JP5493162B2 - Tatami flat stitch sewing machine - Google Patents

Description

  The present invention relates to a tatami flat stitch sewing apparatus. More specifically, when performing flat stab sewing on a tatami floor, it is possible to easily change the cutting angle when changing the width of the tatami floor and change the rim edge width. The present invention relates to a tatami flat stitch sewing apparatus.

  2. Description of the Related Art Conventionally, sewing machines that perform tatami mat sewing are known. For example, as shown in Patent Document 1, in a tatami stitching machine in which a flat stitch sewing machine and a reverse stitching machine are placed on the same base, means for retracting the tatami floor cutting blade from the tatami floor cutting position during the reverse stitching process, There is known a tatami-stitching device comprising drive transmission means for swinging a floor cutting blade and means for releasing the connection of the drive transmission means. And the cutting of the tatami floor in the flat stab process is normally performed at the cutting angle of about 4 degrees.

  In addition, as in Patent Document 2 and Patent Document 3 shown below, there are known controls and mechanisms for changing the edge width of a tatami edge when flat stitching is performed.

Japanese Patent No. 4000431 Japanese Patent No. 3396809 Japanese Patent No. 3396810

  In the conventional flat stitch sewing apparatus, as disclosed in Patent Document 1, the cutting angle of the cutting blade is constant, and is not configured to be easily changed. However, due to the westernization and barrier-free construction of houses, the tatami mats used in houses are usually 50-60 mm, but have changed to thin tatami mats of about 15-30 mm. The demand for non-tatami mats is also increasing. And although the subject has been solved also about the change of the edge width of a tatami rim, etc., it was in the situation where the subject still remains about the angle change of the cutting blade in flat stab sewing.

Also, as a tatami mat manufacturer, products are diversified, and tatami mats to be installed on flooring are also manufactured. 90 degrees for tatami mats (the cutting blade is cut at right angles without tilting), about 86 degrees for tatami mats of normal thickness (cutting angle with the cutting blade tilted about 4 degrees), 50-60 mm for edgeless tatami mats In the case of a thick tatami mat, about 82 degrees (the cutting angle when the cutting blade is tilted by about 8 degrees), and in the case of a thin tatami mat with no edge, about 77 degrees (the cutting blade is tilted by about 13 degrees) There is a demand to change the cutting angle of the tatami floor in the flat piercing process in consideration of the finish depending on the tatami to be manufactured and the tatami to be manufactured, and an apparatus capable of changing the cutting angle is desired.

In order to solve the above-described problems, a first aspect of the present invention provides a flat sew device for flat sew a tatami mat and tatami rim paper on a tatami floor, and a driving source for driving the cutting blade and the cutting blade. An installed angle adjustment base and a guide member that supports the angle adjustment base are provided, and the angle adjustment base is a turning center line that passes through a point that matches the upper surface position of the tatami that is cut with a cutting blade with respect to the guide member . The turning center line is cut by a cutting blade installed on the angle adjustment base by positioning the turning center line perpendicular to the width direction of the tatami where the flat stitch sewing device moves and moves. The angle adjustment can be performed with the upper surface cutting position of the tatami mat being fixed.

According to a second aspect of the present invention, the angle adjusting base includes a cutting blade and a driving source that drives the cutting blade, and a guide member that supports the angle adjusting base. The angle adjusting base includes a plurality of guide pins. In addition, two base plates are provided in parallel with the plurality of guide pins protruding in a direction in which the plurality of guide pins are inserted into the guide members, and a plurality of arc shapes in which the guide pins are fitted to the guide members that support the angle adjustment base. the elongated hole is provided, the plurality of arc-shaped long hole provided in each of the guide members share a turning center of one point through the cutting top surface of the mat, respectively, relative to the guide member angle adjustment based The cutting angle of the cutting blade can be adjusted by turning the position about a straight line connecting the turning centers, and the cutting position of the cutting blade is coincident with the straight line connecting the turning centers. That.

  According to a third aspect of the present invention, the angle adjustment base includes an angle adjustment drive source, and the angle adjustment base is automatically adjusted by numerically controlling the drive source.

According to a fourth aspect of the present invention, there is provided a means for locking the angle adjusting base so as not to pivot with respect to the guide member .

According to the present invention, the angle adjusting base is provided so as to be able to turn at a turning center line passing through a point corresponding to the upper surface position of the tatami to be cut by the cutting blade with respect to the guide member , so that the upper surface of the tatami to be cut is cut. The angle of the cutting blade can be adjusted without changing the position, and the tatami can be manufactured by adjusting to a desired cutting angle according to the tatami to be manufactured.

It is a front view explaining the outline | summary of this invention of a flat stitch sewing apparatus. It is the side view of FIG. 1 seen from the cutting blade side. It is a top view explaining the cutting blade etc. which are provided in the angle adjustment base of FIG. It is a side view explaining the guide plate of the state seen from the sewing needle side. It is the side view illustrated from the direction similar to FIG. 2 at the time of setting the inclination of a cutting blade to 13 degree | times.

  A tatami flat stitch sewing apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a front view of a flat sew sewing device, and FIG. 2 is a side view of FIG. 1 viewed from the cutting blade side. FIG. 3 is a plan view of the angle adjustment base portion in FIG. 2, but the motor 10 is omitted. FIG. 4 is a diagram illustrating the configuration of the guide plate portion as viewed from the sewing needle side. However, the illustrated configuration is centered on the portion related to the gist of the present invention, and a description of a conventionally known mechanism for holding a tatami edge or a sheet below the tatami edge is omitted.

  Reference numeral 1 denotes a flat stitch sewing machine, which is provided in such a configuration that a control motor (not shown) can be moved on the rails 3 and 3 in a direction perpendicular to the paper surface of FIG. ing. Reference numeral 2 denotes a sewing needle for sewing the tatami mat, the tatami mat and the margin paper to the tatami floor. Reference numeral 4 denotes an octagonal blade for cutting the tatami surface when flat stitching. A cutting blade 5 for cutting the tatami floor is attached to the rotary shaft 6 and is rotatably provided on the slide base 8 by a bearing member.

  A pulley 7 is provided at the end of the rotating shaft 6, and a cutting blade 5 is rotated by driving the motor 10 by disposing a belt (not shown) between the pulley 9 provided on the shaft of the motor 10. It is the composition which becomes. The motor 10 is also attached to the slide base 8.

  The slide base 8 is configured to be slid in the left-right direction in FIG. 2 by four cylinders 11 attached to the angle adjusting base 13 and four slide units 8a fitted to the rails 12 and 12. 2 shows a state in which the rod of the cylinder 11 is protruded and the slide base 8 is moved to the right side, and the state of FIG. 2 is the position of the slide base 8 where the tatami floor is cut by the cutting blade 5, and the rod of the cylinder 11 is returned. When the slide base 8 is positioned on the left side, the cutting blade 5 is retracted from the cutting position to perform a work such as changing the tatami mat without cutting the tatami floor.

  The angle adjustment base 13 includes a base plate 13a provided with three guide pins 14a, 14b, and 14c, and a base plate 13b provided with three guide pins 15a, 15b, and 15c. The base plate 13a and the base plate are provided. 13b is parallel. In FIGS. 2 and 4, the base plate 13a and the base plate 13b are externally shown by dotted lines. Further, a turning lock cylinder 16 is also attached to the base plate 13b. The rod 16a of the turning lock cylinder 16 is inserted through a hole provided in the base plate 13b, and a locking plate 16b is provided at the tip of the rod 16a. Is provided.

  And metal fittings 26 and 26 (refer to Drawing 1) are provided between board members 13c and 13c (refer to Drawing 2 or 4) provided between base board 13a and base board 13b of angle adjustment base 13, and this metal fitting 26, A turning adjustment nut 25 is provided so as to be turnable by pins 27 and 27 attached to 26 respectively.

  The guide pins 14a, 14b, and 14c are respectively inserted into arc-shaped elongated holes 17a, 17b, and 17c provided in the guide plate 1b attached to the cutting blade positioning base plate 1a positioned below the angle adjusting base 13. The guide pins 15a, 15b and 15c are respectively inserted into arc-shaped elongated holes 18a, 18b and 18c provided in the guide plate 1c attached to the cutting blade positioning base plate 1a in parallel with the guide plate 1b. ing. Further, the rod 16a of the turning lock cylinder 16 is fitted into an arc-shaped elongated hole 18d provided in the guide plate 1c in such a manner that the rod 16a can advance and retreat.

  The centers of the arcs of the three arc-shaped elongated holes 17a, 17b, and 17c provided in the guide plate 1b all share a single turning center P that passes through the cut surface. The centers of the arcs of the four arc-shaped elongated holes 18a, 18b, 18c, 18d provided in the guide plate 1c all share a single turning center Q that passes through the cut surface.

  In the above description, a guide pin is provided on the angle adjustment base 13 side and a long hole is provided on the guide plate 1b or guide plate 1c side. However, a long hole is provided on the angle adjustment base 13 side, and the guide plate 1b or guide plate 1c is provided. It is good also as a structure which provides a guide pin in the side.

  A drive source for adjusting the angle of the angle adjustment base 13 is an angle adjustment motor 19. A screw member 21 is attached to a shaft joint 20 provided on the shaft 19 a and a hole provided in the cutting blade positioning base plate 1 a is inserted. Thus, the screw member 21 is arranged facing upward, and the screw member 21 is screwed into the turning adjustment nut 25.

  The angle adjusting motor 19 is fixed to a turning base 24 having a turning center parallel to a straight line connecting the points P and Q by the metal fittings 22 and 22 and the pins 23 and 23 attached to the cutting blade positioning base plate 1a. The angle adjusting motor 19 is attached to the lower side of the cutting blade positioning base plate 1a so as to be able to turn on the turning base 24.

  The cutting blade positioning base plate 1 a is provided with slide moving means 28, 28, and rails 29, 29 that respectively fit the slide moving means 28, 28 are provided on the lower frame 30 of the flat sew sewing machine 1. It has been. The cutting blade positioning base plate 1a is positioned and controlled in the left-right direction in FIG. Then, when the cutting blade positioning base plate 1a is at the origin position, the reference position for cutting the tatami of the cutting blade 5 is positioned so as to coincide with the straight line connecting the points P and Q.

  Next, the operation of adjusting the angle of the cutting blade 5 will be described. The state shown in FIG. 2 is a state where the cutting blade 5 is at a cutting angle of 90 degrees and the cutting blade 5 is not inclined, and the state shown in FIG. 5 is a state where the cutting blade 5 is inclined 13 degrees.

  First, the rod 16a of the turning lock cylinder 16 is extended to separate the lock plate 16b from the guide plate 1c. As a result, the guide plate 1c sandwiched between the turning lock cylinder 16 and the locking plate 16b and the base plate 13b of the angle adjustment base 13 are released, and the base plate that has been locked so as not to turn is locked. 13b can be turned.

  Next, the angle adjusting motor 19 is rotated to rotate the screw member 21. Since the turning adjustment nut 25 is lowered by the rotation of the screw member 21, the angle adjustment base 13 provided with the turning nut 25 is lowered, but the guide pins 14a, 14b, 14c provided on the angle adjustment base 13 are Three circular arc holes 17a, 17b, 17c provided in the guide plate 1b are inserted into the guide plate 1b, and the guide pins 15a, 15b, 15c and the rod 16a of the turning lock cylinder 16 are provided in the guide plate 1c. Since the guide pins and the rods are respectively inserted into the long holes 18a, 18b, 18c and the long holes 18d, the angle adjustment base 13 is lowered along the points P and Q. It will be in a state of turning around a straight line passing through. As a result, the cutting blade 5 turns about a straight line passing through the points P and Q, and the angle can be adjusted in a state where the finished size after cutting does not change even if the angle of the cutting blade 5 is changed. It is.

  At this time, as the angle adjusting base 13 is turned, the turning nut 25 is also lowered with the rotation of the screw member 21 while turning with respect to the pins 27 and 27. At this time, since the turning base 24 with the angle adjusting motor 19 attached thereto is turned by the force applied to the screw member 21 from the turning nut 25, the angle adjusting motor 19 is gradually vertical from the state of FIG. 2 to the state of FIG. Turned in the direction.

  The turning angle adjustment is performed by counting and calculating pulses generated by the rotation of the rotation shaft 19a of the angle adjusting motor 19, and inputting the tilt angle to an operation panel (not shown) for positioning by numerical control. Specifically, the control device controls the angle adjustment base 13 by inputting a desired angle such as “1, 2, 3,... A series of operations for adjusting the angle and bringing it into the locked state again is controlled. In addition, since the angle can be adjusted steplessly in this configuration, the adjustment angle of the cutting blade 5 on the operation panel can be set as “laying tatami”, “normal”, “edge unfolded thickness”, “edge unfolded thin”. A plurality of names are stored by a program, the inclination of the cutting blade 5 corresponding to the name is set to 0 degrees, 4 degrees, 8 degrees, and 13 degrees and stored, and the angle adjustment is performed by calling the type of tatami to be manufactured. An implemented program may be adopted. With such an operation method, it is possible to program a cutting angle according to the finish level of the user, and the usability can be improved.

  When the angle adjustment of the cutting blade 5 is completed, the rod 16a of the turning lock cylinder 16 is returned, and the guide plate 1c and the base plate 13b are sandwiched between the locking plates 16b to lock the angle adjusting base 13 from turning. It is.

  In the above embodiment, the sewing needle 2 is disposed on the flat sew sewing machine 1, and the cutting blade 5 is folded on the rails 29, 29 with respect to the sewing needle 2 in the flat sew sewing machine 1. Although described as a configuration that can be moved in the width direction, the cutting blade 5 is fixed without being moved by numerical control of the cutting blade positioning motor 31, and the operation mechanism unit of the sewing needle 2 is numerically controlled by a positioning motor or the like. It is good also as a structure which moves. However, the cutting blade 5 adopts the configuration of the slide base 8 that slides to the cutting position and the retracted position.

  Moreover, in said embodiment, the example which comprised the mechanism which can each be angle-adjusted by having the some guide pin provided in the base plate of the angle adjustment base 13 inserted in the elongate hole provided in the guide plate was disclosed. However, the guide is not pin-shaped, and a circular guide rotatably provided on the base plate or the bearing itself may be adopted as the guide. Further, in the case of such a rotatable guide, the surface of the long hole where the rotatable guide fitted into the long hole 17c and the long hole 18c abuts is a circular arc on the side far from the cutting blade 5. It is good to make it contact | abut to the surface which comprises. Further, the surface of the long hole with which the rotatable guide fitted into the long hole 17a and the long hole 18a abuts may be brought into contact with a surface forming an arcuate arc closer to the cutting blade 5. When abutting as described above, the guide plate is sandwiched between the rotatable guide fitted into the elongated hole 17c and the elongated hole 18c and the rotatable guide fitted into the elongated hole 17a and the elongated hole 18a. For this reason, the turning of the angle adjustment base 13 can be reliably performed without the backlash.

Further, the cutting blade 5 has been described as a circular rotary cutter, but may be constituted by a swinging blade attached to a swinging shaft. The present invention can be applied to a sewing device that performs only the flat sew sewing process or a sewing device that performs both the flat sew sewing process and the reverse stitching process. One unit may be configured to perform flat sew on only one side of the tatami mat, or may be configured as a device that performs flat sew on two sides simultaneously with two flat sew sewing machines.

1 Flat stitch sewing machine
1a Cutting blade positioning base plate 1b, 1c Guide plate 2 Sewing needle
3 rails
4 Octagonal blade
5 Cutting blade 6 Rotating shaft 7 Pulley 8 Slide base 8a Slide unit 9 Pulley
10 Motor 11 Cylinder 12 Rail
13 Angle adjustment base
13a, 13b Base plates 14a, 14b, 14c Guide pins 15a, 15b, 15c Guide pins 16 Rotation lock cylinder 16a Rod 16b Lock plates 17a, 17b, 17c Slots 18a, 18b, 18c, 18d Slot 19 For angle adjustment Motor 19a Shaft 20 Shaft coupling 21 Screw member 22 Bracket 23 Pin 24 Swing base 25 Swing adjustment nut 26 Bracket 27 Pin 28 Slide moving means 29 Rail 30 Lower frame 31 Cutting blade positioning motor

Claims (4)

In a flat sew sewing device that flat sew tatami mat and paper below tatami mat on the tatami floor,
An angle adjustment base provided with a cutting blade and a driving source for driving the cutting blade;
A guide member for supporting the angle adjustment base;
The angle adjustment base is provided so as to be able to turn at a turning center line passing through a point that coincides with the upper surface position of the tatami mat cut by the cutting blade with respect to the guide member . It is characterized in that the angle of the upper surface of the tatami to be cut by the cutting blade installed on the angle adjustment base can be adjusted in a fixed state by being positioned horizontally and perpendicular to the width direction of the tatami mat. Flat stitch sewing device. An angle adjustment base provided with a cutting blade and a driving source for driving the cutting blade;
A guide member for supporting the angle adjustment base;
The angle adjustment base is provided in parallel with two base plates provided with a plurality of guide pins protruding in a direction in which the plurality of guide pins are inserted into the guide members,
The guide member that supports the angle adjustment base is provided with a plurality of arc-shaped elongated holes into which the guide pins are fitted, and the plurality of arc-shaped elongated holes provided in the respective guide members are cut into tatami mats. Share a single turning center that passes through the top surface,
The cutting angle of the cutting blade can be adjusted by turning the position of the angle adjusting base with respect to the guide member about a straight line connecting the turning centers, and the cutting position of the cutting blade is aligned with the straight line connecting the turning centers. The flat stitch sewing apparatus according to claim 1, wherein 3. A flat sew stitch according to claim 1, further comprising an angle adjustment drive source having an angle adjustment base, wherein the angle adjustment base is automatically adjusted by numerically controlling the drive source. Landing gear. The flat stitch sewing apparatus according to any one of claims 1 to 3, further comprising means for locking the angle adjustment base so as not to pivot with respect to the guide member .

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