JPS5915844B2 - Tatami floor transfer device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tatami floor transfer device.

In the tatami manufacturing process, after sewing and fixing both ends of the tatami face to the stile of the tatami floor, the flat stitching machine is used to sew the hem cloth and hem bottom to the side edges of the tatami face, overlapping the inside and outside sides. In 1999, the applicant proposed a double-sided stitching machine in which flat stitching was simultaneously carried out on both sides of the tatami floor by two sewing machines while moving the tatami floor in the length direction (Japanese Patent Application No. 56-28785). (see book).

The proposed flat stitching machine has a vertical shaft that passes approximately halfway between the two sewing machines, and two sewing machines that are close to each other in the width direction are connected to each other.
A plurality of sets of guide rollers and a plurality of pinions each having a widthwise axis and being intermittently rotated by a ratchet are arranged in the direction of transport of the tatami floor, and below the guide rollers and pinions. By supplying a tatami floor on which a guide plate consisting of a long and thin flat plate and a rack are vertically attached in advance in the length direction of the upper surface, the guide rollers are in contact with both sides of the guide plate on the tatami floor, and the pinion is in contact with both sides of the guide plate on the tatami floor. It engages with a rack on the floor to transport the tatami floor intermittently at a fixed pitch.

However, in the device proposed above, the guide plate and rack are fixed along the side edges of plywood that is slightly longer than the entire length of the tatami floor, and this plywood is fixed in the width direction connected to the lower surface of both ends of the plywood. It is fixed to the tatami floor by touching the stile of the tatami floor with the stile and piercing the pins, so it is necessary to attach the above plywood to each tatami floor. Since precision is required to guide each sewing machine to its corresponding sewing machine, the installation described above is extremely troublesome, and it also has the disadvantage of requiring the preparation of multiple pieces of plywood with the guide plates and racks described above. .

The present invention provides a tatami bed transfer device for use in a double-sided stitching machine or a backstitching machine, which can move a tatami bed in a straight line accurately and does not have the above-mentioned drawbacks.

That is, the present invention has a large number of conveyor rollers arranged along the linear tatami floor transfer direction so as to be able to rise and fall freely and urged upward, and a rack that is long in the transfer direction above the row of the conveyor rollers. A guide is provided that can be raised and lowered, and this rack guide has a large number of teeth engraved on the top surface, a top press bar for the tatami floor that is parallel to the rack guide at the bottom, and a stile press in the width direction below the supply side end. A tatami floor characterized in that ranks each having a rod are attached so as to be slidable back and forth, and a pinion that moves up and down together with the rack guide above the center of the rack guide and that can move in the forward and reverse directions and engages with the rack is provided. It is a transport device.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a tatami bed with a tatami cover 1a attached to its upper surface, and in order to transport the tatami bed 1 linearly in the direction of arrow P to an area slightly longer than twice the length of this tatami bed 1. A large number of conveyor rollers 2 are arranged.

The length of the conveyor roller 2 is set to be slightly shorter than the width of the tatami floor 1, so that the tatami floor 1 is placed on the conveyor roller 2, and the both edges of the tatami floor 1 are placed on the conveyor roller 2. It is designed so that it can be passed over the bed of a sewing machine.

Further, as shown in FIG. 2, this conveyor roller 2 has a shaft portion 2a rotatably supported at the tip of an arm 4 which is swingably attached to an arm shaft 3 which is fixed in position. The arm 4 is urged upward (in the direction of arrow Q) by a spring (not shown).

Above the first row of conveyor rollers 2-, there is a frame 5.
(See Figure 2), four lever shafts 7 in the width direction are arranged at equal intervals by a fixed bracket 6, and a bent part of an L-shaped bar 8 is rotatably fitted to the lever shaft 7. Ru.

The L-shaped bar 8 is composed of an upper arm 8a facing upward and a rear arm 8b facing backward (in the opposite direction of arrow P), and the upper ends of the upper arms 8a of the four L-shaped bars 8 are connected to connecting rods in the longitudinal direction. 9, and a piston rod 10a of a fluid cylinder 10 is connected to one end of this connecting rod 9, so that the sliding of the piston rod 10a causes the rear arm 8b of the L-shaped bar 8 to swing up and down. It has become.

At the tip of the rear arm 8b, there is a
The rack guide 11 is slightly longer than the length of the rack guide 11.
It is suspended horizontally by a protruding piece 12 and a connecting pin 13 fixed upward at a location.

As shown in FIGS. 2 and 3, the rack guide 11 described above consists of two left and right guide frames 11a, 11a facing each other with a slight interval, and this guide frame 11a.
It is formed by a total of four rails 11b fixed vertically and parallel to the inner surfaces of each of the rails 11b.

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

On the other hand, a pinion shaft 13 in the width direction is rotatably attached to the upper center in the length direction of the rack guide 11 (see FIG. 1), and a pinion shaft 14 is attached to one end of this pinion shaft 13.
is fixed, the lower part of this pinion 14 is inserted between the two guide frames 11a, 11a, and the other end of the pinion shaft 13 is connected to a universal joint 15, an intermediate shaft 16, and a universal joint 17.
It is connected to a drive shaft 18 which can be rotated in forward and reverse directions.

Left and right guide frames lia of the above rack guide 11
, 11a, the rank 19 is set to have a length slightly longer than the tatami floor 1, and has teeth 19a carved on its upper surface to engage with the pinion 14.
As shown in FIGS. 2 and 3, 9 has a large number of roller shafts 20a protruding from both left and right sides, and the roller 20 rotatably fitted to the roller shafts 20a is connected to the rack guide. 11 is inserted between the upper and lower rails 11b, 11b.

The rollers 20 mentioned above are arranged in two rows, upper and lower, with a slight height difference, and the upper roller 20 is connected to the upper rail 1.
1b, and the lower roller 20 is attached to the lower rail 1.
They are rolled in contact with the upper surface of 1b.

An upper surface pressing bar 22 made of a pipe with a rectangular cross section and having approximately the same length as the rack 19 is fixed to the lower surface of the rack 19 via three legs 21.

This upper surface holding bar 22 is attached so that its front end protrudes slightly forward than the front end of the rack 19.
As shown in FIGS. 4 and 5, a box-shaped frame 23 is fixed to the rear end so as to extend the upper surface pressing bar 22 rearward.

This box-shaped frame 23 has left and right side plates 23 a , 23 a whose front ends touch the rear end of the side surfaces of the upper surface pressing bar 22 , and connects the front portions of these side plates 23 a , 23 a to touch the rear end surface of the upper surface pressing bar 22 . Front plate 23b and the above side plate 23a
, 23a, and the side plate 2.
3a and 23a, and a bottom plate 23e that connects the intermediate plate 23c''J6 and the lower end of the rear plate 23d.

A deceleration motor 24 is fixed on the bottom plate 23e, and its rotating shaft 24a projects forward through a hole bored in the intermediate plate 23c, and a threaded shaft 25 is connected to its projecting end. A sliding block 26 having a female thread is screwed thereto, and the front end of the threaded shaft 25 is rotatably supported by a bearing 27 fixed to the rear surface of the front plate 23b.

Guide grooves 26a, 26a are cut on both sides of the sliding block 26 parallel to the screw shaft 25, and the guide grooves 26a slide on guide rails 28, 28 protruding from the inner surface of the side plate 23a. The deceleration motor 24
The sliding block 26 is slid back and forth by rotating it forward and backward.

The central part of a stile push rod 29 having a rectangular cross section is rotatably attached to the center of the lower surface of this sliding block 26 with a pin 29a. The front ends of the coil springs 31 attached to the inverted-shaped spring holders 30 fixed on the left and right sides of the lower rear surface of the moving block 26 are pressed against each other, and the balance of the elasticity of these left and right coil springs 31 and 31 causes the stile push rod 29 to move approximately. It is held so that it faces in the width direction.

In FIG. 1, on the rear side of the rack guide 11, there is a straight line ruler 3 fixed to the frame (not shown).
2 is provided parallel to the rack guide 11, and the lower surface of this linear ruler 32 is lightly touched by the upper surface side edge of the tatami floor 1 placed on the conveyor roller 2 at the rear.

In the above structure, when the piston rod 10a of the fluid cylinder 10 is retracted and the rack guide 11 is located upward, and the rack 19 is located at the rear of the rack guide 11, two points are placed on the rear conveyor roller 2. - The tatami floor 1 indicated by the line is supplied.

At this time, the sliding block 26 at the rear end of the upper surface holding bar 22
By retreating to the rear end of the screw shaft 25, the stile push rod 29 is set to be located further back than the rear stile of the tatami floor 1.

In this state, after positioning the tatami floor 1 by aligning the side edge of the tatami floor 1 with the linear ruler 32, when the piston rod 10a of the fluid cylinder 10 is pushed out, the rack guide 11 is lowered and the upper surface pressing bar 22 below it The tatami floor and the conveyor roller 2 are pushed down against the elasticity of the spring urging the arm 4.

Subsequently, the deceleration motor 24 at the rear end of the top pressing bar 22 is driven in the forward direction for a predetermined period of time, so that the sliding block 26 is advanced forward, and the stile push rod 29 is pressed against the rear stile of the tatami floor 1. and stop.

At this time, the stile push rod 29 is attached at the center with a pin 29a, and the left and right sides are pressed by coil springs 31 and 31, respectively, so that the tatami floor 1
Even when the rear stile is inclined with respect to the width direction, the stile push rod 29 is automatically brought into close contact with the rear stile.

Next, when the drive shaft 18 is driven in synchronization with a sewing machine needle (not shown) of a flat stitch sewing machine, the pinion 14 is intermittently rotated in the forward direction, and the rack 19 that meshes with the pinion 14 is rotated on its left and right sides. The rollers 20 on both sides are guided and driven by the rails 11b of the rack guide 11, so that they move linearly in the direction of arrow P.

Accordingly, the tatami floor 1, which is sandwiched between the upper surface pressing bar 22 fixed at the lower part of the rack 19 and the lower conveyor roller 2, is removed from the conveyor roller 2''J6 and the rack guide 11.
Since they are orthogonal to each other, they are correctly fed in a straight line in the direction of arrow P without being deviated from the upper surface pressing bar 22, and during this time flat stitching is performed on both side edges of the tatami floor 1.

When the tatami floor 1 reaches the position indicated by the solid line in Fig. 1, the pinion 14
rotation is stopped, the rack guide 11 is raised by the fluid cylinder 10, and the upper surface pressing bar 22 is separated from the tatami floor 1.

Thereafter, the drive shaft 18 is rotated in the opposite direction at a high speed, so that the rack 19 is returned to the initial position at a high speed.

Also, during this time, the deceleration motor 2 at the rear end of the upper surface holding bar 22
4 is reversed and the sliding block 26 is returned to its original position.

In the embodiments described above, the rack guide 11 may be moved by other means, such as using an electromagnet instead of the fluid cylinder 10 or using a longitudinally slidable cam instead of the L-shaped bar 8. It can be raised and lowered.

Moreover, a sliding piece may be fixed to the rack 19 instead of the roller 20, and the sliding piece may be fitted between the upper and lower rails 11b, 11b.

Moreover, the sliding block 26 attached to the stile push rod 29 can be slid by an electromagnet or an air cylinder.

As explained above, this invention presses an upper surface pressing bar perpendicular to the conveyor roller onto the tatami floor above the conveyor roller, and engages the rack fixed to the top of this upper surface pressing bar with a pinion to move it straight. Since the above-mentioned tatami floor is transported, it is extremely easy to attach and detach the tatami floor from the top pressing bar, and there is no need to install racks on the tatami floor in advance as in the past, so a large number of such racks are prepared. There's no need to.

Note that this tatami floor transfer device can also be used as a reverse stitching mechanism.

[Brief Description of the Drawings] Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a side view of a part of the rack guide, Fig. 3 is a sectional view taken along the line ■-■ of Fig. 2, The figure is a plan view of the sliding mechanism of the tatami floor support bar, and FIG. 5 is a sectional view taken along the line v--v in FIG. 4. 1: Tatami floor, 2: Conveyor roller, 11: Rank guide,
14: pinion, 19 pinion, 22: top press bar, 29: stile push bar.

Claims (1)

[Scope of Claims] 1. A large number of conveyor rollers are disposed along the linear tatami floor transfer direction so as to be able to rise and fall and are biased upward, and above the row of the conveyor rollers in the transfer direction. A long rack guide is provided that can be raised and lowered freely, and this rack guide has a large number of teeth engraved on the top surface, a top pressing bar for the tatami floor that is parallel to the rack guide at the bottom, and a bar in the width direction below the supply end. A rack provided with a stile push rod is mounted so as to be slidable back and forth, and a pinion is provided above the center of the rack guide, which moves up and down together with the rack guide, and which is capable of forward and reverse rotation and engages with the rack. Tatami floor transfer device. 2 The length of the rank guide is set to be more than twice the length of the tatami floor,
The tatami floor transfer device according to claim 1, wherein the length of the rack is set to be slightly longer than the tatami floor. 3. The tatami floor transfer device according to claim 1 or 2, wherein the ranks slide on the rack guide via a large number of rollers. 4. The tatami floor transfer device according to any one of claims 1 to 3, wherein the stile push rod is attached to be horizontally rotatable about its center as a fulcrum. 5. Claim 4, wherein the stile push rod is attached to a sliding block whose longitudinal position can be adjusted by a shaft pin, and is biased symmetrically by two left and right springs.
The tatami floor transfer device described in Section 1.