KR102387478B1 - Solting machine by turn table - Google Patents

Abstract

In the electronic checkweigher for weighing and sorting sorted items using a load cell,
The present invention installs a plurality of load cells and weighing buckets on the outside of a circular rotating plate that rotates infinitely, a slip ring (Slipring = Collector ring) is provided at the lower part of the circular rotating plate, and a local PLC is installed on the upper part of the circular rotating plate to provide an electronic checkweigher that rotates at a constant speed while communicating with the main PLC and performing a uniform circular motion.
It relates to an electronic checkweigher rotating at a constant speed that provides a discharging technology in which a weighing bucket rotating at a constant speed reaches the discharging section and automatically drops the sorted items without power and automatically to a transfer conveyor.

Description

Electronic checkweigher that measures the weight by rotating the weighing bucket at constant speed {SOLTING MACHINE BY TURN TABLE}

Electronic Checkweigher, Electronic Checkweigher

Republic of Korea Patent Registration No. 10-1555807 (electronic checkweigher without sensor conveyor) is a prior art registered by the present applicant and consists of a supply unit, a transport unit, a metering unit, a servo system, a transfer conveyor, and a discharge device. The ultra-light weighing plate is fixedly coupled to the upper side of the load cell and rotates and rotates and stops at the moment when the sorted item placed between the scrapers during split rotation stops on the weighing plate during intermittent movement, and then drops to the transfer conveyor. It is a sorting device that allows the sorting articles to be transported on the transport conveyor after a certain period of time has elapsed and are stored in the storage bin by the ejection device at the ejection point corresponding to the set value.

Republic of Korea Patent No. 10-1555807 technology is installed on the ship in an offshore cage farm, even if rolling and pitching by waves is applied, the performance of measuring the weight of selected items such as abalone relatively accurately there was.

However, if foreign substances such as small abalone or cut abalone shells get caught because there are gaps between the intermittent rotational transfer scraper and the fixed circular bottom plate, between the circular bottom plate and the measuring plate, or between the measuring plate and the measuring plate (1) ) There was a problem in that accidents in which the operation of the machine was stopped frequently occurred ,

When the transfer scraper rotates for only one cycle and then temporarily stops, the abalone arriving at the weighing plate slides due to the flesh due to the generated inertia force and moves back and forth between the scraper or is measured while swaying due to the round shell. (2) Inaccurate weight measurement There was a problem with this, and since time is needed for a stable landing of the abalone, the time required per cycle (processing time) had to be increased.

In other words, each animal had to be given at least 0.6 seconds to achieve the desired precision in the market and to satisfy the processing speed of 5,000 to 6,000 rice per hour. /hr Next (3) There was a problem that it was difficult to enter the market unless the processing speed became faster .

In order to solve this problem, the present invention has been devised

The present invention installs a plurality of load cells and weighing buckets on the outside of a circular rotating plate that rotates infinitely, but evenly distributed over 360° at equal intervals, and a slip ring (Slipring = Collector ring) at the lower part of the circular rotating plate. Provided, an electronic checkweigher that rotates at a constant speed for circular motion while communicating with the main PLC by installing a local PLC on the upper part of the circular rotary plate,

When the weighing buckets rotating at a constant speed reach the discharge section, it provides a discharging technology that automatically drops the sorted items stored in an incline without the use of a separate power source to the transfer conveyor.

If the present invention is applied to the job site for abalone sorting on board,

Since the weight is not measured at the moment of temporary stop while rotating, but weight is measured while being stably placed on the bucket, the sorted items on the bucket are rotating, but it is like placing an abalone on a stationary electronic scale. High-precision weighing with almost the same effect as weighing by placing it is possible .

At the same time, accuracy is maintained, and since buckets loaded with sorted items do not have to stop and start again to weigh (because they continue at a constant speed), processing speed can be significantly increased, allowing two operators to weigh with both hands. A processing speed of 0.3 sec/1 microsecond, which is the limit of the quantity that can be diligently put in a bucket, becomes possible .

This has the effect of shortening the sorting time of the conventional analog abalone sorter that took 5 hours when the maximum daily work amount is 72,000 rice/hr and 8,000/hr to 3 hours and 20 minutes, increasing the freshness and marketability of abalone and increasing income. will have the effect of

Since the abalone placed on the bucket rotates while it is placed on it, it is lifted up and dropped at an angle, so there is no jamming accident that stops the machine operation, increasing productivity.

According to the present invention, if there is no mechanical trouble and accurate measurement technology is applied, the effect of improving the distribution structure can be expected in that the dispute between the producer who ships the abalone and the distributor who will take over the abalone disappears.

1 is a front view of a checkweigher according to the present invention;
Figure 2 is a plan view of Figure 1
3 is a plan view illustrating a working section of a circular rotating plate;
4 is a cross-sectional view illustrating the structure of a circular rotating plate;
5 is a detailed exploded view of FIG. 4
Figure 5a is an enlarged view of the upper part of Figure 5;
Figure 5b is an enlarged view of the lower part of Figure 5;
Figure 5c is a cross-sectional view showing another embodiment of Figure 5;
6 is an exploded view of the weighing bucket in FIG. 5;
Figure 6a is a perspective view showing another embodiment of Figure 6;
7 is a design diagram of an automatic discharge device to be installed in the discharge section;
8 is a discharge guide to be manufactured by FIG. 7
Figure 8a is a perspective view of Figure 8 for showing the trajectory of the lifting bolt
9 is a cross-sectional view showing another embodiment of the landing suit shown in FIGS. 3 to 4
10 is a perspective view of FIG. 9
11 is an explanatory diagram of the principle of a scraper in a discharge device according to the present invention for pushing and dropping a sorted article from a conveyor
12 is an explanatory diagram of the scraper principle among the discharge devices by the conventional sorters for pulling and dropping of FIG.
13 is an explanatory view showing that scrapers are arranged side by side among the conventional discharging device;
14 is an explanatory view showing that the scraper according to the present invention is arranged in a zigzag
15 is an explanatory diagram for an embodiment showing that the circular rotating plate is manufactured as a separate frame and operates in connection with the side of the frame

Typically, an electronic checkweigher is provided with a sensor conveyor that is provided with a belt between the head pulley and the tail pulley and repeats infinite rotation, and the weight of the sorted article placed on the upper surface of the belt is measured as it passes through the belt surface, and the measured sorted article is After moving to the discharge conveyor, it has a structure to fall into the lower storage bin by the discharge scraper at the position corresponding to the set value and classify it,

As another structure, Korean Patent Registration No. 10-1555807 (electronic checkweigher without sensor conveyor) shows that the sorting article inserted between several rotating scrapers moves sequentially as an intermittent rotational motion of the scraper, and then after the rotational motion. In contrast to the structure in which the weight is measured while stopping for a while before rotating again,

The present invention installs a plurality of load cells 100 (Load-cell) on which a weighing bucket 200 (Bucket) is placed on the outside of a circular rotating plate 300 that rotates infinitely at a constant speed, but evenly distributed over 360° at equal intervals. install,

A slip ring 400 (Slipring = Collector ring) integrally coupled to the circular rotation plate 300 is provided at the lower portion of the circular rotation plate 300, and the lower portion of the slip ring 400 is processed to the inner diameter of the center of the slip ring 400 A reduction motor shaft 91 to be fitted into the hole is provided, and the lower portion of the reduction motor 90 housing the reduction motor shaft 91 therein is integrally coupled with the reduction motor 90 by an encoder bracket 111 and the encoder 110 and the encoder 110 and the reduction motor shaft 91 are coupled by a coupling 120 so that the circular rotation plate 300 is a reduction motor 90 and a reduction motor shaft 91 ) as a power source to rotate,

A local PLC 500 and a PLC output card 502 are installed on the upper portion of the circular rotating plate 300 to communicate with the main PLC (not shown) in the control box 50 provided on one side of the frame 10 . The load cells 100, the weighing buckets 200, the circular rotating plate 300, the slip ring 400, the reduction motor shaft 91, and the encoder 110 form one body as an integral body to perform a uniform circular motion (等速). To provide an electronic checkweigher that rotates at a constant speed while

At this time, when the weighing bucket 200 rotating at a constant speed reaches the discharging section “C”, the electronic checkweigher rotating at a constant speed provides a discharging technology that automatically drops the sorted items stored therein to the transfer conveyor 600 without power. It will be described in more detail with reference to the drawings below.

The sorted article is placed on the weighing bucket 200 in the input section (“A”) of the rotation measuring unit 20 provided on one side of the frame 10, rotates while being placed, and weighs in the weighing section (“B”) After being measured, the sorted goods that have reached the point set by the servo system in the control box 50 while falling to the upper surface of the transfer conveyor 600 and moving the scraper 30- 1) falls under the conveying conveyor 600 and is classified by weight in the storage 60 bin, and the scraper 30-1 is a scraper shaft by linear reciprocating motion of a cylinder (not shown) of the discharge device 30 . This is a device that converts the rotary motion of the shaft and the scraper 30-1 attached to this shaft rotates, so that the sorting article moving on the upper surface of the transfer conveyor 600 is separated from the belt and dropped. This device is in the field of electronic checkweighers As a well-known technique, a more detailed description is omitted, and in the present invention, the rotation measuring unit 20, which is a characteristic of the present invention, will be described in detail.

The configuration of the rotation measuring unit 20 according to the present invention is as follows.

The frame 10 made of a pair of plate-shaped metal materials includes a base plate 70 fixedly coupled to the frame 10 on one side of the upper portion of the frame 10 , and a reduction motor is located below the base plate 70 . A setting plate 81 is provided, and the reduction motor 90 is fixedly coupled to the lower side of the reduction motor setting plate 81, and the reduction motor setting plate 81 is connected to the frame by the reduction motor setting hole 80. 10) is fixedly coupled with bolts, etc.

On the other hand, a slip ring 400 is provided on the upper side of the reduction motor 90, that is, on the upper side of the reduction motor setting plate 81. The inner diameter machined at the center of the slip ring 400 is the reduction motor shaft 91. It is fitted into the outer diameter of the slip ring 400 and the reduction motor shaft 91 are integrally fixedly coupled by a method such as inserting a mood wrench 401 into a machining hole provided on one side of the lower end of the slip ring 400 .

The slip ring 400 rotates while a plurality of metal rings 400-1 are coupled to each other in layers in the vertical direction, and in a plurality of fixed brush holders 402 corresponding to each metal ring 400-1. This is an electrical connector in which current is transmitted to each metal ring 400-1 when current is passed, and as a result, current is transmitted to each screw portion 403 protruding above the rotating slip ring 400, which is a known technology. A more detailed description will be omitted.

The number of the metal rings 400 - 1 , that is, the number of the protruding screw parts 403 , that is, the number of the brush holders 402 may be different depending on the use and configuration of the selector.

For example, when the motor mounted on the sorting device according to the present invention is AC, it includes two power lines and includes a ground wire, and a total of eight can be selected. When the motor is DC, the DC power supply line is omitted. It can be a total of 6, and if you omit the grounding wire at this time, it can be a total of 5.

However, in the present invention, the number of metal rings 400-1 is shown and described as seven.

The circular rotating plate 300 is fixedly coupled to the upper portion of the slip ring 400 while being in close contact with it.

The number of threaded parts 403 protruding upwards of the slip ring 400 is 7 in total, and the circular rotating plate 300 concentric with the slip ring 400 is machined at positions corresponding to the 7 threaded parts 403 . A hole is provided so that the circular rotating plate 300 is fitted on the protruding threaded part 403 and then the circular rotating plate 300 and the protruding threaded part 403 are integrally fixedly coupled as a nut.

That is, the reduction motor shaft 91, the coupling 120, the encoder 110, the slip ring 400, and the circular rotary plate 300 are concentrically rotated as one body, but the base plate 70 ) The 7 electric wires 120 and the current added to the 7 fixed brush holder 402 fixedly coupled to one side are the 7 threaded parts 403 or threaded parts protruding upward from the rotating circular rotating plate 300 ( 403) is being delivered to a nut (not shown) for tightening.

At this time, it is natural that the first to seventh electric wires from the bottom to the top of the fixed brush holder 402 are separately connected to the seven screw parts 403 at specific positions.

A local PLC fixing bracket 501 is fixedly coupled to the upper portion of the circular rotating plate 300, and the local PLC 500 and the PLC output card 502 are integrally formed on one side of the local PLC fixing bracket 501. fixedly coupled

In addition, a plurality of (shown and described as 20 in the present invention) load cells 100 and weighing buckets 200 are provided on the outer side of the circular rotating plate 300, distributed throughout 360° at equal intervals, for example, 20 load cells ( 100), respectively, by using the through hole 31 provided on one side of the circular rotating plate 300, the electric wire goes down to the lower part of the circular rotating plate 300, is hung by the electric wire hanger 32, and is arranged and then passes through the hole again ( 31) to a position close to the local PLC fixing bracket 501, which is an enclosed space, and is connected to a designated position of the PLC output card 502.

However, of course, the electric wires of the load cell 100 may be directly connected to a designated position of the PLC output card 502 on the upper surface of the circular rotating plate 300 .

The PLC output card 502 in the present invention uses two channels, and since there are 20 load cells 100 , a total of 10 PLC output cards 502 are continuously coupled to the local PLC 500 as an integral type.

The local PLC 500 is connected to the 7 electric wires required to communicate with the main PLC (not shown) built in the control box 50 is as follows.

(1) The three lines are communication lines between the rotating local PLC 500 and the fixed main PLC (not shown), and typically connect the RX, TX, and SG points through the slip ring 400 .

(2) The two lines are electric lines for supplying a DC current of 24V from the power supply (not shown) built in the control box 50 to the local PLC 500 through the slip ring 400 .

(3) The two wires are electric wires for supplying AC current to the local PLC.

In this way, the electronic components including the main PLC (not shown) and the power supply (not shown) and all electrical devices are fixed in the control box 50, and the load cell 100 necessary for measuring the weight, Only the local PLC 500 and the PLC output card 502 are integrally fixedly coupled to the upper side of the circular rotation plate 300 and rotate at the same time as the circular rotation plate 300, but the local PLC 500 requires current even during rotation. to receive a stable supply.

In the present invention, it is assumed that the reduction motor 90 is AC, but is not limited thereto. That is, the reduction motor 90 may be operated by applying a DC motor and connected to a 24V battery. can occur

The local PLC 500 and the local PLC fixing bracket 501 to which the PLC output card 502 is attached are placed on the upper side of the circular rotating plate 300 and accommodated in a space sealed by the protective cover 41 .

The protective cover 41 may be made of any shape and material, but in the present invention, it will be described as being composed of a transparent PC plate for easy observation from the outside.

The lower outer surface of the protective cover 41 is provided with a hole-processed flange, fixed to the circular rotating plate 300 by a method such as a fixing bolt 42, and the through hole 31 through which an electric wire passes. Since they use a PG waterproof connector (not shown) (cable gland), the local PLC 500 and PLC output card 502 are not exposed to moisture even when water is cleaned with a high-pressure hose.

Figs. 4 to 5a explain this, and Fig. 5c shows another embodiment of this.

As shown in Figure 5c, the present invention is provided with a PLC housing 301 on the upper side of the circular rotating plate 300 to further facilitate the exchange of the load cell 100, and the PLC housing 301 is an upper flange 302 and A lower flange 303 is provided.

The lower flange 303 may be provided with a packing material 304 on the bottom surface, and is fixed to the circular rotating plate 300 using bolts or the like.

The upper flange 302 has a water penetration prevention wall 305 on the inner side, and has a structure on which the protective cover 41 can be covered on the outer side.

Although the fixing bolt 42 in FIG. 5A is described for the purpose of fastening the protective cover 41 and the circular rotary plate 300, the fixing bolt 42 in FIG. 5C is only fixed to the upper flange 302. The protective cover 41, not used for coupling, can be used in a simple structure that is placed on the upper flange 302, and this configuration will be a preferable structure in which the protective cover 41 can be easily attached and detached with one touch in case of emergency.

In addition, a plurality of holes are provided on the outside of the PLC container 301 and PGs 307 are installed in each hole, so that the load cell 100 line passes easily, but it has a desirable structure that can maintain waterproofing.

Meanwhile, the measurement bucket 200 will be described.

The weighing bucket 200 can use any material and shape, such as a plastic-based material that is integrally injected. do.

An upper bracket 52 having a hinge point 51 downward is provided on one side in the direction of the discharge part 71 of the weighing bucket 200, and a bucket holder 54 is provided below it, and also a hinge point below it. A lower bracket 53 having a 51 is provided so that the bucket holder 54 and the lower bracket 53 are integrally fixedly coupled to the load cell 100 by a method such as a bolt.

At this time, since the bucket holder 54 is placed on the load cell 100 while being spaced apart by the thickness of the lower bracket 53, the load cell 100 is spaced apart from the hinge point 51 without affecting the weight measurement. The metering bucket 200 in the distance is supported so that it can be leveled and is provided with an abrasion-resistant material 55 on the upper side, so that it is a desirable configuration that provides a shock absorption effect and reduces noise generation.

The upper bracket 52 and the lower bracket 53 are assembled by overlapping the hinge point 51 and provided with a coupling bolt 56 penetrating the hinge point 51, without noise even with frequent rotation, durability that does not wear out It is preferable to finish with the anti-loosening fixing nut 58 after the bush 57 (Bush) made of a wear-resistant material is inserted between the hole of the hinge point 51 and the coupling bolt 56 in order to equip it.

As a result, the weighing bucket 200 has a structure that can rotate around the hinge point 51, and when it is lifted and then descended again, it is placed on the bucket holder 54 so that it can be stopped while maintaining a horizontal or oblique slope. will become
The weighing bucket 200 that can be lifted in this way is provided with a lifting bolt 61 on one side in the opposite direction to the discharge part 71 .

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The lifting bolt 61 has a predetermined length and protrudes toward the inner direction of the weighing bucket 200, that is, toward the center of the circular rotating plate 300, and is measured by the fixing nut 63 with the wear-resistant material covered on the outside. It is fixedly coupled to the bucket 200 integrally.

6 is an exploded view of the weighing bucket 200, and FIG. 7 is a design diagram of an automatic discharge device to be installed in the discharge section.

And in the present invention, another embodiment of FIG. 6 will be described with reference to FIG. 6A.

The metering bucket 200 may be made in plurality as shown in (200a), (200b), and (200c), and the lower bracket 53 may be assembled to the lower side instead of the upper side of the load cell 100. At this time, the lower Since the bracket 53 has a predetermined height, when bending is not easy, the lower bracket 53 can be divided into one piece of the lower bracket 53a and configured at the lower side through the connection base plate 53b. All in one unit and can be assembled at once.

The present invention provides a discharging technique in which the weighing bucket 200 reaches the discharging section ("C") and automatically drops the sorted items stored therein to the transfer conveyor 600 without power, which is shown in Figs. 7, 8 and 8a. cast Watch and explain in detail.

The weighing bucket 200 can be lifted by, for example, 8 steps of 5° increments, up to a total of 40°.

At this time, the abscissa 701 for each angle at which the lifting bolt 61 should be lifted can be obtained, and the ordinate 702 for each time to be lifted can be obtained. The metering bucket discharge curve 709 is the method shown in FIG. 7 , and FIG. 8 is the shape of the discharge guide to be manufactured by FIG. 7 .

The upper guide plate 703 and the lower guide plate 704 are respectively disposed on the upper side of the space portion 708 while the space portion 708 is provided along the discharge curve 709 generated in FIG. 7 . provided

' 모양의 상부 및 하부 가이드판(703,704)은 배출구간(“C”)에 설치되며, 상부 가이드판(703)과 하부 가이드판(704) 사이에 구비된 공간부(708)의 궤적을 따라 계량 버킷(200)의 들림볼트(61)가 “IN” 방향에서 “OUT” 방향으로 이동하게 되고, 이 때 계량 버킷(200)의 배출부(71)도 함께 들어올려졌다가 내려오면서 선별물품을 배출하게 된다. 상부 가이드판(703)은 상부 고정판(700)에 고정 결합하되 가이드판 삽입홀(705)이 가이드판 용접 브라켓(706)에 끼워져 내구성을 갖춘 채 상부고정판(700)과 결합되는 것이다.As shown in Figures 8 and 8a, '

' Shaped upper and lower guide plates 703 and 704 are installed in the discharge section (“C”), and along the trajectory of the space portion 708 provided between the upper guide plate 703 and the lower guide plate 704, the weighing bucket The lifting bolt 61 of 200 moves from the “IN” direction to the “OUT” direction, and at this time, the discharge part 71 of the weighing bucket 200 is also lifted up and down to discharge the sorted items. do. The upper guide plate 703 is fixedly coupled to the upper fixing plate 700 , but the guide plate insertion hole 705 is inserted into the guide plate welding bracket 706 to be coupled with the upper fixing plate 700 with durability.

The lower guide plate 704 should be configured separately by being spaced apart from the upper guide plate 703 in a state in which the space portion 708 is formed. . This is a desirable structure for fixing the guide plates 703 and 704 with durability without interference when the lifting bolt 61 passes through the space portion 708 .

The upper fixing plate 700 is supported by a plurality of pillars 801 while being spaced apart from the fixed base plate 70 by a predetermined distance.

That is, the upper guide plate 703 is fixedly coupled to the upper fixing plate 700 through a guide plate welding bracket 706, and the lower guide plate 704 is spaced apart from the upper guide plate 703 by the space portion 708. It is to be fixedly coupled by a plurality of handles (707).

' 모양의 공간부(708)를 따라 이동하면서 들어 올려졌다가 "OUT" 지점을 향해 다시 내려오면서 계량버킷(200)의 배출부(71)에 얹혀진 선별물품이 배출되게 된다.
이상의 내용을 상세히 설명하기위한 상기 들림볼트(61)들의 궤적(2000)을 나타낸 것이 도 8a 이다. Here, the weighing buckets 200 disposed on the outer side of the circular rotary plate 300 rotating using the reduction motor 90 and the reduction motor shaft 91 as a power source include an input section (“A”), a metering section ( "B"), in the automatic reset section ("D"), the upper guide plate 703, the space portion 708 and the lower guide plate 704 are not installed, so the weighing bucket 200 is Although it rotates while maintaining a horizontal or slightly oblique slope, when the discharge section ("C") is reached, the lifting bolt 61 protruding in the opposite direction of the discharge part 71 of the weighing bucket 200 is "IN" From the point '

' The sorted items placed on the discharge unit 71 of the weighing bucket 200 are discharged while being lifted while moving along the space 708 of the shape and then descending again toward the “OUT” point.
Fig. 8a shows the trajectories 2000 of the lifting bolts 61 for explaining the above in detail.

At this time, the operation of discharging the sorted items by lifting the weighing bucket 200 does not use the reduction motor 90 and the reduction motor shaft 91 as power sources, but only the lifting bolts 61 during rotation and the guide plates 703 and 704. This is done automatically and without power while making a phone call.

In the present invention, the measurement unit 20 is configured by dividing the entire 360° into four sections.

3, the work space according to the present invention in a plan view has a workbench 950 on which sorting items such as abalone are placed on the premise that the weighing bucket 200 rotates counterclockwise, and the sorting table placed on this workbench 950 The input section (“A”) for placing the item on the weighing bucket 200, the weighing section (“B”) for measuring the weight of the sorted article placed on the weighing bucket 200, and the stored sorted article The discharge section (“C”), in which the non-powered and automatic dropping toward the transfer conveyor 600 is performed, and the automatic reset section (“ D").

The input section (“A”) is a space for manually placing selected items such as abalone on the weighing bucket 200. In order to prevent abnormal placing, the upper wall of the weighing bucket 200 is located on the inner side of the weighing bucket 200. 903) is provided, and a weighing bucket outer wall 902 may be provided on the lower side of the outer surface of the weighing bucket 200.

In the weighing section (“B”), the load cells 100, the weighing buckets 200, and the circular rotary plate 300 form one body as one body and rotate at a constant speed while performing a uniform circular motion. A method of measuring abalone or selected items multiple times at the desired timing or at each desired divided angle and analyzing (processing) the data to derive accurate results is applied.

For example, if you measure several times per second and measure several times until it passes the weighing section (“B”) and determine the average value as the final value, the impact caused by rolling, pitching or triple waves will be applied to the load cell. Even if the measured values are mixed when there is an irregular shock caused by a loss or crane operation, etc., when converted to an average value, the poorly measured values are diluted and the insignificant results are reflected. In addition, various methods that can increase the accuracy of measurement may be applied, but in the present invention, it will be described as measuring three times within the measurement section (“B”). That is, one specific selected item is weighed three times, and the highest and lowest values of the measured values are discarded and the middle value is taken among the three values.

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The entire weighing section (“B”) can be configured to be a tunnel so that measurement failure does not occur due to external factors such as wind or rain. The tunnel outer wall 900 may be installed, and the tunnel inner wall 901 may be installed as the inner wall.

The sorted goods that have reached the discharge section (“C”) are discharged when the weighing bucket 200 is automatically lifted toward the transfer conveyor 600 without power and then immediately descends again.

At this time, since the rotating speed is relatively fast, the curtain 802 is located in the discharge section (“C”) in order to make the sorted goods that slide along the slope of the weighing bucket 200 to be raised and fall softly land on the transfer conveyor 600 . ) is provided to suppress abnormal discharge to advance excessively, and a pair of landing chute 803 is provided so that the sorted goods are seated on the center line of the transport conveyor 600 belt surface.

In the present invention, it has been described that the landing chute 803 is provided in order to make a smooth landing on the transfer conveyor 600, but is not limited thereto.

As shown in FIGS. 9 to 10 , a swash plate 803a may be used for a smooth landing, and a guide plate 803b may be installed on the side of the swash plate 803a to prevent the sorted articles from deviate from the track.

The swash plate 803a has attachment holes 803c on the lower left and right sides, and is fixedly coupled with the setting holes 300a provided on one side of the circular rotation plate 300 .

In addition, in the present invention, as another embodiment, the end of the discharge part 71 of the weighing bucket 200 lifted obliquely without using the landing chute 803 or the swash plate 803a is the belt surface of the transfer conveyor 600 . By configuring it close to , it is possible to directly connect the sorted items from the weighing bucket 200 to the belt surface of the conveying conveyor 600 .

In this configuration, the transport speed of the sorted goods flowing down through the landing chute 803 or the inclined plate 803a, that is, in the case of abalone, when the skin faces the floor and when the flesh faces the floor, discharge due to a significantly different coefficient of friction It will be a desirable method to optimize the separation of selected items due to the difference in speed.

The upper fixing plate 700 is made in a donor shape with a large hole formed therein along the trajectory of the measuring bucket 200, and a lid 804 is provided on the upper side of the protective cover 41 to provide a local PLC (500). And the load cell card 502 has a structure to protect it from water.

In the present invention, it has been illustrated and described as configuring the encoder 110 as a method of finding the reference point of the weighing buckets 200, but is not limited thereto.

The reference point may be determined using the sensor 1000, of course, and in addition, various methods for achieving the object of the present invention may all be applied.

In the above, an example of a program of a detailed function for how the encoder 110 finds the reference point of the weighing buckets 200 is as follows.

1. First, the weighing buckets 200 are uniquely numbered from 1 to 20.

2. When the No. 1 weighing bucket 200 reaches the top point of the space portion 708 , that is, when the No. 1 weighing bucket 200 reaches the center line or near the center line of the transfer conveyor 600 , No. 1 The weighing bucket 200 is set to 0 degrees, which is the reference point of the encoder 110 .

3. When the No. 1 weighing bucket 200 performs one rotation of 360 degrees and comes to the No. 1 position again, it becomes 0 degrees again and repeats this infinitely.

If the sections described in the present invention are again described assuming the moment when the No. 1 weighing bucket 200 reaches the top point of the space portion 708,

When the weighing bucket 200 is a total of 20,

For example, the section in which the 7-15 weighing bucket 200 is located is the input section (“A”), and the 16-19 weighing bucket 200 is located in the weighing section (“B”), 20, 1 The section where the No. and No. 2 weighing buckets 200 is located is the discharge section (“C”), and the section where the No. 3 to No. 14 weighing bucket 200 is located becomes the automatic reset section (“D”), and it is determined and performed The encoder 110 is used for this function.

On the other hand, the present invention provides a technology of the scraper 30-1 that works more effectively among the conventional discharging devices 30 for dropping sorted articles from the transfer conveyor 600, which is the operating point of the scraper 30-1. ("P") relates to position and orientation.

11 shows a scraper 30-1 for pulling and discharging the sorted articles after the sorted articles that have passed the measuring section 20 that rotates and measures the weight of the conventional checkweighers arrives at the transfer conveyor 600. A floor plan that describes

12 is a scraper 30-1 that pushes out and discharges the sorted goods that have passed through the measuring section 20 that rotates and measures the weight according to the present invention after reaching the transfer conveyor 600. It is a flat view.

In FIG. 11 , the hinge point (rotational action point) (“P”) of the scraper 30-1 of the conventional checkweigher is from the inlet 600-1 side to the outlet 600-2 side in the transfer conveyor 600. toward the end of the scraper 30-1 past the position of the scraper 30-1.

At this time, in the conventional method as shown in FIG. 11, the hinge point (“P”) of the scraper 30-1 for rotating and dropping the sorted article that was moving is the unit time (t seconds) for the sorted article as the “X” coordinate. While moving as much as “Y” coordinates, the closer to the hinge point (“P”), the smaller the moving distance. It becomes a movement of being chewed in the gap between the lower surfaces of the scraper (30-1), and the sorted items that have started to chew cannot fall to the lower part of the conveyor due to the interference of the hinge point pillar, causing mechanical trouble while being stuck in the pillar like “A”. will do

This chewing phenomenon occurs as long as the scraper 30-1 is pulled and discharged as long as it is discharged, and it is a problem for all fish and shellfish. ) and damage the belt surface of the transfer conveyor 600 and cause serious problems such as stopping the machine operation.

On the other hand, in FIG. 12 , the hinge point (rotational motion action point) (“P”) of the scraper 30-1 of the checkweigher according to the present invention is the outlet 600-2 from the inlet 600-1 side in the transfer conveyor 600 ), it is located at the first starting point of the scraper (30-1) before passing the position of the scraper (30-1).

At this time, while the hinge point ("P") of the scraper 30-1, which intends to rotate and drop the sorted article being moved, the sorted article moves by the unit time (t seconds) in the "X" coordinate, "Y" In terms of coordinates, the moving distance becomes larger as it gets further away from the hinge point ("P").

As such, when the X value is equal to or greater than the Y value (Y>X), the sorted items do not have a chewing structure, and the sorted items that reach the drop site do not have the hinge point pillar of the scraper (30-1), so it interferes like “B”. free fall without

Although it is a small difference, the scraping method according to the present invention minimizes damage to selected products and suppresses the phenomenon of damage to the product, thereby increasing profitability, as well as not stressing fish and shellfish, thereby improving freshness. There will be a ripple effect.

And the present invention provides a scraping method for pushing, and at the same time provides a technique characterized in that the hinge points ("P") of the scraper 30-1 are arranged in a zigzag manner without facing each other symmetrically.

13 is an explanatory view showing that scrapers are arranged side by side among the conventional discharging device, and FIG. 14 is an explanatory view showing that the scraper according to the present invention is arranged in a zigzag manner.

In FIG. 13, when the scraper 30-1 is operating to drop the sorted article, the scraper 30-1 and the opposite scraper paired with the scraper 30-1 to drop the next sorted article that comes close (following closely) 30-2) may interfere with each other.

That is, while the scraper 30-1 on one side tries to open before it closes before the scraper 30-1 on one side opens, a pair of scrapers 30-1 and 30-2 causes trouble and malfunctions. it will cause

On the other hand, if you look at Fig. 14 in which the hinge points ("P") are arranged in a zigzag manner, even if the scraper 30-1 on one side facing half a pitch is opened and not closed, the scraper 30-2 on the opposite side is There is no problem in dropping the sorting items that follow closely next time.

This configuration is a method that must be provided in the checkweigher according to the present invention, which has a significantly faster processing speed than the conventional sorter.

That is, if there is no configuration in which (1) the scraper (30-1) technology for discharging while pushing and (2) the hinge points ("P") of the scraper 30-1 are arranged in a zigzag manner presented in the present invention, the processing speed It is impossible to smoothly discharge the sorting device according to the present invention, which has become faster.

15 is an explanatory diagram for an embodiment showing that the circular rotating plate is manufactured as a separate frame and operates in connection with the side of the frame.

The present invention is not limited to that the rotation measuring unit 20 including the base plate 70 and the circular rotating plate 300 is fixedly coupled to the frame 10 as an integral body, and the rotation measuring unit 20 is independent as a separate frame. By making phosphorus, the sorting device according to the present invention is divided into two parts: the transfer conveyor 600 and the rotation measurement unit 20, and the rotation measurement unit 20 is located at various angles or positions such as the upper surface or the lower surface of the transfer conveyor 600 can be placed in the field to create an appropriate placement in the field.

In the present invention, the selected product has been specifically described as abalone, but it is not limited to shellfish such as abalone.

Applicable sorting items may be fish such as reference fish, dried persimmons, etc., and any item may serve as a checkweighing device by appropriately modifying the weighing bucket 200 in consideration of the characteristics of the item or through a specialized design. it can be

In addition, in the present invention, although it has been illustrated and described as placing the sorted items on the weighing bucket 200 by hand, this is also not limited thereto.

For example, if a servo motor capable of exchanging the same timing information in response to the rotation of the weighing bucket 200 is connected, unmanned operation as an automatic feeding device will be possible. It should be construed as falling within the scope of the claims unless it deviates significantly from the spirit pursued by the present invention.

That is, it should be said that all similar but minor differences that are attempted to achieve the object of the present invention shall fall within the scope of the present invention.

Load cell (100), weighing bucket (200), rotation measuring unit (20), reduction motor (90)

Claims (8)

In the electronic checkweigher that measures the weight of sorted items using a load cell and sorts them by weight,
frame;
A plurality of weighing buckets for accommodating the sorted items, a plurality of load cells corresponding to the plurality of weighing buckets one-to-one for measuring the weight of the stored sorted items, the plurality of weighing buckets and a plurality of load cells are installed and rotate at a constant speed a rotation measuring unit provided on one side of the frame and having a circular rotating plate;
a transport conveyor mounted inside the frame and configured to transport the sorted articles whose weight is measured by the rotation measuring unit;
a plurality of discharging devices installed on the transfer conveyor for each preset weight section and for discharging the sorted articles transported by the transfer conveyor for each weight section; and
A control box with a built-in servo system for controlling the discharging device so that the sorted products on the conveying conveyor are discharged by weight section by receiving the weight information of the sorted articles from the rotation measuring unit and controlling the discharging device corresponding to the received weight includes,
The rotation measuring unit
The 360-degree space in which the rotating circular rotating plate is located is divided into three sections consisting of an input section (“A”), a metering section (“B”) and an outlet section (“C”), and the circular rotating plate has a constant speed When rotating, in the input section (“A”), the sorted article is loaded into the weighing bucket of the circular rotary plate located in the input section (“A”), and in the weighing section (“B”), the weighing section ( The weight of the sorted items placed on the weighing bucket of the circular rotary plate located in “B”) is measured, and in the discharging section (“C”), the sorted items stored in the weighing bucket located in the discharging section (“C”) are measured. Doedoe falling towards the conveying conveyor, the lifting bolt protruding in the opposite direction of the weighing bucket discharge part starts at the “IN” point.

' It is lifted along the trajectory of the space provided between the upper and lower guide plates of the shape, and then descends toward the "OUT" point and is placed on the discharge part 71 of the weighing bucket 200. It is characterized in that the selected items that have been stored are discharged,
At least one weighing bucket and a load cell corresponding to the weighing bucket are installed in the corresponding area of the circular rotary plate located in the input section, the metering section and the discharge section,
Electronic checkweigher, characterized in that a local PLC is installed on the upper part of the circular rotating plate, which receives the weight information of the sorted product measured by the load cell in the weighing section ("B") and transmits it to the main PLC of the servo system. The method of claim 1, wherein the local PLC is
In the weighing section ("B"), the weight of the selected item put into the weighing bucket is measured multiple times using a load cell corresponding to the weighing bucket, and the average value is determined as the final result value, or the intermediate value is the final value Electronic checkweigher, characterized in that determined by the result. delete In the electronic checkweigher that measures the weight of sorted items using a load cell and sorts them by weight,
frame;
A plurality of weighing buckets for accommodating the sorted items, a plurality of load cells corresponding to the plurality of weighing buckets one-to-one for measuring the weight of the stored sorted items, the plurality of weighing buckets and a plurality of load cells are installed and rotate at a constant speed a rotation measuring unit provided on one side of the frame and having a circular rotating plate;
a transport conveyor mounted inside the frame and configured to transport the sorted articles whose weight is measured by the rotation measuring unit;
a plurality of discharging devices installed on the transfer conveyor for each preset weight section and for discharging the sorted articles transported by the transfer conveyor for each weight section; and
A control box with a built-in servo system for controlling the discharging device so that the sorted products on the conveying conveyor are discharged by weight section by receiving the weight information of the sorted articles from the rotation measuring unit and controlling the discharging device corresponding to the received weight includes,
The rotation measuring unit
The 360-degree space in which the rotating circular rotating plate is located is divided into four sections consisting of an input section (“A”), a weighing section (“B”), a discharge section (“C”) and an automatic reset section (“D”). However, when the circular rotary plate rotates at a constant speed, in the input section (“A”), the sorted article is loaded in the weighing bucket of the circular rotary plate located in the input section (“A”), and the weighing section ( In “B”), the weight of the sorted items placed on the weighing bucket of the circular rotary plate located in the weighing section (“B”) is measured, and in the discharging section (“C”), the weight is measured in the discharging section (“C”). The sorted goods stored in the weighing bucket located fall toward the transfer conveyor, but the lifting bolt protruding in the opposite direction of the weighing bucket discharge part starts at the "IN" point.

' It is characterized in that it is lifted along the trajectory of the space provided between the shaped upper and lower guide plates and then descends toward the "OUT" point to discharge the sorted items stored in the discharge part of the weighing bucket, and the automatic In the reset section (“D”), the zero point of the weighing bucket in an empty state is set by discharging the sorted items located in the automatic reset section (“D”), and in the input section, weighing section, discharging section and automatic reset section. At least one weighing bucket and a load cell corresponding to the weighing bucket are installed in the corresponding area of the circular rotary plate,
Electronic checkweigher, characterized in that a local PLC is installed on the upper part of the circular rotary plate, which receives the weight information of the sorted article measured by the load cell in the weighing section ("B") and transmits it to the main PLC of the servo system. The method of claim 1, wherein the local PLC is
and a communication cable connected to the main PLC built into the control box,
An electronic checkweigher comprising a data transmission/reception terminal between the rotating local PLC and the main PLC, and a power terminal for receiving DC power from a power supply built in the control box. The method according to any one of claims 1, 2 and 5, wherein the main PLC is
When the power source supplied to the main PLC is DC current, it is connected to the local PLC through 6 lines,
3 of the 6 lines are communication lines between the rotating local PLC and the fixed main PLC and are connected through slip rings, and 2 of the 6 lines are from the power supply built into the control box. 24V DC current is supplied to the local PLC through a slip ring, and one of the six wires is supplied through a slip ring to supply a ground line to the local PLC. delete According to claim 1,
A slip ring integrally coupled to the circular rotation plate is provided on a lower portion of the circular rotation plate, and a reduction motor shaft to be fitted and coupled to a hole machined in an inner diameter of the slip ring is provided on a lower portion of the slip ring, and the reduction motor shaft is accommodated therein. An encoder integrally coupled to the reduction motor by an encoder bracket is provided at a lower portion of the reduction motor, and the encoder and the reduction motor shaft are coupled by a coupling such that the circular rotating plate uses the reduction motor and the reduction motor shaft as a power source Characterized in rotating using, the electronic checkweigher.

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