JPS6058569B2 - How to stack transformer cores - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for stacking transformer cores, and more particularly to a method for stacking transformer cores with improved work efficiency.

[Traditional branch technique]

Conventionally, this type of stacking work involves stacking a desired number of cores 3 and 4 on the flange of the lower tank 1 of the transformer via spacers 2 so as to surround the coil 5, as shown in FIGS. 1 and 2. The joints were smoothed to a predetermined height and stacked alternately.

[Problem that the invention seeks to solve]

The method of stacking transformer cores as described above consists of stacking a predetermined number of cores 3 and 4, alternating their joints by a predetermined dimension, and stacking the cut end surfaces of adjacent cores 3 and 4 together. There were problems in that stacking them in contact required a great deal of time and effort, and increased production costs.

This invention was made in order to solve these problems, and aims to significantly shorten the time required for stacking transformer cores and to provide an economically superior method for stacking transformer cores. purpose.

[Means for solving problems]

The method for stacking transformer cores according to the present invention is to stack straight cores of a predetermined number with their cut end faces alternately stacked, and stack them on respective predetermined locations on the flanges of the lower tank of the transformer. A corner block in which a predetermined number of corner cores are stacked is placed in each space created by the process of arranging the corner cores at different positions and the cut end surfaces of the straight cores being alternately rubbed against each other. and a step of successively inserting the elongated end into contact with the cut end surface of the straight section conoa.

[Effect]

In this invention, corner blocks in which a predetermined number of corner cores are stacked are sequentially inserted into the spaces of the straight block created at the cut end surfaces of the straight cores.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

3 to 6 show a transformer core obtained according to the present invention, and the same or corresponding parts as in FIGS. 1 and 2 are given the same reference numerals, and the explanation thereof will be omitted. The transformer core has a square-shaped overall shape, and is divided into eight parts by a straight part core 6 at the straight part and a corner core 7 at the corner part. The corner core 7 has a rectangular shape, and this corner core 7
A notch 7c is formed in the corner on the coil 5 side. The transformer core configured as described above is stacked on the flange 2 of the transformer lower tank 1 according to the procedure described below. First, straight part blocks, each consisting of a predetermined number of straight cores 6 stacked with their cut end faces alternately shifted, are arranged at predetermined positions on the flange 2, respectively. Next, in the spaces 8 formed alternately on the left and right in the stacking direction of the straight block,
Corner blocks in which a predetermined number of corner cores 7 are stacked are sequentially inserted. When inserting the corner block into each space 8, the notch 7c is directed toward the coil 5 side, and the short end 7b and long end 7a of the corner core 7 are placed in contact with the cut end surface of the straight core 6, respectively. Insert them so that they touch each other. For example, when inserting each corner block sequentially from the lower space 8 to the upper space 8, it is necessary to turn the corner block upside down each time the corner block is inserted into the space 8, and to insert the corner block into the space 8. This is done by reversing the . As a result, at the joint between the straight core 6 and the corner core 7, there is a short end 7b and a long end 7b.
A and A are arranged alternately in the stacking direction, and the balance of the joints is maintained. In addition, although the rectangular one corner core 7 was explained as a rectangular shape in the said Example, a square corner core may be sufficient.

〔Effect of the invention〕

As described above, according to the present invention, since the transformer core is divided into the straight core and the corner core, the dimensions of the straight core and the corner core are reduced, making handling easier. The straight core can be easily placed on the flange surface of the tank.

In addition, since the length of one side of the corner core is short, it is possible to easily insert the corner block into the space.Furthermore, the work of inserting the corner blocks into the space can be performed separately. This makes it possible to perform separate work, which was previously impossible due to collaborative work, and together with the ease of inserting the corner blocks into the space, the stacking time is greatly shortened.Furthermore, the flange When arranging the linear portion cores on the surface, the linear portion cores are arranged in units of a plurality of stacked blocks, which has the effect that scratches and distortions on the core surface that would lead to deterioration of core characteristics are less likely to occur.

[Brief explanation of drawings]

FIGS. 1 and 2 are a plan view and a front view, respectively, showing the configuration of a core assembled using a conventional stacking method;
3 and 4 are a plan view and a front view, respectively, showing the structure of a transformer core assembled by applying the stacking method in an embodiment of the present invention, and FIGS. 5 and 6 are a transformer core. 2 is a perspective view showing a stacked state of an insert core and a joint core, which constitute the main parts of the. In the figure, 1 is the lower tank of the transformer, 6 is the straight core,
7 is a corner core, 7a is a long end, 7b is a short end, 7c is a notch, and 8 is a space.

Claims (1)

[Claims] 1 A transformer core having a square-shaped overall shape is divided into a straight core at the straight part and a corner core at the corner,
a step of arranging a straight section block in which a predetermined number of straight section cores are stacked with their cut end faces alternately shifted at respective predetermined positions on a flange of a lower tank of the transformer; A corner block in which a predetermined number of the corner cores are stacked is placed in each space created by the alternating cut end faces, and the short ends and long ends of the corner cores are connected to the straight part cores. A method for stacking transformer cores, comprising the step of sequentially inserting the cores in contact with the cut end surfaces.