Wax mold structure for gravity casting of turbocharger cover plate through lost wax method

Abstract

The utility model relates to a wax mould structure for gravity casting of a turbocharger cover plate by a lost wax method, a group tree pouring gate and a plurality of groups of mutually parallel cavities are arranged between an upper mould plate and a lower mould plate, and each cavity comprises an inner pouring gate, a product pouring cavity connected with the inner pouring gate and a sliding block cavity; the flow gate is connected with the assembly pouring gate, a V-shaped groove structure is arranged between the flow gate and the product pouring cavity, an ejector plate ejector pin is arranged below the assembly pouring gate and the flow gate, and a sliding block is arranged in the sliding block cavity. In the implementation process, injected wax enters the tree assembling pouring gate and enters the product pouring cavity through the inner pouring gate, after cooling, the upper mold plate and the lower mold plate are opened, the sliding block is also parted, the tree assembling pouring gate and the cover plate wax piece are connected together and ejected out at the same time, and the process that the cover plate wax piece and the tree assembling pouring gate need to be glued one by one is omitted. The inner pouring gate is designed to be of the V-shaped groove structure, after a product is poured, a formed cover plate part can fall off by knocking the V-shaped groove structure, the working procedure of cutting machining is omitted, and the precision of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a lost wax gravity casting turbocharger, in particular to a wax mold structure for a lost wax gravity casting turbocharger cover plate. Background Art

[0002] In the prior art, the wax mold structure of the upper cover plate parts is usually a three-plate point gate or a two-plate structure with a large gate. Each wax piece needs to be processed separately after it comes out of the mold. At the same time, after the wax is injected and cooled, the cover plate wax pieces need to be glued to the runner one by one with glue, which is costly and prone to defects such as loose bonding and wax dripping, resulting in product scrapping or substandard quality.

[0003] In the processing technology, since each cover plate part needs to be cut one by one from the whole string with a cutting machine after pouring, the cutting cost is high, and many parts are scrapped due to cutting, resulting in high processing costs, time-consuming and labor-intensive, and low production efficiency.

[0004] Therefore, there is an urgent need in the market for a wax mold structure that can solve the above problems, improve production efficiency and reduce costs. Summary of the invention

[0005] The utility model aims to provide an improved wax mold structure for a turbocharger cover plate by lost wax gravity casting. Through the improvement of the structure, the steps of gluing the cover plate wax pieces to the runners one by one and cutting the cover plate parts one by one after casting are omitted, thereby reducing the cost and improving the accuracy and efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is: a wax mold structure for a turbocharger cover plate of a lost wax gravity casting method, comprising a group of upper and lower templates that cooperate with each other, characterized in that: a group tree runner and a plurality of groups of parallel cavities are provided between the upper and lower templates, each cavity comprises an inner gate, a product pouring cavity connected to the inner gate, and a slider cavity; the inner gate is connected to the group tree runner, a V-shaped groove structure is provided between the inner gate and the product pouring cavity, an ejector plate ejector is provided below the group tree runner and the inner gate, and a slider is provided in the slider cavity.

[0007] Preferably, a movable slider is provided in the slider cavity, and a slider ejector is provided between the product casting cavity and the slider; the angle range of the V-shaped inner gate is 60-85 degrees.

[0008] Furthermore, the ejector plate ejectors include middle ejector plate ejectors and side ejector plate ejectors, the middle ejector plate ejectors are arranged below the assembly tree runner, and the side ejector plate ejectors are arranged below the inner gate.

[0009] Furthermore, an upper mold panel is provided on the top of the upper mold, and an upper mold foot is provided between the upper mold panel and the upper mold panel; a lower mold panel is provided below the lower mold, and a lower mold foot is provided between the lower mold panel and the lower mold.

[0010] Furthermore, an ejector base plate is provided on the lower die panel, and the ejector plate ejector is connected to the ejector base plate through the ejector plate.

[0011] Compared with the prior art, the technical solution of the utility model not only improves the overall technical solution, but also includes many improvements in details. Specifically, it has the following beneficial effects:

[0012] 1. The improved scheme of the utility model is provided with a tree assembly runner and a plurality of mutually parallel cavities between the upper and lower templates, each cavity including an inner gate, a product pouring cavity connected to the inner gate, and a slider cavity, so that after wax injection, the cover plate wax part and the tree assembly runner are integrally formed, eliminating the process of gluing water, avoiding defects such as weak bonding or wax dripping, and reducing costs;

[0013] 2. In the technical solution of the utility model, the inner gate is connected to the assembly tree runner, a V-shaped groove structure is provided between the inner gate and the product casting cavity, an ejector plate ejector is provided below the assembly tree runner and the inner gate, and a slider is provided in the slider cavity. The V-shaped groove structure enables the cover plate parts formed after pouring to be knocked off with a wooden hammer, avoiding the process of cutting parts from the assembly tree runner, improving precision and reducing costs;

[0014] 3. In the structure of the utility model, a movable slider is provided in the slider cavity, and a slider ejector is provided between the product casting cavity and the slider. When the upper template is opened, the slider ejector is ejected synchronously to ensure that the cover plate wax parts after wax injection are connected with the assembly tree runner without being pulled, thereby ensuring the accuracy of subsequent product casting and improving product quality;

[0015] 4. The utility model has a simple structure, reasonable layout, convenient processing, improved work efficiency, saved time and effort, and reduced production and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial structural schematic diagram of the upper and lower templates of the utility model.

[0017] Figure 2 It is a schematic structural diagram of the upper mold part of the utility model.

[0018] Figure 3 It is a schematic structural diagram of the lower mold part of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the mold opening in one embodiment of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the cooperation between the cover plate wax piece and the tree assembly runner of the utility model.

[0021] Figure 6 It is a schematic diagram of the structure of the cooperation between the upper and lower mold parts in the embodiment of the utility model.

[0022] Figure 7 for Figure 6 Enlarged schematic diagram of part A in the middle.

[0023] Figure 8 It is another structural schematic diagram of the cooperation between the upper and lower mold parts in the embodiment of the utility model.

[0024] Fig. 9 for Figure 8 Enlarged schematic diagram of part C in the middle.

[0025] Reference numerals:

[0026] 1 upper template, 2 lower template, 3 groups of tree runners, 4 cavities, 5 sliders, 6 slider ejectors, 7 ejector plate ejectors, 8 cover plate wax parts;

[0027] 11 upper die panel, 12 upper die foot;

[0028] 21 lower die panel, 22 lower die foot, 23 ejector bottom plate, 24 ejector plate;

[0029] 31 ejection wax mouth;

[0030] 41 inner gate, 42 V-groove structure. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model provides a wax mold structure for gravity casting of a turbocharger cover plate by a lost wax method, comprising a set of upper and lower mold plates 1 and 2 that cooperate with each other. Figure 1 The difference between the present invention and the prior art lies in that: a tree group runner 3 and a plurality of mutually parallel cavities 4 are provided between the upper and lower templates 1 and 2, generally 2 to 8 cavities are provided, each cavity comprises an inner gate 41, a product pouring cavity connected to the inner gate and a slider cavity provided on one side of the product pouring cavity; the inner gate is connected to the tree group runner, a V-shaped groove structure 42 is provided between the inner gate and the product pouring cavity, an ejector plate ejector 7 is provided under the tree group runner and the inner gate, and a slider 5 is provided in the slider cavity.

[0033] During implementation, the injection wax first enters the tree assembly runner, and then enters the product casting cavity through the inner gate. After cooling, the upper and lower templates are opened, and the slider on one side is also separated, so that the tree assembly runner is connected to the cover plate wax piece 8 formed in the product casting cavity and is ejected at the same time, eliminating the process of gluing the cover plate wax piece 8 to the tree assembly runner one by one in the prior art. Because a V-shaped groove structure is provided between the inner gate of the utility model and the product casting cavity, after the product is cast, the formed cover plate parts can be dropped by hitting the V-shaped groove structure with a wooden hammer, eliminating the cutting process and improving the product precision.

[0034] Example 1

[0035] In this embodiment, a tree assembly runner 3 and 6 groups of parallel cavities 4 are provided between the upper and lower templates 1 and 2, and each cavity includes an inner gate 41, a product pouring cavity connected to the inner gate, and a slider cavity; the inner gate 41 is connected to the tree assembly runner 3, and a V-shaped groove structure is provided between the inner gate and the product pouring cavity, an ejector plate ejector 7 is provided below the tree assembly runner and the inner gate, and a slider 5 is provided in the slider cavity. The product pouring cavity is a cover plate wax part molding cavity, and a wax injection port 31 is provided at one end of the tree assembly runner. The injection wax enters the tree assembly runner through the wax injection port, and then enters the product pouring cavity through the tree assembly runner and the inner gate to form a cover plate wax part 8 in the product pouring cavity, and then demolding is performed to keep the cover plate wax part and the tree assembly runner forming an integral structure (see Figure 5 ).

[0036] Specifically, a movable slider 5 is provided in the slider cavity, and a slider ejector 6 is provided between the product pouring cavity and the slider; the V-groove angle of the V-groove structure ranges from 60 to 85 degrees, and the preferred angle is 80 degrees. A group of slider ejectors, one thick and one thin, is provided between each product pouring cavity and the slider, wherein the thick slider ejector is provided at the center of the product pouring cavity, and the thin slider ejector is connected to the product pouring cavity through a waist-shaped step.

[0037] Furthermore, the ejector plate ejector includes a middle ejector plate ejector and a side ejector plate ejector. The middle ejector plate ejector is arranged below the assembly tree runner, and the side ejector plate ejector is arranged below the inner gate. The diameter of the middle ejector is 2-3 times the diameter of the side ejector.

[0038] An upper mold panel 11 is provided on the top of the upper mold plate, and an upper mold foot 12 is provided between the upper mold plate 1 and the upper mold panel 11; a lower mold panel 21 is provided below the lower mold plate 2, and a lower mold foot 22 is provided between the lower mold panel 21 and the lower mold plate 2. An ejector bottom plate 23 is provided at the center of the lower mold panel 21, and the bottom of the ejector of the ejector plate is connected to the ejector bottom plate 23 through the ejector plate 24.

[0039] Example 2

[0040] The utility model discloses a wax mold structure for a turbocharger cover plate by lost wax gravity casting, comprising a group of upper and lower mold plates that cooperate with each other, a group tree runner and a plurality of groups of parallel cavities are arranged between the upper and lower mold plates, each cavity comprises an inner gate, a product pouring cavity connected to the inner gate, and a slider cavity; the inner gate is connected to the group tree runner, a V-shaped groove structure is arranged between the inner gate and the product pouring cavity, an ejector plate ejector is arranged below the group tree runner and the inner gate, and a slider is arranged in the slider cavity. A slider ejector is arranged between the product pouring cavity and the slider, and when the upper mold is opened, the slider ejector on the slider cavity side is synchronously ejected laterally to ensure that the cover plate wax product and the group tree runner are connected together after the wax injection, so as not to be damaged, thereby eliminating the bonding process, improving efficiency, and reducing costs.

[0041] A V-groove structure is provided between the inner gate and the product casting cavity. An ejector plate ejector is provided under the V-groove attachment, so that the V-groove can be separated from the lower template. The ratio of the smallest diameter of the V-groove structure to the diameter of the inner gate is 1:1.8-2. After the product is cast, the V-groove is hit with a wooden hammer, and the cover plate parts can fall off without the need for laborious cutting, thereby improving efficiency and reducing costs.

[0042] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to the above descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A wax mold structure for gravity casting of a turbocharger cover plate by lost wax method, comprising a set of upper and lower mold plates that cooperate with each other, characterized in that: A tree runner and several groups of parallel cavities are arranged between the upper and lower templates, each cavity includes an inner gate, a product pouring cavity connected to the inner gate, and a slider cavity; the inner gate is connected to the tree runner, a V-groove structure is arranged between the inner gate and the product pouring cavity, an ejector plate ejector is arranged under the tree runner and the inner gate, and a slider is arranged in the slider cavity.

2. The wax mold structure for lost wax gravity casting of a turbocharger cover plate according to claim 1, characterized in that: A movable slider is provided in the slider cavity, and a slider ejector pin is provided between the product casting cavity and the slider; the V-groove angle range of the V-groove structure is 60-85 degrees.

3. The wax mold structure for lost wax gravity casting of a turbocharger cover plate according to claim 1, characterized in that: The ejector plate ejectors include middle ejector plate ejectors and side ejector plate ejectors. The middle ejector plate ejectors are arranged below the assembly tree runner, and the side ejector plate ejectors are arranged below the inner gate.

4. The wax mold structure for lost wax gravity casting of a turbocharger cover plate according to claim 1, characterized in that: An upper mold panel is arranged on the top of the upper mold plate, and an upper mold foot is arranged between the upper mold plate and the upper mold panel; a lower mold panel is arranged below the lower mold plate, and a lower mold foot is arranged between the lower mold panel and the lower mold plate.

5. The wax pattern structure for lost wax gravity casting of a turbocharger cover plate according to claim 4, characterized in that: An ejector base plate is arranged on the lower die panel, and an ejector plate ejector is connected with the ejector base plate through the ejector plate.

6. The wax pattern structure for lost wax gravity casting of a turbocharger cover plate according to claim 1, characterized in that: The product pouring cavity is the cover plate wax part molding cavity, and a wax injection port is provided at one end of the assembly tree runner.

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