JPS6149199B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention is directly connected to a depalletizer that disassembles and sends out groups of empty containers such as empty cans and empty bottles that are stacked between stacked pallets in a container packaging process such as canning and bottling beverages and food products. The present invention relates to an automatic operation control method for an empty container conveyance and supply line consisting of a large number of various conveyor groups interposed and connected between an accumulator and a filler for filling a group of empty containers with beverage liquid or food. In this type of conventional empty container conveyance and supply line, there is a discrepancy between the number of empty containers discharged by the accumulator and the number of empty containers filled by the filler. The system uses on/off two-position control to stop the accumulator when the group of empty containers becomes full, or to move the accumulator when there are a certain number of empty containers on the conveyor. This has the disadvantage of causing collisions and scratches on the outer bottom surface of the empty container.
In the operation control method related to No. 872058, a group of empty containers was stored on a group of conveyors, and the group of empty containers was conveyed at a constant density while applying line pressure to prevent the group of empty containers from falling over. After all, the conveyor chain always causes slip friction on the outer bottom surface of empty containers, and this phenomenon is noticeable in clogging of distribution zones. Due to the uneven distribution of empty containers, the line pressure often causes collisions between small and dense blocks, which creates noise, so thin-walled two-piece can containers, which have recently become popular, were selected for transportation. At times, large slip marks may be left on the bottom radius of the outer bottom surface, causing the surface treatment film to be chipped off and cause rust, and dents and dents may be caused on the can body when hit by line pressure. On the other hand, the conventional system line requires a total length of at least 100 m or more and cannot be applied in places where there is not much space for setting up the line. In view of the shortcomings of the conventional methods and systems, the present invention aims to reduce the risk of rear-end collision damage caused by unpacking and transport of empty containers to the filler, so as to prevent the occurrence of severe scratch marks on the outer bottom surface of the empty containers caused by the conveyor. An automatic operation control method and operation control system for an empty container conveyance and supply line that realizes a logistics management system that can reliably and smoothly balance the quantities of equipment on the container supply side and equipment on the empty container demand side, and that does not require much line installation space. We aim to provide the following. A description will be given with reference to an example of the layout of the empty container conveyance and supply line Y shown in FIG. 1 to which the automatic operation control method of the present invention is applied. The empty container conveyance line Y includes an accumulator 2 directly connected to a depalletizer 1, and numerous conveyors 3a.
A combiner 3 is a reduced-row conveyor consisting of a stepped integrated conveyance belt that carries groups in parallel in multiple rows for reduced-row conveyance, a first turntable 4 as a circular rotary conveyor, a first conveyor 5, and a second conveyor 6. ,
A second turntable 7 as a circular rotary conveyor, a third conveyor 8, a third turntable 9 as a circular rotary conveyor, a fourth conveyor 10, and a twister 1 that tilts the conveyance posture of the group α of empty containers at a predetermined inclination.
1. A rinser 12 that cleans the empty containers α group, a twister 13 that returns to the conveying position, and a seamer 14 that tightens the lid immediately after filling the empty containers α with beverage liquid or food. It is integrally connected to a feeler 15 which operates in synchronization with this. Here, as shown in FIG. 2, an accumulator 2, a combiner 3, and a first turntable 4 are installed.
and first to fourth conveyors 5, 6, 8, 10
The respective drive motors IMO, IM1, IM3, IM
4, IM5-b, IM5-a, IM6, IM7
Multi-series parallel connection is made to AC200V three-phase power circuits R, S, and T via earth leakage breakers NFB2 to NFB5, while earth leakage breakers are connected from three-phase power circuits R and T.
Single-phase power supply circuit 201 drawn out via NFB8,
From 202, transformer TR and safety device FU1, FU
Control parallel bus bars 601 and 602 with an operating voltage conversion circuit 16 interposed on the input side are connected through 2, and the other single phase power supply circuit 201 and 202 and control parallel bus bar 60
Variable speed electromagnetic joints VS0, VS1, VS are provided corresponding to the respective drive motors IM0 to IM7 as shown in FIGS. 3 to 5.
3, VS4, VS5A, VS5, VS6, VS7 control circuits 17, 18, 19, 20, 21, 22, 2
3 and 24 are inserted in parallel in multiple rows, and further straddled between the single-phase power supply circuits 201 and 202, sequence relay circuits 25, 26, and 27 as shown in FIGS.
Insert multiple rows in parallel. The drive motor 28 of the seamer 14, which is connected to the feeler 15 by an appropriate synchronizing means, is a pole-converting type squirrel-cage motor, and by switching the pole number, it can be set to, for example, a high-speed 1200 rpm normal operating speed and a low-speed 600 rpm emergency operating speed. In addition, a speed detector 29 is installed, and during normal operation, a high speed detection signal is sent to the open contact RY-H at address 118A of the sequence relay circuit 25 in Figure 6, which closes and connects the timer relay at the same address. By energizing TM9 and closing the timer open contact TM9 at address 119 with a certain second delay, the stop relay RY related to manual operation at the same address is activated.
11 and the start relays RY11A to RY11D related to high-speed operation of the control circuits 18 to 24 shown in FIGS. Send it to the open contact RY-L and close it to excite the stop relay RY12 associated with manual operation at the same address and the start relays RY13A-D associated with low-speed operation of control circuits 18-24 in FIGS. 3 to 5. As the operating speed of the seamer 14 is varied, the first to fourth conveyors 5, 6, 8, and 10 and the first turntable 4 are controlled so as to be able to follow and operate in synchronization. The second and third turntables 7 and 9 mechanically connect their drive mechanisms to the drive mechanisms of the third and fourth conveyors 8 and 10 that follow, respectively. The drive output is transmitted to the drive mechanisms of the second and third turntables 7 and 9 to operate at the same speed as the third and fourth conveyors 8 and 10. As shown in FIGS. 9 and 10, a projector 3 serving as a pair of detection heads for an empty container flow velocity detector 30 is placed at a position approximately 9 m before the final end of the fourth conveyor 10, with a plastic plate chain 10a sandwiched therein.
1 and a photoreceiver 32 are installed opposite each other to freely block light for each of the empty containers α group to be transported, and the empty container flow velocity detector 30 is set with a crystal oscillator 33 that generates a standard time pulse signal PS1 every 1/1000 seconds. A preset counter 35 to which an arbitrary upper limit value can be set by means of a counter 34 is provided.
, the emitter/receiver 31, 32 receives the standard time count pulse signal PS1 from the crystal oscillator 33 one after another, and the light is blocked for each empty container α to generate the empty container passage detection signal PS.
2 is counted only while inputting the empty container α, and when the empty container α passes, the empty container passing detection signal is blocked by the empty container α.
When PS2 is released, it is reset each time, and the same operation is repeated for each subsequent empty container α, and only when the count value reaches the preset value, addresses 46 and 47 in the control circuit 17 of FIG. 3 are reset. Low speed switching command signal PS is sent to both close and open contacts RY-SM1.
3 is automatically operated to control the operating speed of the accumulator 2 at a low speed by switching open/close. The conveyor speed is the same as V unless it is clogged, but if the empty containers α group start to clog in front, V>V, and the count number on the preset counter 35 becomes a large value.
When the set number is exceeded, a low speed switching command signal PS3 is transmitted, and when the seamer 14 shifts from high speed to low speed operation, the setting device 34 also operates in conjunction with the seamer 14.
The upper limit value corresponding to low speed operation is reset,
It is also reset for a certain period of time when the seamer 14 is stopped and when the seamer 14 is switched from low speed to high speed. At an intermediate position approximately 3 m from the end of the third conveyor 8, as shown in FIG. 10, a light projector 37 and a light receiver 38, which are a pair of detection heads of an empty container flow rate detector 36, are installed with a plastic plate chain 8a sandwiched therein. Each of the empty containers α group to be transported is installed opposite to each other so as to be able to freely block light, and the empty container flow rate detector 36 receives a reference time clear pulse signal PS at intervals of, for example, 2 seconds.
The preset counter 41 has a crystal oscillator 39 that generates 4, a preset counter 41 that can freely set an arbitrary lower limit value using a setter 40, and a display 42 that displays the count.
The empty container passage detection signal PS5 transmitted every time the empty container α passing between the light receiver 38 and the light receiver 38 is blocked, is counted and displayed, and is counted by the reference time clear pulse signal PS4 from the crystal oscillator 39, i.e. The number of empty containers α that pass during the 2 seconds of the reference clear pulse signal PS4 is counted, the total count signal PS6 is output, the counted value is displayed on the display 42 in the next 0.5 seconds, and the clearing operation is performed in the next 0.5 seconds. are repeated in sequence, and only when the counted value does not reach the preset value, a reset pulse signal PS7 is issued to the preset counter 35 of the empty vessel flow rate detector 30, the empty vessel flow rate detector 30 is reset, and the control circuit of Fig. 3 is activated. Closing of 46th and 47th in 17
At the same time as switching the open contact RY-SM1 to its original state and operating the return operation,
A high-speed switching command signal PS8 is sent to the close/open contact RY-SM2 at address 43, and the operation speed of the accumulator 2 is automatically controlled at high speed by switching open/close. Collect information about low-speed operation and depopulation as soon as possible and respond quickly. The setting device 40 is configured so that when the seamer 14 shifts from high speed to low speed operation, the lower limit value corresponding to the low speed operation of the seamer 14 is reset. Proximity sensors 43, 44, 4 installed on the starting end sides of the third conveyor 8 and the fourth conveyor 10
5, 46 is the sequence relay circuit 25 shown in FIG.
Open contact 700M-1A, 70 from address to address 110
Sends an empty container stop signal to 0M-1B, 700M-2A, and 700M-2B, closes them, and energizes the emergency relays RY4A to RY5B associated with the empty container overturning display at the same address, thereby starting the sequence relay circuit 26 shown in FIG.
Open contacts RY4A to RY5B at addresses 148 to 151
is closed and the open contact RY9 at address 148 is closed/closed contact.
Relay RY under the condition that RY25 and ST2 are closed
21 and lights up the light L2 attached to depalletizer 1 at address 149, while the monitoring personnel stops the operation of depalletizer 1.
To excite relay RY21, open the closing contact RY21 at address 143 of the same circuit 26 and energize the timer relay at the same address.
By demagnetizing TM3 and opening the open contact TM3 at address 146, the relay RY18 at the same address is demagnetized, and the open contacts RY18 at addresses 68 and 69 of the control circuit 21 shown in FIG. 4 are opened to open the variable speed electromagnetic joint. VS5
A is cut off and the first conveyor 5 is stopped urgently. In parallel with this, the open contact RY21 at address 179 of the sequence relay circuit 27 shown in FIG. 8 is closed,
On the condition that the open contact RY9 related to automatic operation at the same address is closed, the alarm relay RY28 at the same address is energized, the open contact RY28 at address 184 is closed, and the alarm bell BEL1 at address 183 is sounded. During this time, the overturned empty containers α group are corrected to an upright position to eliminate the clogging condition and ensure a normal flow rate. Sensor 47 attached to the fourth conveyor 10
When detecting that the empty containers α group have started to circulate immediately before, it sends an empty container arrival detection signal to the open contact HT-2 at address 105 of the sequence relay circuit 25 shown in FIG. When 2 is closed, relay RY2 at the same address is energized and the open contact RY2 at address 122 is activated.
closes, energizes the timer relay TM1 at the same address, and after a predetermined delay, the timer close contact at address 123
By opening TM1, relay RY14 related to the initial start is demagnetized. In parallel with this, the closing contact RY2 at address 127 is opened, and on condition that the timer closing contact TM2 at address 126 is open, the relay RY15 at the same address is demagnetized. Open contacts at addresses 36 to 36
Open RY15 and close contacts RY at addresses 37 and 38
15 is closed and the operating voltage of the control parallel buses 601 and 602 is switched from low voltage to high voltage, and the accumulator 2, combiner 3, first turntable 4, and first to fourth conveyors 5, 6, 8, and 10 are operated at high speed. shall be. Photo sensors 50 and 51 each having a pair of heads 48 and 49 attached to the first transport conveyor 5 and discharge conveyor A count and display the number of empty containers α group that have passed between the heads 48 and 49 within a certain period of time. However, it is used to make the number of containers discharged from the seamer 14 and the number of containers supplied from the combiner 3 as equal as possible, and the synchronization work is as follows.
Adjustment and monitoring personnel manually adjust the variable resistor VRLL, which is the regulator at address 43 of the control circuit 17 shown in Fig. 3, while checking the displayed counts, and finely adjust the operating current, which is the excitation current of the variable speed electromagnetic joint VSO of the accumulator 2. The number of empty containers α group discharged from the accumulator 2 to the combiner 3 is controlled in the process by finely adjusting the operating speed of the accumulator 2. In the operating voltage conversion circuit 16 shown in FIG.
AVR is an automatic voltage regulator, SD1 and SD2 are connected in parallel to the control parallel buses 601 and 602, and each contact RY1
5 is the slider for setting low or high pressure, and REC is a DC unit that is a rectifier. Control circuit 1 of accumulator 2 shown in Fig. 3
7, a pair of
VRH and VRL are high/low setting resistors, which are selected via the respective contacts RY-SM2 and RY-SM1 by the high-speed switching command signal or low-speed switching command signal of the sensors 30 and 36, and are connected to a pair of resistors intervening in the follow-up tuning circuit 53.
VROH and VROL are high-low setting resistors corresponding to high-speed and low-speed operation of the seamer 14, and are open contacts XL9-2 related to the operation of the depalletizer 1 at address 186 of the sequence relay circuit 27 shown in FIG.
is closed, the photo sensor 50 attached to the first conveyor 5 switches the seamer 14 to low-speed operation, and the number of empty containers α group passing within a certain period of time drops to a certain value, or When the open contact CM-1 at the same address closes in response to the low-speed switching command signal sent when the flow of containers α group is stagnant and a clogging phenomenon is observed, the timer relay TM8 at the same address is energized, and the timer at address 187 is activated. Opening contact TM8 is delayed by a predetermined second to excite relay RY29 at the same address, and self-holding relay RY29 at address 188 and control circuit 1 are energized.
7, the closed contacts RY29 at addresses 44 and 45 are opened, and the open contacts RY29 at addresses 48 and 49 are closed to perform low speed operation corresponding to the low speed of the seamer 14,
FO is the control panel, 54 is the tachogenerator TG0 that works with the electromagnetic joint VS0, and the speedometer SM0 and reference resistor RR that are connected in parallel to this as necessary.
55, which is a feedback circuit having a constant voltage of 0 and is used to always maintain stable operating characteristics of each electromagnetic coupling VS0
is the on/off interlock switch for accumulator 2. Each control circuit 18 to 24 shown in FIGS. 3 to 5
, a pair of VR1H and VR1L, VR3H and VR3L, which intervened in each follow-up tuning circuit 56,
VR4H and VR4L, VR5AH and VR5AL, VR5
bH and VR5bL, VR6H and VR6L, VR7H and VR
7L is a high/low setting resistor corresponding to high-speed and low-speed operation of the seamer 14, and each open contact RY is controlled by a high-speed operation signal or a low-speed operation signal from the speed detector 29 attached to the drive motor 28 of the seamer 14.
11 or each open contact RY12, the variable speed electromagnetic joints VS1 to VS7 are controlled to follow the operating speed of the seamer 14, and F1 to F
7. T3-T7 are interposed in each control circuit 18-24, and the control panel 57 is connected to each variable speed electromagnetic joint VS1-
Takoji generator TG1~TG that works with VS7
7, a feedback circuit having speedometers SM1 to SM7 and reference resistors RR1 to RR7 connected in parallel to each variable speed electromagnetic joint VS1 as necessary.
~ 58 in Fig. 3 is for keeping the operating characteristics of VS7 stable at all times.
This is an off-linked switch. The operation of the conveyance supply line Y to which the method of the present invention is applied is started using the sequence relay circuit 25 shown in FIG.
Among the switch selector type changeover switches mounted on the starting operation panel CS-1 installed between No. 110 and No. 111, the manual switch MS is turned on during adjustment or repair operation to initialize relays RY6 and RY7. The start switch SS is turned on when the leading ends of the empty containers α group are placed on standby for transportation to the proximity sensor 47 installation position of the empty conveyance supply line Y prior to the operation of the seamer 14 and filler 15, and relays RY6, RY8, automatic switch
When the seamer 14 and the filler 15 start steady operation, and the driving speed of the conveyance supply line Y can follow and synchronize with the operating speed of the seamer 14, AS is turned on and the relay RY6 connects to the open contact RY11 at addresses 111 and 112. Alternatively, relay RY9 is closed on the condition that either RY12 is closed. Relay RY6 is energized by open contact RY6 at address 128.
is closed, and either the manual switch MS or the automatic switch AS of the three-notch selector type changeover switch mounted on the operation panel CS-2 installed between addresses 128 and 133 is in the on state. The relays MS1 to MS4 of the accumulator 2 and combiner 3 at the same addresses to 131 are energized, and the electromagnetic contacts MS1 to MS4 included in the motor drive circuit IMC shown in Fig. 2 are closed all at once. At the same time as starting IM0 to IM4, the open contact RY6 at address 135 of the sequence relay circuit 26 shown in Fig. 7 is closed, and each relay at the same address to address 138 is activated.
By energizing MS5 to MS7, address 139 to
The open contacts MS5 to MS7 at address 142 are closed, and the open contacts MS5 to MS7 at address 147 are simultaneously closed to excite relay RY19 at the same address and light L1 is turned on. Each drive motor included in the motor drive circuit IMC shown in Figure 2
Start IM5-b to IM7. Relay RY7 is energized by open contact RY7 at address 113.
is closed and the relays RY7A to 7D at the same addresses are energized to activate each control circuit 18 to 21 shown in FIGS. 3 to 5.
At the same time, close the open contact RM7 at address 132, and close the open contact RY7 at address 132, and close the manual switch at the same address.
MS, by energizing relay RY16 on the condition that closed contacts RY10 and RY3 are closed, open contacts RY16 at addresses 40 and 41 shown in Fig. 3 are closed, and each control circuit 17 to 20 is in the operating state. On the one hand, the closing contact RM7 at address 120 is opened, and on the other hand, the opening contact RY7 at address 142 of the sequence relay circuit 26 shown in Fig. 7 is closed, and the closing contact RY10 at the same address is closed. If the relay RY17 at the same address is energized under the condition that the open contacts MS5 to MS7 are closed, the open contacts RY at addresses 76 and 77 in Fig.
Control circuits 22 to 24 shown in FIG. 5 by closing 17
put it into operation. Relay RY8 is energized by open contact RY8 at address 114.
is closed to excite the relays RY7A to 7D at address 113, and at the same time, the open contact RY8 at address 123 is closed. The relay RY9 is energized by open contacts RY inserted in the lines at address 133 and addresses 143, 148, and 179 of the sequence relay circuit 26 shown in FIG.
Force 9 to close all at once. In this way, the sequence relay circuits 25, 26, and 27 shown in FIGS. 6 to 8 are sequentially operated in conjunction with each other to operate the motor drive circuit IMC in FIG. 2 and each control circuit 17 to 24 in FIGS. 3 to 5. The operation of the transport supply line Y is thereby controlled. However, in the automatic operation control method of the present invention, in the container packaging process such as canning and bottling beverages and food and drinks, the depalletizer 1 unloads and unpacks the empty containers α group that are piled up between pallets. A series of various conveyors 3 that carry out posture correction, washing, etc. during conveyance by various conveyors 3 to 10 connected in multiple stages to the group of empty containers α that have been delivered in large quantities, are arranged in a line, and are fed to the filler at high speed. In controlling the automatic operation of the empty container conveyance supply line Y consisting of ~10 groups, each seed conveyor 3 subordinate to the parent seamer 14
~10, each control circuit 18~ of the drive device capable of variable speed operation of the various conveyors 3~10 groups following and synchronizing with the operating speed of the seamer 14.
By collectively controlling the operation currents of 21, the drive speed of the conveyance supply line Y is uniformly controlled, and the conveyance status of the empty containers α group flowing on the conveyance supply line Y is controlled by the first to fourth conveyors. 5, 6, 8,
10 and an empty container flow rate detector 30 and an empty container flow rate detector 3 installed at appropriate positions on the discharge conveyor A, respectively.
6. Accurately grasp the distribution information sequentially sent from the proximity sensors 44 to 46, the sensor 47, and the photo sensors 50 and 51, and control the variable speed drive device of the accumulator 2 based on the obtained distribution information. The operational current of the circuit 17 is adjusted one by one to optimally control the operating speed of the accumulator 2, and the discharge supply amount of the empty containers α group from the accumulator 2 to the conveyance supply line Y is sequentially controlled to control the entire empty containers α group. It ensures the overall harmonious operation of the logistics system by immediately correcting distribution distortions. To explain in more detail, the operation control method of the present invention controls the empty container α group discharge capacity of the accumulator 2 by C _A
If the filling process number of the _filler 15 is C _F c・p・m, then the accumulator 2 is set so that C _A > C _F > C _B. Set the operating speed. Normally, the accumulator 2 is driven at C _A c・p・m, and the empty container α is detected by the empty container flow rate detector 30.
Detects clogging of the group and reduces the driving speed of the accumulator 2 to C _B c・p・m. If the empty container α group that has been decelerated to C _B c·p·m is detected by the empty container flow rate detector 36, the driving speed of the accumulator 2 is returned to C _A c·p·m again. The operating state of the conveyance supply line Y is to follow and synchronize with the operation of the seamer 14, while preventing an empty state from occurring on the conveyance supply line Y, and to detect a normal accumulation of empty containers α group by detecting the empty container flow velocity. Vessel 3
Conditions are set such that the trailing end of the empty containers α group is always on standby within 2 m from the mounting position of No. 0 toward the terminal end of the fifth conveyor 10. Here, a specific example of operation of the method of the present invention will be explained. ○B Normal operating speed sp and average conveyance pitch p of front and rear empty containers When the seamer 14 has a processing speed of 1200c・p・m 1st and 2nd conveyor 5, 6 sp: 86m/min p: 72mm 3rd conveyor 8 sp: 75m/min p: 62mm 4th conveyor 10 sp: 80m/min p: 66mm ○B Setting of normal ideal operating state When operating with empty containers α group about 3m from the linzer 12 accumulating If set, on the first and second conveyors 5 and 6,
208 locations 209 locations on the 3rd conveyor 8 57 locations + 151 locations on the 4th transportation conveyor 10 Total 625 locations○c When empty containers α group accumulates up to the mounting position of the empty container flow velocity detector 30 1st On the second conveyor 5, 6
208 pieces on the 3rd conveyor 8 209 pieces on the 4th conveyor 10 173 + 60 pieces Total 650 pieces The number of empty containers α group discharged from the accumulator 2 is
Empty container flow rate detector 36 reduced to 1100c・p・m
When the leading empty container α of depopulated transport reaches the empty container front and back interval average transport pitch p is: 78 mm above the 1st and 2nd transport conveyors 5, 6 68 mm above the 3rd transport conveyor 8 72 mm above the 4th transport conveyor 10 Empty The number of containers transported on the first and second transport conveyors 5 and 6 is
192 locations on the third transfer conveyor 8 161 locations + 48 locations on the fourth transfer conveyor 10 173 locations + 60 locations Total 634 locations In this way, the discharge speed of the accumulator 2 returns to the normal operating state, and the above ○I to ○ The procedure operations are repeated, and the distribution of the optimum distribution amount of the empty containers α group in the transport supply line Y is controlled in an integrated process. In other words, the empty container flow rate detector 30 is used to move from the stage ○C to the stage ○D, and the empty container flow rate detector 36 is used to move from the stage ○2 to the stage ○B. In the container 30, the preset counter 35 is normally set to about ``60'' when the speed of the fourth conveyor 10 is 80 m/min (however, if the speed is 80 m/min, the empty container α passage count value is ``60''). 39"), Linzer 12
If the empty containers α group gradually become clogged and reach the space between the light emitter 31 and the light receiver 32 of the empty container flow velocity detector 30, the conveyance speed of the empty containers α will naturally be slower than the speed of the fourth conveyor 10, and the pre-loading will be delayed. Set counter 3
5 will be counted up. The present invention includes a seamer 14 and various conveyors 3 to 10.
Groups are linked during automatic operation, and when the seamer 14 stops, all conveyor groups 3 to 10 stop, and when the seamer 14 operates, all conveyor groups 3 to 10 start, and the empty container flow rate detector 30 also starts. The set value of the empty container flow rate detector 36 is also changed to an appropriate value when the seamer 14 speed changes.
A plurality of child conveyors 3 are conveyed by the main seamer 14.
~While centrally controlling 10 groups, we have established a system management system that optimally controls the accumulator 2 according to the distribution situation of empty containers. Moreover, the conveyance supply line to which the present invention is applied can be a 50m line, which is half the length of the conventional type. It is implemented effectively and has excellent effects such as requiring less space for installation in the factory.

[Brief explanation of the drawing]

Figure 1 shows an example of the layout of an empty container conveyance and supply line to which the method of the present invention is applied, and a layout diagram of each sensor attached thereto. Figure 2 is a motor drive circuit diagram of an automatic operation control system implementing the method of the present invention. 3
Figures 6 to 8 are control circuit diagrams, and Figures 6 to 8 are the same control circuit diagrams.
The figure is the same sequence relay circuit diagram, and Figure 9 is the same sequence relay circuit diagram.
FIG. 10 is a perspective view of the arrangement of the emitter and light receiver of the empty container flow rate detector, and FIG. 10 is a block diagram showing the operational relationship between the empty container flow rate detector and the empty container flow rate detector. Y... Empty container transport supply line, α... Empty container,
1... Depalletizer, 2... Accumulator, 3... Combiner, 4, 7, 9... 1st ~
3rd turntable, 5, 6, 8, 10...1st
~4th conveyor, 14...seamer, 15...
...Feeler, 17-24...Control circuit, 25-
27... Sequence relay circuit, 28... Drive motor, 29... Speed detector, 30... Empty container flow detector, 31, 37... Light emitter, 32, 38...
Photoreceiver, 33, 39...Crystal oscillator, 34, 40
... Setting device, 35, 41 ... Preset counter, 36 ... Empty container flow rate detector, 42 ... Display device, PS1 ... Standard time count pulse signal, PS
2, PS5...Empty container passage detection signal, PS3...Low speed switching command signal, PS4...Reference time clear pulse signal, PS6...Total count signal, PS7
...Reset pulse signal, PS8...High speed switching command signal, IM0~IM7...Drive motor, VS0~
VS7...Variable speed electromagnetic joint, VRLL...Variable resistor.

Claims (1)

[Scope of Claims] 1. In an empty container conveyance supply line consisting of a large number of various conveyor groups interposed and connected between an accumulator directly connected to the next stage of a depalletizer and a filler, the system is connected to the filler and operated in synchronization with the same. The operating speed of the conveyance supply line is tracked and synchronized with the operating speed of the seamer, while the final stage conveyor of the empty container conveyance and supply line detects the flow velocity of empty containers, and when it reaches a set value, sends a low speed switching signal to the accumulator. At the same time, the middle conveyor detects the flow rate of the empty container, and when it does not reach the set value, it outputs a high-speed switching signal to the accumulator, and the operating speed of the accumulator can be adjusted at any time in accordance with the filling throughput of the filler. An automatic operation control method for an empty container conveyance and supply line, which comprises changing the speed and sequentially adjusting the amount of empty containers discharged from the accumulator to the starting end of the conveyance and supply line so as to correspond to the filling throughput of the filler. 2. The automatic operation control method for an empty container conveyance and supply line according to claim 1, wherein the operating speed of the seamer can be adjusted and set in two stages, high and low.