JP2009046799A - Apparatus for driving sewing frame of sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for driving a sewing frame of a sewing machine by which high speed operation is made possible by transmitting uniform transporting driving force to the whole sewing frame and solving phenomenon in which the quality of embroideries is lowered due to swinging of the sewing frame in transporting operation. <P>SOLUTION: The apparatus for driving a sewing frame of the sewing machine includes at least one right-to-left movement mechanism 130X to move the sewing frame to support an object to be sewn in right-to-left direction, and at least one front-to-rear movement mechanisms 130Y to move the sewing frame 120 in front-to-rear direction. Any one of the right-to-left movement mechanisms 130X and the front-to-rear movement mechanisms 130Y includes a fixed frame 210 installed to a body of the sewing machine 100, a movable frame 220 movably installed on the fixed frame 210 and formed with gear teeth, and movable frame driving means 150 engaged with the gear teeth formed in the movable frame 210 and reciprocating the movable frame 220. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sewing frame drive device for a sewing machine provided with a power transmission device using a rack and pinion drive system, and more particularly, to a single fixing using a power transmission device using a rack and pinion drive system. By transferring the transfer frame of the sewing frame installed on the frame, it is possible to transmit a uniform transfer driving force to the entire sewing frame, so that the quality of the embroidery deteriorates due to the shaking of the sewing frame during the transfer operation. As a result, the present invention relates to a sewing frame drive device for a sewing machine capable of high-speed operation.

  Generally, a sewing machine is a machine that performs needlework, and includes an embroidery machine and a sewing machine. The embroidery machine has a embroidery frame that fixes the sword while moving up and down the needle pedestal that can carry out needlework. The sewing machine is a sewing machine often used at home.

  While the sewing machine is configured to perform sewing while transferring the blank on a tooth-shaped transfer table, the embroidery machine performs embroidery while the frame on which the blank is fixed is transferred in the left-right direction and the front-back direction. There are differences in the configuration.

  Such an embroidery machine is configured to embroidery while the sewing frame with the base frame fixed is transferred in the left-right direction and the front-rear direction, so the accuracy and constant speed in the movement of the sewing frame is closely related to the quality of the embroidery. Related.

  Therefore, a servo motor or an induction motor that can control the speed is used as a power source that drives the vertical movement of the needle stand of the embroidery machine, and a power source that moves the sewing frame in the left-right direction and the front-rear direction is used. In general, a stepping motor having excellent positioning ability and easy control is used.

  Examples of the embroidery machine include a single-head automatic embroidery machine having one head, a multi-head automatic embroidery machine having two or more heads, and a special embroidery machine such as a computer quilting machine.

  Hereinafter, the configuration and operation of an embroidery machine according to the related art will be described with reference to the accompanying drawings.

  FIG. 1 is an overall outline view of a conventional general multi-head automatic embroidery machine, and FIG. 2 is a configuration diagram showing a head and a bobbin case driving unit of the embroidery machine shown in FIG.

  As shown in FIGS. 1 and 2, the multi-head type automatic embroidery machine includes a machine body 1 (main body) that supports the embroidery machine, a table 2 provided (installed) on the machine body 1, A sewing frame 3 (or also referred to as “embroidery frame 3”) provided on the upper portion for fixing the cloth to be embroidered, a plurality of heads 4 provided on the upper shaft 11 of the upper portion of the sewing frame 3 for performing embroidery work, and a table A bobbin case 15 (also referred to as a “Hook 15”) that is provided so as to face the head 4 and supplies a lower thread, and a lower part of the table 2. The main controller box 5 and an operation panel 6 installed at one end of the table 2 are provided. A spindle drive motor 13 is provided at the lower stage on one side of the table 2. The rotating shaft of the main shaft drive motor 13 and the lower shaft 12 are connected (connected) by a first belt 14a, and the lower shaft 12 and the upper shaft 11 are connected (connected) by a second belt 14b. Has been.

  Accordingly, the lower shaft 12 and the upper shaft 11 are rotated by the rotation of the main shaft driving motor 13, and the bobbin case 15 is driven by the rotation of the lower shaft 12 to supply the lower thread for embroidery. Along with the rotation of the upper shaft 11, the needle base 4a installed on the head 4 is driven to embroidery on the cloth.

  In order to increase productivity, the embroidery machine is usually provided with a plurality of (for example, about 10 to 24) heads 4. The plurality of heads 4,... Are connected (connected) to one rotating shaft (upper shaft), and each head 4 includes a plurality of (for example, about 6 to 15) needles. Different color threads are connected (threaded) to each other. Therefore, the head 4 is embroidered using various colored threads according to the embroidery design.

  3 and 4 are a perspective view and a plan view showing a sewing frame driving device of a multi-head automatic embroidery machine according to the prior art.

  As shown in FIGS. 3 and 4, a conventional sewing machine for a multi-head automatic embroidery machine includes a table 2 on which a workpiece is placed, and a workpiece to be embroidered on the table 2 to be embroidered. And a sewing frame 3 for fixing the sewing machine. In this case, the sewing frame 3 includes a pair of long horizontal frames 3a and a pair of vertical frames 3b that support the workpiece on the upper portion of the table 2, and is configured in a substantially square frame shape. At the bottom of the table 2, a left-right direction transfer mechanism 20 (also referred to as “X-direction transfer mechanism 20”) and a front-rear direction transfer mechanism 30 (or “Y-direction transfer”) for driving the sewing frame 3 in the left-right-front-rear direction, respectively. Each is also provided with a mechanism 30 ".

  In this case, the front-rear direction transfer mechanism 30 is provided on a long timing belt 52 arranged in the front-rear direction (vertical direction) as shown in FIG. When the timing belt 52 is rotated by the Y-axis drive motor 50 that drives the front-rear direction transfer mechanism 30, a bearing block (not shown) that meshes with the timing belt 52 is moved to the front-rear direction frames 30a, 30b (or “ It also moves in the front-rear direction along the guide rail 31 provided on the Y-axis frame 30a, 30b ". In this case, since the sewing frame 3 is provided on the bearing block connection cover 40 in which the bearing block is provided, the sewing frame 3 moves in the front-rear direction by the movement of the bearing block.

  And the left-right direction transfer mechanism 20 is provided on the elongate timing belt (not shown) arrange | positioned in the left-right direction (lateral direction). If the timing belt is rotated by a left-right direction drive motor (or “X-axis drive motor”, not shown) that drives the left-right direction transfer mechanism 20, a bearing block (not shown) that meshes with the timing belt. Is not moved in the left-right direction along a guide rail provided on a left-right frame (also referred to as “X-axis frame”, not shown). In this case, since the sewing frame 3 is provided on a bearing block coupling cover (not shown in FIG. 5, 40) in which the bearing block is provided, the sewing frame 3 moves in the left-right direction due to the movement of the bearing block. .

  After the operator fixes the sewing object to be embroidered or other objects to the sewing frame 3, the embroidery design data desired by the operator is read from the outside, that is, from the floppy disk or the like through the operation panel 6. ) To execute the embroidery operation. Then, the left-right direction transfer mechanism 20 and the front-rear direction transfer mechanism 30 move the sewing frame 3 in the left-right direction and the front-rear direction based on the embroidery design data.

  Specifically, the left-right direction transfer mechanism 20 is driven by a left-right direction drive motor (not shown) driven in the forward / reverse direction by left-right direction movement data (also referred to as “X-axis movement data”). The forward / reverse driving force of the direction driving motor is transmitted to the sewing frame 3 via the timing belt and moved in the left-right direction. That is, a left-right bearing block (or “X-axis bearing block”) having a sewing frame 3 connected to a predetermined position of the timing belt is provided, and the sewing frame 3 is placed on the upper side of the left-right bearing block. It is configured to be movable in the left-right direction along a guide rail provided on a direction frame (also referred to as “X-axis frame”).

  On the other hand, as shown in FIG. 5, the front-rear direction transfer mechanism 30 has a front-rear direction drive motor 50 (also referred to as “Y-axis drive motor 50”) based on front-rear direction movement data (or also referred to as “Y-axis movement data”). By forward / reverse driving, the forward / reverse driving force of the front / rear direction driving motor 50 is transmitted to the sewing frame 3 via the timing belts 51 and 52 and moved in the front / rear direction. That is, a longitudinal bearing block (or also referred to as a “Y-axis bearing block”) in which the sewing frame 3 is connected to a predetermined position of the timing belt 52 is provided, and the sewing frame 3 is placed on the upper side of the longitudinal bearing block. It is configured to be movable in the front-rear direction along a guide rail 31 provided on the front-rear direction frames 30a, 30b.

  In order to expand the range of movement of the sewing frame 3 in the front-rear direction, the front-rear direction frames 30a, 30b that fix the front and rear portions of the sewing frame 3 are a front-rear direction frame 30a and a rear-rear direction frame 30b. And are provided separately. Both front and rear direction frames 30a and 30b are configured to be movable in the front and rear direction along guide rails in which front and rear direction bearing blocks (not shown) are provided. In this case, both the front and rear bearing blocks are connected to the bearing block connecting cover 40 and the sewing frame 3 is placed on the upper side of the bearing block connecting cover 40. As shown in FIG. 5, the timing belt 52 is provided only on the front / rear frame 30 b (rear) located at the rear portion of the sewing frame 3, and the front and rear provided in the bearing block coupling cover 40. A directional bearing block is configured to be coupled and transported with the timing belt 52.

  However, in the sewing frame driving device of the conventional multi-head type automatic embroidery machine having the above-described configuration, when the movement range of the sewing frame 3 is expanded, the length of the timing belt 52 must be increased in the front-rear direction. Since the length of the timing belt 52 increases in the front-rear direction, there is a problem in that vibration occurs when the front-rear bearing block is transferred.

  Further, the sewing frame driving device of the conventional multi-head type automatic embroidery machine includes a (rear) front / rear frame 30b provided with a timing belt 52 and a front / rear frame 30a (front) formed with a guide rail 31. It is composed of two frames, and a single bearing block connecting cover 40 is formed on both the front and rear frames 30a and 30b. In such a case, when the strength of the bearing block connecting cover 40 is weak, the bearing is located on the (front) front / rear frame 30a side as compared to the (rear) front / rear frame 30b side where power is directly transmitted from the timing belt 52. Since the support force of the block connection cover 40 becomes relatively weak, there is a problem that the sewing frame 3 is shaken when the sewing frame 3 is moved forward, and the quality of sewing is lowered.

  In addition, since the sewing frame driving device of the conventional multi-head type automatic embroidery machine is configured to transfer the sewing frame 3 by the timing belt 52, a slip may occur when the timing belt 52 transmits power, There is a problem that the belt is loosened. In such a case, since accurate power transmission is not performed, there is a problem that the timing belt 52 has to be replaced after disassembling all the transfer mechanisms, and unnecessary time and cost are required.

  Accordingly, the present invention has been devised to solve the above-described problems, and a first object of the present invention is to sew a sewing machine having a power transmission device using a rack and pinion drive system. The object is to provide a frame driving device.

  Further, a second object of the present invention is to provide a sewing frame drive device for a sewing machine that can transmit a uniform transfer driving force to the front / rear part of the sewing frame to improve the driving reliability when the sewing frame is transferred. Is to provide.

  Further, the third object of the present invention is to provide a sewing frame that is equal to the entire sewing frame by transferring a sewing frame transfer frame provided on one fixed frame using a power transmission device using a rack and pinion drive system. An object of the present invention is to provide a sewing frame driving device for a sewing machine that transmits a transfer driving force, solves a phenomenon in which the quality of embroidery is deteriorated due to shaking of a sewing frame during a transfer operation, and enables high-speed operation.

  A sewing frame driving device for a sewing machine according to the present invention for achieving the above object includes one or more left and right direction transfer mechanisms (X direction) for transferring a sewing frame supporting a workpiece in the left and right direction (X-axis direction). A sewing frame drive device for a sewing machine comprising: a transfer mechanism) and one or more front-rear direction transfer mechanisms (Y-direction transfer mechanisms) that transfer the sewing frame in the front-rear direction (Y-axis direction). At least one of a mechanism (X-direction transfer mechanism) and a front-rear direction transfer mechanism (Y-direction transfer mechanism) is provided on a stationary frame provided on the main body of the sewing machine, and is movably provided on the fixed frame. A transfer frame, and a transfer frame driving means that meshes with the gear teeth formed on the transfer frame and reciprocates the transfer frame, the transfer frame driving means, A meshing member meshed with a gear tooth formed at a lower portion of the transfer frame, a plurality of rotating members that rotationally support the meshing member, and a driving body that applies a rotational force to the meshing member. .

  In the sewing frame drive device for a sewing machine according to the present invention, the transfer frame includes a plurality of track rollers provided at regular intervals on both sides, and a transfer guide for conveying the sewing frame in a direction orthogonal to the transfer frame on the upper side. A rail guide member.

  In the sewing frame driving device for a sewing machine according to the present invention, the fixed frame may include a plurality of track rollers provided at regular intervals on both sides.

  In the sewing frame driving device for a sewing machine according to the present invention, the fixed frame may further include an insertion hole for inserting the transfer frame driving means and meshing with the transfer frame.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the transfer frame is formed on both sides along the long axis so as to be supported and moved by the track roller of the fixed frame. A rail and a rail guide member for transferring and guiding the sewing frame in a direction orthogonal to the transfer frame may be provided on the upper side.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the rail guide member may be constituted by a roller.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the fixed frame is formed on both sides along the long axis so as to be supported and moved by the track roller of the transfer frame. And an insertion hole into which the transfer frame driving means is inserted and meshed with the transfer frame.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the rail guide member may be constituted by a roller.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the plurality of rotating members support the meshing member, and the driving body is a rotating member configured in a lower stage among the plurality of rotating members. The engaging member is positioned between the rotating members configured in the lower stage, and the engagement member is configured in a substantially bowl shape by the driving body configured between the rotating members. May be provided.

  In the sewing frame driving device for a sewing machine according to the present invention, the meshing member may be constituted by a belt-type member.

  In the sewing frame driving device for a sewing machine according to the present invention, the belt-type member may include gear teeth that mesh with gear teeth formed on the transfer frame.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the plurality of rotating members may be constituted by idlers.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the driving body may include gear teeth that mesh with the meshing member.

  In the sewing frame driving device for a sewing machine according to the present invention, the meshing member may be a chain-type member.

  In the sewing frame driving device for a sewing machine according to the present invention, the meshing member may be constituted by a pinion gear.

  Moreover, in the sewing frame drive device for a sewing machine according to the present invention, a configuration in which a lateral frame before and after the sewing frame is coupled to one side of the transfer frame may be employed.

  In the sewing frame drive device for a sewing machine according to the present invention, the sewing frame is provided on one side of the transfer frame of the left-right direction transfer mechanism (X-direction transfer mechanism) and moves the sewing frame in the left-right direction (X-axis direction). Before and after moving the sewing frame in the front-rear direction (Y-axis direction) provided on one side of the transfer frame of the left-right direction frame drive unit (X-direction frame drive unit) and the front-rear direction transfer mechanism (Y-direction transfer mechanism) Any one of the direction frame driving body (Y direction frame driving body) may be provided.

  In the sewing frame drive device for a sewing machine according to the present invention, the sewing frame is provided on one side of the transfer frame of the left-right direction transfer mechanism (X-direction transfer mechanism) and moves the sewing frame in the left-right direction (X-axis direction). Before and after moving the sewing frame in the front-rear direction (Y-axis direction) provided on one side of the transfer frame of the left-right direction frame drive unit (X-direction frame drive unit) and the front-rear direction transfer mechanism (Y-direction transfer mechanism) You may provide a direction frame drive body (Y direction frame drive body).

  In the sewing frame driving device for a sewing machine according to the present invention, a horizontal frame driving body (a horizontal frame driving body) that moves the sewing frame in the horizontal direction (X-axis direction) by a transfer frame of the horizontal transfer mechanism (X-direction transfer mechanism). X-direction frame drive body) and a front-rear direction frame drive body (Y-direction frame drive body) that moves the sewing frame in the front-rear direction (Y-axis direction) by a transfer frame of the front-rear direction transfer mechanism (Y-axis direction transfer mechanism). And the left and right direction frame driving body (X direction frame driving body) and the front and rear direction frame driving body (Y direction frame driving body), and the sewing frame is connected to the left and right direction (X axis direction) or the front and rear direction (Y axis). The sewing frame can be attached / detached by being connected to the left / right / front / rear direction frame driving body (X / Y direction frame driving body) and the left / right / front / rear direction frame driving body (X / Y direction frame driving body). And a coupling body to be fixed to.

  In the sewing frame drive device for a sewing machine according to the present invention, the sewing frame is provided on one side of the transfer frame of the front-rear direction transfer mechanism (Y-direction transfer mechanism) and moves the sewing frame in the front-rear direction (Y-axis direction). It is provided on one side of the front-rear direction frame driving body (Y-direction frame driving body) and the front-rear direction frame driving body (Y-direction frame driving body), and is transferred in the front-rear direction (Y-axis direction) to move the sewing frame left and right A left-right direction transfer mechanism (X-direction transfer mechanism) that moves in the direction (X-axis direction), and a connecting body that is connected to a transfer frame of the left-right direction transfer mechanism (X-direction transfer mechanism) and removably fixes the sewing frame And may be provided.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the transfer frame driving means may be provided on an upper part of a sewing machine table in an intermediate portion of the front-rear direction frame driving body (Y-direction frame driving body).

  In the sewing frame driving device for a sewing machine according to the present invention, the transfer frame of the left-right direction transfer mechanism (X-direction transfer mechanism) may include gear teeth in the upward direction.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the fixed frame provided on one side of the transfer frame of the front-rear direction transfer mechanism (Y-direction transfer mechanism) and the front and rear provided on one side of the fixed frame. A horizontal transfer mechanism (X-direction transfer mechanism) that is transferred in the direction (Y-axis direction) and moves the sewing frame in the left-right direction (X-axis direction), and a transfer frame of the left-right direction transfer mechanism (X-direction transfer mechanism) And a connecting body that is detachably fixed to the sewing frame.

  In the sewing frame driving device for a sewing machine according to the present invention, the transfer frame driving means may be provided on the upper part of the sewing machine table in the middle portion of the fixed frame.

  In the sewing frame driving device for a sewing machine according to the present invention, the transfer frame of the left-right direction transfer mechanism (X-direction transfer mechanism) may include gear teeth in the upward direction.

  Further, in the sewing frame driving device of the sewing machine according to the present invention, each of the transfer frame driving means may be provided with an individual driving source.

  In the sewing frame driving device for a sewing machine according to the present invention, the transfer frame driving means may be driven by a single driving source.

  In the sewing frame driving device for a sewing machine according to the present invention, the transfer frame driving means may be provided in an intermediate portion in the longitudinal direction of the fixed frame.

  In the sewing frame driving apparatus for a sewing machine according to the present invention, the main body of the sewing machine may include a table.

  Further, the power transmission device of the sewing frame driving device for a sewing machine according to the present invention is configured such that a rack in which gear teeth are formed, a meshing member meshed with the gear teeth of the rack, and the meshing member are rotatable. You may provide the several rotation member to support, and the drive body which gives a rotational force to the said meshing member.

  Further, in the power transmission device of the sewing frame driving device for a sewing machine according to the present invention, the plurality of rotating members support the meshing member, and the driving body is configured in a lower stage among the plurality of rotating members. The rotating member is configured at a position higher than the rotating shaft of the rotating member, and is positioned between the rotating members configured at the lower stage, and the engagement member is configured by the driving body configured between the rotating members. You may provide a substantially bowl shape.

  Moreover, in the power transmission device of the sewing frame drive device for a sewing machine according to the present invention, the meshing member may be constituted by a belt-type member.

  In the power transmission device of the sewing frame driving device for a sewing machine according to the present invention, the belt-type member may include gear teeth that mesh with gear teeth formed on the rack.

  In the power transmission device for the sewing frame driving device for a sewing machine according to the present invention, the plurality of rotating members may be constituted by idlers.

  In the power transmission device of the sewing frame drive device for a sewing machine according to the present invention, the drive body may include gear teeth meshed with the meshing member.

  In the power transmission device of the sewing frame driving device for a sewing machine according to the present invention, the meshing member may be formed of a chain-type member.

  Therefore, by transferring a sewing frame transfer frame provided on one fixed frame using a power transmission device using a rack and pinion drive system, an equal transfer driving force can be transmitted to the entire sewing frame. Therefore, it is possible to solve the phenomenon that the quality of the embroidery is lowered due to the shaking of the sewing frame during the transfer operation, and as a result, there is an advantage that high speed operation is possible.

  As described above, according to the sewing frame driving device of the sewing machine according to the present invention, the gear teeth that mesh with the meshing member connected to the driving source are formed at the lower part of one transfer frame in which the sewing frames are fixedly supported. By transferring the transfer frame directly, a uniform transfer force can be transmitted to the front / rear part of the sewing frame when the sewing frame is transferred in the left-right direction (X-axis direction) or the front-rear direction (Y-axis direction). Therefore, reliable and stable transfer work can be performed.

  That is, the sewing frame that is placed on the connecting member that connects the two transfer frames and is transferred as in the conventional case, if the transfer length becomes long or the strength of the connecting member becomes weak, the transfer work Occasionally shaking occurred and the quality of embroidery deteriorated, but the present invention fixed a long horizontal frame before and after the sewing frame on a single transfer frame. Since the uniform transfer driving force can be transmitted to the entire sewing frame by transferring the sewing frame, it is possible to prevent the problem that the sewing frame is shaken and the quality of the embroidery is deteriorated during the transfer operation. Can do.

  In addition, the same effects as described above can be achieved with respect to all the left-right direction transfer mechanisms (X-direction transfer mechanisms).

  In addition to improving the accuracy and high-speed operability and durability of the sewing frame, even when driving a large sewing frame, while minimizing the number of parts, cost (cost), driving noise, etc. There are excellent effects that the sewing frame can be prevented from being bent and deformed and driven with high accuracy.

  In the conventional sewing frame drive mechanism, the drive source (drive motor) for moving the sewing frame is located at the end of the machine body (main body). However, in the present invention, a drive source (drive motor) for moving the sewing frame is provided in an intermediate portion of the machine body (main body). The front and rear tables can all be separated during transportation (see FIG. 15), and can be easily loaded into the container (the packaging space is minimized).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<First Embodiment>
FIG. 6 is a configuration diagram illustrating the sewing frame driving device of the sewing machine 100 according to the first embodiment of the present invention.

  The sewing frame drive device of the sewing machine 100 according to the first embodiment of the present invention is configured such that the sewing frame 120 is placed on the upper part of the transfer frame 220, and supports the object to be sewn as shown in FIG. One or more left-right direction transfer mechanisms 130X (also referred to as “X-direction transfer mechanism 130X”) for transferring the sewing frame 120 to be moved in the left-right direction (or also referred to as “X-axis direction”), and the sewing frame 120 in the front-rear direction. One or more front-rear direction transfer mechanisms 130Y (or also referred to as “Y-direction transfer mechanisms 130Y”) that are transferred in the direction (or also referred to as “Y-axis direction”). The left-right direction transfer mechanism 130X and the front-rear direction transfer mechanism 130Y will be described in detail with reference to FIGS.

Second Embodiment
FIG. 7 is a configuration diagram showing a sewing frame driving device of the sewing machine 100 according to the second embodiment of the present invention.

  As shown in FIG. 7, the sewing frame driving device of the sewing machine 100 according to the second embodiment of the present invention includes one or more left and right direction transfer mechanisms 130X that transfer the sewing frame that supports the sewing object in the left and right directions, One or more front-rear direction transfer mechanisms 130 </ b> Y that transfer the sewing frame in the front-rear direction are provided below the sewing machine table 110. A left-right frame driver 120X (also referred to as “X-direction frame driver 120X”) that is provided (configured) above the transfer frame of the left-right direction transfer mechanism 130X and moves the sewing frame in the left-right direction; The front / rear direction frame driving body 120Y (or “Y direction frame driving”) is connected to the direction frame driving body 120X and provided (configured) on the upper side of the transfer frame of the front / rear direction transfer mechanism 130Y to move the sewing frame in the front / rear direction. Body 120Y "). In this case, the sewing frame is configured by combining one left-right frame driving body 120X and a plurality of front-rear direction frame driving bodies 120Y.

  As shown in FIG. 7, the sewing frame driving device of the sewing machine 100 according to the present embodiment may be configured using both the left and right direction frame driving body 120X and the front and rear direction frame driving body 120Y. You may comprise using only any one of the direction frame drive body 120X and the front-back direction frame drive body 120Y.

<Third Embodiment>
FIG. 8 is a configuration diagram showing a sewing frame driving device for a sewing machine according to a third embodiment of the present invention.

  As shown in FIG. 8, the sewing frame drive device for a sewing machine according to the third embodiment of the present invention includes a left-right frame drive body 120 </ b> X that moves the sewing frame 120 in the left-right direction by the transfer frame of the left-right direction transfer mechanism 130 </ b> X, The sewing frame 120 is connected to the front / rear direction frame driving body 120Y for moving the sewing frame in the front / rear direction by the transfer frame of the front / rear direction transfer mechanism 130Y, the left / right direction frame driving body 120X, and the front / rear direction frame driving body 120Y. The sewing frame 120 is detachably fixed by being connected to the left / right / front / rear direction frame driver 120XY (also referred to as “X / Y direction frame driver 120XY”) to be moved in the direction and the left / right / front / rear direction frame driver 120XY. A connecting body 160.

  In such a case, the left-right frame driver 120X is provided (configured) on the upper side of the transfer frame of the left-right direction transfer mechanism 130X, and moves the sewing frame 120 in the left-right direction. Provided (configured) above the transfer frame of the direction transfer mechanism 130Y, and moves the sewing frame 120 in the front-rear direction. The left / right / front / rear direction frame driving body 120XY is connected to the left / right direction frame driving body 120X and the front / rear direction frame driving body 120Y to transfer the sewing frame 120 in the left / right direction or the front / rear direction. In this case, the sewing frame 120 is detachably installed (fixed) by the connecting body 160 provided on the left / right / front / rear direction frame driving body 120XY, and one or a plurality of sewing frames 120 are installed (fixed) above the sewing machine table.

<Fourth embodiment>
FIG. 9 is a block diagram showing a sewing frame drive device for a sewing machine according to a fourth embodiment of the present invention.

  As shown in FIG. 9, the sewing frame drive device for the sewing machine according to the fourth embodiment of the present invention is provided (configured) on one side of the transfer frame of the front / rear direction transfer mechanism 130Y, and the sewing frame 120 is moved in the front / rear direction. A front / rear direction frame drive body 120Y to be moved, a left / right direction transfer mechanism 130X which is provided on one side of the front / rear direction frame drive body 120Y and is moved in the front / rear direction to move the sewing frame 120 in the left / right direction, and a left / right direction transfer mechanism 130X. And a connecting body 160 that is connected to the transfer frame and detachably fixes the sewing frame 120. In this case, the left-right direction transfer mechanism 130X is provided with a transfer frame of the left-right direction transfer mechanism 130X on one side of the front-rear direction frame driver 120Y, and the upper part of the intermediate sewing machine table in the transfer frame of the left-right direction transfer mechanism 130X. In addition, a transfer frame driving means 150 is provided. The sewing frame 120 is connected and installed (fixed) to the transfer frame of the left-right direction transfer mechanism 130X by a connecting body 160 that is provided above the sewing machine table and is detachably connected.

<Fifth Embodiment>
FIG. 10 is a configuration diagram showing a sewing frame driving device of the sewing machine 100 according to the fifth embodiment of the present invention, and shows a structure of a single-head embroidery machine or a sewing machine as an example.

  As shown in FIG. 10, the sewing frame drive device for the sewing machine 100 according to the fifth embodiment of the present invention is a fixed frame (not shown) provided (configured) on one side of the transfer frame of the front-rear direction transfer mechanism 130Y. 2), a left-right direction transfer mechanism 130X that is provided on one side of the fixed frame and is transferred in the front-rear direction to move the sewing frame 120 in the left-right direction, and the sewing frame 120 connected to the transfer frame of the left-right direction transfer mechanism 130X. And a connecting body 160 that removably fixes the connector. In such a case, the sewing frame 120 is connected to the transfer frame of the left-right direction transfer mechanism 130X by a connecting body 160 that is provided above the sewing machine table and is detachably connected thereto, and is connected by the left-right direction transfer mechanism 130X and the front-rear direction transfer mechanism 130Y. , Can move freely in the left-right and / or front-back direction.

<Sewing machine for sewing frame>
FIGS. 11 to 14 are diagrams showing the sewing frame driving device of the sewing machine according to the embodiment of the present invention. FIG. FIG. 12 is an exploded perspective view of the sewing frame driving device, and FIGS. 13a and 13b are diagrams showing the configuration of the transfer frame, respectively. These are the block diagrams which show the rack-shaped gear teeth and the transfer frame driving means 150.

  As shown in FIGS. 11 to 14, the left-right direction transfer mechanism 130 </ b> X and the front-rear direction transfer mechanism 130 </ b> Y are configured to be fixed on (installed on) the main body of the sewing machine and movable on the fixed frame 210 ( A transfer frame 220 having a gear tooth 225 formed at a lower portion thereof, a transfer frame driving means 150 that meshes with a gear tooth 225 formed at a lower portion of the transfer frame 220 to reciprocate the transfer frame 220, and a transfer frame And a driving motor 140 that provides driving force to the driving means 150.

  Here, as shown in the drawing, the fixed frame 210 is provided on the upper surface side with a guide rail 211 (guide rail) that is formed along the long axis and on both sides of the guide rail 211 at regular intervals. And a plurality of track rollers 212 (track rollers).

  The transfer frame 220 includes guide rails 221 that are elongated along the long axis on both sides so that the transfer frame 220 is supported and moved by the track roller 212 of the fixed frame 210, and is further orthogonal to the transfer frame 220. A rail guide member 222 (rail guide pin) is provided on the upper side so as to transfer and guide the sewing frame.

  Further, as shown in FIG. 14, the transfer frame driving means 150 includes a meshing member 152 that meshes with gear teeth 225 formed in the lower part of the transport frame 220, and a plurality of idlers that rotatably support the meshing member 152. , And a driving body 151 that applies a rotational force to the meshing member 152 by the driving force of the driving motor 140. The rotating member 153, 154, 155,. In such a case, the drive body 151 is configured by a drive gear provided with gear teeth that mesh with the gear teeth 225 of the meshing member 152 as a drive pulley.

  The meshing member 152 is preferably composed of a belt-type transmission member, and the driving body 151 is preferably composed of a driving pulley. In this case, the belt-type transmission member is constituted by a timing belt provided with gear teeth 152 a meshed with gear teeth 225 formed at the lower portion of the transfer frame 220. The meshing member 152 made of the timing belt is provided with gear teeth 152a meshing with gear teeth 225 formed at the lower portion of the transfer frame 220 on one side surface, while the other contacting the rotating members 153, 154, and 155 is provided. A friction member that increases the rotational frictional force can be integrated and configured (formed) on the side surface.

  The transfer frame driving means 150 is configured such that the meshing member 152 is rotatably supported (rotatably supported) by rotating members 153, 154, and 155 configured by a plurality of idlers. In this case, the driving body 151 formed between the two rotating members 153 and 154 is positioned above the two rotating members 153 and 154 as shown in FIG. Gear teeth are formed. Therefore, since the meshing member 152 is meshed with the gear teeth of the driving body 151 and rotates, the meshing member 152 does not generate a slip at the time of rotation and can transmit an accurate rotational force, and also enables high-speed rotation.

  On the other hand, as the meshing member 152, other transmission members may be used in addition to the belt-type transmission member. For example, a rack and a pinion gear may be used, or a chain-type transmission member may be used.

  In another embodiment, the transfer frame driving means 150 includes a meshing member (not shown) that meshes with gear teeth 225 formed in the lower part of the transfer frame 220, and a meshing member that is driven by the driving force of the drive motor 140. And a driving body that applies a rotational force to the motor. In such a case, the meshing member may use a pinion gear, and the driving body preferably uses a driving pulley.

  In the sewing machine sewing frame front / rear direction transfer mechanism 130Y according to the present invention, a guide rail for guiding the transfer frame 220 in the front / rear direction is coupled and mounted on the upper side of the fixed frame 210 fixed to the main body (machine body) of the sewing machine. The transfer frame 220 is fastened to the both ends of the transfer frame 220 so as to be slidable in the front-rear direction along the guide rail. The front and rear horizontal frames 120a and 120b are respectively mounted.

  In such a case, a transfer frame driving means 150 connected to a drive motor 140 that provides a transfer driving force for moving the sewing frame 120 in the front-rear direction is provided (formed) at a substantially intermediate portion below the fixed frame 210. Inside the transfer frame driving means 150, a driving body 151 (or a driving gear 151) fitted to the outer peripheral portion of the driving shaft 141 of the driving motor 140 is mounted, and further, on the outer peripheral portion of the driving body 151. , A meshing member 152 for converting the rotational driving force of the driving motor 140 into a linear driving force is fitted to the outer periphery of the plurality of rotating members 153, and the gear teeth 221 formed on the lower surface of the transfer frame 220; Provided to couple.

  The plurality of rotating members 153 include rotating members such as pulleys and gears.

  Specifically, the operation principle of the above-described sewing frame transfer structure will be described. In the front-rear direction transfer mechanism 130Y, the drive motor 140 rotates in the forward / reverse direction based on the front-rear movement data (also referred to as “Y-axis movement data”). When driven, the forward / reverse rotational driving force of the driving motor 140 is converted into a linear driving force in the front-rear direction via the driving gear 151, the plurality of rotating members 153, 154, 155, and the meshing member 152, and the transfer frame 220. The sewing frame 120 placed and fixed on the transfer frame 220 is moved in the front-rear direction.

  That is, the gear teeth 221 formed on the lower surface portion of the transfer frame 220 and the gear teeth 152a of the meshing member 152 are coupled, so that the sewing frame 120 extends in the front-rear direction along the guide rail provided on the fixed frame 210. Will be moved to.

  Note that a plurality of the front-rear direction transfer mechanisms 130Y may be installed depending on the size of the sewing frame.

  Each embodiment of the sewing frame transfer structure disclosed above has been described with reference to the front-rear direction transfer mechanism 130Y. However, the application of the present invention is not limited to the above-described embodiment, and The same configuration can be adopted for the direction transfer mechanism 130X.

  That is, according to the sewing machine sewing frame left and right direction transfer mechanism 130X according to the present invention, the guide rail for guiding the transfer frame 220 in the left and right direction is coupled with the bearing on the upper side of the fixed frame 210 fixed to the main body (machine body) of the sewing machine. It is attached to both ends of the transfer frame 220 and fastened to the guide rail and the bearing so as to be slidable in the left and right axial directions along the guide rail. The left and right direction front and rear frames and the vertical frame of the sewing frame 120 are respectively placed and configured.

  In such a case, a transfer frame driving means 150 connected to a drive motor 140 that provides a transfer driving force for moving the sewing frame 120 in the left-right direction is provided (formed) at a substantially intermediate portion below the fixed frame 210. However, a driving body 151 (or a driving gear 151) fitted to the outer peripheral portion of the driving shaft 141 of the driving motor 140 is mounted inside the transfer frame driving means 150, and further, on the outer peripheral portion of the driving body 151, A meshing member 152 for converting the rotational driving force of the driving motor 140 into a linear driving force is fitted to the outer peripheral portion of the plurality of rotating members 153 and coupled to the gear teeth 221 formed on the lower surface portion of the transfer frame 220. To be provided.

  The plurality of rotating members 153 include rotating members such as pulleys and gears.

  Specifically, the operating principle of the sewing frame transfer structure described above will be described. When the drive motor 140 is rotated in the forward / reverse direction by the left / right axis movement data, the left / right direction transfer mechanism 130X is forward / reverse of the drive motor 140. The rotational driving force is converted into a linear driving force in the left-right direction via the driving gear 151, the plurality of rotating members 153, 154, 155, and the meshing member 152, and transmitted to the transfer frame 220. The sewing frame 120 placed and fixed is moved in the left-right direction.

  That is, the gear teeth 221 formed on the lower surface portion of the transfer frame 220 and the gear teeth 152a of the meshing member 152 are coupled, so that the sewing frame 120 moves in the horizontal direction along the guide rail provided on the fixed frame 210. Will be moved to.

  Note that a plurality of left-right direction transfer mechanisms 130X may be installed depending on the size of the sewing frame.

<Power transmission device>
A power transmission device using a rack and pinion drive system according to each embodiment of the present invention will be described with reference to FIG. 14. The power transmission device meshes with a rack in which gear teeth are formed and the gear teeth of the rack. An engagement member, a plurality of rotation members that rotatably support the engagement member, and a drive body that applies a rotational force to the engagement member.

  Here, the plurality of rotating members are rotatably supported so that the meshing member has a trapezoidal shape, and the driving body is a position higher than the rotating shaft of the rotating member configured in the lower stage among the plurality of rotating members having the trapezoidal shape. The engagement member is positioned (arranged) between the two rotating members configured (arranged) in the lower stage and is arranged (arranged) between the two rotating members. The shape of one side of the trapezoid has a substantially bowl shape (substantially inverted U shape).

  Here, the meshing member is preferably a belt-type transmission member, and the driving body is preferably a driving pulley. The belt-type transmission member includes gear teeth on one side that mesh with gear teeth formed in the lower portion of the transfer frame. In such a case, the belt-type transmission member can be provided with a friction member on the other side that increases the rotational friction force with the rotation member.

  The plurality of rotating members are constituted by idlers, and the driving body includes gear teeth meshed with the meshing members.

  Further, a chain-type transmission member can be used as the meshing member, and a driving pulley can be used as the driving body.

  In addition, the drive source that provides the driving force to the sewing frame transfer structure according to each of the above embodiments can be provided for each transfer frame drive means, and one output shaft is used by using one common drive motor. Can be simultaneously connected (connected) to a plurality of drive boxes.

  Here, the meshing member provided inside the transfer frame driving means can be composed of a belt-shaped transmission member such as a timing belt, or can be composed of a transmission member such as a chain. It can also be configured with an electric gear that abuts (directly) the body.

  The driving body provided inside the transfer frame driving means and connected to the driving source may be a timing pulley, a sprocket gear, a driving gear, a driving pulley, etc. In short, a device capable of transmitting the power of the driving source. And means.

  Further, the sewing frame driving device for the sewing machine as described above can be applied to all sewing machines that can employ the front-rear direction transfer mechanism or the left-right direction transfer mechanism.

  In addition, the transfer frame 220 used in the present invention is provided on the upper side so as to guide the plurality of track rollers 212 provided at regular intervals on both sides and the sewing frame 120 in a direction orthogonal to the transfer frame 220. A rail guide member 222 may be provided. The fixed frame 210 is inserted with guide rails 222 that are elongated along the long axis on both sides so as to be supported and moved by the track roller 212 of the transfer frame 220, and transfer frame driving means. An insertion hole 213 that meshes with 220 may be provided. In such a case, the rail guide member 222 is preferably composed of a roller.

  As described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made by those skilled in the art, and these are included in the spirit and scope of the present invention defined in the claims. It should be understood.

It is a general view of the conventional multi-head type automatic embroidery machine, and shows a front view. It is a principal part schematic diagram in the head and bobbin case drive part of the conventional multi-head type automatic embroidery machine, and shows a front view It is a general view in the sewing frame drive device of the conventional multi-head type automatic embroidery machine, Comprising: A perspective view is shown. It is a general view in the sewing frame drive device of the conventional multi-head type automatic embroidery machine, Comprising: A top view is shown. It is a principal part schematic diagram of the front-back direction transfer mechanism in the sewing frame drive device of the conventional multi-head type automatic embroidery machine, Comprising: A perspective view is shown. 1 is an overall view of a sewing frame drive device for a sewing machine according to a first embodiment of the present invention, and is a perspective view. FIG. It is a general view of the sewing frame drive device of the sewing machine concerning 2nd Embodiment of this invention, Comprising: A perspective view is shown. It is a whole view of the sewing frame drive device of the sewing machine concerning 3rd Embodiment of this invention, Comprising: A perspective view is shown. It is a general view of the sewing frame drive device of the sewing machine concerning 4th Embodiment of this invention, Comprising: The top view is shown. It is a general view of the sewing frame drive device of the sewing machine concerning 5th Embodiment of this invention, Comprising: A perspective view is shown. It is a principal part schematic diagram of the sewing frame drive device of the sewing machine concerning each said embodiment, Comprising: A perspective view is shown. It is a principal part schematic of the sewing frame drive device of the sewing machine concerning the embodiment, Comprising: An exploded perspective view is shown. It is a principal part schematic diagram of the transfer frame concerning the embodiment, Comprising: The upper side perspective view is shown. It is a principal part schematic diagram of the transfer frame concerning the embodiment, Comprising: The perspective view of the downward side is shown. It is a whole view of the transfer frame drive means concerning the embodiment, Comprising: A side view is shown. It is a principal part schematic of the sewing frame drive device concerning this invention, Comprising: A perspective view is shown.

Explanation of symbols

100 sewing machine 110 table (sewing machine table)
120 Sewing frame (embroidery frame, embroidery frame)
120a Horizontal frame of sewing frame 120X Left and right direction frame driving body (X direction frame driving body)
120Y Front / rear direction frame driving body (Y direction frame driving body)
120XY Left / right / front / rear direction frame driver (X / Y direction frame driver)
130 Transfer mechanism (left-right direction transfer mechanism, front-rear direction transfer mechanism)
130X Left-right direction transfer mechanism (X-direction transfer mechanism)
130Y Front-rear direction transfer mechanism (Y-direction transfer mechanism)
140 Drive source (drive motor)
141 (Rotation axis of the drive motor) 140X Left / right direction drive motor (X axis drive motor)
140Y Front-rear direction drive motor (Y-axis drive motor)
150 transfer frame drive means 150X right and left direction transfer claim drive means (X axis transfer frame drive means)
150Y Front-rear direction transfer frame drive means (Y-axis transfer frame drive means)
151 Drive body (drive pulley)
152 meshing member 152a gear tooth 153 rotating member (idler)
154 Rotating member (idler)
155 Rotating member (idler)
160 Connecting body 210 Fixed frame 211 Guide rail 212 Track roller 213 Insertion hole 220 Transfer frame 221 Guide rail 222 Rail guide member 223 Roller shaft 224 Roller 225 Gear teeth

Claims (2)

A sewing frame drive device for a sewing machine comprising one or more left-right direction transfer mechanisms for transferring a sewing frame for supporting a sewing object in the left-right direction, and one or more front-rear direction transfer mechanisms for transferring the sewing frame in the front-rear direction. Because
At least one of the left-right direction transfer mechanism and the front-rear direction transfer mechanism is a fixed frame provided on the main body of the sewing machine, a transfer frame provided movably on the fixed frame, and formed with gear teeth, A transfer frame driving means which meshes with the gear teeth formed on the transfer frame and reciprocates the transfer frame;
The transfer frame driving means includes a meshing member meshed with a gear tooth formed at a lower portion of the transport frame, a plurality of rotating members that rotationally support the meshing member, and a driving body that applies a rotational force to the meshing member. A sewing frame driving device for a sewing machine comprising:   The transfer frame includes a plurality of track rollers provided at regular intervals on both sides, and a rail guide member on the upper side for transferring and guiding the sewing frame in a direction orthogonal to the transfer frame. A sewing frame drive device for a sewing machine according to the description.

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