JPS6216912A - Coil conveyor - Google Patents

Abstract

PURPOSE:To aim at improvements in durability and stop positional accuracy, by setting conveyors for sparing, conveying and returning down to a chain conveyor, while installing a dock, engaging or disengaging to or from a truck axle interlocking with chain running, in respective link plates and constituting it so as to pull a truck. CONSTITUTION:When a chain conveyor 21 for sparing, conveying and returning use is advances in an A direction, a truck axle 60' tilts a lever 41 around a pin 37 and gets over this lever 41, thus it enters an interval 60 between a back surface 29 of a dock 27 and an engaged part 40 of the lever 41, whereby this lever 41 is restored to its original position by dint of spring force, and the axle 60 is engaged. With this engagement, a truck is pulled. Since a notch is being installed on a rail 17 at a truck stop position, a roll 35 of a leg 31 of the dock 27 is sunk down as in a one-dot chain line so that engagement of the axle 60 is set free. And, a spare conveyor engages and pulls the axle 60 with a dock 56 rotating downward with its own weight. This dock 56 is pushed upward by a stopper 59 whereby its engagement is released. Thus, durability and positional accuracy are improved.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention utilizes a chain to convey a coil,
This invention relates to a coil conveying device that improves the accuracy of the stopping position of a conveyor that operates in tact and also extends the service life of the conveyor.

(Prior art) Conventionally, when conveying a coil in a down position,
- As typified by Publication No. 13747, a pair of fixtures for placing and transporting coils are provided every few pitches of the chain to form a trolley, the chain and the trolley are integrally connected, and the chain has two threads. It is organized by. This chain transports heavy coils, so when the transported item is transferred to another conveyor or taken out, it is stopped at the specified position by tact operation. . The chain connection part consists of a bearing part made up of pins and bushings, so wear at the bearing part appears as elongation of the chain, causing a pitch error, making it difficult to stop at an accurate position during tact operation. It becomes. In order to adjust the stopping position of this trolley, the chain must be rotated forward and backward together with a trolley that is integrated with the chain and a large number of coils on the trolley to adjust the position, but this takes time during the transportation process. This results in not only physical loss but also energy loss in the driving source. Furthermore, with the recent automation of conveyor transport, the accuracy of stopping positions is important, and maintaining takt time is also an important element for automation. This problem can be solved as long as the chain and trolley are integrally constructed.
This is something that cannot be resolved.

(Problems to be Solved by the Invention) As mentioned above, it is difficult to maintain the positional accuracy of the cart when the chain and the cart are integrally configured, and position adjustment caused by stop position errors reduces tact due to automation. It becomes difficult to maintain and cannot be fully automated. Also, wear on the pins and bushings of the chain cannot be completely avoided. Therefore, an object of the present invention is to provide a conveyor that can maintain the accuracy of the stop position of the cart, that is, the coil, and maintain the conveyance tact regardless of the wear of the pins and bushes.

(Means for solving the problem) A sub-conveyor is provided between the preliminary transport conveyor and the transport conveyor, an empty cart return conveyor is provided below these three conveyors, and the cart is controlled to engage and disengage from the chain. This is done by raising or lowering a dock provided on the chain.On the preliminary transport conveyor, coils are sequentially loaded onto empty carts, and on the sub-conveyor, coils are loaded and transported one by one, and then to the final cart on the transport conveyor. When the coil is "absent", the sub-conveyor is started to send the cart onto the transfer conveyor, and after unloading the coil on the most advanced cart, the chain of the transfer conveyor is started and the cart is transferred to the cart that has been unloaded. The chain is engaged and sends the most advanced empty car to the empty car return conveyor side. If there is a trolley at the leading edge and the coil is loaded, the leading truck can be left in that position and the following truck can be sent following the leading truck by driving the conveyor chain.

That is, the stopping position of the cart on which the coil is placed is adjusted, and while the stopping position of the cart is being adjusted, the following several carts are sent one stage at a time or several stages. , and the sub-conveyor and transfer conveyor are connected to the carriages on each conveyor by their respective chains, and the empty carriage return conveyor transports the empty carriage from the end of the transfer conveyor to the preliminary transfer conveyor side.
Index.

(Function) The chain in each conveyor is provided with a dock at every few pitches of the chain, and in the preliminary conveyor, sub-conveyor, and conveyor, the rails can be partially raised and lowered at each stage, and the dock is installed at every few pitches of the chain. The roller supported at the lower end releases the engagement between the dock and the axle due to the descent of the guide rail, and also raises the lifting rail to the same height as the rail, bringing the dock into a normal state and engaging the axle, thereby lifting the bogie. As a general rule, the dock moves at the same speed as the chain, and at the lowering point of the elevator rail, the dock sinks and disengages from the axle, and stops the wheel at a fixed position at each stage to align the center at each stage. Similarly, on the transfer conveyor, when the coil is unloaded from the leading cart, the cart is engaged and transferred to the empty cart return conveyor side, or several carts are moved from each stage one stage at a time. The carts are sequentially moved from the sub-conveyor onto the transport conveyor, and the empty car return conveyor takes over the empty car from the transport conveyor faster than the speed of the preliminary transport conveyor, the sub-conveyor, and the transport conveyor, and moves the carts from the sub-conveyor to the starting point of the preliminary transport conveyor. In order to effectively use the trolley that conveys the coil while minimizing the number of empty trolleys, the coil is sent onto the conveyor line and the energy loss on the conveyor is minimized.
It ensures accurate stop positions of carts in conveyor transport associated with automation, enables coils to be placed on many carts and transferred simultaneously or individually, reduces the load on the chain to prevent wear, and Even if a pitch error occurs due to the wear, the stop position of the truck can be made accurate.

(Embodiment) FIG. 1 shows an overall outline of the conveyor line of the present invention, and FIGS. 2 and 3 show the route from the preliminary conveyor to the sub-conveyor and from the sub-conveyor to the conveyor,
FIG. 4 is a drawing for comprehensively explaining the conveyor;
Figure 5 shows an example of the chain used for the preliminary transport conveyor, sub-conveyor and transport conveyor, Figure 6 shows an example of the chain used for the empty car return conveyor, and Figure 7 shows an example of the chain used for the empty car return conveyor.
Although FIG. 8 shows a specific embodiment of the entire line, the operation of each conveyor will be explained below based on the drawings, following the structure of the chain.

First, to describe the chain A used for the preliminary transport conveyor U, sub-conveyor W, and transport conveyor Fit the outer link plates 22, 22 to the pins 24, 24 that pass through the bush.
Attach the bearing (
The rollers 25, into which rollers (not shown) are inserted, are freely removable and form a continuous length chain A. The dock 27 is connected to the pin 26 on the outside of the pin 26 that passes through and fixes the inner link plates 21, 21 every few pitches of this chain A.
Mounted so that it can rotate around the center. That is, the frame 28, the back surface 29, the jaw 30, and the legs 31 form an abbreviated shape, with a protrusion 6t32 at one end, the back surface 29 is curved with a constant radius of curvature, and the jaw 30 has a stop pin 33. The pin 33 is fixed to the inner link brakes 21, 21, and the leg 31 passes through the lower part of the pin 34. A main roller 35 is attached to the center of the pin 34, which is fixed to the inner link brake (21, 21). Subrollers 36, 36 are attached to the ends of the pin 34 protruding on both sides of the
A main roller 35 and a sub-roller 36 are rotatably fixed, a pin 37 is fixed to the lug 32, 32, and a stop plate 3 is provided in front of the lug 32, 32 on the side in the direction of movement of the chain A.
8 is fixed by welding, and a lever 41 consisting of a tail portion 39 and a locking portion 40 centered around a pin 37 is constantly biased upward by a coil spring (not shown) to assume an inclined position, and the axle 60 is The back surface 29 and the locking portion 40 are arranged in the travel route, and the main roller 35 or the sub roller 36 is normally transferred on the rail 71 to maintain the dock 27 in a normal posture.
At the part where the rail 71 descends, center around the pin 26! The main roller 35, the sub-rollers 36, 36, and the dock 27 sink according to the quantity ratio, and the lever 41 attached to the pin 37 also sinks and descends lower than the axle 60. And the main roller 3 is placed on the rail 71.
5 or the auxiliary rollers 36, 36, the dock 27 and the lever 41 maintain the normal position and move the axle 60'.
When the lever 41 comes into contact with the lever 41 and tilts the lever 41 around the pin 37, and the axle 60 reaches the position, the spring-biased lever 41 returns and the axle 60 is moved between the locking part 40 and the back surface 29. When the bogie is about to move forward due to the progression of the chain A, the axle 60 is held by the engaging portion 40, and the lever 41 is maintained in a lever-like manner by the spring bias and the stop plate 38. In addition, although details are not shown in each figure, in order to maintain the width of the inner link plates 21, 21, pins 26
．． Inner link brake of section 33) A tubular spare is placed inside the inner link plates 21 and 21, and in order to maintain its size and strength on the outer side of the inner link plates 21, 21 of the docks 27, 27, the dock of the fastener 42 is inserted. A spacing tube 43 is inserted into the rollers 27 and 27 and between the main roller 35 and the auxiliary rollers 36 and 36 to maintain a distance therebetween. (Fig. 9) These chains A are one thread on the preliminary transport conveyor U and the transport conveyor Chain A of sub-conveyor W
with two strips to create a preliminary conveyor U and a conveyor X.
The rails of chain A are made to be different.

The preliminary transport conveyor U, the sub-conveyor W, and the transport conveyor X each transport a bogie on the top surface of the conveyor, whereas the empty bogie return conveyor Y transports the bogie on the bottom surface of the conveyor Y, hereinafter referred to as empty bogie. Regarding the chain B used for the return conveyor (Fig. 6), the inner link plates 46, 46 are connected to bushes or rollers 48,
48 forms an inner link, outer link plates 47, 47 are fitted on both outer sides of the inner link plates 46, 46 to a pin 49 that passes through the bush 48, and bearings, etc. are fitted to the pins 49 that protrude to both outer sides. The rollers 50 with flanges that are inserted and freely rotated are fixed. Then, approximately trapezoidal protrusions 51 are provided on the sides at every number and length of the chain B so that the protrusions 51 are directed downward in the direction of propagation of chain B so that the protrusions 51 are on the front side in the direction of propagation of chain B (arrow). and the outer link plates 47, 47 in front of the other protrusion 51.
A stop plate 52 is welded and fixed to the lock, and a substantially knife-shaped dock 56 is attached, which is made up of a locking part 54 and an engaging part 55 with widely different length ratios around a pin 53, and the pin 53 is a bearing. The portion 57 allows free rotation, while the stop plate 52 and the locking portion 54 limit the angle of inclination of the dock 56, so that the engaging portion 55 is always within the travel path of the axle 60 of the truck when the chain B is running. It holds like that.

Therefore, in the engaging part 55, the depth of cut is shallow on the side of the jaw 58, and the depth of cut is deep on the opposite rear side, opposite to the traveling direction of the chain B, to form the dock 56, which is proportional to the length ratio. Since the weight ratio is also large, the dock 56 is necessarily inclined downward on the engaging portion 55 side. As the chain B advances, the dock 56 approaches the axle 60, and when it comes into contact with the jaw 58, the dock 56 is slid upward,
The axle 60 and the engaging portion 55 naturally engage, and when there is a stopper 61 provided on the truck or a stopper 59 that is movable pneumatically or hydraulically within the same travel route as the axle 60, the above-mentioned In the same way as when the dock 56 approaches the axle 60, the jaws 58 come into contact with the stoppers 59 and 61, and the dock slides upward, immediately disengaging the axle 60 from the engaging portion 55 and removing the carriage. release.

Next, to explain about the trolley, the underframe 44.44 frame 45.45.45.45 is integrally assembled with a beam 62 using steel plates, molded steel, etc., and chain A or chain B is used.
The forward axle 60 is a single shaft, and the front axle 60 is a single shaft. The axle 6 passes through the frame 44◆44 and protrudes from it.
Transfer rollers 63 and 6 are rotatable with bearings etc.
3 is fixed, and rear axles 64, 64 are fixed to the underframe 44, but unlike the axle 60, they do not penetrate between the underframes 44.

The reason why it does not penetrate is that the dock 27 or dock 57 is passed through and engaged only with the axle 60, and horizontal rollers 65, 65, 65, 65 are provided on the underside of the underframe 44, and the transfer roller 63 is the rail 72 of conveyors U, W, and X, and the horizontal roller 65 is the inside of the rail 72,
In addition, in the empty bogie return conveyor Y, a transfer roller 63 is guided by the inner surface of the U-shaped steel rail 73, and a lateral roller 65 is transferred by the side surface to ensure the trajectory of the bogie. Further, a shock absorber 66 is provided at the front of the underframe 44, and a stopper 61 is provided at the rear. When the following bogie collides with the preceding bogie, the shock absorber 66 provides a buffer. As explained above, it plays an important role in disengaging the axle 60 and the engaging portion 55. and,.

In chain A, rollers 25.25 are transferred using rails 74.74 as guides, and on the return side of chain A, running is ensured using rails 75.75 as guides, and the chain A similarly runs on rail 71. Dock main roller 35
Alternatively, the back surface 29 of the dock 27 and the locking portion of the lever 41 are held in the travel path of the axle 60 by the auxiliary roller 36 . Also, as will be described later, at the position where the bogie is to be stopped, the rail 71 is lowered and the dock 2
7 is lowered.

Furthermore, in the chain B, the rails 76, 76 support the flanged rollers 50, 50, and the track is formed so that the engaging portion 55 of the dock 56 is within the travel path of the axle. This also prevents chain B from meandering caused by errors caused by wear of pins 49 and bushes in chain B.

Furthermore, to explain the movement of each conveyor based on Figures 1 to 4, the preliminary conveyor U has sprockets S1 and S2, the sub-conveyor W has sprockets S3 and S4, and the conveyor X has sprockets. Chains A are hung on S5 and S6, respectively, and their conveying surfaces are the same. In the preliminary transport conveyor U, the trolley is at position 11, the rail 71 is lowered, the dock 27 is lowered and stands by, and the coils are loaded thereon. If the dock 27 rises here, the dock 27 will be attached to the axle of the trolley.
The rear surface 29 is engaged, the trolley is transferred as the chain runs, the trolley is confirmed to pass at position 12, and if there is a seat at position 14, it stops at position 13.0 When there is no trolley at position 14. passes through position 13, stops at the next position 14, and is positioned. Furthermore, if there is no truck at position 1, the sub-conveyor W is activated, stops at position 1, and is positioned. (Fig. 2) Therefore, as shown in Fig. 3, trolleys loaded with coils are placed on the conveyor X at each position (1 to 10)
If the coil at position 10 is unloaded,
As the lifting rail 71 at the position 8.9.10 rises, the dock 27 engages with the axle 60 of the trolley and transfers one stage at a time, changing from 8 to 9.9 to 10. The cart at position 10 becomes an empty cart and is reversed to the return side. If the 8th position becomes empty, 5→6.6→7.

The dock 56 engages with the axle 60 of the truck and transports the truck returned from the transport conveyor X to the empty truck return conveyor Y side. And the transported trolley is stopped by 59
Or it collides with the preceding bogie and is stored. In other words, the stopper 61 attached to the truck prevents the dock 56 from engaging with the axle 60, and the trucks D , D , . . . stop continuously.

In this manner, the coil conveyance device according to the present invention includes a preliminary conveyor U and a conveyor X arranged in series, a subconveyor W arranged in parallel between both conveyors U and An empty car return conveyor is installed on the lower side of X and W, and the dock 27.56 attached to the conveyor chain engages and disengages the axle 60 of the car carrying the coil, thereby transporting the coils. The descent described below can be achieved with a coil transport device that can repeatedly stop and provide the required amount of coil at the required time.

(Effects) (1) The coil conveyance device uses a conveyor chain to pull a bogie that runs on rails.The conveyor chain and the bogie that loads the coils are separated, and the stretch of the chain causes the bogie to move. The stopping position of the coil is not affected, and coils can always be loaded and unloaded at the correct position.

(2) With this device, if there is a vacant seat in front of you, you can immediately move to the dock 27.
It is equipped with a front-loading function that automatically moves the trolley to ensure that there are no vacant seats at each position in front, and has extremely high transport efficiency. Therefore, the number of carts on which coils are loaded can be kept to the minimum necessary.

[Brief explanation of the drawing]

Figures 1 to 4 show how the cart of the coil conveying device according to the present invention is transported, and Figure 5 shows the dock attached to the conveyor chain on the transfer side, and Figure 6 shows the conveyor chain on the return side. Figure 7 shows a part of the front view of this device, and Figure 8 shows a cross-sectional view of the dock attached to the device.
FIG. 9 shows detailed mounting views of the dock main roller and sub roller, respectively. U, Preliminary transport conveyor Dock 71, , , , Frame 61 , , , Stopper

Claims (1)

[Claims] A transport conveyor is installed in series with the preliminary transport conveyor, a sub-conveyor is installed in parallel to serve as a connection between these two conveyors, and an empty car return conveyor is installed in parallel below the above-mentioned preliminary transport conveyor, transport conveyor, and sub-conveyor. This is a coil conveying device in which a trolley loaded with coils performs tact operation by engaging and disengaging with a dock attached to a continuously running conveyor chain. The dock 27 that indexes the truck D is rotatably supported by a link plate of a conveyor chain via a pin 26, and is comprised of a frame 28, a back surface 29 that engages with the axle 60, a jaw 30, and legs 31, which are approximately L. It is shaped like a letter and has a protruding edge 32 at one end. At the tip of the leg 31, a main roller 35 and a sub roller 36 that roll and run on a rail 71 installed parallel to the conveyor chain at a certain distance are installed. In addition, a lever 41 that rotates around a pin 37 and prevents the trolley D from running alone is attached to the projecting edge 32 in an inclined state and always biased upward by a spring force. On the other hand, in the empty car return conveyor, a dock 56 having an engaging portion 55 that engages with an axle 60 is rotatably attached to a link plate around a pin 53.
The dock 56 rotates and sinks due to its own weight in a notch formed in the rail 71 and disengages from the axle 60 of the bogie D, and the dock 56 engages with the axle 60 due to its own weight and attaches to the stopper 59 or the rear of the preceding bogie D. A coil conveying device characterized in that it is released from an axle 60 at the same time as it comes into contact with a stopper 61.