JPH0365279A - Weight sorting machine - Google Patents

Abstract

PURPOSE:To markedly enhance working efficiency by measuring the wt. of an object during feed and operating a distribution member corresponding to the wt. class thereof after the measurement of the wt. of the object to perform sorting by each wt. class. CONSTITUTION:A harvested object such as a potato or a carrot is fed to a weighing machine 5 without lowering the feed speed during feed to measure the wt. of the object. Subsequently, the distribution member 23 corresponding to the measured wt. class is operated to perform sorting by each wt. class. By this method, measurement by wt. and sorting by wt. can be performed during a series of feeds and working efficiency can be markedly enhanced. Further, the increase and decrease alternation of the number of classifications of a wt. class can be easily performed and the alternation of a working place or storing work are made highly convenient.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention uses WaS for processing harvested potatoes, carrots, etc.
This invention relates to a weight sorting machine that sorts by class.

"Prior art" For example, Japanese Patent Publication No. 1-29263 discloses that a part of a single conveyor system is provided with a material measuring device and a pair of capacitance measuring devices, and a sorting device is provided on the discharge side to remove foreign matter and There is a means for sorting out defective products.

``Problems to be solved by the invention'' However, in the case of the above-mentioned conventional means, not only is it not possible to distribute by weight class, but since it uses a single conveyor system, the length and length of the supply conveyance path and the distribution conveyance path can be changed freely. In addition, it was not possible to do so, and it also had disadvantages in terms of maintenance and inspection and layout.

"Means for Solving the Problem" Therefore, the present invention provides a conveying and supplying means for conveying and supplying an object, a conveying and measuring means for measuring the weight of the supplied object while conveying it, and an object after this measurement. a transport sorting means for distributing objects by weight class using a sorting member during transport; the transport supply means is provided with a passage sensor for detecting the passage of the object; A confirmation sensor for detecting passage of the object is provided, and the weight measurement by the conveyance measuring means is performed by a set timing operation after the detection of the passing sensor, and by a timing operation set for each weight class after the confirmation sensor is detected. The apparatus is configured to operate the sorting member to sort objects by weight.

"Function" According to the present invention, the weight of objects such as harvested potatoes and carrots can be measured extremely efficiently during transport without reducing the transport speed, and the weight measurement can be performed after this weight measurement. It is possible to sort by weight class by accurately operating the sorting member according to the weight class. Therefore, it is possible to measure and sort by weight during a series of conveyances, significantly improving work efficiency. Moreover, it is easy to increase or decrease the number of weight class classifications.
This is convenient for changing work locations and storing work.

``Example'' An example of the present invention will be described in detail below based on the drawings. 1st
The figure is an overall side view, and Figure 2 is a plan view of the weight sorting machine. In the figure, m is a manual sorting conveyor that separates and removes potatoes that are greener than the harvested potatoes, rotten potatoes, and stones, (2)
(3) is a soil-removal brush conveyor that removes soil from hand-sorted potatoes; (3) is a feeder conveyor that sends out one of the potatoes supplied from the conveyor (2);
4) is a separating conveyor which is a conveying/supplying means for separating and supplying potatoes from the conveyor (3) at approximately regular intervals, and (5) is the weight of each potato supplied from the conveyor (4). (6) is a conveyance measuring means that measures the potatoes while conveying them, and (6) is a sorting conveyor that is a conveying and sorting means that distributes the potatoes by weight class after the weight has been measured by the weighing machine (5). conveyor (
1) (21(3)) (In step 41(6), the potatoes are weighed while being transported, and after this overlapping measurement, they are taken out into boxes and containers (7) according to weight class.

As shown in FIGS. 6 and 7, the feeder conveyor (
3) The upper conveying surface is formed to have a V-shaped cross section, and the conveying surface is formed into a resistive positive image (3a) having unevenness, and the pie break mechanism (8) is used to generate vibrations in the resistive positive image (3a). The potatoes (A) are sent out one by one to the separating conveyor (4) from the transfer outlet (3b) of the intermediate sandwicher TT (transfer terminal) which is the end of the feed.

Further, the separation conveyor (4) is provided with a photoelectric type light emitting and light receiving sensor (9al (9b)) which is a pair of passing sensors (9) for detecting the passage of potatoes (Al) on the feed start end side. ) detects the passage of potato (A). It changes from on to off and the potato (A) changes from on to off.
The measuring device (5) is configured to start measuring operation after a certain period of time until Al reaches a substantially central position of the weighing device (5).

As shown in FIGS. 3 and 4, the weighing machine (5) includes a conveyor (10) and a drive mechanism section (12) that drives the conveyor (10) by a geared motor (11) or the like.
The conveyor (1O), drive mechanism section (2), and side guide plate (13) are integrally suspended via a support (14) and a vibration isolating rubber body (15) to measure weight. 16), and while the potatoes + A) are being conveyed by the conveyor (lO), the potatoes (A)
It is configured to measure the weight of.

As shown in FIG. 5, on the feed start end side of the sorting conveyor (6), there is a pair of photoelectric light-emitting and light-receiving sensors (17) that detect the passage of potatoes (A) after weight measurement. 17al (17b), and six classes of take-out ports f18al (17b) for taking out potatoes (Al) according to weight class on both left and right sides of the middle part of the conveyor (6).
18bl (18c) (18d) (18e) (1
8 fl is opened, and these outlets (18a) to (18 fl
Opening/closing shutters (20) are provided at the tips of inclined take-out chutes (19) arranged on the left and right outer sides of the
21).

Further, there are outlet ports (18a) (18b) located above the conveyor belt (6a) of the conveyor (6) and facing left and right.
・(18cl (18dl) ・(18el (18f) Sorting member (2) having four scraping plates (22) approximately in the center
3), the rotating shaft (24) of the distribution member (23) is operatively connected to the first output shaft (25a) of the pulse type discharge motor (25) via an elastic coupling (26), and the A cross-shaped rotation regulating plate (27) that regulates the amount of rotation per operation of the distribution member (23) by the motor (25).
is interlocked and connected to the second output shaft (25b) of the motor (25), and the motor (25) drives the distribution member (23).
When the proximity switch (28) detects that the regulation plate (27) has rotated 90 degrees in the forward or reverse direction, the proximity switch (28) stops its drive, and removes the potatoes (Al) by the sorting member (23). It is configured to do this.

Furthermore, left and right frames (29) that support the sorting member (23), motor (25), etc. on the conveyor table (28) are provided.
) is provided with a switch box (30) at the upper end thereof, and when a predetermined weight of potatoes (Al) is stored in the box container (7) and the shutter (20) is closed,
While the alarm lamp (31) provided at the upper end of the switch box (30) at the positions of the outlet (18al to (18f)) is blinked, the box container (7) is replaced with a new empty container and can be taken out again. Time switch box (3
Push button type shutter switch (32) installed in 0)
This outlet (18al~T
18f) is configured to open the shutter (20).

By the way, as shown in FIG. 8, the sensor (9) (17
) and the switch (2B) (32) are connected to the control circuit (33).
5) and a warning lamp (31) are connected as outputs.

The present embodiment is constructed as described above, and its operation will be explained below with reference to the flowchart of FIG. 9. First, prior to the start of work, the accumulated weight values for each class that have been stored up to that point are canceled, and from then on the separation conveyor (4)
Each time a potato (A) passes through the passing sensor (9) position, it is detected.
passes through the sensor (9), that is, the sensor (9) changes from ON detecting the potato (A) to OFF not detecting the potato (A), and after a certain period of time has passed (the potato (A) is at the weight measurement position from the sensor (9) The weight of this potato (A) is measured at the time when the potato (A) is moved to . After this weight measurement, the sensor (17) confirms that the potato (Al) has passed the confirmation sensor (17) position of the sorting conveyor (6).
is detected (from on to off), enter this measured weight value and select the weight class outlet f18a) corresponding to this weight value.
-f18f) and set the outlet (18a) to (18
The sensor (17) corresponding to the transport time to the f1 position
After a certain period of time has elapsed from the time of passing, the motor (25) is driven forward or backward to rotate the distribution member (23) by 90 degrees forward or backward to take it out into a desired weight container (7). The total weight taken out is calculated for each weight class. At this time, one outlet f18al~(1
Potatoes (Al
When the total weight of the
The shutters (20) at 8al-(18fl) are closed, and the lamps (31) of the switch boxes (30) at the outlet ports 118a)-(18f) are blinked to notify the operator of this. After that, when the full container (7) is replaced with a new empty container (7) and the switch (32) is turned on, the closed outlet ports (18a) to (
The shutter (20) of 18f) is opened again, and
The weight integrated values of the outlet ports (18a) to (18f) are canceled and the same operations as described above are repeated thereafter.

On the other hand, after the overlapping measurement in the weighing machine (5), it must be detected that the measured potato (A) passes the confirmation sensor (17) position (even in this case, it must be detected that the measured potato (A) passes the confirmation sensor (9) position). If this detection is not performed despite the conveyance time during which the potato (A) is conveyed to the confirmation sensor (17) position after passing through the Assignment does not take any action. Note that this flowchart is shown as being executed sequentially for the sake of explanation, but in reality, operations (weight detection, distribution member operation, etc.) may wait for a certain amount of time. Without,
This is done using a timer interrupt.

In addition, the shutter opening/closing control is handled by interrupts rather than waiting for the shutter opening switch to be turned on.

In this way, each conveyor +31 F41 f61 (10
Since weight measurement is performed during the conveyance of a series of potatoes [A] according to No. 1, and distribution by weight class is performed based on the weight measurement, it is possible to significantly improve work efficiency.

In the above-mentioned embodiment, the number of scraping plates (22) of the distribution member (23) was 4, but it may be any number, such as 6 (in addition, in the above-mentioned embodiment, the number of scraping plates (22) of the distribution member (23), the space through which the potatoes (Al) pass is slightly eccentric with respect to the center line of the conveyor belt (6a), but as shown in FIG. Approximately the center line of area (23a) (
The center of the conveyor belt (6al(7)) may be aligned with the center of the box container (7).
6), the structure is shown in which they are arranged on both the left and right sides with respect to the feeding direction, but as shown in FIG.
The removal direction by the 9bl may be concentrated on either the left or right side, or the box container (7) may be arranged in an inclined manner as shown in FIG. It may be configured so that it can be stored in a distributed manner.

Further, as shown in FIG. 13, the feeder conveyor (3
) between the conveyance exit part (3b) of the separating conveyor (4) and the feed start end of the separating conveyor (4), a left and right guide (3c) or an upper guide roll may be provided to regulate the conveyance position of the potatoes fA) to approximately the center position on the left and right sides. Alternatively, the belt may have a V- or U-shaped cross section with a concave center feeding surface of the belt of the separating conveyor (4).

``Effects of the Invention'' As is clear from the above embodiments, the present invention comprises a conveying and supplying means (4) for conveying and supplying an object, and a conveying and measuring means (4) for measuring the weight of the supplied object while conveying it. 5), and a transport sorting means (6) for distributing the measured objects according to weight class by means of a transport distribution member (23), and the transport supply means (6) is provided with a means for transporting and distributing the objects. A passage sensor (9) is provided to detect the passage, and the conveyance sorting means (6) is provided.
) is a confirmation sensor (
17) is provided, and the weight measurement in the conveyance measuring means (5) is performed by a set timing operation after detection by the passage sensor (9), and a timing operation is set for each weight class after detection by the confirmation sensor (17). Therefore, since the distribution member (23) is operated to sort the objects by weight, the conveyance speed of the harvested objects TA) such as potatoes and carrots is controlled during transportation. In addition to being able to measure weight extremely efficiently without reducing the weight, after this weight measurement, sorting by weight class can be performed by accurately operating the sorting member (23) according to the weight class. Therefore, during a series of transportation, measurements by weight,
Sorting by weight can significantly improve work efficiency, and it also has remarkable effects such as increasing or decreasing the number of classifications in weight classes, changing the work place, and conveniently performing maintenance inspections.

[Brief explanation of drawings]

Fig. 1 is an explanatory side view of the whole, Fig. 2 is an explanatory plan view of the weight sorter, Fig. 3 is a side view of the same part, Fig. 4 is an explanatory view of the weighing machine section, and Fig. 5 is an explanatory diagram of the sorting mechanism. FIG. 6 is an explanatory diagram of the feeder conveyor section, FIG. 7 is a plan explanatory diagram of the entire conveyor, FIG. 8 is a control circuit diagram, FIG. 9 is a flowchart, and FIGS. 10 to 13 are other diagrams. FIG. 7 is an explanatory diagram showing an example of a modified structure. 4)... Separation conveyor (conveyance supply means) 5)...
- Weighing machine (conveyance measuring means) 6)... Sorting conveyor (conveyance sorting means) 9)...
Passage sensor 17)...Confirmation sensor 23)...Distribution member

Claims (1)

[Claims] a conveying and supplying means for conveying and supplying the object; a conveying and measuring means for measuring the weight of the supplied object while conveying;
a conveying and distributing means for distributing the measured objects according to weight class by a distributing member during conveyance; the conveying and supplying means is provided with a passage sensor for detecting the conveyance passage of the object; and the conveying and distributing means A confirmation sensor is provided for detecting passage of the object after weight measurement, and the weight measurement by the conveyance measuring means is performed by a set timing operation after the detection of the confirmation sensor, and the weight measurement is set for each weight class after detection of the confirmation sensor. 1. A weight sorting machine, characterized in that said sorting member is operated with a timing operation to sort objects by weight.