JP5028114B2 - Flat stitch sewing machine - Google Patents

Description

  The present invention relates to a flat sew sewing device that can adjust the edge width accurately and easily and can cope with either a new or ready-made tatami mat.

  For convenience of explanation, the tatami floor shall be fixed on the table with the front or bottom front aligned in parallel with the long side of the rectangular frame in plan view, and the longitudinal direction of the frame, that is, the top or bottom of the tatami floor. The movement in the direction parallel to the front is expressed as “movement along the tatami floor”, and the short direction of the frame, that is, the movement orthogonal to the upper front or lower front of the tatami floor is expressed as “position adjustment orthogonal to the tatami floor”.

  As seen in Patent Document 1 or Patent Document 2, the flat sew sewing device includes a cutting blade and a sewing machine that move along a tatami floor fixed on the table of the frame. This is a tatami mat manufacturing device that cuts the upper front or lower front or the tatami surface and sews the edge fabric to the tatami floor with the sewing machine. The cutting blade is mounted on a cutting blade position adjusting means provided in the sewing machine, and the position of the cutting blade is adjusted perpendicular to the tatami floor according to the cutting blade position adjusting means. The sewing machine is mounted on a sewing machine position adjusting means on a sewing machine moving means provided on the frame, and moves along the tatami floor integrally with the cutting blade according to the sewing machine moving means, and is integrated with the cutting blade according to the sewing machine position adjusting means. The position is adjusted perpendicular to the tatami floor.

  The upper front or lower front of the tatami floor shaped by the flat stitch sewing device is equal to the trajectory of the cutting blade along the tatami floor moving together with the sewing machine, so the distance between the cutting blade and the needle of the sewing machine (tatami mat) The shortest distance between the cutting blade and the needle of the sewing machine in the orthogonal direction on the front or bottom of the floor is the edge width (the width of the edge cloth appearing on the surface of the tatami mat). In addition, since the upper front or lower front of the tatami floor that is fixed on the table is determined according to the ruler, the trajectory of the cutting blade needs to match the ruler or be set in a specific positional relationship. . For this reason, the edge width is adjusted by first adjusting the position of the cutting blade perpendicular to the tatami floor according to the cutting blade position adjusting means, adjusting the distance between the cutting blade and the needle of the sewing machine, and then adjusting the distance between the sewing machine and the sewing machine according to the sewing position adjusting means. The position of the cutting blade was adjusted again by being orthogonal to the tatami floor, and the track of the cutting blade was adjusted to match the ruler or to a specific positional relationship.

JP 2000-084281 JP JP 2002-233680 A

  In the conventional flat sew-on device, when adjusting the edge width, the cutting blade has to be adjusted twice perpendicularly to the tatami floor. At this time, if an error is included in each of the two position adjustments, there is a possibility that the adjustment of the edge width may be inaccurate as a result of the overlap of both errors. Further, for example, in the case of a flat sew sewing device having a configuration in which two sewing machines are provided facing each other, and the front and lower front of the tatami floor are simultaneously cut and shaped, and then the edge fabric is sewn, each of the opposing cutting blades There was an error, and there was a possibility that the width of the tatami floor determined by the cutting blade (the shortest distance in the orthogonal direction before and below the tatami floor) could not be set accurately. In the first place, the adjustment method for adjusting the position of the cutting blade and the sewing machine in order to adjust the edge width is a detour and labor-intensive work.

  In addition, in the case of a new tatami mat, cutting the upper front or lower front or the tatami table and sewing the edge fabric with a sewing machine are all necessary, but in the case of a ready-made tatami mat, cutting the upper front or lower front or the tatami table is necessary. In some cases, the conventional flat sew-on device is difficult to handle a ready-made tatami mat that requires no cutting. The conventional flat sew sewing device has to adjust the position of the cutting blade twice when adjusting the edge width, and the cutting blade is attached to the cutting blade position adjusting means so that it cannot move except in the direction necessary for the position adjustment. It was. For this reason, if it is not necessary to cut the upper front or lower front or the tatami surface, it is necessary to remove the cutting blade itself from the cutting blade position adjusting means. Therefore, in order to develop a flat sew-on device that can adjust the edge width accurately and easily, and can handle both new and ready-made tatami mats, it has been studied.

  The machine developed as a result of the study is equipped with a cutting blade and a sewing machine that move along the tatami floor fixed on the table of the frame. The cutting blade is mounted on a cutting blade moving means provided on the frame, and moves along the tatami floor according to the cutting blade moving means. Mounted on a sewing machine position adjusting means provided in the cutting blade moving means, and moves along the tatami floor integrally with the cutting blade according to the cutting blade moving means, and on the tatami floor separately from the cutting blade according to the sewing machine position adjusting means. This is a flat sew sewing device that is positioned orthogonally.

  According to the present invention, a cutting blade is mounted on a cutting blade moving means that moves along a tatami floor, and the sewing machine is orthogonal to the tatami floor according to the sewing machine position adjusting means with respect to the cutting blade fixed in position to the cutting blade moving means. By adjusting the position, the distance between the cutting blade and the sewing machine needle, that is, the edge width is adjusted. Thus, the adjustment of the edge width according to the present invention requires only a single position adjustment of the sewing machine, so that the occurrence of errors in the edge width can be minimized or prevented, and the adjustment of the edge width does not take time and effort. Simple work is enough. Also, for example, a flat sew device with a structure in which two sewing machines are provided facing each other, and the upper and lower front of the tatami floor are cut and shaped at the same time, and then the edge fabric is sewn, and the cutting blade is provided on the sewing machine. There is no need to adjust the position, and it is only necessary to adjust the position of only the cutting blade perpendicularly to the tatami floor by a separate position adjusting means for the cutting blade, which is advantageous in that the width of the tatami floor can be set accurately.

  In the present invention, it is not necessary to adjust the position of the cutting blade perpendicular to the tatami floor, except when setting the width of the tatami floor, which will be described later. Allowing up and down does not affect edge width adjustment. Therefore, the cutting blade is mounted on the cutting blade moving means via the lifting / lowering means. For example, when the cutting of the tatami floor is unnecessary, the cutting blade can be retracted upward or downward with respect to the tatami floor. Thereby, the flat stitch sewing apparatus of this invention comes to be able to respond | correspond to any of the new-made or ready-made tatami mats. Usually, the cutting blades are provided side by side for the tatami floor and for the tatami surface. In this case, it is preferable to assign separate lifting means to the cutting blade for the tatami floor and the cutting blade for the tatami surface.

  The cutting blade moving means is composed of a main base that moves on a main rail provided on the frame. The main base is moved along the main rail by various conventionally known drive means (rack and pinion drive mechanism, motor drive mechanism, etc.). The cutting blade is attached to a support block provided on the main base. The flat sew sewing device of the present invention is characterized in that the cutting blade is fixed in position. For example, two sewing machines are provided facing each other, and the upper front and lower front of the tatami floor are simultaneously cut and shaped. In the case of a flat sew sewing device configured to sew an edge fabric, it is necessary to adjust the position of at least one cutting blade in accordance with the width of the tatami floor. In this case or when removing the tatami floor, the cutting blade moving means may be configured by providing an adjustment rail on a moving base that moves on the main rail and an adjustment base that moves on the adjusting rail. That is, the main base is divided into a moving base that moves along the tatami floor and an adjustment base that adjusts the position perpendicular to the tatami floor. The cutting blade is adjusted in position according to the size of the tatami floor by moving the adjustment base relative to the moving base, and when cutting the upper front or lower front of the tatami floor, it is perpendicular to the tatami floor. The position is adjusted and can be removed.

The sewing machine position adjusting means is composed of a sub-base that moves on a sub-rail provided on the main base perpendicular to the main rail. The sub-base is position-adjusted along the sub-rail by various conventionally known adjusting means (such as ball screw adjusting means found in Patent Document 1 or Patent Document 2), and the sewing machine is mounted on the sub-base. Here, in the case of the cutting blade moving means composed of the main base described above, the sub rail is provided on the main base. In addition, in order to adjust the position of the cutting blade, when the main base is a cutting blade moving means including a moving base and an adjusting base, the sub rail is provided on the adjusting base. In this case, the position of the sewing machine is adjusted by the sewing machine moving means and the adjustment base of the cutting blade moving means. In the present invention, however, the position of the sewing machine needle is adjusted with respect to the cutting blade relatively fixed in position. Therefore, even if the position of the sewing machine is adjusted by the sewing machine moving means and the adjustment base of the cutting blade moving means, there is no possibility that the edge width is not adjusted.

  Since the flat sew sewing device of the present invention only needs to adjust the position of the sewing machine once in a direction perpendicular to the tatami floor when adjusting the edge width, the occurrence of errors can be suppressed or prevented, and the adjustment of the edge width can be performed accurately. Can be. Further, for example, in the case of a flat stitch sewing apparatus having a configuration in which two sewing machines are provided facing each other and the upper and lower front of the tatami floor are simultaneously cut and shaped, and then the edge fabric is sewn, one of the opposing cutting blades The position of the tatami floor determined by the cutting blade can be accurately set since the position of the other is only required to be adjusted while only the remaining position is adjusted. As described above, the adjustment method for adjusting the position of only the sewing machine for adjusting the edge width is easy, and of course, it does not take time and effort.

  In addition, the flat sew sewing device of the present invention does not have a possibility of changing the edge width adjusted earlier even if the cutting blade is lifted or lowered below the tatami floor by the lifting means and retracted. There is an advantage that ready-made tatami mats, in which either one or both of the upper front or lower front and the cutting of the tatami mat are unnecessary, can be easily handled. Thus, the flat sew sewing device of the present invention has an effect that the edge width can be adjusted accurately and easily, and can cope with both new and ready-made tatami mats.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a left side view showing an example of a flat sew sewing device according to the present invention, FIG. 2 is a right side view showing a flat sew sewing device of this example, and FIG. 3 shows a flat sew sewing device of this example. FIG. 4 is a left side view corresponding to FIG. 1 showing the flat sew device in a state in which the sewing machine 2 is positioned perpendicularly to the tatami floor 4 to have a narrow edge width W2, and FIG. 4 is a plan view corresponding to FIG. 3 showing the flat sew sewing apparatus in a state where the position is adjusted perpendicularly to the width of W2 and FIG. 6 is a book having a configuration in which two sewing machines 2 and 2 are opposed to each other. It is a left view equivalent to FIG. 1 showing another example of the flat stitch sewing apparatus based on the invention. Each figure represents each part as follows for convenience of explanation. First, the flat sew sewing device of this example and another example respectively includes a cutting blade 1 for a tatami floor and a cutting blade for a tatami table, but the illustration of the tatami table is omitted, and the cutting for the tatami floor is performed. Only the blade 1 is provided with a reference numeral. Further, the ruler 32 is raised in the left side view and the right side view, and the ruler 32 is in a tilted state in the plan view.

  As shown in FIGS. 1 to 3, the flat stitch sewing apparatus of the present example is provided with a main rail 12, 12 on a frame 3 having a table 31 on the upper surface, and a main base that moves on the main rail 12, 12. The cutting blade 1 is mounted, and the sewing machine 2 is mounted on a sub-base 24 that moves on a sub-rail 23 provided on the main base. After the tatami floor 4 is placed on the table 31, the tatami floor retainer 33 supported by the frame 3 is lowered through the presser raising / lowering cylinder 331 and pressed down to fix the position. The posture of the tatami floor 4 is determined by setting the ruler 32 attached to the tatami floor presser 33 to be in a tilted state and aligning the upper front or lower front with the ruler 32. Since the extension direction of the main rail 12 is coincident with the longitudinal direction of the ruler 32, the main rail 12 is mounted on the main base that moves along the main rail 12 with respect to the tatami floor 4 that is aligned with the front or lower front. Both the cutting blade 1 and the sewing machine 2 mounted on the sub-base 24 on the main base move along the tatami floor 4. On the other hand, since the secondary base 24 moves along the secondary rail 23 extending orthogonally to the main rail 12, only the sewing machine 2 mounted on the secondary base 24 moves perpendicularly to the tatami floor 4. The position is adjusted.

  The main base on which the cutting blade 1 is mounted includes a moving base 13 that moves on the main rail 12, an adjustment rail 14 provided on the moving base 13, and an adjustment base 15 that moves on the adjustment rail 14. The The driving means of the moving base 13 is a rack and pinion driving mechanism that meshes a rack extending along the main rail 12 and a pinion rotated by the main base moving motor 18 attached to the moving base 13. The adjustment base 15 is used to adjust the position by moving the cutting blade 1 and the sewing machine 2 integrally with the tatami floor 4 when the positional relationship of the cutting blade 1 with respect to the ruler 32 is reset or when removing the habit. It is not moved by adjusting the edge width. Usually, the positional relationship is set so that the track L of the cutting blade matches the ruler 32 (see FIG. 3). The adjusting means of the adjusting base 15 is a ball screw adjusting means comprising a ball screw supported by the moving base 13 and extending in the same direction as the adjusting rail 14, and a block attached to the adjusting base 15 and screwed into the ball screw. In order to carry out the removal, the ball screw can be rotated by the adjusting base moving motor 16.

  The cutting blade 1 is attached to a support block 17 erected on the adjustment base 15 and can be lifted and retracted with respect to the tatami floor 4 by a cutting blade lifting cylinder (not shown) as lifting means built in the support block 17. . The cutting blade 1 of this example for a tatami floor has a circular saw shape, and is rotationally driven by a cutting blade rotating motor 11 that is also supported by a support block 17. The cutting blade 1 and the cutting blade rotating motor 11 are connected by a flexible transmission belt, and do not hinder the raising and lowering of the cutting blade 1. In addition to this, as described above, the reference numeral is omitted, but the cutting blade (rotating blade) for the tatami mat is also attached to the support block 17 like the cutting blade 1, and independently of the cutting blade 1, It can move up and down together with the cutting blade rotation motor for the tatami mat. Thereby, when the cutting of the tatami floor 4 is not necessary, when the cutting of the tatami mat is not necessary, and further when any of the tatami floor 4 and the tatami mat is not necessary, the cutting blade 1 for the tatami floor and the tatami mat are used. One or both of the cutting blades can be selectively retracted upward.

  The sewing machine 2 is mounted on a sub-base 24 that moves perpendicularly to the tatami floor 4 according to the sub-rail 23 and adjusts the position, and, for example, as shown in FIG. The needle 21 is lowered to the position. The needle 21 is driven by a sewing machine rotation motor 22 provided in the sewing machine 2. When adjusting the distance of the needle 21 with respect to the cutting blade 1, that is, the edge width, the sub-base 24 adjusts the position of only the sewing machine 2 orthogonal to the tatami floor 4 while keeping the cutting blade 1 in a fixed position. The adjusting means for the sub base 24 is a ball screw adjusting means comprising a ball screw supported by the adjusting base 15 and extending in the same direction as the sub rail 23, and a block attached to the sewing machine 2 and screwed to the ball screw. In this example, since it is not necessary to adjust the position of only the sewing machine 2 perpendicularly to the tatami floor 4 while moving the cutting blade 1 and the sewing machine 2 along the tatami floor 4, the sewing machine 2 is folded by manually turning the ball screw. After the position adjustment is performed perpendicular to the floor 4, the position of the sewing machine 2 can be fixed to the main base (the adjustment base 15 in this example).

  The adjustment of the edge width will be described. For example, when the distance between the cutting blade 1 and the needle 21 of the sewing machine 2 is changed from a wide edge width W1 to a narrow edge width W2, the flat sew sewing device of the present invention is separated from the cutting blade 1 by a wide edge width W1. If the position of the needle 21 of the sewing machine 2 (see FIG. 1) is adjusted perpendicularly to the tatami floor 4 so that the needle 21 (see FIG. 1) is close to the cutting blade 1, the cutting blade 1 and the needle 21 as shown in FIG. The distance from the needle 21 of the sewing machine 2 can be reduced to a narrow edge width W2. In this case, the cutting blade 1 is fixed in position, and the track L of the cutting blade 1 aligned with the ruler 32 does not move as seen in FIG. That is, according to the present invention, the adjustment of the edge width is completed only by adjusting the position of the sewing machine 2 orthogonal to the tatami floor 4. From now on, after placing the tatami floor 4 on the table 31 and aligning the upper front or lower front with the ruler 32, if the position of the sewing machine 2 is adjusted, it becomes possible to immediately carry out flat sew sewing work with a desired edge width, The labor and labor of the operator can be greatly reduced.

  Since the present invention does not adjust the position of the cutting blade 1 for the adjustment of the edge width, as shown in the above example (see FIGS. 1 to 5), the positional displacement of the cutting blade 1 with respect to the ruler 32 does not occur. There is an advantage that the upper front or the lower front of the floor 4 can be accurately cut. By using this, as shown in FIG. 6, if the flat sew sewing device is configured to have two sewing machines 2 and 2 facing each other, the table 31 is aligned with the ruler 32 at the top or bottom. The upper front and lower front of the tatami floor 4 fixed at the upper position can be cut simultaneously and accurately, and the front and lower front flat stitching operations can be performed. The flat sew sewing device of this other example is capable of simultaneously or sequentially cutting the front and lower front of the tatami floor 4 and the front and lower stab sewing without rotating the tatami floor 4 horizontally and switching the front and lower fronts. In order to be able to carry out, the configuration relating to the cutting blade 1 and the sewing machine 2 in the above example (see FIGS. 1 to 5) is provided symmetrically, but the alignment and position fixing of the tatami floor 4 placed on the table 31 is one place. Therefore, only one tatami floor holder 33 and ruler 32 are provided.

It is a left view showing an example of the flat stitch sewing apparatus based on this invention. It is a right view showing the flat stitch sewing apparatus of this example. It is a top view showing the flat stitch sewing apparatus of this example. FIG. 2 is a left side view corresponding to FIG. 1 showing the flat sew sewing device in a state in which the position of the sewing machine is adjusted to be perpendicular to the tatami floor and the edge width is narrow. FIG. 4 is a plan view corresponding to FIG. 3 showing the flat sew sewing device in a state in which the position of the sewing machine is adjusted perpendicularly to the tatami floor to obtain a narrow edge width. FIG. 5 is a left side view corresponding to FIG. 1 showing another example of a flat sew sewing device according to the present invention having a configuration in which two sewing machines are opposed to each other.

Explanation of symbols

1 Cutting blade
12 Main rail
13 Moving base
14 Adjustment rail
15 Adjustment base
17 Support block 2 sewing machine
21 needles
23 Secondary rail
24 Sub base 3 frames
31 tables
32 Ruler 4 Tatami floor
W1 Wide edge width
W2 Narrow edge width L Cutting blade trajectory

Claims (2)

It has a cutting blade and a sewing machine that moves along the tatami floor fixed on the table of the frame. In the flat stitch sewing device to wear,
The cutting blade is mounted on the main base that moves on the main rail provided in the frame, and moves along the tatami floor according to the main base ,
The sewing machine is mounted on a sub-base that moves on a sub-rail provided on the main base perpendicular to the main rail, moves along the tatami floor with the cutting blade according to the main base , and cuts according to the sub-base. A flat stitch sewing device characterized in that the position is adjusted perpendicular to the tatami floor separately from the blade. The flat stitch sewing apparatus according to claim 1, wherein the cutting blade is mounted on the main base via the lifting means.

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