JPH0536324U - Commodity weighing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] A rotating body that positively rotates is provided at the branching boundary from the dispersion feeder to the straight-ahead feeder of the combination weigher to shake off the stagnation of the object to be processed and ensure reliable processing. To do so. [Structure] On a side plate 22 of a plurality of rectilinear feeders 20 radially arranged from a lower portion of a peripheral portion of a table 11 of a dispersion feeder 10 of a combination scale, in parallel with the side plates 22, and a dispersion feeder.
On the radial axis from the center of 10, the rotary actuator
Rollers 30 which are driven in forward and reverse directions by 35 are respectively provided. [Effect] Even if the object to be processed that is distributed and supplied from the dispersion feeder to the straight feeder is an article having poor conveyance performance, it can be comfortably supplied, and it is possible to prevent a decrease in weighing accuracy and a decrease in processing speed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an article supply device used in a combination weigher that has a straight advance feeder, a weighing mechanism, etc. arranged on the circumference. The present invention relates to an article supply device that can cope with bad conditions.

[0002]

[Prior Art]

 In a combination weigher in which a plurality of rectilinear feeders, weighing mechanisms, etc. are radially arranged around a dispersion cone formed in a substantially conical shape, the item to be handled is long and soft (for example, string-shaped jelly confectionery, In the case of broiler meat, etc.), if the product straddles two adjacent straight feeders, the product cannot be smoothly supplied to each measuring mechanism, and the processing capacity and the measuring accuracy are reduced.

As a solution to this problem, for example, those proposed and disclosed in Japanese Utility Model Publication No. 62-146929, Japanese Utility Model Publication No. 1-59831, etc., all have complicated structures and increase manufacturing costs, and Depending on the object to be processed, the problem has not been solved yet.

Then, by further improving such a prior art, a device which can achieve the intended purpose with a simpler structure was obtained by the prior invention (actual application No. 2-12269). In this device, a rotatable roller is installed at the branch boundary at the periphery of the dispersion feeder of the combination weigher, with the axis line in the radial direction of the dispersion feeder, and the workpieces that have spread over the boundary are distributed by the dispersion feeder. The purpose is to shake the roller to the left or right by the vibration of the roller and swing it off onto the tray of the straight feeder.

[0005]

[Problems to be solved by the device]

 However, in the device of this prior invention, the rotating force of the roller is weak and the object to be processed which has spread over is relatively heavy, or the size is long and slender and the length is long. Since the force to shake off forcibly is weak, it may not be possible to process everything by shaking it off, or it may take a long time to shake off and the processing capacity of the combination weigher may decrease. The driving force of the roller in this system is due to the vibration of the dispersion feeder, the gap (so-called rattling) between the shaft and the bearing of the roller, and the slight deviation of the center of gravity of the roller. When a large amount of objects to be processed are in contact with each other over the rollers, the rotational force for the purpose of shaking off is weak. Therefore, it was effective when applied to an article with a weight of about 10 g or less as a single piece such as a striped jelly confectionery, but when processing a broiler meat etc. with a weight of 200 to 300 g as a single piece. Was found to be inappropriate.

In addition, as for the broiler meat that is quantitatively weighed and packaged by a combination weigher and shipped, fresh broiler meat with high freshness has a better taste as a shipping distribution route, and is preferred by consumers. The proportion of demand is increasing compared to frozen products. This fresh broiler meat is packed in ice after weighing and sent out by a cold storage car, but the product temperature does not reach the ice temperature immediately and it takes several hours after the start of transportation. And the time it takes for the product temperature to reach the ice temperature affects the freshness of the broiler meat when it is in the hands of retailers and consumers (the shelf life). In addition, hygiene regulations regarding the handling of edible birds have recently been promulgated, and maintaining freshness has become a problem. Under these circumstances, a recent trend is that broiler meat is rapidly cooled after being disassembled, then weighed and packaged, frozen, and shipped on a fresh distribution route.

Since the surface of such a chilled broiler meat is slightly frozen, and the inside and the back surface are not frozen, the frozen form does not maintain the frozen form. It is in a mixed state with things. Even if it is frozen, the conveyer to the combination weigher and the combination weigher are temporarily stopped for some reason, and when the frozen state is released, the state becomes flexible. This rapid cooling process is such that it is expected to release the freezing after weighing with a combination scale and packaging.

When the broiler meat in such a state is weighed by a conventional combination weigher, of course, a method of swinging off the object to be processed at the dispersion boundary from the dispersion feeder to the straight traveling feeder, for example, the above-mentioned Japanese Patent Application No. 2-12269. The roller type as obtained by No. cannot be applied when there is a mixture of a soft material that is frozen and solidified.

According to the present invention, such a problem is solved, and a rotating body that positively rotates at a branch boundary portion from a dispersion feeder to a straight traveling feeder is provided, so that the rotor can be extended regardless of the object to be processed. The purpose is to provide an article supply device that can be reliably shaken off.

[0010]

[Means for Solving the Problems]

 The present invention is a dispersion feeding unit for articles used in a combination weigher in which a plurality of rectilinear feeders and a weighing mechanism are arranged around a dispersion feeder having an inclined surface, from the lower part of the peripheral edge of the dispersion feeder. This is an article supply device for a combination weigher having a structure in which a roller that is driven to rotate by a rotary actuator is arranged on a side plate of a straight-moving feeder in parallel with the side plate and on a radial axis from the center of the dispersion feeder.

According to the present invention, as the straight feeder, a plurality of tray depths are formed in the traveling direction, a shallow tray portion is provided on the dispersion feeder side, and the tray is provided on the side plate of the deep tray portion. It is preferable that the rollers are arranged so that the article to be treated can be easily separated. The roller used in the present invention may have a smooth surface, but having a structure in which a plurality of grooves parallel to the axis are provided is useful for shaking off a workpiece to be processed. preferable. Of course, when cleaning the surface of the roller, it is desirable that the roller has irregularities formed within a range that does not cause any inconvenience. An air motor can be used as the rotary actuator that rotates the roller. Alternatively, it may be an electric motor.

[0012]

[Action]

 According to the present invention configured as described above, a long and soft object to be processed including solid particles supplied to and dispersed by a dispersion feeder travels on the straight feeder, and a boundary portion between adjacent straight feeders. Those that have reached the position are in a state of straddling the roller provided at the position. However, since this roller is normally and reversely rotated by the rotary actuator attached to the mounting portion, the article to be processed straddled is swung off promptly by the positive rotation of the roller, and the advancing straight ahead. It will be supplied by being dropped into one of the feeders, and will be sent to the measuring mechanism etc. through the straight feeders without staying.

In addition, the mixed solid articles to be processed are moved toward the front end side by the vibrations that are constantly urged during operation in the straight-ahead feeder to be received across the rollers. While the tray of the straight-ahead feeder reaches the position where the width of the tray is widened, the rotation of the roller and the vibration act synergistically, and the article in the straddled state becomes unstable. Will be accepted on the top.

[0014]

【Example】

 Next, an embodiment of the article supply apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a part of the article supply device of the present invention, and FIG. 2 is a vertical cross-sectional view of FIG. 1, which shows an article supply in a conventional combination scale. Like the device, it consists of a dispersion feeder 10 and a plurality of straight advance feeders 20.

As shown in these figures, in the dispersion feeder 10, a table 11 has a flat conical shape and is connected to a drive source 15 arranged in the central portion under the table 11.

The linear feeders 20 are radially arranged around the dispersion feeder 10 in a one-to-one correspondence with each weighing mechanism (not shown). Each of the linear feeders 20 is arranged in a state where the side plates 22 of the tray 21 are adjacent to each other. As shown in FIG. 2, a vibration source 28 is coupled to the lower surface of the tray 21 of each straight feeder 20 so that the tray 21 is vibrated so that the article moves in the axial direction. The bottom of each tray 21 is horizontal or slightly inclined forward. Further, the side plate 22 is radially opened in the traveling direction in the latter half of the dispersion feeder 10 close to the table 11 side, and the front half is formed to have a width corresponding to the upper opening of the feed hopper (not shown) of the combination scale provided at the lower end of the tip. Are parallel to each other.

At positions corresponding to the upper sides of the tray 21 side plates 22 that are adjacent to the linear feeders 20 having the above-described relationship, the straight feeders 20 are provided from directly below the branch boundary portion 16 of the article from the dispersion feeder 10 to the respective linear feeders 20. Rollers 30 that are driven in the forward and reverse directions are provided in the sections until the side plates 22 of the tray 21 are interrupted.

In this specific example, as shown in FIGS. 2 to 4, the roller 30 is located on one side of the side plate 22 of the tray 21, the axis of which is substantially parallel to the bottom surface of the tray 21, and the dispersion feeder 10 is provided. The table 11 is supported by supporting pieces 25, 25 ′ provided at a lower position of the peripheral portion 12 of the table 11 and at a separated position of the tray 21 side plate 22 of the advancing feeder 20. The roller 30 is rotationally driven by a rotary actuator 35 attached to a support piece 25 'attached to the front half side plate 22 of the tray 21.

A plurality of grooves 31 are provided on the surface of the roller 30 at equal positions parallel to the axis. Further, a connecting hole 33 having a required length from the shaft end is provided at one end of the shaft 32 of the roller 30, and the output shaft 35 ′ of the rotary actuator 35 is fitted into the connecting hole 33 and fixed by a set screw 36. It is fixedly connected. The other shaft end 32 ′ of the roller 30 is rotatably supported by a support piece 25. The rotary actuator 35 is an air-driven type, 37 and 37 'are compressed air inflow / outflow hoses, and forward / reverse rotation is switched at a required interval by a separately installed automatic switching valve (not shown). It is preferable that each roller 30 attached to the dispersion feeder 10 is intensively operated to drive in the forward and reverse directions.

An electric motor may be used as the rotary actuator 35. Further, the rotary actuator 35 may be attached to the table 11 side of the dispersion feeder 10.

In the article supply apparatus of the present invention having the above-described structure, a slender and soft article to be treated (eg, broiler meat that has been subjected to quenching treatment) including solid matter is provided near the top of the table 11 of the dispersion feeder 10. When the product is supplied, the articles to be processed are distributed on the table 11 by the operation of the dispersion feeder 10, reach the peripheral portion while sliding, and flow into the central portion of the tray 21 of each straight feeder 20. At this time, the article to be processed which has moved to the branch boundary portion 16 of each straight feeder 20 to the tray 21 is in a state of being received by the roller 30 provided at the lower position and directly advances to the straight feeder 20. Instead, it is in a state of straddling the roller 30.

However, since the roller 30 repeats forward / reverse rotation of about 180 ° at a required time interval (about 1 second interval in the specific example) by the rotary actuator 35, the article to be processed in a state of straddling over the roller 30. The roller 30 is swung off on the tray 21 of the straight feeder 20 on either side by the rotation of the roller 30. Further, the solid article to be processed advances on the roller 30 by the vibration constantly urged by the straight-ahead feeder 20, and for example, even if the tray 21 is in a state of straddling the tray 21, the width of the tray 21 is widened. When it reaches a certain position, it is dropped on the tray 21.

At this time, if the roller 30 having the groove 31 on the surface as described above is used, it adheres to the surface of the roller 30 when handling an article having poor conveyance performance (for example, a soft article or an article that easily adheres). It is possible to prevent it from happening, and it is effective in swiftly swinging it off and releasing it even if a straddle occurs once.

Of course, the same applies even if the article to be processed is elongated and easily entangled, and has a small apparent specific gravity, and the positive and reverse drive of the roller 30 and the table 11 of the dispersion feeder 10 are applied. Due to the synergistic effect of the vibration propagating to the roller 30, the article to be processed that straddles the roller 30 can be shaken off without stagnation. If the article to be treated is an article with low adhesiveness, the roller 30 may have no groove on its surface. Further, unevenness may be formed on the surface of the roller 30 instead of the groove 31 as described above. When the unevenness is formed on the roller surface, it is preferable that the cleaning operation is easy so that cleaning after use does not interfere.

Next, according to the present invention, when the articles to be processed are distributed and fed from the above-mentioned dispersion feeder 10 to the respective straight-ahead feeders 20, in order to make the dispersion feeding operation smoother, it is shown in FIGS. 5 to 7. As shown in the figure, the tray bottom of the straight feeder 20 has a shallow portion 26 at a position close to the dispersion feeder 10, and the tray bottom in front of it (on the side of the supply hopper) forms a portion 27 deeper than the shallow portion 26. The roller 30 may be arranged on the side plate 22 of the portion 27 having a deep tray bottom as in the above-described specific example.

This structure will be explained with reference to FIGS. 8 and 9. When the article to be treated has a relatively large weight per unit such as broiler meat and has a large surface area, the dispersion is large. The layer thickness, weight, etc. of the articles to be processed on the dispersion feeder 10 should be detected so that the layer thickness does not become too thick when feeding onto the feeder 10 (so that the broiler meat does not overlap). A supply device (conveyor, vibration feeder, etc.) for the article to be processed onto the dispersion feeder 10 is controlled. Here, as shown in FIG. 8, when the broiler meat A is supplied from the dispersion feeder 10 onto the straight advance feeder 20 as described above, and the broiler meat A is already stored in the supply hopper 40, the straight advance feeder of the series. 20 is not driven. However, the dispersion feeder 10 is driven if the supply hoppers 40 of other series are empty.

Therefore, if the tray of the straight feeder 20 is deep from the outer periphery of the dispersion feeder 10, if the broiler meat A is already stored in the feed hopper 40 of a certain series and the feed feeder is not driven. , The broiler meat A is fed on the tray of the straight feeder 20 until the broiler meat A is piled up on the tray, and the broiler meat A is fed as it is to the supply hopper 40. There is a risk of exceeding the appropriate amount corresponding to the combination weighing of.

A feature of the combination weigher is that even if the amount of supply to each of the arranged supply hoppers 40 shows considerable variation, accurate quantitative measurement can be performed, but the amount of supply is still The variation is preferably within an appropriate range in terms of combined measurement accuracy. If the supply amount is too large and the number of supply hoppers that can reach the weighed amount by combining 1 to 2 supply hoppers increases with respect to the combination weight, the number of combinations decreases, and as a result, a combination with high accuracy is obtained. The probability of gaining is reduced.

The number of weighing hoppers (located below the supply hopper) that normally obtain a good combination is the number of weighing hoppers participating in the combination calculation: 9 to 11 The number is 4 to 5. Therefore, it is not preferable that the number of discharged hoppers is one or two, and in an extreme case, one weighing hopper may exceed the combined weighing. Therefore, in the supply section to the dispersion feeder 10, the average value of the number of weighing hoppers to be discharged becomes 4 to 5 depending on the characteristics of the object to be processed, such as the driving amplitude intensity and driving time of the feeder. Is set to be. However, as described above, in the case of an article to be treated such as a broiler meat A, which has a relatively large weight per piece, its adjustment is not easy.

As a measure to solve such a problem, as shown in FIG. 9, the shallow portion (first stage) 26 of the tray of the straight advance feeder 20 having the depth h1 is properly extended to the dispersion feeder 10 side. The broiler meat A already exists in the shallow portion 26 of the first stage, and when the straight feeder 20 in this state is not driven, the distributed feeder 10 causes the broiler meat A of the first stage 26 to move further. By preventing the broiler meat A from being pushed in, it is possible to ultimately prevent an excessive supply to the supply hopper 40. The roller 30 for shaking off the object to be processed supplied between the trays of the advancing straight feeders 20 is the same as that in the above-described example on the side plate 22 above the tray bottom portion (second stage) 27. The purpose can be achieved by arranging in a way.

[0031]

[Effect of the device]

 As described above, according to the present invention, at the branch boundary portion from the dispersion feeder to the straight traveling feeder, the rollers are arranged so as to drive in the forward and reverse directions between the adjacent straight traveling feeders. Even if the product contains the product and the transport performance is poor, the product is easily supplied onto each straight feeder and the product does not straddle the side plate of the feeder tray, so that it is possible to prevent the deterioration of the measurement accuracy and the processing speed.

Further, by forming the unevenness on the surface of the roller, it is possible to surely distribute the article to one of the both sides without supplying it even if the article straddles the roller. However, it can be done more effectively.

Further, when the article to be processed is relatively heavy and large, the tray portion of the straight advance feeder is formed so that the dispersion feeder side becomes shallower in order to perform the accurate combination weighing. It is possible to prevent excessive supply to one straight feeder, and it is possible to perform highly accurate combined weighing.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of an embodiment of an article supply apparatus according to the present invention.

FIG. 2 is a vertical sectional view of FIG.

FIG. 3 is a diagram showing a relationship between a tray of a straight advance feeder and a mounting portion of a roller.

FIG. 4 is a perspective view showing a main part of a straight feeder that is attached to a tray and rollers.

FIG. 5 is a side cross-sectional view of a main part showing another example of the straight advance feeder.

FIG. 6 is an enlarged sectional view taken along line A of FIG.

FIG. 7 is an enlarged sectional view taken along the line B of FIG.

FIG. 8 is an operation explanatory view at the time of distributed supply, and is a view showing a supply mode of an object to be processed having a large weight and a large surface area in the case where the tray bottom portion of the straight advance feeder has a constant depth.

FIG. 9 is an operation explanatory view at the time of distributed supply, showing a supply mode of an object to be processed which is heavy and has a large surface area when the tray bottom of the straight feeder is formed with a shallow part and a deep part. It is a figure.

[Explanation of symbols]

 10 Dispersion feeder 11 Table 12 Peripheral part 15 Drive source 16 Branching boundary part 20 Straight advance feeder 21 Tray 22 Tray side plate 25, 25 'Roller support piece 26 Shallow bottom part (first stage) 27 Tray bottom is deep Part (Second Stage) 30 Roller 31 Roller Groove 32 Roller Shaft 33 Connection Hole 35 Rotary Actuator 35 'Rotary Actuator Output Shaft 40 Supply Hopper

Claims (3)

[Scope of utility model registration request] 1. A dispersion feeder having an inclined surface,
A dispersion feeding section for articles used in a combination weigher by arranging a plurality of rectilinear feeders and a weighing mechanism, from the lower part of the peripheral edge of the dispersion feeder to the side plate of the rectilinear feeder, parallel to the side plates, and distributed. An article supply device for a combination scale, characterized in that rollers, which are driven forward and backward by a rotary actuator, are arranged on the radial axis from the center of the feeder. 2. The straight advance feeder has a plurality of tray depths, a shallow bottom tray portion is provided on the dispersion feeder side, and the rollers are disposed on a side plate of the deep bottom tray portion. The article supply device of the combination scale according to claim 1. 3. The article supply apparatus for a combination scale according to claim 1, wherein the roller has a structure in which a plurality of grooves parallel to the axis are provided on the surface of the roller.