JPH066109Y2 - Stacking transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is an improvement of a stacking transfer device that receives an object to be transferred from a conveyor in a front stage and supplies the transferred object in a state in which it is stacked in a transfer system in a subsequent stage. It is about.

[Prior Art] An example of this type of stacking transfer device is shown in FIG.

In FIG. 8, the stock conveyor 40 further stores the pallets 41 flowing from the preceding conveyor 1. 42 is a transfer machine, and the pallet 4 on the conveyor 40
1 is supplied to the pallet loading / unloading device 43.
The pallet loading and unloading device 43 is a dolly (transport system in the latter stage)
The pallet 41 is sequentially dropped on the stack 44 to be stacked (stacked).

[Problems to be Solved by the Invention] In the above-mentioned stacking transfer apparatus, a stock conveyor 40 for temporarily storing the pallets 41 is provided in order to deal with the uneven flow of the pallets 41, and the system flow is reduced. Is smooth. Therefore, there is a problem that the stacking transfer device is inevitably enlarged in size by the space of the conveyor 40 and the installation area of the device is increased.
For example, while hindering automation of existing factories,
The number of stacked pallets is limited by the height of the transfer machine 42, and there is a drawback that a large number of stacked pallets cannot be obtained.

The present invention has been made in order to improve the above-mentioned conventional problems, and provides a stacking transfer device capable of stacking an unlimited number of stacks while reducing the installation area by achieving planar miniaturization. Has an aim.

[Means for Solving the Problems] In order to achieve the above object, the present invention comprises a stock conveyor and a lifting device.

The stock conveyor has a carrying unit bridged between a pair of endless chains, this carrying unit is provided only in a part of the circumferential direction of the chain, and this carrying unit is the preceding conveyor. The stock position which is downstream in the flow direction and the retract position which is on the conveyor side of the preceding stage from this stock position and below the stock position. It moves and receives the object to be conveyed from the preceding conveyor.

The elevating device has a gripping claw that stands by above the stock position, lifts the transported object upward and stacks it on the transported part that flows next, and lifts the stacked laminate upward. The transfer unit transfers the stacked material to the transfer system at the subsequent stage located directly below the stock position by passing between the pair of chains in the retracted position.

[Operation] According to the present invention, the conveyor is provided only in a part of the chain in the circumferential direction, and the conveyor is released to the retracted position to transfer the laminate to the subsequent conveyor system directly below the stock position. The position and the stacking position are two-dimensionally overlapped.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a stacking and transferring apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a conveyor at a preceding stage, which is an object to be conveyed such as an empty pallet after parts or materials are supplied to a production line. 2 is conveyed. Reference numeral 3 denotes a stacking and transferring apparatus for the transported object 2 provided adjacent to the final end of the conveyor 1.
As shown in the perspective view of the lifting device 5 in FIG. 2, a lifting device 5 having a plurality of gripping claws 4, 4 provided facing each other, and a pair of the lifting device 5 as shown in the perspective view of the stock conveyor 8 in FIG. It is configured by a stock conveyor 8 which is provided only in a part of the chains 6 and 6 in the circumferential direction and includes a plurality of transport units 7 such as rollers.

Next, the stock conveyor 8 will be described.

In FIG. 1 and FIG. 3, reference numerals 70 and 70 denote a pair of guides that are provided on the outer peripheral surface of each roller of the transport unit 7 and project in a flange shape at a predetermined interval. As shown in FIG. 5, 28 is a connecting shaft for connecting the spherical plain bearings 29 attached to both ends of each roller 7 and the chains 6, 6 with each other, 23,
Reference numeral 23 denotes a pair of chain guides, and both chain guides 23 are engaged with rollers 25 provided at the connecting portions of the chains 6 and 6 as shown in the enlarged sectional view of FIG. 5 and the enlarged perspective view of FIG. Pressing rails 26, 26 are formed so as to apply a pressing force to each roller. Reference numeral 27 is a pair of rails, both rails 27 are integrally supported with the chain guide 23, and between these rails 27, 27, the stock position of the transported object 2 transported from the conveyor 1 in the preceding stage. P2 and P3 (see FIGS. 7 (a) and 7 (b)) are formed.

On the rails 27, 27, the transport section 7 of the stock conveyor 8, that is, the roller 7 rolls to receive the load of each roller 7 and the transported object 2 placed thereon, and The roller 7 is brought into contact with the rails 27, 27 to impart a rotational force for carrying the carried object 2 placed thereon. Therefore, the pressing rail 26 presses against the rollers 25 provided at the connecting portions of the chains 6 and 6 connecting the rollers 7 to each other as described above so that the rollers 7 are always in contact with the rails 27 and 27. Power is given.

Reference numeral 31 in FIG. 3 is a moving device for moving the stock conveyor 8, which is composed of an electric motor (not shown) for reciprocating the pair of chains 6, 6 and a plurality of driven sprocket wheels 35. Stock positions P2 and P3 shown in FIGS. 7 (b) and (c), which are downstream in the flow direction of the conveyor 1, and FIG. 7 (a), which is a position below the stock position on the upstream conveyor 1 side. The roller 7 is selectively stopped at the retracted position P1 shown. The roller 7 moves from the retracted position P1 to the stock positions P2 and P3, and receives the transported object 2 from the conveyor 1. Reference numeral 36 denotes a stopper, which comes into contact with the tip of the transported object 2 and stops it at a predetermined position.

It should be noted that in the stock conveyor of the transported object of the above-described embodiment, a large number of sensors are arranged in each part in order to automatically perform the operation of collecting the transported object.

Next, the lifting device 5 will be described in detail.

In FIG. 1, reference numeral 9 is a base, 10 is a conveying system in a subsequent stage such as a handcart, and 12 and 12 in FIG. 2 are a pair of ball screws each having a male screw and a female screw (nut) screwed with each other. The male screw that becomes the support of the device 5 is the base 9 described above.
Is rotatably attached to the free end of the opening side. 1
Reference numerals 4 and 14 are fixed to the nuts 13 and 13 to move up and down, and a pair of lifting frames 4, 4 are the lifting frames 14 and
A plurality of gripping claws that are fixed to swinging shafts 15, 15 that are rotatably supported by 14 and swing. A ball motor 12, 17 is a motor through a plurality of sprocket wheels 18 and chains 19 and the like. This is to rotate the male screw. Reference numeral 22 is a cylinder device, which is used for the lifting frames 14 and 1
4 is provided for gripping or releasing the transported object 2 by rotating the grip claws 4, 4 through a predetermined angle via the rotary shafts 15, 15.

A pressure-sensitive conductive rubber 4a is provided on the upper surface of the grip claw 4 to confirm the loading of the transported object 2.

Next, the operation of the above configuration will be described with reference to FIG.

First, in FIG. 7 (a), the transported object 2 is detected by a sensor (not shown) when transported to the final end of the conveyor 1 of the production line. With this detection, as the chain 6 of the stock conveyor 8 is driven and the rollers of the transfer section 7 move, the transfer section 7 rotates due to the frictional force between the lower surface of the transfer section 7 and the rail 27 in FIG. The object 2 is moved at a speed faster than the stopper 36. Therefore, the transported object 2 remains in contact with the stopper 36, as shown in FIG.
It is conveyed to the position shown in (b), that is, the first stock position P2 of the stock conveyor 8. When the succeeding transported object 2 flows, the chain is driven, and the succeeding transported object 2 comes into contact with the leading transported object 2 by the action of the rollers.

As a result, the two front and rear objects 2 are aligned, and FIG. 7 (c)
The stock conveyor 8 stops at the position indicated by (2), that is, at the second stock position P3 of the stock conveyor 8.

Next, in FIG. 7 (d), the transported object 2 is lifted by the gripping claws 4 of the lifting device 5, and the bottom surface of the lifted transported object 2 is subsequently transferred from the conveyor 1. A space G is formed so that the transported material can enter therein.

After the above lifting, the stock conveyor 8 is again moved to the retracted position P.
After retreating to 1, the next two objects to be conveyed 2 before and after are shown in Fig. 7 (e).
Is conveyed to the stock positions P2 and P3.

After this conveyance, the grip claw 4 (see FIG. 7 (d)) descends downward, and the upper stage conveyed object 2 lifted upward as shown in FIG. 7 (f), the lower stage conveyed object. Stacked on top of two.

After this stacking, the stacked two upper and lower conveyed objects 2 are shown in FIG.
As shown in (g), the object 2 is lifted up and this operation is repeated to stack the conveyed objects 2 in several stages as shown in FIG. 7 (h). After the above-mentioned stacking, the plurality of stages of the transported object 2 being lifted are shown in Fig. 7 (i).
As described above, it is transferred to the transport system 10 in the subsequent stage, that is, the handcart just below the stock positions P2 and P3.

It should be noted that the objects 2 to be lifted by the gripping claws 4 of the lifting device 5 are not always stacked in a plurality of layers vertically as shown in FIG. It is also possible to transfer to. Further, in the above-mentioned one embodiment, the empty pallet after supplying the parts or materials etc. by the conveyor to the production line as the transferred object is described, but the same effect can be obtained even if the pallet contains the parts or materials. It goes without saying that it will be done.

[Effects of the Invention] As described above, according to the present invention, the stock position of the transported object on the stock conveyor and the transfer position of the laminate in which the transported objects are stacked are two-dimensionally overlapped. As a result, the stacking / transferring device is downsized in plan view so that the installation area of the device is reduced, and the stacking and stacking can be performed in an unlimited upward direction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a stacking / transferring device for conveyed objects according to the present invention, FIG. 2 is a perspective view of a lifting arm device, FIG. 3 is a perspective view of a stock conveyor, and FIG. 4 is IV of FIG. -IV is an enlarged sectional view taken along line IV, FIG. 5 is an enlarged sectional view taken along line V-V in FIG. 1, FIG. 6 is a perspective view of a chain guide and rollers, and FIG. FIG. 8 is a perspective view showing a conventional example, which is a process diagram of the transfer operation. 1 ... Conveyor, 2 ... Conveyed object, 4 ... Gripping claw, 5 ...
... Lifting device, 6 ... Chain, 7 ... Conveying section, 8 ... Stock conveyor, P1 ... Retracted position, P2, P3 ... Stock position.

Claims (1)

[Scope of utility model registration request] 1. A stacking / transferring device for receiving an object to be conveyed from a conveyor at a front stage and supplying the object to be conveyed in a state of being laminated to a conveying system at a latter stage, which is provided between a pair of endless chains. The stock position is a downstream portion in the flow direction of the preceding conveyor, and a position below the stock position on the preceding conveyor side. A stock conveyor that selectively stops the transport unit at the retreat position, moves the transport unit from the retreat position to the stock position to receive the transported object from the conveyor, and waits above the stock position. It has a gripping claw that lifts the transported object above the height of the next transported object, stacks this transported object on the next transported object, and lifts this stacked laminate upward, Layered transfer device having a lifting device in a state of being moved to the retracted position through between the pair of chains are transferred to a subsequent stage of the transport system to wait for the laminate below the stock position.