JP3837977B2 - Hot rolled coil conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot-rolled coil transport device that transports a hot-rolled coil to the next process, for example, by remodeling an existing transport line, it is possible to increase capacity, increase efficiency, and improve coil quality. The present invention relates to a transport apparatus that is compact and inexpensive and that can be retrofitted with the shortest existing line outage.
[0002]
[Prior art]
Conventionally, there are many devices for conveying a hot-rolled coil to the next process. For example, there are the following apparatuses under conditions such as a conveyance capacity of 1500 tons / h, a conveyance pitch of 52 seconds / coil, and a maximum weight of 45 tons.
[0003]
(A) A conveyor device in which a coil conveyor saddle is attached to a chain conveyor chain and moves as a whole. Since this apparatus does not change the positional relationship between the coil and the saddle during conveyance, there is no possibility of wrinkles occurring in the coil during conveyance. Although the device is simple, there is a disadvantage in that when the coil function is stored or the buffer function is expanded, the captain has to be lengthened.
[0004]
(B) Loop bogie system in which a coil is transferred onto a bogie by a loop bogie trampo, crane, etc., and a plurality of bogies circulate and convey on a rail forming a loop. Since the positional relationship between the coil and the carriage during transfer does not change, the coil is not easily wrinkled. The cart conveys one coil at a time, but if the number of carts is increased, more coils can be conveyed and the buffer capacity is large. However, this method requires a return route, requires a large space, and is not suitable for modifying an existing system.
[0005]
(C) Shuttle transport cart This is a reciprocating transport cart system in which one cart reciprocates. Since the positional relationship between the coil and the carriage during conveyance does not change, there is an advantage that the coil is not easily wrinkled. However, it is necessary to adjust the conveyance pitch, the conveyance capacity is small, and the buffer function is also small.
[0006]
(D) Walking beam A walking beam system, such as exemplified in Japanese Utility Model Publication No. 3-74513, is a walking beam system that repeatedly moves up and down and deposits a coil in a fixed skid and sends it forward. ing. There is a case where wrinkles are generated during the conveyance, and there is a problem that the conveyance capability is small, a complicated lower device is required, and the cost is high.
[0007]
(E) A parent cart system having a child cart with an elevator. For example, it is also disclosed in Japanese Utility Model Laid-Open No. 4-67569, and is a parent-child cart system in which a child cart reciprocates between a skid and a parent cart, and the parent cart has a transfer function. Since the positional relationship between the coil and the carriage during transfer does not change, the coil is not easily wrinkled, but requires many sensors and actuators, has a complicated mechanism, and has a low transfer capability.
[0008]
(F) It is a connected cart system in which a cart with a coil deposited on a fixed skid of a cart having a connected cart fixed skid with a lifting function is connected and conveyed. Many coils can be transported simultaneously and provided with a buffer function, but there is a risk of wrinkles in the coils, and a hydraulic lifting device is required, which is expensive.
[0009]
(G) A pallet cart system in which the pawl of the towing vehicle pulls the pallet and moves while the pallet cart coil is placed on the pallet. There is no problem of generating wrinkles during coil conveyance, and the conveyance capacity is large. However, since many sensors and actuators are required, a return route is required and a large space is required, it is difficult to install around a coiler facility.
[0010]
(H) Pallet system A pallet is placed on an existing up-end conveyor, a pallet is placed on the pallet, and a coil is placed thereon for transport. Only pallet supply, collection and transportation equipment will be installed. Since there is no change in the positional relationship between the coil and the saddle during conveyance, there is no problem of wrinkles. The problem is how to return the palette.
[0011]
[Problems to be solved by the invention]
When the existing coil transfer line is rationally changed using these techniques, the following measures (1) to (5) can be considered.
(1) A combination of a plurality of chain conveyors and a plurality of transfer devices.
[0012]
This technique is excellent in terms of time cycle and buffer function, but is expensive and requires a long time for construction. Therefore, when improving the line, the downtime of the factory becomes excessive, and it is difficult to adopt it.
(2) Loop cart system This technology is also excellent in terms of time cycle and buffer function, but is expensive and requires a long time for construction. Moreover, there is a problem that the space for the loop carriage is necessary, and the space for the coil storage in the factory is reduced.
(3) Although the investment amount of the trampo (transfer device) and the down-end transfer device may be small, the time cycle is too long and it is difficult to achieve the transfer specification. (4) Walking beam device, transfer machine and down-end transfer device This technology has a long time cycle and a low transfer capability. Remodeling costs are also slightly higher.
(5) Shuttle carriage, transfer machine and down-end transfer device This technology has a good time cycle, but has a poor buffer function and a slightly large investment.
[0013]
The present invention has been made in consideration of the above-mentioned problems, and aims to develop and provide the most appropriate hot-rolled coil conveying device. That is, in the system that transports the hot-rolled coil to the next process in a down-end posture, it has a transport capability that matches the rolling pitch (1 to 2 minutes) and a buffer function that temporarily holds a large number of coils. An object of the present invention is to provide a low-cost transport device that has a simple structure, high reliability, low investment, and low cost.
[0014]
Moreover, when the semi-finished product coil taken up by the winding device of the coil production line is extracted from the winding device and delivered to the next process line, the direction of the coil is determined by the layout of the winding device. When the direction of inserting the coil into the uncoiler is different in the step of adjusting the direction of the coil depending on the unwinding direction in the next step, it is necessary to turn with an overhead crane or the like. When there are a plurality of production lines as the next process and the direction of the coil when the uncoiler is inserted is different in each production line, it is necessary to determine whether or not to turn the overhead crane with the overhead crane for each coil. When the overhead crane is operated manually, the work efficiency is lowered by the amount of the turning operation. Further, there is a problem that the handling cycle time becomes long even when turning is performed by an automatic crane. Therefore, another object of the present invention is to provide an apparatus capable of changing the direction of the coil in accordance with the handling direction of the next process.
[0015]
[Means for Solving the Problems]
The present invention has been made in order to solve the above-mentioned problems, and the technical means thereof includes a chain conveyor having a conveying table on which a hot-rolled coil can be placed in a down-end attitude for conveying the hot-rolled coil in a down-end attitude. A down-end transfer device provided with a pallet carriage disposed in the next stage of the chain conveyor and transported in a direction perpendicular to the conveyor; and a transfer mechanism for transferring a coil from the chain conveyor to the down-end transfer device; A turner that can change the direction of the coil according to the handling direction corresponding to the coil unwinding direction of the next process at the transfer start part of the down-end transfer device, and further the coil winding of the next process Netsunobeko characterized the computer to determine the direction out, that a control device for pivoting the Turner based on the judgment A le transport device.
[0016]
A chain conveyor with a carriage can be placed without changing the direction in the same posture as the down-end posture where the coil is removed from the winder, and there is no restriction on the placement timing. It can be loaded, has no problem of coil flaws, and has a buffer function. Further, since the down-end transfer device provided with the pallet carriage transfers the coil mounted in the same posture, the transfer machine becomes simple, and the reliability of the device as a whole is the best.
[0017]
Moreover, this invention is equipped with the turner which changes the direction of a coil in the transfer start part of a down end transfer apparatus. The turner is a device that is provided at the position of the front end of the transfer line, and rotates the coil around the vertical axis while the coil is placed at the down end. After the coil winding is completed, the necessity of turning the turner is determined according to the information of the next process. Based on this decision, a control device that turns the turner is installed.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the entirety of a hot-rolled coil conveyance device according to an embodiment of the present invention. The hot rolling line 50 includes winding devices 51, 52, and 53 that wind a rolled plate at the tail end thereof, and winds the rolled plate alternately. It is necessary to sequentially take out the coils 51, 52 and 53 of this winding device in a timely manner and transport them to the next step.
[0019]
The hot-rolled coil transfer device of the present invention includes a chain conveyor 10, a down-end transfer device 30 (pallet carriage 31) disposed in the next stage, and a transfer machine 20 provided in the middle thereof. Further, a turner 40 is provided.
[0020]
The wound hot rolled coils 71, 72, 73 are placed on the fixed skids 61, 62, 63, respectively, and then the coil cars 81, 82, 83 are placed on the chain conveyor 10. The chain conveyor 10 carries the placement coils 11, 12, and 13 in a down-end posture on the carriage 15 (see FIG. 2) and conveys them in the direction of travel 14. The chain conveyor 10 can mount a coil at any time, and can always cope with the coil conveyance timing. Since the chain conveyor 10 does not change the contact position between the coil and the conveyor during coil conveyance, there is no problem of causing wrinkles in the coil during conveyance.
[0021]
FIG. 2 shows a side view of the chain conveyor 10 and shows a state in which the coils 11, 12, and 13 are placed on the mounting table 15 and conveyed in a down-end posture.
[0022]
A down-end transfer device 30 is provided at the next stage of the chain conveyor 10. As shown in a side view in FIG. 3, the down-end transfer device 30 includes a pallet carriage 31 that conveys the coil in the same down-end posture as that on the chain conveyor, and travels by wheels 32. If the down-end transfer device 30 is provided so as to be conveyed in a direction orthogonal to the chain conveyor 10, the arrangement of the conveyance system is preferably compact.
[0023]
In particular, as shown in FIG. 1, when the chain conveyor 10 has a length only while the coiler is provided on the side, it is conceivable that the length of the machine is short and the buffer function is remarkably reduced. This problem is solved by extending the cart 31). In addition, the problem of space can be solved by providing the pallet carriage 31 after it has been removed from the coiler. In addition, when remodeling existing equipment, it is possible to install the transfer device at a position orthogonal to this while operating the existing equipment, so the downtime of the factory for remodeling can be minimized. .
[0024]
The transfer machine 20 which transfers a coil from the chain conveyor 10 to the down end transfer apparatus 30 is provided. The transfer machine 20 does not require a coil turning device or the like because the coil is transferred in the same posture with the coil being down-ended. However, if necessary, the coil may be changed in the 90 ° direction in the down end posture or changed to the up end posture.
[0025]
Next, the turner will be described. FIGS. 4A and 4B show two coils 16 and 17 that indicate the directions of the coils placed on the pallet carriage 31, respectively. The coils 16 and 17 have a winding direction different from each other by 180 degrees. This unwinding direction must be adjusted to either direction when it is inserted into the uncoiler in the next step. FIG. 5 is a plan view of a transfer start portion of the down-end transport device 30, and FIG. 6 is a view taken along the line AA. The down-end conveyance device 30 carries the coils 16, 17,... On the pallet carriage 31 for conveyance. The pallet carriage 31 moves in the direction of arrow 33 and returns to the direction of arrow 35 along the empty pallet conveyance line 34. The returned pallet carriage 31 is changed in direction by ± 90 degrees by the pallet turner 45, proceeds to the position of the coil turner 40, further changed in direction by ± 90 degrees, and sent to the line of the down-end transport device 30. At this time, whether to turn +90 degrees or -90 degrees is determined by the computer determining a necessary direction (for example, coil unwinding direction) in the next process of the coil. As a result, smooth processing in the next process can be performed, and the turning operation of the coil by a crane or the like is not required.
[0026]
The hot-rolled coil conveyance device of the present invention can mount and convey the coil completely corresponding to the rolling pitch, has a buffer function, is highly reliable, and is inexpensive. Further, there is an advantage that the flow of coil conveyance is smooth, there is no waiting time, and it is easy to achieve full automation. Moreover, the direction of the coil can be quickly adjusted by appropriate processing of the turner.
[0027]
【The invention's effect】
The hot-rolled coil conveyance device of the present invention is configured as described above, and the chain conveyor and the down-end transfer device are arranged in the orthogonal direction and the transfer machine is provided. In addition, the period during which the existing line is stopped can be minimized. Moreover, it has the conveyance capability which matched the rolling pitch (1-2 minutes), and there exists an outstanding effect that it is highly reliable with a simple structure, there is little investment, and it is cheap. In addition, since the turner for adjusting the direction of the coil to meet the requirements of the next process is provided at the transfer start position of the down-end transfer device, the operation of changing the direction of the coil can be performed easily and accurately.
[Brief description of the drawings]
FIG. 1 is a plan view showing a hot-rolled coil conveyance device according to an embodiment.
FIG. 2 is a side view of a chain conveyor.
FIG. 3 is a side view of the down-end transport device.
FIG. 4 is an explanatory diagram of a direction of a coil.
FIG. 5 is a plan view of a transfer start unit of the down-end transport device.
6 is an AA arrow view of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Chain conveyor 11, 12, 13 Placement coil 14 Advancing direction 15 Placement stand 16, 17 Coil 20 Transfer machine 30 Down end conveyance apparatus 31 Pallet carriage 32 Wheel 33 Arrow 34 Empty pallet conveyance line 35 Arrow 40 Turner 45 Pallet turner 50 Rolling line 51, 52, 53 Winding device 61, 62, 63 Fixed skid 71, 72, 73 Hot rolled coil 81, 82, 83 Coil car

Claims (1)

A chain conveyor having a conveying table on which a hot-rolled coil can be placed in a down-end attitude for conveying the hot-rolled coil in a down-end attitude, and a pallet carriage arranged in the next stage of the chain conveyor and conveyed in a direction perpendicular to the conveyor Down end transfer device, a transfer mechanism for transferring a coil from the chain conveyor to the down end transfer device, and a handling direction corresponding to the coil unwinding direction of the next process at the transfer start portion of the down end transfer device A turner that can change the direction of the coil to match the coil direction, a computer that determines the coil unwinding direction in the next process, and a control device that turns the turner based on the determination A hot-rolled coil conveyance device.

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