Universal wax injection mold
By using an elastic bellows and sponge to apply lubricant to the wax injection mold, combined with a sealing ring and spray hole to diffuse the lubricant, the problem of dimensional deviations in the wax mold caused by mold core wear was solved, improving the stability and accuracy of the mold and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-10
AI Technical Summary
When the existing wax injection mold is frequently changed, the mold core and the mold core mounting groove will experience mechanical wear due to repeated disassembly and assembly, which will increase the fit clearance. The mold core will undergo radial displacement under the pressure of molten wax, resulting in the wax mold dimensional deviation. Moreover, after the wear accumulates, the entire mold plate needs to be replaced, which increases the cost.
The system combines an elastic bellows with a sponge. The elastic bellows drives the sponge to scrape and apply lubricating oil to the side wall of the mounting groove, reducing friction. Combined with the sealing effect of the sealing ring and the annular groove, it prevents lubricating oil leakage. The lubricating oil is also diffused through the combination of the conduit and the spray hole, improving the stability of the mold core and the accuracy of the wax mold.
It effectively reduces the friction between the mold core and the mounting groove, ensures the mold core is stably fixed, prevents lubricating oil leakage, improves the accuracy of wax molds and the service life of molds, and reduces the frequency and cost of replacing mold plates.
Smart Images
Figure CN224101773U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wax mould casting technical field, specifically, relate to a kind of general injection wax mould. BACKGROUND
[0002] Wax mould is a kind of commonly used casting mode, investment casting is mainly composed of mould manufacturing, wax mould manufacturing, shell manufacturing and subsequent drying, baking, pouring, solidification etc.
[0003] In prior art, although the detachable core structure is used to improve the mold adaptability, but when frequently changing operation, mechanical wear will be caused between the core and the core mounting groove due to repeated disassembly and assembly, which leads to the increase of the fit clearance. Therefore, during the wax injection process, the core will be radially displaced under the pressure of molten wax, which causes the size of wax mould to be out of tolerance. After the accumulation of wear, the whole template needs to be replaced, which leads to the increase of cost. Therefore, a general injection wax mould is proposed. UTILITY MODEL CONTENT
[0004] To solve at least one aspect of the above problems, the utility model first provides a general injection wax mould, which comprises a fixed mould, a movable mould and a core. The bottom end of the core is fixedly installed with a clamping plate. Two independent mould cavities are formed on the fixed mould. An installation groove for placing the clamping plate is formed on the bottom wall of each mould cavity.
[0005] A supporting block is fixedly installed on the bottom wall of the installation groove. An elastic bellows is sleeved on the outside of the supporting block. The bottom end of the elastic bellows is fixedly connected with the bottom wall of the installation groove.
[0006] A circular sponge is fixedly sleeved on the outer sidewall of the elastic bellows. The sponge is immersed in lubricating oil.
[0007] Optionally, the top end of the elastic bellows is fixedly installed with a sealing plate.
[0008] Optionally, an annular groove is formed on the sidewall of the clamping plate. An annular sealing ring is embedded in the annular groove. The ratio of the diameter of the sealing ring to the diameter of the annular groove is 1.2-1.5. The sealing ring is a hollow structure.
[0009] Optionally, the distance between the top wall of the installation groove and the top wall of the clamping plate is 1mm.
[0010] Optionally, a cavity is formed on the fixed mould. A jet hole is formed on the top wall of the cavity. The jet hole is located directly below the sponge. A pressurizing mechanism is arranged on the fixed mould to pressurize the cavity.
[0011] Optionally, the pressurizing mechanism comprises a conduit fixedly embedded on the fixed mold, two ends of the conduit are communicated with the cavity and the elastic bellows respectively, an exhaust valve is fixedly installed at one end of the conduit in the elastic bellows, and an air inlet valve is fixedly embedded on the side wall of the elastic bellows.
[0012] Optionally, the exhaust valve is located between the top wall and the bottom wall of the supporting block.
[0013] Compared with the prior art, the universal wax injection mold in the utility model, (1) through the cooperation of the elastic bellows and the sponge, the elastic bellows drives the sponge to scrape on the side wall of the installation groove, so that the lubricating oil on the surface of the sponge can be applied to the side wall of the installation groove, the friction between the installation groove and the clamping plate is reduced, the fixing effect of the clamping plate is improved, and the clamping plate can be stably fixed in the installation groove, then the fixed mold and the movable mold are combined and molten wax is injected, so that the stability of the mold core is improved during the injection of the molten wax, and the precision of the wax mold is improved.
[0014] (2) through the cooperation of the sealing ring and the annular groove, when the clamping plate enters the installation groove, the sealing ring has a restoring tendency after deformation, so that the sealing ring is tightly attached to the side wall of the installation groove, thereby preventing the lubricating oil in the installation groove from leaking, and ensuring that the mold can be normally used.
[0015] (3) through the cooperation of the conduit and the injection hole, during the extrusion of the elastic bellows, the gas in the elastic bellows is discharged through the exhaust valve, at this time, the airflow flows into the cavity along the conduit, at this time, the high-pressure gas in the cavity is discharged through the injection hole and impacts the lubricating oil on the bottom wall surface of the installation groove, so that the lubricating oil is splashed and diffused, the lubricating oil contacts the sponge, and the coating effect on the surface of the installation groove is improved during the downward movement of the sponge, and the lubricating effect is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a structure diagram of the universal wax injection mold of the utility model embodiment;
[0017] Figure 2 It is a structure diagram of the fixed mold of the utility model embodiment;
[0018] Figure 3 It is a sectional view of the universal wax injection mold of the utility model embodiment;
[0019] Figure 4 It is Figure 3 It is an enlarged view of the A part in the middle.
[0020] MARKING OF THE DRAWINGS:
[0021] 1, fixed mold; 2, movable mold; 3, mold core; 4, clamping plate; 5, mounting groove; 6, support block; 7, elastic bellows; 8, sponge; 9, sealing plate; 10, sealing ring; 11, cavity; 12, injection hole; 13, conduit; 14, air inlet valve; 15, exhaust valve. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.
[0023] The utility model embodiment provides a kind of general-purpose wax injection mold, combined Figures 1 to 4 As shown in the figure, including fixed mold 1, movable mold 2 and mold core 3, the bottom end of the mold core 3 is fixedly installed with clamping plate 4, two independent mold cavities are set on the fixed mold 1, and mounting groove 5 for placing the clamping plate 4 is set on the bottom wall of each mold cavity.
[0024] Support block 6 is fixedly installed on the bottom wall of the mounting groove 5, the outside of the support block 6 is sleeved with elastic bellows 7, and the bottom end of the elastic bellows 7 is fixedly connected with the bottom wall of the mounting groove 5.
[0025] The outer side wall of the elastic bellows 7 is fixedly sleeved with annular sponge 8, and the sponge 8 is immersed in lubricating oil.
[0026] In the embodiment, the elastic bellows 7 includes a spring and a sleeve, the upper and lower ends of the spring are fixedly connected with the sleeve, and the spring drives the sleeve to stretch and contract together. Preferably, the sleeve is sleeved outside the spring and forms a sealed chamber to accommodate the spring. The sleeve is a metal material bellows, which has good high-temperature resistance while ensuring stretchability.
[0027] Further, the top end of the elastic bellows 7 is fixedly installed with a sealing plate 9, which can block the bellows and prevent lubricating oil from entering the bellows, thereby saving costs.
[0028] In the initial state, the elastic bellows 7 is in a natural stretched state, and at this time, the top wall of the sponge 8 and the top wall of the mounting groove 5 are in the same plane.
[0029] When the mold core 3 is installed, the clamping plate 4 on the base of the mold core 3 is aligned with the installation groove 5, the clamping plate 4 is attached to the sealing plate 9, and then pressure is applied to the clamping plate 4 in the direction close to the installation groove 5. At this time, the clamping plate 4 gradually enters the installation groove 5, and the elastic bellows 7 gradually shrink. In this process, the elastic bellows 7 drive the sponge 8 to scrape on the side wall of the installation groove 5, so that the lubricating oil on the surface of the sponge 8 can be applied to the side wall of the installation groove 5, reducing the friction between the installation groove 5 and the clamping plate 4, improving the fixing effect of the clamping plate 4, and ensuring that the clamping plate 4 can be stably fixed in the installation groove 5. Then the fixed mold 1 and the movable mold 2 are closed and molten wax is injected, thereby improving the stability of the mold core 3 during the injection of molten wax, and improving the precision of the wax mold.
[0030] The support block 6 can provide support to the sealing plate 9, and protect the elastic bellows 7.
[0031] Further, as shown in Figure 3 , an annular groove is formed in the side wall of the clamping plate 4, and a ring-shaped sealing ring 10 is embedded in the annular groove. The ratio of the diameter of the sealing ring 10 to the diameter of the annular groove is 1.2-1.5, and the sealing ring 10 is a hollow structure. Therefore, when the sealing ring 10 is extruded, the sealing ring 10 can deform and retract into the annular groove.
[0032] When the clamping plate 4 enters the installation groove 5, the deformed sealing ring 10 has a tendency to recover, so the sealing ring 10 tightly fits the side wall of the installation groove 5, thereby preventing the lubricating oil in the installation groove 5 from leaking, and ensuring that the mold can be used normally.
[0033] As shown in Figure 3 , further, the distance between the top wall of the installation groove 5 and the top wall of the clamping plate 4 is 1mm.
[0034] Since the sealing ring 10 can scrape the lubricating oil on the surface of the installation groove 5 clean during movement, by reducing the distance between the sealing ring 10 and the top wall of the clamping plate 4, the contact area between the non-lubricated part of the side wall of the installation groove 5 and the clamping plate 4 can be reduced, thereby reducing the degree of wear between the clamping plate 4 and the side wall of the installation groove 5.
[0035] As shown in Figure 4 , further, a cavity 11 is formed in the fixed mold 1, a spray hole 12 is formed in the top wall of the cavity 11, the spray hole 12 is located directly below the sponge 8, and a pressurizing mechanism is provided on the fixed mold 1 to pressurize the cavity 11.
[0036] Furthermore, the pressurizing mechanism includes a conduit 13 fixedly embedded in the fixed mold 1. The two ends of the conduit 13 are respectively connected to the cavity 11 and the elastic bellows 7. An exhaust valve 15 is fixedly installed at one end of the conduit 13 located inside the elastic bellows 7. An air inlet valve 14 is fixedly embedded on the side wall of the elastic bellows 7.
[0037] During the compression of the elastic bellows 7, the gas inside the elastic bellows 7 is discharged through the exhaust valve 15. At this time, the airflow flows along the guide tube 13 into the cavity 11. The high-pressure gas in the cavity 11 is discharged through the injection hole 12 and impacts the lubricating oil on the bottom wall surface of the mounting groove 5, thereby enabling the lubricating oil to splash and spread, and to come into contact with the sponge 8. As the sponge 8 moves downward, the coating effect on the surface of the mounting groove 5 is improved, which plays a role in improving the lubrication effect.
[0038] When the flexible bellows 7 extends, air is drawn from the mounting slot 5 through the air inlet valve 14, preparing for the next operation. Figure 1 As shown, the lubricating oil is a liquid lubricating oil.
[0039] like Figure 3 As shown, the exhaust valve 15 is further located between the top and bottom walls of the support block 6, thereby ensuring that the elastic bellows 7 can extend and retract normally.
[0040] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.
[0041] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0042] In addition, the terms "first", "second", and the like, are used only for descriptive purposes, and do not denote or imply a relative importance or an implied direction of indicated technical features. Thus, a feature defined with "first", "second", and the like, can include at least one of the features explicitly or implicitly. In the description of the disclosure, the meaning of "a plurality of" is at least two, for example, two, three, and the like, unless otherwise explicitly specified and limited.
[0043] In the disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", and the like, should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the disclosure can be understood according to the specific circumstances.
[0044] In the disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0045] It should be noted that when an element is referred to as "fixed to", "provided to", "fixed to" or "installed to" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected to" another element, it can be directly connected to another element or a middle element can exist at the same time. Further, when an element is considered to be "fixedly connected" to another element, the two can be fixed in a detachable manner, or they can be fixed in a non-detachable manner, such as sleeving, clamping, integral forming, welding, etc., which can be realized in traditional technology, and will not be repeated here.
[0046] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present disclosure.
[0047] The above embodiments only express several implementation manners of the present disclosure, which are described in a more specific and detailed manner, but cannot be understood as limiting the scope of the utility model patent. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the utility model concept of the present disclosure, which all belong to the protection scope of the present disclosure.
Claims
1. A universal wax injection mold comprising a fixed mold (1), a movable mold (2) and a mold core (3), characterized in that: The bottom end of the mold core (3) is fixedly installed with a clamping plate (4), the fixed mold (1) is provided with two independent mold cavities, and an installation groove (5) for placing the clamping plate (4) is formed in the bottom wall of each mold cavity. A supporting block (6) is fixedly installed on the bottom wall of the installation groove (5), an elastic bellows (7) is sleeved on the outer side of the supporting block (6), and the bottom end of the elastic bellows (7) is fixedly connected with the bottom wall of the installation groove (5). A circular sponge (8) is fixedly sleeved on the outer side wall of the elastic bellows (7), and the sponge (8) is soaked with lubricating oil.
2. The universal wax injection mold of claim 1, wherein: The top end of the elastic bellows (7) is fixedly installed with a sealing plate (9).
3. The universal wax injection mold of claim 1, wherein: An annular groove is formed in the side wall of the clamping plate (4), an annular sealing ring (10) is embedded in the annular groove, the ratio of the diameter of the sealing ring (10) to the diameter of the annular groove is 1.2-1.5, and the sealing ring (10) is a hollow structure.
4. The universal wax injection mold of claim 3, wherein: The distance between the top wall of the installation groove (5) and the top wall of the clamping plate (4) is 1mm.
5. The universal wax injection mold of claim 1, wherein: A cavity (11) is formed in the fixed mold (1), a spraying hole (12) is formed in the top wall of the cavity (11), the spraying hole (12) is located directly below the sponge (8), and the fixed mold (1) is provided with a pressurizing mechanism for pressurizing the cavity (11).
6. The universal wax injection mold of claim 5, wherein: The pressurizing mechanism comprises a conduit (13) fixedly embedded in the fixed mold (1), the two ends of the conduit (13) are respectively communicated with the cavity (11) and the elastic bellows (7), one end of the conduit (13) located in the elastic bellows (7) is fixedly installed with an exhaust valve (15), and an air inlet valve (14) is fixedly embedded in the side wall of the elastic bellows (7).
7. The universal wax injection mold of claim 6, wherein: The exhaust valve (15) is located between the top wall and the bottom wall of the supporting block (6).