JPH1114439A - Dispersive supplying device for combined balance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dispersive supplying device which can maintain a high performance and high accuracy by performing small-variation dispersive supply through simple adjustment when a combined balance weighs such a packed object that the apparent specific gravity of the object is as small as 0.01 and the weight of each pack varies over a wide range from 0.6 g to 5 g. SOLUTION: A dispersive supplying device is constituted in such a way that a disperser 9 which is integrally rotates an agitator 10 and a bridge breaker 11 in the normal and reverse directions is provided at the center of a dispersive feeder 8 and a level sensor 15 which detects the thickness of a layer on the feeder 8 and controls a supply feeder 6 so that the thickness of the layer may become a fixed value or smaller is attached to the attaching frame of a motor 1 for the agitator 10 so that the disperser 9 and sensor 15 may be adjusted integrally and the variation of dispersive supply may be eliminated by moving the motor frame 2 in the vertical direction. In addition, a rake 17 is provided on a straight feeder 24 so as to prevent oversupply and a funnel 13 is provided on the dispersive feeder 8 so as to cope with insufficient supply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article supply apparatus for supplying articles to each weighing hopper with a combination weigher in a substantially constant amount and evenly. Is small, and the combination weight is 0.
The present invention relates to a dispersing and supplying apparatus for a combination weigher corresponding to an article having an extremely wide weighing range of 6 g to 5 g and a small amount.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for dispersing and supplying this kind of article having a small apparent specific gravity, for example, Japanese Utility Model Laid-Open No. 7-38927.
As disclosed in US Pat. This is a device for loosening a lump of articles by reciprocating between the trays of the above-mentioned linear feeder with a drive motor driving an article agitating member provided above a linearly arranged linear feeder to be concentric with the center of the dispersion feeder. The reversal angle of the article stirring member is 90
Since the temperature is as small as 150 ° to 150 °, it was difficult to judge variations due to uneven supply from the dispersion feeder, and to judge near the center when articles were raised on the dispersion feeder. Also, even if the article stirring member is extended, the rotation angle is small, so that a bridging phenomenon occurs and the processing capacity is greatly reduced, and it takes time even if an article stirring apparatus corresponding to the processing capacity is prepared and replaced. There was a problem.

[0003]

Therefore, there are many demands for the present invention to further reduce the lower limit of the weight of the combination as compared with the above-described conventional example, thereby expanding the range of the weight to be combined and increasing the processing capacity. It has become. For example, the apparent specific gravity is 0.
For example, when packing skipjack knives such as 01, 3 g to 5 g was mainly used for 2 to 4 servings at home, but recently 0.6 g to 1 g for 1 serving of okonomiyaki and yakisoba.
There is an increasing demand for packing g, and there is a demand for a wide range of devices capable of packing conventional 3 g to 5 g. Also, in order to avoid a decrease in the amount of shipment due to a small weight of one pack, a distributed supply device for a combination weigher that can be easily adjusted so that the above-mentioned weighing range can be expanded and high capacity can be maintained while maintaining high accuracy. It is something to offer.

[0004]

In order to achieve the above-mentioned object, the present invention relates to an article feeding apparatus for a combination weigher, in which a conical dispersion feeder provided at a central portion is provided with an upper end concentric with the center thereof. Attached to the motor frame is a plurality of crotchable replaceable agitators that repeat forward and reverse rotation, and the level sensor that controls the supply feeder by detecting the layer thickness of the dispersion feeder is attached to the motor frame. Attached to the motor frame, fit the motor frame into a plurality of columns supported by the combination weigher main body,
By adjusting the agitator and the level sensor integrally up and down along the pillar, it is possible to supply even if a very small amount of dispersion is supplied, and a plurality of forks are provided on the upper part on the same axis as the agitator. A bridge breaker in the shape of a circle is installed, the tip of which is located near the outlet of the above-mentioned feeder to prevent the bridge of the feeder and to equalize the supply to the dispersion feeder, and to supply the small-volume feeder. At the same time, a funnel is provided near the crotch portion of the agitator, concentric with the center of the dispersion feeder, and the support rod to which the funnel is attached is adjusted up and down so as to reduce variation in the drop position on the dispersion feeder. And a plurality of radially extending linear feeders provided below the dispersion feeder. The cold air is projected a plurality of rods radially axis of rotation parallel to the tray over da a plurality in the range of the tray width. These reikis are mounted on a reiki frame which is a ring-shaped plate, and the reiki frame is fitted into a plurality of columns supported by the combination weigher main body, and the reiki is adjusted up and down along the columns, and the traveling direction of the linear feeder is adjusted. By rotating this reiki in a direction opposite to the above, the amount supplied to the supply hopper is made uniform and the amount is not excessive.

[0005]

In the present invention, the operation of the agitator extends not only to the distributed feeder in its operating range but also to a plurality of radially straight feeders provided below the distributed feeder. Forward and reverse rotation angle is 150
It can be selected by the articles and their combination weighing, etc. so that the rotation becomes 1 rotation or more from the degree, so the dispersion on the dispersion feeder can be equalized, and the auxiliary effect of the bridge breaker provided coaxially with the agitator can be added, Also, by selecting the shape of the agitator suitable for weighing, it is possible to expand the weighing range, improve the processing capability and the weighing accuracy, and furthermore, the adjustment work when changing the weighing can be easily performed.

[0006]

1 and 2 show a first embodiment of the present invention. In FIG. 1, A is a plan view of the dispersion supply device, and B is X
FIG. 2 is a schematic front view of the combination weigher according to the present embodiment, as viewed from a direction −X ′. In FIG. 1, reference numeral 1 denotes an agitator motor;
It is fixed to. Reference numeral 3 denotes four columns supported by a main body of a combination weigher (not shown), and bosses 4a of the motor frame 2 are mounted on two diagonally positioned columns 3a.
Are fitted and fixed by the push screw 5a. The motor frame 2 is a rectangular plate as shown in the figure. The position of the motor frame 2 is adjusted by changing the weighing so that the push screw 5a is loosened and moved in the vertical direction.
Reference numeral 6 denotes a supply feeder for feeding the articles 7 from a storage hopper or the like (not shown) to the dispersion supply device. Reference numeral 8 denotes a linear feeder 24 in which the articles 7 supplied by the supply feeder 6 are arranged radially (in this example, 10 feeders are used). ), And has a conical shape. Reference numeral 9 denotes an agitator, which is composed of an agitator 10 having a plurality of crotch-shaped ends, a bridge breaker 11 having a plurality of forks in the middle, and a coupling 12 connected to the motor 1. . Reference numeral 13 denotes a funnel provided to reduce the variation in the drop position of the articles 7 supplied from the supply feeder 6, and is attached to the motor frame 2 by two support rods 14. A level sensor 15 detects the layer thickness of the article 7 supplied on the dispersion feeder 8 and is attached to the motor frame 2 by a bracket 16. Therefore, it is adjusted by moving up and down together with the stirrer 9. Reference numeral 17 denotes a plurality of rods mounted radially from the rotation shaft, and for example, a rake rod 18 and a rake motor 19 disposed at the center and both sides of the linear feeder 24, respectively.
And a bracket 20, which are mounted on a reiki frame 21 in correspondence with the straight-ahead feeder 24. The reiki frame 21 is a ring-shaped plate, and four bosses 22 are fitted into upper portions of two pillars 3b and middle of the two pillars 3a among the four pillars, respectively, and are attached by push screws 23. The adjustment is performed by loosening the push screw 23 and moving it up and down according to the layer thickness of the article supplied to the linear feeder 24.

The agitator motor 1 is provided with a speed reducer, and the rotation of the agitator 9 is, for example, turned off at a speed of 0.5 times per second for 1.5 rotations, the power is turned off, and the rotation due to inertia is almost stopped. Then, the power of the inversion is turned on to perform 1.5 rotations, and after a short stop time as described above, the motor rotates forward and repeats this operation. The normal rotation time, the stop time, and the reversal time of the motor are operated by a timer and can be changed in setting, and are adjusted by observing the distributed supply state of the articles. Further, in the figure, the agitator 10 has two round bars having a diameter of, for example, 3 mm to 4 mm in the 180-degree direction with the lower end expanding in two forks, but may be three or four. This agitator 1
0 is, for example, for 0.6 g to 1 g, 2 g to 3 g, 4 g to 5 g
g are prepared in advance and can be easily replaced by the coupling 12. Since the outlet of the supply feeder 6 is relatively close to the center rod of the agitator 10, the article is liable to cause a bridge. Therefore, the tip of the bridge breaker 11 is set at a position slightly smaller than the outlet of the supply feeder 6; The two round bars are projected in the 180-degree direction, but may be three or four. The bridge breaker 11 functions to scrape out the articles at the exit even when the bridging phenomenon does not occur, and repeats the normal rotation and the reverse rotation. During this time, the articles are dispersed on the dispersion feeder 8 in the order of left, center, right, and center. It is prevented from falling in one direction. If the articles are unbalanced in the dispersion feeder 8, the articles fed to the linear feeder 24 are interrupted, and the number of weighers participating in the combination weigher is reduced. Therefore, the combination accuracy is deteriorated or the combination is not established. Processing capacity decreases. Therefore, even if the articles are unbalancedly supplied to the dispersion feeder 8, the articles can be dispersed and sent to the straight traveling feeder 24 while being smoothed by the agitator 10.

In this embodiment, as described in the above-mentioned problem, recently, there are many demands for packed products having a relatively small weighing of 0.6 g to 1 g, so that dispersion control and quantitative control are increasingly difficult. For this purpose, it is necessary to further narrow the position at which articles fall from the supply feeder 6, and the funnel 13 is adjusted by loosening the two support rods 14 and the nut 14 '. If the article has an apparent specific gravity of at least one order of magnitude smaller than an ordinary article, such as a cutlet of a skipjack, such as 0.01, the weighing is 0.6 g and 1
Since there is a large difference in volume even with g, an adjustment corresponding to the layer thickness of each article is required in order to improve weighing accuracy and processing capacity. That is, it is necessary to delicately change the layer thickness on the dispersion feeder 8 or make the height of the lower end of the agitator 10 correspond to the change in the layer thickness. Therefore, in the adjustment in the embodiment, since the level sensor 15 and the agitator 10 directly connected to the agitator motor 1 are fixed to the motor frame 2, the adjustment can be performed simultaneously by loosening the above-mentioned push screw 5a. In the weighing range of 0.6 g to 1 g, the space between the bridge breaker 11 and the supply feeder 6 has a margin in advance, so that the agitator 10 and the bridge breaker 11 may be fixed. Therefore, the stirrer 9 is adjusted by moving the motor frame 2 up and down simultaneously. The articles 7 are supplied onto the dispersion feeder 8 and are arranged in the aforementioned radially extending linear feeders 24 (10 in this example).
) In FIG. 2, articles 7 discharged from radially provided linear feeders 24 are once supplied to supply hoppers 25 provided below the corresponding linear feeders 24, and then provided at the lower parts thereof. The articles in the weighing hopper 26, which are supplied to the weighing hopper 26 and selected as a result of the combination calculation by the computer, are discharged to the collecting chute 27 and commercialized as one pack. Therefore, the reiki 17 provided corresponding to each of the rectilinear feeders 24 rotates at a speed of one revolution per second in the direction of the arrow, and the layers of the articles conveyed on the rectilinear feeders 24 are smoothed. The reason why the direction of rotation of the reiki bar 18 is opposite to the direction of conveyance of the rectilinear feeder 24 is that an extremely small amount is conveyed, so that the amount supplied to the supply hopper 25 does not become excessive. In this case, too, it is necessary to adjust the layer thickness by weighing the distance between the tip of the reiki rod 18 and the tray surface of the rectilinear feeder 24. Therefore, it is necessary to loosen the four push screws 23 and adjust the reiki frame 21 up and down. Become.

FIG. 3 shows a second embodiment. Since the figure is mostly the same as the first embodiment, the figure is only a front view corresponding to 1B. This embodiment shows a case where the weighing is relatively large, 4 g to 5 g, and therefore, the funnel 13 of the first embodiment becomes unnecessary. Also, as shown in the figure, the bifurcated divergent portion is larger at the lower end of the agitator 10 than in the first embodiment, and is larger than the end face of the dispersion feeder 8 so as to wrap a part of the straight-ahead feeder 24. Is provided. In this example, since the layer thickness of the articles in the dispersion feeder 8 and the straight feeder 24 is increased, the position of the rake frame 21 is also adjusted to a higher position than in the first embodiment.

[0010]

As described above, in the prior art, the apparent specific gravity is 0.
In the case of a very small combination such as 01 and particularly in the case of a combination of small weighings such as 0.6 g to 1 g, and in the measurement of a product having a weighing ratio of about 1 to 8 such as a pack of 0.6 g to 5 g, there is no uniformity. However, according to the present invention, a stirrer with a forward / reverse rotating agitator and a bridge breaker is installed on the dispersion feeder, and is attached together with the level sensor to the frame of the agitator motor, thereby forming the frame. By adjusting the layer thickness on the dispersion feeder easily only by adjusting the vertical movement, the apparent specific gravity is extremely small due to the additional installation of the funnel on the dispersion feeder and the reiki on the straight-ahead feeder,
In addition, it is possible to increase the precision of combination weighing and improve the processing capability of a small-volume packed product by simple adjustment when changing the weighing of one combination weigher. Further, there is no need to change the position of the tip of the supply feeder toward or away from the center of the combination weigher, so that there is an effect that it is possible to immediately respond to a product having a large weighing ratio.

[Brief description of the drawings]

FIG. 1 is a plan view A according to a first embodiment of the present invention and a front view B of the plan view A taken along line XX ′.

FIG. 2 is a schematic configuration diagram of a combination weigher according to an embodiment of the present invention.

FIG. 3 is a front view of a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 agitator motor 2 motor frame 3a, 3b pillar 4a boss 5a set screw 6 supply feeder 7 article 8 dispersion feeder 9 stirrer 10 agitator 11 bridge breaker 12 coupling 13 funnel 14 support rod 15 level sensor 17 rake 18 rake rod 19 Motor 21 Reiki frame 22 Boss 23 Push screw 24 Linear feeder 25 Supply hopper 26 Weighing hopper 27 Collecting chute

Claims (4)

[Claims] 1. A conical dispersion feeder in an article supply device of a combination weigher, an agitator which repeats normal rotation and reverse rotation, wherein a tip provided at the center of the dispersion feeder is replaceable in a plurality of crotches, and A motor frame provided with an agitator motor for driving the agitator, and a level sensor attached to the motor frame for detecting the layer thickness of the dispersion feeder and controlling the supply feeder, and a plurality of supporters supported by the combination weigher main body By adjusting the motor frame up and down along the pillars, the agitator and the level sensor can be integrally adjusted so that even a very small amount of dispersion can be supplied without dispersion. Feeding device. 2. A plurality of fork-shaped bridge breakers whose ends are located near the outlet of the supply feeder are provided on the upper part on the same axis as the agitator, to prevent the supply feeder from being bridged and to supply the supply to the dispersion feeder. The dispersion supply device for a combination weigher according to claim 1, wherein the equalization is improved. 3. The dispersion feeder is characterized in that a funnel whose center is concentric is provided in the vicinity of the crotch portion of the agitator and is adjusted up and down to reduce variations in the position of the article falling on the dispersion feeder. A dispersion supply device for a combination weigher according to claim 1 or 2. 4. A plurality of rods projecting radially on a rotating shaft provided parallel to a tray surface of the linear feeder, respectively, on a plurality of radial linear feeders provided below the dispersion feeder. Equipped with a plurality of reikis provided in the range of the tray width, mounting the reikis provided on each of these rectilinear feeders to a reiki frame, and adjusting the reiki frame up and down along a plurality of columns supported by a combination weigher main body. Rotating the reiki in a direction opposite to the traveling direction of the rectilinear feeder so that the amount supplied to the supply hopper is made uniform and is not excessive.
4. The dispersing and feeding device of the combination weigher according to 2 or 3.