US20090173261A1 - Embroidery sewing machine - Google Patents
Embroidery sewing machine Download PDFInfo
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- US20090173261A1 US20090173261A1 US11/718,170 US71817005A US2009173261A1 US 20090173261 A1 US20090173261 A1 US 20090173261A1 US 71817005 A US71817005 A US 71817005A US 2009173261 A1 US2009173261 A1 US 2009173261A1
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- machine
- head
- machine heads
- color change
- heads
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/16—Arrangements for repeating thread patterns or for changing threads
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/02—Machine needles
- D05C11/06—Needle-driving or control mechanisms
Definitions
- the present invention relates to embroidery sewing machines for performing sewing on cylindrically-shaped embroidering workpieces, such as bodies of sweaters and T-shirts.
- combination embroideries include a combination of an ordinary multi-color embroidery and a decorative embroidery made by sewing of a tape, string or other material, and an operation for making such combination embroideries is performed today by a dedicated combination-embroidery sewing machine provided with two different types of machine heads intended for multi-color embroidering and decorative embroidering.
- combination embroidery can be performed by a single embroidery sewing machine as long as it is dedicated to combination-embroidery, there has so far been no combination-embroidery sewing machine capable of embroidering a cylindrically-shaped embroidering workpiece, for the following reasons. Namely, in order to embroider a cylindrically-shaped embroidering workpiece, it is necessary to position the rotary hook bed inside the cylindrically-shaped embroidering workpiece, as noted above. Thus, in order to embroider such a cylindrically-shaped embroidering workpiece using two types of machine heads, it is necessary to position two cylindrical rotary hook beds, corresponding to the two machine heads, inside the cylindrically-shaped embroidering workpiece.
- One possible approach for avoiding the above inconveniences is to position only one of the hook bed, corresponding to the machine head to be next used for embroidering, inside the embroidering workpiece; however, when the other machine head is to be next used for embroidering after completion of embroidery by the one machine head, it is necessary to deactivate the embroidery sewing machine to detach and re-attach the embroidery frame in order to switch the rotary hook bed that is to be positioned inside the embroidering workpiece, which would inevitably require extra labor and time. In addition, there are possibilities of part of the embroidering workpiece, hanging down the rotary hook bed, interfering with the rotary hook bed and being stained or impaired. For the foregoing reasons, none of the conventionally-known embroidery sewing machines can not perform combination embroidery by itself.
- an object of the present invention to provide an embroidery sewing machine which can smoothly perform, without any problem, combination embroidery on a cylindrically-shaped embroidering workpiece using a plurality of types of machine heads.
- the present invention provides an improved embroidery sewing machine for a cylindrically-shaped embroidering workpiece, which comprises: a head group comprising two or more machine heads disposed in proximity to each other so that each of the machine heads can perform embroidery sewing on an embroidering area of an embroidery frame on which the cylindrically-shaped embroidering workpiece is set, at least one of the two or more machine heads being a multi-needle machine head having a plurality of needles; a color change mechanism for selectively positioning a desired one of the needles at a predetermined operating position in the multi-needle machine head; a rotary hook bed provided for each of the head group for shared use between the machine heads in the head group and corresponding to one embroidering workpiece; and a horizontal movement mechanism for disposing individual ones of the machine heads and the color change mechanism for horizontal movement relative to the rotary hook beds and horizontally moving the individual machine heads and the color change mechanism together to place any one of the machine heads in each of the head groups in positional
- the present invention can perform different types of embroidery or sewing with the respective machine heads although only one rotary hook bed is to be positioned inside the embroidering workpiece.
- combination embroidery with the plurality of types of machine heads can be performed by one embroidery sewing machine smoothly without any problem.
- the present invention can significantly simplify the construction of the entire horizontal movement mechanism.
- FIG. 1 is a front view of an embroidery sewing machine in accordance with an embodiment of the present invention
- FIG. 2 is a plan view showing the embroidery sewing machine with an upper machine frame and machine heads omitted for clarity;
- FIG. 3 is a sectional side view taken along the I-I line of FIG. 1 ;
- FIG. 4 is an enlarged front view of a color change mechanism and horizontal movement mechanism of the embroidery sewing machine, and (b) of FIG. 4 is a plan view of the color change mechanism and horizontal movement mechanism;
- FIG. 5 is an enlarged side view of one of multi-needle machine heads
- FIG. 6 is an enlarged side view of one of single-needle machine heads
- FIG. 7 is a front view showing, in further enlarged scale, an example specific construction of the color change mechanism, and (b) of FIG. 7 is a sectional side view of the color change mechanism;
- FIG. 8 is a front view showing, in further enlarged scale, an example specific construction of the horizontal movement mechanism, and (b) of FIG. 8 is a sectional side view of the horizontal movement mechanism;
- FIG. 9 is a front view showing, in a further enlarged scale, an example specific construction of a mechanism for transmitting rotation of a main shaft motor to a machine's main shaft disposed in a left region of the front of the sewing machine, and (b) of FIG. 9 is a sectional side view of the rotation transmission mechanism;
- FIG. 10 and (b) of FIG. 10 are a front view and plan view, respectively, showing an example state in which the multi-needle machine head has been placed in positional correspondence to a rotary hook bed;
- FIG. 11 and (b) of FIG. 11 are a front view and plan view, respectively, showing an example state in which a desired sewing needle (color thread) has been selectively slid via the color change mechanism of FIG. 10 .
- FIG. 1 is a front view of an embroidery sewing machine in accordance with an embodiment of the present invention
- FIG. 2 is a plan view showing the embroidery sewing machine with an upper machine frame 1 and machine heads 3 and 4 omitted for clarity
- FIG. 3 is a sectional side view taken along the I-I line of FIG. 1
- Reference numeral 1 indicates the machine frame and 2 a machine table.
- the table 2 includes a vertically-movable front table 2 a.
- Six head pairs (groups), each comprising two types of machine heads 3 and 4 are provided on a front surface of the machine frame 1 .
- One of the machine heads 3 in each of the head pairs (groups) is a multi-needle lock-stitching machine head having a plurality of (e.g., nine) sewing needles, while the other machine head 4 is a single-needle lock-stitching machine head intended for decorative embroidery and capable of sewing a tape or the like.
- One rotary hook bed 5 provided with one rotary hook 6 is disposed under each of the head pairs (groups).
- Base sash frame 7 is provided on the table 2 and driven to move two-dimensionally in X and Y directions via frame drive sections 8 and 9 .
- a plurality of embroidery frames 10 are supported on the base sash frame 7 in corresponding relation to the rotary hook beds 5 , and a cylindrically-shaped embroidering workpiece, such as the body of a T-shirt, can be set on each of the embroidery frames 10 .
- FIG. 4 is a front view showing, in enlarged scale, parts of a color change mechanism 20 and horizontal movement mechanism 30
- (b) of FIG. 4 is a plan view of the parts of the color change mechanism 20 and horizontal movement mechanism 30 .
- a pair of upper and lower guide rails 13 each composed of a plurality of rails 13 a connected in series, are disposed on the front surface of the machine frame 1 .
- the machine heads 3 and 4 of each of the head pairs are fixed to a mounting plate 12 that is in turn fixed to a slider 14 movably provided on the two guide rails 13 .
- the machine heads 3 and 4 of each of the head pairs are slidable relative to the machine frame 1 .
- FIG. 5 is an enlarged side view of one of the multi-needle machine heads 3
- FIG. 6 is an enlarged side view of one of the single-needle machine heads 4 .
- the multi-needle machine head 3 includes an arm 15 and a needle bar case 16 slidably supported on the arm 15 , and the needle bar case 16 includes a plurality of (e.g., nine) sewing needles 17 .
- the needle bar case 16 is slid horizontally via the color change mechanism 20 so that any desired one of the sewing needles 17 can be selectively positioned at a predetermined operating position (selected position).
- Machine's main shaft 18 extends through each of the machine heads 3 and 4 , and, through rotation of the machine's main shaft 18 , the sewing needle 17 positioned at the operating position (selected position) in the multi-needle machine head 3 and the sewing needle 19 in the machine head 4 are moved up and down.
- the color change mechanism 20 for positioning a desired one of the plurality of (nine) sewing needles 17 of the machine head 3 at a selected position is provided on the front surface of the machine frame 1 .
- the color change mechanism 20 too is fixed, via a mounting plate 21 , to the slider 14 slidably provided on the guide rails 13 .
- the color change mechanism 20 too is slidable relative to the machine frame 1 .
- FIG. 7 shows, in a further enlarged scale, an example specific construction of the color change mechanism 20 , in which (a) is a front view of the color change mechanism 20 and (b) is a sectional side view of the color change mechanism 20 .
- the color change mechanism 20 includes a frame member (base) 22 of a channel-like sectional shape fixed to the mounting plate 21 , a ball screw 23 rotatably supported on the frame member 22 , and a moving member 26 mounted on a nut member 24 screwed on the ball screw 23 and slidable along guide shafts 25 .
- Drive motor 27 is fixed to the frame member 22 and has its motor shaft connected to one end of the ball screw 23 , to thereby constitute a drive section.
- the ball screw 23 is rotated so that the moving member 26 is caused to slide together with the nut member 24 .
- Rod 28 is connected to the needle bar case 16 of the machine head 3 of each of the head pairs and has one end connected to the moving member 26 , which thereby constitutes a slide drive member. As the moving member 26 is slid by being driven by the drive motor 27 , the needle bar case 16 is slid in a left-right direction via the rod 28 . As shown in FIG. 6 , the machine head 4 has a hole 29 to permit passage therethrough of the rod 28 .
- FIG. 8 shows, in a further enlarged scale, an example specific construction of the horizontal movement mechanism 30 , in which (a) is a front view of the horizontal movement mechanism 30 and (b) is a sectional side view of the horizontal movement mechanism 30 . As shown in FIG.
- the horizontal movement mechanism 30 which is constructed in a similar manner to the color change mechanism 20 , includes a frame member 31 fixed to the machine frame 1 , a ball screw 32 rotatably supported on the frame member 31 , and a moving member 35 mounted on a nut member 33 screwed on the ball screw 32 and slidable along guide shafts 34 .
- Drive motor 36 is fixed to the frame member 31 and has its motor shaft connected to one end of the ball screw 32 .
- the individual mounting plates 12 having the head pairs fixed thereto and the mounting plate 21 having the color change mechanism 20 are interconnected via a connecting rod 37 , and the mounting plate 21 is connected with the moving member 35 of the horizontal movement mechanism 30 via the connecting rod 37 .
- FIG. 4 shows a state of the machine in which the single-needle machine head 4 is in positional correspondence to the rotary hook bed 5
- FIG. 10 or 11 shows a state of the machine in which the multi-needle machine head 3 is in positional correspond to the rotary hook bed 5 .
- FIG. 9 shows, in enlarged scale, an example specific construction of a mechanism for transmitting rotation of a main shaft motor 43 to the machine's main shaft disposed in a left region of the front of the machine, in which (a) is a front view of the rotation transmission mechanism and (b) is a sectional side view of the rotation transmission mechanism.
- a spline shaft 38 is connected to the left end of the machine's main shaft 18 .
- the spline shaft 38 has mounted thereon bearings 39 slidable along the axis of the spline shaft 38 and rotatable with the spline shaft 38 .
- Main shaft pulley 40 and driven pulley 41 are fixed to the bearings 39 .
- the main shaft pulley 40 is connected, via a timing belt 42 , with the main shaft motor 43 fixed to the rear surface of the machine frame 1 .
- the driven pulley 41 is connected with a rotary hook shaft pulley 46 via a timing belt 44 and intermediate pulley 45 .
- the rotary hook shaft pulley 46 is fixed to one end portion of a rotary hook shaft 47 .
- the rotary hook shaft 47 extends through the individual rotary hook beds 5 , and the rotary hook 6 in each of the rotary hook beds 5 is rotatable by rotation of the rotary hook shaft 47 .
- a position of the spline shaft 38 when the machine head 4 is in positional correspondence to the rotary hook bed 5 is indicated by a solid line
- a position of the spline shaft 38 when the machine head 3 is in positional correspondence to the rotary hook bed 5 is indicated by an imaginary line.
- a cylindrically-shaped embroidering workpiece is set on the embroidery frame 10 , and then the embroidery frame 10 is mounted on the base sash frame 7 .
- decorative embroidery sewing such as sewing of a tape
- the single-needle machine head 4 in each of the head pairs is placed, via the horizontal movement mechanism 30 , in positional correspondence to the associated rotary hook bed 5 .
- the main shaft motor 43 is activated so that the sewing needle 19 is moved up and down, the rotary hook 6 is rotated and the base sash frame 7 is moved on the basis of embroidery data.
- decorative embroidery sewing such as sewing of a tape
- sewing of a tape is performed by the single-needle machine head 4 , during which time up-and-down movement of any one of the sewing needles 17 in the multi-needle machine head 3 that is not currently in positional correspondence to the rotary hook bed 5 is inhibited through the well-known jump control.
- FIG. 11 shows a state in which the sewing needle 17 of a desired color thread has been selectively positioned at a predetermined operating position (selected position) through driving by the color change mechanism 20 .
- the main shaft motor 43 is activated, so that the sewing needle 17 , positioned at the operating position (selected position), is moved up and down, the rotary hook 6 is rotated and the base sash frame 7 is moved on the basis of the embroidery data.
- embroidery sewing using the desired color thread, is performed by the multi-needle machine head 3 , during which time up-and-down movement of any one of the sewing needles 19 in the single-needle machine head 4 that is not currently in positional correspondence to the rotary hook bed 5 is inhibited through the well-known jump control.
- the instant embodiment permits selective embroidery sewing by the two types of machine heads 3 and 4 although only one rotary hook bed 5 is to be positioned inside the embroidering workpiece.
- combination embroidery sewing on the cylindrically-shaped embroidering workpiece can be performed by the single embroidery sewing machine smoothly without any problem.
- the color change mechanism 20 is caused to slide together with the machine heads 3 and 4 , the instant embodiment allows a color change operation to be readily performed in the multi-needle machine head 3 with the conventional construction and control.
- the present invention can eliminate such complexity and thereby achieve a simplified construction.
- slide drive mechanism of the color change mechanism 20 and the slide drive mechanism of the horizontal movement mechanism 30 in the embodiment have been described above as ball-screw-based rotary-to-linear converting structures
- the present invention is not so limited, and the slide drive mechanisms may be other suitable structures, such as cam-based rotary-to-linear converting structures or linear-motor-based linear movement structures.
- the two types of machine heads in each of the head pairs (groups) are not limited to a combination of multi-needle and single-needle machine heads, and alternatively both of the two machine heads may be multi-needle machine heads.
- each of the head groups may comprise three different types of machine heads.
- the present invention is applicable to not only to multi-head sewing machines but also sewing machines provided with only one head pair or head group comprising two or more machine heads.
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Abstract
In a head group comprising two or more machine heads (3, 4) provided in proximity to each other so that each of the machine heads can perform embroidery sewing on an embroidering area of an embroidery frame on which a cylindrically-shaped embroidering workpiece is set, at least one of the machine heads is a multi-needle machine head (3). There are also provided a color change mechanism (20) for selectively positioning a desired needle at a predetermined operating position in the multi-needle machine head, a rotary hook bed (5) provided for each of the head group for shared use between the machine heads. There is provided a horizontal movement mechanism (30) for disposing the individual machine heads and the color change mechanism for horizontal movement relative to the rotary hook beds and horizontally moving the individual machine heads and the color change mechanism together to place any one of the machine heads in each of the head groups in positional correspondence to the rotary hook bed.
Description
- The present invention relates to embroidery sewing machines for performing sewing on cylindrically-shaped embroidering workpieces, such as bodies of sweaters and T-shirts.
- In embroidering the body of a T-shirt, for example, it is necessary to position a cylindrical rotary hook bed, having a rotary hook provided therein, inside the cylindrically-shaped body set on an embroidery frame. One example of such a construction is disclosed in Japanese Utility Model Publication No. HEI-1-11751. When a shirt is set on the embroidery frame with the shirt's front body positioned over the upper surface of the rotary hook bed, as clear from the No. HEI-1-11751 publication, the shirt's back body hangs from the periphery of the embroidery frame down the rotary hook bed. Further, with the fashion individualization trends in recent years, there has been an increasing demand for so-called “combination embroideries” in the embroidery industry as well. Examples of the combination embroideries include a combination of an ordinary multi-color embroidery and a decorative embroidery made by sewing of a tape, string or other material, and an operation for making such combination embroideries is performed today by a dedicated combination-embroidery sewing machine provided with two different types of machine heads intended for multi-color embroidering and decorative embroidering.
- Although combination embroidery can be performed by a single embroidery sewing machine as long as it is dedicated to combination-embroidery, there has so far been no combination-embroidery sewing machine capable of embroidering a cylindrically-shaped embroidering workpiece, for the following reasons. Namely, in order to embroider a cylindrically-shaped embroidering workpiece, it is necessary to position the rotary hook bed inside the cylindrically-shaped embroidering workpiece, as noted above. Thus, in order to embroider such a cylindrically-shaped embroidering workpiece using two types of machine heads, it is necessary to position two cylindrical rotary hook beds, corresponding to the two machine heads, inside the cylindrically-shaped embroidering workpiece. Therefore, there would be encountered not only the inconvenience that kinds of embroidering workpieces that can be embroidered tend to be limited, but also the inconvenience that, even with an embroiderable embroidering workpiece, a sufficient embroidering area can not be secured unless the hanging-down portion of the workpiece has a sufficient margin. One possible approach for avoiding the above inconveniences is to position only one of the hook bed, corresponding to the machine head to be next used for embroidering, inside the embroidering workpiece; however, when the other machine head is to be next used for embroidering after completion of embroidery by the one machine head, it is necessary to deactivate the embroidery sewing machine to detach and re-attach the embroidery frame in order to switch the rotary hook bed that is to be positioned inside the embroidering workpiece, which would inevitably require extra labor and time. In addition, there are possibilities of part of the embroidering workpiece, hanging down the rotary hook bed, interfering with the rotary hook bed and being stained or impaired. For the foregoing reasons, none of the conventionally-known embroidery sewing machines can not perform combination embroidery by itself.
- In view of the foregoing, it is an object of the present invention to provide an embroidery sewing machine which can smoothly perform, without any problem, combination embroidery on a cylindrically-shaped embroidering workpiece using a plurality of types of machine heads.
- In order to accomplish the above-mentioned object, the present invention provides an improved embroidery sewing machine for a cylindrically-shaped embroidering workpiece, which comprises: a head group comprising two or more machine heads disposed in proximity to each other so that each of the machine heads can perform embroidery sewing on an embroidering area of an embroidery frame on which the cylindrically-shaped embroidering workpiece is set, at least one of the two or more machine heads being a multi-needle machine head having a plurality of needles; a color change mechanism for selectively positioning a desired one of the needles at a predetermined operating position in the multi-needle machine head; a rotary hook bed provided for each of the head group for shared use between the machine heads in the head group and corresponding to one embroidering workpiece; and a horizontal movement mechanism for disposing individual ones of the machine heads and the color change mechanism for horizontal movement relative to the rotary hook beds and horizontally moving the individual machine heads and the color change mechanism together to place any one of the machine heads in each of the head groups in positional correspondence to the rotary hook bed.
- By selectively placing either one of the plurality of machine heads in each of the head groups in positional correspondence to one rotary hook bed in the aforementioned manner, the present invention can perform different types of embroidery or sewing with the respective machine heads although only one rotary hook bed is to be positioned inside the embroidering workpiece. As a result, combination embroidery with the plurality of types of machine heads can be performed by one embroidery sewing machine smoothly without any problem. Further, with the arrangement that the color change mechanism for the multi-needle machine heads is caused to slide together with the horizontal movement mechanism for the head groups, the present invention can significantly simplify the construction of the entire horizontal movement mechanism.
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FIG. 1 is a front view of an embroidery sewing machine in accordance with an embodiment of the present invention; -
FIG. 2 is a plan view showing the embroidery sewing machine with an upper machine frame and machine heads omitted for clarity; -
FIG. 3 is a sectional side view taken along the I-I line ofFIG. 1 ; - (a) of
FIG. 4 is an enlarged front view of a color change mechanism and horizontal movement mechanism of the embroidery sewing machine, and (b) ofFIG. 4 is a plan view of the color change mechanism and horizontal movement mechanism; -
FIG. 5 is an enlarged side view of one of multi-needle machine heads; -
FIG. 6 is an enlarged side view of one of single-needle machine heads; - (a) of
FIG. 7 is a front view showing, in further enlarged scale, an example specific construction of the color change mechanism, and (b) ofFIG. 7 is a sectional side view of the color change mechanism; - (a) of
FIG. 8 is a front view showing, in further enlarged scale, an example specific construction of the horizontal movement mechanism, and (b) ofFIG. 8 is a sectional side view of the horizontal movement mechanism; - (a) of
FIG. 9 is a front view showing, in a further enlarged scale, an example specific construction of a mechanism for transmitting rotation of a main shaft motor to a machine's main shaft disposed in a left region of the front of the sewing machine, and (b) ofFIG. 9 is a sectional side view of the rotation transmission mechanism; - (a) of
FIG. 10 and (b) ofFIG. 10 are a front view and plan view, respectively, showing an example state in which the multi-needle machine head has been placed in positional correspondence to a rotary hook bed; and - (a) of
FIG. 11 and (b) ofFIG. 11 are a front view and plan view, respectively, showing an example state in which a desired sewing needle (color thread) has been selectively slid via the color change mechanism ofFIG. 10 . -
FIG. 1 is a front view of an embroidery sewing machine in accordance with an embodiment of the present invention,FIG. 2 is a plan view showing the embroidery sewing machine with anupper machine frame 1 andmachine heads FIG. 3 is a sectional side view taken along the I-I line ofFIG. 1 .Reference numeral 1 indicates the machine frame and 2 a machine table. The table 2 includes a vertically-movable front table 2 a. Six head pairs (groups), each comprising two types ofmachine heads machine frame 1. One of themachine heads 3 in each of the head pairs (groups) is a multi-needle lock-stitching machine head having a plurality of (e.g., nine) sewing needles, while theother machine head 4 is a single-needle lock-stitching machine head intended for decorative embroidery and capable of sewing a tape or the like. Onerotary hook bed 5 provided with onerotary hook 6 is disposed under each of the head pairs (groups). Basesash frame 7 is provided on the table 2 and driven to move two-dimensionally in X and Y directions viaframe drive sections embroidery frames 10 are supported on the basesash frame 7 in corresponding relation to therotary hook beds 5, and a cylindrically-shaped embroidering workpiece, such as the body of a T-shirt, can be set on each of theembroidery frames 10. - (a) of
FIG. 4 is a front view showing, in enlarged scale, parts of acolor change mechanism 20 andhorizontal movement mechanism 30, and (b) ofFIG. 4 is a plan view of the parts of thecolor change mechanism 20 andhorizontal movement mechanism 30. As clearly seen fromFIG. 4 , a pair of upper andlower guide rails 13, each composed of a plurality of rails 13 a connected in series, are disposed on the front surface of themachine frame 1. The machine heads 3 and 4 of each of the head pairs are fixed to amounting plate 12 that is in turn fixed to aslider 14 movably provided on the twoguide rails 13. The machine heads 3 and 4 of each of the head pairs are slidable relative to themachine frame 1.FIG. 5 is an enlarged side view of one of themulti-needle machine heads 3, andFIG. 6 is an enlarged side view of one of the single-needle machine heads 4. - As shown in
FIG. 5 , themulti-needle machine head 3 includes anarm 15 and aneedle bar case 16 slidably supported on thearm 15, and theneedle bar case 16 includes a plurality of (e.g., nine)sewing needles 17. As will be later described, theneedle bar case 16 is slid horizontally via thecolor change mechanism 20 so that any desired one of thesewing needles 17 can be selectively positioned at a predetermined operating position (selected position). Machine'smain shaft 18 extends through each of themachine heads main shaft 18, thesewing needle 17 positioned at the operating position (selected position) in themulti-needle machine head 3 and thesewing needle 19 in themachine head 4 are moved up and down. - The
color change mechanism 20 for positioning a desired one of the plurality of (nine)sewing needles 17 of themachine head 3 at a selected position is provided on the front surface of themachine frame 1. Thecolor change mechanism 20 too is fixed, via amounting plate 21, to theslider 14 slidably provided on theguide rails 13. Thus, thecolor change mechanism 20 too is slidable relative to themachine frame 1.FIG. 7 shows, in a further enlarged scale, an example specific construction of thecolor change mechanism 20, in which (a) is a front view of thecolor change mechanism 20 and (b) is a sectional side view of thecolor change mechanism 20. - As shown in
FIG. 7 , thecolor change mechanism 20 includes a frame member (base) 22 of a channel-like sectional shape fixed to themounting plate 21, aball screw 23 rotatably supported on theframe member 22, and a movingmember 26 mounted on anut member 24 screwed on theball screw 23 and slidable alongguide shafts 25.Drive motor 27 is fixed to theframe member 22 and has its motor shaft connected to one end of theball screw 23, to thereby constitute a drive section. Thus, by activation of thedrive motor 27, theball screw 23 is rotated so that the movingmember 26 is caused to slide together with thenut member 24.Rod 28 is connected to theneedle bar case 16 of themachine head 3 of each of the head pairs and has one end connected to the movingmember 26, which thereby constitutes a slide drive member. As the movingmember 26 is slid by being driven by thedrive motor 27, theneedle bar case 16 is slid in a left-right direction via therod 28. As shown inFIG. 6 , themachine head 4 has ahole 29 to permit passage therethrough of therod 28. - As shown in
FIG. 1 or 4, thehorizontal movement mechanism 30 for causing each of the head pairs andcolor change mechanism 20 to slide together is provided on the front surface of themachine frame 1.FIG. 8 shows, in a further enlarged scale, an example specific construction of thehorizontal movement mechanism 30, in which (a) is a front view of thehorizontal movement mechanism 30 and (b) is a sectional side view of thehorizontal movement mechanism 30. As shown inFIG. 8 , thehorizontal movement mechanism 30, which is constructed in a similar manner to thecolor change mechanism 20, includes aframe member 31 fixed to themachine frame 1, aball screw 32 rotatably supported on theframe member 31, and a movingmember 35 mounted on anut member 33 screwed on theball screw 32 and slidable alongguide shafts 34. Drivemotor 36 is fixed to theframe member 31 and has its motor shaft connected to one end of theball screw 32. Theindividual mounting plates 12 having the head pairs fixed thereto and the mountingplate 21 having thecolor change mechanism 20 are interconnected via a connectingrod 37, and the mountingplate 21 is connected with the movingmember 35 of thehorizontal movement mechanism 30 via the connectingrod 37. Thus, as thedrive motor 36 of thehorizontal movement mechanism 30 is driven to cause the movingmember 35 to slide, theindividual machine heads 3 and thecolor change mechanism 20 are caused to slide together in the horizontal (leftward or rightward) direction. Then, either one of the machine heads 3 or 4 is placed in positional correspondence to therotary hook bed 5, so that embroidery sewing is performed using the thus-positionedmachine head main shaft 18 is caused to slide together with the machine heads 3 and 4.FIG. 4 shows a state of the machine in which the single-needle machine head 4 is in positional correspondence to therotary hook bed 5, whileFIG. 10 or 11 shows a state of the machine in which themulti-needle machine head 3 is in positional correspond to therotary hook bed 5. -
FIG. 9 shows, in enlarged scale, an example specific construction of a mechanism for transmitting rotation of amain shaft motor 43 to the machine's main shaft disposed in a left region of the front of the machine, in which (a) is a front view of the rotation transmission mechanism and (b) is a sectional side view of the rotation transmission mechanism. As clearly seen fromFIG. 9 , aspline shaft 38 is connected to the left end of the machine'smain shaft 18. Thespline shaft 38 has mounted thereonbearings 39 slidable along the axis of thespline shaft 38 and rotatable with thespline shaft 38.Main shaft pulley 40 and driven pulley 41 are fixed to thebearings 39. Themain shaft pulley 40 is connected, via a timing belt 42, with themain shaft motor 43 fixed to the rear surface of themachine frame 1. The driven pulley 41 is connected with a rotary hook shaft pulley 46 via atiming belt 44 and intermediate pulley 45. The rotary hook shaft pulley 46 is fixed to one end portion of arotary hook shaft 47. As seen inFIG. 3 , therotary hook shaft 47 extends through the individualrotary hook beds 5, and therotary hook 6 in each of therotary hook beds 5 is rotatable by rotation of therotary hook shaft 47. Thus, through activation of themain shaft motor 43, the machine'smain shaft 18 androtary hook shaft 47 are rotated, so that not only thesewing needle rotary hook 6 is rotated. Via thespline shaft 38 andspline bearings 39, the driving force of themain shaft motor 43 is transmitted to themain shaft 18 with axial sliding movement of theshaft 18 permitted. InFIG. 9 , a position of thespline shaft 38 when themachine head 4 is in positional correspondence to the rotary hook bed 5 (i.e., the state ofFIG. 4 ) is indicated by a solid line, while a position of thespline shaft 38 when themachine head 3 is in positional correspondence to the rotary hook bed 5 (seeFIG. 10 ) is indicated by an imaginary line. - The following paragraphs describe an example manner in which combination embroidery sewing is performed in the instant embodiment.
- First, a cylindrically-shaped embroidering workpiece is set on the
embroidery frame 10, and then theembroidery frame 10 is mounted on thebase sash frame 7. When decorative embroidery sewing, such as sewing of a tape, is to be performed on the embroidering workpiece, the single-needle machine head 4 in each of the head pairs is placed, via thehorizontal movement mechanism 30, in positional correspondence to the associatedrotary hook bed 5. Then, themain shaft motor 43 is activated so that thesewing needle 19 is moved up and down, therotary hook 6 is rotated and thebase sash frame 7 is moved on the basis of embroidery data. In this manner, decorative embroidery sewing, such as sewing of a tape, is performed by the single-needle machine head 4, during which time up-and-down movement of any one of the sewing needles 17 in themulti-needle machine head 3 that is not currently in positional correspondence to therotary hook bed 5 is inhibited through the well-known jump control. - When multi-color embroidery is to be performed, the
multi-needle machine head 3 in each of the head pairs is placed, via thehorizontal movement mechanism 30, in positional correspondence to the associatedrotary hook bed 5, and then thesewing needle 17 of a desired color thread is selectively positioned at a predetermined position (selected position) through driving by thecolor change mechanism 20.FIG. 11 shows a state in which thesewing needle 17 of a desired color thread has been selectively positioned at a predetermined operating position (selected position) through driving by thecolor change mechanism 20. Then, themain shaft motor 43 is activated, so that thesewing needle 17, positioned at the operating position (selected position), is moved up and down, therotary hook 6 is rotated and thebase sash frame 7 is moved on the basis of the embroidery data. In this manner, embroidery sewing, using the desired color thread, is performed by themulti-needle machine head 3, during which time up-and-down movement of any one of the sewing needles 19 in the single-needle machine head 4 that is not currently in positional correspondence to therotary hook bed 5 is inhibited through the well-known jump control. - By selectively placing, through driving by the
horizontal movement mechanism 30, either one of the two types ofmachine heads rotary hook bed 5 as noted above, the instant embodiment permits selective embroidery sewing by the two types ofmachine heads rotary hook bed 5 is to be positioned inside the embroidering workpiece. As a result, combination embroidery sewing on the cylindrically-shaped embroidering workpiece can be performed by the single embroidery sewing machine smoothly without any problem. Further, with the arrangement that thecolor change mechanism 20 is caused to slide together with the machine heads 3 and 4, the instant embodiment allows a color change operation to be readily performed in themulti-needle machine head 3 with the conventional construction and control. If a construction where thecolor change mechanism 20 is not caused to slide is employed, then there arise needs for an extra structure to permit sliding movement of the machine heads 3 relative to thecolor change mechanism 20, control to calculate a sliding movement amount of themachine head 3, etc. which would result in a considerably complicated construction of the machine. However, the present invention can eliminate such complexity and thereby achieve a simplified construction. - Whereas the slide drive mechanism of the
color change mechanism 20 and the slide drive mechanism of thehorizontal movement mechanism 30 in the embodiment have been described above as ball-screw-based rotary-to-linear converting structures, the present invention is not so limited, and the slide drive mechanisms may be other suitable structures, such as cam-based rotary-to-linear converting structures or linear-motor-based linear movement structures. Further, the two types of machine heads in each of the head pairs (groups) are not limited to a combination of multi-needle and single-needle machine heads, and alternatively both of the two machine heads may be multi-needle machine heads. In the case where the two machine heads are multi-needle machine heads, it is possible to increase the number of thread colors that can be used; in this case, onecolor change mechanism 20 can be shared between the paired multi-needle machine heads. Further, each of the head groups may comprise three different types of machine heads. Furthermore, the present invention is applicable to not only to multi-head sewing machines but also sewing machines provided with only one head pair or head group comprising two or more machine heads.
Claims (3)
1. An embroidery sewing machine for a cylindrically-shaped embroidering workpiece, said embroidery sewing machine comprising:
a head group comprising two or more machine heads disposed in proximity to each other so that each of the machine heads can perform embroidery sewing on an embroidering area of an embroidery frame on which the cylindrically-shaped embroidering workpiece is set, at least one of the two or more machine heads being a multi-needle machine head having a plurality of needles;
a color change mechanism for selectively positioning a desired one of the needles at a predetermined operating position in the multi-needle machine head;
a rotary hook bed provided for each of the head group for shared use between the machine heads in the head group and corresponding to one said embroidering workpiece; and
a horizontal movement mechanism for disposing individual ones of the machine heads and said color change mechanism for horizontal movement relative to the rotary hook beds and horizontally moving the individual machine heads and said color change mechanism together to place any one of the machine heads in each of the head groups in positional correspondence to said rotary hook bed.
2. An embroidery sewing machine as claimed in claim 1 wherein a plurality of the head groups are arranged horizontally at predetermined intervals and a plurality of the rotary hook beds are arranged horizontally at predetermined intervals in corresponding relation to the plurality of the head groups, and wherein said horizontal mechanism moves the plurality of the head groups and said color change mechanism together horizontally relative to the rotary hook beds.
3. An embroidery sewing machine as claimed in either claim 1 or 2 wherein each of the multi-needle machine heads in each of the heads groups includes a slidable needle bar case having a plurality of sewing needles arranged horizontally,
said color change mechanism includes a slide drive member connected to the needle bar case of each of the multi-needle machine heads, a drive section for selectively positioning a desired one of the needles of each of the needle bar cases at a predetermined operating position by driving said slide drive member to slide by a predetermined amount, and a base having said drive section fixed thereto,
the machine heads in each of the head groups are interconnected via a mounting plate, the mounting plate being mounted for horizontal movement relative to a machine frame so that each of the machine heads is movable horizontally relative to the machine frame, and
said horizontal movement mechanism includes an interlocking member interconnecting the mounting plate and the base of said color change mechanism and a drive mechanism for horizontally moving the interlocking member, the interlocking member being horizontally moved by the drive mechanism so that each of the machine heads and said color change mechanism are horizontally moved together.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-315990 | 2004-10-29 | ||
JP2004315990A JP2006122436A (en) | 2004-10-29 | 2004-10-29 | Embroidery sewing machine |
PCT/JP2005/019916 WO2006046708A1 (en) | 2004-10-29 | 2005-10-28 | Embroidery machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090173261A1 true US20090173261A1 (en) | 2009-07-09 |
Family
ID=36227948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/718,170 Abandoned US20090173261A1 (en) | 2004-10-29 | 2005-10-28 | Embroidery sewing machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090173261A1 (en) |
EP (1) | EP1806445A1 (en) |
JP (1) | JP2006122436A (en) |
KR (1) | KR100804110B1 (en) |
CN (1) | CN101040078B (en) |
WO (1) | WO2006046708A1 (en) |
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US20120167810A1 (en) * | 2009-09-17 | 2012-07-05 | Nsd Corporation | Drive device for sewing machine sewing frame |
CN102634942A (en) * | 2012-05-10 | 2012-08-15 | 诸暨玛雅电器机械有限公司 | Color-changing device of computer embroidery machine |
CN102660845A (en) * | 2012-05-10 | 2012-09-12 | 诸暨玛雅电器机械有限公司 | Stitch position signal acquisition device for computer embroidery machine |
CN102978852A (en) * | 2012-11-02 | 2013-03-20 | 中捷大宇机械有限公司 | Needle rod changing device for digital control embroidery machine |
CN103046256A (en) * | 2012-12-31 | 2013-04-17 | 浙江凯泽路亚绣花机有限责任公司 | Color change mechanism of embroidery machine |
CN103541162A (en) * | 2012-07-13 | 2014-01-29 | 北京大豪科技股份有限公司 | Computerized embroidery machine and needle position detecting method of computerized embroidery machine |
CN103835083A (en) * | 2014-03-10 | 2014-06-04 | 江苏大岛机械集团有限公司 | Multifunctional swinging type quilting and embroidering integration machine |
CN104611855A (en) * | 2015-01-20 | 2015-05-13 | 江苏大岛机械集团有限公司 | Upper and lower aluminum spline shaft integrated transmission structure adopting right-angle conversion |
CN104695153A (en) * | 2015-03-24 | 2015-06-10 | 宁波高新区宁源科技服务有限公司 | Flicking needle embroidering cloth type embroidery machine head |
CN107460660A (en) * | 2017-08-30 | 2017-12-12 | 贵州绣之魂民族服饰有限公司 | A kind of adjustable embroidering device |
US10113257B2 (en) * | 2013-07-12 | 2018-10-30 | Ningbo Supreme Electronic Machinery Co., Ltd. | Multi-needle bar module for sewing machines |
CN109722814A (en) * | 2017-10-30 | 2019-05-07 | 天津科焱科技有限公司 | A kind of needle exchange carpet flocking machine head device |
DE102022206251A1 (en) | 2022-06-22 | 2023-12-28 | Pfaff Industriesysteme Und Maschinen Gmbh | Portal sewing system |
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CN101230524B (en) * | 2008-02-01 | 2013-01-16 | 赵泽芳 | Face towel embroidery device |
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CN102191639B (en) * | 2011-05-16 | 2013-05-22 | 杭州经纬电子机械制造股份有限公司 | Color-changing mechanism for embroidery machine |
CN106192251A (en) * | 2016-08-26 | 2016-12-07 | 林俊仁 | A kind of method that computerized embroidery is hyperchromic |
CN107687053B (en) * | 2017-09-30 | 2023-01-10 | 朱月眉 | Color changing mechanism of embroidery machine |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US20120167810A1 (en) * | 2009-09-17 | 2012-07-05 | Nsd Corporation | Drive device for sewing machine sewing frame |
US8826837B2 (en) * | 2009-09-17 | 2014-09-09 | Nsd Corporation | Drive device for sewing machine sewing frame |
CN102634942A (en) * | 2012-05-10 | 2012-08-15 | 诸暨玛雅电器机械有限公司 | Color-changing device of computer embroidery machine |
CN102660845A (en) * | 2012-05-10 | 2012-09-12 | 诸暨玛雅电器机械有限公司 | Stitch position signal acquisition device for computer embroidery machine |
CN103541162A (en) * | 2012-07-13 | 2014-01-29 | 北京大豪科技股份有限公司 | Computerized embroidery machine and needle position detecting method of computerized embroidery machine |
CN102978852A (en) * | 2012-11-02 | 2013-03-20 | 中捷大宇机械有限公司 | Needle rod changing device for digital control embroidery machine |
CN103046256A (en) * | 2012-12-31 | 2013-04-17 | 浙江凯泽路亚绣花机有限责任公司 | Color change mechanism of embroidery machine |
US10113257B2 (en) * | 2013-07-12 | 2018-10-30 | Ningbo Supreme Electronic Machinery Co., Ltd. | Multi-needle bar module for sewing machines |
CN103835083A (en) * | 2014-03-10 | 2014-06-04 | 江苏大岛机械集团有限公司 | Multifunctional swinging type quilting and embroidering integration machine |
CN104611855A (en) * | 2015-01-20 | 2015-05-13 | 江苏大岛机械集团有限公司 | Upper and lower aluminum spline shaft integrated transmission structure adopting right-angle conversion |
CN104695153A (en) * | 2015-03-24 | 2015-06-10 | 宁波高新区宁源科技服务有限公司 | Flicking needle embroidering cloth type embroidery machine head |
CN107460660A (en) * | 2017-08-30 | 2017-12-12 | 贵州绣之魂民族服饰有限公司 | A kind of adjustable embroidering device |
CN109722814A (en) * | 2017-10-30 | 2019-05-07 | 天津科焱科技有限公司 | A kind of needle exchange carpet flocking machine head device |
DE102022206251A1 (en) | 2022-06-22 | 2023-12-28 | Pfaff Industriesysteme Und Maschinen Gmbh | Portal sewing system |
WO2023247265A1 (en) | 2022-06-22 | 2023-12-28 | Pfaff Industriesysteme Und Maschinen Gmbh | Portal sewing system |
Also Published As
Publication number | Publication date |
---|---|
CN101040078A (en) | 2007-09-19 |
KR100804110B1 (en) | 2008-02-18 |
EP1806445A1 (en) | 2007-07-11 |
JP2006122436A (en) | 2006-05-18 |
KR20070024499A (en) | 2007-03-02 |
WO2006046708A1 (en) | 2006-05-04 |
CN101040078B (en) | 2011-07-20 |
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