A kind of core injection backhoe auxiliary lip pressing die mechanism, injection stretch blow molding mold

Abstract

This utility model discloses a core injection backhoe-assisted lip mold pressing mechanism and an injection stretch blow molding die. The core injection backhoe-assisted lip mold pressing mechanism includes: a lip mold composed of two semi-circular structures; a core injection that penetrates the lip mold and presses against it; and a backhoe clamping structure between the top of the lip mold and the core injection for clamping the top of the lip mold. This utility model, by providing a backhoe clamping structure between the top of the lip mold and the core injection, and creating a stepped bevel on the end face of the core injection and the upper end face of the lip mold, allows the bevel of the core injection to clamp the bevel of the lip mold end face, thus holding the top of the lip mold and preventing it from opening under injection pressure.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to a core injection backhoe auxiliary pressing lip die mechanism and an injection stretch blow molding die. Background Technology

[0002] In injection stretch blow molding dies, the lip mold is composed of two semicircles. During mold closing, the inclined surface of the injection cavity holds the lower inclined surface of the lip mold, and the core injector presses down on the lip mold from above. During injection, molten plastic enters from the sprue and fills the entire cavity. If the mold position is limited, the area where the inclined surface of the injection cavity holds the lip mold may be too small, resulting in insufficient force to hold the lip mold. The injection pressure will cause the upper end of the lip mold to open, creating flash. To address this, a core injector backhoe mechanism is designed to assist in pressing the lip mold. Summary of the Invention

[0003] According to a first aspect of the present invention, a core injection backhoe auxiliary pressing lip mold mechanism is provided, comprising: A lip mold, which consists of two semi-circular structures; Core injection: The core is injected through the lip mold and pressed onto the lip mold; A back spade clamping structure is provided between the top of the lip mold and the injection core to clamp the top of the lip mold.

[0004] Furthermore, the backhoe clamping structure includes: The first step is set on the core injection; The second step is located at the top of the lip mold. The second step is held by the first step, which is divided into two halves and located at the top of the two semicircular structures of the lip mold.

[0005] Furthermore, the first and second steps are equipped with mutually fitting inclined surfaces.

[0006] According to a second aspect of the present invention, an injection stretch blow molding die is provided, comprising a core injection backhoe auxiliary pressing lip die mechanism as described in the first aspect.

[0007] According to an embodiment of the present invention, an injection backhoe auxiliary pressing lip mold mechanism is provided between the top of the lip mold and the injection core, with a backhoe clamping structure. A ring of inclined steps is made on the end face of the injection core, and a ring of inclined steps is also made on the upper end face of the lip mold. The inclined ring of the injection core clamps the inclined side of the end face of the lip mold, holding the top of the lip mold in place to prevent the injection pressure from opening.

[0008] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0009] Figure 1This is a cross-sectional structural schematic diagram of a core injection backhoe auxiliary pressing lip mold mechanism according to an embodiment of the present utility model.

[0010] Figure 2 for Figure 1 A magnified view of a portion of point a.

[0011] Figure 3 This is a cross-sectional structural schematic diagram of the lip mold of an injection backhoe auxiliary pressing lip mold mechanism according to an embodiment of the present utility model.

[0012] Figure 4 This is a top view of the lip mold of an injection backhoe-assisted lip mold mechanism according to an embodiment of the present invention. Detailed Implementation

[0013] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0014] First, combine Figures 1-4 This invention describes a core injection backhoe auxiliary pressing lip mold mechanism according to an embodiment of the present invention, which is used in injection stretch blow molding molds and has a wide range of applications.

[0015] like Figures 1-4 As shown, an embodiment of the present invention provides a core injection backhoe auxiliary pressing lip mold mechanism, which includes a lip mold 100 and a core injection 200.

[0016] Specifically, such as Figures 1-4 As shown, the lip mold 100 consists of two semi-circular structures; the injection core 200 penetrates the lip mold 100 and presses against it; a backhoe clamping structure is provided between the top of the lip mold 100 and the injection core 200 to clamp the top of the lip mold 100. The backhoe clamping structure includes a first step 301 and a second step 302. The first step 301 is located on the injection core 200; the second step 302 is located on the top of the lip mold 100 and is clamped by the first step 301. The first step 301 is divided into two halves, which are respectively located on the tops of the two semi-circular structures of the lip mold 100; the first step 301 and the second step 302 are provided with mutually fitting inclined surfaces 303.

[0017] As described above, in a core injection backhoe-assisted lip mold mechanism according to an embodiment of the present utility model, a backhoe clamping structure is provided between the top of the lip mold 100 and the core injection 200. A sloped step is made on the end face of the core injection 200, and a sloped step is also made on the upper end face of the lip mold 100. The slope of the core injection 200 clamps the slope of the end face of the lip mold 100, clamping the top of the lip mold 100 to prevent the injection pressure from opening.

[0018] The above combined with the appendix Figures 1-4A core injection backhoe auxiliary pressing lip mold mechanism according to an embodiment of the present invention is described. Furthermore, the present invention can also be applied to an injection stretch blow molding die.

[0019] According to a second aspect of the present invention, an injection stretch blow molding die is provided, comprising a core injection backhoe auxiliary pressing lip die mechanism as described in the first aspect.

[0020] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A core injection backhoe auxiliary pressing lip mold mechanism, comprising: A lip mold, the lip mold being composed of two semi-circular structures; The core is injected through the lip mold and pressed onto the lip mold; Its features are, A backhoe clamping structure is provided between the top of the lip mold and the injection core to clamp the top of the lip mold.

2. The core injection backhoe auxiliary pressing lip mold mechanism as described in claim 1, characterized in that, The backhoe clamping structure includes: The first step is disposed on the injection core; The second step is located at the top of the lip mold and is held by the first step. The first step is divided into two halves and is respectively located at the top of the two semi-circular structures of the lip mold.

3. The core injection backhoe auxiliary pressing lip mold mechanism as described in claim 2, characterized in that, The first step and the second step are provided with mutually fitting inclined surfaces.

4. A type of injection stretch blow molding die, characterized in that, It includes the core injection back spade auxiliary pressing lip mold mechanism as described in any one of claims 1 to 3.

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