Die structure for efficiently stripping deep-cavity product

Abstract

The utility model relates to the technical field of dies, in particular to a die structure for efficiently stripping a deep-cavity product, which comprises a die holder, a rear die core arranged on the die holder and a die core connected with the rear die core, the die core is provided with an air jacking component, and the air jacking component comprises an air jacking pipe embedded in the die core. The air jacking pipe is connected with the mold core, the air jacking head is connected with the air jacking pipe, the upper end face of the air jacking head is flush with the upper end face of the mold core, the air jacking pipe extends to the mold base, and a breather pipe is embedded in the mold base and communicated with the air jacking pipe. According to the utility model, the gas jacking pipe is embedded in the mold core and is connected with the gas jacking head, so that in the mold opening process after injection molding, the gas jacking head can be jacked out towards one side of a product, a gap is formed between the product and the mold core, the product is prevented from being adhered to the mold core, and then under the matching of the inclined jacking insert and the jacking block, smooth and rapid demolding is realized, the demolding time is shortened, and the production efficiency is improved. And the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold structure for efficiently demoulding deep-cavity products. Background Art

[0002] Injection molding is a manufacturing technology widely used in industrial production. It injects molten thermoplastics or thermosetting materials into a precisely designed mold, and forms plastic products of various shapes and sizes after cooling and solidification. This process usually relies on an injection molding machine, which can provide the pressure and temperature control required for injection molding. In the field of injection molding, the mold design must be carefully adapted to the structural characteristics of specific products, especially for products with deep cavity structures. The height of the glue position is high, which can easily cause the product to stick to the mold surface during the demoulding process after injection molding, making demoulding complicated and difficult, and difficult to demold smoothly. As shown in the attached figure Figure 6 The example product shown not only has a deep cavity structure, but also has bosses and hook structures designed on the bottom of its inner wall. These features significantly increase the difficulty of demolding, and the demolding process takes a long time. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a mold structure for efficiently demoulding deep-cavity products.

[0004] The utility model is implemented by the following scheme:

[0005] A mold structure for efficiently demolding deep-cavity products, comprising a mold base, a rear mold core arranged on the mold base, a mold core connected to the rear mold core, the mold core being provided with an air top assembly, the air top assembly comprising an air top pipe buried in the mold core, an air top head connected to the air top pipe, the upper end face of the air top head being flush with the upper end face of the mold core, the air top pipe extending to the mold base, a vent pipe buried in the mold base, the vent pipe being connected to the air top pipe; a first inclined top insert is provided on one side of the mold core, the first inclined top insert has a first inclined rod, the lower end of the first inclined rod extends to the bottom of the mold base, the lower end of the first inclined rod is connected to an inclined top seat, the inclined top seat has a connecting groove, and the first inclined rod is connected to the connecting groove.

[0006] Furthermore, the connecting groove is a T-shaped groove, and two opposite side walls of the end of the first oblique rod are provided with rollers.

[0007] Furthermore, the rear mold core is provided with a push block, and a push rod is provided in the rear mold core. The upper end of the push rod is connected to the push block, and the lower end of the push rod extends below the bottom surface of the mold base.

[0008] Furthermore, the top surface of the rear mold core is provided with a recessed portion for mounting a top block.

[0009] Furthermore, there are two top blocks, which are respectively arranged on two opposite sides of the mold core, and there are correspondingly two recessed parts.

[0010] Furthermore, a forming boss is provided on the mold core, and a second inclined top insert and a third inclined top insert are respectively provided on both sides of the forming boss, and the lower ends of the second inclined top insert and the third inclined top insert are both connected to connecting rods.

[0011] Furthermore, a first molding part is provided on one side of the second slanted top insert, and a molding cavity of the product hook part is formed between the second slanted top insert and the first molding part; a second molding part is provided on one side of the third slanted top insert, and a molding cavity of the product hook part is formed between the third slanted top insert and the second molding part.

[0012] Furthermore, the mold core is provided with a molding concave platform for molding the inner wall boss of the product, and the first inclined top insert is arranged at the molding concave platform.

[0013] Furthermore, the rear mold core is provided with a through opening, and the lower end of the mold core passes through the through opening and is connected to the mold base.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model embeds an air ejector pipe in the mold core, and the air ejector pipe is connected to an air ejector head. During the mold opening process after injection molding, the air ejector head can be ejected toward one side of the product to create a gap between the product and the mold core, thereby preventing the product from sticking to the mold core. Subsequently, with the cooperation of the inclined ejector insert and the ejector block, smooth and rapid demolding is achieved, which reduces the demolding difficulty of deep-cavity products, shortens the demolding time, and improves operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a mold structure for efficiently demolding deep-cavity products provided by the present invention.

[0017] Figure 2 It is a schematic diagram of the rear mold core and mold part of the utility model.

[0018] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0019] Figure 4 for Figure 2 Cross-sectional view of .

[0020] Figure 5 This is a schematic diagram of the rear mold core of the utility model.

[0021] Figure 6This is a product diagram produced for this utility model.

[0022] Included in the figure are:

[0023] Mold base 1, rear mold core 2, ejector block 21, ejector rod 22, lower recess 23, through-hole 24, mold core 3, molding boss 31, second inclined ejector insert 32, third inclined ejector insert 33, first molding part 34, second molding part 35, molding recess 36, connecting rod 37, air ejector assembly 4, air ejector pipe 41, air ejector head 42, vent pipe 43, first inclined ejector insert 5, first inclined rod 51, inclined ejector seat 52, connecting groove 53, roller 54, product 6. DETAILED DESCRIPTION

[0024] In order to facilitate those skilled in the art to understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and drawings.

[0025] Reference Figures 1 to 5 The utility model provides a mold structure for efficiently demolding deep-cavity products, comprising a mold base, a rear mold core arranged on the mold base, a mold core connected to the rear mold core, the mold core being provided with an air ejector assembly, the air ejector assembly comprising an air ejector pipe embedded in the mold core, an air ejector head connected to the air ejector pipe, the upper end face of the air ejector head being flush with the upper end face of the mold core, the air ejector pipe extending to the mold base, a vent pipe embedded in the mold base, the vent pipe being connected to the air ejector pipe. In this embodiment, the air ejector head is roughly located in the middle of the mold core. When the mold is opened after the product is formed, the vent pipe introduces gas into the air ejector pipe. Under the action of the gas pressure, the air ejector head ejects the product from the mold core, creating a gap between the product and the mold core, that is, loosening the product so that the product does not stick to the mold core.

[0026] A first inclined ejector insert is provided on one side of the mold core. The first inclined ejector insert comprises a first inclined rod, the lower end of which extends below the mold base. The lower end of the first inclined rod is connected to an inclined ejector seat, which has a connecting groove, to which the first inclined rod is connected. After air from the air ejector head loosens the product, the first inclined ejector insert continues to eject, separating the product from the mold core.

[0027] The connecting groove is a T-shaped groove, and rollers are provided on two opposite side walls of the end of the first inclined rod. The rollers can roll along the T-shaped groove, so that the lower ends of the rollers have a certain amount of space to move during the ejection of the first inclined top insert, thereby preventing the first inclined top insert from getting stuck.

[0028] The rear mold core is provided with an ejector block, and an ejector rod is provided within the rear mold core. The upper end of the ejector rod is connected to the ejector block, and the lower end of the ejector rod extends below the bottom surface of the mold base. The ejector rod can be connected to the ejector plate of the mold to facilitate the movement of the ejector block and eject the product from the mold core.

[0029] The top surface of the rear mold core is provided with a concave portion for mounting a top block. The top block is initially located in the concave portion and cooperates with the rear mold core and the mold core to form the opening of the product.

[0030] The mold core is provided with a forming boss, with a second and third inclined top insert disposed on either side of the forming boss, respectively. Connecting rods are connected to the lower ends of the second and third inclined top inserts. The connecting rods can be connected to the mold's ejector plate to facilitate ejection during mold opening, allowing the second and third inclined top inserts to separate from the product.

[0031] A first molding piece is provided on one side of the second slanted top insert, and a molding cavity of the product hook part is formed between the second slanted top insert and the first molding piece. A second molding piece is provided on one side of the third slanted top insert, and a molding cavity of the product hook part is formed between the third slanted top insert and the second molding piece.

[0032] The mold core is provided with a forming recess for forming a protrusion on the inner wall of the product, and the first inclined top insert is arranged in the forming recess. The top shape of the first inclined top insert matches the protrusion on the flattened inner wall. During the mold opening process, the first inclined top insert is ejected and separated from the protrusion portion of the product.

[0033] The rear mold core is provided with a through opening, and the lower end of the mold core passes through the through opening and is connected to the mold base.

[0034] In specific implementation, the mold also has other structures such as a bottom plate, an ejector plate, and a front mold core. After injection molding, during the mold opening process, the air ejector head is first ejected to one side of the product under pressure, creating a gap between the product and the mold core, that is, loosening the product so that the product will not be tightly adhered to the mold core. Then, with the ejection of the first inclined top insert, the second inclined top insert, the third inclined top insert, and the ejector block, the product is completely separated from the mold core, achieving smooth demolding.

[0035] Reference Figures 1 to 5 The utility model provides a mold structure for efficiently demolding deep-cavity products, comprising a mold base, a rear mold core arranged on the mold base, a mold core connected to the rear mold core, the mold core being provided with an air ejector assembly, the air ejector assembly comprising an air ejector pipe embedded in the mold core, an air ejector head connected to the air ejector pipe, the upper end face of the air ejector head being flush with the upper end face of the mold core, the air ejector pipe extending to the mold base, a vent pipe embedded in the mold base, the vent pipe being connected to the air ejector pipe. In this embodiment, the air ejector head is roughly located in the middle of the mold core. When the mold is opened after the product is formed, the vent pipe introduces gas into the air ejector pipe. The gas, under the action of pressure, ejects the product from the mold core, creates a gap between the product and the mold core, loosens the product, and prevents the product from sticking to the mold core.

[0036] A first inclined ejector insert is provided on one side of the mold core. The first inclined ejector insert comprises a first inclined rod, the lower end of which extends below the mold base. The lower end of the first inclined rod is connected to an inclined ejector seat, which has a connecting groove, to which the first inclined rod is connected. After air from the air ejector head loosens the product, the first inclined ejector insert continues to eject, separating the product from the mold core.

[0037] The connecting groove is a T-shaped groove, and rollers are provided on two opposite side walls of the end of the first inclined rod. The rollers can roll along the T-shaped groove, so that the lower ends of the rollers have a certain amount of space to move during the ejection of the first inclined top insert, thereby preventing the first inclined top insert from getting stuck.

[0038] The rear mold core is provided with an ejector block, and an ejector rod is provided within the rear mold core. The upper end of the ejector rod is connected to the ejector block, and the lower end of the ejector rod extends below the bottom surface of the mold base. The ejector rod can be connected to the ejector plate of the mold to facilitate the movement of the ejector block and eject the product from the mold core.

[0039] The top surface of the rear mold core is provided with a concave portion for mounting a top block. The top block is initially located in the concave portion and cooperates with the rear mold core and the mold core to form the opening of the product.

[0040] In this embodiment, two top blocks are provided, and the two top blocks are respectively provided on two opposite sides of the mold core, and two corresponding recessed portions are provided.

[0041] The mold core is provided with a forming boss, with a second and third inclined top insert disposed on either side of the forming boss, respectively. Connecting rods are connected to the lower ends of the second and third inclined top inserts. The connecting rods can be connected to the mold's ejector plate to facilitate ejection during mold opening, allowing the second and third inclined top inserts to separate from the product.

[0042] A first molding piece is provided on one side of the second slanted top insert, and a molding cavity of the product hook part is formed between the second slanted top insert and the first molding piece. A second molding piece is provided on one side of the third slanted top insert, and a molding cavity of the product hook part is formed between the third slanted top insert and the second molding piece.

[0043] The mold core is provided with a forming recess for forming a protrusion on the inner wall of the product, and the first inclined top insert is arranged in the forming recess. The top shape of the first inclined top insert matches the protrusion on the flattened inner wall. During the mold opening process, the first inclined top insert is ejected and separated from the protrusion portion of the product.

[0044] The rear mold core is provided with a through opening, and the lower end of the mold core passes through the through opening and is connected to the mold base.

[0045] In specific implementation, the mold also has other structures such as a bottom plate, an ejector plate, and a front mold core. After injection molding, during the mold opening process, the air ejector head is first ejected to one side of the product under pressure, creating a gap between the product and the mold core, that is, loosening the product so that the product will not be tightly adhered to the mold core. Then, with the ejection of the first inclined top insert, the second inclined top insert, the third inclined top insert, and the ejector block, the product is completely separated from the mold core, achieving smooth demolding.

[0046] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are only for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] Furthermore, the terms "first," "second," and so on are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0048] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0049] Although the present invention has been described with reference to the above specific embodiments, it is apparent that those skilled in the art can make many substitutions, modifications, and variations based on the above. Therefore, all such substitutions, modifications, and variations are intended to fall within the scope of the appended claims.

Claims

1. A mold structure for efficient demoulding of deep cavity products, characterized in that: It includes a mold base, a rear mold core arranged on the mold base, and a mold core connected to the rear mold core, the mold core is provided with an air top assembly, the air top assembly includes an air top pipe buried in the mold core, and an air top head connected to the air top pipe, the upper end face of the air top head is flush with the upper end face of the mold core, the air top pipe extends to the mold base, a ventilation pipe is buried in the mold base, and the ventilation pipe is connected to the air top pipe; a first inclined top insert is provided on one side of the mold core, the first inclined top insert has a first inclined rod, the lower end of the first inclined rod extends to the bottom of the mold base, the lower end of the first inclined rod is connected to an inclined top seat, the inclined top seat has a connecting groove, and the first inclined rod is connected to the connecting groove.

2. The mold structure for efficient demoulding of deep cavity products according to claim 1 is characterized in that: The connecting groove is a T-shaped groove, and two opposite side walls of the end of the first oblique rod are both provided with rollers.

3. The mold structure for efficient demoulding of deep cavity products according to claim 1 is characterized in that: The rear mold core is provided with a top block, and a top rod is provided in the rear mold core. The upper end of the top rod is connected to the top block, and the lower end of the top rod extends below the bottom surface of the mold base.

4. The mold structure for efficient demoulding of deep cavity products according to claim 3 is characterized in that: The top surface of the rear mold core is provided with a concave portion for mounting a top block.

5. The mold structure for efficient demoulding of deep cavity products according to claim 4, characterized in that: There are two top blocks, which are respectively arranged on two opposite sides of the mold core, and there are correspondingly two recessed parts.

6. The mold structure for efficient demoulding of deep cavity products according to claim 1, characterized in that: A forming boss is provided on the mold core, and a second inclined top insert and a third inclined top insert are respectively provided on both sides of the forming boss. The lower ends of the second inclined top insert and the third inclined top insert are both connected with connecting rods.

7. The mold structure for efficient demoulding of deep cavity products according to claim 6, characterized in that: A first molding piece is provided on one side of the second slanted top insert, and a molding cavity of the product hook part is formed between the second slanted top insert and the first molding piece. A second molding piece is provided on one side of the third slanted top insert, and a molding cavity of the product hook part is formed between the third slanted top insert and the second molding piece.

8. The mold structure for efficient demoulding of deep cavity products according to claim 1, characterized in that: The mold core is provided with a forming concave platform for forming a boss on the inner wall of the product, and the first inclined top insert is arranged at the forming concave platform.

9. The mold structure for efficient demoulding of deep cavity products according to claim 1, characterized in that: The rear mold core is provided with a through opening, and the lower end of the mold core passes through the through opening and is connected to the mold base.

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