JPS638102Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a claw bending device for bending the claws C of the core cover B of a transformer A as shown in FIG.

Conventionally, the claws C of this type of core cover were bent manually. Therefore, when the number of transformers increases, there is a problem in that a great deal of labor and time is required. Moreover, since each claw C is bent individually, the work efficiency is poor, and the more workers there are, the more uneven the bending becomes.

In addition, in the past, before bending the claw C, it was necessary to hit the core D with a hammer or the like to correct the unevenness of the core D, which made the work a two-step process, which was cumbersome and resulted in a reduction in work efficiency. It was hot too.

The present invention eliminates the various drawbacks mentioned above, and will be described in detail below with reference to the drawings from FIG. 2 onwards.

In FIGS. 2 to 5, 1 is a pedestal on which the transformer is placed, 2 is an elevating body that can be moved up and down, and 3 is a driving body such as an air cylinder that moves the elevating body up and down.

The pedestal 1 has a groove 4 on its upper surface in which the transformer A is placed, and is attached to a lower member 7 of a frame 6 with tightening bolts 5 at two lower portions. Reference numeral 8 denotes a guide protrusion that projects upward from the upper member 7, and is used to facilitate mounting of the pedestal 1 when the pedestal 1 is replaced. The elevating body 2 includes a base plate 9, a spring storage body 11 attached to it with a plurality of bolts 10 (only one is shown in the drawing, and the others are omitted).
There is a connecting body 13 attached to it with multiple bolts 12 (only one is shown), and a plurality of bolts 1 below it.
The bending block 15 attached at 4 (only one is shown) and the core striking block 1 installed inside it
6 and a spring 17. and board 9
is attached to a receiving plate 19 attached to the elevating rod 18 of the driving body 3 with a plurality of bolts 20, so that it moves up and down as the elevating rod 18 moves up and down.

In FIGS. 2 and 3, 21 is a guide protrusion projecting upward from the base plate 9, and 22 is an insertion hole opened in the receiving plate 19, into which the guide protrusion 21 is inserted. 23 is a bolt for attaching the drive body 3 to the upper member 24 of the frame 6, and 25 is a rotation stopper/guide pin inserted from the upper member 24 into the receiving plate 19. A bending part 26 for bending the claw C of the transformer core cover is formed on the elevating body 2, and as shown in FIG. The inner surface 28 of each protrusion 27 is tapered to widen from the top to the bottom, so that when the claw C of the transformer core cover is pressed from above, the claw C can be reliably bent without expanding outward. It is arranged to enter inside the section 26.

Further, the upper inner corner portion 29 of each protrusion 27 is curved into an arc shape, so that when the bent portion 26 is lowered, the claw C of the transformer core cover is bent inward.

The elevating body 2 is also provided with core striking portions 30, which are formed on both sides of the bottom surface of the striking block 16, as clearly shown in FIG. This block 1
6 has its lower part protruded downward from the bottom surface 31 of the bending block 15, and furthermore, as shown in FIGS. It is pushed down, thereby causing the core striking part 30 to protrude below the bottom surface of the bent part 26.

To use the illustrated apparatus, proceed as follows.

First, operate the drive body 3 to raise the elevating body 2, place the transformer A in the groove 4 of the pedestal 1 with the claw C of the transformer core cover facing upward, and in this state, move the elevating body 2 to the transformer A. drop rapidly onto the top.
In this way, the core D is struck by the core striking part 30 of the elevating body 2, the unevenness is corrected, and the end surface E of the core D is aligned. When the elevating body 2 further descends, the claw C is bent inward by the bending portion 26 as shown in FIGS. 5 and 6.

Note that the elevating body 2 automatically ascends and leaves the transformer A after bending the claw C. At this time, it is sufficient to remove the transformer A from the pedestal 1 and place the transformer A whose claws are to be bent next.

In addition, in Figure 3, reference numeral 33 denotes a shaft-shaped support body protruding upward from the receiving base 1, which presses one widthwise side surface F of the transformer core cover B against which the transformer A is placed when it is placed on the receiving base 1, thereby preventing the side surface F from spreading outward when the claws C are bent.
In addition, in the same figure, reference numeral 34 denotes a pressing body such as an air cylinder provided on the side of the receiving base 1, which presses the other side G of the transformer core cover B from the side to prevent the side G from spreading outward when the claws C are bent.

Further, the pedestal 1 and the elevating body 2 may be replaced with ones of other shapes and dimensions depending on the structure of the transformer A.

As described above, the present invention allows the elevating body 2 to move up and down automatically, and is provided with the bending part 26 and the core striking part 30, so that the unevenness of the core D of the transformer A can be corrected and the transformer core can be adjusted. Claw C of cover B
The folding and bending can be carried out automatically and by one step of lifting and lowering, and therefore the working efficiency is significantly improved, the number of working personnel is reduced accordingly, and the cost can be significantly reduced.

Furthermore, if the inner surface 28 of the bent portion 26 of the present invention is tapered so as to widen from the top to the bottom as described in claim 4 of the utility model registration,
Just by lowering the elevating body 2 onto the nail, the nail naturally moves inside.

Furthermore, if the four upper inner corners 29 of the bent portion 26 are bent into an arc shape as described in claim 5 of the utility model registration, the claws C can be moved naturally by advancing the descent of the elevating body 2. Since it is bent inward, the claw C can be reliably bent as desired. Moreover, since the claws C are bent by mechanical force, there is less variation in bending compared to when the claws are bent manually.

Furthermore, since the pedestal 1 and the elevating body 2 can be freely exchanged with those of other shapes and dimensions, even if the structure of the transformer A changes, it is only necessary to replace the pedestal 1 and the elevating body 2. Therefore, the scope of use is widened. It is wider and also has various cradle 1.
It is also economical because it is sufficient to prepare the elevating body 2 in advance. Furthermore, since the end surface E of the core D is struck by the core striking portion 30 to align the same surface E, the electrical characteristics of the transformer are also improved.

[Brief explanation of the drawing]

Fig. 1 shows an example of the transformer, A is a perspective view of the state before the claws are bent, B is a perspective view of the state with the claws bent, and Fig. 2 is a partial longitudinal section of the device according to the present invention. 3 is a side view of the main parts of the device, FIG. 4 is a bottom perspective view of the elevating body in the device, FIG. 5 is a front view showing the device in use, and FIG. 6 is a side view of the device in the same state. FIG. 1 is a cradle, 2 is an elevating body, 3 is a drive body, 26 is a bending part, 28 is an inner surface of the bending part, 30 is a core striking part, A is a transformer, B is a transformer core cover,
C is the claw of the transformer core cover, D is the core, F, G
is the side of the transformer core cover.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An elevating body equipped with a pedestal on which a transformer is placed, a bending part for bending the nails of the transformer core cover, and a core striking part for aligning the cores, and an elevating body that moves the elevating body up and down. A transformer core cover claw bending device consisting of a drive body that bends the transformer core cover. (2) A claw bending device for a transformer core cover as set forth in claim 1 of the utility model registration claim, in which the pedestal and elevating body can be freely replaced with other pedestals and elevating bodies. (3) The transformer according to claim 1 of the utility model registration, wherein the cradle is provided with a support that supports one side of the transformer core cover, and the opposite side is provided with a pressing member that presses the other side of the transformer core cover. Core cover claw bending device. (4) The transformer core cover according to claim 1 of the utility model registration claim, in which the inner surface of the bent portion is tapered to widen from the top to the bottom to prevent the claws of the transformer core cover from escaping to the outside. Claw bending device. (5) A claw bending device for a transformer core cover according to claim 1 of the utility model registration claim, wherein the upper inner corner of the bent portion is bent into an arc shape so that the claws of the transformer core cover are bent inward. .