Pressurized cylinder cross-mixing liquid filling die and its liquid filling method

Abstract

The present invention discloses a pressurized cylinder cross-mixing liquid filling die and a liquid filling method thereof, including a die body, a first pressurized cylinder and a second pressurized cylinder; the die body is provided with a first liquid filling channel and a second liquid filling channel; the first pressurized cylinder is communicated with the first liquid filling channel, and the second pressurized cylinder is communicated with the second liquid filling channel. By using two pressurized cylinders for liquid filling in this application, the internal pressure of the die pipe fittings can be made consistent, thereby ensuring the consistency of part forming and the pressure relief consistency of the subsequent punching process, enabling the normal forming of complex double-cavity parts, reducing the scrap rate, and thus improving the yield.

Description

Technical Field

[0001] The present invention relates to a boosting cylinder cross - mixed liquid - filling die and a liquid - filling method thereof. Background Art

[0002] When a complex - section part is in the low - pressure forming process, due to the slight differences between the nitrogen cylinders and the boosting cylinders, there may be a large error in the contact points of the upper and lower die surfaces, resulting in off - loading of the press slide block, affecting the internal pressure of low - pressure forming, affecting the subsequent forming quality, and causing scrap; after punching, due to the differences in the punching stage and the different pressure - releasing speeds of multiple boosting cylinders, the slide block is off - loaded after punching, causing damage to the cavity with a slower pressure - releasing speed, thus resulting in scrap.

[0003] Therefore, in the face of the problem that the products of the existing dies are prone to scrap, it is an urgent technical problem to develop a boosting cylinder cross - mixed liquid - filling die that can reduce the scrap rate of die forming. Summary of the Invention

[0004] The purpose of the present invention is to provide a boosting cylinder cross - mixed liquid - filling die and a liquid - filling method thereof to solve the problem of high scrap rate of existing die products.

[0005] To solve the above - mentioned technical problems, the present invention provides a boosting cylinder cross - mixed liquid - filling die, including a die body, a first boosting cylinder, and a second boosting cylinder; the die body is provided with a first liquid - filling channel and a second liquid - filling channel; the first boosting cylinder is communicated with the first liquid - filling channel, and the second boosting cylinder is communicated with the second liquid - filling channel.

[0006] Further, during liquid filling and low - pressure forming, the parameter settings of the first boosting cylinder and the second boosting cylinder are kept consistent. The first boosting cylinder is the main forming boosting cylinder, and the second boosting cylinder is the auxiliary forming boosting cylinder for accelerating liquid filling.

[0007] Further, during forming, the forming curve of the first boosting cylinder is determined according to the CAE analysis data of different parts, and the second boosting cylinder performs pressure holding for 1 - 5 seconds at 20%, 35%, 60%, and 85% of the total forming pressure of the first boosting cylinder respectively.

[0008] Further, during sizing, the motion curve of the second boosting cylinder is synchronized with the motion curve of the first boosting cylinder.

[0009] In addition, the present invention also provides a liquid - filling method for the above - mentioned boosting cylinder cross - mixed liquid - filling die, including:

[0010] During liquid filling and low - pressure forming, the parameter settings of the first boosting cylinder and the second boosting cylinder are kept consistent. The first boosting cylinder is the main forming boosting cylinder, and the second boosting cylinder is the auxiliary forming boosting cylinder for accelerating liquid filling;

[0011] During forming, the forming curve of the first boosting cylinder is determined according to the CAE analysis data of different parts, and the second boosting cylinder performs pressure holding for 1 - 5 seconds respectively at 20%, 35%, 60%, and 85% of the total forming pressure of the first boosting cylinder.

[0012] During sizing, the motion curve of the second boosting cylinder is synchronized with that of the first boosting cylinder.

[0013] The beneficial effects of the present invention are as follows: By using two boosting cylinders for liquid filling, the internal pressure of the die pipe fittings can be made consistent, thus ensuring the consistency of part forming and the pressure relief consistency of subsequent punching processes, enabling the normal forming of complex double - cavity parts, reducing the scrap rate, and thus improving the yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The same reference numerals are used to represent the same or similar parts in these drawings. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0016] Wherein: 1. Die body; 11. First liquid filling channel; 12. Second liquid filling channel; 2. First boosting cylinder; 3. Second boosting cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] As Figure 1 shown in the boosting cylinder cross - mixing liquid filling die, the die includes a die body 1, a first boosting cylinder 2, and a second boosting cylinder 3; the die body 1 is provided with a first liquid filling channel 11 and a second liquid filling channel 12; the first boosting cylinder 2 is communicated with the first liquid filling channel 11, and the second boosting cylinder 3 is communicated with the second liquid filling channel 12.

[0018] According to an embodiment of the present application, during liquid filling and low - pressure forming, the parameter settings of the first boosting cylinder 2 and the second boosting cylinder 3 are kept consistent. The first boosting cylinder 2 is the main forming boosting cylinder, and the second boosting cylinder 3 is an auxiliary forming boosting cylinder for accelerating liquid filling.

[0019] According to an embodiment of the present application, during forming, the forming curve of the first boosting cylinder 2 is determined according to the CAE analysis data of different parts, and the second boosting cylinder 3 performs pressure holding for 1 - 5 seconds respectively at 20%, 35%, 60%, and 85% of the total forming pressure of the first boosting cylinder 2.

[0020] According to an embodiment of the present application, during sizing, the motion curve of the second boosting cylinder 3 is synchronized with that of the first boosting cylinder 2.

[0021] In addition, the present invention also discloses a liquid filling method for the above-mentioned boosting cylinder cross-mixed liquid filling mold, and the method includes:

[0022] During liquid filling and low-pressure forming, the parameters of the first boosting cylinder 2 and the second boosting cylinder 3 are set to be consistent. The first boosting cylinder 2 is the main forming boosting cylinder, and the second boosting cylinder 3 is the auxiliary forming boosting cylinder for accelerating liquid filling;

[0023] During forming, the forming curve of the first boosting cylinder 2 is determined according to the CAE analysis data of different parts, and the second boosting cylinder 3 performs pressure holding for 1-5 seconds at 20%, 35%, 60%, and 85% of the total forming pressure of the first boosting cylinder 2;

[0024] During sizing, the movement curve of the second boosting cylinder 3 is synchronized with the movement curve of the first boosting cylinder 2.

[0025] Since the working cavities of the first boosting cylinder 2 and the second boosting cylinder 3 in this application are the same, the internal pressure of the pipe fittings inside the mold is the same, thereby ensuring the consistency of part forming and the pressure relief consistency of the subsequent punching process, enabling the normal forming of complex double-cavity parts; the present invention can also support different parts with a forming pressure difference within 30 Mpa (the maximum pressure of the press is 5000 T) for double-cavity combined production.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A liquid filling method for a liquid filling die of a supercharging cylinder cross-mixing type, characterized in that, The pressure intensifying cylinder cross-mixing liquid filling die includes a die body, a first pressure intensifying cylinder and a second pressure intensifying cylinder; the die body is provided with a first liquid filling channel and a second liquid filling channel; the first pressure intensifying cylinder is communicated with the first liquid filling channel, and the second pressure intensifying cylinder is communicated with the second liquid filling channel; The method includes: During liquid filling and low-pressure forming, the parameter settings of the first pressure intensifying cylinder and the second pressure intensifying cylinder are kept consistent. The first pressure intensifying cylinder is the main forming pressure intensifying cylinder, and the second pressure intensifying cylinder is the auxiliary forming pressure intensifying cylinder for accelerating liquid supplement; During forming, the forming curve of the first pressure intensifying cylinder is determined according to the CAE analysis data of different parts, and the second pressure intensifying cylinder keeps pressure for 1-5 seconds at 20%, 35%, 60% and 85% of the total forming pressure of the first pressure intensifying cylinder respectively; During sizing, the motion curve of the second pressure intensifying cylinder is synchronized with the motion curve of the first pressure intensifying cylinder.

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