JP5953494B2 - Borderless tatami mat manufacturing tool and manufacturing method using the tool - Google Patents

Description

  The present invention relates to the manufacture of borderless tatami mats. More specifically, the present invention relates to a tool for performing groove cutting for bending at a position corresponding to the position of the upper surface edge of the tatami floor and the lower surface edge of the tatami floor, and a method for manufacturing an edgeless tatami using the tool. .

  The demand for borderless tatami mats is increasing, and a large number of borderless tatami mat manufacturing apparatuses are known. In the present applicant as well, as a patent document 1, a leaf spring-like shape perpendicular to the surface of the tatami mat is used to determine a table on which the tatami mat and the tatami floor that have been sewed are placed, and the folding position of the tatami mat table over the entire length of the tatami mat. It has a positioning plate that can be moved up and down, a floor presser that fixes the tatami mat and the tatami floor on the table, and a folding plate that moves up and down while sliding on the outside of the tatami mat, and the folding position is determined by the positioning plate. The tatami mat is folded along the positioning plate that is in contact with the long side of the tatami while sliding the outside of the tatami mat by moving the tatami mat up and down a predetermined number of times. We are proposing an edgeless tatami surface folding machine.

  Also, as shown in Patent Document 2, in order to bend the tatami mat along the long side of the tatami mat at right angles to the texture of the tatami mat table, a table on which the tatami mat can be placed and moved up and down and placed on the table A tatami holding means for preventing movement by pressing the tatami mat, a floor bending machine for bending so that the back side of the tatami floor is convex at the center of the tatami width, a positioning means capable of moving up and down for determining the folding position of the tatami surface, A rim having folding means for folding the upper corner of the tatami mat at the protruding portion of the tatami mat along the side edge of the tatami mat and a means for folding the tatami mat along the lower corner of the long side of the tatami floor when the table is lowered. A tatami mat folding machine is also proposed.

  Also, as shown in Patent Document 3, two melting grooves are formed at intervals suitable for the thickness of the tatami floor by a heating iron in a direction perpendicular to the rush or parallel to the end of the tatami floor, A method for processing an edgeless tatami is proposed by a person other than the present applicant, which is characterized in that it is bent along a melting groove and fixed along a tatami floor before or after cooling completely.

Japanese Patent No. 4375509 Japanese Patent No. 4604255 JP 2000-73538 A

  As described above, various proposals have been made for borderless tatami mats, and they have been increasingly adopted as residential tatami mats. And the thickness of the edgeless tatami is increasing, and the demand for thin tatami is increasing. The applicant has proposed the devices disclosed in Patent Document 1 and Patent Document 2 described above, but also has a problem to be solved.

  In the apparatus of Patent Document 1, the tatami table whose folding position is determined by the positioning plate is brought into contact with the long side of the tatami while sliding on the outside of the tatami table by moving up and down the number of times the folding plate is set in advance. Since the tatami table is folded along the positioning plate, the tatami table has a crease on the front side of the tatami mat. It became a structure that it was difficult to attach such a crease.

  In the apparatus of Patent Document 2, the strength of the tatami floor itself is reduced when the thickness of the tatami mat is reduced due to the configuration of folding means that bends the upper corner of the tatami mat along the side edge of the tatami mat when the table descends. Therefore, when the table is lowered, the end of the tatami floor is damaged when the tatami surface is bent.

  And in the apparatus of patent document 1 and patent document 2, it is compared in order to position and fold the tatami mat with respect to the tatami floor so that the upper front side of the tatami folds in a straight line at a position where the tatami mat is easy to fold (tatami warp position). Although it is easy to bend, the folding position is determined by the finished dimensions on the lower front side of the tatami mat. Therefore, it is not always possible to bend at the warp position of the tatami mat that is easy to fold.

  Therefore, it is necessary to put a crease on the tatami mat. However, it is difficult to fold the tatami mat, and even with a small amount of crease, the tatami mat can be folded along the tatami floor as shown in FIG. 19 (a). Or when the weaving on the tatami surface, the part that is already in contact with the warp by the warp has a bend fold, and it is bent at this warp part rather than the crease attached in consideration of the finished dimensions. Therefore, there is a problem that it is difficult to bend with good dimensional accuracy and good aesthetics (see FIG. 19B). For this reason, it is necessary to firmly crease the position of the finished dimensions, which is very laborious. In particular, depending on the type of tatami mat, there is a tatami mat with an interval of about 7 mm between the warp and the warp. If the position to be folded, that is, the position of the finished dimension is located between this warp and the warp, it is very difficult to bend and creases It took time and effort.

  Regarding the proposal of Patent Document 3, two melting grooves are formed in a direction perpendicular to the rug of the tatami mat woven with a plastic imitation rush or parallel to the end of the tatami floor and at an interval corresponding to the thickness of the tatami floor by a heating iron. However, since the heating iron does not correspond to the thickness of various tatami floors, it is necessary to prepare heating irons as many as the thickness of the tatami floor to be handled, which is inconvenient. In addition, since the resin in which the rush is melted remains around the molten groove, if the resin is not removed, swelling will occur when the tatami surface is bent by the remaining resin, so the resin remaining around the molten groove Removal was indispensable, and problems remained as work.

In addition, although the folding is easy to perform before the melting part is completely cooled and is easy to follow the floor, it is described in Patent Document 3 that it is possible to cool even after cooling because a groove is formed. In each part, each imitation rush melts and adheres to each other, so after cooling it becomes hard and difficult to fold, and if it is folded in its hard state, the tatami surface will swell It was supposed to be.

In order to solve the problem, claim 1 of the present invention is a tool used in manufacturing an edgeless tatami mat, and includes two tools for cutting a groove for folding along a tatami floor and grooving a tatami surface . A rotary blade, a positioning guide that is in contact with the tatami floor and is capable of adjusting the groove cutting position of the rotary blade with respect to the tatami surface, and positioned substantially in the middle of the rotation center of the two rotary blades, and rotationally drives the two rotary blades has a handle and rotation transmitting means, a grooving tatami top edge grooved in tatami facing by moving along the two rotary blades tatami floor, grooving tatami lower surface edges, two The groove cutting tool is characterized by grooving the tatami surface by moving a positioning guide adjusted to the tatami floor thickness position with respect to the rotary blade along the upper edge of the tatami mat.

  According to claim 2 of the present invention, the lower end of the positioning guide is made to coincide with the lower end position of the moving wheel provided at the lower end of the tool body or the lower part of the tool body, and the lower end of the rotary blade has a predetermined dimension with respect to the virtual straight line connecting these lower end positions. The groove cutting tool according to claim 1, wherein the tool is located further downward.

  According to a third aspect of the present invention, the positioning guide lower end and the lower end position of the moving wheel provided at the lower end of the tool body or the lower part of the tool body are matched, and the dimension between the lower end position of the rotary blade with respect to a virtual straight line connecting these lower end positions. The groove cutting tool according to claim 1, wherein the tool is adjustable.

  A fourth aspect of the present invention is the method according to any one of the first to third aspects, wherein the step of fixing the tatami mat that has been subjected to the sewing or adhesion fixing process to the tatami floor on the heel side and the tatami mat are fixed. Using a groove cutting tool to perform groove cutting at positions where the upper edge of the tatami floor and the lower edge of the tatami floor abut, and thermoplasticity for bonding the tatami surface to the side of the tatami floor after groove cutting Applying the adhesive to the tatami floor or tatami mat surface, and after applying the tatami mat by means of moving up in the direction of the tatami floor side from the lower side of the tatami mat surface while being heated to a predetermined temperature with a built-in heater. The process of folding the tatami mat along the tatami floor at the edge of the upper surface of the floor, and after folding the tatami mat on the upper edge of the tatami floor, apply a thermoplastic adhesive to the back of the tatami floor to the tatami floor or tatami mat. The tatami mat from the outside of the tatami mat, at the height that matches the back position of the tatami mat after application And folding the tatami mat along the back surface of the tatami floor along the back surface of the tatami floor, and pressing and holding the tatami mat surface against the back surface of the tatami mat along the back surface of the tatami mat. It is a manufacturing method for tatami mats.

Claim 5 of the present invention is the air for cooling the thermoplastic adhesive from the means for pressing the tatami mat against the back of the tatami mat in the step of holding the tatami mat against the back of the tatami mat with the tatami mat along the back of the tatami mat. The method for producing an edgeless tatami mat according to claim 4, further comprising a step of discharging the rim.

  By using the groove cutting tool of the present invention, a groove for folding is cut on the tatami surface, and the tatami mat having good aesthetics can be manufactured in order to bend with the cutting groove. Then, the lower end position of the positioning guide and the lower end position of the moving wheel provided at the lower end of the tool body or the lower part of the tool body are matched, and the lower end of the rotary blade is positioned below a predetermined dimension with respect to a virtual straight line connecting these lower end positions. In the case of a thin tatami surface, the groove cutting tool has a depth that can be bent with good aesthetics in the case of a thin tatami surface. In order to cut, workability is good and it can be surely bent by a cutting groove.

  For groove cutting where the positioning guide lower end and the lower end position of the moving wheel provided at the lower end of the tool body or the lower part of the tool body are matched, and the dimension between the lower end position of the rotary blade can be adjusted with respect to the virtual straight line connecting these lower end positions In the tool, since the depth dimension of the cutting groove can be freely adjusted according to the thickness of the tatami surface, it is possible to manufacture a tatami mat with better aesthetics, although the labor for adjusting the groove depth increases. .

In the manufacturing method using the groove cutting tool described above, when folding the groove-cut tatami mat, the tatami mat is brought into contact with the folding unit tatami mat heated to a temperature at which it can be easily folded, so that the tatami mat can be folded easily. Even a thin edgeless tatami mat can be manufactured with good aesthetics.

It is a front view explaining the structure of the tool for groove cutting of this invention. It is a right front view explaining the structure of the tool for groove cutting of this invention. It is a top view explaining the structure of the tool for groove cutting of this invention. It is a side view explaining the outline | summary of the apparatus which manufactures an edgeless tatami. It is a side view explaining the process of manufacturing an edgeless tatami, and is in the state where the tatami floor was fixed with a floor presser. It is a side view explaining the process of manufacturing an edgeless tatami, and is in the state of performing grooving of the tatami floor upper edge on the tatami surface with a groove cutting tool. It is a side view explaining the process of manufacturing an edgeless tatami, and is in the state of performing grooving of the lower surface edge of the tatami floor on the tatami surface with a groove cutting tool. It is a side view explaining the process of manufacturing an edgeless tatami, and is a state which applies hot melt to the tatami surface part which adheres to a tatami floor side. It is a side view explaining the process of manufacturing an edgeless tatami, and is the state which folded the tatami surface upwards with the bending unit. It is a side view explaining the process of manufacturing an edgeless tatami, and is the state which pressed the tatami surface bent upwards with the bending unit to the tatami floor side. It is a side view explaining the process of manufacturing an edgeless tatami, and is a state which applies a hot melt in the state where a floor presser is raised and a tatami surface is folded to the back of the tatami floor with a folding plate. It is a side view explaining the process of manufacturing an edgeless tatami, and is a state which raised a floor end press and bent a tatami surface to the back of a tatami floor with a folding board. It is a side view explaining the process of manufacturing an edgeless tatami mat, and is a state where a floor end presser is lowered and a tatami surface is pressed and adhered to the back surface of the tatami floor. It is a side view explaining the process of manufacturing an edgeless tatami, and is a figure explaining the process of cooling a hot melt. It is a side view explaining the process of manufacturing an edgeless tatami, and it is a figure explaining the state where adhesion was completed and the device was returned to the initial position. It is a front view explaining the structure of another embodiment of the tool for groove cutting of this invention. It is a right front view explaining the structure of another embodiment of the groove cutting tool of the present invention. It is a top view explaining the structure of another embodiment of the tool for groove cutting of this invention. It is a figure explaining the conventional subject, (a) The state which the swelling of the tatami surface occurred, (b) It is a figure explaining the state which is not bent with good aesthetics.

  The borderless tatami mat manufacturing tool of the present invention will be described with reference to the drawings. This production tool is a groove cutting tool for cutting a bending groove at a predetermined depth with respect to the tatami mat. 1 is a front view as viewed from the side where a cutting rotary blade is installed, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a plan view of FIG. The groove cutting tool 1 of the present invention is provided with a cutting rotary blades 3, 4 and a positioning guide 5, a handle 6, and a handle / rotation transmission unit 7 in a base 2. In FIG. 1, since it is the same shape as the handle | steering-wheel and rotation transmission part 7 shown in FIG.

  The rotary blades 3 and 4 for cutting are attached to the rotary shafts 3a and 4a, and the rotary shafts 3a and 4a are locked to bearings attached to the base portion 2 so as not to move in the direction of the central axis of the rotary shaft. It is provided so that it can rotate freely. In the base portion 2, spur gears 3b and 4b are attached to the rotary shafts 3a and 4a.

  A spur gear 8 meshing with the spur gear 3b is provided by a rotating shaft 8a, and the rotating shaft 8a rotates in a state of being locked to a bearing provided on the base portion 2 so as not to move in the direction of the rotation axis center line. It is provided freely.

  Further, a spur gear 9 that meshes with the spur gear 4b is provided by a rotation shaft 9a, and the rotation shaft 9a is locked to a bearing provided on the base portion 2 so as not to move in the direction of the rotation axis center line. It is provided rotatably. The gear 8 and the gear 9 are meshed with each other.

  The end of the rotating shaft 8a is connected at the connecting portion 7a of the handle and rotation transmitting portion 7, and a flexible shaft (not shown) is connected to the connecting portion 7b at the other end. The handle and rotation transmission unit 7 can be configured by using a commercially available attachment that changes the rotation direction called an L-type driver. An electric drill (not shown) is connected to the flexible shaft, and the electric drill is used as a drive source.

  Since the handle and rotation transmission portion 7 is provided with a handle attachment portion, pins 11 and 12 are attached to the handle attachment portion by screwing, and a female screw and a base portion provided on the other end side of the pins 11 and 12 are provided. The holes 6 of the mounting plates 10a, 10b provided in 2 are aligned, and the handle 6 is fixed to one side by screwing the other side with a screw. With this configuration, the position of the handle 6 and the screw can be reversed and attached in the opposite manner to the state shown in FIGS.

  The positioning guide 5 is located on the base portion 2 side of the cutting rotary blades 3 and 4 when the corresponding portion of the tatami floor upper edge portion of the tatami mat is cut, or the end surface of the positioning guide 5 that contacts the tatami floor. And the rotary blades 3 and 4 for cutting are positioned so as to coincide with each other, and when cutting the corresponding portion of the lower surface edge of the tatami floor of the tatami mat, the tatami floor protrudes from the rotary blades 3 and 4 to the tatami floor side. The distance between the end surface in contact with the floor and the rotary blades 3 and 4 for cutting is movable so that the thickness of the tatami floor can be adjusted.

  The specific configuration will be described. The cutting blades 3 and 4 are provided below the base portion 2 between the cutting blades 4 and 4, a shaft 5a is provided, and a collar 5b is attached to the rear end of the shaft 5a. ing. The position of the end surface of the collar 5b on the positioning guide 5 side is a reference position indicating the thickness of the tatami when performing groove processing in plan view, and the end surface position of the memory 13 provided in the base portion 2 and the collar 5b is planar. It is the structure which can adjust the position of the cutting groove located in a tatami floor bottom part by match | combining visually. The shaft 5 a on which the positioning guide 5 is slid is positioned by being locked by a fixing screw 14. The portion of the shaft 5a with which the tip of the fixing screw 14 comes into contact can be reliably fixed by cutting a part of the shaft into a flat shape.

  The spur gear 8 and the spur gear 9 are the same gear, but the spur gear 3b and the spur gear 4b have a pitch circle diameter (PCD) larger than that of the spur gear 4b. The rotational speed of the cutting rotary blade 4 is increased.

  Since the rotation direction of the cutting rotary blade 3 and the cutting rotary blade 4 are reversed due to the configuration of the rotational drive transmission, for example, if the rotation direction of the cutting rotary blade 4 is counterclockwise in FIG. Since the rotational speed of the rotary blade 4 is faster, a force for moving the groove cutting tool 1 leftward in FIG. 1 is applied. The groove cutting tool 1 can be easily moved by grooving by using the difference in resistance at the time of grooving due to the difference in rotation speed of the rotary blade for the movement of the grooving tool 1. Can be reduced. The degree of rotation speed difference may be appropriately designed according to the size of the blade and the rotation speed of the blade.

  In FIG. 1, wheels 15 for facilitating the lateral movement of the groove cutting tool 1 are provided near the lower four corners of the base portion 2. And the lower end position of the four wheels 15 and the lower end position of the positioning guide 5 are set to coincide. The lower end positions of the cutting rotary blade 3 and the cutting rotary blade 4 are positioned lower than the lower end positions of the four wheels 15 and the lower end positions of the positioning guides 5 by a predetermined dimension. This predetermined dimension is the depth of the cutting groove.

  The tatami surface is 2 mm thin and 4.5 mm thick, and it is easy to bend whether it is thin or thick, and the depth of the cutting groove should be about 1.5 mm for finishing with good aesthetics. This dimension does not limit the invention. It may be changed to any one of about 1.0 to 1.8 mm. Further, a mechanism for adjusting and changing the depth of the cutting groove may be adopted, and an embodiment thereof will be described later.

Next, a method for manufacturing an edgeless tatami mat using the groove cutting tool 1 will be described.
The tatami surface folding apparatus for manufacturing a borderless tatami is located above the tatami mat 21 and the tatami mat 21 on which the tatami mat (tatami floor) is placed, and can be raised and lowered to hold and hold the tatami mat (tatami floor). 22 and a floor end presser 23. Reference numeral 24 denotes a laser marker for positioning the end of the tatami mat to be placed.

  The base 25 of the tatami surface folding apparatus is provided with a guide 26 for raising and lowering the elevating frame 27. The elevating frame elevates the guide 26 with four elevating guide bearings with respect to the guide 26 as shown in FIG. Hold it freely.

  The elevating frame 27 is provided with a folding unit 29 and a folding plate 30, and the bending unit 29 is movably provided on the pressing linear guide 31 so that the side of the tatami floor can be pressed. A spring 32 having one end fixed to the lifting frame is biased in the direction opposite to the direction in which the tatami is located. When pressing the tatami, the pressing cylinder 33 is driven and the rod is contracted to rotate the pressing arm 34, and the cam follower 34 a provided at the tip of the pressing arm 34 abuts the bending unit 29. Move and press in the tatami direction.

  The folding plate 30 is provided at a position coincident with the position of the upper surface of the folding unit 29, and the guide portion is sandwiched and held by a folding plate advance / retreat guide bearing 35 provided on the elevating frame 27 so as to advance and retreat in the direction in which the tatami is located. Has been.

  The elevating height adjusting handle 37 is a member for adjusting the elevating height of the elevating frame 27, and the shaft of the elevating height adjusting handle 37 with respect to the elevating frame 27 that is elevated by the elevating cylinder 39 provided on the base 25. The elevation height is adjusted by the contact of the tip. The reference position of the lift height adjustment handle 37 is adjusted by the lift height adjustment memory 38. For example, if the thickness of the tatami mat and the thickness of the tatami floor are 10 mm, the lift frame adjusted by the shaft of the lift height adjustment handle 37 when the lift height adjustment handle 37 is aligned with the memory 10 position of the lift height adjustment memory 38. 27, the folding plate 30 is positioned at the lower surface position of the tatami mat.

  A method for manufacturing a borderless tatami will be described. First, a tatami mat that has been subjected to heel processing (such as sew stitching or heel adhesion) is placed on a tatami surface folding apparatus. At this time, after being placed so that the edge of the upper surface of the tatami floor coincides with the position of the laser irradiated by the positioning laser marker 24, the floor press 22 is operated as shown in FIG. And the floor end presser 23 is lowered to fix the tatami mat.

  The thickness of the fixed tatami mat (the total thickness of the tatami mat and the tatami floor) is confirmed with a ruler or the like, and the elevating height adjusting handle 37 is adjusted according to the memory of the elevating height adjusting memory 38, and the elevating frame 27 lift position is adjusted.

  When the fixing of the tatami mat and the adjustment of the elevating position of the elevating frame 27 are completed, a groove for bending the tatami surface is cut with the groove cutting tool 1 as shown in FIG. The folding unit 29 is positioned at the standby position in a state where the upper surface of the folding unit 29 coincides with the position of the upper surface of the tatami table 21, and the folding unit 29 is longer than the tatami mat and has a heater 29a inside to mount the tatami mat. Before placing, the heater is energized and the temperature of the corner 29b where the tatami surface is bent is heated to 100-120 ° C. Since the melting temperature of the resin tatami mat is about 140 ° C., the resin tatami mat is softened without being melted and is easily bent. The temperature adjustment is set by a control operation unit (not shown).

  When using the groove cutting tool 1 to cut a groove on the edge of the upper surface of the tatami floor, the cutting rotary blade 3 and the cutting rotary blade 4 are positioned so as to be along the side surface of the tatami floor and the side surface of the tatami floor. Move to trace the groove. If you are unfamiliar with the work and are likely to damage the side of the tatami floor, adjust the positioning guide 5 to a position that matches the cutting rotary blade 3 and the cutting rotary blade 4, and use the positioning guide 5 to tatami the floor. It is better not to hurt. At the time of grooving, the bending unit 29 is located on the lower side of the tatami surface, and the wheels 15 and 15 positioned on the cutting rotary blade 3 and the cutting rotary blade 4 side and the positioning guide 5 are in contact with the tatami surface. Thus, the groove cutting by the cutting rotary blade 3 and the cutting rotary blade 4 can be reliably performed at a depth of a predetermined dimension. Since the rotational speed of the cutting rotary blade 4 is set faster at the time of cutting, the machining can be performed in a state in which it is easy to move in the traveling direction.

  When the processing of the groove at the edge on the upper surface side of the tatami floor is completed, the fixing screw 14 is loosened and the positioning guide 5 is set to the thickness of the tatami floor, for example, the thickness of the tatami floor of 5.5 mm. Align at 5 mm and adjust the position using the memory 13. When the position adjustment is completed, the fixing screw 14 is tightened so that the positioning guide 5 is not displaced.

  When the position adjustment of the positioning guide 5 is completed, the outer end surface of the positioning guide 5 is applied to the side surface of the tatami floor, and groove processing is performed on the lower surface side of the tatami floor as shown in FIG. In the state where the positioning guide 5 is in contact with the side surface of the tatami floor, the groove cutting tool 1 is moved so as to be parallel to the first groove described above, and the groove processing on the lower surface of the tatami floor is performed.

  When the groove cutting of the upper edge and the lower edge of the tatami floor is completed, the groove cutting tool 1 is temporarily placed in a place where it does not interfere with the work, and hot melt is applied to the entire side surface of the tatami floor as shown in FIG. Apply with hot melt application tool.

  After applying the hot melt, the elevating cylinder 39 is operated by turning on an operation switch (not shown) to raise the elevating frame 27. The raising / lowering frame 27 is regulated at the position regulated by the shaft of the raising / lowering height handle 38 and the ascent is stopped, and the ascending position coincides with the position of the upper surface of the folding unit 29, the position of the folding plate 30 and the position of the back surface of the tatami mat. The state (see FIG. 9). At this time, since the folding unit 29 is heated by the heater 29a, even the resin tatami surface is folded at a groove position on the upper surface edge of the tatami floor with good finish.

  Next, as shown in FIG. 10, the pressing cylinder 33 is operated to rotate the pressing arm 34, and the folding unit 29 is moved on the pressing linear guide 31 in the direction in which the tatami is positioned by the cam follower 34a. The folding unit 29 is moved so as to press the tatami mat against the tatami floor (moved from left to right in FIG. 10), and the tatami mat is pressed against the side of the tatami floor and bonded.

  As shown in FIG. 11, the floor end presser 23 is raised, and hot melt for bonding is applied to the tatami floor with a hot melt application tool. At this time, since the tatami is fixed by the floor presser 22, even if the floor presser 22 is raised, the tatami is held without being moved.

  When the application of the hot melt is completed, a signal is given to the machine by an operation switch or the like as shown in FIG. 12, the folding plate advancing / retracting cylinder 36 is operated to advance the folding plate 30, and the tatami surface is moved along the back surface of the tatami mat. Bend it. Then, while the tatami mat is folded with the folding plate 30, the floor end presser 23 is lowered to press the tatami mat to the tatami floor to ensure adhesion.

  This state is maintained for a certain period of time, but in order to shorten the time for adhesion of the tatami mat on the back side of the tatami mat, the floor end presser 23 is in the shape of a square pipe in the tatami floor or on the lower surface side contacting the tatami mat surface in the tatami length direction. A plurality of holes are provided, an air inlet is provided on a surface other than the lower surface of the floor end presser 23, for example, an upper surface, and compressed air is introduced from the air inlet of the floor end presser 23 by piping from a compressor or the like. The hot melt may be cooled by blowing air from the plurality of holes provided. (Refer to FIG. 14) In this case, a cushioning material having air permeability is attached to the lower surface of the floor end presser 23 so that the flow of compressed air can be smoothly discharged and can pass through the inside of the cushioning material to cool a wide range. Even better. In this embodiment, the time for discharging compressed air is about 3 to 10 seconds.

  Since the back surface of the tatami floor and the tatami mat are bonded, as shown in FIG. 15, the floor presser 22 and the floor end presser 23 are raised, the folding plate 24 and the folding unit 23 are retracted and returned to the initial position, and processing of one tatami mat is performed. Is completed. The above procedure is also performed on the other tatami end portion to complete the bonding of the tatami surface on the upper and lower tatami mats to complete one tatami mat.

  In said embodiment, although the form which made the lower end position of the wheel 15 and the positioning guide 5 correspond was demonstrated, a wheel is not essential. If the material has little friction with respect to the tatami surface, such as resin, the lower end position of the resin and the lower end position of the positioning guide may be matched by using the entire lower part of the base part 2 as a resin without using wheels, The same applies to an embodiment in which the groove depth to be cut described below can be adjusted.

  Next, an embodiment of a groove cutting tool in which the depth of the groove to be cut by the cutting rotary blades 3 and 4 can be adjusted will be described. 1 to 3, the same reference numerals as those in FIGS. 1 to 3 are attached to the same components, and the description is omitted. 16 is a front view, FIG. 17 is a right side view of FIG. 16, and FIG. 18 is a plan view of FIG. 16 illustrates the cutting rotary blades 3 and 4 with dotted lines to explain the difference from FIGS. 1 to 3, and illustrates that the base portion is divided as indicated by the solid line. .

  In the present embodiment in which the groove depth can be adjusted, the base portion is divided into the upper base portion 41, the lower base portion 42, and the base portion. The upper base portion 41 is provided with a cutting rotary blade 3 and a cutting rotary blade 4. The rotary shafts 3 a and 4 a and the spur gears 3 b and 4 b are the same as those described with reference to FIGS. The same applies to the spur gear 8, the rotary shaft 8a, the spur gear 9, and the rotary shaft 9a, and the same applies to the configuration of the handle / rotation transmission unit 7 and the drive source.

  The lower base portion 42 is provided with wheels 15 in the vicinity of the lower four corners as in FIGS. 1 to 3, the positioning guide 5 is provided, and the configuration of locking with the fixing screw 14 is the same.

16 and 18, the upper base portion 41 is screwed with the adjusting screw 43 in the lifting guide 41a, and the lower base portion 42 is screwed with the adjusting screw 43 in the lifting guide portion 42a. The structure which adjusts the dimension of the lower end position of the positioning guide 5 and the wheel 15, and the lower end position of the cutting blades 3 and 4 by adjusting the vertical position of the upper base part 41 and the lower base part 42 with the screw 43. It is said. With this configuration, the depth of the groove to be cut can be adjusted to a desired depth even if the thickness of the tatami mat is various. Further, it is preferable to prevent loosening by appropriately performing double nuts on the lifting guide 41a and the lifting guide portion 42a.

DESCRIPTION OF SYMBOLS 1 Groove cutting tool 2 Base part 3 Cutting rotary blade 3a Rotating shaft 3b Spur gear 4 Cutting rotary blade 4a Rotating shaft 4b Spur gear 5 Positioning guide 5a Shaft 5b Collar 6 Handle 7 Handle and rotation transmission part 8 Spur gear 8a Rotation Shaft 9 Spur gear 9a Rotating shaft 10a Mounting plate 10b Mounting plate 11 Pin 12 Pin 13 Memory 14 Fixing screw 15 Wheel 21 Tatami bed 22 Floor presser 23 Floor end presser 24 Positioning laser marker 25 Base 26 Guide 27 Lifting frame 28 Lifting guide bearing 29 Bending unit 29a Heater 29b Corner 30 Bending plate 31 Pressing linear guide 32 Spring 33 Pressing cylinder 34 Pressing arm 34a Cam follower 35 Bending plate advancing / retreating guide bearing 36 Bending plate advancing / retreating cylinder 37 Lifting height adjustment handle 38 Lifting height adjustment Adjusting memory 39 Elevating cylinder 41 Upper base part 42 Lower base part 43 Adjustment screw

Claims (5)

A tool used when manufacturing an edgeless tatami mat,
Two rotary blades for cutting grooves for folding along the tatami floor and grooving the tatami surface;
A positioning guide that is in contact with the tatami floor and is located approximately in the middle and below the rotation center of the two rotary blades, which makes it possible to adjust the groove cutting position of the rotary blades relative to the tatami surface.
A handle and rotation transmission unit for rotating and driving the two rotary blades;
Have
The grooving of the tatami upper surface edge is grooved on the tatami surface by moving two rotary blades along the tatami floor,
Groove machining on the lower edge of the tatami mat is characterized by grooving on the tatami surface by moving a positioning guide adjusted to the tatami floor thickness position with respect to the two rotary blades along the upper edge of the tatami mat. tool. The lower end of the positioning guide is aligned with the lower end position of the moving wheel provided at the lower end of the tool body or the lower part of the tool body, and the lower end of the rotary blade is positioned below a predetermined dimension with respect to a virtual straight line connecting these lower end positions. The groove cutting tool according to claim 1. The lower end position of the positioning guide and the lower end position of the moving wheel provided at the lower end of the tool body or the lower part of the tool body are matched, and the dimension of the lower end position of the rotary blade can be adjusted with respect to a virtual straight line connecting these lower end positions. The groove cutting tool according to claim 1. Fixing the tatami mats that have been sewn or bonded to the tatami floor on the heel side; and
After fixing the tatami mat, the groove cutting process is performed at a position where the tatami floor upper surface edge and the tatami floor lower surface edge are in contact with each other using the groove cutting tool according to any one of claims 1 to 3. Process,
Applying a thermoplastic adhesive to the tatami floor or tatami mat for bonding the tatami mat to the side of the tatami mat after grooving;
After the application, with the heater built-in and heated to a predetermined temperature, the tatami mat is moved along the tatami floor at the upper edge of the tatami floor by means of moving from the lower end of the tatami mat to the side of the tatami floor. Bending to
Applying a thermoplastic adhesive to the tatami floor or the tatami mat for bonding the tatami mat to the back of the tatami mat floor after folding the tatami mat floor top edge,
After the application, at a height corresponding to the back surface position of the tatami mat, moving from the outside of the tatami mat to the tatami mat direction and folding the tatami mat along the back surface of the tatami floor along the back surface of the tatami mat, and
Pressing and holding the tatami mat on the back of the tatami mat along the tatami mat surface,
A method for manufacturing an edgeless tatami mat. A step of discharging air for cooling the thermoplastic adhesive from means for pressing the tatami mat against the back of the tatami mat in the step of pressing and holding the tatami mat against the back of the tatami mat with the tatami mat along the back of the tatami mat. 4. A method for producing an edgeless tatami according to 4.

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