JP2007167563A - Tatami mat sewing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide tatami mat sewing apparatus which can solve the problem of fixing the position of a Tatami mat and permits a horizontal turning of the Tatami mat. <P>SOLUTION: The Tatami mat sewing apparatus performs flat piercing stitching and reverse stitching while moving a sewing machine 4 along a path parallel with the upper front 61 or the lower front 62 of the Tatami mat 6 by horizontally turning the Tatami mat 6, includes a Tatami mat presser 1 pressed against the top face of the Tatami mat 6 and a Tatami mat base 2 supporting the underside of the Tatami mat 6, either the Tatami mat presser 1 or the Tatami mat base 2 or both are provided with a horizontal turning shaft 13 with respect to a frame 3, integrally horizontally turns the Tatami mat presser 1 and the Tatami mat base 2 with the Tatami mat 6 held in a pinched condition by the Tatami mat presser 1 and the Tatami mat base 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tatami stitching device capable of executing lower front flat stitching or reverse stitching following upper front flat stitching or reverse stitching by horizontally turning the tatami mat while being held between a tatami mat and a tatami presser. .

  In the production of tatami mats, various production apparatuses are being automated for the purpose of labor saving and efficiency. For example, Patent Document 1 discloses a tatami mat on which a tatami is placed and a long side of the tatami mat while traveling along a running path extending along the longitudinal direction of the tatami mat on one side in the width direction of the tatami mat. For positioning the tatami by aligning the position with the reference mark provided on the front side of the tatami that is provided on the tatami stand and provided on the tatami stand. A tatami stitching device including a table ruler and control means for controlling the sewing machine is disclosed. This Patent Document 1 is characterized in that the table ruler is disposed on the side of the tatami mat in the width direction and on the other side opposite to the sewing machine.

  The tatami mat of Patent Document 1 is a turntable, and the tatami mat placed on the tatami mat can be horizontally swiveled by a direction changing device provided substantially at the center. The direction changing device causes the tatami mat to turn horizontally within a range of 180 degrees by expanding and contracting the rod of the cylinder. Since the tatami is fixed by a tatami fastening device, for example, during the lower front sewing operation, the tatami fastening device is first opened for horizontal turning, and the tatami stand is turned horizontally after the tatami is freed. From this, the tatami after the horizontal turning is aligned again before the upper front sewing operation, and the position is fixed by the tatami fastening device (Patent Documents 1 [0019] and [0020]).

Japanese Patent Laid-Open No. 2003-071170

  It has been publicly known from before Patent Document 1 that the tatami mat of the tatami sewing apparatus is used as a turntable and the tatami mat placed on the tatami mat is horizontally swiveled. Patent Document 1 automates the horizontal swiveling. is there. However, the automation of the tatami mat of Patent Document 1 requires labor saving and efficiency, such as the tatami mating device is opened, the tatami mat is once freed, and the tatami mat must be positioned and fixed by the tatami mating device after horizontal turning. It is far from the automation that aims to make it simple, and it is just a horizontal turn of the tatami using power.

  Further, the horizontal turning of the tatami table by expanding and contracting the rod of the cylinder inevitably limits the swivel range of the tatami table and can only reciprocate within a range of 180 degrees. Certainly, the horizontal turn of the tatami is sufficient if it can reciprocate within a 180 degree turning range. However, it is often preferable that the turning direction can be selected depending on the installation location of the sewing device, the work procedure, and the work vehicle, or, in some cases, the horizontal turning can be repeated repeatedly in the same direction.

  Thus, although automation of a tatami stand comprising a turntable capable of horizontally turning a tatami in a tatami stitching device is preferable, there is a problem of fixing the position of the tatami with respect to the tatami stand for automation aimed at labor saving and efficiency. In addition, there is a need to use a turning means other than the cylinder. Therefore, in order to solve these problems and satisfy the above-mentioned need, a tatami mat in a tatami sewing apparatus was examined.

  What was developed as a result of the study was a tatami stitching device that horizontally stabs the tatami mat and moves the stitcher (sewing machine) along a parallel path in front of or under the tatami mat while performing flat stitch stitching and reverse stitching. A tatami presser that is pressed against the upper surface of the tatami mat and a tatami stand that supports the lower surface of the tatami mat, and the tatami presser and the tatami stand are provided with a horizontal pivot shaft for the cradle, This is a tatami stitching device that horizontally swings the tatami mat, the tatami mat presser and the tatami mat stand while keeping the tatami sandwiched. The tatami stitching device of the present invention is characterized in that the tatami mat, the tatami mat presser and the tatami mat stand are horizontally rotated integrally while maintaining the state in which the tatami mat is held between the tatami mat presser and the tatami mat stand. As a result, if the distance between the top and bottom front of the tatami is equal from the horizontal swivel axis, the tatami that has been swung horizontally after the top front flat stitch or reverse stitching will not be aligned again, Can be flat stitched or reverse stitched.

  Here, it is preferable that the horizontal turning shaft is configured to horizontally turn the tatami mat, the tatami mat holder, and the tatami stand continuously and horizontally by a horizontal turning force transmitted from a rotational power source provided on the gantry. Actually, since the work is completed if the top and bottom front of the tatami are flat stitched or reverse stitched by the sewing machine, it is not necessary to turn the tatami table horizontally beyond 180 degrees. It is thought that it is used to repeat inversion in a range of degrees. However, until now, the tatami mat could not be swiveled horizontally beyond 180 degrees, but according to the present invention, the tatami mat can be swiveled horizontally beyond 180 degrees, so an unprecedented work procedure can be realized. .

  In the tatami-stitching device of the present invention, it is preferable to provide alignment means for determining the position of the tatami mat held between the tatami mat holder and the tatami mat on one or more of the tatami mat press, the tatami mat or the gantry. Specifically, the alignment means includes an alignment ruler extending in parallel with the upper front or lower front, and a rotary arm provided on either the tatami retainer, the tatami mat or the gantry, and the alignment ruler is used by the rotary arm. In addition, it is supported so that it can rotate up and down between the retracted position, and the alignment ruler of the use position rotated and lowered is directed to the front or lower front of the tatami that is held between the tatami press and the tatami stand, and the horizontal center of the tatami An example is a configuration in which the upper and lower fronts of the tatami are aligned in parallel with the track of the sewing machine while matching the pivot axis. In the present invention, the horizontal center of the tatami mat and the horizontal swivel axis of the gantry are made to coincide with each other so that the tatami mat does not need to be aligned again after the tatami mat is horizontally swiveled. This means that when the tatami stand is turned 180 degrees horizontally, the upper front and the lower front are in substantially the same position.

  Since the tatami mat, the tatami mat holder and the tatami mat table are horizontally swiveled together, it is sufficient that either the tatami mat holder or the tatami mat table has a horizontal swivel axis. When providing a horizontal swivel axis to the tatami press, the tatami press is a rectangular frame that extends over the tatami stand, and the tatami stand is suspended between a use position and a retracted position by suspending the tatami stand by a lifting cylinder suspended from the tatami press. Illustrated is a structure that supports the tatami mat holder so that it can be moved up and down vertically, and has a horizontal swivel shaft on the tatami mat presser, and raises the tatami mat with the tatami mat to the tatami mat press to the use position. it can. In addition, when a horizontal swivel axis is provided on the tatami stand, the tatami retainer is a plate or bar that runs vertically or crosses above the tatami stand, and the tatami retainer is pushed up by a lifting cylinder standing on the tatami stand and the tatami retainer is used and The tatami stand is supported by being vertically movable between the retracted positions, and a horizontal swivel shaft is provided on the tatami stand. The structure which clamps can be illustrated.

  The horizontal swivel amount of the tatami can be controlled as the horizontal swivel amount of the horizontal swivel axis, but if you consider flat stitching or reverse stitching the top or bottom of the tatami by the sewing machine, It is preferable that the tatami can be firmly fixed. From this, the tatami sewing apparatus of this invention is good to provide the position fixing means which controls the horizontal rotation of the tatami clamped by a tatami press and a tatami stand in any one or more of a tatami press, a tatami stand, or a mount. This position fixing means may hold down the tatami itself, for example, and may regulate horizontal rotation of the tatami press and the tatami stand via the tatami. However, in this case, the effect of regulating horizontal turning may change depending on the type of tatami mat. From this, it is preferable that the reliable horizontal turning control is realized by a configuration in which the tatami presser or the tatami stand is restrained with respect to the gantry.

  Specifically, the position fixing means includes a fitting protrusion protruding inward in the radial direction of the tatami stand horizontally turning from the gantry, and a fitting receiving portion protruding outward in the radial direction of the tatami stand turning horizontally from the tatami stand. The fitting projection is supported by a rotating means provided on the gantry so that it can be rotated up and down between the use position and the retracted position, and is fitted to the fitting receiving part of the tatami stand at the use position where the rotating means is rotated and lowered. In addition, a configuration in which the tatami mat is constrained in the turning direction can be exemplified. The fitting of the fitting protrusion and the fitting receiving part not only restrains the tatami stand in the turning direction, but also restricts the horizontally swiveled tatami stand only at the position where the fitting protrusion fits into the fitting receiving part. By doing so, it also has the function of determining the horizontal turning amount of the tatami mat. In other words, if the fitting receiving part is arranged every 180 degrees with respect to the fitting protrusion, the tatami mat can be horizontally rotated at intervals of 180 degrees.

  The fitting protrusions and fitting receiving parts that constitute the position fixing means will fit reasonably if they are completely coincident with each other. There is a possibility that the fitting receiving part of the tatami mat is displaced from the mating protrusion. Therefore, the position fixing means chamfers the outer edge on the lower surface side of the fitting projection so that the fitting receiving portion can be easily fitted, and the outer surface of the remaining fitting projection that has been chamfered can be connected to the fitting receiving portion. It is good to make it the structure which touches an inner surface. On the other hand, the position fixing means chamfers the inner edge on the upper surface side of the fitting receiving portion so that the fitting receiving portion can be easily fitted, and the inner side surface of the remaining fitting receiving portion which is chamfered is a fitting protrusion. You may make it contact the outer side surface of. Further, the outer edge on the lower surface side of the fitting protrusion and the inner edge on the upper surface side of the fitting receiving part may be chamfered together, but in this case, the remaining chamfered outer surface of the fitting protrusion is chamfered. The size of each chamfer is determined so that the inner surface of the fitting receiving portion is in contact with the inner surface.

  In addition, the fitting receiving portion that constitutes the position fixing means is in a state of floating in the air while the tatami base is horizontally swiveled, and the fitting protrusion is fitted when it reaches the gantry again. At this time, if the fitting receiving portion is in an unstable state, it is difficult to fit the fitting protrusion. Therefore, the position fixing means may be provided with a guide plate that slides on the lower surface of the mating receiving portion of the tatami mat on the pedestal, and chamfers the outer edge on the lower surface side of the mating receiving portion to make it easier to ride on the guide plate. On the contrary, a guide plate for slidingly contacting the lower surface of the mating receiving portion of the tatami stand is provided on the gantry, and the outer edge of the upper surface side of the guide plate is chamfered so that the fitting receiving portion can easily ride on the guide plate. Alternatively, both the lower surface side outer edge of the fitting receiving portion and the upper surface side outer edge of the guide plate may be chamfered. Accordingly, the fitting receiving portion is supported by the guide plate at the position where the fitting protrusion is fitted, and is stabilized.

  The tatami stitching device of the present invention allows the tatami mat, the tatami mat presser and the tatami mat to be horizontally swiveled integrally while maintaining the state in which the tatami mat is held between the tatami mat press and the tatami mat, so The sewing or reverse stitching can be continuously executed, and an effect of achieving high labor saving and efficiency can be obtained. This is an effect that is better realized by aligning the horizontal center of the tatami with the tatami presser or the horizontal swivel axis of the tatami stand by the alignment means. In addition, by suspending the tatami stand from the tatami press, or conversely pushing up the tatami press to the tatami stand and supporting it, horizontal swivel with both the tatami press and the tatami stand sandwiched is easy. realizable. Furthermore, the horizontal turning of the tatami can be stably controlled by the position fixing means, so that the flat stitch or the reverse stitch before or below the tatami can be stably executed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view showing a tatami stitching apparatus according to the present embodiment to which the present invention is applied, FIG. 2 is a plan view showing the tatami stitching apparatus according to the present embodiment, and FIG. 3 is a right side view showing the tatami stitching apparatus according to the present embodiment. FIG. 4 is a front view corresponding to FIG. 1 showing another example of the tatami stitching apparatus (for convenience of explanation, illustration of the position fixing means 5 is omitted), and FIG. 5 shows the position fixing means 5 in the tatami stitching apparatus of this example. FIG. 6 is a partially enlarged view corresponding to FIG. 1 showing the tatami-stitching device of the present example in a state where the position fixing means 5 is released, and FIG. 7 is a partially enlarged view corresponding to FIG. 4 showing the position fixing means 5 in a released state. FIG. 8 is a plan view corresponding to FIG. 2 showing the tatami stitching apparatus of this example in a state where the position fixing means 5 is released and the tatami mat 6, the tatami mat presser 1 and the tatami stand 2 are horizontally swung together. .

  As shown in FIGS. 1 to 3, the tatami sewing apparatus of this example has a configuration in which a tatami presser 1 and a tatami stand 2 that horizontally rotate integrally are supported on the gantry 3 only by a horizontal swivel shaft 13. The gantry 3 is provided with a pair of position fixing means 5 at positions sandwiching the tatami presser 1 composed of a rectangular frame 11 from the left and right. FIG. 1 shows a state in which the tatami presser 1 is horizontally swiveled by the position fixing means 5. A sewing machine (sewing machine) 4 is attached to a table 41 that is movable along a rail 31 provided on the gantry 3 on the back side (back side in FIG. 1) of the gantry 3. Thus, the tatami mating device of the present invention has the same configuration as that of the conventional tatami mating device of the same type in appearance, and the tatami mat 6 is clamped by the tatami presser 1 and the tatami stand 2 in the operation. The same is true in that the upper front 61 or the lower front 62 of the tatami 6 is flat-stitched or back-stitched by the sewing machine 4 that moves along the gantry 3.

  The tatami press 1 of this example is a rectangular frame 11 that extends over the tatami mat 2, and a press plate 113 attached to the lower surface of the upper frame 111 is pressed against the upper surface of the tatami 6. In this example, the alignment means 14 for the tatami 6 is provided in the upper frame 111. The alignment means 14 includes an alignment ruler 141 extending in parallel with the upper front 61 or the lower front 62 of the tatami 6 sandwiched between the tatami presser 1 and the tatami stand 2, and a rotating arm 142 provided on the upper frame 111. . As a result, the alignment ruler 141 has a use position where the rotary arm 142 is horizontal and directed to the upper front 61 or the lower front 62 of the tatami 6 and a retracted position where the rotary arm 142 is vertical and retracts. It can freely rotate up and down.

  The tatami mat 6 has the upper front 61 or the lower front 62 aligned with the alignment ruler 141 at the use position, so that the track of the sewing machine 4 (the sewing machine 4 moving along the rail 31 is drawn in a meandering manner) This is parallel to the movement trajectory. Furthermore, in this example, the horizontal center of the tatami 6 and the horizontal turning shaft 13 are made to coincide with each other by placing the alignment ruler 141 on the upper and front 61 of the tatami 6. As a result, the upper front 61 and the lower front 62 of the tatami 6 before and after the horizontal turn are in the same positional relationship, and the sewing machine 4 has substantially the same track for the tatami 6 held between the tatami presser 1 and the tatami stand 2. Even when moving along the upper front 61 and the lower front 62, the upper front 61 and the lower front 62 can be similarly flat stitched or reverse stitched.

  The tatami mat 2 of this example is suspended by a pair of left and right lifting cylinders 12 with the lifting rod 121 lowered from the upper frame 111 of the tatami retainer 1 downward. The tatami mat 2 vertically moves up and down between a use position where the elevating rod 121 is contracted to hold the tatami 6 together with the tatami presser 1 and a retracted position where the elevating rod 121 is extended to release the tatami 6. That is, the tatami 6 is inserted between the press plate 113 of the tatami press 1 and the tatami stand 2 and placed on the tatami stand 2, and then the lifting rod 121 is contracted and lifted together with the tatami stand 2, and the press plate 113. And the tatami mat 2. In addition, as shown in FIG. 4, for example, an elevating cylinder 73 is erected on a rectangular frame 72 provided on a tatami table 71, and the elevating rod 731 is lowered downward from the elevating cylinder 73 and is a tatami presser made of a plate material. 74 may be suspended. In this case, the tatami mat 71 is provided with a horizontal turning shaft 75.

  The tatami mat holder 1 and the tatami mat table 2 of this example are integrally supported by a horizontal turning shaft 13 provided on the lower surface of the lower frame 112 of the tatami mat holder 1 and are belted from a rotational drive source (transmission motor) 32 fixed to the gantry 3. The horizontal turning shaft 13 can be driven by the rotational power transmitted by the transmission to continuously make the horizontal turning. Actually, since it is only necessary to perform sewing work on the upper front 61 and the lower front 62 of the tatami 6, the turning amount of the horizontal turning shaft 13 is reversed horizontally (180 degrees) by, for example, a control device (not shown). It seems to be the case that it is limited to the range to be turned horizontally). However, since the tatami sewing apparatus of the present invention can continuously turn the tatami 6 horizontally, a new work procedure for horizontally turning the tatami 6 beyond 180 degrees may be adopted.

  As shown in FIGS. 1 to 3 and 5, the position fixing means 5 of this example is a fitting protrusion that protrudes inward in the radial direction with respect to the rectangular frame 11 of the tatami retainer 1 that rotates horizontally from the gantry 3. 51 and a fitting receiving portion 54 that protrudes outward in the radial direction of the tatami mat 2 that rotates horizontally from the rectangular frame 11. The fitting projection 51 is provided on the gantry 3 with a rotating rod 531 of a rotating cylinder 53 that is a rotating means suspended swingably on a support column 52 provided on the gantry 3. It is a plate material that rotates up and down around the rotating shaft 511. Specifically, the fitting protrusion 51 has a use position where the fitting rod 51 is rotated and lowered by extending the rotating rod 531, and is fitted into the fitting receiving portion 54, and the fitting projection 51 is rotated and raised by contracting the rotating rod 531. It rotates up and down between the retracted position to be separated from the portion 54. The fitting receiving portion 54 is configured by providing a concave portion 542 in a block 541 projecting left and right from the rectangular frame 11 constituting the tatami presser 1, and slides on a guide plate 55 provided with a rotating shaft 511 of the fitting projection 51. Make contact.

  The position fixing means 5 of this example regulates horizontal turning of the tatami presser 1. For this reason, the pair of left and right position fixing means 5 are arranged on the fitting axis B which is shifted from the left and right axis A passing through the horizontal turning shaft 13 by the deviation width δ in the horizontal turning direction, and they are point-symmetrical in positional relationship. (See FIG. 2). Thereby, only when the horizontal turning amount of the tatami presser 1 is exactly 180 degrees, the fitting protrusion 51 and the fitting receiving portion 54 are fitted in the left and right position fixing means 5. The position fixing means 5 arranged on the fitting axis B deviated from the left and right direction axis A may be either left or right, but in this example, the tatami presser 1 horizontally turns every 180 degrees, so a pair of left and right positions. The fixing means 5 is provided so that the corresponding fitting receiving portion 54 exists even if the left and right fitting projections 51 are switched.

  Further, the position fixing means 5 of this example has a function of correcting the position shift when the tatami presser 1 and the tatami stand 2 are displaced after horizontal turning. For this reason, each position fixing means 5 has a chamfered portion 512 on the outer edge on the lower surface side of the fitting protrusion 51, and a chamfered portion 543 on the inner edge on the upper surface side of the recess 542 provided in the block 541 of the fitting receiving portion 54. Even if the fitting projection 51 and the fitting receiving portion 54 are displaced within the range of the chamfered portions 512 and 543, the fitting projection 51 is fitted while the chamfered portions 512 and 543 rub against each other. It guides to the receiving part 54 so that the positional deviation can be corrected (see FIG. 5). In this way, the position fixing means 5 enables correction of the positional deviation, so that the tatami presser 1 can be accurately turned horizontally.

  Further, the position fixing means 5 of this example forms a chamfered portion 544 on the outer edge on the lower surface side of the block 541 of the fitting receiving portion 54 and a chamfered portion 551 on the outer edge on the upper surface side of the guide plate 55, respectively. The fitting receiving portion 54 to be carried on makes it easy to get on the guide plate 55. In this example, since the tatami presser 1 is supported only by the horizontal turning shaft 13, the fitting receiving portion 54 farthest from the horizontal turning shaft 13 may hang down. The chamfered portions 544 and 551 of the fitting receiving portion 54 and the guide plate 55 have a function of facilitating the horizontal turning by making the fitting receiving portion 54 hanging down during the horizontal turning easy to ride on the guide plate 55. In addition, in order to prevent the fitting receiving portion 54 from hanging down, for example, a guide (not shown) that is in sliding contact with the lower frame 112 of the tatami presser 1 may be provided on the gantry 3.

  The tatami stitching device of this example is used in accordance with the following procedure, for example. First, as described above, the tatami 6 is placed on the tatami mat 2 that has been lowered by extending the elevating rod 121, and the upper and lower 61 of the tatami 6 is set as the track of the sewing machine 4 by the alignment ruler 141 provided on the tatami presser 1. After aligning them in parallel (see FIG. 3), the elevating rod 121 is contracted to raise the tatami base 2 and, as seen in FIGS. 1 and 2, between the press plate 113 of the tatami press 1 and the tatami base 2 Hold the tatami 6 with At this time, the fitting protrusion 51 is fitted to the fitting receiving portion 54 that protrudes from the tatami presser 1, and the horizontal turning of the tatami presser 1 is restricted by the position fixing means 5 (FIG. 4). In this way, the sewing machine 4 moves along the upper and lower 61 of the tatami 6 sandwiched between the tatami presser 1 and the tatami stand 2, and performs flat stitch sewing or reverse stitching.

  Conventionally, when the tatami 6 is horizontally swiveled according to the tatami stand 2, the tatami 6 is released from pressing by the tatami press 1 (more precisely, the tatami 6 is pushed up by the tatami stand 2). However, the tatami sewing apparatus according to the present invention rotates the tatami 6, tatami retainer 1, and tatami stand 2 horizontally while holding the tatami 6 between the tatami retainer 1 and the tatami stand 2. The tatami 6 is not released from the attachment. In order to horizontally turn the tatami mat 6, the tatami press 1 and the tatami stand 2, the horizontal turning restriction of the tatami press 1 by the pair of left and right position fixing means 5 is released. Specifically, as seen in FIGS. 5 and 6, the rotating rod 531 is contracted to rotate the fitting protrusion 51 and release the fitting with the fitting receiving portion 54. As a result, the tatami presser 1 becomes free in the horizontal turning direction and horizontally turns according to the operation of the horizontal turning shaft 13 as shown in FIG. And since the tatami 6 is clamped by the said tatami mat press 1 and the tatami stand 2, the tatami 6 also turns horizontally.

  In the tatami sewing apparatus of this example, when the tatami 6 finishes the 180 degree horizontal turning, the horizontal turning of the tatami presser 1 is again restricted by the pair of left and right position fixing means 5. At this time, as described above, the tatami 6 is sandwiched between the tatami presser 1 and the tatami stand 2 with the horizontal center aligned with the horizontal turning shaft 13, so that the tatami 6 under the 180 degrees horizontal turning is finished. The front 62 reaches the same positional relationship as the upper front 61 that has finished the flat stitch first. As a result, the sewing machine 4 can move along the same track as the flat stitch sewing of the upper front 61 and can perform the flat stitch or reverse stitching of the lower front 62. The tatami sewing device of the present invention rotates the tatami 6 horizontally without releasing it to ensure the continuity of the sewing work, so that it is not necessary to adjust the trajectory of the sewing machine 4 significantly. 6 preferably has its horizontal center aligned with the horizontal pivot axis 13.

It is a front view showing the tatami mat sewing apparatus of this example to which the present invention is applied. It is a top view showing the tatami sewing apparatus of this example. It is a right view showing the tatami sewing apparatus of this example. It is the front view equivalent to FIG. 1 showing the tatami mat sewing apparatus of another example. It is the elements on larger scale showing the position fixing means in the tatami sewing apparatus of this example. It is a front view equivalent to FIG. FIG. 5 is a partially enlarged view corresponding to FIG. 4 showing the position fixing means in a released state. FIG. 3 is a plan view corresponding to FIG. 2 illustrating the tatami mating device of the present example in a state where the position fixing means is released and the tatami mat, the tatami mat presser, and the tatami stand are horizontally swung together.

Explanation of symbols

1 Tatami presser
11 Rectangular frame
12 Lifting cylinder
13 Horizontal swivel axis
14 Positioning means 2 Tatami stand 3 Base 4 Sewing machine 5 Position fixing means
51 Mating protrusion
52 prop
53 Rotating cylinder
54 Mating receptacle
55 Information board 6 tatami mats

Claims (12)

In a tatami stitching device that performs horizontal stab stitching or reverse stitching while a sewing machine moves along a trajectory parallel to the front or lower front of the tatami by horizontally turning the tatami, the tatami presser that presses against the upper surface of the tatami mat and the above A tatami stand that supports the lower surface of the tatami mat, a horizontal swivel axis for the gantry is provided on one or both of the tatami retainer and the tatami mat, while maintaining the state where the tatami is held between the tatami retainer and the tatami mat, A tatami stitching device characterized in that a tatami presser and a tatami stand are horizontally swiveled together. The tatami stitching device according to claim 1, wherein the horizontal turning shaft can horizontally turn the tatami mat, the tatami mat presser and the tatami stand continuously and horizontally by a horizontal turning force transmitted from a rotational power source provided on the gantry. The tatami stitching device according to any one of claims 1 and 2, wherein an alignment means for determining a position of a tatami to be held between the tatami retainer and the tatami stand is provided on any one or a plurality of the tatami retainer, the tatami stand, and the mount. The alignment means is composed of an alignment ruler extending in parallel with the upper front or lower front, and a rotary arm provided on either the tatami retainer, the tatami stand or the gantry, and the alignment ruler is used and retracted by the rotary arm. Between the horizontal center of the tatami mat and the horizontal swivel The tatami stitching device according to claim 3, wherein the upper and lower fronts of the tatami are aligned in parallel with the track of the sewing machine. The tatami presser is a rectangular frame that extends over the tatami stand. The tatami stand is supported by a lifting cylinder suspended from the tatami presser so that the tatami stand can be moved vertically between the use position and the retracted position. With a horizontal swivel axis,
The tatami mating device according to claim 1 or 2, wherein the tatami mat is clamped between the tatami mat and the tatami stand by raising the tatami mat on which the tatami is placed to the use position. The tatami presser is a plate or bar that runs vertically or crosses above the tatami stand, and supports the tatami presser so that it can be raised and lowered vertically between the use position and the retracted position by pushing up the tatami presser by a lifting cylinder standing on the tatami stand. 3. The tatami mat according to claim 1, wherein the tatami mat is provided with a horizontal pivot, and the tatami mat is clamped between the tatami mat and the tatami mat by lowering the tatami mat to the use position toward the tatami mat on which the tatami is placed. Tatami sewing device. The tatami stitching device according to claim 1 or 2, wherein a position fixing means for restricting horizontal turning of the tatami mat sandwiched between the tatami mat holder and the tatami mat is provided on any one or a plurality of the tatami mat holder, the tatami mat or the gantry. The position fixing means includes a fitting protrusion that protrudes inward in the radial direction of the tatami stand that horizontally turns from the gantry, and a fitting receiving portion that protrudes outward in the radial direction of the tatami stand that horizontally turns from the tatami stand. The fitting protrusion is supported by the rotating means provided on the gantry so that it can freely rotate up and down between the use position and the retracted position, and is fitted to the fitting receiving part of the tatami table at the use position where the rotating means is rotated and lowered. The tatami stitching device according to claim 7, wherein the tatami mat is constrained in a turning direction. The position fixing means chamfers the outer edge on the lower surface side of the fitting projection so that the fitting receiving portion can be easily fitted, and the outer side surface of the remaining fitting projection that is chamfered is the inner surface of the fitting receiving portion. The tatami stitching device according to claim 8, wherein the tatami stitching device is brought into contact with the tatami mat. The position fixing means chamfers the inner edge on the upper surface side of the fitting receiving portion to facilitate fitting into the fitting receiving portion, and the inner side surface of the remaining fitting receiving portion chamfered to the outer surface of the fitting protrusion. The tatami stitching device according to claim 8 or 9, wherein the tatami stitching device is brought into contact with the tatami mat. The position fixing means is provided with a guide plate that slides on the lower surface of the mating receiving portion of the tatami mat on the gantry, and the outer edge of the lower surface side of the mating receiving portion is chamfered to ride the fitting receiving portion on the guide plate. The tatami-stitching device according to any one of claims 8 to 10, which makes it easy. The position fixing means is provided with a guide plate that slides on the lower surface of the mating receiving portion of the tatami mat on the gantry, and the outer edge of the upper surface side of the guide plate is chamfered so that the fitting receiving portion can easily ride on the guide plate. The tatami stitching device according to any one of claims 8 to 10.

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