System design of the hottest push out logistics so

System design of push out logistics sorting experimental device

sorting is the operation of allocating many goods to the set site from different places and units according to varieties. According to the different means of sorting, it can be divided into manual sorting, mechanical sorting and automatic sorting

at present, automatic sorting has gradually become the mainstream, because automatic sorting is completed by automatic sorting device according to people's instructions from the time when goods enter the sorting system to the designated distribution position. This kind of device is a conveying device that sends the goods arriving at the sorting position to other places by the control device and computer network that receives the sorting instruction information. Due to the automatic operation of machinery, the sorting processing capacity is large, and the number of sorting and classification is also large

the main purpose of the design is to consider the needs of school teaching and research units, in order to better cooperate with students to learn the relevant knowledge of the sorting system. Understand the latest sorting technology and equipment of the current logistics department. The sorting technology in China has just started. Only in the post office of the post and Telecommunications Department, there are some small semi-automatic tilt tray sorting for parcel sorting. In other industries, there are few sorting systems of a certain scale and level. There are not many experimental devices used for sorting in schools and scientific research institutions. The development of society requires us to have this knowledge. Therefore, it is necessary to study the design of logistics sorting experimental device and experimental system

1. Sorting experimental device design

push out logistics sorting experimental device and the design of polyurethane dynamic identification experimental system with sorting signal as polymer family, focusing on the design of sorting push out device and control signal. There are many kinds of sorting devices, such as tilting tray sorting device, horizontal push belt sorting device and roller sorting device. Considering that this design is the design of push out logistics sorting experimental device and sorting signal automatic identification experimental system. The sorting experimental device adopts the dynamic roller conveying device, and the driving device adopts the combination form of motor and planetary cycloid pinwheel reducer, so that the roller rotation is in an active state, and the running state can be strictly controlled to accurately, stably and reliably convey goods at the specified speed. The power roller conveyor generally adopts chain transmission, and the single chain transmission structure is compact, which is suitable for light load, low speed and continuous operation. Double chain transmission is suitable for occasions with large load, high speed and frequent starting and braking. Therefore, single chain transmission is selected in this design

the signal acquisition of the sorting system mainly depends on the color sensor. Because the color of each block is different, it can be distinguished whether to implement sorting operation according to the change of color value. Since the sorting system is only required to distinguish the changes of color values, there are no specific requirements for the color calibration of items. There are three specific color measurement methods: direct, transmission and reflection. Considering that the system is used in the article sorting system, the reflection measurement method is used

install a color sensor on the sorting branch. When measuring the color by adjusting the working point of the color sensor, it is necessary to calculate the signal output size of the signal acquisition circuit to obtain the color value of the measured object block, compare the measured color value with the color value of the object block in the single chip microcomputer, obtain the most relevant value between them, and determine the color of the measured value. If sorting is required, the pneumatic actuator is driven

the pneumatic actuator uses the magnetic cylinder. When the control system sends a control signal, the speed control circuit of the magnetic cylinder adopts the exhaust throttling speed regulation mode When the color sensor recognizes an object of a certain color, start the power mechanism, and the magnetic cylinder sleeve drives the slider to push the object to the designated branch port When this action is completed, the piston returns to the original position and waits for the next sorting action to realize the sorting of goods. Considering the compactness of the experimental device, the magnetic piston rod free cylinder can save 44% space than the ordinary cylinder, and has good sealing performance and good action stability

(1) design of roller conveying device

roller conveying device can convey finished goods with a flat bottom along a horizontal or small inclined angle. Compared with other conveying devices, in addition to its simple structure, reliable operation, convenient maintenance, economy, energy saving and other advantages, the most prominent thing is that it can be well connected and matched with the production process, and has a variety of functions

according to the actual situation of this design, GZT type roller conveyor is selected, and dynamic, cylindrical and fixed axis roller devices are adopted. The power roller conveying device itself has a driving device, and the rotation of the roller is in an active state, which can strictly control the running state of the goods, accurately, stably and reliably convey the goods at the specified speed, so as to realize the automatic control of the conveying process. It is used to measure and record the change of signal voltage. The single chain transmission structure is compact and suitable for light load, low speed and continuous operation. The cylindrical roller conveyor has good versatility, and can transport all kinds of items with a flat bottom, allowing the width of items to change in a large range. The roller of the fixed axle roller conveyor rotates around the fixed axle. The rotating part of the roller has light self weight, small running resistance, and good overall assembly between the roller and the frame

(2) structural design of magnetic cylinder

when the air source pushes the magnetic piston, the piston drives the support outside the cylinder barrel to move together. The upgrading of relevant downstream industry technical standards that drive the load on the support depends on the magnetic force of the magnetic piston. It is required to bear a certain load, and a certain magnetic force must be designed

the piston of the magnetic cylinder moves axially in the cylinder barrel, and the support moves axially outside the cylinder barrel, so there are requirements for roughness and shape tolerance inside and outside the cylinder barrel, otherwise it is easy to creep, increase the service pressure, etc

the piston of the magnetic cylinder and the permanent magnet on the moving support (a pair of magnetic steel inside and outside), and the magnetic line of force closes along a certain path to form a circuit. Among them, a magnetic flux loop is formed along the magnetic disc and the working air gap (cylinder wall thickness), and the magnetic force generated by it synchronizes the support and piston. The air gap that has not passed through the work does not work, so the smaller the magnetic flux leakage is, the better. The cylinder wall is required to be thin and non-magnetic materials are required, but the cylinder wall is too thin, and the mechanical strength is not enough. Generally, both mechanical strength and magnetic flux leakage should be considered

the magnetic cylinder support (moving body) moves synchronously with the piston by magnetic force. In order to keep the three from separating, the axial load of the cylinder should be less than the magnetic force. Generally, when considering the selection, it is better to increase the actual load by 15 ~ 20%

(3) speed control circuit design of magnetic cylinder

bidirectional speed regulation circuit with one-way throttle valve. Adopt exhaust throttle speed regulation mode. When the color sensor recognizes a block of a certain color. Start the power mechanism, and the piston sleeve drives the sliding block to move laterally, pushing the block to the specified position. When this action is completed. The cylinder pushes the piston back to the original position and waits for the next sorting action

(4) design of control system

this design is controlled by single-chip microcomputer. The signal identified by the sensor is sent to the single-chip microcomputer after a/d conversion. Through the compiled program, it is actually backward to conduct the tensile experiment to know the driving function of the sample fracture. After the solenoid valve is energized, the corresponding air pressure circuit is connected. The movement of the magnetic cylinder drives the slider to horizontally push the block to the designated sorting port

2. Main conclusions and characteristics

1 The automatic sorting push out experimental device is to miniaturize the sorting system based on the principle of on-site sorting system. The key point of the sorting experimental device is the design of the sorting pushing device and the automatic identification of the control signal

2. This paper discusses the principle, method, design idea of pushing device and common control mode of sorter at present. Through comparison and analysis, this design selects 8031 as the main design, obtains the identification control signal through the color sensor, and the sorting push out device sorts the items through the slider according to the command of the control signal

3. For the designed sorting experimental device, the knowledge learned should be applied to practice in the design, and attention should be paid to making the design structure simple, practical, economical and processable