JP2018103313A - Slitter device for tatami mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slitter device capable of easily forming a slit groove, which does not penetrate a tatami mat, in the tatami mat thicker than a film and the like.SOLUTION: A slitter device for a tatami mat includes: a drive roller for launching the tatami mat; a driving source for driving the drive roller; a press roller for pressing a tatami, which is loaded on a stand, against the drive roller; and a cutting blade for forming a slit with a depth smaller in dimension than the thickness of the tatami mat. A distance between a point of contact between the drive roller and the tatami mat and a cutting edge of the cutting blade is set smaller in dimension than the thickness of the tatami mat.SELECTED DRAWING: Figure 2

Description

The present invention relates to a slitter device for a tatami floor that forms a slit on one surface of the tatami floor.

As a tatami core material (tatami floor), a fiber board configured by mixing a wood fiber with an adhesive, heating and pressurizing it, and forming it into a plate shape is often used. A fiber board with a density less than 0.35 g / cm ³ is called an insulation board. A fiber board having a density of 0.35 g / cm ³ or more and less than 0.35 g / cm ³ is called a medium density fiber board. A fiber board having a density of 0.80 g / cm ³ or more is called a hard board. These fiber boards are frequently used as core materials for tatami mats.

The tatami mat may be used in combination with floor heating, or the moisture content of the core material may change over time, causing the thin tatami to warp. This tendency is particularly strong in tatami mats including thin tatami mats.

In order to prevent tatami mat warpage, it is known to form a groove in the core material. For example,
Patent Document 1 describes a tatami core material having a plurality of grooves on the surface of a medium density fiber board having a predetermined density. By providing the medium density fiber board with grooves, the board absorbs and releases moisture. It is said that it is possible to prevent the occurrence of warpage or the occurrence of madness by repeating the above.

On the other hand, devices as disclosed in Patent Documents 2 to 4 have been proposed as devices for cutting thin objects such as sheets and tatami mats. The devices of Patent Document 2 and Patent Document 3 are provided with a plurality of cutting blades, the film is cut into a predetermined width by the blades, and a thin film is continuously formed with respect to the width of the film before cutting. Manufacturing. In the apparatus of Patent Document 4, unwoven portions at both ends of the tatami surface are cut with a rotary blade.

JP 11-293898 A Japanese Patent Laid-Open No. 9-103992 JP 2003-103492 A JP 7-214497 A

Conventionally, in order to form a plurality of grooves in the core material, a plurality of grooves are formed using a blade such as a knife. However, when a plurality of grooves are formed in the core member with a blade such as a knife, there is a problem that the operation is complicated and the efficiency does not increase. On the other hand, devices as described in Patent Documents 2 to 4 are known. However, these apparatuses cut a thin object such as a film or a tatami surface, and are not suitable for forming a slit in a thick tatami floor.

An object of this invention is to provide the slitter apparatus which can form easily the slit groove | channel which does not penetrate a tatami floor with respect to a tatami floor thick compared with a film etc. in a tatami floor.

Tatami floor comprising a driving roller for sending out the tatami floor, a driving source for driving the driving roller, a pressing roller for pressing the tatami floor against the driving roller, and a cutting blade for inserting a slit groove having a depth smaller than the thickness of the tatami floor. This is achieved by a slitter device for a tatami floor in which the distance between the contact point of the driving roller and the tatami floor and the cutting edge of the cutting blade is smaller than the thickness of the tatami floor. Since the distance between the contact point of the drive roller and the tatami floor and the cutting edge of the cutting edge is less than the thickness of the tatami floor so long as the slit does not penetrate the thickness of the tatami floor, the recess does not penetrate the thickness direction of the tatami floor. The groove can be efficiently formed on one side of the tatami floor. Moreover, since the tatami floor is pressed against the drive roller by the presser roller, the presser roller can be prevented from idling with respect to the tatami floor.

The cutting blade is preferably a rotating blade and is not driven. When the tatami floor is supplied to the rotary blade, the rotary blade rotates together with the tatami floor to form slit grooves in the tatami floor. As a result, a mechanism for driving the rotary blade can be omitted, and the apparatus configuration can be simplified.

The above apparatus preferably includes a plurality of cutting blades, and is configured to be capable of adjusting the distance between one cutting blade and another cutting blade disposed adjacent thereto. Thereby, it becomes possible to adjust easily the space | interval of the slit groove formed in a tatami floor according to the curvature ease of a tatami floor and the dimension of a tatami floor.

It is preferable that the cutting blade is configured to be displaceable in a direction approaching the tatami floor to be supplied or a direction away from the tatami floor to be supplied. Thereby, it becomes possible to form a slit groove according to the thickness of the tatami floor or the desired depth of the slit groove.

It is preferable that the press roller presses the supplied tatami floor against the drive roller using its own weight. Thus, the pressing mechanism can be omitted or simplified to simplify the device configuration.

The presser roller is supported by a swing shaft, and is preferably configured to be movable by swinging between a presser position for pressing the tatami floor and a retracted position. With such a configuration, for example, when the cutting blade is replaced, the press roller can be swung and moved to the retracted position. In this way, since the presser roller does not interfere with the cutting blade replacement work, the cutting blade can be easily replaced.

The presser roller is rotatably supported on one end side of the rotating member, and a stopper for restricting the swinging of the rotating member is disposed on the other end side of the rotating member. It is preferable that the moving shaft be provided between the stopper and the presser roller. With such a configuration, the swinging of the presser roller is regulated by the stopper, so that it is possible to prevent the tatami floor from being excessively pressed by the presser roller.

It is possible to provide a slitter device capable of easily forming a slit groove having a desired depth in a tatami floor with respect to tatami floors having different thicknesses.

It is a perspective view which shows an example of the tatami floor which formed the some slit groove | channel. It is a right view which shows one Embodiment of a slitter apparatus. It is a left view of the slitter apparatus of FIG. It is a top view of the slitter apparatus of FIG. It is an enlarged view of A part of the slitter apparatus of FIG. It is the right view which isolate | separated and showed the presser roller which comprises the slitter apparatus of FIG. 1, a rotation member, a drive roller, and a pressing assistance tool. It is the fragmentary sectional view which looked at the A section of the slitter apparatus of FIG. 2 from the front side. It is the fragmentary sectional view which expanded and showed the B section of the slitter apparatus of FIG. It is a left view which shows the state which rocked the presser roller of the slitter apparatus of FIG. 2 to the retracted position. FIG. 10 is an enlarged view of a portion C in FIG. 9. It is the fragmentary sectional view which looked at the cutting blade from the plane side.

Hereinafter, a tatami floor having slit grooves and a tatami floor slitter apparatus according to an embodiment of the present invention will be described with reference to the drawings.

The slitter apparatus 1 of this embodiment is an apparatus for forming the slit groove | channel which does not penetrate the tatami floor 9 in one surface of the tatami floor 9, as shown in FIG. According to the slitter device 1 of the present embodiment, as shown in FIG. 1, for example, a lattice-shaped slit groove comprising a plurality of substantially parallel slit grooves 91 and a plurality of substantially parallel slit grooves 92 intersecting with them. 90 can be formed. Although details will be described later, in order to form a lattice-like slit groove, the lattice-like slit groove can be easily formed by passing the tatami floor twice through the slitter apparatus 1 of the present embodiment. Although not shown, it is also possible to form a plurality of substantially parallel slit grooves that are not grid-like.

If a tatami mat is used, the tatami floor 9 may warp due to a change in temperature or a change in moisture content. This tendency is particularly strong for tatami mats including thin tatami mats. Since the tatami floor 9 gives the tatami as a core material, when the tatami floor 9 warps, the entire tatami mat including the tatami mat 93 naturally warps. As a countermeasure, it is possible to prevent the entire tatami from warping by forming slit grooves in the tatami floor 9. This is considered to be because the warpage of the tatami floor is divided at the slit groove portion, so that the warp of the entire tatami mat is prevented.

As shown in FIG. 1, in order to form a plurality of slit grooves on the tatami floor 9, as described above, it was necessary to manually form the slit grooves using a blade such as a knife. Since the tatami floor 9 is a hard material, it is very complicated to manually form a plurality of slit grooves. For example, the tatami floor is composed of fiber boards such as insulation boards, medium density fiber boards, and hard boards. If the slitter apparatus 1 of this embodiment is used, a slit groove | channel can be formed in the tatami floor 9 which is such a hard material simply and in a short time.

As shown in FIGS. 2 to 4, the slitter device 1 of the present embodiment includes a table 11 on which the tatami floor 9 is placed, a drive roller 12 that sends out the tatami floor 9, a drive source 15 that drives the drive roller 12, A pressing roller 13 that presses the tatami floor 9 against the driving roller 12, a cutting blade 14 that forms a slit groove having a depth smaller than the thickness of the tatami floor 9, and a plurality of legs 16 that support the apparatus 1 are provided. Hereinafter, the structure of each part of the slitter apparatus 1 of this embodiment is demonstrated. In addition, in FIG. 1 etc., the shape of the member hidden by the wall surface 17 mentioned later was shown with the broken line.

The table 11 on which the tatami floor 9 is placed functions as a work table that supports the tatami floor 9 when a slit groove is formed in the tatami floor 9 or when the tatami floor 9 is supplied to or discharged from the cutting blade 14. As shown in FIG. 4, the base 11 of the device 1 is rectangular in plan view, and provides a large flat surface to the tatami floor 9 that forms the slit grooves. As shown in FIG. 2, the base 11 is provided with a plurality of rectangular through holes 121 a, 121 b, 121 c with respect to the direction intersecting the direction in which the tatami floor 9 is supplied. In FIG.2 and FIG.4, the direction which supplies a tatami floor was shown with the arrow. In the apparatus 1 of the present embodiment, the direction in which the tatami floor 9 is supplied corresponds to the longitudinal direction of the table 11 as shown in FIG. The upper end part of the drive roller 12 mentioned later protrudes from this through-hole. By causing the upper end of the drive roller 12 to slightly protrude from the through hole, the tatami floor 11 placed on the table 11 can reliably contact each drive roller 12. Thereby, it is possible to prevent the tatami floor 9 from staying on the table 11 and smoothly convey it.

As shown in FIG. 4, both side surfaces of the base 11 on the short side are both released. For this reason, when the operator places the tatami floor 9 on the table 11 or when the tatami floor discharged from the apparatus 1 is collected, the operator can easily access the table 11. On the other hand, a pair of side walls 17 are provided in the longitudinal direction of the base 11 as shown in FIG. The side wall 17 supports a driving roller 12, a pressing roller 13, a cutting blade 14, and the like which will be described later. The side wall 17 functions as a support member for members such as the driving roller 12 and also has a function of guarding the operator's body and wearing clothes from being caught in the rotating shafts such as the cutting blade 14 and the driving roller 12. Demonstrate. A plurality of leg portions 16 are fixed to the side wall 17. And the leg part 16 supports the base 11 and fixes the position so that the height of the base 11 becomes a position where it is easy for an operator to work.

The driving roller 12 is a member for conveying the tatami floor 9 placed on the table 11. As described above, the upper end portion of the driving roller 12 protrudes from the table 11, the upper end portion of the driving roller 12 contacts the tatami floor 9, and the surface of the driving roller 12 is locked to the tatami floor 9 to be tatami floor 9. Send out. An antislip material is wound around the peripheral surface of the drive roller 12. Since the friction coefficient is increased by the anti-slip material, the peripheral surface of the drive roller is easily hooked to the tatami floor 9. Examples of the anti-slip material include elastomers such as synthetic rubber and vulcanized rubber.

In said apparatus 1, the several drive roller 12 is arrange | positioned in parallel in the direction which cross | intersects a longitudinal direction. A first driving roller 12a, a second driving roller 12b, and a third driving roller 12c are provided in this order from one side of the device 1 to which the operator feeds the tatami floor 9 toward the other side from which the tatami floor is discharged. Both end portions of each drive roller are supported so as to be rotatable with respect to the wall surface 17 via bearings disposed on the wall surface 17. Each drive roller has a cylindrical shape.

As shown in FIG. 2, the drive roller 12 is connected to the drive source 15, and each drive roller 12 rotates in the same direction by the power of the drive source 15. The direction in which each drive roller 12 rotates is the discharge side of the tatami floor 9. In the apparatus 1 of the present embodiment, as shown in FIG. 2, the driven part 121a of the first drive roller 12a and the drive part 15a of the drive source 15 are connected via a power transmission part 18a. The power of the drive source 15 is transmitted to the first drive roller 12a via the drive unit 15a of the drive source 15, the power transmission unit 18a, and the driven unit 121a provided on one end side of the first drive roller 12a. Examples of the drive source 15 include a motor and an engine. Examples of the drive unit 15a of the drive source 15 and the driven unit 121a of the first drive roller 12a include a pulley and a sprocket. Examples of the power transmission unit 18a include a chain and a belt. Similarly, for the driving unit 121b of the first driving roller 12a, the driven unit 122b of the second driving roller 12b, the driving unit 122a of the second driving roller 12b, and the driven unit 123a of the third driving roller 12c, which will be described later, for example, a pulley And sprockets can be used. Similarly, a chain or a belt can be used for the second power transmission unit 18b and the third power transmission unit 18c.

As shown in FIG. 3, the power transmitted to the first driving roller 12a connects the driving unit 121b provided on the other end side of the first driving roller 12a, and the driving unit 121b and the second driving roller 12b. Is transmitted to the second drive roller 12b via the second power transmission unit 18b that performs the rotation and the driven unit 122b disposed on the other end side of the second drive roller 12b.

As shown in FIG. 2, the power transmitted to the second drive roller 12b includes a drive unit 122a provided on one end side of the second drive roller 12b, and a driven unit 123a of the drive unit 122a and the third drive roller 12c. Is transmitted to the third drive roller 12c via the third power transmission unit 18c that couples the second drive unit 12c and the driven unit 123a disposed on one end side of the third drive roller 12c.

As described above, the first drive roller 12a and the second drive roller 12b are coupled by the second power transmission unit 18b, and the second drive roller 12b and the third drive roller 12c are coupled by the third power transmission unit 18c. . Therefore, the rotation speeds of the first drive roller 12a, the second drive roller 12b, and the third drive roller 12c are in a synchronized state. As a result, the tatami floor 9 can be smoothly conveyed until it is supplied to the apparatus 1 and discharged.

The presser roller 13 presses the tatami floor 9 supplied to the apparatus 1 against the drive roller 12. Thereby, it is possible to prevent the presser roller 13 from idling with respect to the tatami floor 9. As described above, when the tatami floor 9 is fixed to the tatami floor 9 and supplied to the slitter device 1, when the presser roller 13 is idled, the fibers of the grass forming the tatami surface may be damaged by the roller. Even when a tatami floor to which the tatami table is not fixed is supplied to the apparatus 1, the tatami floor may be damaged if the presser roller 13 is idled. This tendency is particularly noticeable when the roller rotates in a direction intersecting with the fibers of the grass. By preventing idling, it is possible to prevent such damage from occurring.

In the apparatus 1 of the present embodiment, as shown in FIG. 2, a plurality of press rollers 13 are arranged in parallel in a direction crossing the longitudinal direction. An operator includes a first presser roller 13a and a second presser roller 13b in order from one side to the other side of the device 1 that feeds the tatami floor 9. Both end portions of the presser roller 13 are supported so as to be rotatable with respect to one end side of the rotating member 19 through bearings disposed on a pair of rotating members 19 described later. Each presser roller 13 has a cylindrical shape. An anti-slip material may be laminated on the circumferential surface of the presser roller 13 in the same manner as described above.

In the device 1 of the present embodiment, each press roller 13 is configured as a heavy object. For this reason, the tatami floor 9 supplied to the apparatus 1 is pressed against the driving roller 12 by the weight of the roller itself so that the presser roller 12 does not idle with respect to the tatami floor 9. For this reason, it is not necessary to strongly press the presser roller 12 against the drive roller 12 using air pressure or hydraulic pressure. That is, the device configuration can be simplified. As will be described later, the pressing aid 21 may be used, but even in that case, it may be auxiliary, and the pressure applied to the tatami floor by the pressing aid 21 can be reduced.

As shown in FIG. 9 and the like, both end portions of the press roller 13 are accommodated in the concave portions 172 provided on the wall surface 17 at the press position. When the press roller 13 presses the tatami floor 9, the edge of the recess 172 when the press roller 12 is in the press position so that the recess 172 does not interfere with both ends of the press roller 13 and the press is prevented. Is configured not to interfere with both ends of the presser roller 13.

Each rotating member 19 includes a swing shaft 20 between one end side and the other end side, and is supported by the wall surface 17 through the swing shaft 20 so as to be swingable. The shape of each rotating member 19 is a plate-like long member, but may be a rod-like member. The other end side of such a long rotating member is connected to the pressing aid 21 as shown in FIG. As described above, the pressing roller 13 is rotatably supported on one end side of the rotating member 19.

As shown in FIGS. 1, 5, 6, and 7, the pressing assisting tool 21 of the device 1 includes an air cylinder and a piston that is retractable with respect to the air cylinder. As shown in FIGS. 1 and 6, the base end portion of the air cylinder is supported by the wall surface 17 so as to be swingable via a bracket 211 and a swing shaft 212. And the front-end | tip part of a piston is connected to the other end side of the rotation member 19 through the connection tool 213 so that attachment or detachment is possible. As shown in FIG. 7, the connector 213 includes a base portion 213a connected to the piston shaft, a first wall surface 213b protruding from the base portion in the extending direction of the piston shaft, and a second wall surface 213c opposed thereto. It is comprised from the latching shaft 213d spanned between the 1st wall surface 213b and the 2nd wall surface 213c.

On the other hand, on the other end side of each rotating member 19, there is a recess 191 (FIG. 10) corresponding to the latching shaft 213d and a lock piece 192 that is pivotally supported at a position close to the swinging shaft 20 side with respect to the recess 191. And are arranged. The lock piece 192 is supported by the turning member 19 so as to be rotatable by the turning shaft 193. The lock piece 192 is latched with respect to the latching shaft 213d so that the latching shaft 213d does not fall off from the recess 191 in a state where the latching shaft 213d of the coupling portion 213 is latched with the concave portion 191 of the rotating member. Has a shape that can be. As shown in FIGS. 5 and 7, the locking piece 192 is hooked to the hooking shaft 213 d so that the rotating shaft 19 and the piston shaft of the pressing assisting tool 21 are connected so that they do not fall off. can do.

As shown in FIG. 6, by supplying compressed air to the base end side of the air cylinder via the supply path 214, the piston can be extended and the other end side of the rotating member 19 can be pushed upward. it can. The rotating member 19 is supported so as to be swingable with respect to the wall surface 17 by a swing shaft 20 between one end side and the other end side. For this reason, as shown by the arrow in FIG. 6, when the other end side of the rotating member is pushed up, one end side of the rotating member 19 is pushed downward. Therefore, by extending the air cylinder, the pressing force of the presser roller 13 disposed on one end side of the rotating member can be assisted. This makes it possible to more effectively prevent the presser roller 13 from idling with respect to the tatami floor.

In the apparatus 1 of the present embodiment, an air cylinder and a piston are used as a pressing aid. In addition, a hydraulic cylinder and a piston may be used as a pressing aid, or an elastic body such as a spring may be used.

By the way, when exchanging the cutting blade 14 which will be described later, the pressing cylinder 13 may interfere with the work. In the apparatus 1 according to the present embodiment, the presser roller 13 is supported by the swing shaft 20. Therefore, as shown in FIGS. 9 and 10, the presser that presses the tatami floor 9 by swinging the presser roller 13. The presser roller 13 can be moved between the position and the retracted position. As a result, the cutting blade 14 can be easily replaced.

When the pressing roller 13 is moved to the retracted position, the holding roller 24 (FIG. 10) provided in the vicinity of the rotating shaft of the pressing roller 13 on one end side of the rotating member 19 is gripped and manually pressed. May be moved to the retracted position. The gripping portion 24 is fixed to one end side of the rotating member 19 via a bracket 25 having a through hole that is fitted into the rotating shaft of the presser roller 13 disposed on one end side of the rotating member 19. The bracket 25 and the rotating member 19 may be fixed by screwing or welding.

As described above, the other end side of the rotating member 19 is connected to the pressing assisting tool 21. When moving the presser roller 13 to the retracted position, if the bottom dead center of the pressing assisting tool 21 is reached, the rotating member 19 is prevented from further swinging. For this reason, when the presser roller 13 is moved to the retracted position, as shown in FIG. 10, the latching of the lock piece 192 and the latching shaft 213d is released, and the pressing assisting tool 21 and the rotating member 19 are released. It is good to release the connection. Since the pressing assisting tool 21 is swingably supported by the wall surface 17 as described above, one end side does not interfere with the pressing assisting tool 21 when the rotating member moves to the retracted position by swinging. Can be evacuated.

The device 1 of this embodiment includes a stopper 22 that restricts the pivoting member 19 from excessively swinging with respect to the retracted position side. The stopper 22 is a block-like member, and protrudes from the edge of the wall surface 17 onto a track on which the rotating member 19 swings as shown in FIG. The surface of the block on the rotating member side is an inclined surface along the shape of the rotating member. The inclined surface of the stopper 22 contacts the rotating member 19 that has swung along the edge of the wall surface 17. Thereby, it is possible to restrict the swinging member 19 from excessively swinging with respect to the retracted position side.

Furthermore, the apparatus 1 of this embodiment is provided with the 2nd stopper 23 which controls that the presser roller 13 rocks | swivels excessively with respect to the direction which presses a tatami floor. As shown in FIGS. 5 and 7, the stopper 23 is disposed on the wall surface 17 around the other end side of the rotating member 19. More specifically, as shown in FIG. 7, the stopper 23 is composed of a male screw, and is placed behind the upper end surface of the wall surface 17 in a state where the male screw is inserted into a through hole provided in the upper end surface of the wall surface 17. Screwed onto the fixed female screw 231. The lower end of the stopper 23 protrudes from the lower end of the female screw 231 and comes into contact with a part of the rotating member 19 (swing restricting piece 194). The swing restricting piece 194 swings in synchronization with the other end of the rotating member 19, and the upper end of the swing restricting piece 194 comes into contact with the lower end of the stopper 23, so that the presser roller 13 swings in the direction of pressing the tatami floor 9. Prevent it from moving too much. By screwing the male screw constituting the stopper 23, it is possible to set a lower limit for the swing regulating piece 194 to swing upward. Since the turning member 19 is supported by the swing shaft 20 in the middle thereof, as shown by the arrow in FIG. 5, if the swing limit on the other end side of the turning member 19 is set downward, the presser roller The swing limit on one side of the rotating member on which the shaft 13 is pivotally supported can be moved upward. Thereby, for example, according to the thickness and strength of the tatami floor, it is possible to change the pressing force by changing the distance between the pressing roller 13 and the driving roller 12.

The distance between the pressing roller 13 and the driving roller 12 may be changed depending on the thickness of the tatami floor and the material of the tatami floor. For example, if the tatami floor is easy to be crushed by pressure, the pressing force may be reduced, and if it is slippery, the pressing force may be increased. In the case of a thick tatami floor, the distance between the presser roller 13 and the drive roller 12 may be increased. In the case of a thin tatami floor, the distance between the presser roller 13 and the drive roller 12 may be decreased.

As shown in FIG. 4, the apparatus 1 of the present embodiment includes a plurality of cutting blades 14 along the short direction of the table 11. The cutting blade 14 is disposed above the second drive roller 12b. As shown in FIGS. 4 and 11, the plurality of cutting blades 14 are fixed to a support tool 25 supported so as to be movable up and down with respect to the wall surface 17. Therefore, when the support tool 25 is moved up and down by operating the operation unit 26, the plurality of cutting blades 14 also move up and down integrally with the support tool 25.

As illustrated in FIG. 8, the operation unit 26 includes a handle including a gripping unit. As will be described later, a male screw 27 is fixed to the operation unit 26. Further, annular support members 271 and 272 that are not cut into a plurality of screw grooves with a space corresponding to a screw insertion portion 171 described later are fixed to the male screw 27 by welding. Therefore, when the operation unit 26 is rotated, the male screw 27 and the support members 271 and 272 rotate integrally.

The support tools 25 have a pair of relationships, and one support tool 25 is supported on one wall surface 17, and the other support tool 25 is supported on the other wall surface 17. The support 25 includes a cutting blade fixing portion 251 extending downward from above the wall surface 17 and a screw insertion portion 252 extending from the upper end side of the fixing portion toward the outside of the device 1. A female screw 253 is fixed to the back surface of the screw communicating portion 252 by welding. A male screw 27 that rotates integrally with the operation unit 26 is screwed into the female screw 253. When the operating portion 26 is rotated, the male screw 27 rotates together with the operating portion 26, and the female screw 253 screwed to the male screw 27 moves up and down integrally with the support 25 including the screw insertion portion 252. Accordingly, the cutting blade 14 can be displaced in a direction approaching the tatami floor 9 or a direction away from the tatami floor 9. When operating the cutting blade 14, it is desirable that the operation amounts of the pair of operation units 26 be the same.

The distal end portion of the male screw 27 fixed to the operation unit 26 is supported to be rotatable with respect to the wall surface 17. Specifically, in a state where the leading end portion of the male screw 27 is inserted into the screw insertion portion 171 provided on the wall surface 17, two pairs of annular support members 271 so as to sandwich the screw insertion portion 171 from above and below, 272 is fixed to the male screw 27. No thread groove is formed in the inner peripheral surface of the second screw insertion portion 171, and the male screw 27 is rotatably supported by the two pairs of support members 271 and 272 with respect to the screw insertion portion 171. Therefore, when the operation unit 26 is operated, the male screw 27 itself rotates without moving up and down. On the other hand, since the female screw 253 is screwed to the male screw 27 in the support tool 25, when the operation unit 26 is operated, the female screw 253 and the support tool 25 are moved up and down integrally with the rotation of the male screw 27. . Accordingly, as indicated by an arrow in FIG. 8, the distance D (FIG. 8) between the contact point between the driving roller 12 and the tatami floor 9 and the tip of the cutting edge 14 depends on the thickness E (FIG. 1) of the tatami floor. Can be changed.

As shown in FIG. 11, the cutting blade 14 fixes a screw 141 that fixes the cutting blade 14, a bearing 142 that rotatably supports the rotating shaft of the cutting blade 14, and an end portion of the bearing 142 to the bracket 143. A screw 144; a bracket 143 having a through-hole that can be inserted into the shaft 145 whose both ends are fixed to the support 25; and a shaft 145 that supports the bracket 143 so as to be movable in the extending direction thereof. The bracket 143 is fixed to the support 25 by a screw 146 that fixes the position of the bracket 143 with respect to the shaft 145. The shaft 145 functions as a scissors for supporting the cutting blade 14 and does not rotate itself. As described above, the cutting blade 14 includes a rotation shaft (not shown) protruding from the flat surface of the cutting blade 14, and is configured to be rotatable by inserting the shaft through the bearing 142. When replacing the cutting blade 14, it is possible to easily replace the cutting blade by loosening the screw 141 and extracting the rotating shaft from the bearing 142.

The pitch of the slit grooves formed in the tatami floor 9 can be changed by loosening the screw 146 screwed to the bracket 143 of the cutting blade 14 and moving the bracket 143 along the shaft 145. Accordingly, the pitch of the slit grooves can be freely adjusted according to the ease of warping of the tatami floor 9. That is, the distance between one cutting edge and another cutting edge arranged next to it can be adjusted. It is also possible to adjust the number of slit grooves by inserting the bracket 143 provided with the cutting blade 14 from the end of the shaft 145 and adding or removing the cutting blade 14.

In the apparatus 1 of this embodiment, the cutting blade 14 is comprised from the circular rotary blade, and is not driven. Since the tatami floor 9 is transported by the driving roller 12, the tatami floor can be torn while being rotated with the tatami floor to which the rotating blade is transported without driving the rotating blade. By omitting the driving mechanism of the rotary blade, the apparatus configuration can be simplified. Further, in this configuration, the rotary blade forms a slit in the tatami floor while rotating with the tatami floor along the direction in which the tatami floor is supplied. Compared to the case where the rotary blade is rotated in the direction opposite to the direction in which the tatami is conveyed, when the tatami floor is torn while the rotary blade is rotated, the resistance when supplying the rotary blade to the tatami is reduced. It becomes small and can improve operability and work efficiency. Furthermore, in the apparatus 1 of this embodiment, since the cutting blade is a rotary blade, when the tatami is torn, the cutting blade is not easily caught on the tatami floor and blade spillage is less likely to occur. Thereby, the operability and the durability of the blade can be improved, and the working efficiency can be improved.

In order to form slit grooves in the tatami floor 9 using the slitter apparatus 1 of the present embodiment, the following is performed. 2 and 4, as indicated by arrows, the operator places the tatami floor 9 on the table 11 on one side of the apparatus 1 with the back side of the tatami floor 9 to which the tatami mat is fixed facing up. Then, the tatami floor 9 is sent out between the first driving roller 12a and the first pressing roller 13a. Then, the tatami floor 9 is conveyed toward the plurality of cutting blades 14. The tatami floor 9 is drawn in the direction of the plurality of cutting blades 14 by the second drive roller 12b, and a plurality of slit grooves are formed on the back surface of the tatami floor 9. The tatami floor on which the plurality of slit grooves are formed is supplied between the third drive roller 12c and the second presser roller 13b by the second drive roller 12b. The tatami floor drawn between the third driving roller 12c and the second pressing roller 13b by the third driving roller 12c is discharged from the other side of the apparatus by the third driving roller 12c.

As shown in FIG. 1, in order to form a lattice-like slit groove, after passing the tatami floor 9 through the device 1 as described above, the vertical slit groove formed on the tatami floor is used by the operator. The tatami floor may be passed through the apparatus again in a state in which the tatami floor is rotated so as to be in the horizontal direction when viewed from above.

As described above, in order to form the slit groove on the tatami floor using the slitter device 1 of the present embodiment, the operator moves the tatami floor from the one side of the device to the first drive roller 12a and the first presser roller 13a. You just need to send it out. After that, the slitter device 1 automatically forms a slit groove and discharges the tatami floor from the other side of the device 1. The operator may collect and accumulate the tatami floors discharged from the other side of the apparatus. Thereby, a plurality of slit grooves can be quickly and easily formed on the tatami floor. In addition, the tatami floor supplied to the apparatus 1 may be supplied to the apparatus 1 in a fixed state with the tatami surface, or the tatami floor may be supplied to the apparatus 1 alone.

DESCRIPTION OF SYMBOLS 1 Slitter apparatus 9 Tatami floor 12 Drive roller 13 Presser roller 14 Cutting blade 15 Drive source 19 Rotating member 20 Oscillating shaft 23 Stopper

Claims (7)

A driving roller that sends out the tatami floor;
A drive source for driving the drive roller;
A presser roller that holds the tatami mat against the drive roller;
A tatami floor slitter device comprising a tatami floor and a cutting blade that forms a slit having a depth smaller than the thickness,
A slitter device for a tatami floor, wherein the distance between the contact point between the drive roller and the tatami floor and the cutting edge of the cutting blade is smaller than the thickness of the tatami floor. The slitter device for a tatami floor according to claim 1, wherein the cutting blade is a rotary blade and is not driven. The slitter device for a tatami floor according to claim 1 or 2, further comprising a plurality of cutting blades, wherein the distance between one cutting blade and another cutting blade disposed adjacent thereto is adjustable. The tatami floor slitter device according to any one of claims 1 to 3, wherein the cutting blade is configured to be displaceable in a direction approaching the tatami floor or a direction away from the tatami floor. The slitter device for a tatami floor according to any one of claims 1 to 4, wherein the presser roller presses the supplied tatami floor against the driving roller using its own weight. The tatami floor according to any one of claims 1 to 5, wherein the presser roller is supported by a swing shaft and is movable by swinging between a presser position for pressing the tatami floor and a retracted position. Slitting device. The presser roller is rotatably supported on one end side of the rotating member, and a stopper for restricting the swinging of the rotating member relative to the direction of pressing the tatami floor is disposed on the other end side of the rotating member. The tatami floor slitter device according to any one of claims 1 to 6, wherein the pivot member is provided with a swing shaft between the stopper and the presser roller.

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