Plastic injection mold with heat dissipation function

Abstract

The utility model relates to the technical field of plastic injection molds, in particular to a plastic injection mold with a heat dissipation function, which comprises a fixed mold and a movable mold, the fixed mold is a hollow box body, a square groove is arranged in the middle of the rear side of the fixed mold, the movable mold is clamped at the rear part of the fixed mold, and the movable mold is a hollow box body. The cooling circulation mechanism is installed, the water pump pumps hot cooling liquid into the cooling device through the water conveying pipe, after the cooling device cools the cooling liquid, the cooling liquid is added into the fixed mold and the movable mold again through the water inlet pipe, and the mold can be continuously cooled through the cooling circulation mechanism; according to the device, through a closed-loop water cooling circulation technology, it is ensured that heat of the mold is rapidly and evenly guided out, so that the cooling time can be remarkably shortened, the production efficiency is improved, meanwhile, the service life of the mold is prolonged, the comprehensive operation cost is reduced, and the sustainability of production is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic injection molds, and more specifically, to a plastic injection mold with a heat dissipation function. Background Art

[0002] A plastic injection mold is a tool for producing plastic products and is widely used in the manufacturing industry. This mold injects molten plastic into the mold cavity under high temperature and pressure through an injection molding machine, and after cooling and solidifying, it forms the required shape. A plastic injection mold usually consists of two main parts: a moving mold (female mold) and a fixed mold (male mold), which closely cooperate to form the contour of the product.

[0003] In modern manufacturing, especially in industries such as injection molding, extrusion, casting, and forging, the temperature control of the mold is a key factor in ensuring product quality, improving production efficiency, and extending the service life of the mold. Traditional mold cooling methods generally include natural air cooling or spraying coolant on the mold surface for cooling. These two cooling methods are difficult to meet the requirements of efficient and uniform heat dissipation of the mold. Natural air cooling depends on the external air temperature, and the cooling rate is slow, making it difficult to quickly reduce the mold temperature to the ideal level. While the method of spraying coolant can cool down relatively quickly, the cooling effect is not uniform, easily leading to local overcooling or overheating of the mold, affecting the dimensional accuracy and surface quality of the product. Especially when dealing with high heat capacity, high-strength materials or conducting large-scale continuous production, the limitations of these methods are more obvious.

[0004] Therefore, there is an urgent need for a plastic injection mold with a heat dissipation function. Summary of the Utility Model

[0005] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a plastic injection mold with a heat dissipation function.

[0006] The technical solution is as follows: A plastic injection mold with a heat dissipation function includes a fixed mold, a moving mold, an injection pipe, and a cooling circulation mechanism. The fixed mold is a hollow box body, and a square groove is provided in the middle of the rear side of the fixed mold. The moving mold is clamped at the rear of the fixed mold. The moving mold is a hollow box body, and a square protrusion is provided in the middle of the front side of the moving mold. The size of the square groove on the fixed mold is larger than that of the square protrusion on the moving mold. Therefore, there is a cavity with a specific shape between the square groove and the square protrusion. The upper part of the fixed mold is connected with an injection pipe, and the injection pipe is communicated with the cavity. A cooling circulation mechanism is provided on the fixed mold. The cooling circulation mechanism includes a water inlet pipe, a cooling device, a water pump, and a water delivery pipe. The water inlet pipe penetrates through the upper side surface of the fixed mold. The cooling device is installed on the upper side surface of the fixed mold. The water outlet of the cooling device is connected to the water inlet pipe. The water pump is installed on the upper side surface of the fixed mold. The water outlet of the water pump is connected to the water inlet of the cooling device. The left part of the fixed mold is connected with a water delivery pipe, and the water outlet of the water delivery pipe is connected to the water inlet of the water pump. The water outlet of the water delivery pipe is communicated with the inside of the fixed mold.

[0007] Optionally, there are four injection molding pipes, which are evenly distributed on the upper side of the fixed mold in a horizontal line shape, and all four injection molding pipes are communicated with the cavity.

[0008] Optionally, there are two cooling circulation mechanisms, which are respectively arranged on the fixed mold and the movable mold to enhance the cooling efficiency.

[0009] Optionally, it further includes a transparent plate, and transparent plates are connected to both the fixed mold and the movable mold.

[0010] Optionally, it further includes a thermometer, and the thermometer is installed on the right side of the fixed mold.

[0011] Optionally, it further includes a heat conduction rod, the thermometer is connected with the heat conduction rod, and when the fixed mold and the movable mold are clamped, the heat conduction rod is located between the fixed mold and the movable mold.

[0012] The utility model has the following advantages:

[0013] By installing a cooling circulation mechanism in the utility model, the water pump will pump the overheated coolant into the cooling device through the water delivery pipe. After the cooling device cools the coolant, the coolant will be re-added to the inside of the fixed mold and the movable mold through the water inlet pipe. The cooling circulation mechanism can continuously cool the mold. Through the closed-loop water cooling circulation technology, this device ensures that the heat of the mold is quickly and evenly exported. In this way, it can not only significantly shorten the cooling time and improve the production efficiency, but also is beneficial to extending the service life of the mold, reducing the comprehensive operation cost, and enhancing the sustainability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a cross-sectional view of the fixed mold and the movable mold of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the fixed mold, the thermometer and the heat conduction rod of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the movable mold and the components installed on itself of the utility model.

[0018] The meanings of the reference numerals in the drawings: 1: fixed mold, 2: movable mold, 201: injection molding pipe, 202: cavity, 3: water inlet pipe, 4: cooling device, 5: water pump, 6: water delivery pipe, 7: transparent plate, 8: thermometer, 81: heat conduction rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0020] Embodiment: A plastic injection mold with heat dissipation function, such as Figures 1 - 4 As shown, it includes a fixed mold 1, a movable mold 2, an injection molding tube 201 and a cooling circulation mechanism. The fixed mold 1 is a hollow box body. A square groove is provided in the middle of the rear side of the fixed mold 1. The movable mold 2 is clamped at the rear of the fixed mold 1. The movable mold 2 is a hollow box body. A square protrusion is provided in the middle of the front side of the movable mold 2. The size of the square groove on the fixed mold 1 is larger than the square protrusion on the movable mold 2. Therefore, there is a cavity 202 of a specific shape between the square groove and the square protrusion. There are four injection molding tubes 201, which are evenly distributed on the upper side of the fixed mold 1 in a horizontal line shape, and the four injection molding tubes 201 are connected to the cavity 202. The injection molding tube 201 is a funnel shape that is wide at the top and narrow at the bottom. The fixed mold 1 is provided with a cooling Circulation mechanism, there are two cooling circulation mechanisms, which are respectively arranged on the fixed mold 1 and the movable mold 2 to enhance the cooling efficiency. The cooling circulation mechanism includes a water inlet pipe 3, a cooling device 4, a water pump 5 and a water delivery pipe 6. The water inlet pipe 3 is penetrated at the center of the upper side of the fixed mold 1, and the cooling device 4 is installed on the upper side of the fixed mold 1 by bolts. The water outlet of the cooling device 4 is connected to the water inlet pipe 3, and the water pump 5 is installed on the upper side of the fixed mold 1 by bolts. The water outlet of the water pump 5 is connected to the water inlet of the cooling device 4. The left part of the fixed mold 1 is penetrated by a water delivery pipe 6, and the water delivery pipe 6 is L-shaped. One end of the water delivery pipe 6 is connected to the water inlet of the water pump 5, and the other end passes into the interior of the fixed mold 1.

[0021] like Figures 1 - 3 As shown, it also includes a transparent plate 7, a thermometer 8 and a heat-conducting rod 81. The transparent plate 7 is connected to the center of the outside of the fixed mold 1 and the movable mold 2 in a vertical line shape; a thermometer 8 is installed on the upper right side of the fixed mold 1 by bolts; a heat-conducting rod 81 is fixed to the thermometer 8, and when the fixed mold 1 and the movable mold 2 are clamped, the heat-conducting rod 81 is located between the fixed mold 1 and the movable mold 2.

[0022] When the device is to be used, first add the coolant into the fixed mold 1 and the movable mold 2 through the water inlet pipe 3, and fill the internal spaces of both. Through the transparent plate 7, the water level inside the fixed mold 1 and the movable mold 2 can be seen, which can prevent the coolant from overflowing. When the internal spaces of the fixed mold 1 and the movable mold 2 are filled with the coolant, at the same time, inject plastic into the cavity 202 through four injection pipes 201. When the plastic enters the cavity 202, the temperature on the plastic will be transferred to the coolant inside the fixed mold 1 and the movable mold 2 through the inner walls of the fixed mold 1 and the movable mold 2. After absorbing heat, the coolant becomes hot and boils, driving the water pump 5. The water pump 5 will draw the hot coolant inside the fixed mold 1 and the movable mold 2 to the cooling device 4 through the water delivery pipe 6. After the cooling device 4 cools the coolant, it will re-add the coolant to the inside of the fixed mold 1 and the movable mold 2 through the water inlet pipe 3. The cooling circulation mechanism can continuously cool the mold. This device uses the closed-loop water cooling circulation technology to ensure that the heat of the mold is quickly and evenly dissipated. This can not only significantly shorten the cooling time, improve the production efficiency, and improve the quality standard of the final product. At the same time, it is also beneficial to extend the service life of the mold, reduce the comprehensive operation cost, and enhance the sustainability of production; the heat conduction rod 81 can accurately convey the temperature between the fixed mold 1 and the movable mold 2 to the thermometer 8, enabling the operator to judge whether the plastic part has reached the temperature condition for safe demolding according to the data displayed on the thermometer 8. Once the appropriate demolding temperature is monitored, the movable mold 2 can be separated from the fixed mold 1. After taking out the formed plastic product, reassemble and position the fixed mold 1 and the movable mold 2, and prepare for the next injection molding process. When the next injection molding process is to be carried out, repeat the above process.

[0023] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A plastic injection mold with heat dissipation function, comprising: The fixed mold (1) is a hollow box, and a square groove is provided in the middle of the rear side of the fixed mold (1); The movable mold (2) is a hollow box body, which is clamped at the rear of the fixed mold (1). A square protrusion is provided in the middle of the front side of the movable mold (2). The size of the square groove on the fixed mold (1) is larger than the square protrusion on the movable mold (2). Therefore, a cavity (202) of a specific shape exists between the square groove and the square protrusion. An injection tube (201) connected to the upper part of the fixed mold (1), and the injection tube (201) is in communication with the cavity (202); Its characteristics are: Also included are: The cooling circulation mechanism arranged on the fixed mold (1) comprises: A water inlet pipe (3) is provided through the upper side surface of the fixed mold (1); A cooling device (4) is installed on the upper side of the fixed mold (1), and a water outlet of the cooling device (4) is connected to the water inlet pipe (3); A water pump (5) is installed on the upper side of the fixed mold (1), and the water outlet of the water pump (5) is connected to the water inlet of the cooling device (4); A water pipe (6) is connected to the left part of the fixed mold (1), the water outlet of the water pipe (6) is connected to the water inlet of the water pump (5), and the water outlet of the water pipe (6) is communicated with the interior of the fixed mold (1).

2. The plastic injection mold with heat dissipation function as claimed in claim 1, characterized in that: There are four injection tubes (201) uniformly distributed in a horizontal line shape on the upper side of the fixed mold (1), and the four injection tubes (201) are all connected to the cavity (202).

3. A plastic injection mold with heat dissipation function as claimed in claim 2, characterized in that: There are two cooling circulation mechanisms, which are respectively arranged on the fixed mold (1) and the movable mold (2) to enhance the cooling efficiency.

4. A plastic injection mold with heat dissipation function as claimed in claim 3, characterized in that: Also included are: A transparent plate (7), the fixed mold (1) and the movable mold (2) are both connected with a transparent plate (7).

5. The plastic injection mold with heat dissipation function as claimed in claim 4, characterized in that: Also included are: A thermometer (8) is installed on the left side of the fixed mold (1).

6. A plastic injection mold with heat dissipation function as claimed in claim 5, characterized in that: Also included are: A heat-conducting rod (81) is connected to the thermometer (8), and when the fixed mold (1) and the movable mold (2) are engaged, the heat-conducting rod (81) is located between the two.

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