JPH04114828A - Weighing/box packing device in fruit selection facility - Google Patents

Abstract

PURPOSE:To make it possible to box-pack by a specified weight and ship out fruit, etc., divided in classes by equipping a post shaped frame body which rockably supports a supporting frame and forms a contact part at the lower end part, a parallel link which exists between a fixed frame and the frame body and makes the frame body move vertically, and a scale which receives weight only by the contact part. CONSTITUTION:Fruit divided in classes from a selection conveyor 4 reach a weighing box packing section 19 through a drawer conveyor, etc. At this weighing box-packing section 19, a supporting frame 21 which is supported by a post-shaped frame body 22 or an empty box B which is held by this supporting frame 21 tilt-moves to approach a feeding shoot 25, and is ascend-held, and the fruit, etc., from the drawer conveyor are drop-fed in the box B in order. The weight of these fruit and the supporting frame 21, etc., is received by a scale 20 at the lower end side contact part 22a through the post-shaped frame body 22. Also, since this post-shaped frame body 22 can vertically move in parallel by a parallel link 24, the weight added in the vertical direction is accurately and assuredly transmitted to the scale 20 side through the said contact part 22a. Also, when the fruit, etc., are let out to a carry-out conveyor side by descending the supporting frame 21 after weighing, an excessive force is not added to the scale 20 itself, since it is fixed-point-supported with the parallel link 24.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a weighing and packaging device in a fruit sorting facility.

[Prior Art and Problems to be Solved by the Invention] The classified fruits etc. from the sorting conveyor are delivered to the weighing and boxing section via the drawer conveyor, packed to a predetermined weight, and then taken out. The conventional weighing section 'M' is as shown in Figure 8.
A support frame 21 on which an empty box can be placed and tilted (M)+, a columnar frame 22 on which the support frame 21 is mounted on a swinging opening, a tilting cylinder 28, etc. are integrally provided, and are used as a platform scale or a load cell. When the cardboard box B, which is fixed to the scale 20 and has been weighed for a predetermined amount of i, is sent out, it causes mechanical problems such as the link mechanism of the platform FP20 falling off or the hook part coming off.

[Means to solve the problem]

The present invention attempts to solve the above-mentioned drawbacks, and includes a support frame 21 that supports the empty box B to receive and accommodate the classified fruits from the sorting conveyor 4 and raises it to approach the classified fruit supply chute 25, and this support frame. A columnar frame 22 that swingably supports the frame 21 and forms a contact portion 21a at its lower end, a parallel link 24 that is located between the fixed frame and this frame 22 and moves the frame 22 up and down in parallel, and This is an example of a weighing and packaging device in a fruit sorting facility that includes a scale that receives a load only at the portion 21a.

[Operation and effect of the invention]

The classified fruits from the sorting conveyor 4 reach the weighing and boxing section 19 via a pull-out conveyor or the like. In this weighing and packaging section 19, a support frame 21 supported by a columnar frame 22 is used.
The empty MB held in the box B is tilted to approach the supply chute 25 and held upward, and the fruits etc. from the drawer conveyor are sequentially supplied and dropped into the box B. These fruits, support frame 2
The first load is received by the scale 20 through the columnar frame 22 at its lower end side contact portion 22a, and since the columnar frame 22 is configured to be able to move up and down in parallel with the parallel link 24, it can move up and down in the vertical direction. The above-mentioned load applied to the contact portion 22a is accurately and reliably transmitted to the scale 20 side. Furthermore, after weighing, the support frame 21 is lowered and delivered to the delivery conveyor side, but during this delivery movement, unreasonable force is not applied to the scale 20 itself because it is supported by the parallel link 22 and a fixed point. This will eliminate the deficiencies of the government-registered conventional system.

〔Example〕 An embodiment of this invention will be described based on the drawings.

The figure shows a facility for sorting potatoes as the material to be sorted.
In FIG. 4, 1 is a receiving section, 2 is a grading section by a grade evaluator, 3 is an alignment supply section, and 4 is a sorting conveyor.

A shape detector 6 such as a COD camera is provided at the starting end of the sorting conveyor 4, and drawer transfer conveyors 7, 7, etc. as a classification and discharge section are provided from the middle of the conveyor 4 to the discharge section. are doing.

The drawer transfer conveyor 7 includes a first belt conveyor 8 that receives and transfers all the sorted objects to be classified and discharged, and second belt conveyors 9a and 9b configured to have left and right widths to sort and transfer them. It consists of The pull-out belt conveyors 9a and 9b are each driven by separate drive motors (not shown), and one belt conveyor 9a is configured to be driven and stopped during the sorting operation as described later. be.

On the transfer end side of the above-mentioned pull-out belt conveyors 9a, 9b, there is a dispensing belt conveyor 10a and a dispensing belt conveyor 10a in order to change direction and transfer in a direction substantially perpendicular to these belt conveyors 9a, 9b. , 10b are provided. These are composed of endless belts 12a and 12b in the form of flat belts with lugs 11 formed 1 m below the middle, front and rear pulleys 13a, 13b, 14a, 14b, and an M motor 15.
Drive pulleys 17a, L7b and tension pulley 1 interlockingly connected to output pulleys 16a, 16b of a to 15b
8a and 18b, the transfer surface of the dispensing belt conveyor 10a is lower than the transfer surface of the pull-out belt conveyors 9a and 9b, and the transfer surface of the large dispensing belt conveyor 10b is lower than the transfer surface of the dispensing belt conveyor 10b. conveyor 10
It is set slightly lower than the transfer surface of a.

Further, the transfer speed of the small-dispense belt conveyor 10a is set to a slower speed than that of the large-dispense belt conveyor 10b, and the two are configured so that the transfer amount per unit time is different even though they are within the same range. There is.

Reference numeral 19 denotes a weighing section provided at the terminal end of the belt conveyors 10a, 10b, which includes a platform scale 20, a support frame 21 for supporting empty boxes, and a support frame 21 that is swingable around an upper fulcrum P. It consists of a columnar frame 22 that supports and forms a contact portion 22a at the lower end, and a parallel link 24 that is located between the fixed frame 23 and this frame 22 and drives the frame 22 upward in parallel.

A guide chute 25 is provided at the end of each of the belt conveyors 10a, 10b, so that when an empty box with an upright flap rises, it can be seen into the space inside the box.

The contact portion 22a is in contact with the upper surface of the platform scale 20, and the support frame 1. The load of the columnar frame 22 is intensively applied to the platform scale 20. The contact portions 22a may be configured at several points.

Reference numeral 26 denotes an air cylinder mechanism that can change the height of the empty box mounting surface of the support frame 21 up and down.
The second arm portion 21b, which is connected to the second arm portion 21b, is configured to be expandable and contractible like a double cylinder shaft.

It is connected between these.

Further, 28 is an air cylinder mechanism for rotating the support frame 21 around the supporting point P (support shaft 27).

Reference numeral 29 denotes a box delivery conveyor, which sequentially transfers empty boxes and is operated by the push-out arm 30 in response to a weighing signal for filling a specified amount (for example, 15 ktc) into a box from the weighing and packing section 19. The boxes filled with a specified amount of objects to be sorted are sent to the carry-out conveyor 31 side by the pushing action of the empty boxes. 32. 32 is a turning roller, and 33 is a product conveyor.

34 is a controller which receives the detection information from the shape detector 6 and compares and determines which class the detected object belongs to among the preset classes, and when it moves to a predetermined class, it controls the operating mechanism of the classification section. This controller 28 sends a classification command signal and also receives a weighing signal from the weighing and packaging section 19, and sends a minute amount switching signal to switch the minute amount supply at a filling weight slightly less than the specified packing weight. It is configured to output the output and bring the pull-out belt conveyor 9a and the Obata belt conveyor 10b into a stopped state.

It should be noted that when a preset specified weight is reached, all but the first pull-out belt conveyor 8, the other belt conveyors 9a, 9b, 10a, and fob are controlled to be temporarily stopped. In addition, in response to this specified vehicle quantity signal, the boxes of the L-shaped box support frame 21 of the weighing and box packing section 19 are controlled to be fed out in cooperation with the next empty box.

The action of the upper side will be explained.

The received potatoes are visually inspected by a grade evaluator in the grade sorting section 2 and sorted into excellent and excellent grades. While maintaining this separated state, the next-stage alignment and supply unit 3 aligns them in a single line.

The potatoes described above are supplied to the sorting conveyor 4.

The shape of the outer diameter is detected by the shape detector 6 on the starting end side. The detection signal detected for each potato is input to the controller 34, which calculates to which classification and discharge section the operation signal should be output, and operates the discharge mechanism from the sorting conveyor 4.

Potatoes from the sorting conveyor 4 are received and transferred to the first pull-out belt conveyor 8, and approximately the same amount is transferred to the left and right second belt conveyors 9a, 9b. Weighing boxing section 19
A predetermined weight (
For example, 14-. 5 kg) of potatoes are not input, both of the foreign drive motors that separately drive these belt conveyors 9a and 9b continue to receive drive signals, and both belt conveyors 9a and 9b do not load potatoes. Transfer vines.

Until the predetermined weight is reached, the drive motor 15a
and 15b are both in the driving state, and both the small-dispensing belt conveyor 10a and the large-dispensing belt conveyor 10b are also driven. Unfortunately, the second drawer belt conveyor 9
All of the potatoes supplied from the ends of lines a and 9b are to be transferred once they reach the top of the small delivery belt conveyor 10a, and the excess potatoes cross the conveyor 10a and are transferred to the large delivery belt conveyor 10b which is located at a slightly lower position. will be transferred. Which conveyor 10a, 1
The potatoes placed on the surface 0b are also affected by the transfer action, and are eventually fed into the waiting box via the guide chute 25.

Weighing No. 42 from the weighing and packaging section 19 is carried out by the controller 3 at any time.
4, and when this measured value outputs a predetermined value of 14.5 kg, the belt conveyor 9a of the second drawer conveyor and the large-output belt conveyor 10
b is stopped, and the supply of potatoes into the box is switched to a small amount supply state. That is, since only the belt conveyor 9b of the second pull-out belt conveyor is driven, the number of potatoes to be pulled out is reduced by half, and the supply into the box is performed by supplying from the dispensing belt conveyor 10a, which has a slow transfer speed. Therefore, it becomes possible to supply individual potatoes, and the weight is gradually driven, reducing variations in the specified weight of 15 kg. Incidentally, the excess material that has reached the large-sized delivery belt conveyor 10b at a lower position beyond the surface of the small-dispensing belt conveyor 10a waits on the surface of the belt conveyor 10b.

When the above specified weight of 15 kg is reached, the box support frame 21 of the weighing and boxing section 19 returns to its original position, and the box filled with potatoes to the specified amount is pushed by the empty box that is delivered by the action of the pushing arm 30. and transferred onto the carry-out conveyor 31. The next empty box is placed on the box support frame 21 and stands by in an inclined position.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and FIG. 1 is a front view of the main parts;
Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is an overall plan view, Fig. 5 is an enlarged front view of a portion thereof, Fig. 6 is an enlarged side sectional view, Fig. 7 (I). ) and (b) are a plan view and a side view showing an overview of the operation of the drawer conveyor, and FIG. 8 is a front view showing a conventional example. In the figure, 1 is a cargo receiving section, 2 is a grade sorting section, 3 is an alignment supply section,
4 is a sorting conveyor, 6 is a shape detector, 7 is a drawer transfer conveyor, 19 is a weighing and packaging section, 20 is a platform scale, 21 is a support frame,
22 is a frame body, 23 is a fixed frame, 24 is a parallel link, 25 is a supply chute, 26 is an air cylinder mechanism, 27 is a support shaft,
28 is a tilting cylinder, 29 is a box distribution conveyor, 31 is a discharge conveyor, 33 is a product conveyor, and 34 is a controller. Figure 1 2 o- Shi-1 ■ Figure 7 (Lori Figure 8

Claims (1)

[Claims] (1) A support frame 21 that supports the empty box B to receive and accommodate the classified fruits from the sorting conveyor 4 and raises it to approach the classified fruit supply chute 25, and this support frame 21 is swingably supported. The lower end includes a columnar frame 22 forming a contact portion 21a, and a frame 22 located between the fixed frame and this frame 22.
a parallel link 24 that moves up and down in parallel, and the contact portion 21
A weighing and packaging device in a fruit sorting facility consisting of a scale that receives a load only at point (a).