TW201738425A - Auxiliary sewing device and sewing machine using the auxiliary sewing device - Google Patents

Abstract

The invention provides an auxiliary sewing device and a sewing machine using the auxiliary sewing device. Sewing machine S comprises a sewing device 1, an automatic compensation device 20, and an auxiliary device 30. The sewing device 1 is used for sewing the end edges of two fabrics W 1 and W 2 individually having an end edge with curve profile different from each other, in a state where both end edges are overlapped, while they are sending from the front side to the far side in the feeding direction A as seen from the worker. The automatic compensation device 20 is disposed on the front side of the sewing machine device 1, and is used for automatically correcting the deviation of a position from the end edge portion of each fabric in the lateral direction orthogonal to the feeding direction A of the fabric in the sewing machine device 1 to the seam. The auxiliary device 30 is disposed on the front side of the automatic compensation device 20, and is used for assisting the feeding operation of one fabric by the sewing machine.

Description

Sewing aid and sewing machine using the same

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

A guide device (such as the one shown in Patent Document 1) provided on a sewing device has been widely known.

Patent Document 1 discloses a sewing material guiding device for a sewing machine for performing automatic control to align the end edge portions of the sewing material. In particular, the guiding device comprises a guide wheel and a wheel. Wherein, the guide wheel has a cylindrical shape, rotates around the rotating shaft, and sends the edge portion of the sewing material to the sewing device side, and the rotating shaft extends in a direction orthogonal to the feeding direction of the sewing device to the sewing material; The outer peripheral portion protrudes from the outer peripheral surface of the guide wheel and is rotatable in the direction of the rotation axis, and the positional deviation is corrected by the rotation, which is between the edge portion of the sewing material and the seam A positional shift that occurs along the direction of the axis of rotation. [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei 06-182074

[Technical problems to be solved by the invention]

Since the guide device of Patent Document 1 is configured such that the guide wheel rotates around the rotation axis extending in a direction orthogonal to the feed direction of the sewing material, if the end edge portion of the sewing material is linear, the guide device is used to When the end edge portion of the linear shape of the sewing material is aligned with the feeding direction, the sewing material can be accurately and easily guided to the sewing device.

However, for example, the end edge portion (cuff portion) of the bodice constituting the shirt and the end edge portion of the sleeve are generally different from each other in a curved shape, and if the guide portion of Patent Document 1 is to be used, the end portion is mutually Two sewing materials of different curved shapes are directed to the sewing device side, and the sewing operator must adjust the interval between the edge portion and the seam by pulling the two sewing materials in the direction orthogonal to the feeding direction. In order to perform the above adjustment work, the sewing skill of the operator is required to be very skilled. Therefore, when an operator with a light experience performs sewing work, there may be a problem such as wrinkling of the stitched portion. In other words, when the sewing material of the patent document 1 is used, the operator of the sewing machine of the patent document 1 is required to have a skill as a sewing master, and it is difficult for an operator who is less experienced. Sewing products with a certain level of quality.

The present invention has been made in view of the above points. The object of the invention is to provide a new device that allows a less experienced operator to sew a sewing product having a predetermined quality requirement when sewing a slit material having a curved edge shape.

- Technical solutions for solving technical problems -

In order to achieve the above object, the present invention has newly provided an auxiliary device for smoothly feeding a sewing material having a curved edge shape to a sewing device and an automatic correcting device.

In particular, the invention of the first aspect relates to a sewing assisting device which is provided on an automatic correcting device which is arranged on the front side of the sewing device, wherein the sewing device is used to edge the edge in the feeding direction The end edge portion of the upper and lower two pieces of the slit material having different curved shapes is sewn to each other, and the automatic correction device is used for automatically correcting the positional deviation, which is the positional deviation In the left-right direction orthogonal to the feeding direction of the sewing device to the sewing material, the position from the edge portion of each sewing material to the seam is shifted. The sewing assisting device is characterized in that it comprises an auxiliary device which is arranged on the front side of the automatic correcting device, the auxiliary sewing device performs a feeding action on a sewing material, the auxiliary device comprising: a guiding portion arranged to face the automatic correcting device And a clamping portion provided on the guiding portion and movable for clamping and tensioning the end end side of the end edge portion of the sewing material to apply resistance to the feeding action of the sewing device, thereby allowing The edge portion is deformed to be approximately linear.

According to the first aspect of the invention, the assisting device clamps and tensions the end portion of the end portion of the one piece of the sewn material to apply a resistance to the feeding operation of the sewing device, whereby the end portion can be deformed into an approximate Straight. In other words, when the upper and lower two sewn materials whose end edges are different in shape from each other are sewn together, the end edge portion of one piece of the sewn material is changed from a curved shape to a substantially linear shape by an auxiliary device, and the sewn material can be directly used. It is sent to the automatic assisting device in the feeding direction. On the other hand, only the other sewing material is moved in the left-right direction orthogonal to the feeding direction, and the interval between the edge portion and the seam can be adjusted while moving. In other words, it is also possible to: use an auxiliary device to change the edge portion of one piece of sewing material from a curved shape to an approximately linear shape, and to make the curved shape of another sewing material along the edge of the edge portion The edge of the slit material is moved to sew the edge portions of the two sewing materials. In this way, by providing the auxiliary device to assist the sewing device in the feeding operation of one sewing material, the possibility of occurrence of defects such as wrinkles in the stitched portion is reduced, and the burden on the operator can be reduced, so the experience is still shallow. The operator can also sew sewing products that meet the required quality requirements.

According to a second aspect of the invention, in the invention of the first aspect, the guide portion includes: a rail portion that extends linearly toward a feeding direction, and the entraining portion is supported by the rail portion and can be The rail portion moves back and forth; the support portion supports the rail portion at both end portions of the rail portion and the rear end portion is rotatable to ensure that the upper and lower positions of the front end portion can be adjusted.

In the second aspect of the invention, the tension state of the sewing material between the nip portion and the sewing device can be appropriately adjusted by adjusting the vertical position of the front end portion of the rail portion.

The invention of the third aspect is as follows, characterized in that, in the invention of the second aspect, the entraining portion includes an upper roller and a lower roller, and the upper roller and the lower roller are in a state of sandwiching the rail portion from the upper and lower sides Rotating and reciprocating along the longitudinal direction of the rail portion, the height of the rear end portion of the rail portion is inclined higher than the front end portion due to the presence of the support portion, and the entraining portion is configured as: when the upper roller and When the lower roller moves on the rail portion in the obliquely rising direction from the front end portion to the rear end portion of the rail portion, the chuck portion is hindered by its own weight and passively moves on the rail portion.

In the third aspect of the invention, the entrainment portion is hindered by the self-weight when the entrainment portion is moved in the direction in which the upper roller and the lower roller are tilted upward on the rail portion from the front end portion toward the rear end portion. Further, since it is passively moved on the rail portion, the feeding operation of the sewing device can be matched with a simple structure without using a special electric component, and the sewing end side of the edge portion of one piece of the sewing material can be clamped and tensioned.

According to a second aspect of the present invention, in the second or third aspect of the present invention, a switch portion is provided on the support portion, and the switch portion causes the switch portion to contact the clip portion The nip portion releases the clamped state on the end side of the stitching of the edge portion of the one piece of the sewn material.

In the fourth aspect of the invention, the entraining portion moves on the rail portion in a state in which the end portion of the end portion of the sewn material is gripped to be in contact with the switch portion, and the entraining portion faces the end portion of the sewn material. The clamped state on the end side of the stitching is released. By using the switch unit as described above, the clamping state of the one piece of the sewn material can be released with a simple configuration, and the end of the sewn end portion can be smoothly conveyed to the sewing device, and then the entrainment can be utilized. The gravity or the like of the part itself returns the engraving portion to the front side along the inclined rail portion.

The invention of the fifth aspect is as follows: based on the invention of the first aspect, the auxiliary device includes: a feed speed sensor for detecting a feed speed of the sewing device to the sewing material; and a driving portion for the chucking portion Moving along the guide portion; the control portion controls the drive portion to ensure that the grip portion automatically moves on the guide portion in synchronization with the feed speed detected by the feed speed sensor.

In the fifth aspect of the invention, it is possible to control so that the nip portion can be actively moved on the rail portion, and the speed of the nip portion always corresponds to the feed speed.

A sixth aspect of the invention relates to a sewing machine characterized in that the sewing machine comprises the sewing assisting device according to any one of the first to fifth aspects of the invention.

The invention of the sixth aspect can exhibit the same actions and effects as those of the first aspect of the invention.

[Effects of the Invention]

According to the present invention, the auxiliary feeding device is provided to assist the feeding operation to ensure that the auxiliary device sets the edge portion of the sewing material when the upper and lower sewing materials having the curved edges of the opposite end portions are sewn together. The end of the stitching is clamped and tightened, and a resistance is applied to the feeding action of the sewing device. As a result, there is a possibility that defects such as wrinkles in the sewn portion are reduced, and the burden on the operator can be reduced. Therefore, an operator who is less experienced can also sew a sewn product that meets the predetermined quality requirements.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be noted that the following embodiments are merely illustrative of the nature of the invention, and are not intended to limit the invention, the application thereof, or the use thereof.

1 and 2 show a sewing machine S according to an embodiment of the present invention, and the main components of the sewing machine S are a sewing device 1, an automatic correction device 20, and an auxiliary device 30. Each device will be described in detail below. It should be noted that in the present embodiment, the sewing device 1, the automatic correction device 20, and the auxiliary device 30 are all provided on the work table T.

In the following description, the positional relationship indicated by "upper side (upper side)" and "lower side (lower side)" is the up and down direction of the sewing machine S. In the case of the sewing apparatus 1 observed by the sewing machine using the sewing machine S, the positional relationship indicated by the "front side" is the side closer to the sewing operator with respect to the sewing apparatus 1, and the position indicated by the "rear side". The relationship is the one that is away from the sewing operator based on the sewing device 1. The “left-right direction” indicates a direction orthogonal to the feeding direction A of the sewing material to be described later in plan view.

[sewing device]

The sewing device 1 is an overlock sewing machine mainly used for sewing. Specifically, the sewing apparatus 1 is configured to be able to overlap the edge portions of the upper and lower sewing materials W1 and W2 (see FIG. 9 ) having curved edges that are different from each other in the end edge portion. The edge portions of the sewing materials W1 and W2 are fed to the feeding direction A as seen by the sewing operator, and the both end edges are sewn together. In addition, in FIG. 9, the upper side sewing material W1 shows the sleeve part of a shirt, and the lower side sewing material W2 shows the body of a shirt.

As shown in FIGS. 1 to 3, the sewing apparatus 1 includes a main body portion 2, and a cylinder bed portion 3 having a substantially rectangular box shape is attached to a substantially central portion of the main body portion 2 in the vertical direction.

A needle plate 4 is attached to the upper portion of the cylindrical land portion 3 in a horizontal state for carrying the sewing material fed from the front side to the feeding direction A. A needle hole (not shown) and a feed groove (not shown) are provided in the needle plate 4. Here, the needle drop hole is for allowing the sewing needle 7 to be described later to be inserted into the inside of the cylindrical land portion 3, and the feed groove (not shown) extends in the feeding direction A. A feed dog (not shown) is provided inside the feed chute, and the sewing material placed on the upper surface of the needle plate 4 is sent out while moving in an elliptical motion in synchronization with the vertical movement of the needle bar 6 in the feed groove.

A sewing machine head 5 is attached above the cylindrical base portion 3. A needle bar 6 and a sewing needle 7 are provided at a lower portion of the sewing machine head 5. Here, the needle bar 6 extends downward toward the needle plate 4, and the sewing needle 7 is fixed to the lower end portion of the needle bar 6. A drive mechanism (not shown) is built in the sewing machine head 5 for driving the needle bar 6 up and down. An arm portion 8 is attached below the sewing machine head 5, and a binder portion 11 is provided on the arm portion 8.

According to the sewing apparatus 1 described above, the sewing material is placed on the upper surface of the needle plate 4, and the body portion 2 is driven by the pressing portion 11 against the sewing material, whereby the end portion of the sewing material can be used with the sewing needle 7. Lock the edges. It should be noted that the sewing apparatus 1 of the present embodiment employs a known mechanical structure. The detailed description of the other configurations other than the above-described configuration will be omitted.

[automatic correction device]

As shown in FIGS. 1 to 3, the automatic correcting device 20 is disposed on the front side of the sewing device 1 for automatically correcting the positional shift. Here, the positional deviation refers to a positional deviation from the edge portion of each of the sewing materials to the seam in the left-right direction orthogonal to the feeding direction A of the sewing apparatus 1 with respect to the sewing material.

Specifically, as shown in FIG. 3, the automatic correcting device 20 includes a bracket 21A on which two timing pulleys 22, 22 are arranged side by side in the left-right direction with a space therebetween. The feed belt 24 composed of the timing belt is wound between the pulleys 22, 22 in a state in which the teeth on the inner peripheral surface thereof are engaged with the timing pulley. A motor 23 is mounted on the bracket 21A for driving one of the pulleys 22. The motor 23 operates to drive the pulleys 22, 22 forward or reverse, and the feed belt 24 moves in the left and right direction. The coefficient of friction of the outer peripheral surface of the feed belt 24 ensures that the feed belt 24 can transport the sewing material.

A bracket 2a is attached to the upper surface of the main body portion 2, and the bracket 2a includes a protruding portion 2b that protrudes toward the front side to a position directly above the feeding belt 24. A pressing cylinder 28 is attached and fixed to the protruding portion 2b, and is constituted by a cylinder extending in the vertical direction. The piston rod 28a of the pressing cylinder 28 penetrates the projection 2b of the bracket 2a and extends to the lower side thereof, and at the end (lower end) of the piston rod 28a, a lifting portion 27 is mounted which moves together with the piston rod 28a. The lifting portion 27 has a cylindrical shape, and a hemispherical shaped pressing portion 27a is formed at a lower end portion thereof. With the extending operation of the pressing cylinder 28, the lifting portion 27 moves downward together with the piston rod 28a, and the hemispherical shape is pressed. The material portion 27a presses the sewing material on the feed belt 24, and in this state, the sewing material is conveyed in the left-right direction by the movement of the feed belt 24.

The detecting portion (not shown) automatically detects the positional deviation between the end edge portion of the sewing material sent to the needle plate 4 and the slit in the left-right direction. The external air supply device (not shown) starts to supply air after receiving the detection signal from the detection unit. The air enters the compression cylinder 28 and the compression cylinder 28 begins to operate.

That is, based on the detection signal of the detecting portion, after the pressing cylinder 28 is extended, the lifting portion 27 of the lower end of the piston rod 28a is lowered, and the pressing portion 27a at the lower end thereof is compared with the sewing material placed on the feeding belt 24. Strong contact. Then, the motor 23 is driven based on the detection signal of the detecting unit, whereby the sewing material moves in either of the left and right directions with the movement of the feeding belt 24 in a state where the sewing material is sandwiched by the nip portion 27a and the feeding belt 24. In this way, the positional deviation from the edge of each sewing material to the seam in the left-right direction is automatically corrected. It should be noted that when the automatic correction is completed, the extending operation of the pressing cylinder 28 is stopped and the retracting operation is started, and the lifting portion 27 is raised to return to the original state.

〔assisting equipments〕

As shown in FIGS. 1 and 2, the auxiliary device 30 is disposed on the front side of the automatic correcting device 20, and is configured to assist the sewing device 1 in performing a feeding operation for one piece of sewing material. The auxiliary device 30 includes a guide portion 31 and a chucking portion 50. Therein, the guide portion 31 is arranged to extend toward the automatic correcting device 20, and the chucking portion 50 is provided on the guide portion 31 and is movable. The manner in which the two are constructed will be described in detail below.

As shown in FIGS. 1 and 4, the guide portion 31 includes a rail portion 32 supported by the rail portion 32 and reciprocally movable. The rail portion 32 has an elongated and substantially plate shape and extends linearly in the feeding direction A, and is disposed such that the opposite sides in the thickness direction are located on the left and right sides, and the two sides in the upper and lower width directions extend along the upper and lower vertical faces. . The guide portion 31 includes a support portion, that is, a rear side support portion 33 and a front side support portion 40 for supporting the rail portion 32 at both end portions in the longitudinal direction of the rail portion 32.

The rear side support portion 33 is provided on the rear side of the rail portion 32, and the rear side end portion 32a of the support rail portion 32 is rotated in the vertical plane. Specifically, the work table T is located near the front side of the automatic assist device 30. As shown in FIG. 5, a leg 34 extending upward is attached to the work table T, and at the upper portion of the leg 34, the rail portion 32 is The rear side end portion 32a is rotatably supported by a rotating shaft 35 on the rear side in the horizontal direction.

As shown in FIGS. 1 and 4, the front side support portion 40 is provided on the front side of the rail portion 32, and the front side end portion 32b of the support rail portion 32 is raised and lowered in the vertical direction, and its height position is variable. Specifically, the work table T is located away from the front side of the automatic assist device 30. As shown in FIG. 6, a through hole H is formed in the work table T, and the base portion 41 is fixedly mounted on the work table so as to straddle the through hole H. T. A plate-shaped elevating slide portion 43 extending in the vertical direction is attached to the left side of the base portion 41 in such a manner that the elevating slide portion 43 is supported by the base portion 41 and is fixed to the base portion 41 by two screws V and V. And it is slidable (upliftable) in the longitudinal direction with respect to the metal fixing member 42 having an approximately "L" shape. The elevating slide portion 43 is inserted into the through hole H of the work table T, and the upper end portion thereof is supported by the front side rotation shaft 44 in the horizontal direction to ensure that the front end portion 32b of the rail portion 32 is rotatable.

The adjustment cylinder 45 is constituted by a cylinder that extends in the up-and-down direction in an upright state, and is fixed to the base portion 41 in a state in which a piston rod (not shown) is inserted through the base portion 41, and the piston rod of the adjustment cylinder 45 passes through the operation. The through hole H of the table T extends to the lower side thereof, and the end portion (lower end portion) is integrally coupled with the lower end portion of the elevating slide portion 43 and moves together, by adjusting the rotating shaft 44 and the rear end portion 32a of the cylinder 45. The connection state between the rear side support portions 33 allows the elevation slide portion 43 to move up and down in the vertical direction, whereby the vertical position of the front end portion 32b of the rail portion 32 can be adjusted. As shown in FIG. 4, the upper and lower positions of the elevating slider portion 43 are adjusted by the adjustment cylinder 45, and the rail portion 32 is inclined such that the rear end portion 32a is higher than the front end portion 32b.

Then, as shown in FIGS. 5, 7, and 8, the entraining portion 50 includes a base portion 51 having an approximately "T" shape. A plate-shaped roller support portion 53 is disposed on the upper right side of the base portion 51, and is spaced apart from the base portion 51 and is parallel to the base portion 51. The roller support portion 53 is integrally attached to the upper portion of the right surface of the base portion 51 by the two columnar connecting portions 52 and 52, and is opposed to the right surface of the base portion 51 with a space therebetween. In the lower portion of the left surface (the surface opposite to the base portion 51) of the roller support portion 53, for example, the two upper rollers 54, 54 are supported to be rotatable about the axis in the horizontal direction of the left and right, and the upper rollers 54, 54 are horizontally arranged with each other There is a gap between the width directions. Immediately below the lower portion of the right surface of the base portion 51 and between the upper rollers 54, 54, the lower roller 55 is supported to be rotatable about the axis in the horizontal direction. As shown in FIGS. 1 and 4, in a state where the engraving portion 50 is provided on the rail portion 32, the upper rollers 54, 54 and the lower roller 55 are rotated by sandwiching the rail portion 32 from the upper and lower sides of the rail portion 32, and Thereby, the entraining portion 50 can reciprocate in the longitudinal direction of the rail portion 32.

On the other hand, a clamping cylinder 56 is fixed to the left surface of the base portion 51, which is constituted by a cylinder including a piston rod 56a that protrudes upward. Air supply ports 57, 57 are provided in the clamp cylinder 56, and air supply pipes 58, 58 for external air supply means (not shown) are inserted. The compressed air is supplied from the external air supply device to the clamp cylinder 56 via the air supply ports 57, 57, and the clamp cylinder 56 starts to extend, and the protruding length of the piston rod 56a changes. A circular clamp portion 59 is integrally fixed to the upper portion of the piston rod 56a of the clamp cylinder 56, and a cylindrical projection 60 projecting upward is provided on the upper surface of the clamp portion 59.

A top plate portion 61 is attached to the upper end portion of the base portion 51 by screwing, and is located above the clamp portion 59 and extends to the left side. The top plate portion 61 is provided with a circular hole portion 62 penetrating the top plate portion 61, and the convex portion 60 of the clamp portion 59 is inserted in a state of being fitted with a gap.

As shown in FIG. 8, when the external air supply device supplies the compressed air into the clamp cylinder 56, the clamp cylinder 56 starts to extend, and the piston rod 56a and the clamp portion 59 move upward together, and the clamp portion The convex portion 60 of 59 is inserted into the hole portion 62 of the top plate portion 61 (see a broken line in Fig. 8). Then, as long as the external air supply device continues to supply air into the clamp cylinder 56, the inserted state is maintained. By the above operation of the clamp portion 59, it is possible to sandwich the end side of the stitching of the edge portion of one piece of the sewing material.

As shown in FIG. 4, since the rear end portion 32a of the rail portion 32 is inclined higher than the front end portion 32b, the engraving portion 50 is inclined to the front side of the inclined rail portion 32 due to its own weight as long as no other external force acts. mobile. However, in a state in which the sewn portion 50 is sandwiched by the sewn end portion of the sewing material end portion, the sewing material is placed on the sewing device 1, and the sewing material is fed to the feeding direction A, the engraving portion 50 is The fed sewing material is pulled upward from the front end portion 32b of the rail portion 32 toward the rear end portion 32a. That is, when the entraining portion 50 moves on the rail portion 32 in a direction in which the cutting portion 50 is inclined from the front end portion 32b of the rail portion 32 toward the rear end portion 32a, the engraving portion 50 is hindered by its own weight and passive on the rail portion 32. Move on the ground. For example, after the lower side sewing material W2 (body) shown in Fig. 9 is placed on the auxiliary device 30 and the sewing device 1 is started to operate, the cutting portion 50 is hindered by its own weight, and the lower side sewing material W2 is The end portion of the end edge portion is sandwiched and tensioned, so that the edge portion of the lower side seam W2 is deformed into a substantially straight shape (see Fig. 4).

Here, as shown in FIGS. 4 and 5, a switch portion 36 is provided on the leg 34 of the rear side support portion 33, and is constituted by a limit switch including a contact portion 36a. For example, the switch unit 36 is electrically connected to the external air supply device. When the pinch portion 50 is in contact with the contact portion 36a and the switch portion 36 detects the contact state, the switch portion 36 outputs a switching signal, based on the switch unit 36. By switching the signal, the piston rod 56a of the clamp cylinder 56 moves downward together with the clamp portion 59. As such, when the chucking portion 50 comes into contact with the contact portion 36a of the switch portion 36, the piston rod 56a and the clamp portion 59 of the clamp cylinder 56 of the chucking portion 50 move downward. As a result, the clamped portion 50 is released from the sewing end side of the one end edge portion of the sewing material, and the chucking portion 50 is moved forward along the inclined rail portion 32 by its own weight.

As shown in FIGS. 1 and 4, a stopper portion 37 is attached to the rail portion 32, which can position the engraving portion 50 to a predetermined position. The stopper portion 37 is fixed to the rail portion 32 and is movable to an arbitrary position. Due to the presence of the stopper portion 37, even if the grip portion 50 moves forward along the inclined rail portion 32 due to its own weight, it will be hit by The stopper 37 positioned at a predetermined position does not continue to move to the front side.

[The role and effect of the embodiment]

As described above, the sewing machine S according to the present embodiment can apply the resistance to the feeding operation of the sewing device 1 by sandwiching and tightening the sewing end side of the edge portion of one piece of the sewing material by the auxiliary device 30. The end edge is deformed to be approximately linear. As shown in the present embodiment, in the upper and lower sewing materials W1 and W2 having the curved edge shapes of the mutually different end portions, the lower sewing material W2 (body) is deformed from the curved shape to the approximate straight line by the assisting device 30. In this manner, the end edge portion of the lower side seam W2 can be sent to the automatic assisting device 30 in the feeding direction A. As for the upper side sewing material W1 (sleeve portion), the auxiliary device 30 is not used, but the edge and the feeding direction are used. A is orthogonal to the left and right direction to move the lower side seam W2 while adjusting the interval between the end edge portion and the seam. In other words, the auxiliary device 30 can deform the end edge portion of the lower side seam W2 from a curved shape to a substantially linear shape, and the curved shape of the upper side sewing material W1 can be made based on the edge portion of the lower side sewing material W2. The edge portions of the sewing materials W1, W2 are sewn together while moving along the edge portion of the lower side seam W2.

Therefore, by providing the above-described auxiliary device 30, the sewing device 1 is assisted to perform a feeding operation for one piece of sewing material, and when the upper and lower two sewing materials having mutually different curved shapes at the end edges are sewn, the stitching portion is formed. The possibility of defects such as wrinkles is reduced, and the burden on the operator can be reduced. Therefore, an operator with less experience can also sew a sewing product that meets the required quality requirements.

The guide portion 31 includes a rail portion 32 and support portions 33 and 40. By adjusting the upper and lower positions of the front end portion 32b of the rail portion 32, the sewing material between the engraving portion 50 and the sewing device 1 can be tightened. The status is adjusted appropriately.

When the entraining portion 50 including the upper roller 54 and the lower roller 55 moves in a direction in which it is inclined from the front end portion 32b toward the rear end portion 32a, the entraining portion 50 is hindered by its own weight and is passive on the inclined rail portion 32. Since the ground moves, it is possible to match the feeding operation of the sewing apparatus 1 with a simple structure without using a special electric component, and to clamp and tension the end side of the seam of the end edge portion of the sewing material.

The switch portion 36 is provided on the rear side support portion 33. When the pinch portion 50 comes into contact with the rear side support portion 33, the switch portion 36 releases the stitching end portion of the engraving portion 50 to the end edge portion of the sewn material. Therefore, the clamped state of the engraving portion 50 on the side of the rear side support portion 33 can be released with a simple configuration, so that the end end side of the sewn end portion can be smoothly sent. Sewing device 1. Further, after that, it is also possible to return to the front side along the inclined rail portion 32 by the self-weight of the chucking portion 50.

[Other embodiments]

The engraving portion 50 of the sewing machine S according to the above embodiment performs a movement in which the entraining portion 50 moves on the rail portion 32 in a direction in which it is inclined from the front end portion 32b of the rail portion 32 toward the rear end portion 32a. The grip portion 50 is passively moved on the rail portion 32 by the self-weight. But it is not limited to this. For example, the auxiliary device 30 may further include: a feed speed sensor for detecting a feed speed of the sewing device 1 to the sewing material; a drive portion that drives the chuck portion 50 to move along the guide portion 31; and a control portion that controls the drive portion In order to ensure that the grip portion 50 is automatically moved on the guide portion 31 in synchronization with the feed speed detected by the feed speed sensor. With the above-described auxiliary device 30, it is possible to control so that the entraining portion 50 can be actively moved on the rail portion 32, and the speed of the entraining portion 50 always corresponds to the feed speed.

In the engraving portion 50 of the correction device 30 of the sewing machine S according to the above-described embodiment, the clamping cylinder 56 is used as a power source, and the sewing end side of the edge portion of one piece of the sewn material is sandwiched by the outside air. The supply device supplies air. However, the cutting portion 50 may be powered by other devices (such as a motor, an electromagnet, etc.).

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

[Industrial Applicability]

The present invention can be industrially utilized as an auxiliary device provided on a sewing device, and a sewing machine using the same, which is used for upper and lower sewing materials having curved shapes of mutually different end edges. Stitching.

S‧‧ sewing machine
1‧‧‧Sewing device
20‧‧‧Automatic calibration device
30‧‧‧Auxiliary devices
31‧‧‧Director
32‧‧‧Track Department
32a‧‧‧ rear end
32b‧‧‧ front side
33‧‧‧Back side support (support)
34‧‧‧ feet
36‧‧‧Switch Department
40‧‧‧ Front side support (support)
50‧‧‧Clamping Department
54‧‧‧Upper roll
55‧‧‧ Lower roll
59‧‧‧Clamping Department
61‧‧‧ top board
A‧‧‧Feeding direction
T‧‧‧ workbench
W1‧‧‧ upper sewing material
W2‧‧‧ underside seam

Fig. 1 is a perspective view showing a sewing apparatus according to an embodiment of the present invention as seen from above. Fig. 2 is a perspective view showing the sewing device as seen from the side. Fig. 3 is a partially enlarged perspective view showing the sewing apparatus and the automatic correcting apparatus shown in Fig. 2; Fig. 4 is a front view of the auxiliary device. Fig. 5 is a partially enlarged side elevational view showing the rear side support portion and the entraining 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 entraining portion as viewed from below. Fig. 8 is a side view of the chucking portion. Fig. 9 is a schematic view showing the shape of the body and the sleeve of the shirt before sewing.

1‧‧‧Sewing device

2‧‧‧ Main body

2a‧‧‧ bracket

2b‧‧‧Protruding

3‧‧‧Cylinder table

5‧‧‧Sewing machine head

8‧‧‧arm

20‧‧‧Automatic calibration device

23‧‧‧Motor

27‧‧‧ Lifting Department

28‧‧‧Compact cylinder

28a‧‧‧Piston rod

30‧‧‧Auxiliary devices

31‧‧‧Director

32‧‧‧Track Department

32b‧‧‧ front side

33‧‧‧Back side support (support)

34‧‧‧ feet

37‧‧‧Departure

40‧‧‧ Front side support (support)

50‧‧‧Clamping Department

S‧‧ sewing machine

T‧‧‧ workbench

A‧‧‧Feeding direction

Claims (6)

A sewing assisting device is provided on an automatic correcting device which is arranged on the front side of the sewing device, wherein the sewing device is used for sewing the upper and lower slits of the curved edge shapes which are different from each other along the feeding direction The edge portion of the material is sued to suture the edge portions of the material, and the automatic correcting device is used for automatically correcting the positional deviation, which is orthogonal to the feeding direction of the sewing material with the sewing device. In the left-right direction, from the edge portion of each of the sewing materials to the positional offset between the seams, the sewing assisting device is characterized in that it includes an auxiliary device disposed on the front side of the automatic correcting device. Assisting the sewing device to perform a feeding operation on a sewing material, the auxiliary device comprising: a guiding portion arranged to extend toward the automatic correcting device; and a feeding portion provided on the guiding portion and Moving, for gripping the end end side of the end edge portion of the one piece of sewing material and keeping it in a tensioned state to apply resistance to the feeding action of the sewing device, thereby allowing the end edge Is deformed into a substantially linear shape. The sewing assisting device according to claim 1, wherein the guide portion includes: a rail portion extending linearly toward the feeding direction, the grip portion being supported by the rail portion and being slidable on the rail portion Moving back and forth; a support portion that supports the rail portion at both end portions of the rail portion and the rear end portion is rotatable to ensure that the upper and lower positions of the front side end portion can be adjusted. The sewing assisting device according to claim 2, wherein the entraining portion includes an upper roller and a lower roller, and the upper roller and the lower roller are rotatable along a state in which the rail portion is sandwiched from upper and lower sides The rail portion reciprocates in the longitudinal direction, and the height of the rear end portion of the rail portion is inclined higher than the front end portion due to the presence of the support portion, and the entraining portion is configured to be When the front end portion of the rail portion is inclined toward the rear end portion and moves in the rail portion, the grip portion is hindered by its own weight and passively moves on the rail portion. The sewing assisting device according to claim 2 or 3, wherein a switch portion is provided on the support portion, and the switch portion releases the pinch portion when the switch portion comes into contact with the pinch portion The clamped state of the end edge portion of the slit material at the end of the stitching. The sewing assisting device according to claim 1, wherein the auxiliary device comprises: a feed speed sensor for detecting a feed speed of the sewing device to the sewing material; and a driving portion that drives the chucking portion along the The guide portion moves; the control portion controls the drive portion to ensure that the grip portion automatically moves on the guide portion in synchronization with the feed speed detected by the feed speed sensor. A sewing machine, characterized in that the sewing machine includes the sewing assisting device according to any one of claims 1 to 5.