JPH0550408B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a coil conveying device mainly used in steelworks, and more specifically, the present invention relates to a coil conveying device used mainly in steel works.
The present invention relates to a transfer control device for a coil transfer device having a chain conveyor that is pulled by a chain via a detachable dock.

(b) Conventional technology Conventionally, coil conveyors have two methods: a method in which a predetermined link plate of a chain conveyor is shaped so that a coil can be placed thereon, and a method in which the coil is directly conveyed by the chain conveyor, and a method in which the coil is directly conveyed by the chain conveyor, and a method in which the coil is conveyed directly on the chain conveyor; There is a method in which a trolley is placed on the trolley and the trolley is pulled by a chain.

Further, as shown in Japanese Utility Model Application Publication No. 60-42407, the coil loading cart is configured to be pulled by a conveyor chain having a pushchair dock,
A coil storage conveyor has also been devised in which a positioning fixing device for fixing and holding the cart and a chain pusher engaging/disengaging device for engaging and disengaging the cart and the pushers are disposed at the same intervals as the chain pusher pitch.

(c) Problems to be solved by the invention In any of the coil conveyors, coils are conveyed by tact feeding that stops at a predetermined position to place or take out the coils, but the above-mentioned direct loading method and coil conveyor Directly connected traction chain conveyor
Each time the chain is stopped or driven, the acceleration of the heavy coil acts on the chain, causing the chain to elongate considerably at a relatively early stage. As a result, these types of coil conveyors require the chain to be rotated forward and backward to adjust the stopping position in order to accurately stop the coil at a predetermined position, which causes time loss in the coil conveyance process and This is causing power loss.

On the other hand, in the above-mentioned coil storage conveyor, the coils can be relatively easily stopped at a predetermined position using a positioning and fixing device. In order to drive multiple carts carrying heavy coils at the same time,
A large concentrated starting force is required at the start of transport. For this reason, an extremely large power source is required, and a large impact load is applied to the chain, so a robust chain is required, and the life of the chain is relatively short.

Therefore, the present invention is capable of easily and accurately positioning and fixing a coil in a predetermined position, while
It is an object of the present invention to provide a transfer control device for a coil transfer device that eliminates the above-mentioned drawbacks by dividing the carts into predetermined groups and transferring them.

(d) Means for solving the problem The present invention has been made in view of the above-mentioned circumstances, and as shown in FIG. It has a conveyor 1 consisting of a chain 7 which is wound between sprockets 12 and 13 and has a pusher dock, and further includes a plurality of stations A, for example, 10 stations.
-J are provided with a carriage positioning and stopping device for stopping and holding the carriage and a dock engagement/disconnection device for engaging and disengaging the push dock from the carriage. Each station A to J has a predetermined number of groups, for example H, I, J,
Three sets of E, F, G and B, C, D,,
, and A, each group is treated as one unit, and the push dock engagement/disengagement device and the cart positioning/stopping device are controlled for each group.

In particular, as shown in FIG.
A conveyor system consisting of a sub-conveyor 5 and an empty car return conveyor 3 is desirable. Specifically, as shown in detail in FIG. 3, the preliminary conveyor 2 consists of a truck 6 and a chain 9 that is wound around sprockets 15 and 16 and has a pusher dock. Whereas it is a progressive conveyor with J.
The preliminary conveyor 2 is composed of a rapid conveyor that transports the cart 6 on which the coil 8 is placed from the loading position K to the transfer position L to the sub-conveyor 5. Similarly, the sub-conveyor 5 also has a trolley 6 and a sprocket 1.
The sub-conveyor 3 consists of a chain 10 which is wound around the conveyor belts 7 and 19 and has a pusher dock, and while the transport conveyor 1 and the preliminary conveyor 2 are composed of one chain, the sub-conveyor 3 is composed of two chains. Therefore, the sub-conveyor 5 is located between the transfer conveyor 1 and the backup conveyor 2, and the cart 6 can be transferred from the backup conveyor 2 to the transfer conveyor 1 without interfering with the transfer. In addition, the above conveyor 1,
The preliminary conveyor 2 and the sub-conveyor 5 have their upper conveyance paths on the same horizontal plane, that is, the rails for running and guiding the trolley 6 and the upper traveling paths of the chains 7, 9, and 10 on the same horizontal plane. Furthermore, as shown in detail in FIG. 4, the empty car return conveyor 3 is located below the conveyors 1, 2, and 5, and is composed of a chain 11 having a rail and a pushchair dock for suspending and supporting the car 6. Furthermore, the chain 11 is connected to the discharge side sprocket 13 of the conveyor 1.
It is wound around the sprocket 20 located at the sprocket 20 located at the inlet side sprocket 15 of the preliminary conveyor 1, and the sprocket 21 located at the inlet side sprocket 15 of the preliminary conveyor 1.
2, the empty truck can be transferred to the return conveyor 3,
Furthermore, the feeder 23 is attached to the introduction side sprocket 15.
can be transferred from the return conveyor 5 to the standby conveyor 2.

(e) Effect Based on the above configuration, as shown in Fig. 3, the trolley 6 of the spare conveyor 2 waiting at the loading position K
Then, the coil 8 is loaded from a transport device such as an overhead crane. Then, the pusher dock of the spare conveyor 2 is engaged, and the trolley 6 is run in the direction of the arrow.
If there is another truck at the transfer position L, the truck 6 will be brought to an emergency stop at the previous M position, and if there is no preceding truck at the transfer position L, the truck 6 will pass through the M position and move onto the sub-conveyor. 5 and is transported to the transfer position L. At this time, when it is confirmed by the sensor that the coil truck 6 has passed the position N, feeding of the empty truck from the empty truck return conveyor 3 to the loading position K by the feeder 23 is started. If there is a preceding truck at the first station A of the conveyor 1, the sub-conveyor 5 is stopped and the coil truck 6 is moved to the transfer position L.
However, when there are no preceding carts at the first station A, the sub-conveyor 5 is activated and the coil cart 6 is transported to the first station A.

Then, as shown in detail in FIG. 1, on the conveyor 1, the coil cart 6 is transported from the sub-conveyor 5 to the first station A, and the coil cart 6 is filled in each of the ten stations A to J. It is fixed with a trolley positioning and fixing device. In this state, the coil can be unloaded from the cart 6 at any station, but the coil is always unloaded at the last station J. For example, a coil having a predetermined thickness, width, inner diameter, and outer diameter is unloaded at station H, and other types of coils are unloaded at station J. and,
When the unloading is completed, the conveyor 1 is started and runs, and then the trolley positioning and fixing devices of each station H, I, and J in the first set are released, and the pusher engaging/disengaging device is activated to raise the pusher dock. and each cart 6 is sent one pitch,
It is fixed with a trolley positioning and fixing device. That is, the empty cart at the last station J is sent to the empty car return conveyor 3, the cart at station I is sent to station J, and the cart at station H is sent to station I, respectively. Then, the push docks of the stations E, F, and G in the second set are raised, and each carriage is moved one pitch and fixed by a carriage positioning device. That is, the cart of station G is sent to station H, the cart of station F is sent to station G, and the cart of station E is sent to station F. Thereafter, in the same way, the carts of the third set of stations B, C, and D are each moved one pitch by the pusher dock, and the cart of station D is moved to station E.
, the trolley from station C moves to station D,
The carts of station B are each sent to station C and fixedly held by a cart positioning device. And Station B, which has become an airspace.
Then, the pushchair dock of station A in the fourth set is raised and the cart of that station is sent, and station A becomes airspace. In this state, the cart 6 is transferred from the sub-conveyor 5 to the station A.

Further, as shown in FIG. 4, the empty truck 6 from the station J on the transport conveyor 1 is sent to the empty truck return conveyor 3 via a sprocket 13 and a feeder 22. The return conveyor 3 is continuously operated, and the empty cart is continuously driven and stored until it collides with the preceding cart in an inverted state. Furthermore, when the loaded position K of the spare conveyor 2 becomes empty, the stored empty carts have their stoppers removed from their tips, are sent to the sprocket 15 of the spare conveyor 2 by the feeder 21, and are fed one by one to the loaded position K. It will be done.

(F) Embodiments Examples of the present invention will be described below with reference to FIGS. 5 to 12.

Note that the transport conveyor 1, the preliminary conveyor 2, and the sub-conveyor 5 use the same chain except that the sub-conveyor 5 differs in the number of chain threads.
Only the transport conveyor 1 will be described, and the description of the other conveyors will be omitted.

As shown in FIG. 5, the conveyor 1 has a conveyor chain 7, and a truck rail 30 and a chain rail 31 disposed on a base 29.
has. As shown in FIGS. 6 and 7, the chain 7 includes an inner link 32 and an outer link 33 connected endlessly by a pin 35.
5 protrudes outward from the plate, and rollers 36, 36 are rotatably supported. Further, a pin 39 is disposed on the link plate 32a of the predetermined inner link 32, and a plate 41 constituting the pusher dock 40,
41 is rotatably supported. Said plaid 4
1 is a dock engaging surface 41a, a jaw portion 41b, and a leg portion 41.
Both plates 41 are connected to each other by bolts 42 on the engagement surface 41a, and the arm 45 is connected to the arm 45 by a pin 43 provided on the protrusion 41d. is rotatably supported. The arm 45 is urged by a spring (not shown) so as to come into contact with a stopper 46 installed on the plate 41.
At the biased position, the tip engaging surface 45a is connected to the carriage 6.
Hold the axle 56 between the two. Further, a pin 47 is arranged at the tip of the leg portion 41c of the plate 41, as shown in detail in FIG.
Also, sub rollers 50, 50 are rotatably supported by both protruding portions. Furthermore, link plate 3
A stop pin 51 is disposed on the stop pin 51, and when the rollers 49 and 50 are not in contact with a rail 52, which will be described later, the plate 41 is in a dock non-engaging position (the dock non-engaging position) where the jaw 41b comes into contact with the stop pin 51 due to gravity. (see chain line in Figure 7).

On the other hand, the chain rail 31 is made of steel having a U-shaped cross section, and rollers 36 at both ends of the chain 7 are fitted and guided by the two rails 31, respectively. Further, a dock control rail 52 is installed at a lower intermediate position between these rails 31, 31, and the main roller 49 of the dock plate 41 rolls on this rail 52. As shown in FIG. 9, the control rail 52 is divided at each of the stations A to J, K, and L, and the dock engaging/disengaging rail portion 52a is connected to a vertical plane by a pin 75 so as to cross the divided point. A dock engaging/disengaging device 76 is configured to be swingably disposed at. Furthermore, a control arm 77 is disposed below the rail portion 52a so as to be able to swing freely on the base 29, and the arm 77 is in contact with the lower surface of the rail portion 52a with a roller 77a at its tip, and also It is connected to cylinder 79. A dock position sensor 80 and a dock lowering limit sensor 81, which are made of a phototube and a reflector, are arranged facing the control arm 77. 52a is connected to the rail 52, and the lower limit sensor 81 detects the position where the control arm 77 has fallen and the rail portion 52a has definitely come off, and the air cylinder 79 is controlled based on these detection signals. Further, the rails 31 are disposed not only in the carriage feeding direction, that is, in the upper position but also in the lower position, and guide the chain 7 except for the sprocket position. In addition, in the return direction (lower position) of the chain 7, the dock plate 41 is held in a hanging position where the pin 47 portion contacts the plate 32a, as shown in the lower part of FIG. 6, and is returned.

Furthermore, as shown in FIG. 10, a cart positioning and fixing device 82 is provided at each station A to J, K, and L. The trolley positioning and fixing device 82 is
The base 29 is located laterally to the rails 30, 30.
It has clamping arms 84, 85 which are swingable in a horizontal plane by support shafts 83, 83 which are erected thereon. These clamping arms 84 and 85 can clamp the trolley 6 in the front and back direction by means of rollers 84a and 85a provided at their tips, and are connected by a connecting link 86 so as to swing toward or away from each other. . Further, an air cylinder 87 is connected to the base end of one of the clamping arms 84, and is configured to move both clamping arms 84, 85 by a predetermined amount to position and hold the cart 6 at a regular position. There is.

Further, as shown in FIGS. 5 and 6, the truck 6 consists of an underframe 53 connected by beams and frames 55 projecting upward at the four corners of the underframe 53. Axles 56, 56' are supported in the front and rear parts, and the front axle 56 (or rear axle)
extends through the underframe 53 and is adapted to engage the dot 40. Rolling rollers 57 are rotatably supported on both protruding end portions of the axle 56, and side rollers 58 are rotatably supported on pins installed vertically from the underframe 53. , these rollers 57 and 58 roll on the truck rail 30, and the axle 56 engages with the pusher dock 40, so that the truck 6 travels. Furthermore, the rear end of the trolley 6, specifically the underframe 53
An L-shaped tail metal fitting 54 is installed at the center of the rear beam, and a shock absorber 6 is installed at the front end of the truck 6, more specifically, at a portion away from the center of the front beam.
4 are installed.

Note that the rails 30 are continuously installed above the preliminary conveyor 2 through the sub-conveyor 5 to the transfer conveyor 1 at the same level. In addition, as shown in FIGS. 5 and 6, the bogie deceleration proximity switch 90 and the bogie position proximity switch 90 are installed only near each station A to J or near the stations J, G, D, and A at the tip. switch 9
1 extends from the base 29;
These proximity switches 90, 91 detect the dot 93 provided on the truck 6, decelerate the chain 7, and stop the chain 7.

On the other hand, the empty truck return conveyor 3 includes a chain 11, a guide rail 59 for the chain, and a truck rail 60 installed along the lower running portion of the chain 11, as shown in FIGS. 5 and 11. . Chain 11 has an inner link 61 and an outer link 62
and a pin 63 connecting these links 61 and 62
Flange rollers 65, 65 are rotatably supported on the protruding portion of the pin 63. Furthermore, as shown in detail in FIG. 12, the predetermined inner link plates 66, 66 of the chain 11 are formed with a protrusion 66a at the leading end in the direction of movement, and a pin 67 is fixed to the protrusion 66a. ing. An arm 70 constituting a pusher dock 69 is rotatably supported on the pin 67 via a bearing, and the arm 70 has an engagement recess 70a formed at its tip and a plate at its tip. The rotating position is regulated by abutting against a stopper 71 fixed to 62a. Furthermore, the lower end surface of the dock arm 70 is a tapered surface 70b,
When the tapered surface 70b comes into contact with the tail metal fitting 54 at the rear end of the truck 6, the recess 70a is disengaged from the axle 56. On the other hand, the trolley rail 60 is connected to the base 2
The rolling rollers 57 of the truck 6 are fitted and guided into the U-shaped rails 60, 60, and side rollers are provided on the side end faces thereof. 58 is transferred. Also,
The chain rails 59, 59 are also made of a pair of shaped steel having a U-shaped cross section, and extend along the upper and lower running paths of the chain excluding the sprocket portion, and guide and support the flanged rollers 65, 65.

Since the present embodiment has the above-described configuration, the coil loading cart 6 fast-forwarded by the preliminary conveyor 2 and the sub-conveyor 5 is transferred to the first station A on the transport conveyor 1 and further to the second to tenth stations. The carriage is stopped and held at points B to J by a carriage positioning and fixing device 82. In this state, the dock engagement/disengagement rail 52a is in the lowered position with the cylinder 79, the dock 40 does not engage with the axle 56, and even though the chain 7 is moving idly, the trolley 6 is reliably stopped.
Retained. In this state, the predetermined trolley 6
After the coil 8 is unloaded and the positioning fixing device 82 is released, the docking and disengaging devices 76 in the first set of stations H, I, and J are activated. That is, the air cylinder 79 is extended, the control arm 77 is moved to the upright position, and the dock engagement/disengagement rail portion 52a is connected to the rail 52. Then, as shown in FIG. 6, the dock plate 41 is projected upward by the rollers 49 rolling on the rails 52. In this state, press the button 4 of chain 7.
When the 0 portion reaches the axle 56 of the truck 6, the arm 45 resists the spring and escapes downward, and the axle 56
is guided and brought into contact with the engaging surface 41a of the dock plate 41. As a result, the carriage 6 is driven by the engagement of the dock 40 and sent to the next station.
When the bogie deceleration proximity switch 90 is turned on at the station proximity position, the traveling of the chain 7 is decelerated, and when the bogie position proximity switch 91 is further turned on, the drive is stopped near the bogie positioning device 82. In this state, the truck 6 and the chain 7 move further due to inertia, but the dock engagement device 7
The air cylinder 79 of No. 6 contracts and the rail portion 52a
swings downward, the connection with the control rail 52 is released, the engagement between the dock 40 of the chain 7 and the axle 56 of the bogie 6 is released, and then the air cylinder 87 of the bogie positioning and fixing device 82 is released. It extends and swings both clamping arms 84 and 85 toward each other. Then, the trolley 6 is moved by a predetermined amount with its front and rear sides being held, and is held fixed at an accurate position. After that, similarly, the second set of stations E,
Each truck 6 at F, G is moved one pitch, then each truck at the third set of stations B, C, D is moved one pitch, and the truck at station A of the fourth set is moved one pitch. The deceleration and stopping of the chain is performed using station G as a reference for the feeding of stations in front of a predetermined set of stations, for example, stations H, I, and J, and for stations E, F, and G. Station D is used as a reference, and station A is used for stations B, C, and D.
The accuracy of the next set of tact feeding is ensured by using this as a reference.

Further, the empty truck 6 sent from the 10th station J is held by the sprocket 13 together with the chain 7, reaches the lower part of the sprocket, and is further conveyed to the empty truck return conveyor 3 by the air feeder 22. In the return conveyor 3 section, the carriage 6 is in the reverse position, the rollers 57 are fitted and guided by the U-shaped rails 60, and the chain 11 is further inserted as shown in FIG.
The dock plate 70 rotates downward around the pin 67 due to gravity, and the carriage 6 is inserted into the engagement recess 70a.
axle 56 is engaged. Then, the trolley 6 is pulled by the continuously running chain 11 and transported together with the chain 11. The cart 6 is stored at a stopper at the tip of the conveyor 5, but as shown in FIG. The surface 70b comes into contact with the tail metal fitting 54 of the leading truck, the plate 70 rotates upward, the engagement between the recess 70a and the axle 56 is released, and the shock absorber 64 at the tip of the truck comes into contact with the leading truck and stops. do. Then, the truck 6 is transferred from the tip of the empty truck return conveyor 3 to the sprocket 15 of the spare conveyor 2 by the air feeder 23, and waits at the loading position K of the spare conveyor 2 to be loaded with a coil.

(g) Effects of the Invention As explained above, according to the present invention, the pusher dock engagement/disengagement device 76 for controlling engagement/disengagement of the pusher dock 40 is provided at each station A to J, and the cart positioning/fixing device 82 is installed. ,
Although the coil truck 6 can be accurately stopped at a predetermined position, each of the stations A to J is divided into a predetermined number of groups, and the pusher dock engagement/disengagement device 76 and the truck positioning/stopping device 82 are controlled for each group. Since a large number of carts 6 are divided into groups and transported, the starting force of the transport conveyor 1 is dispersed, preventing a large driving force from concentrating at one time, and reducing the power source to a small one. At the same time, the load acting on the chain 7 can be reduced, the chain can be made smaller, and it can have a longer life.

Moreover, if the coil conveyance device S is composed of the conveyor 1, a spare conveyor 2, a sub-conveyor 5, and an empty car return conveyor 3, the conveyor 1
A short installation distance is sufficient, and by appropriately setting the length of the spare conveyor 2, a rational conveyor system suitable for the factory can be easily designed. 76 can be set to the necessary minimum, making it possible to significantly reduce costs.Furthermore, the station interval can be set short, and in combination with the existence of spare conveyor 2, which is a fast-forwarding conveyor, the coil conveyance time can be shortened. . In addition, from the carriage discharge section 13 of the conveyor 1 to the carriage introduction section 1 of the preliminary conveyor 2.
An empty car return conveyor 3 consisting of a storage conveyor is installed over the 5th stage, and together with the reduction in the number of stations based on the spare conveyor 2, the number of carts can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a conveyor according to the present invention, FIG. 2 is a schematic diagram showing the entire coil conveying device,
FIG. 3 is a schematic diagram showing the backup conveyor, and FIG. 4 is a schematic diagram showing the empty car return conveyor.
5 to 12 are views showing embodiments of the present invention, in which FIG. 5 is a sectional view taken along the line in FIG. 2, FIG. 6 is a side view showing the conveyor, and FIG. FIG. 8 is an enlarged side view showing the dock portion, and FIG. 8 is a sectional view taken along the line of FIG. 7. Furthermore, FIG. 9 is a side view showing the dock engaging/disengaging device, and FIG. 10 is a plan view showing the cart positioning and fixing device. and,
FIG. 11 is a side view showing the empty car return conveyor, and FIG. 12 is an enlarged side view showing the dock portion thereof. 1... Transfer conveyor, 2... Spare conveyor, 3
...Empty truck return conveyor, 5...Sub conveyor,
6...Dolly, 8...Coil, 7, 9, 10, 11
... Chain, 13 ... Cart discharge part (sprocket), 15 ... Cart introduction part (sprocket), 3
0, 60...Rail for truck, 31...Rail for chain, 40...Pushy dock, 52...Dock control rail, 52a...Dock engagement/disengagement rail portion, 69...Pushy dock, 76...Dock engagement/disengagement device , 77... control arm, 82... bogie positioning and fixing device, 84, 85... clamping arm, ~
... Group, A to J ... Station, K ... Coil mounting position, L ... Cart transfer position, S ... Coil transfer device (conveyor system).

Claims (1)

[Scope of Claims] 1. Consists of a trolley on which a coil can be placed and travels guided by rails, and a chain having a pusher dock that engages and disengages from the trolley, and the trolley is pulled by the chain by engagement of the pusher dock. , and a coil transfer device configured to release the traction by the chain when the dock is detached, the transfer device having at least a conveyor that transports the cart in tact and fixes and holds the cart at a number of stations. and a pusher dock engaging and disengaging device for controlling the engagement and disengagement of the pusher dock for each of the stations, as well as a cart positioning and stopping device, and further dividing the stations into a predetermined number of groups, each of which A transfer control device for a coil transfer device, characterized in that it is configured to control the pushchair dock engagement/disengagement device and the cart positioning/stopping device, and transports a large number of carts in groups. 2. The transfer device includes, outside the transfer conveyor, a spare conveyor that rapidly transports the cart from the coil loading position to the transfer position, a sub-conveyor that transfers the cart from the spare conveyor to the transfer conveyor, and a spare conveyor from the cart discharge section of the transfer conveyor. A conveyance control device in a coil conveying apparatus according to claim 1, comprising an empty truck return conveyor that conveys the conveyance to the conveyor's truck introduction section.