Forging dies

Abstract

To provide a forging die that can suppress the occurrence of material loss. [Solution] The forging die 10 comprises an upper die 11 having an inner upper die 14 and an outer upper die 15, and a lower die 12 that forms a molding space together with the upper die 11, and the fitting surfaces 18 of the inner upper die 14 and the intermediate upper die 16, and the fitting surfaces 19 of the outer upper die 15 and the intermediate upper die 16 are designed to allow the entry of a release agent.

Description

Technical Field

[0001] The present invention relates to a forging die.

Background Art

[0002] Patent Document 1 describes a forging die including an inner split die for forming the upper surface of a product and an outer split die for forming the outer peripheral surface of the product.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when applying a release agent to the die, there was a problem that a lack of material occurred on the upper surface of the product in contact with the die.

Means for Solving the Problems

[0005] The forging die of one embodiment is configured to have a groove on the uppermost surface of the workpiece.

Effects of the Invention

[0006] According to the forging die of the present disclosure, the occurrence of a lack of material can be suppressed.

Brief Description of the Drawings

[0007] [Figure 1] It is a cross - sectional view showing an example of the forging die according to Embodiment 1.

Modes for Carrying Out the Invention

[0008] Embodiment 1 Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a cross-sectional view showing an example of a forging die according to Embodiment 1. In Figure 1, the forging die 10 comprises an upper die 11, a lower die 12, and a nozzle 13. The upper die 11 also has an inner upper die 14, an outer upper die 15, and an intermediate upper die 16.

[0009] The upper mold 11 and the lower mold 12 are molds that form a sealed molding space.

[0010] An intermediate upper mold 16 is provided between the inner upper mold 14 and the outer upper mold 15. The mating surfaces 18 of the inner upper mold 14 and the intermediate upper mold 16, and the mating surfaces 19 of the outer upper mold 15 and the intermediate upper mold 16 are designed to allow the release agent to enter.

[0011] The nozzle 13 sprays a release agent onto the upper mold 11 while the inner upper mold 14 and the outer upper mold 15 are separated and open. Since the main role of this release agent is to cool the mold, a large amount is applied to the impression area 17 of the upper mold 11. The release agent does not dry before the workpiece is formed, and the workpiece is formed with the impression area 17 of the upper mold 11 still wet with the release agent.

[0012] Thus, according to the forging die of Embodiment 1, by providing a groove on the uppermost surface of the workpiece, the release agent can be released, and the occurrence of material defects can be suppressed.

[0013] It should be noted that the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention. For example, the forging die may have a divided die in addition to the upper die and lower die. [Explanation of symbols]

[0014] 10 Forging dies 11 Upper mold 12 Lower mold 13 nozzles 14 Inner upper type 15 Upper outer mold 16 Intermediate Upper Type 17 Impression Section 18, 19 Mating surfaces

Claims

[Claim 1] An upper mold having an inner upper mold, an intermediate upper mold, and an outer upper mold, The system comprises a lower mold that forms a molding space together with the upper mold, A forging die in which the fitting surfaces of the inner upper die and the intermediate upper die, and the fitting surfaces of the outer upper die and the intermediate upper die, are each capable of allowing a release agent to enter.

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