JPH08108233A - Cool transporting device for sheet material - Google Patents

Abstract

PURPOSE: To perform two processes in one by providing a conveyor for transporting a sheet material from a feeding part to a delivering part in a housing, immersing the material in transit in liquid nitrogen and thereby transporting the cooled sheet material into a press. CONSTITUTION: A sheet material W is fed into a housing 11 from an opening 47 in the feeding part 13, and a large number of upper rollers 19 and lower rollers 21 are synchronously rotated by the driving of a driving motor 23. The plural lower rollers 21 positioned in the center between the feeding part 13 and the delivering part 15 are immersed in liquid nitrogen, and the plural upper rollers 19 are partially dipped in it. The sheet material W is cooled into a state of very low temperature by the liquid nitrogen; sliding down on a chute 35 and passing a prescribed position on an inclined table 41, the material is detected by a passage detection sensor 45; and an oscillatory cylinder 37 is then actuated, oscillating the chute 35 upward and closing the opening 33 in the delivering part 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material cooling / conveying device for cooling a plate material such as an aluminum plate material or an aluminum alloy plate material to a cryogenic state, and for conveying the plate material in a carrying direction and sending it to a press machine. Regarding

[0002]

2. Description of the Related Art Plate materials such as aluminum plate materials and aluminum alloy plate materials are in an extremely low temperature state (-50 ° C to -196 ° C).
It is publicly known that mechanical properties such as tensile strength and elongation of a plate material are improved by cooling so that it becomes so that it is also known that low-temperature forming is carried out by a press machine on a plate material in an extremely low temperature state. (JP-A-4-300032, JP-A-6-47455). Therefore, when low-temperature molding is performed on a plate material, first, the plate material is put into a casing in which liquid nitrogen is stored and immersed in liquid nitrogen to be brought into an extremely low temperature state. Then, the plate material is taken out from the casing, and the plate material is appropriately conveyed by a conveying means such as a robot and sent to the press machine.

[0003]

However, in the conventional low-temperature forming, a step of cooling a plate material to an extremely low temperature state and a step of conveying the cooled plate material and sending it to a press machine are performed by separate steps. Therefore, it is difficult to take out the plate material cooled to the cryogenic state from the casing and then send it to the press machine in a short time. Therefore, the temperature of the plate material rises, it is not possible to perform the desired low-temperature molding,
There is a problem that the time during which desired low temperature molding can be performed becomes short.

[0004]

In order to solve the conventional problems as described above, in the present invention, as a first means, the plate material is cooled to an extremely low temperature and the plate material is conveyed in the conveying direction. In the plate material cooling / conveying device for delivering the plate material to the press machine, a housing for storing liquid nitrogen is provided on one side of the press machine. And a feeding portion for feeding the plate material from the inside of the housing. A conveyor that conveys the plate material in the conveying direction is provided over the ridge, and part of the conveyor is immersed in liquid nitrogen in order to immerse the plate material being conveyed in liquid nitrogen. And characterized by being configured.

As a second means, a plate material cooling / conveying device that cools the plate material to an extremely low temperature state and conveys the plate material in the conveying direction and sends it to the press machine is provided with a liquid on one side of the press machine. A housing for storing nitrogen is provided, and the housing is provided with a feeding portion for feeding a plate material into the housing at one end side and a feeding portion for feeding a plate material from inside the housing at the other end side. And, the delivery unit is configured to be located at a position higher than the liquid surface of the liquid nitrogen, and a conveyor for transporting the plate material in the transport direction from the input unit to the delivery unit in the housing is provided. The upper roller and the lower roller sandwiching from the vertical direction are provided in multiple sets in the carrying direction. Each upper roller and each lower roller is configured to be rotatable in the carrying direction. A plurality of lower rollers located at an intermediate portion of the feeding section and the delivery section so as to be totally immersed in the liquid nitrogen, and a plurality of upper rollers located at the intermediate section are partially immersed in the liquid nitrogen. It is characterized by being configured.

As the third means, in addition to the constitutional requirements of the second means, the lower roller is configured to be rotatable, and the upper roller is configured to be rotatable and driven by a drive motor. It is characterized by

As a fourth means, in addition to the constitutional requirements of the first to third means, the opening in the input portion and the opening in the delivery portion are each formed to have substantially the same size as the plate material. It is characterized by

As a fifth means, in addition to the constitutional requirements of the first to third means, the opening in the input section and the opening in the delivery section can be opened and closed. .

As a sixth means, in addition to the constitutional requirements of the third means, the sending section is provided with a shooter which is vertically swingable in order to open and close the opening in the sending section. When the opening in the delivery portion is opened, the tip end portion of the shooter is configured to be lowered, and a swinging operation device for swinging the shooter in the vertical direction is provided.

As a seventh means, in addition to the constitutional requirements of the sixth means, a position detecting sensor for detecting that the plate material conveyed by the driving of the conveyor is positioned on the shooter is provided. When the predetermined detection is performed by, the driving of the drive motor is stopped.

As an eighth means, in addition to the constitutional requirements of the sixth and seventh means, that the molded product has been carried out from the press machine, and that the slide in the press machine has returned to the top dead center. Also, when it is confirmed that the entire press machine is normal, the swing actuator is operated to swing the shooter downward.

As a ninth means, in addition to the constituent requirements of the sixth to eighth means, the shooter is swung downward to detect that the plate material slides down on the shooter and is fed from the shooter. A delivery detection sensor is provided, and when the delivery detection sensor performs a predetermined detection, the swing operation device is operated to swing the shooter upward. .

As a tenth means, in addition to the constituent features of the ninth means, the delivery detection sensor is disposed between the delivery section of the housing and the press machine, and is delivered from the delivery section. It is a passage detection sensor that detects that the plate material has passed.

[0014]

With the above construction, the plate material is loaded into the housing through the opening in the loading portion. According to the fifth to tenth means, the opening in the charging section is opened before charging the plate material, and the opening in the charging section is closed after charging the plate material.

After the plate material is loaded into the housing through the opening in the loading portion, the plate material can be transported in the transport direction by driving the conveyor and positioned at the delivery portion in the housing. Particularly, according to the second to tenth means, the plate material is conveyed in the conveying direction by rotating the upper roller and the lower roller in the conveying direction while sandwiching the plate material from the vertical direction by the upper roller and the lower roller. , The delivery portion in the housing (further, the shooter in the delivery portion in the sixth to tenth means).

Here, a part of the conveyor is constructed so as to be immersed in liquid nitrogen, and in particular, in the second to tenth means, a plurality of lower rollers located in the intermediate part between the feeding part and the sending part are provided with liquid nitrogen. Since the upper rollers located in the middle part are soaked in liquid nitrogen, the plate material is soaked in liquid nitrogen during transportation. The plate material can be cooled to a cryogenic temperature by liquid nitrogen. Further, before the plate material is put into the housing and before being immersed in liquid nitrogen, the plate material is pre-cooled by the nitrogen gas in the housing, while the plate material is discharged from the liquid nitrogen and before being discharged from the housing. The nitrogen gas in the housing keeps the temperature under cryogenic conditions.

In the eighth means, when the conveyed plate material is positioned on the shooter, the position detection sensor makes a predetermined detection to stop the driving of the drive motor.

After the plate material in the cryogenic state is positioned at the delivery portion in the housing, the plate material is delivered from the delivery portion to the press machine. In particular, according to the sixth to eleventh means, the shooter is swung downward by the operation of the swing actuating device so that the plate material in the cryogenic state is slid down on the shooter and sent out from the shooter to the press machine. Further, according to the eighth means, it is confirmed that the molded product has been carried out from the press machine, that the slide in the press machine has returned to the top dead center, and that the entire press machine is normal. , The rocking actuator is operated to rock the shooter downward so that the cryogenic plate material slides down on the shooter and is sent from the shooter to the press machine.

According to the fifth to eighth means, after the plate material in the cryogenic state is delivered from the housing, the opening in the delivery portion is closed. In particular, according to the tenth and eleventh means, when the plate material slides down on the shooter and is sent out from the shooter, a predetermined detection is made by the sending-out detection sensor, and the rocking actuator is operated to raise the shooter. It is swung in the direction to close the opening in the delivery section.

After sending the plate material in the cryogenic state to the press machine, the plate machine is subjected to desired press working by the press machine.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a plate material cooling / conveying apparatus 1 according to the present embodiment includes a plate material W such as an aluminum plate material or an aluminum alloy plate material in an extremely low temperature state (-50.degree. C. to -196).
The sheet material W is conveyed to the right (to the right in FIG. 1) and delivered to the press machine 3 while being cooled to (° C.). Here, the press machine 3 is a general press machine, and includes an upper die 5, a lower die 7, which are vertically opposed to each other.
The upper mold 5 is provided with a slide 9 that moves up and down integrally. Hereinafter, the plate material cooling device 1 will be described in detail.

A housing 11 for storing liquid nitrogen is provided on the left side of the press machine 3, and the housing 1
Reference numeral 1 is made of a heat insulating material. This housing 11
Is provided with a feeding portion 13 for feeding the plate material W into the housing 11 on the left end side and a feeding portion 15 for feeding the plate material W from inside the housing 11 on the right end side, respectively. Are arranged so as to be located at a position higher than the liquid surface of liquid nitrogen.

Inserting part 13 in the housing 11
A roller conveyor 17 for conveying the plate material W to the right is provided from the feeding section 15 to the feeding section 15.
7 includes a plurality of sets of upper rollers 19 and lower rollers 21 that sandwich the plate material W in the vertical direction in the horizontal direction. Here, the plurality of lower rollers 21 located in the intermediate portion between the input portion 13 and the delivery portion 15 are configured to be totally immersed in the liquid nitrogen, and the plurality of upper rollers 19 located in the intermediate portion are It is configured to be partially immersed in liquid nitrogen.

Here, each lower roller 21 is rotatable, and the plurality of upper rollers 19 arranged in the left-right direction are rotationally driven in synchronization by the drive motor 23 provided at an appropriate position of the housing 11. is there. That is, FIG. 2 and FIG.
As shown in FIG. 3, each lower roller 21 is integrally provided with a rotary shaft 25, and each rotary shaft 25 is rotatably supported by the housing 11. A rotary shaft 27 is integrally provided on each upper roller 19, and each rotary shaft 27 is rotatably provided on the housing 11. Left-right direction (front and back direction toward the paper in FIG. 2, left-right direction in FIG. 1)
In order to connect a large number of upper rollers 19 arranged side by side, each rotating shaft 27 is provided with an appropriate number of sprockets 29, and the sprockets 29 adjacent to each other on the left and right sides are connected via a chain 31. An appropriate rotary shaft 27 is linked to the drive motor 23 through a chain and a sprocket.

The upper roller 19 is urged downward by a urging means such as a spring. The sprocket 29 and chain 31 may be located inside the housing 11 as shown in FIG.
It may be located outside the housing 11 as shown in (b).

In order to open and close the opening 33 in the delivery section 15, the delivery section 15 is provided with a shooter 35 which is swingable in the vertical direction.
The tip of the shooter 35 is configured to be lowered when the shoe 3 is opened. The shooter 35 swings in the vertical direction by the operation of a swing cylinder 37 provided at an appropriate position.

Here, the swing cylinder 37 is connected to a control means (not shown) so that the molded product has been carried out from the press machine 3 and the slide 9 of the press machine 3 returns to the top dead center. When it is confirmed that the press machine 3 is operating normally and that the press machine 3 is operating normally, the shooter 35 is appropriately operated to swing the shooter 35 downward.
In addition, that the molded product has been carried out from the press machine 3,
The fact that the slide 9 has returned to the top dead center and that the press machine 3 as a whole is normal can be easily confirmed by an appropriate publicly known sensor (not shown) provided in the press machine 3.

At an appropriate position of the shooter 35, a position detecting sensor 39 for detecting that the plate material W conveyed by driving the roller conveyor 17 is positioned on the shooter 35.
Is provided. Here, the position detection sensor 39 is connected to the control means, and when the position detection sensor 39 makes a predetermined detection, the driving of the drive motor 23 is stopped.

The delivery section 15 in the housing 11
Between the press machine 3 and the press machine 3
There is provided an intermediate table device 43 provided with, and at a suitable position of this intermediate table device 43, it is confirmed that the cryogenic plate material W sent from the sending part 15 has passed a predetermined position on the tilt table 41. Passage detection sensor 45 for detecting
Is provided. Here, the passage detecting sensor 45 is connected to the control means, and when the passage detecting sensor 45 makes a predetermined detection, the swing cylinder 37 is operated to swing the shooter 35 upward. It is what makes me.

In order to open and close the opening 47 in the charging section 13, the charging section 13 can be swung in the vertical direction.
9, the lid member 49 is swung in the vertical direction by the operation of a swing cylinder 51 provided at an appropriate position of the housing 11.

On the left side of the housing 11 is provided a plate material charging device 53 for charging the plate material W into the charging section 13. The plate material feeding device 53 includes a plurality of rotatable support rollers 5.
5, a roller table device 57 and a drive motor 59
A pair of upper and lower pressing rollers 61, 63 which are rotated by driving
And a pinch roller device 65 equipped with.

Next, the operation of this embodiment will be described.

A robot (not shown) transfers a plate material W such as an aluminum plate material or an aluminum alloy plate material onto the supporting roller 55, and the upper and lower pressing rollers 6 are moved.
Position it between 1,63. Then, the swing cylinder 5
The lid member 49 is swung upward by the operation of No. 1 to open the opening 47 in the insertion portion 13, and the drive motor 5
The pair of pressing rollers 61 and 63 is rotated by driving 9 of FIG. As a result, the plate material W can be inserted into the housing 11 through the opening 47 in the insertion portion 13, and a part of the plate material W can be positioned between the upper roller 19 and the lower roller 21 on the left side of the roller conveyor 15. In addition,
After the plate material W is put into the housing 11, the lid cylinder 49 is swung downward by the operation of the swing cylinder 51.
The opening 47 in the charging unit 13 is closed.

Then, by driving the drive motor 23 of the roller conveyor 17, a large number of upper rollers 19 and a large number of lower rollers 21 are synchronously rotated in the right direction (conveying direction). As a result, the plate material W is conveyed to the right and the shooter 35 in the delivery portion 15 in the housing 11 is transported.
Can be located at.

Here, the plurality of lower rollers 21 located at the central portions of the input portion 13 and the delivery portion 15 are constructed so as to be totally immersed in the liquid nitrogen, and the plurality of upper rollers located at the intermediate portion thereof. Since 19 is partially immersed in the liquid nitrogen, the plate material W is immersed in the liquid nitrogen during transportation, and the plate material W is brought into an extremely low temperature state (-50 by the liquid nitrogen).
It can be made to cool so that it becomes (.degree. C. to -196.degree. C.). Further, before the plate material W is put into the housing 11 and before being immersed in the liquid nitrogen, the plate material W is pre-cooled by the nitrogen gas in the housing 11, while being discharged from the liquid nitrogen after being discharged from the liquid nitrogen. Before, the plate material W is kept warm by the nitrogen gas in the housing 11 under a cryogenic condition.

When the conveyed sheet material W is positioned on the shooter 35, a predetermined detection is made by the position detection sensor 39, and the driving of the drive motor 23 is stopped.

After the plate material W in the cryogenic state is positioned at the delivery portion 15 in the housing 11, the press machine 3
When it is confirmed that the molded product has been carried out from the machine, that the slide 9 of the press machine 3 has returned to the top dead center, and that the entire press machine 3 is normal, the rocking cylinder 37 is activated. The shooter 35 is swung downward, the plate material W in the cryogenic state is slid down on the shooter 35, and the shooter 35 sends it to the press machine 3.

When the plate material W slides down on the shooter 35 and is sent from the shooter 35 and passes a predetermined position of the tilt table 41, a predetermined detection is made by the passage detection sensor 45, and the swing cylinder 37 is operated. The shooter 35 is swung upward to close the opening 33 in the delivery portion 15.

After the plate material W in a cryogenic state is sent to the press machine 3, the plate machine W is subjected to a desired low temperature forming by the press machine 3.

According to the invention according to the present embodiment as described above, the step of cooling the plate material W to the cryogenic state and the step of transporting the cooled plate material W and sending it to the press machine 3 are performed in the same step. be able to. Therefore, the plate material W cooled to an extremely low temperature state can be delivered from the housing 11 to the press machine 3 in a short time, the time during which the desired low-temperature molding can be performed by the press machine 3 becomes long, and eventually the formability is improved. It is possible to improve.

Particularly, the plate material W in the cryogenic state is shoter 35.
It can be slid down above and can be easily delivered to the press machine 3, and the above-mentioned effect is further improved.

Further, since the charging part 17 and the discharging part 15 are respectively arranged at positions higher than the liquid surface of the liquid nitrogen, when the plate material W is charged into the housing 11 and the cooled plate material W is supplied. When the liquid nitrogen is delivered from the inside of the housing 11, liquid nitrogen does not spill out from the inside of the housing 11, and the working environment is improved.

By using the upper roller 19 as the driving roller and the lower roller 21 as the free roller, the sprocket 29 and chain 31 connecting the many upper rollers 19 and the driving motor 23 are not soaked in liquid nitrogen, and the sprocket is prevented. 29, the durability of the chain 31 is not impaired by liquid nitrogen.

Further, since the opening 47 in the input portion 13 and the opening 33 in the delivery portion 15 are both openable and closable, the outside air is prevented from entering the housing 11 as much as possible, and the housing 11, Rollers 19 and 2
It is possible to suppress the occurrence of dew condensation on No. 1 as much as possible, and to reduce the evaporation of liquid nitrogen as much as possible to reduce the amount of liquid nitrogen used.

In particular, when the cooled plate material W is delivered from the shooter 35, the shooter 35 immediately swings upward and the opening 33 in the delivery portion 15 can be closed, so that the above effect is further improved. Is.

After confirming that the molded product has been carried out from the press machine 3, the slide 9 in the press machine 3 has returned to the top dead center, and that the press machine 3 as a whole is normal, the plate material W is Since it is sent to the press machine 3, the plate material W cooled to a cryogenic temperature is not cold-formed and is not left in the press machine 3 for a long time, and the working efficiency of low-temperature molding is further improved. To do.

The rotation speed of the upper roller 19 can be controlled and the length of the housing 11 can be set according to the processing cycle of the press machine 3.

The present invention is not limited by the above description of the embodiments. For example, in addition to the structure in which the opening 47 in the input part 13 and the opening 33 in the delivery part 15 can be opened and closed, the opening 33 can be formed. , 47 to the plate material W (plate material W
It is possible to make an appropriate change such as setting the size to be substantially the same as the cross section in the direction orthogonal to the carrying direction in FIG.

[0049]

As can be understood from the above description of the embodiments, according to the present invention, a step of cooling a plate material to an extremely low temperature state and a step of conveying the cooled plate material and sending it to a press machine. The steps can be performed in the same step. Therefore, the plate material cooled to a cryogenic state can be delivered from the housing to the press machine in a short time, the time during which the desired low temperature molding can be performed by the press machine becomes long, and the formability is improved. You can

In particular, according to the invention described in claim 6, the plate material in a cryogenic state can be slid down on the shooter and easily sent to the press machine, and the above effect is further improved.

Further, since the charging part and the discharging part are respectively arranged at positions higher than the liquid surface of the liquid nitrogen, when the plate material is charged into the housing and when the cooled plate material is discharged from the housing. At times, liquid nitrogen does not spill out of the housing, improving the working environment.

According to the third aspect of the invention, the drive connecting mechanism connecting the upper roller and the drive motor is not immersed in the liquid nitrogen, and the durability of the drive connecting mechanism is not impaired by the liquid nitrogen. .

Further, according to the invention described in claim 4, the opening portion in the input portion and the opening portion in the delivery portion are made to have substantially the same size as the plate material, and are configured to have the minimum required opening width, According to the fifth aspect of the invention, since the opening in the input portion and the opening in the delivery portion can be opened and closed, the outside air is prevented from entering the housing as much as possible, and the housing, Condensation on the roller can be suppressed as much as possible, and the evaporation of liquid nitrogen can be minimized to reduce the amount of liquid nitrogen used.

In particular, according to the tenth or eleventh aspect of the invention, when the cooled plate material is delivered from the shooter, the shooter immediately swings upward and the opening in the delivery portion can be closed. Therefore, the above effect is further improved.

Further, according to the invention described in claim 8, the plate material cooled to the cryogenic state is not cold-formed and is not left in the press machine for a long time, and the working efficiency of the low-temperature molding is high. Is further improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a plate material cooling and conveying device according to the present embodiment.

FIG. 2 is a view taken along line II-II in FIG.

[Explanation of symbols]

 1 Plate Material Cooling and Conveying Device 11 Housing 13 Feeding Portion 15 Feeding Portion 17 Roller Conveyor 19 Upper Roller 21 Lower Roller 23 Drive Motor 35 Shooter 37 Sliding Cylinder 39 Position Detection Sensor 45 Passage Detection Sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication C21D 1/18 Y 11/00 105 C22F 1/04 A

Claims (10)

[Claims] 1. A plate material cooling / conveying device for cooling a plate material to a cryogenic state and for conveying the plate material in a conveying direction and delivering it to a press machine, wherein a housing for storing liquid nitrogen on one side of the press machine. The housing is provided with a feeding portion for feeding the plate material into the housing at one end side and a feeding portion for feeding the plate material from inside the housing at the other end side, respectively. Configured respectively to be located at a position higher than the liquid level of nitrogen, to provide a conveyor for conveying the plate material in the transport direction from the input portion to the delivery portion in the housing, in order to immerse the plate material being transported in liquid nitrogen, A plate material cooling / conveying device, characterized in that a part of the conveyor is soaked in liquid nitrogen. 2. A plate material cooling / conveying device for cooling a plate material to an extremely low temperature state and for conveying the plate material in a conveying direction and delivering it to a press machine, wherein a housing for storing liquid nitrogen on one side of the press machine. The housing is provided with a feeding portion for feeding the plate material into the housing at one end side and a feeding portion for feeding the plate material from inside the housing at the other end side, respectively, and the feeding portion and the feeding portion are provided. Each of them is arranged so as to be located at a position higher than the liquid surface of liquid nitrogen, and provided with a conveyor for conveying the plate material in the conveying direction from the input part to the delivery part in the housing, which conveys the plate material from the vertical direction. A large number of pairs of upper and lower rollers are provided in the carrying direction. Each upper roller and each lower roller are configured to be rotatable in the carrying direction, and are arranged in the feeding section and the sending section. A plurality of lower rollers located in the portion are soaked in liquid nitrogen as a whole, and a plurality of upper rollers in the intermediate portion are soaked in liquid nitrogen. Plate material cooling and transporting device. 3. The plate material cooling / conveying apparatus according to claim 2, wherein the lower roller is configured to be rotatable, and the upper roller is configured to be rotationally driven by a drive motor. . 4. The plate material cooling / conveying apparatus according to claim 1, wherein the opening portion in the input portion and the opening portion in the delivery portion are formed to have substantially the same size as the plate material. apparatus. 5. The plate material cooling / conveying apparatus according to claim 1, wherein the opening in the input section and the opening in the delivery section are configured to be openable / closable. 6. The opening in the delivery section is configured to be openable and closable, so that the delivery section is provided with a shooter that can swing in the vertical direction, and when the opening in the delivery section is opened, the shooter is opened. The plate material cooling / conveying device according to claim 3, wherein a tip end portion is configured to be low, and a swinging operation device that swings the shooter in a vertical direction is provided. 7. A position detection sensor for detecting that the plate material conveyed by driving the conveyor is positioned on the shooter is provided, and when the predetermined detection is made by the position detection sensor, the drive motor is driven. The plate material cooling / conveying device according to claim 6, wherein the plate material cooling / conveying device is configured to be stopped. 8. The shaking motion is confirmed when it is confirmed that the molded product has been carried out from the press machine, the slide in the press machine has returned to the top dead center, and that the entire press machine is normal. The plate material cooling / conveying device according to claim 6 or 7, wherein the shooter is configured to be swung downward by operating a moving device. 9. A delivery detection sensor is provided for detecting that the plate material has slid down on the shooter and is delivered from the shooter by swinging the shooter downward, and the delivery detection sensor performs predetermined detection. 9. Then, the plate material cooling / conveying device according to claim 6, wherein the rocking motion device is actuated to rock the shooter upward. 10. The delivery detection sensor is a passage detection sensor which is disposed between the delivery section of the housing and the press machine and which detects that the plate material delivered from the delivery section has passed. 10. The method according to claim 9,
The plate material cooling and conveying device described in.