JP2006204823A - Sewing table and sewing frame for multi-head sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a sewing quality in a workpiece by forming an attachment frame 15 attached to a base frame 11 of a sewing frame 10 to be hardly distorted. <P>SOLUTION: The sewing frame 10 for extending and holding an object to be sewn and a driving mechanism 20 which supports the sewing frame 10 to be driven to two directions, i.e., an x-direction being in a juxtaposing direction of a sewing machine head 6 and a y-direction orthogonal to the x-direction, are attached to the sewing table 7 of a multi-head sewing machine. The sewing frame 10 includes: the base frame 11 connected to the driving mechanism 20; and an attachment frame 15 attached to the base frame 11 so as to be adjustable in the y-direction. An attachment frame support mechanism 61 for directly connecting the attachment frame 15 to the sewing table 7 without involving the base frame 11, so as to be make the table 7 slidable in the two x, y-directions and supporting the table is attached between the attachment frame 15 and the sewing table 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sewing machine for a multi-head sewing machine to which a sewing frame for expanding and holding a workpiece is attached.

  Many of the sewing heads of the multi-head sewing machine are relatively long in the x direction, which is the direction in which the sewing machine heads 86 are arranged side by side, like the sewing table 87 of the embodiment shown in FIG. A rectangular table 89 that spreads out in a short manner is provided, and a sewing frame 90 is attached on the table 89 for spreading and holding the workpiece (Patent Document 1). The sewing frame 90 includes a rectangular base frame 91 including a short side frame portion 92 extending in the y direction and a long side frame portion 93 extending in the x direction. The base frame 91 is provided between the sewing frame 87 and the sewing frame 87. The attached drive mechanism 97 is supported on the sewing table 87 so as to be drivable in two directions, the x direction and the y direction. The drive mechanism 97 includes an x-direction drive mechanism 98 that drives the base frame 91 in the x-direction and a y-direction drive mechanism 99 that drives the base frame 91 in the y-direction. The x-direction drive mechanism 98 is attached to one short side frame portion 92a. The y-direction drive mechanism 99 is connected to one long side frame portion 93a. The base frame 91 is placed on the sewing table 87 between the long side frame portion 93b on the side not connected to the y-direction drive mechanism 99 and the sewing table 87, in the two directions separately from the drive mechanism 97. A long side frame support mechanism 100 that is slidably connected and supported is attached.

When the sewing product matching the size of the base frame 91 is stretched and held on the sewing frame 90, the sewing product is directly stretched and held on the base frame 91, while the sewing product smaller than the base frame 91 is used. At the time of stretching / holding, a mounting frame 95, which is a rod-shaped frame, is mounted within the frame of the base frame 91, and the workpiece is stretched / held by the mounting frame 95 and the base frame 91. At this time, both ends of the attachment frame 95 are attached to the inner sides of the short side frame portions 92 at right angles so as to be parallel to the long side frame portion 93 in the frame of the base frame 91. In this conventional example, the work to be sewn is stretched and held between the long side frame portion 93 b on the side of the sewing frame 90 not connected to the y-direction drive mechanism 99 and the attachment frame 95, and A plurality of fixing plates 96 for securing the connection strength between the base frame 91 and the attachment frame 95 are attached between the long side frame portion 93 a on the connected side and the attachment frame 95.
JP 2002-212872 A

  The base frame 91 is stable because it is supported on the sewing table 87 by the x-direction drive mechanism 98, the y-direction drive mechanism 99, and the long-side frame support mechanism 100, but the mounting frame 95 is directly attached thereto. However, the stability is lower than that of the base frame 91 because the base frame 91 is indirectly supported via the base frame 91 connected by both end portions and a plurality of fixing plates 96. For this reason, when driven, the mounting frame 95 is likely to be distorted, which may degrade the quality of sewing of the sewing product.

  Then, it aims at improving the quality of sewing up of a to-be-sewn material by changing the support means which supports a mounting frame to a sewing stand, and making this mounting frame hard to distort.

  In order to achieve the above object, a sewing machine for a multi-head sewing machine according to the present invention includes a sewing frame for spreading and holding a workpiece, and the sewing frame orthogonal to the x direction, which is the direction in which the sewing machine heads are juxtaposed. In a sewing machine for a multi-head sewing machine to which a driving mechanism that supports driving in two directions with respect to the y direction is attached, the sewing frame has a base frame connected to the driving mechanism, and an attachment position on the base frame. a mounting frame that is adjustable in the y direction, and the mounting frame is connected to the sewing table directly between the mounting frame and the sewing table in the two directions without the base frame. A mounting frame support mechanism that is slidably connected and supported is attached.

  Further, the sewing frame of the multi-head sewing machine of the present invention is driven by the drive mechanism attached to the sewing head of the multi-head sewing machine in two directions, that is, the x direction which is the parallel direction of the sewing heads and the y direction perpendicular to the x direction. A sewing frame of a multi-head sewing machine that stretches and holds an object to be sewn supported, and a base frame that is connected to the drive mechanism, and an attachment that is attached to the base frame so that the mounting position can be adjusted in the y direction. A mounting frame that is connected between the mounting frame and the sewing table so as to be slidable in the two directions directly to the sewing table without passing through the base frame. A support mechanism is attached.

  The mounting frame support mechanism is not particularly limited, but a driven rail provided in the sewing table and extending in the y direction, a supported portion provided in the mounting frame and extending in the x direction, and the driven rail. And a sewing frame support member that is slidably mounted in the y direction and simultaneously supports the supported portion in a slidable manner in the x direction.

Although the form of the said sewing frame is not specifically limited, The following (a) (b) forms are illustrated.
(A) The base frame is an annular shape, the attachment frame is a non-annular frame, and the sewing frame is a bicyclic frame formed by attaching the attachment frame within the frame of the base frame. .
(A) The base frame and the attachment frame are non-annular frames, and the sewing frame is a single annular frame formed by attaching the attachment frame to the base frame.

  According to the present invention, the attachment frame supporting member for directly connecting and supporting the attachment frame to the sewing table without the base frame portion is attached between the attachment frame and the sewing table. Stable and less distorted. Therefore, it is possible to improve the quality of sewing up the sewing object.

  A sewing head 7 for a multi-head sewing machine according to the present invention includes a sewing frame 10 for stretching and holding a workpiece, and an x direction that is a direction in which the sewing heads 6 are arranged side by side and a y direction that is orthogonal to the x direction. And a drive mechanism 20 that supports the drive in two directions. The sewing frame 10 includes a base frame 11 connected to the drive mechanism 20 and an attachment frame 15 attached to the base frame 11 so that the attachment position can be adjusted in the y direction. And, between the mounting frame 15 and the sewing table 7, the mounting frame 15 is connected to and supported by the sewing table 7 so as to be slidable directly in the two directions of the x and y directions without the base frame 11. A frame support mechanism 61 is attached. The attachment frame support mechanism 61 includes a driven rail 52 provided in the sewing table 7 extending in the y direction, a supported portion 64 provided in the attachment frame 15 extending in the x direction, and the driven rail 52 in the y direction. The sewing frame support member 65 is slidably attached and simultaneously supports the supported portion 64 so as to be slidable in the x direction.

  The sewing head 7 for the multi-head sewing machine according to the first embodiment shown in FIGS. 1 to 3 of the present invention is relatively long in the x direction, which is the parallel direction of the sewing heads 6 of the multi-head sewing machine, and the y direction perpendicular to the x direction. And a rectangular table 9 that spreads relatively short, and a frame 8 that supports the table 9 from below. The sewing table 7 has a sewing frame 10 for expanding and holding the sewing object, and a drive for supporting the sewing frame 10 on the table 9 so as to be drivable in two directions, the x direction and the y direction. In addition to the mechanism 20 and the drive mechanism 20, a support mechanism 50 that supports the sewing frame 10 on the sewing table 7 so as to be slidable in the two directions is attached.

  The sewing frame 10 includes a base frame 11 that is a rectangular frame including a short side frame portion 12 and a long side frame portion 13, and an attachment frame 15 that is attached to the base frame 11 so that the attachment position can be adjusted in the y direction. Has been. One short side frame portion 12 a and one long side frame portion 13 a of the base frame 11 are connected to the x-direction drive mechanism 21 and the y-direction drive mechanism 31 of the drive mechanism 20, respectively. The long side frame portion 13 b on the side not connected to the y-direction drive mechanism 31 is connected to the long side frame portion support mechanism 51 of the support mechanism 50.

  The attachment frame 15 is attached to the frame of the base frame 11 when the size of the sewing product that is stretched and held on the sewing frame 10 is too small with respect to the size of the base frame 11, and the attachment frame 15 is connected to the long side frame portion 13a. It is intended to stretch and hold the article to be sewn between, and has a bar shape extending linearly. Both ends of the mounting frame 15 are mounted at right angles inside the short side frame parts 12 in the frame of the base frame 11 so as to be parallel to the long side frame part 13. And the attachment position can be shifted in the y direction so that the size of the portion for stretching and holding the sewing product can be adjusted. The attachment frame 15 is connected to an attachment frame support mechanism 61 of the support mechanism 50.

  The area surrounded by the long side frame portion 13a on the sewing frame 10 side on the y-direction drive mechanism 31 side, the attachment frame 15, and the both short side frame portions 12 is a sewing area S for expanding and holding the workpiece. On the other hand, the area surrounded by the opposite long side frame portion 13b, the attachment frame 15 and both short side frame portions 12 is a dead area D which is not used when the article to be sewn is stretched and held. Yes.

  The drive mechanism 20 is capable of driving the sewing frame 10 in the x direction and supporting the sewing frame 10 so as to be slidable in the y direction, and the y direction supporting the sewing frame 10 capable of driving in the y direction and being slidable in the x direction. The drive mechanism 31 is comprised. Since the x-direction drive mechanism 21 and the y-direction drive mechanism 31 are substantially the same with the x-direction and y-direction interchanged, only the y-direction drive mechanism 31 will be described below.

  The y-direction drive mechanism 31 includes a drive rail 32 installed in the sewing table 7 and extending in the y direction, a drive frame 33 connected to the long side frame portion 13a of the base frame 11, and the drive frame 33 as a drive rail. A drive frame support member 35 supported by 32 and a conveyor 39 for driving the drive frame support member 35 in the y direction that is the rail direction of the drive rail 32 are configured.

  The driving rails 32 are convex rails protruding upward, and a plurality of driving rails 32 are arranged side by side on the sewing table 7 in the x direction. The drive frame 33 is a plurality of rod-shaped frames extending in the x direction, and supported rails 34 are provided on the lower surface of the drive frame 33 so as to be slidably supported by the drive frame support member 35 in the x direction. The supported rail 34 is a convex rail that protrudes downward, and is formed in the x direction, which is the length direction of the drive frame 33.

  The drive frame support member 35 is a support for supporting a slide base 36 serving as a substrate, a moving roller 37 for sliding on the drive rail 32 in the y direction, and a supported rail 34 slidable in the x direction. And a roller 38. Two moving rollers 37 exist so as to sandwich the drive rail 32 from both sides, and are attached to two moving shafts 36a protruding downward from the lower surface of the slide base 36 via bearings. On the other hand, two supporting rollers 38 exist so as to sandwich the supported rail 34 of the drive frame 33 from both sides, and two supporting shafts 36b projecting upward from the upper surface of the slide base 36 are respectively provided with bearings. Attached.

  The conveyor 39 is connected to a driving motor 41 and can be driven to rotate, a driving pulley 40 that rotates following the driving pulley, and a driving pulley that is laid between the pulleys 40 and 42. And a belt 43. The driving pulley 40 and the driven pulley 42 are installed in installation holes 9 a and 9 b provided near both ends of the driving rail 32 in the length direction of the table 9, and the respective upper ends thereof protrude above the upper surface of the table 9. The lower end protrudes below the lower surface of the table 9. A drive frame support member 35 is connected to the drive belt 43.

  The x-direction drive mechanism 21 is different from the y-direction drive mechanism 31 in that the drive frame 23 included in the mechanism is a frame that is connected to one instead of a plurality of the frames. The same applies to the y direction. Therefore, like the y-direction drive mechanism 31, the drive rail 22, the drive frame 23, the drive frame support member 25, and the conveyor 29 are configured.

  The support mechanism 50 sews the attachment frame 15 in the same manner as the long-side frame support mechanism 51 that connects and supports the long-side frame 13b to the sewing table 7 so as to be slidable in two directions, the x-direction and the y-direction. An attachment frame support mechanism 61 that is connected to and supported by the base 7 is configured. Since the long side frame support mechanism 51 and the attachment frame support mechanism 61 are substantially the same, only the attachment frame support mechanism 61 will be described below.

  The mounting frame support mechanism 61 includes a driven rail 52 installed in the sewing table 7 extending in the y direction, supported portions 64 provided at a plurality of locations of the mounting frame 15, and sliding on the driven rail 52 in the y direction. The sewing frame support member 65 is slidably supported at the same time as the supported portion 64 is slidable in the x direction. The driven rail 52 is also a component of the long side frame support mechanism 51, and both mechanisms 51 and 61 also serve as the driven rail 52.

  The follower rails 52 are convex rails protruding upward, and a plurality of follower rails 52 are arranged in parallel on the sewing table 7 in the x direction. The supported portion 64 is a groove for supporting the sewing frame support member 65 so as to be slidable in the x direction, and is recessed upward on the lower surface of the attachment frame 15. The supported portion 64 is elongated in the x direction, which is the length direction of the mounting frame 15.

  The sewing frame support member 65 is a support for supporting a slide base 66 serving as a substrate, a moving roller 67 for sliding the driven rail 52 in the y direction, and a supported portion 64 so as to be slidable in the x direction. And a roller 68. Two moving rollers 67 exist so as to sandwich the driven rail 52 from both sides, and are respectively attached to two moving shafts 66a protruding downward from the lower surface of the slide base 66 via bearings. On the other hand, the supporting roller 68 exists as a single unit so as to be fitted into the supported portion 64, and is attached to one supporting shaft 66 b protruding upward from the upper surface of the slide base 66 via a bearing.

  The long side frame portion support mechanism 51 is different from the attachment frame support mechanism 61 in that the supported portion 54 is provided not on the attachment frame 15 but on the lower surface of the long side frame portion 13b. It is the same. Therefore, similarly, it includes the driven rail 52 (also used as the attachment frame support mechanism 61), the supported portion 54, and the sewing frame support member 55.

  The function of the sewing frame 10 shown above will be described below. When a sewing product that matches the size of the sewing frame 10 is stretched and held, the sewing product is directly stretched and held on the base frame 11 without attaching the attachment frame 15. On the other hand, when the article to be sewn smaller than the base frame 11 is stretched and held, the attachment frame 15 is attached to the inside of the base frame 11, and the sewing is performed by the attachment frame 15 and the long side frame portion 13 a of the base frame 11. Spread and hold things. At this time, the attachment frame 15 is connected to the attachment frame support mechanism 61. Further, when a sewing product having a size different from that of the above-described sewing product is stretched and held, the attachment frame 15 is removed from the base frame 11 and the attachment frame 15 is attached to the sewing frame support member 65. Then, the attachment position with respect to the base frame 11 is shifted in the y direction, and the size of the sewing area S that stretches and holds the workpiece is adjusted.

  According to the first embodiment, since the attachment frame support mechanism 61 is attached between the attachment frame 15 and the sewing table 7, the attachment frame 15 is directly connected to the sewing table 7 without the base frame 11.・ Supported, stable and not easily distorted. As a result, the quality of sewing of the workpiece is improved. Further, in the first embodiment, the fixing plate 96 used in the conventional example is not necessary, so that the number of parts is small and the cost is reduced.

  Example 2 shown in FIG. 4 is substantially the same as Example 1, except that an L-shaped base frame 71 and a rod-like shape are provided on the table 9 of the sewing table 7 instead of the sewing frame 10 of Example 1. The difference is that a rectangular sewing frame 70 composed of an attachment frame 75 and an auxiliary frame 77 is attached.

  The base frame 71 includes a short side frame portion 72 that forms one short side of the sewing frame 70 and a long side frame portion 73 that forms one long side. The short side frame portion 72 is formed in a shape bent at a right angle from one end of the long side frame portion 73, and each of the short side frame portion 72 and the long side frame portion 73 is x as in the first embodiment. The direction drive mechanism 21 and the y direction drive mechanism 31 are connected.

  The attachment frame 75 is used to stretch and hold the sewing product between the long side frame portion 73 and one end thereof is perpendicular to the short side frame portion 72 so as to be parallel to the long side frame portion 73. Is attached. And the attachment position can be shifted in the y direction so that the size of the portion for stretching and holding the sewing product can be adjusted. An attachment frame support mechanism 61 is connected to the lower surface of the attachment frame 75 as in the first embodiment.

  The auxiliary frame 77 is a frame for connecting one end of the base frame 71 on the long side frame portion 73 side to the end on the side not attached to the short side frame portion 72 of the attachment frame 75, and the short side frame portion. One end of the base frame 71 is attached to a side of one end of the base frame 71 on the long side frame portion 73 side so as to be perpendicular to the long side frame portion 73. The other end of the attachment frame 75 is attached to the side portion of the other end of the auxiliary frame 77 at a right angle. The auxiliary frame 77 is provided with specifications of a plurality of lengths so that the tip portion on the side connected to the mounting frame 75 does not protrude toward the outside of the annular sewing frame 70 to be formed. Depending on the mounting position of the frame 75, it can be replaced with an appropriate length. Therefore, the sewing frame 70 formed by the base frame 71, the attachment frame 75, and the auxiliary frame 77 has only a short side portion on the x-direction drive mechanism 21 side formed by the short side frame portion 72 of the base frame 71. It is a rectangular frame protruding toward the outside.

  According to the second embodiment, the dead area D formed in the first embodiment is not formed in the sewing frame 70, and space saving is achieved. At the same time, the structure of the sewing frame is simplified and lightened.

  The present invention is not limited to the above-described embodiment, and can be appropriately modified and embodied without departing from the spirit of the invention. For example, in the case of Embodiment 1, the sewing frame support member 65 may be A suspension mechanism that prevents the attachment frame 15 from floating upward may be attached.

It is a whole perspective view which shows the sewing stand of Example 1 of this invention. It is a fragmentary perspective view which shows the sewing stand of the Example. It is a fragmentary sectional view which shows the sewing stand of the Example. FIG. 5 is an overall perspective view showing a sewing table of Example 2. It is a whole perspective view which shows the sewing stand of a prior art example.

Explanation of symbols

6 Sewing head 7 Sewing table 10 Sewing frame 11 Base frame 15 Mounting frame 20 Drive mechanism 52 Drive rail 61 Mounting frame support mechanism 64 Supported portion 65 Sewing frame support member 70 Sewing frame 71 Base frame 75 Mounting frame x x direction y y direction

Claims (3)

A sewing frame that stretches and holds the work to be sewn and a drive mechanism that supports the sewing frame so as to be drivable in two directions, the x direction that is the direction in which the sewing heads are arranged side by side and the y direction that is orthogonal to the x direction, are attached. In the sewing machine of the multi-head sewing machine
The sewing frame includes a base frame connected to the drive mechanism, and an attachment frame attached to the base frame so that an attachment position can be adjusted in the y direction.
An attachment frame support mechanism for connecting and supporting the attachment frame to the sewing table so as to be slidable directly in the two directions without the base frame is attached between the attachment frame and the sewing table. A sewing machine for multi-head sewing machines. The drive mechanism attached to the sewing head of the multi-head sewing machine is used to stretch and sew a workpiece that is supported so that it can be driven in two directions: the x direction, which is the direction in which the sewing heads are juxtaposed, and the y direction perpendicular to the x direction In the sewing frame of the multi-head sewing machine to hold,
A base frame connected to the drive mechanism, and a mounting frame attached to the base frame so that the mounting position can be adjusted in the y direction.
An attachment frame support mechanism for connecting and supporting the attachment frame to the sewing table so as to be slidable directly in the two directions without the base frame is attached between the attachment frame and the sewing table. Multi-head sewing frame featuring   The attachment frame support mechanism includes a driven rail provided in the sewing table and extending in the y direction, a supported portion provided in the attachment frame extending in the x direction, and the driven rail in the y direction. The sewing machine for a multi-head sewing machine or a sewing frame for a multi-head sewing machine according to claim 1 or 2, comprising a sewing frame support member that is slidably attached and simultaneously supports the supported portion so as to be slidable in the x direction.

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