JP4839907B2 - Pattern sewing machine feed device - Google Patents

Description

  The present invention relates to a feed device for a pattern stitching sewing machine, and has improved the layout of a first direction feed means for feeding in a direction parallel to the main shaft and a second direction feed means for feeding in a direction orthogonal to the main shaft, thereby reducing the size of the pattern stitching sewing machine. About things.

  The pattern sewing machine is a sewing machine that sews various patterns such as patterns, patterns, and figures on work cloths of various sizes. The pattern sewing machine feed device consists of a frame-shaped feed plate and presser foot that are placed on the table and supports the work cloth, a presser arm that supports and moves the feed plate and the work clamp, and this presser arm is parallel to the machine spindle. Y-direction feeding means and X-direction feeding means for independently moving and driving in the Y direction and the X direction orthogonal to the Y direction.

  The X-direction feed means includes an X-feed base that moves in the X direction within the first movement region, an X-direction guide mechanism that guides the X-feed base, and an X-direction timing belt that moves and drives the X feed base in the X direction. An X driving unit including The Y-direction feed means moves in the Y direction within the second movement area within the first movement area, a Y-direction guide mechanism that guides the Y-feed base, and moves the Y-feed base in the Y direction. A Y drive unit including a Y-direction timing belt to be driven is included.

Here, in the feeding device of the conventional pattern sewing machine is different is usually the X-direction feed means is disposed in the first moving area adjacent to the rear of the table, the arrangement of the Y direction feeding means Proposed. For example, in the pattern stitch sewing machine shown in FIG. 7 (prior art) of Patent Document 1, the Y-direction feeding means is disposed by utilizing the lower space in the pedestal portion of the sewing machine frame and the space connected to the rear thereof. However, in this arrangement, the Y-direction feed stroke is restricted by the sewing machine frame.

Therefore, in the pattern sewing machine feeding device described in the embodiment of Patent Document 1, the Y-direction feeding table is disposed on the X-direction feeding table so as to be movable in the Y-direction, and the left and right spaces of the first moving area are arranged. In addition, a Y-direction timing belt of the Y-direction feeding means is provided, and a long Y-direction moving body extending in the X direction over a pair of Y moving members that move along the Y-direction timing belt on both the left and right sides. The Y feed base is provided to the Y-direction moving body so as to be movable in the X-direction.
Japanese Patent Publication No.7-114863

In the pattern sewing machine feeding device of Patent Document 1, since the Y-direction timing belt of the Y-direction feeding means is arranged on both the left and right sides of the first movement region, the full width in the left-right direction of the pattern sewing machine feeding device (that is, , The total width of the sewing machine) becomes large, and there is a problem that the feeder becomes large as a whole. In addition, the configuration of the Y-direction feeding means becomes complicated, the number of parts increases, and the manufacturing cost becomes expensive.
Furthermore, since the Y-direction feed base is configured to move in the left-right direction via a long Y-direction moving body, the Y-direction feeding accuracy due to elastic deformation of the Y-direction moving body is likely to decrease. Furthermore, the long Y-direction moving body is heavy and difficult to reduce in weight, which is disadvantageous in increasing the speed of Y-direction feeding.

In the conventional pattern sewing machine feeding device, the components on the left and right sides of the machine frame and above the upper surface of the table are effectively used to arrange the components and devices of the Y-direction feeding means. However, it was difficult to reduce the size of the sewing machine.
It is an object of the present invention to reduce the overall width in the left-right direction of the pattern sewing machine in a pattern sewing machine feeding device, thereby enabling the size reduction of the feeding device, and to increase the first-direction feeding accuracy for feeding in the direction parallel to the main shaft. In other words, the configuration of the first direction feeding means is simplified, the number of parts is reduced, and the manufacturing cost is reduced.

The pattern sewing sewing machine feed apparatus according to claim 1 is a table, a frame-shaped feed plate and a presser foot for holding a work cloth on the table, and a first direction parallel to the main spindle direction of the sewing machine. And a sewing machine having a first direction feed means and a second direction feed means that are driven to move in a second direction orthogonal to the first direction, wherein the second direction feed means is less than the table. A second feed base that moves the first movement area on the rear pedestal side in the second direction is provided, and the first direction feeding means moves the second movement area on the second feed base in the first direction. A first feed base, a pair of first direction guide rails disposed on the left and right sides of the sewing machine frame at positions higher than the first feed base, and the first feed base on the left and right sides of the sewing machine frame A pair of first direction guidelays at a high position And a pair of first direction arms that are respectively guided so as to be movable in the first direction, and a pair of first direction arms that are arranged so as to correspond to the pair of first direction arms. A pair of first direction timing belts , wherein at least a part of the pair of first direction guide rails is disposed so as to wrap in a plan view with the first movement region, It has an upper surface portion and a lower surface portion that circulate while being spaced apart in the vertical direction, and the upper surface portion is disposed immediately below the moving region of the first direction arm .

When the pair of first direction timing belts of the first direction feeding means is driven, the pair of first direction arms connected to the first direction timing belt is guided by the pair of first direction guide rails. However, it is moved and driven in the first direction, and the first feed base is moved and driven in the first direction on the second feed base.
Since the pair of first direction guide rails and the pair of first direction arms of the first direction feeding means are disposed on the left and right sides of the sewing machine frame at positions higher than the first feed base, the sewing machine frame Since a pair of first direction guide rails and a pair of first direction arms can be arranged by effectively using the space above the first feed base on both the left and right sides of the sewing machine, the overall width of the feed device for the turn stitching machine is reduced. The sewing machine can be downsized.

According to a second aspect of the invention, there is provided a pattern sewing sewing machine feed device having the presser arm fixed to the first feed base and supporting the feed plate and the presser foot according to the first aspect of the invention. A guide arm that is fixed to the front ends of the pair of first direction arms and extends in the second direction, and is provided at the rear end portion of the presser arm and is guided along the rail member of the guide arm so as to be movable in the second direction. And a guided member .

  According to the first aspect of the present invention, the pair of first direction guide rails and the pair of first direction arms of the first direction feeding means are arranged on the left and right sides of the sewing machine frame at positions higher than the first feeding base. Since it is provided, a pair of first direction guide rails and a pair of first direction arms can be arranged by effectively using the space above the first feed base on the left and right sides of the sewing machine frame. By reducing the overall width of the sewing machine feeding device, the feeding device and the sewing machine can be reduced in size.

  Since the first direction arm can be disposed near the first direction guide rail, the structure of the first direction arm can be simplified. Since the distance between the pair of left and right first direction guide rails can be made significantly smaller than the left and right width of the first moving area where the second feed base moves, it is provided at the front end of the pair of first direction guide rails. It is possible to reduce the length of the guide member to be produced, and to suppress a decrease in the first direction feed accuracy due to elastic deformation of the guide member, and to reduce the weight of the guide member and to make the first direction feed It is also possible to increase the speed.

And since at least a part of the pair of first direction guide rails is disposed so as to wrap in a plan view with the first movement area, a part of the space above the first movement area is effectively utilized. Since at least a part of the pair of first direction guide rails can be disposed, the size of the pattern sewing machine feeding device can be reduced by reducing the size in the front-rear direction.

In addition, since the first direction timing belt has an upper surface portion and a lower surface portion that circulate while being separated from each other in the vertical direction, and the upper surface portion is disposed immediately below the moving region of the first direction arm, Since the structure for connecting the first direction timing belt is simplified and an excessive moment or the like does not act on the first direction timing belt, the durability of the first direction timing belt can be improved.

According to invention of Claim 2 , it has a presser arm which is fixed to the first feed base and supports the feed plate and the presser foot, and the first direction feed means is provided at the front end of the pair of first direction arms. The presser arm includes a guide arm that is fixed and extends in the second direction, and a guided member that is provided at a rear end portion of the presser arm and is guided to be movable in the second direction along the rail member of the guide arm. Since the force of the first direction feeding means can be transmitted to a portion close to the center of gravity of the arm, the first direction feeding can be smoothed. The length of the guide arms provided at the front ends of the pair of guide rails can be shortened, and it is possible to suppress a decrease in the first-direction feed accuracy due to elastic deformation of the guide arms, and the weight of the guide arms can be reduced. It is also possible to increase the first direction feed speed.

  The pattern sewing sewing machine feed device according to the present invention includes a table, a frame-shaped feed plate and a presser foot for holding a work cloth on the table, and the feed plate and the presser foot in a Y direction parallel to the machine main shaft direction. In a pattern sewing machine feeding device having a Y-direction feeding means and an X-direction feeding means that are independently driven to move in the X direction orthogonal to the Y direction, the X-direction feeding means is a pedestal portion rearward of the table. The Y-direction feeding means includes a Y-feed base that moves the second movement area on the X-feed base in the Y direction, and left and right sides of the sewing machine frame. A pair of Y-direction guide rails disposed on both sides at a position higher than the Y feed base and a pair of Y-direction guide rails at a position higher than the Y feed base are respectively guided so as to be movable in the Y direction. A pair of Y-direction arms and A pair of Y-direction timing belts arranged to correspond to the pair of Y-direction arms and connected to the pair of Y-direction arms, respectively, and at least one of the pair of first-direction guide rails. The first direction timing belt has an upper surface portion and a lower surface portion that circulate apart from each other in a plan view, and the upper surface portion is in the first direction. It is characterized in that it is arranged directly under the arm movement area.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 5, the pattern sewing machine M holds a work cloth with a sewing machine body 1, a table 2, a feed plate 3 and a cloth presser 4 to be described later, and a Y direction (first direction) ( (Spindle direction parallel to the main axis) and a feeding device F that is independently moved and driven in the X direction as a second direction orthogonal to the Y direction, and automatically sews based on sewing data such as patterns, patterns, figures, etc. Is.

  The sewing machine main body 1 has a pedestal column portion 5 and an arm portion 6 extending forward from the pedestal column portion 5, and includes various mechanisms for sewing similar to those of a normal sewing machine. Inside the arm portion 6 is equipped with a main shaft that extends horizontally in the front-rear direction and is driven by a sewing machine motor (not shown).

  As shown in FIGS. 1 to 5, the table 2 is composed of a plate member made of a rectangular plated steel plate or a stainless steel plate that is substantially the same size as the moving region shape of the feed plate 3 and the presser foot 4, A rear end portion and left and right end portions of the table 2 are fixed to the base frame 7 in a horizontal posture.

Hereinafter, the feeding device F of the pattern sewing machine M will be described.
As shown in FIGS. 1 to 4, the feeding device F includes a frame-shaped feed plate 3 and a presser foot 4 that hold a work cloth on a table 2, and a side surface on which the feed plate 3 and the presser foot 4 are equipped. "J" -shaped presser arm 8, a Y-direction feed mechanism 40 as a first direction feed means for moving and driving the presser arm 8 in the Y direction parallel to the machine spindle direction, and the presser arm 8 orthogonal to the Y direction And an X-direction feed mechanism 20 as second direction feed means for moving and driving in the X direction.

  As shown in FIG. 6, the feed plate 3 has a rectangular frame portion 3a that forms a sewing region on the inside and a connecting plate portion 3b that horizontally extends rearward from the rear end portion of the rectangular frame portion 3a. The rear end portion of the connecting plate portion 3b is fixed to the lower end of the presser arm 8 and the Y feed base 41 as the first feed base. Accordingly, the feed plate 3 is driven to move in the X direction and the Y direction integrally with the presser arm 8.

As shown in FIG. 1, the presser foot 4 is pressed against the upper surface of the rectangular frame portion 3a of the feed plate 3 to hold the work cloth, and extends rearward and upward from the rectangular frame portion 4a. And a pair of left and right connecting arms 4 b connected to the pressing mechanism 9 of the presser arm 8. A holding portion 10 is provided at the front end portion of the presser arm 8 to hold the upper end portions of the pair of connecting arms 4b so as to be movable up and down.
On the rear side of the holding portion 10, there are provided a pair of right and left pressing mechanisms 9 driven by air cylinders connected to the upper ends of the pair of connecting arms 4b. The pressing mechanism 9 is moved between a cloth holding position where the work presser 4 is lowered to hold the work cloth in cooperation with the feed plate 3 and a release position where the work presser 4 is lifted and separated from the feed plate 3. Thus, the presser foot 4 is actuated.

  As shown in FIGS. 4 and 5, the X-direction feed mechanism 20 includes an X-feed base 23 as a second feed base that moves in the X-direction the first movement region 22 on the side of the pedestal 5 behind the table 2. A pair of front and rear X-direction rail members 24 (rails of a linear guide) disposed in the X direction for guiding and supporting the front and rear portions of the X feed base 23, and near the left and right ends of the first moving region 22 It has a pair of left and right pulleys 25 arranged, an X-direction timing belt 26 hung on these pulleys 25, an X-direction drive motor 27 for driving the X-direction timing belt 26, and the like. The pair of X-direction rail members 24 are fixed to the upper surfaces of the horizontal plate members 7a and 7b of the base frame 7 (see FIG. 3). A belt accommodating space for accommodating the X-direction timing belt 26 is formed between the plate members 7a and 7b. The pair of pulleys 25 are pivotally attached to a pivot bracket 25 a fixed to the base frame 7.

  The X feed base 23 is configured by a substantially rectangular plate-like member having a size including the second movement region 42 in which the Y feed base 41 of the Y-direction feed mechanism 40 moves. The X feed base 23 is provided at substantially the same height as the table 2. A pair of left and right overhang portions 23 a are provided at both front and rear ends of the X feed base 23. A guided member (not shown) engaged with the front X-direction rail member 24 is provided on the lower surface side of the front end overhanging portion 23a, and the rear surface of the rear end overhanging portion 23a is provided on the lower surface side. A guided member (not shown) engaged with the X-direction rail member 24 is provided. Thus, the X feed base 23 is guided so as to be movable in a predetermined stroke horizontally in the X direction.

  The X-direction timing belt 26 has an upper surface portion 26a and a lower surface portion 26b that are spaced apart from each other in the vertical direction. Connected. The drive shaft 25 a of the left pulley 25 is driven via a gear mechanism by an X-direction drive motor 27 formed of a stepping motor, and this X-direction drive motor 27 is disposed on the left side of the columnar portion 5.

As shown in FIGS. 5 and 7, the X-direction feed mechanism 20 also includes a rectangular flat plate-like X feed plate 21 that can move in the X direction on the table 2 with the feed plate 3 and the presser foot 4 placed thereon. ing.
The X feed plate 21 has the same left-right width as the rectangular frame portion 3a of the feed plate 3 and the rectangular frame portion 4a of the presser foot 4, and the Y of the rectangular frame portion 3a of the feed plate 3 and the rectangular frame portion 4a of the presser foot 4 It is comprised by the thin plate member (For example, the plated steel plate or stainless steel plate about thickness 1mm) which has the front-back width including the movement area | region to a direction. A slit-like needle hole 21a extending in the X direction is formed in the center portion of the X feed plate 21 in the front-rear direction, and a plurality of opening holes 21b are formed in the front portion and the rear portion of the X feed plate 21 to reduce the weight in the front and rear directions. Is formed. However, these opening holes 21b may be omitted and the X feed plate 21 may be formed in a flat plate shape.

  A central portion (about a half-width portion of the left and right width) of the rear end portion of the X feed plate 21 is fixedly connected to the front end portion of the X feed base 23 by a plurality of screw members or bolts, and the X feed base 23 is in the X direction. The X feed plate 21 moves in the X direction integrally with the X feed base 23 while being in sliding contact with the upper surface of the table 2. Since the X feed plate 21 is not connected to the Y feed base 41, the X feed plate 21 does not move in the Y direction and moves only in the X direction. Therefore, the X feed plate 21 needs the slit-shaped needle holes 21a.

  The feed plate 3 moves in the X direction and the Y direction while being in sliding contact with the upper surface of the X feed plate 21. For example, the feed plate 3 is made of a synthetic resin material having excellent strength such as nylon, Teflon, or acrylic. . Therefore, the frictional resistance between the X feed plate 21 and the feed plate 3 can be reduced, and the work cloth can be reliably prevented from being contaminated by the abrasion powder generated from the lower surface portion of the feed plate 3.

  As shown in FIG. 1, the left and right rail members 30 that are the same as the table 2 are provided at the front end and the rear end of the first moving region 22 where the X feed base 23 of the X-direction feed mechanism 20 moves. Cover plates 31 are respectively fixed to the left end portion and the right end portion of the rail member 30, and cover plates 32 fixed to the X feed stand 23 are provided on both the left and right sides of the X feed stand 23 to move on the rail member 30. It is configured freely. A cover plate 33 is movably provided on the rail member 30 between the cover plates 31 and 32. The cover plate 33 is connected to the cover plate 32 and configured to be movable in the X direction.

As shown in FIGS. 1 to 5, the Y-direction feeding mechanism 40 is provided on the upper surface of the Y-feeding base 41 that moves in the Y-direction on the second movement region 42 on the X-feeding base 23 and the X-feeding base 23. As a pair of left and right first guide rails having a pair of Y direction rails 41 a for guiding a guided member (not shown) attached to the lower surface side of the Y feed base 41 in the Y direction and a Y direction rail member 43. Y-direction guide rails 44 and a pair of Y-direction arms 45 as a first direction arm.
Further, the Y-direction feed mechanism 40 includes an X-direction guide arm 46 fixed to the front ends of the pair of Y-direction arms 45, and a X-direction along the rail member 47 of the guide arm 46 provided on the presser arm 8. A pair of guided members 48 guided movably to the left and right, a pair of pulleys 49 on both the left and right sides, and a pair of Y-arms 45 that are hooked on the pulleys 49 and correspond to the pair of Y-direction arms 45 A Y-direction timing belt 50 as a first direction timing belt, a Y-direction drive motor 53 including a stepping motor, and the like are provided.

  As shown in FIGS. 1 to 5, the pair of Y-direction guide rails 44 are disposed at a position higher than the Y feed base 41 by a predetermined distance on both the left and right sides of the pedestal column portion 5 that is a part of the sewing machine frame. The pedestal column part 5 extends rearward. The front end portion of the Y-direction guide rail 44 wraps in plan view with the first movement area 22 (movement area of the X feed base 23), and the Y-direction guide rail 44 has an attachment member on the side surface of the pedestal 5. Is fixed through.

  Thus, since the Y-direction guide rail 44 and the Y-direction arm 45 are disposed in the left and right dead spaces of the pedestal 5, the left-right width of the feeding device F can be significantly reduced. In addition, since the Y-direction guide rail 44 and the Y-direction arm 45 can be disposed by effectively utilizing the space behind and above the first movement region 22, the front-rear width of the feeding device F can also be reduced. .

  A Y-direction rail member 43 (linear guide rail) is fixed to the lower surface of the Y-direction guide rail 44. The pair of Y-direction arms 45 are disposed substantially in parallel near the lower side of the pair of Y-direction guide rails 44, respectively. The Y-direction arm 45 includes a straight arm main body 45a having substantially the same length as the Y-direction guide rail 44, and a leg plate member 45b fixed to the lower surface of the arm main body 45a. Most of the Y direction arm 45 is disposed at a position higher than the Y feed base 41, and most of the Y direction arm 45 wraps with the Y direction guide rail 44 in plan view. A pair of guided members 45c are fixed to the upper surface of the rear portion of the Y direction arm 45, and these guided members 45c engage with the Y direction rail member 43 and move in the Y direction along the Y direction guide rail 44. Guided freely.

  The pair of Y-direction timing belts 50 correspond to the pair of Y-direction guide rails 44 and the pair of Y-direction arms 45 on the rear side of the first moving region 22, and in a plan view, the Y-direction guides 50. It is arranged so as to be located directly below the rail 44 and directly below the moving region of the Y-direction arm 45. The Y-direction timing belt 50 has an upper surface portion 50a and a lower surface portion 50b that are hung by a pair of front and rear pulleys 49 and that are separated from each other in the vertical direction. The upper surface portion 50a is disposed directly below the moving region of the Y-direction arm 45, and a connecting fitting 45d fixed to one position of the upper surface portion 50a is fixed to the lower end of the leg plate member 45b of the Y-direction arm 45.

  The Y-direction timing belt 50 is disposed in a box frame 51 disposed on both sides of the pedestal 5 in a plan view. A pair of front and rear pulleys 49 that support the Y-direction timing belt 50 are rotatably supported by the front end portion and the rear end portion of the box frame 51, and the rear left and right pair of pulleys 49 are fixed to the shaft member 52. Yes. A Y-direction drive motor 53 is disposed between the box frames 51 on the rear side of the pedestal 5, and an output shaft of the Y-direction drive motor 53 is interlocked and connected to the shaft member 52 via a timing belt 54 and a pulley 55. ing. The Y-direction drive motor 53 drives the pair of left and right pulleys 49 forward and reverse through the shaft member 52 to rotate the pair of Y-direction timing belts 50 in the forward and reverse directions. The Y-direction arm 45 is driven to move in the Y-direction.

  In order to connect the pair of Y-direction arms 45 to the presser arm 8, a guide arm 46 that is fixed to the front end of the pair of Y-direction arms 45 and extends horizontally in the X direction is provided. The rail member 47 (rail of a linear guide) is attached. A guided member 48 that is engaged with the rail member 47 and guided along the rail member 47 so as to be movable in the X direction is fixed to the rear end portion of the presser arm 8.

Next, the operation and effect of the feeding device F of the pattern sewing machine M will be described.
A control device (not shown) for controlling the pattern sewing machine M and its feeding device F is provided, and the computer of the control device stores sewing data for sewing various patterns such as patterns, patterns and figures. The pattern can be sewn while driving and controlling the pattern sewing machine M and the feeding device F based on the sewing data of the selected pattern.

  When setting the work cloth to be sewn, the work cloth is switched to the release position in which the presser foot 4 is raised via the pressing mechanism 9, and then the work cloth is fed to the rectangular frame portion 3 a of the feed plate 3 and the rectangular frame portion of the presser foot 4. When the cloth presser 4 is lowered by the pressing mechanism 9 and is switched to the cloth holding position after being put in the unfolded state between 4a, the sewing is possible. When the feed plate 3 and the presser foot 4 are moved in the X direction after the start of sewing, the X direction drive motor 27 is driven, the X feed base 23 is moved in the X direction, and the Y feed base 41 and the presser arm 8 are driven. Is driven to move in the X direction, the X feed plate 21 slides in the X direction on the upper surface of the table 2, and the feed plate 3 and the presser foot 4 move integrally with the X feed plate 21 in the X direction.

  In parallel with this, when the feed plate 3 and the presser foot 4 are moved in the Y direction, when the Y direction drive motor 53 is driven, the pair of Y direction arms 45 and the guide arms 46 move in the Y direction. The presser arm 8 is driven to move in the Y direction, and the feed plate 3 and the presser foot 4 are driven to move in the Y direction relative to the table 2 and the X feed plate 21.

  Here, the sliding resistance and feed accuracy when the feed plate 3 and the presser foot 4 are driven to move in the X direction and the Y direction relative to the table 2 will be described. Since the X feed plate 21 in contact with the table 2 moves only in the X direction, the amount of sliding movement is approximately compared to the case where the feed plate 3 moves on the table 2 in both the X direction and the Y direction. Therefore, the wear powder generated from the X feed plate 21 is reduced to about 1/2 of the wear powder when the feed plate 3 is slid directly on the table 2 as in the conventional apparatus.

  Since the feed plate 3 and the presser foot 4 do not move relative to the X feed plate 21 in the X direction, sliding resistance in the X direction does not act on the feed plate 3. Thereby, the feed plate 3 can be made of a synthetic resin material. On the other hand, although sliding resistance is generated when the feed plate 3 moves in the Y direction relative to the X feed plate 21, the feed plate 3 is made of a low-friction synthetic resin material. Since the sliding resistance when the plate 3 moves relative to the X feed plate 21 in the Y direction is much smaller than the sliding resistance between steel plates (including stainless steel plates), it moves at least in the Y direction. The sliding resistance at the time of driving can be made very small, the Y-direction feed mechanism 40 can be reduced in size and weight, and the manufacturing cost can be reduced.

  Moreover, since the wear powder generated by the wear of the feed plate 3 when the feed plate 3 slides on the X feed plate 21 is the wear powder of the synthetic resin material, even if the wear powder adheres to the work cloth, Since there is no possibility of the work cloth becoming dark and dirty like the abrasion powder of a steel plate, improvement in the quality of the sewing product can be expected.

  In the configuration in which the feed plate 3 is slid on the upper surface of the table 2 in the X direction and the Y direction as in the conventional feed device F, since the sliding resistance is large, the feed plate 3 is moved when driven to move in the X direction. The connecting plate portion 3b and the pair of connecting arms 4b of the presser foot 4 are elastically deformed in the X direction so that the feed arms in the X direction are lowered.

  However, in the case of the feeding device F of the present embodiment, the rectangular plate-shaped X feeding plate 21 is firmly connected to the X feeding base 23, and the X feeding plate 21 is not elastically deformed in the X direction. Further, since the X feed plate 21 is not connected to the Y feed base 41, an X direction feed error due to a minute gap between the Y direction rail 41a and the guided member of the Y feed base 41 does not occur. Since the feed plate 3 moves integrally with the X feed plate 21 in the X direction while being placed on the X feed plate 21, the connecting plate portion 3b of the feed plate 3 may be elastically deformed in the X direction. Absent. As a result, the feeding accuracy of the feeding device F in the X direction can be remarkably improved, and the quality of the sewing product can be significantly improved. As described above, since the sliding resistance in the X direction does not act on the feed plate 3, the feed plate 3 can be formed of a synthetic resin material as a low-rigidity member.

  Most of the pair of Y-direction guide rails 44 and the pair of Y-direction arms 45 of the Y-direction feed mechanism 40 are disposed at positions higher than the Y-feed base 41 on the left and right sides of the pedestal 5. Since a pair of Y-direction guide rails 44 and a pair of Y-direction arms 45 can be arranged by effectively using the space above the Y-feed base 41 on both the left and right sides of the pedestal 5, the pattern sewing machine M can be fed. By reducing the overall width (left-right width) of the apparatus F, it is possible to reduce the size of the feeding apparatus F and the pattern sewing machine M.

  Most of the Y-direction guide rail 44 and the Y-direction arm 45 are disposed at positions higher than the Y feed base 41 on both the left and right sides of the columnar portion 5, and the Y-direction arm 45 can be disposed near the Y-direction guide rail 44. Therefore, the structure of the Y-direction arm 45 in the Y-direction feed mechanism 40 can be simplified, the number of parts can be reduced, and the manufacturing cost can be reduced.

  Since the distance between the pair of left and right Y-direction guide rails 44 is much smaller than the left and right width of the first moving region 22 where the X feed base 23 moves, the guides provided at the front ends of the pair of Y-direction guide rails 44 The length of the arm 46 can be shortened to prevent the Y-direction feed accuracy from being lowered due to elastic deformation of the guide arm 46. In addition, the guide arm 46 can be reduced in weight, and the Y-direction feed speed can be increased. Since the guided member 48 provided at the rear end portion of the presser arm 8 is provided at a portion near the center of gravity of the presser arm 8, the force of the Y-direction feeding mechanism 40 can be transmitted to a portion near the center of gravity of the presser arm 8, Y direction feed can be smoothed.

  Since at least a part of the pair of Y-direction guide rails 44 and the pair of Y-direction arms 45 is disposed so as to overlap the first movement region 22 in plan view, the space above the first movement region 22 Since at least the front end portions of the pair of Y-direction guide rails 44 can be arranged by effectively utilizing the above, the size in the front-rear direction of the feeding device F of the pattern sewing machine M can be reduced and the size can be reduced.

  The Y-direction timing belt 50 has an upper surface portion 50a and a lower surface portion 50b that circulate while being separated from each other in the vertical direction, and the upper surface portion 50a is disposed vertically below the moving region of the Y-direction arm 45. In addition, since the structure for connecting the Y-direction timing belt 50 is simplified and no excessive moment or the like acts on the Y-direction timing belt 50, the durability of the Y-direction timing belt 50 can be improved.

Next, an example in which the above embodiment is partially changed will be described.
1) You may comprise the X feed plate 21 of the said Example with synthetic resin materials of low friction, such as nylon and Teflon, for example. In that case, the sliding resistance of the X feed plate 21 with respect to the table 2 can be further reduced.

  2) A pair of left and right Y-direction guide rails 44 and a pair of Y-direction arms 45 can be disposed on the left and right sides of the leg 5 and arm 6 of the sewing machine frame. In this case, the Y-direction timing belt 50 may be disposed near the upper side of the Y-direction guide rail 44 or may be disposed near the lower side of the Y-direction guide rail 44. Then, the shaft member 52 to which the pair of left and right pulleys 49 on the rear side is fixed may be arranged so that the leg column part 5 or the arm part 6 penetrates.

3) In the above embodiment, the first direction is the Y direction, and the second direction is the X direction. However, the first direction may be the X direction and the second direction may be the Y direction.
4) In addition, those skilled in the art can implement the present invention in a form added with various modifications without departing from the spirit of the present invention.

It is a perspective view of a pattern sewing machine and a feeding device according to an embodiment of the present invention. It is a side view of a pattern sewing machine and a feeding device. It is a perspective view of a feeder. It is a principal part perspective view of a feeder. It is a principal part perspective view of a feeder. It is a perspective view of a X feed plate.

M Pattern sewing machine F Feeder 2 Table 3 Feed plate 4 Work clamp 8 Presser arm 20 X direction feed mechanism (second direction feed means)
22 1st movement area 23 X feed stand (2nd feed stand)
40 Y-direction feed mechanism (first direction feed means)
41 Y feed stand (first feed stand)
42 2nd movement area 44 Y direction guide rail (1st direction guide rail)
45 Y direction arm (first direction arm)
46 Guide arm 47 Rail member 48 Guided member 50 Y direction timing belt (first direction timing belt)
50a Upper surface portion 50b Lower surface portion

Claims (2)

A frame-shaped feed plate and presser foot for holding a work cloth on the table, and the feed plate and presser foot are moved and driven in a first direction parallel to the machine main shaft direction and a second direction orthogonal to the first direction, respectively. In a pattern sewing machine feeding device having a first direction feeding means and a second direction feeding means,
The second direction feeding means includes a second feed base that moves in a second direction in a first movement region on the side of the pedestal portion behind the table,
The first direction feeding means is disposed at a position higher than the first feeding table on both the left and right sides of the sewing machine frame and the first feeding table that moves in the first direction in the second movement region on the second feeding table. A pair of first direction guide rails and a pair of guides that are movably guided in the first direction by a pair of first direction guide rails at positions higher than the first feed base on the left and right sides of the sewing machine frame . A first direction arm and a pair of first direction timing belts arranged to correspond to the pair of first direction arms and connected to the pair of first direction arms , respectively.
At least a portion of the pair of first direction guide rails is disposed so as to wrap in a plan view with the first movement region;
The first direction timing belt has an upper surface portion and a lower surface portion that circulate while being spaced apart in the vertical direction, and the upper surface portion is disposed immediately below the moving region of the first direction arm.
Pattern sewing machine feed device characterized by that. A presser arm that is fixed to the first feed base and supports the feed plate and the presser foot;
The first direction feeding means includes a guide arm that is fixed to the front ends of the pair of first direction arms and extends in the second direction, and a first arm that is provided at a rear end portion of the presser arm along the rail member of the guide arm. The pattern sewing machine feeding device according to claim 1 , further comprising a guided member that is movably guided in two directions .