Mold core seat structure and blank injection mold

Abstract

The mold core seat structure comprises a mold core seat body and a mold core seat fixing ring, and the mold core seat fixing ring is connected to the periphery of the mold core seat body in a sleeving mode; according to the die core seat, the die core seat body and the die core seat fixing ring are two split parts, the die core seat fixing ring is made into a standard part, batch production is carried out, only different die core seat bodies need to be replaced for different die core seats, the machining procedures of the die core seat can be reduced, the machining cost is reduced, waste of machining materials is avoided, and the production efficiency of the die core seat is improved. And the production efficiency of the mold core seat and the part standardization degree of the injection mold are improved.

Description

Technical Field

[0001] This utility model belongs to the field of bottle preform mold technology, specifically relating to a mold core seat structure and a preform injection mold. Background Technology

[0002] In preform molds, the mold core holder is a support component used to fix and mount the mold core. In existing technology, conventional mold core holders are all one-piece structures, each consisting of a base portion and a main body portion that fits the mold core. The radial dimension of the base portion is much larger than the outer diameter of the main body portion. This one-piece mold core holder structure has the following drawbacks:

[0003] Each mold core requires milling to process the entire mold core, which consumes a lot of material;

[0004] The base body requires machining a large number of holes, resulting in a relatively large number of machining steps.

[0005] For different mold core seats, the structure of the seat body is basically the same in order to meet the installation requirements. However, the processing of the seat body will vary due to the one-piece mold core seat, making mass production impossible, resulting in resource waste and increased costs. Utility Model Content

[0006] In order to overcome at least some of the shortcomings of the prior art, this utility model provides a mold core seat structure and a casting mold.

[0007] A mold core seat structure includes a mold core seat body and a mold core seat fixing ring, wherein the mold core seat fixing ring is sleeved on the outer periphery of the mold core seat body and is radially positioned.

[0008] The outer periphery of the mold core seat body is provided with a body limiting end face, and the interior of the mold core seat fixing ring is provided with a fixing ring limiting end face. Based on the contact fit between the body limiting end face and the fixing ring limiting end face, the mold core seat fixing ring is axially positioned.

[0009] A positioning element is configured between the mold core base body and the mold core base fixing ring to restrict circumferential relative rotation, thereby positioning the mold core base fixing ring circumferentially.

[0010] As a preferred technical solution, the outer periphery of the mold core seat body includes a sleeve flange and a mold core seat body arranged sequentially, and the sleeve flange and the mold core seat body form the body limiting end face.

[0011] As a preferred technical solution, the mold core seat fixing ring has an axially penetrating sleeve hole inside. The sleeve hole includes a flange sleeve hole that matches the sleeve flange and an outer peripheral sleeve hole that matches the mold core seat body. The flange sleeve hole and the outer peripheral sleeve hole form the fixing ring limiting end face.

[0012] As a preferred technical solution, the mold core seat body has a first body positioning hole arranged along the axial direction, and the mold core seat fixing ring has a first fixing ring positioning hole corresponding to the first body positioning hole. The positioning member cooperates with the first body positioning hole and the first fixing ring positioning hole to perform circumferential positioning of the mold core seat fixing ring sleeved on the outer periphery of the mold core seat body.

[0013] As another preferred technical solution, the mold core seat fixing ring has a second fixing ring positioning hole arranged radially, and the mold core seat body has a second body positioning hole corresponding to the second fixing ring positioning hole. The positioning member cooperates with the second body positioning hole and the second fixing ring positioning hole to perform circumferential positioning of the mold core seat fixing ring sleeved on the outer periphery of the mold core seat body.

[0014] As a preferred technical solution, after the mold core seat body and the mold core seat fixing ring are installed, the end face of the mold core seat body near the body limiting end face is flush with the outer end face of the mold core seat fixing ring.

[0015] As a preferred technical solution, the interior of the mold core base body has axially penetrating mounting holes; the mounting holes include mold core mounting holes and mold lip mating holes arranged sequentially.

[0016] As a preferred technical solution, the mounting hole also includes a mold core sleeve mounting hole, which is located between the mold core mounting hole and the mold lip mating hole.

[0017] As a preferred technical solution, the mold core seat fixing ring includes a pair of first side surfaces and a pair of second side surfaces arranged opposite to each other. The side surface with the shorter distance between the pair of first side surfaces and the pair of second side surfaces is provided with a hollow structure. The length of the shorter distance is equal to the diameter of the sleeve flange, and the outer wall of the sleeve flange is exposed from the hollow structure.

[0018] This utility model also provides a preform mold, including a plurality of molding components for molding bottle preforms, wherein the molding components include a mold core seat structure for mounting a mold core, and the mold core seat structure is any of the above-mentioned mold core seat structures.

[0019] The beneficial effects of this utility model are: by setting the mold core seat as two separate components, the mold core seat body and the mold core seat fixing ring, and making the mold core seat fixing ring into a standard part for mass production, only different mold core seat bodies need to be replaced for different mold core seats, which can reduce the processing steps of the mold core seat, reduce processing costs, avoid waste of processing materials, improve the production efficiency of the mold core seat and the standardization of injection mold parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the mold core holder in the assembled state according to Example 1;

[0021] Figure 2 This is a schematic diagram of the mold core holder in the disassembled state in Example 1;

[0022] Figure 3 This is a schematic diagram of the internal structure of the mold core holder in the assembled state, as shown in Example 1.

[0023] Figure 4 This is a schematic diagram of the internal structure of the mold core holder body in Embodiment 1;

[0024] Figure 5 This is a schematic diagram of the internal structure of the mold core holder fixing ring in Embodiment 1;

[0025] Figure 6 This is a schematic diagram of the internal structure of the mold core holder in the assembled state in Example 2;

[0026] Figure 7 This is a schematic diagram of the internal structure of the mold core body in Example 2;

[0027] Figure 8 This is a schematic diagram of the internal structure of the core holder fixing ring in Example 2. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0029] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model. Example 1

[0031] like Figures 1 to 5 As shown, this embodiment discloses a mold core seat structure, including a mold core seat body 1 and a mold core seat fixing ring 2. The mold core seat fixing ring 2 is sleeved on the outer periphery of the mold core seat body 1 and is radially positioned.

[0032] The outer periphery of the mold core seat body 1 is provided with a body limiting end face 11, and the interior of the mold core seat fixing ring 2 is provided with a fixing ring limiting end face 21. Based on the cooperation between the body limiting end face 11 and the fixing ring limiting end face 21, the mold core seat fixing ring 2 is axially positioned.

[0033] A positioning element 3 is configured between the mold core base body 1 and the mold core base fixing ring 2 to restrict circumferential relative rotation, thereby positioning the mold core base fixing ring 2 circumferentially.

[0034] This embodiment sets the mold core holder as two separate components: the mold core holder body 1 and the mold core holder fixing ring 2. The mold core holder fixing ring 2 is made into a standard part. For different mold core holders, only different mold core holder bodies 1 need to be replaced. There is no need to process each mold core holder fixing ring 2, which can save a lot of materials and reduce processing costs. At the same time, there is no need to process a lot of mounting holes on the mold core holder fixing ring 2, reducing the processing steps and improving the processing efficiency of the mold core holder.

[0035] In a preferred embodiment, the outer periphery of the mold core base body 1 includes a sleeve flange 12 and a mold core base body 13 arranged sequentially, with a body limiting end face 11 formed between the sleeve flange 12 and the mold core base body 13; the mold core base fixing ring 2 has an axially penetrating sleeve hole, including a flange sleeve hole 22 adapted to the sleeve flange 12 and an outer periphery sleeve hole 23 adapted to the mold core base body 13, with a fixing ring limiting end face 21 formed between the flange sleeve hole 22 and the outer periphery sleeve hole 23. During installation, the flange sleeve hole 22 is sleeved on the outer periphery of the sleeve flange 12, and the outer periphery sleeve hole 23 is sleeved on the outer periphery of the mold core base body 13. The body limiting end face 11 and the fixing ring limiting end face 21 abut against each other, thereby achieving axial positioning between the mold core base body 1 and the mold core base fixing ring 2. Furthermore, the end face of the mold core base body 1 near the body limiting end face 11 is the first end face 121; the two end faces of the mold core base fixing ring 2 are the second end face 24 and the third end face 25 in sequence along the direction from the first end face 121 to the body limiting end face 11, that is, the second end face 24 is the outer end face of the mold core base fixing ring 2. Preferably, after the mold core base body 1 and the mold core base fixing ring 2 are installed, the first end face 121 and the second end face 24 are flush.

[0036] In a preferred embodiment, the mold core base body 1 has an axially penetrating mounting hole inside; wherein, the mounting hole includes a mold core mounting hole 14 and a mold lip mating hole 16 arranged in sequence; or, the mounting hole includes a mold core mounting hole 14, a mold core sleeve mounting hole 15 and a mold lip mating hole 16 arranged in sequence.

[0037] As a preferred embodiment, the circumferential positioning structure between the mold core body 1 and the mold core fixing ring 2 is as follows: the mold core body 1 has a first body positioning hole 17, which extends from the first end face 121 along a direction parallel to the axis to the body limiting end face 11; the mold core fixing ring 2 has a first fixing ring positioning hole 26, which extends from the fixing ring limiting end face 21 along a direction parallel to the axis to the third end face 25; after the fixing ring limiting end face 21 contacts the body limiting end face 11, the mold core fixing ring 2 is rotated to the position corresponding to the first fixing ring positioning hole 26 and the first body positioning hole 17, and then the positioning member 3 sequentially cooperates with the first body positioning hole 17 and the first fixing ring positioning hole 26 to perform circumferential positioning of the mold core fixing ring 2 sleeved on the outer periphery of the mold core body 1.

[0038] In a preferred embodiment, the mold core holder fixing ring 2 includes a pair of first side surfaces 27 and a pair of second side surfaces 28 arranged opposite to each other. The side with the shorter distance between the pair of first side surfaces 27 and the pair of second side surfaces 28 is provided with a hollow structure 29. The length of the shorter distance is equal to the diameter of the sleeve flange 12. The outer wall of the sleeve flange 12 is exposed from the hollow structure 29. In this way, the distance between the cavities of the mold can be shortened, thereby increasing the number of mold cavities.

[0039] In a preferred embodiment, the mold core holder fixing ring 2 is provided with a plurality of fixing through holes 20 for fixing the mold core holder. The fixing through holes 20 penetrate the second end face 24 and the third end face 25 of the mold core holder fixing ring 2 in a direction parallel to the axial direction. The plurality of fixing through holes 20 are distributed at the corner positions of the mold core holder fixing ring 2, thereby making the structural distribution more reasonable and improving the space utilization of the mold core holder fixing ring 2. Example 2

[0040] The specific implementation content of this embodiment is largely the same as that of Embodiment 1, with the following differences: Figures 6 to 8 As shown, in the circumferential positioning structure between the mold core seat body 1 and the mold core seat fixing ring 2, specifically, the mold core seat fixing ring 2 has a second fixing ring positioning hole 26', which extends from the outer side wall of the mold core seat fixing ring 2 inward to the flange sleeve hole 22 or the outer peripheral sleeve hole 23; the mold core seat body 1 has a second body positioning hole 17', which extends radially inward from the outer side wall of the sleeve flange 12 or the mold core seat body 13; after the fixing ring limiting end face 21 contacts the body limiting end face 11, the mold core seat fixing ring 2 is rotated to the position corresponding to the second fixing ring positioning hole 26' and the second body positioning hole 17', and then the positioning member 3 sequentially cooperates with the second body positioning hole 17' and the second fixing ring positioning hole 26' to perform circumferential positioning of the mold core seat fixing ring 2 sleeved on the outer periphery of the mold core seat body 1. Example 3

[0041] This embodiment discloses a preform mold, including a plurality of molding components for molding bottle preforms. The molding components include a mold core holder structure for mounting a mold core, which is any of the mold core holder structures described above.

[0042] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A mold core holder structure, characterized in that: It includes a mold core seat body and a mold core seat fixing ring, wherein the mold core seat fixing ring is sleeved on the outer periphery of the mold core seat body and is radially positioned; The outer periphery of the mold core seat body is provided with a body limiting end face, and the interior of the mold core seat fixing ring is provided with a fixing ring limiting end face. Based on the contact fit between the body limiting end face and the fixing ring limiting end face, the mold core seat fixing ring is axially positioned. A positioning element is disposed between the mold core base body and the mold core base fixing ring to restrict circumferential relative rotation, thereby positioning the mold core base fixing ring circumferentially.

2. The mold core holder structure according to claim 1, characterized in that: The outer periphery of the mold core seat body includes a sleeve flange and a mold core seat body arranged sequentially, and the sleeve flange and the mold core seat body form the body limiting end face.

3. The mold core holder structure according to claim 2, characterized in that: The mold core seat fixing ring has an axially penetrating sleeve hole inside. The sleeve hole includes a flange sleeve hole that matches the sleeve flange and an outer peripheral sleeve hole that matches the mold core seat body. The flange sleeve hole and the outer peripheral sleeve hole form the fixing ring limiting end face.

4. A mold core holder structure according to any one of claims 1 to 3, characterized in that: The mold core seat body has a first body positioning hole arranged along the axial direction, and the mold core seat fixing ring has a first fixing ring positioning hole corresponding to the first body positioning hole. The positioning member cooperates with the first body positioning hole and the first fixing ring positioning hole to perform circumferential positioning of the mold core seat fixing ring sleeved on the outer periphery of the mold core seat body.

5. A mold core holder structure according to any one of claims 1 to 3, characterized in that: The mold core seat fixing ring has a second fixing ring positioning hole arranged radially, and the mold core seat body has a second body positioning hole corresponding to the second fixing ring positioning hole. The positioning member cooperates with the second body positioning hole and the second fixing ring positioning hole to perform circumferential positioning of the mold core seat fixing ring sleeved on the outer periphery of the mold core seat body.

6. The mold core holder structure according to claim 1, characterized in that: After the mold core seat body and the mold core seat fixing ring are installed, the end face of the mold core seat body near the limiting end face of the body is flush with the outer end face of the mold core seat fixing ring.

7. The mold core holder structure according to claim 1, characterized in that: The mold core base body has an axially penetrating mounting hole; the mounting hole includes a mold core mounting hole and a mold lip mating hole arranged sequentially.

8. A mold core holder structure according to claim 7, characterized in that: The mounting holes also include mold core sleeve mounting holes, which are located between the mold core mounting holes and the mold lip mating holes.

9. A mold core holder structure according to claim 2, characterized in that: The mold core base fixing ring includes a pair of first side surfaces and a pair of second side surfaces arranged opposite to each other. The side surface with the shorter distance between the pair of first side surfaces and the pair of second side surfaces is provided with a hollow structure. The length of the shorter distance is equal to the diameter of the sleeve flange. The outer wall of the sleeve flange is exposed from the hollow structure.

10. A preform mold, comprising a plurality of molding components for molding preforms, said molding components including a core holder structure for mounting a mold core, characterized in that: The mold core seat structure is the mold core seat structure according to any one of claims 1-9.

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