Vibration bunker loading and orienting device

Contents

Contents

Introduction

1 Process Part

   1.1 Design and description of operation of vibration hopper loading-orienting device

2 Design part

   2.1 Calculation of main elements of VBZOU

   2.1.1 Selection of design parameters of VKZOU

   2.1.2 Part speed and filling factor

2.1.3Structure and    dimensions of the feeder bowl. Shape and pitch of spiral tray

   2.1.4 Calculation of bowl height

   2.1.5 Selection of oscillation frequency

   2.1.6 Determination of optimal mode of VBZOU robots

   2.2 Calculation of mass and moment of inertia of the feeder upper part

   2.3 Calculation of elastic parts of the system

   2.3.1 Calculation of feeder spring suspensions

   2.3.2 Calculation of electromagnetic vibrator

   2.3.3 Calculation of magnetic conductor and winding of vibrator coil

   2.4 Amplitude value of magnetomotor force

   2.5 Calculation of the mass and moment of inertia of the lower part of the feeder

   2.6 Required number of turns of vibrator coil

   2.7 Calculation of vibration feeder shock absorbers

3 Control of VBZOU operation

   3.1 Control during operation with electromagnetic vibrator

Conclusion

List of sources used

Application:

Specification,

A1 - Assembly drawing of VBZOU

Introduction

Automatic loading devices (UAZ) are designed to accumulate and piece-by-piece output in oriented position of blanks or assembly components. They have a significant impact on the structure and design of technological equipment, the level of its automation, automating loading operations, improving working conditions, increasing equipment productivity, creating the prerequisites for multi-site maintenance.

The main tasks solved by UAZ: the accumulation of blanks or assembly components in an undirected position, their orientation according to a certain law; accumulation in oriented position; piece-by-piece department; supply to the processing site .

These types of devices include a device used in automatic systems using orientation of articles in space. These are vibration bunker loading devices (VBZOU), which are the most common loading orienting devices for processing, assembly, control and counting-sorting machines-automatic machines, as well as transport-orienting modules of robotic complexes. This is due to the high performance of VBZOU, their versatility, ease of adjustment and economy.

Vibration hoppers are designed to capture parts from bulk, orient them and then discharge them in oriented position to feeder.

Vibrobunkers are devices with continuous delivery of parts, however, the principle of their operation is very peculiar .

Hopper loading devices are designed and manufactured for a specific range of parts. This is followed by the purpose of the exchange rate

Selection of oscillation frequency

The vibration frequency of the vibration hopper is selected from the following considerations. It is most easy to oscillate the feeder bowls using electromagnetic vibrators operating at a frequency of 50 and 100 Hz small blanks with a bowl diameter of up to 200 mm. For larger vibration feeders, with large sizes of oscillating surfaces and significant oscillation amplitudes, high frequency operation is accompanied by unpleasant noise. In addition, at a lower frequency of oscillation, less rigid and therefore lighter oscillating feeder masses are permissible, which in turn leads to a decrease in the feeder, i.e., a decrease in the total feeder weight and a decrease in the size and power of the vibrator. Therefore, for vibration feeders with a bowl diameter of up to 250 mm, it is advisable to use a frequency of 100 Hz.

Control System Component Design

3.1 Control during operation with electromagnetic vibrator

It is proposed to control the VBZU using a control system based on the KK580MB80A single-chip microprocessor.

Chip KK580BB55 - programmable parallel information I/O device, is used as a general purpose I/O element, which interfaces various types of peripheral devices with the data backbone of information processing systems. Exchange of information between the highway of these systems and a chip of KP580BB55 is carried out via the 8th digit bidirectional channel of data.

The decoder allows you to convert the 4-bit code that came to the A0A3 inputs into a low logic voltage that appears at one of the sixteen outputs of 0... 16.

The decoder has two decryption permission inputs E1 and E2. To allow data to pass to the outputs, a low voltage must be applied to these inputs.

It is used to transmit the control signal to the control device and to save lines connected to the MT.

Chip K155KP1 is a 16-input digital multiplexer that allows using four address inputs A3A0 to transmit data supplied to one of sixteen inputs 160 to output Y.

The low voltage at input A allows data to pass from the inputs. The multiplexer is used to reduce the lines connected to the BC. The schematic electric circuit of a control system on the basis of the single-crystal microprocessor of the KP580BM80A series is submitted on drawing VPV.00.00.00E3.

Conclusion

Vibration devices - trays, bunkers, hoists and accumulators are widely used in mechanical engineering. They offer a variety of advantages over other types of boot devices. These devices are relatively simple in construction. The absence of moving gripping elements in them eliminates the possibility of jamming the blanks, and therefore there is no need for additional safety mechanisms.

VBZOU is indispensable in solving the issue of orientation of parts and loading in the automation of assembly processes, where the shape of finished parts supplied to the assembly is more complicated than the shape of blanks intended for machine processing.

During this course project, VBZOU was designed to orient and issue parts for the further process of automated production. In accordance with the parameters of the part, the design was selected, as well as calculations of the parameters of the components of the vibration hopper loading device were carried out. A device for secondary orientation of parts was selected, and a control system based on a single-chip microprocessor was also developed.

During the course project, theoretical knowledge gained from the study of all sections of the course program was used.

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