Plastic heat insulation cylinder mold

Abstract

The utility model relates to the technical field of engine casting, in particular to a plastic heat insulation cylinder mould, which comprises an upper mould, a lower mould, a middle mould and a casting mould piece, the casting mould piece is frustum-shaped, the middle mould is detachably arranged at one end of the lower mould, a through groove is arranged in the middle mould, the casting mould piece is arranged in the through groove, a material cavity and a mould cavity are arranged in the casting mould piece, and the mould cavity is communicated with the upper mould. The material cavity is communicated with the cavity, the diameter of the material cavity is larger than that of the cavity, one end of the lower die is provided with a die rod, the die rod extends into the cavity, one end of the upper die is provided with a material plug, the material plug extends into the material cavity and abuts against the die rod, and the material plug and the die rod form a cavity in the casting die. According to the utility model, the heat-insulating cylinder is formed in the casting mold, the casting mold is formed by splicing the two mold cores, and the mold core I and the mold core II are separated through the mold opening groove, so that the integrity of the heat-insulating cylinder can be protected to a great extent, and the heat-insulating cylinder is prevented from being damaged by the casting mold in the demolding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine casting, particularly relates to a plastic heat insulation cylinder mould. BACKGROUND

[0002] The heat insulation cylinder is an important part of an aero-engine, a large amount of heat is generated when the aero-engine operates, the heat insulation cylinder can prevent heat transfer, avoid overheating of the external components of the engine, ensure the normal work of surrounding equipment and structure, and reduce thermal stress and thermal deformation. SUMMARY

[0003] In view of the technical problems in the background art, the utility model aims at providing a plastic heat insulation cylinder mould, which can make the demoulding process of the heat insulation cylinder and the mould core stable and efficient, and will not affect the cylinder wall of the heat insulation cylinder.

[0004] To achieve the above-mentioned purpose, the utility model provides a technical scheme:

[0005] A plastic heat insulation cylinder mould, the mould comprises an upper die, a lower die, a middle die and a casting mould piece, the casting mould piece is in the shape of a truncated cone, the middle die is detachably arranged at one end of the lower die, a through groove is arranged in the middle die, the casting mould piece is arranged in the through groove, a material cavity and a cavity are arranged in the casting mould piece, the material cavity and the cavity are communicated, the diameter of the material cavity is larger than that of the cavity, a mould rod is arranged at one end of the lower die, the mould rod extends into the cavity, a material plug is arranged at one end of the upper die, the material plug extends into the material cavity and abuts against the mould rod, and the material plug and the mould rod form a cavity in the casting mould piece.

[0006] Preferably, one end of the mould rod is provided with a boss, and the material plug abuts against the boss.

[0007] Preferably, the casting mould piece comprises a mould core I and a mould core II, the mould core I and the mould core II are detachably connected, and a demoulding groove is arranged at the connecting position of the mould core I and the mould core II.

[0008] Preferably, a positioning pin is arranged at one end of the lower die, a positioning hole is arranged at one end of the middle die, and the positioning pin extends into the positioning hole.

[0009] Preferably, the mould further comprises a hot melting piece, the hot melting piece is arranged in the material cavity, and the upper die is supported on the hot melting piece.

[0010] Preferably, the outer side of the middle die is in the shape of an arc and is provided with a groove for moving the middle die.

[0011] The utility model has the following advantages and beneficial effects:

[0012] The utility model discloses, heat -insulating cylinder is in the cast module piece forming, and the cast module piece is spliced by two mould cores, and after forming, the middle mould is removed, and then the mould core I and mould core II are separated through the draw -down groove, can the integrality of heat -insulating cylinder is protected greatly, prevents the cast module piece from damaging heat -insulating cylinder in the process of stripping, and the whole mould adopts the splicing mode connection, not only can facilitate stripping, and when the subsequent mould breaks down, facilitate the removal of the damaged position replacement maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a kind of sectional view of plastic heat-insulating cylinder mould.

[0014] Figure 2 The utility model provides the explosion diagram of a kind of plastic heat-insulating cylinder mould.

[0015] Figure 3 The utility model provides the explosion diagram of the cast module of a kind of plastic heat-insulating cylinder mould.

[0016] Figure 4 The utility model provides the schematic diagram of hot melt piece position of a kind of plastic heat-insulating cylinder mould.

[0017] Reference signs: 2-lower mould, 21-positioning pin, 22-mould rod, 23-boss, 3-middle mould, 31-positioning hole, 32-through slot, 33-groove, 4-cast module piece, 41-mould core I, 42-mould core II, 43-draw-down groove, A-material cavity, B-cavity, C-press cavity, 5-upper mould, 51-plug, 6-hot melt piece. DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.

[0019] Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0020] EMBODIMENT

[0021] As Figures 1-4As shown in the figure, a plastic heat insulation cylinder mold, the mold comprises an upper mold 5, a lower mold 2, a middle mold 3 and a casting mold 4, the casting mold 4 is frustoconical, the casting mold 4 comprises a mold core I 41 and a mold core II 42, the mold core I 41 and the mold core II 42 are detachably connected, a mold opening groove 43 is arranged at the connecting position of the mold core I 41 and the mold core II 42, a through groove 32 is arranged in the middle mold 3, the casting mold 4 is arranged in the through groove 32, the mold core I 41 and the mold core II 42 are spliced and closed in the through groove 32, a material cavity A and a cavity B are arranged in the casting mold 4, the material cavity A and the cavity B are communicated, the diameter of the material cavity A is greater than the diameter of the cavity B, the heat insulation cylinder is formed in the casting mold 4, after forming, the middle mold 3 is removed, and then the mold core I 41 and the mold core II 42 are separated through the mold opening groove 43, so that the integrity of the heat insulation cylinder can be greatly protected, and the heat insulation cylinder is prevented from being damaged in the demolding process.

[0022] As shown in the figure, Figures 1-4 The middle mold 3 is detachably arranged at one end of the lower mold 2, one end of the lower mold 2 is provided with a positioning pin 21, one end of the middle mold 3 is provided with a positioning hole 31, the positioning pin 21 extends into the positioning hole 31, and the positioning pin 21 and the positioning hole 31 have a positioning effect, facilitating disassembly and assembly of the middle mold 3, and greatly improving the accuracy of heat insulation cylinder forming, and the outer side of the middle mold 3 is arc-shaped and provided with a groove 33 for moving the middle mold 3, so that the middle mold 3 can be transported through a gripper in a factory, the gripper is clamped into the groove 33 of the middle mold 3, and sliding of the middle mold 3 during transportation can be prevented.

[0023] As shown in the figure, Figures 1-4 One end of the lower mold 2 is provided with a mold rod 22, the outer diameter of the mold rod 22 is smaller than the inner diameter of the cavity B, the mold rod 22 extends into the cavity B, one end of the upper mold 5 is provided with a plug 51, the plug 51 extends into the material cavity A and abuts against the mold rod 22, and a mold pressing cavity C is formed between the plug 51, the mold rod 22 and the casting mold 4.

[0024] Further, one end of the mold rod 22 is provided with a boss 23, the outer diameter of the boss 23 is smaller than the outer diameter of the mold rod 22; the plug 51 comprises two plug bodies with different diameters, wherein the upper plug body of the plug 51 has a diameter greater than the diameter of the lower plug body of the plug 51, and the diameter of the lower plug body of the plug 51 is smaller than the inner diameter of the cavity B, the lower plug body of the plug 51 extends into the cavity B and abuts against the boss 23, and the upper plug body of the plug 51 is arranged in close contact with the inner wall of the material cavity A.

[0025] As shown in the figure, Figure 1 And Figure 4As shown, the hot melt member 6 is arranged in the material cavity A, the hot melt member 6 is a single-wire plastic material, and the vulcanizing machine is used to heat and press the hot melt member 6 in the forming process, the upper die 5 is supported on the hot melt member 6, the hot melt member 6 after being heated and pressed is rapidly melted, the upper die 5 gradually sinks, the material plug 51 gradually injects the molten hot melt member 6 from the material cavity A into the lower cavity B, the material plug 51 also gradually extends into the material cavity A and is attached to the mold rod 22, until the material completely fills the cavity C of the mold and is vulcanized to form, and then the heat insulation cylinder can be taken out after cooling.

[0026] The preferred embodiments of the utility model have been described, and are not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A plastic insulating barrel mold characterized by, The mold comprises an upper mold, a lower mold, a middle mold and a casting mold piece, the middle mold is detachably arranged at one end of the lower mold, a through groove is arranged in the middle mold, the casting mold piece is arranged in the through groove, a material cavity and a mold cavity are arranged in the casting mold piece, the material cavity and the mold cavity are communicated, the diameter of the material cavity is larger than that of the mold cavity, a mold rod is arranged at one end of the lower mold, the mold rod extends into the mold cavity, a material plug is arranged at one end of the upper mold, the material plug extends into the material cavity and abuts against the mold rod, a mold pressing cavity is formed among the material plug, the mold rod and the casting mold piece.

2. A plastic insulated barrel mold according to claim 1, wherein One end of the mold rod is provided with a boss, the outer diameter of the boss is smaller than that of the mold rod, an upper section of the material plug is arranged close to the inner wall of the material cavity, and a lower section of the material plug abuts against the boss.

3. A plastic insulated barrel mold as defined in claim 1, wherein The casting mold piece comprises a mold core I and a mold core II, the mold core I and the mold core II are detachably connected, and a mold opening groove is arranged at the connecting position of the mold core I and the mold core II.

4. A plastic insulated barrel mold according to claim 1, wherein One end of the lower mold is provided with a positioning pin, one end of the middle mold is provided with a positioning hole, and the positioning pin extends into the positioning hole.

5. A plastic insulated barrel mold according to claim 1, wherein The mold further comprises a hot melting piece, the hot melting piece is arranged in the material cavity, and the upper mold is supported on the hot melting piece.

6. A plastic insulated barrel mold according to claim 1, wherein The outer side of the middle mold is arranged in an arc shape and is provided with a groove for moving the middle mold.

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