SU1216663A1 - Arrangement for measuring mass of continuous blanks - Google Patents

Abstract

The invention relates to weighing equipment and is intended to determine the mass of blanks moved by conveyor transport, for example, in the manufacture of H rubber products. The purpose of the invention is to increase accuracy by providing measurement of the mass of the workpiece in separate parts and expanding the functionality by obtaining information on the length of the workpiece. For this, the command processing unit 7 is designed as a generator 13 connected via inverters 14 and 15 with counters 16 and 17 pulses. Photorelays 3 and 4 are connected respectively to the pulse distribution unit 28 and information rewriting blocks 29 and 30, the computing device control unit 8 9. The measuring device 5 measures the masses of individual sections of the workpiece and transmits the information to the meter 26 on the number of measurements, and to the counter 27 about the mass of the weighted area. As a result, it accumulates information corresponding to the linear mass of the preform. As soon as block 28 prohibits the passage of information from device 5 (when photo relay 3 is released), block B is started, which transmits control commands and information from memory blocks 22-25 to computing device 9, then to indicators 11 and 12, respectively, mass and length blanks. 1 il.

Description

one

The invention relates to a weight measuring technique and is intended to determine the mass of lengthy workpieces moved by conveyor transport, for example, in the manufacture of rubber products.

The purpose of the invention is to improve accuracy by providing measurement of the mass of the workpiece by separate parts and expanding the functionality by obtaining information about the length of the workpiece.

The drawing shows a block diagram of a device for measuring the mass of long workpieces.

The device contains a weighing unit with a base 1 and a conveyor 2 in the form of a roller table. The photo relay 3 and 4 is installed at the beginning and end of the roller table. The weight-receiving output of the node is connected to a force-measuring device 5, the output of which is connected to the electronic device 6. The latter contains serially connected command processing unit 7, computing device control unit 8, computing device 9 and a display unit 10 containing indicators of mass 1 I and length 1.2.

The command processing block comprises a generator 13 connected via inverters 14 and 15 to two counters 16 and J 7 pulses. The photorelays 3 and 4 are connected to the inputs of the flip-flops 18 and 19 of the command processing unit 7. The outputs of the flip-flops are connected to inverters 14 and 15. The feed units 20 and 21 of block 7 are connected in series. The input of the driver 20 is associated with the second output of the trigger 18, and the output with the blocks 22-25 of memory. The output of the imaging unit 21 is connected to counters 16,17,26 and 27 and the triggers 18 and 19. Photocell 3 and 4 are also connected to the input of the pulse distribution unit 28, the outputs of which are connected to two information rewriting blocks 29 and 30 and the input of the computing device control unit 8 .

The remaining inputs of block 8 are connected to memory blocks 22–25. The force measuring device 5 is connected to counters 26 and 27 via blocks 29 and 30, the output of each of the counters is connected to the corresponding memory block.

20

16563i

The device works as follows.

When the workpiece moves along the production line, its front edge 5 covers first the photo relay 3, then enters the conveyor 2 of the weighing receptacle, and then closes the photo relay 4.

When overlapping with the front edge o of the workpiece photo relay 3, the signal from photo relay 3 overturns trigger 18 and gives permission for the passage of pulses from generator 13 through inverter 4 to counter input 17 n through tS inverters 14 and 15 to counter input 1 6. .

When the front edge of the workpiece overlaps the photo relay 4, the trigger 19 overturns and the block 28 is triggered. The inverse output of the trigger 19 prohibits the passage of pulses into the counter 16, and the outputs of the block 28 allow the information to pass through the blocks 29 and 30 of rewriting the information and prohibits the operation of the block 8. Force meter 5 with a given periodicity, for example, after 0.2-1 s, it measures the mass of individual parts of the workpiece and transmits information to the counter 26 about the number of measurements made (n), and to the counter 27 about the weight of each weigh (t; |. As a result, it accumulates information corresponding to the linear mass of the workpiece. The subsequent movement of the harvests leads to the release of the photo relay 3, the signal from which returns the trigger 40 to the initial state, the direct output of which prohibits the passage pulses from the generator 13, and the driver 20 misses (the driver is triggered by the transition 0-1j.

 which gives the command to rewrite the inrm from counters 16,17,26 and 2 into memory blocks 22-25 and the falling edge includes shaper 21, which generates the Reset command,

50 coming to the triggers 18; t 19 and counters 16,17,26 and 27.

When releasing the photorelay 3 block 28 prohibits the passage of information from the force-measuring device 5

55 and starts the control unit 8 of the computing device 9.

EPOK 8 in accordance with the program of work gives control k30

Mandates and information from blocks 22 to 25 of memory to the input of the computing device 9.

Computing device 9 processes the information obtained by the formulas

, b-N .- S TT r

where I- j - the length of the workpiece;

N - is the number of pulses received by the counter 17 during the whole billet passing through the photo relay 3;

NC is the number of pulses received in the counter 16 during the passage of the leading edge and the workpiece from the photo relay 3 to the photo relay 4;

L is the distance between the photo relay 4 and 3;

 weight of the workpiece;

 - mass of the ith plot

goods; n is the number of measurements.

The results from device 9 are received by the mass indicators t1 and the length of the workpiece 12. After the photo relay 3 has been released, the device is ready to measure the next workpiece.

Claims (1)

Invention Formula A device for measuring the mass of long workpieces, containing two photorelays, a weight-bearing unit with a base and a conveyor, resting on a lever mechanism connected by a force gauge216663 a device whose output is connected to an electronic device containing a serially connected command processing unit, 5 a control unit of a computing device, a computing device and a display unit with a mass indicator, which is different in order to increase 10 accuracy by measuring the mass of the workpiece separate parts and expanding the functionality due to obtaining information on the length of the workpiece, in it the unit for testing 15 commands is designed as a generator connected via inverters with two counts two pulses connected to the outputs of the inverters, two connected-by-successive coneers, the input of the first of which is connected to the direct output of the first trigger, the unit of distribution of pulses, the outputs of which are connected to two blocks of rewriting information connected to the third and the fourth counters im-. pulses, and the output of each of the counters is connected to the corresponding memory block, the output of the first driver is connected to all the memory blocks, the output of the second driver is connected to the inputs of all counters and triggers, VHOF1 of the pulse distribution unit and the trigger blocks rewriting information — to the output of the force-measuring device, the inputs of the impulse distribution unit, and the outputs of the memory units of the connection; with the inputs of the control unit of the computing device, and the display unit is equipped with a length indicator. 35 40 Compiled by V.Shirshov PeflaKfop I. Derbak Tehred A. Babinets Corrector V. Sinitska Order 994/52 Circulation 706 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 11.3035, Moscow, Zh-35, Raushsk nab., 4/5 f Branch PPP Patent, Uzhgorod, st. Project, 4