SU1456773A1 - Device for measuring off pre-set length of continuous material - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to improve the accuracy of measuring a predetermined length of lengthy materials by achieving the fact that the device is equipped with a ratchet wheel 9 fixed on axis 1 on one side of the perforated disk 3, and fixed on axis 1 on the other side of it two friction disks 11 and 12, Disk 12 is spring-loaded relative to the disk 11 in the axial and angular directions, respectively, of the springs 13 and 14. When the feed is turned on, the roller 18 presses the material 17 against the measuring wheel 2 and it begins to rotate. Through the common axis 1, the rotational moment from the measuring wheel 2 is transmitted to the perforated disk 3. Light from the illuminator 5 through the holes 4 of the disk 3 and the holes 16 in the casing 15 penetrates the photodetector 6 impulsively. Then, the pulses of the converter 7 are fed to the counter 8, where the required countdown occurs the number of pulses corresponding to a given length of the material, and issuing commands to the cutting mechanism. After the end of metering, the feed of material 17 is stopped, the measuring wheel 2 and the perforated disk 3 are stopped, and the spring 14 through the friction disks 11 and 12 returns the disk 3 to the initial position corresponding to the starting point of the measurement of a given length of material. 3 il. V R. O1-m about:% Y. /

Description

one

The invention relates to a measuring technique

The aim of the invention is to improve the accuracy of the frosting of a given length of the length of 1 material.

Fig. 1 shows a device for measuring a predetermined length of lengthy materials, a general view; FIG. 2 is a view A-fig, 1; FIG. 3 is a view B of FIG. 1;

A device for measuring a given length of lengthy materials contains a measuring wheel 2 mounted on a common axis and a perforated disk 3, whose perforations are made in the form of circular holes 4 located around the circumference of disk 3, the illuminator 5 is located on one side of disk 3 at the level of holes 4 on the other hand, the illuminator 5 opposite the photodetector 6 and the converter 7 and the counter 8 connected in series with it. The perforated disk 3 is equipped with a ratchet wheel 9 mounted on a common axis 1, with a number of teeth equal to The number of holes 4 communicating with the pawl 10. On the other side of the perforated disk 3 on a common, two-axis friction disc 1 mounted. The first disk 11 is fixed directly on the perforated disk 3, and the second disk 12 is spring-loaded relative to the friction disk 11 in the axial direction by means of a spring 13 and in the angular direction by means of a pr / zhina 14. The entire mechanism of the device is placed in the casing 15, in which at the level of the holes 4 the disk 3 is made opposite to each other two holes 1; The measured material 17 is pressed against the measuring wheel 2 by a spring-loaded roller 18,

The device works as follows.

When turned on, the roller 18 presses the material 17 to the measuring wheel 2 and creates with them the necessary grip, which leads the measuring wheel

2 rotation. Through a common axis 1, the torque from the measuring wheel 2 is transmitted to a perforated disk.

3, while through the holes 4 disc

3 and the holes 16 in the housing 15. the light from the illuminator 5 penetrates the photodetector 6 impulsively with a frequency depending on the speed of rotation of the disk 3 and the frequency of its location on it

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4, Then the pulses through the converter 7 are fed to the counter 8, where the required number of pulses, corresponding to a given length of material and the command of the cutting mechanism are counted. At the same time, at the initial moment of rotation of the perforated disk 3 due to the coupling between the friction disks 11 and 12 created by the spring 13, the spring 14 is twisted, and the spring 14 stops spinning when the clutch force between the friction disks 1 and 12 is balanced by the force of the twisted spring 14 After the end of the measurement of a given length of material, the supply of material 17 is stopped, the measuring wheel 2 and the perforated disk 3 are stopped, and under the action of stored energy, the spun spring 14 through the friction The disks 11 and 12 begin to rotate the perforated disk 3 in the opposite direction as far as the pawl 0 allows, before it engages with the ratchet wheel 9, and thus the perforated disk 3 is returned to the precisely defined position corresponding to the starting point of the measurement. of a given length of material, and the measuring wheel 2, in turn, returns back the value of the length of the material, which was formed as a result of the inertia of the actuators. After this, cutting of precisely measured material takes place.

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Claims (1)

40 claims five 0 five A device for measuring a predetermined length of lengthy materials, including a measuring wheel and a perforated disk mounted on a common axis, mounted on each side of the disk illuminator and photodetector with a transducer and counter, about tl and which is so that, in order to improve the accuracy of measurement , it is equipped with a ratchet wheel mounted on an axis on one side of a perforated disk, and mounted on an axis on the other side of a perforated disk with two friction disks, one of which is rigidly connected to a perforated disk, and the second is spring-loaded in the axial and angular directions relative to the first i5 Editor G. Volkova Compiled by R.Zhalnerovich Te xp ed M. Hod a nich Order 749A / 38 Circulation 683 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, st. Project, 4 i.H Proofreader G. Reshetnik Subscription