Water-cooling extrusion mold

Abstract

The utility model discloses a water-cooling extrusion mold. The water-cooling extrusion mold comprises an outer mold and an inner mold nested in the outer mold, water inlet channels and drainage channels are formed in the side walls of the outer mold; the water inlet channel and the water drainage channel are communicated with each other in the outer mold side wall. According to the utility model, the cooling water flowing in the outer mold continuously takes away heat, so that the temperature of the outer mold is maintained at the degree that a fluid material can be stably formed, and the mold does not need to be cooled or replaced, thereby improving the production efficiency and the product quality.

Description

Technical Field

[0001] This utility model relates to the field of extrusion processing technology, and in particular to a water-cooled extrusion mold. Background Technology

[0002] During injection molding, a fluid material heated to a liquid state is injected into the orifices of a mold. The fluid material then cools and solidifies within the mold, forming a plastic part. In traditional injection molding processes, because the mold is made of a metal with good thermal conductivity and is relatively large and heavy, the heat from the fluid material can be dissipated quickly during each injection step, without affecting the molding of the plastic part.

[0003] However, unlike intermittent injection molding, when extrusion is used to produce long, strip-shaped parts such as sound tubes, the mold's inlet continuously receives high-temperature fluid material. As production progresses, the rate at which heat accumulates in the mold exceeds its rate of dissipation, ultimately resulting in the fluid material not cooling sufficiently before being extruded from the mold. This leads to substandard performance and even structural deformation in the resulting plastic parts. Stopping production to allow the mold to cool down or replacing it significantly impacts production efficiency. Utility Model Content

[0004] This utility model discloses a water-cooled extrusion mold, comprising:

[0005] Outer mold 1, and inner mold 2 nested inside the outer mold 1;

[0006] The outer mold 1 has a water inlet channel 11 and a water outlet channel 12 on its side wall;

[0007] The water inlet channel 11 and the water outlet channel 12 are interconnected inside the side wall of the outer mold 1.

[0008] Preferably, the drainage channel 12 has two drainage outlets 122, one on the end surface of the outer mold 1 and the other on the side of the outer mold 1.

[0009] Preferably, the water inlet 11 has a water inlet 111, which is opened on the end surface of the outer mold 1.

[0010] Preferably, for the connected drainage channel 12 and water inlet channel 11, the water inlet channel 11 is located between the inner wall of the outer mold 1 and the drainage channel 12.

[0011] Preferably, the inlet 111 is connected to an external pipeline to inject cooling water into the inlet channel 11.

[0012] Preferably, cooling water flows through the water inlet 11 and carries away the heat of the outer mold 1, and is discharged through the drain outlet 122 of the drainage channel 12.

[0013] Preferably, the top of the outer mold 1 is a feed inlet 13, which is connected to an extruder for feeding high-temperature fluid material.

[0014] Preferably, an annular gap is formed between the outer mold 1 and the inner mold 2 to allow fluid material to be extruded and cooled for molding.

[0015] Preferably, the outer top and outer end of the outer mold 1 are provided with external threads 14 for fixed assembly.

[0016] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0017] The cooling water flowing inside the outer mold continuously removes heat, ensuring that the temperature of the outer mold is maintained at a level where the fluid material can be stably molded. This eliminates the need to wait for the mold to cool down or replace it, thus improving both production efficiency and product quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a water-cooled extrusion mold disclosed in this utility model;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of a water-cooled extrusion mold disclosed in this utility model;

[0021] Figure 3 This is a side view of a water-cooled extrusion mold disclosed in this utility model.

[0022] The main structural symbols are explained in the table below:

[0023] Outer mold 1 Inlet 11 Inlet 111 Drainage 12 Drain 122 Inlet 13 external thread 14 Internal mold 2 Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-3The water-cooled extrusion mold may include the following:

[0026] Outer mold 1, and inner mold 2 nested inside outer mold 1;

[0027] A water inlet channel 11 and a drainage channel 12 are provided on the side wall of the outer mold 1;

[0028] The water inlet channel 11 and the drainage channel 12 are interconnected inside the side wall of the outer mold 1.

[0029] Here, the cooling water flowing inside the outer mold continuously removes heat, ensuring that the temperature of the outer mold is maintained at a level where the fluid material can be stably molded. This eliminates the need to wait for the mold to cool down or replace it, thus improving both production efficiency and product quality.

[0030] In this embodiment, the drainage channel 12 has two drainage outlets 122, one of which is opened on the end surface of the outer mold 1 and the other is opened on the side of the outer mold 1.

[0031] In this embodiment, the water inlet 11 has a water inlet 111, which is opened on the end surface of the outer mold 1.

[0032] In this embodiment, for the connected drainage channel 12 and water inlet channel 11, the water inlet channel 11 is located between the inner wall of the outer mold 1 and the drainage channel 12.

[0033] In this embodiment, the inlet 111 is connected to an external pipeline to inject cooling water into the inlet channel 11.

[0034] In this embodiment, cooling water flows through the inlet channel 11 and carries away the heat of the outer mold 1, and is discharged through the drain outlet 122 of the drain channel 12.

[0035] Here, the coolant with the lowest temperature is injected from the end of the outer mold, which is far from the feed port. At this time, the fluid material has been cooled by the earlier injected coolant and gradually formed. Meanwhile, the low-temperature coolant gradually absorbs the heat of the outer mold and gradually heats up during the flow process, while cooling the fluid material with a higher temperature that is extruded later.

[0036] The above water channel design avoids the lowest temperature cooling water directly cooling the highest temperature fluid material. Instead, the gradually warming cooling water carries away the heat from the mold at the highest temperature, thus preventing structural defects caused by rapid temperature changes as soon as the fluid material is squeezed into the mold.

[0037] In this embodiment, the top of the outer mold 1 is the inlet 13, which is connected to the extruder to supply high-temperature fluid material.

[0038] In this embodiment, an annular gap is formed between the outer mold 1 and the inner mold 2 to allow fluid material to be extruded and cooled for molding.

[0039] In this embodiment, the outer top and outer end of the outer mold 1 are provided with external threads 14 for fixed assembly.

[0040] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0041] The cooling water flowing inside the outer mold continuously removes heat, ensuring that the temperature of the outer mold is maintained at a level where the fluid material can be stably molded. This eliminates the need to wait for the mold to cool down or replace it, thus improving both production efficiency and product quality.

Claims

1. A water-cooled extrusion die characterized by, Comprising: An outer mold (1), and an inner mold (2) nested inside the outer mold (1); The outer mold (1) side wall is provided with a water inlet channel (11) and a water outlet channel (12); The water inlet channel (11) and the water outlet channel (12) are communicated with each other inside the outer mold (1) side wall.

2. A water-cooled plasticating die according to claim 1 wherein, Comprising: The water outlet channel (12) is provided with two water outlet openings (122), one is opened on the end surface of the outer mold (1), and the other is opened on the side surface of the outer mold (1).

3. A water-cooled plasticating die according to claim 2 wherein, Comprising: The water inlet channel (11) is provided with a water inlet opening (111), which is opened on the end surface of the outer mold (1).

4. A water cooled extrusion die according to claim 3 wherein, Comprising: For the communicated water outlet channel (12) and water inlet channel (11), the water inlet channel (11) is located between the inner wall of the outer mold (1) and the water outlet channel (12).

5. A water cooled extrusion die according to claim 4 wherein, Comprising: The water inlet opening (111) is connected with external pipeline to inject cooling water into the water inlet channel (11).

6. A water cooled extrusion die according to claim 5 wherein, Comprising: The cooling water flows through the water inlet channel (11) and takes away the heat of the outer mold (1), and is discharged through the water outlet opening (122) of the water outlet channel (12).

7. A water cooled extrusion die according to claim 1 wherein, Comprising: The top end of the outer mold (1) is a material inlet (13) connected with an extruder for inputting high-temperature fluid material.

8. A water cooled extrusion die according to claim 7, wherein Comprising: The annular gap between the outer mold (1) and the inner mold (2) is used for extruding and cooling the fluid material.

9. A water cooled plasticating die according to claim 1 wherein, Comprising: The outer thread (14) is provided on the top end outside and the end outside of the outer mold (1) for fixed assembly.

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