JPS6164613A - Horizontal return device in pallet conveyor - Google Patents

Abstract

PURPOSE:To improve horizontal balance in time of pallet returning, by installing a guide roller guide plate, having a semicircular return groove, in a way of interlocking with a sprocket wheel in the front of this wheel at an endless chain return end, and constituting it so as to hold a pallet front end in between and support it horizontally. CONSTITUTION:A pallet 1 advanced to a return part by endless chains 4 and 4 is supported by pins 2 and 2 when guide rollers 6 and 6 at both sides comes off a rail 16 and passes through each position of sprocket wheels 9 and 9, while these guide rollers 6 and 6 at both side in the rear is held between the rail 16 and a keep roller 17. With this, the pallet 1 goes forward in keeping its stable horizontality intact, and pallet front both sides are engaged with each fitting groove 12 of guide roller guide plates 13 and 13, and at the rear both sides, the guide roller 6 comes off the rail 16, and is supported horizontally by the endless chain 4 via the guide roller guide plate 13 and the pin 2, then returned as it is. With this constitution, horizontality of a return pallet is stabilizable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for holding a pallet horizontally and returning it without inverting it in a conveying device such as a pallet conveyor.

2. Description of the Related Art Conventionally, in a two-point support type pallet conveyor, the pallet is returned while being supported by endless chains on both sides at central positions on both sides or at diagonally opposite positions on both sides.

Problems to be Solved by the Invention However, in the two-point support type pallet conveyor, the condition is that the weight of the pallet itself is balanced, and unless an object is placed so that the pallet is balanced, the pallet will tilt. There was a drawback that objects could easily fall from the V or the pallet could easily come into contact with other mechanical parts.

Means to solve the problem In order to solve this problem, -1\'Taming takes into consideration the balance of the pallet itself, the arrangement of objects, etc., and creates a smooth and stable state without attracting attention. The present invention provides a horizontal return mechanism that can perform horizontal return.

Hereinafter, the present invention will be explained in detail with reference to embodiment figures.

As shown in Figs. 1 and 2, a bin 2.2 is provided protruding from the central position on both sides of the pallet 10, and a pin/2.2 is inserted into the endless chains 4, 4 arranged inside the channels 3.3 on both sides. Guide rollers 6.6 are attached loosely to support the pallet, and guide rollers 6.6 are provided with bins 5.
At the same time, a guide roller 6 is appropriately suspended in the bin 2 at the center position on both sides, and bearings 7a, 7a are provided in the channels 3, 3 at the return part of the endless chain 4.4 on both sides, and the shafts 8a, 8a are The shafts 8a, 8a have chain wheels 9, 9 at their inner ends, and interlocking chain wheels 10a at their outer ends.

10a, hook the chain wheels 9, 9 with the endless chain 4.4, and rotate the chain wheels 9, 9 at a distance equal to the distance between the bin 2 for supporting the pallet 1 and the guide roller 6 in front of the shafts 8a, 8a. Bearings 7b, 7b are provided in the channels 3, 3, and shafts 8b, 8b are mounted on the shafts, and interlocking chain wheels 10b, 1 are attached to the outer ends of the shafts 8b, 8b.
0b is tightened and the interlocking chain wheels 10'a, 1 of the shafts 8a, 8a are tightened.
0a and: (Endless Che/ll, tune 11, axis 8b,
A guide roller guide plate 13.13, which has semicircular fitting grooves 12 on its circumferential surface that fit with the rollers 6.6 on both sides of the front of the pallet 1, is fixed to the inner end of the guide roller 8b. Information board 1
3. In front of 13, there is a fitting groove 1 of the guide roller guide plate 13.
A fixed guide plate 15.1 provided with an arc-shaped return groove 14 that comes into contact with the outer surface of the guide roller of the pallet fitted to the fixed guide plate 15.1.
5 is installed on the inner surface of the channel 3.3, and an endless chain 4,
Rail 1 on which each guide roller of pallet 1 rides from the inner surface of the channel at a position below the upper moving part and lower moving part of 4.
6.16 is provided in a protruding manner, and a presser rail 17 is provided above the rail 16 of the upper moving part in the return part. In addition, in the fixed side plate 15, an embodiment can be considered in which the return roller 18 is arranged in an arc shape instead of the return groove 14 and is brought into contact with the outer surface of the guide roller of the pallet.

action, effect Next, the effects of the present invention will be explained with reference to embodiment figures.

When the endless chain 4.4 in the channel 3.3 is rotated as shown by the arrow, the pallet 1, which is supported on both sides by bins 2.2 on the upper moving part of the endless chain, advances to the return part at one end. ,
Guide rollers 6.6 on both sides of the front of pallet 1 are rails 1.
When leaving Pallet 6 and passing the chain wheel 9°9 position, Pallet 1
is supported by the bin 2.2, and the guide rollers 6.6 on both rear sides are sandwiched between the rail 16 and the presser rail 17, and the pallet 1 is supported by the zero chain wheel 9, which moves with stable four-point support. Guide o-ra guide plate 1 located in front of 9
3.13 are interlocking chain wheels 10a and 10b.

It is rotated by the endless chain 11 in the same direction and at the same speed as the chain wheel 9.9, and when the support point of the pallet 1 by the bin 2.2 reaches above the center of the chain wheels 9, 9, the front of the pallet 1 is rotated. When the guide rollers 6 and 6 on both sides 1 of the pallet rotate and engage with the fitting grooves 12 of the guide roller guide plates 13 and 13, and the endless chains 4 and 4 further rotate, the guide rollers 6 and 6 on both sides of the pallet 1 rotate. The rollers 6.6 are separated from the rails 16, and the pallet 1 is descended in parallel and returned horizontally by the endless chains 4, 4 via the guide roller guide plate 13.13 and the bins 2.2, and the bins 2.2 are chained together. When the cars 9, 9 reach the center below, the front and rear guide rollers 6, 6 on both sides of the pallet 1 ride on the lower rail 16, and move backward in the opposite direction without reversing. The guide roller 6.6 engaged with the fitting groove 12 of the guide roller guide plate 13.13 has its outer surface fixed and regulated by the return groove 14 of the guide plate 15. The pallet 1 returns in a stable state with four points supported. There is no need to consider the load balance on the upper surface of the balent 1.Also, by rotating the endless chains 4, 4 in the opposite direction, a rising horizontal litter can be achieved.

In the embodiment, there are 15 fixed guide plates and 1 return groove.
[Return roller instead of 4] 85 - Arranged in an arc shape, the upper surface of pallet 1... - 1/s. It is capable of stable and smooth horizontal descending return and horizontal ascending return while being guided by an endless checker, and by arranging the horizontal return mechanism left and right oppositely, it is possible to achieve a conopact conveyor line of the desired length. be.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a horizontal return mechanism according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is an enlarged sectional view taken along line A-A in FIG. B-line sectional view, FIG. 5 is the same <C-C line sectional view, FIG. 6 is the same <D-D scarlet sectional view, FIG. 7 is an enlarged sectional view of the horizontal return mechanism of the embodiment example, and FIG. 8 is a sectional view taken along the line E-E. 1 pallet, 2 pins, 3 channels, 4 endless chains/, 6
Guide roller, 9 chain wheels, 10 interlocking chain wheels, 12 fitting grooves,
13 Guide roller guide plate, 14 return groove, 15 fixed guide plate, 16 rail, 17 presser ring, 18 return roller

Claims (1)

[Claims] 1. Guide rollers are pivotally supported at front and back positions on both sides of the pallet,
In a pallet conveying device that transports each pallet while supporting the intermediate position of the front and rear guide rollers on both sides by endless chains facing each other and guiding the guide rollers with guide rails, the front of the chain wheel at one end where the endless chain returns A guide roller guide plate that interlocks with the chain wheel is arranged at the same distance as the distance between the support point of the pallet to the endless chain and the guide roller, and a semicircular return groove is provided in front of the guide roller guide plate. A horizontal return device for a pallet conveying device, characterized by having a fixed guide plate installed therein. 2. A horizontal return device in a pallet conveying device according to claim 1, characterized in that a return roller is arranged in an arc shape on a fixed guide plate facing the front part of the guide roller guide plate.