Temperature detection method of thermofusion welding machine
A technology of a hot-melt welding machine and a detection method, which is applied in the field of detection and measurement, can solve the problems of not reflecting the actual distribution of the temperature of the hot plate and the occurrence of deviation, so as to reduce the measurement workload, reduce errors and increase the workload. Effect
Inactive Publication Date: 2016-01-13
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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Problems solved by technology
The temperature on the hot plate is not only related to the geometric shape, the points selected by the general detection method cannot reflect the actual distribution of the actual hot plate temperature, and deviations occur
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[0022] The present invention will be described in further detail below, but the embodiments of the present invention are not limited thereto.
[0023] refer to figure 1 , the heat fusion welding machine has a hot plate and a heating device, the heating device heats the hot plate, the hot plate is plate-shaped, and the two opposite plate surfaces are respectively two heating surfaces 100 .
[0024] Such as figure 2 As shown, the temperature detection process of the hot-melt welding machine includes the following steps:
[0025] a. Start the welding machine, and wait until the temperature of the hot plate indicated by the welding machine reaches the nominal temperature T; when the temperature of the hot plate indicated by the welding machine reaches the nominal temperature T, maintain the state of the hot plate for more than or equal to 15 minutes.
[0026] b. The heating surface 100 on the first side of the hot plate is taken twice by thermal imaging to obtain two thermal im...
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The invention relates to a temperature detection method of a thermofusion welding machine. The detection method comprises the steps that a) after the temperature of an indicating hot plate of the welding machine reaches a nominal temperature T, a heating surface at one side of the hot plate is shot in a thermal imagery manner to obtain a thermal image; b) a point of the highest temperature in the thermal image is selected as the high temperature feature point, and according to the position of the high temperature feature point in the thermal image, temperature measurement is carried out at a corresponding position in the heating surface to obtain the temperature TH of the high temperature point; or / and a point of the lowest temperature in the thermal image is selected as the low temperature feature point, and according to the position of the low temperature feature point in the thermal image, temperature measurement is carried out at a corresponding position in the heating surface to obtain the temperature TL of the low temperature point; and c) the temperature uniform feature of the hot plate of the welding machine is obtained according to the nominal temperature T, the temperature TH of the high temperature point or / and the temperature TL of the low temperature point. The practical temperature distribution state of the heating surface can be reflected, and the workload of measurement is reduced.
Description
technical field [0001] The invention belongs to the field of measurement and detection, and in particular relates to a temperature detection method of a hot-melt welding machine. Background technique [0002] Polyethylene pipes used to transport gas are often hot-melt welded by hot-melt welding machines. The quality of welding is directly affected by the performance of the welding machine. It is very necessary to check the performance of the hot-melt welding machine. Since the hot-melt welding machine is equipped with a hot plate, the hot-plate heating is used for welding. In the inspection and testing items of the hot-melt welding machine, the temperature uniformity and deviation of the hot plate are important indicators that have a direct impact on the welding effect. The general detection method for the temperature uniformity of the hot plate is to use a contact thermometer to measure the uniformity and display deviation of the temperature, and to measure the points on bo...
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IPC IPC(8): G01J5/00G01K7/02
Inventor 李茂东李仕平吴文栋杨波李智郑佩根涂欣笪菁林金梅陈剑明罗健刚陈小锋翟伟
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST