Forming mold of liquid silica gel mask

Abstract

The utility model relates to the technical field of molds, and particularly discloses a forming mold of a liquid silica gel mask. Wherein the upper die assembly comprises an upper die core; the lower mold assembly comprises a lower mold plate, a lower mold core assembly arranged on the lower mold plate, a mold core insert connected with the lower mold core assembly and a secondary ejection assembly arranged below the lower mold plate and connected with the mold core insert, and the lower mold core assembly is used for forming the outer surface of the silica gel mask; the mold core insert is used for forming the inner surface of the silica gel mask, and the upper mold core, the lower mold core assembly and the mold core insert are combined to form a forming cavity; the first stage of the secondary ejection assembly is used for separating the silica gel mask from the lower mold core assembly, and the second stage of the secondary ejection assembly is used for separating the silica gel mask from the mold core insert. The secondary ejection demolding device is good in secondary ejection demolding effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially a forming mould of liquid silica gel face guard. BACKGROUND

[0002] In the field of modern medical instrument manufacturing, silica gel face guard becomes the key component in many medical devices due to its excellent biocompatibility, softness and sealing performance. However, the production process of silica gel face guard still faces the phenomenon of sticking to the mould, which is due to the high viscosity and softness of silica gel material, plus the complexity of the structure of the face guard, so that silica gel is easy to generate strong adhesion force with the surface of the mould after cooling and solidification, which seriously affects the yield and production efficiency of the product. SUMMARY

[0003] The utility model discloses at least solve one of the prior art technical problems. Therefore, the utility model provides a forming mould of liquid silica gel face guard, and the structure secondary ejection demoulding effect is good.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A forming mould of liquid silica gel face guard, comprising:

[0006] The upper die assembly comprises an upper die core;

[0007] The lower die assembly comprises a lower die plate, a lower die core assembly arranged on the lower die plate, a die core insert connected with the lower die core assembly, and a secondary ejection assembly arranged below the lower die plate and connected with the die core insert, the lower die core assembly is used for forming the outer surface of the silica gel face guard, the die core insert is used for forming the inner surface of the silica gel face guard, and the upper die core, the lower die core assembly and the die core insert are combined to form a forming cavity; the first stage of the secondary ejection assembly is used for separating the silica gel face guard from the lower die core assembly, and the second stage of the secondary ejection assembly is used for separating the silica gel face guard from the die core insert.

[0008] According to some embodiments of the utility model, the die core insert comprises an upper insert and a lower insert for forming the inner surface of the silica gel face guard, the secondary ejection assembly comprises a first ejection structure connected with the lower insert and a second ejection structure connected with the upper insert, and the first ejection structure is arranged above the second ejection structure.

[0009] According to some embodiments of the utility model, the lower insert comprises a forming part, an upper fixing part at the top thereof for connecting with the upper insert, and a lower fixing part at the bottom thereof for connecting with the first ejection structure.

[0010] According to some embodiments of the utility model, the first ejection structure includes first roof, second roof and first ejection rod fixed on the first roof and second roof lower end, first ejection rod upper end is connected with the lower part insert piece.

[0011] According to some embodiments of the utility model, the first ejection rod upper end has the top boss inserted into the lower fixed part lower end, and the lower fixed part has a first groove matched with the top boss.

[0012] According to some embodiments of the utility model, the upper fixed part is connected with the first ejection rod through fastener.

[0013] According to some embodiments of the utility model, the second ejection structure includes third roof and second ejection rod connected with the third roof, and the second ejection rod passes through the first ejection rod and is connected with the upper part insert piece.

[0014] According to some embodiments of the utility model, the lower die core assembly is provided with the first guide insert block slidably connected with the first ejection rod, the lower part insert piece is provided with the second guide insert block slidably connected with the second ejection rod, and the second guide insert block lower end is abutted with the first ejection rod.

[0015] According to some embodiments of the utility model, the two sides of the secondary ejection assembly are provided with stroke control structures for controlling the ejection sequence, the stroke control structure includes spring top block structure arranged on the side of the first ejection structure, connecting block with the second ejection structure lower end connected and the spring top block structure upper part abutted, and the top rod for separating the spring top block structure and the connecting block.

[0016] According to some embodiments of the utility model, the top rod upper end is connected with the lower die plate, and the lower end is provided with the first inclined surface for pressing the spring top block structure; the spring top block structure upper end is provided with the second inclined surface matched with the first inclined surface; and the connecting block upper part is provided with the second groove matched with the spring top block structure.

[0017] The utility model has at least the following beneficial effects:

[0018] The secondary ejection assembly is divided into two stages, the first stage is that the silica gel face guard is separated from the lower die core assembly, the silica gel face guard is driven as a whole by the die core insert piece and is separated from the lower die core assembly, the outer surface of the silica gel face guard is demoulded before the inner surface, and the second stage is that the silica gel face guard is separated from the die core insert piece, the inner surface of the silica gel face guard is demoulded, and the stage ejection can effectively avoid the deformation, tearing or sticking of the silica gel face guard in the demoulding process. ACCURACY OF DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0020] Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of the area marked A in the middle. Detailed Implementation

[0021] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0022] 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.

[0023] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0024] An embodiment of this utility model provides a molding die for a liquid silicone face mask, such as... Figures 1-2 As shown, it includes:

[0025] Upper mold assembly 1 includes upper mold core 101;

[0026] The lower mold assembly 2 includes a lower mold plate 201, a lower mold core assembly 202 disposed on the lower mold plate 201, a mold core insert 203 connected to the lower mold core assembly 202, and a secondary ejection assembly 204 disposed below the lower mold plate 201 and connected to the mold core insert 203. The lower mold core assembly 202 is used to form the outer surface of the silicone mask, and the mold core insert 203 is used to form the inner surface of the silicone mask. The upper mold core 101, the lower mold core assembly 202, and the mold core insert 203 are combined to form a molding cavity. The first stage of the secondary ejection assembly 204 is used to separate the silicone mask from the lower mold core assembly 202, and the second stage of the secondary ejection assembly 204 is used to separate the silicone mask from the mold core insert 203.

[0027] The lower mold core assembly 202 is used for forming the outer surface of the silica gel mask, the mold core insert 203 is used for forming the inner surface, and the secondary ejection assembly 204 is divided into two stages. In the first stage, the silica gel mask is separated from the lower mold core assembly 202, and the silica gel mask can be driven as a whole with the mold core insert 203 to separate from the lower mold core assembly 202 through the connection with the mold core insert 203, so that the outer surface of the silica gel mask is first demolded with the inner surface in one step. In the second stage, the silica gel mask is separated from the mold core insert 203, so that the inner surface of the silica gel mask is demolded. Due to the characteristics of the liquid silica gel mask, the structure is curved inward, and direct demolding is easy to stick and break. The staged ejection can effectively avoid the deformation, tearing or sticking of the silica gel mask caused by pulling during the demolding process. The split design makes the mold better adapt to the molding of silica gel masks with complex shapes, and improves the qualification rate of the products. In the embodiment, the lower mold core assembly 202 also has a side core-pulling structure for forming the side surface structure of the silica gel mask, which is more beneficial to the demolding of the silica gel mask.

[0028] In some embodiments, as shown in Figure 2 The mold core insert 203 includes an upper insert 205 and a lower insert 206 for forming the inner surface of the silica gel mask, and the secondary ejection assembly 204 includes a first ejection structure 207 connected with the lower insert 206 and a second ejection structure 208 connected with the upper insert 205, and the first ejection structure 207 is arranged above the second ejection structure 208.

[0029] The silica gel mask in the embodiment is also provided with a plastic accessory integrally formed with the silica gel mask. The plastic accessory is placed on the upper insert 205, and the silica gel part of the mask is formed by the lower insert 206 cooperating with the lower mold core assembly 202. The split design can more accurately control the shape of the inner surface of the silica gel mask. When the local structure changes, the upper insert 205 or the lower insert 206 can be replaced separately without replacing the entire mold core insert 203, thereby reducing the cost. The lower insert 206 and the upper insert 205 are respectively connected with different ejection structures. In the embodiment, the first ejection structure 207 and the second ejection structure 208 are simultaneously upwardly ejected in the first stage, so that the bottom of the silica gel mask is separated from the lower mold core assembly 202. In the second stage, the first ejection structure 207 is stationary, and the second ejection structure 208 continues to be upwardly ejected, so that the silica gel mask is separated from the lower insert 206, thereby achieving the demolding of the silica gel mask.

[0030] Further, as shown in Figure 2 The lower insert 206 includes a forming portion 209, an upper fixing portion 210 at the top thereof for connecting with the upper insert 205, and a lower fixing portion 211 at the bottom thereof for connecting with the first ejection structure 207.

[0031] The forming part 209 is specially used for forming the inner surface of the silica gel mask, the upper fixing part 210 is connected with the upper insert part 205, the integrity and firmness of the mold core insert part 203 during forming are improved, the lower fixing part 211 is connected with the first ejection structure 207, stable support is provided for the lower insert part 206, loosening and deformation during forming are avoided, and the forming precision is ensured.

[0032] Further, as shown in Figure 1 The first ejection structure 207 includes a first top plate 212, a second top plate 213, and a first ejection rod 214 fixed at the lower end of the first top plate 212 and the second top plate 213, and the upper end of the first ejection rod 214 is connected with the lower insert part 206.

[0033] Through the cooperative support of the first top plate 212 and the second top plate 213, the firmness of the first ejection rod 214 and other structures fixed on the first top plate 212 and the second top plate 213 is improved, stable ejection force is provided, the stable separation of the lower insert part 206 and the silica gel mask is ensured, the demolding efficiency and product quality are improved.

[0034] Further, as shown in Figure 2 The upper end of the first ejection rod 214 has a top boss 215 inserted into the lower end of the lower fixing part 211, and the lower fixing part 211 has a first groove matched with the top boss 215.

[0035] The matching design of the top boss 215 and the first groove improves the assembly precision and stability of the lower insert part 206 and the first ejection rod 214, ensures that the force transmission is more stable and reliable, and avoids product damage or incomplete demolding caused by loose connection during demolding.

[0036] Further, as shown in Figure 2 The upper fixing part 210 is connected with the first ejection rod 214 through a fastener 216.

[0037] Since the first ejection rod 214 abuts against the lower fixing part 211 of the lower insert part 206 to eject the lower insert part 206, the fastener 216 is connected between the upper fixing part 210 and the first ejection rod 214, the connection between the lower insert part 206 and the first ejection rod 214 is firm and reliable, and the stability of the mold during forming and demolding is enhanced.

[0038] In some embodiments, as shown in Figures 1-2 The second ejection structure 208 includes a third top plate 217 and a second ejection rod 218 connected with the third top plate 217, and the second ejection rod 218 passes through the first ejection rod 214 and is connected with the upper insert part 205.

[0039] The second ejection rod 218 is connected with the upper insert 205 through the first ejection rod 214, ensuring the accuracy and synchronization of the demolding action of the first ejection rod 214 and the second ejection rod 218, effectively reducing the damage and deformation of the product during demolding; the second ejection rod 218 cooperates with the upper insert 205 to realize the separation of the upper insert 205 and the lower insert 206, so that the silica gel mask is demolded from the inside.

[0040] Further, as shown in Figure 2 The lower die core assembly 202 is provided with a first guide insert 219 connected with the first ejection rod 214 in sliding mode, and the lower insert 206 is provided with a second guide insert 220 connected with the second ejection rod 218 in sliding mode, and the lower end of the second guide insert 220 abuts against the first ejection rod 214.

[0041] The first guide insert 219 and the second guide insert 220 facilitate accurate guidance of the first ejection rod 214 and the second ejection rod 218 during ejection, making the ejection action more smooth, ensuring that the first ejection rod 214 and the second ejection rod 218 move smoothly along the predetermined trajectory during demolding, and reducing movement deviation and jamming phenomenon.

[0042] Further, as shown in Figure 1 The two sides of the secondary ejection assembly 204 are provided with a stroke control structure 221 for controlling the ejection sequence, the stroke control structure 221 includes a spring top block structure 222 arranged on the side of the first ejection structure 207, a connecting block 223 connected with the second ejection structure 208 at the lower end and abutting against the spring top block structure 222 at the upper part, and a top rod 224 for separating the spring top block structure 222 and the connecting block 223.

[0043] In the first stage of the secondary ejection assembly 204, the second ejection structure 208 is upwardly ejected, the connecting block 223 connected with the second ejection structure 208 abuts against the spring top block structure 222 of the first ejection structure 207, so that the first ejection structure 207 is synchronously upwardly ejected, facilitating the simultaneous ejection of the upper insert 205 and the lower insert 206, when the spring top block structure 222 moves to one side of the top rod 224, it is pressed by the top rod 224 to separate from the connecting block 223, so that the first ejection structure 207 and the second ejection structure 208 are separated, thus entering the second stage of the secondary ejection assembly 204, the second ejection structure 208 continues to be upwardly ejected, while the first ejection structure 207 stops upwardly ejection.

[0044] Further, as shown in Figure 1 The upper end of the top rod 224 is connected with the lower die plate 201, and the lower end is provided with a first inclined surface 225 for pressing the spring top block structure 222; the upper end of the spring top block structure 222 is provided with a second inclined surface 226 matched with the first inclined surface 225; and the upper part of the connecting block 223 is provided with a second groove matched with the spring top block structure 222.

[0045] The bottom of the spring top block structure 222 in this embodiment is flat, and is pressed into the second recess by the spring during mold clamping, facilitating the second ejecting structure 208 to drive the connecting block 223 to be lifted upward, and simultaneously drive the first ejecting structure 207 to be lifted upward, further ensuring the precision control and stability of the ejection action. The first inclined surface 225 and the second inclined surface 226 are matched between the ejector rod 224 and the spring top block structure 222, so as to realize the pressing of the spring top block structure 222, so that the spring top block structure 222 is compressed into the first ejecting structure 207, facilitating the separation of the spring top block structure 222 and the connecting block 223, so that the first ejecting structure 207 and the second ejecting structure 208 can act in sequence within the preset stroke.

[0046] The terms and words used in the above description and claims are not limited by the literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present application. Therefore, it should be apparent to those skilled in the art that the description of various embodiments of the present application is provided merely to illustrate, not to limit, the present application as defined by the appended claims and their equivalents.

Claims

1. A forming mold for a liquid silicone rubber face mask, characterized by, Comprise: An upper die assembly (1) comprising an upper die core (101); A lower die assembly (2) comprising a lower die plate (201), a lower die core assembly (202) arranged on the lower die plate (201), a die core insert (203) connected with the lower die core assembly (202), and a secondary ejection assembly (204) arranged below the lower die plate (201) and connected with the die core insert (203), the lower die core assembly (202) is used for forming the outer surface of the silica gel mask, the die core insert (203) is used for forming the inner surface of the silica gel mask, and the upper die core (101), the lower die core assembly (202) and the die core insert (203) combine to form a forming cavity; the first stage of the secondary ejection assembly (204) is used for separating the silica gel mask from the lower die core assembly (202), and the second stage of the secondary ejection assembly (204) is used for separating the silica gel mask from the die core insert (203).

2. A forming mold for a liquid silicone gel face mask according to claim 1, wherein: The die core insert (203) comprises an upper insert (205) and a lower insert (206) for forming the inner surface of the silica gel mask, the secondary ejection assembly (204) comprises a first ejection structure (207) connected with the lower insert (206) and a second ejection structure (208) connected with the upper insert (205), and the first ejection structure (207) is arranged above the second ejection structure (208).

3. A forming mold for a liquid silicone gel face mask according to claim 2, wherein: The lower insert (206) comprises a forming portion (209), an upper fixing portion (210) at the top thereof for connecting with the upper insert (205), and a lower fixing portion (211) at the bottom thereof for connecting with the first ejection structure (207).

4. A forming mold for a liquid silicone gel face mask according to claim 3, wherein: The first ejection structure (207) comprises a first top plate (212), a second top plate (213), and a first ejection rod (214) fixed at the lower ends of the first top plate (212) and the second top plate (213), and the upper end of the first ejection rod (214) is connected with the lower insert (206).

5. A forming mold for a liquid silicone gel face mask according to claim 4, wherein: The upper end of the first ejection rod (214) has a top boss (215) inserted into the lower end of the lower fixing portion (211), and the lower fixing portion (211) has a first groove matched with the top boss (215).

6. A forming mold for a liquid silicone gel face mask according to claim 4, wherein: The upper fixing portion (210) is connected with the first ejection rod (214) by a fastener (216).

7. A forming mold for a liquid silicone gel face mask according to any one of claims 4-6, characterized in that: The second ejection structure (208) comprises a third top plate (217) and a second ejection rod (218) connected with the third top plate (217), and the second ejection rod (218) passes through the first ejection rod (214) to connect with the upper insert (205).

8. A forming mold for a liquid silicone gel face mask according to claim 7, wherein: The lower die core assembly (202) is provided with a first guide insert block (219) slidingly connected with the first ejection rod (214), the lower insert (206) is provided with a second guide insert block (220) slidingly connected with the second ejection rod (218), and the lower end of the second guide insert block (220) abuts against the first ejection rod (214).

9. A forming mold for a liquid silicone gel face mask according to claim 2, wherein: The secondary ejection assembly (204) is provided with stroke control structures (221) on both sides for controlling the ejection sequence, the stroke control structures (221) include spring top block structures (222) arranged on the side of the first ejection structure (207), connecting blocks (223) connected with the second ejection structure (208) at the lower end and abutting against the spring top block structures (222) at the upper part, and ejector rods (224) for separating the spring top block structures (222) from the connecting blocks (223).

10. A forming mold for a liquid silicone gel face mask according to claim 9, wherein: The upper end of the ejector rod (224) is connected with the lower mold plate (201), and the lower end is provided with a first inclined surface (225) for pressing against the spring top block structure (222); the upper end of the spring top block structure (222) is provided with a second inclined surface (226) matched with the first inclined surface (225); and the upper part of the connecting block (223) is provided with a second groove matched with the spring top block structure (222).

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