JPH09250877A - Transferring apparatus for tunnel kiln - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to efficiently handle without increasing the length of a line by movably disposing a pallet truck in the direction crossing with the charging direction of an external conveying passage to the conveying port of a kiln. SOLUTION: The standby rails 3a, 3b of a pallet truck 51 are disposed along the side of a tunnel kiln 1, and conveying rails 4a, 4b are disposed along the conveying port of tunnel kilns 1, 2 perpendicular thereto. Further, delivering rails 5a, 5b are provided in the direction perpendicular to the connecting rails 1c, 2c at the delivering side of the kilns 1, 2. Trucks 51 are fed one by one to the rails 3a, 3b, and intermittently fed to transfer the trucks 51 rightward. The truck 51 disposed at the right end of the standby rail is received, and then transferred to any conveying port of the kilns 1, 2, and a transferring apparatus 6 for delivering to the interior is disposed so as to make it possible to travel on the conveying rails 4a, 4b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel kiln facility such as an autoclave for firing exterior panels for construction, etc., and particularly, to enable a pallet trolley carrying products to be handled with a simple line structure. Regarding the transfer device.

[0002]

2. Description of the Related Art Tunnel kilns such as autoclaves are generally used as equipment for firing large exterior panels and the like. The equipment of such a tunnel kiln is such that a plurality of pallet trucks are arranged in a row in which the front and rear of the pallet trucks are abutted, and one group is loaded into the tunnel kiln and baked, and then a group of pallet trucks is unloaded and a new group is carried out. A group of pallet trucks are similarly loaded.

For the operation of loading and unloading such a pallet truck, rails connectable to the rails installed in the tunnel kiln are arranged on the entrance side and the exit side, and these rails are used. It is necessary to provide a facility for running a pallet truck. Most of the layouts of the lines are based on the position of the tunnel kiln and the entrance side and the exit side thereof. Particularly, on the entrance side, a group of a plurality of pallet trucks is used, for example, using sheaves and wire ropes. The equipment is such that the entrance side rail is laid on the extension of the tunnel kiln rail so that it can be done by pushing once.

[0004]

However, when arranging the rail on the entrance side on the extension of the tunnel kiln, the total length of the row of pallet trucks and the length of the tunnel kiln that are on standby before loading into the tunnel kiln. Becomes the line length, and the total length of the line becomes considerably large. Therefore, although batch handling is possible with a plurality of pallet trucks as one unit, the area occupied by the line equipment becomes large and the movement amount of the pallet truck itself becomes long.

Therefore, not only is a large-scale facility required to make maintenance and inspection complicated, but also a plurality of pallet trucks are handled as one group, so that the driving force for transporting these pallet trucks is also increased. It is necessary, and the device for driving becomes large.

As described above, the conventional equipment for loading and unloading the pallet truck into the tunnel kiln has a problem that the equipment area must be large enough to secure the line length. Further, since a group of a plurality of pallet trucks is handled as a unit, a large-scale design change is required to automate the equipment, and it is difficult to deal with complete automation.

An object to be solved in the present invention is to provide a transfer device which can be efficiently handled without increasing the line length in equipment for carrying in a pallet truck having products mounted in a tunnel kiln or the like.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a pallet trolley carrying a treatment material is received from an external loading path and is arranged so as to be movable in a direction intersecting with a loading direction into a loading port of a tunnel kiln. A transfer device having a dog operable at the front end to engage or disengage the lower surface of the pallet truck and movable in the loading direction; and a base end of the dog frame. It is characterized by comprising a fixed dog disposed on the side and receiving an end face of the pallet truck, and a driving means for moving the dog frame with a stroke longer than a distance between the dog and the fixed dog.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In such a structure, it is assumed that a lock device is provided which engages with a leading end surface in the loading direction to the carry-in port and restrains movement of the pallet truck together with the fixed dog in the loading direction. Good.

Further, a clamp block for positioning is arranged on the work floor midway of the movement path in the direction intersecting the loading direction, and the positioning with respect to the carry-in port is made possible by engagement with these clamp blocks. Can be

Furthermore, a receiving block for receiving a reaction force is arranged on the work floor opposite to the loading direction of the dog frame, and can be joined to the receiving block when the dog frame is in a position aligned with the carry-in port. May be

[0012]

1 is a plan view showing the outline of the equipment layout of a tunnel kiln equipped with the transfer apparatus of the present invention.

In the figure, two tunnel kilns 1 and 2 are arranged so that each has a parallel transport path inside, and two tunnel kilns 1 and 2 are provided for each of the tunnel kilns 1 and 2. , 2a. In the figure, the tunnel kilns 1 and 2 have a right end as a carry-in port for the pallet truck 51 and a left end as a carry-out port. The carry-in port and the carry-out port respectively have vertically movable connection rails 1b, 1c, 2b and 2c are provided.

A standby rail 3 for keeping a plurality of pallet trucks 51 on the side of the tunnel kiln 1.
a and 3b are installed, and two carry-in rails 4a and 4 running along the carry-in entrances of the tunnel kilns 1 and 2 are orthogonal to the standby rails 3a and 3b at positions facing the right end portions thereof.
b is arranged. Two unloading rails 5a and 5b are provided on the unloading side of the tunnel kilns 1 and 2 in a direction orthogonal to the connection rails 1c and 2c.

Pallet carriages 51 are fed to the standby rails 3a, 3b one by one from the introduction rails 3c, 3d facing the left ends of the standby rails 3a, 3b, and a plurality of dogs (not shown) which are conventionally known to be tilted are palletized. The pallet trucks 51 on the standby rails 3a and 3b are moved rightward in FIG. 1 by arranging them in the feed direction of the truck 51 and intermittently feeding some of these dogs by a cylinder (not shown). . After receiving the pallet truck 51 located at the right end of the standby rails 3a and 3b, the pallet truck 51 is moved to the tunnel kiln 1,
The transfer device 6 for transferring to any one of the carry-in entrances 2 and sending it out is arranged so as to be able to travel on the carry-in rails 4a and 4b.

2 is a plan view of the transfer device 6, FIG. 3 is a vertical sectional view taken along the line AA of FIG. 2, FIG. 4 is a front view seen in the traveling direction, and FIG. 5 is a right side surface of FIG. It is a figure.

The transfer device 6 has a planar shape in which two lower frames 6a and two upper frames 6b connected to the upper ends thereof are combined in a checkered pattern, and the lower frames 6a have upper roll-in rails 4a and 4b. It is equipped with four wheels 6c. Of these wheels 6c, the two located on the lower end side in FIG. 2 are connected to the output shaft of the electric motor 6d, and are rotationally driven by the operation of the electric motor 6d.

Wheels 51a of the pallet truck 51 are provided on the upper surfaces of the two upper frames 6b, respectively.
Guide rails 7a and 7b for transferring from 3a are provided. As shown in FIG. 3, the carry-in rails 4a and 4b are located on the lower side, and when the wheels 6c are mounted on the carry-in rails 4a and 4b, the guide rails 7a and 7b are at the same level as the standby rails 3a and 3b. The same positional relationship is established for the rails 1a and 2a in the tunnel kilns 1 and 2, respectively.

A dog frame 8 is provided in a portion sandwiched by the upper frame 6b so as to be capable of reciprocating leftward with the origin position shown in FIG. The dock frame 8 is movable while being constrained in the width direction and the vertical direction by the guide rollers 6f provided on the two support frames 6e mounted on the lower frame 6b, and as shown in FIG. It is connected to a rod 9a of a cylinder 9 whose base end is connected to the right end of the frame 6b.

At the tip of the dog frame 8, the dog 8a
Attach so that it can be tilted. This dog 8a has a pin 8b as shown in FIG. 2 and a cutaway side view of FIG.
Is rotatably connected to the dog frame 8 in the vertical direction by means of the position of the center of gravity of the dog 8b with respect to the pin 8b, and in a normal state where no load is applied, the standing posture shown by the solid line in FIG. Held in. In this standing posture, the pressing portion 8c at the upper end of the dog 8b is
It is possible to hit the end face of the pallet truck 51 and push it.

In order to set the dog 8a in a tilted posture, as shown in FIG. 6, a pusher cylinder 10 is provided at a position closer to the cylinder 9 side than the pin 8a, and the pusher rod 10a is pushed to the dog 8a. It can be applied.
When the pusher rod 10a rises to the position shown by the alternate long and short dash line in FIG. 6, this causes the dog 8a to rotate in the counterclockwise direction around the pin 8b, and the entire dog 8a goes under the pallet carriage 51 and does not interfere with it. Set to position.

Further, the dog frame 8 at a position opposite to the dog 8a and corresponding to the base end side of the cylinder 9.
The fixed dog 8d that receives the end surface of the pallet truck 51
Are provided integrally. A lock device 11 for fixing the pallet truck 51 introduced from the standby rails 3a, 3b onto the guide rails 7a, 7b at a fixed position together with the fixed dog 8d faces the standby rails 3a, 3b. It is provided on the lower frame 6a.

FIG. 7 is a detailed view of the lock device 11 shown in the direction of arrow BB in FIG. 2. The lock arm 11b is attached to the bracket 11a fixed to the lower frame 6b so that the lock arm 11b is rotatable up and down. The rod 11d of the cylinder 11c, the base end of which is connected to the lock arm 11b, is connected to the lock arm 11b.

Except during the period in which the pallet truck 51 is mounted on the transfer device 6 and transferred, the rod 11d is retracted as shown in the drawing, and the lock arm 11b is inclined obliquely downward as shown by the one-dot chain line in the figure. The lock arm 11b is retracted so as not to interfere with the lower surface of the pallet truck 51. After the pallet truck 51 is mounted on the transfer device 6, one end of the pallet truck 51 is abutted against the fixed dog 8d and, at the same time, the rod 11d of the cylinder 11c is advanced and the lock arm 11b is rotated as shown by the solid line in FIG. To move. As a result, the pallet truck 51 moves the standby rail 3a,
After moving from 3b to the guide rails 7a, 7 side, the fixed dog 8d and the lock arm 11b are restrained and maintained in a predetermined position.

Further, the transfer device 6 is mounted on the loading rails 4a and 4b.
When the guide rails 7a and 7b of the transfer device 6 are aligned with the connection rails 1b and 2b between the tunnel kilns 1 and 2 when they are moved to the entrance side of the tunnel kilns 1 and 2 by the A pair of clamp devices 12 are provided on the lower frame 6a.

FIG. 8 shows details of the clamp device 12,
(A) of the same figure is a front view seen in the traveling direction of the transfer device 6, and (b) of the same figure is a partial cutaway view seen in the CC line arrow direction of the same figure (a).

The clamp device 12 has a block 1 at the lower end of a rod 12b of a cylinder 12a fixed to a lower frame 6a.
2c are connected to each other, and a tapered engagement groove 12d is cut out on the lower surface of the block 12c along the entire length in the depth direction in FIG. On the other hand, the tunnel kiln 1,
Clamp block 13 for engaging the clamp device 12 so that the positions of the guide rails 7a, 7b are aligned with the connection rails 1b, 2b on the respective sides of 2, and restraining the positions.
Is provided. As shown in FIG. 1, these clamp blocks 13 are arranged in pairs for each of the tunnel kilns 1 and 2 between the carry-in rails 4a and 4b. Then, as shown in FIG. 8B, the clamp block 13 has a tapered surface 13a aligned with the engagement groove 12d of the block 12c of the clamp device 12.

Here, FIG. 8B shows the connection rail 1b,
2b is the posture seen from the direction of these connecting rails 1
tapered surface 1 in the direction of the space between the rails b and 2b
3a is facing. Therefore, the clamp block 13
Is fixed to the working floor in advance in the correct position with respect to the connection rails 1b and 2b, the guide rails 7a and 7b can be accurately connected to each other by the taper engagement between the block 12c and the tapered surface 13a of the clamp block 13. , 2b.

Further, a reaction force receiving mechanism for pushing the pallet truck 51 toward the tunnel kilns 1 and 2 by the dog frame 8 is provided between the upper frame 6b and the work floor.
This reaction force receiving mechanism is provided on the right side of the carry-in rail 4a in FIG. 1, and a pair of receiving blocks 14 and 15 are provided at positions facing the tunnel kilns 1 and 2, respectively.
Is used. Then, as shown in FIG. 9, a cylinder 16 is connected to a bracket 6g at the right end of the two upper frames 6b located above and below in FIG. 2, and a wedge-shaped block 16b is connected to the rod 16a of this cylinder 16. are doing. The wedge-shaped block 16b is the upper frame 6
It is slidably attached in the vertical direction by a guide 6h provided integrally with b, and the surface facing the receiving blocks 14 and 15 is a tapered surface. Further, each of the receiving blocks 14 and 15 is also provided with inclined pressure receiving surfaces 14a and 15a aligned with the tapered surface.

In the above structure, the introduction rails 3c, 3
First, as shown in FIG. 1, the transfer device 6 is moved to the standby rail 3a as shown in FIG. 1 in order to feed the pallet truck 51, which is supplied from d and is loaded onto the standby stations 3a and 3b and is on standby, into the tunnel kilns 1 and 2. , 3b on the right end side, and the guide rails 7a, 7 of the transfer device 6 are placed on the standby rails 3a, 3b.
Stop b at the aligned position. After that, the transfer dog (not shown) which is arranged between the standby rails 3a and 3b is driven to move the wheel 51a of the pallet truck 51 located at the right end toward the guide rails 7a and 7b. Reprint.

After the pallet truck 51 is loaded, one end surface of the pallet truck 51 is exposed to the fixed dog 8d and at the same time, as shown in FIG.
By setting the lock arm 11b of the lock device 11 shown in FIG.
Restrain the other end side of. As a result, the pallet truck 51
Even if it is not provided with a stopper or the like for restricting the rotation of the wheel 51a, the movement of the truck pallet 51 can be prevented by the restraint between the fixed dog 8d and the lock arm 11b.

When the pallet truck 51 mounted on the transfer device 6 is loaded into the tunnel kiln 1, the wheel 6c is rotationally driven by the electric motor 6d to run on the loading rails 4a and 4b, and the rail 1a of the tunnel kiln 1 is previously moved. Guide rails 7a on the two connecting rails 1b set between
Position so that 7b is aligned. As described with reference to FIG. 8, the clamp block 13 is installed on the work floor in advance so that it can be positioned on the connection rail 1b, and the cylinder 12a is stopped after the transfer device 6 is stopped at a predetermined position. Since the clamp block 13 is inserted into the engagement groove 12d of the block 12c, the positioning can be performed with high accuracy.

After this positioning, the cylinder 16 provided on the upper frame 6a can be opposed to the receiving block 14 provided on the work floor, and the wedge-shaped block 16b provided on the rod 16a of the cylinder 16 can be made to face these. It can be exposed to the pressure receiving surface 14 a of the receiving block 14.
Then, when the rod 16a is lowered, the wedge-shaped block 1
6b is wedge-engaged with the pressure receiving surface 14a, and the receiving block 14 can receive the force when the transfer device 6 tries to move to the right in FIG.

On the other hand, when the pallet truck 51 is mounted, the pusher rod 10a of the pusher cylinder 10 is
Is descending, the pressing portion 8c side of the dog 8a is set in a tilted posture as shown in FIG. 4, and is in a position where it does not interfere with the lower surface of the pallet truck 51. Also. The rod 9a of the cylinder 9 is retracted and the dog frame 8 is located at the right end of its stroke.

Here, after the position setting of the wedge-shaped block 16b with respect to the receiving block 14 is completed, the lock arm 1
When 1b is released and the rod 9a of the cylinder 9 is moved forward, the dog frame 8 connected to this rod 9a
Moves to the left in FIG. As a result of this movement, the fixed dog 8d pushes the right end of the pallet truck 5 in FIG.
While being transferred from a and 7b to the connection rail 1b side, they are carried into the tunnel kiln 1.

When the rod 9a of the cylinder 9 advances by its maximum stroke, the pallet truck 51 is loaded into the tunnel kiln 1 by a distance corresponding to this stroke. If the distance from the fixed dog 8d to the front surface of the pressing portion 8c of the dog 8a in the upright posture is smaller than the stroke of the rod 9a, when the rod 9a reaches its retracted position, the dog 8a is fixed. Is located on the rear side of the rear end of the pallet truck 51 that has already been sent out.

After the rod 9a is retracted, the rod 10a of the pusher cylinder 10 is lowered, and as shown in FIG. 8, the dog 8a pivots clockwise around the pin 8b by its own weight to raise the pressing portion 8c. Set the posture. Then, when the rod 9a is advanced again, the pressing portion 8c of the dog 8a abuts against the rear end of the pallet truck 51 and pushes it, as shown by the alternate long and short dash line in FIG. Therefore, the pallet truck 51 that has been fed to the tunnel kiln 1 side by the fixed dog 8d can be further advanced by the dog 8a, and the pallet truck 51 can be further pushed into the back of the tunnel kiln 1.

On the other hand, the pallet truck 51 in the tunnel kiln 1 is pushed in a bead shape by the newly loaded pallet truck, and is pushed out one after another from the carry-out port of the tunnel kiln 1.

After transferring the pallet truck 51 to the tunnel kiln 1, the rod 16a of the cylinder 16 is moved.
Is lifted to release the constraint between the wedge-shaped block 16b and the receiving block 14, and the wheel 6c is driven by the electric motor 6d.
1 is rotated and returned to the position where the guide rails 7a and 7b are aligned with the standby rails 3a and 3b shown in FIG. 1, whereby the transfer of one pallet truck 51 to the tunnel kiln 1 side is completed.

The transfer to the pallet truck 51 on the side of the tunnel kiln 2 can be carried out in exactly the same manner. By facing the wedge-shaped block 16b to the block 15, the pallet truck 51 is moved to the side of the tunnel kiln 2. It can be transferred by receiving the reaction force when pushing it into.

[0041]

According to the present invention, the transfer device can be moved in a direction intersecting with the loading direction of the tunnel kiln into the carry-in port. Therefore, for example, if the moving direction is set in a direction orthogonal to the tunnel kiln. By ensuring only the moving stroke of the transfer device, it is not necessary to expand the line in the extension direction of the tunnel kiln unlike the conventional equipment. Therefore, the area occupied by the line can be reduced, and maintenance and inspection of the line can be significantly simplified.

Further, in the case where the lock mechanism for restraining the pallet truck with the dog is provided, the pallet truck can be stably held even while the transfer device is moving, and the posture of the pallet truck at the time of loading into the tunnel kiln is also maintained. Proper maintenance and stable operation are possible.

Further, in the case where the transfer device is provided with a positioning mechanism, the position of the pallet carriage with respect to the carry-in port can be set correctly, and even if it is configured to be carried on a rail or the like, no wheel derailment occurs. In addition, in the case where the reaction force receiving mechanism is provided, even if the weight of the product placed on the pallet truck is large, the product can be stably supported by the reaction force receiving mechanism and reliable handling can be performed.

[Brief description of drawings]

FIG. 1 is a schematic view of a plane layout in which the transfer device of the present invention is applied to feed a pallet truck into a tunnel kiln.

FIG. 2 is a plan view when the transfer device is aligned with a reaction force receiver.

FIG. 3 is a vertical cross-sectional view taken along the line AA of FIG.

FIG. 4 is a front view of the transfer device as viewed in its traveling direction.

5 is a right side view of FIG. 4. FIG.

FIG. 6 is a cutaway view of a main part showing a change in posture of a dog provided at the tip of the dog frame.

7 is a view of the lock device for restraining and holding the pallet truck as seen in the direction of arrows BB in FIG.

8A and 8B are details of a clamp device for positioning the transfer device, in which FIG. 8A is a cutaway view seen in the traveling direction of the transfer device, and FIG. ) Is a partially cutaway view taken along the line CC of FIG.

FIG. 9 is a detailed front view of a main part showing a wedge-shaped block and a receiving block of the reaction force receiving mechanism.

[Explanation of symbols]

 1: Tunnel kiln 1a: Rail 2: Tunnel kiln 2a: Rails 3a, 3b: Standby rail 4a, 4b: Carry-in rail 5a, 5b: Carry-in rail 6: Transfer device 6c: Wheel 6d: Electric motor 7a, 7b: Guide rail 8 : Dog frame 8a: Dog 8d: Fixed dog 9: Cylinder 10: Pusher cylinder 11: Lock device 12: Clamp device 13: Clamp block 14: Receiving block 15: Receiving block 16: Cylinder 16b: Wedge block

Claims (4)

[Claims] 1. A transfer device, which receives a pallet trolley carrying a processing material from an external loading path and is arranged so as to be movable in a direction intersecting with a loading direction into a loading port of a tunnel kiln, A dog frame that has a dog that can be operated to engage or disengage the lower surface of the pallet truck and that can move in the loading direction, and a pallet truck that is arranged on the base end side of the dog frame. A transfer device provided in a tunnel kiln including a fixed dog that receives an end surface and a drive unit that moves the dog frame with a stroke longer than a distance between the dog and the fixed dog. 2. The lock device according to claim 1, further comprising a lock device that engages with a front end surface of the loading port in the loading direction and restrains the movement of the pallet truck together with the fixed dog in the loading direction. Transfer device for the tunnel kiln. 3. A positioning clamp block is arranged on a work floor midway of a movement path in a direction intersecting the loading direction, and positioning with respect to the carry-in port is enabled by engagement with these clamp blocks. The transfer device provided in the tunnel kiln according to claim 1 or 2. 4. A receiving block for receiving a reaction force is arranged on a work floor opposite to a loading direction of the dog frame, and is joined to the receiving block when the dog frame is in a position aligned with the carry-in port. Claims 1 to 3 enabled
Transfer device for the tunnel kiln described.