TWI820969B - sewing device - Google Patents

Abstract

The present invention provides a sewing device that can press and sew the object to be sewn even in the vicinity of a needle if necessary when the conveyor device conveys the object to be sewn from the upstream side to the downstream side with respect to the sewing machine. The sewing device includes: a conveying device that presses the object to be sewn against the edge of the workbench for conveyance; and a guide that guides the object to be sewn in such a manner that the object to be sewn is brought close to the upper surface of the workbench. When viewed from above, a space area is formed between the conveying area and the needle drop area of the clamping part of the conveying device on the workbench in the direction orthogonal to the conveying direction of the object to be sewn. When viewed from above, the arrangement area of the guide member satisfies the following requirements: The above conditions are: the condition that the arrangement area is located in an area outside the space area, and the condition that it includes at least an area upstream of the conveyance direction of the object to be sewn with respect to the needle entry area. Since such a space area is formed, the conveyance area of the clamping part can be brought close to the needle.

Description

sewing device

The present invention relates to a sewing device including a conveying device for automatically conveying an object to be sewn from an upstream side to a downstream side with respect to a sewing machine.

Sewing machines are usually equipped with a presser foot. As an example of a presser foot, a presser foot having a shape surrounding a pinhole when viewed from above is known (Patent Document 1). More specifically, the presser foot disclosed in Patent Document 1 has a bifurcated shape when viewed from above. For convenience of explanation, each part of the presser foot is given a name. Each part that bifurcates into two parts is called a single leg part, and the part where the two single leg parts join together is called a joint part. Furthermore, in the presser foot, the needle moves in and out of the space between the two single leg parts, and is used in a state where the downstream side of the space in the conveyance direction of the object to be sewn is closed by the joint part, and the space is used in a state where the The opening is on the upstream side in the conveying direction of the sewn products. In addition, the sewing machine disclosed in Patent Document 1 adopts a manual conveying method in which the worker conveys the object to be sewn by hand. In addition, the sewing machine disclosed in Patent Document 1 is provided with a feed dog under the presser foot. While the workpiece is sandwiched between the feed dog and the presser foot, the feed dog sends the workpiece downstream relative to the sewing machine.

In addition, as an example of a sewing device, there is known a sewing device that employs not only a sewing machine but also a conveying device (automatic conveying system) for automatically conveying an object to be sewn from the upstream side to the downstream side with respect to the sewing machine (Patent Document 2). FIG. 12 of Patent Document 2 discloses a conveying device called a second sewing machine guide. Furthermore, this sewing device is configured such that the pressure plate of the second sewing machine guide portion presses the object to be sewn on one side of the width direction of the object to be sewn, and when the pressure plate is conveyed, the edge of the object to be sewn passes directly under the needle of the sewing machine. nearby.

Prior technical literature patent documents Patent Document 1: Japanese Patent Application Publication No. Sho 62-44292 Patent Document 2: Japanese Patent No. 6423568

However, Patent Document 2 does not disclose the structure of the sewing machine in detail, and it is not clear whether there is a presser foot. However, sewing machines usually have a presser foot. The presser foot presses the object to be sewn during sewing to prevent the object to be sewn from being lifted together with the needle.

Here, as a hypothetical sewing device, it is assumed that the sewing machine of Patent Document 2 adopts the manual conveyance type presser foot disclosed in Patent Document 1, that is, a bifurcated presser foot.

The hypothetical sewing device will be described with a top view. As shown in FIG. 10 , the hypothetical sewing device has a bifurcated single leg portion 91 of the presser foot 9 disposed between the pressure plate of the conveyor device and the needle 8 . As a result, the position where the pressing plate of the conveying device presses the object to be sewn is located away from the single leg portion in the width direction of the presser foot. In FIG. 10 , the conveying area of the conveying device on the workbench is shown with hatching, and an elongated oval-shaped pinhole is shown between the two bifurcated single legs 91 .

However, when sewing with a sewing machine equipped with a presser foot, the sewing quality of the object to be sewn may be insufficient. In this case, even if you want to use the conveyor device to press and convey the object to be sewn as close as possible to the needle, the single leg of the presser foot will cause obstruction. In addition, it is known that technical knowledge is as follows: Compared with the case where sewing is performed while pressing and conveying the object to be sewn at a position far enough away from the needle, sewing is performed while pressing and conveying the object to be sewn near the needle. The sewing quality of the objects to be sewn is better.

The present invention was created in view of the above situation, and its object is to provide a sewing device that can press and close the needle as needed when the conveyor device conveys the object to be sewn from the upstream side to the downstream side with respect to the sewing machine. Sewing items to be sewn.

The sewing device of the present invention includes: a workbench; a sewing machine main body; a conveying device that presses the edge of the object to be sewn against the edge of the workbench and transports it from the upstream side to the downstream side relative to the sewing machine body; and a guide member that allows the object to be sewn to be Guide the object to be sewn close to the upper surface of the workbench. Moreover, the conveying device includes: a clamping part that presses the object to be sewn against the work table; and a conveying part that conveys the clamping part. Furthermore, when viewed from above, a space area is formed between the conveyance area and the needle drop area of the clamping portion of the workbench in the direction orthogonal to the conveyance direction of the object to be sewn. When viewed from above, the arrangement area of the guide satisfies the following requirements: Conditions: The condition that the arrangement area is located in an area outside the space area, and the condition that the arrangement area includes at least an area upstream of the conveyance direction of the object to be sewn with respect to the needle drop area.

In addition, in order to further clarify the arrangement area of the guide member, the sewing device is as follows.

That is, the arrangement area of the guide part satisfies the following conditions in a plan view: the arrangement area is located around the needle drop area, and the arrangement area is far away from the conveyance area of the clamping part.

In addition, in order to make it as narrow as possible, the preferred arrangement area of the guide is as follows.

That is, the area passing through the needle drop area in the direction perpendicular to the conveyance direction of the clamping portion in plan view is set as the first reference area, and the arrangement area of the guide portion in plan view satisfies the following conditions: with respect to the above-mentioned first reference area The area is only the area on the upstream side of the conveying direction of the object to be sewn.

As a specific example, the guide member is arranged in the following manner.

That is, the guide is fixed to the surface on the upstream side of the sewing machine body in the conveyance direction of the object to be sewn via the bracket.

In addition, the sewing device of the present invention transports the object to be sewn while pressing it against the workbench from the upstream side to the downstream side relative to the main body of the sewing machine. To clarify, it does not include other devices, such as from the lower side of the workbench toward the guide. The device for conveying the sewn objects while compressing them is preferably as follows.

That is, the conveying device is the only device for conveying the objects to be sewn.

The sewing device of the present invention makes the arrangement area of the guide part meet various conditions, especially the space area between the needle drop area and the conveying area of the clamping part, so that the conveying area edge of the clamping part can be kept away from the guide The position of the component's configuration area is close to the needle.

As shown in Figures 1 and 6, the sewing device according to the first embodiment of the present invention includes: a workbench 1, a sewing machine 2, and an object to be sewn 3 pressed against the workbench 1 from the upstream side relative to the sewing machine 2 Conveying device 4 for downstream side conveying.

As shown in FIG. 5 , the conveying device 4 includes a clamping part 41 that presses the object to be sewn 3 against the workbench 1 and a conveying part 42 that conveys the clamping part 41 . In this embodiment, the conveying device 4 is the only device that conveys the object to be sewn 3 .

The conveying unit 42 is, for example, a multi-axis multi-joint robot. Furthermore, the robot arm 42a at the top end of the multi-joint robot extends downward, and the clamping portion 41 is fixed to the top end portion, that is, the lower end portion of the robot arm 42a. Furthermore, the conveying part 42 moves the clamping part 41 according to a preset procedure, and conveys the clamping part 41 while pressing it against the workbench 1 .

The clamping part 41 includes a clamping part main body 41a that presses the object to be sewn 3, and an impact absorbing part 41b that connects the clamping part main body 41a and the top of the robot arm 42a to absorb impact. In addition, the clamping part main body 41a includes a plurality of components in the figure, but is a single plate in this embodiment.

The impact absorbing part 41b includes: a fixed arm 41c that extends horizontally and the middle part of the extended length direction is fixed to the top of the mechanical arm 42a; and a rod 41d that can be positioned relative to both ends of the fixed arm 41c in the length direction. It is guided to move up and down; a compression coil spring 41e, which surrounds the rod 41d and is penetrated by the rod 41d; and a stopper 41f, which supports the rod 41d in a suspended form relative to the fixed arm 41c. In addition, the stopper 41f is fixed to the upper end of the rod 41d. Moreover, the diameter of the stopper 41f is larger than that of the rod 41d, and cannot pass through the through-hole (not shown) formed in the fixed arm 41c in the vertical direction.

The compression coil spring 41e is arranged between the clamping portion main body 41a and the fixed arm 41c. When the object to be sewn 3 is conveyed on the workbench 1, the conveyance part 42 is driven to press the clamping part main body 41a against the workbench 1 via the robot arm 42a. Therefore, the rod 41d integrated with the clamping part main body 41a rises relative to the fixed arm 41c, the compression coil spring 41e contracts between the clamping part main body 41a and the fixed arm 41c, and the clamping part main body 41a compresses the object to be sewn 3 on the upper surface of workbench 1. In this manner, the clamping portion main body 41 a is conveyed from the upstream side to the downstream side with respect to the sewing machine 2 in a state where the object to be sewn 3 is sandwiched between the worktable 1 and the object to be sewn 3 .

As shown in FIG. 1 , the sewing machine 2 includes: a sewing machine main body 2 a that sews the object to be sewn 3 ; and a guide 5 that guides the object to be sewn 3 in such a manner that the object to be sewn 3 is brought close to the upper surface of the workbench 1 ; Bracket 6, which installs the guide 5 on the sewing machine body 2a; and positioning plate 7, which becomes a mark of the direction of the straight line when sewing the object 3 while conveying it along a straight line.

The conveying direction of the object to be sewn 3 relative to the sewing machine 2 depends on the movement of the conveying part 42 of the conveying device 4 (the setting of the control device that controls the drive of the conveying part 42). Moreover, the conveying part 42 of the conveying device 4 of this embodiment adopts a multi-joint robot as mentioned above, which can make the conveying part 42 not only move in a straight line direction, but also move in various directions. Therefore, it can be seen at first glance that the conveying part 42 The conveying direction X is uncertain. However, the basic method of using the sewing machine 2 (the basic conveying direction of the object to be sewn 3) is to sew the object to be sewn 3 while conveying it along a straight line as mentioned above. Therefore, in the present invention, the direction of the straight line is set as the direction of the object to be sewn. The conveying direction X of the sewn article 3. Furthermore, in this embodiment, "the conveyance direction X of the object to be sewn 3" refers to the direction in which the positioning plate 7 can guide the end of the object to be sewn 3 along a straight line. In addition, the conveying direction

The "conveying direction X of the object to be sewn 3" is the direction from right to left in Figure 4. Therefore, the "left-right direction" in this embodiment is consistent with the left-right direction in FIG. 4 . In addition, the "upstream side in the conveyance direction X" with respect to the object refers to the right side with respect to the object in Fig. 4 . In addition, the "downstream side in the conveyance direction X" with respect to the object refers to the left side with respect to the object in FIG. 4 .

In addition, the conveyance direction of the clamping portion 41 is consistent with the conveyance direction X of the object to be sewn 3 .

In addition, "the direction Y perpendicular to the conveyance direction X of the object to be sewn 3" is also called the front and rear direction, and is the up and down direction in Fig. 4 . The upper direction in Figure 4 is the rear direction, and the lower direction in Figure 4 is the front direction.

As shown in FIGS. 1 and 4 , the table 1 includes a needle plate 2t of the sewing machine 2 and a conveyor table 11 as components other than the needle plate 2t. In addition, in this embodiment, in addition to the needle plate 2t and the conveying table 11, the workbench 1 also includes a part of the positioning plate 7 of the sewing machine 2 as a part of the workbench 1. The upper surfaces of part of the needle plate 2t, the transport table 11 and the positioning plate 7 are all horizontal planes, and are aligned so as to be substantially on the same plane.

The positioning plate 7 includes: a positioning main body part 71 that has a vertical surface and can position the end of the object to be sewn 3; and a lower plate part 72 that is bent at a right angle with respect to the positioning main body part 71. It extends and can guide the lower surface side of the object to be sewn 3; and a fixing plate portion 73 is connected to the positioning main body portion 71 and is fixed to the sewing machine main body 2a. In addition, the lower plate portion 72 constitutes a part of the workbench 1 .

The positioning main body 71 is a vertical plate extending in the left-right direction. The lower plate portion 72 is connected to the lower end of the positioning main body 71 , and the fixing plate portion 73 for fixing to the sewing machine body 2 a is connected to the upper end of the positioning main body 71 .

As shown in FIG. 4 , the fixed plate part 73 includes: a first fixed plate part 74 , which is a plate bent at right angles in plan view and fixed to the sewing machine main body 2 a ; and a second fixed plate part 75 , which is arranged relative to the second fixed plate part 75 . 1. The fixing plate portion 74 extends in a right-angled bent shape and is connected to the positioning main body portion 71. In addition, the second fixing plate portion 75 extends toward the side opposite to the lower plate portion 72 relative to the positioning main body portion 71 . In addition, the first fixing plate portion 74 is parallel to the positioning main body portion 71 .

The lower plate portion 72 is arranged on the downstream side in the conveyance direction X with respect to the needle plate 2t.

The conveyance table 11 extends along a straight line in the conveyance direction X when viewed from above, and extends in the left-right direction within the range of the upstream side and the downstream side with respect to the sewing machine 2 . In addition, the transport table 11 is formed with a recessed portion 11c that is recessed in a direction away from the sewing machine 2, and the lower plate portion 72 of the positioning plate 7 and the needle plate 2t are arranged in the recessed portion 11c.

The main body 2a of the sewing machine has a known structure. The upper thread passed through the needle 8 and the lower thread supplied to the lower side of the needle plate 2t of the table 1 are wound to form stitches on the object to be sewn 3 placed on the needle plate 2t. . In addition, in this embodiment, the sewing machine main body 2a is a chain stitch sewing machine that cooperates with the conveying device 4 to perform overlock sewing on one side of the rectangular workpiece to be sewn.

In addition, as shown in FIGS. 2 and 3 , the sewing machine main body 2 a includes a base portion 21 disposed on the lower side relative to the workbench 1 , a column portion 22 standing up from the base portion 21 , and a sewing machine head 23 . It extends from the upper part of the upright column part 22 to face the base part 21 upward.

The sewing machine main body 2a extends in the front-rear direction with the base portion 21 and the sewing machine head 23 separated vertically, and the column portion 22 extends vertically between the base portion 21 and the rear portion of the sewing machine head 23.

The base portion 21 includes a base housing 21a that forms its outer contour, and an internal mechanism housed in the base housing 21a. The internal mechanism is the mechanism that winds the lower line and the upper line. A needle plate 2t having pinholes 1h formed on the upper surface of the base case 21a is provided as a part of the base case 21a.

The sewing machine head 23 includes a sewing head housing 23a that forms its outer contour, and an internal mechanism housed in the sewing head housing 23a. In addition, the internal mechanism is the up and down movement mechanism of the pointer rod or the drive mechanism of the thread take-up rod, etc. Furthermore, the sewing machine head 23 is disposed in a state in which the needle bar 23b of the needle bar driving mechanism protrudes downward from the lower surface of the top of the sewing machine head housing 23a. Furthermore, the needle 8 is attached to the lower end of the needle bar 23b in a state of extending downward.

The column part 22 includes a column housing 22a that forms its outer contour, and an internal mechanism accommodated in the column housing 22a. The internal mechanism is, for example, a mechanism that interlocks the internal mechanism of the sewing machine head 23 and the internal mechanism of the base part 21 . Furthermore, the guide 5 is fixed to the surface of the column housing 22a (the sewing machine main body 2a), which is located above the table 1 and facing the upstream side in the conveyance direction X of the object to be sewn 3, via the bracket 6.

The bracket 6 is composed of multiple components. As shown in FIG. 4 , the bracket 6 includes a first bracket 61 that is fixed to the column portion 22 of the sewing machine body 2 a in a state of extending upstream in the conveyance direction X in a plan view, and a second bracket 62 that is fixed to The top of the first bracket 61 (the end on the upstream side in the conveying direction X) extends directly above the workbench 1 in a plan view along the direction Y orthogonal to the conveying direction X.

The first bracket 61 is a metal plate bent into a downward opening shape. More specifically, as shown in FIG. 2 , the first bracket 61 includes two fixed plate portions 61 a and 61 b, which are arranged in parallel in a state of being separated in the conveyance direction X, and a first bracket main body portion 61 c. The upper ends of the two fixed plate portions 61a and 61b are connected and extend along the conveyance direction X. As shown in FIG. 4 , the first holder main body 61c has a shape extending at right angles in plan view. Specifically, the first rack main body part 61c includes a first plate part 61d extending along the conveying direction X, and a second plate part 61e extending from the upstream end of the first plate part 61d toward the workbench 1 extend. In addition, the downstream fixed plate portion 61a of the two fixed plate portions 61a and 61b is fixed to the column housing 22a of the sewing machine main body 2a. On the other hand, the dimension of the upstream side fixing plate part 61b in the direction Y perpendicular to the conveyance direction X is longer than the downstream side fixing plate part 61a, and fixes the second bracket 62.

As shown in Figure 4, the second bracket 62 is a metal plate bent in an L shape when viewed from above. More specifically, the second bracket 62 includes a second bracket main body portion 62a that is fixed to the upstream fixing plate portion 61b of the first bracket 61 and extends in the conveying direction X toward the upstream side of the needle plate 2t. extending in the orthogonal direction Y; and the end of the fixed plate portion 62b on the upstream side in the conveying direction X is connected to the top end (front end) of the second holder main body 62a in a state of extending along the conveying direction The guide 5 is fixed to the fixing plate portion 62b of the second bracket 62.

The guide 5 is a rigid body, in this embodiment a metal object. As shown in FIGS. 2 and 3 , the guide 5 includes a guide block 51 that guides the object 3 to be sewn close to the upper surface of the workbench 1 and extends along the conveying direction X. ; And the fixing block portion 52 extends upward from the guide block portion 51 and is fixed to the bracket 6 (the fixing plate portion 62b of the second bracket 62). In addition, in this embodiment, screws are used for fixing the guide 5 and the bracket 6, fixing the bracket 6 and the sewing machine main body 2a, or fixing the positioning plate 7 and the sewing machine main body 2a.

As shown in FIG. 3 , the fixed block portion 52 is shorter in the left-right direction than the guide block portion 51 and extends upward from the side of the column portion 22 on the upper surface of the guide block portion 51 . In addition, as shown in FIG. 2 , the fixed block portion 52 is shorter in the front-rear direction (conveyance direction X) than the guide block portion 51 and extends upward from the upper surface of the guide block portion 51 upstream in the conveyance direction X. form.

As shown in FIG. 2 , in the upper surface of the guide block 51 , the portion downstream of the fixed block 52 in the conveying direction ).

The lower surface of the guide block 51 (the lower surface of the guide member 5) includes: a first guide surface 51a, which gradually descends toward the conveying direction X of the object to be sewn 3 (closer to the workbench 1); and a second guide surface 51b, which is adjacent to the first guide surface 51a on the downstream side of the conveying direction X of the object to be sewn 3 and parallel to the upper surface of the workbench 1.

Hereinafter, the arrangement area 5a of the guide 5 in a plan view will be described based on FIG. 6 . First, the premise for determining the arrangement area 5a of the guide 5 is as follows.

In the present invention, the needle drop area 1a on the workbench 1 is the area where the needle 8 just penetrates the workbench 1 . Moreover, in the example of FIG. 6, the needle drop area 1a is circular. In addition, in the present embodiment, the pinhole 1h is an elongated long hole having a shape including the needle drop area 1a as a part thereof, and is a long long hole in the left-right direction. In addition, the needle hole 1h is larger than the outer circumference of the needle 8 so that it does not come into contact with the needle 8. More specifically, it is slightly longer in the front-rear direction than the needle drop area 1a, and is sufficient in the left-right direction compared to the needle drop area 1a. long. In addition, the outer shape of the pinhole 1h when viewed from above is the boundary that separates the inside and outside of the area of the pinhole 1h, so the pinhole 1h is the pinhole area 1h when viewed from the top. Furthermore, the pinhole area 1h on the table 1, that is, the pinhole area 1h in plan view is larger than the needle drop area 1a.

The conveyance area 41L of the clamping part 41 is an area parallel to the conveyance direction X, and is separated from the needle drop area 1a on the side opposite to the column part 22 of the sewing machine main body 2a in the direction Y perpendicular to the conveyance direction X.

Also, set two areas.

The first reference area L1 is an area passing through the needle entry area 1a in the direction Y orthogonal to the conveyance direction X.

The second reference area L2 is an area passing through the needle entry area 1a in the conveyance direction X.

Between the conveyance area 41L of the clamping part 41 and the needle drop area 1a, a space area L3 is formed in the direction Y orthogonal to the conveyance direction X of the clamping part 41. Space region L3 is literally a region where no objects exist. The spatial area L3 is a part of the first reference area L1. Furthermore, in this embodiment, the space region L3 is formed not only between the conveyance region 41L of the clamping part 41 and the needle drop region 1a, but also between the conveyance region 41L of the clamping part 41 and the pinhole region 1h.

Moreover, the arrangement area 5a of the guide 5 in this embodiment is as follows when viewed from above. As shown in FIG. 6 , the arrangement area 5 a of the guide 5 has a rectangular shape and is represented by a dotted area in FIG. 6 . Furthermore, the pinhole area 1h is arranged apart from the arrangement area 5a of the guide 5 on the downstream side in the conveyance direction X. In addition, the entire arrangement area 5a of the guide 5 is arranged separately from the first reference area L1 including the needle entry area 1a as a part of itself on the upstream side in the conveyance direction X. That is, the arrangement area 5a of the guide 5 is arranged only on the upstream side in the conveyance direction X with respect to the first reference area L1. Furthermore, since the first reference area L1 includes the space area L3, the arrangement area 5a of the guide 5 is formed in an area other than the space area L3.

In addition, the arrangement area 5a of the guide 5 partially overlaps the second reference area L2. More specifically, the second reference area L2 is a shape that passes through the middle portion of the arrangement area 5 a of the guide 5 in the front-rear direction (the direction Y orthogonal to the conveyance direction X). Moreover, the arrangement area 5a of the guide 5 includes: an area overlapping the second reference area L2; an area protruding toward the conveyance area 41L side of the clamping portion 41 with respect to the second reference area L2; and an area with respect to the second reference area L2. A region protruding toward the side opposite to the conveyance region 41L of the clamping portion 41 .

In addition, in plan view, the arrangement area 5 a of the guide 5 satisfies the following conditions: the condition of being located around the needle entry area 1 a and the condition of being far away from the conveyance area 41L of the clamping part 41 .

If it is not around the needle drop area 1a, the guide 5 cannot play the role of guiding the object to be sewn to directly under the needle 8 during sewing, and sewing defects are likely to occur. In addition, since the clamping part 41 of the conveying device 4 presses the object to be sewn against the workbench 1, the clamping part 41 plays a role in preventing the object to be sewn 3 and the needle 8 from being lifted together. In addition, the guide member 5 also plays an auxiliary role in preventing the object 3 to be sewn and the needle 8 from being lifted together.

In addition, if the arrangement area 5a of the guide 5 and the conveyance area 41L of the clamping part 41 are not separated, the clamping part 41 will collide with the guide 5. Therefore, if at least one of the clamping part 41 and the guide 5 is not separated, If it is an elastic body, it will affect the transportation, and the collision will cause the clamping state to become unstable or the function of the guide 5 to become unstable, so it is not preferable.

In addition, in order to bring the conveying area 41L of the clamping part 41 as close as possible to the needle 8 (needle drop area 1a), the arrangement area 5a of the guide 5 is preferably as short as possible as compared with the second reference area L2 toward the clamping area. The protrusion amount of the portion 41 on the conveyance area 41L side or the end of the clamping portion 41 on the conveyance area 41L side in the arrangement area 5a is consistent with the second reference area L2.

In the sewing device of the first embodiment described above, in order to satisfy various conditions in the arrangement area 5a of the guide 5, in particular, the space area is set between the needle hole area 1h including the needle drop area 1a and the conveyance area 41L of the clamping part 41. L3, therefore, the conveyance area 41L of the clamping part 41 can be kept close to the needle 8 while being kept away from the arrangement area 5a of the guide 5. In addition, in the sewing device of the first embodiment, the arrangement area 5a of the guide 5 satisfies the condition that it is located only upstream of the conveyance direction X compared to the first reference area L1 or the pinhole area 1h. Ratio can be set to a narrower range.

As shown in FIG. 7 , the arrangement area 5 b of the guide member 5 of the sewing device according to the second embodiment of the present invention is larger than the arrangement area 5 a of the first embodiment.

The arrangement area 5b of the guide 5 is L-shaped in plan view, and is arranged on the side opposite to the conveyance area 41L of the clamping part 41 and on the upstream side in the conveyance direction X, away from the pinhole area 1h including the needle drop area 1a. More specifically, the arrangement area 5b of the guide 5 includes a first arrangement area A which is separated from the first reference area L1 and the pinhole area 1h including the needle drop area 1a as a part of itself on the upstream side in the conveyance direction X. The position extends along the direction Y orthogonal to the conveying direction The opposite side of the conveyance area 41L extends along the conveyance direction X in a state of intersecting the first reference area L1 at right angles.

The first arrangement area A is the same as the arrangement area 5a of the guide 5 in the first embodiment.

The second arrangement area B extends over the upstream and downstream ranges of the first reference area L1 and the pinhole area 1 h in the conveyance direction X.

In the sewing device of the second embodiment, since the arrangement area 5b of the guide 5 includes the first arrangement area A, a part of the arrangement area 5b of the guide 5 (the first arrangement area A) is on the upstream side in the conveyance direction The first reference area L1 and the pinhole area 1h including the needle entry area 1a as a part thereof are separately arranged. In addition, the arrangement area 5b of the guide 5 is formed in an area other than the space area L3 similarly to the arrangement area 5a of the first embodiment. In addition, in plan view, the arrangement area 5 b of the guide 5 satisfies the following conditions: the condition of being located around the needle drop area 1 a and the condition of being far away from the conveyance area 41L of the clamping part 41 .

In addition, the portion of the lower surface of the guide 5 of the second embodiment that forms the first arrangement area A is the same as the lower surface of the guide 5 of the first embodiment. That is, the portion upstream of the conveyance direction X in the first arrangement area A of the lower surface is the first guide surface 51a (a surface that gradually descends toward the conveyance direction The downstream side portion in the conveying direction X in the first arrangement area A is the second guide surface 51b (a surface parallel to the upper surface of the table 1). In addition, in the portion of the lower surface of the guide 5 of the second embodiment that forms the second arrangement area B, the upstream end in the conveyance direction . The first guide surface 51a in the portion forming the second arrangement area B and the first guide surface 51a in the portion forming the first arrangement area A are connected in the direction Y orthogonal to the conveyance direction X.

In addition, the part of the lower surface of the guide member in the second embodiment that is upstream of the needle drop area 1a in the conveying direction The other parts only play a role in preventing the object to be sewn 3 and the needle 8 from being lifted together.

As shown in FIG. 8 , the arrangement area 5c of the guide 5 of the sewing device according to the third embodiment of the present invention is larger than the arrangement area 5b of the second embodiment.

The arrangement area 5c of the guide 5 is U-shaped in plan view. In addition to the above-mentioned first arrangement area A and the second arrangement area B, it is separated from the first reference area L1 and the pinhole area 1h on the downstream side in the conveyance direction X. The position has a third arrangement area C extending from the downstream side of the second arrangement area B toward the conveyance area 41L of the clamping part 41 along the direction Y orthogonal to the conveyance direction X.

The third arrangement area C is arranged facing the first arrangement area A with the pinhole area 1h as the center. In addition, the third arrangement area C is also far away from the conveyance area 41L of the clamping part 41 in the direction Y orthogonal to the conveyance direction X.

In the sewing device of the third embodiment, since the arrangement area 5c of the guide 5 includes the first arrangement area A, a part of the arrangement area 5c of the guide 5 (the first arrangement area A) is on the upstream side in the conveyance direction The first reference area L1 and the pinhole area 1h including the needle entry area 1a as a part thereof are separately arranged. In addition, the arrangement area 5c of the guide 5 is formed in an area other than the space area L3. In addition, the arrangement area 5 c of the guide 5 satisfies the following conditions in a plan view: the condition of being located around the needle drop area 1 a and the condition of being far away from the conveyance area 41L of the clamping part 41 .

In addition, a portion of the lower surface of the guide 5 of the third embodiment that forms the third arrangement area C is the second guide surface 51b (a surface parallel to the upper surface of the table 1).

In addition, the part of the lower surface of the guide 5 in the third embodiment that is upstream of the needle drop area 1a in the conveying direction , but the other parts only play a role in preventing the object 3 to be sewn and the needle 8 from being lifted together.

As shown in FIG. 9 , in the sewing device according to the fourth embodiment of the present invention, details of the workbench 1 , sewing machine 2 and conveyor device 4 are different from those of the sewing device according to the first embodiment. However, the portion of the sewing device of the fourth embodiment regarding the arrangement area 5a of the guide 5 is still the same as that of the sewing device of the first embodiment.

The workbench 1 is composed of a conveyor workbench 12 . In this case, the pinhole 1h is formed in the portion of the transport table 12 that corresponds to the needle plate.

The sewing machine 2 is not provided with the positioning plate 7 of the first embodiment. Since the positioning plate 7 is not provided, compared with the sewing machine 2 of the first embodiment provided with the positioning plate 7, the end of the object 3 to be sewn can be sewn closer to the column portion 22 side of the sewing machine body 2a.

In addition, in the fourth embodiment, the sewing machine main body 2 a is a lockstitch sewing machine, and forms eyelet-shaped straight stitches on the object to be sewn 3 by cooperating with the conveyor device 4 .

In the conveying device 4, the clamping part 41 corresponds to the size of the object to be sewn 3, and the clamping part main body 41a is formed longer in the conveying direction than in the first embodiment. In addition, the clamping portion main body 41a may only be composed of a plate when the object to be sewn 3 is a piece of fabric, but it is preferable to include a penetrable upper and lower fabric when the object to be sewn 3 is an upper and lower piece of overlapping fabric. The sewing machine needle and the structure of the plate on which the sewing machine needle protrudes from the lower surface.

The present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope that does not deviate from the gist of the invention. For example, in the present embodiment, the pinhole 1 h is an elongated long hole shape, but the present invention is not limited to this, and may also be in other shapes represented by a round hole. In addition, in this embodiment, the conveying device 4 uses a multi-axis multi-joint robot as the conveying part 42, but the present invention is not limited to this, and may be a device that only conveys the clamping part along a straight line. In this case, the conveyance direction of the clamping portion coincides with the conveyance direction X of the object to be sewn 3 .

1: workbench 1a: Needle drop area 1h: Pinhole/pinhole area 2: Sewing machine 2a:Sewing machine main body 2t: Needle plate 3: Things to be sewn 4: Conveying device 5: Guide parts 5a: Configuration area 5b: Configuration area 5c: Configuration area 6: Bracket 7: Positioning plate 8: Needle 9: Presser foot 11:Conveying workbench 11c: concave part 12:Conveying workbench 21: Base part 21a: Base shell 22: Column part 22a: Column shell 23: Sewing machine head 23a: Sewing machine head housing 23b: Needle bar 41: Clamping part 41a: Clamping part main body 41b: Impact absorbing part 41c: fixed arm 41d:rod 41e:Compression coil spring 41f:Limiting piece 41L: Conveying area of clamping part 42:Conveying Department 42a: Robotic arm 51: Boot block part 51a: 1st guide surface 51b: 2nd guide surface 52: Fixed block part 61: 1st bracket 61a: Fixed plate part 61b: Fixed plate part 61c: 1st bracket main body part 61d:The 1st board 61e: 2nd plate part 62: 2nd bracket 62a: 2nd bracket main body part 62b: Fixed plate part 71: Positioning the main body 72:Lower plate part 73: Fixed plate part 74: 1st fixed plate part 75: 2nd fixed plate part 91:Single leg A: The first configuration area B: 2nd configuration area C: The third configuration area L1: 1st reference area L2: 2nd reference area L3: space area X: Conveying direction Y: Orthogonal direction

FIG. 1 is a perspective view showing an outline of the sewing device according to the first embodiment of the present invention. Fig. 2 is a front view showing the sewing device according to the first embodiment. Fig. 3 is a right side view of the sewing device according to the first embodiment. Figure 4 is a cross-sectional view along line IV-IV of Figure 2. FIG. 5 is a front view showing the conveying device used in the sewing device of the first embodiment. 6 is a plan view showing the relationship between the needle entry position and the guide in the sewing device according to the first embodiment. 7 is a plan view showing the relationship between the needle entry position and the guide in the sewing device according to the second embodiment. 8 is a plan view showing the relationship between the needle entry position and the guide in the sewing device according to the third embodiment. Fig. 9 is an explanatory diagram showing a sewing device according to the fourth embodiment. Fig. 10 is a plan view showing the relationship between the presser foot, the needle, etc. in the hypothetical sewing device.

1: workbench 1a: Needle drop area 1h: Pinhole, pinhole area 2:Sewing machine 2a:Sewing machine main body 2t: Needle plate 3: Things to be sewn 4: Conveying device 5: Guide parts 6: Bracket 7: Positioning plate 8: Needle 11:Conveying workbench 11c: concave part 22: Column part 23: Sewing machine head 23b: Needle bar 41: Clamping part 61: 1st bracket 62: 2nd bracket 71: Positioning the main body 72:Lower plate part 73: Fixed plate part X: Conveying direction Y: Orthogonal direction

Claims (6)

A sewing device, characterized in that it includes: a workbench (1); a sewing machine main body (2a); and a conveyor device (4) that presses the object to be sewn (3) against the above-mentioned workbench (1) and relative to the sewing machine. The main body (2a) transports the object to be sewn (3) from the upstream side to the downstream side; and the guide member (5) moves the object to be sewn (3) in such a manner that the object to be sewn (3) is brought close to the upper surface of the workbench (1). Guide, the above-mentioned conveying device (4) includes: a clamping part (41), which presses the above-mentioned object to be sewn (3) to the above-mentioned workbench (1); and a conveying part (42), which presses the above-mentioned clamping part The object (3) pressed against the workbench (1) by the clamping portion (41) is conveyed from the upstream side to the downstream side with respect to the sewing machine body (2a), as viewed from above. Between the conveying area (41L) and the needle drop area (1a) of the clamping part (41) on the above-mentioned workbench (1), in the direction orthogonal to the conveying direction (X) of the above-mentioned object to be sewn (3) A space area (L3) is formed on (Y). When viewed from above, the arrangement areas (5a, 5b, 5c) of the guide member (5) satisfy the following conditions: the arrangement areas (5a, 5b, 5c) are located in the above-mentioned space area ( Conditions for areas other than L3), and the arrangement area (5a, 5b, 5c) includes at least the upstream side of the conveyance direction (X) of the object to be sewn (3) with respect to the needle drop area (1a). Regional conditions. The sewing device of claim 1, wherein the above-mentioned arrangement areas (5a, 5b, 5c) of the above-mentioned guide member (5) satisfy the following conditions when viewed from above: The condition that the above-mentioned arrangement area (5a, 5b, 5c) is located around the above-mentioned needle entry area (1a), and the condition that the above-mentioned arrangement area (5a, 5b, 5c) is far away from the conveyance area (41L) of the above-mentioned clamping part (41) . The sewing device of claim 2, wherein an area passing through the needle drop area (1a) in a direction (Y) orthogonal to the conveyance direction (X) of the clamping portion (41) when viewed from above is set as the first The reference area (L1), when viewed from above, the arrangement area (5a) of the guide member (5) satisfies the following conditions: relative to the first reference area (L1), it is only the conveyance of the object to be sewn (3) The area on the upstream side of the direction (X). The sewing device according to any one of claims 1 to 3, wherein the guide member (5) is fixed in the conveying direction (3) of the sewing machine body (2a) toward the object to be sewn (3) via the bracket (6). X) on the upstream side. The sewing device of any one of claims 1 to 3, wherein the above-mentioned conveying device (4) is the only device for conveying the above-mentioned object to be sewn (3). Such as the sewing device of claim 4, wherein the above-mentioned conveying device (4) is the only device for conveying the above-mentioned object to be sewn (3).