JP2514812Y2 - Commodity weighing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an article supply device used in a combination scale in which a straight feeder, a measuring mechanism, etc. are arranged on the circumference. The present invention relates to an article supply device capable of dealing with a condition that an object to be treated is relatively dispersed and has poor supply properties.

(Prior Art) In a combination balancer in which a plurality of rectilinear feeders and a measuring mechanism are radially arranged around a dispersion cone formed in a substantially conical shape, the item to be handled is long and soft (for example, a string-like one). In the case of jelly confectionery, etc.), if the goods straddle two adjacent straight feeders, the movement of the goods as well as the succeeding goods is blocked, and the goods cannot be smoothly supplied to each weighing mechanism. Also, there is a drawback that the weighing accuracy is lowered.

As a solution, various proposals have already been made.
For example, there are those disclosed in Japanese Utility Model Publication No. 62-146929, Japanese Utility Model Publication No. 1-59831, and the like. However, in all of these, the structure is complicated, the manufacturing cost is increased, and the problem still remains unsolved depending on the object to be processed.

Therefore, by further improving such a prior art, an apparatus capable of achieving the intended purpose with a simpler structure was obtained by the invention of the prior application (Japanese Patent Application No. 2-12269). In this device, a rotatable roller is arranged at the branch boundary at the peripheral edge of the dispersion feeder of the combination weigher, with the axis line in the radial direction of the dispersion feeder, and the object to be processed that has spread over the boundary is distributed by the dispersion feeder. By the rotation action of the roller due to the vibration of
It is intended to be shaken off on the tray of either the left or right straight feeder.

(Problems to be Solved) However, in the device of the invention of this prior application, the rotating force of the roller is weak, and the object to be processed that has spread over is relatively heavy, or the dimension is long and slender and the length is long. In this case, since the force of forcibly shaking off to the left or right is weak, it may not be possible to shake off all of them, or it may take a long time to shake off and the processing capacity of the combination scale may decrease. The driving force of the roller in this system is generated by the vibration of the dispersion feeder and 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. However, when a large number 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, like the long and thin string jelly confectionery,
Although it was effective when applied to an article of about 10 g or less, it was found to be unsuitable when treating, for example, broiler meat whose weight is 200 to 300 g. Further, in the device in the above-mentioned No. 62-146929, the rod-shaped article contact member hung vertically from the upper part of the mutual boundary of the rectilinear feeders at the dispersive boundary from the dispersion feeder to the rectilinear feeders, the traveling direction of the rectilinear feeders. This is a method of reciprocating in a direction perpendicular to, and shaking off the straddle of the object to be processed at the boundary.

In this method, the driving force for shaking off the stride is sufficient compared with the former method, but there is an advantage in adaptation due to the characteristics of the object to be treated. That is, for a relatively light and bulky product, it can be operated without damaging the object to be processed, but the boundary between the vertically extending rod-shaped member and the straight feeder is structurally suspended. In the meantime, the object to be processed may be pinched, and in the state close to the pinching, an extra external force is applied to the object to be treated,
The object to be processed may be broken or scratched. Such a state cannot be applied because it is caused by a combination weigher that treats broiler meat whose weight is about 300 g. In addition, the tray of the straight advance feeder can be removed with one touch when washing with water for sanitation, but since a rod-shaped article contact member is generally hung down above the straight feeder, one-touch removal of the tray is possible. It is an inconvenience because it gets in the way.

In 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-ahead feeder is provided to shake off an object to be processed regardless of the object to be processed. The object of the present invention is to provide an article supply device capable of performing reliable processing.

(Means for Solving the Problems) The present invention is a dispersion feeder having a plurality of rectilinear feeders and a weighing mechanism arranged around a dispersion feeder having an inclined surface and used in a combination weigher. At the boundary, set the axis to the radial direction of the dispersion feeder,
It is an article supply device of a combination weigher having a configuration in which a roller that is rotationally driven by a rotary actuator is arranged.

The roller used in the present invention may have a smooth surface, but it is preferable to have a structure in which a plurality of grooves parallel to the axis are provided in order to shake off an object to be processed. As a matter of course, it is desirable that the roller surface has unevenness in a range that does not cause inconvenience during cleaning.

An air motor can be used as the rotary actuator that rotates the roller. Alternatively, it may be an electric motor. These are attached to the inner surface side of the table of the dispersion feeder, and are configured so as not to come into contact with the object to be processed.

(Operation) According to the present invention having such a configuration, the long and soft article to be processed supplied to the dispersion feeder and dispersed is
Those traveling on the straight-ahead feeder and reaching the boundary between adjacent straight-ahead feeders are prevented from traveling by the roller provided at the position and are in a state of straddling the rollers. 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 feeders adjacent to each other are fed. It will be supplied by being dropped to any of the above, and will be sent to the measuring mechanism etc. through the straight advance feeder without staying.

If the support axis of the roller is tilted so that the tip end side is directed upward, the object to be processed received across the roller will have a greater distance from the straight-ahead feeder as it moves toward the tip end. The rotation of the roller and the vibration act synergistically due to the vibration that is normally applied, and the article in the straddled state becomes more unstable, and the upper surface of the tray of one of the straight advance feeders is positively activated. Will be accepted by.

Also, by providing a groove on the surface of the roller,
Even if the object to be processed has a large weight, the rotational force of the roller is surely applied, or the object is easily adhered,
From the state of straddling the roller, it can be shaken off on the tray of either the left or right straight feeder.

(Effect of the Invention) As described above, according to the present invention, at the branch boundary portion from the dispersion feeder to the straight advance feeder, the rollers located between the straight advance feeders having the tips adjacent to the dispersion feeder are driven in the forward and reverse directions. By arranging in this way, articles with poor conveyance performance can be comfortably supplied onto each straight-ahead feeder, and articles do not straddle the side wall of the feeder tray, and it is possible to prevent a decrease in weighing accuracy and a decrease in processing speed. Further, by forming unevenness on the surface of the roller, it is more effective to surely distribute the article to one of the both sides and to supply it without sticking even if the article straddles the roller. Can be done

(Example) Next, the article supply apparatus of this invention is demonstrated about one Example figure.

The apparatus shown in FIG. 1 and FIG. 2 is similar to the conventional article supply apparatus, and it has a dispersion feeder 10 and a plurality of linear feeders.
It is composed of 20 and.

The dispersion feeder 10 has a flat conical table 11
It is connected to a drive source 15 arranged in the center below the table 11.

A plurality of linear feeders 20 are arranged radially about the dispersion feeder 10 in a one-to-one correspondence with each weighing mechanism (not shown). Each of these straight feeders 20 is a tray
The side walls 22 of 21 are arranged so as to overlap with the adjacent ones. As shown in FIG. 2, a vibration source 25 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 articles move in the radial direction. Below the tip of each tray 21, a weighing hopper or an intermediate hopper (both not shown) of the combination scale is provided.

Table of distributed feeders 10 in the relationship described above
11 In the peripheral edge portion 12, rollers 30 which are driven in the normal and reverse directions are respectively provided at positions corresponding to the upper sides of the adjacent trays 21 side walls 22 of the respective straight advance feeders 20, that is, the boundary portion 16 of the article from the dispersion feeder 10 to the respective straight advance feeders 20. Is projected. In this specific example, as shown in FIG. 3 and FIG.
Is rotatably driven by a rotary actuator 37 mounted on the back side of the peripheral portion 12 of the table 11 via a mounting block 35. A plurality of grooves 31 are provided on the surface of the roller 30 at equal positions parallel to the axis. Further, the shaft 32 of the roller 30 is provided with a connecting hole 33 having a required length from the shaft end, and is inserted into the bearing hole 36 of the mounting block 35 from the shaft insertion hole 13 formed in the peripheral portion 12 of the table 11. Then, the output shaft 37 'of the rotary actuator 37 is fitted into the connecting hole 33 and fixedly connected by the set screw 38. Since the mounting block 35 also serves as a roller bearing, it is formed of an engineering plastic material (for example, MC nylon), and the front surface is a curved surface along the back side (inner side surface) of the peripheral edge of the table 11, and the roller is located at the center. 30 axes
A vertical hole 35 'for mounting a setscrew 38 for connecting the output shaft 37' of the rotary actuator 37 with the shaft 32 'is provided. The rotary actuator 37 is an air-driven one, and 39 and 39 'are compressed air inlet / outlet hoses. Forward / reverse switching is switched at a required interval by a separately installed automatic switching valve (not shown). It is preferable that the rollers 30 attached to the dispersion feeder 10 are intensively driven in the forward and reverse directions. 41 is a mounting bolt, and the mounting block 41 and the rotary actuator 37 are fixed by the mounting bolt 41.
And the inside of the peripheral portion 12 of the table 11 are fastened together.

An electric motor may be used as the rotary actuator 37. In some cases, each roller shaft is lengthened, and a gear is attached to the tip of the roller shaft, and a ring-shaped large gear (for example, a crown gear, a ring-shaped bevel gear, or a roller shaft on the roller shaft in this case) The gear is a bevel gear) is arranged coaxially with the center of the machine body, and this large gear is meshed with the gear on the roller shaft. It is also possible to employ a method of performing selective drive such as rotating in one direction for the required time.

The forward-reverse rotation driven roller 30 having the above-described configuration is attached with its tip end inclined upward, and its inclination angle can be arbitrarily set within a range of about 20 ° from the horizontal state depending on the article to be handled.

In the article feeder of the present invention configured as described above, when the slender and soft article to be processed (for example, jelly confectionery or broiler meat) is fed near the top of the table 11 of the dispersion feeder 10, the dispersion feeder 10 operates. The articles are dispersed on the table 11, reach the peripheral portion while sliding, and flow into the central portion of the tray 21 of each straight advance feeder 20.
At this time, the article to be processed which has moved to the branching boundary portion 16 of each straight advancing feeder 20 to the tray 21 has a roller 30 provided at that location.
It will be in a state of straddling over the roller 30 without being directly hindered by the straight forward feeder 20 due to the obstacle. 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 37, the article to be processed in a state of straddling the roller 30 is the roller 30. The rotation of the roller causes it to be shaken off on the tray 21 of the straight-forward feeder 20 on either side.

At this time, the roller having the groove 31 on the surface as described above.
If 30 is used, it is possible to prevent the roller 30 from adhering to the surface of the roller 30 when handling an article having poor conveyance performance (for example, a soft article, an article that easily adheres, etc.)
It is effective to quickly shake it off and release it.

Of course, the object to be processed is long and slender and easy to entangle,
The same applies even if the apparent specific gravity is light, the roller 30
Table 11 of dispersion feeder 10 with positive forward and reverse drive of
Due to the synergistic effect of the vibration applied to the roller 30 to the roller 30 part, 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 irregularities are formed on the surface of the roller, it is preferable to make the shape easy to wash so as not to hinder the cleaning after use.

[Brief description of drawings]

FIG. 1 is a partially omitted plan view of an embodiment of an article supply apparatus according to the present invention, FIG. 2 is a central longitudinal sectional view of FIG. 1, FIG. 3 is an enlarged side view of a part of a main part, and FIG. FIG. 4 is an exploded perspective view of a main part. 10 …… Dispersion feeder, 11 …… Table 12 …… Perimeter, 13 …… Shaft insertion hole 15 …… Drive source, 16 …… Branch boundary 20 …… Straight feeder, 21 …… Tray 22 …… Tray side wall , 30 …… Roller 31 …… Roller groove, 32 …… Roller shaft 33 …… Coupling hole, 35 …… Mounting block 36 …… Bearing hole 37 …… Rotary actuator 37 ′ …… Rotary actuator output shaft

Claims (2)

(57) [Scope of utility model registration request] 1. A dispersion feeder for use in a combination weigher in which a plurality of rectilinear feeders and a measuring mechanism are arranged around a dispersion feeder having an inclined surface, and an axis line is dispersed at a branching boundary portion at a peripheral portion of the dispersion feeder. An article supply device for a combination scale, wherein rollers that are driven in a forward and reverse direction by a rotary actuator are arranged in the radial direction of the feeder. 2. 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 thereof.