CN111936686A - Sewing device, work holding jig, and sewing method - Google Patents
Sewing device, work holding jig, and sewing method Download PDFInfo
- Publication number
- CN111936686A CN111936686A CN201980023703.7A CN201980023703A CN111936686A CN 111936686 A CN111936686 A CN 111936686A CN 201980023703 A CN201980023703 A CN 201980023703A CN 111936686 A CN111936686 A CN 111936686A
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- sewing
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- sewn
- seating
- holding jig
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B31/00—Workpiece holders or hold-downs in machines for sewing leather
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B39/00—Workpiece carriers
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2207/00—Use of special elements
- D05D2207/02—Pneumatic or hydraulic devices
- D05D2207/04—Suction or blowing devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
A sewing device (10) is used for clamping a workpiece (58) to be sewn by using a sewing table (46) and a presser foot mechanism (48) and enabling a sewing machine needle (49) to penetrate for sewing, the workpiece (58) to be sewn is seated on a workpiece holding clamp (12) with a seat part (20) to be sewn, so that the workpiece (58) to be sewn is sewn in a state of being formed into a specified shape, wherein a plurality of seat parts (20) are arranged along a sewing thread of the workpiece (58) to be sewn.
Description
Technical Field
The present invention relates to a sewing device, a work holding jig, and a sewing method for sewing a surface material.
Background
In order to create a high-grade feeling in the vehicle interior, a skin material cut or formed in accordance with the shape of an interior base material such as an instrument panel is sometimes sewn (provided with stitches) with a stitch pattern (stitch pattern). In the related art, an operator uses a fixed sewing machine to perform sewing. In a sewing machine, a workpiece to be sewn is arranged on a sewing machine table, and sewing is performed by causing a sewing machine needle having a thread inserted therein to penetrate into the workpiece to be sewn and to be separated therefrom.
In such sewing, in order to prevent the shape from being distorted, the workpiece to be sewn is fixed by a jig having a predetermined shape and is sewn in some cases. For example, japanese patent laid-open publication No. 2017-71382 relates to a method for forming a stitch pattern only with an upper thread, and describes a technique for supporting a workpiece to be sewn with a supporting jig. In addition, the following techniques are described in japanese patent laid-open publication No. 2017-197163 and japanese patent publication No. 6151117: the workpiece to be sewn is sandwiched between the presser foot mechanism and the support jig, and is sewn while being pressed.
Disclosure of Invention
However, the conventional sewing device sews a relatively flat portion of a workpiece to be sewn, and it is difficult to provide a support jig for a narrow portion curved with a small radius of curvature, such as a portion curved at an acute angle. Therefore, there is a problem that a workpiece to be sewn shaped to have a curved portion cannot be sewn with high accuracy.
Therefore, a sewing device, a work holding jig, and a sewing method capable of sewing a shaped workpiece with high accuracy are desired.
A sewing device according to an aspect of the present invention is a sewing device for sewing a workpiece to be sewn along a predetermined sewing line in a state where the workpiece to be sewn is formed into a predetermined shape, the sewing device including a sewing mechanism, a drive mechanism, and a workpiece holding jig, wherein the sewing mechanism includes: a sewing machine needle which pierces or separates a workpiece to be sewn by reciprocating movement; a sewing table facing the sewing machine needle with the workpiece to be sewn therebetween; and a presser foot mechanism that presses a workpiece to be sewn against the sewing table from a needle side of the sewing machine, wherein the drive mechanism moves the sewing mechanism, the workpiece holding jig holds the workpiece to be sewn, and the workpiece holding jig has a plurality of seating portions arranged in a moving direction of the sewing mechanism, and forms and holds the workpiece to be sewn into a predetermined shape by seating the workpiece to be sewn on a seating surface of a predetermined shape, and a retraction mechanism that retracts at least one of the seating portions from the workpiece to be sewn in accordance with a position of the sewing mechanism so as to avoid interference between the sewing mechanism and the seating portion.
According to the sewing device described above, the workpiece to be sewn is held by the workpiece holding jig having the seating portion for holding the workpiece to be sewn by seating the workpiece to be sewn on the seating surface having the predetermined shape to set the workpiece. Accordingly, the shaped workpiece to be sewn can be reliably held, and even if the workpiece is a portion bent at an acute angle, for example, sewing can be performed by the sewing mechanism without causing positional deviation. Further, by providing the retreat mechanism for retreating the seating part of the portion interfering with the sewing mechanism, the sewing mechanism can be moved along the sewing thread without interfering with the seating part.
In the above-described sewing device, the following structure may be adopted: in a retreat area where both surfaces of the workpiece to be sewn are floated by the retreat of the seat part, the sewing mechanism clamps the workpiece to be sewn and arranges the workpiece to be sewn into a flat surface for sewing.
According to the above configuration, the workpiece to be sewn is held by the workpiece holding jig having the seat portion for holding the workpiece to be sewn by seating the workpiece to be sewn on the seating surface having the predetermined shape to set the surface, and sewing is performed by sandwiching a part of the seat portion retracted by the sewing mechanism. Accordingly, the shape of the adjacent part is maintained, and the local part between the presser foot part and the sewing table of the sewing device is flattened, so that the optimal posture of the workpiece to be sewn is obtained. As a result, for example, even a portion bent at an acute angle can be sewn with high accuracy without being affected by the shape.
In the above-described sewing device, the following structure may be adopted: the sewing machine has a plurality of suction holes provided in a seating surface of the seating portion, and the sewing mechanism sucks and holds the workpiece to be sewn to the suction holes.
According to the above configuration, the workpiece can be seated on the seating surface of the seating portion by sucking the sewn workpiece. Further, by stopping the suction, the workpiece to be sewn can be released, and thus the retreat operation can be performed quickly.
In the above-described sewing device, the following structure may be adopted: the sewing machine further comprises a 2 nd workpiece holding jig, which is provided at a position not interfering with the moving direction of the sewing mechanism, for supporting the workpiece to be sewn.
According to the above configuration, the workpiece to be sewn can be held more reliably, and thus sewing can be performed with high accuracy.
In the above-described sewing device, the following structure may be adopted: the retraction mechanism is constituted by an air cylinder or a cam mechanism.
According to the above configuration, the retracting mechanism can be configured with a simple device configuration, and thus the device configuration of the sewing device can be simplified.
In addition, a work holding jig according to another aspect of the present invention is a work holding jig used for a sewing apparatus having a sewing mechanism and a drive mechanism, wherein the sewing mechanism includes: a sewing machine needle which pierces or separates a workpiece to be sewn by reciprocating movement; a sewing table facing the sewing machine needle with the workpiece to be sewn therebetween; and a presser foot mechanism that presses a workpiece to be sewn against the sewing table from the sewing machine needle side, wherein the drive mechanism moves the sewing mechanism, and the workpiece holding jig includes a plurality of seat portions arranged in a moving direction of the sewing mechanism, and holds the workpiece to be sewn by forming the workpiece to be sewn into a predetermined shape by seating the workpiece on a seating surface having a predetermined shape, and a retreat mechanism that retreats at least one of the seat portions from the workpiece to be sewn in accordance with a position of the sewing mechanism so as to avoid interference between the sewing mechanism and the seating portion.
In addition, a sewing method according to another aspect of the present invention is a sewing method for sewing a workpiece to be sewn along a predetermined sewing line in a state where the workpiece to be sewn is formed into a predetermined shape using a sewing mechanism, the sewing mechanism including: a sewing machine needle which pierces or separates a workpiece to be sewn by reciprocating movement; a sewing table facing the sewing machine needle with the workpiece to be sewn therebetween; and a presser foot mechanism for pressing a workpiece to be sewn against the sewing table from a needle side of the sewing machine, the sewing method comprising: forming the workpiece to be sewn into a predetermined shape by seating the workpiece to be sewn on a seating part in which a plurality of seating parts are arranged along a sewing thread of the workpiece to be sewn; forming a retreat region for making both surfaces of the workpiece float by retreating a part of the seat part; and a step of sewing the workpiece by clamping two surfaces of the workpiece by a sewing mechanism in the retreat region of the workpiece.
According to the sewing device, the workpiece holding jig and the sewing method, the workpiece to be sewn can be sewn with high precision.
Drawings
Fig. 1 is a schematic configuration diagram of a sewing apparatus according to embodiment 1 of the present invention.
Fig. 2 is a side view of the work holding jig of fig. 1.
Fig. 3A is a front view of the 1 st seating portion of the workpiece holding jig of fig. 1 immediately before retraction, and fig. 3B is a front view showing a state after the 1 st seating portion is retracted.
Fig. 4 is a front view of the work holding jig in a state in which the 2 nd seating part is retracted.
Fig. 5 is an enlarged perspective view of a sewing portion of the sewing device of fig. 1.
Fig. 6 is an enlarged perspective view showing the arrangement of a workpiece to be sewn and a seating portion thereof according to embodiment 2 of the present invention.
Fig. 7A is a sectional view showing a section taken along line VIIA-VIIA of fig. 6 together with a partially enlarged view thereof, and fig. 7B is a sectional view taken along line VIIB-VIIB of fig. 6.
Fig. 8A to 8C are schematic diagrams illustrating the retraction mechanism according to embodiment 3 and illustrating the operation thereof.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, "up", "down", "left" and "right" correspond to the upper, lower, left and right directions in the drawings, respectively, but these directions are shown for easy understanding and are not intended to define the directions in which the sewing apparatus, the work holding jig, and the sewing method are actually used.
(embodiment 1)
As shown in fig. 1, a sewing apparatus 10 according to the present embodiment includes a workpiece holding jig 12, a sewing mechanism 14, and a conveying robot 16 as a driving mechanism for conveying the sewing mechanism 14. The sewing mechanism 14 is attached to a tip end arm 18 of the transfer robot 16.
As shown in fig. 2, the work holding jig 12 has a seating portion 20, a guide pin 22, a cylinder 24, a vacuum generator 40, and a frame 26. The seating portion 20 has a seating surface 20a formed at an upper portion thereof. The seating surface 20a is formed in the same shape as the workpiece 58 to be sewn in order to maintain the shape of the workpiece 58 to be sewn (see fig. 3A). In the illustrated example, the seating surface 20a has a portion that is curved at an acute angle at its uppermost portion. A plurality of suction holes 30 are formed in the seating surface 20 a. These suction holes 30 communicate with a negative pressure flow passage 32 inside the seat portion 20, and the negative pressure flow passage 32 communicates with an air hose 36a connected to the lower end portion of the seat portion 20. The seating portion 20 is supported by a guide pin 22 via a support member 22 a.
The guide pin 22 is attached to the frame 26 through a guide bush 42. The lower end of the guide pin 22 is connected to a piston rod 24a of the cylinder 24. The guide pin 22 is configured to be movable in the vertical direction integrally with the piston rod 24a while being guided by the guide bush 42.
The lower end of the air cylinder 24 is fixed to a base portion 28 of the housing 26, the upper end of the air cylinder 24 (the end on the piston rod 24a side) is disposed upward, and the piston rod 24a is movable in the vertical direction in the drawing. An air hose 44a and an air hose 44b are connected to the air cylinder 24, and the air cylinder 24 is operated by supplying compressed air from an external air supply device (not shown).
The cylinder 24 and the guide pin 22 constitute a retraction mechanism of the seating portion 20, and the seating portion 20 can be retracted in the vertical direction. The retreat direction of the seating portion 20 is not limited to the vertical direction, and may be a movement in the horizontal direction or a movement accompanied by a three-dimensional displacement.
The vacuum generator 40 is mounted on the frame 26. The compressed air is supplied to the vacuum generator 40 via the air hoses 36c, 36d and the solenoid valve 39. The vacuum generator 40 is constituted by, for example, a vacuum ejector or the like, and can generate a negative pressure by the compressed air supplied via the electromagnetic valve 39. The negative pressure generated in the vacuum generator 40 is supplied to the air manifold 38 via the air hose 36 b.
The air manifold 38 has flow paths branched inside, and valves for controlling opening and closing of the respective flow paths. An air hose 36a is connected to the air manifold 38. As shown in fig. 1, the work holding jig 12 is provided with a plurality of seating portions 20, and a plurality of air hoses 36a connected to the plurality of seating portions 20 are connected to an air manifold 38 shown in fig. 2. The start/end of suction of each seating portion 20 can be individually switched with the opening/closing of the valve in the air manifold 38. When there are a plurality of seating portions 20, a plurality of air manifolds 38 and vacuum generators 40 may be provided. Instead of the air manifold 38, the start/end of the suction of each seating part 20 may be individually switched by the solenoid valve 39. In this case, the air manifold 38 may not be provided with a valve, and the air manifold 38 may function only as a branch flow passage of the flow passage connecting the vacuum generator 40 and the seating part 20.
Instead of connecting the air hoses 36a connected to the plurality of seating portions 20 to the air manifold 38, the vacuum generators 40 may be provided individually for the seating portions 20.
As shown in fig. 1, a plurality of seat portions 20 are arranged along the sewing direction of the sewing mechanism 14. These seating surfaces 20a are provided along a sewing line to be sewn by the sewing mechanism 14, and are formed in substantially the same shape as a workpiece 58 to be sewn (see fig. 5) along the sewing line.
Each seating portion 20 is provided with a cylinder 24 and a guide pin 22, and each seating portion 20 is configured to be retractable. That is, the seat portion 20 is configured to be sequentially retractable as the sewing mechanism 14 approaches.
As shown in fig. 1, the sewing mechanism 14 has a main body 50 in the shape of japanese katakana "コ" when viewed from the side, and a sewing table (post bed)46, a presser foot mechanism 48, and a sewing machine needle 49 are provided on the opposing projecting portions 50a, 50b of the main body 50. As shown enlarged in fig. 5, the presser foot mechanism 48 and the sewing needle 49 are provided on the side of one projection 50a and project toward the other projection 50 b. The sewing table 46 is provided on the other projection 50b side, and extends toward the presser foot mechanism 48 and the sewing machine needle 49.
The presser foot mechanism 48 is configured to be capable of protruding toward the sewing table 46 through the shaft 48a, and when sewing the workpiece 58 to be sewn, the presser foot mechanism 48 presses the workpiece 58 to be sewn against the top end of the sewing table 46. A pair of through holes 48b through which the tip end of the sewing needle 49 can be inserted are provided at the tip end of the presser foot mechanism 48.
The sewing needle 49 is attached so as to be capable of reciprocating in the vertical direction by a drive mechanism (not shown) of the projection 50 a. The reciprocating movement of the sewing needle 49 draws an elliptical trajectory when viewed from the front of the main body 50. Accordingly, even when the main body 50 is moved at a constant speed, the sewing needle 49 can be kept at a constant position and can penetrate the workpiece 58 to be sewn. A thread 52 is inserted through the tip of the sewing needle 49, and the tip of the sewing needle 49 is inserted into the receiving portion of the sewing table 46 through the through hole 48 b. Although not particularly limited, the illustrated sewing machine needles 49 are provided in two numbers, and can form two parallel stitch patterns S.
A looper, not shown, is provided on the sewing table 46, and holds a loop portion of the thread 52 formed by the entry of the sewing needle 49. The sewing table 46 stitches a stitch portion of the sewing needle 49 on a stitch portion formed at an entry portion of the next sewing needle 49, and stitches the stitch portions so as to be connected.
The transfer robot 16 transfers the sewing mechanism 14 and moves a sewing portion of the sewing mechanism 14 at a constant speed along the sewing thread. The transfer robot 16 tilts the main body 50 in accordance with the shape of the sewing position of the workpiece 58, thereby arranging the sewing needle 49 in a direction perpendicular to the sewing position of the workpiece 58.
In the above configuration, the work holding jig 12, the sewing mechanism 14, and the transfer robot 16 are operated under the control of a control circuit, not shown. The sewing device 10 according to the present embodiment is basically configured as described above. The operation and effect of the sewing machine 10 will be described below together with the operation thereof.
As shown in fig. 3A, a workpiece 58 to be sewn is placed on the workpiece holding jig 12. The sewn workpiece 58 is held by the workpiece holding jig 12 in a state of being sucked into the suction hole 30 of the seating portion 20 and seated on the seating surface 20 a. In the case of the workpiece 58 to be sewn for use in an interior material of a vehicle, since the strength is relatively high, even if the back surface of the workpiece 58 to be sewn is not entirely seated but is only partially seated on the seating portion 20, the posture thereof can be maintained to some extent. In this case, the portion of the seating portion 20 retracted can also be elastically deformed to some extent with respect to the clamping by the sewing mechanism 14.
Immediately after the workpiece 58 to be sewn is placed on the workpiece holding jig 12, sewing is started in a state where all the seating portions 20 are sucked. Then, the end of the workpiece 58 to be sewn is held between the presser foot mechanism 48 and the sewing table 46 of the sewing mechanism 14, and sewing is performed while the sewing needle 49 is inserted into and separated from the end.
As shown in fig. 5, the sewing table 46 is separated from the back surface of the workpiece to be sewn 58 in the vertical direction in order to prevent interference with the workpiece to be sewn 58. In the case of the present embodiment, for example, the distance may be about 5mm to 10 mm. Accordingly, the shape of the workpiece 58 to be sewn, which is shaped by the seat portion 20, can be prevented from being deformed by the sewing table 46, and the positional deviation of the sewing thread can be prevented. The presser foot mechanism 48 presses the workpiece 58 to be sewn to a position of the top end surface of the table 46, thereby forming a flat surface on the surface of the workpiece 58 to be sewn in a portion between the table 46 and the presser foot mechanism 48, and adjusting the orientation thereof to be substantially perpendicular to the sewing machine needle 49.
The sewing mechanism 14 is moved rightward in the figure at a constant speed by the transfer robot 16. Accordingly, as shown in fig. 3B, the 1 st seating part 20 located at the position interfering with the sewing mechanism 14 is retracted. When the seating part 20 is retracted, the supply of the negative pressure to the seating part 20 is stopped, and the suction of the workpiece 58 to be sewn is released. Then, the cylinder 24 is lowered to retract the seat portion 20 to a position where it does not interfere with the sewing mechanism 14.
Accordingly, both surfaces of the workpiece 58 to be sewn are in a state of being lifted from the seat part 20, and the sewing mechanism 14 can be moved in this portion along the sewing thread. Further, even when the 1 st seating part 20 is retracted, since the shape of the workpiece 58 to be sewn is held by the 2 nd seating part 20, the workpiece 58 to be sewn can be sewn in a set state.
The sewing mechanism 14 may be inclined depending on the orientation of the surface of the sewing position of the workpiece 58 to be sewn. In this case, the plurality of seating portions 20 located within the range of interference with the sewing mechanism 14 may be retracted.
Then, as shown in fig. 4, the 2 nd seating part 20 is retracted in accordance with the movement of the sewing mechanism 14. The seat portion 20 of the portion of the sewing mechanism 14 that has passed through is returned to the original position.
As described above, by retracting the seat portion 20 of the portion interfering with the sewing mechanism 14 in accordance with the movement of the sewing mechanism 14, the seat portion 20 can be prevented from interfering with the sewing mechanism 14. Accordingly, the sewing mechanism 14 can perform sewing while maintaining the state in which the workpiece 58 to be sewn is shaped by the seat portion 20.
(embodiment 2)
In the present embodiment, an example of the sewing stitch pattern S will be described with an interior material constituting the instrument panel of the vehicle as the workpiece 68 to be sewn. The structure of the sewing machine 10 used in the present embodiment is basically the same as that shown in fig. 1, and the description thereof is omitted.
As shown in fig. 6, the workpiece 68 to be sewn is supplied in a state of being formed into an instrument panel shape. As shown in the enlarged portion of fig. 7A, the workpiece 68 to be sewn is composed of a base material 68b and a soft surface material 68a, wherein the base material 68b is composed of a hard synthetic resin formed into a desired shape; the skin material 68a adheres to the surface of the base material 68 b. The base material 68b is made of, for example, extruded polypropylene, and the skin material 68a is made of, for example, a soft elastomer material having a pattern such as leather.
As shown in fig. 6, a curve L of the workpiece 68 to be sewn is a sewing line to be sewn, and a stitch pattern S is formed along the sewing line L. In the present embodiment, a plurality of the seating portions 20 are provided along the sewing line L. The seating surface 20a of the seating portion 20 has substantially the same shape as the workpiece 68 to be sewn, and is provided with a suction hole 30 (see fig. 1). Each seating portion 20 is provided with a retraction mechanism (not shown) for retracting the same in the Z direction of fig. 6. The structure of the retraction mechanism is the same as that described with reference to fig. 2.
The sewing mechanism 14 (see fig. 1 and the like) moves along the sewing line L of the workpiece 68 to be sewn. The seat portion 20 of the portion interfering with the sewing mechanism 14 is retracted in accordance with the movement of the sewing mechanism 14, thereby enabling sewing while preventing the shape deviation and the position deviation of the workpiece 68 to be sewn. Further, the workpiece 68 to be sewn may be supported by a fixed workpiece holding jig 60 (2 nd workpiece holding jig) having no escape mechanism in combination with a portion separated from the sewing line L without being concerned about interference with the sewing mechanism 14.
Further, the transfer robot 16 (see fig. 1) detects the inclination of the surface of the sewing portion of the workpiece 68 to be sewn, and controls the orientation of the sewing mechanism 14 so that the sewing needle 49 of the sewing mechanism 14 is always perpendicular to the surface of the sewing portion. That is, as shown in the enlarged perspective view of fig. 6, the sewing device 10 (see fig. 1) detects two tangent lines B, C that are partially orthogonal to each other between the two sewing needles 49, and determines the direction of the perpendicular line D with respect to the tangent line B, C. Then, the orientation of the sewing mechanism 14 is controlled so that the axial direction of the sewing needle 49 coincides with the perpendicular line D. Further, in the case where the shape of the workpiece 68 to be sewn is determined, it is not necessary to detect the inclination of the surface by the transfer robot 16 every time sewing is performed. In this case, the transfer robot 16 may be configured to move according to a teaching operation input in advance.
For example, in a cross section along line VIIA-VIIA in fig. 6, as shown in fig. 7A, the direction of a perpendicular line D at the sewing position is largely inclined in the horizontal direction. In the sewing of this portion, the plurality of seating portions 20 that may interfere with the sewing mechanism 14 are retracted.
As shown in fig. 7B, the shape of the workpiece 68 to be sewn cannot be held by only the fixed workpiece holding jig 60 at the portion bent at an acute angle. Therefore, in the conventional sewing device, when the presser foot mechanism 48 is pressed against the sewing table 46 of the sewing mechanism 14, the workpiece 68 is collapsed obliquely to the left and right in the figure, and accurate sewing cannot be performed. In contrast, according to the present embodiment, since the shape of the workpiece 68 to be sewn can be held by the seating portions 20 on both the front and rear sides in the moving direction of the sewing mechanism 14, sewing can be performed with high accuracy even in a portion bent at an acute angle.
(embodiment 3)
In the present embodiment, an example in which the cam mechanism 70 is used as the retraction mechanism of the work holding jig 12 (see fig. 1 and 2) will be described. As shown in fig. 8A, in the present embodiment, a cam mechanism 70 is provided below the guide pin 22.
The cam mechanism 70 of the present embodiment includes a roller 72 and a sliding portion 76 that abuts against the roller 72. The roller 72 is supported by the shaft portion 72a, and is rotated in the arrow direction in the figure by the shaft portion 72 a. A recess 74 recessed in the axial direction is formed in the roller 72. The sliding portion 76 is connected to the base end portion of the guide pin 22. The sliding portion 76 is configured to slide along the outer peripheral portion of the roller 72.
As shown in fig. 8B, as the sliding portion 76 passes through the recess 74, the sliding portion 76 moves downward, and the guide pin 22 and the seating portion 20 connected to the upper end thereof move downward. This enables the seat unit 20 to retreat.
As shown in fig. 8C, the sliding portion 76 is disengaged from the recessed portion 74 with the rotation of the roller 72, whereby the guide pin 22 is raised and the seating portion 20 is returned to the original position. By disposing a plurality of such cam mechanisms 70 in the moving direction of the sewing mechanism 14, the workpiece holding jig 12 (see fig. 1) can be realized. In this case, by shifting the phase of the roller 72 of the cam mechanism 70, a retracting mechanism can be realized in which the bed portion 20 retracts in synchronization with the movement of the sewing mechanism 14. As described above, according to the present embodiment, the apparatus structure of the work holding jig having the retracting mechanism can be simplified.
In the above, the present invention has been described by referring to preferred embodiments, but the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made within a scope not departing from the gist of the present invention.
Claims (7)
1. A sewing device for sewing a workpiece to be sewn along a predetermined sewing line in a state where the workpiece to be sewn is formed into a predetermined shape,
comprising a sewing mechanism, a driving mechanism and a workpiece holding jig, wherein,
the sewing mechanism comprises: a sewing machine needle which pierces or separates a workpiece to be sewn by reciprocating movement; a sewing table facing the sewing machine needle with the workpiece to be sewn therebetween; and a presser foot mechanism for pressing a workpiece to be sewn against the sewing table from the needle side of the sewing machine,
the driving mechanism makes the sewing mechanism move,
the work holding jig holds the sewn work,
the work holding jig has a seating portion and a retreat mechanism, wherein,
a plurality of seat portions are arranged in the moving direction of the sewing mechanism, and the workpiece to be sewn is formed into a predetermined shape and held by being seated on a seating surface having a predetermined shape,
the retreating mechanism retreats at least one of the seating portions from the workpiece to be sewn according to the position of the sewing mechanism, so as to avoid interference between the sewing mechanism and the seating portion.
2. The sewing apparatus of claim 1,
in a retreat area where both surfaces of the workpiece to be sewn are floated by the retreat of the seat part, the sewing mechanism clamps the workpiece to be sewn and arranges the workpiece to be sewn into a flat surface for sewing.
3. Sewing device as claimed in claim 1 or 2,
has a plurality of suction holes provided in a seating surface of the seating portion,
the sewn workpiece is attracted to the suction hole to be held.
4. The sewing apparatus of any one of claims 1-3,
the sewing machine further comprises a 2 nd workpiece holding jig, which is provided at a position not interfering with the moving direction of the sewing mechanism, for supporting the workpiece to be sewn.
5. The sewing apparatus of any one of claims 1-4,
the retraction mechanism is constituted by an air cylinder or a cam mechanism.
6. A workpiece holding jig for a sewing apparatus having a sewing mechanism and a drive mechanism, wherein the sewing mechanism has: a sewing machine needle which pierces or separates a workpiece to be sewn by reciprocating movement; a sewing table facing the sewing machine needle with the workpiece to be sewn therebetween; and a presser foot mechanism for pressing a workpiece to be sewn against the sewing table from a needle side of the sewing machine, the drive mechanism moving the sewing mechanism,
the workpiece holding jig is characterized in that,
has a seating part and a retreat mechanism, wherein,
a plurality of seat portions are arranged in the moving direction of the sewing mechanism, and the workpiece to be sewn is formed into a predetermined shape and held by being seated on a seating surface having a predetermined shape,
the retreating mechanism retreats at least one of the seating portions from the workpiece to be sewn according to the position of the sewing mechanism, so as to avoid interference between the sewing mechanism and the seating portion.
7. A sewing method for sewing a workpiece to be sewn along a predetermined sewing line in a state where the workpiece to be sewn has been formed into a predetermined shape using a sewing mechanism, wherein the sewing mechanism comprises: a sewing machine needle which pierces or separates a workpiece to be sewn by reciprocating movement; a sewing table facing the sewing machine needle with the workpiece to be sewn therebetween; and a presser foot mechanism for pressing a workpiece to be sewn against the sewing table from the needle side of the sewing machine,
the sewing method is characterized in that the sewing machine is provided with a sewing machine,
comprises the following steps:
forming the workpiece to be sewn into a predetermined shape by seating the workpiece to be sewn on a seating portion in which a plurality of seating portions are arranged along a sewing line of the workpiece to be sewn;
forming a retreating region for floating both surfaces of the workpiece to be sewn by retreating a part of the seat section; and
in the retreat area of the workpiece to be sewn, two surfaces of the workpiece to be sewn are clamped by a sewing mechanism to be sewn.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018068189 | 2018-03-30 | ||
| JP2018-068189 | 2018-03-30 | ||
| PCT/JP2019/002915 WO2019187599A1 (en) | 2018-03-30 | 2019-01-29 | Sewing device, workpiece holding jig, and sewing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111936686A true CN111936686A (en) | 2020-11-13 |
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ID=68061127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980023703.7A Pending CN111936686A (en) | 2018-03-30 | 2019-01-29 | Sewing device, work holding jig, and sewing method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20210140084A1 (en) |
| JP (1) | JP6957734B2 (en) |
| CN (1) | CN111936686A (en) |
| WO (1) | WO2019187599A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877926A (en) * | 2020-12-26 | 2021-06-01 | 佛山市顺德区龙江镇友联针织制衣有限公司 | Patch pocket machine of accurate location |
| CN115070875A (en) * | 2021-03-10 | 2022-09-20 | 本田技研工业株式会社 | Clamping device and method for clamping workpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021075122A1 (en) * | 2019-10-16 | 2021-04-22 | 本田技研工業株式会社 | Sewing method and device |
| JP6982055B2 (en) | 2019-12-25 | 2021-12-17 | 本田技研工業株式会社 | Sewing equipment |
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| JPS6329690A (en) * | 1986-07-22 | 1988-02-08 | 工業技術院長 | Cloth support in three-dimensional support |
| JPS6377485A (en) * | 1986-09-22 | 1988-04-07 | 工業技術院長 | Cloth gripping mechanism of sewing apparatus |
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| CN112877926A (en) * | 2020-12-26 | 2021-06-01 | 佛山市顺德区龙江镇友联针织制衣有限公司 | Patch pocket machine of accurate location |
| CN115070875A (en) * | 2021-03-10 | 2022-09-20 | 本田技研工业株式会社 | Clamping device and method for clamping workpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| US20210140084A1 (en) | 2021-05-13 |
| WO2019187599A1 (en) | 2019-10-03 |
| JP6957734B2 (en) | 2021-11-02 |
| JPWO2019187599A1 (en) | 2020-12-17 |
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Application publication date: 20201113 |