Exhaust structure and composite insulator mold

Abstract

The utility model discloses an exhaust structure and a composite insulator mold. The exhaust structure comprises an exhaust hole and an exhaust groove, the exhaust hole is formed in the upper side or the lower side of the cavity, the exhaust hole extends in the axial direction of the cavity and penetrates through the two end faces of the mold, the exhaust groove is formed in the edge of the cavity, one end of the exhaust groove is communicated with the cavity, and the other end of the exhaust groove is communicated with the exhaust hole. The composite insulator mold is provided with a cavity in a hollow mode, the cavity is provided with a plurality of umbrella cavities, an exhaust structure is arranged in the composite insulator mold, an exhaust groove of the exhaust structure is formed in the edge of at least one umbrella cavity and communicated with the umbrella cavities, and exhaust holes extend in the arrangement direction of the umbrella cavities. According to the utility model, the generation of bubble defects can be reduced, and the qualified rate of the prepared composite insulator product is higher.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to exhaust structure and composite insulator molds. Background Technology

[0002] Due to factors such as the decomposition of unstable substances in the high-temperature rubber compound producing gases and residual air in the mold cavity, air bubble defects are prone to occur during the manufacturing process of insulators. This is especially true for composite insulators with larger umbrella sizes, where existing molds often have inadequate venting structures, making it difficult for gases to escape from the cavity. Air bubble defects frequently appear at the edges of the umbrella, resulting in uneven edges and affecting the product's aesthetics. Furthermore, because air bubble defects disrupt the product's structural integrity, they may affect its strength and durability, making the product more susceptible to damage and shortening its lifespan during subsequent use. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an exhaust structure and a composite insulator mold.

[0004] The solution to the technical problem of this utility model is:

[0005] In a first aspect, a venting structure is proposed for use in a mold with a cavity. The venting structure includes a venting hole and a venting groove. The venting hole is located on the upper or lower side of the cavity and extends axially along the cavity, penetrating both end faces of the mold. The venting groove is located at the edge of the cavity, with one end communicating with the cavity and the other end communicating with the venting hole.

[0006] This invention has at least the following beneficial effects: air bubbles located in the cavity can overflow the cavity through the venting groove and flow out of the mold through the venting hole, solving the problem of insufficient venting in existing molds, thereby solving the problem of air bubble defects on the edges of products produced by existing molds, and ultimately obtaining a higher product qualification rate.

[0007] As a further improvement to the above technical solution, the exhaust groove extends in the vertical direction.

[0008] As a further improvement to the above technical solution, the exhaust structure further includes a connecting groove, which is disposed between the cavity and the exhaust groove. The connecting groove extends in the vertical direction and is used to connect the exhaust groove and the cavity. The depth of the connecting groove gradually decreases from the cavity to the exhaust groove.

[0009] As a further improvement to the above technical solution, the width of the exhaust groove is equal to the diameter of the exhaust hole.

[0010] As a further improvement to the above technical solution, the depth of the exhaust groove is less than or equal to 1 mm.

[0011] Secondly, a composite insulator mold is proposed. The composite insulator mold is hollow and has a cavity. The cavity has multiple umbrella cavities. The composite insulator mold has an exhaust structure as described in any of the above technical solutions. The exhaust groove of the exhaust structure is located at the edge of at least one of the umbrella cavities and communicates with the umbrella cavity. The exhaust hole extends along the arrangement direction of the umbrella cavities.

[0012] Because the composite insulator mold is equipped with the venting structure mentioned in the first aspect, the gas in the cavity can be effectively discharged, avoiding the generation of bubble defects. Composite insulators produced by this composite insulator mold have fewer edge defects and a high pass rate.

[0013] As a further improvement to the above technical solution, multiple exhaust structures are provided on the same umbrella cavity, and the multiple exhaust structures are symmetrically arranged on the upper and lower sides of the umbrella cavity.

[0014] As a further improvement to the above technical solution, the exhaust structure is located at the edge of the plurality of umbrella cavities.

[0015] As a further improvement to the above technical solution, the composite insulator mold is provided with multiple gates, the gates are connected to the cavity, and the venting structure is located at the edge of the umbrella cavity corresponding to the center of the line connecting two adjacent gates.

[0016] As a further improvement to the above technical solution, the ratio of the diameter of the umbrella cavity to the width of the exhaust groove is 25:1. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the exhaust structure according to an embodiment of the present utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view along the AA direction;

[0020] Figure 3 yes Figure 2 A magnified structural diagram of part B in the middle section;

[0021] Figure 4This is a schematic diagram of the overall structure of the composite insulator mold according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the arrangement of the venting structure in the composite insulator mold of this utility model embodiment.

[0023] Reference numerals: 100, venting structure; 110, venting hole; 120, venting groove; 130, connecting groove; 200, umbrella cavity; 300, upper mold; 400, lower mold; 500, module; 600, gate. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. The various technical features of this utility model can be combined interactively without contradicting each other.

[0029] Firstly, referring to Figure 1 , Figure 2 and Figure 3 This utility model embodiment proposes a venting structure 100, which is applied in a mold. The mold has a cavity, and plastic products corresponding to the cavity shape, such as insulators, can be produced by pouring rubber into the cavity. Due to the venting structure 100, the products produced by the mold have fewer edge defects and a higher pass rate.

[0030] In this embodiment, the venting structure 100 includes a venting hole 110 and a venting groove 120. The venting hole 110 is disposed on the upper or lower side of the cavity and extends along the axial direction of the cavity, penetrating both ends of the mold. The venting groove 120 is disposed at the edge of the cavity, with one end of the venting groove 120 communicating with the cavity and the other end communicating with the venting hole 110.

[0031] During the casting process, the vent hole 110 is connected to the outside, and air bubbles can overflow from the cavity through the vent groove 120 and the vent hole 110, which solves the problem of insufficient venting in the existing mold, thereby solving the problem of defects on the edge of the products produced by the existing mold, and ultimately obtaining a higher product qualification rate.

[0032] It is understandable that some of the resin enters the venting groove 120 during casting, resulting in outward-protruding lumps on the edges of the finished product. After demolding, these lumps can be simply peeled off to obtain a qualified product. It is also understandable that the formation and removal of these lumps will not affect the overall strength of the product.

[0033] In this embodiment, the exhaust groove 120 extends in the vertical direction and directly connects the exhaust hole 110 and the cavity through the vertical channel. This reduces the inflection points of the entire exhaust structure 100, achieves exhaust more effectively, reduces defects at the product edge, and is more conducive to the processing of the exhaust structure 100.

[0034] In some embodiments, the venting structure 100 further includes a connecting groove 130, which is disposed between the cavity and the venting groove 120 to connect the venting groove 120 and the cavity. The connecting groove 130 extends vertically, and its width is the same as that of the venting groove 120. The depth of the connecting groove 130 gradually decreases from the cavity towards the venting groove 120. This arrangement facilitates gas venting and subsequent product demolding, further reducing the generation of bubble defects and improving the product yield.

[0035] In some embodiments, the width of the exhaust groove 120 is equal to the diameter of the exhaust hole 110. This arrangement is more conducive to the processing of the exhaust groove 120 and the exhaust hole 110, and can achieve a better exhaust effect.

[0036] Furthermore, the depth of the venting groove 120 is less than or equal to 1 mm. It can be understood that the depth direction of the venting groove 120 is the axial direction of the venting hole 110. Designing the depth of the venting groove 120 to be less than or equal to 1 mm makes it easier to cut or tear off the venting groove 120 from the edge of the demolded product. Moreover, the processing marks from cutting or tearing are smaller, resulting in a more aesthetically pleasing product.

[0037] On the other hand, refer to Figure 4 and Figure 5 This utility model embodiment also proposes a composite insulator mold for manufacturing composite insulators. The composite insulator mold is provided with an venting structure 100 as proposed in any embodiment of the first aspect, which can meet the venting requirements during the casting process, reduce edge defects of the obtained composite insulator products, and improve the product qualification rate.

[0038] In this embodiment, the composite insulator mold is hollow and has a cavity. Specifically, the composite insulator mold includes an upper mold 300 and a lower mold 400, which together form the cavity. For the cavity used to produce the composite insulator product, multiple umbrella cavities 200 are provided, which can shape each umbrella of the composite insulator product. An exhaust structure 100 is provided on the outer periphery of the umbrella cavity 200, an exhaust groove 120 is provided at the edge of one or more umbrella cavities 200 and communicates with the umbrella cavity 200, and an exhaust hole 110 extends along the arrangement direction of the umbrella cavities 200.

[0039] In this embodiment, the upper mold 300 and the lower mold 400 are each composed of multiple modules 500. The multiple modules 500 are arranged in the front-back direction to form the upper mold 300, and the multiple modules 500 are arranged in the front-back direction to form the lower mold 400. The upper mold 300 is located above the lower mold 400. An umbrella cavity 200 is formed between two adjacent modules 500, and the venting groove 120 is provided on the side of the module 500 corresponding to the umbrella cavity 200 that needs to be vented. The venting hole 110 extends in the front-back direction and penetrates the front and rear end faces of the entire upper mold 300 or the entire front and rear end faces of the entire lower mold 400.

[0040] In this embodiment, multiple venting structures 100 are provided in the same umbrella cavity 200. These multiple venting structures 100 are symmetrically arranged on the upper and lower sides of the umbrella cavity 200, that is, symmetrically arranged on the upper mold 300 and the lower mold 400. This arrangement can ensure that both the upper mold 300 and the lower mold 400 can achieve good venting effect, reduce edge defects of the obtained products, and improve the product qualification rate.

[0041] In this embodiment, multiple venting structures 100 are provided on the upper mold 300 and the lower mold 400, respectively. The venting structures 100 on the upper mold 300 are symmetrically arranged with respect to the central axis of the umbrella cavity 200 in the vertical direction. This arrangement can evenly discharge air bubbles in the left and right positions of the umbrella cavity 200, further reducing edge defects in the obtained composite insulator product.

[0042] In this embodiment, six venting structures 100 are provided around the periphery of an umbrella cavity 200. The upper mold 300 is provided with three venting structures 100, and the lower mold 400 is provided with three venting structures 100. This arrangement can effectively discharge the gas in the cavity and reduce product defects.

[0043] In some embodiments, the composite insulator mold is provided with a plurality of gates 600, the gates 600 are interconnected with the cavity, and the venting structure 100 is provided at the edge of the umbrella cavity 200 corresponding to the center of the line connecting two adjacent gates 600.

[0044] It is understandable that insufficient venting occurs at the center of the line connecting the two gates 600, preventing air from being expelled in time when the material enters the mold cavity. This makes it more prone to air bubble defects compared to other locations. In this embodiment, the venting structure 100 is placed at this specific location, which can effectively solve this problem, further reduce the occurrence of defects, and improve the product qualification rate.

[0045] It is understandable that the exhaust groove 120 can be set on one side of the module 500 forming the umbrella cavity 200, which is more conducive to the manufacturing of the module 500 and reduces the number of modules 500 that need to be equipped with the exhaust groove 120.

[0046] For a composite insulator mold with exhaust structures 100 in multiple umbrella cavities 200, the exhaust structures 100 in different umbrella cavities 200 can be positioned in the same or different locations. In this embodiment, the exhaust structures 100 in different umbrella cavities 200 are positioned in the same location, which is more conducive to the standardized production of the module 500. Moreover, the exhaust holes 110 in the same position in different umbrella cavities 200 are interconnected, which can reduce the number of exhaust holes 110 in the entire upper mold 300 or lower mold 400.

[0047] It is understandable that composite insulator products with larger umbrella sizes are more prone to defects during the manufacturing process. The composite insulator mold of this embodiment can be used to manufacture composite insulator products with larger umbrella diameters. In this embodiment, the ratio of the diameter of the umbrella cavity 200 to the width of the exhaust groove 120 is 25:1.

[0048] After demolding, the size of the lumps formed on the outside of the composite insulator product is within the preset range, which can effectively vent the air while reducing the impact of the lumps formed by the venting groove 120 on the product, and makes it easier to tear off or cut off the lumps protruding from the outer periphery of the product.

[0049] In this embodiment, the umbrella cavity 200 has a diameter of 300 mm, the exhaust groove 120 has a width of 12 mm, and the exhaust hole 110 has a diameter of 12 mm.

[0050] Understandably, after casting and demolding, the vent hole 110 needs to be cleaned. A long tool can be inserted into the vent hole 110 to remove the excess material and prevent blockage. This will facilitate the production of composite insulator products in the next batch.

[0051] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An exhaust structure, characterized in that, The venting structure, which is applied to a mold with a cavity, includes a venting hole and a venting groove. The venting hole is located on the upper or lower side of the cavity and extends along the axial direction of the cavity, penetrating both ends of the mold. The venting groove is located on the edge of the cavity, with one end communicating with the cavity and the other end communicating with the venting hole.

2. The exhaust structure according to claim 1, characterized in that, The exhaust channel extends vertically.

3. The exhaust structure according to claim 2, characterized in that, The exhaust structure also includes a connecting groove, which is disposed between the cavity and the exhaust groove. The connecting groove extends in the vertical direction and is used to connect the exhaust groove and the cavity. The depth of the connecting groove gradually decreases from the cavity to the exhaust groove.

4. The exhaust structure according to claim 2, characterized in that, The width of the exhaust groove is equal to the diameter of the exhaust hole.

5. The exhaust structure according to claim 1, characterized in that, The depth of the exhaust groove is less than or equal to 1 mm.

6. A composite insulator mold, characterized in that, The composite insulator mold has a hollow cavity, which has multiple umbrella cavities. The composite insulator mold has an exhaust structure as described in any one of claims 1 to 5. The exhaust groove of the exhaust structure is located at the edge of at least one of the umbrella cavities and communicates with the umbrella cavity. The exhaust hole extends along the arrangement direction of the umbrella cavities.

7. The composite insulator mold according to claim 6, characterized in that, Multiple exhaust structures are provided on the same umbrella cavity, and the multiple exhaust structures are symmetrically arranged on the upper and lower sides of the umbrella cavity.

8. The composite insulator mold according to claim 6, characterized in that, The exhaust structure is located at the edge of the plurality of umbrella cavities.

9. The composite insulator mold according to claim 8, characterized in that, The composite insulator mold is provided with multiple gates, which are connected to the cavity. The venting structure is located at the edge of the umbrella cavity corresponding to the center of the line connecting two adjacent gates.

10. The composite insulator mold according to claim 6, characterized in that, The ratio of the diameter of the umbrella cavity to the width of the exhaust groove is 25:1.

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