JPS58781B2 - Automatic cutting device for tatami mats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic tatami facing cutting device (hereinafter abbreviated as a cutting device) for cutting obi-length tatami facing to arbitrary length, and the present invention relates to an automatic tatami facing cutting device (hereinafter abbreviated as cutting device) for cutting obi-length tatami facing to arbitrary length, and the present invention relates to an automatic tatami facing cutting device (hereinafter abbreviated as cutting device) for cutting obi-length tatami facing to arbitrary length. The purpose is to provide a new device that automatically performs the following.

The woven tatami mats are several tens of meters long, and are cut to a predetermined length and glued to prevent the cut portions from fraying, that is, from falling off, before being shipped.

This cutting work requires an average of 4 to 5 people, including a person who pulls the tatami mat, someone who measures the predetermined length, someone who cuts it, and someone who glues it. Cutting requires skill.

Therefore, it is hard work and the work efficiency is low, and countermeasures have been desired.

Therefore, attempts have been made to develop devices that automatically stretch, glue, and cut to a specified length (for example,
-22995).

However, in such devices, the gluing device is considered to be the most complicated, making automation difficult.

As seen in the above-mentioned Japanese Patent Publication No. 45-22995, some attempts were made to use a brush as a pasting device, but it was not easy to get the glue to stick to the brush, and a lot of glue was initially applied to the tatami surface. As the process progressed, the amount of glue that adhered to the brush became less and less and it became faded, and on top of that, the brushes wore out so much that they had to be replaced each time.

In addition, in the conventional device described above, two devices, the gluing device and the cutting device, were installed side by side on separate devices, so the Ikioi device had to be large and the glued This requires one process in which the part is sent to the cutting device, and during this process there are many problems, such as the possibility that the glue may permeate and fall or adhere to various parts of the device.

The present invention was developed with the aim of solving these difficulties, and even an amateur can perform the above-mentioned work by himself/herself.

The present invention will be explained in detail below with reference to the drawings.

Fig. 1 is a plan view of a cutting device which is an embodiment of the present invention;
3 is a front view of the same, FIG. 4 is an enlarged side view of the front part of the cutting device, and FIG. 5 is a side view of the fixed length tensioning device.

As shown in Figs. 1 to 3, the cutting device of the present invention has rails 2゜2' on a base 1, wheels 3 on the rails 2, 2', and cuts tatami mats to a certain length. A fixed-length tensioning device 4 is mounted on the chain, and the fixed-length tensioning device 4 is reciprocated by the rotation of a tensioning motor M-1 via chains C-1, C-2, and chain C-3. do.

As shown in detail in FIG. 4, the front part of the base 1 is equipped with a spray gun 5 for pasting and a cutter 6 for cutting the tatami facing so that they are on the same cutting line of the tatami facing. Chains C-4~ are installed on the top and bottom of the tatami mat.
It is provided so as to be reciprocated at right angles to the longitudinal direction of the base 1 by the rotation of the gluing and cutting motor M-2 via C-9.

The procedure for cutting the tatami mat will be explained in more detail below.

Freshly woven tatami mats are not folded in the same way, and are mostly folded in what is called guruguru-maki.

Therefore, in order to make it easier to cut the tatami cover to be cut by the cutting device, it is recommended to first fold it in a layered manner as shown in FIG.

As a device for this purpose, it is convenient to use a device that passes the tatami facing between rolls operated by a drive device and folds the tatami mat in a layered manner before the cutting device of the present invention.

After the tatami mat 8 folded in layers is conveyed by a conveyor or the like under the side of the guide plate 7 provided at the front of the cutting device, the edge of the tatami mat 8 is
That is, hold the so-called placket in your hand and align it with the resistance bar 9 to position it in the front, rear, left, and right directions.

This positioning is an important task since the tatami facing 8 will be cut perpendicular to the longitudinal edge of the tatami table 8, but since the resistance bar 9 is provided perpendicular to the longitudinal direction of the base, even an amateur can cut the resistance bar 9. Positioning can be easily performed by simply performing the following operations.

As is clear from FIGS. 1 to 4, the resistance bar 9 is a cylindrical column, and when the pedal 12 is depressed, a support 10 provided on the base is released.
The structure is such that the roll presser 11 ascends using the fulcrum as a fulcrum, and the roll presser 11 descends in the opposite direction.

Then, by stepping on the pedal 12 under the side of the base 1, the bundle 46 provided on the guide roll 12 is rotated and moved forward while sandwiching the tatami face 8 between the roll presser 11 and the guide roll 12. When the tatami cover is advanced to the position where the tatami covers are held between them, that is, above the guide bar 13, preparations for cutting are completed.

Next, when the operation switch 15 provided on the operation panel 14 provided at the top of the base is pressed, current flows to the tension motor M-1, causing it to rotate, chain C-3, chain C-1,
The chain C-2 rotates, and the fixed length tensioning device 4, which is locked to the chains C-1 and C-2, moves forward on the rails 2 and 2' to clamp the tatami mat 8 on the guide bar 12.

Here, the fixed length tensioning device 4, which is one of the features of the present invention, will be explained in detail.

As is clear from FIG. 5, the fixed-length tensioning device is provided with a clamp holder 17 at the front of the trolley frame 16, and a clamp holder 17 at the rear.
A clamping electromagnet 18 for opening and closing is provided.

The clamping tool 17 consists of an upper clamping piece 19 and a lower clamping piece 20 fixed to the trolley frame 16, and is normally equipped with a tension spring 21.
The upper clamping piece 19 is in the top-open state due to the tension of the upper clamping piece 19, but when current flows through the clamping electromagnet 18, the knock bar 22 is attracted, and the upper clamping piece fixing bar 23 fixed to the knocker 22 is opened. The structure is such that the upper clamping piece 19 clamps the lower seat and the tatami mat surface by making a small rotation about the fulcrum 24.

By rotating the chains C-1 and C-2, the tensioning device 4 of a fixed length is
In order to move forward or backward, an elongated hole 25 is provided at the bottom of the bogie frame 16, and a locking screw 26 fixed to the chain C-1 or C-2 is inserted into the elongated hole 25. It is locked to.

Since the elongated hole 25 is about 2 m wide and about 10 crn long, the fixed length tensioning device can reach either the front gear 27 or the rear gear 28 on which the chains C-1 and C-2 are stretched. When 4 comes, the rotating chains C-1 and C-
A locking screw 26 provided on the screw 2 moves within the elongated hole 25, and the direction of movement of the fixed-length tensioning device 4 locked therein is reversed.

That is, by rotating the chains C-L C-2 in the same direction, the fixed-length tensioning device 4 is configured to reciprocate between the front gear 27 and the rear gear 28.

When the fixed length tensioning device 4 moves forward and the upper clamping piece 19 reaches the top of the tatami surface on the guide bar, the front part of the trolley frame 16 of the fixed length tensioning device 4 moves to the limit switch LS provided on the front base 1. -3 is touched and electricity flows through the above-mentioned clamping electromagnet 18, and the tatami surface 8- is clamped between the upper clamping piece 19 and the lower clamping piece 20.

As mentioned above, when the front gear 27 of the fixed-length tensioning device 4, which was moving forward at the same time, made a half turn, the chains C-1 and C-2 were inserted into the elongated holes 25 provided in the truck frame 16. Since the locking screw 26 slides, the user reverses the direction of travel and returns home while pulling the tatami mat.

The front gear 27 is therefore provided coaxially with the rotating gear 29 of the chain C-3 connected to the tensioning motor M-1 at the front of the base 1 at a position where the clamping tool 1T can clamp the tatami surface.

Further, the guide bar 13 is for raising the tatami mat a little (approximately 10 points above the lower clamping piece 20) until it is time to clamp the tatami mat to make it easier for the clamping tool 17 to clamp the tatami mat. is the aforementioned limit switch LS-3
Therefore, when the clamping tool 17 is opened, the guide bar 13 is always raised.

When the fixed-length tensioning device 4 pulls the tatami mat to the rear of the base 1 and returns, the protrusion 3 provided on the trolley frame 16 of the fixed-length tensioning device
1 touches the limit switch LS-2 provided on the base 1, the current of the tensioning motor M-1 is cut off, and the fixed-length tensioning device 4 stops.

Both the tensioning motor M-1 and the gluing cutting motor M-2 used in the cutting device of the present invention require an instantaneous stop, so when the current stops, the so-called geared brake motor or It is recommended to use a motor such as a dynamic braking type motor.

Since this protrusion 31 is screwed to the cart frame 16 so that it can be moved back and forth, it is provided so that it can be adjusted in advance to the desired cutting length of the tatami surface by loosening this screw.

When the fixed length tensioning device 4 touches the limit switch LS-2 and stops, the limit switch LS-2 also serves as an input switch for the gluing cutting motor M-2, so electricity flows to the gluing cutting motor M-2. Start rotating.

The power of motor M-2 is transmitted from chain C-4 to spray gun 5 via chain C-9 and chain C-8 on the one hand.
chain C-5 and chain C-6 on the other hand.
, C-6', the cutter 6 of the cutting device is similarly moved.

To explain the gluing device in detail here, the spray gun 5 of the gluing device is located on the right side facing the front of the base when the carter is stopped or while the fixed length tensioning device 4 is moving. Two rails 32.32 installed above and below the front of the table.
In between, it is attached to a pole 34 which is fixed to a trolley 35 which is movable by means of four wheels 33 at right angles to the longitudinal direction of the base.

The trolley 35 has a long size 36 similar to the above-mentioned fixed length tensioning device 4, and the locking screw 37 of the chain C-8 fits into this elongated hole 36, and the rotation of the chain C-8 causes , move left and right.

When the trolley 35 for moving the spray gun 5 begins to move to the left, it moves away from the limit switch LS-4 installed at the top right of the base 1, and the solenoid valve 38 for the spray gun 5 is activated, causing the spray gun to move. 5, the glue is injected together with compressed air through the glue introduction pipe 39.

Compressed air is guided from a separately provided compressor to the spray gun 5 through a compressed air introduction pipe 40.

The glue for gluing is a water-based emulsion of polyvinyl acetate, and spray gun 5 is used to spread it on the tatami surface in a width of 30 mm.
The installation height is adjusted.

Here we will discuss in detail the cutter used to cut tatami mats.

As mentioned above, the movement of the spray gun 5 and the movement of the cutter 6 are carried out by the same gluing and cutting motor M-2, so when the motor rotates, that is, the spray gun 5 starts moving, the chains C-4 and C- Two chains C-6 and C-6' rotate through the chain C-5.

Chains C-6 and C-6' are also connected to gears 41.41' and 42.42' at right angles to the longitudinal direction of base 1.
is provided in between.

These two chains are provided with the same diameter, and the cutter attachment rod 43 is attached across the two chains at the same position, thereby obtaining the effect of reinforcing the wobble of the cutter attachment rod 43.

The cutter 6 is replaceably installed at the tip of the cutter mounting rod 43 with a screw, nut, etc., and the cutter 6 is attached with a chain C so that it always cuts the tatami surface approximately 10 cm behind the spray gun.
-6, driven by C-6'.

In order to facilitate cutting, a support rod 44 is provided on the right side of the front part of the base 1 to hold down the edge of the tatami surface, and electricity is applied to the electromagnet 45 at the same time as the electromagnetic valve 38 by the limit switch LS-4. The structure is such that the flow support rods 44 press down on the edges of the tatami surface.

When the spray gun serving as the glue application device finishes coating the left end of the tatami surface, the trolley 35 touches the limit switch LS-6, which closes the electromagnetic valve 38 and stops spraying the glue.

Then, the cutter 6 of the cutting device, which was cutting about 10 cm behind the cutter, turns downward when it finishes cutting to the left end and returns to the original starting point.

When the spray gun, which is the gluing device, returns to its original position at the right end of the device, its cart touches the limit switch LS-5, and the gluing and cutting motor M-2 is stopped.

This concludes the gluing and cutting process.

In order to continuously perform stretching, gluing, and cutting to a standard length as described above, when the dolly of the gluing device touches the limit switch LS-6, a timer provided on the operation panel 14 is activated. The mechanism is such that electricity flows to the tensioning motor M-1 for driving the fixed length tensioning device 4 and the tensioning motor M-1 is activated after a delay of several seconds.

Further, in order to make it possible to arbitrarily set the number of repetitions, the function can be further increased by disposing a relay switch as a counter switch in the operation panel 14 between the power source of the tension motor M-1 and the timer.

By having the automatic tatami facing cutting device of the present invention constructed as described above, conventional 4 to 5 workers can cut an average of 30 pieces per day.
Cutting 00 tatami mats, which used to be hard labor, has now been done by just one worker, who does not require much skill, and can cut one tatami mat at high speed in about 8 seconds. It has become something that can be done.

Furthermore, the cut parts of the cut tatami mats are precise and uniform, making it possible to make products with high value.

Furthermore, this device has spray guns and cutters for gluing placed at the same positions above and below the cutting line of the tatami mat, which prevents the device from becoming larger than the cutting length of the tatami mat.

By using a spray gun in the cutting device, the device did not become unnecessarily complicated, and moreover, it became an automatic cutting device that could apply glue reliably and accurately, and could provide a stable supply.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a cutting device which is an embodiment of the present invention;
3 is a front view of the same, FIG. 4 is an enlarged side view of the front part of the cutting device, and FIG. 5 is a side view of a fixed length tensioning device used in the cutting device of the present invention. 4... Fixed length tension device, 5... Spray gun, 6...
・Cutter, 8...Tatami surface, 17...Holder, LS-
1~LS-6...Limit switch, C-1~C-9
···chain.

Claims (1)

[Claims] 1. In an automatic cutting device that glues and cuts tatami mats after pulling them to a specified length, a spray gun 5 and a cutter 6 are used at the front part of the base 1 to hold the same cutting line above and below the tatami mat cut part to be cut. A gluing spray gun 5 is installed so as to be reciprocated by a chain stretched in a direction perpendicular to the longitudinal direction of the base. A cutter 6 is arranged so that it runs a predetermined distance behind the spray gun, and when the tatami face is pulled to a specified length by the tensioning device, the gluing cutting motor is started and the spray gun 5 moves to cut one edge of the tatami face. Glue is sprayed while the machine is running, and the cutter 6 moves at predetermined intervals to cut the tatami surface, and after cutting by the cutter, the fixed length tensioning device is activated automatically by electrical control. This is an automatic tatami surface cutting device that is characterized by: