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CN-121972600-A - Forging die and method for one-time hot forging forming of multiple balancing weights

CN121972600ACN 121972600 ACN121972600 ACN 121972600ACN-121972600-A

Abstract

The application relates to the technical field of dies and provides a forging die and a forging method for one-time hot forging forming of multiple balancing weights, wherein the forging die comprises an upper die and a lower die, a plurality of half cavities are formed on opposite surfaces of the upper die and the lower die, when the upper die and the lower die are in forging and closing die, complete forming cavities are formed, the forming cavities provide blank forging and closing die forming, at least three forming cavities are in a group, at least three forming cavities of each group are unfolded and arranged in a fixed circle center, a plurality of groups of forming cavities are arranged, an ejection cavity is arranged below the forming cavities by the lower die, an ejection opening is arranged between the ejection cavity and the forming cavities, the ejection cavity is communicated with the forming cavities through the ejection opening, an ejection mechanism is arranged in the ejection cavity, and the ejection mechanism fills the ejection opening. The application has the effect of synchronously ejecting a plurality of balance weights.

Inventors

  • ZHANG JUNJUN

Assignees

  • 上海长特锻造有限公司

Dates

Publication Date
20260505
Application Date
20260302

Claims (10)

  1. 1. A forging die for one-time hot forging forming of multiple balancing weights comprises an upper die (2) and a lower die (1), wherein a plurality of half cavities are formed on opposite surfaces of the upper die (2) and the lower die (1), when the upper die (2) and the lower die (1) are in forging and die closing, a complete forming cavity (3) is formed, the forming cavities (3) provide blank forging and die closing forming, and the forging die is characterized in that at least three forming cavities (3) are in a group, at least three forming cavities (3) of each group are arranged in a stretching mode with fixed circle centers, the forming cavities (3) are provided with a plurality of groups, an ejection cavity is arranged below the forming cavities (3) by the lower die (1), an ejection outlet is formed between the ejection cavity and the forming cavities (3) and communicated with the forming cavities (3) through the ejection outlet, an ejection mechanism (4) is arranged in the ejection cavity, the ejection mechanism (4) is connected with a driving mechanism (5), the driving mechanism (5) is located in the ejection cavity and extends outwards to the lower die (1), and all blanks in the ejection cavities (3) are ejected synchronously by the driving mechanism (4).
  2. 2. A forging die for one-time hot forging forming of multiple balancing weights according to claim 1, wherein the ejection cavity is provided with one and is communicated with all the forming cavities (3) uniformly.
  3. 3. The forging die for one-time hot forging of multiple balancing weights according to claim 2, wherein the ejection mechanism (4) comprises an ejection part (41) and a pushing part (42), the ejection part (41) is arc-shaped and is provided with an ejection column (411) for filling an ejection outlet, one side of the bottom surface of the ejection part (41) is provided with a wedge-shaped slot (412), the other side of the bottom surface of the ejection part is in butt joint with the bottom cavity wall surface of the ejection cavity, the pushing part (42) is arc-shaped and is provided with a wedge-shaped insert (421) close to one side of the wedge-shaped slot (412), the wedge-shaped insert (421) is inserted into the wedge-shaped slot (412), and one side, far away from the wedge-shaped insert (421), of the pushing part (42) is connected with the driving mechanism (5).
  4. 4. The forging die for one-time hot forging of multiple balancing weights according to claim 3, wherein the wedge-shaped slot (412) is arc-shaped, the inner top surface of the wedge-shaped slot (412) is an inclined wedge-shaped surface, the wedge-shaped insert (421) is arc-shaped, the wedge-shaped insert (421) is inserted into the wedge-shaped slot (412), the top surface is abutted with the inner top surface of the wedge-shaped slot (412), the initial position of the wedge-shaped insert (421) is a notch of the wedge-shaped slot (412), and the wedge-shaped insert (421) continuously stretches into the wedge-shaped slot (412) when driven by the driving mechanism (5).
  5. 5. The forging die for one-time hot forging of multiple balancing weights according to claim 4 is characterized in that an arc-shaped limiting groove (413) matched with the outer arc of the wedge-shaped limiting groove is formed in the wedge-shaped surface of the inner top surface of the wedge-shaped slot (412), a limiting part (422) is arranged at the top of the wedge-shaped insert (421), the limiting part (422) is composed of a limiting column and a limiting ball, and the cross-section shape of a notch of the arc-shaped limiting groove (413) is matched with the limiting column and the limiting ball.
  6. 6. The forging die for one-time hot forging forming of multiple balancing weights according to claim 5, wherein the single ejection mechanism (4) corresponds to a group of cavities (3), and the number of the ejection parts (41), the pushing parts (42) and the wedge-shaped inserts (421) is identical to the number of the group of cavities (3) and corresponds to one.
  7. 7. The forging die for one-time hot forging forming of multiple balancing weights according to any one of claims 4 to 6, wherein the driving mechanism (5) comprises a driving part (51), driving toothed rings (52) and meshing parts (53), a plurality of driving toothed rings (52) are arranged, each driving toothed ring (52) corresponds to one ejection mechanism (4), a pushing part (42) corresponding to a forming cavity (3) is connected with the inner wall of one driving toothed ring (52), the meshing parts (53) are connected with the inner cavity wall of the ejection cavity and meshed with the driving toothed rings (52), and the driving part (51) is arranged outside the lower die (1) and connected with the meshing parts (53).
  8. 8. A forging die for one-time hot forging of multiple weights according to claim 7, wherein when the forming cavities (3) are provided in plural groups, plural component cavities (3) are provided in the same straight line direction.
  9. 9. A multi-weight one-time hot forging die as set forth in claim 8, wherein the engaging portion (53) simultaneously engages all of the driving toothed rings (52).
  10. 10. A method for one-time hot forging forming of a plurality of balance weights, which is applied to the forging die of any one of claims 1 to 9, and comprises the following steps: Heating the blank, and placing the heated blank on a half cavity of a lower die (1) of the die; Forging and pressing, namely forging and pressing the upper die (2) and the lower die (1) to be matched with each other, so that blanks are synchronously pressed into a plurality of component cavities (3); taking materials, pressing to form a semi-finished product, and ejecting the semi-finished product out of a forming cavity (3) through an ejection mechanism (4) and a driving mechanism (5); cutting off redundant flash; and (3) cold treatment, namely forming a complete finished product of the balance weight after the cold treatment.

Description

Forging die and method for one-time hot forging forming of multiple balancing weights Technical Field The application relates to the technical field of dies, in particular to a forging die and a forging method for one-time hot forging forming of multiple balancing weights. Background The balance weight, also called a tire balance weight, is a balance weight part of a vehicle mounted on a wheel, and has the function of keeping dynamic balance of the wheel under high-speed rotation, the mass of each part of any object can be different, under static and low-speed rotation, the uneven mass can influence the rotation stability of the object, the higher the rotating speed is, the larger the vibration is, and the balance weight has the function of reducing the mass difference of the wheel as much as possible so as to achieve a relatively balanced state. The common balancing piece needs to be forged and formed by adopting the die, but when the common die is used for forging and pressing the balancing piece, a single die can only forge and press a single balancing piece, the forming efficiency is low, and when the multi-station die is adopted, a plurality of balancing pieces can be mutually stuck and stuck by simultaneously forging and pressing a single blank, so that when the material is taken out, the material is stressed unevenly, the material is broken off or damaged easily, and the complete yield is affected. Disclosure of Invention In order to solve the above problems, the present application provides a forging mold and a method for one-time hot forging of multiple weights. The application provides a forging die with multiple balance weights for one-time hot forging forming, which adopts the following technical scheme: A forging die for one-time hot forging forming of multiple balancing weights comprises an upper die and a lower die, wherein a plurality of half cavities are formed on opposite surfaces of the upper die and the lower die, when the upper die and the lower die are in forging and die closing, complete forming cavities are formed, blank forging and die closing forming is provided for the forming cavities, at least three forming cavities are formed into a group, at least three forming cavities of each group are unfolded and arranged at a fixed circle center, a plurality of groups of forming cavities are arranged, an ejection cavity is arranged below the forming cavities by the lower die, an ejection opening is formed between the ejection cavity and the forming cavities and is communicated with the forming cavities through the ejection opening, an ejection mechanism is arranged in the ejection cavity and fills the ejection opening, the ejection mechanism is connected with a driving mechanism, and the driving mechanism is arranged in the ejection cavity and extends outwards and drives the ejection mechanism to synchronously eject all blanks in the forming cavities. Through adopting above-mentioned technical scheme, when needs carry out forging and pressing shaping balancing piece to the blank, place the blank in the half intracavity of lower mould, forging and pressing compound die through last mould and lower mould for the blank is forged and pressed in the shaping chamber of a plurality of groups, when last mould and lower mould separation, need take out the blank in a plurality of shaping chamber in step, drive ejection mechanism through actuating mechanism, make ejection mechanism lie in the part synchronization of ejection exit upwards promote the blank, thereby the blank in all shaping chamber is all by synchronous ejection, in order to realize taking out the effect of all blanks in step, prevent that the atress is uneven to cause the blank damage, improve the yield. Optionally, one ejection cavity is formed and is uniformly communicated with all the molding cavities. By adopting the technical scheme, all ejection mechanisms can be positioned in the same ejection cavity, and all ejection mechanisms are uniformly and synchronously driven by the driving mechanism, so that the stable synchronous material taking effect is realized. The ejection mechanism comprises an ejection part and a pushing part, wherein the ejection part is arc-shaped and is provided with an ejection column for filling an ejection outlet on the top surface, one side of the bottom surface of the ejection part is provided with a wedge-shaped slot, the other side of the bottom surface of the ejection part is in butt joint with the bottom cavity wall surface of the ejection cavity, the pushing part is arc-shaped and is provided with a wedge-shaped insert close to one side of the wedge-shaped slot, the wedge-shaped insert is inserted into the wedge-shaped slot, and one side of the pushing part away from the wedge-shaped insert is connected with the driving mechanism. By adopting the technical scheme, the driving mechanism drives the pushing part to move towards the ejection part, so that the wedge-shaped insert block is inserted into