SU877589A1 - Device for checking and registering products in abrasive tool forming - Google Patents

Description

The invention relates to computer systems in automation and is intended to automatically count abrasive tools produced on molding presses in the abrasive industry. A device for counting parts manufactured on press equipment is known, which contains an IC7 power source, a vibration sensor, a trigger with an output relay, a control contact, and a detuning element 1. Its disadvantage is the possibility of giving false information by a vibration sensor due to the imperfection of the electrical circuit. The technical essence of the present invention is a device for counting working strokes of a press, which contains a sensor for molding sand, a molding sand dispenser, a press condition sensor, sensors pressure, vibration sensor, shaper and memory block 2 The disadvantage is that the device cannot be used to control and record when forming an abrasive tool made of white and gray electrocorundum, since the number of pulses recorded in the block coincides memory and pulse counter in the manufacture of parts, both fit and defective. The purpose of the invention is to improve the accuracy of the device. The goal is achieved by the fact that a device for monitoring and recording products during the molding of an abrasive tool, which contains sensors for the presence of the molding mass, a molding mass dispenser (at a press conditioner, a pressure sensor, a vibration sensor, a former and a memory unit, an illuminator and Photo sensor, current transducer, BANGE item, operation mode switch, current parameter value forming unit, comparison unit, output signal forming unit, suitable production counter, defective product counter and the control unit of the molding mass dispenser, the output of the photo sensor through the current converter is connected to one of the inputs of the BAN element, the other input of which is connected to the output of the former, and the output of the BAN element through the switching of the operating mode is connected to the input of the memory block and the input of the block forming the current value of the parameter which through serially connected comparison unit and output signal shaping unit are connected to the inputs of a suitable production counter, a scrap counter and a form metering control unit The active mass, the output of which is connected to the molding mass dispenser, the outputs of the presence of the molding mass, the press state sensor, the pressure sensor and the vibration sensor are connected to the Shaper inputs.

The drawing shows a block diagram of the device.

The circuit contains a molding mass sensor 1, a press state sensor 2, a pressure sensor 3, a vibration sensor 4, a connected driver 5, an inspection camera b, on the side surface of which an illuminator 7 and a photo sensor 8, a current converter 9, a BAN element 10, a switch are installed. 11 operation modes, a memory unit 12, a unit for generating a current parameter value 13, a comparison unit 14, an output signal generating unit 15, a molding material dosing control unit 16, a suitable production counter 17, and a reject counter 18.

The dosing of the molding material is carried out by the molding mass dispenser 19, the molded parts are exposed to the receiving area 20 under the controlled products.

The device works as follows.

Before starting work, erase information in memory block 12. The operation mode switch 11 is set to the setting position, the current output of the converter 9 is connected through the BANKS element 10. The press is turned on and the reference part is molded with a weight error 4-6 times smaller than provided by the technology, and set to the receiving part pad 20 in camera b inspection. The light beam ot of the illuminator 7, having reflected from the surface of the monitored part, is visible on the photosensor 8. The color of the part determines the intensity of the reflected light flux falling on. a photosensor 8, and a magnitude of a photocurrent, which is then converted in a current converter 9.

The source signals of the sensor 1 for the presence of the molding mixture, the sensor 2 for the press, the sensor 3 for the pressure, the vibration sensor 4 are processed in block 5. In case the part is pressed on a normally working press, the output signal of the logic unit 5 is formed , allowing the passage of the signal through the element BANGE 10 and the switch P mode of operation to the input of the memory block 12. In memory unit 12, information is recorded corresponding to the surface color of the reference part.

In case of violation of the technological regulations of the molding at the output of the block 5, a signal is formed that prohibits the passage of the signal through the BANCH element 10 from the current converter 9, and the corresponding signaling and blocking are simultaneously turned on.

Q Then, the operation mode switch 11 is shifted to the item counting position, the current converter 9 is connected to the unit 13 for generating the current value of the parameter.

Outputs of memory block 12 and block 13

5 forming the current value of the parameter is connected to the inputs of the comparison unit 14, in which the information recorded in the memory block 12 and the block 13 of the formation of the current value of the parameter is compared. There are three cases. When a part is molded, slightly different in weight from the reference, at the output of comparator block 14

5, a signal is supplied to the input of the output signal generating unit 15, at the output of which a signal is generated, which is detected by the counter 17 of the suitable product. When formulating a part with a changed weight, the color of the part changes: when the weight increases, the formed part turns white, and when it decreases, it darkens.

So, for example, when a part is hinged 130.5 ± 2.0 g, a change in the part color when the weight is + 3 g is visually noticeable. Phenomenon laid in basis of the proposed device, due to the fact that

By increasing the sample, the number of grains of white or gray alumina per unit of the observed area of the part increases, and vice versa. . .

5 Binder and water glass, constituting 12-17 wt.% Of the molding composition, have a darker color than the grains of white and gray alumina. ,

Q When forming a part with a variable hitch value within the limits allowed by the technology, the output of the output signal shaping unit 15 generates a signal recorded by the suitable production counter 17 and a signal fed to the molding weight meter control unit 16. The output of the dispenser control unit 16 is used to change the reference of the molding material dispenser 19.

Claims (2)

When forming a part with a weight exceeding the allowable limit, a signal is generated at the output of the output signal forming unit 15. registered by the counter 18 of defective products, and a signal applied to the input of the molding mass dispenser control unit 16. The defective part is removed from the flow. At present, each tenth part removed from the press is weighed by hand on the scales, and when the size of the sample is out of tolerance, the volume of the dosed mass is also manually controlled. The deviation of the parts hinge leads to a corresponding deviation of one of the main characteristics of the abrasive tool - hardness: in the same batch of finished products there is a large variation in hardness, which creates considerable difficulties in its use. The use of the device makes it possible to automate the process of controlling and recording the production of abrasive tools on presses working in flow-mechanized lines in the production of abrasive tools, which leads to an increase in labor productivity, reduction of scrap and reduction of service personnel. Claims An apparatus for monitoring and recording products when forming an abrasive tool, comprising sensors for forming mass, a molding mass dispenser, a press sensor, a pressure sensor, a vibration sensor, a former, and a memory unit, characterized in that An illuminator, a photo sensor, a converter, a current, a BAN element, an operation mode switch, a forming unit of the current parameter value, a comparison unit, an output signal generating unit, a counter g are entered into it. dnoy..produktsii ,, counter defective products and the control unit. a Maccai molding dispenser, the photosensor output is connected via a current converter to one of the inputs of the BANGE element, the other input is connected to the output of the imaging unit, and the output of the BAN element is connected to the memory unit input and the input of the current parameter value generating unit, the outputs of which are through a serially connected comparison unit and an output signal shaping unit are connected to the inputs of a suitable counter, a product, a reject counter and a control unit, a molding mass dispenser, the output of which is connected to the molding mass dispenser; the outputs of the sensor for the presence of the molding mass, the sensor of the spring state, the pressure sensor and the vibration sensor are connected to the inputs of the forming unit. Sources of information taken into account in the examination 1. USSR author's certificate 365723, cl. G 07 C 3/08. 2. USSR author's certificate 529470, cl. G 07 C 3/10. (Prototype)