Glass edging energy-saving system

Abstract

The utility model belongs to the technical field of glass processing machinery, and particularly relates to a glass edge grinding energy-saving system which comprises a power grid, an AFE unit and an edge grinding working unit, the power grid outputs three-phase alternating current, a main control board is installed on the AFE unit, the input end of the AFE unit is connected with the power grid, the edge grinding working unit comprises a motor and a frequency converter, a main shaft and a grinding wheel are installed on the motor, and the frequency converter is connected with the main control board. According to the phenomenon that the motor has different output rotating speeds due to different working states during glass edge grinding processing, rotation energy generated when the output rotating speeds of the motor are reduced or the motor is braked and stopped is utilized, and the motor is connected with the AFE unit through the frequency converter. And the frequency converter feeds power to the AFE unit, and then the AFE unit feeds back the energy to the power grid, so that the energy-saving effect is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of glass processing machinery, and particularly relates to a glass edge grinding energy-saving system. Background Technique

[0002] In a glass edge grinding production line, a traditional asynchronous motor is usually used for the glass edge grinding process, and the motor is kept at a rated output power, and the grinding wheel on the motor always maintains a rated working speed. However, due to the gaps between the glass to be processed placed on the production line, there is a phenomenon that when the grinding wheel is at the gap, it still maintains the working speed but does not perform edge grinding on the glass, resulting in the defect of energy waste.

[0003] The utility model designs a glass edge grinding energy-saving system to solve the above problems. Content of the Utility Model

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A glass edge grinding energy-saving system, which includes a power grid, an AFE unit and an edge grinding working unit. The power grid outputs three-phase alternating current. A main control board is installed on the AFE unit. The input end of the AFE unit is connected to the power grid. The edge grinding working unit includes a motor and a frequency converter. A main shaft and a grinding wheel are installed on the motor, and at least one group of edge grinding working units is provided. The motor is connected to the output end of the AFE unit through the frequency converter.

[0006] As a preferred solution, a filter reactor, a filter capacitor, a PFC reactor and a buffer resistor are sequentially connected between the power grid and the AFE unit.

[0007] As a preferred solution, a relay is connected to the input end of the AFE unit.

[0008] As a preferred solution, the motor is a permanent magnet motor.

[0009] As a preferred solution, the grinding wheel is a diamond grinding wheel.

[0010] As a preferred solution, the power of the motor is 2.2 kw to 7.5 kw, and the main shaft speed is 2800 - 6000 r / min.

[0011] Compared with the existing technology, the advantages of the utility model are as follows:

[0012] 1. According to the phenomenon that the motor has different output speeds in different working states during glass edge grinding, the utility model utilizes the rotational energy generated when the output speed of the motor decreases or the motor brakes and stops. The frequency converter feeds the power to the AFE unit, and then the AFE unit feeds back the energy to the power grid to achieve the effect of energy saving. Description of the Drawings

[0013] Figure 1 It is a wiring diagram of the utility model. DETAILED DESCRIPTION

[0014] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments or drawings are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0015] A glass edge grinding energy-saving system, such as Figure 1 As shown, it includes a power grid, an AFE unit and an edge grinding unit. The power grid outputs three-phase alternating current. A main control board is installed on the AFE unit. The input end of the AFE unit is connected to the power grid.

[0016] A filter reactor, a filter capacitor, a PFC reactor and a buffer resistor are connected in sequence between the power grid and the input end of the AFE unit. A relay is connected to the input end of the AFE unit. Before the AFE unit is started, the buffer resistor supplies power to the AFE unit. After the AFE unit is started, the relay is energized and supplies power to the AFE unit.

[0017] The edge grinding working unit includes a motor and a frequency converter. The motor is equipped with a spindle and a grinding wheel, and at least one group of edge grinding working units is provided. The motor is connected to the output end of the AFE unit through the frequency converter. The motor is driven by the frequency converter. The motor is a permanent magnet motor and the grinding wheel is a diamond grinding wheel. The motor power is 2.2kw to 7.5kw, and the spindle speed is 2800-6000r / min.

[0018] Multiple motors are installed in a spaced arrangement on the glass edge grinding production line. Since there are gaps between the glasses to be processed on the production line, the motor connected to the grinding wheel is controlled to run at high speed only when the glass is close to the grinding wheel, and full power is provided to the motor only at the beginning of edge grinding. When the grinding wheel is not in contact with the glass and is located in the gap between two pieces of glass, the motor's spindle speed will be reduced from the working speed to 500r / min. When the next piece of glass reaches the specified position from the spindle, the motor is controlled to increase the spindle speed to the working speed.

[0019] The inverter feeds power to the AFE unit using the rotational energy of the spindle and grinding wheel during deceleration and braking. Usually, multiple edge grinding units are set up on the glass edge grinding production line. When the motor slows down to recover energy, if the other motor is at working power, the feedback energy will be automatically transmitted to the other motor. If the AFE unit has surplus energy as a whole, the feedback electric energy will be fed back to the power grid.

[0020] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A glass edge grinding energy-saving system, characterized by: It includes a power grid, an AFE unit and an edge grinding work unit. The power grid outputs three-phase alternating current. The AFE unit is equipped with a main control board. The input end of the AFE unit is connected to the power grid. The edge grinding work unit includes a motor and a frequency converter. The motor is equipped with a spindle and a grinding wheel. At least one group of edge grinding work units is provided. The motor is connected to the output end of the AFE unit through the frequency converter.

2. The glass edge grinding energy-saving system according to claim 1, characterized in that: A filter reactor, a filter capacitor, a PFC reactor and a buffer resistor are connected in sequence between the power grid and the AFE unit.

3. The glass edge grinding energy-saving system according to claim 2, characterized in that: A relay is connected to the input terminal of the AFE unit.

4. The glass edge grinding energy-saving system according to claim 1, characterized in that: The motor is a permanent magnet motor.

5. The glass edge grinding energy-saving system according to claim 1, characterized in that: The grinding wheel is a diamond grinding wheel.

6. The glass edge grinding energy-saving system according to claim 1, characterized in that: The motor power is 2.2kw to 7.5kw, and the spindle speed is 2800-6000r / min.

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