JPS6115995Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a weight sorting device that measures the weight of fruits and other products and ranks them according to weight. Conventionally, perishable products such as fruits were placed in a container equipped with a scale. Since the weights are loaded one by one and ranked while moving, this type of sorting device requires a large number of weighing mechanisms and has the disadvantage of slow weighing speed.

The present invention eliminates the above-mentioned drawbacks, completely separates the container from the conveyance system, enables high-speed and high-precision weight measurement and ranking of fruits and other products, and also makes it possible to remove the container from the conveyance system. An object of the present invention is to provide a weight sorting device that allows easy maintenance and cleaning of containers.

Next, an embodiment of the weight sorting device according to the present invention will be described with reference to the drawings. Figure 1 shows the overall schematic configuration of the weight sorting device according to this invention.
A conveyor sprocket 1, two conveyor chains 2 arranged in parallel on both left and right sides of the conveyor body, a large number of guide rollers 3 attached at equal intervals in the direction of movement of the conveyor chains 2, and a number of guide rollers 3 that engage with the conveyor chains 2. A plurality of containers 4 having the same weight that move cyclically at predetermined intervals, semicircular protrusions 5a and 5b provided on the front and rear sides of the containers 4, installed below the conveyance chain 2, Weighing platform 6a
A weighing mechanism 6 consisting of a weighing section 6b and a weighing section 6b, a sorting section 7 whose details will be described later, two rails 8 arranged in parallel along the conveyance chain 2, and a continuously variable transmission 17 driven by a motor (not shown). , a drive chain 18, a drive sprocket 19, etc. In the figure, reference numeral 30 indicates an intermittent feeding section for feeding the products one by one to this weight sorting device. The above-mentioned continuously variable transmission 17 is a drive chain 18
The drive sprocket 19 is rotated by. The conveying sprocket 1 is fixed to both ends of a shaft to which a driving sprocket 19 is attached, that is, to the left and right sides of the conveyor body, and rotates in the same manner as the driving sprocket 19, driving the two left and right conveying chains 2. The conveyor chain 2 has guide rollers 3 provided at predetermined intervals and protrudes inward thereof, and moves on rails 8 provided on both left and right sides of the conveyor body. At this time, the guide roller 3 is mounted on the front projection 5a provided on the side surface of the container 4 so as to ride on the rail 8.
conveys the container by engaging and pushing it forward. The positional relationship among these containers 4, guide rollers 3, rails 8, etc. is shown in FIG. FIG. 2 is a view along the line -' in FIG. 1, showing only one side.

FIGS. 3a, 3b, and 3c show the structure of the intermittent feeding section 30, and the details thereof will be explained below. V-belt 3
3 is driven by a motor 31 with a clutch brake equipped with a pulley 32, which turns a pulley 34 to turn a flat belt 35. Guide plates 36 are provided on both upper sides of the flat belt 35 with a width that corresponds to an example of the product, and holes 37 are provided at the rear stage. A light projector 38 and a light receiver 39 are provided facing each other through the hole 37, and are controlled by a control circuit to perform an intermittent feeding operation, so that the products are fed into the container 4 one by one. The flat belt 35 is provided with a large number of fins 40, as shown in FIG. 3c, to prevent the product from rolling in the direction of movement of the flat belt 35.

FIG. 4 shows the configuration of the sorting section 7, which includes a rotatable first gate 11 and a second gate 12.
A guide rail 13 is provided below the section between the first and second gates 11 and 12. The first gate 11 is normally on the same plane as the rail 8, but when the rotary solenoid 14 is energized, its tip becomes on the same plane as the guide rail 13, and the rear protrusion 5b of the container 4 is placed on the same plane as the guide rail 13.
Lead to 3. And the above rotary solenoid 1
4 returns to its original position by the force of the return spring 15 when the bias is released, and as a result, the first gate 1
1 returns to the same plane as rail 8. Furthermore, when the rear protrusion 5b of the container 4 moves along the guide rail 13, the container 4 tilts and the products placed thereon fall into the chute 16. The guide rail 13 is flush with the rail 8 at its terminal end. Since the second gate 12 is rotatable, the rear protrusion 5b of the container 4 pushes up the second gate 12 and returns to the rail 8 of the container 4. Thereafter, the second gate 12 returns to the same plane as the rail 8 due to its own weight. The fallen products are collected through the chute 16.

Further, the weighing mechanism 6 is provided inside the conveyor main body at a position where the bottom of the container 4 rests on the conveyor belt, the details of which are shown in FIG. The weighing section 6b transfers the weight from the weighing table 6a to a differential transformer (not shown).
The signal is converted into an electrical signal and supplied to a display device as shown in FIG. The weighing platform 6a has two pulleys 24, front and rear, which are rotated by a drive belt 23 driven by a motor 22 equipped with pulleys.
and a conveyor belt 25 rotated by a pulley 24, these two belts 23 and 24 run on both the left and right sides of the container 4 at a faster speed than the conveyor chain 2. . The rail 8 in the section of the conveyor belt 25 has a portion corresponding to the protrusion of the container 4 removed so that the container 4 can be placed on the belts 23, 25 and its weight can be measured.
Therefore, when the containers 4 are transported on the belts 23 and 25, they are isolated from the transport chain 2, and their weights are measured independently.

The weight thus measured is displayed on a display device. This display device receives the output signal of the differential transformer of the weighing section 6b to display weight and other information, and its appearance is shown in FIG. 6. Weight display section 3
0 amplifies the output signal of the differential transformer and converts it into a digital value to display the weight of the product.The rank setting section 28 is a digital switch that sets the classification weight of each weight rank. The rank display section 2 displays the category in which the weight of the item falls by lighting up a lamp corresponding to the weight rank.
It is 9.

The weight rank signal is sent to the shift register for storing the sorting rank, and the bucket detector calls out the signal stored in the shift register, and operates the sorting section so that the product is sorted into the sorting section of a predetermined rank. Output a signal. Note that this display device has a zero set function, and the zero point of the scale can be adjusted at any time with a single touch, thereby reducing weighing errors.

As described above, according to this invention, since the container is weighed while being transported, the weighing speed can be increased, and the container can be weighed while being separated from the transport chain.
Weighing is carried out using a stand-based weighing machine, which improves weighing accuracy, and because the container can be easily removed from the conveyance system, it is convenient for maintenance and cleaning of the container. It is possible to provide a weight sorting device that can achieve various excellent effects such as increasing the sorting speed because the weight is weighed and sorted while being loaded and transported.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic diagram of a weight sorting device according to an embodiment of this invention, and Fig. 2 is the same as Fig. 1.
Fig. 3a and b are side and front views showing the configuration of the intermittent feeding device according to the same embodiment, Fig. 3c is a view showing the configuration of the flat belt of the intermittent feeding device, and Fig. 4 5 is a block diagram showing details of a sorting section according to the same embodiment, FIG. 5 is a diagram showing details of a weighing mechanism according to the same embodiment, and FIG. 6 is a diagram showing details of a display device according to the same embodiment. 2... Conveyance chain, 3... Guide roller, 4
...Container, 5...Protrusion, 6...Weighing mechanism, 7...
Sorting department.

Claims (1)

[Scope of utility model registration request] A running endless chain or belt with guide bodies provided at predetermined intervals, and an engaged part that is removably engaged with the guide bodies of the chain or belt and moves cyclically at predetermined intervals. A plurality of containers of the same weight, a means for placing a predetermined number of products in the containers, a weighing platform installed below the chain or belt, and the product is conveyed by being engaged with a guide body of the chain or belt. When the container is placed on the weighing table, the container is moved at a speed faster than the speed of the chain or belt, and the engaged portion of the container is separated from the guide body so that it can be weighed. A single weighing device comprising a weighing conveying means for producing a product, and a weighing unit that measures the weight of each container containing the product placed on the weighing stand, converts it into an electric signal, and outputs the same. a mechanism, a plurality of sorting mechanisms provided with a guideline below the movement line of the chain or belt that conveys the weighed containers, and a gate provided on the input side of the guideline, and receiving the weighing signal, When the weighed container reaches a desired sorting mechanism, the gate is operated to transport the product on the chain or belt so that the rear side of the container follows the guideline, and the product inside the container is dropped. A weight sorting device characterized by comprising a dropping means.