JPH05105237A - Case piling and unpiling apparatus - Google Patents

Abstract

PURPOSE:To provide a case piling and unpiling apparatus adapted to pile and unpile cases by one elevating driving source. CONSTITUTION:Two transfer-loading tables for placing piled cases are provided on the upper and lower sides, and a pair of elevating tables 7a and another pair of elevating tables 7b are provided on both sides of the transfer-loading tables. A connecting mechanism for elevating four elevating tables 7a, 7b in a body is connected to four elevating tables 7a, 7b, so that the elevating tables 7a, 7b are adapted to elevate in a body by the operation of one elevating driving source. Lever mechanisms are disposed along the transfer-loading tables and on both sides of the elevating tables 7a, 7b. Each of the lever mechanisms includes a lever 13e capable of projecting above a moving path of the case, and the lever 13e is adapted to lift up the case. Thus, a work for unpiling the piled cases and a work for piling empty cases can be performed by one elevating driving portion, so that an apparatus of this type can be formed in a compact size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when supplying a component on a predetermined work line, supplies the component by storing it in a case that is stacked in a plurality of stages until just before the component supply position. Allows the stacked cases to be separated from the bottom one by one and supplies the cases one by one, and it is possible to supply the parts in each case, and the cases where the parts are taken out laterally or below the position where the cases are separated. The present invention relates to a case stacking / separating device configured to sequentially stack one by one.

[0002]

2. Description of the Related Art Conventionally, in order to smoothly supply parts on an assembly line and perform assembly work without waiting time, a plurality of cases containing a large number of parts are stacked and supplied near a predetermined part supply position. A method is used in which the cases stacked at this position are individually separated and delivered to a component supply position so that the components in the case can be taken out smoothly. In this method, when separating the stacked cases one by one, a case destacking device having a lever that leaves the case at the bottom and lifts the other cases is used.
When the stored parts are discharged from the case taken out one by one, they are sent to the next work station, stacked one after another by the stacking device arranged at that station, and discharged in batches. Is configured.

[0003]

Therefore, it is necessary to provide a case separating device for separating the plurality of cases from each other and a case stacking device for stacking the cases, which not only increases the size of the device but also reduces the cost of the device. There are drawbacks such as ups and downs.

The present invention is intended to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a case stacking and disassembling apparatus that enables stacking and disassembling operations of cases with a single lifting drive source. Is.

[0005]

[Means for Solving the Problems] Two transfer stands for placing a plurality of stacked cases are arranged. Elevating tables having levers projecting freely toward the moving path side of the case are arranged on both sides of one of the transfer tables so that they can be moved up and down. Further, an elevation drive source is connected to these elevators, and the elevators are configured to be able to be raised and lowered by their operation.

On the other hand, another elevating table, which is located on both sides of the other transfer table and has a lever that can project toward the moving path of the case, is provided so as to be able to move up and down so as to face each other. Are connected to each other by a connecting mechanism, and are configured such that all the lifts are lifted up and down integrally by the operation of the lift drive source.

[0007]

In the case stacking / separating device, when a plurality of cases stacked in multiple stages on the conveyor device are supplied to the transfer table and the cases are stopped at a predetermined position of the transfer table, the lifting / lowering drive is performed. The power source is activated to raise the elevators located on both sides of the transfer platform with the lever retracted, and stop at the side of the second stage case. From this state, the lever projects from both sides of the case to the case side, and then the lifting platform is raised by the operation of the lifting drive source. Therefore, the lever can contact the case of the second stage and lift the case located above the second stage, and only the case of the first stage on the transfer table is
It is ejected from the transfer table and supplied to a predetermined component supply position. After that, the lifting drive source descends to the original position, the case of the second stage is returned to the transfer table together with the case above it, and at the same time, the lever is retracted from the movement path of the case. During this time,
The lift table located on the side of the other transfer table also moves up and down together with the lift table, but since the lever does not project on the movement path of the case, the case mounted on the other transfer table has no effect. Do not receive

On the other hand, when all the components are discharged from the case discharged to the component supply position and this case is transferred to the front of the other transfer table, the lifting table side located on both sides of the other transfer table. The levers, which are held by, project from both sides of the case toward the case. In this state, the raising / lowering drive source operates to raise the raising / lowering platform, and the lever accordingly rises. 1 which was held on the transfer table by the rise of this lever
The case above the stage is lifted, and a space for accommodating a new case is secured below the first stage. afterwards,
When a new case is supplied below the lifted case and stopped, the lifting drive source moves back and the lifting platform descends to an intermediate position. At the same time, the case lifted by the lever is placed on the bottom case, and the cases are sequentially stacked. After that, the lever is retracted from above the moving path of the case so as to be separated from the case, and further the raising / lowering drive source is moved back to the lowermost position to prepare for the next case.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a case stacking / separating device, in which conveyor devices 3 for horizontally moving a plurality of stacked cases 2 in opposite directions are provided in upper and lower two stages. Transfer stands 4 and 4 having drive rollers 4a are disposed on the respective extensions of one side of the conveyor device 3. On both sides of the upper and lower transfer tables 4 and 4, there are provided a first elevating unit 5 which forms a pair and a second elevating unit 6 which forms a pair below the first elevating unit 5. The second elevating units 5 and 6 are fixed so as to be positioned vertically corresponding to the transfer tables 4 and 4.

The first and second elevating units 5 and 6 have machine frames 5a and 6a whose transfer tables 4 and 4 are open, and linear rails 5b and 6b which stand upright on the machine frames 5a and 6a. Is 2
The sliders 5c, 5c, which are mounted on the rows and slide on the linear rails 5b mounted on the two first lifting units 5, 5 facing each other on the upper side, have the first lifting platform 7 respectively.
a and 7a are fixed. This first lifting platform 7a, 7a
Bearing nuts 8a are fixed to the bearing nuts 8a, respectively, and a screw shaft 8b located between the two linear rails 5b, 5b parallel to the linear nuts 5b is screwed into the bearing nuts 8a so as to be rotatable at that position. ing. Further, a rotary drive source 9 for transmitting rotation to the screw shaft 8b is fixed to one machine frame 5a of the first elevator unit 5, and the rotary drive source 9 is vertically driven together with a belt transmission mechanism 10 described later. The two screw shafts 8b, 8b of the first elevating unit 5 are configured to rotate integrally with each other. The lifting drive source is configured to have at least three stop positions according to the type of the case 2, and the stop positions are selected according to the case stacking and the case dismounting. There is. Further, a pulley 10a is fixed to the lower end of the screw shaft 8b, and a belt 10b is wound around these pulleys 10a to form a belt transmission mechanism 10, which constitutes a part of a lifting drive source. The two screw shafts 8b facing each other by the rotation of the rotary drive source 9,
8b is configured to rotate integrally.

The sliders 6c, 6c on the linear rails 6b, 6b mounted on the second lifting units 6, 6 facing each other on both sides of the lower transfer table 4 have the second lifting table 7b, 7b is fixed, and the second lift 7
A connecting rod 11 as an example of a connecting mechanism is connected to the first and second lifts 7a and 7a at b and 7b, and the first and second lifts 7a and 7a located at the respective sides of the transfer table 4 are connected. 7b and the other first and second lifts 7a and 7b are connected so as to move up and down integrally.

A support plate 12 extending along the side surface of the transfer table 4 is horizontally fixed to each of the first and second elevating tables 7a and 7b (hereinafter, the first elevating table 7a will be described). At both ends of the support plate 12, mounting plates 13a forming a part of a lever mechanism 13 having the same structure are mounted upright. The mounting plate 13a has a lever base 13b extending in the horizontal direction.
A pinion shaft 13c extending in an upright direction is rotatably held on b, and a pinion gear 13d and a lever 13e located below the pinion gear 13 and protruding above the transfer table 4 are fixed to the pinion shaft 13c. ing. The lever base 13b is provided with a roller 13f extending in the horizontal direction at a predetermined distance from the pinion gear 13d, and a rack 13g reciprocating in the horizontal direction so as to be sandwiched between the roller 13f and the pinion gear 13d. Are arranged. This rack 13g is reciprocated by a small cylinder 13h fixed to the first lifting table 7a side of the support plate 12 via a cylinder table 13i, and the reciprocating movement rotates the pinion gear 13d to fix it to the pinion shaft 13c. It is configured to rotate the lever 13e.

An elevator system 1 having an elevator pedestal (not shown) on the side of the case stacking and disassembling system 1.
4 is arranged, and the case 2 discharged from the case stacking and unstacking device 1 is received by an elevator pedestal (not shown) at a position on the ascending side, and parts inside the case 2 (not shown)
After being discharged, the case 2 is transferred to the lowermost position, and the drive roller (not shown) provided on the elevator base mounts the case 2 on the transfer base 4 below the case stacking and dismounting device 1. Is configured to deliver.

In the case stacking / separating device,
A plurality of cases 2 stacked in multiple stages are sent from the upper conveyor device 3 to the upper transfer table 4. After that, the raising / lowering drive source is activated, the first and second raising / lowering stages 7a and 7b are integrally raised, and the lever mechanism 13 is positioned at the side portion of the case 2 in the second stage and stopped. At the same time, the small cylinder 13h of the lever mechanism 13 on the side of the first lifting unit 5 is actuated, and the rack 13
g moves forward, and the pinion gear 13d and the pinion shaft 13
By rotating c, the lever 13e projects below the engaging recesses on both sides of the second-stage case 2. At this time, the small cylinder 13h on the second lifting unit 6 side does not operate.

After that, as shown in FIG. 3, the raising and lowering drive source is further operated to raise the first and second raising and lowering stages 7a and 7b to the uppermost position, and the lever 13e is moved to the second stage case 2 from both sides thereof. Engage and lift the case 2 above it. In this state, when the drive roller 4a of the transfer table 4 is driven, only the case 2 of the first stage is sent to the elevator table. When the case 2 is sent out from the transfer table 4, the lifting drive source is moved back and the first and second lifting tables 7a and 7b are lowered to the lowest position. Therefore, Case 2 was located in the second stage
Is placed on the transfer table 4 as the case 2 of the first stage, and the lever 13e is disengaged from the engaging recess of the case 2 and stopped. Then, the small cylinder 13h moves back, the rack 13g moves backward, the pinion gear 13d and the pinion shaft 13c move backward, and the lever 13e moves backward from the transfer table 4.

The case 2 arranged on the elevator table of the elevator device 14 stops at that position until all the parts in the case 2 are discharged, and when all the parts have been discharged, the elevator table descends and the case 2 moves to the lowermost position and is located on the side of the lower transfer table 4. When the case 2 is located on the side of the lower transfer table 4, this is detected by a sensor (not shown), and the small cylinder 13h on the second lifting unit 6 side is activated by this detection signal. for that reason,
The rack 13g moves forward, the pinion gear 13d and the pinion shaft 13c rotate together with the lever 13e, and the lever 1
3e is located below the engaging recess of the case 2 located on the lower transfer table 4. At this time, the small cylinder 13h on the first lifting unit 5 side does not operate. In this state, the raising / lowering drive source operates and the first and second raising / lowering stands 7a, 7b rise. Therefore, as shown in FIG. 4, the lever 13e on the second elevating unit 6 side engages with the case 2 from both sides thereof, and the case 2
Lift and stop in place. Meanwhile, a drive roller (not shown) provided on the elevator base is driven, and the case 2 is sent to the lower transfer base 4 side.

When the case 2 reaches the lower transfer table 4 and stops, the lifting drive source slightly returns and the lever 1
The case 2 lifted by 3e is placed above the newly fed case 2. After that, the small cylinder 13h of the second elevating unit 6 returns, the pinion gear 13d and the pinion shaft 13c pivotally return together with the lever 13e, and the lever 13e retracts from the lower transfer table 4. At the same time, the lifting drive source moves back to lower the first and second lifting units 5 and 6 to the lowest position.

After that, when a predetermined number of cases 2 on the lower transfer table 4 are placed, a sensor (not shown) detects this and the drive roller 4a of the transfer table 4 is driven, and a predetermined number is set. The individual cases 2 are delivered onto the lower conveyor device (not shown),
It is possible to prepare for stacking a new case 2.

In the embodiment, the elevating drive source is configured to convert the rotation of the rotary drive source into an elevating operation by using the screw shaft and the bearing nut screwed with the screw shaft. It may be replaced with a mechanism. Also,
Although the lifting drive source is mounted on the first lifting unit side, it may be mounted on the second lifting unit side. Further, although the transfer bases are arranged at the upper and lower positions in the embodiment, they may be arranged in parallel on the same surface, and the transfer bases may be belt conveyors. Further, the connecting mechanism may be a connecting plate that connects the two elevators located on the respective sides of the transfer table.

[0020]

As described above, according to the present invention, the lifts are arranged on both sides of the two transfer stands, and the lifts are connected by the connecting mechanism, and the lifts are combined into one. It is configured to move up and down integrally by a lifting drive source, and a lever mechanism that moves up and down integrally with each lifting table is arranged along the transfer table and on both sides of the lifting table, and the lever mechanism moves the case. Since a lever that can project is provided on the road, it is possible to perform the work of disassembling the stacked cases and the work of stacking the empty cases with one lifting drive source, and this type of device is compact. It can be constructed at low cost. Further, according to the present invention, since the case stacking work and the stacking work can be performed even in the vertical position, the space occupied by the device is reduced, and the space in the factory can be effectively used.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 2 is a plan view of an essential part of the present invention.

FIG. 3 is an enlarged cross-sectional view of a main part of the first lifting unit of FIG.

FIG. 4 is an enlarged cross-sectional view of a main part of the second lifting unit of FIG.

[Explanation of symbols]

 1 Case Stacking and Unloading Device 2 Case 3 Conveyor Device 4 Transfer Stage 4a Drive Roller 5 First Elevating Unit 5a Machine Frame 5b Linear Rail 5c Slider 6 Second Elevating Unit 6a Machine Frame 6b Linear Rail 6c Slider 7a First Elevating Table 7b 2nd lift 8a Bearing nut 8b Screw shaft 9 Rotational drive source 10 Belt transmission mechanism 10a Pulley 10b Belt 11 Connecting rod 12 Support plate 13 Lever mechanism 13a Mounting plate 13b Lever base 13c Pinion shaft 13d Pinion gear 13e Lever 13f Roller 13g Rack 13h Small cylinder 13i Cylinder stand 14 Elevator device

Claims (4)

[Claims] 1. An elevating and lowering apparatus, in which two transfer stands for mounting a plurality of stacked cases are arranged, and which are located on both sides of one of the transfer stands and which are capable of projecting toward a movement path side of the case. Place the stands facing each other so that they can be raised and lowered, and at least 3
While connecting the lifting drive source having the stop position of the step, another lifting stand, which is located on both sides of the other transfer stand and has a lever that can project toward the moving path of the case, is provided so as to be able to move up and down. A case characterized in that a connecting mechanism for moving them integrally is connected to the elevating tables located on both sides of each of the transfer tables, and the elevating tables are integrally elevated by the operation of the elevating drive source. Stacking and destacking device. 2. The case stacking / separating device according to claim 1, wherein the two transfer stands are arranged one above the other. 3. The case stacking / separating device according to claim 1, wherein the two transfer stands are arranged in parallel on the same surface. 4. The case stacking and destacking device according to claim 1, wherein the connecting mechanism is a mounting plate that integrally fixes two lifting tables located on each side of the transfer table.