KR20220152689A - Device and method for stitching - Google Patents

Abstract

The present invention provides a backstitch device. According to an aspect of an embodiment of the present invention, the backstitch device comprises: a base plate of which upper and lower materials to be sewn stacked on top of each other are supported on an upper surface; a detection unit which detects a location of an edge of at least one of the upper and lower materials to be sewn; a stitching unit including a needle that backstitches while moving up and down to sew edges of the upper and lower materials to be sewn; a transfer unit which intermittently linearly transports the upper and lower materials to be sewn supported on the upper surface of the base plate or rotates the upper and lower materials to be sewn supported on the upper surface of the base plate, respectively, in a state being spaced apart from the upper and lower materials to be sewn; and a control unit which controls the backstitch unit and the transfer unit so that the edges of the upper and lower materials to be sewn are backstitched along the location of the edge of the at least one of the upper and lower materials to be sewn detected by the detection unit. According to the present invention, a material to be sewn can be linearly transported and rotated by a simple configuration.

Description

Backstitch device {DEVICE AND METHOD FOR STITCHING}

The present invention relates to a backstitch device.

In general, in the case of a bar, in a state in which two bar materials, for example, two bar materials of the same shape are placed so that they overlap, the edges of the two bar materials are transferred while being molded to each other, or stitched continuously to the edge of the mat. It is made by stitching the supplied rim member. Recently, various methods for automating this have been proposed.

Referring to the prior patent documents, conventionally, the detection unit detects the shape of the rim of the bar material, and accordingly, while the bar material is transported, stitching is performed. More specifically, in the prior art, in a state in which a plurality of upper rollers and a plurality of lower rollers rotating around a horizontal axis of rotation are positioned to face each other up and down, each outer circumferential surface is the upper surface of the upper bar and the lower bar By rotating in contact with the lower surface of the water, and each of the upper roller and the lower roller rotates at a different number of rotations, the bar material is transferred while the direction is varied according to the shape of the rim.

However, according to the backstitch device according to the prior art, the following problems occur.

First, in the prior art, the position of the edge of the bar is detected, and accordingly, the bar is sewn while being transported. However, in the prior art documents, the specific method, in particular, a specific configuration for selectively transferring the bar in a straight line or curve in the case of a bar in which straight lines and curves are repeated, and a specific configuration in which transfer and stitching are performed along the edge of the bar This is not disclosed at all.

On the other hand, in the prior art, the bar is moved linearly by the presser foot reciprocating in a predetermined trajectory, and when in contact with the upper roller and the lower surface of the lower bar, which is in contact with the upper surface of the upper bar, by adjusting the number of rotations of the lower roller , it can be transferred while the direction is varied according to the shape of the rim. However, in the case of a relatively thin bar material, in the process of linear movement by the presser foot or rotation by the roller, only a part of the bar material in contact with the presser foot or roller is linearly transported or rotated, which may cause wrinkles, which is In the end, it causes a problem that accurate stitching cannot be achieved.

Furthermore, in the prior art, the linear transport and rotation of the bar material is made by each configuration. Therefore, in the prior art, the number of parts for linear transport and rotation of the bar is increased, and the control is also complicated.

Japanese Unexamined Patent Publication No. 1995-096091 (Name: sewing device for the rim of the carpet) Republic of Korea Patent Registration No. 2093407 (Name: Mat backstitching device) Republic of Korea Patent Registration No. 2110255 (Name: Mat backstitching device) Republic of Korea Utility Model Publication No. 2000-0019309 (Name: Quilting) Republic of Korea Patent Registration No. 1354512 (Name: Sewing Machine with Border Cloth Binder Attached) Republic of Korea Patent Registration No. 1558155 (Name: vehicle mat structure)

An object of the present invention is to solve the problems caused by the prior art as described above, and an object of the present invention is to provide a lockstitch device configured to be accurately conveyed according to the shape of the rim of the bar.

An object of the present invention is, in particular, to provide a backstitch device configured to allow accurate transfer and backstitch even in the case of a thin material.

Another object of the present invention is to provide a backstitch device configured to more simply transfer and sewn bar material.

One aspect of the lockstitch device according to an embodiment of the present invention for achieving the above object is a base plate supported on the upper surface of the upper and lower bar materials stacked vertically; A detection unit for detecting the position of at least one edge of the upper and lower rods; A stitching unit including a needle for stitching while moving up and down to sew the upper and lower edges of the sewing material; In a state where the needle is spaced apart from the upper and lower bar materials, the upper and lower bar materials supported on the upper surface of the base plate are intermittently linearly transferred or the upper and lower bar materials supported on the upper surface of the base plate Transfer units for rotating each; A control unit for controlling the operation of the stitching unit and the transport unit so that the upper and lower edges of the upper and lower sewing materials are sewn according to the position of at least one edge of the upper and lower sewing materials detected by the detection unit; includes

In one aspect of the embodiment of the present invention, the control unit, according to the position of at least one edge of the upper and lower bar materials detected by the detection unit, only the linear transfer of the upper and lower bar materials, or the The operation of the transfer unit is controlled so that the upper and lower bar materials are linearly transferred and rotated.

In one aspect of the embodiment of the present invention, the transfer unit is rotated around a rotational axis parallel to the surfaces of the upper and lower bar materials to linearly transfer the upper and lower bar materials, and orthogonal to the surface of the upper and lower bar materials It rotates around the axis of rotation to rotate the upper and lower bar materials.

In one aspect of the embodiment of the present invention, the transfer unit, a linear transfer unit for intermittently linearly moving the upper and lower rods; And a rotation transfer unit for rotating the linear transfer unit so that the upper and lower bar materials rotate; includes

In one aspect of the embodiment of the present invention, the linear transfer unit, in a state in which the outer circumferential surface is in contact with the upper surface of the upper bar and the lower surface of the lower bar, respectively, about the first transfer rotation axis in the horizontal direction orthogonal to the transfer direction a pair of rotating first transport rollers; And a pair disposed to be spaced apart from the first transfer roller and rotating about a second transfer rotation axis parallel to the first transfer rotation axis in a state in which the outer circumferential surface is in contact with the upper surface of the upper bar material and the lower surface of the lower bar material, respectively. a second conveying roller; wherein the first conveying roller extends in a direction orthogonal to the conveying direction and is spaced apart by a predetermined separation distance in a direction opposite to the conveying direction based on a backstitch line where the needle is positioned; The second conveying rollers are spaced apart from each other by the distance in the conveying direction based on the backstitch line.

In one aspect of the embodiment of the present invention, the first conveying roller rotates at a relatively low speed compared to the second conveying roller.

In one aspect of the embodiment of the present invention, the first conveying roller stops relatively earlier than the second conveying roller.

In one aspect of the embodiment of the present invention, the first and second conveying rollers are disposed spaced apart from the needle in a direction orthogonal to the conveying direction, and the rotary conveying unit is disposed coaxially with the second needle. The first and second conveying rollers are rotated about the rotation axis.

According to the backstitch device according to the embodiment of the present invention, the following effects can be expected.

First, in the embodiment of the present invention, the linear transfer or / and rotation of the bar is selectively performed by the transfer unit according to the shape of the edge of the bar detected by the detection unit. Therefore, according to the embodiment of the present invention, it is possible to transfer according to the shape of the rim of the bar and sewn to it.

In addition, in the embodiment of the present invention, in a state in which the first and second transfer rollers disposed to be spaced apart in the transfer direction of the bar with respect to the needle are in contact with the bar, linear transfer or / and rotation of the bar is performed. In particular, in the embodiment of the present invention, by differently controlling the rotation time or rotational speed of the first and second rollers, it is possible to maintain the unfolded state of the bar without causing wrinkles in the bar. Therefore, according to the embodiment of the present invention, it is possible to more accurately expect linear transfer or / and rotation of the bar according to the shape of the rim, and finally, accurate stitching to the rim of the bar can be expected.

And in the embodiment of the present invention, when the first and second conveying rollers rotate around the axis of rotation, the bar material is linearly conveyed, and when the first and second conveying rollers rotate around the second axis of rotation, the bar material is rotated. . Therefore, according to the embodiment of the present invention, linear transfer and rotation of the bar can be made with a simpler configuration.

1 is a plan view schematically showing a backstitch device according to an embodiment of the present invention.
Figure 2 is a longitudinal cross-sectional view schematically showing an embodiment of the present invention.

Hereinafter, the configuration of an embodiment of a backstitch device according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a plan view schematically showing a backstitch device according to an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view schematically showing an embodiment of the present invention.

1 and 2, a backstitch device according to an embodiment of the present invention includes a base plate 100, a sensing unit 200, a backstitch unit 300, a transfer unit 400, and a control unit C. include In particular, in this embodiment, both bar material (MA) (MB), substantially linear transfer and rotation of the upper and lower bar material (MA) (MB) are performed by the transfer unit 400.

More specifically, the base plate 100 is a place where the upper and lower bar material (MA) (MB) to be sewn is supported on its upper surface. The upper and lower bar material (MA) (MB), the rim is stitched and fixed by a thread, the rim is sewn while being transported while supported on the upper surface of the base plate 100.

Meanwhile, in this embodiment, a backstitch opening 110 is formed in the base plate 100 . The backstitch opening 110 is formed by cutting a portion of the base plate 100 . Substantially, the lockstitch opening 110, a needle 310 to be described later, penetrates in a lowered state for lockstitch.

In addition, first and second transfer openings 121 and 122 are formed in the base plate 100 . The transfer openings 121 and 122 are where the first and second lower rollers 411B and 412B, which will be described later, are respectively exposed for contact with the lower surface of the lower bar material MB. The transfer openings 121 and 122 are also formed by cutting another part of the base plate 100 in the same way as the backstitch opening 110 . However, the first and second transfer openings 121 and 122 are formed at positions corresponding to the arrangement of the first and second transfer rollers 410 and 420 to be described later.

And the detection unit 200 detects the position of at least one edge of the upper and lower bar material (MA) (MB). Substantially, the detection unit 200, the position of at least one edge of the upper and lower bar material (MA) (MB), which can be varied according to the transfer of the upper and lower bar material (MA) (MB) can be said to detect For example, as the sensing unit 200, a linear scale or the like that moves linearly according to the shape in a state in contact with one side of at least one edge of the upper and lower rods (MA) (MB) may be used. . Of course, the detection unit 200 may be composed of two pieces for detecting the positions of the edges of the upper and lower rod materials (MA) (MB).

In this embodiment, the detection unit 200 is forward of the backstitch unit 300 in the direction in which the upper and lower bar materials (MA) (MB) are transported, that is, in a direction opposite to the transport direction (A). to be spaced apart from the backstitch unit 300. Therefore, one side of at least one edge of the upper and lower sewing materials (MA) (MB) whose position value is detected by the detection unit 200, as will be described later, by the backstitch unit 300 It will be said to precede the other side of the rim of the upper and lower sewing materials (MA) (MB) to be sewn. In this embodiment, the sensing unit 200 is spaced apart from the backstitch unit 300, substantially the needle 310, by a transfer distance l, which will be described later.

Substantially, the detection unit 200, according to the shape of at least one edge of the upper and lower bar material (MA) (MB) detected according to the transfer of the upper and lower bar material (MA) (MB) Detect the position of at least one edge of the upper and lower bar material (MA) (MB) from the variable position value. In this embodiment, the detection unit 200, the upper and lower bar material (MA) (MB) of the position value of at least one edge of the separation distance (d) with respect to the reference line (L1) which is a virtual straight line detect That is, the detection unit 200, the position of at least one edge of the upper and lower bar material (MA) (MB) according to the transfer of at least one edge of the upper and lower bar material (MA) (MB) is to detect a value that moves linearly with respect to the reference line (L1) in a direction orthogonal to the reference line (L1). Here, the reference line (L1) is an imaginary straight line extending in a direction parallel to the conveying direction (A), and the needle 310 is positioned on the reference line (L1).

More specifically, the detection unit 200, the reference line (L1) of one side of at least one edge of the upper and lower bar material (MA) (MB) located on the detection line (L2), which is an imaginary straight line. ) to sense the separation distance (d). Hereinafter, one side of at least one edge of the upper and lower rod materials MA and MB located on the detection line L2 and detected by the detection unit 200 is referred to as a detection point P.

By the way, the rims of the upper and lower rods (MA) (MB) are positioned to be spaced apart from the reference line (L1). Therefore, in the present embodiment, the separation distance d detected by the sensing unit 200 is a relative value with respect to a preset reference distance d0, that is, the separation distance d is equal to the reference distance d0. It is possible to determine the shape of the rim of the upper and lower bar material (MA) (MB) according to whether the same or more or less. In other words, when the edge shape of the upper and lower rods (MA) (MB) is a straight section, a constant distance between the sensing point (P) and the sensing unit 200, that is, the separation distance (d) maintains the reference distance d0. However, when the edge shape of the upper and lower rods (MA) (MB) is a curved section, the sensing point (P) and the sensing unit 200 are variable, that is, the separation distance (d) is the It varies beyond or below the reference distance d0. That is, as shown in Figure 1, when the edge shape of the upper and lower bar material (MA) (MB) is a curved section, the separation distance (d) is increased to exceed the reference distance (d0) or the It is reduced to less than the reference distance d0. Substantially, when the sensing unit 200 is moved to the left on the drawing in FIG. 1 around the reference line (L1) by the transfer of the upper and lower bar materials (MA) (MB) (part ⓐ in FIG. 1) ), the separation distance (d) is increased to exceed the reference distance (d0), and when moving to the right in FIG. 1 centered on the reference line (L1) (part ⓑ in FIG. 1), the separation distance ( d) is reduced below the reference distance d0.

The backstitch unit 300 sews the edges of the upper and lower sewing materials (MA) (MB). In this embodiment, the lockstitch unit 300 includes a needle 310 that locks while moving up and down in order to sew the rims of the upper and lower sewing materials (MA) (MB). Substantially, while the needle 310 ascends and descends and repeats insertion and separation into the upper and lower sewing materials (MA) (MB), the edges of the upper and lower sewing materials (MA) (MB) are sewn by a thread. . The descending needle 310 sequentially passes through the upper and lower sewing materials Ma and Mb and the backstitch opening 110.

In this embodiment, as described above, the needle 310 is stitched while moving up and down on the reference line (L1). Hereinafter, a virtual straight line orthogonal to the same plane as the reference line L1, that is, on the upper surface of the base plate 100, and at which the needle 310 is located on the intersection with the reference line L1 is a stitching line ( L3) is called.

The transfer unit 400 transfers the upper and lower bar materials MA and MB supported on the upper surface of the base plate 100 in the transfer direction A. In addition, the transfer unit 400 rotates the upper and lower bar materials (MA) (MB) and the upper and lower bar materials (MA) (MB) supported on the upper surface of the base plate 100. .

In other words, the transfer unit 400, according to the position of at least one edge of the upper and lower bar material (MA) (MB) sensed by the detection unit 200, of the base plate 100 The upper and lower bar materials (MA) (MB) supported on the upper surface are linearly conveyed or / and rotated. In particular, in this embodiment, the linear transfer and rotation of the upper and lower bar materials (MA) (MB) by the transfer unit 400, the needle 310 is the upper and lower bar materials (MA) ( MB) is made in a state of separation. Therefore, as in the prior art, when the needle 310 descends and the upper and lower sewing materials MA (MA) (MB) rotate in a state where they pass through the upper and lower sewing materials (MA) (MB), the needle ( 310) there is a risk that excessive external force acts on one side of the upper and lower bar materials (MA) (MB) through which the upper and lower bar materials (MA) (MB) are damaged, but in this embodiment, Such a phenomenon may be prevented.

Substantially, the transfer unit 400 rotates about a rotation axis parallel to the surface of the upper and lower bar materials (MA) (MB) to linearly transfer the upper and lower bar materials (MA) (MB). . And the transfer unit 400 rotates about the rotation axis 420S orthogonal to the surface of the upper and lower bar materials (MA) (MB) to rotate the upper and lower bar materials (MA) (MB) .

To this end, the transfer unit 400 includes a linear transfer unit 410 and a rotation transfer unit 420 . The linear transfer unit 410 intermittently linearly moves the upper and lower bar materials (MA) (MB), and the rotation transfer unit 420 rotates the upper and lower bar materials (MA) (MB). The linear conveying part 410 is rotated.

More specifically, the linear transfer unit 410 includes first and second transfer rollers 410 and 420 . The first conveying roller 410, the first upper conveying roller 411a whose outer circumferential surface is in contact with the upper surface of the upper bar material (MA) and the outer circumferential surface of which is in contact with the lower surface of the lower bar material (MB) 1 includes a lower conveying roller 411b. The second conveying roller 420 also includes a second upper conveying roller 412a and a second lower conveying roller 412b like the first conveying roller 410 .

At this time, the first conveying rollers 410 are spaced apart from each other by a preset distance d in a direction opposite to the conveying direction A based on the backstitch line L3. Further, the second conveying roller 420 is disposed to be spaced apart by the distance d in the conveying direction A based on the backstitch line L3. In other words, the first and second conveying rollers 410 and 420 are arranged at regular intervals in a direction parallel to the reference line L based on the backstitch line L3. In addition, the first and second conveying rollers 410 and 420 are spaced apart from the needle 310 in a direction orthogonal to the conveying direction A. Therefore, in a state in which the first and second conveying rollers 410 and 420 are in total contact with the upper surface of the upper bar material MA and the lower surface of the lower bar material MB, the upper and lower bar materials (MA) (MB) can be transferred.

Further, the first and second transport rollers 410 and 420 rotate about first and second transport rotation shafts 411Sa, 411Sb, 412Sa, and 412Sb parallel to the backstitch line L3, respectively. do. Therefore, when the first and second conveying rollers 410 and 420 rotate while their outer circumferential surfaces are in contact with the upper surface of the upper bar material MA and the lower surface of the lower bar material MB, respectively, the upper And the lower bar material (MA) (MB) is linearly transferred to the upper and lower bar material (MA) (MB) in the conveying direction (A).

Substantially, the needle 310 is inserted into or spaced apart from the upper and lower bar material (MA) (MB) while moving up and down, and the first and second conveying rollers 410 and 420 are the needle 310 Since the upper and lower bar materials (MA) (MB) rotate in a spaced apart state, the upper and lower bar materials (MA) (MB) are moved by the first and second conveying rollers 410 and 420. intermittent linear transfer. In addition, the distance at which the upper and lower bar materials MA and MB are linearly transported by rotation of the first and second transport rollers 410 and 420 may be defined as the transport distance l. And the stitch spacing in the process of being sewn by the backstitch unit 300 as much as the distance that the upper and lower bar materials (MA) (MB) are transported by the first and second transport rollers 410 and 420 is set

In this embodiment, by applying a predetermined tensile force to the upper and lower bar material (MA) (MB) of a relatively thin thickness to prevent the upper and lower bar material (MA) (MB) from being wrinkled. For example, the first transport roller 410 may rotate at a relatively low speed compared to the second transport roller 420 . At this time, the number of rotations of the first and second conveying rollers 410 and 420 may be set according to the type and substantially the thickness of the upper and lower bar materials MA and MB. As another example, the first transport roller 410 may be stopped relatively earlier than the second transport roller 420 . Therefore, according to this embodiment, the upper and lower bar materials (MA) (MB) in contact with the outer circumferential surface of the first conveying roller 410 by relatively high-speed rotation or additional rotation of the second conveying roller 420 The outer circumferential surface of the second conveying roller 420 is in contact with one side of the tension, that is, by pulling the upper and lower bar materials (MA) (MB), the upper and lower bar materials (MA) (MB) Wrinkling is prevented.

In addition, at least one of the first and second upper conveying rollers 411A and 412A and the first and second lower conveying rollers 411B and 412B, for example, the first and second upper conveying rollers (411A) (412A) may be moved up and down to selectively contact the upper surface of the upper bar material (Ma). This is to prevent interference with the first and second conveying rollers 410 and 420 in the process of supporting the upper and lower bar materials MA and MB on the upper surface of the base plate 100.

Meanwhile, the rotation conveying part 420 rotates the first and second conveying rollers 410 and 420 about the second rotary shaft 420S. Substantially, the rotary conveying unit 420, the outer peripheral surface of the first and second conveying rollers 410 and 420 are in contact with the upper surface of the upper bar material (MA) and the lower surface of the lower bar material (MB) In this state, the first and second conveying rollers 410 and 420 are rotated around the second rotating shaft 420S. Accordingly, the upper and lower bar materials MA and MB may rotate about the second rotational shaft 420S.

In particular, in this embodiment, the second rotating shaft 420S is disposed coaxially with the needle 310 . Therefore, according to this embodiment, even in a state in which the needle 310 does not penetrate the upper and lower sewing materials (MA) (MB), the upper and lower sewing materials (MA) (MB) are substantially the needles It is possible to rotate around (310).

And the control unit (C), according to the position of at least one edge of the upper and lower bar material (MA) (MB) sensed by the detection unit 200, the upper and lower bar material (MA) (MB) The operations of the backstitch unit 300 and the transfer unit 400 are controlled so that the edges of ) are sewn. In particular, the control unit (C), the upper and lower edges of the upper and lower sewing materials (MA) (MB) are sewn by the backstitch unit 300, the upper and lower parts sensed by the detection unit 200 The linear movement of the upper and lower bar materials (MA) (MB) by determining the edge shape of the upper and lower bar materials (MA) (MB) according to the position of at least one edge of the bar materials (MA) (MB) and The operation of the transport unit 400 is controlled so that rotation is sequentially performed or only linear movement is performed.

More specifically, the control unit (C), the position of the rim of the upper and lower bar material (MA) (MB), substantially, the separation distance (d) detected by the detection unit 200 is the In the case of the reference distance (d0), that is, in the case where at least one edge of the upper and lower bar material (MA) (MB) is a straight section, the first and second conveying rollers 410 and 420 are By rotating around the 1st and 2nd transfer rotation shafts 411Sa, 411Sb, 412Sa, 412Sb, the upper and lower bar materials MA and MB are controlled to be transferred by the transfer distance l. At this time, the control unit (C), the rotational speed or / and time of the first and second conveying rollers 410, 420 so that wrinkles do not occur in the upper and lower bar materials (MA) (MB) can be adjusted.

On the other hand, the control unit (C), when the separation distance (d) detected by the detection unit 200 is greater than or less than the reference distance (d0), that is, the upper and lower bar material (MA) (MB When the edge of ) is a curved section, the first and second conveying rollers 410 and 420 are rotated about the second rotational shaft 420S by the rotation conveying unit 420, thereby causing the upper and lower parts to be rotated. The bar material (MA) (MB) is controlled to rotate, respectively.

At this time, the control unit (C) rotates the upper and lower bar materials (Ma) (Mb) so that the sensing point (P) is positioned on the imaginary straight line (L3), the transfer unit (400) ) to control the operation of Therefore, the backstitch by the backstitch unit 300 will be made at a position drawn in at regular intervals from the rim of the upper and lower sewing materials (MA) (MB).

Next, the control unit (C), after the linear transfer or / and rotation of the upper and lower bar materials (MA) (MB) is completed, the upper and lower bar materials (MA) by the needle 310 ( The operation of the backstitch unit 300 is controlled so that the edge of MB) is sewn. Substantially, the control unit (C) repeats the insertion and separation of the upper and lower sewing materials (MA) (MB) while the needle 310 ascends and descends, while repeating the upper and lower sewing materials (MA) (MB). ) is controlled so that the edges are stitched.

In other words, the control unit (C) controls the operation of the backstitch unit 300 so that the needle 310 is continuously inserted into and separated from the upper and lower sewing materials MA and MB. And the control unit (C), in a state where the needle 310 is spaced apart from the upper and lower bar material (MA) (MB), the first and second conveying rollers 410, 420 or / and The rotary transfer unit 420 operates to control the operation of the transfer unit 400 so that the upper and lower bar materials (MA) (MB) are linearly transferred or/and rotated.

For example, at the time when the needle 310 descends and comes into contact with the upper and lower bar materials (MA) (MB), of a drive motor (not shown) that provides a driving force for lifting and lowering the needle 310. The position of the rotor (not shown) may be defined as a reference point (0°). And, while the needle 310 rotates from the reference point, that is, 0 ° to 180 °, the needle 310 descends and descends while being inserted into the upper and lower bar materials MA and MB, and the rotor rotates at 180 °. While rotating at 360 °, it will ascend and descend while being spaced apart from the upper and lower rods (MA) (MB). And the control unit (C), the linear transfer or / and rotation of the upper and lower bar material (MA) (MB) by the transfer unit 400 only while the rotor rotates from 180 ° to 360 ° It is possible to control the operation of the transfer unit 400 to achieve. Therefore, in a state in which the needle 310 is spaced apart from the upper and lower bar materials MA and MB, linear transfer or/or rotation of the upper and lower bar materials MA and MB can be performed. .

In the embodiment of the present invention configured as described above, as described above, the transfer and stitching according to the rim shape of the upper and lower bar materials (MA) (MB) can be accurately performed. In particular, in the embodiment of the present invention, not only the occurrence of wrinkles in the upper and lower bar materials (MA) (MB) is prevented, but also the upper and lower bar materials (MA) (MB) by the transfer unit 400 ), since the linear feed and rotation are performed, the configuration can be simplified.

Within the scope of the basic technical idea of the present invention, many other modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

100: support plate 200A, 200B: detection unit
300: backstitch unit 400: transfer unit
500A, 500B: rotating roller 600: lifting unit
700: partition plate C: control unit

Claims (8)

Base plate 100 supported on the upper surface and the upper and lower rod materials (MA) (MB) are stacked up and down;
A sensing unit 200 for detecting a position of at least one edge of the upper and lower rod materials (MA) (MB);
A stitching unit 300 including a needle 310 for stitching while moving up and down to sew the edges of the upper and lower sewing materials (MA) (MB);
In a state in which the needle 310 is spaced apart from the upper and lower bar materials (MA) (MB), the upper and lower bar materials (MA) (MB) supported on the upper surface of the base plate 100 intermittently A transfer unit 400 that linearly transfers or rotates the upper and lower bar materials (MA) (MB) supported on the upper surface of the base plate 100, respectively;
The sewing unit so that the edges of the upper and lower sewing materials (MA) (MB) are sewn according to the edge position of at least one of the upper and lower sewing materials (MA) (MB) detected by the detection unit 200 300 and a control unit (C) for controlling the operation of the transfer unit 400; A lockstitch device comprising a.
According to claim 1,
The control unit (C), according to the position of at least one edge of the upper and lower bar material (MA) (MB) detected by the detection unit 200, the upper and lower bar material (MA) ( Lockstitch device for controlling the operation of the transfer unit 400 so that only the linear transfer of the MB) is performed, or the linear transfer and rotation of the upper and lower bar materials (MA) (MB) are performed.
According to claim 1,
The transfer unit 400,
The upper and lower bar materials (MA) (MB) are rotated about a rotational axis parallel to the surface of the upper and lower bar materials (MA) (MB) to linearly transfer the upper and lower bar materials (MA) (MB),
Lockstitch device for rotating the upper and lower bar material (MA) (MB) by rotating about a rotational axis orthogonal to the surface of the upper and lower bar material (MA) (MB).
According to claim 1,
The transfer unit 400,
Linear transfer unit 410 for intermittently linearly moving the upper and lower rods (MA) (MB); and
A rotation transfer unit 420 for rotating the linear transfer unit 410 so that the upper and lower bar materials (MA) (MB) rotate; A lockstitch device comprising a.
According to claim 4,
The linear transfer unit 410,
A first transport rotation shaft (411Sa) (411Sb) in a horizontal direction orthogonal to the transport direction (A) in a state in which the outer circumferential surface is in contact with the upper surface of the upper bar material (MA) and the lower surface of the lower bar material (MB), respectively a pair of first conveying rollers 410 rotating around; and
The first conveying roller 410 is disposed away from, and the first conveying rotating shaft 411Sa in a state in which the outer circumferential surface is in contact with the upper surface of the upper bar material MA and the lower surface of the lower bar material MB, respectively a pair of second conveying rollers 420 rotating around second conveying rotational axes 412Sa (412Sb) parallel to (411Sb); including,
The first transport roller 410 extends in a direction orthogonal to the transport direction A and moves in a direction opposite to the transport direction A based on a backstitch line L3 where the needle 310 is located. It is arranged to be spaced apart by a predetermined separation distance (d),
The second transfer roller 420 is arranged to be spaced apart from the backstitch line (L3) in the transfer direction (A) by the distance (d).
According to claim 5,
The first transport roller 410 rotates at a relatively low speed compared to the second transport roller 420.
According to claim 5,
The first transport roller 410 stops relatively earlier than the second transport roller 420.
According to claim 5,
The first and second conveying rollers 410 and 420 are disposed spaced apart from the needle 310 in a direction orthogonal to the conveying direction A,
The rotation transfer unit 420 rotates the first and second transfer rollers 410 and 420 around a second rotation shaft 420S disposed coaxially with the needle 310.

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