JPH03282221A - Article containing and discharging apparatus, article measuring apparatus and combined measuring apparatus - Google Patents

Abstract

PURPOSE:To omit an opening and closing type gate and to achieve high-speed operation and cost reduction by reversing the rotating direction of a container body having three partitioning walls, rotating the containing body, and discharging articles through different discharging ports. CONSTITUTION:Three article containing chambers 37A-37C are formed of three partioning walls 34 -36 in a containing body 32 of a pool cell 30. An article receiving port 38 and a discharging port 39 are provided at the side wall of a drum-shaped guide part 31. The containing body 32 is intermittently rotated in the clockwise direction and in the counterclockwise direction with a specified motor. At the lower side of the pool cell 30, cell bodies 61 and 62 having the same structure as the cell 30 and a guide member 63 for dividing and separating the articles are provided. In this constitution, the articles which are sent with a vibration feeder are accommodated into, e.g. the containing chamber 37A, of the pool cell 30 through the receiving port 38. The articles are turned in the clockwise direction and inputted into the cell body 61. After the measurement, the articles are turned by 120 deg. and discharged.

Description

[Detailed description of the invention] [Industrial application field]

The invention of this application relates to a combination weighing device, and an article storage/discharge device and article weighing device that are suitable for application to the combination weighing device, for example.

[Conventional technology]

Combination weighing devices are known that are used when, for example, bagging is performed by combining articles of the same type or different types that vary in individual weight to achieve a desired set weight (for example, Japanese Patent Laid-Open No. 12229/1983) reference). This conventional combination weighing device is attached to the top surface of a prismatic housing, for example, and includes a plurality of feeders that transport articles radially from the center line position of the prismatic housing, and a plurality of feeders provided below the outlet of each feeder. It includes intermediate hoppers as a plurality of article storage and discharge devices, and weighing hoppers as a plurality of weighing devices provided below each of the intermediate hoppers. FIG. 8 shows one set of intermediate hopper and weighing hopper. In this case, the weighing hopper 1 is provided with two article storage chambers 3A and 3B that are partitioned at the center by a partition wall 2. This weighing hopper 1 has a rod-shaped engagement member 12 attached to the weighing hopper 1 that is inserted into an engagement groove of an engagement portion 11 attached to a measuring device 6 provided in a housing 5 of the combination weighing device. Both ends of the body 12A are fitted,
It is attached removably. Then, the weighing device 6 measures the sum of the weight of the weighing hopper 1 and the weight of the articles accommodated in the storage chamber 4A or 4B. Since the weight of the weighing soba 1 is known in advance, the weight of the stored articles can be determined from the measured value. In addition, at the bottom of each storage chamber 3A, 3B of the weighing hopper 1,
Discharge gates 4A and 4B are provided for separately discharging the articles in the respective storage chambers 3A and 3B. Then, the discharge gate 4A corresponding to the goods that participated in the combination
Or 4B is opened and the article is dropped into, for example, an article collection chute (not shown). Further, the intermediate hopper 7 can be freely removed by fitting both ends of the rod-shaped body 10A of the engaging member 10 attached to the intermediate hopper 7 into the engagement groove of the engaging part 9 attached to the casing 5. will be installed on the This intermediate hopper 7 includes a storage chamber 3A of the weighing hopper 1 for storing articles. Two left and right discharge gates 8 for selectively supplying to 3B
A and 8B are provided. As shown in FIG. 9, when the discharge gate 8A of the intermediate hopper 7 is opened and closed, the articles stored in the storage chamber of the intermediate hopper 7 fall into the storage chamber 3A of the weighing hopper 1, and When the discharge gate 8B of the intermediate hopper 7 is opened or closed, the articles stored in the storage chamber of the intermediate hopper 7 fall into the storage chamber 3B of the weighing hopper 1. That is, by controlling the opening and closing of the discharge gates 8A and 8B of the intermediate hopper 7, the articles in the storage chamber of the intermediate hopper 7 are transferred to the weighing hopper 1.
It is distributed to two storage chambers 3A and 3B. The discharge gates 8A and 8B of the intermediate hopper 7 and the discharge gates 4A and 4B of the weighing hopper 1 are driven to open and close by respective opening and closing drive devices. FIG. 10 is a diagram showing an example of a conventional opening/closing drive device applied to the weighing hopper 1, in which the discharge gates 4A and 4B are
It is opened and closed by a link mechanism 1314 connected to this. That is, the link mechanisms 13, 14 are always biased by the biasing force of the spring 15 in the direction in which the gates 4A, 4B are closed. The linkage mechanism 13.14 then has its ends 13a, 1
The gate 4A is opened and closed by rotating the end 13a of the link mechanism 13 in the direction indicated by the arrow in the figure by rotation drive means (not shown) connected to each other at the link mechanism 14. The gate 4B is opened and closed by rotating the end portion 14a as shown by the arrow in the figure. The opening/closing drive devices for the discharge gates 8A and 8B of the intermediate hopper 7 are constructed in exactly the same manner.

[Problem to be solved by the invention]

As described above, the article storage/discharge device and the article weighing device used in the conventional combination weighing device have a hopper type structure, and the discharge gate is opened and closed to discharge the articles. Further, the next article cannot be thrown into the intermediate hopper 7 and the weighing hopper 1 until after the discharge gate is closed. Therefore, it is necessary to wait until the gates of the intermediate hopper 7 and the weighing hopper 1 are closed before loading the articles into them, which has the drawback of poor time efficiency. Further, an opening/closing drive mechanism is required to open and close the discharge gate, and as described above, this opening/closing drive mechanism uses a link mechanism using a plurality of links. but,
This link mechanism is constructed by combining a plurality of links and has a large number of parts, leading to an increase in the price of the device. Furthermore, there is also the problem that noise is generated when the discharge gate is opened and closed. By the way, it is conceivable to use a rotary feeder described in Japanese Utility Model Application Laid-Open No. 57-110429 as an article storage and discharge device that can eliminate the drawbacks of the hopper type. That is, FIG. 11 shows an article feeding apparatus using this rotary feeder 20, and the rotary feeder 20 has a rotor 22 provided inside an envelope 21. The envelope 21 has an article receiving port 23 and an article discharging port 24. As shown in the figure, a rotor 22 receives articles sent by a vibrating feeder 14 vibrated by a vibrator 13. It is formed into a tomoe shape so as to constitute a pocket portion 25 to be received from the entrance. Then, the rotor 22 is rotated only in the clockwise direction as shown by the arrow in the figure, and the articles received at the receiving port 23 are transferred to the discharge port 2.
It is configured to discharge from 4. According to this rotary feeder 20, since an opening/closing drive mechanism is not required, the drawbacks of the hopper type can be avoided. However, this rotary feeder 20 does not have a function of sorting articles, and cannot be used as it is in place of the intermediate hopper 7 of the above-mentioned example. Further, since this rotary feeder 20 rotates the rotor 22 only in one direction, the articles must be rotated in one direction from the receiving port 23 to the discharge port 24. If the rotation distance is long as shown in the figure, there is also the disadvantage that it takes time from receiving the article to discharging it. In addition, the rotary feeder 20 has the disadvantage that it cannot be used in place of the weighing hopper 1 because it does not have a distribution function. This invention provides an article storage and discharge device that can improve the above-mentioned drawbacks.
The purpose is to supply article weighing devices and combination weighing devices.

[Means to solve the problem]

An article storage and discharge device according to the present invention includes a container having a plurality of partition walls forming a plurality of storage chambers for storing articles, a rotation drive means for rotating the container, and a receiver for receiving the articles in the container. In an article storage and discharge device comprising a guide F portion that covers at least a portion of the outer periphery to form an inlet and a discharge port for discharging the stored articles, the partition wall of the storage body is a portion extending radially from the center of rotation. and the accommodation chamber has an opening in a radial direction with respect to the rotation center, and the articles accommodated in the accommodation body are sorted in a plurality of different directions by the rotational driving means. It is characterized by Further, the article weighing device according to the present invention includes a container having a plurality of partition walls extending radially from a central position to form a plurality of storage chambers for storing articles, and a rotation drive means for rotating the container. and a guide portion that covers at least a part of the outer periphery in order to form an inlet for receiving the article in the container and a discharge port for discharging the stored article, and a partition wall of the container is provided with a center of rotation. The storage chamber has an opening in a radial direction with respect to the rotation center, and the storage chamber, the guide portion, and the article stored in the storage chamber have a portion extending radially from the storage chamber. It is characterized by comprising a measuring device for measuring the weight of. Further, the article weighing device according to the present invention is characterized in that the weighing device measures the weight of the articles stored in the plurality of storage chambers using a single weighing device. Further, the combination weighing device according to the present invention includes a plurality of article storage/discharge devices that temporarily store and discharge input articles, and a plurality of article storage/discharge devices that respectively receive and weigh articles discharged from the plurality of article storage/discharge devices. a weighing device;
A combination weighing device comprising a combination selecting means for combining the weighing values of the articles so as to obtain the desired weight, wherein the article storage and discharge device is configured with the article storage and discharge device according to claim (1), and the weighing and discharging device comprises: The device is characterized in that it is constituted by the article weighing device according to claim (2) or (3).

[Effect]

In the article storage and discharge device according to the present invention, a storage body in which a storage chamber is formed by a plurality of partition walls is rotated by a rotational drive means.
It can be rotated clockwise or counterclockwise to eject articles in a plurality of different ejection directions. Further, an article weighing device is constructed by engaging a device having a similar configuration to this article storing and discharging device with a weighing device. When no articles are stored, the total weight of the guide section and the container is measured using a scale. When the articles are stored, the sum of the weights plus the weight of the stored articles is measured using a scale. The same applies even if there are multiple articles. If multiple items are stored one by one, the weight of the newly stored item is calculated by subtracting the weight before the item is stored from the total weight after storage. can be known. By applying the above article storage and discharge device and article weighing device to a combination weighing device, a combination weighing device that does not have the drawbacks of the conventional hopper type can be realized.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a part of the combination weighing device according to the present invention, and corresponds to FIG. 8 of the conventional example. In the figure, 30 is a boules cell as an article storage and discharge device. As shown in FIG. 2, this Boolean cell 30 includes a drum-shaped guide section 31, and inside this guide section 31,
The housing 32 is rotatably housed around the centerline position of the guide portion 31. This container 32 is
a shaft 33 disposed on the center line of the drum-shaped guide portion 31;
A plurality of partition walls radially extending straight from this axis 33, in this example three partition walls 34, spaced apart by 120 degrees.
It consists of 35.36. These three bulkheads 34.35.3
6 and the side peripheral surface of the drum-shaped guide portion 31, there are three article storage chambers 37A, 37B. 37C is formed. On the other hand, the side peripheral surface of the drum-shaped guide portion 31 is provided with an article receiving port 38 and an article discharging port 39 . The receiving port 38 stores articles into a plurality of storage chambers 37A and 37B. 37C as an aperture with an angular extent of less than 120 degrees. In addition, the discharge port 3
First, as shown in FIG. 2, when one storage chamber is exactly facing the intake port 38, the other two storage chambers are opposite to the discharge port 39, so that an angle of 120 degrees or more is formed. Formed as a range opening. Further, the shaft 33 of the container 32 passes through the drum-shaped guide portion 31 and is rotatably supported by the drum-shaped guide 31 . The Boolean cell 30 is removably attached to the housing 100 of the combination weighing device with the receiving port 38 facing upward, as shown in the figure. For this reason, an engaging member 41 having a locking rod-like body 41A is attached to the drum-shaped guide portion 31 of the Boolean cell 30, and an engaging member 41 having a locking rod-like body 41A is attached to the housing 100. A locking portion 101 having a matching groove is attached. Then, as shown in the cross-sectional view of FIG.
The end of No. 2 protruding toward the housing 100 is connected to the motor 5 provided in the housing 100 via, for example, an Oldham joint 42.
It is connected to the rotation shaft of 1. The container 32 accommodates this motor 5
1, intermittent rotational movement is performed in the clockwise and counterclockwise directions at a predetermined pitch. Further, 60 is a weighing cell which integrally connects, for example, two cell bodies 61.62 having exactly the same configuration as the boule cell 30, and articles to be discharged from the boule cell 3o. The cell body 61.6
It consists of a distribution guide part 63 that separates the distribution so as to guide it to one of the two. The cell bodies 61 and 62 each have a drum-shaped guide portion 611.
, 621 and containers 612, 62 provided therein.
It consists of 2. 613 and 623 are containers 612 respectively
, 622 rotating wheels. In this case, the drum-shaped guide portions 611, 621 and the distribution guide portion 63 may be configured integrally, or the cell bodies 61, 62 having the same configuration as the Boolean cell 3o may be connected via the distribution guide 63. They may also be connected. Further, the drum-shaped guide portion 611.6 of the cell body 61.62
21 is provided with an inlet 614, 624 and an outlet 615, 625 for the article. And reception port 6
14, 624 is below the discharge port 39 of the Boolean cell 30, and the weighing cell 60 is attached to the weighing device 55 in the housing 100 so as to be able to perform measurements. That is, as shown in the cross-sectional view of FIG.
1 is attached, while the weighing cell 6
0 is provided with an engaging member 64 having a rod-shaped body 64A similar to the engaging member 41 of the Boolean cell 3°. 64
A is fitted so that the weighing cell 6o is attached to the wall portion 71. The rotating shaft of the motor 52 passes through this wall portion 71 and is connected to the rotating shaft 613 of the cell body 61 via an Oldham joint 616, and the motor 52 causes the housing body 612 of the cell body 61 to undergo intermittent rotational movement. I am made to do so. Similarly, the rotating ring 623 of the cell body 62 is connected to the rotating shaft of a motor 53 (not shown) provided in the housing 100 via an Oldham joint, and the motor 53 intermittently rotates the housing body 622 of the cell body 62. Allows rotational movement. In this example, the motors 52 and 53 will be fixed to the wall 71, and the weighing device 7o will accommodate the weight of the weighing cell 60, the weight of the motors 52 and 53, and the weight within the cell body 61.62. The sum of the weight and the weight of the stored items will be measured. The motors 52, 53 and the weighing cell 60 are connected via an Oldham joint, and the connection can be released by moving the motor position in the axial direction. It is also possible to release the connection by the joint so that the motors 52 and 53 are not included in the weight to be measured. Boolean cell 3o and weighing cell 6 configured as above
The operations from loading, weighing, and discharging articles for combination will be described below with reference to FIG. 4. First, articles sent by a vibrating feeder (not shown) provided on the upper surface of the housing 100 of the combination weighing device are transferred from the receiving port 38 to a storage chamber 37A of the Libour cell 3°, for example.
be accommodated in. Next, the container 32 of the Boolean cell 3o is moved 120 clockwise or counterclockwise by the motor 51 so that the article is dropped into any empty cell body of the weighing cell 60.
Rotated degrees. If the cell body 61 side is currently vacant, the container 32 of the pool cell 30 is rotated 120 degrees clockwise by the motor 51, and the articles are discharged from the right side of the discharge port 39. The discharged items are sorted into the sorting guide section 6
3 and are introduced into the storage chamber in the recell body 61 through the receiving port 614 of the cell body 61. Then, the weighing device 70 calculates the sum Tゎ-1 of the weight of the weighing cell 60, the motors 52, 53, and the articles previously loaded into the cell body 62, as described above.
, and the sum T obtained by adding the weight of the article newly accommodated in the weighing cell 60. Weigh. The measured value of the weighing device 70 is transmitted to a calculation means consisting of, for example, a microprocessor, and the calculation means detects the weight of the newly introduced article as Tn-, -T. After this weighing and measurement, the cell container containing the articles of the weights participating in the combination is rotated 120 degrees clockwise or counterclockwise by a motor, and the articles are ejected and dropped, for example, into a collection chute. be done. Immediately after this, a new article is discharged from the pool cell 30 to the empty cell body, the article is stored in the cell body, and its weight is measured. The same cycle is then repeated. The time required for one cycle as described above is compared with that of the conventional hopper type as follows. (Hopper type) Combination calculation 0.3sec Weighing hopper open (article falling) 0.3sec Weighing hopper closed
0.3sec intermediate hopper open (item falling)
0.3sec input stability/weight measurement 0.4s
ec total 1. 5sec(
This example) Combination calculation weighing cell rotation (article falling) Boolean cell rotation (article falling) Input stability/weight measurement 0.3 sec O, 3 sec Q, 3 sec 0.4 sec Total 1, 3 S e C As described above, this In the case of the embodiment, unlike the hopper type, there is no need for time to close the gate, so the time for one cycle is shortened, and the number of articles to be processed can be increased. For example, in the case of a conventional hopper type, the rate can be increased from 150 pieces/minute to 180 to 200 pieces/minute. In addition, as in this embodiment, each cell body 61, 62 of the pool cell 30 and the weighing cell 60, as shown in FIG.
When they are constructed with the same structure, together with the fact that the boolean cell and the weighing cell are removable, inspection and maintenance and replacement of the cell timing of the pool cell and the weighing cell become easier. Furthermore, since the same parts can be used, there is also the advantage that the device can be manufactured at low cost. Note that the above example is a case where the weighing cell 60 is provided with two cell bodies similar to the pool cell 30, but as shown in FIG. 5, the weighing cell 60 may also have one cell body. Ru. In this case, the cell body of the weighing cell 60 is installed so that the discharge port side serves as a receiving port, and the receiving port side serves as a discharge port, and a guide 81 for preventing articles from falling is provided between the pool cell 30 and the weighing cell 60. will be established. Then, the articles are sorted from the pool cell 30 and dropped into the empty storage chamber of the weighing cell 60. In this case, the weight of the article accommodated in the weighing cell 60 can be measured in the same manner as described above. Then, the pool cell 3 determines which storage chamber, the right side or the left side of the weighing cell 60, is the newly accommodated one.
The rotation direction is detected based on the rotation direction of 0, and the storage chamber containing the weight of the articles participating in the combination is rotated 120 degrees so that it comes to the discharge port. Although the drum-shaped guide portion 31 of the pool cell 30 in the above example is provided with one discharge port 39 extending over an angular range of 120 degrees or more, it may be divided into two discharge ports as shown in FIG. . Guide portion 611 of cell body 61, 62 of weighing cell 60,
The same applies to 621. Furthermore, the housing body 32 may have a housing chamber formed in a cup shape, as shown in FIG. Furthermore, the cell bodies of the pool cell and the weighing cell may be configured to have three or more storage chambers.

【Effect of the invention】

As described above, according to the present invention, there is provided an article storage/discharge device and an article weighing device that can sort and discharge received and housed articles using a rotation method. Since it is a rotary type, there is no need to open and close the gate as in the conventional hopper type, allowing for faster speeds. Furthermore, since a gate opening/closing drive mechanism is not required, the number of articles is reduced and costs are reduced. Furthermore, since it is a rotary type, there is no noise generated during the opening and closing operations of the hopper type. Therefore, if these article storing and discharging devices and article weighing devices are used in a combination weighing device, it is possible to provide a combination weighing device that has a high processing speed, is quiet, and is inexpensive, which has a significant practical effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the main part of the combination weighing device according to the present invention, Fig. 2 is a diagram for explaining a part thereof, Fig. 3 is a sectional view of the example shown in Fig. 1, and Fig. 4 is an explanatory diagram of its operation, FIGS. 5 to 7 are diagrams showing main parts of other embodiments, FIG. 8 is a perspective view of a part of the conventional combination device, and FIG. 9 is an explanation of the operation of the conventional example. FIG. 10 is a diagram for explaining a conventional opening/closing drive mechanism, and FIG. 11 is a diagram for explaining another conventional example. 30; Boule cell 31; drum-shaped guide portion 32; container 33 - shafts 34 to 36; partition walls 37A to 37C; storage chamber 38; intake port 39; discharge port 42; Oldham joint 51.52; motor 60; weighing cell 61. 62; Cell body 611.621. Guide portion 612.622; Container 613.623; Shaft 614.624; Reception port 615.625. Discharge port A old measuring device

Claims (4)

[Claims] (1) A container having a plurality of partition walls forming a plurality of storage chambers for storing articles, a rotational drive means for rotating the container, a reception opening for receiving the articles in the container, and the stored articles. In the article storage and discharge device, the partition wall of the storage body has a portion extending radially from the center of rotation, and the partition wall of the storage body has a portion extending radially from the center of rotation, and has an opening in a radial direction with respect to the rotation center, and the articles accommodated in the container are distributed and discharged in a plurality of different directions by the rotational drive means. Article storage and discharge device. (2) In order to form a plurality of storage chambers for accommodating articles, a storage body having a plurality of partition walls extending radially from a central position thereof, a rotational drive means for rotating the storage body, and a rotation drive means for rotating the storage body; and a guide portion that covers at least a portion of the outer periphery to form an inlet for receiving the article and an outlet for discharging the stored article, and the partition wall of the container has a portion extending radially from the center of rotation. In addition, the storage chamber has an opening in a radial direction with respect to the rotation center, and measures the weight of at least the storage body, the guide section, and the article stored in the storage chamber. An article weighing device comprising a weighing device. (3) The article weighing device according to claim 2, wherein the weighing device is one for measuring the weight of the articles stored in the plurality of storage chambers. (4) a plurality of article storage and discharge devices that temporarily store and discharge input articles; a plurality of weighing devices that respectively receive and weigh the articles discharged from the plurality of article storage and discharge devices; A combination weighing device comprising combination selection means for combining the weighed values of the articles so as to obtain a weight of the article, wherein the article accommodating and discharging device comprises the article accommodating and discharging device according to claim (1), and the weighing device comprises: A combination weighing device comprising the article weighing device according to claim (2) or (3).