JPH06313258A - Hat frame apparatus for embroidery machine - Google Patents

Abstract

PURPOSE:To provide a hat frame apparatus for embroidery machine, capable of surely preventing the vibration of a rotary frame and easily attachable to and detachable from an embroidery machine. CONSTITUTION:When a mobile frame is driven in the direction of Y axis, a Y axis transfer member 28 is driven in the direction of Y axis to move a rotary frame 40 in the direction of axis through a Y axis transfer transmission mechanism. When the mobile frame is driven in the direction of X axis, an X axis driving force is converted to the rotational driving force of the rotary frame with an X axis driving force conversion mechanism 60 to rotate the rotary frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap frame device for an embroidery sewing machine, and more particularly to an improved cap frame device for moving and driving the cap frame in the Y-axis direction (direction parallel to the arm portion of the embroidery sewing machine).

[0002]

2. Description of the Related Art Conventionally, in order to sew a colorful embroidery pattern embroidered with a plurality of colors of embroidery threads, a needle bar case having a plurality of needle bars is horizontally provided at the front end of a sewing machine arm in the row direction of the needle bars. A multi-needle type embroidery sewing machine, which is movably supported, has been put to practical use. Generally, in a multi-needle type embroidery sewing machine, a work cloth to be embroidered is set in an embroidery frame, and the embroidery frame is independently driven in the X direction and the Y direction (direction parallel to the arm portion of the embroidery sewing machine). Embroidery sewing is executed with the movable frame being attached.

By the way, a cap frame device connected to the X-axis drive mechanism and the Y-axis drive mechanism of the movable frame is used for embroidery sewing on the front surface of the cap. The hat frame device includes a base frame that is supported so as to be movable only in the Y-axis direction, a rotating frame that is rotatably attached to the base frame about an axis parallel to the Y-axis direction, and the detachable frame. A structure having a hat frame mounted on the bed and a structure in which the base frame is omitted and the rotating frame and the hat frame are pivotally supported on the bed body by the guide shaft have been put into practical use. . The base frame is operatively connected to the Y-axis driving mechanism to move and drive in the Y-axis direction, and the rotating frame and the cap frame are operatively connected to the X-axis driving mechanism to move in the X-axis direction. It is rotationally driven via a conversion mechanism that converts the drive amount into a rotational amount about an axis parallel to the Y axis.

Among the conventional hat frame devices, in the latter hat frame device having a structure mainly composed of a guide shaft, a rotating frame and a hat frame, a guide groove is formed on the outer peripheral portion of the rotating frame. Then, a rod of a predetermined length in the X-axis direction fixedly attached to the movable frame of the embroidery sewing machine is slidably engaged with the top of the guide groove so that the movable frame is moved in the Y-axis direction. , A transmission mechanism that transmits the rotation frame through the rod and the guide groove is adopted. The rotary frame is rotationally driven via an X-axis drive force conversion mechanism that converts the X-axis drive force of the movable frame into the rotary drive force of the rotary frame.

[0005]

By the way, the rod has a relatively small diameter, has a length of 40 to 50 cm, and is fixed to the movable frame at both ends. And, to prevent back and forth movement of the rotating frame,
The rod is in sliding contact with the front and rear wall surfaces of the guide groove of the rotary frame without a gap at the center of the span.

Therefore, when the rotating frame is driven to rotate, the frictional resistance acting between the front and rear wall surfaces of the guide groove of the rotating frame and the rod is large, and the span center portion of the rod is weakly restrained. Since it is easy to vibrate, the rotating frame and the cap frame vibrate when the rotating frame is driven to rotate,
There is a problem that the quality of the finished embroidery sewing deteriorates due to the vibration. Further, since both ends of the rod are fixed to the movable frame with screws or bolts, the work for attaching and detaching the hat frame device to the embroidery sewing machine is not easy. An object of the present invention is to reliably prevent vibration of the rotating frame, and
It is an object of the present invention to provide a hat frame device for an embroidery sewing machine that can be easily attached to and detached from the embroidery sewing machine.

[0007]

According to a first aspect of the present invention, there is provided a hat frame device for an embroidery sewing machine, the guide shaft extending in the Y-axis direction parallel to the arm of the embroidery sewing machine, and the guide shaft being detachably attached to the bed body. A turning frame for a hat frame set which is mounted on the guide shaft so as to be movable in the Y-axis direction and rotatable about the guide shaft; and a hat frame which is detachably mounted on the turning frame. An embroidery sewing machine including an X-axis drive force converting mechanism that applies a rotational drive force to a rotating frame from a movable frame that is independently driven to move in the Y-axis direction and the X-axis direction of the embroidery sewing machine through a pair of wires. In the hat frame device for a hat, the movable frame is disposed along an X-axis frame portion extending in the X-axis direction, is movable in the X-axis direction relative to the X-axis frame portion, and is relatively movable in the Y-axis direction. An impossible Y-axis feed member is provided, and the Y-axis feed member is attached to the rotary frame. It is provided with a Y-axis feed transmission mechanism for interlocking connection to.

A cap frame device for an embroidery sewing machine according to a second aspect is the device according to the first aspect, wherein the Y-axis feed transmission mechanism includes a connecting member for connecting the Y-axis feed member to a rotating frame, and the Y-axis feed. A predetermined mounting portion formed on the member, and a clamp mechanism capable of fixing the base end portion of the connecting member to the predetermined mounting portion in a releasable manner are provided.

[0009]

In the hat frame device for an embroidery sewing machine of claim 1, when the movable frame is driven in the Y-axis direction, the Y-axis feed member is driven in the Y-axis direction, and the Y-axis feed member is moved in the Y-axis direction. Thus, the rotary frame is axially moved and driven via the Y-axis feed transmission mechanism. When the movable frame is driven in the X-axis direction,
The X-axis direction driving force is converted into the rotation driving force of the rotation frame by the X-axis driving force conversion mechanism, and the rotation frame is rotated. Since the Y-axis feed member and the Y-axis feed transmission mechanism are provided in this manner, the vibration factor of the rotating frame can be eliminated and the quality of embroidery sewing can be improved.

In the cap frame device for an embroidery sewing machine according to a second aspect of the present invention, the Y-axis feed transmission mechanism includes a connecting member, a mounting portion formed on the Y-axis feeding member, and a base end portion of the connecting member on the mounting portion. Since a clamp mechanism that can be fixedly released from the lower side is provided, the Y-axis feed transmission mechanism can be easily connected / disconnected to / from the embroidery sewing machine by fixing / unfixing the clamp mechanism. .

[0011]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is a case where the present invention is applied to a hat frame device for a multi-needle type embroidery sewing machine provided in a multi-head type embroidery machine. The multi-head embroidery machine SM will be described. As shown in FIG. 1, a substantially rectangular sewing machine support plate 2 extending in the left-right direction is provided on the rear side of the upper surface of the embroidery machine base frame 1 extending in the left-right direction (X direction). Are arranged, and three multi-needle type embroidery sewing machines M1 having the same structure are provided on the sewing machine support plate 2.
M3s are arranged side by side with a space left and right.

In each of the embroidery sewing machines M1 to M3, twelve needle bars (not shown) arranged in a row in the left-right direction are supported at the front end of the arm portion 3 so as to be vertically movable, In addition, needle bar cases 7 that swingably support twelve balances 9 are horizontally supported so as to be horizontally movable. On the other hand, the pillar portion 4 is connected to the arm portion 3, and the pillar portion 4
The bed body 5 connected to the lower end of the bed is fixed on the sewing machine support plate 2, the cylinder bed 6 extends forward from the front end of the bed body 5, and the tip of the cylinder bed 6 has a thread catcher. A container (not shown) is provided.

As shown in FIG. 1, a sewing needle 8 is attached to the lower end of each needle bar, and twelve sewing needles 8 are provided with twelve thread stands 11 of a thread stand 10 and embroidery threads of 12 colors. One of the needle bars is selected by moving the needle bar case 7 supplied in each direction and moving the needle bar case 7 in the left-right direction to position one desired sewing needle 8 at the sewing position facing the needle hole at the tip of the cylinder bed 6. Then, only the needle bar and the balance 9 corresponding thereto are driven up and down, and the embroidery stitches on the work cloth are embroidered with the embroidery thread of the selected color in cooperation with the sewing needle 8 of the needle bar and the thread catcher. It is formed.
Here, an upper shaft for vertically moving the needle bar or the balance 9 and a lower shaft (not shown) for rotating the thread catcher are drive shafts that are rotationally driven by a V belt 17 connected to a sewing machine motor (not shown). It is driven by 18.

On the front side of the sewing machine support plate 2, there is disposed a work table 13 having the same height as the upper surface of the cylinder bed 6, and the work table 13 and the left and right sides of the work table 13 are provided. A pair of auxiliary tables 14,
A movable frame 16 extending in the left-right direction is placed over the area 15. The drive frame portion 16a at the right end of the movable frame 16 is moved and driven in the X direction by an X-axis drive mechanism (not shown),
The drive frame portion 16b and the drive frame portion 16a at the left end thereof are simultaneously moved and driven in the Y direction by a Y-axis drive mechanism (not shown). That is, the movable frame 16 is driven to move independently on the tables 13 to 15 in the X and Y directions by the X-axis drive mechanism and the Y-axis drive mechanism.

Next, a cap frame device attached to each embroidery sewing machine will be described. As shown in FIGS. 2 to 4, the cap frame device 20 includes a guide shaft 21 extending in the Y-axis direction, a rotating frame 40 rotatably mounted on the guide shaft 21, and a cap on the rotating frame 40. X for converting the driving force of the movable frame 16 in the X-axis direction into the rotation driving force of the rotation frame 40 and the rotation of the hat frame 50.
The axial drive force conversion mechanism 60 and the Y-axis drive mechanism, which is disposed below the X-direction frame portion 16c on the rear end side of the movable frame 16
The Y-axis feed transmission mechanism 7 that operatively connects the base frame 30 to the Y-axis feed member 28 that is driven and moved only in the axial direction.
0, etc.

Explaining the guide shaft 21, the guide shaft 21 is a bed main body portion 5 on the base end side of the cylinder bed 6.
It is detachably mounted from the front into a horizontal mounting hole 22 formed in the Y-axis direction and is fixed to the bed body 5 by a fixing tool 23 so that the fixing can be released. Next, the rotating frame 4
0 will be described with reference to FIG.
An arc member 41 having an arcuate cross section of 0 degree is provided, and the wire 6 of the X-axis driving force converting mechanism 60 is provided on the outer peripheral portion of the arc member 41.
3, a wire guide groove 43 for guiding 3 is formed, and an outer peripheral portion of the arc member 41 is engaged with an engaging hole of the cap frame 50 fitted to the arc member 41 so as to rotate the cap frame 50. 40
Four engaging rollers 45, which are detachably held, are elastically biased by a spring member. A frame body member 44 that connects the left and right lower end portions of the arc member 41 is provided, and the left and right end portions of the arc member 41 are fixed to the corresponding end portions of the frame body member 44 with four screws 46. Has been done.

A tubular portion 47 is integrally formed at the center of the span of the frame body member 44, and an axial hole 48 concentric with the center of the arc member 41 is formed in the tubular portion 47, and the guide shaft 21 is The rotating member 40 is inserted into the shaft hole 48, and
It is configured to be rotatable around 1. Next, the cap frame 50 will be described. In the cap frame 50, an arc-shaped mounting portion 5 that is externally fitted to the arc member 41 of the rotating frame 40.
1 and a frame-shaped portion 52 extending to the front side thereof are formed, four attachment holes for respectively engaging the four engagement rollers 45 are formed in the attachment portion 51, and the frame-shaped portion 52 has a cap. An opening 53 corresponding to the embroidery area is formed, and a cap member 54 made of a spring member can hold the hat.

Next, the X-axis driving force converting mechanism 60 will be described. The converting mechanism 60 is fixed to the upper surface of the X-direction frame portion 16c on the rear end side of the movable frame 16 with screws 65 left and right at predetermined intervals. A pair of left and right mounting plates 61, a rod 62 connecting the both mounting plates 61, and a pair of wires 63 are mainly configured. The left end of the first wire 63 is connected at one end to a metal fitting 64 fixed to the left mounting plate 61, and the wire 63 passes through the wire guide groove 43 of the rotating frame 40 and reaches the right end of the wire guide groove 43. And is fixed to the right end of the rotating frame 40 with a screw 66,
In addition, the right end of the second wire 63 is attached to the right mounting plate 61.
One end of the wire 63 is connected to a metal fitting 64 fixed to the wire frame 43. The wire 63 is guided to the left end side of the wire guide groove 43 through the wire guide groove 43 of the rotating frame 40, and is screwed to the left end portion of the rotating frame 40. It is fixed at 66.

Therefore, when the movable frame 16, that is, the X-direction frame portion 16c is driven to move leftward, the rotating frame 40
Is rotated in the counterclockwise direction in FIG. 4 around the axis of the arc member 41 (that is, around the guide shaft 21), and when the X-direction frame portion 16a is driven to move rightward, The moving frame 40 is rotated clockwise around the axis of the arc member 41. The rotation angle of the rotation frame 40 is
It is proportional to the amount of horizontal movement of the X-direction frame portion 16c.

Next, the Y-axis feed transmission mechanism 70 will be described. The transmission mechanism 70 is connected to the connecting member 71 for connecting the Y-axis feed member 28 to the rotating frame 40, and is attached to the connecting member 71. A clamp mechanism 72 for fixing the base end of the member 71 to the Y-axis feed member 28 in a releasable manner.
And the wire guide groove 4 fixed to the front end of the connecting member 71.
The main component is an engaging member 73 slidably engaged with 3.

The Y-axis feed member 28 has a frame portion 16 in the X direction.
It is a long member extending in the X direction along the lower surface side of c, and the Y-axis feed member 28 is formed with a predetermined mounting portion 76 for detachably connecting the connecting member 71.
As shown in FIG. 2, a circular hole 77, a small-diameter long hole 78 continuous to the left end in the X direction, and a pair of X directions formed on both sides of the circular hole 77 and the long hole 78 are shown in FIG. Oriented slits 79 are formed.

The connecting member 71 is disposed below the Y-axis feed member 28 on the cylinder bed 6, and the flat plate portion 7 corresponding to the mounting portion 73 is provided at the base end portion of the connecting member 71.
4 is formed, the flat plate portion 7 is formed on the connecting member 71.
4 has a V-shaped connecting arm portion 75 extending forward and having a shallow cross section. The lower half surface of the left end portion of the front end portion of the connecting arm portion 75 has
The engaging member 73 is fixed to the wire guide groove 43 in an inclined shape equal to the inclination of the corresponding portion. This engaging member 73
Is made of a low-friction synthetic resin material (for example, nylon) so that the contact resistance with the wire guide groove 43 becomes small. The engaging member 73 may be formed by rolling guide means such as rollers and rollers. On the upper surface of the flat plate portion 74 of the connecting member 71, a pair of left and right positioning pins 80 that engage with the pair of slits 79 are provided upright.

Next, the clamp mechanism 72 provided in the Y-axis feed transmission mechanism 70 will be described. In the clamp mechanism 72, the top plate portion 82 that enters the circular hole 77 and the top plate portion 8 are provided.
A shaft member 8 having a vertical shaft portion 83 continuous with the lower surface of
The shaft member 81 has a threaded portion formed in the lower half portion thereof, and a thumbscrew 85 screwed to the threaded portion through a washer 84. When the flat plate portion 74 of the connecting member 71 is fixed to the mounting portion 76 of the Y-axis feed member 28 by the clamp mechanism 72, the thumbscrew 85 is loosened and the top plate portion 82 is held while the shaft member 81 is held at the fixing release position. Is inserted through the circular hole 77, and a pair of positioning pins 80
Is fitted in the pair of slits 79, the shaft member 8
1 is engaged with the long hole 78, and then the thumbscrew 85
When the shaft member 81 is switched to the fixed position by fastening the flat plate portion 74, which is the base end portion of the connecting member 71, the Y-axis feed member 2
It is fixed to the mounting portion 73 of No. 8.

Next, the operation of the hat frame device described above will be described. The rotating frame 40, the X-axis drive force conversion mechanism 60, and the Y-axis feed transmission mechanism 70 are unitized as a hat frame unit, and a mounting method for mounting the hat frame unit on the embroidery sewing machines M1 to M3. Will be described. First, the guide shaft 21 is removed, and the clamp mechanism 7
2 is released and the engaging member 73 is engaged with the wire guide groove 43, the cap frame unit is moved from the front, and the shaft member 81 of the clamp mechanism 72 is positioned immediately below the circular hole 77. Then, when the hat frame unit is moved upward, the top plate portion 82 of the shaft member 81 is inserted into the circular hole 77, and the pair of positioning pins 80 are paired with the pair of slits 79.
It will be in the state of being inserted into. Next, the hat frame unit is moved to the right to engage the shaft portion 83 of the shaft member 81 with the elongated hole 78, and then the clamp mechanism 72 is fixed.

Next, after or before being fixed by the clamp mechanism 72, the guide shaft 21 is moved from the front to the frame body member 44.
Shaft hole 48 of the cylindrical portion 47 of the
Then, the guide shaft 21 is fixed by the fixing tool 23. In this state, the connecting member 71 and the rotating frame 40 can transmit the driving force in the Y-axis direction through the engagement between the engaging member 73 and the wire guide groove 43. Then X
The pair of plate members 61 of the shaft driving force conversion mechanism 60 are positioned on the upper surface of the X-direction frame portion 16c by the positioning pins 64, and then fixed to the upper surface of the X-direction frame portion 16c by the screws 65. When removing the hat frame unit, the hat frame unit can be easily removed by a procedure substantially reverse to that in the above-described mounting.

As described above, except that the pair of screws 65 for fixing the pair of plate members 61 to the X-direction frame portion 16c are mounted.
The hat frame unit can be attached to and detached from the embroidery sewing machines M1 to M3 without attaching or detaching any screws or bolts. However, it is necessary to rotate the fixture 23. Moreover, since the Y-axis feed transmission mechanism 70 is provided with the clamp mechanism 72 so that the connecting member 71 and the Y-axis feed member 28 can be easily fixed and released, the fixing is performed without using screws or bolts. And it became possible to release the fixation.

Next, after mounting the hat frame unit as described above, the hat frame 50 with the hat set separately outside the machine.
When the movable frame 16 is driven in the X-axis direction when the is attached to the rotary frame 40 for embroidery sewing, the rotary frame 40 and the cap frame 50 are rotationally driven by the X-axis drive force conversion mechanism 60, When the movable frame 16 is driven in the Y-axis direction, Y
The shaft feed member 28 is driven in the Y-axis direction, and the rotary frame 40 and the cap frame 50 are separated from each other via the Y-axis feed transmission mechanism 70.
Driven axially.

Since the engaging member 73 is short and made of a low friction material when the rotating frame 40 is rotated, the frictional force acting between the engaging member 73 and the wire guide groove 43 becomes small. As a result, the rotating frame 40 rotates smoothly. Moreover, since the connecting arm portion 75 of the connecting member 71 of the Y-axis feed transmission mechanism 70 has a high rigidity and the engaging member 73 is configured to be less likely to vibrate, when the rotating frame 40 is rotated, the rotating frame 40 is fixed to the rotating frame 40. No extra force is applied from the engaging member 73, and there is no problem that the rotating frame 40 vibrates vertically and the quality of embroidery sewing deteriorates.

Here, a part of the above embodiment may be modified as follows. 1] Instead of the two wires 63 in the above-mentioned embodiment, one continuous wire is used as a plate member 61 on the left side and a screw 6 on the right side.
6, the left screw 66 and the right plate member 61 may be wound in this order. 2] The Y-axis feed transmission mechanism 70 may be provided not only as one set but also as a left and right pair.

3] Instead of the clamp mechanism 72,
The following clamp mechanism may be applied. As shown in FIG. 5, the clamp mechanism 72A includes a shaft member 90 having a top plate portion 91 that enters the circular hole 77 and an upright shaft portion 92 that is continuous with the lower surface of the top plate portion 91, and a front and rear portion of the shaft member 90. The shaft member 90 is pin-coupled with the direction-oriented pin 93.
Is configured to include a control lever 94 that switches between a fixed position in which the switch is moved toward the connecting member 71 and a release position in which the switch is floated above the fixed position. The upper end of the operating lever 94 is formed in a curved shape, and a fulcrum member 95 that supports the curved portion is attached to the connecting member 71. When the operating lever 94 is in the posture shown by the solid line in FIG. 5, the shaft member 90 is fixed. When the operation lever 94 is in the release position and the operation lever 94 is in the posture indicated by the chain line in FIG. 5, the shaft member 90 is in the fixed position. 4] Within the scope of the technical idea of the present invention, various modifications may be made to the mechanism of each part of the above-described embodiment based on existing technology or technology obvious to those skilled in the art.

[0031]

As described above, according to the hat frame device for embroidery sewing machine of the first aspect, since the Y-axis feed member and the Y-axis feed transmission mechanism are provided, the Y-axis feed transmission having a relatively high rigidity is provided. The mechanism connects the Y-axis feed member and the rotating frame,
The vibration factor of the rotating frame can be eliminated, and the quality of embroidery sewing can be improved. According to the hat frame device of claim 2,
The Y-axis feed transmission mechanism is composed of a connecting member, a mounting portion formed on the Y-axis feeding member, and a clamp mechanism capable of fixing the base end portion of the connecting member to the mounting portion so as to be able to be unlocked from below. Thus, by fixing / releasing the clamp mechanism, it is possible to easily connect / disconnect the Y-axis feed transmission mechanism to / from the embroidery sewing machine.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a multi-head embroidery machine according to an embodiment.

FIG. 2 is a plan view of a main part of a hat frame device mounted on the embroidery sewing machine of FIG.

FIG. 3 is a side view of the hat frame device of FIG.

FIG. 4 is a front view of the hat frame device of FIG.

FIG. 5 is a front view of a clamp mechanism of a modified example of the Y-axis feed transmission mechanism of the hat frame device.

[Explanation of symbols]

 M1 to M3 Embroidery sewing machine 3 Arm part 20 Hat frame device 21 Guide shaft 28 Y-axis feed member 40 Rotating frame 50 Hat frame 60 X-axis drive force conversion mechanism 63 Wire 70 Y-axis feed transmission mechanism 71 Connecting member 72, 72A Clamp mechanism 76 Mounting portion 74 Flat plate portion (base end portion of connecting member)

Claims (2)

[Claims] 1. A guide shaft in the Y-axis direction parallel to an arm of an embroidery sewing machine, the guide shaft being detachably attached to a bed body, and the guide shaft being movable in the Y-axis direction. A rotating frame for a cap frame set that is rotatably mounted around the cap frame, a cap frame that is detachably mounted on the rotating frame, and is independently driven to move in the Y-axis direction and the X-axis direction of the embroidery sewing machine. A cap frame device for an embroidery sewing machine, comprising an X-axis drive force conversion mechanism for applying a rotational drive force to a rotary frame from a movable frame via a pair of wires, in the X-axis direction of the movable frame. A Y-axis feed member that is disposed along the extending X-axis frame portion and that can move relative to the X-axis frame portion in the X-axis direction and cannot move relative to the Y-axis direction is provided. Y interlockingly connected to the rotating frame
A cap frame device for an embroidery sewing machine, which is provided with a shaft feed transmission mechanism. 2. The Y-axis feed transmission mechanism includes a connecting member that connects the Y-axis feed member to a rotating frame, a predetermined mounting portion formed on the Y-axis feed member, and a predetermined mounting portion. The cap frame device for an embroidery sewing machine according to claim 1, further comprising a clamp mechanism capable of fixing the base end portion of the connecting member so as to be able to be released.