JPH0665492U - Embroidery sewing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] Avoiding sliding resistance when the cloth to be embroidered is controlled to move in the X direction, prevents pattern displacement of the embroidery pattern, and enables high-speed operation of the embroidery sewing machine. A traverser 3 including a pair of feed rollers 38 arranged at a predetermined interval in a feed direction of an embroidered cloth 60.
An embroidery sewing machine of the type in which the cloth 60 to be embroidered is controlled to move in the X and Y directions under the sewing needle 15 of the sewing machine head 14 by controlling the movement of 0 in the X direction and the rotation control of the feed rollers 38 in the Y direction. , The embroidered cloth 6 positioned between the two feed rollers 38 with respect to the traverser 30.
A cloth support plate 50 is provided so as to move together with the traverser 30 at a position for receiving the lower surface of 0, and the cloth support plate 50 has an opening 52 through which the sewing needle 15 can be inserted.
Is equipped with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a roller traverse type embroidery sewing machine that controls the movement of X- and Y-directions while continuously feeding, for example, a long cloth to be embroidered in a roll shape under the sewing machine head.

[0002]

[Prior art]

 This type of roller traverse type embroidery sewing machine is disclosed in, for example, Japanese Patent Laid-Open No. 3-19953. As is clear from this publication, a traverser is arranged on the sewing machine table so that movement in the X direction can be controlled, and a pair of feed rollers are arranged on this traverser at a predetermined interval in the feeding direction of the embroidered cloth. Has been done. The long embroidery cloth supplied between these feed rollers is controlled under the sewing needle of the sewing machine head by the movement control of the traverser in the X direction and the rotation control of both feed rollers in the Y direction. The movement is controlled in the direction. The embroidered cloth located between the two feed rollers is in contact with the upper surface of the needle plate which is a member immovable with respect to the traverser. Therefore, the embroidered cloth is controlled to move in the X and Y directions relative to the needle plate.

[0003]

[Problems to be solved by the device]

 Among the movements of the embroidered cloth, especially when the traverser moves in the X direction, the embroidered cloth moves at various portions in the feed direction (Y direction) due to the relative sliding resistance between the embroidered cloth and the upper surface of the needle plate. Distortion (deviation) is likely to occur. This causes a pattern shift of the embroidery pattern, and makes it difficult to operate the embroidery sewing machine at high speed. The technical problem of the present invention is that the embroidered cloth positioned between the feed rollers of the traverser is received by the cloth support plate which moves in the X direction together with the traverser, so that the embroidered cloth is held against the needle plate. The purpose is to prevent sliding of the embroidery pattern by avoiding sliding in the X direction, and to enable high-speed operation of the embroidery sewing machine.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the embroidery sewing machine of the present invention is configured as follows. That is, the embroidered cloth is sewn by the movement control in the X direction of a traverser including a pair of feed rollers arranged at a predetermined interval in the feed direction of the embroidered cloth and the rotation control of both feed rollers in the Y direction. In an embroidery sewing machine of a type in which movement is controlled in the X and Y directions under the sewing needle of the head, the traverser is positioned to receive the lower surface of the embroidered cloth located between the feed rollers and the traverser. A cloth supporting plate is provided so as to move together therewith, and the cloth supporting plate has an opening through which the sewing needle can be inserted.

[0005]

[Action]

 According to this structure, when the traverser is controlled to move in the X direction, the embroidered cloth positioned between the feeding rollers is received by the cloth support plate that moves together with the traverser. Move in the X direction as it is. Therefore, the embroidered cloth at this time is not subjected to relative sliding resistance, and distortion (displacement) at each portion in the feeding direction (Y direction) is hardly generated. As a result, it is possible to perform embroidery with less misalignment, and it is also possible to support high-speed operation of the embroidery sewing machine.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. The present embodiment is intended for a multi-head / multi-needle embroidery sewing machine. 3 is a front view of the embroidery sewing machine, FIG. 4 is a plan view thereof, and FIG. 5 is a side view showing an outline of the embroidery sewing state. As is clear from these drawings, a head frame 12 is disposed on the upper portion of the sewing machine table 10 in parallel with the upper surface of the table 10 and in the left-right direction (X direction in FIGS. 3 and 4). There is. The head frame 12 is provided with a plurality of sewing heads 14 along the left-right direction, and each sewing head 14 has three sewing needles 15. Further, on the side of the sewing machine table 10, there are arranged hook bases 16 below the sewing needles 15 of the respective sewing machine heads 14, and each hook base 16 is shown in FIG. 1 which will be described later. As shown in FIG. As is well known, the sewing operation such as the vertical movement of the sewing needle 15 in each sewing machine head 14 and the rotation of the hook 18 of each hook base 16 are synchronized by the same drive source (motor). Driven.

A traverser 30 is arranged between the upper surface of the sewing machine table 10 and the head frame 12. The left and right roller frames 32 and 33, which are the constituent members of the traverser 30, are connected to each other by a pair of front and rear guide bars 34, and both roller frames 32 and 33 are provided on the upper surface of the sewing machine table 10. The rails 11 are mounted so as to be movable in the X direction of FIGS. The roller frame 33 on the right side of FIGS. 3 and 4 receives the driving force in the X direction due to the rotational driving of the ball screw rod 36 screwed into a ball nut (not shown) inside the roller frame 33. Thus, both roller frames 32 and 33 are controlled to move along the rail 11. A pair of feed rollers 38, which is a constituent member of the traverser 30, are arranged at a predetermined interval in the Y direction of FIG. 4 between the roller frames 32 and 33, and both ends of the roller frames 32 and 33 with respect to the roller frames 32 and 33. It is rotatably supported. Both of these feed rollers 38 are synchronously rotated in the same direction by the rotational drive of a reversible motor 44 mounted on the roller frame 33 on the right side of FIGS.

As shown in FIG. 5, on the right side of the embroidery sewing machine, a supply unit 24 for sequentially supplying the cloth 60 to be embroidered, such as a roll-shaped material, to the traverser 30. A collecting section 26 for winding and collecting the embroidered cloth 60 after embroidery in a roll shape is arranged on the left side of the embroidery sewing machine. The embroidered cloth 60 sent from the traverser 30 toward the collecting section 26 passes under the work step 28 on the way.

FIG. 1 shows the traverser 30 in an enlarged sectional view, and FIG. 2 also shows the traverser 30 in a partially cutaway perspective view. As is apparent from these drawings, a tension roller 40 is rotatably provided under the both feed rollers 38 between the roller frames 32 and 33, and both tension rollers 40 are provided. A nipple roller 42 is rotatably provided near the. As shown in FIG. 1, the tension roller 40 and the nipple roller 42 are arranged so that their outer peripheral surfaces are in contact with each other. Incidentally, to both tension rollers 40, rotational forces in opposite directions are given to each of the tension rollers 40 by a drive source (not shown) as shown by an arrow in FIG. As shown in FIG. 1, the embroidered cloth 60 is flipped from the outer periphery of the guide bar 34 through between the tension roller 40 and the nipple roller 42, and further hung on the outer periphery of the feed roller 38. Then, the sheet is turned over, and thereby, it is suspended between the two feed rollers 38. Then, the embroidered cloth 60 is given a tension in the Y direction between the feed rollers 38 by the rotational force in the direction of the arrow shown in FIG. 1 applied to the tension rollers 40.

A cloth support plate 50 is arranged between the feed rollers 38 of the traverser 30, and the bent portions 54 at both ends in the X direction of the cloth support plate 50 are respectively provided with a plurality of bent portions 54. It is fixed to the roller frames 32 and 33 by bolts 56. The cloth support plate 50 is sewn at a position corresponding to the sewing needle 15 in each of the sewing machine heads 14, that is, at a position corresponding to the needle hole 22 of the needle plate 20 located on the upper surface of each hook base 16. An opening 52 is formed to allow insertion of the needle 15. Since the cloth support plate 50 moves in the X direction together with the traverser 30 with respect to each sewing machine head 14 and each hook base 16, the opening 52 is formed continuously in the X direction. However, if the opening 52 is formed to have a length corresponding to the movement amount of the traverser 30 in the X direction at a position corresponding to the sewing needle 15 (needle hole 22 of the needle plate 20) of each sewing machine head 14, it is not always continuous. It does not have to be a hole shape.

During the sewing operation of the embroidery sewing machine, the cloth 60 to be embroidered is sent from the supply section 24 shown in FIG. 5 to the traverser 30, where a predetermined embroidery stitch is sewn. It is sequentially collected by the collecting unit 26. In the traverser 30, the ball screw rod 36 is driven to rotate in the forward and reverse directions by a control signal based on the embroidery data, whereby the roller frames 32 and 33 are moved to the rail 11 of the sewing machine table 10. The traverser 30 itself is controlled to move in the X direction. Similarly, the reversible motor 44 is rotationally driven in the forward and reverse directions by a control signal based on the embroidery data, and thereby the both feed rollers 38 are rotationally controlled in the Y direction. Therefore, the embroidered cloth 60 stretched between the feed rollers 38 of the traverser 30 is controlled to move in the X and Y directions under the sewing needle 15 of each sewing machine head 14, and the embroidered cloth 60 is The design based on the embroidery data is embroidered.

When the traverser 30 is controlled to move in the X direction, the embroidered cloth 60 located between the feed rollers 38 is fixed to the roller frames 32 and 33. The cloth support plate 50 moves in the X direction while being received. Therefore, relative sliding resistance does not occur between the embroidered cloth 60 and the needle plate 20 in the X direction. As a result, the embroidered cloth 60 has less distortion (deviation) at each part in the feeding direction (Y direction), and it is possible to perform embroidery with less pattern deviation.

[0013]

[Effect of device]

 As described above, according to the present invention, by avoiding the sliding resistance when the cloth to be embroidered is controlled to move in the X direction, it is possible to prevent the pattern shift of the embroidery pattern and also to sufficiently support the high speed operation of the embroidery sewing machine.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view showing a traverser.

FIG. 2 is a perspective view of the traverser, which is partially cut away.

FIG. 3 is a front view of the embroidery sewing machine.

FIG. 4 is a plan view of the embroidery sewing machine.

FIG. 5 is a side view showing an outline of an embroidery sewing state in the embroidery sewing machine.

[Explanation of symbols]

 14 Sewing machine head 15 Sewing needle 30 Traverser 38 Feed roller 50 Cloth support plate 52 Opening 60 Embroidered cloth

Claims (1)

[Scope of utility model registration request] 1. A cloth to be embroidered by movement control in a X direction of a traverser including a pair of feed rollers arranged at a predetermined interval in a feeding direction of the cloth to be embroidered and rotation control of both the feed rollers in a Y direction. In an embroidery sewing machine of the type in which movement is controlled in the X and Y directions under the sewing needle of the sewing machine head, a position is provided for receiving the lower surface of the cloth to be embroidered located between the feed rollers with respect to the traverser. An embroidery sewing machine characterized in that a cloth supporting plate is provided so as to move together with the traverser, and the cloth supporting plate is provided with an opening through which the sewing needle can be inserted.