JPH058064B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a drip impregnation treatment apparatus for dripping varnish onto electrical equipment coils and the like. [Technical Background of the Invention and Problems Therewith] Drop impregnation treatment apparatuses have conventionally been used to impregnate electrical equipment coils and the like with varnish in a short time, thereby improving productivity and reducing costs. The reason for this is that the varnish impregnation treatment using the drip impregnation treatment apparatus allows accurate and high-quality varnish impregnation treatment by avoiding the shaft and commutator portion of the object to be treated, which should not be varnished. Therefore, the object to be treated is preheated before the varnish impregnation treatment. In order to shorten the temperature rise time, some induction heating systems are used to preheat the object to be processed, but in most cases, a hot air oven is used to preheat the object. If the preheating temperature of the object to be processed is too low, non-curing will occur during curing performed in a later step. On the other hand, if the preheating temperature is too high, the varnish will gel during the dropping at the winding portion of the object to be treated, resulting in poor impregnation. In severe cases, the varnish will foam and become a defective product. Therefore, it is necessary to accurately measure the surface temperature of the object to be processed after preheating. However, most conventional impregnation treatment equipment uses a hot air oven for preheating, so the surface temperature of the object to be treated after preheating is measured using the furnace temperature measured as part of furnace temperature control. It is determined by the internal temperature. This is conventionally done on the basis that the temperature of the object to be processed does not rise above the temperature inside the furnace. Furthermore, even when the preheating method is an induction heating system, the surface temperature of the object to be processed is indirectly measured based on the temperature inside the furnace. As a result, the temperature of the object to be processed after preheating cannot be adjusted accurately and in a short period of time, resulting in a problem of significantly lowering the yield. [Object of the Invention] An object of the present invention is to provide a drip impregnation treatment apparatus that can measure the temperature of each object to be treated accurately and in a short time to improve the yield of varnish impregnation treatment. It is. [Summary of the Invention] The present invention provides a temperature measurement section equipped with a contact temperature sensor that measures the surface temperature by contacting each object to be processed, thereby accurately and accurately measuring the temperature of each object to be processed. Moreover, it is a drip impregnation treatment apparatus that can perform measurement in a short time and perform varnish impregnation treatment with a high yield. [Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a schematic configuration of an embodiment of the present invention. This dripping impregnation treatment device 1
0 has a preheating section 1, a temperature measuring section 2, and a varnish impregnating section 3, which are successively connected to the preheating section 1. The rotor coil, etc., which is the object to be processed 4, is transported from the preheating section 1 to the temperature measurement section 2, and the varnish impregnated section 3 by a conveying means (not shown).
It is designed to be supplied sequentially and intermittently. The preheating section 1 is provided with an induction preheating system (not shown) formed of a high frequency coil or the like. The temperature measuring section 2 is provided with a contact temperature sensor 7 connected to an in/out mechanism 6 including an air cylinder 5 and the like. The contact type temperature sensor 7 is configured to move in and out of the surface of the object to be processed 4 in and out of contact with the surface of the object to be processed 4 by driving the in/out mechanism 6 . Then,
The temperature is measured while in contact with the surface of the object 4 to be processed. The loading/unloading mechanism 6 is driven in synchronization with the conveyance means. The contact temperature sensor 7 includes, for example, an aluminum-chromel (CA) sensor, a chromel-constantan (CRC) sensor, and an iron-constantan (IC) sensor. Further, in the varnish impregnating section 3, the object to be treated 4 is supplied while rotating, and is impregnated with varnish by a drip impregnator (not shown). According to the drip impregnation treatment apparatus 10 configured as described above, the object to be treated 4 is preheated in an extremely short time by the induction heating system in the preheating section 1. Next, the preheated object 4 to be processed is supplied to the temperature measuring section 2 by the conveying means without rotating. Next, the in/out mechanism 6 is driven, and as shown in FIG. 2, the contact temperature sensor 7 pushed out by the air cylinder 5 comes into contact with the surface of the object to be processed 4 to measure the surface temperature. When this measured temperature is within the permissible value, the object to be treated 4 is carried out to the varnish impregnating section 3. When the measured temperature is outside the allowable value, the preheating conditions of the preheating section 1 are corrected. The object to be processed 4 supplied to the varnish impregnating section 3 is impregnated with varnish in a predetermined region while avoiding the shaft and commutator section. In this manner, the drip impregnation treatment apparatus 10 performs varnish impregnation after accurately measuring the surface temperature of each object 4 with the contact temperature sensor 7 in the temperature measurement unit 2, so that high-quality varnish impregnation treatment can be achieved. It can be performed. In addition, the measurement of the surface temperature of the object to be processed 4 is as follows:
Because it is a contact method, it is extremely accurate and can be done in a short time. In addition, transportation of the object 4 to be processed, preheating,
Surface temperature measurement is performed automatically and an induction heating system is used for preheating, reducing work time and significantly improving productivity. As a result, an improvement in yield can be achieved. [Effects of the Invention] As explained above, according to the drip impregnation treatment apparatus according to the present invention, it is possible to improve the yield of varnish impregnation treatment by measuring the temperature of each object to be treated accurately and in a short time. It is possible.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a schematic configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the operation of the embodiment. DESCRIPTION OF SYMBOLS 1... Preheating part, 2... Temperature measuring part, 3... Varnish impregnation part, 4... Treated object, 5... Air cylinder, 6... In/out mechanism, 7... Contact type temperature sensor,
10...dropping impregnation treatment device.

Claims (1)

[Claims] 1. A temperature measuring section and a varnish impregnating section which are successively connected to the preheating section, a conveying means for intermittently conveying the object to be processed from the preheating section to the temperature measuring section and the varnish impregnating section, and a conveying means synchronized with the conveying means. A drip impregnation treatment apparatus comprising: a contact type temperature sensor movably provided in the temperature measuring section so as to freely contact the surface of the object to be treated.