阅读说明：本技术 一种电机机壳加热装置及其加热方法 (Motor shell heating device and heating method thereof ) 是由 刘晶 高宜刚 陈加荣 于 2021-09-03 设计创作，主要内容包括：本发明公开了一种电机机壳加热装置及其加热方法,它包括用于放置机壳的加热台面、用于加热机壳的加热机构、用于与机壳直接接触并测量机壳温度的温度传感器和用于驱动温度传感器朝向机壳表面一侧运动或朝向远离机壳表面一侧运动的驱动装置；加热机构包括固定于加热台面上、通过感应电流加热机壳内部的高频感应线圈和与其连接的高频加热控制器。通过开放式的加热台面配合高频感应线圈的结构,在实现自动化上下料的同时,利用高频感应加热的原理提升了加热效率,缩短了加热时间。在气缸推进的作用下,通过热电偶式温度传感器实现了直接接触测量电机壳体加热温度的目的,并可将温度实时反馈回加热系统,在设定的温度范围内自动调节。(The invention discloses a motor shell heating device and a heating method thereof, and the device comprises a heating table top for placing a shell, a heating mechanism for heating the shell, a temperature sensor for directly contacting with the shell and measuring the temperature of the shell, and a driving device for driving the temperature sensor to move towards one side of the surface of the shell or move towards one side far away from the surface of the shell; the heating mechanism comprises a high-frequency induction coil which is fixed on the heating table surface and heats the interior of the shell through induction current and a high-frequency heating controller connected with the high-frequency induction coil. Through the structure of open heating mesa cooperation high frequency induction coil, when realizing automatic unloading, utilize high frequency induction heating's principle to promote heating efficiency, shortened heating time. Under the effect of cylinder propulsion, realized the purpose of direct contact measurement motor casing heating temperature through thermocouple formula temperature sensor to can feed back heating system with the temperature in real time, automatically regulated within the temperature range of setting for.)

1. A motor casing heating device which characterized in that: the device comprises a heating table top (1) for placing a machine shell, a heating mechanism for heating the machine shell, a temperature sensor (2) for directly contacting with the machine shell and measuring the temperature of the machine shell, and a driving device for driving the temperature sensor (2) to move towards one side of the surface of the machine shell or move towards one side far away from the surface of the machine shell; the heating mechanism comprises a high-frequency induction coil (4) which is fixed on the heating table board (1) and heats the interior of the shell through induction current and a high-frequency heating controller (5) connected with the high-frequency induction coil.

2. The motor-casing heating apparatus of claim 1, wherein: and a cooling device for preventing the high-frequency induction coil (4) from being overheated is also fixed on the high-frequency induction coil.

3. The motor-casing heating apparatus of claim 2, wherein: the high-frequency induction coil (4) comprises a plurality of layers of wire rings which are arranged at intervals in the vertical direction, the cooling device is a cooling water pipe (6) which is wound and fixed between two adjacent layers of guide rings, and the lower end of the high-frequency induction coil (4) and the lower end of the cooling water pipe (6) penetrate through the heating table top (1) and are connected with the high-frequency heating controller (5).

4. The motor-casing heating apparatus of claim 1, wherein: the driving device is a driving cylinder (3), and a piston rod of the driving cylinder (3) is fixed with the temperature sensor (2).

5. The motor-casing heating apparatus of claim 1, wherein: the heating table further comprises a supporting frame (7), wherein at least two stations are arranged on the supporting frame (7), and each station comprises one heating table top (1).

6. A heating method of a motor shell is characterized in that: snatch the casing and place on heating mesa (1), drive arrangement drive temperature sensor (2) move towards casing surface one side, and temperature sensor (2) and casing surface contact measure casing surface temperature, and high frequency heating controller (5) start high frequency induction coil (4) and heat the casing, and the casing reaches after setting for heating temperature, snatchs the casing to next station.

7. The heating method of a motor casing according to claim 6, wherein: and if the shell reaches the set heating temperature and the next station is not in the idle state, the high-frequency induction coil (4) enters a constant-temperature working state, the shell is kept at the set heating temperature until the next station is in the idle state, and the shell is grabbed to the next station.

8. The method of heating a motor casing of claim 7, wherein: the method for the high-frequency induction coil (4) to enter the constant-temperature working state comprises the following steps: according to the set heating temperature of the shell, the heat quantity required by the shell to be kept at the set heating temperature in unit time is calculated, the current of the high-frequency induction coil (4) is controlled by the high-frequency heating controller (5), and the heat quantity generated by the high-frequency induction coil (4) in unit time is equal to the heat quantity required by the shell to be kept at the set heating temperature in unit time.

9. The heating method of a motor casing according to claim 6, wherein: the high-frequency heating controller (5) detects the temperature of the high-frequency induction coil (4) in real time, and if the temperature of the high-frequency induction coil (4) exceeds the upper limit of the set temperature, the cooling device is started to cool the high-frequency induction coil (4).

10. The method of heating a motor casing of claim 9, wherein: the method for cooling the high-frequency induction coil (4) by starting the cooling device comprises the following steps: and the high-frequency heating controller (5) supplies water to the cooling device, monitors the water flow entering the cooling device in real time, and stops supplying power to the high-frequency induction coil (4) when the water flow entering the cooling device is lower than a set lower flow limit.

Technical Field

The invention relates to the technical field of vehicle processing equipment, in particular to a motor shell heating device and a heating method thereof.

Background

The heating mode of the current motor shell is heating furnace heating, namely, a batch of six shells are placed into the furnace through a closed electric heating furnace, heating equipment is started after the temperature is set, the motor shell is heated through heating of an electric heating pipe, meanwhile, a heat source is uniformly distributed in the furnace cavity through a circulating fan in the furnace, and a temperature sensor measures the temperature of hot air in the furnace and indirectly reflects the heating temperature of the shell. The heating time is long (60 minutes is needed) and the temperature measurement is an indirect measurement mode, a certain deviation exists between the measured temperature and the actual temperature of the shell, and the heating furnace is of a closed structure, so that automatic feeding and discharging cannot be realized.

Disclosure of Invention

The invention aims to solve the defects of the background technology and provide a motor shell heating device and a heating method thereof, wherein the motor shell heating device can directly measure the temperature of a shell, avoid measurement deviation and realize automatic feeding and discharging.

In order to achieve the purpose, the invention designs a heating device of a motor shell, which is characterized in that: the device comprises a heating table top for placing a machine shell, a heating mechanism for heating the machine shell, a temperature sensor for directly contacting with the machine shell and measuring the temperature of the machine shell, and a driving device for driving the temperature sensor to move towards one side of the surface of the machine shell or move towards one side far away from the surface of the machine shell; the heating mechanism comprises a high-frequency induction coil and a high-frequency heating controller, wherein the high-frequency induction coil is fixed on the heating table board and heats the inside of the shell through induction current, and the high-frequency heating controller is connected with the high-frequency induction coil.

Further, a cooling device for preventing the high-frequency induction coil from being overheated is fixed on the high-frequency induction coil.

Furthermore, the high-frequency induction coil comprises a plurality of layers of wire rings which are arranged at intervals in the vertical direction, the cooling device is a cooling water pipe which is wound and fixed between two adjacent layers of guide rings, and the lower end of the high-frequency induction coil and the lower end of the cooling water pipe both penetrate through the heating table top and are connected with the high-frequency heating controller.

Furthermore, the driving device is a driving cylinder, and a piston rod of the driving cylinder is fixed with the temperature sensor.

Furthermore, the motor shell heating device further comprises a supporting frame, wherein at least two stations are arranged on the supporting frame, and each station comprises one heating table board.

A heating method of a motor shell is characterized in that: snatch the casing and place on heating the mesa, drive arrangement drive temperature sensor moves towards casing surface one side, and temperature sensor and casing surface contact measure casing surface temperature, and high-frequency heating controller starts high-frequency induction coil and heats the casing, and the casing reaches and sets for heating temperature after, snatchs the casing to next station.

Further, if the next station is not in an idle state after the casing reaches the set heating temperature, the high-frequency induction coil enters a constant-temperature working state, the casing is kept at the set heating temperature until the next station is in the idle state, and the casing is grabbed to the next station.

Further, the method for the high-frequency induction coil to enter the constant-temperature working state comprises the following steps: and calculating the heat quantity required by the shell to be kept at the set heating temperature in unit time according to the set heating temperature of the shell, and controlling the current of the high-frequency induction coil by the high-frequency heating controller to ensure that the heat quantity generated by the high-frequency induction coil in unit time is equal to the heat quantity required by the shell to be kept at the set heating temperature in unit time.

Further, the high-frequency heating controller detects the temperature of the high-frequency induction coil in real time, and if the temperature of the high-frequency induction coil exceeds a set upper temperature limit, the cooling device is started to cool the high-frequency induction coil.

Still further, the method for starting the cooling device to cool the high-frequency induction coil comprises the following steps: and the high-frequency heating controller supplies water to the cooling device, monitors the water flow entering the cooling device in real time, and stops supplying power to the high-frequency induction coil when the water flow entering the cooling device is lower than a set flow lower limit.

The invention has the beneficial effects that: through the structure of open heating mesa cooperation high frequency induction coil, when realizing automatic unloading, utilize high frequency induction heating's principle to promote heating efficiency, shortened heating time. Under the effect that the cylinder impels, realized the purpose of direct contact measurement motor casing heating temperature through thermocouple formula temperature sensor to can feed back heating system with the temperature in real time, at the within range automatically regulated of setting for, avoid motor casing temperature measurement's deviation, realized the automation of motor casing heating simultaneously.

Drawings

FIG. 1 is a perspective view of a motor casing heating apparatus according to the present invention;

FIG. 2 is a front view of the motor casing heating apparatus of the present invention;

FIG. 3 is a top view of the motor casing heating apparatus of the present invention;

FIG. 4 is a left side view of the motor casing heating apparatus of the present invention;

FIG. 5 is a flow chart of a heating process of the motor casing according to the present invention;

the device comprises a heating table top 1, a temperature sensor 2, a driving cylinder 3, a high-frequency induction coil 4, a high-frequency heating controller 5, a cooling water pipe 6 and a supporting frame 7.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The motor casing heating device as shown in fig. 1-4 comprises a heating table top 1 for placing the casing; a high-frequency induction coil 4 fixed on the heating table board 1 and heating the interior of the shell by induction current and a high-frequency heating controller 5 connected with the high-frequency induction coil; the temperature sensor 2 is used for being in direct contact with the shell and measuring the temperature of the shell, the driving cylinder 3 is used for driving the temperature sensor 2 to move towards the surface side of the shell or move towards the side far away from the surface side of the shell, and a piston rod of the driving cylinder 3 is fixed with the temperature sensor 2. The high-frequency induction coil 4 comprises a plurality of layers of wire rings which are arranged at intervals along the vertical direction, a cooling water pipe 6 is fixed between two adjacent layers of guide rings, and the lower end of the high-frequency induction coil 4 and the lower end of the cooling water pipe 6 both penetrate through the heating table board 1 and are connected with a high-frequency heating controller 5. In order to protect the high-frequency induction coil 4 from overhigh temperature in the heating process and prolong the service life of the high-frequency induction coil, a cooling circulating water pipe is arranged in the high-frequency induction coil 4, and the high-frequency induction coil has a water flow detection alarm function and can be powered off for protection in case of water shortage. The temperature sensor 2 is withdrawn by the driving cylinder 3 when not in use, no other frame is arranged on the workbench except for the high-frequency induction coil 4, the robot is clamped and carried without being shielded by obstacles, and automatic feeding and discharging operation is realized.

As shown in fig. 5, the motor casing heating device designed by the present invention is specifically applied as follows: industrial robot gets transport motor casing from last station clamp and puts on heating mesa 1, drives actuating cylinder 3 and promotes temperature sensor 2 and casing direct contact, starts high frequency induction coil 4 heating motor casing, and the automatic shutdown heating after reaching the settlement temperature, robot transports the casing to next station and continues processing, if next station does not have idle, this heating device will maintain the constant temperature under program control, is got by robot clamp and is grabbed away after idle appearing in next station, carries out process on next step.

As shown in fig. 1, a reserved empty station is arranged on a platform of a station of a heating device, and a set of heating coils can be repeatedly installed on the reserved station when capacity is expanded later, so that the reconstruction cost is reduced, and the capacity is improved.

The device has two control modes of manual and automatic, and the manual mode is started/stopped and the power adjusting operation is completed on the panel of the device. The automatic mode is that the upper PLC is controlled by a communication party remote program, and the upper PLC sends out a communication instruction to complete the starting/stopping, current regulation, power regulation, temperature and other parameters. The device is internally provided with a temperature control algorithm, and can complete closed-loop control, such as: after the target temperature is set on the device and the shell reaches the target temperature, the device automatically enters constant-temperature closed-loop operation, at the moment, 4-20mA current at the corresponding temperature can be input into the heating mechanism, and the shell is in a constant-temperature state through the heating mechanism.

When the control circuit of the device fails and cannot automatically operate, a manual operation mode can be used, and the device can continuously operate under the condition of local failure, so that normal production is ensured.

This device passes through RS485/RS232C interface protocol, communicates with upper PLC, can accomplish following function: uploading the equipment state; acquiring the working electric quantity data and the equipment state of the equipment; starting/canceling a remote control function; setting operation control quantity (including starting, stopping, pausing, canceling pausing and operation modes); setting an operation target value (current value or power value or temperature value); acquiring the state of a transformer end and uploading the state to a PLC; resetting the fault code; and uploading the current fault code to the PLC.

The device has the following alarm and protection functions: outputting an overcurrent alarm; alarming when the power element is over-temperature; alarming for abnormality of the fan; output overcurrent protection; resonance overvoltage protection; resonance over-frequency protection; input overvoltage protection; output short circuit protection; power element over-temperature protection; open-phase protection; the sensor is protected from water cut-off/low water flow; protecting the transformer from over-temperature; and (5) over-temperature protection of the capacitor.

When the device is in an alarm or protection state, the device communicates with the upper PLC in real time and is displayed on a human-computer interface, so that an operator can conveniently inquire the occurrence of the alarm or protection state, and the alarm or protection state can be uploaded to an upper MES system through the Ethernet, and is convenient to trace back later.

If the device stops outputting due to accidental factors (such as power grid flicker, short-time water cut-off, lightning and the like), the upper PLC sends out an instruction in an automatic operation mode, the device starts a self-checking program, scans each alarm signal output point, and automatically restarts immediately if no subsequent fault exists, and stably outputs a set value before an event occurs to operate. If the device stops running, subsequent fault alarm still exists, or the self-checking result of the device does not accord with the condition of continuously starting running, and the device cannot automatically restart output.

The automatic restart function can significantly improve the ability of the device to operate continuously. If the restart is unsuccessful, the restart is repeated twice, the device does not send out the fault signal during the restart, and if the restart is unsuccessful, the fault signal is sent out.

The effect of the original heating device is compared with that of the heating device of the invention:

the heating device designed by the invention has the advantages that the energy consumption in unit time is reduced by 16%, the productivity is improved by 233%, and the temperature control precision is improved by 70%.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.