Whistle die head and casting die for investment casting of turbocharger

Abstract

The utility model provides a whistle die head and casting die for investment casting turbocharger, the die head comprises a cup mouth, a cross gate and two vertical gates, the vertical gates are vertically connected with the outer edges of the two sides of the cross gate, a plurality of bumps are arranged on the outer sides of the vertical gates, the bumps on the same side are arranged at equal intervals, the bumps on the left side and the right side are symmetrically arranged, and the bumps on the left side and the right side are symmetrically arranged. A mold core is vertically and fixedly arranged in the center of the cross gate; the casting mold comprises an upper mold and a lower mold, the upper end of the lower mold and the lower end of the upper mold are provided with a split cup opening runner, a transverse runner, a vertical runner and a sliding groove, the cup opening runner is matched with a cup opening in shape, the transverse runner is matched with a transverse runner in shape, the vertical runner is matched with a vertical runner in shape, and a mold core is located in the sliding groove. On the basis of a traditional sprue, width reduction and fleshing are achieved, the use amount of medium-temperature wax and metal raw materials is reduced, the cracking risk during dewaxing of the mold shell is reduced, operation is easy and convenient, the yield of castings is increased, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to a whistle die head and a casting mold for investment casting a turbocharger. Background Art

[0002] At present, the whistle part group tree die head in the market is usually a straight sprue type die head. When the wax mold group tree is made, the whistles are welded on the vertical sprue at equal intervals in turn. Because the whistle has a double internal gate design, the straight sprue needs to be designed wider, and a lot of wax material is consumed during wax injection. More metal materials are consumed by the die head during casting, reducing the material yield of the product and increasing the production cost.

[0003] Therefore, there is an urgent need for a die head structure that can solve the above problems and improve the material yield of the casting. Summary of the Invention

[0004] The purpose of the utility model is to provide a whistle die head and a casting mold for investment casting a turbocharger.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A whistle die head and a casting mold for investment casting a turbocharger, characterized in that

[0007] The die head includes a cup mouth, a cross sprue and two vertical sprues. The vertical sprues are vertically connected to the outer edges on both sides of the cross sprue. A plurality of convex blocks are arranged on the outer sides of the vertical sprues. The convex blocks on the same side are arranged at equal intervals, and the convex blocks on the left and right sides are symmetrically arranged. A core is vertically and fixedly arranged in the center of the cross sprue;

[0008] The casting mold includes an upper mold and a lower mold. Semi-separable cup mouth runners, cross runners, vertical runners and chutes are arranged at the upper end of the lower mold and the lower end of the upper mold. The cup mouth runner matches the shape of the cup mouth, the cross runner matches the shape of the cross sprue, the vertical runner matches the shape of the vertical sprue, and the core is located in the chute;

[0009] Further, a side runner is arranged on one side of the vertical runner.

[0010] Based on the traditional straight sprue, the utility model reduces the width and removes the excess material, reducing the usage amount of medium-temperature wax and metal raw materials, reducing the cracking risk during dewaxing of the mold shell, being easy to operate, improving the material yield of the casting, and saving costs. Brief Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the stepped die head of the utility model;

[0012] Figure 2 It is a schematic structural diagram of the upper mold of the utility model;

[0013] Figure 3 Schematic diagram of the lower die structure of the present utility model;

[0014] Figure 4 Schematic diagram of the slider core-pulling structure of the present utility model.

[0015] Figure 5 Schematic diagram of the mold-closing state structure of the present utility model.

[0016] Figure 6 Schematic diagram of the tree-assembling structure of the present utility model.

[0017] Reference numerals:

[0018] 1 Die head, 2 Cup mouth, 3 Horizontal runner, 4 Vertical runner, 5 Protrusions,

[0019] 6 Core, 7 Upper die, 8 Lower die, 9 Cup mouth runner, 10 Horizontal runner,

[0020] 11 Vertical runner, 12 Slide groove, 13 Side runner, 14 Slider, 15 Whistle. Specific embodiments

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] The present utility model discloses a whistle die head and a casting mold for investment casting of a turbocharger. As Figure 1 shown, the die head 1 includes a cup mouth 2, a horizontal runner 3 and two vertical runners 4. The vertical runners 4 are perpendicularly connected to the outer edges on both sides of the horizontal runner 3. A plurality of protrusions 5 are provided on the outer sides of the vertical runners 4. The protrusions 5 on the same side are equally spaced, and the protrusions 5 on the left and right sides are symmetrically arranged. A core 6 is vertically fixed in the center of the horizontal runner 3.

[0023] Four protrusions 5 are provided on the outer sides of each of the two vertical runners 4. Correspondingly, a groove is formed between two adjacent protrusions 5. In the whistle die head 1 of the present utility model, see Figure 6 , the welding part of the tree-assembling for the inner gate of the whistle 15 in the vertical runner 4 (sprue) is thickened to form the protrusions 5, and the non-tree-assembling welding part in the vertical runner 4 (sprue) is thinned and removed to form the groove, reducing the usage amount of medium-temperature wax and reducing the cracking risk during dewaxing of the mold shell.

[0024] As Figure 2 and Figure 3As shown in the figure, the casting mold includes an upper mold 7 and a lower mold 8. At the upper end of the lower mold 8 and the lower end of the upper mold 7, there are semi-separable cup-shaped runners 9, cross runners 10, vertical runners 11 and chutes 12. The cup-shaped runner 9 is shaped to fit the cup mouth 2, the cross runner 10 is shaped to fit the cross gate 3, the vertical runner 11 is shaped to fit the vertical gate 4. The core 6 is located in the chute 12, and a side runner 13 is provided on one side of the vertical runner 11.

[0025] As Figure 4 and Figure 5 shown in the figure, the structure of the casting mold is that the die head 1 is split, half of it is on the upper mold 7 and half of it is on the lower mold 8. A chute 12 for core pulling is arranged in the middle. The slider 14 is inserted into the chute 12 and cooperates with the core 6 to eject for demolding.

[0026] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A whistle die head and a casting mold for investment casting a turbocharger, characterized in that the die head includes a cup mouth, a cross gate and two vertical gates. The vertical gates are vertically connected to the outer edges on both sides of the cross gate. A plurality of bumps are provided on the outer sides of the vertical gates. The bumps on the same side are arranged at equal intervals, and the bumps on the left and right sides are symmetrically arranged. A core is vertically and fixedly provided in the center of the cross gate; the casting mold includes an upper mold and a lower mold. Semi-segmented cup mouth runners, cross runners, vertical runners and chutes are provided at the upper end of the lower mold and the lower end of the upper mold. The cup mouth runner is matched with the shape of the cup mouth, the cross runner is matched with the shape of the cross gate, the vertical runner is matched with the shape of the vertical gate, and the core is located in the chute.

2. The whistle die head and casting mold for investment casting a turbocharger according to claim 1, characterized in that, A side runner is provided on one side of the vertical runner.

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