mold

Abstract

The utility model discloses a mould relates to mould technical field. Mould includes lower mould, upper die and positioning assembly, and the upper die and lower mould are closed up and down, and after injecting injection material to the cavity through pouring hole, waits for injection material solidification to form product. Because the upper die and lower mould are made of flexible material, and the mould is deformed when demoulding, so that convenient demoulding can improve demoulding efficiency. Because the positioning assembly is made of hard material, for example metal, plastic, glass and the like material, and the deformation of itself is very small, so when the first positioning column and the first positioning hole of the upper die are positioned and matched, the relative position between the upper die and the lower die can be effectively determined, and the demoulding of the product is also basically not affected. Even if long time uses, the positioning column also basically does not appear deformation, cracking and the like situation, thereby prolongs the service life of the mould, and the positioning precision is higher and is favorable to the production and manufacture of the product.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold. Background Technology

[0002] Silicone molds typically consist of an upper mold and a lower mold, with positioning pins required between them. However, after repeated disassembly and assembly of the mold, the positioning pins, which are also made of silicone, are prone to deformation and cracking, leading to reduced positioning accuracy and hindering product manufacturing. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a mold that can reduce the adverse effects of deformation and cracking of the positioning pins during prolonged use, improve positioning accuracy, and facilitate product manufacturing.

[0004] The mold according to an embodiment of the present utility model includes: a lower mold made of flexible material, with a cavity at the upper end; The upper mold, made of flexible material, is provided with a first positioning hole and a pouring hole. The upper mold is used to connect with the lower mold to cover the upper opening of the cavity. The pouring hole is connected to the cavity. A positioning component made of a rigid material includes a first positioning post. The positioning component is disposed inside the lower mold, and one end of the first positioning post protrudes through the upper end face of the lower mold. The first positioning post is used to position and cooperate with the first positioning hole.

[0005] The mold according to the embodiment of this utility model has at least the following beneficial effects: The upper and lower molds are closed, and injection molding material is injected into the cavity through the sprue. The product is then formed after the material solidifies. Since both the upper and lower molds are made of flexible materials, demolding is facilitated by deformation of the molds, improving demolding efficiency. Because the positioning components are made of rigid materials such as metal, plastic, or glass, their deformation is minimal. Therefore, when the first positioning pin and the first positioning hole of the upper mold are engaged, the relative position between the upper and lower molds is effectively determined, with minimal impact on product demolding. Even after prolonged use, the positioning pins are unlikely to deform or crack, thus extending the mold's lifespan, providing higher positioning accuracy, and facilitating product manufacturing.

[0006] According to some embodiments of the present invention, the cavity includes a main body groove and an ear groove. Multiple ear grooves are provided, each located on the edge of the main body groove and communicating with the main body groove. The positioning component includes multiple first positioning posts, the same number as the ear grooves, which are correspondingly inserted through the bottom wall of the ear groove.

[0007] According to some embodiments of the present invention, the mold further includes a collar, which is sleeved on the first positioning post and movably connected to the first positioning post, and the collar is located inside the cavity.

[0008] According to some embodiments of the present invention, the upper mold is provided with a second positioning hole, the positioning component further includes a plurality of second positioning posts, the second positioning posts are provided on both sides of the main body groove, the second positioning posts are located outside the cavity, and the second positioning posts and the second positioning hole are positioned and cooperated.

[0009] According to some embodiments of the present invention, the positioning component further includes an annular frame, one end of the first positioning post and one end of the second positioning post are respectively fixedly connected to the annular frame, the annular frame is disposed inside the lower mold, and the other end of the first positioning post and the other end of the second positioning post protrude through the upper end surface of the lower mold.

[0010] According to some embodiments of this utility model, the lower mold and the upper mold are made of silicone material, and the first positioning post is made of hard metal.

[0011] According to some embodiments of the present invention, the upper mold is provided with a protrusion on the side facing the lower mold. When the upper mold and the lower mold are closed, the protrusion is located in the cavity and is spaced apart from the wall of the cavity.

[0012] According to some embodiments of this utility model, the upper mold is provided with an exhaust vent hole, and when the upper mold and the lower mold are closed, the exhaust vent hole is connected to the cavity.

[0013] According to some embodiments of this utility model, the exhaust vent is provided in multiple manner and extends through the upper and lower end surfaces of the upper mold in the vertical direction.

[0014] According to some embodiments of the present invention, one side edge of the lower end face of the upper mold is provided with an inclined surface, and the inclined surface is inclined in a direction away from the lower mold. When the upper mold and the lower mold are closed, a handle groove is formed between the inclined surface and the upper end face of the lower mold.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a mold according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the upper and lower molds of a mold according to an embodiment of the present invention. Figure 3 This is an exploded view of a mold according to one embodiment of the present invention; Figure 4 This is a structural schematic diagram from another perspective of the separation of the upper and lower molds in one embodiment of the present invention; Figure 5 This is a schematic diagram of the positioning component according to an embodiment of the present invention.

[0017] Figure label: Mold 1000; Lower mold 100; cavity 110; main body groove 111; ear groove 112; Upper mold 200; first positioning hole 210; pouring hole 220; second positioning hole 230; vent hole 240; protrusion 250; inclined surface 260; handle groove 270; Positioning component 300; first positioning post 310; second positioning post 320; collar 330; ring frame 340; Product 2000. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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.

[0020] 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.

[0021] 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.

[0022] In related technologies, silicone molds typically use flexible materials to make the upper and lower molds, and silicone positioning pins are used for mold closing and positioning. However, the flexible positioning pins are prone to deformation or cracking after repeated disassembly and assembly, leading to a gradual decrease in mold closing accuracy and affecting product molding quality. For example, in the mass production of thin-walled shell products, the mold needs to be opened and closed frequently to remove the molded parts. Deformation of the positioning pins can directly cause product dimensional deviations, and may even prevent the mold from closing properly.

[0023] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a mold 1000 according to one embodiment of the present invention can be used to produce injection-molded products 2000, particularly shell products 2000. The mold 1000 of this embodiment includes an upper mold 200, a lower mold 100, and a positioning component 300. Both the upper mold 200 and the lower mold 100 are made of flexible materials, such as silicone or rubber, while the positioning component 300 can be made of rigid materials such as metal or glass. The upper end of the lower mold 100 has a cavity 110, and the upper mold 200 has a first positioning hole 210 and a pouring hole 220. The upper mold 200 is used to connect with the lower mold 100 to cover the upper opening of the cavity 110, and the pouring hole 220 communicates with the cavity 110. The positioning component 300 includes a first positioning post 310. The positioning component 300 is disposed inside the lower mold 100, and one end of the first positioning post 310 protrudes through the upper end face of the lower mold 100. The first positioning post 310 is used for positioning and engaging with the first positioning hole 210.

[0024] The lower mold 100 is the basic structure that supports the cavity 110. It can be injection molded from silicone material, and demolding is achieved through the elastic deformation of the material. The upper mold 200 is the mating structure that covers the cavity 110. Its first positioning hole 210 is used to form a positional constraint with the positioning post, and the gating hole 220 serves as the injection channel for the injection material. Both can be manufactured using an integral molding process. The positioning component 300 is a rigid positioning structure. The clearance between the first positioning post 310 and the positioning hole of the upper mold 200 is controlled within a reasonable range to ensure that the upper and lower molds 100 are precisely aligned when the mold is closed.

[0025] For example, during operation, the upper mold 200 and lower mold 100 are closed together, and the first positioning pin 310 is inserted into the positioning hole to achieve precise positioning. Molten material, such as PC material, is injected into the cavity 110 through the gating hole 220. After the material cools and solidifies, the upper and lower molds 100 are separated by the elastic deformation characteristics of the flexible material to complete demolding. During this process, the rigid positioning pin maintains its geometric stability, avoiding plastic deformation due to repeated stress, while the flexible mold 1000 body can achieve non-destructive demolding of complex structure products 2000 through local bending or stretching.

[0026] Using the above solution, since the positioning component 300 is made of a rigid material, its deformation is very small. Therefore, when the first positioning post 310 and the first positioning hole 210 of the upper mold 200 are positioned and engaged, the relative position between the upper mold 200 and the lower mold 100 can be effectively determined, while having virtually no impact on the demolding of the product 2000. Even after long-term use, the positioning post will hardly deform or crack, thereby extending the service life of the mold 1000, achieving higher positioning accuracy, and facilitating the production and manufacturing of the product 2000.

[0027] Reference Figure 2 and Figure 3 As shown in the embodiment of this utility model, the cavity 110 includes a main body groove 111 and an ear groove 112. The main body groove 111 forms the main body of the product 2000, and the ear groove 112 forms the ear of the product 2000. The product 2000 is square shell-shaped. Multiple ear grooves 112 are provided, each located along the edge of the main body groove 111 and communicating with it. For example, two ear grooves 112 are provided on each of the left and right sides of the main body groove 111, and the two ear grooves 112 on either side are spaced apart along the front-back direction. The positioning assembly 300 includes multiple first positioning posts 310, the same number as the ear grooves 112. The multiple first positioning posts 310 are correspondingly inserted through the bottom wall of the ear groove 112. The first positioning posts 310 form the ear through-holes of the product 2000 and also serve to determine the relative positions of the upper mold 200 and the lower mold 100.

[0028] The main body groove 111 refers to the groove structure set in the flexible lower mold 100, used to form the main structure of the square shell-shaped product 2000. The ear groove 112 refers to the extended grooves distributed along the edge of the main body groove 111, used to form the ear structure on the side of the product 2000. The ear groove 112 is located along the edge of the main body groove 111, meaning that the ear groove 112 is evenly distributed along the edge of the main body groove 111, which can be achieved by symmetrical arrangement to ensure that the ear structure is evenly distributed around the main body of the product 2000. The first positioning post 310 is inserted through the bottom wall of the ear groove 112, meaning that the top of the positioning post protrudes through the bottom of the ear groove 112, and during injection molding, the ear through hole is formed by the cooperation between the post and the bottom of the ear groove 112.

[0029] For example, when the upper mold 200 and the lower mold 100 are closed, after the molten material fills the cavity 110 during the injection molding process, ear-shaped through holes are formed around the first locating post 310. Since each ear groove 112 corresponds to an independent first locating post 310, the forming position of the ear-shaped through holes perfectly matches the distribution of the ear grooves 112. During the demolding process, the lower mold 100 and the upper mold 200, made of flexible material, can be separated by deformation, while the rigid locating posts maintain their shape stability, preventing the ear-shaped through holes from shifting position due to the deformation of the mold 1000.

[0030] This embodiment employs multiple first positioning posts 310 made of rigid material, which are independently embedded in the bottom of the ear groove 112. This structure ensures positioning accuracy while avoiding the impact of material deformation on the forming of the ear through-hole. The one-to-one correspondence between the ear groove 112 and the positioning posts further ensures the consistency of the forming of multiple ear structures, avoids cumulative errors caused by step-by-step processing, and extends the service life of the mold 1000.

[0031] Reference Figure 2 and Figure 3 As shown in the embodiment of this utility model, the mold 1000 further includes a collar 330, which is sleeved on the first positioning post 310 and movably connected to the first positioning post 310. The collar 330 is located inside the cavity 110 and inside the through hole of the ear of the product 2000, which facilitates the demolding of the ear of the product 2000. After the product 2000 is formed, the collar 330 can be constructed as part of the product 2000, or the collar 330 can be separated from the product 2000 and reused.

[0032] The collar 330 refers to the annular structure surrounding the first positioning post 310, which can be made of stainless steel, plastic, or silicone. The inner diameter of the collar 330 is slightly larger than the outer diameter of the first positioning post 310 to achieve a movable connection. This structure reduces direct friction between the ear of product 2000 and the positioning post during demolding. The movable connection means that a movable gap is maintained between the collar 330 and the first positioning post 310, which can be achieved using a clearance fit or a sliding pair structure, allowing the collar 330 to move or rotate along the axial direction of the positioning post. This design facilitates the collar 330 to detach from the positioning post synchronously with the ear of product 2000 during demolding. The collar 330 is embedded in the through-hole forming area corresponding to the ear groove 112, directly participating in the forming of the ear structure of product 2000.

[0033] For example, after the injection molding material is injected into the cavity 110, the collar 330 is encased within the injection molding layer corresponding to the ear groove 112. After the product 2000 solidifies, the collar 330 forms a contact interface with the inner wall of the ear through hole. During demolding, the ear area expands outward due to the deformation of the flexible upper mold 200 and lower mold 100, at which time the collar 330 can simultaneously detach from the first positioning post 310 along with the ear of the product 2000. If the collar 330 is tightly bonded to the product 2000, it can be retained in the ear through hole as a bushing. If there is a gap between the collar 330 and the product 2000, it can be pulled out with a tool for reuse, and a suitable arrangement method can be selected according to the actual situation.

[0034] In this embodiment, the collar 330 isolates the positioning post from the injection molding material. During demolding, the relative movement of the collar 330 and the positioning post avoids rigid pulling of the rigid positioning post on the flexible mold 1000, while also reducing wear on the molding surface of the ear through hole. The detachable design of the collar 330 allows it to be retained as a functional component of product 2000 or recycled and reused, reducing material waste. The cooperation between the rigid collar 330 and the flexible mold 1000 ensures positioning accuracy while extending the service life of the mold 1000.

[0035] Reference Figure 2 , Figure 3 and Figure 4 As shown in the embodiment of this utility model, the upper mold 200 is provided with a second positioning hole 230, and the positioning component 300 also includes a plurality of second positioning posts 320. The two sides of the main body groove 111 are provided with second positioning posts 320. The second positioning posts 320 are located outside the cavity 110. The second positioning posts 320 and the second positioning hole 230 are positioned and cooperated. The second positioning posts 320 are used to determine the relative position between the upper mold 200 and the lower mold 100, thereby improving the closing accuracy.

[0036] The second positioning hole 230 refers to a hole structure set in the upper mold 200, which can be implemented using a cylindrical hole structure. It forms a clearance fit or transition fit with the second positioning post 320 to limit the relative displacement of the upper mold 200 and the lower mold 100 in the horizontal direction. The second positioning post 320 refers to a columnar structure made of rigid material, which can be made of metal or high-strength plastic. It is fixed inside the lower mold 100 and partially protrudes from the upper end face of the lower mold 100 to insert into the second positioning hole 230 to limit the offset of the upper mold 200. The second positioning posts 320 on both sides of the main body groove 111 means that the second positioning posts 320 are distributed on the left and right sides or the front and rear sides of the main body groove 111. They can be implemented in a symmetrical arrangement to form additional positioning constraints in the area of ​​the main body groove 111 and prevent the upper mold 200 and the lower mold 100 from being misaligned in the area of ​​the main body groove 111.

[0037] When the upper mold 200 and the lower mold 100 are closed, the second positioning post 320 is inserted into the second positioning hole 230. Through the cooperation of the rigid material positioning post and the positioning hole, additional positioning points are formed on both sides of the main body groove 111. Since the second positioning post 320 is located outside the cavity 110, it will not interfere with the filling of the injection molding material in the cavity 110. At the same time, it can work together with the first positioning post 310 to form multi-directional positioning constraints. For example, when the main body groove 111 is used to mold the main body of the product 2000, the second positioning post 320 can limit the displacement of the upper mold 200 relative to the lower mold 100 in the length direction of the main body groove 111, thereby ensuring the dimensional accuracy of the main body of the product 2000.

[0038] Reference Figure 5 As shown in the embodiment of this utility model, the positioning component 300 further includes an annular frame 340. One end of the first positioning post 310 and one end of the second positioning post 320 are respectively fixedly connected to the annular frame 340. The annular frame 340 is disposed inside the lower mold 100. The other end of the first positioning post 310 and the other end of the second positioning post 320 pass through the upper surface of the lower mold 100.

[0039] The annular frame 340 is a support structure used to connect the first positioning post 310 and the second positioning post 320. It can be made of metal and the positioning posts are connected to the frame by welding or bolting. The annular frame 340 forms a rigid skeleton inside the mold 1000, reducing the displacement of the positioning posts under stress. The annular frame 340 improves the reliability and stability of the first positioning post 310 and the second positioning post 320, and facilitates the integrated injection molding of the positioning component 300 and the lower mold 100, simplifying assembly. Integrated injection molding means that the annular frame 340 is pre-placed in the molding die 1000 of the lower mold 100, and the flexible material is wrapped around the frame through injection molding, achieving integrated manufacturing of the positioning component 300 and the lower mold 100, avoiding subsequent manual assembly steps.

[0040] The annular frame 340 serves as the mounting base for the first positioning post 310 and the second positioning post 320. During injection molding, it integrates with the flexible material of the lower mold 100 to form an integral structure. The bottom ends of the first positioning post 310 and the second positioning post 320 are fixed to the frame, while their top ends protrude from the surface of the lower mold 100 and mate with the positioning holes of the upper mold 200. The annular design of the frame can disperse the shrinkage stress generated during the solidification of the injection molding material, preventing the positioning posts from bending or tilting. Simultaneously, the integrated molding process of the frame and the lower mold 100 eliminates the need for separate installation of the positioning posts, reducing assembly errors and solving the problem of decreased positioning accuracy due to lack of support. The rigid frame maintains the stable posture of the positioning posts, while the integrated molding process reduces manual assembly steps, improving the production efficiency and service life of the mold 1000.

[0041] In this embodiment of the invention, the lower mold 100 and the upper mold 200 are made of silicone material, and the first positioning post 310 is made of hard metal. Silicone material refers to a flexible and elastic polymer, whose flexibility allows the mold 1000 to separate the product 2000 through deformation during demolding. Hard metal refers to a metal material with high rigidity and low deformation, which can be made of stainless steel, aluminum alloy, or titanium alloy. Its rigidity ensures that the positioning post maintains shape stability during repeated use.

[0042] The lower mold 100 and upper mold 200 are injection molded from silicone material. The cavity 110 structure can elastically deform under external force, facilitating demolding of the product 2000. The first positioning post 310 is embedded inside the lower mold 100. Its hard metal material withstands mechanical stress without plastic deformation during the opening and closing of the mold 1000, thereby maintaining the positioning accuracy between the upper mold 200 and the lower mold 100. During the injection molding process, the flexibility of the silicone mold 1000 and the rigidity of the metal positioning post complement each other, preventing demolding damage to the product 2000 and ensuring the consistency of the mold closing position.

[0043] This embodiment introduces hard metal positioning pillars, which, while retaining the demolding advantages of the silicone mold 1000, eliminates the problem of decreased accuracy caused by material fatigue in the positioning structure. Furthermore, the wear-resistant properties of the metal material extend the service life of the mold 1000, while maintaining the rapid demolding capability of the silicone mold 1000, thereby improving the molding quality and production efficiency of the product 2000.

[0044] Reference Figure 3 and Figure 4As shown in the embodiment of this utility model, the upper mold 200 is provided with a protrusion 250 on the side facing the lower mold 100. When the upper mold 200 and the lower mold 100 are closed, the protrusion 250 is located in the cavity 110 and is spaced apart from the wall of the cavity 110. The injection molding material is poured between the wall of the cavity 110 and the outer wall of the protrusion 250. The protrusion 250 is used to form the inner cavity of the product 2000.

[0045] The protrusion 250 refers to a partial extension structure located on the lower end face of the upper mold 200. It can be made of a flexible material integrally molded with the upper mold 200, such as silicone. An injection material filling space is formed between the outer wall of the protrusion 250 and the wall of the cavity 110. The wall thickness of the inner cavity of the product 2000 can be adjusted by controlling the distance between them. The spaced-out setting refers to maintaining a uniform gap between the outer wall of the protrusion 250 and the wall of the cavity 110. This gap is used to accommodate the injection material, which, after solidification, forms the inner cavity structure of the product 2000 that encloses the outer wall of the protrusion 250.

[0046] For example, when the upper mold 200 and the lower mold 100 are closed, the protrusion 250 extends into the cavity 110 and maintains a predetermined distance from the wall of the cavity 110. After the injection material is injected into the gap through the gating hole 220, it wraps around the outer wall of the protrusion 250 during the solidification process to form the inner cavity of the product 2000. During the demolding process, since the upper mold 200 and the lower mold 100 are made of flexible materials, the protrusion 250 can be elastically deformed by external force, thereby detaching from the inner cavity of the product 2000 and avoiding demolding difficulties or damage to the product 2000 caused by rigid structures.

[0047] Through the above technical solution, this embodiment can directly mold a product 2000 with an internal cavity structure through a single injection molding, reducing the number of mold components and assembly steps, and lowering the risk of product 2000 defects caused by core mold displacement. The flexible protrusion 250 can quickly separate from the inner cavity of the product 2000 through elastic deformation during demolding, significantly improving demolding efficiency and extending the service life of the mold 1000.

[0048] Reference Figure 1 As shown in the embodiment of this utility model, the upper mold 200 is provided with venting holes 240. When the upper mold 200 and the lower mold 100 are closed, the venting holes 240 are connected to the cavity 110. Multiple venting holes 240 are provided and penetrate the upper and lower surfaces of the upper mold 200 in the vertical direction. The venting holes 240 refer to through-hole structures penetrating the upper mold 200, which can be implemented using cylindrical or conical channels, and are used to discharge gas from the cavity 110 during the injection molding process. Multiple venting holes 240 penetrate the upper and lower surfaces of the upper mold 200 in the vertical direction and can be evenly distributed around the cavity 110 to ensure that gas can be discharged upwards from the bottom of the cavity 110.

[0049] For example, when the injection material is injected into the cavity 110 through the gating hole 220, the air inside the cavity 110 and the volatile gases generated during the injection process will be discharged outward through the venting hole 240. Since the venting hole 240 extends vertically through the upper mold 200, the gas can directly escape upward from the bottom of the cavity 110 through the hole, preventing gas stagnation and the formation of bubbles or incomplete filling. For instance, when injection molding high-viscosity materials, multiple venting holes 240 can simultaneously discharge gas from different areas, ensuring that the material uniformly fills the cavity 110.

[0050] Through the above technical solution, this embodiment can effectively solve the problem of air bubbles or incomplete filling inside the product 2000 caused by gas retention during the injection molding process, improve the yield and surface quality of the molded product 2000, and simplify the structural design of the mold 1000, reducing the risk of injection molding failure caused by poor venting.

[0051] Reference Figure 1 As shown in the embodiment of this utility model, a slope 260 is provided on one side edge of the lower end face of the upper mold 200. The slope 260 is inclined in a direction away from the lower mold 100. When the upper mold 200 and the lower mold 100 are closed, a handle groove 270 is formed between the slope 260 and the upper end face of the lower mold 100, which facilitates opening the upper mold 200.

[0052] The inclined surface 260 refers to the inclined plane structure formed at the edge of the upper mold 200, which can be achieved through cutting or injection molding processes, and its inclination angle can range from 5 to 45 degrees. The hand groove 270 refers to the recessed space formed by the inclined surface 260 and the upper end face of the lower mold 100, which can be constructed through the gap between the inclined surface 260 and the plane. The inclined surface 260 and the plane of the lower mold 100 form a non-perpendicular contact surface, creating a gap for the insertion of fingers or tools when the mold 1000 is closed.

[0053] When the upper mold 200 and lower mold 100 need to be separated after injection molding, the operator can insert their fingers or a pry bar into the handle groove 270 and apply an upward force using the lever fulcrum provided by the inclined surface 260. Since the inclined direction of the inclined surface 260 forms an angle with the direction of the demolding force, the applied lateral force can be decomposed into a component force perpendicular to the separation direction, thereby reducing the force required for mold opening. At the same time, the open space formed by the handle groove 270 avoids the tight fit phenomenon caused by traditional planar contact.

[0054] Through the above technical solution, this embodiment effectively solves the technical problem of difficult mold opening of silicone mold 1000. Through the hand groove 270 structure formed by the inclined surface 260 and the plane, the operator can quickly locate the force application point and achieve labor-saving separation. While ensuring the positioning accuracy of mold 1000, it significantly improves the convenience of operation and demolding efficiency, and reduces the mechanical damage to flexible materials caused by repeated opening and closing.

[0055] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mold, characterized in that, include: The lower mold is made of flexible material and has a cavity at the upper end; The upper mold, made of flexible material, is provided with a first positioning hole and a pouring hole. The upper mold is used to connect with the lower mold to cover the upper opening of the cavity. The pouring hole is connected to the cavity. A positioning component made of a rigid material includes a first positioning post. The positioning component is disposed inside the lower mold, and one end of the first positioning post protrudes through the upper end face of the lower mold. The first positioning post is used to position and cooperate with the first positioning hole.

2. The mold according to claim 1, characterized in that: The cavity includes a main body groove and an ear groove. Multiple ear grooves are provided, each located on the edge of the main body groove and communicating with it. The positioning component includes multiple first positioning posts, the same number as the ear grooves, which are correspondingly inserted through the bottom wall of the ear groove.

3. The mold according to claim 2, characterized in that: The mold also includes a collar, which is sleeved on the first positioning post and movably connected to the first positioning post, and the collar is located inside the cavity.

4. The mold according to claim 2, characterized in that: The upper mold is provided with a second positioning hole, and the positioning component also includes a plurality of second positioning posts. The second positioning posts are provided on both sides of the main body groove. The second positioning posts are located outside the cavity, and the second positioning posts and the second positioning hole are positioned and engaged.

5. The mold according to claim 4, characterized in that: The positioning component further includes an annular frame, one end of the first positioning post and one end of the second positioning post are respectively fixedly connected to the annular frame, the annular frame is disposed inside the lower mold, and the other end of the first positioning post and the other end of the second positioning post protrude through the upper surface of the lower mold.

6. The mold according to claim 1, characterized in that: The lower mold and the upper mold are made of silicone material, and the first positioning post is made of hard metal.

7. The mold according to claim 1, characterized in that: The upper mold has a protrusion on the side facing the lower mold. When the upper mold and the lower mold are closed, the protrusion is located inside the cavity and is spaced apart from the wall of the cavity.

8. The mold according to claim 1, characterized in that: The upper mold is provided with an exhaust vent. When the upper mold and the lower mold are closed, the exhaust vent is connected to the cavity.

9. The mold according to claim 8, characterized in that: The exhaust vents are provided in multiple manner and extend through the upper and lower surfaces of the upper mold in the vertical direction.

10. The mold according to claim 1, characterized in that: The upper mold has a beveled edge on one side of its lower end face. The beveled edge is inclined away from the lower mold. When the upper mold and the lower mold are closed, a handle groove is formed between the beveled edge and the upper end face of the lower mold.

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