JPS6246255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that a can body blank, which has been coated on the front side and printed on the back side and cut to a predetermined standard size using a tandem slitter, is immediately sent to a body making machine that performs the next step of forming the can body. The present invention relates to an automatic supply method for stacking can body blanks and a supply line.

In the past, the continuous work of cutting the can body blanks and feeding them into the body making machine was carried out by hand, which resulted in a reduction in work efficiency and the availability of personnel. This work process required an immediate solution in order to cope with mass production to meet the increasing demand for containers such as cans.

As a response to this request, the special public service 55-17659
As described in the publication, there is a system that connects a tandem slitter and a body making machine through a special device to achieve fully automatic mechanization. The height of the tandem slitter from the floor can be designed to be low in order to match the processing speed and to facilitate maintenance and adjustment such as replacing consumable parts such as the roll cutter of the tandem slitter. On the other hand, the can body blank accumulating stacker of the body making machine is mechanically installed vertically on top of the body making machine, with the can body blank inlet opening at its upper end. The can body blanks must be lifted to a height that allows them to be carried into the accumulating stacker, and as a means to solve these problems, a stacker is used in which a predetermined number of can body blanks are accumulated in each of multiple gates arranged in parallel at the can body blank discharge end of the tandem slitter. A group of stacked cylinder blank layers in close contact with each other corresponding to the number of gates is transferred to a conveyor device with a number of heavy cylinder blank layers in close contact with each other, and while being conveyed by the conveyor device, the distance between the front and back in the conveyance direction is increased. The stacked blanks are finally raised by an elevator mechanism to a height suitable for supplying them to the stacker for accumulating can body blanks on the body making machine, and the elevator conveyor is used to supply each layer of stacked blanks to the stacker for accumulating can body blanks. The height of each machine from the floor of each device before being transferred to the equipment is designed to be low to make it easier to perform replacement, maintenance, inspection, and adjustment as an installation addition. The stacked cylinder blank layer is transferred in such a way that the stacked cylinder blank layer is transferred in a timely manner to the hooking piece of the elevator conveyor device that receives the stacked cylinder blank layer during transportation by the conveyor device. The conveyor system and the elevator conveyor are arranged so that the front and rear blank layers are at a predetermined equal interval, and the blank layer is conveyed to the elevator conveyor system while being positioned in the best position for transfer to the hooking piece of the elevator conveyor system. The devices are configured to operate in the same manner. That is, the multiple loading of stacked cylinder blank layers from the conveyor device to the elevator conveyor device is carried out only by synchronizing the conveyor device and the elevator conveyor device, and then loading the group of stacked cylinder blank layers conveyed on the conveyor device. This is possible only by strictly maintaining the distance between the front and back and its position, so any slight timing discrepancy during the work can be fatal, causing it to deviate from the correct position and become unstable on the hook of the elevator conveyor system. A situation in which an item is placed in an unbalanced state and falls off the hook of the elevator conveyor while being lifted by the elevator conveyor and gets caught in the equipment, causing a problem in operation and requiring the operation to be restarted. This has led to problems such as a decrease in the transfer rate and a decrease in the efficiency of the can manufacturing line.

In addition, when connecting the tandem slitter and the body-making machine, the blanks conveyed from the tandem slitter in a close alignment are rotated into contact with a turntable installed in the middle of the conveyor to change direction and are separated for a predetermined period of time. Since the tandem slitter and the body-making machine are then sent onto another conveyor following the body-making machine, the positioning of the tandem slitter and the body-making machine is restricted, and it is difficult to freely change the positions to suit the shape and convenience of the installation space. Ta.

In view of the above-mentioned conventional problems, the present invention provides a method for automatically supplying can body blanks that can efficiently and reliably supply can body blanks, increasing reliability and improving operation rate, and an automatic can body blank supply method that can be used directly to carry out the method. It is intended to provide a line.

An embodiment of the method of the present invention will be described with reference to FIGS. 1 to 9.

In the automatic can body blank supply method of the present invention, a predetermined number of can body blanks cut into specified dimensions by the tandem slitter 1 are stacked in a plurality of gates (not shown) arranged in parallel at the discharge end of the tandem slitter 1. A first stage step in which two groups of stacked cylinder blank layers are transferred to a first conveyor device 3 with the adjacent stacked cylinder blank layers 2 in close contact with each other and conveyed to the next process, and the first conveyor device 3 By intermittently transferring between the stacked cylinder blank layers 2 of the 2 groups of stacked cylinder blank layers 2 which are conveyed in a close state in the front and back in the conveyance direction from the first conveyor device 3 to the next second conveyor device 4. A second stage process of transferring two groups of stacked cylinder blank layers onto the second conveyor device 4 so that the front and back are separated from each other, and the second group of stacked cylinder blank layers are transported by the second conveyor device 4 with the two groups separated from each other. Stacked shell blank layer 2
When the stacking cylinder blank layer 2 is transferred to the elevator conveyor device 5 at the optimum position for transfer to the elevator conveyor device 5, it is immediately placed on the second conveyor device 4 from the state of contact. A third stage process in which the heavy body blank layer 2 is slightly raised to cut off contact with the second conveyor device 4, and the stacked copper blank layer 2, which is waiting and isolated from the second conveyor device 4, is placed on the body making machine 6. A fourth stage process in which the can body blanks are raised to a predetermined height sufficient to supply them to the can body blank accumulating stacker 8 which is set upright with the can body blank inlet 7 opened at the upper end, and the can body blanks are raised to a predetermined height. The fifth step of supplying the stacked barrel blank layer 2 to the stacker 8 for stacking can barrel blanks is successively carried out.

An embodiment of an automatic can body blank supply line directly used in carrying out the method of the present invention will be described with reference to FIGS. 1 to 9.

The automatic can body blank supply line A of the present invention includes a support plate 10 on which can body blanks cut into specified dimensions by the tandem slitter 1 are temporarily received and placed until they are transferred to the lifter plate 9;
A first conveyor device transfers two groups of stacked blank layers consisting of a predetermined number of can body blanks stacked on a support plate 10 into each gate (not shown) arranged in parallel at the can body blank discharge end of the tandem slitter 1. 3, a transfer device 12 consisting of a lifter mechanism 11, a first conveyor device 3, and a group of two stacked cylinder blank layers conveyed in close contact with each other in the front and rear by the first conveyor device 3. The stacked cylinder blank layers 2 addressed one by one are transferred onto the starting end 14 of the second conveyor device 4 in the order in which they arrive at the terminal end 13, and then transferred to the second conveyor device 4.
An intermittent transfer device 15 that allows the stacked cylinder blank layers 2 to be conveyed on the second conveyor device 4 with the front and back being spaced apart from each other in conjunction with the intermittent movement, and the intermittent transfer device 15 A second conveyor conveys the stacked cylinder blank layer 2 transferred onto the starting end 14 to the transfer position 16 of the elevator conveyor device 5 with the front and back being spaced apart from each other.
When transferring the stacked cylinder blank layer 2, which has been transported to the transfer position 16 with the front and back spaced apart from each other on the conveyor device 4 and the second conveyor device 4, to the elevator conveyor device 5, Immediately after the stacked cylinder blank layer 2 sent to the transfer position 16 is conveyed by the second conveyor device 4, the stacked cylinder blank layer 2 is slightly raised. A transfer positioning device 17 that cuts off contact with the conveyor device 4 and is always ready to be received by the elevator conveyor device 5 at a predetermined position, and a stack that is waiting at a predetermined position due to the function of the transfer and positioning device 17 An elevator conveyor device 5 that moves up to a predetermined height sufficient to sequentially and intermittently supply the can body blank layer 2 to the can body blank accumulating stacker 8 of the can body making machine 6.
Then, a blank pusher device 1 sequentially and intermittently supplies the stacked barrel blank layers 2 that have been raised to a predetermined height to the can barrel blank accumulating stacker 8 of the barrel making machine 6.
8, a group of gates (not shown) arranged in parallel at the discharge end of the tandem slitter 1.
A delivery device 12 is installed below, and a first conveyor device 3 is installed in parallel with the first conveyor device 3 of the delivery device 12.
A second conveyor device 4 is arranged in parallel with the starting end 14 positioned at the terminal end 13 of the first conveyor device 3 and the conveyance direction is opposite to the first conveyor device 3 as shown by the arrow in the figure. An intermittent transfer device 15 is interposed between the start end 14 and the elevator conveyor device 5 is installed straddling the terminal end 19 of the second conveyor device 4, and the can body of the body making machine 6 is installed from the upper area of the elevator conveyor device 5. A blank pusher device 18 is installed over the area above the blank stacker 8.

The support plate 10 as shown in FIG.
enters and exits the bottomless opening lower end area of a plurality of gate groups (not shown) arranged in parallel at the discharge end of the tandem slitter 1 that accumulates and stores can body blanks cut into specified dimensions by the tandem slitter 1. The lifter plate 9 of the transfer device 12, which is configured to be movable and can be moved up and down, moves upward and stacks the can body blanks, that is, the stacked body blank layer 2, which is stacked in a predetermined number in each gate. The heavy body blank layer 2 is received, and before the lifter plate 9 descends, an exit movement is made from the bottomless open lower end area (between the stacked body blank layer 2 and the lifter plate 9) of each gate (not shown). is configured to do so.

As shown in FIGS. 2 and 3, the delivery device 12
In this example, a left conveyor chain 23 is endlessly stretched across the left drive sprocket 21 and driven sprocket 22 above both ends of the frame 20, and a right conveyor chain 26 is endlessly stretched across the right drive sprocket 24 and driven sprocket 25 in parallel. While the first conveyor device 3 is extended, the lifter plates 9 are arranged along the left and right conveyor chains 23 and 26 of the first conveyor device 3, and the lifter plates 9 are arranged on both sides on which the stacked cylinder blank layer 2 is received on the upper surface. receiving protrusion 27,
A plurality of blank receiving portions 30 are arranged in parallel on the horizontal rod 31 in a direction perpendicular to each other in correspondence with each gate. Vertical rod 3
Rack 33 formed on two sides and cylinder 34
A pinion 37 is interposed between the piston rod 35, which is movable in and out, and a rack 36, which is connected to the outer end of the piston rod 35 and can be slid in the horizontal direction. The chains 23 and 26 are configured to be vertically movable up and down to the upper limit position where the corresponding blank receiving portions 30 face the bottomless open lower end of the gate (not shown) of the tandem slitter 1. In the figure, numerals 38 and 39 are a drive motor and a power transmission chain for the first conveyor device 3.

As shown in FIGS. 2 and 4, the intermittent transfer device 15 is connected to the first conveyor device 3 of the delivery device 12.
A rack 42 is interposed between the terminal end 13 and the starting end 14 of the second conveyor device 4, and is fixed to a piston rod 41 that can freely move in and out of the cylinder 40, and the pinion 43 is engaged with the pinion 43 to rotate the pinion 43 reciprocatingly by 180 degrees. An upper clamp 49 that is movable up and down by the action of a cylinder 48 is attached to the upper support arm 45 of a rotary arm 47 in which an upper support arm 45 and a lower support arm 46 are fixed to a rotary shaft 44 fixed to the lower end and are horizontally protruded in parallel.
The transfer device 12
The stacked cylinder blank layer 2 sent to the terminal end 13 of the first conveyor device 3 is clamped from above and below by the upper and lower clamps 49 and 51, and is conveyed by half a rotation of 180° to the starting end 14 of the second conveyor device 4. 2 on the starting end 14 of the conveyor device 4, by vertically moving the upper and lower clamps 49, 51, respectively, to release the clamping of the stacked cylinder blank layer 2 and complete the transfer, and the process is repeated.

Incidentally, since the turning angle of the rotary arm 47 can be freely changed by changing the rack 42 and pinion 43, the arrangement angle of the second conveyor device 4 with respect to the first conveyor device 3 can be changed as appropriate depending on the installation space.

As shown in FIGS. 2 and 5, the second conveyor device 4 includes a left conveyor chain 55 and a right drive sprocket 56, which are endlessly stretched across a left drive sprocket 53 and a driven sprocket 54 provided above both ends of a frame 52. and a right conveyor chain 58 which is stretched endlessly over a driven sprocket 57 and are extended in parallel on both sides of the entire length above the pedestal 52.

As shown in FIG. 5, the transfer positioning device 17
is the transfer position 1 of the stacked cylinder blank layer 2 from the end 19 of the second conveyor device 4 to the elevator conveyor device 5.
6, a piston rod 60 that can freely move in and out of the cylinder 59 and an L-shaped lever rod 62 that can swing freely about a pivot 61 are connected by a link 63, and the other end of the L-shaped lever rod 62 is connected to a second conveyor device. A rod 65 is vertically movably supported through a support cylinder 64 installed vertically on the frame 52 of No. 4, and is connected to the lower part of the rod 65.
Four push rods 68, 69, 7 are attached to the upper end of the rod 65 protruding from the tip of the support cylinder 64 via a connecting plate 67.
0,71, and the push rods 68, 69, 70,
The upper end of 71 is connected to four half-moon-shaped lifting plates 76, 77, 78, 79 which are pivoted 72, 73, 74, 75 to the side frame 52a of the pedestal 52, respectively.
2, 73, 74, and 75, and by operating the piston rod 60 to protrude and retract,
Arc-shaped surface 8 of half-moon-shaped lifting plate 76, 77, 78, 79
0, 81, 82, 83 are movable in and out from the height of the upward direction 4a of the second conveyor device 4, and the stacked cylinder blank layer 2 is moved by the second conveyor device 4 to the elevator on the transfer positioning device 17. When the conveyor device 5 is transferred to the transfer position 16, the piston rod 60 is immediately moved regardless of whether the second conveyor device 4 is stopped or running.
77, 78, 79, the stacked cylinder blank layer 2 is lifted and separated from the placed contact state with the second conveyor device 4 upper section 4a, and the stacked cylinder blank layer 2 is moved onto the second conveyor device 4. This may be due to a shift in the stop position of the second conveyor device 4 even though the second conveyor device 4 is placed on the predetermined placement position and transported, or even though the second conveyor device 4 is at the predetermined stop position. The structure is configured to prevent the transfer standby position to the elevator conveyor device 5 from being deviated from the predetermined position due to the placement position being deviated from the predetermined position.

As shown in FIGS. 6 and 7, the elevator conveyor device 5 is mounted on a pedestal 84 that straddles the terminal end 19 of the second conveyor device 4 and the transfer alignment position 17 of the transfer position 16. The lower surfaces of both left and right ends of the stacked cylinder blank layer 2 waiting on the half-moon-shaped lifting plates 76, 77, 78, 79 of the transfer and positioning device 17 over the sprockets and the driven sprockets 85, 86 mounted horizontally above the sprockets. Both left and right chains 90, 91, which are equipped with hook pieces 89 for supporting the front and rear parts of 87, 88, are mounted at equal intervals, and are hung upright and parallel on both left and right sides, with the second conveyor device 4 terminal end 19 and transfer positioning device 17 sandwiched therein. The stacked cylinder blank layers 2 waiting on half-moon-shaped lifting plates 76, 77, 78, and 79 of the vertical transfer and alignment device 17 are sequentially moved toward the blank pusher device 18.

As shown in FIGS. 6 and 8, the blank pusher device 18 includes an elevator conveyor device 5.
Left and right guide members 95 and 96, each having guide grooves 93 and 94 extending in the side surfaces thereof, are installed on the lower side of the frame 92 extending from the upper area to the upper area of the can body blank accumulation stacker 8 of the shell forming machine 6. A guide 97 is formed so as to extend and have guide grooves 93 and 94 facing inward, respectively, and the guide grooves 93 and 94 extend in the guide 97.
Wheels 98, 99, 10 rotating and passing through 94
0 and 101 are attached to the front and rear of the left and right sides of the support body 102 so as to freely rotate, while the hanging wall portion 103 and the receiving plate 1
A pusher mechanism 106 formed by fixing an L-shaped receiving portion 105 consisting of 04 to the support body 102,
A drive sprocket 1 is coaxially fixed to a sprocket shaft 110a to which a sprocket 110 is connected to a sprocket 108 fitted to an output shaft 107a of a motor 107 mounted on a frame 92 and capable of freely controlling forward and reverse rotation.
11 and a driven sprocket 112 fixed to a sprocket shaft 112a mounted on the tip of the frame 92.
It is connected by a sustaining portion 114 formed to protrude upward and is configured to be able to freely reciprocate between the upper area of the elevator conveyor device 5 and the upper area of the can body blank accumulating stacker 8 of the shell making machine 6.

Can body blank accumulation stacker 8 of the body making machine 6
Coil springs 123, 124 are attached to support rods 121, 122, which have horizontal bars 115, 116 projecting parallel to each other from their upper ends, and blank return movement prevention pieces 119, 120 fixed to their tips, each having opposing inclined surfaces 117, 118, respectively. The blank lowering mechanism 1 is constructed by being supported through the horizontal bars 115 and 116 so as to be able to swing freely, and by constantly urging the inwardly protruding mutual approach habit by the elastic force of the coil springs 123 and 124.
25.

In addition, in the can body blank automatic supply line A described above, the second conveyor device 4 is installed in parallel to the first conveyor device 3, and the terminal end 1 of the first conveyor device 3 is installed.
Although an example of an intermittent transfer device configured to be able to freely move half a rotation 180° reciprocally between the start end 14 of the first conveyor device 3 and the second conveyor device 4 has been shown, the present invention is not limited thereto. 2nd conveyor device 4 on extension
The stacking cylinder blank layer 2 is installed from the terminal end 13 of the first conveyor device 3 to the starting end 14 of the second conveyor device 4.
or the second conveyor device 4 is configured to transfer the sprocket SP shown in the imaginary line in FIG.
1. Consisting of two conveyor devices arranged in series with SP2, the transfer alignment device 17 and the stacking cylinder blank layer 2 have arrived at a predetermined position in front of the transfer alignment device 17 on the conveyor device on the terminal side. A device equipped with a photoelectric sensor PS2 that detects this also belongs to the scope of the present invention.

Since the automatic can body blank supply line A of the present invention is constructed as described above, at the start of operation, the lifter plate 9 of the delivery device 12 is raised by activating the cylinder 34 and advancing the piston rod 35, and when it reaches the upper limit position. The stock is placed on the support plate 10 extending into the bottomless opening lower end of a plurality of gates (not shown) arranged in parallel at the discharge end of the delivery device 12 which is receiving the cut can body blanks of the tandem slitter 1. The resulting group of can body blanks is transferred to the receiving protrusion 27 of each blank receiving section 30,
28, the support plate 10 moves outward from between the stacked cylinder blank layer 2 and each blank receiving part 30 of the lifter plate 9, and when the tandem slitter 1 is activated, each of the lifter plates 9 When a predetermined number of can body blanks are stored on the blank receiving section 30, the piston rod 35 is retracted and the rack 36 and pinion 3 are loaded.
7. The support plate 10 is lowered by the action of the vertical rod 32 equipped with the rack 33, and at a certain point the support plate 10 is advanced again to wait for receiving the next can body blank, while the lifter plate 9 continues to lower the first can body blank. The two groups of stacked cylinder blank layers are transferred onto both the left and right conveyor chains 23 and 26 of the conveyor device 3 in close contact with each other, and the lowering of the lifter plate 9 is stopped. Then, the two groups of stacked cylinder blank layers transferred in close contact between the front and rear are determined according to the detection result of whether or not the stacked cylinder blank layer 2 exists at the terminal end 13 by the photoelectric sensor PS1 installed at the terminal end 13. It is conveyed to the terminal end 13 by a first conveyor device 3 which operates intermittently. Then, when the stacked cylinder blank layer 2 is delivered to the terminal end 13, the first conveyor device 3 is stopped in accordance with the detection of the stacked cylinder blank layer 2 by the photoelectric sensor PS1, and then the waiting intermittent transfer to the terminal end 13 is performed. The upper and lower clamps 49, 51 of the loading device 15 clamp the stacked cylinder blank layer 2 from above and below by the action of the cylinders 48, 50, and then the rotary arm 47 clamps the cylinder 40, piston rod 41, rack 42,
Under the action of the pinion 43, a half turn of 180 degrees is made from the terminal end 13 of the first conveyor device 3 to the starting end 14 of the second conveyor device 4, and at the starting end 14 of the second conveyor device 4, the upper and lower clamps 49, 51 are moved to the cylinder 48, respectively.
When the transfer to the second conveyor device 4 is completed, the second conveyor device 4 moves by a predetermined pitch toward the terminal end 19, that is, toward the elevator conveyor device 5, and then stops. On the other hand, the rotating arm 47 returns to the terminal end 13 of the first conveyor device 3 by a half turn of 180° in order to transfer the next stacking cylinder blank layer 2, and the rotating arm 47 returns to the terminal end 13 of the first conveyor device 3 by intermittent movement of the first conveyor device 3. The next stacked cylinder blank layer 2, which has been sent to and is waiting, is transferred from the terminal end 13 of the first conveyor device 3 to the start end 1 of the second conveyor device 4 in the same manner as described above.
4, and the second conveyor device 4 carries out a conveying operation by a predetermined pitch in the same manner as described above.
In this way, the stacked cylinder blank layer 2 is conveyed onto the second conveyor device 4 to the transfer position 16 to the elevator conveyor device 5 in a state where the front and back are separated from each other. Immediately after the stacking cylinder blank layer 2 is delivered to the transfer position 16 to the elevator conveyor device 5, the transfer positioning device 17 is activated, that is, the piston rod 60 is activated to move the half-moon-shaped lifting plate 76,
77, 78, 79 are pivots 72, 73, 74, 75
The arcuate surfaces 80, 81, 82, 83 contact the lower surface of the stacked cylinder blank layer 2, and further lift the stacked cylinder blank layer 2 and connect it to the left and right conveyor chains 55, 58 of the second conveyor device 4. Cut off contact and stop. In addition, at the time when the stacked cylinder blank layer 2 is not detected by the photoelectric sensor PS2 installed before the transfer position 16 to the elevator conveyor device 5, the second conveyor device 4 does not detect the stacking body blank layer 2 by the intermittent transfer device 15. It starts when the transfer of the cylinder blank layer 2 onto the starting end 14 is completed, moves at a predetermined pitch, and then stops. However, as the stacked cylinder blank layer 2 progresses in sequence onto the second conveyor device 4, the photoelectric sensor SP2 detects When the stacked cylinder blank layer 2 is detected, the reference for the next stop is determined by the photoelectric sensor SP3 that detects that the stacked cylinder blank layer 2 has been delivered to the transfer position 16 of the elevator conveyor device 5. When it is detected that the heavy body blank layer 2 has been delivered to the transfer position 16 to the elevator conveyor device 5, the transfer positioning device 17 is activated and then the second conveyor device 4 is linked to stop. When the stacked cylinder blank layer 2 sent to the transfer position 16 to the elevator conveyor device 5 is stopped at a predetermined position by the action of the transfer alignment device 17, and the waiting for transfer to the elevator conveyor device 5 is completed. , the elevator conveyor device 5 is started and the left and right chains 90, The hook pieces 89 attached to the respective hooks 91 are supported, move up a predetermined pitch, and then stop. Then, when the half-moon-shaped lifting plates 76, 77, 78, and 79 of the transfer and alignment device 17 descend and the next stacked cylinder blank layer 2 is sent to the transfer position 16, the above operation is repeated again and the transfer is carried out at the predetermined position. The next hooking piece 89 of the elevator conveyor device 5 carries the stacked cylinder blank layer 2 that is in a standby state and moves it up. Then, the stacked barrel blank layer 2 is sequentially and intermittently lifted by the elevator conveyor device 5, and is carried into the can barrel blank accumulation stacker 8 installed upright on the barrel making machine 6 through the loading port 7 opened at the upper end thereof. When the stacked cylinder blank layer 2 is delivered to a predetermined height position sufficient for the elevator conveyor device 5 to stop, the blank pusher device 18 is started, that is, the chain 113 is endlessly rotated by rotation of the motor 107 in the clockwise direction of the arrow. The pusher mechanism 106 connected to the chain 113 is guided by a guide 97, that is, the guide grooves 93, 94
Wheels 98, 99, 100, and 101 rotate inside the can barrel blank stacker 8, and the can body blanks are transported to a predetermined height position by the elevator conveyor device 5. When the elevator conveyor device 5 stops, the can body blanks are carried by the hooking pieces 89. The L-shaped receiving portion 105 of the pusher mechanism 106 transports the stacked can body blank layer 2, which is waiting, from the hooking piece 89 toward the upper area of the receiving can body blank accumulating stacker 8. When the stacked barrel blank layer 2 approaches the blank lowering mechanism 125 mounted on the upper part of the can barrel blank accumulation stacker 8, both right and left corners of the front part of the stacked barrel blank layer 2 in the conveying direction , 120, and the pusher mechanism 106 carrying the stacked cylinder blank layer 2 moves further forward, so that the blank return movement prevention pieces 119, 120 are moved by the action of the opposing inclined surfaces 117, 118. As it moves outward as shown by the imaginary line in FIG. 9 against the elastic force of the coil springs 123 and 124, the stacking barrel blank layer 2 carried by the pusher mechanism 106 moves in the upper area of the can barrel blank accumulating stacker 8. When the stacking cylinder blank layer 2 has completely passed through, the blank backward movement blocking pieces 119, 120 return to the positions indicated by solid lines in FIG. 9 by the elastic force of the coil springs 123, 124. When the entry of the stacked cylinder blank layer 2 is detected, the motor 107 of the blank pusher device 18 is stopped and then started to rotate in reverse to return the pusher mechanism 106 to its original position. The rear left and right corners protruding left and right from the pusher mechanism 106 are locked by the blank return movement prevention pieces 119 and 120, which are returned to their original positions by the elastic force of the coil springs 123 and 124. 106
Can body blanks are lowered and carried into a stacker 8 for accumulating can body blanks in a body making machine 6 that does not lose its support as the can body blanks return.

A predetermined number of can body blanks cut into predetermined standard dimensions by the tandem slitter 1 as described above are stacked in a plurality of parallel gates (not shown) arranged in parallel at the discharge end of the tandem slitter 1. The can body blanks are automatically supplied to the can body blank accumulating stacker 8 of the can body making machine 6 on the can body blank automatic supply line A as a stacked body blank layer 2 consisting of The stacked cylinder blank layer 2, which is conveyed on the second conveyor device 4 toward the elevator conveyor device 5 in a separated state and sent to the transfer position 16 to the elevator conveyor device 5, is transferred to the elevator conveyor device 5. Transfer position 1
The stacked cylinder blank layer 2 sent to the transfer position 16
As soon as the stacking cylinder blank layer 2 reaches the second conveyor device 4, it is lifted up by the transfer and positioning device 17, the contact with the second conveyor device 4 is cut off, and the transfer and positioning device 17 is activated to transfer the stacked cylinder blank layer 2 to the second conveyor device 4 and the second conveyor device 4. By stopping the second conveyor device 4 after breaking contact with the second conveyor device 4, it is possible to prevent the stop position of the second conveyor device 4 from shifting and the stacked cylinder blank layer 2 to be placed at a predetermined position on the second conveyor device 4. Even though the second conveyor device 4 has stopped at a predetermined position, the waiting position of the stacked cylinder blank layer 2 is shifted to the front or beyond the transfer position 16 to the elevator conveyor device 5. The occurrence of such a situation has been resolved,
The elevator conveyor device 5 is moved up in an unstable state without being securely transferred to the hooking piece 89,
During the ascent, the can body blank falls from the hook 89 due to vibrations of the device, and the can body blank gets caught in the operating part of the device, causing a decrease in the engagement rate, such as having to temporarily stop the operation. This eliminates the occurrence of can-making lines, increases the efficiency of the can-making line, and increases the production rate, which in turn leads to cost reductions.In addition, the position of the tandem slitter and body-making machine can be changed according to the shape and convenience of the installation space, which saves space in the factory. It has excellent effects such as leading to effective utilization.

[Brief explanation of the drawing]

Fig. 1 is a diagram schematically showing the layout of an embodiment of the automatic can body blank supply line of the present invention, Fig. 2 is a partially omitted plan view of the same, and Fig. 3 is a left side view of the delivery device. , Fig. 4 is a schematic explanatory diagram of the operation of the intermittent transfer device, Fig. 5 is a left side view of the second conveyor device and transfer positioning device, and Figs. 6 and 7 are partially cutaway views of the elevator conveyor device. A front view and a partially cut-away left side view, Fig. 8 is a partially cut-away left side view of the blank pusher device and the stacker for accumulating can barrel blanks on the shell making machine, and Fig. 9 is an explanation of the operation of the blank lowering mechanism. FIG. A... Can body blank automatic supply line, 1... Tandem slitter, 2... Stacked barrel blank layer, 3
...First conveyor device, 4...Second conveyor device, 5...Elevator conveyor device, 6...Body making machine, 7...Can body blank inlet, 8...Can body blank accumulation stacker, 9... lifter plate,
11... Lifter mechanism, 12... Delivery device, 15
...Intermittent transfer device, 17...Transfer positioning device,
18... Blank pusher device.

Claims (1)

[Scope of Claims] 1. A first stage step in which a group of stacked body blank layers, in which a predetermined number of can body blanks cut into specified dimensions are stacked and stocked, is conveyed to the next process in a close contact state in the conveyance direction; The leading end of the transported stacked cylinder blank layer group is held from above and below one by one, rotated to release the clamps, and transferred to the next process, where each of the front and back of the stacked cylinder blank layer group is spaced at equal pitches. A two-stage process, a third stage process in which the stacked cylinder blank layers conveyed at equal pitch intervals are lifted up a little when they arrive at a predetermined position, and are placed on standby; and the stacked cylinder blank layers that are waiting to be positioned are raised to a predetermined height. A fourth stage process of elevating, and a fifth stage process of sequentially transporting the stacked cylinder blank layers that have reached the predetermined height to a predetermined position and stacking and supplying the stacked cylinder blank layers are sequentially integrated. An automatic can body blank feeding method. 2. A group of stacked shell blank layers, which are made by stacking and stocking a predetermined number of can bodies cut to a specified size by a tandem slitter, are loaded closely together in the transport direction by a lifter mechanism, and are transported while maintaining that state. a delivery device comprising a first conveyor device;
The stacked cylinder blank layer sent to the end of the first conveyor device is held at one place from above and below and rotated to the second conveyor.
an intermittent transfer device for transferring onto the starting end of the conveyor device;
The second conveyor device performs intermittent pitch feeding when the stacked cylinder blank layer is transferred onto the starting end, and the stacked cylinder blank is placed at a predetermined stacked cylinder blank layer transfer position set on the second conveyor device. A transfer positioning device that slightly lifts and positions the stacked cylinder blank layer when the layer is sent, and a stacked cylinder blank layer waiting to be lifted at the stacked cylinder blank layer transfer position, sequentially to a predetermined height. an elevator conveyor device that moves up intermittently; and a blank pusher device that supplies the stacked barrel blank layer that has been lifted to the predetermined height by the elevator conveyor device to a can barrel blank accumulation stacker. This is an automatic can body blank supply line that organically connects the can body blanks.