JP2017176755A - Automatic opening part hemming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic opening part hemming device which, when hemming a small fabric, ensures workability and compactness equivalent to those of the conventional device having only a fabric conveyance base fixed to a table, but is also adaptable to the hemming of a fabric having a large body.SOLUTION: Below a top plate 3a of a table 3 mounted with a sewing machine 1 and a fixed fabric conveyance base 2, a movable fabric conveyance unit 6 is accommodated. A slide plate 7 of the movable fabric conveyance unit 6 is guided by rightward and leftward guides 5 and 5 fixed to a fixed plate 4 of the table 3 so as to be slidable rightward and rightward. A movable fabric conveyance base 12 is supported on a bracket 14. The bracket 14 is guided by an upward and downward guide 11 so as to be ascendable and descendable. In the sewing of a fabric having a large body, when a switch not illustrated is turned on, the slide plate 7 slides leftward first, so that the movable fabric conveyance unit 6 slides leftward. Then, the bracket 14 ascends, so that the movable fabric conveyance base 12 ascends. The upper surface of the movable fabric conveyance base 12 is held so as to be flush with the upper surface of the fixed fabric conveyance base 2.SELECTED DRAWING: Figure 4

Description

The present invention relates to an automatic face stitching device.
In the present invention, front and rear refer to the front and rear direction in the cloth feeding direction of the sewing machine, and left and right refer to the left and right direction when the sewing machine is viewed from the front. The up and down direction means the up and down direction of the sewing machine.

  2. Description of the Related Art Conventionally, as this type of automatic stitching device, one that conveys a fabric by a belt conveyor is known (for example, see Patent Document 1). In the automatic down stitching device of Patent Document 1, belt conveyors are arranged on the left side and the front side of the needle drop of the sewing machine. A cloth folding device for folding the edge of the fabric into a J shape is disposed in front of the needle drop of the sewing machine, and a cloth cutting device is disposed in front of the fabric folding device. When the fabric is set on the belt conveyor on the front side of the needle drop and the apparatus is started, the fabric is fed to the needle drop side along the feed direction of the sewing machine. The right edge of the fabric is trimmed and aligned by a cloth cutting device, and then folded back into a J shape by a fabric folding device, and further fed into the needle drop of the sewing machine, where the stitching is performed. A series of operations after the dough is set is automatically performed without any manual operation by the operator.

  In the above-described automatic stitching apparatus, the fabric conveying unit by the belt conveyor is very large and takes up space, and is expensive. Therefore, as a device for automatically carrying out the stitching of small fabrics such as cuffs of short-sleeved shirts, automatic dressing with a relatively small fixed fabric carrier (see reference numeral 2 in FIG. 1) that does not have a fabric feed by a belt. An apparatus (hereinafter referred to as a conventional apparatus) has also been proposed. Since the fixed cloth conveyance table of the conventional apparatus is compact, the conventional apparatus does not take a place of installation as compared with the automatic face stitching apparatus of Patent Document 1. In addition, the operator can work while standing in the vicinity of the place where the cloth is set, that is, before the needle drop of the sewing machine.

Japanese Utility Model Publication No. 5-85376 (Figs. 1 and 6-12)

  In the above-mentioned conventional apparatus, when performing a large-scale cloth face down sewing such as a cuff of a long-sleeved shirt or the front and back body of a shirt, the body part is heavier than a small cloth such as a cuff of a short-sleeved shirt. Since it is fed only by the feed dog, there is a risk that the quality of the sewing may be deteriorated because the fabric is not fed well.

  Therefore, an object of the present invention is to provide an automatic down stitching device that can cope with down stitching of a large body fabric while ensuring workability and compactness equivalent to those of a conventional device when performing over stitching of a small fabric. Is to provide.

  In order to achieve the above object, the invention described in claim 1 includes a sewing machine, a table that includes a top plate and on which the sewing machine is mounted, and a fixing that is arranged and fixed on the front side of the sewing machine on the top plate. In an automatic dressing sewing device that has a fabric conveying table, and automatically sends the fabric set at a predetermined position on the fixed fabric conveying table in the fabric feeding direction and performs stitching on the fabric edge, with respect to the fabric feeding direction. A movable dough conveying unit arranged to be slidable on the left and right is provided below the top plate of the table, and the movable dough conveying unit has a movable dough conveying table which can be moved up and down and feeds the dough in the cloth feeding direction by belt driving. When the movable dough carrying table is raised, its upper surface is held at a higher position than the table top, and when the movable dough carrying table is lowered, the movable dough carrying unit can be stored below the table top plate. And wherein the are.

  According to a second aspect of the present invention, in the automatic down stitch sewing device according to the first aspect, at least the movable fabric conveyance table is mechanically moved up and down among the left and right slides of the movable fabric conveyance unit and the elevation of the movable fabric conveyance table. It is characterized by being driven. According to a third aspect of the present invention, in the automatic down stitching device according to the first or second aspect, the left and right slides of the movable fabric conveying unit are guided by a guide fixed to the table.

  According to the first aspect of the present invention, when a large body material is sewn face-down, the movable material conveyance table of the movable material conveyance unit is pulled out from the table, and the body part is loaded on the movable material conveyance table and conveyed by belt drive. . Thereby, cloth can be conveyed appropriately. When a small fabric is sewn face down, the movable fabric conveyance unit is accommodated below the table top plate, so that the same workability and compactness as the above-described conventional apparatus can be secured.

  According to invention of Claim 2, an operator's labor is not required for the raising / lowering of a movable fabric conveyance stand. According to the invention of claim 3, the belt feeding direction of the fabric by the movable fabric conveying table and the fabric feeding direction of the sewing machine can be matched with no need for adjustment.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic perspective view of the automatic face stitching apparatus of this invention which shows the state by which the movable fabric conveyance unit which concerns on this invention was accommodated under the top plate of the table. BRIEF DESCRIPTION OF THE DRAWINGS The schematic perspective view of the automatic face stitching apparatus of this invention which shows the state which pulled out the movable fabric conveyance unit which concerns on this invention to the left. The schematic perspective view which shows the state which raised the movable fabric conveyance stand further from the state of FIG. The fragmentary sectional view which looked at the state of FIG. 1 from the front. The fragmentary sectional view which looked at the state of FIG. 2 from the front. The fragmentary sectional view which looked at the state of FIG. 3 from the front.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 3 are schematic perspective views of the automatic face-to-face stitching apparatus of the present invention, showing each state of the movable fabric conveyance unit which is the main part of the present invention. 4 to 6 are partial cross-sectional views of the state of FIGS. 1 to 3 as viewed from the front. This movable fabric conveyance unit is composed of a pair of front and rear members excluding a movable fabric conveyance table described later, and FIGS. 4 to 6 show the rear member of the pair of front and rear members as viewed from the front. It has become.

  The table 3 includes a top plate 3a, pedestals 3b, and a gantry 3c. Two leg posts 3b, 3b stand on the pair of front and rear mounts 3c, 3c extending horizontally, and a top plate 3a is stretched on the upper ends of the leg posts 3b, 3b. The sewing machine 1 is mounted on the upper surface of the rear part of the top plate 3a. A needle plate 1a is provided on the upper surface of the bed 1b of the sewing machine 1, and a needle drop (not shown) is provided on the needle plate 1a. A known feed dog that feeds the fabric in the fabric feed direction F is provided below the needle plate 1a.

A fixed dough conveying table 2 is fixed on the top surface of the top plate 3a of the table 3 on the front side of the sewing machine 1. The fixed dough carrying table 2 is arranged so that the upper surface thereof is flush with the upper surface of the needle plate 1a of the sewing machine 1, and the rear end is connected to the needle plate 1a. When the starting means (not shown) is applied after the cloth is set at a predetermined position on the fixed cloth conveying table 2, the cloth is fed in the cloth feeding direction F and the stitches are stitched to the right edge of the cloth as in the above-described conventional apparatus. It is set to automatically perform a series of operations.
A pair of front and rear fixing plates 4, 4 are fixed inside the pair of front and rear leg posts 3 b, 3 b of the table 3. On the inner surface of the fixed plate 4, two horizontal guides 5 and 5 are arranged and fixed horizontally.

Next, the movable fabric conveyance unit 6 will be described. The movable dough conveying unit 6 includes a pair of front and rear slide plates 7. The slide plates 7 and 7 are arranged in a direction orthogonal to the fabric feed direction F. On the outer surface of the slide plate 7, two horizontal upper and lower engaging portions 8 and 8 extending horizontally are arranged and fixed. The pair of front and rear slide plates 7 and 7 are arranged so as to face the pair of front and rear fixed plates 4 and 4 from the inside. The left and right engaging portions 8 and 8 of the slide plate 7 engage with the left and right guides 5 and 5 of the fixed plate 4, and the slide plate 7 is supported by the left and right guides 5 and 5 of the fixed plate 4 so as to be slidable left and right. Has been.
Since most of the members constituting the movable dough conveying unit 6 are composed of a pair of front and rear members, the following description will be made based on FIGS. The member arrange | positioned in is demonstrated.
Left and right air cylinders 9 are disposed and fixed on the inner surface of the slide plate 7. The left and right air cylinders 9 are positioned between the two upper and lower left and right engaging portions 8 and 8, and are arranged so that the stroke direction of the rod 9a is the horizontal direction. Further, the tip of the rod 9a is connected and fixed to the left surface of a square right / left stopper 20 fixed to the inside of the pedestal 3b.

A vertical guide 11 extending in the vertical direction is fixed to the left end of the slide plate 7. A bracket 14 is disposed on the left side of the vertical guide 11. A pair of upper and lower engaging portions 16 and 16 are attached to the right end of the bracket 14. The vertical engaging portions 16 and 16 are engaged with the vertical guide 11 so as to be vertically slidable, and the bracket 14 is connected to the vertical guide 11 so as to be vertically slidable.
A vertical air cylinder 15 is fixed to the inner surface of the bracket 14. The rod 15a of the vertical air cylinder 15 projects downward from the lower part of the vertical air cylinder 15, and the stroke direction of the rod 15a is the vertical direction. The base of the up / down stopper 10 is fixed inside the slide plate 7 and at the lower left, and the end of the up / down stopper 10 extends to the left. The tip of the rod 15a is connected and fixed to the upper surface of the end of the vertical stopper 10.
The left and right air cylinders 9 and the upper and lower air cylinders 15 are connected to a solenoid valve (not shown), the solenoid valve is connected to a control unit (not shown), and the control unit is connected to a compressor and a switch (not shown).

A movable dough carrying table 12 is stretched on the upper ends of the pair of front and rear brackets 14, 14. An endless belt 13 is wound along the longitudinal direction (front-rear direction) of the movable dough conveying table. A belt motor 17, a control unit 18, and a roller box 19 are attached below the movable fabric carrying table 12. The belt motor 17 is for rotating and driving a roller (not shown) built in the roller box 19, and the roller is installed such that its outer periphery is pressed against the lower outer periphery of the endless belt 13. When the belt motor 17 is driven to rotate the roller, the endless belt 13 is driven toward the fabric feed direction F on its upper surface.
The control unit 18 is for controlling the driving of the belt motor 17. In this embodiment, the control unit 18 is set to drive the belt motor 17 in synchronization with the driving of the sewing machine 1. The controller 18 can adjust the rotational speed of the belt motor 17, that is, the driving speed of the endless belt 13.

  In the automatic down stitch sewing apparatus of the present embodiment configured as described above, the movable fabric conveying unit 6 is guided to the left and right guides 5 and 5 by the operation of the left and right air cylinders 9 and slides to the left and right to convey the movable fabric. The table 12 is raised and lowered by being guided by the vertical guide 11 by the operation of the vertical air cylinder 15.

When sewing a small fabric such as a cuff of a short-sleeved shirt, the fabric is loaded only on the fixed fabric carrier 2 as in the conventional device described above. At this time, as shown in FIGS. 1 and 4, the movable dough carrying table 12 is lowered to a position where the upper surface is lower than the top plate 3 a of the table 3, and the movable dough carrying unit 6 is slid to the right side. It has become. That is, the movable fabric conveyance unit 6 including the movable fabric conveyance table 12 is accommodated below the top plate 3 a of the table 3.
If the movable dough conveying unit 6 is housed under the top plate 3a of the table 3 in this way, the same compactness as that of the conventional apparatus described above can be secured and the bulk is not bulky. There is an advantage that you can work as close as possible.

When sewing a large body fabric such as the cuffs of a long-sleeved shirt, the work is performed by loading the fabric on the movable fabric transport table 12 in addition to the fixed fabric transport table 2. When the aforementioned switch is turned on from the state shown in FIGS. 1 and 4, the left and right air cylinders 9 are first operated to extend the rod 9a, and the slide plate 7 to which the left and right air cylinders 9 are fixed slides to the left. By doing so, the movable dough conveying unit 6 slides to the left (FIGS. 2 and 5). The movable fabric conveyance unit 6 is slid to a position where the right end of the movable fabric conveyance table 12 does not overlap the left end of the top plate 3 a of the table 3.
Next, the up-and-down air cylinder 15 operates to extend the rod 15a, and the bracket 14 to which the up-and-down air cylinder 15 is fixed rises, so that the movable dough conveying table 12 rises (FIGS. 3 and 6). The movable dough carrying table 12 is held at a height such that the upper surface thereof is flush with the upper surface of the fixed dough carrying table 2.
When the body of the fabric is loaded on the endless belt 13 of the movable fabric carrying table 12, the right edge is set at a predetermined position on the fixed fabric carrying table 2, and the apparatus is started, a series of the above-mentioned series of stitching processes are performed. Done automatically. At this time, since the endless belt 13 of the movable cloth carrier 12 conveys the cloth body in the cloth feeding direction F in synchronization with the driving of the sewing machine 1, the cloth is smoothly fed even if the cloth is relatively large. Good sewing can be done.

  When the aforementioned switch is turned OFF in the state shown in FIGS. 3 and 6, first, the rod 15a of the upper and lower air cylinders 15 is retracted, and the bracket 14 and the movable dough conveying table 12 are lowered (FIGS. 2 and 5). Next, the rod 9a of the left / right air cylinder 9 is retracted and the slide plate 7 slides to the right, whereby the movable dough conveying unit 6 slides to the right (FIGS. 1 and 4). That is, the movable dough conveying unit 6 is housed below the top 3 a of the table 3.

In the present embodiment, the left and right slides of the movable dough conveying unit 6 and the up and down of the movable dough conveying table 12 are performed by the air cylinder. However, the present invention is not limited to this, and may be performed by other mechanical means such as a motor. It can be done manually or manually. However, since the movable dough carrying table 12 is attached with a belt motor 17 and the like and is very heavy, it is preferable that at least the movable dough carrying table 12 is raised and lowered by mechanical means.
Further, the left and right slide of the movable dough conveying unit 6 is performed by being guided by the left and right guides 5 of the fixed plate 4, but the present invention is not limited to this, and a caster is attached to the lower portion of the slide plate 7, for example. You may slide left and right. However, in this case, it takes time and effort to make the driving direction on the upper side of the endless belt 13 of the movable cloth carrier 12 parallel to the cloth feeding direction F of the sewing machine 1. Therefore, it is preferable that the movable dough conveying unit 6 is guided to slide left and right by the left and right guides 5 fixed to the table 3 as in the present embodiment.

DESCRIPTION OF SYMBOLS 1 Sewing machine 2 Fixed fabric conveyance stand 3 Table 3a Top plate 4 Fixed plate 5 Left / right guide 6 Movable fabric conveyance unit 7 Slide plate 8 Left / right engagement part 9 Left / right air cylinder 11 Up / down guide 12 Movable fabric conveyance stand 13 Endless belt 14 Bracket 15 Vertical Air Cylinder 16 Vertical Engaging Portion F Material Feeding Direction

Claims (3)

  The sewing machine includes a sewing machine, a table provided with the top plate, on which the sewing machine is mounted, and a fixed fabric conveyance table arranged and fixed on the front side of the sewing machine on the top plate, and set at a predetermined position of the fixed fabric conveyance table. In an automatic face stitching device that automatically feeds the cloth in the cloth feeding direction and performs the stitching on the edge of the cloth, the movable cloth conveying unit arranged so as to be slidable in the left and right directions with respect to the cloth feeding direction includes a top of the table. The movable dough conveying unit is provided below the plate, and the movable dough conveying unit is movable up and down, and is provided with a movable dough conveying table that feeds the dough in the direction of feeding by belt driving. An automatic stitching apparatus characterized by being held at a higher position so that the movable fabric conveying unit can be accommodated below the top plate of the table when the movable fabric conveying table is lowered.   2. The automatic mouth according to claim 1, wherein at least moving of the movable dough conveying table is mechanically driven among right and left slides of the movable dough conveying unit and raising and lowering of the movable dough conveying table. Tie down device.   3. The automatic stitching apparatus according to claim 1, wherein left and right slides of the movable fabric transport unit are guided by a guide fixed to the table. 4.

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