KR20030087554A - Sewing machine - Google Patents

Abstract

In order to improve the conveyance accuracy, the present invention is configured such that the Y drive member for conveying the fabric conveyance table in the Y direction extends longer in the X direction than the X-direction moving range of the fabric conveyance table, and the X of the Y drive member It was set as the structure which provides the guide mechanism which guides the movement to the Y direction of the said Y drive member in the both ends in the direction. Thereby, the space | interval of the guide mechanism which guides the movement to a Y direction of a Y drive member can be enlarged, and the conveyance precision of a fabric feed table improves.

Description

Sewing machine {SEWING MACHINE}

The present invention relates to a sewing machine for driving the fabric transfer table in the X-Y direction.

In a conventional sewing machine, there are ones having the following configurations. That is, two X-axis fixed rails extending in the X direction are provided in the bed, and an X-axis moving rail guided to be movable in the X direction is provided in the X-axis fixed rail. Two Y-axis fixed rails extending in the Y direction are provided on the X-axis moving rail, and a Y-axis moving rail guided to be movable in the Y direction is provided on the Y-axis fixed rail. The fabric presser is fixed on this Y-axis moving rail, and the Y drive stand is attached to the rear end of this fabric presser. Then, by driving the Y drive table in the Y direction, the fabric pressing table is driven in the Y direction by the guide of the Y-axis moving rail. Such a configuration is disclosed, for example, in Japanese Patent No. 57,7777.

However, in the conventional sewing machine, since two Y-axis fixed rails which guide the Y-axis moving rail are arranged in a limited space in a bed called an X-axis moving rail, the distance between the Y-axis fixed rails becomes narrow. As a result, warpage and vibration of the Y drive stand are transmitted to the Y-axis moving rail, and the Y-axis moving rail is easily rattled, which causes a problem of deterioration of the feeding accuracy.

An object of the present invention is to provide a sewing machine that can improve the transfer accuracy of the fabric transfer table.

The invention of claim 1 includes a bed on which a fabric carriage for holding a processed fabric is disposed, an arm extending in the Y direction above the bed, a Y drive member for driving the fabric carriage in the Y direction, and In the sewing machine having an X drive member for driving the fabric transfer table in the X direction,

The Y drive member is configured to extend longer in the X direction than the X direction moving range of the fabric transfer table,

A guide mechanism for guiding the movement of the Y drive member in the Y direction is provided at both ends in the X direction of the Y drive member.

According to this, when the Y drive member is driven, it itself is guided in the Y direction by the guide mechanism, so that the fabric feed table is also driven in the Y direction. In this case, the Y drive member is configured to extend longer in the X direction than the X direction moving range of the fabric transfer table, and guides the movement in the Y direction of the Y drive member to both ends in the X direction of the Y drive member. Since the guide mechanism to be provided is large, the warpage and vibration of the Y drive member are large between the guide mechanisms, and as a result, rattling of the fabric carriage can be suppressed and the conveyance accuracy of the fabric carriage can be improved.

2. The apparatus of claim 1, wherein the guide mechanism is disposed between each of the guide members provided at both ends of the Y drive member in the X direction, and the bed and the arm, respectively, to guide the guide member in the Y direction. It is comprised including the guide rail extended in each direction.

According to this, the Y drive member can be guided with a simple structure.

Invention of Claim 3 arrange | positions under the said arm of Claim 2, and has a plate of the size substantially the same as the drive range of the XY direction of the said fabric feed table, and the said guide rail is attached to the both ends of the X direction of the plate. It is characterized by that.

According to this, the guide rail can be attached to a large plate, which makes it possible to enlarge between guide rails, and also to secure the size between guide mechanisms.

The invention of claim 4 is characterized in that, in claim 3, the plate is fixed to the lower end of the arm and is a pressing plate for pressing the fabric conveyance downward.

According to this, since the existing press plate provided in the sewing machine is used, a new member is not needed as a plate, and configuration is simplified.

According to a fifth aspect of the invention, in the second aspect, the guide member includes a rolling member in sliding contact with the guide rail.

According to this, the guide member can move less resistance along the guide rail by rolling movement of the rolling member.

1 is an external top view of a sewing machine according to the present embodiment.

2 is a side view of the sewing machine.

3 is a front view of the sewing machine.

<Explanation of symbols for the main parts of the drawings>

10: sewing machine body

12: Bed

14: bridge pillar

16: arm

17: table

18 fabric transfer tray

20: fabric press

22: fabric press bottom plate

24: fabric pressing member

26: attachment member

28: air cylinder

30: load

32: crank pin

34: coupling hole

36: X feed motor

38, 56: rotation axis

40 support member

42: timing belt

44, 64: X drive member

48: Y axis guide member

52: X axis fixed rail

54: Y feed motor

66: Y drive body

66a: side wall

68: Y guide axis

69: guide mechanism

70: guide member

72a: horizontal section

74: axis

76: roller

78: pressure plate

84: spring

88: guide rail

90: screw

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1, the direction in which the arm 16 extends will be described as the Y direction, and the direction orthogonal to the Y direction will be described as the X direction.

As shown in Fig. 2, the sewing machine main body 10 includes a bed 12 extending in the Y direction, a leg pillar 14 extending upward from the rear end of the bed 12, and a leg pillar 14 ) Has an arm 16 extending to the left to face the bed 12. In addition, the tip portion of the bed 12 is covered with a relatively large table 17.

On the upper surface of the bed 12, a fabric transfer table 18 for holding the processed fabric is provided to be capable of driving in the X-Y direction. The fabric transfer table 18 is processed in cooperation with the L-shaped fabric presser 20, the fabric press lower plate 22 attached to the lower end of the fabric presser 20, and the fabric press lower plate 22. And a fabric pressing member 24 for sandwiching the fabric.

The fabric pressing member 24 is attached to the fabric pressing table 20 so as to be movable up and down by the attachment member 26. Moreover, the air cylinder 28 is attached to the side surface of the fabric presser 20, The air cylinder 28 is comprised so that the rod 30 can be driven in both directions. In addition, a crank pin 32 is rotatably attached to the side surface of the fabric pressing table 20 about its axis 33, and one end of the crank pin 32 is a rod 30 of the air cylinder 28. It is rotatably attached to the front end of the. And the other end of the crank pin 32 is comprised so that it may be inserted in the engaging hole 34 (refer FIG. 3) of the attachment member 26. As shown in FIG. Therefore, when the air cylinder 28 enters and exits the rod 30, the fabric pressing member 24 is moved up and down.

Next, a mechanism for driving the fabric transfer table 18 in the X direction will be described. However, this mechanism is briefly described since it is substantially the same as the mechanism of Japanese Patent No. 57,55177. An X feed motor 36 is provided in the bed 12, and the tip of the rotating shaft 38 of the motor 36 is rotatably supported by an inverted c-shaped support member 40 fixed in the bed 12. It is. In addition, a drive pulley (not shown) is fixed to the distal end of the rotating shaft 38, and a timing belt 42 extending in the X direction is interposed between the drive pulley and a driven pulley (not shown).

The X drive member 44 is fixed to the upper side of the timing belt 42, and two Y-axis guide members for guiding the fabric pressing table 20 in the Y direction by holding the fabric pressing table 20 at the upper end of the X driving member 44 ( 48) are fixed respectively. In addition, the auxiliary guide member 50 is fixed below the both ends of the Y-axis guide member 48 in the Y direction, and the auxiliary guide member 50 is fixed to the X-axis fixed rails respectively fixed in the bed 12 ( 52), it is comprised so that it may guide in the X direction with the Y-axis guide member 48. FIG.

Accordingly, the fabric feed table 18 is driven in the X direction through the X drive member 44 and the Y axis guide member 48 by the rotation of the X feed motor 36.

Next, a mechanism for driving the fabric feed table 18 in the Y direction will be described.

The Y feed motor 54 is attached to the side of the leg pillar 14, and the pinion 58 is fixed to the tip of the rotation shaft 56 extending toward the leg pillar 14. And the Y drive shaft 62 in which the rack 60 which engages with the pinion 58 is provided so that the movement to the Y direction may pass through the bridge | pillar part 14. As shown in FIG.

The Y drive member 64 is fixed to the tip end portion of the Y drive shaft 62 on the fabric transfer table 18 side. As shown in FIG. 1, the Y drive member 64 includes an inverted-shaped Y drive body 66 extending in the X direction longer than the X direction moving range of the fabric transfer table 18, and the Y drive body 66. Is composed of a Y guide shaft 68 fixed to the protruding side wall portion 66a. The Y guide shaft 68 penetrates the rear end portion of the fabric pressing table 20 in the X direction, and the Y guide shaft 68 and the fabric pressing table 20 are relatively Y in the X direction. It is made to drive integrally in the direction. Accordingly, the fabric feed table 18 is driven in the Y direction through the Y drive shaft 62 and the Y drive member 64 by the rotation of the Y feed motor 54.

At both ends of the Y drive member 64 in the X direction, guide mechanisms 69 for guiding movement of the Y drive member 64 in the Y direction are provided. This guide mechanism 69 is comprised including the guide member 70 and the guide rail 88. As shown in FIG.

The guide member 70 is screwed to each side wall part 66a of the Y drive main body 66 so that it may protrude upwards. The guide member 70 is a rotating body rotatably attached to an L-shaped guide main body 72 and a shaft 74 protruding from an upper surface of the horizontal portion 72a of the guide main body 72 from the side. It is comprised by the roller 76.

A pressing plate 78 as a plate is fixed to the lower end of the arm 16. The pressing portion 80 attached to the upper end of the fabric pressing table 20 by the pressing plate 78 is always pressed downward to press the fabric. It is configured to prevent the stand 20 from rising from the bed 12.

The to-be-pressed part 80 is comprised from the cylindrical member 82, the spring 84 inserted in the cylindrical member, and the engaging member 86 pressed by the spring 84 by the spring 84. . And the press plate 78 is formed in the magnitude | size similar to the drive range of the X-Y direction of a fabric conveyance stand, and is comprised so that the fabric conveyance stand 18 may engage with the to-be-pressed part 80 in any position.

The guide rails 88 are attached to the lower ends of both end portions of the pressing plate 78 in the X direction by screws 90 so as to extend in the Y direction. The roller 76 of the guide member 70 is in sliding contact with the side surface of the guide rail 88 at all times. That is, what is necessary is just to be comprised so that the screwing position of the guide rail 88 may be fine-adjusted to the X direction with respect to the press plate 78.

According to the present embodiment, when the Y drive member 64 is driven, this itself is guided in the Y direction by the guide mechanism 69, and the fabric feed table 18 is also driven in the Y direction. In this case, the Y drive member 64 is configured to extend longer in the X direction than the X direction moving range of the fabric transfer table 18, and the Y drive member 64 is provided at both ends in the X direction of the Y drive member 64. Since the guide mechanism 69 which guides the movement of the drive member 64 in the Y direction is provided, the warpage and vibration of the Y drive member 64 are large between the guide mechanisms 69, and as a result, the fabric transfer is carried out. Rattle of the stand 18 can be suppressed to improve the feeding accuracy of the fabric transfer table 18.

Further, according to the present embodiment, the guide mechanism 69 is provided between the guide member 70 provided at both ends of the Y drive member 64 in the X direction, respectively, between the bed 12 and the arm 16. It is arranged to include a guide rail 88 is disposed in each extending in the Y direction to guide the guide member 70 in the Y direction, respectively, it is possible to guide the Y drive member 64 in a simple configuration.

In addition, according to the present embodiment, the pressing plate 78 (plate) to which the guide rail 88 is attached is approximately the same size as the driving range of the XY direction of the fabric feed table 18, so that the guide rails 88 This can increase the size, thereby making it easy to secure the size between the guide mechanisms 96.

Moreover, since the guide rail 88 is attached to the existing press plate 78, a new member is not needed as a plate, and configuration is simplified.

The implementation of the present invention may be modified as follows. In the present embodiment, the guide rail 88 is attached to the existing pressing plate 78, but may be attached to a dedicated plate other than the pressing plate, and the sewing machine main body 10 such as a frame and a beam other than the plate. It should be fixed to. In addition, in the present embodiment, the pressing plate 78 is fixed to the lower end of the arm 16, but may be the same as the lifting plate that can lift up and down the arm.

In addition, in this embodiment, although the roller 76 is provided in the guide member side, you may make it provide the roller 76 in the guide rail 88 side.

According to the present invention, the Y drive member for conveying the fabric conveyance table in the Y direction is configured to extend longer in the X direction than the X-direction moving range of the fabric conveyance table, and at both ends of the Y drive member in the X direction, By providing a guide mechanism for guiding the movement of the Y drive member in the Y direction, the distance between the guide mechanisms for guiding the movement of the Y drive member in the Y direction can be increased, and the effect of improving the conveying accuracy of the fabric feed table is improved. have.

Claims (5)

A bed on which a fabric carrier for holding a processed fabric is arranged, an arm extending in the Y direction above the bed, a Y drive member for driving the fabric carrier in the Y direction, and the fabric carrier In a sewing machine having an X drive member for driving in the X direction, The Y drive member is configured to extend longer in the X direction than the X direction moving range of the fabric transfer table, The sewing machine provided with the guide mechanism which guides the movement to the Y direction of the said Y drive member in the both ends in the X direction of this Y drive member. 2. The guide mechanism according to claim 1, wherein the guide mechanism is disposed between the guide members respectively provided at both end portions in the X direction of the Y drive member, and between the bed and the arm to guide the guide members in the Y direction, respectively. Sewing machine characterized in that it comprises a guide rail extending each. 3. A plate according to claim 2, characterized in that it is disposed below the arm and has a plate of substantially the same size as the driving range of the XY direction of the fabric transfer table, and the guide rails are provided at both ends of the plate in the X direction. Sewing machine. 4. The sewing machine according to claim 3, wherein the plate is a pressing plate fixed to the lower end of the arm to press the fabric conveyance downward. The sewing machine according to claim 2, wherein the guide member includes a rolling member in sliding contact with the guide rail.