JPS5827169B2 - Product stocking method and equipment in integrated production line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention can be applied to an integrated can manufacturing line, for example, in which painted and printed surfaces on the inner and outer peripheral surfaces must be passed through an oven to bake and dry. In order to avoid stagnation of the group of can bodies passing through the oven due to the stoppage of the flow of can bodies to the downstream area due to various situations occurring in the downstream area, the can bodies are quickly evacuated and stocked outside the oven and the coated and printed surfaces are removed. While preventing the burning of products, the various situations that occurred downstream are resolved and the stocked can bodies can be sent downstream when operations are resumed.It is a method for stocking products in an integrated production line and its implementation directly. Regarding the equipment used.

Traditionally, when it is necessary to stock a large amount of products in the middle of an integrated production line, for example, due to a failure of downstream equipment or work circumstances, the upstream equipment must be stopped, or if it cannot be stopped, it must be done manually. Store it in a case or stack it up
Alternatively, it is customary to use a stocking device that takes up a large amount of flat space, and in either case, the operating rate decreases, or a large number of workers and a large flat installation space are required, creating problems in the production line configuration. The invention aims to solve the above-mentioned problems by temporarily storing and stocking a continuous spiral coil outside the midstream section of the production line without stopping the upstream equipment, and in addition, when the production line resumes operation, the midstream By returning the product to the storage section, wasted time in production is eliminated, productivity is increased, and a large number of products can be stocked without having to secure a stocking section that requires a large flat space.Furthermore, fully automatic mechanization has significantly reduced labor and manpower. The purpose of the present invention is to provide a method and device for stocking products in an integrated production line.

An embodiment of the apparatus of the present invention applied to an integrated can manufacturing line will be described with reference to FIGS. 1 and 2.

The stocking device A of the present invention includes a supply/discharge conveyor 1 which is a midstream device that is installed orthogonally at the terminal end of an upstream device such as an oven, and has a starting end of a downstream device opening connected to one end, and can be freely driven in forward and reverse directions. The starting end is connected to the other end of the discharge conveyor 1 via an intermediary conveyor 2, and a long stock conveyor belt 4 is wound endlessly in a continuous spiral coil shape along the periphery of an upright drum 30 installed in the stock section ST midway. A freely stretched spiral accumulator 5, a forward/reverse running switching mechanism 6 for switching the forward/reverse running of the stock conveyor belt 4, and a forward/reverse running switching mechanism 6 for switching the upright drum 3 between forward and reverse running in synchronization with the stock conveyor belt 4. It comprises a turning mechanism 7, and a drive transmission mechanism 9 that transmits the torque of a single drive motor 8 capable of forward and reverse driving to each of the forward/reverse traveling switching mechanism 6 and the forward/reverse turning mechanism 7.

As shown in FIGS. 2 to 4, the spiral accumulator 5 is connected to the outer periphery of the upright drum 3 from inside a frame 11 that concentrically surrounds the outer periphery of the upright drum 3, which is rotatably supported at the center of the lower end by a thrust bearing 10. The connecting ends of a group of arcuate resin parallel rails 13a held in a rail receiver 13 over a group of 12 receiving arms projecting in a cantilevered manner in a radial plane and a vertical spiral coil shape are overlapped and connected to each other. The lower end of the rail receiver 13 is fixed in a spiral coil shape with a stopper 14, and the sprocket 16 of the forward/reverse rotation mechanism I is externally engaged with the chain drum 15 which is wound and fixed to the lower edge of the outer periphery of the upright drum 3. .

The intermediate conveyor 2 is connected to the spiral accumulator 5 by the same drive shaft (not shown) so as to operate synchronously.

As shown in FIGS. 2 and 5, the stock conveyor belt 4 engages the front and rear adjacent meandering links 17 extending in the width direction with slight biting, and also extends through the engagement portions 17a and 17b. Mutually overlapping connecting slots 18
, 19 groups in the width direction with a pin rod 20, connecting the adjacent front and rear serpentine links 17 in series to form an endless strip, and straight rod links 21 regulating the alignment of both sides of the endless strip. A group of overlapping connecting elongated holes 22 are fixed through both ends of the pin rod 200 so that the pin rod 200 can run freely in a straight line, and are installed in the starting sprocket roll 23, the ending sprocket roll 24, and the intermediate sprocket roll 25, which are arranged near the end of the intermediate conveyor 2. When the frame is stretched endlessly so that it goes all the way, it is continuously placed on the parallel rail 13a of the upright drum 3 in a freely sliding manner, and is wound in a continuous spiral coil shape along the outer periphery of the upright drum 3, with the starting end acting as an intermediary. conveyor 2
By connecting the stock conveyor belt 4 in series with the stock conveyor belt 4 and running in endless forward and reverse directions, the three groups of can bodies are evacuated and stocked or returned to or from the intermediary conveyor 2.

As shown in FIGS. 6 and 7, the forward/reverse running switching mechanism 6 has groups of sprockets 26 and 27 that mesh with the stock conveyor belt 4 in the straight section between the end sprocket roll 24 and the intermediate sprocket roll 25 so as to freely transmit torque. A pair of sprocket shafts 28 coaxially fixed at equal intervals in the axial direction,
A miter bevel gear box having both ends of 29 penetratingly supported by bearings 30 and 31, and one-way electromagnetic clutches 32 and 33 in mutually opposite directions fixed to one end of the sprocket shaft 28 and 29, respectively, and that can be freely interlocked with the drive transmission mechanism 9. A chain 39 is stretched endlessly over the driving sprocket 36 fixed to the outer end of the output shaft 35 of 34 and the driven sprockets attached to the one-way electromagnetic clutches 32, 33) 37, 38, and the arrow X of the chain 39 When traveling in the forward direction, the one-way electromagnetic clutch 32 is engaged to integrally rotate the sprocket shaft 28, and the one-way electromagnetic clutch 33 is disconnected to idle the sprocket shaft 29, and when traveling in the reverse direction of the arrow y, The configuration is such that the one-way electromagnetic clutch 32 is disconnected, the sprocket shaft 28 is idled, and the one-way electromagnetic clutch 33 is linked to rotate the sprocket shaft 29 integrally, and on the other hand, as shown in FIG. 6, the sprocket 26 group of the sprocket shaft 28 and the groups of sprockets 27 of each corresponding sprocket shaft 29 are arranged with a deviation of a dimension l in the axial direction, which corresponds to the meandering pitch l of the meandering links 17 in the stock conveyor belt 4, as shown in FIG. There is also a sprocket 27 on the immediate side 20b of the bin rod 200 of the conveyor belt 4.
The tooth surface of the group contacts the immediate side 20a of the pin rod 200, respectively, and drives the straight portion of the stock conveyor belt 4.

As shown in FIG. 2, the forward/reverse rotation mechanism 7 has a sprocket 16 fixed to the outer end of the output shaft 41 of a worm reducer 40 that can be freely interlocked with the drive transmission mechanism 9, and is externally engaged with the chain drum 15 of the upright drum 3. The spiral bending portion of the stock conveyor belt 4 is driven once.

As shown in FIG. 2, the drive transmission mechanism 9 includes a timing pulley 43 fixed to the outer end of a motor shaft 42 of a single drive motor 8 capable of forward and reverse driving, and a worm reducer 40 connected to one end of the timing pulley 43.
A retiming belt 46 extends over a large timing pulley 45 fixed to the other end of a connecting shaft 44 directly connected to the input shaft of the retiming belt 46.
At the same time, the timing belt 51 is endlessly stretched across the timing pulley 47 fixed to the other end of the continuous joint shaft 44 and the timing belt 50 fixed to the input end of the upper reducer 490 of the shaft 48. An intermediate chain 55 is stretched endlessly over a sprocket 52 fixed to the output end of the gearbox 48, a sprocket 54 fixed to one end of the intermediate shaft 53, and a sprocket 56 fixed to the other end of the intermediate shaft 53, and a miter bevel gear box 5. A chain 60 is stretched endlessly across the sprocket 59 fixed to the small end of the input shaft 58, and the upper end of the connecting shaft 61 of the miter bevel gear box 57 is directly connected to the input end of the miter bevel gear box 340 to increase the drive torque of the drive motor 8. are branched and transmitted to the forward/reverse travel switching mechanism 6 and the forward/reverse rotation mechanism 7, respectively.

Note that 62 in the figure is a tension pulley that absorbs the elongation of the stock conveyor belt 4 since it is endless and extremely long.

The stocking method of the present invention applied to an integrated can making line will be explained with reference to FIGS. 1 and 2. First, can bodies α in an oven, which is an upstream device of an integrated can making line, are transferred to various ports of a downstream device. When distribution becomes impossible due to trouble, the supply of can bodies α to the integrated can manufacturing line is stopped, and the supply/discharge conveyor 1, intermediary conveyor 2, and stock conveyor belt 4, which are electrically connected to each other, are aligned in the direction of the arrow. Part 1
When it is driven, it is guided and regulated by a guide 63 (only a part of which is shown), and one or more rows of the group α of cans are continuously aligned with the same width to maintain an orderly shunting row, and the cans are continuously shuffled onto the stock conveyor belt 4 of the stock section ST. For example, 10,000 cans are stored and stocked in a coiled manner on multiple floors at a rate of 800 cans/min.

That is, the normal rotation of the first drive motor 8 is transmitted to the joint shaft 44 by the timing belt 46, and the rotation of the joint shaft 44 is transmitted to the shaft 48 of the on-axis reduction gear 49 by the timing belt 51, and further to the intermediate shaft 53 by the chain 55. , then the chain 60 connects the connecting shaft 61 via the miter bevel gear box 57.
and finally to the miter bevel gear box 3.
4 drives the sprocket 36.

The sprockets 37 and 38 attached to the one-way electromagnetic clutches 32 and 33 are driven by the chain 39 hooked on the sprocket 36, but when the vehicle is traveling forward in the direction of arrow X, the one-way electromagnetic clutch 33 idles. A one-way electromagnetic clutch 32 rotates the sprocket shaft 28.

Parallel to this, as the sprocket 16 fixed to the output shaft 41 end of the sprocket 16 through the worm reducer 40 rotates forward, the thrust bearing 10 is integrally rotated by 1L% as the chain drum engages with the sprocket 150. Since the upright drum 3 rotates normally in the direction of the arrow, the stock conveyor belt 4 runs endlessly at a constant speed.

In this way, in the event that a problem occurs at the downstream device opening of the integrated can manufacturing line, the can bodies α group that came out of the oven can be quickly reverse-driven through the supply/discharge conveyor 1 and transferred via the intermediary conveyor 2 to the stock section. Spiral accumulator 5 in ST
The stock is evacuated onto the stock conveyor belt 4 and the stock is on standby.

When the downstream device opening of the integrated can manufacturing line is repaired and adjusted and operation is resumed, the drive transmission mechanism 9 rotates in the reverse direction by driving the supply/discharge conveyor 1 forward in the direction of arrow U and at the same time by reversing the drive motor 8. The forward/reverse travel switching mechanism 6 and the forward/reverse rotation mechanism I are driven in the reverse direction via the forward/reverse drive switching mechanism 6 and the forward/reverse rotation mechanism I.

That is, as the chain 39 of the forward/reverse running switching mechanism 6 runs backward in the direction of the arrow y, the one-way electromagnetic clutch 32 idles, and the one-way electromagnetic clutch 33 rotates the sprocket shaft 29.

In parallel with this, as the sprocket 16 of the forward/reverse rotation mechanism 7 rotates in reverse, the upright drum 3 rotates integrally around the thrust bearing 10 as the chain drum 150 rotates in mesh with it.
Since the stock conveyor belt 4 rotates in the opposite direction, the entire stock conveyor belt 4 runs endlessly in the reverse direction in the direction of the arrow U at a constant speed.

In this way, the group of can bodies α waiting on the stock conveyor belt 4 of the spiral accumulator 5 is orderly delivered to the supply/discharge conveyor 1 via the intermediary conveyor 2 without breaking the formation of the shelter line, and the can bodies α If the group comes out of the oven at a high speed of, for example, 900 cans/min, to the downstream device opening, or if the group comes out of the oven continuously without a pause at the time of resumption of operation, for example, 100 cans/min. can/
After the integrated can making line resumes operation, the operation rate is increased by ensuring that the flow of the can bodies α to the downstream device opening is not interrupted.

Note that the intermediary conveyor 2 can be omitted, and the layout of the supply/discharge conveyor 1 and the spiral accumulator 5 is not limited to the embodiment of the present invention, and can of course be applied to products other than can bodies.

Since the present invention is constructed as described above, the long stock conveyor belt 4 capable of running in a straight line is wound continuously in a spiral around the upright drum 30 and runs endlessly. If a large number of products are absorbed and stocked in the stock section ST and run in reverse, they will run backwards into the production line again, and even if the downstream functions of the production line stop due to various reasons, the products from the upstream equipment will be stopped. The installation area is small and the stock capacity is large so that production can continue without interruption.

In addition, it is possible to easily adjust the timing pulleys 47 and 50 so that the rotation speed of the upright drum 3 is slightly faster than the running speed of the stock conveyor belt 40, thereby optimizing the belt tension of the stock conveyor belt 4.
This can be done without causing any hindrance to the operation, and since the resin parallel rails 13a are provided with overlapping joints at equal intervals, it is possible to cope with elongation due to forward and reverse running of the stock conveyor belt 4.

Furthermore, the drive system of the stock conveyor belt 4 of the present invention consists of a drum drive and a linear drive, and the drum drive serves to pull the stock conveyor belt 4 wound around the upright drum 3, and the drive system of the stock conveyor belt 4 of the present invention is composed of a drum drive and a linear drive. The tension of the conveyor belt 4 is kept constant regardless of the length of the belt, and the linear drive pulls the belt in the straight section and gives a constant tension to the stock conveyor belt 4 wrapped around the upright drum 3, and also runs in forward and reverse directions. It is free.

Thus, the present invention is compact because it can store products upright in a continuous spiral coil shape, and can stock a large amount of products.Also, since it does not require human labor, it can be temporarily stocked in the assembly line of an integrated production line. It has excellent effects.

[Brief explanation of the drawing]

Fig. 1 is an example of the layout of the device of the present invention installed in an integrated production line, Fig. 2 is a partially omitted side view of the same, and Fig. 3 is a plan view schematically showing the means for supporting the stock conveyor belt in the upright drum. Figure 4 is a sectional view taken along line rV-IV in Figure 3, Figure 5 is a partially enlarged structural view of the stock conveyor belt, Figure 6 is a suggested plan view of the forward/reverse traveling mechanism, and Figure 7 is a front view of the same. It is. A...Stock device, t, u, x, y...arrow, A...oven, mouth...downstream device, 1...supply/discharge conveyor, 2...intermediate conveyor, 3...・Upright drum,
4...Stock conveyor belt, 5...Spiral accumulator, 6...Forward/reverse travel switching mechanism, 7...
・Forward and reverse rotation mechanism, 8... Drive motor 11... Frame, 12... Receiving arm, 13... Rail receiver, 13
a... Resin parallel rail, 15... Chain drum, 16. 26. 27... Sprocket, 17...
・Meandering link, 17a, 17b...meshing part, 18
, 19, 22... connecting long hole, 20... pin rod,
28, 29... Sprocket shaft, 32.33... One-way electromagnetic clutch, 36... Drive sprocket, 37
, 38... Driven sprocket, 39... Chain.

Claims (1)

[Scope of Claims] 1. If a problem occurs in the downstream part of an integrated production line and the distribution of products in the downstream part is stopped, the product supply of the integrated production line is stopped, and the product group that has already passed through the upstream part is temporarily transferred to the midstream part. When the products are evacuated to the stock section connected to outside the integrated production line, the products from the upstream section are transferred back to the stock section at the midstream section, and the products that have been transferred to the stock section in a standing position are One or more sheltering rows of the same width are arranged in a continuous manner and accommodated in multiple floors in a continuous spiral coil without any stagnation in the middle, and when the repair of the downstream part is completed, the product supply of the integrated production line is resumed. At the start of the process, the group of products to be accommodated and evacuated in the form of a continuous spiral coil is sent back to the midstream section of the integrated production line without breaking the formation of the evacuated line, and then delivered from the stock section to the integrated production line. A method of stocking products on an integrated production line that ensures uninterrupted distribution of products after restarting operations. 2. A supply/discharge conveyor that is installed in the midstream part of an integrated production line and can be driven in forward and reverse directions to supply and discharge products supplied from the upstream part, and a supply/discharge conveyor that is connected to one end of the supply/discharge conveyor and connected to the area around the upright drum midway through the supply/discharge conveyor. A stock conveyor belt that can run in a straight line is wound around the belt in a continuous spiral coil shape and is stretched so that it can run endlessly, and the supply and discharge conveyor is reversely driven in the event of a failure of the downstream device connected to the other end of the supply and discharge conveyor. a spiral accumulator that continuously arranges and inherits the group of products that have been reversely transferred in one or more rows with the same width on the forward running stock conveyor belt 1 and retracts the stock in a continuous spiral coil; and the stock conveyor belt a forward/reverse travel switching mechanism for switching between forward and reverse travel; a forward/reverse rotation mechanism for rotating the upright drum in the forward and reverse directions in synchronization with the stock conveyor belt; and a forward/reverse travel switching mechanism and a forward/reverse rotation mechanism, respectively. Product stocking device 03 in an integrated production line, which is equipped with a drive transmission mechanism that transmits the torque of a single drive motor that can be driven in forward and reverse directions.A spiral accumulator is a product stocking device for an integrated production line that is equipped with a drive transmission mechanism that transmits the torque of a single drive motor that can be driven in forward and reverse directions. (L% Parallel rails are laid in a continuous spiral coil shape over a group of receiving arms that cantilever out in a plane radial manner and in an vertical spiral coil shape from the inside of the frame that surrounds it in a circle to the outer peripheral surface of the upright drum. A product stocking device for an integrated production line according to claim 2, comprising a chain drum wound around and fixed to the outer periphery of the lower edge of the upright drum and a sprocket of a forward/reverse rotating mechanism externally engaged with the chain drum. A product in an integrated production line according to claim 3, which is made of resin and has an arcuate shape, and the connecting ends are overlapped and connected to each other, and the product is suspended in a continuous spiral coil shape by a rail holder and laid on a rack. 5. The stock conveyor belt has meandering links extending in the width direction that are slightly meshed with each other at the front and back, and a pin rod is used to pass through the meshing portions through a group of connecting long holes that overlap each other in the width direction. Product stocking device in an integrated production line according to claim 2, 3 or 4, wherein the meandering links in front and behind the adjacent ones are formed in an endless band shape. The reverse running switching mechanism has a pair of sprocket shafts coaxially fixed at equal intervals in the axial direction, and a group of sprockets meshing with each other to freely transmit torque to the stock conveyor belt.One-way clutches running in opposite directions are fixed to each end of a pair of sprocket shafts, and the drive transmission mechanism is A chain is stretched endlessly over the sprocket that can be freely interlocked with the sprocket and the sprocket attached to each of the one-way clutches, and one one-way clutch is engaged while the other one-way clutch is engaged for forward running of the chain. Claims 2, 3, 4, or 5 are configured to disconnect one one-way clutch and engage the other one-way clutch when traveling in reverse. Product stocking equipment for integrated production lines.