Die cavity bottom with octagonal cooling water channel, forming assembly and blank injection die

Abstract

The utility model discloses a mold cavity bottom with an octagonal cooling water channel, a forming assembly and a blank injection mold. The mold cavity bottom with the octagonal cooling water channel comprises a mold cavity bottom body; a mold cavity bottom forming area, a pouring channel and a mold cavity injection section are sequentially arranged in the mold cavity bottom body in the axial direction. A cooling water channel surrounding the outer sides of the mold cavity bottom forming area and the pouring channel is also arranged in the mold cavity bottom body; the cooling water channel comprises eight cooling channels which are sequentially connected into a ring; a water inlet hole and a water outlet hole which extend inwards are oppositely formed in the periphery of the die cavity bottom body, and the water inlet hole and the water outlet hole are both communicated with the cooling water channel; the cooling uniformity of each position of the molding area at the bottom of the mold cavity is improved, a more ideal cooling effect is achieved, and the molding effect of a bottle blank is ensured; similarly, the cooling effect of each position of the cooling water channel is approximately equal to that of the pouring channel, so that the cooling uniformity of the pouring channel is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling water channels at the bottom of a mold cavity, and in particular relates to a mold cavity bottom with an octagonal cooling water channel, a molding component and an injection mold. Background Art

[0002] The main function of the cooling water channel at the bottom of the mold cavity is to introduce a cooling medium into the cooling water channel at the bottom of the mold cavity, and the cooling medium flows through the cooling water channel at the bottom of the mold cavity, taking away the heat from the mold cavity bottom molding area and the pouring channel in the mold cavity bottom body, thereby cooling the mold cavity bottom molding area and the pouring channel. In the existing cooling water channel structure at the bottom of the mold cavity, as shown in the Chinese patent document with patent application number 201720166000.8 and patent name "A dual independent cooling water channel structure for a multi-cavity injection mold", the cooling water channel is a hexagonal structure, and the distances between various parts of the cooling water channel and the mold cavity bottom molding area vary greatly. In the mold cavity bottom molding area, the cooling effect is poor at a distance from the cooling water channel, and the cooling effect is good at a distance from the cooling water channel. Therefore, the cooling uniformity of the cooling water channel at the bottom of the mold cavity in this structure is poor. In the existing mold cavity bottom, as shown in the Chinese patent document with patent application number 202220957478.3 and patent name "Mold cavity bottom structure, molding component and injection mold", its cooling water channel is also a hexagonal structure, the cooling uniformity of the mold cavity bottom is poor, and it is difficult to meet the higher cooling requirements. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a mold cavity bottom with an octagonal cooling water channel, a molding component and an injection mold.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A mold cavity bottom with an octagonal cooling water channel comprises a mold cavity bottom body; the interior of the mold cavity bottom body is provided with a mold cavity bottom molding area, a pouring channel and a mold cavity injection section arranged in sequence along the axial direction; the interior of the mold cavity bottom body is also provided with a cooling water channel surrounding the mold cavity bottom molding area and the outside of the pouring channel; the cooling water channel comprises eight cooling channels connected in sequence to form a ring; the outer periphery of the mold cavity bottom body is relatively provided with water inlet holes and water outlet holes extending inwardly, and the water inlet holes and the water outlet holes are both connected to the cooling water channel.

[0006] In the utility model, the cooling water channel is in a regular octagonal structure.

[0007] In the utility model, the outflow end of the water inlet hole and the inflow end of the water outlet hole are respectively located in two oppositely arranged cooling channels.

[0008] In the utility model, the outflow end of the water inlet hole and the inflow end of the water outlet hole are both located in the middle of the corresponding cooling channel.

[0009] In the utility model, the mold cavity bottom body includes a first cooling section, a second cooling section and a connecting section which are sequentially arranged along the axial direction; the first cooling section is sequentially provided with an annular depression, an annular flange and an annular groove of the mold cavity bottom along the axial direction; a connecting groove is provided on the annular flange, and the annular depression of the mold cavity bottom is connected with the annular groove through the connecting groove.

[0010] In the utility model, the cooling water channel corresponds to the second cooling section, a water inlet groove is provided on the outer periphery of the second cooling section, and the annular groove, the water inlet groove and the water inlet hole are connected in sequence.

[0011] In the utility model, the water inlet hole extends from the bottom of the water inlet groove to the cooling water channel.

[0012] In the utility model, a sealing groove is provided on the outer periphery of the connecting section, and a sealing ring is arranged in the sealing groove.

[0013] Based on the mold cavity bottom with a regular octagonal cooling water channel provided by the utility model, the utility model also provides a technical solution for a molding component, including a mold core, a mold lip, a mold cavity and the above-mentioned mold cavity bottom, wherein the mold core, the mold lip, the mold cavity and the mold cavity bottom are configured to restrict the molding of at least part of the molded product; the mold cavity is provided with a mold cavity cooling groove located on the periphery and a mold cavity annular recess located on the periphery of the bottom, and the mold cavity cooling groove is connected to the mold cavity annular recess; the mold cavity bottom annular recess of the mold cavity bottom and the mold cavity annular recess of the mold cavity together constitute an annular cooling water groove.

[0014] Based on the molding components provided above, the utility model also provides a technical solution for an injection mold, including a cavity plate and a plurality of the above-mentioned molding components, wherein the cavity and the cavity bottom of the molding components are installed on the cavity plate; the cavity plate is provided with an inlet channel and an outflow channel, the inlet channel is directly or indirectly connected to the entrance end of the cavity cooling groove, and the outflow channel is directly or indirectly connected to the water outlet hole of the cavity bottom.

[0015] The beneficial effects of the utility model are as follows: by setting an octagonal cooling water channel in the mold cavity bottom body, the distance between each position of the cooling water channel and the molding area of ​​the mold cavity bottom is roughly equal, thereby improving the cooling uniformity of each position of the molding area of ​​the mold cavity bottom, achieving a more ideal cooling effect, and ensuring the molding effect of the bottle blank; similarly, the cooling effect of each position of the cooling water channel and the pouring channel is roughly equal, so that the cooling uniformity of the pouring channel is improved. In addition, by relatively setting water inlet holes and water outlet holes on the periphery of the mold cavity bottom body, the cooling medium enters the cooling water channel from the water inlet hole, flows from the two halves of the cooling water channel respectively, and then enters the water outlet hole to merge and then flows out of the mold cavity bottom body; in this process, the cooling medium flows through the two halves of the cooling water channel for an equal distance, thereby further improving the uniformity of the cooling of the mold cavity bottom body by the cooling water channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the internal structure of the mold cavity bottom of this embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of the cooling water channel of this embodiment;

[0018] Figure 3 Schematic diagram of the external structure of the bottom of the mold cavity in this embodiment;

[0019] Figure 4 Schematic diagram of another external structure of the mold cavity bottom of this embodiment. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 4As shown, the present embodiment discloses a mold cavity bottom with an octagonal cooling water channel, comprising a mold cavity bottom body 1; the interior of the mold cavity bottom body 1 is provided with a mold cavity bottom molding area 11, a pouring channel 12 and a mold cavity injection section 13 which are sequentially arranged along the axial direction; the interior of the mold cavity bottom body 1 is also provided with a cooling water channel 14, and the cooling water channel 14 is arranged around the outer side of the mold cavity bottom molding area 11 and the pouring channel 12; the cooling water channel 14 includes eight cooling channels, and the eight cooling channels are sequentially connected to form a ring-shaped cooling water channel 14; the outer periphery of the mold cavity bottom body 1 is provided with a water inlet hole 15 and a water outlet hole 16 which extend inwardly and are connected to the cooling water channel 14, and the water inlet hole 15 and the water outlet hole 16 are arranged opposite to each other. In the mold cavity bottom of this embodiment, by setting an octagonal cooling water channel 14 in the mold cavity bottom body 1, the distance between each position of the cooling water channel 14 and the mold cavity bottom molding area 11 is roughly equal, thereby improving the cooling uniformity of each position of the mold cavity bottom molding area 11, achieving a more ideal cooling effect, and ensuring the molding effect of the bottle blank; similarly, the cooling effect of each position of the cooling water channel 14 and the pouring channel 12 is roughly equal, so that the cooling uniformity of the pouring channel 12 is improved. In addition, by relatively setting water inlet holes 15 and water outlet holes 16 on the periphery of the mold cavity bottom body 1, the cooling medium enters the cooling water channel 14 from the water inlet hole 15, flows from the two halves of the cooling water channel 14 respectively, and then enters the water outlet hole 16 to merge and then flows out of the mold cavity bottom body 1. In this process, the distance of the cooling medium flowing through the two halves of the cooling water channel 14 is equal, thereby further improving the uniformity of the cooling of the mold cavity bottom body 1 by the cooling water channel 14.

[0022] As a preferred embodiment, the eight cooling channels are of equal length, and the angles between adjacent cooling channels are all 135°, so that the cooling channel 14 has a regular octagonal structure, further improving the uniformity of the cooling of the mold cavity bottom body 1 by the cooling channel 14 .

[0023] As a preferred embodiment, the outflow end of the water inlet 15 and the inflow end of the water outlet 16 are respectively located in two oppositely arranged cooling channels; the outflow end of the water inlet 15 and the inflow end of the water outlet 16 are both located in the middle of the corresponding cooling channel.

[0024] In this embodiment, the cooling water channel 14 in the mold cavity bottom body 1 can be manufactured by machining or additive manufacturing. When the cooling water channel 14 in the mold cavity bottom body 1 is manufactured by machining, eight cooling channels are machined one by one by drilling holes inward from the outer circumference of the mold cavity bottom body 1, and then the eight cooling channels are blocked at the opening ends corresponding to the outer circumference of the mold cavity bottom body 1 using plugs, thereby forming the cooling water channel 14. When the cooling water channel 14 in the mold cavity bottom body 1 is manufactured by additive manufacturing, it is manufactured and formed according to the structural design of the cooling water channel 14, and will not be described in detail here.

[0025] In this embodiment, the mold cavity bottom body 1 is provided with a first cooling section 17, a second cooling section 18 and a connecting section 19 which are arranged in sequence along the axial direction. The outer periphery of the first cooling section 17 is provided with a mold cavity bottom annular recess 171, an annular flange 172 and an annular groove 173 which are arranged in sequence along the axial direction. The mold cavity bottom annular recess 171, the annular flange 172 and the annular groove 173 are all arranged around the outer side of the mold cavity bottom molding area 11; the mold cavity bottom annular recess 171 of the mold cavity bottom body 1 is combined with the mold cavity annular recess of the mold cavity to form an annular cooling water trough, which is used to cool the mold cavity bottom molding area 11.

[0026] In this embodiment, a connecting groove 174 is formed on the annular flange 172 , and the annular recess 171 at the mold cavity bottom is connected to the annular groove 173 via the connecting groove 174 ; the annular groove 173 is used to cool the molding area 11 at the mold cavity bottom.

[0027] In this embodiment, the cooling water channel 14 is arranged inside the second cooling section 18, and a water inlet groove 181 is arranged on the outer periphery of the second cooling section 18, and the annular groove 173 is connected to the water inlet hole 15 through the water inlet groove 181. Preferably, the position of the water inlet groove 181 corresponds to the water inlet hole 15, and the water inlet hole 15 extends from the inside of the water inlet groove 181 to the inside of the mold cavity bottom body 1, and is connected to the cooling water channel 14. The cooling medium of the mold cavity enters the annular cooling water groove formed by the annular depression 171 at the bottom of the mold cavity and the annular depression of the mold cavity, and the cooling medium in the annular cooling water groove enters the annular groove 173 through the connecting groove 174, and the cooling medium in the annular groove 173 enters the water inlet hole 15 through the water inlet groove 181, and enters the cooling water channel 14 through the water inlet hole 15, and the cooling medium in the cooling water channel 14 finally flows out from the water outlet hole 16.

[0028] In this embodiment, a sealing groove 191 is provided on the outer periphery of the connecting section 19, and a sealing ring is arranged in the sealing groove 191, so that the bottom of the mold cavity has a better sealing effect after installation.

[0029] Based on the mold cavity bottom with an octagonal cooling water channel 14 disclosed in the above embodiment, this embodiment also discloses a molding assembly, including a mold core, a mold lip, a mold cavity and the above mold cavity bottom, the mold lip, the mold cavity and the mold cavity bottom are connected in sequence, one end of the mold core enters from the mold lip, passes through the mold cavity and extends to the mold cavity bottom, and the mold core, the mold lip, the mold cavity and the mold cavity bottom are configured to restrict the molding of at least part of the molded product. The mold cavity is provided with a mold cavity cooling groove located on the periphery and a mold cavity annular depression located on the periphery of the bottom, and the mold cavity cooling groove is connected to the mold cavity annular depression; the mold cavity bottom annular depression 171 of the mold cavity bottom body 1 is combined with the mold cavity annular depression of the mold cavity to form an annular cooling water groove.

[0030] Based on the molding components disclosed in the above embodiments, the present embodiment further discloses an injection mold, including a cavity plate and a plurality of the above-mentioned molding components, the cavity and cavity bottom of the molding components are installed on the cavity plate, the cavity plate is provided with an inlet channel and an outflow channel, the inlet channel is directly or indirectly connected to the entrance end of the cavity cooling groove, and the outflow channel is directly or indirectly connected to the water outlet hole 16 at the bottom of the cavity.

[0031] 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 mold cavity bottom with an octagonal cooling water channel, comprising a mold cavity bottom body; the mold cavity bottom body is provided with a mold cavity bottom molding area, a pouring channel and a mold cavity injection section arranged in sequence along the axial direction; the mold cavity bottom body is also provided with a cooling water channel surrounding the mold cavity bottom molding area and the outside of the pouring channel; Features: The cooling water channel comprises eight cooling channels connected in sequence to form a ring; the outer periphery of the mold cavity bottom body is relatively provided with water inlet holes and water outlet holes extending inwardly, and the water inlet holes and the water outlet holes are both connected to the cooling water channel.

2. The mold cavity bottom with octagonal cooling water channels according to claim 1, Features: The cooling water channel is in a regular octagonal structure.

3. The mold cavity bottom with octagonal cooling water channels according to claim 1, Features: The outflow end of the water inlet hole and the inflow end of the water outlet hole are respectively located in two oppositely arranged cooling channels.

4. The mold cavity bottom with octagonal cooling water channels according to claim 3, Features: The outflow end of the water inlet hole and the inflow end of the water outlet hole are both located in the middle of the corresponding cooling channel.

5. The mold cavity bottom with octagonal cooling water channels according to claim 1, Features: The mold cavity bottom body includes a first cooling section, a second cooling section and a connecting section arranged in sequence along the axial direction, and the first cooling section is provided with a mold cavity bottom annular depression, an annular flange and an annular groove in sequence along the axial direction; the annular flange is provided with a connecting groove, and the mold cavity bottom annular depression is connected to the annular groove through the connecting groove.

6. The mold cavity bottom with octagonal cooling water channels according to claim 5, Features: The cooling water channel corresponds to the second cooling section. A water inlet groove is arranged on the outer periphery of the second cooling section. The annular groove, the water inlet groove and the water inlet hole are connected in sequence.

7. The mold cavity bottom with octagonal cooling water channels according to claim 6, Features: The water inlet hole extends from the bottom of the water inlet groove to the cooling water channel.

8. The mold cavity bottom with octagonal cooling water channels according to claim 5, Features: A sealing groove is arranged on the outer periphery of the connecting section, and a sealing ring is arranged in the sealing groove.

9. Molding components, Features: It includes a mold core, a mold lip, a mold cavity and the mold cavity bottom described in any one of claims 1-8, wherein the mold core, the mold lip, the mold cavity and the mold cavity bottom are configured to limit the molding of at least part of the molded product; the mold cavity is provided with a mold cavity cooling groove located on the periphery and a mold cavity annular recess located on the periphery of the bottom, and the mold cavity cooling groove is connected to the mold cavity annular recess; the mold cavity bottom annular recess of the mold cavity bottom and the mold cavity annular recess of the mold cavity together constitute an annular cooling water trough.

10. Injection mold, Features: It comprises a cavity plate and a plurality of molding components as claimed in claim 9, wherein the cavity and cavity bottom of the molding components are mounted on the cavity plate; the cavity plate is provided with an inlet channel and an outlet channel, the inlet channel is directly or indirectly connected to the inlet end of the cavity cooling groove, and the outlet channel is directly or indirectly connected to the water outlet hole of the cavity bottom.

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