An injection mold that is easy to dissipate heat

Abstract

The utility model provides an injection mold that is easy to dissipate heat, including a movable mold base and a movable mold plate arranged at the bottom thereof, wherein a fixed mold plate is arranged at the bottom of the movable mold plate, and in the utility model, an enclosing heat dissipation cavity is opened in the fixed mold plate and the movable mold plate, and a heat conduction plate is attached to the inner wall of the heat dissipation cavity, so that the contact area of ​​cooling water of the fixed mold plate and the movable mold plate is increased, and the molding cavity is cooled in an enclosing manner so that the cooling water can take away more heat, and cooling water is sprayed out by multiple high-pressure nozzles to cool down and dissipate the heat of the heat conduction plate. At the same time, the cooling water cooled by the refrigerator in the heat dissipation cavity fills the heat dissipation cavity and can take away the heat inside the fixed mold plate and the movable mold plate. At the same time, after the movable mold plate is demolded, the multiple air outlets on the heat dissipation frame blow toward the molded workpiece, so that the molded workpiece is quickly cooled, and the heat dissipation effect is good. The combination of air cooling and water cooling is adopted, and the cooling effect is good, the cooling speed is fast, the working efficiency is high, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and more specifically, relates to an injection mold that is easy to dissipate heat. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors and patterns, shapes ranging from simple to complex, and sizes ranging from large to small. Furthermore, the product dimensions are precise, the product is easy to update, and it can produce parts with complex shapes. Injection molding is suitable for mass production and other molding processes involving complex shapes. At a certain temperature, completely molten plastic material is stirred by a screw, injected into the mold cavity at high pressure, and cooled and solidified to obtain a molded product. This method is suitable for the mass production of complex-shaped parts and is one of the most important processing methods. The injection mold is a key component of plastic molding. In order to quickly shape the plastic in the mold, the injection mold needs to be cooled in a timely manner to ensure that the molded workpiece can be cooled and formed better.

[0003] Most existing injection molds rely on their own heat conduction, or only cool the mold through refrigerant pipes. The cooling efficiency is low and the cooling speed is slow, which affects the molding efficiency of plastic parts, resulting in low production efficiency, slow processing efficiency, and increased costs.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an injection mold that is easy to dissipate heat is provided, in order to achieve a purpose with greater practical value. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an injection mold that is easy to dissipate heat, so as to solve the problem that most of the current injection molds rely on their own heat conduction, or only cool the mold through a refrigerant pipe, which has low cooling efficiency and slow cooling speed, thereby affecting the molding efficiency of plastic parts, resulting in low production efficiency, slow processing efficiency, and increased costs.

[0006] The purpose and effect of the injection mold for easy heat dissipation of the utility model are achieved by the following specific technical means:

[0007] A mold for injection molding that is easy to dissipate heat comprises a movable mold base and a movable mold plate arranged at the bottom thereof, a fixed mold plate being provided at the bottom of the movable mold plate, a molding cavity being formed on the inner side of the bottom surface of the movable mold plate after being bonded to the top surface of the fixed mold plate, a heat dissipation cavity being provided in both the movable mold plate and the fixed mold plate, each of the heat dissipation cavities being connected to a heat conducting plate near the molding cavity, a round tube being provided on the outer side of the movable mold plate and the fixed mold plate, a plurality of high-pressure nozzles being distributed in a rectangular shape on the inner side of each of the round tubes, the plurality of high-pressure nozzles extending into the interior of the heat dissipation cavity, a plurality of refrigerators being provided on the outer side of the movable mold plate and the fixed mold plate, a heat dissipation frame being provided between the outer sides of the movable mold plate and the fixed mold plate, a fan being installed on the heat dissipation frame, and a plurality of air outlet holes being provided on the inner side of the heat dissipation frame near the top.

[0008] Furthermore, square irons are installed on both sides of the bottom of the fixed template, and a base is commonly installed on the bottoms of the two square irons.

[0009] Furthermore, a pin plate is provided on the top of the base, and springs are connected to the four corners of the top of the pin plate. The top of each spring is connected to the bottom of the fixed template. A plurality of pins are provided on the top of the pin plate, and the plurality of pins extend into the molding cavity.

[0010] Furthermore, an injection port is provided at the center of the top of the movable mold base, and the bottom of the injection port is connected to the molding cavity.

[0011] Furthermore, the cold fin ends of the plurality of refrigerators are all arranged inside the heat dissipation cavity, and the hot fin ends of the plurality of refrigerators are arranged outside the movable template and the fixed template.

[0012] Furthermore, one side of each of the looped tubes is connected to a water inlet pipe, one side of each of the molding cavities near the bottom is connected to a water outlet pipe, each of the water inlet pipes is plugged with a rubber plug, and each of the water outlet pipes is connected to a valve.

[0013] Furthermore, the inner side of the heat dissipation frame is connected to the top outer wall of the fixed template, and the inner side of the heat dissipation frame is fitted to the movable template.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the utility model, an enclosed heat dissipation cavity is provided in the fixed die plate and the movable die plate, and a heat conducting plate is attached to the inner wall of the heat dissipation cavity, so that the contact area of ​​the cooling water of the fixed die plate and the movable die plate is increased, and the molding cavity is subjected to enclosed heat dissipation cooling, so that the cooling water can take away more heat. A plurality of high-pressure nozzles are used to spray cooling water to cool the heat conducting plate and dissipate heat. At the same time, the cooling water cooled by the refrigerator in the heat dissipation cavity fills the heat dissipation cavity and can take away the heat inside the fixed die plate and the movable die plate. At the same time, after the movable die plate is demoulded, the multiple air outlets on the heat dissipation frame blow toward the molded workpiece, which quickly cools the molded workpiece and has a good heat dissipation effect. The combination of air cooling and water cooling has a good cooling effect, a fast cooling speed, a high working efficiency and a wide range of applications.

[0016] 2. By setting up a heat dissipation cavity, a refrigerator, a movable platen and a fixed platen for use together, the cooling water filled in the heat dissipation cavity dissipates heat from the workpieces in the movable platen and the fixed platen. The refrigerator can continuously cool the cooling water in the heat dissipation cavity, so that the cooling water continuously maintains a low temperature, ensuring the heat dissipation and cooling effect on the workpiece and accelerating the cooling speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the circular tube of the present utility model.

[0019] Figure 3 It is a schematic diagram of the main cross-sectional structure of the fixed template of the present utility model.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the heat dissipation frame of the present utility model.

[0021] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0022] 1. Movable mold base; 2. Movable mold plate; 3. Fixed mold plate; 4. Molding cavity; 5. Heat dissipation cavity; 6. Heat conduction plate; 7. Ring pipe; 8. High-pressure nozzle; 9. Water inlet pipe; 10. Water outlet pipe; 11. Rubber plug; 12. Valve; 13. Refrigerator; 14. Heat dissipation frame; 15. Fan; 16. Air outlet; 17. Square iron; 18. Base; 19. Ejector plate; 20. Ejector; 21. Injection port; 22. Spring. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] As attached Figure 1 To the attached Figure 4 As shown:

[0028] The utility model provides an injection mold that is easy to dissipate heat, including a movable mold base 1 and a movable mold plate 2 arranged at the bottom thereof, a fixed mold plate 3 is provided at the bottom of the movable mold plate 2, and a molding cavity 4 is formed on the inner side thereof after the bottom surface of the movable mold plate 2 is bonded to the top surface of the fixed mold plate 3, a heat dissipation cavity 5 is opened in the movable mold plate 2 and the fixed mold plate 3, each heat dissipation cavity 5 is connected to a heat conducting plate 6 near the molding cavity 4, a circular tube 7 is sleeved on the outer side of the movable mold plate 2 and the fixed mold plate 3, a plurality of high-pressure nozzles 8 are rectangularly distributed on the inner side of each circular tube 7, and the plurality of high-pressure nozzles 8 extend into the interior of the heat dissipation cavity 5, a plurality of refrigerators 13 are provided on the outer side of the movable mold plate 2 and the fixed mold plate 3, a heat dissipation frame 14 is sleeved between the outer sides of the movable mold plate 2 and the fixed mold plate 3, a fan 15 is installed on the heat dissipation frame 14, and a plurality of air outlet holes 16 are opened on the inner side of the heat dissipation frame 14 near the top.

[0029] In other embodiments, square irons 17 are installed on both sides of the bottom of the fixed template 3 , and a base 18 is commonly installed at the bottom of the two square irons 17 , so that the square irons 17 are used to support the fixed template 3 .

[0030] In other embodiments, a pin plate 19 is provided on the top of the base 18, and springs 22 are connected to the four corners of the top of the pin plate 19. The top of each spring 22 is connected to the bottom of the fixed template 3. A plurality of pins 20 are provided on the top of the pin plate 19, and the plurality of pins 20 extend into the molding cavity 4. After the plastic product is molded, the plurality of pins 20 are extended into the molding cavity 4 to push out the molded workpiece in the molding cavity 4.

[0031] In other embodiments, an injection port 21 is provided at the top center of the movable mold base 1, and the bottom of the injection port 21 is connected to the molding cavity 4. The thermoplastic raw material can be injected into the molding cavity 4 between the movable mold plate 2 and the fixed mold plate 3 through the injection port 21.

[0032] In other embodiments, the cold fin ends of multiple refrigerators 13 are all arranged inside the heat dissipation cavity 5, and the hot fin ends of multiple refrigerators 13 are arranged outside the movable template 2 and the fixed template 3. When the multiple refrigerators 13 are started to work, the cold fin ends of the refrigerator 13 cool the cooling water inside the heat dissipation cavity 5, while the hot fin ends of the refrigerator 13 are located outside the movable template 2 and the fixed template 3, and the heat is dissipated by the natural wind from the outside.

[0033] In other embodiments, one side of each loop tube 7 is connected to a water inlet pipe 9, and one side of each molding cavity 4 near the bottom is connected to a water outlet pipe 10. A rubber plug 11 is inserted into each water inlet pipe 9, and a valve 12 is connected to each water outlet pipe 10. By pulling out the rubber plug 11, water can be introduced into the water inlet pipe 9, so that cooling water can enter the interior of the loop tube 7. After the molded workpiece is cooled and dissipated, the valve 12 can be opened to discharge the water in the molding cavity 4.

[0034] In other embodiments, the inner side of the heat dissipation frame 14 is connected to the top outer wall of the fixed template 3, and the inner side of the heat dissipation frame 14 is fitted between the movable template 2. After the workpiece is formed, the mold between the movable template 2 and the fixed template 3 is opened, and the movable template 2 moves upward, and multiple air outlet holes 16 are exposed. The fan 15 on the heat dissipation frame 14 works, so that the multiple air outlet holes 16 blow toward the formed workpiece, quickly cooling the formed workpiece, and achieving better heat dissipation effect.

[0035] The specific usage and function of this embodiment are as follows:

[0036] In the present invention, raw materials are injected into the molding cavity 4 of the movable mold plate 2 and the fixed mold plate 3 through the injection port 21. After the injection is completed, the water inlet pipe 9 is connected to the external cooling water source. The cooling water flows into the return pipe 7 through the water inlet pipe 9 and is sprayed to the heat dissipation cavity 5 through multiple high-pressure nozzles 8. An enclosed heat dissipation cavity 5 is opened in the fixed mold plate 3 and the movable mold plate 2. A heat conducting plate 6 is attached to the inner wall of the heat dissipation cavity 5, so that the contact area of ​​the cooling water of the fixed mold plate 3 and the movable mold plate 2 is increased. The cooling water sprayed by the multiple high-pressure nozzles 8 performs enclosed heat dissipation cooling on the molding cavity 4, so that the cooling water can take away more heat. At the same time, multiple refrigerators 13 are started to work. The cooling plate end of 13 is refrigerated, thereby cooling the cooling water inside the heat dissipation cavity 5, so that the cooling water continues to maintain a low temperature, ensuring the heat dissipation and cooling effect on the workpiece. The cooling water fills the heat dissipation cavity 5 and can take away the heat inside the fixed template 3 and the movable template 2. After the workpiece is formed, the mold between the movable template 2 and the fixed template 3 is opened, and the movable template 2 moves upward, and multiple air outlets 16 are exposed. The fan 15 on the heat dissipation frame 14 works, so that the multiple air outlets 16 blow toward the formed workpiece, quickly cool the formed workpiece, and have a good heat dissipation effect. The combination of air cooling and water cooling has a good cooling effect, a fast cooling speed, a high working efficiency, and a wide range of applications.

[0037] It should be noted that the specific model specifications of the valve 12 and the fan 15 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The valve 12 and the fan 15 are devices or equipment that exist in the existing technology, or are devices or equipment that can be realized by the existing technology. Their power supply, specific composition and principles are clear to those skilled in the art and are common knowledge in this field, so they will not be described in detail.

[0038] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. An injection mold that is easy to dissipate heat, characterized in that: The invention comprises a movable mold base (1) and a movable mold plate (2) arranged at the bottom thereof, a fixed mold plate (3) being arranged at the bottom of the movable mold plate (2), a molding cavity (4) being formed inside the bottom surface of the movable mold plate (2) and the top surface of the fixed mold plate (3) after being bonded, a heat dissipation cavity (5) being provided inside the movable mold plate (2) and the fixed mold plate (3), each heat dissipation cavity (5) being connected to a heat conducting plate (6) near the molding cavity (4), and a round tube (7) being sleeved on the outer side of the movable mold plate (2) and the fixed mold plate (3) ), a plurality of high-pressure nozzles (8) are rectangularly distributed on the inner side of each of the circular tubes (7), and the plurality of high-pressure nozzles (8) extend to the interior of the heat dissipation cavity (5), a plurality of refrigerators (13) are provided on the outer sides of the movable mold plate (2) and the fixed mold plate (3), a heat dissipation frame (14) is sleeved between the outer sides of the movable mold plate (2) and the fixed mold plate (3), a fan (15) is installed on the heat dissipation frame (14), and a plurality of air outlet holes (16) are opened on the inner side of the heat dissipation frame (14) near the top.

2. The injection mold for easy heat dissipation as claimed in claim 1, characterized in that: Square irons (17) are installed on both sides of the bottom of the fixed template (3), and a base (18) is installed on the bottom of the two square irons (17).

3. The injection mold for easy heat dissipation as claimed in claim 2, characterized in that: A pin plate (19) is provided on the top of the base (18), and springs (22) are connected to the four corners of the top of the pin plate (19), and the top of each spring (22) is connected to the bottom of the fixed mold plate (3). A plurality of pins (20) are provided on the top of the pin plate (19), and the plurality of pins (20) extend into the molding cavity (4).

4. The injection mold for easy heat dissipation as claimed in claim 1, characterized in that: An injection port (21) is provided at the center of the top of the movable mold base (1), and the bottom of the injection port (21) is connected to the molding cavity (4).

5. The injection mold for easy heat dissipation as claimed in claim 1, characterized in that: The cold plate ends of the plurality of refrigerators (13) are all arranged inside the heat dissipation cavity (5), and the hot plate ends of the plurality of refrigerators (13) are arranged outside the movable mold plate (2) and the fixed mold plate (3).

6. The injection mold for easy heat dissipation as claimed in claim 1, characterized in that: One side of each of the loop pipes (7) is connected to a water inlet pipe (9), one side of each of the molding cavities (4) near the bottom is connected to a water outlet pipe (10), each of the water inlet pipes (9) is plugged with a rubber plug (11), and each of the water outlet pipes (10) is connected to a valve (12).

7. The injection mold for easy heat dissipation as claimed in claim 1, characterized in that: The inner side of the heat dissipation frame (14) is connected to the top outer wall of the fixed mold plate (3), and the inner side of the heat dissipation frame (14) is fitted between the movable mold plate (2).

Images