JPH07258957A - Holder frame drive unit in sewing machine - Google Patents

Abstract

PURPOSE:To enable sewing over almost the whole region of the side peripheral plane of a cylindrical object to be sewn, e.g. a hat. CONSTITUTION:This holder frame drive unit in a sewing machine is equipped with a drive unit (raw fabric frame) 16 driven in both the X and Y directions based on the frame-driving data of the machine, a support unit 30 attached to a hook saddle 20 of the sewing machine in a state in which it can be freely shifted straight in the direction of Y and a drive ring 40 capable of making one or more revolutions around the axis of the Y direction correlative to the support unit 30 and supported so as to shift together with the support unit 30 in the direction of Y. This holder frame drive unit is also equipped with a transmission mechanism 50 capable of transmitting a drive of the drive unit 16 in the direction of X to the drive ring 40 in the form of its rotational motion, and also transmitting a drive of the drive unit 16 in the direction of Y to the support unit 30 in the form of a straight motion and a holder frame 60 holding a cylindrical material (hat) 70 to be sewn in a state in which it can be sewn over almost the whole region of the side peripheral surface and mounted to the drive ring 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when performing sewing such as embroidery on the side peripheral surface of a cylindrical workpiece such as a hat, holds the workpiece and drives necessary for sewing. The present invention relates to a holding frame drive device in a sewing machine for giving a movement.

[0002]

2. Description of the Related Art For example, in Japanese Examined Patent Publication No. 4-40467, a movable frame (original frame) driven in both X and Y directions based on embroidery data of a sewing machine is used as an object to be embroidered (sewn product). A technique is disclosed in which a cylindrical cap frame capable of setting a certain cap is rotated about its axis and is linearly moved along the axis of rotation. The cap frame is divided into a first member that receives the drive of the movable frame and a second member that is detachably attached to the first member. The cap is set on the outer circumference of the second member, and an embroidery window for opening the embroidery planned portion of the cap is opened in the second member.

[0003]

In the technique of the above publication, when an embroidery, which is a kind of sewing, is to be performed over a wide area in the circumferential direction of a side peripheral surface of a hat to be sewn, the movable frame of the movable frame It is possible to drive the cap frame to rotate once around its axis. However, the second member on which the hat is set has a configuration in which the embroidery window is opened in advance in the embroidery planned portion of the hat, so that ultimately, embroidery can be performed only within the range of the embroidery window. The problem to be solved by the present invention is to enable sewing over almost the entire area of a side peripheral surface of a tubular article to be sewn such as a hat.

[0004]

In order to solve the above-mentioned problems, the holding frame driving device in the sewing machine of the present invention is constructed as follows. First, the structure according to claim 1 comprises a drive body which is driven in both X and Y directions based on frame drive data of the sewing machine, and a support body which is linearly movable in the Y direction with respect to the base of the sewing machine. , Relative rotation with respect to this support is possible for one rotation or more around the Y-direction axis, and Y
The drive ring supported so as to move together with the support body in the direction, and the drive of the drive body in the X direction can be transmitted to the drive ring as its rotational operation, and the drive of the drive body in the Y direction can also be transmitted. A transmission mechanism capable of transmitting the linear movement to the support body, and a holding frame mounted on the drive ring in a state where a tubular workpiece is set to be sewable over substantially the entire side surface thereof. There is. The structure according to claim 2, wherein the driving body is an original frame used when sewing a flat material to be sewn, and the supporting body is detached from the shuttle base while the driving ring is supported. Movably mounted, and the transmission mechanism is removably mounted to the drive body.

[0005]

According to the structure of the present invention, when the drive body is driven in the X and Y directions based on the frame drive data of the sewing machine, the drive ring is moved in the Y direction with respect to the support body through the transmission mechanism. Rotates about the axis of and also moves linearly with the support along the axis of the Y direction. Therefore, the tubular sewn object such as a hat attached to the drive ring by the holding frame is rotationally driven around its axis based on the frame drive data, and is linearly driven along the axis. To be done. The holding frame can be set so that the material to be sewn can be sewn over almost the entire area of its side peripheral surface,
Further, since the drive ring can be rotated once or more about the axis line in the Y direction, it is possible to sew a wide range on the side peripheral surface of the workpiece.

According to a second aspect of the present invention, the drive body driven in the X and Y directions based on the frame drive data is an original frame, and the support body is attached to and detached from the hook base of the sewing machine. By attaching and detaching the transmission mechanism to and from the drive body, the holding frame drive device for the tubular workpiece can be collectively attached and detached from the sewing machine side. This simplifies the work of converting the specifications of the sewing machine for sewing on a material to be sewn such as a hat, or for sewing on a material to be sewn such as an ordinary flat cloth.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. Example 1 FIG. 1 is a plan view of a multi-head sewing machine. In this type of sewing machine, a plurality of (four in the drawing) cylinder-shaped hook bases 20 extending in the front direction are arranged on the lower surface of the sewing machine table 10 along the width direction (left-right direction) of the sewing machine. The upper surface of each of the hook bases 20 is flush with the sewing table 10, and needle plates 22 each having a needle hole 23 are provided near the respective tips. In addition, a part of the plane of the sewing machine table 10 including the area in which the respective hook bases 20 are arranged is an elevating part 10a that can be moved up and down, and is normally held at the same height as the upper surface of the hook base 20. There is. Although the sewing machine heads are respectively located above the respective hook bases 20, these sewing machine heads are not shown.

An X-axis drive unit 12 and a Y-axis drive unit 14 are arranged on the lower surface of the sewing machine table 10. The X-axis drive unit 12 is reciprocally driven in the X direction by driving a pulse motor based on frame drive data for embroidery, which is a type of sewing. The belt is driven to reciprocate in the Y direction by driving the pulse motor based on the driving data.

On the other hand, on the upper surface of the sewing machine table 10, there is provided an original frame 16 as a driving body which is interlocked with the driving of the X-axis driving section 12 and the Y-axis driving section 14.
That is, the original frame 16 is configured to reciprocate in both the X and Y directions by driving the belts of the X-axis drive unit 12 and the Y-axis drive unit 14. It should be noted that a material to be sewn, such as a flat cloth, is usually set on the original frame 16, and even in this case, a large area original cloth is directly set and a small area cloth is set. In some cases, a plurality of embroidery frames are attached.

FIG. 2 is a perspective view showing a holding frame driving device for a hat, which is a tubular workpiece, and FIG. 3 is a front view thereof. FIG. 4 is a cross-sectional view showing the holding frame driving device with the hat 70 attached. As shown in these drawings and the phantom line in FIG. 1, the holding frame driving device for the cap is attached to each part of the hook base 20, and in this case, the elevating part 10a of the sewing machine table 10 is lowered. ing. As is apparent from FIG. 3, a shuttle 24 is built in the shuttle base 20 below the needle plate 22. The shuttle 24 is rotationally driven in synchronization with the vertical movement of the sewing needle 19 attached to the lower end of the needle bar 18 on the sewing machine head side. Due to the cooperation of the sewing needle 19 and the shuttle 24, a stitch formed by the entanglement of the upper thread and the lower thread is formed on the object to be sewn (such as a hat or a flat cloth) located on the needle plate 22. As is well known.

Next, the holding frame driving device for the hat will be described. First, the bottom surface of each of the pot bases 20 shown in FIGS.
The rail 32 is attached by a bolt 32a as shown by. A slider 34 is attached to the rail 32 so as to be movable in the longitudinal direction of the pot base 20 (the Y direction described above), and a bracket 36 is attached to the lower surface of the slider 34 with a bolt 36a. Further, as shown in FIG.
Support 30 using a plate having a shape that avoids interference with zero
Are fixed with bolts 30a. Therefore support 3
0 can be linearly moved in the Y direction along the rail 32 with respect to the pot base 20 together with the slider 34.

A support plate 26, which is curved in an arc shape so as to cover the upper surface of the pot base 20, is fixed to the front surface of the support body 30 by a bracket 28. The support plate 26 is for partially supporting the inner circumference of the cap 70, which is a tubular workpiece, and is used to support the needle plate 22 of the hook base 20.
The portion corresponding to the needle hole 23 is a slit 27 which is continuous over the range of linear movement of the support 30 in the Y direction. Further, on the front surface of the support body 30, a total of three support rollers 3 are provided at the left and right of the upper portion and the center of the lower portion.
8 are provided. Each of the support rollers 38 has a corresponding one of the roller shafts 3 whose one end is coupled to the support 30.
9 is rotatably supported with respect to 9 (mainly refer to FIG. 4).

The drive ring 40 is formed in a cylindrical shape, and its inner peripheral surface is supported by each of the support rollers 38. Further, the base end portion of the drive ring 40 (support 30
A flange 41 is integrally formed on the outer circumference of the side end portion), and the flange 41 is slidably held by three guides 44 fixed to the support body 30. In other words, the drive ring 40 is capable of performing full rotation (rotation of one rotation or more) around the axis of the Y direction with respect to the support 30, and moving together with the support 30 in the axial direction (Y direction). Supported by. The outer periphery of the drive ring 40 on the free end side is a mounting surface 42 of a holding frame, which will be described later.

Next, the transmission mechanism 50 for transmitting the drive of the original frame 16 in the X and Y directions to the drive ring 40 will be described. First, a transmission plate 52 is attached to the upper surface of the original frame 16 by a plurality of bolts 52a, and a pair of left and right blocks 56 are fixed to the front surface of the transmission plate 52. An annular groove 46 formed on the outer circumference of the drive ring 40 is formed in both of these blocks 56.
The ends of the single wire 58 wound around are connected to each other. The wire 58 is fixed to the drive ring 40 at a part of its outer circumference. Therefore, when the original frame 16 reciprocates in the X direction, the wire 58
The drive ring 40 reciprocally rotates with respect to the support body 30 through the setting of the distance between the blocks 56 and the drive ring 40.
Depending on the number of turns of the wire 58 with respect to
It is also possible to rotate at least one revolution.

Further, on the lower surface of the transmission plate 52, as apparent from FIG. 4, a groove portion 54 which is constantly engaged with a part of the flange 41 of the drive ring 40 is integrally formed. The groove 54 and the flange 41 are engaged with each other by the original frame 16
The only drive in the Y direction is from the transmission plate 52 to the drive ring 40.
The drive of the original frame 16 in the X direction is released. As a result, the drive in the Y direction of the original frame 16 is transmitted to the support 30 through the drive ring 40, and the support 3
0 moves linearly with the drive ring 40 with respect to the pot base 20.

On the mounting surface 42 of the drive ring 40, a cylindrical holding frame 60 is mounted by a lock mechanism (not shown) as shown in FIG. The outer periphery of the holding frame 60 on the free end side is a setting surface 61, and an opening of a cap 70, which is one of the tubular workpieces, is set by a fixing ring 64. 5 and 6 are perspective views showing a state before and after the setting of the hat 70 on the holding frame 60, respectively.
As is clear from these drawings, the cap 70 has its opening covered on the set surface 61 of the holding frame 60, and then the fixing ring 64 is attached to the outer periphery thereof and both ends thereof are locked by the hook locks 65. It is set on the holding frame 60 by. The hat 70 in this set state can be sewn (embroidered) over almost the entire area of its side peripheral surface.

As is apparent from FIG. 5, an annular groove 62 is formed in the setting surface 61 of the holding frame 60, and the setting surface 61 of the holding frame 60 and the cap 70 are relative to each other in the axial direction. I try to suppress the dynamic movement. However, the groove 62 is not always necessary depending on the type and area of sewing (embroidery) on the hat 70.

Next, an operation for performing embroidery, which is a kind of sewing, on the hat 70 will be described. First, as described above, the hat 70 is mounted on the mounting surface 42 of the drive ring 40 with the holding frame 60 set so that it can be embroidered over almost the entire side surface. Then, when the sewing machine is started, the original frame 16 is driven in the X and Y directions by the frame drive data based on the embroidery pattern. By driving the original frame 16 in the X direction, the drive ring 40 rotates about the axis in the Y direction,
The support 30 is interlocked with the driving of the original frame 16 in the Y direction.
Moves linearly along the Y direction together with the drive ring 40.

Therefore, the drive ring 4 is held by the holding frame 60.
The cap 70 attached to the head is driven to rotate and linearly drive based on the frame drive data, and predetermined embroidery is performed on the side peripheral surface of the cap 70 by the cooperation of the sewing needle 19 and the shuttle 24 described above. . Further, the hat 70 is set so that it can be embroidered over substantially the entire side surface thereof, and the drive ring 40 can be rotated one or more revolutions by driving the original frame 16 in the X direction. Embroidery can be performed over a wide range of the side peripheral surface of the hat 70. During the embroidery, the embroidered portion of the side peripheral surface of the cap 70 located on the upper surface of the needle plate 22 is supported from the inside by the support plate 26. As a result, the sewn portion is always kept properly tensioned without wrinkles or the like. However, the support plate 26 may be omitted when embroidery is performed by disposing a tubular core material inside the hat 70.

When embroidering by directly or indirectly setting a sewn object such as a flat cloth on the original frame 16, first, with the holding frame 60 removed from the drive ring 40, The support 30 is removed from the base 20. As shown in FIG. 4, the removal of the support 30 is performed by the rail 3
The bolts 32a to which the brackets 2 are attached may be loosened and removed from the pot base 20, or the bolts 36a to which the bracket 36 is attached may be loosened and removed from the slider 34. In parallel with this, the transmission plate 5 of the transmission mechanism 50
2 is removed from the original frame 16 by loosening its bolt 52a.
As a result, the support 30, the drive ring 40, and the transmission mechanism 5
The wires 58 of 0 are collectively removed from the sewing machine side. After that, if the elevating part 10a of the sewing machine table 10 shown in FIG. 1 is raised to the same height as the upper surface of the hook base 20, the sewing machine becomes a specification for embroidery sewing on a flat workpiece.

Embodiment 2 FIG. 7 is a perspective view showing a modification of the fixing ring 64 in the holding frame 60. FIG. 7A shows an example of a rubber belt formed in an annular shape, and FIG. 7B shows an example of using a garter spring or the like.

Embodiment 3 FIG. 8 is a perspective view showing a modified example of the holding frame 60, and FIG.
FIG. 7 is a cross-sectional view of a state in which the hat 70 is set. In this embodiment, the holding frame 60 is provided with two pins 66 protruding from the flange 63 in parallel with its axis. These pins 66 are located inside the cap 70 set on the holding frame 60 as shown in FIG. 9, and a part of the side peripheral surface of the cap 70 is fixed to the pins by clips 67 from the outside. In this way, the setting position of the hat 70 with respect to the holding frame 60 is determined in advance, and then the opening portion of the hat 70 is fixed to the setting surface 61 of the holding frame 60 by a fixing ring such as a rubber belt shown in FIG. 7A. Set at 64. As a result, the hat 70 is accurately set on the holding frame 60.

Embodiment 4 FIG. 10 is a perspective view showing an example in which the holding frame 60 is further modified. The holding frame 60 of this embodiment has a set surface 61.
The auxiliary setting surface 86 is provided at a predetermined interval in a direction along the axis. This auxiliary set surface 86
Is for supporting the inner circumference near the top of the hat 70, so that the position of the auxiliary setting surface 86 can be moved and adjusted along the axis according to the width of the side circumferential surface of the hat 70 (hat depth). Has become.

Further, in the fourth embodiment, a frame-shaped fixing ring 80 having a main pressing portion 80a and an auxiliary pressing portion 80b respectively corresponding to the setting surface 61 and the auxiliary setting surface 86 of the holding frame 60 is used. . One end of the fixing ring 80 is rotatably connected to a bar 88 fixed to the flange 63 of the holding frame 60, and a hook lock 82 is attached to the other end. This fixing ring 8
Regarding 0, the main pressing portion 80a and the auxiliary pressing portion 80b are adjusted in accordance with the movement adjustment of the auxiliary setting surface 86 of the holding frame 60.
It has a structure that allows you to adjust the distance between and.

In the fourth embodiment, when the opening surface of the hat 70 is put on the setting surface 61 of the holding frame 60, the hat 7
The inner circumference near the top of the 0 is supported by the auxiliary setting surface 86. Therefore, the main pressing portion 80a of the fixing ring 80
And the auxiliary pressing portion 80b from the outside of the hat 70 to the setting surface 6
1 and the auxiliary setting surface 86 are wound together, and the hook lock 82 is hooked on the hook 87 of the holding frame 60 to be locked. When the holding frame 60 of the fourth embodiment is used, the mounting state of the hat 70 on the drive ring 40 is stable, and the posture of the hat 70 during embroidery is maintained in a good condition. Therefore, also in this case, the support plate 26 can be eliminated.

Embodiment 5 FIG. 11 is a perspective view showing a modified example of the holding frame driving device, FIG.
2 is a front view thereof, and FIG. 13 is a cross-sectional view showing the holding frame drive device with the cap 70 attached. As shown in these drawings, in this embodiment, the retainer 92 is attached to the lower surface of the pot base 20 with a plurality of bolts 92a. The retainer 92 is integrally formed with sleeves 94 at a total of three places, that is, the upper left and right sides and the lower center, and the axes of the respective sleeves 94 are set to be parallel to the Y-direction axis. .

Each sleeve 94 of the retainer 92 has:
As is apparent from FIG. 13, the rod-shaped supports 90 are supported by linear bearings 95 so as to be linearly movable in the Y direction. Moreover, rollers 98 are provided around the outer circumference of the tip of each support 90, and are rotatable about their respective axes.
Moreover, the movement in the axial direction is regulated by the snap ring and assembled. The inner circumference of the drive ring 40 is rotatably supported by these rollers 98. However, the drive ring 40 is a flange 9 formed at both ends of each roller 98.
The rollers 98 are supported between the rollers 8a and 8a, and their relative movement in the Y direction with respect to these rollers 98 (and each support 90) is restricted. Since the other configurations are the same as those in the first embodiment, the description thereof will be omitted.

In the fifth embodiment, when the original frame 16 reciprocates in the X direction, the drive ring 40 reciprocally rotates with respect to the support 90 through the wire 58 of the transmission mechanism 50. The driving of the original frame 16 in the Y direction is transmitted to the support 90 through the drive ring 40 and each roller 98, and the support 90 moves linearly with the drive ring 40 with respect to the retainer 92. Therefore, the original frame 16 based on the above frame drive data
Driving in the X and Y directions causes the drive ring 40 to rotate about the axis in the Y direction as in the first embodiment, and the support 9
0 moves linearly with the drive ring 40 along the Y direction.

Transmission mechanism 5 of the above-mentioned first and fifth embodiments
At 0, the drive ring 40 drives the original frame 16 in the X direction.
The wire 58 is used as a means for converting and transmitting it to the rotation of the gear. The wire 58 is a gear formed by meshing of a metal belt, a timing belt, or a rack formed on the transmission plate 52 and a ring gear formed on the outer periphery of the drive ring 40. It is of course possible to replace it with a mechanism or the like.

[0030]

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to sew a side peripheral surface of a cylindrical sewn object such as a hat over substantially the entire area thereof. It is possible to easily change the specifications of the sewing machine for sewing a normal object to be sewn such as a flat cloth.

[Brief description of drawings]

FIG. 1 is a plan view of a multi-head sewing machine.

FIG. 2 is a perspective view showing a holding frame driving device for a hat.

FIG. 3 is a front view showing a holding frame driving device for a hat.

FIG. 4 is a cross-sectional view showing a holding frame drive device with a hat attached.

FIG. 5 is a perspective view showing a state before the hat is set on the holding frame.

FIG. 6 is a perspective view showing a state in which a hat is set on the holding frame.

FIG. 7 is a perspective view showing a modified example of a fixing ring.

FIG. 8 is a perspective view showing a modified example of a holding frame.

9 is a cross-sectional view of a state in which a hat is set on the holding frame of FIG.

FIG. 10 is a perspective view showing a further modified example of the holding frame.

FIG. 11 is a perspective view showing a modified example of a holding frame driving device.

12 is a front view showing the holding frame drive device of FIG. 11. FIG.

13 is a sectional view showing the holding frame driving device of FIG.

[Explanation of symbols]

 16 Driver (Fabric Frame) 20 Kettle Base 30, 90 Support 40 Drive Ring 50 Transmission Mechanism 60 Holding Frame 70 Cylindrical Sewn Object (Hat)

Claims (2)

[Claims] 1. X, Y based on frame drive data of the sewing machine
A drive body that is driven in both directions, a support body that is attached to the base of the sewing machine so as to be linearly movable in the Y direction, and a relative rotation of one rotation or more around the Y direction axis line with respect to this support body. A drive ring that is capable of being supported so as to move together with the support body in the Y direction, and the drive of the drive body in the X direction can be transmitted to the drive ring as its rotational movement, and also the Y of the drive body can be transmitted. A transmission mechanism capable of transmitting a directional drive to the support as its linear motion, and a holding mechanism that is attached to the drive ring in a state in which a tubular workpiece is set to be sewable over almost the entire side surface thereof. A holding frame drive device in a sewing machine, comprising: a frame. 2. The drive body is an original frame used when sewing a flat material to be sewn, and the support body is detachably attached from the shuttle base while the drive ring is supported. 2. The holding frame drive device for a sewing machine according to claim 1, wherein the transmission mechanism is detachably attached to the drive body.