SU670507A1 - Counter of timber on transverse conveyer - Google Patents

Description

The meter is intended for use on cross conveyors of double side facing mills, bag forming machines and sorting devices for sawn timber used in the sawmill industry.

Lumber counters on a cross conveyor are known, including, 1LENG sensors of sawn timber, an electromechanical trace, a system, and a recording device 1.

Lumber counters on a cross conveyor are also known, including sensors of presence, grade and length of sawn timber, the latter being connected to the interrogator and installed perpendicular to the longitudinal axis of the conveyor, and a recording device with a relay control 2.

The disadvantage of these meters is accounting mismatches and low reliability of operation.

The purpose of the present invention is to improve reliability.

This is achieved by the fact that the length sensors are located in several rows mixed along the longitudinal axis of the conveyor, as well as the fact that the interrogation device, the presence, grade and length sensors of the sawn timber are made on magnetically controlled

contacts, and the counter is equipped with a software device connected to the sensors of availability, grade, length of sawn timber and a survey device.

FIG. 1 shows a counter meter circuit; in fig. 2 - length sensor; in fig. 3 - interrogator; in fig. 4 is a block diagram of a counter.

The lumber counter on the cross conveyor 1 contains sensors 2 lengths, an interrogator 3 with synchronous transmission 4, sensors 5 for the presence of a board, sensors 6 of a grade, conveyor 7 controls, a program device 8 and a recording device 9.

The sensor 2 lengths are installed under the conveyor and divided into rows, displaced relative to each other, along the conveyor. The length sensors consist of flags 10 that are in contact with the board, at the lower ends of which permanent magnets 11 are mounted, and magnetic sensors on the frame of the sensors 12. The design of the sensors for the presence of the board and the sensors of the brand is the same.

Claims (3)

The length sensors 2 are electrically connected with an interrogator 5, having magnetically controlled contacts 13 on a part of a circle and a rotating rotor 14 equipped with a permanent magnet 15. The number of magnetically controlled contacts in the interrogator is reduced compared to the number of length sensors proportional to the number of rows The rotor is driven by synchronous transmission from the conveyor shaft. Sensors 6 of grade are installed under the lower branch of the control conveyor and actuated by their executive elements — fingers 16 of the crossbar 17. The synchronization of the control conveyor is performed by synchronous transmission 18 from the conveyor shaft 1. Software device 8 consists of control sensors — contactless switches 19 and software disks 20 mounted on the conveyor shaft. The software device makes timely connection to the work of the circuit elements: a series of length, grade, board, and interrogator sensors. The grade sensors, the interrogator and the software device are electrically connected to the registering device 9. The device contains intermediate relays of grade 21, length 22, the presence of a board 23, a control 24 ”counting circuit and the length of lumber. Variety relays are connected to the grade sensors, length relays are connected to the interrogation device, the board presence relay is connected to the board presence sensors, control relay 24 with switches of the program device 19. The length relay 22 is connected with a length counting scheme, including a decade 25 in length for each grade, swept a length 26 relay and counters 27 and 28 for the operating period and for each packet, respectively. The relay 23 of the presence of the board is associated with a piece counting scheme, including counters of 29 tons along each grade, 30 pieces for the operational period and for each package, respectively. Parallel to the counters of pieces 29 and 30 of each type, limiters 31 of the number of boards in the package are installed, associated with the signal relays 32. The contacts of the signal relays are installed in the sound and light signals 33 and the magnetic actuator 34 of the conveyor 1. The lumber counter works as follows. The feed / conveyor board rejects the flags of the 2 length sensors and the sensors 5 of the presence of the board, first one and then another. At the same time, the permanent magnets 11 of the rejected flags trigger the magnetically controlled contacts 12. At the same time as the sensors 2 are long, the finger 16 of the suitable crosshead 17 of the control conveyor 7 turns on the variety 6 sensors and similarly the magnetically controlled contacts of the sensors 21 and then the intermediate 21 relays the recording device 9, preparing the counters of the appropriate grade to receive pulses of pieces and length. Upon further movement of the conveyor / by means of a synchronous transmission 4, the rotor 14 of the interrogator 3 and a permanent magnet 15 fixed on it are rotated. The magnet 15, when the rotor 14 rotates, causes the magnetically controlled contacts of the interrogator 3 to be triggered alternately. The activation of two serially connected magnetically controlled contacts 11 and 13 of the length sensor and the interrogation device triggers the length relay 22, which turns on the number of times corresponding to the number of length 2 deviated board Using a software device & in a predetermined position of the conveyor / and board stops, the contactless switches 19 are switched on alternately and the circuit elements are activated: rows of sensors 2, 5 - 6 and interrogation device 3. Commands from the length relay 22 using a relay of the 21st type and control relay 24 served on the counting decade 25 and intermediate relays 26 of the length of a given grade, and then on the recording counters 27 and 28 of the length of the operating period and for each package. The signals from the relay 23 of the presence of the board with the help of the relay 21 varieties and contactless switches 19 are fed to the counters 29 and 30 pieces of the corresponding grade for the operational period and for each package and at the same time to the counter-limiter 3 the number of boards in the package. When a specified number of boards in the package is reached, the signal relay 32 is triggered, which turns on the package 33 signal about package readiness and stopping the conveyor using a magnetic starter. After the conveyor has been stopped / the readings of the recording counters of the pieces and the length of the package are taken, the package is rolled out of the compartment. At the end of the operational period (shift, at the end of the processing of boards of a given size), the readings of the counters of pieces 29 and length 27 for the operating period for each grade are collected. Claim 1. The sawn-wood counter on the cross conveyor, including sensors, varieties, and lengths of sawn wood, is last-connected to the interrogation system and installed perpendicular to the PPO tolpptype U device with a control relay, different in that reliability of operation, length sensors are located in several rows displaced along the longitudinal axis of the conveyor. 2. A counter according to claim 1, ex., And with the fact that the interrogation device, sensors of the presence, type and length of sawn timber are made on magnetically controlled contacts. 3. A counter according to claim 1, characterized in that it is provided with a software device connected to the sensors of availability, grade, length of sawn timber and a questioning device. Sources of information taken into account in the examination: 1. Baraki Yu. M. Automation of sawmill production. M., “Forest industry, 1970, p. 195-198. 2. USSR author's certificate number 330087, cl. B 65 G 47/38, 1972.