Wax pattern structure for gravity casting of lost wax method blade

Abstract

The utility model relates to a wax mould structure for lost wax method gravity casting vane, including mutually matched upper and lower mould structure, be equipped with several blade cavities between upper and lower mould structure, one side of upper and lower mould structure is equipped with total sprue, and total sprue is linked together with blade cavity through a runner system, and the runner system includes the runner of setting around several blade cavities, and the runner is linked together with every blade cavity through side sprue, and the bottom of blade cavity is equipped with top piece structure. When using, through setting multiple side sprues, make pouring liquid injects blade cavity from inside corner mouth, and the process is short, and at the same time, pouring liquid will not be straight to the product side wall, let cold partition bubble and so on appearance defect control on non - product surface, will not form obvious joint line, dispense with manual repair, when opening mould, through top piece structure, multiple blades are ejected simultaneously, guarantee the stress of ejecting product even and the dimensional accuracy of blade, improved product quality, reduced production cost.

Description

Technical Field

[0001] This utility model relates to the technical field of lost-wax gravity casting, specifically to a wax pattern structure for lost-wax gravity casting blades. Background Technology

[0002] In traditional technical solutions, blades are generally machined one by one, which takes a long time and results in high product costs. In addition, there are differences in precision between products that are machined one by one.

[0003] The improved solution uses a blade wax mold structure for casting. In this method, half of the feed port is used for feeding, which results in a large time difference in filling each blade, causing product deformation. The appearance usually has obvious joint lines, which require manual repair, resulting in high costs and low production efficiency.

[0004] Therefore, there is an urgent need in the market for a wax mold structure that can be mass-produced to manufacture high-precision blades, in order to reduce costs and improve efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an improved wax mold structure for lost-wax gravity casting blades. Through structural improvements, multiple blades are ejected simultaneously by multiple corresponding top plates, and multiple side gates are provided, so that the product does not form obvious joint lines, thereby improving precision and quality and saving costs.

[0006] To achieve the above objectives, the technical solution of this utility model is: a wax pattern structure for gravity casting blades using the lost-wax method, comprising upper and lower mold structures that cooperate with each other, characterized in that: a plurality of blade cavities are provided between the upper and lower mold structures, a main gate is provided on one side of the upper and lower mold structures, the main gate is connected to the blade cavities through a gating system, the gating system includes gating channels arranged around the plurality of blade cavities, the gating channels are connected to each blade cavity through side gates, and a top plate structure is provided at the bottom of the blade cavity.

[0007] Preferably, the top plate structure includes a circular top plate with several evenly distributed top pillars on the top plate, each top pillar corresponding to a blade cavity, and several top plates at the bottom of the top plate.

[0008] Furthermore, the runner is circular, with several raised side gates. The side gates are connected to the runner via portal pipes. The height of the side gates is higher than the height of the top column. The side gates are connected to the top column via a connecting surface that matches the shape of the bottom of the blade cavity.

[0009] Furthermore, a gap of 3-8mm is provided between the top plate and the gating system, and the outer side of the top column is a vertical section that is flush with the outer circular surface of the top plate.

[0010] Furthermore, the ejector pin is positioned below the top of the blade cavity, acting as an ejector pin to eject the blade.

[0011] Furthermore, the side gate is located inside the blade cavity, and the distance between it and the bottom and top surfaces of the blade cavity is 3-10mm.

[0012] Furthermore, the lower mold structure is equipped with guide pillars, and the upper mold structure is equipped with guide holes that cooperate with the guide pillars. Through the cooperation of the guide pillars and guide holes, the upper and lower mold structures can be precisely matched.

[0013] Compared with the prior art, the technical solution of this utility model not only improves the overall technical solution, but also includes many detailed improvements. Specifically, it has the following beneficial effects: The improved solution of this utility model has several blade cavities between the upper and lower mold structures. A main gate is provided on one side of the upper and lower mold structures. The main gate is connected to the blade cavities through a gating system. The gating system includes gating channels arranged around several blade cavities. The gating channels are connected to each blade cavity through side gates. A top plate structure is provided at the bottom of the blade cavity. Through the top plate structure, each blade is ejected by a top post, which ensures uniform force on the ejected product and the dimensional accuracy of the blade, thereby improving product quality. In the technical solution of this utility model, the gating system is circular, and there are several raised side gates on the gating system. The side gates are connected to the gating system through a gate-shaped pipe. The height of the side gates is higher than the height of the top column. The side gates are connected to the top column through a connecting surface. This connecting surface matches the shape of the bottom of the blade cavity. By setting multiple side gates, the pouring liquid will not directly hit the side wall of the product, but will instead be on the bottom side of the product. This allows appearance defects such as cold shuts and bubbles to be controlled on a non-product surface, preventing the formation of obvious joint lines, eliminating the need for manual repair, improving work efficiency, and reducing production costs. This utility model has a simple structure, reasonable layout, and easy operation, which improves production efficiency and facilitates promotion and utilization. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the upper mold structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the lower mold structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the usage state of this utility model.

[0017] Figure 4 This is a schematic diagram showing the combination of the gating system and the top plate structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the top plate structure of this utility model.

[0019] Figure label: 1 Upper mold structure, 2 Lower mold structure, 3 Blade cavity, 4 Main gate, 5 Runner system, 6 Top plate structure, 7 Clearance; 11 guide holes; 21 guide pillars; 51 Side gate, 52 Runner; 61. Top plate, 62. Top column, 63. Top slab; 621 vertical section. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] This utility model provides a wax pattern structure for gravity casting blades using the lost-wax method, see details below. Figure 1 , 2 It includes an upper mold structure 1 and a lower mold structure 2 that cooperate with each other. The difference between it and the prior art is that: there are several dispersed blade cavities 3 between the upper and lower mold structures, a main gate 4 is provided on one side of the upper and lower mold structures, the main gate is connected to the blade cavity through a gating system 5, the gating system includes gatings arranged around several blade cavities, the gatings are connected to each blade cavity through a side gate 51, and a top plate structure 6 is provided at the bottom of the blade cavity.

[0022] In use, by setting multiple side gates 51, the casting liquid is injected into the blade cavity from the inner corner opening, resulting in a short flow path. Simultaneously, the casting liquid does not directly impact the product's sidewalls but rather remains on the bottom side, keeping appearance defects such as cold shuts and air bubbles on non-product surfaces, preventing the formation of obvious weld lines, eliminating the need for manual repairs, and improving work efficiency. Furthermore, each blade cavity has a top pillar structure at its bottom, allowing multiple blades to be ejected simultaneously during mold opening. This ensures uniform force distribution and dimensional accuracy of the ejected products, improving product quality and reducing production costs.

[0023] Example 1 This embodiment describes the wax pattern structure used for gravity casting blades in the lost-wax method. See details below. Figure 1 , 2The invention includes upper and lower mold structures that cooperate with each other. Its difference from the prior art is that: there are several dispersed blade cavities 3 between the upper and lower mold structures, and a main gate 4 is provided on one side of the upper and lower mold structures. The main gate is connected to the blade cavity through a gating system 5. The gating system includes gating channels 52 arranged around several blade cavities. The gating channels are connected to each blade cavity through side gates, so that the injection liquid is injected into the blade cavity from the inner corner opening. The flow is short. At the same time, the injection liquid will not directly hit the side wall of the product, but on the bottom side of the product. This allows appearance defects such as cold shuts and bubbles to be controlled on non-product surfaces, and will not form obvious joint lines, eliminating the need for manual repair. The bottom of the blade cavity is provided with a top plate structure.

[0024] Specifically, such as Figure 5 As shown, the top plate structure 6 includes a circular top plate 61 with several evenly distributed ejector pins 62. Each ejector pin corresponds to a blade cavity. Several top plates 63 are arranged around the circular top plate at its bottom. During mold opening, the top plate structure ejects multiple blades simultaneously, with one ejector pin corresponding to one blade. This ensures uniform force distribution on the ejected product and maintains the dimensional accuracy of the blades, thus improving product quality.

[0025] Furthermore, such as Figure 4 As shown, the runner 52 is circular, with several raised side gates. The side gates are connected to the runner via "gate" shaped pipes. The height of the side gates is higher than the height of the top column, with a height difference of 1-3mm. The side gates are connected to the top column via a connecting surface, which matches the shape of the bottom of the blade cavity to ensure the force balance during ejection and the dimensional accuracy of the blade.

[0026] A gap 7, 3-8mm, is provided between the top plate and the sprue. The outer side of the ejector pin has a vertical cross-section 621, which is flush with the outer circular surface of the top plate. This ensures that the ejector pin can move independently without interference during the lifting process, guaranteeing the effectiveness of the lifting. The ejector pin is located below the top of the blade cavity and acts as an ejector pin. Multiple ejector pins move simultaneously, causing multiple blades to be ejected at the same time, improving efficiency.

[0027] The side gate is located inside the blade cavity, with a distance of 3-10mm between it and the bottom and top surfaces of the blade cavity. This prevents the casting liquid from directly hitting the side wall of the product, but instead allows it to flow around to the bottom side of the casting ingate. This keeps appearance defects such as cold shuts and bubbles on non-product surfaces, preventing the formation of obvious weld lines, eliminating the need for manual repairs, improving work efficiency, and reducing production costs.

[0028] The lower mold structure is provided with guide posts 21, and the upper mold structure is provided with guide holes 11 that cooperate with the guide posts. Through the cooperation of the guide posts and the guide holes, the upper and lower mold structures are precisely matched.

[0029] Example 2 This embodiment describes a wax pattern structure for gravity casting blades using the lost-wax method, including upper and lower mold structures that cooperate with each other. The difference from the prior art is that: several blade cavities 3 are provided between the upper and lower mold structures, a main gate 4 is provided on one side of the upper and lower mold structures, the main gate is connected to the blade cavities through a gating system 5, the gating system includes gating channels arranged around several blade cavities, the gating channels are connected to each blade cavity through side gates, and a top plate structure 6 is provided at the bottom of the blade cavity.

[0030] Specifically, such as Figure 4 , 5 In this design, the top plate is shaped like the bottom surface of a blade, and each blade is ejected by a single ejector pin. This ensures balanced force and high efficiency in the ejected product, and leaves no visible ejector pin marks on the product's surface. It also guarantees the dimensional accuracy of the blades, eliminates the need for blade machining, and reduces costs.

[0031] At the same time, four side gates are set, such as Figure 4 As shown, this allows the casting liquid to be injected into the product cavity from the inner corner openings, resulting in a shorter process, no obvious joint lines, eliminating the need for manual repairs, improving efficiency, and saving costs.

[0032] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A wax pattern structure for gravity casting blades using the lost-wax method, comprising upper and lower mold structures that cooperate with each other, characterized in that: Several blade cavities are provided between the upper and lower mold structures. A main gate is provided on one side of the upper and lower mold structures. The main gate is connected to the blade cavities through a gating system. The gating system includes gatings arranged around several blade cavities. The gatings are connected to each blade cavity through side gates. A top plate structure is provided at the bottom of the blade cavity.

2. The wax pattern structure for lost-wax gravity casting blades according to claim 1, characterized in that: The top plate structure includes a circular top plate with several evenly distributed top pillars on it. Each top pillar corresponds to a blade cavity. The bottom of the top plate has several top plates.

3. Wax pattern structure for gravity casting of a blade by the lost wax method according to claim 2, characterized in that: The runner is circular and has several raised side gates. The side gates are connected to the runner through a portal pipe. The height of the side gates is higher than the height of the top column. The side gates and the top column are connected by a connecting surface that matches the shape of the bottom of the blade cavity.

4. A wax pattern structure for gravity casting a blade by the lost wax method according to claim 2, characterized in that: A gap of 3-8mm is provided between the top plate and the gating system. The outer side of the top column is a vertical section, which is flush with the outer circular surface of the top plate.

5. The wax pattern structure for lost-wax gravity casting blades according to claim 1, characterized in that: The ejector pin is located below the top of the blade cavity and acts as an ejector pin to eject the blade.

6. A wax pattern structure for lost wax gravity casting of a blade according to claim 3, characterized in that: The side gate is located inside the blade cavity, and the distance between it and the bottom and top surfaces of the blade cavity is 3-10mm.

7. The wax pattern structure for lost-wax gravity casting blades according to claim 1, characterized in that: The lower mold structure is equipped with guide pillars, and the upper mold structure is equipped with guide holes that cooperate with the guide pillars. Through the cooperation of the guide pillars and guide holes, the upper and lower mold structures can be precisely matched.

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