A plastic molding die

Abstract

The utility model provides a kind of plastic forming mould, the plastic forming mould provided includes: female mould component, the female mould component includes female mould kernel;Male mould component, the male mould component includes male mould kernel and sliding block, the sliding block is located between the male mould kernel and female mould kernel, and can be enclosed with the male mould kernel and female mould kernel to form mould cavity;The female mould kernel, male mould kernel and sliding block are at least provided with one cooling water path and one electromagnetic heating pipe in each, and the electromagnetic heating pipe is closer to the mould cavity compared with the cooling water path.The plastic forming mould provided by the utility model can effectively reduce the surface stress mark of plastic product, reduce the stress mark scrap and stress mark post-process time, improve productivity, and reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the field of plastic product molding technology, and in particular relates to a plastic molding mold. Background Technology

[0002] After plastic products are molded, stress marks usually appear on the surface, causing surface defects. To eliminate these surface defects, the stress marks are usually removed manually or covered with paint. This practice undoubtedly increases the production cycle, is time-consuming and labor-intensive, increases production costs, and the stability of the product parts cannot be guaranteed. Utility Model Content

[0003] In view of the problems existing in the prior art, the main purpose of this utility model is to provide a plastic molding mold that can effectively reduce stress marks on the surface of plastic products, reduce stress mark scrapping and post-stress mark processing time, increase production capacity and reduce production costs.

[0004] The objective of this utility model is achieved through the following technical solution: This utility model provides a plastic molding die, the plastic molding die comprising: The female mold assembly includes a female mold core; A male mold assembly, comprising a male mold core and a slider, wherein the slider is disposed between the male mold core and the female mold core and can be formed by enclosing the male mold core and the female mold core to form a mold cavity; Each of the female mold core, male mold core, and slider is provided with at least one cooling water channel and one electromagnetic heating pipe, with the electromagnetic heating pipe being closer to the mold cavity than the cooling water channel.

[0005] As a further description of the above technical solution, when the plastic product is being formed in the mold cavity, the electromagnetic heating pipeline is in operation and the cooling water circuit is closed; Before the plastic product is molded and demolded, the electromagnetic heating circuit is shut off and the cooling water circuit is in operation.

[0006] As a further description of the above technical solution, the main body of the electromagnetic heating pipeline is arranged along the length direction of the mold cavity.

[0007] As a further description of the above technical solution, the female mold core is provided with a first electromagnetic heating pipe and a second electromagnetic heating pipe, and the first electromagnetic heating pipe and the second electromagnetic heating pipe are connected in series.

[0008] As a further description of the above technical solution, the first cooling water path provided in the female mold core includes a plurality of first cooling pipes, and the plurality of cooling pipes are in parallel structure.

[0009] As a further description of the above technical solution, the plurality of the first cooling pipes extend along the width direction of the mold cavity.

[0010] Based on the above technical solutions, the outstanding effects of this utility model are as follows: In the plastic molding die provided by this utility model, the female mold assembly includes a female mold core; the male mold assembly includes a male mold core and a slider, the slider being disposed between the male mold core and the female mold core, and being able to surround the male mold core and the female mold core to form a mold cavity; before molding the plastic product, the male mold assembly and the female mold assembly first approach each other, so that the slider, the male mold core and the female mold core can surround a mold cavity, and liquid plastic is injected into the mold cavity, so that the liquid plastic solidifies and forms a plastic product of the preset shape in the mold cavity. Each of the female mold core, male mold core, and slider is equipped with at least one cooling water channel and one electromagnetic heating pipe. The electromagnetic heating pipe is closer to the mold cavity than the cooling water channel, thus forming a three-dimensional cooling layer and heating layer around the mold cavity. During the plastic product manufacturing process, the cooling medium flows in the cooling water channel to cool the mold, while the electromagnetic heating pipe heats the mold. The alternation of hot and cold allows the mold to rise or fall to the required temperature more quickly, thereby effectively reducing surface stress marks on the molded plastic products, reducing stress mark scrap and post-stress mark process time, increasing production capacity, and reducing production costs. Attached Figure Description

[0011] Figure 1 This is a diagram showing the working state of the plastic molding mold forming plastic products in an embodiment of this utility model.

[0012] Figure 2 This is a perspective view of the female mold core in an embodiment of this utility model; Figure 3 This is a bottom view of the female mold core in an embodiment of this utility model; Figure 4 This is a perspective view of the male mold core in an embodiment of this utility model; Figure 5 This is a bottom view of the male mold core in an embodiment of this utility model; Figure 6 This is a perspective view of the slider in an embodiment of this utility model; Explanation of icon numbers: 1. Female mold core; 2. Male mold core; 3. Slider; 4. Cooling water channel; 41. First cooling pipe; 5. Electromagnetic heating pipe; 51. First electromagnetic heating pipe; 52. Second electromagnetic heating pipe. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be noted that the terms "upper," "middle," "lower," "inner," "outer," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0015] Please see Figures 1 to 6 This utility model discloses a plastic molding die, which includes: The female mold assembly includes a female mold core 1; A male mold assembly, comprising a male mold core 2 and a slider 3, wherein the slider 3 is disposed between the male mold core 2 and the female mold core 1, and can be enclosed with the male mold core 2 and the female mold core 1 to form a mold cavity; Each of the female mold core 1, male mold core 2, and slider 3 is provided with at least one cooling water channel 4 and one electromagnetic heating pipe 5, with the electromagnetic heating pipe 5 being closer to the mold cavity than the cooling water channel.

[0016] With the above structure, before molding the plastic product, the male mold assembly and the female mold assembly first come together, so that the slider 3, the male mold core 2, and the female mold core 1 can form a mold cavity. Liquid plastic is then injected into the mold cavity, and the liquid plastic solidifies and forms a plastic product of the preset shape. Each of the female mold core 1, the male mold core 2, and the slider 3 is provided with at least one cooling water channel 4 and one electromagnetic heating pipe 5. The electromagnetic heating pipe 5 is closer to the mold cavity than the cooling water channel, thus forming a three-dimensional cooling layer and a heating layer around the mold cavity. During the plastic product production process, the cooling medium flows in the cooling water channel to cool the mold, and the electromagnetic heating pipe 5 heats the mold. The alternation of hot and cold allows the mold to rise or fall to the required temperature more quickly, thereby effectively reducing surface stress marks on the molded plastic product, reducing stress mark scrap and post-stress mark process time, increasing production capacity, and reducing production costs. The reason for using electromagnetic heating pipe 5 is that it is more energy-efficient, has less heat loss, higher heating efficiency, and is easier to control the heating temperature precisely.

[0017] Please see Figures 1 to 6 Specifically, in this embodiment, when the plastic product is being molded in the mold cavity, the cooling water circuit is closed, and the electromagnetic heating pipe 5 is running to raise the temperature of the mold, thereby improving the filling and reducing the holding pressure during the molding of the plastic product, thus reducing the occurrence of stress marks; while when the plastic product is molded but before demolding, the electromagnetic heating pipe 5 is closed, and the cooling water circuit is running, thereby lowering the temperature of the mold, so that the textured surface of the plastic product becomes shiny and close to the color of the remaining stress marks, thereby reducing the appearance defects of the plastic product.

[0018] Please see Figure 1 , Figure 2 as well as Figure 4 and Figure 6 Specifically, in this embodiment, the main body of the electromagnetic heating pipe 5 is arranged along the length direction of the mold cavity, so that the electromagnetic heating pipe 5 has a larger contact area with the female mold core 1, male mold core 2 and slider 3 of the plastic mold to implement heating.

[0019] Please see Figure 2 Specifically, in this embodiment, the female mold core 1 is provided with a first electromagnetic heating pipe 51 and a first electromagnetic heating pipe 52. The first electromagnetic heating pipe 51 and the first electromagnetic heating pipe 52 are connected in series and are connected to an external heating source. The reason for providing two electromagnetic heating pipes 5 is that the cross-sectional area of ​​the female mold core 1 used to form the mold cavity is relatively large.

[0020] Please see Figure 1 and Figure 2Specifically, in this embodiment, the first cooling water path 4 provided in the female mold core 1 includes multiple first cooling pipes 41, which are connected in parallel to an external cooling source. The simultaneous arrangement of multiple first cooling pipes 41 allows for faster cooling of the mold. Furthermore, the multiple first cooling pipes 41 extend along the width direction of the mold cavity to be staggered from the external heating source, thereby making the overall pipe layout more rational.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any changes, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic molding die, characterized in that, include: The female mold assembly includes a female mold core; A male mold assembly, comprising a male mold core and a slider, wherein the slider is disposed between the male mold core and the female mold core and can be formed by enclosing the male mold core and the female mold core to form a mold cavity; Each of the female mold core, male mold core, and slider is provided with at least one cooling water channel and one electromagnetic heating pipe, with the electromagnetic heating pipe being closer to the mold cavity than the cooling water channel.

2. The plastic molding die according to claim 1, characterized in that, When the plastic product is being formed in the mold cavity, the electromagnetic heating circuit is activated and the cooling water circuit is shut off. Before the plastic product is molded and demolded, the electromagnetic heating circuit is shut off and the cooling water circuit is in operation.

3. The plastic molding die according to claim 1, characterized in that, The main body of the electromagnetic heating pipeline is arranged along the length of the mold cavity.

4. The plastic molding die according to claim 3, characterized in that, The female mold core is provided with a first electromagnetic heating pipe and a second electromagnetic heating pipe, which are connected in series.

5. The plastic molding die according to claim 1, characterized in that, The first cooling water path provided in the female mold core includes multiple first cooling pipes, and the multiple cooling pipes are connected in parallel.

6. The plastic molding die according to claim 5, characterized in that, The plurality of the first cooling pipes extend along the width direction of the mold cavity.

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