can be controlled so as to always be a speed suitable for the feed speed.

A fifth aspect relates to a sewing machine, and the sewing machine is characterized by including the auxiliary device for a sewing machine according to any one of the first to fourth aspects.

In the fifth mode, the same operational effect as that of the first mode can be obtained.

According to the present invention, when two upper and lower fabrics having different curved edge portions are sewn together, the sewing end side of one of the fabric edge edges is held in a tensioned state and the sewing machine feeds. By providing an auxiliary device that assists the feeding operation so as to add resistance to the operation, the risk of problems such as wrinkles occurring at the stitched portion is reduced and the burden on the operator is reduced, so an inexperienced operator Even in this case, it is possible to obtain a stitch with a predetermined quality.

FIG. 1 is a perspective view showing a sewing machine according to an embodiment of the present invention as viewed from above. FIG. 2 is a perspective view showing the sewing machine as viewed from the side. FIG. 3 is a partially enlarged perspective view of the sewing machine device and the automatic correction device shown in FIG. FIG. 4 is a front view of the auxiliary device. FIG. 5 is a partially enlarged side view showing the back side support portion and the clamp portion. FIG. 6 is a partially enlarged perspective view showing the front side support portion as viewed from above. FIG. 7 is a perspective view showing the clamp portion as viewed from below. FIG. 8 is a side view of the clamp part. FIG. 9 is a schematic diagram showing the shape of the body and sleeves of the shirt before sewing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the embodiments is merely exemplary in nature, and is not intended to limit the present invention, its application, or its use.

1 and 2 show a sewing machine S according to an embodiment of the present invention. The sewing machine S includes a sewing machine device 1, an automatic correction device 20, and an auxiliary device 30 as main elements. Hereinafter, each device will be described in detail. In addition, in the present embodiment, the sewing machine 1, the automatic correction device 20, and the auxiliary device 30 are all installed on the work table T.

In the following description, “upper (upper)” and “lower (lower)” represent a vertical positional relationship of the sewing machine S. Further, when the sewing machine using the sewing machine S is viewed from the sewing machine 1 as a reference, the "front side" means a side closer to the sewing machine than the sewing machine 1, while "back side". Represents the positional relationship on the side farther from the sewing machine than the sewing machine 1. Further, the “left-right direction” represents a direction orthogonal to a cloth feeding direction A described later in a plan view.

(Sewing machine)
The sewing machine device 1 is an overlock sewing machine that is mainly used for overedging, and specifically, the edges of two upper and lower cloths W1 and W2 (see FIG. 9) having curved edge portions different from each other. It is configured such that the parts can be sewn together while being fed in the feed direction A as seen from a sewing manufacturer in a state where both end portions are overlapped. In FIG. 9, the upper cloth W1 shows the sleeve of the shirt, and the lower cloth W2 shows the body of the shirt.

As shown in FIGS. 1 to 3, the sewing machine device 1 includes a main body portion 2, and a substantially rectangular box-shaped cylinder bed portion 3 is attached to the main body portion 2 approximately at the center in the vertical direction.

On the upper part of the cylinder bed portion 3, a needle plate 4 for horizontally placing the cloth fed in the feeding direction A from the front side is horizontally arranged. The needle plate 4 is provided with a needle drop hole (not shown) for dropping a sewing machine needle 7 described later into the cylinder bed portion 3 and a feed groove (not shown) extending in the feed direction A. There is. Further, inside the feed groove, there are feed teeth (not shown) for feeding the material placed on the upper surface of the needle plate 4 while performing an elliptical motion in synchronization with the vertical reciprocating motion of the needle bar 6 in the feed groove. It is provided.

A sewing machine head portion 5 is attached above the cylinder bed portion 3. A needle bar 6 extending downward toward the needle plate 4 and a sewing needle 7 fixed to the lower end of the needle bar 6 are provided below the sewing machine head 5. The sewing machine head 5 has a built-in drive mechanism (not shown) for moving the needle bar 6 up and down. An arm portion 8 is attached below the sewing machine head portion 5, and a holding portion 11 is provided on the arm portion 8.

By using the sewing machine device 1 as described above, the cloth is placed on the upper surface of the needle plate 4, and the main body 2 is driven while being pressed by the presser plate 11, so that the edge of the cloth is sewn with the sewing machine needle 7. You can The sewing machine device 1 according to the present embodiment uses a known mechanism. The detailed description of the configurations other than those described above will be omitted.

(Automatic correction device)
As shown in FIGS. 1 to 3, the automatic correction device 20 is arranged on the front side of the sewing machine device 1, and the edge portion of each fabric in the left-right direction orthogonal to the fabric feeding direction A in the sewing machine device 1. This is to automatically correct the positional deviation from the to the seam.

Specifically, as shown in FIG. 3, the automatic correction device 20 has a bracket 21A, and this bracket 21A is provided with two toothed pulleys 22, 22 that are arranged side by side in the left-right direction. A feed belt 24, which is a toothed belt, is wound between the pulleys 22 and 22 in a state where the tooth portion of the inner peripheral surface is meshed with the toothed pulley. Further, a motor 23 for driving one pulley 22 is attached to the bracket 21A, and the pulleys 22 and 22 are normally or reversely rotated by the operation of the motor 23, and the feed belt 24 is moved in the left-right direction. The outer peripheral surface of the feed belt 24 has a coefficient of friction that allows the material to be fed.

Further, a bracket 2a is attached and fixed to the upper surface of the main body 2, and the bracket 2a has a protruding portion 2b protruding toward the front side up to a position directly above the feed belt 24, and the protruding portion 2b has a vertical direction. A pressing cylinder 28 formed of an extending air cylinder is attached and fixed. The piston rod 28a of the pressing cylinder 28 penetrates the protruding portion 2b of the bracket 2a and extends to the lower side thereof, and the elevating portion 27 is attached to the tip (lower end) thereof so as to move integrally. This elevating part 27 is of a columnar shape, and a hemispherical pressing part 27a is formed at the lower end thereof, and when the elevating part 27 is moved downward together with the piston rod 28a by the extension operation of the pressing cylinder 28, the The dough on the feed belt 24 is sandwiched by the hemispherical pressing portion 27a, and in that state, the dough is moved in the left-right direction by the movement of the feed belt 24.

Then, the pressing cylinder 28 sends a detection signal from a detection unit (not shown) that automatically detects the positional deviation in the left-to-right direction from the edge of the cloth sent to the needle plate 4 to the stitches. The external air supply device (not shown) that has received the air supply is operated.

That is, when the pressing cylinder 28 expands in response to the detection signal from the detection unit, the elevating unit 27 at the lower end of the piston rod 28a descends, and the pressing unit 27a at the lower end strongly contacts the cloth arranged on the feed belt 24. Then, by driving the motor 23 by the detection signal of the detection unit, the cloth moves between the holding unit 27a and the feed belt 24 in one of the left and right directions according to the movement of the feed belt 24. As a result, the positional deviation from the edge of each fabric in the left-right direction to the seam is automatically corrected. When this automatic correction is completed, the expanding operation of the pressing cylinder 28 is stopped and the expanding operation is contracted, so that the elevating part 27 moves up and returns to the original state.

(Auxiliary device)
As shown in FIGS. 1 and 2, the auxiliary device 30 is arranged on the front side of the automatic correction device 20, and is configured to assist the feeding operation of one of the fabrics by the sewing machine device 1. The auxiliary device 30 includes a guide portion 31 arranged so as to extend toward the automatic correction device 20, and a clamp portion 50 movably provided on the guide portion 31. Hereinafter, each configuration will be described in detail.

As shown in FIGS. 1 and 4, the guide portion 31 has a rail portion 32 on which the clamp portion 50 is supported so as to be capable of reciprocating. The rail portion 32 is formed in an elongated substantially plate shape that linearly extends in the feeding direction A, and both side surfaces facing each other in the thickness direction are located on the left and right sides, and the width direction extends along the vertical vertical plane. It is located in. Further, the guide portion 31 has a back side support portion 33 and a front side support portion 40 as support portions that support the rail portion 32 at both ends in the length direction.

The back side support portion 33 is provided on the back side of the rail portion 32, and supports the back side end portion 32a of the rail portion 32 so as to be vertically rotatable within a vertical plane. Specifically, as shown in FIG. 5, a support leg 34 extending upward is attached and fixed to a workbench T located in the vicinity of the front side of the automatic auxiliary device 30. The rear end 32a of the rail portion 32 is supported by a horizontal rear rotation shaft 35 so as to be vertically rotatable.

As shown in FIGS. 1 and 4, the front-side support portion 40 is provided on the front side of the rail portion 32, supports the front-side end portion 32b of the rail portion 32 so as to be vertically movable, and The height position can be changed. Specifically, as shown in FIG. 6, a pedestal portion 41 is provided on the workbench T at a position far away from the automatic auxiliary device 30, and the pedestal 41 is formed on the workbench T. The work table T is mounted and fixed so as to straddle the through hole H. On the left side of the pedestal portion 41, a plate-shaped lifting slide portion 43 extending in the up-down direction is provided between the pedestal portion 41 and a substantially L-shaped fixing bracket 42 fixed by two screws V, V. It is attached in a state of being supported so that it can slide in the direction (movable up and down). The elevating slide portion 43 is inserted into the through hole H of the workbench T, and the upper end portion thereof is supported by the front end portion 32b of the rail portion 32 so as to be vertically rotatable by a horizontal front rotation shaft 44. Has been done.

Further, an adjustment cylinder 45, which is an air cylinder extending vertically in a standing manner, is fixed to the pedestal portion 41 with a piston rod (not shown) penetrating the pedestal portion 41. Extends through the through hole H of the workbench T to the lower side thereof, and its tip (lower end) is movably connected to the lower end of the elevating slide part 43, and the rotating shaft 44 of the adjusting cylinder 45. By moving the elevating slide portion 43 up and down by connecting the rear end portion 32a to the rear support portion 33, the vertical position of the front end portion 32b of the rail portion 32 can be adjusted. ing. Then, by adjusting the vertical position of the elevating slide portion 43 by the adjustment cylinder 45, the rail portion 32 is inclined so that the rear end portion 32a is higher than the front end portion 32b, as shown in FIG. ing.

Next, as shown in FIGS. 5, 7, and 8, the clamp portion 50 has a substantially T-shaped base portion 51. A plate-shaped roller support portion 53 is arranged in parallel with the base portion 51 at a space on the upper right side of the base portion 51. The roller support portion 53 is provided on the upper right surface of the base portion 51 and has two cylindrical connecting portions 52, 52. Thus, they are integrally attached so as to face the right surface of the base portion 51 with a space therebetween. On the lower left surface of the roller support portion 53 (the surface facing the base portion 51), for example, two upper rollers 54, 54 that are horizontally arranged at intervals in the width direction are rotatable about a horizontal axis. It is supported. A lower roller 55 located directly below the upper rollers 54 is supported on the lower part of the right surface of the base 51 so as to be rotatable about the horizontal axis of the horizontal direction. As shown in FIGS. 1 and 4, when the clamp part 50 is installed on the rail part 32, the upper rollers 54, 54 and the lower roller 55 roll while holding the rail part 32 from both upper and lower sides. The clamp portion 50 is capable of reciprocating along the longitudinal direction of the rail portion 32.

On the other hand, a clamp cylinder 56, which is an air cylinder having a piston rod 56a protruding upward, is fixed to the left surface of the base portion 51. The clamp cylinder 56 is provided with air supply ports 57, 57 into which air tubes 58, 58 of an external air supply device (not shown) are inserted, and external air supply is performed via the air supply ports 57, 57. Pressurized air is supplied from the device into the clamp cylinder 56, and the clamp cylinder 56 expands and contracts to change the protruding length of the piston rod 56a. A circular holding portion 59 is integrally fixed to the upper part of the piston rod 56a of the clamp cylinder 56, and a cylindrical convex portion 60 is provided on the upper surface of the holding portion 59 so as to project upward.

Further, at the upper end of the base portion 51, the holding portion 59 and a top plate portion 61 extending leftward so as to face the holding portion 59 and above the holding portion 59 are attached and fixed by screwing. A circular hole portion 62 for inserting the portion 60 in a loosely fitted state is formed so as to penetrate therethrough.

Then, as shown in FIG. 8, when pressurized air is supplied to the clamp cylinder 56 from the external air supply device, the clamp cylinder 56 expands and the piston rod 56a moves upward together with the holding portion 59, The convex portion 60 of the holding portion 59 comes to be fitted into the hole portion 62 of the top plate portion 61 (see the phantom line in FIG. 8). Then, as long as air is continuously supplied from the external air supply device into the clamp cylinder 56, this fitted state is maintained. By such an operation of the holding portion 59, it becomes possible to hold the end of sewing at the end edge portion of one fabric.

As shown in FIG. 4, since the rail portion 32 is inclined so that the rear end portion 32a is higher than the front end portion 32b, the clamp portion 50 is self-weighted unless another external force acts. The rail portion 32 moves toward the front side along the inclination of the rail portion 32. However, when the material is set in the sewing machine 1 and the material is fed in the feeding direction A while the clamp portion 50 holds the one end of the material at the sewing end side, the clamp portion 50 causes the material to be fed. The rail portion 32 is pulled by and moves upward from the front end portion 32b toward the rear end portion 32a. That is, the clamp part 50 passively moves on the rail part 32 by the resistance due to the own weight of the clamp part 50 when the rail part 32 moves in the inclined climbing direction from the front end part 32b to the rear end part 32a. To move. Then, for example, when the lower fabric W2 (body) shown in FIG. 9 is set in the auxiliary device 30 and the sewing machine device 1 is operated, the clamp part 50 causes the end of sewing of the end edge portion of the lower fabric W2 to endure by its own weight resistance. The tension is maintained and the edge of the lower cloth W2 is deformed into a substantially linear shape (see FIG. 4).

Here, as shown in FIGS. 4 and 5, the support leg 34 of the back side support portion 33 is provided with a switch portion 36 including a limit switch having a contact portion 36a. The switch section 36 is electrically connected to the external air supply device, for example, and when the clamp section 50 comes into contact with the contact point section 36a and the switch section 36 detects the contact, the switch section 36 is switched. A signal is output, and the piston rod 56a of the clamp cylinder 56 moves downward together with the holding portion 59 based on the switching signal. In this way, when the clamp part 50 comes into contact with the contact part 36a of the switch part 36, the piston rod 56a and the holding part 59 of the clamp cylinder 56 of the clamp part 50 move downward. As a result, the holding state of the one end edge of the material by the clamp portion 50 on the sewing end side is released, and the clamp portion 50 moves to the front side along the inclination of the rail portion 32 by its own weight.

Further, as shown in FIGS. 1 and 4, a stopper portion 37 that can position the clamp portion 50 at a predetermined position is attached to the rail portion 32. The stopper portion 37 is movably fixed to the rail portion 32 at an arbitrary position, and the stopper portion 37 causes the clamp portion 50 to move toward the front side along the inclination of the rail portion 32 due to its own weight. The stopper portion 37 positioned at the position is brought into contact with the stopper portion 37 so as not to move further toward the front side.

(Operation and effect of the embodiment)
As described above, in the sewing machine S according to the present embodiment, the auxiliary device 30 holds the sewing end side of the edge portion of one of the fabrics in a tensioned state to apply a resistance force to the feeding operation of the sewing machine device 1. The edge portion can be deformed into a substantially linear shape. For example, as in the present embodiment, of the upper and lower two cloths W1 and W2 having mutually different curved edge portions, the lower cloth W2 (body) which is deformed from the curved shape to the substantially linear shape by the auxiliary device 30. With regard to the above, it is possible to feed the edge portion as it is to the automatic auxiliary device 30 in the feeding direction A, while for the upper side fabric W1 (sleeve part), in the feeding direction A without using the auxiliary device 30. The distance between the edge and the seam may be adjusted while moving the lower cloth W2 in the right and left directions which are orthogonal to each other. In other words, with the edge of the lower cloth W2 deformed from the curved shape to the substantially linear shape by the auxiliary device 30 as a reference, the curved shape of the upper cloth W1 is set along the edge of the lower cloth W2. It becomes possible to sew the edges of the fabrics W1 and W2 together.

Therefore, by providing the auxiliary device 30 for assisting the feeding operation of one fabric in this manner, when sewing two upper and lower fabrics having different curved edge portions, creases and the like are sewn at the sewn portion. The risk of malfunction is reduced and the burden on the operator is reduced. Therefore, even an inexperienced operator can obtain a stitch with a predetermined quality.

Further, in the guide portion 31 having the rail portion 32 and the support portions 33 and 40, by adjusting the vertical position of the front end portion 32b of the rail portion 32, the pulling state of the cloth of the clamp portion 50 with respect to the sewing machine device 1 is appropriately adjusted. Can be adjusted.

Further, the clamp portion 50 having the upper and lower rollers 54, 55 is a rail portion that is inclined due to the resistance of the clamp portion 50 due to its own weight when moving in the inclined climbing direction from the front end portion 32b to the rear end portion 32a. Since it passively moves on 32, it is possible to hold and pull the end of sewing side of one of the fabric edges according to the feeding operation of the sewing machine 1 with a simple structure without using any special electric parts. it can.

Furthermore, since the back side support portion 33 is provided with the switch portion 36 that releases the holding state of the one end edge of the material by the clamp portion 50 on the sewing end side when the clamp portion 50 is contacted, the switch portion 36 is easily provided. With such a configuration, the holding state of one fabric by the clamp portion 50 can be released on the back side support part 33 side, and the sewing end side of the fabric edge can be smoothly fed to the sewing machine device 1. At the same time, after that, the clamp part 50 can be returned to the front side along the inclination of the rail part 32 by its own weight.

[Other Embodiments]
In the sewing machine S according to the above-described embodiment, the clamp portion 50 is provided with the rail portion 32 due to the resistance of the clamp portion 50 due to its own weight when the rail portion 32 is moved in the upward climbing direction from the front end portion 32b toward the rear end portion 32a. Although the form which moves passively on the part 32 was shown, it is not restricted to this form. For example, the auxiliary device 30 includes a feed speed sensor that detects the feed speed of the cloth in the sewing machine 1, a drive unit that moves the clamp unit 50 along the guide unit 31, and the clamp unit 50 that feeds on the guide unit 31. The control unit may control the drive unit so as to automatically move in synchronization with the feed speed detected by the speed sensor. With such an auxiliary device 30, the clamp portion 50 can be actively moved on the rail portion 32, and the speed of the clamp portion 50 can be controlled so as to always be a speed suitable for the feed speed.

Further, in the correction device 30 for the sewing machine S according to the above-described embodiment, the clamp portion 50 that holds the sewing end side of the edge portion of one fabric by using the clamp cylinder 56 by the air supply from the external air supply device as a power source is shown. However, the present invention is not limited to this form, and the clamp part 50 may be a form using a power source (for example, a motor or an electromagnet) by another means.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention.

INDUSTRIAL APPLICABILITY The present invention can be industrially used as an auxiliary device provided in a sewing machine device used for sewing two upper and lower cloth materials having mutually different curved edge portions and a sewing machine using the auxiliary device.

S: Sewing machine 1: Sewing machine 20: Automatic correction device 30: Auxiliary device 31, Guide part 32: Rail part 32a: Back side end part 32b: Front side end part 33: Back side support part (support part)
34: Support leg 36: Switch part 40: Front side support part (support part)
50: Clamping part 54: Upper roller 55: Lower roller 59: Holding part 61: Top part A: Feed direction T: Work table W1: Upper cloth W2: Lower cloth

Claims (5)

A left and right direction that is arranged on the front side of the sewing machine that stitches the upper and lower two cloths having different curved edge edges while feeding the cloths in the feed direction, and is orthogonal to the cloth feed direction in the sewing machine. A sewing machine auxiliary device provided in an automatic correction device that automatically corrects the positional deviation from the edge of each fabric to the seam,
Arranged on the front side of the automatic correction device, an auxiliary device for assisting the feeding operation of one of the fabrics by the sewing machine is provided,
The auxiliary device is
A guide portion arranged so as to extend toward the automatic correction device,
The end portion of one of the cloths is movably provided, and the end of sewing of the end edge portion of the one fabric is held in a tensioned state to apply a resistance force to the feeding operation of the sewing machine, thereby making the end edge substantially linear. a clamp portion for deforming to Jo, was closed,
The guide part is
A rail portion that linearly extends in the feed direction and that is supported by the clamp portion such that the clamp portion can reciprocate;
An auxiliary device for a sewing machine , comprising: a support portion that supports the rail portion so that a front end portion of the rail portion can be pivoted at a rear end portion so that a vertical position can be adjusted . The auxiliary device for the sewing machine according to claim 1 ,
The clamp portion has upper and lower rollers that roll while holding the rail portion from both upper and lower sides and can reciprocate along the longitudinal direction of the rail portion,
The rail portion is inclined by the support portion such that the height of the rear end portion of the rail portion is higher than that of the front end portion,
The clamp portion moves above the rail portion due to the resistance of the clamp portion due to its own weight when the roller rolls on the rail portion and moves in an inclined climbing direction from the front end portion to the rear end portion. Auxiliary equipment for sewing machines that is configured to move passively. The auxiliary device for a sewing machine according to claim 1 or 2 ,
The auxiliary device for a sewing machine, wherein the support part is provided with a switch part for releasing the holding state of the one end edge of the material by the clamp part on the sewing end side when the support part comes into contact with the clamp part. A left and right direction that is arranged on the front side of the sewing machine that stitches the upper and lower two cloths having different curved edge edges while feeding the cloths in the feed direction, and is orthogonal to the cloth feed direction in the sewing machine. a positional deviation of the edge of the fabric until the seam of a sewing auxiliary device provided in the automatic correction apparatus for automatically correcting,
Arranged on the front side of the automatic correction device, an auxiliary device for assisting the feeding operation of one of the fabrics by the sewing machine is provided,
The auxiliary device is
A guide portion arranged so as to extend toward the automatic correction device,
The end portion of one of the cloths is movably provided, and the end of sewing of the end edge portion of the one fabric is held in a tensioned state to apply a resistance force to the feeding operation of the sewing machine, thereby making the end edge substantially linear. Clamp part that deforms into a shape,
A feed rate sensor for detecting the feed rate of the cloth in the sewing machine,
A drive unit for moving the clamp unit along the guide unit;
An auxiliary device for a sewing machine, comprising: a control unit that controls the drive unit so that the clamp unit automatically moves on the guide unit in synchronization with the feed speed detected by the feed speed sensor. Comprising a sewing machine for assisting apparatus according to any one of claims 1-4, the sewing machine.

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