Die-casting sprue and die-casting method for forming deep cylindrical casting

Abstract

The invention provides a die-casting sprue for forming a deep cylindrical casting and a die-casting method, and relates to the field of die-casting technology.Alloy liquid flows in the axial direction of the cylindrical casting through an annular multi-strand end face binding pouring system to achieve sequential filling of the alloy liquid, and the size of an opening of the strand of sprue of the pouring system is adjusted according to the alloy amount needed by a filling area; in addition, the annular multi-strand end face binding feeding pouring system can give consideration to far-end / local complex shapes by leading a plurality of auxiliary pouring gates on the annular main transverse pouring gate along the butt joint face of the sliding block.

Description

Technical Field

[0001] The invention relates to the field of die casting technology, in particular to a die casting gate and a die casting method for forming deep cylindrical castings. Background Art

[0002] The ideal pouring system for the die-casting process of cylindrical castings is the center feed pouring system; however, the use of the center feed pouring system has high requirements on the inner diameter of the casting, the size of the casting and the complexity of the shape, and once the center feed pouring system is arranged, there is almost no room for adjusting the pouring system, and it is also difficult to remove the gate; there are more and more motor housings and all-in-one motor housing products, and the inner side of the cylinder wall generally has a large processing allowance, high requirements on the internal quality, and the shape of the casting is complex, so the rationality and adjustability of the die-casting process are higher. If the method is unreasonable and the adjustability is poor, not only the internal quality of the cylinder wall cannot be guaranteed, but also the internal quality of the complex shape cannot be taken into account; there are also few adjustable die-casting process methods suitable for the molding of deep cylindrical castings. Summary of the invention

[0003] The purpose of the present invention is to provide a die-casting gate and die-casting method for forming deep cylindrical castings. By adopting a pouring method of designing an annular multi-strand splicing feeding from the end face of the cylindrical casting, the internal quality of the cylindrical casting can be guaranteed.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows: A die-casting gate for forming deep cylindrical castings is characterized in that an annular main cross runner is provided at the port of the cylindrical part of the deep cylindrical casting, a plurality of annularly distributed tie-in gates are provided between the annular main cross runner and the port, and an auxiliary runner is provided on the side of the annular main cross runner.

[0005] Improvement on the above technical solution: a notch is provided on the annular main runner, and an overflow block of the deep cylindrical casting is arranged at the notch.

[0006] The die casting method for forming deep cylindrical castings comprises the following steps: 1) First, the alloy liquid flows through the die casting gate along the axial direction of the cylindrical casting to achieve sequential filling of the alloy liquid; 2) Adjust the size of the gate opening of the gating system according to the amount of alloy required in the filling area, so that each alloy flow in the annular multi-strand end-face bonding feeding gating system flows evenly and fills the shape; 3) The die casting gate takes into account the remote / local complex shapes by introducing several auxiliary runners along the slider joint surface on the annular main cross runner.

[0007] Beneficial effects: The die-casting gate and die-casting method for forming deep cylindrical castings described in the present invention can ensure the internal quality of the cylindrical casting wall, and at the same time, for the internal quality of the distal / local complex shape parts, the adjustment space is increased, and the development risk of the deep cylindrical casting is reduced. It can be suitable for most deep cylindrical, ribbed cylindrical, and ribbed high round cap castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the present invention.

[0009] In the figure: 1 deep cylindrical casting, 2 annular main cross runner, 3 tie-in gate, 4 cylindrical part, 5 auxiliary runner, 6 overflow block. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0011] A die-casting gate for forming deep cylindrical castings, wherein an annular main runner 2 is provided at the port of the cylindrical part 4 of the deep cylindrical casting 1, a plurality of annularly distributed tie-in gates 3 are provided between the annular main runner 2 and the port, and an auxiliary runner 5 is provided on the side of the annular main runner 2.

[0012] Improvement on the above technical solution: a notch is provided on the annular main runner 2, and the overflow block 6 of the deep cylindrical casting 1 is arranged at the notch.

[0013] The die casting method for forming deep cylindrical castings comprises the following steps: 1) First, the alloy liquid flows through the die casting gate along the axial direction of the cylindrical casting to achieve sequential filling of the alloy liquid; 2) Adjust the size of the gate opening of the gating system according to the amount of alloy required in the filling area, so that each alloy flow in the annular multi-strand end-face bonding feeding gating system flows evenly and fills the shape; 3) The die casting gate takes into account the remote / local complex shapes by introducing several auxiliary runners along the slider joint surface on the annular main cross runner.

[0014] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Die casting gate for deep cylindrical casting, characterized by: An annular main runner is provided at the port of the cylindrical part of the deep cylindrical casting, a plurality of annularly distributed tie-in gates are provided between the annular main runner and the port, and an auxiliary runner is provided on the side of the annular main runner.

2. The die casting gate for deep cylindrical casting according to claim 1, characterized in that: A notch is arranged on the annular main runner, and an overflow block of the deep cylindrical casting is arranged at the notch.

3. A die casting method for forming deep cylindrical castings, the steps of which are: 1) First, the alloy liquid flows through the die casting gate along the axial direction of the cylindrical casting to achieve sequential filling of the alloy liquid; 2) Adjust the size of the gate opening of the gating system according to the amount of alloy required in the filling area, so that each alloy flow in the annular multi-strand end-face bonding feeding gating system flows evenly and fills the shape; 3) The die casting gate takes into account the remote / local complex shapes by introducing several auxiliary runners along the slider joint surface on the annular main cross runner.

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