JPH0615402A - Bushing forging header for battery pole column - Google Patents

Abstract

PURPOSE:To provide a bushing header for battery pole column with high productivity. CONSTITUTION:This forging header H is composed of a shearing device 1 for cutting a long work W to a prescribed size (work cutting means) and a forging die set 11 for forging the work Wa after cutting to a bushing upset body Wb in the unpenetrating condition at the top surface of the terminal part. Further, the forging die set 11 is constituted of a fixed die 12 having the first recessed part 16 of the shape corresponding to the terminal part of the bushing, one set of split dies 13 disposed so as to be slidable to the opening surface of a first recessed part 16 of the fixed die 12 and shiftable in the centrifugal and centripetal directions to the axis of the first recessed part 16 and a movable die 14 arranged so as to be capable of separation/attachment from/to the fixed die 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forged header for forming a bush for a battery pole.

[0002]

Bushings for battery poles are made entirely of lead or lead-antimony alloy, and are provided with a terminal portion on one side and a support portion with a plurality of annular ribs protruding from the outer peripheral surface on the other side.
Moreover, it has a pole hole on the axis. When using the bushing, the supporting part is vertically embedded and fixed in the resin case lid, the terminal part protrudes upward from the case lid, and the pole pillar connected to the electrode plate is further inserted into the pole hole from below. The connector on the power receiving side is connected to the terminal portion by being fitted and welded to the tip of the terminal portion.

Conventionally, the bushing has been mass-produced by casting, and in recent years, a manufacturing method by cold pressing has been proposed as disclosed in US Pat. No. 4,776,197. Although it is possible to obtain the bushing upset body in which the pole column holes are not penetrated on the top surface of the terminal portion by the cold press, the process is complicated and there is a problem in mass production with high productivity.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bushing forging header for a battery pole column having high productivity.

[0005]

A bushing forged header for a battery pole column according to the present invention comprises a terminal portion on one side and a support portion on the other side having a plurality of annular ribs protruding from the outer peripheral surface thereof, and a shaft. In order to forge a battery pole pole bushing having a pole pole hole on the wire, a work cutting means for cutting a long work into a predetermined dimension and a work after cutting is installed in a bushing installation state in which the pole pole hole is not penetrated on the top surface of the terminal portion. A forging header comprising a forging die set for forging into an insert body, wherein the forging die set comprises: (a) a fixed die having a first concave portion having a shape corresponding to the bushing terminal portion; and (b) a first fixed die. It is slidable with respect to the opening surface of the recess and movable in the centrifugal and centripetal directions with respect to the axis of the first recess, and is always biased in the centrifugal direction. The surface is tapered And a pair of split mold formed,
(C) It is arranged so as to be detachable from and attachable to the fixed mold, and is fixed so as to be slidable in the axial direction of the first concave portion with respect to the punch and the punch having a shape corresponding to the bushing pole hole that is coaxial with the first concave portion. The movable die has a pressing base that is constantly urged in the die direction and has a pressing base that is formed so that its surface facing the fixed die expands so as to fit with the split die end surface and the outer peripheral surface at the time of joining.

[0006]

In the bushing forging header, the long work is cut to a predetermined length by the work cutting means, and the cut work transferred from the work cutting means by a well-known transfer feeder or the like is cut by the forging die set to the top surface of the terminal portion. Is forged into a bushing upset that has not penetrated the pole hole.

In the forging die set, the cut work is put into the first concave portion of the fixed die from the second concave portion of the split die which is separated in the centrifugal direction, and the movable die is pressed onto the split die. The punch is press-fitted into the work by the pressing of the movable mold, and the pressing base is fitted to the split mold against the biasing force in the fixed mold direction, so that each split mold resists the biasing force in the centrifugal direction. Then, it is moved in the centripetal direction and joined and integrated, and the required forging is performed. When the movable mold is separated from the split mold and the fixed mold after the forging, the split mold is released from the pressing by the pressing base and separated from the original in the centrifugal direction,
It is possible to take out the forged product in another process. Although the forging die set can be operated at room temperature, it can be more smoothly operated at a temperature of 140 to 180 ° C.

The bushing upset which is not penetrated through the pole post on the top surface of the terminal portion, obtained as described above, is transferred to another step by a parts feeder or the like, and flashes due to the joining gap of the split mold. Are removed and the pole column holes are penetrated to complete the bushing.

[0009]

FIG. 1 is a cross-sectional view of a main part of a bushing forged header for a battery pole pillar according to an embodiment of the present invention at the time of preparation for compression.
FIG. 2 is a front view of a completed battery pole pillar bushing.

In FIG. 1, bushing forging header H
Is composed of a shear shearing device 1 as a work cutting means and a forging die set 11, and the long work W is first transferred to the shearing shearing device 1 intermittently. The long work W may be hollow.

The shear shearing device 1 is provided with a horizontally provided guide hole 2 and a cutting blade 3 provided so as to be movable on the opening of the guide hole 2 at a right angle to the axis of the guide hole 2. In the shear shearing device 1, the long work W is guided by the guide hole 2 and cut into a certain size by the cutting blade 3, and is transferred to an adjacent forging die set 11 by a transfer feeder (not shown).

The forging die set 11 comprises a fixed die 12, a set of split dies 13 and a movable die 14. Fixed type 12
Is installed on the stationary base 15 and has a first concave portion 16 having a shape corresponding to the bushing terminal portion, and a protruding hole 17 is formed at the bottom of the first concave portion 16 and a protruding bar 18 is formed in the protruding hole 17. It is movably inserted.

The split mold 13 has a first recess 16 of the fixed mold 12.
It is slidable with respect to the opening surface and is movable in the centrifugal and centripetal directions with respect to the axis of the first recess 16 and has a second recess 19 having a shape corresponding to the bushing support portion at the time of joining and has a tapered outer peripheral surface. Further, the operating shaft 20 is slidably fitted to the stationary base 15 along the moving direction of each split mold 13, and the inner end of each operating shaft 20 is connected to the corresponding split mold 13 and is stationary with the outer end of each operating shaft 20. A compression coil spring 21 is provided between the base 15 and the split mold 13 and each compression coil spring 21
Are always urged in the centrifugal direction by and are separated from each other when not operating.

Further, the movable die 14 is arranged so as to be separable from and in contact with the fixed die 12, and is coaxial with the first recessed portion 16 with respect to the punch 22 and the punch 22 having a shape corresponding to the bushing pole hole. The first recess 16 is slidable in the axial direction,
The pressing base 23 is provided such that the surface facing the fixed mold 12 is pierced so as to be able to fit with the end surface and the outer peripheral surface of the split mold 13 at the time of joining. In addition, the support shaft 24 is parallel to the punch 22 and the punch 2
It is slidably fitted to the two bases, the inner end of the support shaft 24 is connected to the pressing base 23, and a compression coil spring 25 is provided between the base of the punch 22 and the pressing base 23 along the support shaft 24. Is constantly urged toward the base of the punch 22 by the compression coil spring 25 in the fixed mold 12 direction.

In the forging die set 11, the cut work Wa transferred from the shear shearing device 1 is put into the first depression 16 of the fixed die 12 from the second depression 19 of the split die 13 separated in the centrifugal direction. The movable mold 14 is pressed onto the split mold 13. The punch 22 is pushed by the pressing of the movable mold 14.
Is pressed into the work Wa and the pressing table 23 is fitted into the split mold 13 against the biasing force of the compression coil spring 25, and accordingly, each split mold 13 resists the biasing force of the compression coil spring 21. The bushing is moved to the centripetal direction and is joined and integrated, the required forging is performed, and at the same time, the bushing upsetting body Wb in the state where the pole column hole is not penetrated on the top surface of the terminal portion is forged at once. When the movable die 14 is separated from the split die 13 and the fixed die 12 after the forging, the split die 13 is pressed by the pressing table 2
3 is released from the pressing force and the compression coil spring 21 is released.
Then, the bushing upsetting body Wb is taken out from the first concave portion 16 of the fixed mold 12 by the protruding bar 18 and is transferred to another process by a parts feeder (not shown). .

The bushing upsetting body Wb formed by the forged header H is subjected to removal of burrs caused by the bonding gap of the split mold 13 and penetration of pole pole holes in a separate process, and the bushing for battery pole poles is then processed. Finished product.

As shown in FIG. 2, the battery pole post bushing B has a truncated cone-shaped terminal portion 31 on one side and a support portion 32 on the other side, and has a pole column hole 33 on the axis. A flange portion 34 is provided in the middle portion, and a plurality of annular ribs 35 are projectingly provided on the outer peripheral surface of the support portion 32. In the present embodiment, the collar portion 34 belongs to the terminal portion 31 and is the first recess 1 of the fixed mold 12.
6 is used, but the second recess 19 of the split mold 13 may be used, if desired. It should be noted that the outer periphery of the collar portion 34 may be corrugated or gear-shaped.

[0018]

Since the bushing forging header for battery pole pillars according to the present invention is constructed as described above, it is possible to efficiently forge the bushing upset body in which the pole pillar holes are not penetrated on the top surface of the terminal portion and the battery is forged. Enables mass production of bushings for poles.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts of a bushing forged header for a battery pole pillar according to an embodiment of the present invention at the time of preparation for compression.

FIG. 2 is a front view of a finished product of a battery pole pillar bushing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shear shearing device 11 Forging die set 12 Fixed type 13 Split type 14 Movable type 16 First recess 16 19 Second recess 22 Punch 23 Pressing table 31 Terminal part 32 Supporting part 33 Pole pole hole 35 Ring rib B Battery pole pole bushing H Forged header W Long work Wa Work after cutting Wb Bole pole hole Not penetrated bushing Upset

Claims (1)

[Claims] 1. A battery pole pole bushing having a terminal portion on one side and a support portion having a plurality of annular ribs protruding from the outer peripheral surface on the other side, and having a pole hole on the axis for forging. ,
A forging header comprising a work cutting means for cutting a long work into a predetermined size and a forging die set for forging the work after cutting into a bushing upsetting body in a state where a pole column hole is not penetrated on the top surface of the terminal portion. The mold set is (a) a fixed mold having a first concave portion having a shape corresponding to the bushing terminal portion, and (b) slidable with the opening surface of the first concave portion of the fixed mold, and in the centrifugal and centripetal directions with respect to the axis of the first concave portion. A pair of split dies that are movably installed and constantly biased in the centrifugal direction, have a second concave portion having a shape corresponding to the bushing support portion at the time of joining, and have a tapered outer peripheral surface, and (c) fixing It is arranged to be detachable from the mold and is coaxial with the first recess. It is slidable in the axial direction of the first recess with respect to the punch and the punch having a shape corresponding to the bushing pole column hole, and is always in the fixed mold direction. Urged and solid Facing surface cell electrode pole bushing forging header comprising a movable mold having a pressing table that is formed in the split end surfaces and the outer peripheral surface fittable ahead spread at the time of joining the mold.