JPS5927277Y2 - Tatami floor transfer device - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a tatami floor transfer device.

In the tatami manufacturing process, the above-mentioned tatami mat was installed as a flat stitching machine to sew the hem cloth and the underside of the tatami face side to the top side of the tatami face, which had both ends sewn to the stile of the tatami floor. It is known that the sewing machine is fixed on a pedestal with a tatami floor and runs along the side edge of the tatami floor (Jikko 5).
1-28807).

However, in the above-mentioned known flat stitching machine, the tatami floor is fixed to a holder and the sewing machine is run, and since the sewing machine is installed only on one side of the holder, the flat stitching of one tatami is carried out. In order to do this, it is necessary to make two reciprocations of the sewing machine and to attach and remove the tatami mats each time the sewing machine makes two reciprocations, which makes it impossible to process a large number of tatami mats continuously, resulting in low productivity.

In order to eliminate the above-mentioned drawbacks, the applicant first devised a double-sided stitching machine in which two sewing machines were placed facing each other and the tatami floor was moved between the two sewing machines. However, as a tatami bed transfer device that can be used with this double flat stitching machine, a large number of conveyor rollers are disposed along the linear tatami bed transport direction so as to be able to move up and down and are biased upward. A long rack guide is provided above the row of conveyor rollers so that it can be raised and lowered in the transport direction, and a tatami floor top pressing bar is fixed parallel to the rack at the bottom of the rack that is attached to the rack guide so that it can slide back and forth. He then proposed a system in which this rack was driven by a pinion (Japanese Patent Application No. 11242/1983).
(See specification No. 0).

The proposed tatami floor transfer device can move a large number of tatami mats in a straight line continuously while keeping the height of their top surfaces constant.
It also has the advantage of being easy to attach and detach the tatami floor.

However, the proposed tatami floor transfer device transfers the tatami floor by simply sandwiching the tatami floor between the top pressing bar and the upwardly biased conveyor roller when the rack guide is in the lowered position. If there is a large difference in the resistance force acting on the left and right sides of the tatami floor while the floor is being transferred, for example, use it as the side of the above-mentioned double-sided stitching machine equipped with a lower front sewing machine and an upper front sewing machine. When the sharpness of the tatami floor cutting cutter deteriorates, the tatami floor slips against the top pressing bar and the conveyor roller due to the difference in resistance, causing the tatami floor that was parallel to the transport direction to slip. There is a disadvantage that the center line is inclined with respect to the transport direction.

This idea prevents the tatami bed from slipping against the top pressing bar even when the above-mentioned difference in resistance occurs, and keeps the center line of the tatami bed parallel to the transport direction so that the tatami bed can be moved in a straight line. To provide a tatami floor transfer device that can

An embodiment of this invention will be explained below with reference to the drawings. A large number of sprocket shafts 3 equipped with paired chain sprockets 2°2 are arranged in parallel, and one long endless chain 4 is wound around each of the chain sprockets 2 in the left row and the chain sprockets 2 in the right row. ing.

As shown in FIG. 2, both ends of the sprocket shaft 3 are rotatably supported by the tip of an arm 6 that is swingably attached to the arm shaft 5, and the arm 6 is supported by a spring (not shown). At the same time, both ends of the two sprocket shafts 3 arranged in front and behind each other are connected by a connecting link 7, so that the two sprocket shafts 3, 3 move up and down at the same time.

A chain presser 8 is fixed to the above-mentioned connecting link 7 (see FIGS. 3 and 5), and the upper surface of the chain presser 8 is in contact with the rollers 4a of each link constituting the endless chain 4. chain sprocket 2
, and supports the endless chain 4 between the two in a straight line.

In addition, in FIGS. 4 and 5, 4b is a pin link plate, 4c is a roller link plate, 4d is a pin,
4e is a bushing, 4f is a split pin, and a triangular protrusion 4g is protruded from the above-mentioned pin link brake (4b).
・Ru0 Above the first row of sprocket shafts 3, there is a frame 9 (
Four lever shafts 11 in the width direction are attached at equal intervals by a bracket 10 fixed to a bracket 10 (see FIG. 2), and a bent portion of a character 1 lever 12 is rotatably fitted onto the lever shaft 11.

The above-mentioned 1-shaped lever 12 consists of an upper arm 12a and a horizontal arm 12b, and the upper ends of the upper arms 12a of the four 1-shaped levers 12 are connected to each other by a longitudinal connecting rod 13. A piston rod 14a of the fluid cylinder 14 is connected to one end, and the sliding movement of the piston rod 14a causes the horizontal arm 12b of the 1-shaped lever 12 to swing up and down.

At the tip of the horizontal arm 12b, there is a
The rack guide 15, which is slightly longer than the length of the rack guide 15, is
It is suspended horizontally by a protruding piece 16 and a connecting pin 17 fixed upward at a location.

The above-mentioned rack guide 15 is formed by two left and right guide frames 15a, 15a facing each other with a slight interval, and a total of four rails 15b fixed vertically and parallel to the inner surface of each guide frame 15a. ing.

Note that the two guide frames 15a, 15a are connected to each other at multiple locations on the upper edge and are integrated.

On the other hand, at the upper center in the longitudinal direction of the rack guide 15 (see Fig. 1), one end is connected to a universal joint (L. not shown).
A pinion shaft 18 in the width direction connected to a drive shaft via a pinion shaft 18 is attached, and a pinion 19 fixed to the other end of this pinion shaft 18 is attached to two guide frames 15a.

15a and engages with the rack 20 located between L.

The above-mentioned rack 20 is set to have a length slightly longer than the tatami floor 1, and has a large number of roller shafts 21 protruding from both left and right sides as shown in FIGS. 2 and 3. Axis 2
A roller 22 rotatably fitted to the rack guide 15 is inserted between the upper and lower rails 15b of the rack guide 15.

The rollers 22 mentioned above are arranged in two rows, upper and lower, with a slight height difference, and the upper roller 22 is connected to the upper rail 1.
5b, and the lower roller 22 is attached to the lower rail 1.
5b, and are rolled in contact with the upper surface of each of them.

A top pressing bar 24, which is made of a pipe with a rectangular cross section and has approximately the same length as the rack 20, is fixed to the lower surface of the rack 20 through three legs 23. The central part of the stile push rod 26 in the width direction is attached via the bracket 25 so as to be slidable back and forth, so that the stile push rod 26 can be fixed at any position in the front and back direction.

In addition, on the rear side of the rack guide 15 (see FIG. 1), a straight ruler 27 for positioning the tatami floor 1 is attached to the rack guide 15.
O is provided in parallel with The rear part of the pair of endless chains 4, 4 (
The tatami floor 1 is supplied to the right side of Fig. 1).

In this state, after positioning the tatami floor 1 by aligning the side edge of the tatami floor 1 with the straight line ruler 27, when the piston rod 14a of the fluid cylinder 14 is pushed out, the rack guide 15 is lowered, and the upper surface pressing bar 24 below the rack guide 15 is lowered. The tatami floor 1, the endless chain 4, the chain sprocket 2, and the sprocket shaft 3 are pushed down against the elasticity of the biasing spring of the arm 6, and then the stile push rod 26 is slightly advanced forward, and the tatami floor 1 is pushed down. It is fixed to the bracket 25 at a position in contact with the rear stile.

Then, when the pinion 19 is driven intermittently, the rack 20 meshing with the pinion 19 causes the rack 20
The tatami floor 1, which is sandwiched between the upper surface presser bar 24 fixed to the left and right endless chains 4.4, is
The chain sprocket 2 positioned in front of the tatami floor 1 is sequentially pushed down by the front end of the tatami floor 1 via the endless chain 4, and moves forward in a straight line.

When the tatami bed transfer device is used in a ryohira stabbing machine, the upper front of the tatami bed 1 is straightened by the tatami bed cutting cutter as the above-mentioned forward movement is performed, and at the same time the upper front and lower front Sewn the hem fabric and sew-in fabric on the front and back sides.

At this time, the pin link plate 4b and roller link plate 4c of the endless chain 4 are attached to the bottom surface of the tatami floor 1.
are pressed together, and the protrusion 4 of the pin link plate 4b
g bites into the upper surface of the tatami floor 1, the tatami floor 1 is prevented from slipping against the endless chain 4, and even if the sharpness of the tatami floor cutting cutter of the above-mentioned double flat stitching machine has deteriorated, the tatami floor 1 can be straightened. move forward in a manner.

However, in the above embodiment, the two sprocket shafts 3
, 3 are connected by a connecting link 7, and a chain presser 8 fixed to this connecting link 7 presses the endless chain 4 between the two front and rear chain sprockets 2, 2 to the underside of the tatami floor 1, thereby preventing the above-mentioned slip. is more reliably prevented.

In addition, the widthwise central part of the tatami floor 1 is pressed down from above by the upper surface pressing bar 24, and both left and right sides are pushed up from below by the chain sprockets 2, 2, so that it curves downward into a convex shape. When used in a flat stitching machine, the tatami facing 1a is sewn without slack.

Note that when the tatami floor 1 reaches above the chain sprocket 2 at the front end, the pinion 19 stops, the piston rod 14a of the fluid cylinder 14 is retracted, the rack guide 15 is returned to the upper position, and the upper surface pressing bar 24 is pressed against the tatami mat. The rack 20 is separated from the floor 1, and then the pinion 19 is reversed to return the rack 20 together with the upper surface holding bar 24 to the rear position.

In the above embodiment, the number of endless chains 4 can be increased or a double-row chain can be used, and in these cases, the protrusion 4g can be omitted.

In addition, in the above embodiment, one long endless chain 4 is wound around a large number of chain sprockets 2 arranged in an area slightly longer than twice the length of the tatami floor 1. A short endless chain may be wrapped around each set of a plurality of pieces, such as two or three pieces lined up.

In addition, two arms 6.front and rear are connected by a connecting link 7.
Instead of biasing each arm 6 with a spring, only one arm 6 may be biased.

Further, the above-mentioned urging may be performed by a fluid cylinder, and furthermore, a spring and a fluid cylinder may be used in combination to push the front end of the tatami floor 1 upwardly when it rides on the chain sprocket 2.

Moreover, an electromagnet can be used instead of the fluid cylinder 14 for raising and lowering the rack guide 15, and a cam that is slidable in the length direction can be used instead of the single-shaped lever 12.

Moreover, the stile push rod 26 at the rear end of the upper surface holding bar 24 is
The slide may be moved by an electromagnet, a motor, a fluid cylinder, etc.As explained above, this invention provides a linear rack guide that can be moved up and down, and the lower part of the rack that is attached to this rack guide so that it can slide forward and backward. The upper surface pressing bar of the tatami floor is fixed in parallel with the above-mentioned rack, and when the rack guide is in the lowered position, the tatami floor is pressed against the upper surface pressing bar from below so as to be slidable back and forth, and the above rack is driven by a pinion. In the tatami floor transfer device, a large number of sprocket shafts each having one pair of chain sprockets on the left and right sides are disposed below the rack guide so as to be able to move up and down and are biased upward. An endless chain is wound around the tatami floor and this endless chain is pressed against the bottom surface of the tatami floor, so the top surface height of the tatami floor can be maintained constant and the tatami floor can be easily attached and removed. In addition, even if there is a large difference in the resistance force acting on the left and right sides of the tatami bed during transport, the tatami bed can be moved straight without being inclined with respect to the direction of transport.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is a side view of a part of the rack guide, and Fig. 3 is a section III-III of Fig. 2.
4 is a side view of a portion of the endless chain, and FIG. 5 is a sectional view taken along the line ■-■ in FIG. 4. 1...Tatami floor, 2...° chain sprocket, 3...Sprocket shaft, 4...
Endless chain, 6...Arm, 15...
... Rack guide, 19 ... Pinion, 2
0...Rack, 24...Top surface holding bar 0

Claims (1)

[Scope of Claim for Utility Model Registration] [1] A linear rack guide is provided that can be raised and lowered, and a tatami floor upper surface pressing bar is fixed parallel to the rack at the bottom of the rack that is attached to the rack guide so as to be slidable back and forth. death,
In a tatami floor transfer device in which the rack is driven by a pinion by press-contacting the upper surface pressing bar from below to the upper surface pressing bar when the rack guide is in the lowered position so as to be slidable back and forth, the rack is driven by a pinion. A large number of sprocket shafts each equipped with a pair of chain sprockets are arranged so as to be able to rise and fall freely and are biased upward, and an endless chain is wound around the chain sprocket, and this endless chain is pressed against the underside of the tatami floor. The tatami floor transfer device according to claim 1, wherein an endless chain is wound around each set of two chain sprockets arranged in front and back in the same row. Device [out] 1 for all chain sprockets lined up in the same row.
The tatami floor transfer device according to claim 1, on which an endless chain of books is wound. [4] Utility model registration claim 1, in which two sprocket shafts arranged in front and behind are connected by a pair of left and right connecting links, and a chain presser fixed to the connecting links is in contact with the lower surface of the roller of the endless chain. L of term to 3rd term
・The tatami floor transfer device described in any of the above.