Novel high-pressure pouring mold sealing structure

Abstract

The utility model relates to a novel sealing structure of a high-pressure pouring mold. The novel sealing structure comprises a lower mold plate and a positioning notch, a positioning notch is formed in the surface of the lower die plate in a milling mode, a sealing piece is embedded in the positioning notch, a plurality of cavities are reserved in the sealing piece, a clamping notch is formed in the inner edge of the positioning notch in a milling mode, a clamping protrusion is arranged on the periphery of the sealing piece, the clamping protrusion is clamped in the clamping notch, and the sealing piece is clamped in the clamping notch. The middle of the lower die plate is divided into a pouring part through the positioning notch, and the interior of the pouring part is used for pouring. According to the novel high-pressure pouring mold sealing structure, through the arrangement of the first containing groove, the second containing groove and the conveying groove, the surface of a pouring mold can be fully attached to a sealing piece after the pouring mold is placed, and therefore the sealing effect of the pouring mold is improved; meanwhile, due to the limiting effect of the U-shaped notch on the pouring mold, deformation of the outer mold is reduced, and the precision of the size of coil pouring is further guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of transformer casting technology, specifically a novel high-voltage casting mold sealing structure. Background Technology

[0002] When casting transformer coils, the mold shell is placed on the lower mold plate. Traditional mold shells are relatively heavy, so a flexible pad is usually placed on the lower mold plate.

[0003] Due to the influence of the mold material, the mold needs to be adjusted when placed on the flexible pad, resulting in multiple indentations on the surface of the flexible pad, which affects the service life of the flexible pad and directly affects the cost of the material.

[0004] Meanwhile, because it is difficult to clamp the middle part of the straight section of the outer mold of the traditional mold, during the coil casting process, when the resin is poured into the mold, the middle part of the straight section will be slightly arc-shaped due to pressure and other reasons, and an arc-shaped indentation will be formed on the bottom sealing gasket. This will reduce the air distance between the phases of the transformer and affect the safety distance between the phases. The only solution is to appropriately increase the phase distance of the iron core during the design, which increases the material cost of the transformer.

[0005] In view of this, a novel sealing structure for high-pressure casting molds is proposed. Utility Model Content

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0007] Given the following technical problems in the existing technology: the traditional mold shell is relatively heavy, and a flexible pad is usually set on the lower mold plate. Due to the influence of the mold material, the position of the mold on the flexible pad needs to be adjusted, resulting in multiple indentations on the surface of the flexible pad, which affects the service life of the flexible pad and directly affects the cost of materials.

[0008] Meanwhile, because it is difficult to clamp the middle part of the straight section of the outer mold of the traditional mold, during the coil casting process, when the resin is poured into the mold, the middle part of the straight section will be slightly arc-shaped due to pressure and other reasons. This will form an arc-shaped indentation on the bottom sealing gasket, which will reduce the air distance between the phases of the transformer and affect the safety distance between the phases. The only solution is to consider appropriately increasing the phase distance of the iron core during the design, which increases the material cost of the transformer.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel high-pressure casting mold sealing structure, including a lower template and a positioning groove;

[0010] The positioning slot is milled on the surface of the lower template. A sealing element is embedded in the positioning slot. The sealing element has multiple cavities. A locking slot is milled on the inner edge of the positioning slot. A locking protrusion is arranged on the outer periphery of the sealing element. The locking protrusion is locked in the locking slot. The positioning slot divides the middle part of the lower template into a pouring part, which is used for pouring.

[0011] As a preferred technical solution for a novel high-pressure casting mold sealing structure, the cross-sectional shape of the positioning groove is "U"-shaped, and the cross-sectional shape of the sealing element is also "U"-shaped. The shape of the positioning groove is used to ensure the accurate installation of the sealing element, and the shape of the sealing element is used to ensure the bearing capacity of the mold plate.

[0012] As a preferred technical solution for a new type of high-pressure casting mold sealing structure, the upper end face of the snap-fit ​​protrusion is horizontal and the edge contour of the snap-fit ​​protrusion is inclined, so that the sealing element will not obstruct the positioning groove when it is inserted into the positioning groove, and can play a certain anti-pull effect after the sealing element is inserted.

[0013] As a preferred technical solution for a novel high-pressure casting mold sealing structure, the sealing element includes a support pad and a sealing pad. The sealing pad is distributed along the inner edge of the support pad, and the snap-fit ​​protrusion is connected to the outer edge of the support pad. The support pad is a load-bearing component to ensure stable docking between the sealing element and the inner edge of the positioning groove, and the sealing pad is a sealing component to ensure stable contact between the mold and the sealing element.

[0014] As a preferred technical solution for a novel high-pressure casting mold sealing structure, the cavity includes a receiving groove one and a receiving groove two. The receiving groove one is reserved at the bottom opposite face of the support pad and the sealing pad, and the receiving groove two is reserved at the side opposite face of the support pad and the sealing pad.

[0015] As a preferred technical solution for a new type of high-pressure casting mold sealing structure, a transmission groove is provided between the second receiving groove and the first receiving groove. When the side plate of the mold is pressed into the sealing gasket, the bottom end of the side plate of the mold will first be squeezed with the position of the first receiving groove. At this time, the gas in the first receiving groove will enter the second receiving groove through the transmission groove.

[0016] The beneficial effects of this utility model are:

[0017] 1. The sealing structure of this new high-pressure casting mold, through the setting of storage groove one, storage groove two and transmission groove, enables the surface of the casting mold to fully fit with the sealing element after placement, thereby improving the sealing effect of the casting mold.

[0018] 2. The sealing structure of this new high-pressure casting mold, through the elasticity of the sealing gasket itself, can provide a buffering effect when the casting mold is placed.

[0019] 3. The sealing structure of this new high-pressure casting mold, through the setting of positioning groove, locking groove and locking protrusion, makes the sealing component more stable and accurate during installation.

[0020] 4. The sealing structure of this new high-pressure casting mold, through the positioning slot and the groove of the sealing element, plays the role of limiting the end of the straight section of the outer mold, making the dimensions of the straight section of the coil casting more accurate.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a partial cross-sectional view of the positioning groove of this utility model.

[0025] Figure 3 This is a schematic diagram of the sealing element of this utility model.

[0026] Figure label:

[0027] 100. Lower template; 101. Casting section; 200. Positioning groove; 201. Locking groove; 300. Seal; 301. Support pad; 302. Sealing pad; 303. Snap-fit ​​protrusion; 304. Storage groove one; 305. Storage groove two; 306. Transfer groove. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0031] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1, referring to Figure 1 and 2 A novel high-pressure casting mold sealing structure includes a lower template 100 and a positioning groove 200. The positioning groove 200 is milled on the surface of the lower template 100, and a sealing element 300 is embedded in the positioning groove 200. The sealing element 300 has multiple cavities. A locking groove 201 is milled on the inner edge of the positioning groove 200, and a locking protrusion 303 is arranged on the outer periphery of the sealing element 300. The locking protrusion 303 is locked in the locking groove 201. The positioning groove 200 divides the middle part of the lower template 100 into a casting part 101, which is used for casting. The upper end face of the locking protrusion 303 is horizontal, and the edge contour of the locking protrusion 303 is inclined, so that the sealing element 300 will not obstruct when it is inserted into the positioning groove 200, and can play a certain anti-pull effect after the sealing element 300 is inserted.

[0033] Example 2, refer to Figure 3The positioning groove 200 and the sealing element 300 both have a U-shaped cross-section. The shape of the positioning groove 200 ensures the precise installation of the sealing element 300, while the shape of the sealing element 300 ensures the support of the mold plate. The sealing element 300 includes a support pad 301 and a sealing pad 302. The sealing pad 302 is distributed along the inner edge of the support pad 301, and the snap-fit ​​protrusion 303 connects to the outer edge of the support pad 301. The support pad 301 serves as the load-bearing component, ensuring stable docking between the sealing element 300 and the inner edge of the positioning groove 200. The sealing pad 302 serves as the sealing component, ensuring stable contact between the mold and the sealing element 300. The cavity includes a receiving groove 1 304 and a receiving groove 2 305. The receiving groove 1 304 is located at the bottom opposite surfaces of the support pad 301 and the sealing pad 302, and the receiving groove 2 305 is located at the side opposite surfaces of the support pad 301 and the sealing pad 302. A transmission groove 306 is provided between the second storage groove 305 and the first storage groove 304. When the side plate of the mold is pressed into the sealing gasket 302, the bottom end of the side plate of the mold will first be squeezed against the position of the first storage groove 304. At this time, the gas in the first storage groove 304 will enter the second storage groove 305 through the transmission groove 306. The sealing gasket 302 itself is basically elastic. At this time, the second storage groove 305 causes the opening position of the sealing gasket 302 to bulge slightly, so that the side of the sealing gasket 302 can fit with the surface of the mold side plate, further improving the sealing effect.

[0034] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such a development process can be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development process will be a routine task in design, manufacturing, and production, requiring minimal experimentation.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A novel sealing structure for high-pressure casting molds, characterized in that: Includes a lower template (100) and a positioning slot (200); The positioning slot (200) is milled on the surface of the lower template (100). A sealing element (300) is embedded in the positioning slot (200). Multiple cavities are reserved in the sealing element (300). A locking slot (201) is milled on the inner edge of the positioning slot (200). A locking protrusion (303) is arranged on the outer periphery of the sealing element (300). The locking protrusion (303) is locked in the locking slot (201). The positioning slot (200) divides the middle part of the lower template (100) into a casting part (101).

2. The novel high-pressure casting mold sealing structure according to claim 1, characterized in that: The positioning slot (200) has a U-shaped cross-section, and the sealing element (300) has a U-shaped cross-section.

3. The novel high-pressure casting mold sealing structure according to claim 1, characterized in that: The upper surface of the snap-fit ​​protrusion (303) is horizontal, and the edge contour of the snap-fit ​​protrusion (303) is inclined.

4. The novel high-pressure casting mold sealing structure according to claim 1, characterized in that: The sealing element (300) includes a support pad (301) and a sealing pad (302), the sealing pad (302) being distributed along the inner edge of the support pad (301), and the snap-fit ​​protrusion (303) being connected to the outer edge of the support pad (301).

5. The novel high-pressure casting mold sealing structure according to claim 1, characterized in that: The cavity includes a first storage slot (304) and a second storage slot (305). The first storage slot (304) is reserved at the bottom opposite face of the support pad (301) and the sealing pad (302), and the second storage slot (305) is reserved at the side opposite face of the support pad (301) and the sealing pad (302).

6. The novel high-pressure casting mold sealing structure according to claim 5, characterized in that: A transmission channel (306) is provided between the second storage channel (305) and the first storage channel (304).

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