DE202013012044U1 - High-speed device for accurate and automatic sorting - Google Patents

Abstract

Combination of an automatic weight checkweigher (20) and a sorting machine (10), in which the weight checkweigher (20) determines the weight of continuous products to be sorted and transmits them to the sorting machine (10), and the sorting machine (10) corresponding to preset weight ranges Sorting of the products in question by weight, each weight range corresponds to a screening device (301 to 304), which is actuated respectively due to automatic calculation at the appropriate time for opening and closing.

Description

The present invention relates to a high-speed device for accurate and automatic sorting.

Farmers of the poultry and fishing industry have been sorting their products like chicken legs, chicken wings or frozen fish for a long time by weight. The sorting is carried out mainly on one of the two procedures listed below.

In the first procedure, the operator is instructed to perform the manual sorting by means of electronic scales. This approach requires operators on a large scale, has a low efficiency and because of the visual assessment of the weight can lead to human error.

The second approach uses semi-automatic sorting equipment, which is complicated to operate and requires the equipment to be readjusted after changing certain product parameters.

As labor costs increase, companies have an urgent need for cost savings and efficiency gains from new facilities, while avoiding human error through excessive involvement of operators.

In view of the above-mentioned problems, the present invention provides a high-speed sorting and accurate sorting apparatus using two equipments in combination, namely, an automatic weight checker and a sorting machine. The weight check scale can determine the correct weight of each product and sends that weight to the sorting machine. The sorting machine presets the sorting of the respective products by weight according to the previously set weight ranges. Each weight range corresponds to a sorting device, wherein the products are sorted by swinging movements as they pass through the sorting device corresponding to the relevant weight.

For the practical achievement of the above-mentioned object, the present invention discloses a high-speed device for accurate and automatic sorting, characterized in that it carries out the following steps:
Step 1, wherein the input of the length L _P and the execution amount N of the products to be sorted as well as the lengths L ₁ and L _{2 of} the weighing section and the transport section of the weight check weigher takes place;
Step 2, wherein the measurement of the times t ₁ , t ₂ and t _{3 of} the products to be sorted from the start position and the end position of the weight check weigher as well as the start position of the sorting machine to obtain the speed V _{1 of} the weight check weigher by means of the formula: V ₁ = L ₁ / (t ₂ -t ₁ );
Step 3, wherein the weighing of the products to be sorted takes place and according to the weight, the determination of the screening device for the corresponding action takes place;
Step 4, wherein a judgment is made as to whether there has been a loss of products to be sorted between the weighting weigher and the sorting machine, in case of a loss, a transition is made to step 1, and in case of an unreturned, a transition is made to step 5 ;
Step 5, wherein according to the execution amount N, the time t ₅ of maintaining the rejection device of the products to be sorted is obtained and the speed V _{2 of} the sorting machine is obtained by the following equation: t ₅ = L _P · 60 · F / V₂ Step 6, wherein the calculation of the opening time T _{4 of} the screening device is carried out: t ₄ = L ₃ × 600 / V ₂ -t _d Step 7, wherein the screening device is operated according to opening time t ₄ and retention time t ₅ ;
where t _d is the delay of software and electrical elements as well as the time of actions of cylinder and mechanical constructions, while L ₃ is the length between the start position and the end position of the sorter and F is the correction factor is.

Preferably, 100 ms is provided for t _d .

In the present application, an automatic calculation and determination is made to open the appropriate disposal device at a suitable time and take back, so as to ensure that all products can be sorted and sorted out at high speed.

With reference to the attached drawings, a person skilled in the relevant technical field can now turn to the detailed description of the device according to the invention, the above-listed and other objectives, features and advantages of the present invention.

1 Representation of the operating state of the rear provided sorting machine according to the present invention.

2 Front view of the sorting machine with previous weight check scale.

3 View from above on the sorting machine ,

Like from the 1 and 2 As can be seen, the present device has two systems in combination, namely the front weight check scale 20 and the rear sorting machine 10 , where the plant at the front is responsible for the weighing, while the plant at the back, according to the weight information provided by the plant at the front, calculates and evaluates the actions of the corresponding screening devices 301 . 302 . 303 . 304 controls. Furthermore, it is provided that the weight check scale 20 for measuring the weight of the conveyor belt 1 located to sort products and the information of the optical-electronic sensor device signals, wherein the weight of the products to be sorted via a communication port to the rear sorting machine 10 is transmitted and being through the sorting machine 10 It is specifically controlled which sorting device carries out actions for which weight range of the products to be sorted. For example, it is controlled that the screening device 301 the sorting of 0-10 kg of products to be sorted, the screening device 302 the sorting of products to be sorted by 10-20 kg, etc., etc. In addition, the sorting machine 10 control the action times of the screening devices, ie the time t ₄ , when which screening device starts to open and the time t ₅ of retaining the screening devices. This prevents weight information and products from being mismatched after loss of products on the production line. The process of practical implementation is explained below.

On the frame of the sorting machine 10 are on both sides along by conveyor belt 1 several disposal devices 301 . 302 . 303 . 304 . 304 provided with swing rods. In the device according to the present invention is carried out by simulation and analysis of the path of movement of the products to be sorted on the sorting machine 10 and the discard actions of the swing rod disposal device 2 with regard to the products, ensuring the accurate sorting of the products at high speed by the swinging rod-sorting device 2 ,

In addition, after changing the execution speed and (or) the product length L _{P of} the products to be sorted by the internal software of the sorting machine 10 automatically recalculating opening hours and retention times of disposal devices 301 . 302 . 303 . 304 without manual regulation.

Like from the the user firstly enters the parameters of the length L _P and the execution quantity N (ie number of pieces N per minute) of the products to be sorted into the control device of the sorting machine in question 10 one. In the L ₁ and L _{2 are} each the lengths of the weighing section and the transport section of the weight checkweigher 20 , Points A and B are on the weight check scale 20 while the point C at the input position of the sorting machine 10 located.

The operating speed of the weight check scale 20 is V ₁ and the speed of the sorting machine 10 is V ₂ . V ₁ and V ₂ each change according to different parameters of weight check scale 20 and sorting machine 10 , (Unit for the length is cm, unit for the time is ms, unit for the speed is m / min and unit for the execution amount is pcs / min).

If a product from the weight check scale 20 to the sorting machine 10 In each case, the control device can obtain the times of passage of the product through the three optical-electronic sensor devices. If we assume for point A t ₁ , for point B t ₂ and for point C t ₃ , the speed of the weight check scale can be 20 as listed below: V ₁ = L ₁ / (t ₂ -t ₁ ) (1)

At point B has the weight check scale 20 the weighing of the products to be sorted is completed and simultaneously transmits the weight data to the control device of the sorting machine 10 ,

Theoretically, the time of reaching point C by the products is as listed below: t ₃ = t ₂ + L ₂ / V 1 (2)

When approaching the time t ₃ , the control device measures the sorting machine 10 no products carrying out through point C, so that an assessment can be made that the product in question between B and C between the weighting balance 20 and the sorting machine 10 have been lost. The control device of the sorting machine 10 now discards the received weight data, the data in question are invalid and an activity of the screening devices 301 . 302 . 303 . 304 is not required anymore.

By the equation (1), the sorting machine 10 in real time the calculation of the speed of the front weight checkweigher 20 carry out. When the speed of the front weight check scale 20 A change can be experienced by the sorting machine 10 make an automatic adjustment of the time t ₃ at high speed.

By the equation (2) takes place at the same time a measurement of the signals of the opto-electronic sensor devices at the point C, so that a vote of the weight can be made on corresponding products. This means that if at the time t ₃ obtained by the equation (2) no signal of the opto-electronic sensor device is received at point C, this means that loss of products has occurred between B and C. Now fit weight and corresponding products no longer together and there is no transition to the course of action of the subsequent screening devices more. On the other hand, when a signal of the optical-electronic sensor device is received at point C at the time t ₃ obtained by the equation (2), it means that weight and corresponding products are matched. This will prevent you from using the weight checkweigher 20 Weight data are output, but the corresponding products have been lost in the transport, so that the weight data are assigned to the next product and thus would be done sorting the products in a wrong area and the screening devices 301 . 302 . 303 . 304 Would do wrong actions.

When the sorting machine 10 measures a match of weight data and products, the control device of the sorting machine starts 10 with the calculation of t ₄ , which sorting device starts to open at what time, and of t ₅ , the length of time of retention of the sorting device.

• (1) Öffnen der Aussonderungsvorrichtungen 301, 302, 303, 304. Die Steuerungsvorrichtung der Sortiermaschine 10 gibt ein hohes elektrisches Potential aus, das elektromagnetische Ventil bewirkt Leitung und der Zylinder wird ausgeschoben. Die für das Öffnen benötigte Zeit ist t_d, wobei es sich bei t_d um die Verzögerung von Software und elektrischen Elementen sowie um die Zeit der Aktionen von Zylinder und mechanischen Konstruktionen handelt. t_d kann durch experimentelle Messungen festgelegt werden, beispielsweise beträgt t_d ungefähr 100 ms. Daher muss das Steuerungssignal entsprechend vorzeitig ausgegeben werden.
• (2) Zeit t₅ der Beibehaltung der Aussonderungsvorrichtungen 301, 302, 303, 304 nach Öffnen. Die Aussonderungsvorrichtungen müssen mit dem Zurücknehmen warten, bis die Produkte vollständig in den Aussonderungsbereich eingegangen sind, weil nur so die korrekte Aussonderung der Produkte gewährleistet werden kann. t₅ erfährt Veränderungen im Zuge von Produktlänge L_P und Geschwindigkeit V₂ der Sortiermaschine.
• (3) Zurücknehmen der Aussonderungsvorrichtungen 301, 302, 303, 304. Die Steuerungsvorrichtung der Sortiermaschine gibt ein niedriges elektrisches Potential aus, das elektromagnetische Ventil schließt und der Zylinder wird zurückgezogen. Die Zeit für das Zurücknehmen und Zeit für das Öffnen sind ähnlich, beispielsweise beträgt t_d ungefähr 100 ms.

The operation of the screening devices 301 . 302 . 303 . 304 is divided into three steps:

• (1) Opening the screening devices 301 . 302 . 303 . 304 , The control device of the sorting machine 10 emits a high electrical potential, the electromagnetic valve causes line and the cylinder is ejected. The time required for opening is t _d , where t _d is the delay of software and electrical elements as well as the time of actions of cylinder and mechanical constructions. t _d can be determined by experimental measurements, for example, t _{d is} about 100 ms. Therefore, the control signal must be output prematurely accordingly.
• (2) time t ₅ of retention of the screening devices 301 . 302 . 303 . 304 after opening. The screening devices must wait until the products have been completely returned to the disposal area, as this is the only way to guarantee the correct disposal of the products. t ₅ experiences changes in the course of product length L _P and speed V _{2 of} the sorting machine.
• (3) Withdrawal of disposal devices 301 . 302 . 303 . 304 , The control device of the sorter outputs a low electrical potential, which closes the electromagnetic valve and the cylinder is retracted. The time for the reset and time for opening are similar, for example, t _{d is} about 100 ms.

The quantity N of the products (number of pieces N carried out per minute, the product length L _P , the time t _d required for easy opening or canceling of the rejection devices, and the distance L ₃ from point C to D. N, L _P and L ₃ can be determined at Screen of the control device can be adjusted.

From the above information, the time required for a single product can be obtained, namely: t = 1 / N (3)

Here, t is the average time required by the segregating devices for a complete action, and t less the time required to open and return the segregating device is the retention time t ₅ . The retention time of the disposal devices undergoes changes in the course of changes in the execution amount N.

By analyzing the operation of the screening devices, it is possible to obtain: t ₅ = L _p * 60 * F / V 2 (4)

In the equation (4), is L _P · 60 · F / V₂ the time required for the disposal device after opening to wait for the complete introduction of the products into the rejection area. F is a correction factor.

By combining Equations (3) and (4), we obtain: t ₅ = L _p * 60 * F / V 2 = 1 / N

Here, N, t _d , L _P and F (correction factor) are known variable quantities, while t ₅ and V ₂ are unknown variable quantities. t _d and F are fixed values.

Thus, by solving the equation, the speed V _{2 of} the sorting machine can 10 to be obtained.

After measuring products at the starting point C of the sorting machine 10 is done for t ₄ opening the screening device followed by waiting for t ₅ and withdrawing the screening device.

Assuming an obtained judgment of the sorting machine for the weight belonging to the area 1, action of the first sorting device located at the point D is performed. The length from the starting point of the sorting machine 10 up to its end point D is L ₃ . t ₄ = L ₃ × 600 / V ₂ -t _d (5)

Here is L ₃ · 600 / V₂ the time of movement of the products from point C to point D.

In an ideal state, the screening device has just just opened when moving the products to point D. This means that if the product has not yet moved to point D, the rejection device must prematurely open for t _d .

Assuming an obtained judgment of the sorting machine for the weight belonging to other ranges, a different distance must be added, but the principle of calculation of t ₄ and t ₅ remains unchanged.

By the above-mentioned analysis, the automatic calculation of V ₂ , t ₄ and t ₅ can be made directly when N, L _P and L ₃ are set. These parameters ensure that all products can be sorted and sorted out at high speed and accurately.

By applying the present invention to sorting machines, a new device for sorting products is provided whereby the combination of mechanics, electrics and software realizes the high speed sorting functions - for example, more than 200 products can be sorted per minute. The use of the present invention is convenient, safe and reliable, with few adjustments to the man-machine interface (screen of the control device) to automatically adapt to changes in speed, rate of execution, etc., thus replacing human labor on a large scale ,

The present invention provides an automatic sorting apparatus comprising three opto-electronic sensor devices, with automatic calculation and determination by the control device, at appropriate time, opening and withdrawing the respective rejection devices, and ensuring that the products are all at high speed and can be sorted and sorted out exactly.

In the foregoing, a description has been given of preferred practical embodiments to enable a person skilled in the relevant technical field to use or to use the present invention. Various modifications of these practical embodiments will be apparent to those skilled in the art, and the overall principle described herein may be applied to other practical embodiments without the need for creativity. Therefore, the present invention is not limited to the illustrated practical embodiments, but includes a broadest scope according to the principles and novel features disclosed herein.

In summary, the present invention discloses an accurate automatic high-speed sorting system that can be used to:
Input of the length LP and the execution quantity N of the products to be sorted as well as the lengths L1 and L2 of the weighing section and the transport section of the weight check scale ( 20 );
Measurement of the times t1, t2 and t3 of the products to be sorted from the start position and the end position of the weight check scale ( 20 ) as well as the starting position of the sorting machine ( 10 ) to the speed V1 of the weight check scale ( 20 ) to obtain;
Weighing of the products to be sorted and determination of the screening device ( 301 . 302 . 303 . 304 ) for the corresponding action according to the weight;
Judgment, whether between the weight check scale ( 20 ) and the sorting machine ( 10 ) Loss of products to be sorted, whereby in case of loss transfer to step 1, while in case of non-loss, transfer to step 5;
according to the execution amount N, obtaining the time T5 of retaining the weeding device ( 301 . 302 . 303 . 304 ) of the products to be sorted and maintaining the speed V2 of the sorting machine 10 using the equation below;
Calculation of the opening time T4 of the disposal device ( 301 . 302 . 303 . 304 );
Action of the screening device ( 301 . 302 . 303 . 304 ) according to opening time T4 and retention time T5.

An automatic calculation and determination is made to determine the appropriate disposal device ( 301 . 302 . 303 . 304 ) to be opened and taken back at the appropriate time to ensure that all products can be accurately sorted and sorted out at high speed.

LIST OF REFERENCE NUMBERS

1

conveyor belt

10

sorting machine

20

Weight check scale

301, 302, 303, 304

separation devices

N

Implementing amount

t

average time required for a complete action of the screening device

t ₁

Time of reaching point A.

t ₂

Time of reaching point B

t ₃

Time of reaching point C

t ₄

Opening time of the screening device

t ₅

Retention time of the screening device

t _d

needed time for easy opening or removal of the disposal device

L _P

product length

L ₁

Length of the weight check scale

L ₂

Length of the transport section

L ₃

Length of the sorting machine

V ₁

Transport speed of the weighing section of the weight check scale

V ₂

Transport speed of the transport section of the weight check scale

V ₃

Transport speed of the sorting machine

F

correction factor

Claims (4)

Combination of an automatic weight check scale ( 20 ) and a sorting machine ( 10 ), in which the weight check scale ( 20 ) determines the weight of continuous products to be sorted and to the sorting machine ( 10 ) and the sorting machine ( 10 ) according to preset weight ranges makes the sorting of the products in question by weight, each weight range of a screening device ( 301 to 304 ), which can be actuated at any time due to automatic calculation at a suitable time for opening and closing. Combination according to claim 1, characterized in that in each case the time t ₄ for the opening of the screening device ( 301 to 304 ), the waiting time t ₅ for withdrawing the screening device ( 301 to 304 ) and the throughput speed V _{2 of} the sorting machine ( 10 ) from the predeterminable number N of the products per time unit, the prescribable product length L _P and the movement path L _{3 of} the products in the sorting machine ( 10 ) is calculable. A high speed automatic sorting apparatus comprising: means for inputting a length L _P and a feedthrough quantity N of products to be sorted and a length L _{1 of} a weighing portion and a length L _{2 of} a transporting portion of a weighting balance (c ₎ weighing the products to be sorted ( 20 ); A device for measuring times t ₁ , t ₂ and t _{3 of} the products to be sorted from a start position and an end position of the weight check balance ( 20 ) as well as a start position of a sorting machine ( 10 ) to a speed V _{1 of} the weight check scale ( 20 ) by the formula: V ₁ = L ₁ / (t ₂ -t ₁ ); - a device for the determination of the screening device ( 301 . 302 . 303 . 304 ) for the corresponding action; - a device for assessing whether or not there is a difference between the weight checkweigher ( 20 ) and the sorting machine ( 10 ) a loss of products to be sorted in the event of loss, the sorting machine does not perform any action, and in the event of loss that has not occurred, a calculating means corresponding to the execution amount N has a time t ₅ of maintaining the sorting apparatus ( 301 . 302 . 303 . 304 ) of the products to be sorted and the equation t ₅ = L _P · 60 · F / V₂ a speed V _{2 of} the sorting machine ( 10 ) and determines therefrom an opening time t _{4 of} the disposal device ( 301 . 302 . 303 . 304 ) according to t ₄ = L ₃ × 60 / V ₂ -t _d where t _d is a delay of software and electrical elements, and a time of action of cylinder and mechanical constructions, while L ₃ is a length between the start position and an end position of the sorter and F is a correction factor and wherein the screening device ( 301 . 302 . 303 . 304 ) is operated according to opening time t ₄ and retention time t ₅ . Device according to claim 3, characterized in that it is provided for t _d 100 ms.

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