DE102008047324B4 - hemming - Google Patents

Abstract

A frame machine (100) comprising: two needle bars (20) for respectively holding two needles (20a); a needle vertical movement mechanism (50) driven by a main shaft motor (101) for moving the two needle bars (20) up and down; a single-needle stopper mechanism (120) configured to separately stop each of the needles (20a) in an upper position; a hemming device (2) holding a hemming patch (WP) on a main suture; a clamping mechanism (1) having a pair clamp (15) descending on respective sides of said hemming apparatus (2) for pressing and holding the main crop and hemming patch (WP), and hauling the main crop and hemming patch (WP) in a cloth advancing direction (F) advances; and control means (5) for controlling the main shaft motor (101), the single-needle stopper mechanism (120) and the clamp mechanism (1) to form first and second seams (P, Q) whose front end positions (n0, n6) are in the work feed direction (F). different from each other, whereby the main sewing material and the welt (WP) are sewn together, characterized in that, when forming front end portions of the first and second seams (P, Q), the control means (5) comprises the main shaft motor (101), the single needle stop mechanism (120) and controlling the clamping mechanism (1) to form the successive sections in the following order: i) a compacted stitch portion (P1) of the first seam (P) whose front end position (n0) is on an upstream side in the fabric feeding direction (F) ii) a densified stitch portion (Q1) of the second seam (Q), iii) a major stitch portion (Q2) of the second seam (Q), s I continues from a stitch end position (n11) of the condensed stitch portion (Q1) of the second seam (Q) to a position (n13) on a line perpendicular to the cloth feed direction (F) and a stitch end position (n5) of the compacted stitch Stitching portion (P1) of the first seam (P) intersects; undiv) a main stitch portion (P2) of the first seam (P) continuing from a stitch end position (n5) of the condensed stitch portion (P1) of the first seam (P), and a main stitch remaining portion (Q2) of the second seam (Q) continuing from the stitch end position (n13) of the main stitch portion (Q2) of the second seam (Q).

Description

TECHNICAL AREA

The present invention relates to a binding machine.

RELATED PRIOR ART

There is known a sewing machine which sews a bordering patch on a main cloth and which forms a straight line cut along a cloth feed direction and substantially V-shaped cuts at both ends of the straight line cut. For example, the sipes formed in the main suture become an opening of a sack in a jacket

When embroidering is done with a binding machine, stitching can be used to prevent stitches from becoming loose at the beginning of stitching and at the end of stitching, such as in 19 shown, compacted sections 202 . 203 with a finer stitch spacing than a stitch interval of a normal main stitch section 201 be formed (see for example JP 2001-25591 A ).

In general, a straight line cut in the main sewing material is formed to extend along a width direction of the sewing material. However, as in 20 From the point of view of design, openings of pockets can be represented M1 . M2 are formed obliquely with respect to the width direction of the sewing material (see, for example JP 63-14636 B2 ). Even with such slanted pockets, a compacted stitching can be performed at the beginning and at the completion of suturing.

As in 21 is shown in a condensed stitch formation at the beginning of the sewing of a sloping pocket a condensed stitch section Y1 a seam Y formed in the Nähgutvorschubrichtung runs to the drain side, by stitching with a single needle and performing the stitch formation in the order of stitch points z0 . z1 . z2 . z3 . z4 , Next are condensed stitch sections X1 . Y2 both seams X, Y by stitching with both needles and by performing a stitch formation in the order of stitch points z4 . z5 . z6 . z7 . z8 . z9 manufactured. Next are main stitch sections X2 . Y3 the seams X, Y formed by performing a stitching in the order of stitch points z9 . z10 . z11 ,

With regard to a compacted stitching at the completion of the stitching of the inclined pocket, as in 22 pictured, first two main stitch sections E1 . J1 the seams E, J formed by performing a stitch formation in order of stitch points g0 . g1 . g2 . g3 and with both needles. Subsequently, condensed stitch sections E2 . J2 the seams E, J by performing stitching in order of stitch points g4 . g5 . g6 . g7 . g8 trained, with both needles. Next is a condensed stitch section E3 one of the seams E by making a stitching with a single needle and performing the stitch formation in order of stitch points g9 . g10 . g11 . g12 . g13 educated.

If you take the bag M1 from 20 as an example of slanted pockets, so it is, as in 23 shown to be preferable in terms of appearance to the boundaries between condensed stitch sections 301 . 302 and a main stitch section 303 one of the seams 300 with boundaries between condensed stitch sections 401 . 402 and a main stitch section 403 the other seam 400 are oriented in up and down directions (see the blackened part in 23 ).

However, according to the skew stitching sequence as described above, start positions of the two main stitch portions are 303 . 403 aligned with each other. Therefore, one of the condensed stitch sections 301 . 402 longer at the beginning of suturing and at the end of suturing. That is, the respective compressed stitch portions become an amount of excess parts 305 . 405 longer in 23 are shown by double-dashed lines.

The result is a difference in length between the compressed stitch sections of the two seams 300 . 400 , and the sewing finish is not pretty. Further, as one of the compressed stitch portions becomes longer, a problem arises in that the stitched sewing cloth becomes stiff.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a binding machine which can make a sewing finish beautiful even in a case where ends of two seams deviate from each other.

• zwei Nadelstangen zum jeweiligen Halten zweier Nadeln;
• einen Nadelvertikalbewegungsmechanismus, der von einem Hauptwellenmotor angetrieben ist, um die beiden Nadelstangen auf und ab zu bewegen;
• einen Einzelnadelstoppmechanismus, der so gestaltet ist, um jede der Nadeln separat in einer oberen Position anzuhalten;
• eine Einfassvorrichtung, die einen Einfassfleck auf einem Hauptnähgut hält;
• einen Klemmmechanismus mit einem Paar von Klemmen, der sich an jeweiligen Seiten der Einfassvorrichtung abwärts bewegt, um das Hauptnähgut und den Einfassfleck zu pressen und zu halten, und der das Hauptnähgut und den Einfassfleck in einer Nähgutvorschubrichtung vorschiebt; und
• Steuermittel zum Steuern des Hauptwellenmotors, des Einzelnadelstopmechanismus und des Klemmmechanismus, um erste und zweite Nähte auszubilden, deren vordere Endpositionen in der Nähgutvorschubrichtung voneinander verschieden sind, wodurch das Hauptnähgut und der Einfassfleck zusammengenäht werden.

According to a first aspect of the invention, a binding machine includes:

• two needle bars for respectively holding two needles;
• a needle vertical movement mechanism driven by a main shaft motor to move the two needle bars up and down;
• a single-pin stop mechanism configured to stop each of the needles separately in an upper position;
• a bordering device that holds a bordering patch on a main thread;
• a clamp mechanism having a pair of clamps descending on respective sides of the hemming device for pressing and holding the main crop and the hemming patch, and advancing the main crop and the hemming patch in a cloth advancing direction; and
• Control means for controlling the main shaft motor, the single needle stopper mechanism and the clamping mechanism to form first and second seams whose front end positions are different from each other in the cloth advancing direction, thereby sewn together the main sewing cloth and the binding patch.

1. i) einen verdichten Stichabschnitt der ersten Naht, dessen vordere Endposition auf einer Zulaufseite in der Nähgutvorschubrichtung ist bezogen auf die vordere Endposition der zweiten Naht,
2. ii) einen verdichten Stichabschnitt der zweiten Naht;
3. iii) einen Hauptstichteilabschnitt der zweiten Naht, der sich von einer Stichendposition des verdichteten Stichabschnitts der zweiten Naht aus zu einer Position auf einer Linie hin fortsetzt, die senkrecht zur Nähgutvorschubrichtung ist und sich mit einer Stichendposition des verdichteten Stichabschnitts der ersten Naht schneidet, und
4. iv) einen Hauptstichabschnitt der ersten Naht, der sich von einer Stichendposition des verdichteten Stichabschnitts der ersten Naht aus fortsetzt und einen Hauptstichrestabschnitt der zweiten Naht, der sich von der Stichendposition des Hauptstichteilabschnitts der zweiten Naht aus fortsetzt.

The bordering machine is characterized in that
when forming front end portions of the first and second seams, the control means controls the main shaft motor, the single needle stop mechanism, and the clamp mechanism to form the successive portions in the following order:

1. i) a compacted stitch portion of the first seam whose front end position is on an upstream side in the fabric advancing direction with respect to the front end position of the second seam;
2. ii) a compressed stitch portion of the second seam;
3. iii) a main stitch portion of the second seam which continues from a stitch end position of the condensed stitch portion of the second seam to a position on a line which is perpendicular to the cloth feed direction and intersects with a stitch end position of the compressed stitch portion of the first seam, and
4. iv) a main stitch portion of the first seam continuing from a stitch end position of the condensed stitch portion of the first seam and a main stitch remaining portion of the second seam continuing from the stitch end position of the main stitch portion of the second seam.

The feeding side in the cloth feeding direction is a side at a starting point of feeding a sewing material to form the seams (for example, a base end side of an arrow F in FIG 11 ) and the drain side in the cloth feed direction is a side on which the sewn sewing material is fed after passing through a piercing point of the needle (for example, a front end side of the arrow F in FIG 11 ). This is the same in the following description.

• zwei Nadelstangen zum jeweiligen Halten zweier Nadeln;
• einen Nadelvertikalbewegungsmechanismus, der von einem Hauptwellenmotor angetrieben ist, um die beiden Nadelstangen auf und ab zu bewegen;
• einen Einzelnadelstoppmechanismus, der so gestaltet ist, um jede der Nadeln separat in einer oben Position anzuhalten;
• eine Einfassvorrichtung, die einen Einfassfleck auf einem Hauptnähgut hält;
• einen Klemmmechanismus mit einem Paar von Klemmen, der sich an jeweiligen Seiten der Einfassvorrichtung abwärts bewegt, um das Hauptnähgut und den Einfassfleck zu pressen und zu halten, und der das Hauptnähgut und den Einfassfleck in einer Nähgutvorschubrichtung vorschiebt;
• Steuermittel zum Steuern des Hauptwellenmotors, des Einzelnadelstoppmechanismus und des Klemmmechanismus, um erste und zweite Nähte auszubilden, deren vordere Endpositionen in der Nähgutvorschubrichtung voneinander verschieden sind, wodurch das Hauptnähgut und der Einfassfleck zusammengenäht werden.

According to a second aspect of the invention, a binding machine includes:

• two needle bars for respectively holding two needles;
• a needle vertical movement mechanism driven by a main shaft motor to move the two needle bars up and down;
• a single needle stop mechanism configured to stop each of the needles separately in an up position;
• a bordering device that holds a bordering patch on a main thread;
• a clamp mechanism having a pair of clamps descending on respective sides of the hemming device for pressing and holding the main crop and the hemming patch, and advancing the main crop and the hemming patch in a cloth advancing direction;
• Control means for controlling the main shaft motor, the single-needle stopper mechanism and the clamping mechanism to form first and second seams whose front end positions are different from each other in the cloth advancing direction, thereby sewing the main sewing cloth and the binding patch together.

1. i) einen verdichteten Stichabschnitt der ersten Naht, dessen vordere Endposition auf einer Ablaufseite in der Nähgutvorschubrichtung ist bezogen auf die vordere Endposition der ersten Naht,
2. ii) einen Hauptstichteilabschnitt der zweiten Naht, der sich von einer Stichendposition des verdichteten Stichabschnitts der zweiten Naht aus zu einer Position auf einer Linie hin fortsetzt, die senkrecht zur Nähgutvorschubrichtung ist und sich mit einer Stichendposition eines verdichteten Stichabschnitts der ersten Naht schneidet,
3. iii) den verdichteten Stichabschnitt der ersten Naht, und
4. iv) den Hauptstichabschnitt der ersten Naht, der sich von der Stichendposition des verdichteten Stichabschnitts der ersten Naht aus fortsetzt, und einen Hauptstichrestabschnitt der zweiten Naht, der sich von der Stichendposition des Hauptstichteilabschnitts der zweiten Naht aus fortsetzt.

The bordering machine is characterized in that
when forming front end portions of the first and second seams, the control means controls the main shaft motor, the single needle stop mechanism, and the clamp mechanism to form the successive portions in the following order:

1. i) a compressed stitch portion of the first seam whose front end position is on a drain side in the cloth feed direction with respect to the front end position of the first seam,
2. ii) a main stitch portion of the second seam which continues from a stitch end position of the condensed stitch portion of the second seam to a position on a line perpendicular to the cloth feed direction and intersects with a stitch end position of a compressed stitch portion of the first seam;
3. iii) the compressed stitch portion of the first seam, and
4. iv) the main stitch portion of the first seam continuing from the stitch end position of the condensed stitch portion of the first seam and a main stitch remaining portion of the second seam continuing from the stitch end position of the main stitch portion of the second seam.

According to a third aspect of the invention, the binding machine further includes a needle pivoting mechanism driven by a needle pivoting motor for pivoting the two needle bars in the workpiece feeding direction. The control means controls the needle swing motor in addition to the main shaft motor, the single needle stop mechanism, and the clamp mechanism to form the front end parts of the first and second seams.

• zwei Nadelstangen zum jeweiligen Halten zweier Nadeln;
• einen Nadelvertikalbewegungsmechanismus, der von einem Hauptwellenmotor angetrieben ist, um die beiden Nadelstangen auf und ab zu bewegen;
• einen Einzelnadelstoppmechanismus, der so gestaltet ist, um jede der Nadeln separat in einer oben Position anzuhalten;
• eine Einfassvorrichtung, die einen Einfassfleck auf einem Hauptnähgut hält;
• einen Klemmmechanismus mit einem Paar von Klemmen, der sich an jeweiligen Seiten der Einfassvorrichtung abwärts bewegt, um das Hauptnähgut und den Einfassfleck zu pressen und zu halten, und der das Hauptnähgut und den Einfassfleck in einer Nähgutvorschubrichtung vorschiebt; und
• Steuermittel zum Steuern des Hauptwellenmotors, des Einzelnadelstoppmechanismus und des Klemmmechanismus, um erste und zweite Nähte auszubilden, deren hintere Endpositionen in der Nähgutvorschubrichtung voneinander verschieden sind, wodurch das Hauptnähgut und der Einfassfleck zusammengenäht werden.

According to a fourth aspect of the invention, a binding machine includes:

• two needle bars for respectively holding two needles;
• a needle vertical movement mechanism driven by a main shaft motor to move the two needle bars up and down;
• a single needle stop mechanism configured to stop each of the needles separately in an up position;
• a bordering device that holds a bordering patch on a main thread;
• a clamp mechanism having a pair of clamps descending on respective sides of the hemming device for pressing and holding the main crop and the hemming patch, and advancing the main crop and the hemming patch in a cloth advancing direction; and
• Control means for controlling the main shaft motor, the single needle stopper mechanism and the clamping mechanism to form first and second seams whose rear end positions are different from each other in the cloth advancing direction, thereby sewn together the main sewing cloth and the binding patch.

1. i) einen Hauptstichabschnitt der zweiten Naht, dessen hintere Endposition auf einer Ablaufseite in der Nähgutvorschubrichtung ist bezogen auf die hintere Endposition der ersten Naht, und einen Hauptstichteilabschnitt der ersten Naht, der sich zu einer Position auf einer Linie hin erstreckt, die senkrecht zur Nähgutvorschubrichtung ist und sich mit einer Stichendposition des Hauptstichabschnitts der zweiten Naht schneidet,
2. ii) einen Hauptstichrestabschnitt der ersten Naht, der sich von der Stichendposition des Hauptstichteilabschnitts der ersten Naht aus fortsetzt,
3. iii) einen verdichteten Stichabschnitt der ersten Naht, der sich von einer Stichendposition des Hauptstichrestabschnitts der ersten Naht aus fortsetzt, und
4. iv) einen verdichteten Stichabschnitt der zweiten Naht, der sich von der Stichendposition des Hauptstichabschnitts der zweiten Naht aus fortsetzt.

The bordering machine is characterized in that
when forming back end portions of the first and second seams, the control means controls the main shaft motor, the single needle stop mechanism, and the clamp mechanism to form the successive portions in the following order:

1. i) a main stitch portion of the second seam, the rear end position thereof on a downstream side in the fabric feed direction with respect to the rear end position of the first seam, and a main stitch portion of the first seam extending to a position on a line perpendicular to the fabric advancing direction and intersects with a stitch end position of the main stitch portion of the second seam,
2. ii) a main stitch remaining portion of the first seam that continues from the stitch end position of the main stitch portion of the first seam,
3. iii) a densified stitch portion of the first seam continuing from a stitch end position of the main stitch remaining portion of the first seam, and
4. iv) a densified stitch portion of the second seam continuing from the stitch end position of the main stitch portion of the second seam.

• zwei Nadelstangen zum jeweiligen Halten einer Nadel;
• einen Nadelvertikalbewegungsmechanismus, der von einem Hauptwellenmotor angetrieben ist, um die beiden Nadelstangen auf und ab zu bewegen;
• einen Einzelnadelstoppmechanismus, der so gestaltet ist, um jede der Nadeln separat in einer oberen Position anzuhalten;
• eine Einfassvorrichtung, die einen Einfassfleck auf einem Hauptnähgut hält;
• einen Klemmmechanismus mit einem Paar von Klemmen, der sich an jeweiligen Seiten der Einfassvorrichtung abwärts bewegt, um das Hauptnähgut und den Einfassfleck zu pressen und zu halten, und der das Hauptnähgut und den Einfassfleck in einer Nähgutvorschubrichtung vorschiebt; und
• Steuermittel zum Steuern des Hauptwellenmotors, des Einzelnadelstoppmechanismus und des Klemmmechanismus, um erste und zweite Nähte auszubilden, deren hintere Endpositionen in der Nähgutvorschubrichtung voneinander verschieden sind, wodurch das Hauptnähgut und der Einfassfleck zusammengenäht werden.

According to a fifth aspect of the invention, a binding machine includes:

• two needle bars for respectively holding a needle;
• a needle vertical movement mechanism driven by a main shaft motor to move the two needle bars up and down;
• a single-pin stop mechanism configured to stop each of the needles separately in an upper position;
• a bordering device that holds a bordering patch on a main thread;
• a clamp mechanism having a pair of clamps descending on respective sides of the hemming device for pressing and holding the main crop and the hemming patch, and advancing the main crop and the hemming patch in a cloth advancing direction; and
• Control means for controlling the main shaft motor, the single needle stopper mechanism and the clamping mechanism to form first and second seams whose rear end positions are different from each other in the cloth advancing direction, thereby sewn together the main sewing cloth and the binding patch.

1. i) eine Hauptstichabschnitt der zweiten Naht, dessen hintere Endposition auf einer Ablaufseite in der Nähgutvorschubrichtung ist bezogen auf die hintere Endposition der ersten Naht, und einen Hauptstichteilabschnitt der ersten Naht, der sich zu einer Position auf einer Linie hin erstreckt, die senkrecht zur Nähgutvorschubrichtung ist und sich mit einer Stichendposition des Hauptstichabschnitts der zweiten Naht schneidet,
2. ii) einen verdichteten Stichabschnitt der zweiten Naht, der sich von der Stichendposition des Hauptstichabschnitts der zweiten Naht aus fortsetzt,
3. iii) einen Hauptstichrestabschnitt der ersten Naht, der sich von der Stichendposition des Hauptstichteilabschnitts der ersten Naht aus fortsetzt, und
4. iv) einen verdichteten Stichabschnitt der ersten Naht, der sich von einer Stichendposition des Hauptstichrestabschnitts der ersten Naht aus fortsetzt.

The bordering machine is characterized in that
when forming rear end portions of the first and second seams, the control means includes the main shaft motor, the single needle stop mechanism and the Control clamping mechanism to form the successive sections in the following order:

1. i) a main stitch portion of the second seam whose rear end position is on a downstream side in the cloth feed direction with respect to the rear end position of the first seam, and a main stitch portion of the first seam extending to a position on a line perpendicular to the cloth feed direction and intersects with a stitch end position of the main stitch portion of the second seam,
2. ii) a densified stitch portion of the second seam continuing from the stitch end position of the main stitch portion of the second seam,
3. iii) a main stitch remaining portion of the first seam continuing from the stitch end position of the main stitch portion of the first seam, and
4. iv) a compacted stitch portion of the first seam continuing from a stitch end position of the main stitch remaining portion of the first seam.

According to a sixth aspect of the invention, the binding machine further includes a needle pivoting mechanism driven by a needle pivoting motor for pivoting the two needle bars in the workpiece feeding direction. The control means controls the needle swing motor in addition to the main shaft motor, the single needle stop mechanism, and the clamp mechanism to form the rear end portions of the first and second seams.

According to the present invention, even in a case where the end positions of the two seams differ in the cloth advancing direction, the lengths of the compressed stitch portions to be formed at the end portions of the respective seams can be made equal so as to retard the appearance of the seams The stitching can be made beautiful, and the problem that the stitched fabric becomes stiff can be solved.

list of figures

• 1 is a perspective view of a binding machine according to an embodiment of the invention.
• 2 Fig. 11 is a front view of a needle bar mechanism showing a state in which two needle bars are held in their top dead center positions.
• 3A is a side view of a needle bar.
• 3B is a front view of the needle bar.
• 4 Figure 11 is a front view of the needle bar mechanism showing a state in which the two needle bars are held in their bottom dead center positions.
• 5 is a sectional view of the needle bar mechanism along the XY plane, which through the center line of one of the needle bars of 2 runs.
• 6 Fig. 10 is a front view of the needle bar mechanism showing a state immediately after releasing the holding state of one of the needle bars.
• 7 is a sectional view of the needle bar mechanism along the XZ plane through the center line of one of the needle bars of 6 runs.
• 8th Figure 11 is a front view of the needle bar mechanism showing a state in which the holding state of one of the needle bars is released and the needle bar is moved to a bottom dead center.
• 9 is a perspective view of a bordering device.
• 10 FIG. 10 is a block diagram of an embodiment of a control device of the binding machine. FIG.
• 11 is a diagram illustrating a method for sewing first portions of sutures.
• 12 FIG. 10 is a flowchart of the method of sewing the first portions of the seams. FIG.
• 13 Figure 11 is a diagram illustrating a modified method of sewing first portions of sutures.
• 14 FIG. 10 is a flowchart of the modified method for sewing the first portions of the seams. FIG.
• 15 Figure 11 is a diagram illustrating a method of sewing last portions of sutures.
• 16 Figure 11 is a flow chart of the method for sewing the last portions of the seams.
• 17 is a diagram showing a modified method for sewing last portions of seams.
• 18 is a flowchart of the modified method for sewing the last sections.
• 19 is an explanatory view of a condensed stitch formation.
• 20 is an explanatory view oblique pockets which are formed on a Hauptnähgut.
• 21 Figure 11 is a diagram illustrating a conventional method of sewing first portions of sutures.
• 22 is a diagram showing a conventional method of sewing last sections of sutures.
• 23 Fig. 10 is an explanatory view showing a problem relating to compressed stitch portions when sewing oblique pockets of the prior art.

DETAILED DESCRIPTION

Hereinafter, a binding machine according to an embodiment of the present invention will be described in detail with reference to the drawings.

TOTAL CONFIGURATION OF THE IMPRESSION MACHINE

1 is a perspective view of an overall configuration of the binding machine 100 , In the embodiment, respective directions are defined with respect to XYZ axes shown in the drawing, the Z-axis direction coinciding with a vertical direction of movement of a central blade. A plane on which a sewing operation is performed is perpendicular to the Z-axis direction, a direction parallel to the work plane and in which a cloth is fed is the X-axis direction, and a direction parallel to the work plane and perpendicular to the X-axis direction is, is the Y-axis direction

As in 1 pictured is the binding machine 100 a sewing machine sewing a hemming patch onto a main sewing material and forming a straight cut along the cloth feeding direction and substantially V-shaped cuts at both ends of the straight cut.

The binding machine 100 includes: a sewing machine table 11 serving as a work table for sewing a sewing machine body 12 including a pair of thread take-up levers (not shown) and a needle bar mechanism 10 (please refer 2 ), which controls the movement of needle bars that respectively hold needles, the sewing machine body 12 on the sewing machine table 11 is arranged, a clamping mechanism 1 serving as a cloth feed mechanism which feeds the cloth, that is, the main cloth and the pad, a cradle 2 which holds down the hemming patch on an upper side of the main tray from above, a movable cutter mechanism (not shown) held by the sewing machine body and moving the cutter up-and-down in the cloth feeding direction of the center position between the needles to form an incision in the respective sewing materials, a corner knife mechanism 9 which forms substantially V-shaped cuts at both end positions of a linear incision and a control device 5 (please refer 10 ) serving as a control means which controls the respective parts.

NEEDLE BAR MECHANISM

As in 2 to 8th is shown, the needle bar mechanism 10 inside the front end part of the sewing machine body 12 provided and simultaneously or optionally moves a pair of needle bars 20 up and down, the two needles separately 20a hold.

The needle bar mechanism 10 includes: a pair of needle bars 20 in which, as in 3A and 3B shown, in each case a first engagement opening 21 and a second engagement opening 22 are formed, a needle bar holding frame 40 which serves as a needle bar holder which holds the needle bars 20 separated so as to be movable up and down, a needle vertical movement mechanism 50 , the one of each of the needle bars 20 moved up and down, using a needle bar holder 51 is used, which is the pair of needle bars 20 holds separately, and a single needle stop mechanism 120 , as in 2 shown. The single needle stop mechanism 120 closes a clutch mechanism 60 one holding each needle bar 20 through the needle bar holder 51 in a holding state and a release state, wherein a pair of coupling members 61 is used, which allow their front end parts in the first engagement opening 21 each of the needle bars 20 introduced and removed, a stopper mechanism 70 passing through the needle bar holding frame 40 using a stop member 71 is held, which allows its front end in the second engagement opening 22 the needle bar 20 introduced and removed therefrom, their retention by coupling mechanism 60 is released as in 5 and a hold release switching mechanism 80 , one of the needle bars 20 selects the hold state and release state in the clutch mechanism 60 , as in 3 and 5 shown to switch.

NEEDLE ROD

As in 2 to 5 shown are the needle bars 20 generally by the Needle bar holding frame 40 are held so as to extend along the Z-axis direction, and when the needles are pivoted, becomes over the needle bar holding frame 40 given a pivotal pivotal movement about an axis extending along the Y-axis direction at a longitudinal center position of each of the needle bars 20 , When this pivoting is performed, each of the upper and lower ends of each of the needle bars vibrates 20 along the X-axis direction.

Every needle bar 20 is a rod-shaped body on which a flat surface 23 is formed on a part of a peripheral surface of a round bar having a circular cross section, and each needle bar performs the holding of the needle 20a through at the bottom. In a state where the needle bar 20 is held along the Z-axis direction, becomes the flat surface 23 through the needle bar holding frame 40 held so that it extends along the YZ plane. At an intermediate position in the Z-axis direction is at the level of the flat surface 23 in the longitudinal direction of a groove 24 educated.

Furthermore, the first engagement opening 21 and the second engagement opening 22 near the bottom and top of the groove 24 at the level of the flat surface 23 formed so that they are the groove 24 overlap. The first intervention opening 21 is formed in a rectangular shape corresponding to the shape of the front end of the coupling member, so that it is possible, the front end of the coupling member 21 to introduce it there. This rectangular shape corresponds to the fact that the front end of the coupling member 61 protrudes in a rectangular shape, and the lengths of long sides and short sides of the rectangular shape is set to be slightly larger than the lateral width and longitudinal width of the front end of the substantially rectangular front end of the coupling member 61 is. The second engagement opening 22 is above the first engagement opening 21 and is in front view in a rectangular shape and in side view in a semicircular shape in accordance with the shape of the front end of the stopper to be described later 71 trained (see 5 ).

On the inside of the groove 24 is a swivel plate 25 attached so that they are along the longitudinal direction of the groove 24 is pivotable. This swivel plate 25 is supported by a support shaft extending along the Y-axis direction at an intermediate position between the first engagement hole 21 and the second engagement opening 22 extends, and both ends of the same move during pivoting along the Y-axis direction. That is, one end and the other end of the pivot plate 25 move along the depth direction of the engaging holes 21 respectively 22 each within the first engagement opening 21 and the second engagement opening 22 ,

Furthermore, the pivot plate 25 formed in such a shape that when one end in the vicinity of a deep part of the first engagement opening 21 is pressed, the other end to the flat surface 23 within the second engagement opening 22 is pushed out, and when the other end in the vicinity of a deep part of the second engagement opening 22 is pressed, one end becomes a flat surface 23 within the first engagement opening 21 pushed out.

That is, for the same needle bar: when the coupling member 61 in the first engagement opening 21 is introduced, the stopper becomes 71 , which is already in the second engagement opening 22 is inserted through the pivot plate 25 pushed out. If furthermore the coupling member 61 in the second engagement opening 22 is introduced, the coupling member 61 , which is already in the first intervention opening 21 is inserted from the pivot plate 25 pushed out.

If continue the needle bar 20 performs a vertical movement, is their first engagement opening 21 in engagement with the clutch mechanism 60 , and the needle bar is replaced by the needle bar holder 51 held. On the other hand, when vertical movement is prevented to perform suturing by a single needle, the clutch mechanism becomes 60 solved, and the second engagement opening 22 is engaged with the stopper mechanism 70 and the needle bar holding frame 40 is held.

NEEDLE ROD RETAINING FRAME

As in 2 . 4 and 7 are upper and lower parts of the needle bar holding frame 40 equipped with two insertion holes that allow the needle bars 20 insert so that they are aligned in the Y-axis direction, and these insertion openings hold the needle bars 20 each so that they are movable up and down.

A feeder link 21 For example, a nonwoven fabric or urethane supplied with lubricating oil or grease is near a holding portion of the needle bar 20 at the lower part of the needle bar holding frame 40 provided, and each of the needles 20 is controlled so that it is on the feeder link 41 slides. This allows the lubricating oil or grease to be a sliding part between each of the needle bars 20 and the needle bar holding frame 40 is supplied, and allows the needle bar is moved smoothly up and down.

Furthermore, the stop mechanism 70 near the holding part of the needle bar 20 at the upper part of the needle bar holding frame 40 provided, and the holding release switching mechanism 80 is just below the stop mechanism 70 of the needle bar holding frame 40 intended. The stop mechanism 70 and the hold release switching mechanism will be described below in detail.

Furthermore, a guide groove 42 showing a vertical movement of an angular piece 55 which leads to one end of a connecting body 54 is provided, which a driving force for a vertical movement of each of the needle bars 20 gives up, near the needle bar 20 formed by the needle bar holding frame 40 is held.

Furthermore, one end of a pivot shaft 43 , which provides a pivot drive force for needle swing motion, with a vertical intermediate position at one end of the needle bar support frame 40 connected in the Y-axis direction. This pivot shaft 43 is rotatably supported by a sewing machine frame in a state in which the shaft extends along the Y-axis direction, and is connected to a pivoting mechanism which synchronizes with the vertical movement of the needle bar 20 pivoted. Furthermore, the swivel mechanism can adjust its swivel angle range from 0 to a certain range of angles by a configuration known per se, and the swivel mechanism is capable of having a needle passing through each of the needle bars 20 is held to pivot along the X-axis direction with arbitrary swing if necessary, that is, the pivot mechanism functions as a needle swing mechanism. Furthermore, in a state in which a Nadelverschwenkung is not carried out, the pivoting mechanism for the Nadelverschwenkung is adjusted so that each of the needle bars 20 extends along the Z-axis direction.

NEEDLE VERTICAL MOVEMENT MECHANISM

As in 2 illustrated, the needle vertical movement mechanism closes 50 a: a needle bar holder 51 , the one of each of the needle bars 20 through the clutch mechanism 60 holds a sewing machine main shaft 52 coming from a main shaft motor 101 is rotationally driven, wherein the motor is a vertical motion driving source of each of the needle bars 20 is, a turning weight 53 Being at one end of the main sewing machine source 52 arranged and attached to the same, a connecting body 54 that the rotary weight and the needle bar holder 51 connects together, and an angular piece 55 which is the end of the connecting body 54 moved on the side of the needle bar holder along the Z-axis direction. The main shaft motor 101 For example, a normal or reversely rotatable motor formed by an AC servomotor. In the following description will be made with regard to the direction of rotation of the motor shaft when the main shaft motor 101 is driven, a rotation of the sewing machine main shaft 52 in a normal direction defined to be driven in normal rotation.

CLUTCH MECHANISM

As in 2 and 4 to 7 shown, the clutch mechanism closes 60 one: two coupling links 61 placed in circular holding openings 57 are inserted from the front of the needle bar holder 51 formed to respective insertion openings, two driven links 62 , which individually the coupling members 61 move forward and backward, two springs 63 , which in the forward direction the coupling members 61 over the driven links 62 communicate one motive force, two locking claws 64 which the coupling members 61 each in their retracted state (release positions) lock, two compression springs 65 which the locking claws 64 in each case in the directions in which a locking of the locking claws is performed, and a release pin 66 from the outside, the process of locking release by each locking claw 64 can enter.

As in the 5 and 7 As shown, each of the two driven links is formed so as to be curved in the vicinity of its longitudinal center portion, and the curved portion P is rotatable on the needle bar holder 51 attached. One end of the driven link 62 is with the coupling member 61 connected.

As in 7 shown, then pulls when the driven link 62 is depressed from above and rotated in the direction A with the curved part P as a rotation axis, one end of the driven link 62 on the coupling member 61 and causes the coupling member 61 from the first intervention opening 21 retracted and at each locking claw 64 is locked, so that the engagement connection of the needle bar 20 with the needle bar holder 51 which is the coupling member 61 corresponds, can be released.

If continue, as in 5 shown the release pin 66 is depressed from above, whereby the locking by the locking claw 64 of the coupling member 61 is released, the coupling member 61 to the first intervention opening 21 moved forward, by the bias of the compression spring 63 so that both needle bars 20 With the needle bar holder 51 can be brought into engagement.

HOLD RELEASE switching mechanism

As in 2 and 5 to 7 1, the hold release switching mechanism closes 80 a guide groove 82 one in the needle bar holding frame 40 at a position slightly above the top dead center of the needle bar holder 51 is formed, further a switching element 81 which slidably along the guide groove 82 is held, and a pressure cover 83 , which prevents the switching element 81 from the guide groove 82 fall out.

The guide groove 82 is along the Y-axis direction in the upper part of the needle bar holding frame 40 trained and holds the switching element 51 slidable along the same direction.

The overall shape of the switching element 81 is essentially a prismatic column. One end of the switching element 81 is with a berth 81a formed projecting in the direction perpendicular to the longitudinal direction, and the other end of the switching member is for Nadelstangenverschwenkung with an electromagnetic valve 90 a compressed air cylinder (see 10 ), which is not shown and provided on the outside of the sewing machine frame.

In particular, the electromagnetic valve 90 the air cylinder for Nadelstangenverschwenkung with the control device 5 via a driver 90a connected. An air cylinder of the three-position type with two electromagnetic valves 90 inside a cylinder is used as a pneumatic cylinder for Nadelstangenverschwenkung. By controlling the drive of the two electromagnetic valve 90 inside the cylinder by the control device 5 can the position of the switching element 81 that with the electromagnetic valves 90 connected in three positions. This makes it possible to switch over to three types of stitching, including suturing through a left needle, through both needles and through a right needle.

Switching the position of the switching element 81 can be performed using an electromagnet and is not limited to the air cylinder. In particular, a piston of two electromagnets can with the switching element 81 be connected, and the two electromagnets by the control device 5 be controlled individually. That is, a drive of the switching element 81 can be electrically controlled, the type of drive source is irrelevant.

The switching element 81 is from the guide groove 82 held in a state in which the abutment projection 81a turned down. By the movement of the switching element 81 along the Y-axis direction, the abutment projection 81a be switched to a position in which he a driven link 62 , the other driven link 62 or the release pen 66 the clutch mechanism 60 at the time of arrival of the needle bar holder 51 at top dead center presses. Next to it is this berth 81a set so that it has a protruding length such that it each driven link and the release pin 66 of the needle bar holder 51 as far as how a stroke is required for the actuation of the release or engagement of each driven link and the release pin.

STOPPER MECHANISM

As in 5 and 7 shown, the stopper mechanism closes 70 a: a holding part 72 which has two circular through-holes extending from the front of the needle bar holding frame 40 out to the insertion holes of the needle bar 20 at the upper end of the needle bar holding frame 40 are drilled through, two stopper links 71 , which in the through holes of each holding part 72 are used, two compression springs 73 connecting the stopper members 71 in each case a motive force in the forward direction (on the side of the needle bar 20 ), and a cover body 74 that is every spring 73 on the back holds and the through holes of the holding part 72 covers and closes.

SEWING MACHINE TABLE AND SEWING MACHINE BODY

As in 1 is shown, the sewing machine table 11 , used in a state where its surface is parallel to the XY plane and is horizontal. The top of the sewing machine table 11 is formed in a rectangular shape, which is elongated in a Nähgutvorschubrichtung F, that is along the X-axis direction. The clamping mechanism and the bordering device 2 are at the sewing machine table 11 arranged, and the corner knife mechanism 9 is under the sewing machine table 11 intended.

Furthermore, a stitch plate 13 in a position under the two needles 20a at the sewing machine table 11 intended. Openings, each of the two needles 20a match, are in this throat plate 13 provided, and (not shown) horizontal boats are each provided below the openings. That is, a sewing thread through each the needles 20a is inserted from the corresponding horizontal boat below the throat plate 13 and is engulfed with a bobbin thread, which is discharged from the horizontal boat, whereby the sewing process is completed.

Furthermore, a slot in which the central knife 3 is used on the discharge side in the Nähgutvorschubrichtung F approximately in a central position between the two openings of the throat plate 13 formed, and a (not shown) stationary knife, which is a fabric in cooperation with the central knife 3 is cut in, is provided.

The sewing machine body 12 includes: a bed section 12a which is adjacent to a longitudinal intermediate position of the sewing machine table 11 is arranged, a vertical body part 12b that is from the bed section 12a rises, and an arm part 12c extending along the Y-axis direction from the upper end of the vertical body portion 12b runs. Main components of the needle vertical movement mechanism 40 and the movable knife mechanism are in the arm part 12c accommodated. Furthermore, the two needles 20a and the central knife 3 from a lower end of a front end part of the arm part 12c hung up and held.

CLAMP MECHANISM

The clamping mechanism 1 includes: clamps 15 which hold both ends downwardly in the width direction of a bordering patch which enters the bordering device 2 is inserted from above, a holder 16 which these terminals 15 holds, and a (not shown) compressed air cylinder, which the terminals 15 through the holder 16 moved up and down, and one of the main shaft motor 101 separate clamping motor 102 that surrounds the border and the main thread coming from the clamps 15 held down over the holder 16 moved in the Nähgutvorschubrichtung F.

Every clamp 15 is a rectangular, flat plate and comes from the holder 16 held in a state in which its longitudinal direction coincides with the X-axis direction. Furthermore, every clamp is 15 held so that their flat surface is parallel to the XY plane. Also, each clamp can be switched by the drive of the air cylinder in two upper and lower positions, being in its upper position from the top of the sewing machine table 11 is separated and its lower position, the height of the surface of the sewing machine table 11 Has. Furthermore, the two terminals 15 held in a state in which they are so separated that at least one upwardly rising plate part 32 the bordering device 20 between them.

The holder 16 is held so that it is along the X-axis direction on the sewing machine table 11 is movable, and is arranged such that the clamps to be held 15 through both sides of vertical movement paths of the two needles 20a pass through. Furthermore, the holder 16 from the clamping mechanism 102 driven by a ball screw motor (not shown).

EINFASSVORRICHTUNG

As in 1 and 9 shown, closes the bordering device 2 a: a bottom plate 31 , which is a long flat plate, a protruding plate part 32 that is starting from the top of the bottom plate 31 rises vertically along the longitudinal direction, a guide member 33 which has a border WP on the downstream side in the cloth feed direction toward the end of the protruding plate part 32 leads, with the central knife 3 is bypassed, and longitudinal guide parts 34 which guide both ends of the border in the width direction so as to be along both surfaces of the protruding plate part 32 be advanced.

Furthermore, the binding device 2 held by a holding mechanism (not shown) that encloses a pneumatic cylinder, and becomes, as in 1 shown, then, when it is not needed, from a position below the two needles 20a detached and withdrawn. When not in use, the bordering device is set in the needle plate position by the drive of the air cylinder.

The bottom plate 31 is formed in a rectangular shape and, when not in use, is held such that its longitudinal direction is parallel to the X-axis direction, and its bottom surface directly faces the top of the sewing machine table 11 is opposite and placed on it. Furthermore, the front end of the bottom plate 31 in the Nähgutvorschubrichtung with substantially U-shaped cutouts 31a formed as grooves for performing a stitch formation with the two needles 20a serve.

The protruding plate part 32 as a whole is a rectangular, flat plate except a part near the guide member 33 , and rises in an intermediate position of the bottom plate 31 in the width direction (Y-axis direction) on the top of the bottom plate 31 in a state in which he is using the longitudinal direction of the bottom plate 31 is aligned. That is, the binding device 2 is formed in one piece so that the bottom plate 31 and the protruding plate part 32 the figure assume an inverted T looking in the longitudinal direction.

When a border is placed so that it has a main thread on the throat plate 13 overlaps, the bezel becomes 2 Placed from above, both ends of the Einfassflecks in its width direction are folded back and from both ends of the bottom plate 30 erected in the width direction upward, and both ends of the border in its width direction are separated from the clamps 15 held so that they are along the two side surfaces of the protruding plate part 32 run. That is, the border is caused from a side surface of the protruding plate part 32 over the bottom plate 31 to the other side surface 32 to get lost. In a state in which the fiming patch in this way around the binding device 2 The sewing process is done by the two needles 20a on both sides of the protruding plate part 32 carried out while the Einfassfleck and Hauptnähgut be advanced, and there will be a straight incision by the vertical movement of the central knife 3 educated.

As described above, the two flat plate-shaped, longitudinal guide parts 34 and 34 are respectively provided at both ends of the border in its width direction, so as to form a state along both side surfaces of the protruding plate part 32 and on each side surfaces of the protruding plate member 32 in the vicinity of it. Each of the longitudinal guide parts 34 is bent such that the gap of the protruding plate part 32 from the end of the longitudinal guide member on the feed side increases in Nähgutvorschubrichtung, and the gap is still kept drain side constant as the end. That is, one end of the border in its width direction becomes a gap between each longitudinal guide part and the protruding plate part 32 introduced, and the one end is guided so that a state along a side surface of the protruding plate member 32 is maintained.

Furthermore, the central knife 3 on an extended line of the protruding plate part 32 directly in the material feed direction F on the discharge side of the bordering device 2 arranged. Since both ends of the border in its width direction are in the Nähgutvorschubrichtung F to the downstream side along the protruding plate member 32 move, is the leading link 33 provided such that the Einfassfleck from the central knife 3 can not be torn separately. The guide member 33 is starting from the end of the protruding plate part 32 formed integrally on the discharge side in the Nähgutvorschubrichtung F and designed so that it is bifurcated to the Nähgutvorschubrichtung F and in plan view has a substantially V-shape. Around the border of the central knife 3 being more effective is the guiding element 33 arranged so that it is as close as possible to the central knife 3 and the central knife 3 covering from both sides. By this shape, both ends of the border are guided in its width direction in a direction in which they from the protruding plate part 32 through the gap between the longitudinal guide part 34 and the guide member 33 are separated, at the time of Nähgutvorschubs, and they are guided in one direction to the central knife 3 to get around.

ECKMESSERMECHANISMUS

As in 1 and 9 the corner knife mechanism is shown 9 on a path of the terminal 15 through the clamping mechanism 1 under the sewing machine table 11 arranged, and the Einfassfleck and Hauptnähgut, by the clamping mechanism 1 are supplied by the Eckmesser 91 pierced from below, thereby forming substantially V-shaped cuts at positions that become the two ends of a straight incision.

That is, the corner knife mechanism 9 closes two corner knives 91 a, which are arranged at intervals in the Nähgutvorschubrichtung F, and a motor, not shown, for vertical movement of each Eckmesser 91 moved up and down.

Every corner knife 91 consists of a pair of triangular knives, which are arranged so that its shape, seen from its upper end, becomes V-shaped, and is held with its tip facing upwards. In addition, the corner blade moves through the motor for vertical movement from below the surface of the sewing machine table 11 from, so that a V-shaped incision can be formed in the fabric. Furthermore, every corner knife 91 capable of adjusting the angle between a pair of triangular knives, and is capable of the gap between two seams through the two needles 20a correspond to.

In addition, the two corner knives 91 held so that openings to be formed V-shaped incisions are aligned in opposite directions to each other. Furthermore, the two corner knives 91 enabled to adjust the gap between them.

When a fabric in which two seams and a straight cut are formed, from the clamping mechanism 1 to a position just above the corner knife mechanism 9 is fed, moves the Eckmessermechanismus 9 the two End Bits 91 at end positions of the incision up and down, whereby two V-shaped cuts are formed in the fabric. That is, at both ends of a straight incision are made by the corner knife mechanism 9 an incision extending from one end of the straight incision to the proximal ends of the two sutures, and another incision extending from the other end of the linear incision toward the proximal ends of the two sutures.

CONTROL DEVICE

As 10 shows are a scoreboard 84 representing predetermined characters or image information to be communicated to a user, a setting switch 85 , which with the scoreboard 84 is connected to screen selections or command inputs to perform certain types of adjustment, a numeric keypad 86 for inputting a numerical input and determining or deleting it when various types of adjustment are made, and a start switch 87 , which inputs the sewing start, via an input / output circuit, which are not shown, with the control device 5 connected. In addition, when a bordering operation is performed, the scoreboard 84 used to set various types of stitch information, such as the length and stitch spacing of the two needles 20a the fabric feed direction deviation of front and rear ends of each seam formed by each of the needles, the cloth feed direction length and the condensed stitch interval of compacted stitch portions to be formed at front and rear ends of each seam, and the length of a central cut formed by the Central knife 3 is to be formed, and the formation position of the incision.

Furthermore, the main shaft motor 101 , the clamping motor 102 and the knife motor 103 as objects to be controlled respectively to the control device 5 via driver stages 101 . 102 . 103a connected. Furthermore, a compressed air cylinder, which is the vertical movement of the bordering device 2 executed, a pneumatic cylinder, which is the lifting of the clamp 15 and a motor (not shown) for vertical movement which raises each corner knife 91 performs, via a driver stage with the control device 5 connected. Furthermore, an electromagnetic valve 104 of the air cylinder, the operating state and non-operating state of the central blade 3 switches over a driver stage 104a connected. Furthermore, a needle pivot motor 105 that with the pivot shaft 43 connected to the Nadelverschwenkung the needle 20a to execute, to the control device 5 via a driver stage 105a connected. Furthermore, an electromagnetic valve 90 a pneumatic cylinder for needle bar switching to the position of the switching element 81 of the single needle stop mechanism 120 switch over a driver stage 90a with the control device 5 connected.

The control device 5 includes: a CPU 151 performing various kinds of arithmetic processes, a ROM 152 into which control programs, which functions and operations of the binding machine 100 to execute, control data or various Nähdaten are inscribed, a RAM 153 which stores various data concerning processes of the CPU 151 in a workspace, and an EEPROM 154 as a stitch information storage means containing different stitch information from the scoreboard 84 entered and set stores.

A control program, which drives the main shaft motor 101 , the single needle stop mechanism 120 and the clamping mechanism 1 controls is in ROM 152 stored in such a way that when front end portions of the two seams P . Q from the two needles 20a be formed on a fabric, a condensed stitch section P1 the first seam P , whose front end position is arranged on the sewing material in the material feed direction on the feed side, is formed, then a compressed stitch portion Q1 the second seam Q is formed, then stitches of a major part of the sting Q2 the second seam extending from a stitch end position of the compacted section Q1 the second seam Q continues to be formed to a position on a line perpendicular to the Nähgutvorschubrichtung, which is consistent with a stitch end position of the compressed stitch section P1 the first seam P intersects, and then main stitch sections P2 . Q3 , which is based on a stitch end position of the compressed stitch section P1 the first seam P and the main stitch portion Q2 the second seam Q that is already formed, be formed (see 11 ).

That is, if the CPU 151 executes the control program, the control device functions as a control means.

In the following description, stitches of a condensed stitch portion are stitches that are at a fine stitch pitch (for example, 1 mm or less) and stitches of a main stitch portion are normal stitches formed by feeding a stitched fabric at a normal stitch pitch (for example, 1 mm or more) become. Here, the normal stitches are referred to as stitches of a main stitch portion to be different from the stitches of the above-described compressed stitch portion.

METHOD FOR SEAMING FIRST SECTIONS OF SEAMS

Next, with reference to 11 and 12 a sewing method described to form the compacted stitches P1 . Q1 their front end positions in Nähgutvorschubrichtung at the front end portions of the two seams P . Q are different from each other, with the stitches of the binding machine 100 be formed.

In the following description, if not particularly mentioned, the cloth feed direction is represented by the drive of the clamp mechanism 1 one direction (the direction F in 1 . 9 . 11 . 13 . 15 . 17 ), in which a fabric from the inlet side of the puncture point of the needle 20a is advanced to the drain side.

When a sewing start switch or the like is pressed by an operator, the CPU performs 151 the control device 5 the control program through, causing the drive of the main shaft motor 101 , the air cylinder for Nadelstangenverschwenkung and the clamping mechanism 1 is controlled to form the seams. Further, in the following description, the description will be made assuming that the binding machine 100 is configured such that at the first energy supply or at the end of a predetermined bordering operation by both needles, if both needle bars 20 always with the needle bar holder 51 are engaged.

If, as in 11 and 12 shown the CPU 151 executes the control program, moves the CPU 151 first the electromagnetic valve 90 of the air cylinder for Nadelstangenverschwenkung in the drive state to the switching element 81 to move and a needle (right needle) of the two needles 20a to stop in an upper part (step S1 ).

At this point, the CPU staggered 151 the electromagnetic valve 90 of the air cylinder for Nadelstangenverschwenkung in the drive state, whereby the switching member 81 is moved so that the abutment projection 81a above the driven link 62 is arranged in the needle bar to be stopped 20 is provided, and then leaves the main shaft motor 101 rotate in the opposite direction to the sewing machine main shaft 52 in the opposite direction in circulation, and then leaves the main shaft motor 101 to stop in a state in which the projection 81a is caused at an upper part of the driven link 62 abut the driven link 62 depress. As a result, pull the coupling member 61 , the needle bar 20 corresponds to the right needle, back, and the needle to be used for sewing 20a is switched from both needles to a single needle (left needle).

The reason why the lead 81a to the upper part of the driven link 62 by opposite twisting of the sewing machine main shaft 52 brought in this way, is that an engagement or a detachment of the needle bar 20 with / from the needle bar holder 51 is performed without making an excess stitch formation in a fabric.

Next, the CPU determines 151 , whether or not a formation of the condensed stitch section P1 the first seam P has finished, where, when two seams are formed, the front ends of the seams are located upstream in the fabric feeding direction, based on the length of a compacted stitch portion to be formed by each of the needles and the fabric feed amount of a stitch pattern start position, as a stitch image information in the EEPROM 154 is stored (step S2 ). In addition, the determination of a stitching position is made by the CPU 151 in the following description performed on the basis of the stitch information in the EEPROM 154 is stored in a similar manner as above, and a Nähensschubschubmaßes from a stitch pattern start position, if nothing special is mentioned. If here the CPU 151 has determined that the training of the condensed stitch section P1 not finished (step S2 : NO), moves the CPU 151 the main shaft motor 101 and the clamping motor 102 the clamping mechanism 1 in drive, causing the compressed stitch section P1 the first seam P is formed (step S3 ).

Here is the condensed stitch section P1 the first seam P formed by making a stitch formation in order of stitch points n0 . n1 . n2 . n3 . n5 is trained.

During the condensed stitch section P1 is formed, the CPU returns to the step S2 back and determines whether or not the formation of the condensed stitch section P1 finished. Then the stitching of the condensed stitch section P1 continued until the CPU 151 determines that the training of the condensed stitch section P1 finished.

If the CPU 151 in step S2 has determined that the formation of the condensed stitch section P1 finished (step S2 : YES) leads the CPU 151 the switchover of a needle to be used. In addition, the determination of the end of the stitching of the condensed stitch section P1 executed when the CPU 151 the number of Needle position signal outputs from a needle position detector, not shown, count after stitching into a fabric is started.

If here the needle 20a used to sew the stitch formation in the compressed stitch sections Q1 the second seam Q Switched to a single needle (right needle), from a single needle (left needle), switching can not be made simultaneously. Therefore, the switching can be performed in the following sequence.

Immediately after the left needle from the puncture point n5 begins to go up, causes the CPU 151 the driving state of the electromagnetic valve 90 of the air cylinder for needle bar switching to the abutment projection 81a of the switching element 81 via the release pen 66 to move it and the two needles 20a to allow it to move up and down by advancing the coupling member 61 at the arrival of the needle bar 20 at top dead center, allowing suturing through both needles (step S4 ).

Then, when a pair of (not shown) Fadenaufnehmerhebeln of the sewing machine body 12 reaches the top dead center, the CPU stops 151 the drive of each part, such as the main shaft motor 101 , and stops the suturing temporarily (step S5 ).

Next, the stitching of the first seam P is interrupted, and the fabric is in the reverse feed direction (direction B in 11 ) by driving the clamping motor 102 the clamping mechanism 1 advanced so that a stitch point to the starting position (a stitch point n6 in 11 ) of the condensed stitch section Q1 the second seam Q without moving the needle up and down (step S6 : Idling feed step).

Then the needle 20a which is to be used for suturing, switched from both needles to a single needle (right needle) (step S7 ). In addition, when the clamping motor 102 the clamping mechanism 1 is driven, hereinafter simply described that the clamping mechanism 1 is driven.

At the time of switching to a single needle (right needle) from both needles to a needle (left needle) of the two needles 20a stopping in an upper part puts the CPU 151 the electromagnetic valve 20 of the air cylinder for needle bar switching to the drive state, whereby the switching element 81 is moved so that the abutment projection 81a above the driven link 62 is placed in the needle bar 20 the left, to be stopped needle is provided, and then the main shaft motor 101 rotates in the reverse direction, and the main shaft motor 101 is stopped in a state in which the abutment projection 81a is caused at an upper part of the driven link 62 abut the driven link 62 depress. As a result, the coupling member pulls 61 , which is the needle bar 20 the left needle corresponds, back, and the needle 20a , which is to be used for sewing, is switched from both needles to a single needle (right needle).

Next, the CPU determines 151 , whether or not the training of the condensed stitch section Q1 the second seam Q finished (step S8 ). If here the CPU 151 has determined that the formation of the condensed stitch section Q not finished (step S8 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the compressed stitch section Q the second seam Q is formed (step S9 ).

Here is the condensed stitch section Q1 the second seam Q by performing a stitching in order of stitch points n6 . n7 . n8 . n9 . n10 . n11 is performed.

During the condensed stitch section Q1 is formed, the CPU returns 151 to the step 8th back and determines whether or not the formation of the condensed stitch section Q1 finished. Then the stitching of the condensed stitch section Q1 continued until the CPU 151 determines that the training of the condensed stitch section Q1 finished.

In step S8 then determines if the CPU 151 has determined that the formation of the condensed stitch section Q1 finished (step S8 : YES), the CPU 151 whether or not the formation of the main engraving section Q2 the second seam, which differs from the stitch end position of the compressed stitch section Q1 continues to a position on a line perpendicular to the fabric feed direction, which coincides with the stitch end position of the compressed stitch section P1 the first seam intersects (step S10 ). This determination is in particular performed when the CPU 151 determines whether or not a work feed amount Lq after the formation of the second seam Q has started, a feed rate D1 + Lp has been achieved by summing a fabric feed direction deviation D1 at the front end parts of the two seams P . Q that before in the EEPROM 154 and a cloth advancing direction length Lp of the condensed stitch portion P in the front end portion of the first seam P (Lq ≥ D1 + Lp). If here the CPU 151 has determined that the Formation of the main engraving section Q1 not finished (step S10 : NO) causes the CPU 151 the drive of the main shaft motor 101 and the clamping mechanism 1 , whereby the main stitch section Q2 is formed (step S11 ).

Here is the main stitch section Q2 the second seam Q formed by making a stitch formation in order of bullet points n11 , 12, n13 is performed.

During the main stitch section Q2 is formed, the CPU returns 151 to the step S10 back and determines whether or not the formation of the main stitch section Q2 finished. Then, the formation of the main stitch section Q2 continued until the CPU 151 determines that the formation of the main stitch section Q2 finished (step S10 : YES).

If the CPU 151 in step S10 has determined that the formation of the main engraving section Q2 finished (step S10 : YES), causes the CPU 151 the driving state of the electromagnetic valve 90 of the air cylinder for needle bar switching to the switching element 81 to move so that the abutting part 81a of the switching element 81 above the release pen 66 is arranged, and to it the two needles 20a to allow it to move up and down, causing a sewing process through the two needles 20a is allowed (step S12 ).

Next, the CPU determines 151 whether or not the training of the main engraving section P2 starting from the stitch end position n5 of the condensed stitch section P1 the first seam P continues, and the formation of the main stitch remaining portion Q3 Starting from the main stitch section Q2 the second seam Q off continues, is completed (step S13 ).

If here the CPU 151 has determined that the training of the main stitch sections P2 . Q3 not finished (step S13 : NO) causes the CPU 151 the clamping mechanism 1 in addition, the material to be sewn in the material feed direction (direction F in 11 ), whereby at the same time stitches of the main stitch section P2 the first seam P and the main stitch remaining portion Q3 the second seam Q be formed by both needles. This is the first main stitch section P2 the first seam P and the main stitch portion Q3 the second seam Q formed by the fact that at the same time a stitch formation at the Stichpunkte n5 . n13 be formed, and that then a stitch formation in orders of n14 . n15 is carried out.

While the main stitch sections P2 . Q3 be formed, the CPU returns 151 to the step S13 back and determines whether or not the formation of the main stitch sections P2 . Q3 finished. Then the training of the main stitch sections P2 . Q3 continued until the CPU 151 determines that the training of the main stitch sections P2 . Q3 finished.

When in step S13 the CPU 151 has determined that the training of the main stitch sections P2 . Q3 finished (step S13 : YES), the CPU stops 151 the fabric feed by the clamping mechanism 1 which completes the main process.

According to the binding machine 100 causes the control device 5 the CPU 151 in addition, the drive of the main shaft motor 101 , the electromagnetic valve 90 the air cylinder for needle bar switching and the clamping mechanism 1 to control. If the front end parts of the two seams P . Q are formed, thereby the compressed stitch section P1 the first seam P , whose front end position is arranged upstream in the Nähgutvorschubrichtung formed, and then the compressed stitch sections Q1 the second seam Q educated. Next, the controller forms 5 the main stitch section Q2 starting from a stitch end position of the compressed stitch section Q1 the second seam Q up to a position on a line which is perpendicular to the Nähgutvorschubrichtung and with the Stichbildeendposition of the compressed stitch section P1 the first seam P intersects. Next are the main stitch sections P2 . Q3 , which is based on the stitch end position of the compressed stitch section P1 the first suture and the main suture portion Q2 the second seam Q that is already formed, continue training.

As described above, the fact that not the entire second seam Q , which precedes the drain side in the Nähgutvorschubrichtung, is made to a compressed stitch portion, but a part of the second stitch to the main stitch sections Q2 is made, the condensed stitch section Q1 the second seam Q not longer than necessary.

As a result, even in a case where the front end positions of the two seams P . Q differ in Nähgutschubschub from each other, the Nähfinish be made beautiful.

MODIFIED METHOD FOR SEAMING FIRST SEAMING

The invention is not limited to the above embodiments. For example, stitches can be used at the beginning of suturing using a method such as 13 and 14 represented, trained. Next, with reference to 13 and 14 a stitching method for training compacted stitches R1 . T1 whose front end positions in the material advancing direction at the front end portions of the two seams R, T are different from each other described.

In addition, in the following description, the above description of FIG 11 and 12 to adapt the description on the assumption that a front end position of the first seam R in the cloth feed direction is further on the feed side than a front end position of the second seam T.

In particular, in ROM 152 a control program which drives the main shaft motor 101 , the air cylinder for needle bar switching of the single needle stop mechanism 120 and the clamping mechanism 1 stored such that when the front end portions of the two seams R, T are formed, a compressed stitch portion T1 the second seam T is formed, that then a main stitch section T2 is formed, which is based on a Stichbildeendposition of the compressed stitch section T1 the second seam T continues to a position on a line which is perpendicular to the Nähgutvorschubrichtung and with a Stichbildeendposition of the compressed stitch section R1 the first seam R intersects, and then the compressed stitch section R1 the first seam R is formed, and then main stitch sections R2 . T3 are formed, starting from a stitch end position of the compressed stitch section R1 the first seam R and the main stitch portion T2 the second seam T, which is already formed, continue to be formed. Then, if the CPU 151 the control program executes stitches formed by the following method.

If, as in 13 and 14 shown the CPU 151 executes the control program, first moves the CPU 151 the electromagnetic valve 90 of the air cylinder for needle bar switching to the drive state to the switching element 81 to move and a needle (left needle) of the two needles 20a to stop in an upper part (step S21 ). At this point, the CPU staggered 151 the electromagnetic valve 90 of the air cylinder for needle bar switching to the drive state, whereby the switching element 81 is moved so that the abutting part 81a above the driven link 82 is arranged in the needle bar to be stopped 20 is provided, and then the main shaft motor 101 is reversed in circulation, and the main shaft motor 101 is stopped in a state in which the projection 81a is brought to, at an upper part of the driven link 61 abut the driven link 62 depress. As a result, the coupling member pulls 61 , the needle bar 20 the right needle corresponds, back, and the needle 20a which is to be used for sewing is switched from both needles to a single needle (right needle).

Next, the CPU determines 151 , whether or not the training of the condensed stitch section T1 the second seam T is completed (step S22 ). If here the CPU 151 has determined that the training of the condensed stitch section T1 not finished (step S22 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the compressed stitch section T1 the second seam T is formed while the fabric is being fed in the fabric feed direction (direction F in FIG 1 . 9 . 11 . 13 . 15 and 17 ) is advanced (step S23 ).

Here is the condensed stitch section T1 the second seam T formed by the stitch formation in order of stitch points w0 . w1 . w2 . w3 . w4 . w5 is performed.

During the condensed stitch section T1 is formed, the CPU returns 151 to the step S22 back and determines whether or not the formation of the condensed stitch section T1 finished. Then the training of the condensed stitch section T1 continued until the CPU 151 decides that the formation of stitches of the condensed stitch section T1 finished.

If the CPU 151 in step S22 has determined that the training of the condensed stitch section T1 finished (step S22 : YES), the CPU determines 151 whether or not the training of the main engraving section T2 the second seam T, which is based on a stitch end position of the compressed stitch portion T1 continues to a position on a line which is perpendicular to the fabric feed direction and with the Stichbildeendposition of the compressed stitch section R1 the first seam R intersects, is finished (step S24 ). This determination is carried out in particular if the CPU 151 determines whether or not a Nähungsvorschubmaß Lt after the formation of the seam T was started, a feed rate D2 + Lr obtained by summing a work feed direction deviation T2 at the front ends of the two seams R, T, which in advance in the EEPROM 154 is stored, and a Nähgutvorschubrichtungslänge Lr of the compressed stitch section R1 in the front end portion of the seam R (Lt ≥ D2 + Lr). If here the CPU 151 has established that the training of the main engraving section T2 not finished (step S24 : NO) moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the driving state, whereby the main stitch section T2 is formed (step S25 ).

Here is the main stitch section T2 characterized in that a stitch formation in order of stitch points w5 . w6 . w7 he follows.

During the main stitch section T2 is formed, the CPU returns 151 to the step S24 back and determines whether or not the formation of the main stitch section T2 finished. Then, the formation of the main stitch section T2 continued until the CPU 151 determines that the formation of the main engraving section T2 finished (step S24 : YES).

If the CPU 151 in step S24 has established that the training of the main engraving section T2 is completed (step S24 : YES), the CPU is running 151 the switchover of a needle to be used.

If here the needle 20a to be used for sewing, when switched to a single needle (left needle) from a single needle (right needle), the switching can not be performed simultaneously. Therefore, the switching can be performed in the following order.

Immediately after the left needle starts, from the stitch point w5 going up, puts the CPU 151 the electromagnetic valve 90 of the air cylinder for the needle bar switching to the drive state, to the abutment projection 81a of the switching element 81 via the release pen 66 to move, and it to the two needles 20a to allow itself by advancing the coupling member 61 by the arrival of the needle bar 20 move up and down at top dead center, allowing sewing with both needles (step S26 ).

Then, when a pair (not shown) Fadenaufnehmerhebel the sewing machine body 12 reaching a top dead center stops the CPU 151 the drive of each part, for example, the main shaft motor 101 , and temporarily stops sewing (step S27 ).

Next, the formation of the main stitch section T2 the second seam T terminates and the fabric is in a reverse feed direction (direction B in 13 ) by driving the clamping mechanism 1 in the reverse direction so advanced that a stitch point to the starting position (a stitch point w8 in 13 ) of the condensed stitch section R1 the first seam R passes without moving the needle up and down (step S28 : Idling feed step).

Then, the needle to be used for the sewing process becomes 20a Switched from both needles to a single needle (left needle) (step S29 ).

At the time of switching from both needles to a single needle (left needle), the CPU is displaced 151 to the other needle (right needle) of the two needles 20a to stop in the upper part, the electromagnetic valve 90 of the air cylinder for the needle bar switching to the drive state, whereby the switching element 81 is moved so that the abutting part 81a above the driven link 62 is placed in the needle bar 20 the right needle to be stopped is provided, and then the main shaft motor 101 is rotated backwards and the main shaft motor is stopped in a state in which the abutment projection 81 is caused at an upper part of the driven link 62 abut the driven link 62 depress. As a result, the coupling member pulls 61 , the needle bar 20 the other needles (right needle) corresponds, back, and the needle 20a , which is to be used for sewing, is switched from both needles to a single needle (left needle).

Next, the CPU determines 151 , whether or not the training of the condensed stitch section R1 the first seam R is finished (step S30 ). If here the CPU 151 has established that the training of the condensed stitch section R1 not finished (step S30 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the compressed stitch section R1 is formed (step S31 ).

Here is the condensed stitch section R1 trained, by performing a stitch formation in order of Stichpunkte w8 . w9 . w10 . w11 . w12 . w13 ,

During the condensed stitch section R1 is formed, the CPU returns 151 to the step S30 back and determines whether or not the formation of the condensed stitch section R1 finished. Then the training of the condensed stitch section R1 continued until the CPU 151 determines that the training of the condensed stitch section R1 finished.

If the CPU 151 in step S30 has established that the training of the condensed stitch section R1 is completed (step S30 : YES), puts the CPU 151 the electromagnetic valve 90 of the air cylinder for the needle bar switching to the drive state to the switching element 81 to move so that the abutting part 81a of the switching element 81 above the release pin 66 is arranged, and to it the two needles 20a to allow it to move up and down, causing a stitching with the two needles 20a is allowed (step S32 ).

Next, the CPU determines 151 , whether or not the formation of the main engraving section T3 starting from the stitch end position of the main stitch section T2 the second seam T, which is already formed, continues, and the formation of the main stitch portion R2 starting from the stitch end position of the condensed stitch section R1 the first seam R continues, is finished.

If here the CPU 151 has stated that the training of the main stitch sections T3 . R2 is not completed (step S33 : NO) causes the CPU 151 the clamping mechanism 1 in addition, the material to be sewn in the material feed direction (direction F in 13 ), whereby at the same time stitches of the main stitch section T3 the second seam T and the main stitch remaining portion R2 of the first seam R are formed with two needles (step S34 ). Here are the main stitch section T3 and the main stitch section R2 formed by simultaneously performing a stitch formation at the stitch points w7 . w13 , and then a stitch in the order of w14 . w15 executed.

While the main stitch sections T3 . R2 be formed, the CPU returns 151 to the step S31 back and determine whether or not the formation of the main stitch sections T3 . R2 finished. Then the training of the main stitch sections T3 . R2 continued until the CPU 151 determines that the formation of the main stitch sections T3 . R2 finished.

If the CPU 151 in step S33 has stated that the training of the main stitch sections T3 . R2 finished (step S33 : YES) stops the CPU 151 the fabric feed by the clamping mechanism 1 which completes the main process.

Even in such a binding machine controls, when the front end portions of the two seams R, T are formed, the control device 5 the drive of the main shaft motor 101 , the electromagnetic valve 90 , the air cylinder for the needle bar switch and the clamping mechanism 1 , This will make the compressed stitch section T1 the second seam T formed, the main stitch portion T2 is then formed up to a position on a line which is perpendicular to the Nähgutvorschubrichtung and with the Stichbildeendposition of the compressed stitch section R1 the first seam R intersects, and then the compressed stitch portion R1 the first seam R formed. Next are the main stitch sections R2 . T3 , which is based on the stitch end position of the compressed stitch section R1 continue the first seam R, and the main stitch section T2 the second seam T, which is already formed formed.

As described above, by not making the entire second seam T, the material that advances in the fabric advancing direction advances into a compacted stitch portion, but by having a part of the second seam in the main stitch portion T2 formed, the compressed stitch section T1 the second seam T no longer than necessary.

As a result, even in a case where the front end positions of the two seams R, T deviate in the work feed direction, a work finish can be made beautiful.

METHOD FOR SEWING LAST SEAM SECTIONS

Next, with reference to 15 and 16 a sewing method for forming condensed stitches A2 . A3 using the binding machine 100 described, with the rear end positions of the compacted stitches A2 . A3 in the material feed direction at the rear end portions of the two seams A, C are different from each other.

In addition, in the following description, in order to address the above description 11 to 14 assuming that a rear end position of the first seam C (or K) is located further in the cloth feed direction on the upstream side than a rear end position of the second seam A (or H).

In particular, in ROM 152 a control program stored which drives the main shaft motor 101 , the single needle stop mechanism 120 and the clamping mechanism 1 controls, so that when the rear end portions of the two seams A, C are formed, a main stitch portion A1 the second seam A, a main stitch portion C1 the first seam C, which extends to a position on a line which is perpendicular to the Nähgutvorschubrichtung and with a stitch end position of the main stitch section A1 The second seam, when then formed, cuts a main stitch remaining portion C2 the first seam C and a condensed stitch portion C3 arising from a stitch end position of the main stitch section C2 are then formed, and a condensed stitch section A2 originating from the sewing end portion of the main stitch section A1 continues the second seam A, is then formed. Then, if the CPU 151 the control program continues to stitches formed in the subsequent method.

When a sewing start switch or the like is pressed by an operator, the CPU performs 151 the control device 5 the control program, causing the drive of the Main shaft motor 101 , the electromagnetic valve 90 of the air cylinder for needle bar switching, the single needle stop mechanism 120 and the clamping mechanism 1 be controlled to form the seams. Furthermore, in the following description, it is assumed that the sewing machine 100 is configured such that at the first power supply or at the end of a predetermined wrapping operation by both needles, when both needle bars 20 always engaged with the needle bar holder 51 are allowed.

If, as in 15 and 16 represented, the CPU 151 executes the control program, first moves the CPU 151 the electromagnetic valve 90 of the air cylinder for needle bar switching to the drive state to the switching element 81 to pivot it and the two needles 20a to allow you to move up and down (step S41 ).

At this point, the CPU staggered 151 the electromagnetic valve 90 of the air cylinder for the needle bar switching in the drive state to move the switching member such that the abutment projection 81a above between the driven links 82 arranged in both needle bars 20 are provided.

Next, the CPU determines 151 whether or not the training of the main engraving section A1 the second seam A of the two seams A, C is completed (step S42 ). If here the CPU 151 has established that the training of the main engraving section A1 is not completed (step S42 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the main stitch sections A1 . C1 the two seams A, C are formed (step S43 ).

Here are the main stitch sections A1 . C1 of the two seams A, C formed by having a stitch formation in order of stitch points b0 . b1 . b2 is performed.

While the main stitch sections A1 . C1 be formed, the CPU returns 151 to the step 42 back and determines whether or not the formation of the main stitch section A1 finished. Then, the training becomes the main stitch section A1 . C1 continued until the CPU 151 determines that the formation of the main engraving section A1 finished.

If the CPU 151 in step S42 has established that the training of the main engraving section A1 finished (step S42 : YES), puts the CPU 151 the electromagnetic valve 90 of the air cylinder for needle bar switching of the single needle stop mechanism 120 in the drive state to the switching element 81 to move such that the abutment projection 81a of the switching element 81 above the driven link 62 is arranged in the (right) to be stopped needle bar 20 is provided, and around it the left needle 20a to allow it to move up and down, allowing a stitching process through the left needle 20a is allowed (step S44 ).

Next, the CPU determines 151 whether or not the formation of the main stitch rest section C2 the first seam C is completed (step S45 ). If here the CPU 151 has determined that the formation of the main engraving section C2 not finished (step S45 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the driving state, whereby the main stitch section C2 is formed (step S46 ).

Here is the main stitch section C2 characterized in that a stitch formation in order of stitch points b2 . b3 . b4 is performed.

During the main stitch section C2 is formed, the CPU returns 151 to the step S45 back and determines whether or not the formation of the main stitch section C2 finished. Then, the formation of the main stitch section C2 continued until the CPU 151 determines that the formation of the main engraving section C2 is completed (step S45 : YES).

If the CPU 151 in step S45 determines that the formation of the main engraving section C2 finished (step S45 : YES), the CPU determines 151 , whether or not the training of the condensed stitch section C3 the first seam C is completed (step S47 ). If the CPU 151 here found that the training of the condensed stitch section C3 not finished (step S47 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the compressed stitch sections C3 is formed (step S48 ).

Here is the condensed stitch section C3 characterized in that a stitch formation in order of stitch points b4 . b5 . b6 . b7 . b8 . b9 is performed.

During the condensed stitch section C3 is formed, the CPU returns 151 to the step S47 back and determines whether or not the formation of the condensed stitch section C3 finished. Then the training of the condensed stitch section C3 continued until the CPU 151 determines that the training of the condensed stitch section C3 is completed (step S47 : YES).

When in step S47 the CPU 151 has established that the training of the condensed stitch section C3 is completed (step S47 : YES) switches the CPU 151 a needle to be used from a left needle to a right needle.

If here is the needle to use for sewing 20a On a single needle (right needle), starting from a single needle (left needle) is switched, the switching can not be made simultaneously. Therefore, the switching can be done in the following order.

Immediately after the left needle from the stitch point b9 off starts to go up, puts the CPU 151 the electromagnetic valve 90 the air cylinder of the single needle stop mechanism 120 in the drive state, the abutment projection 81a of the switching element 81 above the release pen 66 to arrange, and to the two needles 20a to allow, by the advancement of the coupling member 61 by the arrival of the needle bar 20 at the top dead center to move up and down, allowing sewing with both needles (step S49 ).

Then, when a pair of (not shown) Fadenaufnehmerhebeln of the sewing machine body 12 reaches a top dead center, stops the CPU 151 the drive of each part, for example, the main shaft motor 101 , and stops the sewing process temporarily (step S50 ).

Next is the formation of the condensed stitch section C3 the first seam C terminates and the fabric is fed in a backward direction (direction B in FIG 15 ), by driving the clamping mechanism 1 such that a stitch point to the starting position (a stitch point b2 in 15 ) of the condensing stitch section A2 the second seam A passes without moving the needle up and down (step S51 : Idling feed step).

Then, the needle to be used for the sewing process becomes 20a Switched from both needles to a single needle (right needle) (step S52 ).

At the time of switching from both needles to a single needle (right needle), the CPU is displaced 151 to a needle (left needle) of the two needles 20a to stop in an upper part, the electromagnetic valve 90 of the air cylinder for the needle bar switching to the drive state, whereby the switching element 81 is moved so that the abutment projection 81a above the driven link 62 is placed in the needle bar 20 the left needle to be stopped is arranged, and then the main shaft motor 101 is reversed in the reverse direction, and the main shaft motor 101 is stopped in a state in which the abutment projection 81a is brought to, at an upper part of the driven link 62 abut the driven link 62 depress. As a result, the coupling member pulls 61 , the needle bar 20 the left needle corresponds, back, and the needle 20a , which is to be used for the sewing process, is switched from both needles to a single needle (right needle).

Next, the CPU determines 151 , whether or not the training of the condensed stitch section A2 the second seam A is completed (step S53 ). If here the CPU 151 has established that the training of the condensed stitch section A2 not finished (step S53 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the compressed stitch section A2 the second seam A is formed (step S54 ).

Here is the condensed stitch section A2 characterized in that a stitch formation in order of stitch points b2 . b10 . b11 . b12 . b13 . b14 is performed.

During the condensed stitch section A2 is formed, the CPU returns 151 to the step S53 back and determines whether or not the formation of the condensed stitch section A2 finished. Then the training of the condensed stitch section A2 continued until the CPU 151 determines that the training of the condensed stitch section A2 completed (step S53 : YES).

When in step S53 the CPU 151 has established that the training of the condensed stitch section A2 finished (step S53 : YES), the CPU stops 151 the fabric feed by the clamping mechanism 1 which completes the main process.

According to the binding machine 100 causes the control device 5 the CPU 151 the control of the drive of the main shaft motor 101 , the single needle stop mechanism 120 and the clamping mechanism 1 , When the rear end portions of the two seams A, C are formed thereby, the main stitch portion becomes A1 the second seam A and the main stitch portion C1 the first seam C is formed, which extends to a position on a line which is perpendicular to the Nähgutvorschubrichtung and with the Stichbildeendposition the main stitch section A1 the second seam A intersects. Next, the controller forms 5 the main stitch section C2 the first seam C from. Next, the controller forms 5 the condensed stitch section C3 starting from the stitch end position of the main stitch section C2 the first seam continues. Next, the controller forms 5 the condensed stitch section A2 starting from the stitch end position of the main stitch section A1 the second seam A continues.

Therefore, this is because not the entire condensed stitch section C3 the first seam C is produced, the rear end position in the material feed direction on the inlet side in a compressed stitch portion in accordance with the second compressed stitch portion A2 protrudes, but a part of the first seam in the main stitch section C2 is produced, the condensed stitch section C3 the seam C is not longer than necessary.

As a result, even in a case where the rear end positions of the two seams A, C deviate in the cloth feed direction, the sewing finish can be made beautiful.

MODIFIED METHOD FOR SEAMING LAST SEAM SECTIONS

Besides, the invention is not limited to the above embodiments. For example, stitches may be formed at the end of the sewing process by a method as described in U.S. Pat 17 and 18 is shown. Next, with reference to 17 and 18 a stitching method for the formation of condensed stitches H2 . K3 described, the rear end positions are in the Nähgutvorschubrichtung at rear parts of the two seams H, K from each other.

In detail: a control program, which drives the main shaft motor 101 , the air cylinder for needle bar switching of the single needle stop mechanism 120 and the clamping mechanism 1 controls is in ROM 152 stored such that when the rear end portions of the two seams H, K are formed, then a main stitch portion H1 the second seam H, and a major stitch portion K1 the first seam K extending to a position on a line which is perpendicular to the Nähgutvorschubrichtung and with a Stichbildeendposition the main stitch section H1 the second seam H intersects, and then formed: a condensed stitch portion H2 starting from a stitch end position of the main stitch section H1 the second seam H continues, a main stitch remaining portion K2 starting from a stitch end position of the main stitch part K1 the first seam K, which is already formed, and a condensed stitch portion K3 starting from a sewing end portion of the main stitch section K2 continues. If then the CPU 151 If the control program is running, stitches are made using the following method.

As in 17 and 18 shown, then offset when the CPU 151 running the control program, the CPU 151 first the electromagnetic valve 90 the air cylinder for needle bar switching to the drive state to the switching element 81 to move it and the two needles 20a to allow you to move up and down (step S61 ).

At this point, the CPU staggered 151 the electromagnetic valve 90 of the air cylinder for needle bar switching to the drive state to the switching element 81 to move such that the abutment projection 81a above between the driven links 62 arranged in both needle bars 20 are provided.

Next, the CPU determines 151 whether or not the training of the main engraving section H1 the second seam H of the two seams H, K is completed (step S62 ). If here the CPU 151 has established that the training of the main engraving section H1 not finished (step S62 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the main stitch sections H1 . K1 the two seams H, K are formed (step S63 ).

Here are the main stitch sections H1 . K1 formed the two seams H, K, by exercising a stitch formation in order of Stichpunkte d0 . d1 . d2 ,

While the main stitch sections H1 . K1 be formed, the CPU returns 151 to the step S62 back and determines whether or not the formation of the main stitch section H1 finished. Then the training of the main stitch sections H1 . K1 continued until the CPU 151 determines that the formation of the main engraving section H1 is completed (step S62 : YES).

When in step S62 the CPU 151 has established that the training of the main engraving section H1 is completed (step S62 : YES), puts the CPU 151 the electromagnetic valve 90 of the air cylinder for Nadelstangenverschwenkung in the drive state to the switching element 81 to move such that the abutment projection 81a of the switching element 81 above the driven link 62 is arranged in the (left) to be stopped needle bar 20 is provided, and around it the right needle 20a to allow it to move up and down, causing a suturing with the right needle 20a is allowed (step S64 ).

Next, the CPU determines 151 whether or not the training of the condensed Stich section H2 the second seam H is finished (step S65 ). If here the CPU 151 has established that the training of the condensed stitch section H2 is not completed (step S65 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, so that the compressed stitch section H2 is formed (step S66 ).

Here is the condensed stitch section H2 by making a stitch formation in order of stitch points d2 . d3 . d4 . d5 . d6 . d7 is performed.

During the condensed stitch section H2 is formed, the CPU returns 151 to the step S65 back and determines whether or not the formation of the condensed stitch section H2 finished. Then the training of the condensed stitch section H2 continued until the CPU 151 determines that the training of the condensed stitch section H2 is completed.

If the CPU 151 in step S65 has established that the training of the condensed stitch section H2 is completed (step S65 : YES), the CPU switches 151 a needle to be used from a right needle to a left needle.

If here is the needle to use for sewing 20a switching to a single needle (left needle) from a single needle (right needle), switching can not occur simultaneously. Therefore, the switching can be performed in the following order.

Immediately after the right needle starting from the stitch point d7 starts to move up, puts the CPU 151 the electromagnetic valve 90 of the air cylinder for needle bar switching to the drive state, to the abutment projection 81a of the switching element 81 via the release pen 66 to move around and to the two needles 20a to allow it to move up and down by advancing the coupling member 61 by the arrival of the needle bar 20 at the top dead center, allowing sewing with both needles (step S67 ).

Then, when a pair of (not shown) Fadenaufnehmerhebeln of the sewing machine body 12 reaches a top dead center, stops the CPU 151 the drive of each part, for example, the main shaft motor 101 , and temporarily stops sewing (step S68 ).

Next is the formation of the condensed stitch section H2 the second seam H ends, and the fabric is in the reverse feed direction (direction B in 17 ) by driving the clamping mechanism 1 advanced so that a stitch point to the starting position (a stitch point d2 in 17 ) of the main stitch section K2 a (left) seam K passes without the needle up and down to move (step S69 : Idling feed step).

Then, the needle to be used for sewing becomes 20a Switched from both needles to a single needle (left needle) (step S70 ).

At the time of switching from both needles to a single needle (left needle) to a needle (left needle) of the two needles 20a stopping in an upper part puts the CPU 151 the electromagnetic valve 90 the air pressure cylinder for the needle bar switching to the drive state, whereby the switching element 81 is moved so that the abutment projection 81a above the driven link 62 is placed in the needle bar 20 the other needle (right needle) to be stopped is provided, and then the main shaft motor 101 in the reverse direction to circulate and around the main shaft motor 101 to stop in a state in which the abutment projection 81a is caused at an upper part of the driven link 62 abut the driven link 62 depress. As a result, the coupling member pulls 61 , the needle bar 20 a needle (right needle), back, and the needle 20a , which is to be used for sewing, is switched from both needles to a single needle (left needle).

Next, the CPU determines 151 whether or not the training of the main engraving section K2 the first seam K is completed (step S71 ). If here the CPU 151 has established that the training of the main engraving section K2 not finished (step S71 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, so that the main stitch section K2 is formed (step S72 ).

Here is the main stitch section K2 by making a stitch formation in order of stitch points d2 . d8 . d9 is performed.

During the main stitch section K2 is formed, the CPU returns 151 to the step S71 back and determines whether or not the formation of the main stitch section K2 finished. Then, the formation of the main stitch section K2 continued until the CPU 151 determines that the formation of the main engraving section K2 is completed (step S71 : YES).

If the CPU 151 in step S71 has established that the training of the main engraving section K2 is completed (step S71 : YES), puts the CPU 151 determines whether or not the formation of the condensed stitch section K3 starting from the stitch end position of the main stitch section K2 the first seam K continues, is finished (step S73 ). If here the CPU 151 has established that the training of the condensed stitch section K3 not finished (step S73 : NO), moves the CPU 151 the main shaft motor 101 and the clamping mechanism 1 in the drive state, causing the compressed stitch section K3 is formed (step S74 ).

Here is the condensed stitch section K3 characterized in that a stitch formation in order of stitch points d9 . d10 . d11 . d12 . d13 . d14 is performed.

During the condensed stitch section K3 is formed, the CPU returns 151 to the step S73 back and determines whether or not the formation of the condensed stitch section K3 finished. Then the training of the condensed stitch section K3 continued until the CPU 151 determines that the training of the condensed stitch section K3 is completed.

When in step S73 the CPU 151 has established that training the condensed stitch section K3 is completed (step S73 : YES), the CPU stops 151 the fabric feed by the clamping mechanism 1 which completes the main process.

According to the binding machine 101 causes the control device 5 the CPU 151 , the drive of the main shaft motor 101 , the single needle stop mechanism 102 and the clamping mechanism 1 to control. Thereby, when the rear end portions of the two seams H, K are formed, the main stitch portion is formed H1 the second seam H and the main stitch portion K1 , the first seam K, which extends to a position on a line which is perpendicular to the fabric advancing direction and intersects with the stitch end position of the second seam H. Next, the controller forms 5 the condensed stitch section H2 starting from the stitch end position of the main stitch section H1 the second seam H continues. Next, the controller forms 5 the main stitch rest section K2 starting from the stitch end position of the main stitch section K1 the first seam K, which is already formed, continues. Next, the controller forms 5 the condensed stitch section K3 starting from the stitch end position of the main stitch section K2 the first seam K continues.

As described above, by having a part of the first seam K in the cloth feed direction on the upstream side in the main stitch portion K2 Vorverläuft is produced, the compressed stitch section K3 the seam K is no longer needed.

As a result, even in a case where the rear end positions of the two seams in the cloth advancing direction differ from each other, the sewing finish can be made beautiful.

OTHER EMBODIMENTS

Besides, the invention is not limited to the above embodiments. In the above-described respective embodiments shown in FIG 11 to 18 are shown, for example, compressed stitch portions are formed on front end portions or rear end portions, with a Nähgutvorschub by a clamping mechanism as a fine feed. However, when compacted stitch portions are formed, it is also possible to stop the cloth feed by the clamp mechanism and compressed stitch portions merely by pivoting by driving the needle swing motor 105 form, or form dense stitch portions in that the Nadelverschwenkung and the Nähgutvorschub are used together. Furthermore, in the single needle stopper mechanism of the above embodiments, switching of both needles is performed by a pneumatic cylinder for needle bar switching. Therefore, when switching from a single needle (right needle) to a single needle (right needle), it is necessary to perform switching to a single needle after switching to both needles once. For example, it is as in JP 4-52160 B2 discloses, also possible to perform the stopping of the needles each by independent air cylinder. This makes it unnecessary to perform switching to both the needles and can improve the workability even though the number of parts increases.

Claims (6)

A bordering machine (100) comprising: two needle bars (20) for respectively holding two needles (20a); a needle vertical movement mechanism (50) driven by a main shaft motor (101) for moving the two needle bars (20) up and down; a single needle stop mechanism (120) configured to separately stop each of the needles (20a) in an upper position; a bordering device (2) holding a bordering patch (WP) on a main thread; a clamp mechanism (1) having a pair of clamps (15) descending on respective sides of the framing device (2) for pressing and feeding the main crop and the containment pad (WP) and advancing the main crop and the containment mark (WP) in a work feed direction (F); and control means (5) for controlling the main shaft motor (101), the single needle stopper mechanism (120), and the clamp mechanism (1) to form first and second seams (P, Q) whose front end positions (n0, n6) in the cloth feed direction (F ) are sewn together, whereby the main sewing material and the binding patch (WP) are sewn together, characterized in that when forming front end portions of the first and second seams (P, Q) the control means (5) drives the main shaft motor (101), the single needle stop mechanism (120) ) and the clamping mechanism (1) to form the successive sections in the following order: i) a compacted stitch portion (P1) of the first seam (P) whose front end position (n0) is on an upstream side in the fabric feeding direction (F) (ii) a densified stitch portion (Q1) of the second seam (Q); iii) a main stitch portion (Q2) of the second seam (Q); advancing from a stitch end position (n11) of the condensed stitch portion (Q1) of the second seam (Q) to a position (n13) on a line perpendicular to the cloth feed direction (F) and having a stitch end position (n5) of the condensed stitch portion (P1) of the first seam (P), and iv) a main stitch portion (P2) of the first seam (P) extending from a stitch end position (n5) of the condensed stitch portion (P1) of the first seam (P) and a main stitch remaining portion (Q2) of the second seam (Q) continuing from the stitch end position (n13) of the main stitch portion (Q2) of the second seam (Q). A bordering machine (100) comprising: two needle bars (20) for respectively holding two needles (20a); a needle vertical movement mechanism (50) driven by a main shaft motor (101) for moving the two needle bars (20) up and down; a single needle stop mechanism (120) configured to separately stop each of the needles (20a) in an upper position; a bordering device (2) holding a bordering patch (WP) on a main thread; a clamping mechanism (1) having a pair of clamps (15) descending on respective sides of the hemming device (2) for pressing and holding the main crop and hemming patch (WP) and containing the main crop and the hemming patch (W); WP) advances in a Nähgutvorschubrichtung (F); and control means (5) for controlling the main shaft motor (101), the single needle stopper mechanism (120) and the clamping mechanism (1) to form first and second seams (R, T) whose front end positions (w8, w0) in the cloth advancing direction (F ), whereby the main sewing material and the tucking patch (WP) are sewn together, characterized in that when forming front end portions of the first and second seams (R, T) the control means (5) drives the main shaft motor (101), the single needle stop mechanism (120) and controlling the clamping mechanism (1) to form the successive sections in the following order: i) a compacted stitch portion (T1) of the second seam (T) whose front end position (w0) is on a downstream side in the fabric feeding direction (F) ii) a major stitch portion (T2) of the second seam (T) extending from a stitch end position (w5) of the compacted stitch ts (T1) of the second seam (T) from continuing to a position (w7) on a line perpendicular to the fabric advancing direction (F) and coinciding with a stitch end position (w13) of a compacted stitch portion (R1) of the first seam (R iii) the condensed stitch portion (R1) of the first seam (R), and iv) the main stitch portion (R2) of the first seam (R) extending from the stitch end position (w13) of the condensed stitch portion (R1) of the first seam (R), and a main stitch remaining portion (T3) of the second seam (T) continuing from the stitch end position (w7) of the main stitch portion (T2) of the second seam (T). The binding machine (100) after Claim 1 or 2 further comprising a needle swing mechanism driven by a needle swing motor (105) for pivoting the two needle bars (20) in the cloth feed direction (F), the control means (5) including the needle swing motor (105) in addition to the main shaft motor (101). , the single-needle stopper mechanism (120) and the clamp mechanism (1), to form the front end portions of the first and second seams (P, R; Q, T). A bordering machine (100) comprising: two needle bars (20) for respectively holding two needles (20a); a needle vertical movement mechanism (50) driven by a main shaft motor (101) for moving the two needle bars (20) up and down; a single needle stop mechanism (120) configured to separately stop each of the needles (20a) in an upper position; a bordering device (2) holding a bordering patch (WP) on a main thread; a clamping mechanism (1) having a pair of clamps (15) descending on respective sides of the hemming device (2) for pressing and holding the main crop and hemming patch (WP) and containing the main crop and the hemming patch (W); WP) advances in a Nähgutvorschubrichtung (F); Control means (5) for controlling the main shaft motor (101), the single needle stopper mechanism (120) and the clamping mechanism (1) to form first and second seams (C, A) whose rear end positions (b9, b14) are in the work feed direction (F) different from each other, whereby the main sewing material and the binding patch (WP) are sewn together, characterized in that in forming rear end portions of the first and second seams (C, A) the control means (5) the main shaft motor (101), the Einzelelnadelstoppmechanismus (120) and controlling the clamp mechanism (1) to form the successive sections in the following order: i) a main stitch section (A1) of the second seam (A) whose rear end position (b14) is on a downstream side in the cloth feed direction (F) with respect to FIG rear end position (b9) of the first seam (C) and a second main stitch portion (C1) of the first seam (C) extending to a position (b2) on a line which is s is perpendicular to the cloth feed direction (F) and intersects with a stitch end position (b2) of the main stitch portion (A1) of the second seam (A), ii) a main stitch remaining portion (C2) of the first seam (C) extending from the stitch end position (b2) iii) a condensed stitch portion (C3) of the first seam (C) continuing from a stitch end position (b4) of the main stitch remaining portion (C2) of the first seam (C) , and iv) a condensed stitch portion (A2) of the second seam (A) continuing from the stitch end position (b2) of the main stitch portion (A1) of the second seam (A). A bordering machine (100) comprising: two needle bars (20) for respectively holding two needles (20a); a needle vertical movement mechanism (50) driven by a main shaft motor (101) for moving the two needle bars (20) up and down; a single needle stop mechanism (120) configured to separately stop each of the needles (20a) in an upper position; a bordering device (2) holding a bordering patch (WP) on a main thread; a clamping mechanism (1) having a pair of clamps (15) descending on respective sides of the hemming device (2) for pressing and holding the main crop and hemming patch (WP) and containing the main crop and the hemming patch (W); WP) advances in a Nähgutvorschubrichtung (F); Control means (5) for controlling the main shaft motor (101), the single needle stopper mechanism (120) and the clamp mechanism (1) to form first and second seams (K, H) whose rear end positions (d14, d7) in the work feed direction (F) different from each other, whereby the main sewing material and the binding patch (WP) are sewn together, characterized in that in forming rear end portions of the first and second seams (K, H) the control means (5) the main shaft motor (101), the Einzelelnadelstoppmechanismus (120) and controlling the clamping mechanism (1) to form the successive sections in the following order: i) a main stitch portion (H1) of the second seam (H) whose rear end position (d7) is on a downstream side in the fabric feeding direction (F) with respect to rear end position (d14) of the first seam (K) and a major stitch portion (K1) of the first seam (K) extending to a position (d2) on a line perpendicular to to the fabric feed direction (F) and intersects with a stitch end position (d2) of the main stitch portion (H1) of the second seam (H), ii) a condensed stitch portion (H2) of the second seam (H) extending from the stitch end position (d2) iii) a main stitch remaining portion (K2) of the first seam (K) continuing from the stitch end position (d2) of the main stitch portion (K1) of the first seam (K), and iv) a condensed stitch portion (K3) of the first seam (K) continuing from a stitch end position (d9) of the main stitch remaining portion (K2) of the first seam (K). The binding machine (100) after Claim 4 or 5 , further comprising a needle swing mechanism driven by a needle swing motor (105) for pivoting the two needle bars (20) in the cloth feed direction (F), the control means (5) driving the needle swing motor (101) in addition to the main shaft motor (101 ), the single needle stopper mechanism (120), and the clamp mechanism (1) to form the rear end portions of the first and second seams (C, K; A, H).

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