CN218310691U - Wax injection mold for inclined hole part - Google Patents

Abstract

The utility model relates to the technical field of casting, in particular to a wax injection mold for inclined hole parts, which comprises an upper mold and a lower mold, wherein the wax injection mold also comprises a core stripping assembly; the depoling assembly comprises a moving block driven by a cylinder, the inner end of the moving block is provided with a sliding core assembly and a male die shaft which are matched with the inner cavity of the inclined hole part, and the male die shaft is vertically embedded into the lower die; the sliding core assembly sequentially comprises a core block B and a core block A which are in sliding fit from top to bottom; the moving block is configured to synchronously drive the core block A and enable the core block A to pull out the core block B; the moving block is in sliding fit with the lower die. Therefore, the labor is saved, and the overall production efficiency is improved; simultaneously, can also avoid causing the damage to wax spare when the inclined hole drawing of patterns.

Description

Wax injection mold for inclined hole part

Technical Field

The utility model relates to a casting technical field, in particular to penetrate wax mould for inclined hole part.

Background

The precision casting is also called lost wax casting, the product of the lost wax casting is precise and complex, is close to the final shape of a part, can be directly used without machining or with little machining, and is an advanced process for forming a near net shape. Common processes include investment casting, ceramic casting, metal casting, pressure casting, lost foam casting, and the like. For investment casting, wax is usually used to make a wax pattern of the part to be cast, then the wax pattern is coated with zircon sand and other materials to make a shell, and then the processes of drying, melting wax, casting, shelling, post-treatment and the like are carried out to complete the required part.

For the manufacture of wax molds, a wax injection machine and a matched wax injection mold are commonly used. The wax injection machine comprises a machine body, a T-shaped groove workbench, a pressing template and a hydraulic cylinder for driving the pressing template to vertically move, an upper die of a wax injection die is installed on the pressing template, a lower die is fixed on the T-shaped groove workbench, a cavity of a corresponding part can be formed when the upper die and the lower die are closed, and wax injection holes communicated with the cavity are formed in parting surfaces of the upper die and the lower die. Common products of precision casting include ball valves, gate valves, stop valves, check valves, butterfly valves, filters, special valves, biological food valves, quick connectors, pipe fittings, special castings and workpieces, polished parts, and the like. The inclined hole part produced in batch as shown in fig. 1 takes a plane plate as a main body, an inclined cylinder is arranged on the plane plate, and a coaxial inclined hole is formed in the cylinder.

In actual production, aiming at the inclined hole, the wax injection and wax mold taking processes are often completed by manually disassembling and assembling the wax injection mold, time and labor are wasted, the production efficiency is low, and particularly, the inclined hole is frequently damaged during demolding, and the requirement of batch production cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a defect and not enough that exist among the prior art are overcome to aim at, for this reason the utility model provides a penetrate wax mould for inclined hole part can guarantee that the inclined hole drawing of patterns is smooth, avoids wax spare to damage, provides production efficiency.

In order to achieve the purpose, the utility model provides a wax injection mould for inclined hole parts, which comprises an upper mould and a lower mould, wherein the wax injection mould also comprises a core stripping component; the depoling assembly comprises a moving block driven by a cylinder, the inner end of the moving block is provided with a sliding core assembly and a male die shaft which are matched with the inner cavity of the inclined hole part, and the male die shaft is vertically embedded into the lower die; the sliding core assembly sequentially comprises a core block B and a core block A which are in sliding fit from top to bottom; the mobile block is configured to be able to simultaneously bring the pellet a and to enable the pellet a to pull out the pellet B; the moving block is in sliding fit with the lower die.

Further, the decoring assembly further comprises a bracket; the cylinder is fixed on the lower die through the support.

Furthermore, a dovetail groove is formed in the top of the core block A; the bottom of the core block B is matched with the dovetail groove.

Further, the bottom of the core block B is provided with a sliding groove, and the top of the core block A is provided with a sliding block; the sliding block is matched with the sliding groove.

Further, the core block A is embedded into the moving block in an interference mode, and the moving direction of the core block A is parallel to the center line of the inclined hole in the inclined hole part.

Furthermore, two sides of the moving block are respectively provided with a pressing plate which is bolted on the lower die; the bottom of the moving block slides between the pressing plate and the lower die.

Further, the wax injection mold further comprises an upper substrate; the upper mold is bolted on the upper substrate.

Further, the wax injection mold further comprises a material ejection assembly, the material ejection assembly is located inside a base, and the base is located below the lower mold; the ejection assembly comprises an ejection plate and a plurality of pillars; the ejector plate is vertically provided with a plurality of guide posts A, hole-forming core rods and ejector pins, and the guide posts A, the hole-forming core rods and the ejector pins all penetrate through the lower die in a sliding manner; a spring is sleeved on the guide post A and is positioned between the ejector plate and the lower die; the support column is vertically fixed on the base; the support column penetrates through the ejector plate in a sliding mode and supports the lower die.

Further, the ejector plate comprises an upper ejector plate and a lower ejector plate which are bolted into a whole; the bottoms of the guide column A, the hole forming core rod and the ejector pin are all clamped between the upper ejector plate and the lower ejector plate.

Compared with the prior art, the beneficial effects of the utility model are that: the moving block is driven by the cylinder to move along the direction of the central line of the inclined hole in the inclined hole part, so that the core block A is pulled out of the tail end of the sliding groove through the sliding block, manpower is saved, the production efficiency is improved, and meanwhile, the wax part is prevented from being damaged during inclined hole demoulding.

Drawings

FIG. 1 is a schematic view of a slant hole part;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

FIG. 5 is a schematic structural view of the lower mold of FIG. 2;

fig. 6 is a schematic view showing the structure of the sliding core assembly and the male mold shaft of fig. 4.

Wherein: 1. an upper die; 2. a lower die; 3. a decoring assembly; 4. an upper substrate; 5. a base; 6. a slant hole part; 7. a material ejecting component; 8. a guide post B; 9. a guide sleeve; 31. a cylinder; 32. a support; 33. a moving block; 34. core block A; 35. a core block B; 36. a male mold shaft; 37. a slider; 38. pressing a plate; 71. a lower ejector plate; 72. a material jacking plate is arranged; 73. a pillar; 74. a guide post A; 75. a spring; 76. forming a hole core rod; 77. a thimble; 341. a dovetail groove; 351. a sliding groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Examples

Referring to fig. 1 to 6, the present invention provides a wax injection mold for inclined hole parts, which includes an upper mold 1 and a lower mold 2, wherein the wax injection mold further includes a core removing assembly 3; the depoling assembly 3 comprises a moving block 33 driven by a cylinder 31, the inner end of the moving block 33 is provided with a sliding core assembly and a male die shaft 36 matched with the inner cavity of the inclined hole part 6, and the male die shaft 36 is vertically embedded into the lower die 2; the sliding core assembly comprises a core block B35 and a core block A34 which are in sliding fit in sequence from top to bottom; the moving block 33 is configured to simultaneously carry the core blocks A34 and enable the core blocks A34 to pull out the core blocks B35; the moving block 33 is slidably fitted to the lower die 2.

Preferably, the decoring assembly 3 further comprises a bracket 32; the cylinder 31 is fixed to the lower die 2 by a bracket 32.

Preferably, the top of the core block a34 is provided with a dovetail groove 341; the bottom of the core block B35 is fitted with the dovetail groove 341.

As an embodiment of the present invention, the bottom of the core block B35 is provided with a sliding groove 351, and the top of the core block a34 is provided with a sliding block 37; the slider 37 and the slide groove 351 are matched. Thereby, the core block a34 pulls out the core block B35 through the slide block 37 and the slide groove 351.

As an embodiment of the present invention, the core block a34 is inserted into the moving block 33 in an interference manner, and the moving direction of the core block a34 is parallel to the central line of the inclined hole on the inclined hole part 6. With this, during the movement of the core block a34, the core block B35 moves vertically downward so that the core block B35 is out of contact with the wax, and then the core block a34 pulls out the core block B35 by the slide block 37.

Preferably, two sides of the moving block 33 are respectively provided with a pressing plate 38, and the pressing plates 38 are bolted to the lower die 2; the bottom of moving block 33 slides between platen 38 and lower die 2.

As an embodiment of the present invention, the wax injection mold further includes an upper substrate 4; the upper die 1 is bolted to the upper substrate 4. The upper base plate 4 is here intended to be mounted on a wax injection machine.

As an embodiment of the utility model, the wax injection mold further comprises a material ejecting component 7, the material ejecting component 7 is positioned inside the base 5, and the base 5 is positioned below the lower mold 2; the ejection assembly 7 comprises an ejection plate and a plurality of pillars 73; a plurality of guide posts A74, hole-forming core rods 76 and ejector pins 77 are vertically arranged on the ejector plate, and the guide posts A74, the hole-forming core rods 76 and the ejector pins 77 all penetrate through the lower die 2 in a sliding manner; a spring 75 is sleeved on the guide post A74, and the spring 75 is positioned between the ejector plate and the lower die 2; the pillar 73 is vertically fixed on the base 5; the pillars 73 slide through the ejector plate and support the lower die 2. Therefore, the ejector plate is pushed to move upwards by an external hydraulic cylinder, and the ejector plate drives the ejector pin 77 and the hole forming core rod 76 to move upwards to automatically eject the wax piece of the finished inclined hole part 6.

Preferably, the ejector plate includes an upper ejector plate 72 and a lower ejector plate 71 which are bolted as one body; the guide post a74, the hole-forming core rod 76 and the bottom of the ejector pin 77 are sandwiched between the upper ejector plate 72 and the lower ejector plate 71.

Preferably, the lower die 2 is provided with a plurality of guide posts B8, guide sleeves 9 are sleeved on the guide posts B8, and the guide sleeves 9 are in sliding fit with the upper die 1.

Based on above-mentioned, according to the production requirement, the one shot forming a plurality of inclined hole part 6, corresponding depoling subassembly 3 and liftout subassembly 7 also set up a plurality of, specifically no longer gives details.

The utility model discloses a theory of operation:

after the wax injection process is completed, the upper die 1 is lifted, the cylinder 31 drives the moving block 33 to move outwards along the direction of the central line of the inclined hole on the inclined hole part 6, the core block A34 moves along with the moving block 33, and due to the sliding fit between the core block A34 and the core block B35, during the moving process of the core block A34, the core block B35 moves downwards, so that the core block B35 can be separated from the corresponding inner cavity on the wax, and then the core block A34 moves to the tail end of the sliding groove 351 through the slide block 37 to pull out the core block B35.

When the wax injection is needed, the cylinder 31 pushes the moving block 33 to move inwards along the direction of the central line of the inclined hole on the inclined hole part 6, and the ends of the core block A34 and the core block B35 are pressed against the convex mold shaft 36 for forming the inner cavity of the inclined hole part 6. At this time, the upper die 1 is pressed down, the moving block 33, the core block a34, the core block B35, the punch shaft 36, the hole forming core rod 76, and the cavity of the inclined hole part 6 are formed between the upper die 1 and the lower die 2, and then, wax is injected into the cavity through the wax injection port between the upper die 1 and the lower die 2.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Therefore, the above-described embodiments of the present invention should be considered only as illustrative and not restrictive, the scope of the present invention being indicated by the appended claims, and any changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (9)

1. A wax injection mold for inclined hole parts comprises an upper mold (1) and a lower mold (2), and is characterized by further comprising a core stripping assembly (3); the core removing assembly (3) comprises a moving block (33) driven by a cylinder (31), a sliding core assembly and a male die shaft (36) which are matched with the inner cavity of the inclined hole part (6) are arranged at the inner end of the moving block (33), and the male die shaft (36) is vertically embedded into the lower die (2); the sliding core assembly comprises a core block B (35) and a core block A (34) which are in sliding fit in sequence from top to bottom; the moving block (33) is configured to synchronously bring the core block A (34) and enable the core block A (34) to pull out the core block B (35); the moving block (33) is in sliding fit with the lower die (2).

2. Wax injection mold according to claim 1, wherein the decoring assembly (3) further comprises a holder (32); the cylinder (31) is fixed on the lower die (2) through the bracket (32).

3. The wax injection mold according to claim 1, wherein the top of the core block A (34) is provided with a dovetail groove (341); the bottom of the core block B (35) is matched with the dovetail groove (341).

4. The wax injection mold according to claim 3, wherein the bottom of the core block B (35) is provided with a sliding groove (351), and the top of the core block A (34) is provided with a sliding block (37); the sliding block (37) is matched with the sliding groove (351).

5. The wax injection mold according to claim 4, wherein the core block A (34) is inserted into the moving block (33) with interference, and the moving direction of the core block A (34) is parallel to the center line of the inclined hole on the inclined hole part (6).

6. The wax injection mold according to claim 1, wherein a pressure plate (38) is respectively provided on both sides of the moving block (33), and the pressure plate (38) is bolted to the lower mold (2); the bottom of the moving block (33) slides between the pressure plate (38) and the lower die (2).

7. Wax injection mold according to any of claims 1 to 6, further comprising an upper substrate (4); the upper die (1) is bolted to the upper base plate (4).

8. The wax injection mold according to claim 7, further comprising a topping assembly (7), wherein the topping assembly (7) is located inside a base (5), and the base (5) is located below the lower mold (2); the ejection assembly (7) comprises an ejection plate and a plurality of pillars (73); a plurality of guide posts A (74), hole-forming core rods (76) and ejector pins (77) are vertically arranged on the ejector plate, and the guide posts A (74), the hole-forming core rods (76) and the ejector pins (77) all penetrate through the lower die (2) in a sliding manner; a spring (75) is sleeved on the guide column A (74), and the spring (75) is positioned between the ejector plate and the lower die (2); the support column (73) is vertically fixed on the base (5); the support column (73) penetrates through the ejector plate in a sliding mode and supports the lower die (2).

9. The wax injection mold according to claim 8, wherein the ejector plate comprises an upper ejector plate (72) and a lower ejector plate (71) bolted as one body; the bottoms of the guide column A (74), the hole forming core rod (76) and the ejector pin (77) are clamped between the upper ejector plate (72) and the lower ejector plate (71).

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