JPH0812025A - Supply and recovery of part box in production line and system thereof - Google Patents

Abstract

PURPOSE:To keep the constant quantity of works carried out by an operator even if the quantity of part boxes delivered from an automatic warehouse varies, by recovering the box quantity which is obtained by adding the reduction correction quantity of the boxes based on the reduction quantity of the supplied part boxes for the standard quantity of the recovered boxes in the recovery of he vacant part boxes on a part shelf. CONSTITUTION:When the quantity of the part boxes 2 which are transferred on a traction truck 7 is supposed to be 36 pieces, a management controller 10 demands the increase of the part boxes 2 by six pieces. The management controller 10 sets the increase correction quantity of boxes to three which is obtained by dividing six pieces by two. The management controller 10 determines the quantity of the part boxes 2 to be recovered to 12 pieces which is obtained by subtracting three boxes in the increase correction from 15 pieces to be recovered in standard. The management controller 10 controls the quantity 12 of the boxes to be recovered by a recovered box quantity instruction printer 20, and this quantity is printed out. An operator receives the printed-out paper sheet, and operates a traction vehicle 6 and pulls a traction truck 7. All the part boxes 2 transferred on the traction truck 7 are supplied on the part shelf 3 of a production line 1, and twelve vacant part boxes are recovered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supplying and collecting parts boxes in a production line and a system therefor, and more particularly to supplying parts boxes to parts racks of the production line and empty parts boxes of parts shelf of the production line. The present invention relates to a recovery method and its system.

[0002]

2. Description of the Related Art Conventionally, a parts box supply / recovery system for supplying a parts box containing parts from an automated warehouse to a parts shelf of a manufacturing line and collecting an empty parts box on the parts shelf is shown in FIGS. Show.

An operator 32 manufactures a product on each manufacturing line 31. When manufacturing this product, each manufacturing line 3
The parts in the parts box 34 supplied to the parts shelf 33 provided in the vicinity of 1 are used. The parts shelves 33 are first to third
The storage shelves 35a to 35c are provided and are inclined obliquely toward the manufacturing line 31 side. And production line 3
If the component box 34 is supplied from the first to third storage shelves 35a to 35c on the side opposite to 1, the component box 34 will be supplied to the manufacturing line 3
It is designed to slide to the 1 side. Therefore, the empty parts box 34
If the parts box 34 is removed, the parts box 34 slides
You can always take the four parts. A return shelf 36 is provided on the upper part of the parts shelf 33, and is inclined toward the side opposite to the manufacturing line 31. Worker 32 is empty parts box 3
4 is put on this return shelf 36.

An automatic warehouse 38 is installed in a part of the factory to temporarily store the parts box 34 which cannot be supplied in the parts shelf 33 in the manufacturing line 31. And
When the predetermined time comes, the management control device 40 controls the stacker crane 41 of the automatic warehouse 38 to issue the plurality of component boxes 34 placed on the pallet, and the operator sets the predetermined number of boxes. Take out to the delivery table 42. Further, the management control device 40 controls the unmanned transfer device 43 and conveys the component box 34 transferred to the delivery table 42 to the tow truck 46 of the tow vehicle 45. In this case, three tow trucks 45 are connected to the tow truck 46. Then, the operator operates the tow vehicle 45 to
The tow truck 46 of the table is towed to supply the parts box 34 to the parts shelf 33 of each manufacturing line 31.

At this time, in order to improve the supply and recovery efficiency of the parts box 34, the worker has to move the parts box 34 of the towing carriage 46.
Is supplied to the first to third storage shelves 35a to 35c of the component shelf 44, the empty component box 34 placed on the return shelf 36 is taken, and the trolley 46 is returned to. This operation is repeated, and when the supply of the component box 34 to the component shelf 36 is stopped, the operation is finished. Then, the operator pulls the tow truck 46 by the tow vehicle 45 and conveys the empty parts box 34 to the parts box storage 48.

The worker uses the parts shelf 3 in the manufacturing line 31.
You can sort the empty parts boxes 34 collected in 3 by factory,
Parts box storage 48 by sorting by box size and type
I put it in. Then, when all of the empty collected parts boxes 34 are placed in the parts box storage space 48, the operator operates the towing vehicle 45 and returns to the automatic warehouse 38 again. Then, the component box 34 is loaded on the tow truck 46 of the other tow vehicle 45 by that time, and the operator transfers to the tow vehicle 45 and supplies the component box 34 to the component shelf 33 of the manufacturing line 31 again.

[0007]

However, the automatic warehouse 3
The component boxes 34 that are unloaded from the container 8 are provided at predetermined time intervals in terms of management. Further, the number of boxes of the parts boxes 34 that are unloaded from the automated warehouse 38 varies depending on the operating state of the manufacturing line 31 at that time, and is not necessarily a constant number of boxes. Therefore, depending on the time, there may be a case where the number of parts boxes 34 that are unloaded from the automated warehouse 38 is larger than the normal number of boxes, or there may be a case that the number of parts boxes 34 that are unloaded is smaller than the normal number of boxes.

[0008] Here, the parts box 34 is usually larger than the automatic warehouse 3
When the number of warehousing from 8 is larger than usual, the worker supplies a large number of component boxes 34 to the component shelf 33 in the manufacturing line 31. On the other hand, since the empty parts boxes 34 can be collected by the number supplied from the tow truck 46, the empty parts boxes 3
4 will also be collected. Then, many empty component boxes 34 are sorted and placed in the component box storage 48. Therefore, when many parts boxes 34 are unloaded from the automatic warehouse 38, the time for supplying and collecting the parts boxes 34 increases, and thus the time for the towing vehicle 45 to return to the automatic warehouse 38 again is delayed. If the time required for the towing vehicle 45 to return to the automatic warehouse 38 is delayed, the time for the towing vehicle 45 that departs next after the transfer of the parts box 34 has already been completed will be delayed. Then, the parts box 34 supplied to the parts shelf 33 in the manufacturing line 31 is lost, and there is a possibility that the work in the manufacturing line 31 is affected.

Further, when a smaller number of the component boxes 34 are unloaded from the automatic warehouse 38 than usual, the worker supplies a small number of the component boxes 34 in the component shelf 33 in the manufacturing line 31. As a result, the empty parts box 34 is also collected in a small amount. Then, the small empty parts boxes 34 are sorted and placed in the parts box storage 38. Therefore, when a small number of parts boxes 34 are unloaded from the automated warehouse 38, the time for supplying and collecting the parts boxes 34 is shortened, so that the towing vehicle 4
The time when 5 returns to the automatic warehouse 38 again becomes earlier.

When the time for the towing vehicle 45 to return to the automatic warehouse 38 is shortened, the towing truck 4 of the next towing vehicle 45 to be departed.
There is a problem that all the component boxes 34 are not transferred to be transported to 6, and the tow vehicle 45 cannot be departed, and the work efficiency of the worker deteriorates.

The present invention has been made to solve the above-mentioned problems, and its object is to keep the amount of work performed by an operator constant even if the number of component boxes delivered from an automated warehouse changes. It is an object of the present invention to provide a method and system for supplying and recovering a component box in a production line that can be used.

[0012]

In order to solve the above-mentioned problems, the invention according to claim 1 is such that a worker transports a parts box to be unloaded from an automatic warehouse at a predetermined time by a transport means, A parts box is supplied to the parts shelf of the production line, and an empty parts box is collected on the parts shelf. If the number of parts boxes is greater than the preset standard number of supply boxes, increase the number of correction boxes based on the increased number of parts boxes to be supplied from the standard number of collection boxes to collect empty part boxes on the parts shelf. Collect the deducted number of boxes, and if the number of boxes of the parts boxes that are delivered from the automated warehouse and supplied to the parts shelf of the manufacturing line is less than the predetermined standard number of supply boxes, collect the empty parts box on the parts shelf. Supply for the number of standard collection boxes As its gist in that that the reduction correction box number based on the reduction box number of boxes parts to recover the number of boxes obtained by adding.

According to a second aspect of the present invention, an operator conveys a component box delivered from an automated warehouse at a predetermined time by a conveying means, supplies the component box to a component shelf of a production line, and In the method of supplying and collecting parts boxes in a production line that collects empty parts boxes on shelves, the transportation means starts from the automatic warehouse, supplies and collects the parts boxes and returns to the automatic warehouse again. Set, calculate the supply time to supply the parts boxes delivered from the automated warehouse to the parts shelves on the production line, subtract from the transfer time, and find the number of empty part boxes that can be collected by the remaining transfer time. The main point is to collect only the number of boxes from the parts shelf.

According to a third aspect of the present invention, box number counting means for counting the number of component boxes to be supplied to the component shelves of the manufacturing line,
Box number storage means for storing the standard number of supply boxes to be supplied to the parts shelf of the production line and the reference number of recovery boxes for recovering empty part boxes from the parts shelf of the production line, and the reference supply stored in the box number storage means Increase / decrease calculation means for calculating whether more or fewer component boxes are supplied to the component shelf, which is obtained based on the number-of-boxes counting means, and parts based on the result of calculation from the increase / decrease calculation means. If the number of boxes to be supplied is large, calculate the number of increased correction boxes for the increased number of boxes, subtract the increased number of correction boxes from the standard number of collection boxes, calculate the number of collection boxes, and calculate the number of boxes to be supplied from the standard number of supply boxes. If the number is small, the gist of the present invention is to provide a number-of-recovery-boxes calculating means for calculating the number of reduced-correction boxes with respect to the number of standard supply boxes and adding the number of reduced-correction boxes to the standard collection box to calculate the number of collection boxes. .

According to a fourth aspect of the present invention, the time setting memory for setting and storing the transportation time when the transportation means starts from the automatic warehouse, supplies and collects the component boxes in the manufacturing line, and returns to the automatic warehouse again. Means, supply and recovery time storage means for storing a supply time required for supplying one component box to the component shelf of the production line and a recovery time required for recovering one component box from the component shelf, and A box number counting means for counting the number of boxes of the parts boxes to be supplied to the parts shelf, and parts boxes based on the number of boxes of the parts boxes discharged from the automatic warehouse and the supply time stored in the supply / collection time storage means. Time calculation means for calculating the supply time to be supplied to the shelf and subtracting the supply time from the transfer time to calculate the remaining transfer time, and the remaining transfer time calculated by the time calculation means and one empty part box Further comprising a collection box number calculating means for calculating a box number of empty component box that can be recovered based on the recovery time for recovering the gist thereof.

[0016]

According to the first aspect of the present invention, the parts box to be supplied from the automatic warehouse to the parts shelf of the manufacturing line is delivered every predetermined time. If the number of delivered component boxes at this time is greater than the reference number of supply boxes, the number of increased correction boxes is calculated based on the number of increased boxes. Collect the number of boxes obtained by subtracting the number of increased correction boxes from the standard number of collection boxes for collecting empty parts boxes on the parts shelf. If the number of delivered component boxes is less than the reference number of supply boxes, the number of reduced correction boxes is calculated based on the number of reduced boxes.
Collect the number of boxes obtained by adding the number of reduced correction boxes to the standard number of collection boxes for collecting empty parts boxes on the parts shelf.

Therefore, when the number of parts boxes delivered from the automated warehouse increases or decreases with respect to the standard number of supply boxes, the standard number of recovery boxes is corrected based on the increase or decrease, and the number of component boxes is adjusted by the corrected number of standard recovery boxes. It can be recovered and a certain amount of work can be performed.

According to the second aspect of the present invention, a transportation time is set for transporting the parts box that has been unloaded from the automatic warehouse, supplying and collecting the parts box to and from the parts shelf, and then returning to the automatic warehouse again. It The supply time for supplying the parts boxes from the automated warehouse to the parts shelves on the production line is calculated, and the supply time is subtracted from the transportation time. The number of empty parts boxes that can be collected by the remaining transport time is calculated, and the number of boxes is collected from the parts shelf.

Therefore, it becomes possible to supply and recover the parts box within a preset transportation time, and it becomes possible to make the work amount constant. According to the third aspect of the present invention, the box number counting means counts the number of boxes that are output from the automatic warehouse. The box number storage means stores the standard number of supply boxes of the component boxes to be supplied to the component shelves of the production line and the standard number of collection boxes of the empty component boxes to be collected from the component shelves of the production line. The increase / decrease calculation means calculates whether the number of component boxes counted by the box number counting means is larger or smaller than the reference supply box number stored in the box number storage means. If the number of parts boxes delivered from the automated warehouse is greater than the standard supply box number, the recovery box number calculation means calculates the increased correction box number for the increased number of boxes and subtracts the increased correction box number from the standard recovery box number. Calculate the number of collection boxes. If the number of boxes supplied is less than the standard number of boxes supplied,
The number-of-recovery-boxes calculating means calculates the number of reduction correction boxes with respect to the number of standard supply boxes, and adds the number of reduction correction boxes to the number of standard collection boxes to calculate the number of collection boxes.

Therefore, when the number of parts boxes delivered from the automated warehouse increases or decreases with respect to the standard number of supply boxes, the standard number of recovery boxes is corrected based on the increase / decrease, and the number of component boxes is increased by the corrected standard number of recovery boxes. to recover. Therefore, it is possible to make the work amount for supplying and collecting the parts box constant.

According to the fourth aspect of the invention, the time setting storage means sets and stores the transportation time for starting the automatic warehouse, supplying and collecting the component boxes in the manufacturing line, and returning to the automatic warehouse again. To do. The supply / recovery time storage means stores the supply time required to supply one component box to the component shelf of the manufacturing line and the recovery time required to recover one component box from the component shelf. The number-of-boxes counting means counts the number of component boxes that are output from the automated warehouse. The time calculation means calculates the supply time based on the number of component boxes that have been delivered from the automated warehouse and the supply time required to supply one component box to the component shelf. Then, the time calculating means calculates the remaining carrying time by subtracting the supply time from the carrying time. The number-of-recovery-boxes calculating means calculates how many empty component boxes can be recovered based on the remaining transport time and the recovery time required to recover one empty component box.

Therefore, it becomes possible to supply and collect the component boxes within a preset transportation time. Therefore, it is possible to make the work amount for supplying and collecting the parts box constant.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment embodying the present invention will be described with reference to FIG.
A description will be given based on FIG. As shown in FIG. 1, a component shelf 3 for accommodating a component box 2 is arranged near each manufacturing line 1, and an operator 4 uses the components of the component box 2 accommodated in the component shelf 3. Manufacture products. The component shelf 3 is provided with first to third storage shelves and return shelves, like the conventional component shelf 33.

Further, an automatic warehouse 5 is provided in a part of the factory for temporarily storing the parts box 2 which cannot be supplied to the parts shelf 3. The parts box 2 unloaded from the automated warehouse 5 is transported by three tow trucks 7 which are towed by a tow vehicle 6 which is a transport means. And in this embodiment, two towing vehicles 6
Tow three tow trucks 7. or,
An empty parts box 2 that comes out of the parts shelf 3 of the production line 1 is conveyed by a towing truck 7 of a towing vehicle 6 and placed in a parts box storage area 8. At this time, the empty parts boxes 2 are sorted according to factories or types and placed.

A stacker crane 9 is provided in the automatic warehouse 5, and this stacker crane 9 is connected to a management control device 10 as box number counting means, increase / decrease calculation means, recovery box number calculation means and time calculation means. This management control device 1
0 controls the stacker crane 9 to take out the parts box 2 from the automatic warehouse 5 and put it out to the delivery stand 11. Moreover, the unmanned transfer vehicle 12 controlled by the management control device 10 receives the component box 2 delivered to the delivery table 11. Parts box 2 received by the unmanned transfer vehicle 12
Are transferred to the tow truck 7 by the management control device 10.

As shown in FIG. 2, a bar code reader 15 is connected to the management control device 10. The bar code reader 15 collects the kanban corresponding to the empty parts box 2 from the manufacturing line 1 every predetermined time and reads the bar code of the recovered kanban. Based on this bar code, the management control device 10 calculates how many kinds of parts boxes 2 have been used. The management control device 10 instructs the operator to supply the parts box 2 to the manufacturing line 1 by the number of boxes.

A data input device 17 as a time setting storage means is connected to the management control device 10. Supply time for supplying one component box 2 from the towing cart 7 to the component rack 3 by the data input device 17, return time for carrying one empty component box 2 from the component rack 3 to the towing cart 7, and one empty component. The sorting time and the like for sorting the boxes 2 and placing them in the parts box storage 8 are input. Further, the number of standard supply boxes and the number of standard recovery boxes are also input.
Then, each data input by the data input device 17 is stored in the memory 18 as a box number storage means, a time setting storage means, and a supply / recovery time storage means.

A printer 20 for instructing the number of collection boxes is connected to the management control device 10. The number-of-collected-boxes instruction printer 20 prints on the paper the number of boxes to be collected of the component box 2 calculated by the management control device 10. Then, before the worker starts to supply the parts box 2 to the production line 1, the operator picks up the paper printed by the recovery box number instruction printer 20 and receives an instruction for the number of boxes to be emptied. There is.

Here, the supply time required to supply one component box 2 to the component shelf 3 is 9 seconds, and the return time for carrying one empty component box 2 from the component shelf 3 to the tow truck 7 is 9 seconds. Parts box storage 8 while separating one parts box 2 from the tow truck 7
It is assumed that the sorting time for placing on the table is 9 seconds. Note that each of these times takes into consideration the traveling time of the towing vehicle 6. The standard supply box number is 30, and the standard recovery box number is 15.
When these data are input by the data input device 17, they are stored in the memory 18 of the management control device 10.

Then, the management control device 10 calculates as follows how many empty component boxes 2 should be collected based on the number of component boxes 2 actually delivered from the automatic warehouse 5. ing. That is, the management control device 10 obtains the type of parts used and the number of parts boxes 2 based on the Kanban data read by the bar code reader 15, and the parts boxes 2 of the parts are delivered from the automatic warehouse 5. , Instruct the operator how many parts boxes to supply. It is assumed that the number of boxes in the parts box 2 at this time is 40. The management control device 10 is configured to calculate how much the number of the component boxes 2 to be actually delivered has increased or decreased with respect to the reference number of supply boxes 30.

In this case, the number of component boxes 2 is larger than the standard number of supply boxes by 10 boxes. Since the processing of the empty component box 2 requires twice as much time (18 seconds) as the time of supplying the component box 2 to the component shelf 3 (9 seconds), the management control device 10 requires 10 seconds. The box is divided by 2 to calculate the increase correction coefficient (note that the fractions below the decimal point are truncated). In this case, 5 boxes are the increase correction coefficient. Then, the management control device 10 is configured to perform a calculation for subtracting the increase correction coefficient from the reference number of recovery boxes. In this case, since the standard number of collection boxes is 15 and the increase correction coefficient is 5, the number of parts boxes 2 to be collected is 10 boxes.
It becomes a box. The management control device 10 drives and controls the number-of-collection-boxes instruction printer 20 to print out the number of collected boxes.

On the contrary, the parts box 2 delivered from the automated warehouse 5
It is assumed that the number of boxes is 24 boxes. The management control device 10 is configured to calculate how much the number of the component boxes 2 to be actually delivered has increased or decreased with respect to the reference number of supply boxes 30. In this case, the number of parts boxes 2 is smaller by 6 than the reference number of supply boxes. Since it takes twice as much time to process an empty parts box 2 as to supply the parts box 2 to the parts shelf 3, the management control device 10 corrects the decrease by dividing 6 boxes by 2. It is designed to calculate the coefficient. In this case, 3 boxes are the reduction correction coefficient. Then, the management control device 10 performs an operation of adding the reduction correction coefficient to the reference number of recovery boxes. In this case, the number of standard collection boxes is 15, and the reduction correction coefficient is 3, so the number of parts boxes 2 to be collected is 1.
It will be 8 boxes. The management control device 10 drives and controls the number-of-collection-boxes instruction printer 20 to print out the number of collected boxes.

Next, the operation of the component box supply / collection system in the manufacturing line configured as described above will be described. First, at a predetermined time, the collection staff collects the kanban removed from the parts box 2 every time a new parts box 2 is used in the production line 1. Then, the barcode of the kanban is read by the barcode reader 15. The management control device 10 determines which part box 2 has been used and how many boxes have been used based on the bar code read by the bar code reader 15.

Then, the management control device 10 controls the stacker crane 9 to take out the used component boxes 2 from the automatic warehouse 5, and the operator takes out the used number of boxes as many as the used boxes and transfers them to the delivery table 11. Then, the management control device 10 controls the unmanned transfer vehicle 12 to receive the component box 2 transferred to the delivery table 11 and transfers it to the towing vehicle 7 of the towing vehicle 6.

On the other hand, the management control device 10 calculates how much the number of component boxes 2 transferred to the towing truck 7 at that time has increased or decreased from the reference number of supply boxes stored in the memory 18 in advance. At this time, the parts box 2 transferred to the towing truck 7
It is assumed that the number of boxes is 36 boxes. Then, the management control device 10 requests that the number of component boxes 2 has increased by six. The management control device 10 divides these 6 boxes by 2 and sets 3 boxes as the increment correction box number. The management control device 10 sets 12 as the number of parts boxes 2 to be recovered, which is obtained by subtracting 3 from the standard correction box number of 3 and the increase correction box number of 3. The number of collection boxes 12 is set to 10
Controls the number-of-collection-boxes instruction printer 20 to print out.

The operator receives the printed sheet and operates the towing vehicle 6 to pull the towing carriage 7. Then, all the component boxes 2 transferred to the tow truck 7 are supplied to the component shelves 3 of the manufacturing line 1, and only 12 empty component boxes 2 are collected.

Further, it is assumed that the number of the component boxes 2 transferred to the towing truck 7 is 20. Then, the management control device 10
Requests that the number of component boxes 2 has decreased by 10. The management control device 10 divides these 10 boxes by 2 and sets 5 boxes as the number of reduced correction boxes. The management control device 10 collects 20 boxes obtained by subtracting 5 reduction boxes from the standard 15 boxes.
The number of boxes. The management control device 10 prints out the number of collected boxes 20 by controlling the number of collected boxes instruction printer 20.

The operator receives the printed sheet and operates the towing vehicle 6 to pull the towing carriage 7. Then, all of the component boxes 2 transferred to the towing truck 7 are supplied to the component shelves 3 of the manufacturing line 1, and only 20 empty component boxes 2 are collected.

Therefore, even if the number of the component boxes 2 delivered from the automated warehouse 5 increases or decreases, the increase or decrease correction box number for the increase or decrease is obtained, and this increase or decrease correction box number and the standard recovery box number are obtained. The number of parts boxes 2 to be collected is calculated based on the above. As a result, even if the number of parts boxes 2 delivered from the automated warehouse 5 changes, the amount of work performed by the worker, that is, the supply of the parts box 2 to the parts shelf 3 and the transfer from the parts shelf 3 to the towing truck 7. Return,
It is possible to sort the parts box 2 and place the parts box 2 in the parts box storage area 8 so that the total work amount is always constant.

Further, even if the number of parts boxes 2 delivered from the automatic warehouse 5 is large, the number of parts boxes 2 to be collected is corrected to be small, so that the automatic warehouse 5 is departed and returns to the automatic warehouse 5 again. The time to come can be constant. As a result, the next towing vehicle 6 can always be started at a predetermined time, and the parts box 2 can be regularly supplied to the parts shelf 3. Moreover, since the component box 2 on the component shelf 3 is not lost, it is possible to reliably prevent the production line 1 from stopping.

Furthermore, the parts box 2 that is unloaded from the automated warehouse 5
Even if the number of boxes is small, the number of parts boxes 2 to be collected is corrected to be large, so that it is possible to make the time for leaving the automatic warehouse 5 and returning to the automatic warehouse 5 constant. As a result, it is possible to prevent the worker from returning when all the component boxes 2 are not transferred to the towing truck 7 of the towing vehicle 6 to be started next, so that the working efficiency of the worker is improved. be able to. In addition, since the operator at this time collects a large amount of empty component boxes 2, it is possible to prevent a large amount of empty component boxes 2 from accumulating on the component shelf 3.

Further, the number of recovery box number instructing printer 20 is used to instruct the number of parts boxes 2 to be recovered, and the operator recovers the empty parts box 2 based on the instruction. As a result,
The operator can easily determine how much empty part box 2 should be collected.

In this embodiment, the management control device 10 counts the number of the component boxes 2 delivered from the automated warehouse 5 based on the Kanban data. In addition to this, an operator may actually factor the number of the component boxes 2 to be delivered from the automated warehouse 5 and input them to the management control device 10 via the data input device 17.

Further, the parts box 2 transferred to the delivery table 11 by the unmanned transfer vehicle 12 is transferred to the towing vehicle 7, but the operator replaces the unmanned transfer person 12 and the parts box of the delivery table 11 is transferred. 2 may be transferred to the tow truck 7.

In this embodiment, the number-of-recovery-boxes instructing printer 20 is used to instruct the number of component boxes 2 to be recovered. In addition to this, it is also possible to provide a display on the towing vehicle 6 and display the number of the component boxes 2 to be collected on the display in response to a communication command from the management control device 10.

In this embodiment, the supply time, the return time, the sorting time, the standard number of supply boxes, the standard number of collection boxes, etc. are concretely shown, but the present invention is not limited to these numbers and can be changed arbitrarily. You may.

Further, since the sum of the return time of the empty component box 2 and the sorting time is doubled with respect to the supply time of the component box 2, the box increased or decreased with respect to the reference number of supply boxes. Divide the number by two. Therefore, if the time obtained by adding the return time of the empty parts box 2 and the sorting time to the supply time of the parts box 2 becomes 2.3 times, the number of boxes increased or decreased with respect to the reference number of boxes will be 2 Divide by 3. Similarly, if the sum of the return time of the empty parts box 2 and the sorting time is three times the supply time of the parts box 2, the number of boxes increased or decreased with respect to the reference number of supply boxes is set to 3. It suffices to find the number of increased or decreased correction boxes divided, and the coefficient for division may be changed as necessary.

In addition to this, the parts box 2 to be recovered as follows:
You may set the number of boxes. The towing vehicle 6 pulls the towing truck 7 to depart from the automated warehouse 11, supplies the parts box 2 to the parts shelf 3, collects the empty parts box 2, and further separates the empty parts box 2 to separate the parts box. The data input device 17 causes the memory 18 of the management control device 10 to store the transportation time until it returns to the automatic warehouse 11 after being placed in the storage space 8. Then, this time is set to, for example, 12 minutes. These 12 minutes are set based on the time when the parts box 2 to be supplied next to the towing vehicle 7 of the succeeding towing vehicle 6 is completely transferred while the leading towing vehicle 6 departs and returns. ing.

Then, it is assumed that the number of the component boxes 2 delivered from the automatic warehouse 11 is 50 boxes. Then, 50 parts box 2
The management control device 10 calculates the supply time for supplying the components to the parts shelf 3. In this case, since the supply time for supplying one component box 2 to the component shelf 3 is 9 seconds, the supply time for supplying all 50 boxes is 450 seconds (7 minutes 30 seconds). The management control device 10 subtracts 7 minutes 30 from the transportation time of 12 minutes. Then, it will be 6 minutes and 30 seconds. In 6 minutes and 30 seconds, the management control device 10 calculates how many empty component boxes 2 can be collected and placed in the component storage area 8. In this case, the return time is 9
Since the seconds and the sorting time are 9 seconds, the total time required to collect one component box 2 and place it in the sorting bin 8 is 18 seconds. Therefore, the management control device 10 divides 6 minutes 30 by 18 seconds to calculate the number of the component boxes 2 to be collected. in this case,
There are 15 empty parts boxes 2 that can be collected. The management control device 10 controls the collection box instructing printer 20 to print on the paper so as to collect 15 parts boxes 2 and output them.

In this case, the transport time when the towing vehicle 6 departs from the automatic warehouse 5 and returns again is set in advance, and the parts to be recovered are collected based on that time and the number of the component boxes 2 delivered from the automatic warehouse 5. The number of boxes in Box 2 is set. Therefore, even if the number of the component boxes 2 delivered from the automated warehouse 5 increases or decreases, it is possible to always supply and recover the component boxes 2 at the set time. As a result, the work amount of the worker can be made constant. Further, when the towing vehicle 6 returns to the automatic warehouse 5, the parts box 2 is transferred to the next towing vehicle 6 and is ready for departure. As a result, the work efficiency of the worker is improved. The transport time is 12 minutes, but this time can be changed as required.

Next, technical ideas other than the claims understood from the above embodiment will be described below together with their effects. (1) In Claim 3 or 4, there is provided an instructing means for instructing the number of recovery boxes obtained by the recovery box number calculation means.

According to this structure, the number of collection boxes obtained by the number-of-collection-boxes calculating means is instructed by the instructing means. As a result, the operator can easily determine how many empty parts boxes can be collected from the parts shelf. Moreover, the amount of work of supplying and collecting the component boxes performed by the worker can be made constant.

(2) In claims 2 and 4, the collection of an empty component box means that the component box is collected and sorted and placed in the component box storage space. According to this configuration, the time taken to collect and sort the empty component boxes and place the sorted component boxes in the component box storage area is taken into consideration. As a result, it is possible to supply and recover the component box during the more accurately set transportation time.

[0054]

As described in detail above, according to the first aspect of the invention, if the number of parts boxes actually delivered is greater than the number of standard supply boxes, the standard number of recovery boxes is corrected. Reduce the number of parts and collect as many as the number of parts boxes. If the number of parts boxes actually delivered is smaller than the number of standard supply boxes, the standard number of collection boxes is corrected and increased, and the number of parts boxes is collected. As a result, even if the number of delivered component boxes increases or decreases, the number of component boxes to be collected can be adjusted according to the increase or decrease, so that the work load of the worker can be made constant.

According to the second aspect of the present invention, the supply time required to supply all the actually delivered parts boxes to the parts shelf is determined, and the supply time is subtracted from the transfer time to determine the remaining transfer time. It calculates how many empty parts boxes can be collected in the remaining transportation time, and collects the number of boxes. As a result, the amount of work of the worker can be made constant even when the number of the component boxes to be delivered changes, and the carrying time can be stabilized.

According to the third aspect of the present invention, when the number of parts boxes delivered from the automated warehouse has increased or decreased with respect to the standard supply box number, the standard recovery box number is corrected based on the increase / decrease, and the correction is performed. Collect as many parts boxes as the standard number of collection boxes. As a result, the amount of work for supplying and collecting the parts box can be made constant.

According to the fourth aspect of the present invention, even if the number of the delivered component boxes changes, the component boxes can be supplied and collected within a preset transportation time. Moreover, it is possible to make the work amount for supplying and collecting the parts box constant.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a parts box supply and recovery system according to the present invention.

FIG. 2 is an electric block diagram showing an electric system for supplying and collecting a parts box.

FIG. 3 is a schematic configuration diagram showing a conventional parts box supply and recovery system.

FIG. 4 is an explanatory view showing a component shelf provided near the manufacturing line.

[Explanation of Codes] 1 ... Production line, 2 ... Parts box, 3 ... Parts shelf, 5 ... Automatic warehouse, 6 ... Trucking vehicle as transportation means, 7 ... Trucking truck as transportation means, 10 ... Box number counting means, Management control device as increase / decrease calculation means, collection box number calculation means and time calculation means,
17: Data input device as time setting storage means, 18
... Memory as box number storage means, time setting storage means, and supply / recovery time storage means

Claims (4)

[Claims] 1. A worker transports a parts box to be discharged from an automated warehouse at a predetermined time by a transporting means, supplies the parts box to a parts shelf of a production line, and empty parts on the parts shelf. In the method of supplying and collecting parts boxes on a production line that collects boxes, if the number of parts boxes that are delivered from the automated warehouse and supplied to the parts shelves on the manufacturing line is greater than the predetermined standard supply boxes, the parts shelf Collect the number of boxes after subtracting the number of boxes that have been corrected from the standard number of collected boxes to increase the number of boxes to be supplied, and collect the number of boxes from the automated warehouse. If the number of supplied component boxes is less than the predetermined standard number of supply boxes, the number of supplied component boxes will decrease relative to the standard number of recovery boxes for collecting empty component boxes on the parts shelf. Collect the number of boxes after adding the number of correction boxes Supply and recovery method of parts box in the production line, which was to so that. 2. An operator transports a component box delivered from an automated warehouse at predetermined time intervals by a transport means, supplies the component box to a component shelf of a production line, and empty components on the component shelf. In the parts box supply and collection method in the production line that collects boxes, the transportation means starts from the automatic warehouse, supplies and collects the parts box, and sets the transportation time to return to the automatic warehouse again.
Find the supply time to supply the parts boxes from the automated warehouse to the parts shelves on the manufacturing line, subtract from the transfer time, and find the number of empty parts boxes that can be collected by the remaining transfer time. A method of supplying and collecting parts boxes in a manufacturing line that collects as many parts as possible from the parts shelf. 3. A box number counting means for counting the number of parts boxes supplied to the parts shelf of the production line, a standard number of supply boxes supplied to the parts shelf of the production line, and an empty parts box from the parts shelf of the production line. The number of boxes for storing the number of standard collection boxes for collecting the number of boxes, and the number of boxes to be supplied to the parts shelf obtained by the number of boxes counting means from the number of standard supply boxes stored in the number of boxes storage means. Based on the calculation result from the increase / decrease calculation means and the increase / decrease calculation means, when the number of boxes supplied by the component box is larger than the reference number of supply boxes, the increase correction box number with respect to the increase box number is calculated, and the standard recovery Calculate the number of boxes to be recovered by subtracting the number of boxes to be increased from the number of boxes to be supplied, and if the number of boxes to be supplied is less than the number of boxes to be supplied, calculate the number of boxes to be decreased to the number of boxes to be supplied, and make a correction to decrease to the standard boxes Calculate the number of collection boxes by adding the number of boxes A system for supplying and collecting parts boxes in a production line, which includes a means for calculating the number of collection boxes. 4. A time setting storage means for setting and storing a transportation time when the transportation means departs from the automatic warehouse, supplies and collects the parts boxes in the manufacturing line, and returns to the automatic warehouse again. Supply collection time storage means for storing a supply time required to supply one part box to the part shelf and a collection time required to collect one part box from the part shelf, and a part supplied to the part shelf of the production line Supplying time to supply the parts box to the parts shelf based on the box number counting means for counting the number of boxes and the number of boxes in the parts box output from the automatic warehouse and the supply time stored in the supply / collection time storage means. For calculating the remaining transport time by subtracting the supply time from the transport time, and the remaining transport time calculated by the time computing means and the recovery time for recovering one empty parts box. Parts box supply recovery system in the production line that includes a collection box number calculating means for calculating a box number of empty component box that can be recovered based on the.