JP2000084272A - Embroidery sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an embroidery sewing machine capable of accelerating an embroidery speed further, naturally executing embroidery even to a thick object to be sewn such as leather and preventing the generation of a practical problem even in the case of forming the stitch of a large swing width in the embroidery sewing machine for executing the embroidery while moving a needle bar in an xy direction. SOLUTION: The moving direction of forked rods 151 and 153 engaged with a needle swing cams 167 and 169 rotated once in two rotations by an upper shaft 5 is converted to reciprocating motion in an (x) direction by needle swing width adjusters 189 and 191 for adjusting an angle by AC servo motors 205 and 207 and transmitted as the reciprocating motion in the xy direction through a Δx slide plate 103 and a Δy 90-degree direction conversion block 133 to a needle bar frame 121. Also, a throat plate/shuttle moving mechanism 300 is synchronized with the (x) direction movement, a throat plate 7 and a shuttle 9 are moved in the (x) direction and the unequal speed rotation mechanism 500 of the shuttle adjusts the position and timing of the encounter of a cone point and a needle corresponding to (y) direction movement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery sewing machine, and more particularly to an embroidery sewing machine capable of executing embroidery while moving a needle bar in xy directions.

[0002]

2. Description of the Related Art In a conventional embroidery sewing machine, for example, when embroidery is to be performed by satin stitch, embroidery is performed while moving a needle drop point by moving an embroidery frame zigzag. This movement of the embroidery frame must be performed between the time the needle comes out of the cloth and the next time it is pierced. For this reason, if the length of one stitch becomes large, it takes time to move the embroidery frame, and the rotational speed of the upper shaft must be suppressed to a correspondingly low amount, which has caused a problem in productivity.

In order to solve this problem, Japanese Patent Publication No. 3-52
In the embroidery sewing machine proposed in Japanese Patent Application Publication No. 998, a needle bar support for slidably supporting the needle bar is provided with respect to the sewing machine frame.
By supporting the needle bar support in the xy directions using two stepping motors so as to be capable of swinging in the y direction, a configuration is possible in which a satin stitch can be formed without zigzag movement of the embroidery frame. It has been disclosed.

[0004]

However, the above-mentioned Tokuhei 3
In the embroidery sewing machine proposed in Japanese Patent Application Laid-Open No. 52998/1990, the needle bar support is oscillated by rotating the stepping motor forward and backward for each stitch, and the rotation speed of the upper shaft is limited by the performance of the stepping motor. Problem. In addition, it is necessary to synchronize the relationship between the drive timing of the stepping motor and the rotation angle of the spindle motor, and this also causes a problem that the rotation speed of the spindle motor cannot be increased too much. In particular, the longer the stitch of one stitch, the longer it takes to swing the needle bar, and a problem arises in that it is not possible to achieve a sufficiently high speed.

Further, in the embroidery sewing machine proposed in Japanese Patent Publication No. 3-52998, the needle pierces the work to be skewed obliquely, and embroidery is performed on a thick and hard work such as leather. Another problem is that bending stress is generated in the needle.

[0006] Furthermore, since the needle is stabbed diagonally, there is another problem that it is difficult to align the position of the encounter between the needle point of the shuttle and the needle.

As described above, in the conventional embroidery sewing machine, embroidery can be performed while moving the needle bar in the xy directions, but the embroidery speed has not been sufficiently increased.
Further, since a needle is stabbed obliquely, various problems may occur when forming a stitch having a large swing width.

In view of the above, the present invention provides an embroidery sewing machine which performs embroidery while moving the needle bar in the xy directions. An object of the present invention is to provide an embroidery sewing machine that can perform embroidery without difficulty and does not cause a practical problem even when forming a seam having a large swing width.

[0009]

An embroidery sewing machine according to the present invention, which has been made to achieve the above object, has a needle bar which is moved up and down in the z-axis direction in conjunction with the rotation of an upper shaft. And a needle bar supported by the sewing machine frame so as to be horizontally movable in an arbitrary direction along an xy plane orthogonal to the z-axis while the needle bar is supported so as to be vertically movable in the z-axis direction. While the support and the needle bar perform up and down movement in the z-axis direction twice, the rotation of the upper shaft can be used as a driving force to reciprocate the needle bar support once along the xy plane. The needle plate and the lower needle are moved so that the needle thread and the lower thread are stitched in conjunction with the reciprocation of the needle bar support by the needle bar support reciprocating member and the needle bar support reciprocating member. An encounter adjusting mechanism for adjusting the position and timing of the encounter between the yarn hook and the needle is provided (hereinafter referred to as “(1)繍 sewing machine "that.).

According to the embroidery sewing machine of (1), the needle bar support is horizontally moved in any direction along the xy plane by the needle bar support reciprocating member, and the needle plate, the shuttle and the needle are controlled by the encounter adjusting mechanism. The position and timing of the encounter with the thread are adjusted so that the upper thread and the lower thread are stitched. Therefore, the needle always stabs the sewing object vertically, so that no excessive force is applied to the needle even if the swing width is increased, and the position and timing of the encounter between the blade point and the needle can be kept substantially constant. Therefore, the seam can be reliably formed. The needle bar support reciprocating member uses the rotation of the upper shaft as a driving force. Therefore, the needle bar support is xy
It can reciprocate at high speed along a plane. In addition,
In using the driving force of the upper shaft, as an example, the rotational motion is converted into reciprocating motion by a mechanical mechanism using a gear, an eccentric cam, etc., and the x-axis of the needle bar support by the needle bar support reciprocating member It can be configured to perform reciprocating motion in the direction and the y-axis direction.

Here, in a more specific embroidery sewing machine, in the embroidery sewing machine of the above (1), when the x-axis is set to a direction along the upper axis, the needle bar support is moved x with respect to the sewing machine frame. A first slide member slidably supported in the axial direction and a second slide member slidably supported in the y-axis direction with respect to the first slide member; The needle bar is supported so as to be vertically movable in the z-axis direction, and the needle bar support reciprocating member is driven by the rotation of the upper shaft to reciprocate the first slide member in the x-axis direction. It is characterized by comprising an x-direction reciprocating member and a y-direction reciprocating member driven by the rotation of the upper shaft to reciprocate the second slide member in the y-axis direction (hereinafter, referred to as “ This is called (2) embroidery sewing machine. " .

According to the embroidery sewing machine of (2), the needle bar support is constituted by the first and second slide members as described above. Then, by sliding the first slide member in the x-axis direction by the x-direction reciprocating member,
Embroidery can be performed on the workpiece while the needle bar is reciprocated in the x-axis direction. In addition, by sliding the second slide member in the y-axis direction by the y-direction reciprocating member, embroidery can be performed on the workpiece while the needle bar reciprocates in the y-axis direction. The first slide member is slid in the x-axis direction by the x-direction reciprocating member, and the second slide member is slid in the y-axis direction by the y-direction reciprocation member.
Embroidery on the sewing object can be performed while reciprocating in an oblique direction with respect to the axis y. In this manner, embroidery can be performed while the needle bar support is reciprocated in any direction along the xy plane.

More specifically, in the embroidery sewing machine of (2), the second slide member is moved by x with respect to a needle bar crank rod for converting the rotation of the upper shaft into the movement in the z-axis direction. A needle bar hugging support member engaged and supported movably in the axial direction, and a needle bar hugger engaged and supported movably in the y-axis direction with the needle bar fixed to the needle bar hugging support member. And a needle bar frame that supports the needle bar fixed to the needle bar holder so as to be movable in the z-axis direction (hereinafter referred to as “embroidery sewing machine of (3)”).

According to the embroidery sewing machine of (3), when the first slide member reciprocates in the x-axis direction by the x-direction reciprocating member, the second slide member also reciprocates in the x-axis direction. At this time, the needle bar holding support member is engaged and supported so as to be movable in the x-axis direction with respect to the needle bar crank rod.
The needle bar is vertically reciprocated in the z-axis direction by the upper shaft while reciprocating in the x-axis direction. When the second slide member reciprocates in the y-axis direction by the y-direction reciprocating member, the needle bar also reciprocates in the y-axis direction. At this time, since the needle bar hugging is supported by the needle bar hugging supporting member so as to be movable in the y-axis direction, the needle bar is also vertically moved in the z-axis direction via the needle bar crank rod. Can be made. Here, the needle bar holding support member includes a shaft member having a length capable of maintaining the engagement support state with the needle bar crank rod even when the needle bar is reciprocated by the maximum needle swing width in the x-axis direction; An engagement support member provided at the tip of the member and extending in the y-axis direction so as to maintain the engagement support state with the needle bar holder even if the needle bar is reciprocated by the maximum needle swing width in the y-axis direction; Can be configured by

More specifically, in the embroidery sewing machine of (3), the x-direction reciprocating member transmits its own reciprocating motion in the x-axis direction to the first slide member. The first slide member is configured as a member that reciprocates in the x-axis direction, and is attached to the needle bar frame so as to be slidable with respect to a support shaft fixed so as to extend in the x-axis direction. A slide block supported by the sewing machine frame so as to be movable in the y-axis direction by a shaft extending in the axial direction, and engaged with the slide block via a long hole formed obliquely to the x-axis and the y-axis; And a direction changing block for moving the slide block in the y-axis direction when the y-direction reciprocating member moves in the x-axis direction. By transmitting the redirecting block, characterized by configuring the second slide member as a member for reciprocating the y-axis direction (hereinafter,. Referred to as "(4) embroidery sewing machine").

According to the embroidery sewing machine of (4), the x-direction reciprocating member and the y-direction reciprocating member are each configured as a member capable of reciprocating in the x-axis direction using the rotation of the upper shaft as a driving force. I have. Then, when the x-direction reciprocating member reciprocates in the x-axis direction, the first slide member performs reciprocation in the x-axis direction. On the other hand, when the y-direction reciprocating member
When reciprocating in the axial direction, the reciprocating motion in the x-axis direction is converted into reciprocating motion in the y-axis direction by the direction conversion block and transmitted to the slide block. Since the slide block is slidably mounted on a support shaft provided on the needle bar frame and extending in the x-axis direction, the reciprocating motion in the y-axis direction is transmitted to the needle bar frame via the support shaft. I do. As a result, in a state where the needle bar is supported by the needle bar frame so as to be vertically movable in the z-axis direction, the needle bar corresponds to the reciprocating motion of the x-direction reciprocating member and the y-direction reciprocating member in the xy plane in any direction. Can reciprocate.

More specifically, in the embroidery sewing machine of (4), the first eccentric cam rotating the x-direction reciprocating member once every two rotations of the upper shaft; A first connecting member having one end engaged with the first eccentric cam and the other end connected to the first slide member; and guiding movement of the first connecting member by the first eccentric cam. ,
By changing the movement direction of the first connection member to adjust the amount of movement of the first slide member in the x-axis direction,
A x-direction needle swing width adjusting member that adjusts the needle bar swing width in the x-axis direction, wherein the y-direction reciprocating member rotates at a rate of once for every two rotations of the upper shaft. An eccentric cam, a second connecting member having one end engaged with the second eccentric cam and the other end connected to the direction conversion block, and the second connecting member formed by the second eccentric cam. To adjust the amount of movement of the needle bar in the y-axis direction by changing the direction of movement of the second connecting member to adjust the amount of movement of the direction conversion block in the x-axis direction. And a directional needle swing width adjusting member (hereinafter referred to as “(5) embroidery sewing machine”).

According to the embroidery sewing machine of (5), by changing the angles of the x-direction needle swing width adjustment member and the y-direction needle swing width adjustment member, the needle bar frame is moved to the xy by using the rotational force of the upper shaft as a drive source. It can be reciprocated in an arbitrary direction in an arbitrary direction within a plane. Therefore, the speed at which the needle bar is swung in any direction in the xy plane is determined by the rotation speed of the upper shaft, and there is a problem that the rotation speed of the upper shaft is restricted by swinging the needle bar in the xy plane. Does not occur. Therefore, the embroidery speed can be increased.

More specifically, in the embroidery sewing machine of (5), the x-direction needle swing width adjusting member is connected to the first AC
The tilt angle can be changed by the servomotor, and the guide direction of the first connecting member is changed in accordance with the change in the tilt angle to thereby adjust the swing width of the needle in the x-axis direction. The y-direction needle swing width adjusting member is connected to the second
The tilt angle can be changed by the AC servomotor described above, so that the guide direction of the second connecting member is changed in accordance with the change in the tilt angle to adjust the swing width of the needle in the y-axis direction. (Hereinafter, referred to as
It is called "(6) embroidery sewing machine". ).

As described above, by adopting the configuration in which the angle of the x-direction needle swing width adjusting member and the y-direction needle swing width adjusting member is changed by the AC servomotor, the swing width of the needle bar and the direction in which the needle bar swings are changed. The speed can be changed at a high speed, and the speed can be increased even in embroidery while changing the swing width of the needle bar and the direction in which the needle bar is swung.

More specifically, in each of the embroidery sewing machines (2) to (6), the encounter adjusting mechanism is provided with the x
A needle plate / hook moving mechanism that is linked with a direction reciprocating member and that reciprocates the needle plate and the lower thread shuttle in the x-axis direction in synchronization with the reciprocation of the needle bar support by the x-direction reciprocating member; , The y
The upper and lower threads are sewn up by forcibly changing the rotation angle of the shuttle in synchronization with the reciprocation of the needle bar support by the y-direction reciprocating member. A non-constant speed rotation mechanism of the shuttle for adjusting the timing of the encounter between the blade and the needle so that the blade of the shuttle meets the needle within the range of the needle, and the needle plate is formed on the needle plate. ,
And a needle hole having a long hole extending in the y-axis direction (hereinafter referred to as “(7) embroidery sewing machine”).

According to the embroidery sewing machine of (7), when the needle bar is reciprocated in the x-axis direction with a predetermined swing width by the x-direction reciprocating member, the needle plate / shuttle moving mechanism moves the x-direction reciprocating member. The needle plate and the shuttle for the lower thread are reciprocated in the x-axis direction in synchronism with the reciprocation of the needle bar in the x-axis direction by. Further, when the needle bar is reciprocated in the y-axis direction by a predetermined swing width by the y-direction reciprocating member, the non-constant speed rotation mechanism of the shuttle moves the needle bar in the y-axis direction by the y-direction reciprocating member. By forcibly changing the rotation angle of the hook in synchronization with the needle, the needle point of the hook and the needle are adjusted so that the needle point of the hook comes into contact with the needle within the area of the needle so that the upper and lower threads are stitched. Adjust the timing of the encounter. The needle plate has a needle hole formed of a long hole extending in the y-axis direction. Therefore, even if the needle bar is reciprocated horizontally in an arbitrary direction and an arbitrary swing width in the xy plane, the position and timing of the encounter between the needle plate and the shuttle and the needle are appropriately determined by this specific encounter adjusting mechanism. And the upper thread and the lower thread are stitched securely, and a stitch is formed on the workpiece by embroidery.

More specifically, in the embroidery sewing machine of (7), the rotation of the upper shaft is transmitted, and a first lower shaft having a first screw gear and a first screw gear are provided. A second lower shaft having a second screw gear engaged with the second lower shaft and supported to be movable in the x-axis direction with respect to the sewing machine frame; and a first spur gear attached to the second lower shaft. Second
A third lower shaft having a third spur gear, a fourth lower shaft having a fourth spur gear engaged with a third spur gear attached to the third lower shaft, and the fourth spur gear A fifth spur gear that is engaged with the sewing machine frame, and is movable in the x-axis direction with respect to the sewing machine frame. The shuttle for the lower thread is fixed to the tip, and moves integrally with the needle plate in the x-axis direction. And a fifth lower shaft operably engaged with the needle plate / hook moving mechanism, which is linked to the x-direction reciprocating member via a link mechanism, and is configured to engage the fourth and fifth spur gears. While maintaining the combined state, the fifth lower shaft is configured to move in the same direction by the same amount with respect to the movement of the needle bar support in the x-axis direction. An engagement state of the first and second screw gears and the first and second spur gears, which is linked to the y-direction reciprocating member via a link mechanism. While maintaining, y of the needle bar support
The second lower shaft is configured to move in the x-axis direction in accordance with the amount of movement in the axial direction.
It is called "(8) Embroidery sewing machine". ).

According to the embroidery sewing machine of (8), when the needle bar is swung in the x-axis direction by the x-direction reciprocating member, the needle plate and shuttle which are linked to the x-direction reciprocating member via the link mechanism. The moving mechanism moves the fifth lower shaft in the same direction by the same amount with respect to the movement of the needle bar support in the x-axis direction while maintaining the engagement state of the fourth and fifth spur gears, The movement of the needle in the x-axis direction and the movement of the needle plate and the shuttle in the x-axis direction can be synchronized. Further, when the needle bar is swung in the y-axis direction by the y-direction reciprocating member, the non-constant speed rotation mechanism of the shuttle linked to the y-direction reciprocating member via the link mechanism is used. By moving the second lower shaft in the x-axis direction according to the amount of movement of the needle bar support in the y-axis direction while maintaining the engaged state of the screw gear and the first and second spur gears, 1, changing the rotation angle of the shuttle by forcibly advancing or delaying the meshing position of the second screw gear,
It is possible to appropriately adjust the timing of the encounter between the needle and the sword.

More specifically, an embroidery sewing machine that can achieve the object of the present invention includes an upper shaft that is rotated by a main shaft motor, and an upper shaft that is attached to a tip of the upper shaft and controls the rotation of the upper shaft by z. A needle bar crank rod that converts the motion into an up-down motion in the axial direction;
A needle bar hugging support member engaged and supported movably in the axial direction, and a needle bar hugger engaged and supported movably in the y-axis direction with the needle bar fixed to the needle bar hugging support member A needle bar frame for supporting the needle bar fixed to the needle bar holder so as to be vertically movable in the z-axis direction, and a needle bar frame for supporting the needle bar frame so as to be movable in the y-axis direction. A first slide member movably supported in the x-axis direction, and a slidably mounted support shaft fixed to the needle bar frame so as to extend in the x-axis direction; By a shaft extending in the direction
A slide block supported on the sewing machine frame so as to be movable in the axial direction, and engaged with the slide block through a slot formed obliquely with respect to the x-axis and the y-axis; A direction change block for moving the slide block in the y-axis direction when moving in the direction, a first screw gear fixed to the upper shaft, and a second screw gear engaged with the first screw gear. A camshaft arranged orthogonally to the upper shaft so as to rotate at a rate of one rotation to two rotations of the upper shaft, and a first eccentric cam attached to the camshaft;
A first bifurcated rod having a bifurcated portion at one end for engaging with the first eccentric cam, and having a first motion transmitting shaft connected to the first slide member at the other end; By guiding the movement of the first forked rod by the eccentric cam and changing the movement direction of the first forked rod,
The first motion transmission shaft transmitted by the first motion transmission shaft;
Adjusting the amount of movement of the slide member in the x-axis direction to adjust the amount of swinging of the needle bar in the x-axis direction; and an inclination angle of the x-axis direction swinging amount adjusting member. A first AC servomotor for changing the angle of rotation, a second eccentric cam attached to the camshaft, and a forked portion which engages with the second eccentric cam at one end, and at the other end, the direction conversion block. A second bifurcated rod having a second motion transmitting shaft to be coupled thereto, and guiding movement of the second bifurcated rod by the second eccentric cam to change the direction of movement of the second bifurcated rod. By adjusting the amount of movement of the direction conversion block in the x-axis direction by the second motion transmission shaft, a y-direction needle swing width adjusting member that adjusts the needle swing width in the y-axis direction of the needle bar, y-direction needle swing width adjustment member A second AC servomotor that changes the angle of rotation, a first lower shaft that receives the rotation of the upper shaft and has a third screw gear, and a fourth lower shaft that engages with the third screw gear. A second lower shaft having a screw gear and supported to be movable in the x-axis direction with respect to the sewing machine frame; and a second lower shaft engaged with a first spur gear attached to the second lower shaft.
A third lower shaft having a third spur gear, a fourth lower shaft having a fourth spur gear engaged with a third spur gear attached to the third lower shaft, and the fourth spur gear A fifth spur gear that engages with the sewing machine, is movable in the x-axis direction with respect to the sewing machine frame, has a lower thread hook fixed to the tip, and is integrally movable with the needle plate in the x-axis direction. A fifth lower shaft engaged with the first rod, the needle bar being linked to the first forked rod via a link mechanism, and maintaining the engagement state of the fourth and fifth spur gears. A throat plate / hook moving mechanism for moving the fifth lower shaft in the same direction by the same amount with respect to the movement of the support in the x-axis direction; 3, while maintaining the engagement state of the fourth screw gear and the first and second spur gears,
A non-constant speed rotation mechanism of a shuttle that moves the second lower shaft in the x-axis direction according to an amount of movement in the axial direction;
An embroidery sewing machine having a needle hole formed of a long hole extending in the y-axis direction can be given (hereinafter, referred to as “(9) embroidery sewing machine”).

According to the embroidery sewing machine of (9), the first and second
By changing the inclination of the x-direction needle swing width adjusting member and the y-direction needle swing width adjusting member by the AC servomotor, the amount of movement of the first and second forked rods in the x-axis direction is adjusted. The amount of movement of the frame in the xy directions can be controlled. Then, the rotation of the first screw gear attached to the upper shaft is transmitted to the second screw gear to rotate the camshaft, and the first and first gears attached to the camshaft are rotated.
Through the second eccentric cam, these bifurcated rods reciprocate in the x-axis direction once every two rotations of the upper shaft, so that the needle bar frame is moved in the x-axis direction and the y-axis direction. The speed of the rotation is determined by the rotation speed of the upper shaft, and the needle bar can be swung at a high speed in an arbitrary direction within the xy plane with an arbitrary swing width. Further, the timing for starting the movement of the needle bar support in the xy directions can determine a certain condition with respect to the rotation angle of the upper shaft depending on the shapes of the first and second eccentric cams. By configuring the lower shaft side as described above, the needle plate and the shuttle can be moved in the x-axis direction in synchronization with the movement of the needle bar in the x-axis direction, and the needle hole extends in the y-direction. Since the needle hole is provided, the needle can be accurately inserted into the needle hole even if the needle bar is moved in the xy directions. In addition, the rotation angle of the shuttle can be forcibly advanced or delayed in synchronization with the movement of the needle bar in the y-axis direction. The timing of the encounter between the sword tip and the needle can be appropriately adjusted, for example, by adjusting to the timing of rising to the height position. Therefore, a stitch can be reliably formed even if the needle is largely shaken in the x-axis direction and the y-axis direction.

[0027]

Embodiments of the present invention will be described below in more detail with reference to the drawings. FIG. 1 shows a perspective view of the entire drive mechanism of the embroidery sewing machine 1. This embroidery sewing machine 1
Is characterized in that the needle bar 3 is moved in the x-axis direction (upper shaft 5
Needle bar support 100 mounted horizontally movably with respect to a sewing machine frame (not shown) so as to be movable in the axial direction of the sewing machine) and in the y-axis direction (a direction orthogonal to the upper shaft 5). Needle plate / hook moving mechanism 300 capable of moving needle plate 7 and shuttle 9 in the x-axis direction in synchronization with movement of body 100 in the x-axis direction.
And the shuttle 9 corresponding to the movement of the needle bar support 100 in the y-axis direction.
And an unequal-speed rotating mechanism 500 for changing the rotation speed of the shuttle. Regarding the needle bar support 100, the needle plate / hook moving mechanism 300 and the non-constant speed rotation mechanism 500 of the hook, the drive mechanism of the embroidery sewing machine 1 will be described first, as the detailed structure and the like will be described later. .

The embroidery sewing machine 1 has a structure in which the upper shaft 5 is driven by a spindle motor 10 to perform a sewing operation, similarly to a normal embroidery sewing machine. Upper shaft 5
As shown in the overall perspective view of FIG. 1, the exploded perspective view of the upper shaft portion of FIG. 2, and the enlarged perspective view of the upper shaft portion of FIG. It is supported horizontally against. The rotational force of the main shaft motor 10 is transmitted to the upper shaft 5 via a gear 13, a timing belt 14, and a timing pulley 15.
A flexible coupling 1 is provided at the rear end of the upper shaft 5.
The encoder 19 is attached via the. Further, a bevel gear 23 for transmitting rotation to the vertical shaft 21 is fixed to the upper shaft 5. The vertical shaft 21 is supported vertically by bearings 24 and 25 with respect to a sewing machine frame (not shown), and bevel gears 26 and 27 are provided at upper and lower ends.
It has.

A link balance 31 is provided at the front end of the upper shaft 5.
The balance crank 33 for rotating the shaft is fixed. The link balance 31 is supported by a sewing machine frame (not shown) by a balance support shaft 35, and is eccentrically attached to the balance crank 33.
It is mounted eccentrically on the balance crank 33 via 7.

The upper end of a needle bar crank rod 39 is attached to the needle bar crank 37. At the lower end of the needle bar crank rod 39, as shown in an exploded perspective view of the needle bar support portion in FIG. 4, a needle bar hanger 41 horizontally moves the needle bar hanger in the x-axis direction and moves in the y-axis direction. The needle bar holder △ x △ y slide shaft 43 that movably supports the needle bar holder 及 び x △ y slide shaft 43 and the needle bar guide 45 that supports the needle bar holder △ x △ y slide shaft 43 movably in the z-axis direction. I have.

The needle bar guide 45 is provided for the needle bar crank rod 3.
9 has a cylindrical portion 45a inserted into the hole 39a at the lower end thereof, and a base portion 45b which is slidably fitted into a guide groove 47a of a needle bar guide slide block 47 for guiding the vertical movement of the needle bar guide 45. are doing. Here, the needle bar guide slide block 47 is fixed to a sewing machine frame (not shown), and another one is provided by a needle bar guide slide block adjusting plate 49 for holding when the needle bar guide 45 is attached. It is configured to form one guide groove.

Needle bar holder x x y slide shaft 43
Has a shaft 43a inserted into the cylindrical portion 45a of the needle bar guide 45 so as to be movable in the x-axis direction, and a cylindrical portion 43b into which the needle bar cover 41 is inserted so as to be movable in the y-axis direction. The upper and lower surfaces of the cylindrical portion 43b are formed with long holes 43c and 43d for moving the needle bar 3 in the y-axis direction. The needle bar holder 41 is formed of a columnar member, and has a through hole 41a into which the needle bar 3 is inserted. The needle bar holder 41 is inserted into the cylindrical portion 43b of the needle shaft holder △ x △ y slide shaft 43 so as to be movable in the y-axis direction. The through hole 41 of the needle bar holder 41
The needle bar 3 is inserted into and fixed to the a through the long holes 43c and 43d of the needle bar holding 抱 x △ y slide shaft 43 as shown in the figure.

Next, the needle bar support 100 will be described. As shown in the exploded perspective view of FIG. 4 and the enlarged perspective views of FIGS. 5 and 6, the needle bar support 100 is fixed to the
1 and a △ x slide plate 1 guided by the 方向 x direction slide plate support block 101 for movement in the x-axis direction.
03.

As a structure for guiding the sliding motion of the Δx slide plate 103, upper and lower projecting portions 101a, 101 of the Δx direction slide plate support block 101 are provided.
△ x slide ways 104 and 105 are fixed to b. On the other hand, on the x slide plate 103 side, these △
The #x slide ways 106 and 107 having the same configuration are fixed so as to be slidably fitted between the x slide ways 104 and 105.

A central portion of the rear end of the Δx slide plate 103 is provided with a Δx slide shaft (hereinafter referred to as an “x direction slide motion transmission shaft”) for transmitting the slide motion in the x-axis direction to the Δx slide plate 103. .) 111
Are fixed while being horizontally supported by the bearing 113. The bearing 113 is fixed to a sewing machine frame (not shown).

Further, the first and second Δy slide shafts 115, 115 extending in the y direction are provided on the Δx slide plate 103.
Bearings 117 and 118 for supporting 116 are fixed. Then, the boss portions 117a, 11 of these bearings 117, 118 are provided on the △ x slide plate support block 101.
8a for inserting and supporting the movable member 8a so as to be movable in the x direction.
1c and 101d are formed.

On the other hand, the needle bar 3 is supported by the needle bar frame 121 so as to be vertically movable in the z-axis direction. And
Attached to the needle bar frame 121 in parallel with the needle bar 3.
The first and second Δy slide shafts 115 and 116 are fixed to the needle bar frame 121 by the y slide shaft fixing shaft 123.

Further, the needle bar frame 121 has a third Δy slide shaft 125 extending on the opposite side to the first and second Δy slide shafts 115 and 116, and a Δx slide shaft.
The slide shaft 127 is mounted so as to be supported so as to be slidable in the x direction. Reference numeral 129 denotes a block portion 125a of the third Δy slide shaft 125.
△ x slide shaft 127,
The △ x slide shaft 127 can be smoothly slid in the x direction with respect to the third △ y slide shaft 125.
It is for supporting. Reference numeral 131 denotes a bearing for supporting the third Δy slide shaft 125 so as to be movable in the y direction, which is fixed to a sewing machine frame (not shown).

In the block portion 125a of the third △ y slide shaft 125, a △ y 90 ° direction conversion block 133 having a long hole 133a formed at an angle of 45 ° with respect to the x axis and the y axis is provided with a screw 135. Mounted through. The long hole 1 of the △ y 90-degree direction conversion block 133
Reference numeral 33a is used to convert the movement in the x direction by 90 degrees to the movement in the y direction and transmit the converted movement to the block portion 125a of the third Δy slide shaft 125, as described later. . For this reason, the above-mentioned screw 135 is
It is fastened and fixed so that it can move freely in the long hole 133a. This △ y 90-degree direction conversion block 13
3 has a Δy for transmitting a sliding motion in the x direction.
A slide shaft (hereinafter, referred to as a “y-direction slide motion transmission shaft”) 141 is fixed while being horizontally supported by a bearing 143. This bearing 143 is also fixed to the sewing machine frame (not shown).

Here, the principle of moving the needle bar frame 121 in the needle bar support 100 in the x direction will be described.

When the x-direction slide motion transmission shaft 111 moves by ± Δx in the x direction, the Δx slide plate 103
Moves by ± ｘx in the x direction. Accordingly, this △ x
First and second Δy slide shafts 11 attached to slide plate 103 via bearings 117 and 118
5, 116 also move in the x direction by ± だ け x.
As a result, the first and second Δy slide shafts 11
The movement of ± Δx in the x direction of 5,116 is transmitted to the Δy slide shaft fixed shaft 123, and the needle bar frame 121
In the direction ± Δx. Accordingly, the needle bar 3 is moved by ± 移動 x in the x-direction together with the needle bar holder 41 and the needle bar holder △ x △ y slide shaft 43. At this time, the needle bar holding △ x △ y slide shaft 43
The length of the shaft 43a is such that the needle bar frame 121 does not fall out of the cylindrical portion 45a of the needle bar guide 45 when the needle bar frame 121 is moved by a maximum amount (− △ xmax) in the −x direction in the illustrated coordinate system. Conversely, the needle bar frame 121 is +
Needle bar 3 and needle bar crank rod 3 so as not to hinder the movement when moved by the maximum amount (+ △ xmax) in the x direction.
9 is ensured.

Next, the principle of moving the needle bar frame 121 in the needle bar support 100 in the y direction will be described.

When the y-direction slide motion transmission shaft 141 moves ± △ x in the x direction, the △ y 90-degree direction conversion block 133 moves ± △ x in the x direction, and the ネ ジ y 90-degree direction conversion block 133 is screwed along the oblong 45-degree long hole 133a. 135 will be moved in the y-direction by ± △ y. As a result, the third △ y slide shaft 125 moves in the y direction, and this movement is transmitted to the needle bar frame 121 via the △ x slide shaft 127. Therefore, the needle bar 3 moves by ± Δy in the y direction together with the needle bar frame 121. At this time, the needle bar holder 41 moves in the y direction within the cylindrical portion 43b of the needle bar holder △ x △ y slide shaft 43. The first and second Δy slide shafts 115 and 116 have a length that does not fall out of the bearings 117 and 118 when the needle bar frame 121 moves by the maximum amount (−Δymax) in the −y direction. . Conversely, when the needle bar frame 121 moves in the + y direction by the maximum amount (+ △ ymax), the movement of the needle bar frame 121 between the Δx slide plate 103 and the needle bar frame 121 is prevented.
Directional spacing is defined.

Here, in the illustrated coordinate system, the needle bar frame 121 has the same amount in the + y direction (+ △ y = + 方向) when the y-direction slide motion transmitting shaft 141 moves + △ x in the + x direction. x), and conversely, when the y-direction slide motion transmitting shaft 141 moves by − △ x in the −x direction, the same amount (− △ y = − △) in the −y direction.
x). x-direction slide motion transmission shaft 111 and y-direction slide motion transmission shaft 14
The same is true when 1 moves together, in which case x
Needle bar frame 1 in the direction of the combined vector in the
21 will be moved obliquely.

Next, the x-direction sliding motion transmission shaft 1
A mechanism for causing the sliding motion transmission shaft 141 to perform the sliding motion on the eleventh and y-direction sliding motion transmission shafts 141 will be described.

The x-direction slide movement transmission shaft 111 and the y-direction slide movement transmission shaft 114 are arranged on the left and right of the upper shaft 5 as shown in the exploded perspective view of FIG.
A connecting pin 155 with a zero-point adjustment function is attached to one end of the forked rod 151 for needle swing and the forked rod 153 for needle swing.
At 157, it is rotatably fixed. A screw gear 161 is fixed to the upper shaft 5 for power transmission for causing the forked rods 151 and 153 to swing. A needle swing cam shaft 163 extending in a direction orthogonal to the upper shaft 5 is provided below the upper shaft 5. The screw gear 161 is meshed with a screw gear 165 fixed to the swing cam shaft 163. The gear ratio between the screw gear 161 and the screw gear 165 is such that the needle swing cam shaft 163 is rotated while the upper shaft 5 rotates twice.
Is rotated once.

The forked portion 15 of each forked rod 151, 153
1a and 153a are engaged with a triangular Δx needle swing cam 167 and a Δy needle swing cam 169 which are eccentrically fixed to the needle swing cam shaft 163. Note that a semi-circular member 171 and a proximity sensor 173 for detecting a cam position are attached to one end of the swinging cam shaft 163. Also,
Reference numeral 175 denotes a swing camshaft set collar.

In addition, each of the forked rods 151 and 153 has $ x
In the vicinity of the branch point of the forked portions 151a and 153a of the forked rods 151 and 153, the support shafts 177 and 179 and the nut 18
Needle swing slide block 1 via 1, 183
85,187 are attached. The needle swing slide blocks 185 and 187 are attached to the △ x swing width adjuster 189 and the △ y swing width adjuster 191 so as to be pressed by guide plates 193 to 196 as shown in the drawing. Each forked rod 151 and 153 is
In accordance with the rotation of 7, 169, they slide vertically along the guide grooves 189a, 191a of these swing width adjusters 189, 191. Each of the swing width adjusters 189 and 191 has a support shaft 1 inserted from the front side into a cylindrical shaft 189b or 191b provided on the back surface thereof.
The angle can be changed with 97 and 199 as the center of rotation. The support shafts 197 and 199 are configured to be able to adjust the mounting position with respect to the sewing machine frame (not shown) via the center line adjusting members 201 and 203.

The swing width adjusters 189, 19
At the upper end portion of the AC servo horns 209 and 211 fixed to the rotating shafts of the AC servo motor 205 for controlling the swing width and the AC servo motor 207 for controlling the swing width, The swing link 213 and the △ y needle swing link 215 are fixed.

The AC servo horns 209 and 211 are rotated by a predetermined angle by controlling the driving of the AC servo motors 205 and 207 for the Δx swing width control and the Δy swing width control. , 211 connected to the 針 x and △ y swing links 213, 215
By changing the angles of the △ x swing width adjuster 189 and the △ y swing width adjuster 191 via, the fulcrums 151b, 153b of the △ x needle swing bifurcated rod 151 and the △ y needle swing bifurcated rod 153 ( x-direction slide motion transmission shaft 111 and y-direction slide motion transmission shaft 141
(The part to which is attached) is changed in the x-axis direction. This principle will be described with reference to FIG.

As shown in FIG. 7A, each swing width adjuster 1
When the guide grooves 189a and 191a of the 89 and 191 face in the vertical direction (z-axis direction),
7, 169, the two forked rods 151, 15
3 moves up and down in the z-axis direction. Therefore, in practice, the fulcrums 151b and 153b at the left end of the figure slightly move in the left and right directions of the figure. This fine movement amount can be approached to zero as much as possible by increasing the length of L2 in the figure. Also, L
Similarly, by making 2 / L1 as close as possible to 1, the amount of fine movement of each of the fulcrums 151b, 153b can be made as close to 0 as possible. In this embodiment mode, FIG.
In this state, the amount of fine movement of each of the fulcrums 151b and 153b is made to approach zero as much as possible, and this state is regarded as a state where the swing width = 0.

Next, the AC servomotor 205 for controlling the swing width in the x-direction and the AC servomotor 20 for controlling the swing width in the
7 to drive the amplitude controller 18 for each of the $ x and $ y
9 and 191 are inclined by an angle θ as shown in FIGS. 7B and 7C. In this case, each forked rod 151, 1
53 is an x-direction sliding motion transmission shaft 1 as shown in the figure.
The fulcrum 151b, 153b connected to the 11 and y-direction slide motion transmission shaft 141 is largely moved right and left. Thereby, the x-direction slide motion transmission shaft 111 and the y-direction slide motion transmission shaft 1
41 performs a sliding motion, and each swing width adjuster 189, 1
With the predetermined swing width corresponding to the inclination angle θ of 91, a state where the needle bar frame 121 is horizontally moved by ± Δx and ± Δy in the x and y directions is realized.

Here, the state of FIG.
(△ x = △ y = 0), the bifurcated rod 151,
153: the amount of vertical movement D in the z-axis direction D = (h2−h1) L
2 / L1. Accordingly, the movement amount of the left end fulcrums 151b and 153b in FIGS. 7B and 7C is as follows.

[0054]

Ｘx = △ y = tan θ (h2-h1) L2 / L1

The semi-circular plate 171 and the proximity sensor 173
Is provided to determine whether the upper shaft 5 is about to perform an odd number of rotations or an even number of rotations. Upper shaft 5 because of the relationship with the embroidery design
Tilts the .DELTA.x swing width adjuster 189 and .DELTA.y swing width adjuster 191 to the + .theta. Side in FIG. 7 (A) depending on whether the rotation is to be performed the odd number of rotations or the even number of rotations. This is because it is necessary to change whether it is tilted to the -θ side.

As described above, while referring to the detection signal of the proximity sensor 173, the AC servo motor 205 for controlling the .DELTA.
And the Δy swing width control AC servomotor 207 is driven so as to tilt the swing width adjusters 189 and 191 to the + θ side or the −θ side. As a result, the needle bar 3 is moved up and down in the z-axis direction while the needle bar frame 121 is horizontally moved in the x and y directions by the swing width ± △ x and ± △ y, and the seam is stitched at the desired stitch width. Is formed.

Next, the needle plate / hook moving mechanism 300 will be described. First, components and the like constituting a mechanism for transmitting a rotational force from the vertical shaft 21 to the shuttle 9 will be described mainly with reference to an exploded perspective view on the lower shaft side in FIG. 8 and an enlarged perspective view on the lower shaft side in FIG. I do.

As shown in FIG. 3, the bevel gear 303 attached to the end of the first lower shaft 301 meshes with the bevel gear 27 at the lower end of the vertical shaft 21. This first lower shaft 301
Has a screw gear 305 fixed to the opposite side of the bevel gear 303. And it is horizontally supported by a bearing 307 with respect to the sewing machine frame (not shown).

On the front side of the first lower shaft 301, a second
Are arranged in parallel. In the middle of the second lower shaft 311, the screw gear 305 of the first lower shaft 301
A screw gear 313 that is engaged with the gear 313 is attached. Here, a screw gear 305 having a longer axial length than the screw gear 313 is employed. This is to prevent the two screw gears 305 and 313 from being disengaged when the second lower shaft 311 is moved in the x direction, as described later. A spur gear 315 is fixed to the tip of the second lower shaft 311. The second lower shaft 311 is supported by two bearings 317 and 319 so as to be freely rotatable and axially slidable with respect to a sewing machine frame (not shown).

Below the second lower shaft 311,
Further, a third lower shaft 321 is arranged. The third lower shaft 321 has spur gears 323 and 325 fixed to both ends thereof. The spur gear 323 fixed to the rear end side
With the spur gear 315 of the lower shaft 311. Here, the spur gear 323 on the rear end side of the third lower shaft 321 has a longer axial length than the spur gear 315 fixed to the second lower shaft 311. This, as described below,
This is to prevent the two spur gears 323 and 315 from being disengaged when the second lower shaft 311 is moved in the x direction. Reference numeral 327 is a set color.

Further, a fourth lower shaft 331 is arranged above the third lower shaft 321. The fourth lower shaft 331 has a spur gear 32 on the front end side of the third lower shaft 321.
The spur gear 333 meshed with 5 is fixed. Reference numeral 335 is a set color, and reference numeral 337 is a spacer.

The fifth lower shaft 341 is disposed behind the fourth lower shaft 331. This fifth lower shaft 34
1 includes a spur gear 343 meshed with the spur gear 333 of the fourth lower shaft 331. Here, the fourth lower shaft 33
The spur gear 333 fixed to 1 has a longer axial length than the spur gear 343 fixed to the fifth lower shaft. This means that the fifth lower shaft 311 is connected to x as described later.
When moved in the direction, the two spur gears 331, 343
In order not to disengage. The fifth lower shaft 341 is supported by bearings 345 and 347 so as to be able to slide in the axial direction with respect to a sewing machine frame (not shown), and the shuttle 9 is attached to the front end.

The torque of the upper shaft 5 is transmitted to the vertical shaft 21 by bevel gears 23 and 26, and the first lower shaft 301 is rotated by bevel gears 27 and 303. Then, the rotation of the first lower shaft 301 is transmitted to the second lower shaft 301 via the screw gears 305 and 313.
To the lower shaft 311. Further, the rotation of the second lower shaft 311 is transmitted to the third lower shaft 321 via the spur gears 315 and 323. And the third lower shaft 321
Is rotated by the fourth lower shaft 3 via the spur gears 325 and 333.
31 and further transmitted to the fifth lower shaft 341 via the spur gears 333 and 343. Thus, the upper shaft 5
Is transmitted to the shuttle 9.

Next, a mechanism for moving the needle plate 7 and the shuttle 9 in the x-axis direction will be described. To realize this mechanism, first, the fifth lower shaft 341 is provided with two disks 349 and 351 at a position immediately after the shuttle 9. The needle plate 7 is fixed in the gap between the two disks 349 and 351.
Roller members 367, 369 fixed to the feet 363, 365 of the x slide unit 361 are inserted. Also, the foot 36 of the △ x slide unit 361
3, 365, a lower block 371 is fixed so as to surround the disks 349, 351. The slide unit shafts 373 and 375 are inserted into the Δx slide unit 361 and the lower block 371, respectively, so as to be able to slide in the x-axis direction. These slide unit shafts 373 and 375 are fixed horizontally to a sewing machine frame (not shown). Reference numeral 377 denotes an inner hook stopper.

Then, as described above, the fifth lower shaft 34
1 is fixed to a sewing machine frame (not shown) so as to be slidable in the x-axis direction.
81 is fixed. The △ x of the needle bar frame 121 is attached to the grooved member 381 around the pendulum shaft 383.
The roller members 391 and 393 fixed to the upper arms 387 and 389 of the △ x motion-compatible pendulum member 385 that is rocked in conjunction with the reciprocating motion in the direction are fitted.

One end 397a of a lower connecting link 397 for transmitting a motion corresponding to a swing width Δx in the x direction is connected to a lower end 395 of the pendulum member 385 via the connecting pin 401. Have been. The other end 397b of the lower connecting link 397 is connected to the connecting pin 403.
Is connected to the lower end 405a of a vertical connection link 405 extending in the vertical direction.

This vertical link 405 is shown in FIGS.
As shown in (1), it is supported by a sewing machine frame (not shown) via a support shaft 407 so as to be rotatable around a support hole 405b in the middle. Then, as can be understood from the exploded perspective view of FIG.
5c, one end 409a is connected to the △ x needle swinging fork rod 151, and the movement in the 運動 x direction is synchronized with the movement of the needle bar frame 121 in the △ x direction by the vertical connection link 405.
The other end 409 b of the connection rod 409 for transmitting the Δx motion for transmission to the other end is connected using a connection pin 411.

With the above configuration, the fulcrum 151b of the bifurcated rod 151 for swinging the .xi.
だ け, the ロ ッ ド x motion transmitting connecting rod 409 moves ± △ x in the same direction. As a result, the vertical connecting link 405 moves the lower end 405a of the vertical connecting link 405 with the Δx needle swing bifurcated rod 15 with the movement of the Δx motion transmitting connecting rod 409.
It is rotated so as to move in the direction opposite to the direction of movement of the first. Then, this time, the lower connecting link 397 moves in the moving direction of the lower end 405a of the vertical connecting link 405. As a result, the pendulum member 385 corresponding to the Δx motion
Rotates the upper arms 387 and 389 in the same direction as the movement direction of the forked rod 151 for swinging the △ x needle. Therefore, △
The needle bar frame 12 in the bifurcated rod 151 for x needle swing
1 is moved in the x direction, the pendulum member 385 corresponding to the △ x motion performs a rotating motion, and the fifth lower shaft 34
1 along the x-axis in the same direction as the needle bar frame 121 ± △
An operation of moving by x is executed. In the present embodiment, the amount of movement of the needle bar frame 121 in the x-axis direction is determined by appropriately determining the length of the vertical connection link 405, the positional relationship of the center of rotation, the size of the △ x motion-compatible pendulum member 385, and the like. It is assumed that the fifth lower shaft 341 is designed to move in the same direction as the needle bar frame 121 along the x-axis by the same amount as Δx.

Next, the non-constant speed rotation mechanism 500 of the shuttle will be described. As shown in FIGS. 8 and 9, the main configuration of the variable speed rotary mechanism 500 of the shuttle includes a grooved member 501 fixed to the rear end of a second lower shaft 311 and a pendulum shaft 503 as a center. The roller members 511 and 511 fixed to the upper arms 507 and 509 of the pendulum member 505 corresponding to the △ y motion that is swung in conjunction with the reciprocation of the needle bar frame 121 in the △ y direction.
513 are to be fitted.

A block 515 provided above the pendulum member 505 so as to protrude to the front side has one end of a lower connecting link 517 for transmitting the Δy needle swing motion to the Δy motion corresponding pendulum member 505. 517a is the connecting pin 519
Are connected via The other end 517b of the lower connecting link 517 for transmitting the △ y swing motion is connected to the lower end 523a of the vertical connecting link 523 for transmitting the △ y swing motion which extends in the vertical direction via the connecting pin 521. ing.

The vertical link 523 is connected to the vertical link 523 shown in FIGS.
As shown in (1), it is supported by a sewing machine frame (not shown) via a support shaft 525 so as to be rotatable around a support hole 523b in the middle thereof. And this vertical link 5
As shown in FIG. 2, one end 531a is connected to the upper end 523c of the 23 for a forked rod 153 for swinging the y needle, and synchronized with the movement of the needle bar frame 121 in the y direction.
The other end 531b of the connecting rod 531 for transmitting the y motion that moves in the x direction and transmits the motion in the x direction to the vertical connecting link 523 is connected using a connecting pin 533.

With the above configuration, when the fulcrum 153b of the forked bifurcated rod 153 moves in the x-axis direction, the connecting rod 531 for transmitting the y motion moves in the same direction as the forked bifurcated rod 153. I do. At this time, as described above, the △ y90-degree direction conversion block 133 is used.
Of the needle bar frame 121 due to the action of
Perform directional movement. Therefore, the movement of the connecting rod 531 for transmitting the △ y motion in the △ x direction is caused by the movement of the needle bar frame 121.
In the Δy direction. The vertical connecting link 523 is rotated so as to move the lower end 523a of the vertical connecting link 523 in the direction opposite to the moving direction of the forked bifurcating rod 153 with the movement of the connecting rod 531 for transmitting the △ y motion. . Then, this time, the lower connecting link 517 moves in the moving direction of the lower end 523a of the vertical connecting link 523. As a result, the △ y motion-compatible pendulum member 505 moves its upper arms 507 and 509 to △ y.
The needle swinging fork rod 153 is rotated in a direction opposite to the moving direction.

Accordingly, when the operation of moving the needle bar frame 121 in the + y direction is performed on the forked bifurcated rod 153 for the △ y needle swing, the △ y motion-compatible pendulum member 515 performs a rotating motion, and the second lower shaft 311 is rotated. Is moved in the −x direction. As a result, in the meshing relationship between the screw gears 305 and 313, the rotation is transmitted while the rotation angle of the second lower shaft 311 is advanced, and the timing of hooking the thread with the blade point in the rotation of the shuttle 9 is forcibly advanced. Is in a state where it can be Conversely, when the operation of moving the needle bar frame 121 in the −y direction is performed on the bifurcated rod for △ y needle swing 153, the △ y motion-compatible pendulum member 515 is formed.
Performs a rotating motion, and moves the second lower shaft 311 in the + x direction. As a result, the screw gear 305,
In the meshing relationship of 313, the rotation is transmitted while the rotation angle of the second lower shaft 311 is returned, and the timing at which the thread is hooked by the blade at the rotation of the shuttle 9 is forcibly delayed.

As described above, the rotation speed of the shuttle 9 is
The change in the amount corresponding to the movement amount ± の y in the y direction of 21 is performed for the following reason.

First, what kind of problem will occur when the rotation speed of the shuttle 9 is not changed will be described. FIG.
As shown in (A), when the movement amount in the y direction △ y = 0, the needle 4
The relationship between the vertical movement of the needle bar 3 in the z-axis direction and the position of the sword tip of the shuttle 9 is adjusted so that the sword tip meets the center portion of the undercut 4a at the right time. For this reason, when the needle bar frame 121 is moved in the + Δy direction by the maximum amount (± Δxmax = ± Δymax = ± 6.35 mm in this embodiment), when the blade point passes the position of the needle 4, Needle 4
As a result, the sword tip will be higher than the case of y = 0, and the sword will pass below the scoop 4a. Therefore, it is impossible to scoop the upper thread with a sword.

On the other hand, by making the rotation speed of the shuttle 9 variable as described above, when the needle bar frame 121 is moved in the + y direction as shown in FIG.
When the rotation angle of the shuttle 9 is advanced by a predetermined angle corresponding to Δy, and conversely, when the needle bar frame 121 is moved in the −y direction, the rotation angle of the shuttle 9 is increased by a predetermined angle corresponding to the amount of movement −Δy. By delaying, when the needle 4 rises by a certain amount from the bottom dead center, the sword tip of the shuttle 9 and the needle 4 can be met within the range of the gobo 4a.

FIG. 11 is a timing chart showing this relationship. As shown in FIGS.
The needle bar 3 moves up and down once per rotation of the upper shaft 5. When the swing width △ y = 0 in the y-direction, as shown in FIG. 3C, when the needle bar 3 has risen a predetermined amount from the bottom dead center, the blade point of the shuttle 9 passes the 0-degree position. Thus, the setting is made so that the needle thread can be accurately scooped (see arrow A). On the other hand, when the needle bar frame 121 is moved in the + y direction (+ Δy = + Δymax =
+6.35 mm), as shown in FIG.
The setting is made such that the needle 4 is encountered when the needle is further rotated by a predetermined angle beyond the degree (see arrow B). This is the reason why the shuttle 9 is rotated while the rotation angle of the shuttle 9 is forcibly advanced when the needle bar frame 121 is moved in the + y direction. Further, when the needle bar frame 121 is moved in the -y direction (in the example of FIG. 11, -６y =-△ ymax = -6.35).
mm), as shown in the figure (E), the needle 9 of the shuttle 9 is set so as to meet the needle 4 when it is rotated by a predetermined angle from 0 ° to a position in front of it (see arrow C). This is the needle bar frame 12
This is the reason why the shuttle 9 is rotated while the rotation angle of the shuttle 9 is forcibly delayed when 1 is moved in the -y direction.

In the present embodiment, by changing the rotation speed of the shuttle 9 as described above, a stitch can be reliably formed even when the needle bar 3 is moved in the y direction.
In addition, in response to the movement of the needle bar 3 in the y direction, the needle hole 7a of the needle plate 7 has a maximum swing width in the y direction (12.7 mm in the present embodiment) as shown in FIG. On the other hand, it is a long hole extending in the y-direction with a length that does not cause collision between the needle 4 and the needle plate 7.

Next, a control system in the embroidery sewing machine 1 according to the present embodiment will be described. The control system of the embroidery sewing machine 1 is mainly composed of a microcomputer 601 as shown in FIG. This microcomputer 60
1 includes a CPU, a ROM, a RAM, and the like, and executes embroidery in accordance with a control program stored in the ROM in advance. The microcomputer 601 includes, as main devices, an embroidery data input device 603 for inputting embroidery data, an encoder 19 for controlling rotation of the upper shaft 5 and driving control of the embroidery frame in the X-axis and Y-axis directions. Needle swing cam 1
Proximity sensor 173 for position detection of 67, 169, spindle motor 10, ΔAC servo motor 205 for x swing width control for adjusting the swing width in x direction, △ for adjusting the swing width in y direction. AC servo motor 20 for y swing width control
7 and an embroidery frame driving device 605 for moving an embroidery frame (not shown) in the X and Y directions with respect to the sewing machine frame. Here, in the following description, X, Y or △ X,
The data described in the letter “Y” and the uppercase alphabet means control data for the embroidery frame, and the data described in the letter “x” and “y” in the lowercase means data on the swing width of the needle bar 3. I do.

The embroidery data input device 603, for example, when performing embroidery as shown in FIG.
Data and Y data, x and y data for swing width, and data including functions such as stop, thread trimming, and thread change are input. Here, the description of the function is omitted, and only the generation of the embroidery pattern will be described. As shown in FIG. 14, this data is represented by △ in relative coordinates where the embroidery start position is the origin (0, 0) of the coordinates.
X data, △ Y data, and △ x data, 振 り, which are swing widths when the coordinate position of the embroidery frame driving data is set as the origin.
An embroidery pattern is generated based on the y data.

In the present embodiment, based on the input of such one-needle data, the microcomputer 601 operates as shown in FIG.
5, the control data for the embroidery frame driving device 605 and the control data for each of the swing width control AC servomotors 205 and 207 are calculated, and the embroidery is executed. I have.

In this process, first, the embroidery data input from the embroidery data input device 603 is read (S1).
0). As described above, the data read in this manner include the △ X data and △ Y data necessary for drive control of the embroidery frame driving device 605 and the △ x data and △ y data required for swing width adjustment.
It is composed of data. In the next step, S
Of the embroidery data read in step 10, $ x for swing width adjustment
AC for each width control based on data and Δy data
A motor drive amount to be commanded for the servo motors 205 and 207 is calculated (S20).

In the calculation in step S20,
{X data,} corresponding to the angle at which each swing width adjuster 189, 191 is tilted and half the swing width in the x and y directions.
A table or the like in which the relationship with the y data is associated is stored in advance in a ROM or the like in the microcomputer 601, and this table is read in step S10.
The drive amount of each of the amplitude control AC servomotors 205 and 207 may be calculated by referring to the x data and the Δy data.

In the present embodiment, the relationship between the inclination angle θ of each of the needle swing width adjusters 185 and 191 and the swing widths Δx and Δy is the relationship of Equation 1 described above. Therefore, if the swing widths △ x and △ y are determined, each swing amount width adjuster 185,1
The inclination angle θ of 91 can be calculated backward. Then, the relationship between the inclination angle θ and the inclination angles of the AC servo horns 209 and 211 attached to each of the AC servomotors 205 and 207 is geometrically determined, thereby determining the drive amount of each of the AC servomotors 205 and 207. be able to. Thus, for each of the swing widths △ x and △ y, each AC servomotor 2
The results of determining the drive amounts 05 and 207 can be tabulated in advance. Further, in the process of S20, without using such a table, the tilt angle θ is calculated back from the swing widths △ x, △ y read in S10 and the equation (1), and each swing width adjuster 185, 194
AC servomotors 205 and 20 required to tilt the
7 may be obtained by calculation.

In this manner, the control data #X, #Y for the embroidery frame driving device 605 and the AC servomotors 205, 20 corresponding to #x, #y corresponding to the half width of the needle swing width.
7, the drive control (S) for each of the AC servomotors 205 and 207 is performed according to the calculation result.
30), drive control for the embroidery frame drive 605 (S4
0) and drive control of the spindle motor 10 is executed (S5).
0).

As a result, in the case of a normal embroidery sewing machine, the embroidery frames are set at the needle drop points P1, P2, and P2 shown in FIG.
1 of the upper shaft 5 so that P3,.
While the embroidery is executed while making a large zigzag motion for each rotation, in the present embodiment, the embroidery frame is
As shown by an arrow in FIG. 13B, the points M1 and M
It is only necessary to move linearly between 2, M3,..., And the amount of movement is a small amount corresponding to の of the pitch in satin stitch (referred to as thread density in a normal embroidery machine). Becomes

As described above, since the moving amount of the embroidery frame is extremely small as compared with the case of the normal embroidery sewing machine, the moving can be completed quickly, and in the above-mentioned example, +
Move the needle bar 3 from x to -x and from + y to -y,
The driving force for swinging in the y-direction is such that the rotational force of the upper shaft 5 that is rotationally driven by the main shaft motor 10 is used as power, so that embroidery with a large swing width is performed. However, the rotation speed of the spindle motor 10 does not need to be reduced.

FIG. 16 shows the relationship between the moving direction of the frame and the swing width when various embroidery patterns are sewn up by the embroidery sewing machine according to the present embodiment. For example, as described above, if the embroidery is executed with the swing width 2a while moving the embroidery frame in the X-axis direction, the microcomputer 601 sets △ x = 0, △ y = a, By controlling the AC servo motor 207 to rotate by a predetermined angle in accordance with the given half width and linearly moving and stopping the embroidery frame driving device 605 by an amount corresponding to the yarn density, the half width is given as shown in FIG. The embroidery is performed as shown in FIG. Also, the swing width is set to 0 along the x-axis.
When one-needle data is input such that it gradually increases from 0 and returns to 0 again, the embroidery frame moves to the upper
It is moved little by little along the X axis once per rotation,
The control of gradually increasing the angle of the y swing width adjuster 191 from 0 degrees and returning it to 0 degrees is executed, and the embroidery sewing of the pattern as shown in FIG.
It can be executed without reducing the rotation speed of zero. Furthermore, in the case of a satin stitch in which an arc is drawn with the same swing width, the embroidery frame gradually changes the thread density at a rate of once per rotation of the upper shaft 5 along the middle point of the embroidery pattern in which the arc is drawn. Of the AC servo motors 205 and 20 so that the angle of each of the swing width adjusters 189 and 191 is changed little by one for each needle drop.
By controlling the drive of the embroidery 7, embroidery as shown in FIG. 16C can be executed without lowering the rotation speed of the spindle motor 10.

In the case of performing embroidery as shown in FIG. 16D, after performing a predetermined embroidery, the needle drop point at the start of sewing when starting the next embroidery is determined with respect to the center line of the embroidery. According to the detection signal of the proximity sensor 173, the inclination angle θ of the Δy swing width adjuster 191 is changed from + θ to −θ, or from −θ if a predetermined first embroidery is performed at −θ, depending on the direction. Embroidery can be performed by setting + θ. If θ is the same and the sign is the same, the embroidery shown in FIG.

As described above, according to the embroidery sewing machine 1 of this embodiment, by moving the needle bar support 100 in the xy directions, the embroidery frame is slightly moved along the locus passing through the middle point of the satin stitch. Satin stitch embroidery can be carried out only by moving the embroidery frame smoothly, without applying severe reciprocating motion to the embroidery frame. At this time, the amount of movement of the embroidery frame is の of the amount corresponding to the thread density (normally 0.4 mm to 0.5 mm), so that the time required for moving the embroidery frame is extremely short. In addition, since the swing width of the needle can be adjusted only by adjusting the inclination angle of each swing width adjuster 189, 191 by each of the AC servomotors 205, 207, the needle bar support 100 is moved in the xy directions. In addition, there is no need to reduce the rotation speed of the spindle motor 10. Therefore,
Various patterns can be embroidered while the rotation speed of the spindle motor 10 is kept high.

Further, as described above, since the moving amount of the embroidery frame is very small, even when embroidering is performed while rotating the spindle motor 10 at high speed, the moving speed of the embroidery frame does not need to be increased. Good. For this reason, when the embroidery object to be embroidered is heavy, the inertial force acting on the entire embroidery frame including the sewn object becomes small while the movement of the embroidery frame is repeatedly stopped. Therefore, a situation in which the sewn object comes off the embroidery frame during the execution of the embroidery does not occur. As a result, embroidery on heavy sewing material such as leather, which could not be performed unless the rotation speed of the upper shaft was extremely low, can be performed while maintaining the rotation speed of the upper shaft sufficiently high. The effect that can be done is also exhibited.

Further, a rotary mechanism 500 for varying the rotation speed of the shuttle 9 in accordance with the swing width Δy of the needle 4 in the y direction.
Is adopted, the stitch formation does not fail even if the needle 4 is largely shaken in the y direction.

Further, since the needle 4 always acts vertically on a sewn material such as a fabric to be embroidered, no excessive force is applied, and the embroidery is performed on a thick cloth or leather. Does not cause any trouble.

As described above, an embodiment of the present invention has been described. However, the present invention can be implemented in various modes without departing from the gist of the present invention.

For example, in the above-described embodiment, embroidery is performed by inputting data consisting of $ X, $ Y, $ x, and $ y as functions, and embroidering. May be used as vector representation data of △ x and △ y.

It is also possible to effectively use single-needle data stored conventionally. For example, the embroidery data input device 603 is configured to input one stitch data of each needle drop point P1, P2,... When performing embroidery as shown in FIG. This one-needle data is, for example, a position coordinate data X, Y as shown in FIG. 18A or a coordinate increment value か ら from a coordinate origin as shown in FIG. 18B.
X and △ Y. In a normal embroidery sewing machine currently in practical use, embroidery is executed while the embroidery frame is largely moved in a zigzag manner based on such one stitch data. In the following description of the processing, FIG.
Description will be made assuming that one-needle data is input in the format of FIG.

In this modification, the microcomputer 601 operates based on the input of one stitch data as shown in FIG.
The control data for the embroidery frame driving device 605 and each AC servo motor 20
It is configured to calculate control data for 5,207 and execute embroidery.

In this process, first, the single stitch data P1, P2, P3,.
Is read (S110). .. Among the single stitch data P1, P2, P3,..., The coordinate values of the odd-numbered single stitch data P1, P3, P5,. The coordinate increment values △ X and △ Y are calculated (S120). Each of the odd-numbered needle drop points P1, P3,... And the even-numbered needle drop points P2, P4,. Midpoint M1 (P1 and P1
2 (middle point), M2 (middle point of P3 and P4),... Are calculated (S130). Next, odd-numbered needle drop points P1, P3, P5,.
By calculating the difference between the coordinate values of 2, M3,.
△ x, △ y, which are half widths of the needle swing width, are calculated (S14).
0). In the example shown in FIGS. 17A and 18A, the half width Δx of the swing width in the x direction is 0, and a certain value is calculated as the half width Δy of the swing width in the y direction. Become.

Next, the drive amount of each of the AC servomotors 205 and 207 is calculated according to the calculation results of △ x and △ y (S150). These AC servomotors 205 and 20
The calculation of the driving amount of 7 may be performed in the same manner as the calculation processing of S20 in the above-described embodiment.

Thus, the control data #X and #Y for the embroidery frame driving device 605 and the AC servomotors 205 and 20 corresponding to #x and #y corresponding to the half width of the needle swing width, respectively.
7, the drive control (S) for each of the AC servomotors 205 and 207 is performed according to the calculation result.
160), drive control for the embroidery frame drive 605 (S
170) and drive control of the spindle motor 10 is executed (S
180).

As a result, in the case of a normal embroidery sewing machine, the embroidery frames are set at the needle drop points P1, P2, and P2 shown in FIG.
1 of the upper shaft 5 so that P3,.
While the embroidery is executed while making a large zigzag motion for each rotation, in the present embodiment, the embroidery frame is
.. At a rate of once per rotation, as shown by the arrow in FIG. 17B, on the line segment passing through the midpoints M1, M2, M3,. M1, M2, M3, ...
The needle bar is swung in the y-direction from + Δy to −Δy as shown in FIG. 17 (C) by simply linearly moving between the embroidery patterns to sew an embroidery pattern with a large swing width of the needle. Also in this case, the same effect as in the above-described embodiment can be exerted without causing the embroidery frame to perform a severe movement.

[0102]

According to the embroidery sewing machine of the present invention, the needle bar is
In an embroidery sewing machine that performs embroidery while moving in the y direction, the needle bar can be moved in the xy direction while vertically moving the needle bar vertically in the z-axis direction. Even if you can easily embroider,
In addition, the timing of the encounter between the needle and the sword can also be easily adjusted. The embroidery frame only needs to be moved so as to draw a locus passing through the center of the stitch, and the movement amount of the embroidery frame requires only a very small movement amount such as the thread density or half thereof, so that the speed of embroidery is increased. Can be achieved.

In particular, in the embroidery sewing machine of the present invention, the driving force for moving the needle bar in the xy directions is obtained from the rotation of the upper shaft. Can be performed.

In addition, since the moving amount and moving speed of the embroidery frame may be small, when performing embroidery on a heavy sewn object such as leather, the sewn object may be moved by the inertia force when the embroidery frame stops moving. Problems such as detachment from the support mechanism can also be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of an entire drive mechanism of an embroidery sewing machine according to an embodiment.

FIG. 2 is an exploded perspective view of an upper shaft portion according to the embodiment.

FIG. 3 is an enlarged perspective view of an upper shaft portion according to the embodiment.

FIG. 4 is an exploded perspective view of the needle bar support in the embodiment.

FIG. 5 is an enlarged perspective view of the needle bar support in the embodiment.

FIGS. 6A and 6B are enlarged perspective views of the needle bar support, wherein FIG. 6A is a perspective view as viewed from the back side, and FIG. 6B is a perspective view as viewed from the front side.

FIG. 7 is an explanatory diagram showing the principle of lateral movement of the forked rod by tilting the needle swing amount adjuster in the embodiment.

FIG. 8 is an exploded perspective view of the lower shaft side in the embodiment.

FIG. 9 is an enlarged perspective view of the lower shaft side in the embodiment.

FIG. 10 is an explanatory diagram showing the reason why the rotation speed of the shuttle is variable in the embodiment, and the relationship between the blade point and the needle when the rotation speed is variable.

FIG. 11 is a timing chart showing the relationship between the point of the sword and the needle in the embodiment.

FIG. 12 is a block diagram of a control system according to the embodiment.

FIG. 13 is a schematic diagram showing embroidery data in the embodiment.

FIG. 14 is an explanatory diagram showing embroidery data in the embodiment.

FIG. 15 is a flowchart showing a schematic procedure of an embroidery execution process in the embodiment.

FIG. 16 is an explanatory diagram showing an example of embroidery in the embodiment.

FIG. 17 is a schematic diagram showing embroidery data in a modified example.

FIG. 18 is an explanatory diagram showing embroidery data in a modified example.

FIG. 19 is a flowchart showing a schematic procedure of an embroidery execution process in a modified example.

[Explanation of symbols]

1. Embroidery sewing machine 3. Needle bar 4. Needle 4a
... Eguri, 5 ... Upper shaft, 7 ... Needle plate, 7a ...
・ Needle hole, 9 ・ ・ ・ Hook, 10 ・ ・ ・ Spindle motor, 11,1
2, 24, 25 ... bearing, 21 ... vertical shaft, 23, 2
6, 27: bevel gear, 31: link balance, 39
..Needle bar crank rods, 41 ... Needle bar holders, 43
..Needle bar holding x and y slide shafts, 45 ... needle bar guides, 47 ... needle bar guide slide blocks, 1
00 ... needle bar support, 101 ... x-direction slide plate support block, 103 ... #x slide plate, 10
4, 105, 106, 107 ... x slide way, 111 ... x slide shaft (x direction slide motion transmission shaft), 113, 117, 118, 12
9, 131, 143... Bearing, 115.
y slide shaft, 116 ... second {y slide shaft, 121 ... needle bar frame, 123 ...}
y slide shaft fixed shaft, 125... third Δy slide shaft, 125 a.
.. △ x slide shaft, 133... △ y 90-degree direction conversion block, 133a 長 long hole, 135 ネ ジ screw, 1
41... Y slide shaft (y direction sliding motion transmission shaft), 151... X x needle swing bifurcated rod, 153.
153a ... bifurcated part, 151b, 153b ... fulcrum, 155, 157 ... connection pin, 161, 165
..Screw gears, 163...
・ △ x swing cam, 169 ... △ y swing cam, 17
3: proximity sensor, 185, 187: needle swing slide block, 189: x x needle swing amount adjuster, 19
1... Y needle swing amount adjuster, 189a, 191a,.
Guide groove, 205: AC servo motor for controlling the amount of x swing, 207: AC servo motor for controlling the amount of swing, 209, 211: AC servo horn, 21
3 ... @ x swing link, 215 ... y swing link, 300 ... needle plate / hook moving mechanism, 301 ... first lower shaft, 303 ... bevel gear, 305 ... ..Screw gear, 307 ... bearing, 311 ... second lower shaft, 31
3 ... screw gear, 315 ... spur gear, 317, 31
9 ... bearing, 321 ... third lower shaft, 323, 32
5 ... Spur gear, 331 ... Fourth lower shaft, 333 ...
Spur gear, 341, 5th lower shaft, 343, spur gear, 345, 347, bearing, 361, x slide unit, 371, lower block, 373, 3
75: slide unit shaft, 377: inner hook stop, 381: grooved member, 383: pendulum shaft,
385... X-motion pendulum member, 397... Lower connecting link, 405... Vertical connecting link, 409.
.. Connection rod for transmitting x motion, 500: Non-constant speed rotation mechanism of shuttle, 501: Grooved member, 503: Pendulum shaft, 505: Pendulum member for y motion, 517
... lower connecting link, 519, 521 ... connecting pin, 523 ... vertical connecting link, 531 ... 運動 y motion transmitting connecting rod, 531a ... one end, 601 ...
A microcomputer 603 embroidery data input device 605 embroidery frame drive device;

Claims (9)

[Claims] 1. A needle bar which is vertically moved in the z-axis direction in conjunction with rotation of an upper shaft, and an xy plane orthogonal to the z-axis while the needle bar is supported so as to be vertically movable in the z-axis direction. A needle bar support supported by the sewing machine frame so as to be able to move horizontally in an arbitrary direction along the axis; and a rotation of the upper shaft while the needle bar performs vertical movement twice in the z-axis direction. Is used as the driving force to move the needle bar support
A needle bar support reciprocating member capable of reciprocating once along a plane; and a suture between the upper thread and the lower thread in conjunction with the reciprocation of the needle bar support by the needle bar support reciprocating member. So that
An embroidery sewing machine provided with an encounter adjusting mechanism for adjusting the position and timing of the encounter between the needle plate and the shuttle for the lower thread and the needle. 2. The embroidery sewing machine according to claim 1, wherein the needle bar support is slidably supported in the x-axis direction with respect to the sewing machine frame when the x-axis is in a direction along the upper axis. A first slide member, and a second slide member supported to be slidable in the y-axis direction with respect to the first slide member, and the needle bar is moved in the z-axis direction with respect to the second slide member. An x-direction reciprocating member that is vertically movably supported, the needle bar support reciprocating member is driven by the rotation of the upper shaft, and reciprocates the first slide member in the x-axis direction; An embroidery sewing machine comprising: a y-direction reciprocating member driven by rotation of a shaft to reciprocate the second slide member in the y-axis direction. 3. The embroidery sewing machine according to claim 2, wherein the second slide member is movable in the x-axis direction with respect to a needle bar crank rod that converts rotation of the upper shaft into movement in the z-axis direction. A needle bar hugging support member that is engaged and supported; a needle bar hugging member that is supported by the needle bar hugging support member so as to be movable in the y-axis direction in a state where the needle bar is fixed; An embroidery sewing machine comprising a needle bar frame fixed to the needle bar and supporting the needle bar so as to be movable in the z-axis direction. 4. The embroidery sewing machine according to claim 3, wherein the x-direction reciprocating member transmits its own reciprocating motion in the x-axis direction to the first slide member, thereby forming the first slide member. Is configured to reciprocate in the x-axis direction, and is attached to the needle bar frame so as to be slidable with respect to a support shaft fixed to extend in the x-axis direction, and a shaft extending in the y-axis direction from itself. And a slide block supported by the sewing machine frame so as to be movable in the y-axis direction, and engaged with the slide block through a slot formed obliquely with respect to the x-axis and the y-axis. a direction conversion block for moving the slide block in the y-axis direction when moving in the x-axis direction, wherein the y-direction reciprocating member moves its own reciprocation in the x-axis direction in the direction. By transmitting the conversion block, the embroidery sewing machine, characterized by forming the second slide member as a member for reciprocating the y-axis direction. 5. The embroidery sewing machine according to claim 4, wherein the x-direction reciprocating member is rotated by one rotation for every two rotations of the upper shaft, and the first eccentric cam is rotated by one rotation. A first connecting member having one end engaged and the other end connected to the first slide member; and guiding the movement of the first connecting member by the first eccentric cam. By adjusting the movement amount of the first slide member in the x-axis direction by changing the movement direction of the connecting member, the needle swing width of the needle bar in the x-axis direction is adjusted.
A second eccentric cam rotating at a rate of once for every two rotations of the upper shaft, and one end being engaged with the second eccentric cam. A second connecting member coupled to the other end and connected to the direction changing block, and guiding the movement of the second connecting member by the second eccentric cam, in the direction of movement of the second connecting member. And a y-direction needle swing width adjusting member that adjusts the needle swing width of the needle bar in the y-axis direction by adjusting the amount of movement of the direction conversion block in the x-axis direction. Embroidery sewing machine. 6. The embroidery sewing machine according to claim 5, wherein the tilt angle of the x-direction needle swing width adjusting member is changed by a first AC servomotor, so that the second direction is adjusted according to the change of the tilt angle. The guide direction of the first connecting member is changed to adjust the swing width of the needle in the x-axis direction, and the tilt angle of the y-direction needle swing width adjusting member can be changed by a second AC servomotor. The embroidery sewing machine is characterized in that the embroidery sewing machine is configured as a member that changes the guide direction of the second connecting member according to the change of the tilt angle to adjust the swing width of the needle in the y-axis direction. 7. The embroidery sewing machine according to claim 2, wherein the encounter adjusting mechanism is linked to the x-direction reciprocating member, and the needle bar support is moved by the x-direction reciprocating member. A needle plate and shuttle moving mechanism for reciprocating the needle plate and the lower thread shuttle in the x-axis direction in synchronization with the reciprocating movement; and the needle bar linked to the y-direction reciprocating member, By forcibly changing the rotation angle of the shuttle in synchronization with the reciprocation of the support, the blade point of the shuttle meets the needle within the range of the needle so that the upper and lower threads are stitched. And a non-constant speed rotation mechanism of a shuttle that adjusts the timing of the encounter between the blade point and the needle, and a needle hole formed in the needle plate and formed as a long hole extending in the y-axis direction. An embroidery sewing machine characterized by the following. 8. The embroidery sewing machine according to claim 7, wherein a rotation of the upper shaft is transmitted, a first lower shaft having a first screw gear, and a second engagement with the first screw gear. A second lower shaft having a screw gear and a second lower shaft supported to be movable in the x-axis direction with respect to the sewing machine casing; and a second spur gear engaged with the first lower gear mounted on the second lower shaft. A third lower shaft having a spur gear; a fourth lower shaft having a fourth spur gear engaged with a third spur gear attached to the third lower shaft; It has a fifth spur gear that engages, is movable in the x-axis direction relative to the sewing machine frame, has a shuttle for the lower thread fixed to the tip, and is integrally movable with the needle plate in the x-axis direction. A fifth lower shaft engaged with the needle plate and the shuttle moving mechanism, wherein the needle plate and shuttle moving mechanism is linked to the x-direction reciprocating member via a link mechanism. Means for moving the fifth lower shaft by the same amount in the same direction with respect to the movement of the needle bar support in the x-axis direction while maintaining the engaged state of the fourth and fifth spur gears. The non-constant speed rotation mechanism of the shuttle is connected to the y through a link mechanism.
In accordance with the amount of movement of the needle bar support in the y-axis direction while maintaining the engagement of the first and second screw gears and the first and second spur gears. An embroidery sewing machine configured to move the second lower shaft in the x-axis direction. 9. An upper shaft rotated by a spindle motor, a needle bar crank rod attached to a tip of the upper shaft, for converting rotation of the upper shaft into a vertical movement in a z-axis direction, and a needle bar crank rod. A needle bar hugging support member engaged and supported movably in the x-axis direction along the upper shaft; and a y-axis direction movable with the needle bar fixed to the needle bar hugging support member. A needle bar holder engaged with and supported by the needle bar holder; a needle bar frame supporting the needle bar fixed to the needle bar holder so as to be vertically movable in the z-axis direction; and supporting the needle bar frame so as to be movable in the y-axis direction. Along with
A first slide member which is supported by the sewing machine frame so as to be movable in the x-axis direction, and which is slidably attached to a support shaft fixed to the needle bar frame so as to extend in the x-axis direction. A slide block supported on the sewing machine frame so as to be movable in the y-axis direction by a shaft extending in the y-axis direction from itself, and a long hole formed obliquely to the x-axis and the y-axis with respect to the slide block. A direction conversion block for moving the slide block in the y-axis direction when the slide block itself moves in the x-axis direction; a first screw gear fixed to the upper shaft; A camshaft having a second screw gear engaged with said screw gear, and arranged at right angles to said upper shaft so as to rotate at a rate of one rotation to two rotations of said upper shaft; First eccentric cam to be mounted A first forked rod having a forked portion at one end for engaging with the first eccentric cam, and having a first motion transmitting shaft connected to the first slide member at the other end; Guides the movement of the first forked rod by the eccentric cam of the first and foremost, and changes the direction of movement of the first forked rod, whereby the x of the first slide member transmitted by the first movement transmitting shaft is changed. An x-direction needle swing width adjusting member that adjusts an axial swing amount of the needle bar in the x-axis direction by adjusting an axial amount of movement; and a first angle that changes a tilt angle of the x-axis direction needle swing amount adjusting member. An AC servomotor, a second eccentric cam attached to the camshaft, and a second eccentric cam that is engaged with the second eccentric cam at one end and connected to the direction conversion block at the other end. Second fork with a motion transmission shaft The second motion transmission shaft by guiding the movement of the second forked rod by the second eccentric cam and changing the direction of movement of the second forked rod. Adjusting the amount of movement of the needle bar in the y-axis direction by adjusting the amount of movement in the x-axis direction, and changing the inclination angle of the y-direction needle swing width adjusting member. 2
An AC servomotor, a first lower shaft to which rotation of the upper shaft is transmitted and having a third screw gear, and a fourth screw gear to be engaged with the third screw gear; A third lower shaft having a second lower shaft movably supported in the x-axis direction with respect to the machine casing, and a second spur gear engaged with a first spur gear mounted on the second lower shaft; A shaft, a fourth lower shaft having a fourth spur gear engaged with a third spur gear mounted on the third lower shaft, and a fifth spur gear engaged with the fourth spur gear And a fifth lower part which is movable in the x-axis direction with respect to the sewing machine frame, has a lower thread shuttle fixed to the tip, and is engaged with the needle plate so as to be integrally movable in the x-axis direction. A shaft, and is linked to the first forked rod via a link mechanism;
A needle plate and shuttle that moves the fifth lower shaft by the same amount in the same direction with respect to the movement of the needle bar support in the x-axis direction while maintaining the engaged state of the fourth and fifth spur gears; A moving mechanism, linked to the second forked rod via a link mechanism,
While maintaining the engagement state of the third and fourth screw gears and the first and second spur gears, the second lower shaft is moved in accordance with the amount of movement of the needle bar support in the y-axis direction. An embroidery sewing machine comprising: a non-constant speed rotation mechanism of a shuttle that moves in an x-axis direction;