KR20220104604A - Solting machine by turntable - Google Patents

Abstract

The present invention provides an electronic weight grading machine which weighs and sorts articles to be sorted by using load cells, wherein a plurality of load cells and a plurality of weighing buckets are installed on the edge of an infinitely rotating circular turntable, a slip ring is provided in the lower portion of the circular turntable, and a local PLC is installed in the upper portion of the circular turntable, so that the same can rotate at a constant speed while performing a uniform circular motion in communication with a main PLC. The electronic weight grading machine using the circular turntable provides a discharge technique in which when the weighing buckets rotating at a constant speed reach a discharge section, articles to be sorted are dropped in the circular turntable by a plurality of movable guide plates that are movable back and forth by an air cylinder. The present invention enables high precision weighing that provides almost the same effect as weighing on a stopped electronic scale while improving the processing speed.

Description

Electronic checkweigher using circular rotary table {SOLTING MACHINE BY TURNTABLE}

Electronic Checkweigher, Electronic Checkweigher

Republic of Korea Patent 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 the selected item placed between the scrapers during split rotation that repeats rotation and stops stops at the weighing plate during intermittent movement. It is a sorting device that allows the sorting products to be transported on the transfer conveyor after the lapse of time to be accommodated in the container by the ejection device at the ejection point corresponding to the set value.

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

However, there was a problem in that (1) machine operation was interrupted frequently because foreign substances such as small abalone or cut abalone shell were caught between the transfer scraper with intermittent rotation and the fixed circular bottom plate or between the circular bottom plate and the measuring plate. ,

When the transfer scraper rotates for only one cycle and temporarily stops, the abalone arriving on the weighing plate slides back and forth due to the flesh due to the generated inertia force or is measured while shaking due to the round shell (2) Problems with inaccurate weight measurement There was this, and for the stable landing of the abalone, the time required per cycle had to be increased.

In other words, the desired precision in the market was guaranteed only when a time of at least 0.6 seconds was given to each animal, and the processing speed of 5,000 to 6,000 rice per hour was to be satisfied. (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, 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 that performs a constant circular motion while communicating with the main PLC,

It provides a discharging technology in which the weighing bucket, which rotates at a constant speed, reaches the discharging section and automatically drops the sorted items stored in it to the transfer conveyor without power.

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

Because it does not measure the weight at the moment it temporarily stops while rotating, but measures the weight while it is rotating while it is stably placed on the bucket,

High-precision weighing with almost the same effect as measuring abalone weight on a stationary electronic scale is possible, and at the same time, the processing speed can be significantly increased while maintaining accuracy, which is the maximum amount that two workers can put on the weighing bucket. 0.3 sec/1 micro processing speed becomes possible.

This has the effect of reducing the abalone sorting time from 5 hours to 3 hours and 20 minutes when the daily work volume is 40,000 rices/hr and 8,000/hr. ,

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

According to the present invention, if there is no mechanical trouble and the 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
9 is a cross-sectional view showing another embodiment of the landing suit shown in FIGS. 3 to 4
Figure 10 is a perspective view of Figure 9
11 is a plan view of another embodiment according to the present invention;
12 is an independent piece of the upper fixing plate to be fixedly coupled to the guide plate;
13 is a cross-sectional view showing a state in which the guide plate is pulled;
14 is an explanatory view showing the trajectory of the guide plate to be moved;
15 is a cross-sectional view showing a state in which the guide plate is pushed;
Fig. 16 is a perspective view illustrating Fig. 13;
Fig. 17 is a perspective view illustrating Fig. 15;

Typically, an electronic checkweigher has a belt between the head pulley and the tail pulley, passes the sorted goods through a sensor conveyor that repeats infinite rotation, and the sorted goods whose weight is measured as they pass are moved to the transfer conveyor and then the position corresponding to the set value It has a structure in which it is classified by dropping it into the lower storage bin by the discharge scraper,

Republic of Korea Patent Registration No. 10-1555807 (electronic checkweigher without sensor conveyor) measures the weight of a sorted item inserted between several rotating scrapers after intermittent rotation of the scraper and stopping for a while before rotating again In contrast to the structure that

In the present invention, a plurality of load cells 100 (Load-cell) on which a weighing bucket 200 (Bucket) is placed are arranged at equal intervals on the outside of a circular rotation plate 300 that rotates infinitely at a constant speed, and the circular rotation plate 300 A reduction motor to be fitted with a slip ring 400 (Slipring = Collector ring) integrally coupled to the circular rotating plate 300 at the lower portion and fitted into a hole machined in the inner diameter of the slip ring 400 at the lower portion of the slip ring 400 A shaft 91 is provided and an encoder 110 integrally coupled to the reduction motor 90 by an encoder bracket 111 is provided at a lower portion of the reduction motor 90 housing the reduction motor shaft 91 therein. The encoder 110 and the reduction motor shaft 91 are characterized in that they are coupled by a coupling 120,

A local PLC 500 and a PLC output card 502 are installed on the upper portion of the circular rotary plate 300 to communicate with the main PLC (not shown) while the load cells 100, the weighing buckets 200, and the circular rotary plate ( 300) and the slip ring 400, the reduction motor shaft 91 and the encoder 110 as one body form a single body, and provide an electronic checkweigher that rotates at a constant speed while performing a uniform circular motion,

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.

After being measured by the rotation measuring unit 20 provided on one side of the frame 10, the sorted goods are dropped to the upper surface of the transfer conveyor 600 and moved to a point set by the servo system in the control box 50 while moving. The early sorted goods are dropped down the transfer conveyor 600 by the discharging device 30 installed at the corresponding position and sorted by weight in the container 60, and this device is a well-known technology in the field of electronic checkweighers. 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 setting plate 81 is fixedly coupled to the frame 10 by the reduction motor setting hole 80 .

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 setting plate 81 is fixedly coupled to the frame 10 by the reduction motor setting hole 80 .

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 on the slip ring 400 is the outer diameter of the reduction motor shaft 91 . The slip ring 400 and the reduction motor shaft 91 are integrally fixedly coupled by a method such as a mood wrench 401.

The slip ring 400 rotates while a plurality of metal rings are combined in a plurality of layers, and when current flows in a plurality of fixed brush holders 402 corresponding to each metal ring, current is transmitted to each metal ring. As a result, it is an electrical connector through which current is transmitted to each screw portion 403 protruding from the upper side of the rotating slip ring 400 , which is a well-known technology and a more detailed description thereof will be omitted.

The number of the metal rings, 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 purpose and configuration of the selector.

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

However, in the present invention, 7 are illustrated and described.

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 has a hole processing corresponding to the 7 threaded parts 403 . After the circular rotation plate 300 is fitted into the protruding threaded part 403, the circular rotating plate 300 and the protruding threaded part 403 are integrally and fixedly coupled with a nut. The number of 403 is 7 in total, and the circular rotating plate 300 concentric with the slip ring 400 is provided with a machined hole corresponding to the seven threaded parts 403, so that the circular rotating plate 300 is protruded. After being fitted in the circular rotating plate 300 and the protruding screw portion 403 after being fitted in the 403, the nut is integrally fixedly coupled.

That is, the reduction motor shaft 91, the coupling 120, the encoder 110, the slip ring 400, and the circular rotating plate 300 are concentrically rotated synchronously, but the seven fixed brush holders The 7-stranded electric wire 120 added to the 402 is being transmitted to the 7 threaded parts 403 or nuts protruding upwards from the rotating circular rotating plate 300 .

At this time, it is natural that the No. 1 to No. 7 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 a local PLC 500 and a PLC output card 502 are integrally formed on one side of the local PLC fixing bracket 501. fixedly coupled

In addition, a plurality of load cells 100 (Load-cell) and a weighing bucket 200 (Bucket) are provided on the outside of the circular rotary plate 300 (in the present invention, 20 is shown and described), for example, 20 load cells 100 ), the electric wire goes down to the lower part of the circular rotation plate 300 using the through hole 31 provided on one side of the circular rotation plate 300, and is arranged while being hung by the wire hanger 32, and then through the hole 31 again. .

The PLC output card 502 in the present invention uses 2 channels, and since there are 20 load cells 100 , a total of 10 PLC output cards 502 are fixedly coupled to the local PLC 500 in succession.

The local PLC 500 is connected to the 7 electric lines 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 local PLC 500 and the 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 24V current 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 lines are electric cables for connecting the load cell on the PLC input side.

In this way, the electronic components including the main PLC (not shown) and the power supply (not shown) and all electric devices are fixed in the control box 50, and the load cell 100 necessary for measuring the weight, While 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 simultaneously with the circular rotation plate 300, the necessary current is stably supplied during rotation. will be.

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.

At this time, the local PLC 500 and the local PLC fixing bracket 501 to which the PLC output card 502 is attached are 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 has a flange and is fixed to the circular rotating plate 300 by a fixing bolt 42 or the like, and the through holes 31 through which the electric wire passes are PG waterproof connectors (not shown). Since (cable gland) is used, the local PLC 500 and the 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.

5a, the fixing bolt 42 is described for the purpose of fastening the protective cover 41 and the circular rotating plate 300, but the fixing bolt 42 in FIG. 5c is only fixed to the upper flange 302. The protective cover 41, not used for coupling, may be used as a simple structure that is placed on the upper flange 302. This configuration will be a preferable structure in which the protective cover 41 can be easily attached and detached in case of emergency.

In addition, a plurality of holes are provided on the outside of the PLC housing 301 , and PGs 307 are installed in each hole, so that the load cell 100 wire passes easily, but it is 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 bucket, and a bucket holder 54 is provided below it, and a hinge point 51 is also provided below it. A lower bracket 53 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 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. A 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, and then is closed as an anti-loosening fixing nut 58 .

As a result, the weighing bucket 200 has a structure that can be rotated around the hinge point 51, and is placed on the bucket holder 54 so that it can be stopped in a horizontal state when it is lifted and then descended again. .

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 .

The lifting bolt 61 has a predetermined length and protrudes toward the inner direction of the weighing bucket 200, that is, toward the center direction 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 weighing 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 is connected to the lower side through the base plate 53b. All of them can be assembled at once.

The present invention provides a discharging technique in which the weighing bucket 200 automatically and automatically drops the sorted items stored in the discharging section "C" toward the transfer conveyor 600, which will be described in detail with reference to FIG. 7 .

The weighing bucket 200 can be lifted by, for example, 8 steps by 5°, for a total of 40°. At this time, the abscissa 701 for each lifting angle can be obtained from the protruding central point of the lifting bolt 61 as a starting point, and the vertical coordinate 702 for each time period 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 is provided on the upper side of this space 708 while the space 708 is provided along the curve of the lifting and lowering of the protruding lifting bolt 61 created in FIG. 7 , A lower guide plate 704 is provided on the lower side, respectively.

These guide plates 703 and 704 should be installed at an oblique slope along the path of the lifting bolt 61, and the upper guide plate 703 is fixedly coupled to the upper fixing plate 700, but the guide plate insertion hole 705 is the guide plate. It is inserted into the welding bracket 706 and 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.

3, the working space according to the present invention in a plan view is a workbench 950 for placing sorted articles such as abalone on the premise that the weighing bucket 200 rotates counterclockwise, and the sorted articles are placed on the weighing bucket 200. An input section (“A”) for placing, a weighing section (“B”) for measuring the weight of the sorted items placed on the weighing bucket 200, and a non-motorized and automatic transfer conveyor 600 ) is divided into an ejection section (“C”) for dropping toward the ) and an automatic reset section (“D”) for zeroing the weighing bucket 200 in an empty state with the sorted items stored therein once for each wheel.

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. The method of measuring abalone or selected items multiple times at the desired timing or at the desired divided angle, and analyzing (processing) the data to derive accurate results is applied.

For example, if you measure multiple 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 by rolling, pitching, or triple wave 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. Also, in addition to this, various methods for increasing 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 of the three values is taken.

This method of determining the final value shows that very reliable results are obtained when the apparatus of Korean Patent Registration No. 10-1555807 (electronic checkweigher without sensor conveyor), which is a prior art registered by the present applicant, is operated at sea. It is a desirable method that has been confirmed through practice.

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

For the sorted goods that have reached the discharge section (“C”), the weighing bucket 200 is automatically lifted toward the transfer conveyor 600 without power and immediately comes down 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 conveyer 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 the present invention 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 hole 300a provided on one side of the circular rotation plate 300 .

The upper fixing plate 700 is made in a donor shape along the trajectory of the weighing bucket 200 and provided with a lid 804 on the upper side of the protective cover 41 to provide a local PLC 500 and a load cell card 502. It has a structure that provides maximum protection 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 bucket 200 is assigned a unique number 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.

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

For example, the section where the 5-16 weighing bucket 200 is located is the input section (“A”), and the section where the 17-19 weighing bucket 200 is located is 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 or No. 4 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.

The above description relates to sorting through the discharging device 30 after the sorted articles measured by the rotation measuring unit 20 are moved to the transfer conveyor 600,

In the present invention, another embodiment will be described in more detail with reference to FIGS. 11 to 17 .

That is, it is also possible to have only the base plate 70 fixed to the frame 10 and the rotation measuring unit 20 rotating in a circle on the frame 10 while the transfer conveyor 600 is omitted in the above description. .

As shown in Figure 12, the rotation section according to the present invention includes the input section "a" to put the sorted article, the measuring section "b" to measure the weight of the sorted article after passing the input section, and the measured sorting article It consists of a plurality of discharge sections “c” for dropping directly to the floor rather than the transfer conveyor 600, and a zero point section “d” for automatically setting the zero point when the discharge is completed and the weighing bucket 200 is emptied. characterized in that

In order for this configuration to be possible, the fixed pair of guide plates 703 and 704 shown and described above should be omitted, and instead of the fixed pair of guide plates 703 and 704, a plurality of pairs of free movement as many as the number of outlets Guide plates 703 and 704 should be provided.

If there are four outlets as shown in FIG. 12 , four pairs of movable guide plates 703 and 704 capable of moving forward and backward by the air cylinder 1000 are provided.

To this end, four independent pieces of the upper fixing plate 700 - 1 positioned at the same or similar height as the upper fixing plate 700 are required. Guide plates 703 and 704 are coupled to the upper fixed plate independent piece 700-1 as one body, and the welding brackets 706 are on one side of the upper fixed plate independent piece 700-1, and the welding bracket insertion hole 705- of the upper fixed plate independent piece 700-1. 1), and on one side is fixed to the guide plate insertion hole 705 of the upper guide plate 703 to form an integral body.

At this time, the upper fixed plate independent piece 700-1 is in equilibrium with the upper fixed plate 700, while the movable guide plates 703 and 704 maintain an oblique slope while the lifting bolt 61 can be easily lifted. to form a trajectory.

The air cylinder 1000 is attached to the air cylinder fixing bracket 1002 on one side of the upper fixing plate 700 which is integrally fixed with the pillars 801 on the base plate 70 fixedly coupled to the frame 10. The air cylinder 1000 rod is provided with an independent piece fixing bracket 1001 integrally coupled to the upper fixing plate independent piece 700-1, so that the air cylinder 1000 rod advances in the "F" direction as a result. When the guide plates 703 and 704 are moved in the "F" direction, the lifting bolt 61 can be lifted, and when the guide plates 703 and 704 are moved backward in the "R" direction, the guide plates 703 and 704 are moved backward in the "R" direction. Deviating from the rotation trajectory of the lifting bolt 61 provided on one side of the bucket 200, the weighing bucket 200 is not lifted and just passes through.

At this time, when the sorted goods put in in the input section “a” reach the discharge section “c” after measuring the weight in the measuring section “b”, let’s assume that the set value of the program to be discharged according to the weight is the 3 outlet. It becomes like this:

1. In the air cylinder 1000 provided at the first discharge point in the discharge section "c", the rod is reversed in the "R" direction, so the weighing bucket 200 rotating in the "T" direction is not lifted and the sorted items are not lifted. Continue the rotation while passing through the No. 1 discharge point in the "S" direction.

2. In the air cylinder 1000 provided at the 2nd discharge point in the discharge section "c", the rod is reversed in the "R" direction, so the weighing bucket 200 rotating in the "T" direction is not lifted and the sorted items are not lifted. Continue the rotation while passing through the 2 discharge point in the "S" direction.

3. Since the air cylinder 1000 provided at the 3 discharge point in the discharge section "c" recognizes the program setting value as the 3 discharge port, it operates in the following order to discharge the sorted products.

① PLC provided in the control box 50 sends a signal to a solenoid valve (not shown) to command the rod of the air cylinder 1000 to advance in the "F" direction.

② The load of the air cylinder 1000 prepares to advance in the "F" direction, but only after waiting for one more signal, the PLC command is executed.

③ One signal in ② means that the proximity sensor 1004 fixed to the base plate 70 recognizes the metal target 1003 provided on one side of the circular base plate 300 .

④ After the load of the air cylinder 1000 receives a signal from the solenoid valve (not shown), the proximity sensor 1004 recognizes the metal target 1003 rotating, and then executes the PLC command to "F" direction advance to

⑤ The trajectory of the lifting bolt 61 of the weighing bucket 200 rotating in the “S” direction is encountered with the obliquely inclined lower guide plate 704 .

⑥ The lifting bolt 61 of the weighing bucket 200 rotating in the "S" direction is lifted in the "U" direction along the lower guide plate 704, and the weighing bucket 200 uses the hinge point 51 as the center point. A slope is formed to drop the sorted items to the floor.

⑦ The lifting bolt 61, which was lifted in the "U" direction, is lowered again, and the weighing bucket 200 is again maintained in a horizontal state and passes through the No. 3 discharge point.

4. In the air cylinder 1000 provided at the 4 discharge point in the discharge section "c", the rod is reversed in the "R" direction, so the weighing bucket 200 rotating in the "T" direction is not lifted and the "S" After passing the 4 discharge point in the direction

In the above, the proximity sensor 1004 fixed to the base plate 70 and the metal target 1003 fixed to the circular base plate 300 should be provided with a pair for each discharge point, for example, as described by way of example in the present invention. If there are 4 discharge points, 4 pairs should be provided, and the proximity sensor 1004 or the metal target 1003 is assembled with slot grooves so that fine adjustment is possible in order to accurately drop the sorted items to the desired target point. It is preferable to be

The proximity sensor 1004 and the metal target 1003 are essential components to operate the electronic checkweigher using the circular rotary table of the present invention. If there is no such configuration, a solenoid valve ( When the rod of the air cylinder 1000, which received a signal from (not shown), advances in the "F" direction, which is the trajectory of the lifting bolt 61, the lower guide plate 704 rotates in the "S" direction of the weighing bucket 200 ) There is a possibility that an accident colliding with the lifting bolt 61 of the .

The reduction motor 90 is a common common sense that the correct R.P.M is not uniformly added at the time of shipment from the factory. 200) may have different angular velocities.

Therefore, it is very important to catch the entry timing in the "F" direction to prevent the collision of the lifting bolt 61 and the lower guide plate 704, and the proximity sensor 1004 recognizes the metal target 1003. The present invention provides an entry timing technology that prevents collision when the rod of the air cylinder 1000 advances in the "F" direction at the time.

And in the present invention, another embodiment similar to the above description will be described.

The air cylinder 1000,

A Y bracket (1100) is configured on the rod, and a bearing (1200) is provided inside the Y bracket (1100),

When the rod advances in the "H" direction, the bearing 1200 can lift the bottom surface of the weighing bucket 200 so that the sorted items stored in the weighing bucket 200 fall, and when it moves backward in the "K" direction The Y bracket 1100 and the bearing 1200 are to be reversed.

That is, the air cylinder 1000 is fixedly coupled while maintaining an oblique inclination to one side of the base plate 70 by the fixing bracket 1002, and the circular rotating plate 300 has a through hole ( 2001) is provided, and when the rod of the air cylinder 1000 advances in the "H" direction, the bearing 1200 passes through the through hole 2001 at a high speed and immediately after lifting the bottom surface of the weighing bucket 200 " By reversing in the K" direction, it returns to its original state under the passing hole 2001 of the circular rotating plate 300 without colliding with the rotating circular rotating plate 300 .

This configuration will make the present invention a simpler structure and provide a lower manufacturing cost.

The present invention in the above description is a configuration that effectively operates by connecting the transfer conveyor 600 when sorting about five or more weights,

The present invention described in another embodiment omits the conveying conveyor 600 when sorting about 5 or less weights and provides only the circular base plate 70 and the rotation measuring unit 20, so that the configuration is simplified and the installation area It is a desirable structure with remarkable advantages such as minimizing damage to the body and minimizing the movement of selected items.

In the above, the air cylinder 1000 is shown and described as being coupled to one side of the upper fixing plate 700 that is integrally fixed with the pillars 801 on the base plate 70 fixedly coupled to the frame 10, and However, the present invention is not limited thereto.

That is, of course, the air cylinder 1000 may be fixed by a separate member (not shown) directly connected to the frame 10 or the base plate 70, and in addition to the air cylinder 1000, hydraulic or electric It can also be realized by a mechanism with a linear reciprocating motion.

In addition, even if there is another method of separating and discharging the sorted items stored in the weighing bucket 200 from the weighing bucket 200 without using the air cylinder 1000, the present invention seeks to achieve the purpose of the electronic checkweigher of the turntable type. If it is an idea or means, it will be said that it falls within the scope of the present invention.

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 fall within the scope of the present invention.

Load cell (100), weighing bucket (200), rotation measuring unit (20), reduction motor (90), hinge point (51), air cylinder (1000)

Claims (3)

In the electronic checkweigher for measuring sorted items using a load cell,
A frame 10, a base plate 70 fixed to the upper portion of the frame 10, a rotation measuring unit 20 provided on the frame 10, and a control box 50 having a servo system embedded therein,
It is characterized in that a plurality of movable guide plates 703 and 704 capable of moving forward and backward by the air cylinder 1000 are provided on the upper fixed plate 700 together with the plurality of air cylinders 1000,
The rotation measurement unit 20,
The rotation section includes the input section "a" to put the sorted product, the measurement section "b" to measure the weight of the sorted product after passing the input section, and the discharge section "c" for discharging the measured sorted product , characterized in that it consists of a zero point section "d" for automatically setting a zero point in a state in which the discharge is completed and the weighing bucket 200 is emptied,
A plurality of load cells 100 on which the weighing bucket 200 is mounted are arranged at equal intervals on the outside of the circular rotation plate 300 , and a slip ring 400 integrally coupled to the circular rotation plate 300 at the lower portion of the circular rotation plate 300 . ) and a reduction motor shaft 91 to be fitted into a hole machined in the inner diameter of the slip ring 400 and coupled to the lower portion of the slip ring 400 is provided, and a reduction motor 90 housing the reduction motor shaft 91 therein. ) is provided with an encoder 110 integrally coupled to the reduction motor 90 by an encoder bracket 111 in the lower portion, and the encoder 110 and the reduction motor shaft 91 are coupled by a coupling 120 . It is characterized by being
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)
Load cells 100 , weighing buckets 200 , local PLC 500 , PLC output cards 502 , circular rotating plate 300 , slip ring 400 , and reduction motor shaft 91 . ), and the coupling 120 as an integral body, characterized in that it rotates while performing a constant velocity circular motion,
The air cylinder 1000,
When the rod advances in the "F" direction, the guide plates 703 and 704 are moved in the "F" direction so that the lifting bolt 61 can be lifted, so that the sorted items stored in the weighing bucket 200 fall, " When moving backward in the R" direction, the guide plates 703 and 704 are reversed in the "R" direction so that the weighing bucket 200 is not lifted out of the rotation trajectory of the lifting bolt 61 provided on one side of the weighing bucket 200. Electronic checkweigher, characterized in that it is passed through without.
The method according to claim 1,
The air cylinder 1000,
A Y bracket (1100) is configured on the rod, and a bearing (1200) is provided inside the Y bracket (1100),
When the rod advances in the "H" direction, the bearing 1200 can lift the bottom surface of the weighing bucket 200 so that the sorted items stored in the weighing bucket 200 fall, and when it moves backward in the "K" direction Electronic checkweigher, characterized in that the Y bracket (1100) and the bearing (1200) are reversed.
The method according to any one of claims 1 to 2,
The operation of the air cylinder 1000 is.
After receiving a signal from the solenoid valve (not shown) in the PLC provided in the control box 50, only after recognizing the metal target 1003 that the proximity sensor 1004 fixed in succession is rotating is the “F” direction or “H” " Electronic checkweigher, characterized in that it is configured to advance in the direction.

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