A mold core cooling pipe and mold core structure

Abstract

A core cooling tube and core structure, including a core and a core cooling tube, wherein the core cooling tube is inserted into the inner cavity of the core for cooperative installation, one end of the cooling tube body is a preform cooling section, including a body cooling section, a neck cooling section and a mouth cooling section connected in sequence along the axial direction, the outer wall of the neck cooling section is provided with a plurality of first positioning bosses protruding outward, a plurality of the first positioning bosses are arranged in sequence around the outer wall of the neck cooling section, and at least part of the first positioning bosses abut against the inner cavity wall of the core. The utility model provides a first positioning boss on the neck cooling section, so that the first positioning boss abuts against the inner cavity of the core to achieve the positioning of the middle section of the preform cooling section, thereby providing a more ideal centering positioning effect for the preform cooling section, ensuring the combined installation quality of the core cooling tube in the core, thereby achieving the purpose of improving the quality of cooling water flow, and forming a strong guarantee for the cooling quality of the preform.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle blank molding, in particular to a mold core cooling pipe and a mold core structure. Background Art

[0002] Existing preform injection molds usually cool the preforms by forming a circulating cooling channel through a mold core and a mold core cooling tube.

[0003] For example, the Chinese patent with publication number CN217021104U previously proposed by the applicant discloses a core cooling tube, a core structure and a molding assembly, wherein the core cooling tube includes a cooling tube body and a cooling channel for the circulation of a cooling medium, the cooling channel is provided in the cooling tube body, the cooling tube body includes a body cooling section corresponding to the body molding part of the preform, and the cooling channel includes a body cooling channel provided corresponding to the body cooling section. The outer wall of the body cooling section is provided with a plurality of positioning bosses protruding outward, the positioning bosses surround the outer wall of the body cooling section, and during assembly, the positioning bosses always position the cooling end of the core cooling tube in the center of the inner cavity of the core, so that the core cooling tube can be quickly assembled and positioned.

[0004] One end of the mold core cooling tube is a preform cooling section, including a preform body cooling section, a preform neck cooling section and a preform mouth cooling section. In the prior art, a positioning boss is usually arranged on the preform body cooling section and / or the preform mouth cooling section, and the positioning boss abuts against the inner wall of the mold core to make the preform cooling section centrally located in the mold core; however, the preform body cooling section and / or the preform mouth cooling section is not the middle section of the preform cooling section (i.e., the preform neck cooling section). Compared with arranging the positioning boss on the middle section, arranging the positioning boss on the non-middle section does not have as ideal a centering effect on the preform cooling section. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a mold core cooling pipe and a mold core structure.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A core cooling tube comprises a cooling tube body, one end of which is a preform cooling section, comprising a body cooling section, a neck cooling section and a mouth cooling section which are sequentially connected along the axial direction, and is characterized in that a plurality of first positioning bosses protruding outward are provided on an outer wall of the neck cooling section, and the plurality of first positioning bosses are sequentially arranged around the outer wall of the neck cooling section.

[0008] In the present invention, the first positioning boss includes a boss top surface and a boss side surface, and the boss top surface is parallel to the outer wall of the billet neck cooling section.

[0009] Each edge of the top surface of the boss is connected to the outer wall of the billet neck cooling section through the side surfaces of the boss.

[0010] In the present invention, the margin D of the top surface of the boss gradually increases along the extension direction L of the billet neck cooling section.

[0011] In the present invention, the top surface of the boss is an isosceles triangle, and the symmetry axis of the isosceles triangle is parallel to the extension direction L; or the top surface of the boss is an isosceles trapezoid, and the symmetry axis of the isosceles trapezoid is parallel to the extension direction L.

[0012] In the utility model, the side surface of the boss is an inclined surface or a curved surface.

[0013] In the utility model, the outer wall of the blank cooling section is provided with a plurality of second positioning bosses protruding outward, and the plurality of second positioning bosses are sequentially arranged around the outer wall of the blank cooling section.

[0014] In the present invention, a plurality of the second positioning bosses are aligned with a plurality of the first positioning bosses; or a plurality of the second positioning bosses are staggered with a plurality of the first positioning bosses.

[0015] In the utility model, the outer wall of the billet cooling section is provided with a plurality of third positioning bosses protruding outward, and the plurality of third positioning bosses are sequentially arranged around the outer wall of the billet cooling section.

[0016] In the present invention, the plurality of third positioning bosses are aligned or staggered with the plurality of first positioning bosses; or the plurality of third positioning bosses are aligned or staggered with the plurality of second positioning bosses.

[0017] Based on the core cooling tube provided above, the utility model also provides a core structure, including a core and the core cooling tube mentioned above, wherein the core cooling tube is inserted into the inner cavity of the core for cooperative installation, and at least part of the first positioning boss abuts against the inner cavity wall of the core.

[0018] The beneficial effects of the utility model: the bottle blank cooling section of the utility model comprises a blank body cooling section, a blank neck cooling section and a blank mouth cooling section which are connected in sequence along the axial direction, wherein the blank neck cooling section is the middle section of the bottle blank cooling section, and the first positioning boss is arranged on the blank neck cooling section, so that the first positioning boss is abutted against the inner cavity of the mold core to realize the positioning of the middle section of the bottle blank cooling section, thereby providing a more ideal centering positioning effect for the bottle blank cooling section, ensuring the assembly installation quality of the mold core cooling pipe in the mold core, thereby achieving the purpose of improving the quality of cooling water flow, and forming a strong guarantee for the cooling quality of the bottle blank. In addition, a second positioning boss is arranged on the outer wall of the blank body cooling section and a third positioning boss is arranged on the outer wall of the blank mouth cooling section, so that the second positioning boss and the third positioning boss are used to position the blank body cooling section and the blank mouth cooling section respectively, so that the bottle blank cooling section can achieve the effect of three-section positioning, so that the bottle blank cooling section can achieve a more ideal centering positioning effect, thereby improving the quality of cooling water flow and ensuring the cooling quality of the bottle blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 The top surface of the first positioning boss is an isosceles triangle. Figure 1 ;

[0021] Figure 2 The top surface of the first positioning boss is an isosceles triangle. Figure 2 ;

[0022] Figure 3 A schematic diagram of the structure in which the top surface of the first positioning boss is an isosceles trapezoid;

[0023] Figure 4 A schematic diagram of a structure in which the first positioning boss, the second positioning boss and the third positioning boss are aligned and distributed;

[0024] Figure 5 It is a schematic diagram of the structure in which the third positioning bosses and the first positioning bosses are staggeredly distributed;

[0025] Figure 6 It is a schematic diagram of the combination of the core cooling tube and the core. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] Reference Figure 1 The present embodiment discloses a core cooling tube, comprising a cooling tube body 1, wherein a cooling channel 10 is arranged in the cooling tube body 1, and the cooling channel 10 penetrates both ends of the cooling tube body 1 along the axial direction of the cooling tube body 1; one end of the cooling tube body 1 is a preform cooling section, comprising a preform cooling section 11, a preform neck cooling section 12 and a preform mouth cooling section 13 connected in sequence along the axial direction, wherein the left end of the preform neck cooling section 12 is connected to the preform mouth cooling section 13, and the right end is connected to the preform cooling section 11.

[0030] Furthermore, the outer wall of the billet neck cooling section 12 is provided with a plurality of first positioning bosses 121 protruding outwards, and the plurality of first positioning bosses 121 are sequentially arranged around the outer wall of the billet neck cooling section 12 , and the first positioning bosses 121 are used for abutting and positioning against the inner wall of the mold core.

[0031] As a preferred embodiment, Figure 2 As shown, the first positioning boss 121 includes a boss top surface 1211 and a boss side surface 1212, the boss top surface 1211 is parallel to the outer wall of the billet neck cooling section 12, each edge of the boss top surface 1211 is respectively connected to a boss side surface 1212, and each edge of the boss top surface 1211 is connected to the outer wall of the billet neck cooling section 12 through the boss side surface 1212, so that the boss top surface 1211 and the boss side surface 1212 are combined to form the first positioning boss 121 located on the outer wall of the billet neck cooling section 12.

[0032] Furthermore, the margin D of the boss top surface 1211 gradually increases along the extension direction L of the billet neck cooling section 12. This structure enables the boss side surface 1212 to form a guide surface after the boss side surface 1212 is connected to the boss top surface 1211, thereby better guiding the cooling water and reducing the flow rate change of the cooling water when it flows through the first positioning boss 121. For example, the boss top surface 1211 is an isosceles triangle, and the symmetry axis of the isosceles triangle is parallel to the extension direction L, such as Figure 2 Alternatively, the boss top surface 1211 is an isosceles trapezoid, and the symmetry axis of the isosceles trapezoid is parallel to the extension direction L, as shown in FIG. Figure 3 shown.

[0033] As a preferred embodiment, the boss side 1212 is a slope or an arc surface. In the present embodiment, the boss side 1212 is preferably an arc surface. For the boss top surface 1211 of an isosceles triangle or an isosceles trapezoid, it is better to use an arc surface connection between its bottom edge and the outer wall of the billet neck cooling section 12. The arc surface can be a concave arc surface or a convex arc surface, which is specifically set according to production needs, and a concave arc surface is preferred. The present embodiment adopts an arc surface connection. Compared with the slope surface connection, the arc surface connection can be easier and more convenient to process. At the same time, because the arc surface has a curvature, it is easy to leave a gap for cooling water to pass through, thereby avoiding the formation of a dead water area between the inner wall of the mold core.

[0034] As a preferred embodiment, the outer wall of the blank cooling section 11 is provided with a plurality of second positioning bosses 111 protruding outward, and the plurality of second positioning bosses 111 are arranged in sequence around the outer wall of the blank cooling section 11, and the second positioning bosses 111 are used to cooperate with the inner cavity of the mold core for positioning, thereby improving the positioning quality of the blank cooling section 11 in the inner cavity of the mold core.

[0035] Furthermore, the plurality of second positioning bosses 111 are aligned with the plurality of first positioning bosses 121, such as Figure 4 As shown, by aligning the first positioning boss 121 and the second positioning boss 111, the cooling water can be better guided, and the change in the flow rate of the cooling water when it flows through the first positioning boss 121 and the second positioning boss 111 can be reduced. In addition, in other embodiments, a plurality of the second positioning bosses 111 and a plurality of the first positioning bosses 121 can be staggered, and the flow direction of the cooling water can be changed by staggered second positioning bosses 111 and first positioning bosses 121, so that the flow of the cooling water is more uniform, and a more uniform cooling effect of the preform is achieved, thereby ensuring the cooling quality of the preform.

[0036] As a preferred embodiment, the outer wall of the billet cooling section 13 is provided with a plurality of third positioning bosses 131 protruding outward, and the plurality of third positioning bosses 131 are arranged in sequence around the outer wall of the billet cooling section 13, and the third positioning bosses 131 are used to cooperate with the inner cavity of the mold core for positioning, thereby improving the positioning quality of the billet cooling section 13 in the inner cavity of the mold core.

[0037] Furthermore, the plurality of third positioning bosses 131 are aligned or staggered with the plurality of first positioning bosses 121. The schematic diagram of the alignment of the plurality of third positioning bosses 131 with the plurality of first positioning bosses 121 can be referred to in Figure 4 The schematic diagram of the staggered distribution of the plurality of third positioning bosses 131 and the plurality of first positioning bosses 121 can be referred to Figure 5 Alternatively, the plurality of third positioning bosses 131 are aligned or staggered with the plurality of second positioning bosses 111.

[0038] In the above structure, by aligning the first positioning boss 121, the second positioning boss 111 and the third positioning boss 131, the cooling water can be better guided and the change in flow rate of the cooling water when it flows through different positioning bosses can be reduced; and the staggered distribution between the first positioning boss 121, the second positioning boss 111 and the third positioning boss 131 can change the flow direction of the cooling water, making the flow of the cooling water more uniform, achieving a more uniform bottle blank cooling effect, and ensuring the cooling quality of the bottle blank.

[0039] like Figure 6 As shown, based on the above-mentioned core cooling tube, the present embodiment further discloses a core structure, including a core A and the above-mentioned core cooling tube B, the core cooling tube B is inserted into the inner cavity of the core A for cooperative installation, and the core A and the core cooling tube B can be combined in any manner known in the art; further, at least part of the first positioning boss 121 abuts against the inner cavity wall of the core A, specifically, at least part of the boss top surface 1211 of the first positioning boss 121 abuts against the inner cavity wall of the core A, thereby achieving positioning; and the manner in which the second positioning boss 111 and the third positioning boss 131 abut against the inner cavity wall of the core A for positioning is the same as the prior art, so it is not described in detail.

[0040] The utility model realizes three-stage positioning of the preform cooling section by setting the first positioning boss 121, the second positioning boss 111 and the third positioning boss 131, which can achieve a more ideal centering effect on the preform cooling section, thereby improving the quality of cooling water flow and ensuring the cooling quality of the preform.

[0041] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. A core cooling tube, comprising a cooling tube body, one end of which is a preform cooling section, comprising a preform body cooling section, a preform neck cooling section and a preform mouth cooling section sequentially connected in the axial direction, characterized in that: The outer wall of the billet neck cooling section is provided with a plurality of first positioning bosses protruding outward, and the plurality of first positioning bosses are sequentially arranged around the outer wall of the billet neck cooling section.

2. The core cooling tube according to claim 1, characterized in that: The first positioning boss comprises a boss top surface and a boss side surface, and the boss top surface is parallel to the outer wall of the billet neck cooling section. Each edge of the top surface of the boss is connected to the outer wall of the billet neck cooling section through the side surfaces of the boss.

3. The core cooling tube according to claim 2, characterized in that: The margin D of the top surface of the boss gradually increases along the extension direction L of the billet neck cooling section.

4. The core cooling tube according to claim 3, characterized in that: The top surface of the boss is an isosceles triangle, and the symmetry axis of the isosceles triangle is parallel to the extension direction L; or the top surface of the boss is an isosceles trapezoid, and the symmetry axis of the isosceles trapezoid is parallel to the extension direction L.

5. The core cooling tube according to claim 4, characterized in that: The side surface of the boss is an inclined surface or a curved surface.

6. The core cooling tube according to any one of claims 1 to 5, characterized in that: The outer wall of the blank cooling section is provided with a plurality of second positioning bosses protruding outward, and the plurality of second positioning bosses are sequentially arranged around the outer wall of the blank cooling section.

7. The core cooling tube according to claim 6, characterized in that: The plurality of second positioning bosses are aligned with the plurality of first positioning bosses; or the plurality of second positioning bosses are staggered with the plurality of first positioning bosses.

8. The core cooling tube according to claim 6, characterized in that: The outer wall of the billet cooling section is provided with a plurality of third positioning bosses protruding outward, and the plurality of third positioning bosses are sequentially arranged around the outer wall of the billet cooling section.

9. The core cooling tube according to claim 8, characterized in that: The plurality of third positioning bosses are aligned or staggered with the plurality of first positioning bosses; or the plurality of third positioning bosses are aligned or staggered with the plurality of second positioning bosses.

10. A core structure, characterized in that: It comprises a mold core and the mold core cooling tube according to any one of claims 1 to 9, wherein the mold core cooling tube is inserted into the inner cavity of the mold core for cooperative installation, and at least a part of the first positioning boss abuts against the inner cavity wall of the mold core.

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