JPH07115756B2 - Product loading device for heavy box trays - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for loading products such as machine parts on trays stacked in a box shape.

[0002]

2. Description of the Related Art As a device of this type, a tray transfer conveyor extending through a supply station, a destack device arranged at the beginning of a tray transfer path, and a stack arranged at the end of a tray transfer path. It is known that the trays provided with a device are sequentially conveyed one by one by a conveyor, and the trays supplied with products during the conveyance are stacked by the stacking device. ing.

[0003]

In the above apparatus, since the destacked products are conveyed by the conveyor one by one until they are stacked, there is a problem that the convey path of the conveyor becomes long.

An object of the present invention relates to a device for loading products on a heavy box tray which solves the above problems.

[0005]

A device for loading products on a heavy box tray according to the present invention comprises a tray transfer conveyor extending through a supply station, and a destack disposed on the tray transfer path upstream of the supply station. The apparatus includes a device and a stacking device arranged on the tray transport path downstream of the supply station.

[0006]

According to the present invention, there is provided a device for loading products on a heavy box tray, which comprises a tray transfer conveyor extending through a supply station, a destack device arranged on the tray transfer path upstream of the supply station, and a supply station. Since the tray is provided with a stacking device disposed on the downstream side of the tray transfer path, the tray is destacked and sticked while being transferred by the conveyor.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, “before and after” means “before and after”
With reference to FIG. 1, the right side of FIG. 1 is referred to as the front, and the opposite side is referred to as the rear, and the left and right are the left and right sides toward the front.

The product loading device is composed of a frontwardly extending carry-in conveyor 11 and a rearwardly-carrying-out conveyer 12, which are vertically arranged, a destack device 13 arranged along the front of the carry-in route, and a carry-out route. A stack device 14 arranged along the front part, a supply device 15 arranged in front of the carry-in route, a drop lifter 16 arranged from the front end of the carry-in route to the front end of the carry-out route, and a carry-in conveyor.
11, a carry-out conveyor 12, a main frame 17 supporting the de-stacking device 13 and the stacking device 14 so as to be integrated with each other, and a supply device 15 and a drop lifter 16 that are integrally provided in the front part of the main frame 17 And a sub-frame 18 supported integrally.

The carry-in conveyor 11 and the carry-out conveyor 12 are
Both consist of driven wheel conveyors. At the middle and front end of the carry-in path, first and second stoppers 21 and 22 are provided which can be operated and deactivated in the carry-in path. At the middle and the rear end of the carry-out path, the third and fourth stoppers 23, which can be switched between operating and non-operating, appear and disappear in the carry-out path.
24 are provided.

Destack device 13 and stack device 14
Have the same structure. Below, destack device 13
Describes the destacking device 14 of the stacking device 14
The same parts as those in FIG.

The destack device 13 is composed of left and right elevating units 25 having the same structure, which are different from the left and right directions disposed on the left and right sides of the carry-in path.

Referring to FIG. 3, the left unit 25 includes a vertical strip-shaped opposed support plate 31, an upper drive shaft 32 and a lower driven shaft 33 which are horizontally arranged on the support plate 31 with a space vertically provided therebetween. A pair of drive sprockets 34 mounted on the shaft 32 at intervals, and a pair of driven sprockets 35 mounted on the driven shaft 33 so as to correspond to the drive sprockets 34,
The drive sprocket 34 and the driven sprocket 35 are on the same side on the left and right, and a pair of endless chains 36 wound around the same side, and a horizontal rotation rod 38 passed through the chain 36 via an attachment 37 A pair of holding claws 39 that are fixed to the rod 38 at a distance and are undulated via a rotating shaft 38, and a pair of holding claws 39 are fixed to a support plate 31 via a cross member 41 so that the back surfaces of both holding claws 39 come into contact with each other. And a pair of vertical guide rails 42 for holding the holding claws 39 upright. The rear end of the drive shaft 32 penetrates the support plate 31 and is projected rearward, and the output shaft of the motor 43 is connected to the protruding end.

In FIG. 3, the state in which the holding claw 39 is erected is shown by a solid line. In this state, the holding claw 39 is in contact with the guide rail 42. From this standing state, as shown by the chain line in FIG. 3, it is possible for the holding claw 39 to fall to the upper side, but even if the holding claw 39 tries to fall to the lower side from the standing state, this is a guide. Blocked by rail 42.

The supply device 15 includes a transfer arm 52 that moves along a horizontal support rail 51 extending in the front-rear direction on the top of the sub-frame 18, and a piston rod of a supply cylinder 53 that is provided vertically downward in the middle of the arm 52. The product holding member 54 attached to the. A positioning cylinder 55 is arranged vertically downward near the rear end of the support rail 51, and a vertical rod-shaped positioning pin 56 is attached to its piston rod.

The drop lifter 16 includes an elevating arm 62 which is moved along a vertical guide post 61 provided on the left side of the sub-frame 18, and a carry-in conveyor 11 and an unloading arm when the elevating arm 62 is located at an upper limit and a lower limit. A transfer conveyor 63 mounted on an elevating arm 62 so as to be connected to the conveyor 12 respectively, and a lift cylinder 64 vertically upward provided at the bottom of the subframe 18 so as to be located on the left of the guide post 61. , A moving pulley 65 attached to the piston rod of the lift cylinder 64, and a guide post 61.
A fixed pulley 66 that is placed near the upper end of the sling, and a sling line that is sequentially wound around the moving pulley 65 and the constant pulley 66 and has one end fixed to the elevating arm 62 and the other end fixed to the top of the subframe 18. Consists of 67. The transfer conveyor 63 is also a driven wheel conveyor.

Next, a product loading operation on the tray C will be described. When a plurality of empty trays C stacked with the first stopper 21 in the operating state are placed on the rear part of the carry-in conveyor 11,
The loaded tray C is conveyed forward by the carry-in conveyor until it comes into contact with the one stopper 21. Next, the second stopper
When 22 is activated and the first stopper 21 is deactivated, the tray C is conveyed by the carry-in conveyor until the tray C comes into contact with the second stopper 22, whereby the tray C is carried into the destack device 13. At this time, the holding claw 39 is
There are 36 outside travel paths waiting. The chain 36 is driven to cause the holding claw 39 to pass over the drive sprocket 34, and then the chain inner movement path is lowered. At this time, the holding claws 39 sequentially come into contact with the tray C, and climb up and over the tray C one by one while repeating ups and downs. Then, when the holding claw 39 crosses over the second lowest tray C,
The chain 36 is stopped / reversely rotated, and the holding claw 39 is raised. Then, the holding claw 39 is engaged with the second tray C, and the upper tray C is lifted from the lowest tray C.

Next, when the elevating arm 62 is positioned at the upper limit, the second stopper 22 is set to the inoperative position, and the transfer conveyor 63 is driven forward, only the lowest tray C is conveyed forward, Tray C on transfer conveyor 63
Can be placed. In this state, the product is supplied to the tray C by the supply device 15. During this time, the transfer conveyor 63 is not driven.

When the destacked tray C is transferred to the transfer conveyor 63, the second stopper 22 is activated and the holding claw 39 is lowered, so that the tray 39 held by the holding claw 39 is again conveyed. Claw placed on 11 and held as it is
When 39 is moved, the holding claw 39 dives under the driven sprocket 35 and then rises along the chain outer movement path to prepare for the next destack operation.

When a predetermined number of products are supplied to the tray C,
The elevating arm 62 is lowered. When the elevating arm 62 descends to the lower limit, the third stopper 23 is activated, and when the transfer conveyor 63 is driven backward, the tray C is placed on the third stopper 23.
The tray C is conveyed rearward until it comes into contact with the tray C, whereby the tray C is unloaded from the transfer conveyor 63 and stopped in the stacking device 14.

When the tray C is carried out from the transfer conveyor 63, the elevating arm 62 is raised. Then, the tray C to be supplied next is carried onto the transfer conveyor 63.

When the tray C is loaded into the stacking device 14, the holding claws 39 of the stacking device 14 are lowered in the same manner as described above, and the tray C existing there is passed over. When the holding claws get over the tray, the holding claws 39 are stopped and lifted to lift the tray C. Tray C is another tray C below
When the tray is lifted to a height where it can enter, the tray is kept waiting there.

When the product is supplied to the succeeding tray C, the tray C to which the product is supplied is lowered in the same manner as described above and is carried into the stacking device 14. And tray C
When the holding claw 39 holding the is lowered, the tray C lifted by the holding claw 39 is superposed on the tray C carried in below. The holding claw 39 to be lowered continues to descend even after it has passed over the tray C carried in below and is raised below the driven sprocket 35 to prepare for the next stacking work.

In the illustrated embodiment, the stacking operation is complete when the two trays C of product supply have been polymerized.
Of course, three or more trays may be stacked.

When the stacking work is completed, the fourth stopper
When 24 is activated and the third stopper 23 is deactivated, the stacked trays C are conveyed backward by the carry-out conveyor 12 and stopped by abutting against the fourth stopper 24, whereby the stacking work is completed. .

[0025]

According to the present invention, since the trays are destacked and sticked while being conveyed by the conveyor, as compared with the case where the trays are destacked and sticked at the start end and the end of the convey path of the conveyor. The length of the conveyor can be shortened, and the device can be made compact.

[Brief description of drawings]

FIG. 1 is a vertical longitudinal sectional view of a loading device according to the present invention.

2 is a cross-sectional view of the same device taken along the line II-II in FIG.

FIG. 3 is a perspective view showing a part of a destack device of the device.

FIG. 4 is a front view of the same device.

[Explanation of symbols]

 11 Carry-in conveyor 12 Carry-out conveyor 13 Destack device 14 Dick device 63 Transfer conveyor

Claims (1)

[Claims] 1. A tray transfer conveyor 11, 12, 63 extending through a supply station, a destacking device 13 disposed on the tray transfer path upstream of the supply station, and a tray transfer path downstream of the supply station. A stacking device 14 disposed on the way, and a product loading device for a heavy box tray including the stacking device 14.