TW202325943A - Sewing machine capable of automatically conveying a to-be-sewn object from the upstream side to the downstream side with respect to a sewing machine - Google Patents

Abstract

The invention provides a sewing machine capable of pressing and sewing a to-be-sewn object even in the vicinity of a machine needle as necessary when a conveying device conveys the to-be-sewn object from the upstream side to the downstream side with respect to the sewing machine. The sewing machine includes: a conveying device, which presses the edge of a to-be-sewn object against the edge of the worktable for conveying; and a guide member, which guides the to-be-sewn object in a way that the to-be-sewn object is close to the upper surface of the worktable. When viewed from above, a space area is formed between the conveying area and the needle drop area from the gripper of the conveying device on the worktable in the direction perpendicular to the conveying direction of the to-be-sewn object. The arrangement area of the guide member satisfies the following conditions when viewed from above: a condition that the arrangement area is located in an area other than the space area, and a condition that the arrangement area at least includes an area on the upstream side in the conveying direction of the to-be-sewn object with respect to the needle drop area. Due to the formation of such a space area, it is possible to bring the conveying area of the gripper close to the needle.

Description

sewing device

The present invention relates to a sewing device, which includes a conveying device for automatically conveying an object to be sewn from an upstream side to a downstream side relative to a sewing machine.

Sewing machines are usually provided with a presser foot. As an example of the presser foot, there is known a presser foot in a form surrounding a pinhole when viewed from above (Patent Document 1). More specifically, the presser foot disclosed in Patent Document 1 has a bifurcated shape when viewed from above. For convenience of description, names are given to each part of the presser foot. Each part of the bifurcated part is called a single leg part, and the part where two single leg parts join is called a joint part. Moreover, in the presser foot, the needle enters and exits the space between the two single leg parts, and is used in the following state: the downstream side of the conveying direction of the to-be-sewn object in the space is closed by the joint, and the space is closed by the joint. The upstream side opening in the conveying direction of the sewn product. In addition, the sewing machine disclosed in Patent Document 1 adopts a manual conveyance method in which an operator conveys a to-be-sewn object by hand. In addition, the sewing machine disclosed in Patent Document 1 is provided with a feed dog under the presser foot, and while the object to be sewn is sandwiched between the feed dog and the presser foot, the feed dog sends the object to be sewn downstream relative to the sewing machine.

In addition, as an example of the sewing device, there is known a sewing device that uses a conveying device (automatic conveying method) that automatically conveys the object to be sewn from the upstream side to the downstream side with respect to the sewing machine in addition to the sewing machine (patent document 2). FIG. 12 of Patent Document 2 discloses a conveying device called a second sewing machine guide. In addition, the sewing device is configured such that the pressing plate of the second sewing machine guide portion presses the sewing object on one side in the width direction of the sewing object, and when the pressing plate is conveyed, the edge of the sewing object passes directly under the needle of the sewing machine. nearby.

prior art literature patent documents Patent Document 1: Japanese Patent Laid-Open No. 62-44292 Patent Document 2: Japanese Patent No. 6423568

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

Here, as a hypothetical sewing device, it is assumed that the sewing machine of Patent Document 2 adopts the presser foot of the manual feeding method disclosed in Patent Document 1, that is, a two-pronged presser foot.

The state of this hypothetical sewing device will be described in a top view. As shown in FIG. As a result, the position where the pressing plate of the conveying device presses the to-be-sewn object 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 by hatching, and the elongated oval pinhole is shown between the two single-leg parts 91 of the bifurcation.

However, when sewing with a sewing machine equipped with a presser foot, there are cases where the sewing quality of the object to be sewn is insufficient. In this case, even if you want to use the conveying device to convey the sewn object while pressing it as close as possible to the machine needle, the single foot portion of the presser foot will also hinder it. In addition, it is known that when the sewing is carried out while pressing it near the needle, compared with the case where the sewing object is pressed and carried at a position far enough away from the needle, the sewing is carried out. The sewing quality of the sewn object is better.

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

The sewing device of the present invention includes: a worktable; a sewing machine main body; a conveying device, which presses the sewing object against the working table and transports it from the upstream side to the downstream side relative to the sewing machine main body; and a guide member, which makes the sewing object Guide the sewing object close to the upper surface of the workbench. Furthermore, the conveying device includes: a clamping part that presses the to-be-sewn object against the workbench; and a conveying part that conveys the clamping part. Moreover, when viewed from above, a space area is formed in the direction perpendicular to the conveying direction of the object to be sewn between the conveying area and the needle drop area of the clamping portion on the workbench, and the arrangement area of the guide member satisfies the following requirements when viewed from above: Conditions: the condition that the arrangement area is located in an area other than the space area, and the condition that the arrangement area includes at least an area on the upstream side in the conveying 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, the sewing device is as follows.

That is, the arrangement area of the guide part satisfies the following conditions in a plan view: the condition that the arrangement area is located around the needle drop area, and the condition that the arrangement area is far from the conveying area of the gripping 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 entry area in the direction perpendicular to the conveying direction of the clamping portion in plan view is set as the first reference area, and the arrangement area of the guide part in plan view satisfies the following conditions: relative to the above-mentioned first reference area In terms of area, it is only the area on the upstream side of the conveying direction of the object to be sewn.

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

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

In addition, the sewing device of the present invention conveys the object to be sewn from the upstream side to the downstream side relative to the sewing machine body while being pressed against the worktable, and for clarity, it does not include other devices, such as from the lower side of the workbench toward the guide side. The device for conveying the sewn object while pressing the sewn object is preferably as follows.

That is, the conveying device is the only device for conveying the sewn object.

In the sewing device of the present invention, the arrangement area of the guide part satisfies various conditions. In particular, a space area is set between the needle drop area and the conveying area of the clamping part, so that the conveying area of the clamping part can be kept away from the guide. The state side of the configuration area of the parts is close to the needle.

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

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

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

The clamping part 41 includes: a clamping part main body 41a which presses the to-be-sewn object 3; and a shock absorbing part 41b which connects the clamping part main body 41a and the top of the robot arm 42a to absorb shock. In addition, although the holding|maintenance part main body 41a consists of several parts in a drawing, it is a single plate in this embodiment.

The impact absorbing portion 41b includes: a fixed arm 41c extending horizontally and the middle portion of its extended length direction is fixed to the top of the mechanical arm 42a; a rod 41d capable of being fixed at both ends of the length direction of the fixed arm 41c. It is guided to move up and down; the compression coil spring 41e penetrates the rod 41d so as to surround the rod 41d; In addition, the limiting member 41f is fixed on the upper end of the rod 41d. Furthermore, the stopper 41f has a diameter larger than that of the rod 41d, and cannot pass through a through hole (not shown) formed in the fixed arm 41c and penetrating in the vertical direction.

The compression coil spring 41e is arranged between the clamping part main body 41a and the fixed arm 41c. When the to-be-sewn object 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 sewn object 3 on the top surface of workbench 1. In this way, the clamping part main body 41a is conveyed from the upstream side to the downstream side with respect to the sewing machine 2 with the to-be-sewn object 3 sandwiched between the table 1, and the to-be-sewn object 3 is conveyed.

As shown in Figure 1, the sewing machine 2 includes: a sewing machine main body 2a, which sews an object to be sewn 3; Bracket 6, which guide member 5 is installed on sewing machine main body 2a; And positioning plate 7, it becomes the mark of the direction of this straight line under the situation that will be sewn 3 edge conveying side along a straight line and sews.

The conveying direction of the object 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 for controlling the driving of the conveying part 42). Moreover, the conveying part 42 of the conveying device 4 of the present embodiment adopts a multi-joint manipulator as described above, and the conveying part 42 can be moved not only in a straight line but in various directions. The conveying direction X is indeterminate. However, the basic method of use of 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 being conveyed in a straight line as described above, so in the present invention, the direction of the straight line is defined as The conveying direction X of the sewn product 3 . In addition, in the present embodiment, "the conveying direction X of the object to be sewn 3" refers to a 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 X of the object to be sewn 3 may also be marked with other than the positioning plate 7, and in the case where no marking is provided, refer to the operation manual of the sewing machine 2.

"Conveyance direction X of the object to be sewn 3" is the direction from right to left in Fig. 4 . Therefore, the "left-right direction" in this embodiment corresponds to the left-right direction in FIG. 4 . In addition, "the upstream side of the conveyance direction X" with respect to an object means the right side with respect to an object in FIG. 4. As shown in FIG. In addition, "the downstream side of the conveyance direction X" with respect to an object means the left side with respect to an object in FIG. 4. As shown in FIG.

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

In addition, "the direction Y perpendicular to the conveying direction X of the object 3 to be sewn" is also referred to as the front-back direction, which is the up-down direction in FIG. 4 . The upper direction in Fig. 4 is the rear direction, and the lower direction in Fig. 4 is the front direction.

As shown in Fig. 1 and Fig. 4, the table 1 includes a needle plate 2t of the sewing machine 2, and a conveyance table 11 which is a part other than the needle plate 2t. In addition, in this embodiment, the table 1 includes a part of the positioning plate 7 of the sewing machine 2 as a part of the table 1 in addition to the needle plate 2t and the conveying table 11 . The top surfaces of the needle plate 2t, the transport table 11, and a part of 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, which has a vertical surface, and can position the end of the object to be sewn 3; and the fixing plate part 73 is connected to the positioning main body part 71 and fixed to the sewing machine main body 2a. In addition, the lower plate part 72 is a part which comprises a part of the table 1. As shown in FIG.

The positioning body part 71 is a vertical plate and extends 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 main body 2 a is connected to the upper end of the positioning main body 71 .

As shown in Figure 4, the fixed plate portion 73 includes: the first fixed plate portion 74, which is a plate bent at right angles when viewed from above, and is fixed to the sewing machine main body 2a; 1. The fixing plate portion 74 extends in a form bent at right angles 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 with respect 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 conveying direction X with respect to the needle plate 2t.

The conveyance table 11 extends in a straight line in the conveyance direction X in a plan view, and extends in the left-right direction within a range on the upstream side and the downstream side with respect to the sewing machine 2 . In addition, a recessed portion 11c is formed on the transport table 11, which 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 is of a known structure, and wraps 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, and forms stitches on the to-be-sewn object 3 placed on the needle plate 2t. . In addition, in this embodiment, the sewing machine main body 2a of the tethered stitch sewing machine cooperates with the conveying device 4 to overlock one side of a rectangular to-be-sewn object.

In addition, as shown in FIG. 2 and FIG. 3 , the sewing machine main body 2a includes: a base portion 21, which is arranged on the lower side with respect to the table 1; a column portion 22, which stands up from the base portion 21; and a sewing machine head 23, which It extends from the upper portion of the pillar portion 22 in a state facing the base portion 21 above.

The sewing machine 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 while being sandwiched between the base portion 21 and the rear portion of the sewing machine head 23 .

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

The sewing head 23 includes a sewing head case 23a forming its outer contour, and an internal mechanism accommodated in the sewing head case 23a. In addition, the internal mechanism is the up and down movement mechanism of the pointer rod or the driving mechanism of the thread take-up lever. Further, the sewing machine head 23 is disposed in a state where the needle bar 23b of the needle bar driving mechanism protrudes downward from the top lower surface of the sewing machine head case 23a. Further, the needle 8 is attached to the lower end of the needle bar 23b in a state extending downward.

The column part 22 includes a column case 22a forming its outer contour, and an internal mechanism accommodated in the column case 22a. The internal mechanism is, for example, a mechanism for interlocking the internal mechanism of the sewing machine head 23 and the internal mechanism of the base portion 21 . Furthermore, the guide 5 is fixed to the surface of the column housing 22a (sewing machine main body 2a ) that is located above the table 1 and faces the upstream side in the conveying direction X of the object 3 through the bracket 6 .

The bracket 6 is composed of several parts. As shown in FIG. 4, the bracket 6 includes: a first bracket 61 fixed to the column portion 22 of the sewing machine main body 2a in a state extending upstream in the conveying direction X in plan view; and a second bracket 62 fixed to the sewing machine body 2a. The top of the first bracket 61 (the end on the upstream side in the conveying direction X) extends directly above the table 1 in a plan view along the direction Y perpendicular to the conveying direction X.

The first bracket 61 is a metal plate bent to open downward. More specifically, as shown in FIG. 2, the first holder 61 includes: two fixing plate parts 61a, 61b arranged in parallel in a state separated in the conveying direction X; The state where the upper ends of the two fixing plate portions 61a, 61b are connected extends along the conveying direction X. As shown in FIG. 4, the 1st holder main-body part 61c is a shape extended at right angles in planar view. Specifically, the first holder main body portion 61c includes: a first plate portion 61d extending along the conveying direction X; extend. Furthermore, the downstream fixed plate portion 61a among the two fixed plate portions 61a, 61b is fixed to the column housing 22a of the sewing machine main body 2a. On the other hand, the fixing plate portion 61b on the upstream side has a dimension longer in the direction Y perpendicular to the conveying direction X than the fixing plate portion 61a on the downstream side, and fixes the second holder 62 .

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

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

As shown in FIG. 3 , the dimension in the left-right direction of the fixed block portion 52 is shorter than that of 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 size of the fixed block portion 52 in the front-rear direction (conveying direction X) is shorter than that of the guide block portion 51, and extends upward from the upstream side of the upper surface of the guide block portion 51 in the conveying direction X. form.

As shown in Figure 2, among the upper surface of the guide block portion 51, the part on the downstream side of the conveying direction X compared with the fixed block portion 52 is step-like recessed (lower) than the part on the upstream side of the conveying direction X. ).

The lower surface of the guide block portion 51 (the lower surface of the guide member 5) includes: a first guide surface 51a, which gradually descends (closer to the workbench 1) toward the conveying direction X of the sewn object 3; 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 is parallel to the upper surface of the table 1.

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

The needle dropping area 1a on the workbench 1 is the area where the machine needle 8 just passes through the workbench 1 in the present invention. Moreover, in the example of FIG. 6, the needle drop area 1a is circular. In addition, in the present embodiment, the needle hole 1h is an elongated long hole including the needle entry region 1a as a part thereof, and is a long hole long 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 entry area 1a, and is sufficient in the left-right direction compared to the needle entry area 1a. long. In addition, the shape of the pinhole 1h when viewed from above is the boundary separating the inside and outside of the area of the pinhole 1h, so the pinhole 1h is the pinhole area 1h when viewed from above. Furthermore, the pinhole area 1h on the table 1, that is, the pinhole area 1h in plan view is larger than the needle entry area 1a.

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

In addition, two areas are set.

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

The second reference area L2 is an area passing through the needle entry area 1a in the conveying direction X. As shown in FIG.

Between the conveyance area 41L of the nip part 41 and the needle entry area 1a, a space area L3 is formed in the direction Y perpendicular to the conveyance direction X of the nip part 41 . The space area L3 is literally an area where no objects exist. The spatial area L3 is a part of the first reference area L1. In addition, in this embodiment, the space area L3 is formed not only between the conveying area 41L of the clamping portion 41 and the needle entry area 1a, but also between the conveying area 41L of the clamping portion 41 and the needle hole area 1h.

Furthermore, the disposition area 5a of the guide 5 in this embodiment is as follows when viewed from above. As shown in FIG. 6, the arrangement area 5a of the guide member 5 has a rectangular shape, and is shown by an area scattered with dots in FIG. Furthermore, the pinhole area 1h is arranged separately from the arrangement area 5a of the guide 5 on the downstream side in the conveying direction X. As shown in FIG. In addition, the entire arrangement area 5a of the guide 5 is arranged on the upstream side in the conveying direction X from the first reference area L1 including the needle entry area 1a as a part thereof. That is, the arrangement area 5 a 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 with the second reference area L2. More specifically, the second reference area L2 is in a form passing through the middle portion in the front-back direction (direction Y perpendicular to the conveying direction X) in the arrangement area 5a of the guide 5 . Furthermore, the arrangement area 5a of the guide member 5 includes: an area overlapping the second reference area L2; an area protruding toward the conveying area 41L side of the nip 41 with respect to the second reference area L2; A region protruding to the side opposite to the conveying region 41L of the gripping portion 41 .

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

If it is not around the needle drop area 1a, then it cannot play the role of the guide member 5 in guiding the sewing object directly below the machine needle 8 during sewing, and poor sewing is likely to occur. In addition, since the clamping portion 41 of the conveying device 4 presses the object to be sewn onto the worktable 1, the clamping portion 41 prevents the object to be sewn 3 from being lifted together with the machine needle 8. In addition, the guide member 5 also plays an auxiliary role in preventing the object to be sewn 3 from being lifted together with the machine needle 8 .

In addition, if the arrangement area 5a of the guide 5 is not separated from the conveying area 41L of the clamping part 41, 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 member 5 to become unstable, so it is not preferable.

In addition, in order to make 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 member 5 is preferably shortened as much as possible compared with the second reference area L2. The amount by which the part 41 protrudes on the conveyance region 41L side, or the end portion of the nip part 41 on the conveyance region 41L side in the arrangement region 5a coincides with the second reference region L2.

In the above-mentioned sewing device of the first embodiment, since the arrangement area 5a of the guide member 5 satisfies various conditions, in particular, a space area is set between the needle hole area 1h including the needle entry area 1a and the conveying area 41L of the clamping portion 41. L3, therefore, the conveying area 41L of the clamping portion 41 can be brought closer to the needle 8 while keeping away from the arrangement area 5a of the guide member 5. In addition, since the sewing device of the first embodiment satisfies the condition that the arrangement area 5a of the guide 5 is located only on the upstream side in the conveying direction X compared with the first reference area L1 or the needle hole area 1h, it is different from other embodiments described later. than can be set to a narrower range.

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

The arrangement area 5b of the guide member 5 is L-shaped in plan view, and is arranged separately from the needle hole area 1h including the needle entry area 1a on the side opposite to the transport area 41L of the clamping portion 41 and upstream in the transport direction X. More specifically, the arrangement area 5b of the guide member 5 includes a first arrangement area A that is separated from the first reference area L1 including the needle entry area 1a as part of itself and the needle hole area 1h on the upstream side in the conveyance direction X. The position extends along the direction Y perpendicular to the conveying direction X of the object to be sewn 3 ; The opposite side of the transport area 41L extends along the transport 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 1h 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 located between the upstream side of the conveying direction X and the first arrangement area A. The first reference area L1 including the needle entry area 1a as a part thereof and the needle hole area 1h are arranged separately. Moreover, the arrangement|positioning area 5b of the guide 5 is formed in the area|region other than the space area|region L3 similarly to the arrangement|positioning area 5a of 1st Embodiment. In addition, the arrangement area 5b of the guide 5 satisfies the conditions of being located around the needle entry area 1a and the condition of being away from the conveying area 41L of the clamping portion 41 in plan view.

In addition, in the lower surface of the guide 5 of the second embodiment, the portion where the first arrangement area A is formed is the same as that of the lower surface of the guide 5 of the first embodiment. That is, the upstream side of the conveying direction X in the first arrangement area A of the lower surface is the first guide surface 51a (the surface approaching the table 1 as it gradually descends toward the conveying direction X). The downstream part of the transport 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 lower surface of the guide member 5 of the second embodiment that forms the second arrangement area B, the upstream end in the conveyance direction X is used as the first guide surface 51a, and the other parts are used as the second guide surface 51b. . The first guide surface 51a in the portion forming the second arrangement area B is connected to the first guide surface 51a in the portion forming the first arrangement area A in the direction Y perpendicular to the conveying direction X.

In addition, in the second embodiment, the part of the lower surface of the guide member on the upstream side of the needle drop area 1a in the conveying direction X mainly functions as the guide member 5 to guide the sewing object to be directly under the needle 8 during sewing. The other parts only play the role of preventing the object to be sewn 3 from being lifted together with the machine needle 8.

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 member 5 is U-shaped in plan view, and apart from the above-mentioned first arrangement area A and second arrangement area B, it is separated from the first reference area L1 and the pinhole area 1h on the downstream side in the conveying direction X. The position has a third arrangement area C extending in the direction Y perpendicular to the transport direction X from the downstream side of the second arrangement area B toward the transport area 41L of the nip 41 .

The third arrangement area C is arranged to face the first arrangement area A centering on the pinhole area 1h. In addition, the third arrangement area C is also separated from the transport area 41L of the nip 41 in the direction Y perpendicular to the transport direction X. As shown in FIG.

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 conveying direction X and The first reference area L1 including the needle entry area 1a as a part thereof and the needle hole area 1h are arranged separately. 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 5c of the guide 5 satisfies the conditions of being located around the needle entry area 1a and the condition of being away from the conveying area 41L of the clamping portion 41 in plan view.

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

In addition, in the third embodiment, the part of the lower surface of the guide member 5 on the upstream side of the conveying direction X relative to the needle drop area 1a mainly functions as the guide member 5 to guide the sewing object to be directly under the needle 8 during sewing. However, other parts only play the role of preventing the object to be sewn 3 from being lifted together with the machine needle 8.

As shown in Fig. 9, in the sewing device of the fourth embodiment of the present invention, the details of the table 1, the sewing machine 2 and the conveying device 4 are different from those of the sewing device of the first embodiment. However, the portion of the sewing device of the fourth embodiment related to 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 conveying workbench 12 . In this case, the portion corresponding to the needle plate in the conveyance table 12 is formed with needle holes 1h.

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 portion of the object 3 to be sewn can be sewn closer to the column portion 22 side of the sewing machine main body 2a.

In addition, in the fourth embodiment, the sewing machine main body 2a is a lockstitch sewing machine, and cooperates with the conveying device 4 to form eyelet-like straight stitches on the object 3 to be sewn.

In the conveyance device 4, the nip part 41 corresponds to the size of the to-be-sewn object 3, and the nip part main body 41a is formed longer in the conveyance direction compared with 1st Embodiment. In addition, the clamping part main body 41a may consist of only a board when the object to be sewn 3 is a single piece of fabric, but it is preferable to use a material that can penetrate the upper and lower fabrics when the object to be sewn 3 is two overlapped upper and lower fabrics. The structure of the sewing machine needle and the plate with the sewing machine needle protruding from the lower surface.

This invention is not limited to the said embodiment, It can change suitably in the range which does not deviate from the summary. For example, the pinhole 1h is in the shape of an elongated long hole in this embodiment, but the present invention is not limited thereto, and may be another shape represented by a round hole. In addition, the conveying device 4 uses a multi-axis multi-joint manipulator as the conveying part 42 in this embodiment, but the present invention is not limited thereto, and may be a device that only conveys the clamped part along a straight line. In this case, the conveying direction of the clamping portion coincides with the conveying direction X of the object 3 to be sewn.

1: Workbench 1a: Needle drop area 1h: pinhole/pinhole area 2:Sewing machine 2a: Sewing machine body 2t: Needle plate 3: The object to be sewn 4: Conveying device 5: guide 5a: Configure the area 5b: Configure the area 5c: Configure the area 6: Bracket 7: Positioning plate 8: Needle 9: Presser foot 11: Conveyor table 11c: concave part 12: Conveyor table 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: main body of clamping part 41b: Shock absorbing part 41c: fixed arm 41d: Rod 41e: Compression coil spring 41f: limit piece 41L: Conveying area of clamping part 42:Transportation department 42a: Mechanical arm 51: Boot block department 51a: The first guide surface 51b: The second guide surface 52: Fixed block part 61: 1st bracket 61a: Fixed plate part 61b: Fixed plate part 61c: The main part of the first bracket 61d: 1st board part 61e: 2nd board part 62: The second bracket 62a: The second bracket main body 62b: Fixed plate part 71: Locate the main body 72: Lower board part 73: Fixed plate part 74: The first fixed plate part 75: The second fixed plate part 91: single leg A: The first configuration area B: The second configuration area C: 3rd configuration area L1: 1st reference area L2: The second reference area L3: space area X: conveying direction Y: Orthogonal direction

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

1: Workbench

1a: Needle drop area

1h: pinhole, pinhole area

2:Sewing machine

2a: Sewing machine body

2t: Needle plate

3: The object to be sewn

4: Conveying device

5: guide

6: Bracket

7: Positioning plate

8: Needle

11: Conveyor table

11c: concave part

22: column part

23:Sewing machine head

23b: needle bar

41: clamping part

61: 1st bracket

62: The second bracket

71: Locate the main body

72: Lower board part

73: Fixed plate part

X: conveying direction

Y: Orthogonal direction

Claims (6)

A sewing device is characterized in that it comprises: Workbench (1); Sewing machine main body (2a); a conveying device (4), which conveys the object to be sewn (3) from the upstream side to the downstream side relative to the sewing machine main body (2a) while being pressed against the above-mentioned workbench (1); and a guide (5), which guides the above-mentioned object to be sewn (3) so that the object to be sewn (3) approaches the upper surface of the workbench (1), The above-mentioned conveying device (4) includes: a clamping part (41), which presses the above-mentioned sewing object (3) to the above-mentioned workbench (1); and a conveying part (42), which presses the above-mentioned clamping part (41) to deliver, Between the conveying area (41L) and the needle drop area (1a) of the clamping part (41) on the above-mentioned workbench (1) when viewed from above, it is perpendicular to the conveying direction (X) of the above-mentioned object to be sewn (3) A space area (L3) is formed in the direction (Y), The arrangement area (5a, 5b, 5c) of the above-mentioned guide member (5) satisfies the following conditions in plan view: the condition that the above-mentioned arrangement area (5a, 5b, 5c) is located in an area other than the above-mentioned space area (L3), and the above-mentioned arrangement area (5a, 5b, 5c) include at least the condition of the region on the upstream side of the conveyance direction (X) of the sewing object (3) with respect to the needle entry region (1a). Such as the sewing device of claim 1, wherein The above-mentioned arrangement area (5a, 5b, 5c) of the above-mentioned guide member (5) satisfies 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 drop area (1a), and the above-mentioned arrangement The areas (5a, 5b, 5c) are far from the condition of the conveying area (41L) of the above-mentioned clamping part (41). Such as the sewing device of claim 2, wherein A region passing through the needle entry region (1a) in a direction (Y) perpendicular to the conveying direction (X) of the gripping portion (41) in plan view is set as a first reference region (L1), The above-mentioned arrangement area (5a) of the above-mentioned guide member (5) satisfies the following condition in plan view: relative to the above-mentioned first reference area (L1), it is only upstream of the above-mentioned conveying direction (X) of the above-mentioned object to be sewn (3) side area. The sewing device according to any one of claims 1 to 3, wherein The guide (5) is fixed on the upstream side of the sewing machine body (2a) toward the conveying direction (X) of the sewing object (3) via a bracket (6). The sewing device according to any one of claims 1 to 3, wherein The above-mentioned conveying device (4) is the only device for conveying the above-mentioned to-be-sewn object (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 to-be-sewn object (3).