Thermosetting material vacuumizing forming die

Abstract

The utility model discloses a thermosetting material vacuumizing forming die which comprises an upper die and a lower die, a die core is arranged in the middle of the lower die, a first matching portion matched with the upper portion of the die core in a sealing mode is arranged at the bottom of the upper die, and a second matching portion matched with the outer wall of the first matching portion is arranged on the lower die. The bottom of the mold core and the bottom of the lower mold are provided with bases which are connected in a sealed mode, the upper mold, the lower mold, the mold core and the bases are mutually enclosed to form a cavity, and the contact faces of the first matching part and the second matching part form a parting face connected with the side wall of the cavity. And the parting surface comprises a first vertical parting surface which is communicated with the highest point of the cavity and is vertically arranged. The utility model has the characteristics that the height difference between the parting surface and the cavity can be increased, materials are prevented from permeating into the parting surface to block a gas channel during vacuum pumping, and normal vacuum pumping is realized, so that the materials are fully filled, air holes are avoided, and the like.

Description

Technical Field

[0001] This utility model relates to a molding die, specifically a vacuum molding die for thermosetting materials. Background Technology

[0002] Injection molding is a process in which molten plastic is injected into a molding cavity and cooled to solidify, thus obtaining the desired part. Injection molding often uses thermoplastic or thermosetting materials. Thermosetting materials are composite materials that are clumped together and are not easily filled into the mold cavity during molding, which can lead to the formation of air holes. Therefore, vacuuming is required to ensure that the thermosetting material fully fills the mold cavity and avoids air holes. The components of thermosetting molds are usually sealed and firmly connected to facilitate vacuuming during molding. However, thermosetting molds also have upper and lower molds for mold closing and opening, and there is a parting surface between the upper and lower molds. Vacuuming is usually performed through gas channels between the parting surface.

[0003] However, thermosetting materials are overflowing materials. During vacuuming, thermosetting materials will seep into the parting surface, causing blockage of the gas channels and preventing the vacuuming process from proceeding normally. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum forming mold for thermosetting materials, which solves the problems of gas channels on the parting surface being easily blocked by materials during vacuuming in the existing technology.

[0005] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: a vacuum forming mold for thermosetting materials, including an upper mold and a lower mold, wherein a mold core is provided in the middle of the lower mold, a first mating part is provided at the bottom of the upper mold to seal and cooperate with the upper part of the mold core, a second mating part is provided on the lower mold to cooperate with the outer wall of the first mating part, and a base is provided at the bottom of the mold core and the lower mold to be sealed and connected. The upper mold, the lower mold, the mold core and the base are mutually enclosed to form a cavity. The side of the first mating part and the second mating part that contacts each other forms a parting surface that is connected to the side wall of the cavity. The parting surface includes a first vertical parting surface that is connected to the highest point of the cavity and is vertically arranged.

[0006] As a further preferred technical solution of this utility model, the parting surface includes a horizontal parting surface located above the first vertical parting surface and extending laterally outward.

[0007] As a further preferred technical solution of this utility model, an annular notch is provided on the inner wall of the lower mold at the connection between the first vertical parting surface and the horizontal parting surface.

[0008] As a further preferred technical solution of this utility model, the annular notch, together with the first vertical parting surface and the horizontal parting surface, forms an annular channel.

[0009] As a further preferred technical solution of this utility model, the end of the horizontal parting surface is provided with a vertically arranged second vertical parting surface, which is located above the first vertical parting surface.

[0010] As a further preferred technical solution of this utility model, a sealing ring for sealing the gap between the upper mold and the lower mold is provided on the second vertical parting surface.

[0011] Therefore, this utility model has the characteristics of increasing the height difference between the parting surface and the cavity, preventing material from seeping into the parting surface and blocking the gas channel during vacuuming, enabling normal vacuuming, ensuring full filling of material, and avoiding the generation of air holes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0014] like Figure 1As shown, a vacuum forming mold for thermosetting materials includes an upper mold 1 and a lower mold 2. A core 3 is located in the middle of the lower mold 2. The bottom of the upper mold 1 has a first mating part 11 that seals with the upper part of the core 3. The lower mold 2 has a second mating part 21 that mates with the outer wall of the first mating part 11. A base 4 is sealed to the bottom of the core 3 and the lower mold 2. The upper mold 1, controlled by external equipment, can automatically move up and down to achieve mold closing and opening with the lower mold 2. The lower mold 2, core 3, and base 4 are mutually sealed to prevent material leakage and ensure a stable vacuum environment. The core 3 is located in the middle of the lower mold 2, and its top seals again after closing with the upper mold 1. The upper mold 1, lower mold 2, core 3, and base 4 enclose each other to form a cavity 5, thereby enhancing the airtightness of the cavity 5. The surface of the first mating part 11 and the second mating part 21 that contacts the cavity forms a seal. The parting surface 51 connected to the side wall is the gap between the contact surfaces of the first mating part 11 and the second mating part 21. When the upper mold 1 and the lower mold 2 are closed and pressed together, the first mating part 11 and the second mating part 21 cannot be completely seamlessly fitted due to the machining accuracy. Therefore, there is a gap communicating with the cavity 5 (i.e., the parting surface 51). The parting surface 51 includes a first vertical parting surface 511 that is connected to the highest point of the cavity 5 and is vertically arranged. The first vertical parting surface 511 is vertically arranged and located at the highest point of the cavity 5, and the lowest point of the first vertical parting surface 511 is connected to the highest point of the cavity 5. This creates a height difference between the cavity 5 and the parting surface 51, which prevents the material from flowing into the parting surface 51 during vacuuming and causing blockage of the gas channel of the parting surface. This ensures the normal operation of vacuuming, thereby ensuring sufficient filling of the material and avoiding the generation of air holes.

[0015] like Figure 1 As shown, the parting surface 51 includes a transverse parting surface 512 located above the first vertical parting surface 511 and extending laterally outward. The transverse parting surface 512 is located outside the first vertical parting surface 511 to facilitate rapid mold closing between the upper mold 1 and the lower mold 2. Simultaneously, it changes the trajectory direction of the parting surface 51, extends its length, increases the contact area between the upper mold 1 and the lower mold 2, and improves the sealing effect. An annular groove 22 is provided on the inner wall of the lower mold 2 at the connection point between the first vertical parting surface 511 and the transverse parting surface 512. The annular groove 22 increases the sealing effect. The connection space of the vacuum equipment facilitates stable vacuuming of the cavity 5. The annular notch 22, together with the first vertical parting surface 511 and the horizontal parting surface 512, forms an annular channel 23. The annular notch 22, together with the first vertical parting surface 511 and the horizontal parting surface 512, forms a closed annular channel 23, ensuring the stability of the vacuuming environment. At the same time, if a small amount of material seeps into the parting surface 51, it can be drawn into the annular channel 23 to collect the seeping material and prevent the material from clogging the parting surface 51 and affecting the normal operation of the vacuuming process.

[0016] like Figure 1As shown, a second vertical parting surface 513 is provided at the end of the transverse parting surface 512. The second vertical parting surface 513 is located above the first vertical parting surface 511, which can increase the length of the parting surface 51 and increase the sealing of the subsequent connection of the annular channel 23, enhance the stability of the vacuum environment, and further reduce the possibility of material leakage. A sealing ring 514 is provided on the second vertical parting surface 513 for sealing the gap between the upper mold 1 and the lower mold 2. The sealing ring 514 is located on the second vertical parting surface 513 above the first vertical parting surface 511, which enhances the sealing of the rear side of the transverse parting surface 512 and the airtightness of the parting surface 512, ensures the stability of the vacuum environment, and avoids the instability of the vacuum rate.

[0017] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A vacuum forming mold for thermosetting materials, comprising an upper mold (1) and a lower mold (2), characterized in that: The lower mold (2) has a mold core (3) in the middle. The upper mold (1) has a first mating part (11) at the bottom that seals with the upper part of the mold core (3). The lower mold (2) has a second mating part (21) that fits with the outer wall of the first mating part (11). The mold core (3) and the lower mold (2) have a base (4) at the bottom that seals with each other. The upper mold (1), the lower mold (2), the mold core (3) and the base (4) surround each other to form a cavity (5). The side of the first mating part (11) and the second mating part (21) that contacts each other forms a parting surface (51) that connects with the side wall of the cavity (5). The parting surface (51) includes a first vertical parting surface (511) that connects with the highest point of the cavity (5) and is vertically arranged.

2. The vacuum forming mold for thermosetting materials according to claim 1, characterized in that: The parting surface (51) includes a transverse parting surface (512) located above the first vertical parting surface (511) and extending laterally outward.

3. The vacuum forming mold for thermosetting materials according to claim 2, characterized in that: The inner wall of the lower mold (2) is provided with an annular notch (22) at the connection between the first vertical parting surface (511) and the horizontal parting surface (512).

4. The vacuum forming mold for thermosetting materials according to claim 3, characterized in that: The annular notch (22) forms an annular channel (23) by enclosing the first vertical parting surface (511) and the horizontal parting surface (512).

5. A vacuum forming mold for thermosetting materials according to claim 2, characterized in that: The end of the horizontal parting surface (512) is provided with a vertically arranged second vertical parting surface (513), which is located above the first vertical parting surface (511).

6. The vacuum forming mold for thermosetting materials according to claim 5, characterized in that: The second vertical parting surface (513) is provided with a sealing ring (514) for sealing the gap between the upper mold (1) and the lower mold (2).

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