SU1488859A1 - Device for registering objects transported by conveyer - Google Patents

Description

The invention relates to devices for automatic identification and differential account

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items. The purpose of the invention is to expand the scope of the device by differentiating the number of sets of homogeneous objects by type. For this purpose, the apparatus comprising a reading unit 5, conditioners 6 pulses, AND gate 7, and 8 groups of elements, _in

13, delay element 9, register 10, descrambler 12 and a group of counters

14, a register 11, counters 19-21, comparison blocks 15-18, AND 23-25 elements, setting unit 22, OR element 27, alarm block 26 and one-shot 28 are entered. The device allows counting items in a set, counting sets, identification of sets homogeneous products

as well as the definition of defective kits and marriage alarm.

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The invention relates to computing, namely, devices for automatic identification and differentiated counting of objects, and can be used in automated production control systems; piece products in a multi-range discrete production.

The aim of the invention is to expand the scope of the device by differentiating the number of sets of homogeneous objects by type with a subdivision into suitable sets and scrap and marriage signaling.

The drawing shows a device for recording the production of · ¹ products.

Individual items 1 are served by conveyor 2 to form a set of homogeneous objects. To identify objects on their side surface code marks 3 are applied, containing information about the type of product. In addition, two resolution marks 4 are applied to the surface: one - before the start of the information tags, the second - after, which serve to determine the beginning and end of the recording.

The device contains a reading unit 5, pulse formers 6, the first element And 7, the first group of elements And 8, the delay element 9, the first register 10, the second register 11, the decoder 12, the second group of elements And 13, the counter group 14, the first comparison unit 15 , the second block 16 comparison, the third block 17 • comparison, the fourth block 18 comparison, the first counter 19, the second counter 20, the third counter 21, the unit 22, the second element And 23, the third element And 24, the fourth element And 25, block 26 alarm , element OR 27, one-shot 28.

The operation of the device is as follows.

Individual items 1 using the feed conveyor 2 are fed to the formation of sets (packing in containers, the formation of pallets, etc.). With the passage of the subject 1 by block 5, the code information 3 and the permissive 4 marks are read.

As soon as both enabling labels 4 are placed in front of the first and last reading elements of block 5, the electrical signals from the first and last outputs of block 5 go through the corresponding drivers 6 to the inputs of the first element.

And 7.

Thus, when an object passes by block 5, a logical signal “1” will appear at the output of the first element 7. This signal allows the passage of pulses generated in accordance with the applied information code marks 3 shapers 6 pulses through the first group of elements And 8.

From the output of the first element And 7, the signal about the passage of the object and reading the information is fed to the control input of the second register 1 1.

Upon receipt of the specified signal the following is carried out. Information located at the input of the second register 11, i.e., information from the output of the first register 10, is entered into the second register 11. Thus, the control signal from the element And 7 provides for recording information in the second register, namely the information in the first register '

10 and recorded there earlier - when passing the previous item, transferred to the second register and recorded in it. The second register thus serves as a register of previous information; at its output, after passing the current item, information was recorded on the characteristics of the previous item.

In addition, the signal about the passage of the object and the reading of information, the signal from the output of element 7, goes through the element 9-delay to the control input of the first register 10.

Upon receipt of the specified signal the following is carried out. Information from the outputs of the first group of elements And 8, located at the input of the first register 10, is entered into the last and recorded in it. The first register thus performs the function of registering current information; on its output is read information about the characteristics of the current object. As a result, at the output of the first and second registers 10 and. 11 is, respectively, information about the characteristics of the current and previous items.

Therefore, in the first and second

Registers 10 and 11 store information about the types (characteristics) of the current 488859

The object passing by block 5 of the readout, and the previous object during the passage of each successive object, a cyclic shift of information occurs.

From the outputs of the first and second registers 10 and 11, the information contained in them and determining the characteristics of the current and previous items goes to the first and second groups of inputs of the first comparison unit 15, performing bitwise comparison of codes recorded in the first and second registers. In this case, in the first comparison block 15, the inequality condition is checked, i.e. a logical "1" is formed at its output if the codes do not match (the characteristics of the current and previous items are different); otherwise, if the codes match (the current and previous items are identical), a logical "0" is formed at the output of block 15.

From the outputs of the second register 1 1, the code fixed in it goes also to the inputs of the decoder 12, which, in accordance with the code, sets the resolution level at the input of one of the elements of the second group of elements And 13.

The signal about the passage of the object past the reading unit and the reading of information - the signal from the output of the first element I 7 also goes to the input of the first counter 19, which counts the pulses that characterize the passage of individual objects past the reading unit 5. Thus, the first counter 19 performs the functions of a counter of the number of items inside the set: the contents of the specified counter vary from 0 to Ν, where N is the specified number of items in the set.

From the output of the first counter 19, a signal characterizing the value of the contents of the counter is fed to the input of the second comparison unit 16, which compares the value of the contents of the counter with the unit. In this case, in block 16, the inequality condition is checked, i.e. at its output a logical "1" is formed, if the value of the contents of the counter is different from one; otherwise, a logical "0" is formed at the output of block 16. So on

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the output of the second comparison unit 16, the logical "1" is formed when any item except the first passes in each set; with the passage in each set of the first object at the output of block 16, a logical "O" is formed.

The signal from the output of the second block 16 comparison is fed to the input of the second element And 23, to another input of which receives a signal from the output of the first block 15 comparison. Then, if the codes of the current and previous items do not match and the current item is not the first one in the set, i.e. from the first 15 and second 16 comparison blocks arrive logical "1", at the output of the second element And 23 forms "1",

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in other cases, the output of the element And 23 is formed logical "0".

Here, it is essential that two conditions are checked simultaneously: the inequality of the codes of two successively passing objects and the difference in the sequence number of the item in the set from 1. Due to the fact that sets of homogeneous objects of various types can be sequentially formed, the first item in the set may differ in characteristics (code read by the reading unit) from the characteristics of items in the previous set, however this situation does not mean the appearance of a marriage.

The situation in which the logical “1” is formed at the output of the element 23 corresponds to the appearance inside the set of a foreign object whose characteristics are different from the characteristics of other objects.

At the same time, a kit containing heterogeneous objects refers to rejected ^ the possibility of removing a foreign object from the kit in the process of its formation is absent. As a consequence, the formation of the kit continues, however, in the future, the kit thus formed is rejected and transferred to the disbandment.

From the output of the second element And 23, the signal is fed to the input of the second counter 20, which functions as a counter of the number of changes in the types of objects inside the set being formed. In case the set being formed

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refers to suitable products, i.e. consists of homogeneous objects, the value of the contents of the counter 20 is zero. In the event that the kit being formed is related to marriage, i.e. contains one or more foreign objects, the value of the contents of the counter 20 is nonzero and can take values from 1 to (Ν -1), u

where N is the specified number of items in the set.

From the output of counter 20, the signal, which characterizes the value of the contents of the counter, is fed to the Input of the fourth- 15th comparison unit 18, which compares the value of the counter content to zero. At the same time, if the value of the contents of the counter is zero, then at the first output of the block 20 1ka 18 a logical "0" is formed, and {at the second output - the logical "1".

Otherwise, at the first output of the comparison unit 18 a logical "1" is formed, at the second - a logical 25 "0". Thus, at the second output of the fourth comparison block 18 a logical "I" is formed only if the set being formed contains only .homogeneous objects. Accordingly, at the first output of the fourth comparison unit 18, a logical "1" is formed only if the formed set contains foreign objects. ^ 5

From the first output, block 18, the signal arrives at the first input of the third element AND 24. At this input, the logical "1" will be only in the case of falling into the formed set of alien-. ddnogo of the subject., i.e. in the case of the formation of a defective set.

From the second output of block 18, the signal arrives at the first input of the fourth element And 25. At this input, the logical "1" will be only in the case of forming a set consisting of homogeneous! items, i.e. in the case of forming a suitable set.

At the second inputs of the third and fourth elements And 24 and 25 receives a signal characterizing the end of the formation of each of the next set. The specified signal is formed as follows.

From the output of the first counter 19, the signal characterizing the value of the counter content enters the input of the third comparison block 17, which compares the value of the counter 19 with the specified number of items in the set. The required number N of items in the set is determined by the setting unit 22. At that, in block 17 verification of the equality condition, i.e. a logical "1" is formed at its output if the content of the counter 19 is equal to a given number N of items in the set, otherwise the logical "0" is formed at the output of block 17. Thus, the logical "1" is formed at the output of the third comparison block 17 the completion of the formation of each set, i.e. with the passage in each set Ν-γο of the subject.

When the third element AND 24 arrives at the second input of the end of the formation of the pallet and when the specified element arrives at the first input (logical "1") from the first output of the comparator unit 18, the logical element "1" is formed at the output of the third element 24, corresponding to the release of the set being defective; otherwise, the output of the element 24 is formed logical "0".

The signal from the output of the third element And 24 is fed to the input of block 26, signaling to the technological personnel the release of the defective set; to the input of the counter 21, providing a count of the number of defective sets.

When a fourth element And 25 arrives at the second input when the set is completed, and when the specified element arrives at the first input (logical "1") from the second output of block 18, the logical ”1” is formed at the output of the fourth element And 25, corresponding to the release of the set, containing N homogeneous products, 'otherwise a logical "0" is formed at the output of the element 25.

From the output of the fourth element And 25, the signal (logical "1") goes to the second inputs of the second group of elements And 13 and then through one selected element from group 13, at the input of which a permission level is set according to the decoder code 12, is allowed to be added with selected counter

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from group 14, providing the account of developed production of the given type. If the output element 25 is formed a logical "O", then the specified signal blocks the second $

group of elements And 13, i.e. summation of sets that are defective, counters 14 is not performed. ten

From the outputs of the third and fourth elements, And 24 and 25, signals also arrive at the first and second inputs of the element OR 27. Then, when the processing of information about the completed set of items (valid or defective) is completed, the logical "1" is formed at the output of the OR 27 element . The specified single signal from the output of the element OR 27 triggers a one-shot 20, which generates a short pulse arriving at the control inputs of the first and second counters 19 and 20 and resetting it to zero.

Thus, the preparation of 25 counters is carried out for counting the items in the next set and for counting the number of changes in the types of items inside the next set.

Thus, the proposed device performs a differentiation according to the types of items, accounting for homogeneous sets of manufactured products, as well as accounting for the number of rejected sets. This accounting ^ 5 is especially important and necessary at the final stage of production.

Claims (1)

Claim 40 A device for counting items transported by a conveyor, containing a reading unit, the outputs of which are connected to the inputs of pulse shapers, the outputs of the first and last of which are connected to the inputs of the first element And, the output of which is connected to the input of the delay element and to the first inputs of the first group of elements And, the second the inputs of which are connected 50 with the outputs of the corresponding pulse shapers, the outputs The first group of elements And connected to the first inputs of the first register, the decoder, the outputs of which are connected to the first inputs of the second group of elements And, the outputs of which are connected to the inputs of a group of meters, characterized in that, in order to expand the scope of the device by differentiating the number of sets of homogeneous items by type, entered into the second register, comparison units, the second, third and fourth elements AND, the element OR, setter, one-shot, counters and signaling unit, the output element of the element ki connected to the second input of the first register, the outputs of which are connected to the first inputs of the first comparison unit and the second register, the outputs of which are connected to the inputs of the decoder and the second inputs of the first comparison unit, the output of which is connected to the first input of the second element And, the second input of which is connected to the output of the second comparison unit, the output of the first element And is connected to the second input of the second register and to the first input of the first counter, the output of which is connected to the Inputs of the second and third comparison blocks, the output of the last The first of which is connected to the first inputs of the third and fourth elements AND, the output of the last of which is connected to the second inputs of the second group of elements AND to the first input of the OR element, the output of which is connected to the second input of the first counter and the first input of the second counter, ' The second input of which is connected to the second element And, and the output to the input of the fourth comparison unit, the first output of which is connected to the second input of the fourth element And, the second output - to the second input of the third element And, the output of which Inonii to the alarm input block to the input of the third counter and a second input of the OR gate, ramp output connected to the second input of the third comparator unit.