SU856849A2 - Plant for applying tread in the form of band - Google Patents

Description

(54) INSTALLATION FOR THE PROTECTOR IMPLEMENTATION

one

The invention relates to the tire repair industry and can be used in tire repair plants.

According to the main author. St. No. 368081 is a well-known installation for applying a tread with a ribbon, including a screw press with a molding head, mechanisms for fixing the tape on a tire and turning it around its axis and an azimuthal mixing mechanism for a tire with a software device, a trace device, and electrically connected to the software the device of the azimuthal mixing mechanism and the tape fixation mechanism and through the comparison and amplification units connected to the drive of the azimuthal mixing mechanism 1.

However, in the known installation, there is no objective information about the amount of the linear mass of the tread compound in the form of a hot moving narrow belt used to apply a tread on one tire per shift and months on the installations. issuing this information to the upper level of control in order to improve the organization of work and operation of the installations. Low strength and large deformability of hot moving narrow rubber

New tape holding back the immediate weighing of the latter.

The purpose of the invention is to account for the mass flow rate of the tread band to increase plant operation.

This goal is achieved in that the installation for applying a tread with a ribbon is equipped with a metering unit for the mass flow rate of the tread band mounted in front of the tire rotation mechanism around the axis in the direction of movement of the tread band and made in the form of a measuring roller, associated converter and counting device.

FIG. 1 shows the proposed installation, side view; in fig. 2 - a functional schematic diagram of the automatic control system; on

15 of FIG. 3 - block diagram of the metering of the mass flow rate of the tread band.

The apparatus includes a worm head 1 with a forming head, a system of deflecting rollers 2, which serve to guide

20 of a tread band, a fixation mechanism 3 mounted on the lever 4, a mechanism 5 for rotating the sheath around its axis in the form of a roller, a program device comprising a program disk 6 interacting with the sensor 7 of the azimuth movement mechanism 8 on which the longitudinal support 9 is mounted, the device 10 converts the movement of the lever 4 into the movement of the sensor 7, made in the form of a rail and several gears connected to the sensor 11, an air cylinder 12, a retainer 13, a block 14 comparing a given value and an adjustable electronic amplifier 15 minutes, electronically Romashchin amplifier 16, a reducer 17 serving as software for communication device 18 and the drive mechanism 8 moving the azimuth. Sensor 11 converts the deviation of the actual dimensions of the processed cover 19 from the nominal into an electrical signal.

The installation is equipped with a unit 20 for accounting for the mass flow rate of the tread band, mounted in front of the mechanism 5 of rotation of the tire 19 around its axis in the direction of movement of the tread band and made in the form of a measuring roller 21, a converter 22 associated with it, made in the form of a gear 22, disk 23 with holes, a photodiode 24 and an illuminator 25, and a counting device (not shown in the drawing).

The installation works as follows. The prepared carcass of the sheath 19 is put on the cartridge 26 and inflated. The azimuthal displacement mechanism 8 is reset. Sensor 7 is placed against the software disk 6, corresponding to the size of the cover. The lever 4 with the roller rotation roller 5 is in the retracted position. The heated rubber mixture, the exit from the screw press 1 through the rollers 2, block 20, leads to the frame of the lining 19 and at the same time brings the lever 4, which at the same time serves as a sensor of the geometry of the wound lining. The mechanism 8 rotates and the tread is applied over the program disk 6. The lever 4 controls the deviation of the cover from the nominal size. The device 10 transmits oscillations of the lever 4 to the sensor 11.

The sensor 7, which is driven by the azimuthal movement mechanism 8 via the gearbox 17, continuously produces an electrical signal during the process, which is a function of the angle of rotation of the azimuthal movement mechanism 8. This function is set by the configuration of the software disc 6, acting on the probe of the sensor 7. If the dimensions of the tire cover are nominal and the thickness of the applied layer corresponds to the specified value from the software device, the signal goes to the chipper amplifier 16, which, in turn, releases the voltage applied to the drive motor 18 of the mechanism 8 azimuthal displacement.

The speed of rotation of the engine of the azimuth movement mechanism according to the commands of the software device also changes as a function of the angle of rotation and thereby

determines the specified geometry of the applied rubber layer. The sensor 11 outputs signals inversely proportional to the thickness of the applied rubber layer, which are fed to the comparison unit 14, where it is compared with the predetermined value arriving

from the software disc 6 and sensor 7. If the thickness of the applied layer differs from the specified one or if the size of the cover differs from the nominal, comparison unit 14 generates a error signal, which will make the appropriate correction of one or another sign to the system. Correction is maintained until the signal arriving on the feedback circuit from the AND sensor is equal, after which the installation operates only on signals from sensor 7.

In the process of applying a tread band a rubber mixture in the form of a narrow rubber band, the enveloping measuring roller 21 causes the latter to roll without sliding over the object to be measured. The essence of the length measurement is reduced to the determination of the angle of rotation of the measuring roller 21.

The converter outputs to the counting device pulses, the number of which is proportional to the angle of rotation of the measuring roller 21, and therefore, to the amount of movement of the roller relative to the narrow rubber tape. The amount of movement of the Rabbit relative to the moving hot rubber tape, depending on the number of pulses K, issued by the transducer to the counting device during the measurement time, is determined by the formula

gA fi Tff Tf

  T2 | t

where i is the gear ratio of the gear that connects the roller 21 to the rotation angle disk 23;

45d is the diameter of the measuring roller 21,

Zg - the number of holes in the disk 23.

For each sensor, C -f is the price of one pulse in units of length.

Measurements are received in a counting device calibrated in units of mass.

The use of the invention makes it possible to organize accounting and have information on the consumption of tread compound per tire per shift, improve the organization of work, the operation of installations and increase the efficiency of production management.

Claims (1)

Invention Formula The installation for applying the tread ribbon by. auth. St. No. 368081, characterized in that, in order to take into account the mass flow rate of the tread band to increase the operation of the installation, it is equipped with a metering unit for the mass tread band installed before the tire rotation mechanism around its axis along the tread band movement and made in the form of a roller, an associated converter and a counting device. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 368081, cl. In 29 N 17/36, 1973 (prototype).