Injection mold with heat dissipation structure

Abstract

The injection mold with the heat dissipation structure comprises an upper mold assembly and a lower mold assembly, the upper mold assembly comprises a top seat, an upper mold base plate and an upper forming plate which are detachably installed, and an upper mold core is arranged on the upper forming plate; the lower mold assembly is arranged below the upper mold assembly and comprises a base, a lower mold base plate and a lower forming plate which are detachably mounted, a lower mold core is arranged on the lower forming plate, and the lower mold core and the upper mold core are matched to form a forming cavity; the heat exchange runner is communicated with an external circulating cold source, and the heat exchange runner is formed in the upper mold base plate and penetrates through the end faces of the two opposite sides of the upper mold base plate; or / and; the heat exchange runner is formed in the lower die base plate and penetrates through the end faces of the two opposite sides of the lower die base plate. The heat exchange flow channel comprises a main flow channel and a plurality of disturbing flow channels communicated with the main flow channel, the heat exchange flow channel generates fluid flowing from the main flow channel to the disturbing flow channels under the action of the circulating cold source, and the width size of the main flow channel is larger than the sum of the width sizes of the disturbing flow channels. The LED lamp is good in heat dissipation effect and high in production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with a heat dissipation structure. Background Art

[0002] Injection molding, also known as injection molding, is a molding method widely used in the plastics processing industry. It involves injecting molten plastic material into a mold, allowing it to cool and solidify to form the desired product. The advantages of injection molding lie in its high production speed, high efficiency, and the ability to be automated, making it suitable for large-scale production. This molding method offers several advantages. First, injection molding can produce a wide variety of products, ranging from simple daily necessities to complex industrial parts. Second, injection molded products are dimensionally precise and can meet stringent industry standards. Furthermore, with technological advancements, the variety of colors and styles of plastic products is increasing, allowing them to quickly adapt to market demand and helping companies upgrade their products.

[0003] However, in actual production, mold temperatures often rise as equipment operates over extended periods. Failure to promptly cool the mold can lead to a range of problems, including reduced product quality, surface defects in the finished product, and difficulty in demolding. Excessively high mold temperatures not only affect the plastic's fluidity but can also cause deformation or cracking in the finished product, reducing overall product quality. Furthermore, high temperatures make manual demolding more difficult, requiring workers to expend more time and effort to remove the finished product, which undoubtedly increases production cycle time and reduces work efficiency. Utility Model Content

[0004] The utility model aims to provide an injection mold with a heat dissipation structure, aiming to solve the problem of temperature increase caused by long-term operation of the mold.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An injection mold with a heat dissipation structure, comprising:

[0007] The upper mold assembly includes a detachably mounted top seat, an upper mold base plate and an upper molding plate, wherein the upper molding plate is provided with an upper mold core;

[0008] A lower mold assembly is arranged below the upper mold assembly and includes a detachably mounted base, a lower mold base plate, and a lower molding plate. The lower molding plate is provided with a lower mold core, and the lower mold core and the upper mold core cooperate to form a molding cavity.

[0009] A heat exchange channel is connected to an external circulating cold source, and the heat exchange channel is opened in the upper mold base plate and passes through two opposite end surfaces of the upper mold base plate;

[0010] or / and;

[0011] The heat exchange channel is opened in the lower mold base plate and passes through the opposite end surfaces of the lower mold base plate;

[0012] The heat exchange channel includes a main flow channel and a disruptive flow channel connected to the main flow channel. Under the action of a circulating cold source, the heat exchange channel generates a fluid that flows from the main flow channel to the disruptive flow channel. The width of the main flow channel is greater than the sum of the widths of several of the disruptive flow channels.

[0013] In some embodiments, the length of the main flow channel is smaller than the length of the disruptive flow channel.

[0014] In some embodiments, a plurality of the flow-turbulating channels are spaced apart in the width direction, and a separator extending along the length direction of the heat exchange channel is formed between adjacent flow-turbulating channels, and one end of the separator facing the main flow channel is a pointed end.

[0015] In some embodiments, in the width direction, buffer bevels are provided between the two side edges of the main flow channel and the outer sides of the outermost spoiler flow channel on the same side, and the two buffer bevels gradually tilt outward from the main flow channel toward the spoiler flow channel.

[0016] In some embodiments, some disruptive fluids are arranged at intervals along the length direction in each of the disruptive flow channels. In the length direction, the width of the middle portion of the disruptive fluid is greater than the width of the two ends, and the width of the disruptive fluid is smaller than the width of the corresponding disruptive flow channel.

[0017] In some embodiments, in the width direction, a gap is formed between the disruptive body and two side edges of the corresponding disruptive flow channel.

[0018] In some embodiments, the cross section of the disrupting fluid is axisymmetric, and the axis of symmetry of the cross section of the disrupting fluid in the same disrupting flow channel is collinear with the central axis of the corresponding disrupting flow channel.

[0019] In some embodiments, the cross-section of the flow-disturbing body is a diamond-shaped structure or a spindle-shaped structure.

[0020] In some embodiments, heat exchange channels are provided in both the upper mold substrate and the lower mold substrate. Under the action of a circulating cold source, a fluid flowing along a first direction is generated in the heat exchange channel of the upper mold substrate, and a fluid flowing along a second direction is generated in the heat exchange channel of the lower mold substrate. The first direction is opposite to the second direction.

[0021] In some embodiments, a guide assembly is further included, which is used for guiding and positioning the opening and closing of the upper mold assembly and the lower mold assembly. The guide assembly includes a guide rod fixed on the lower mold base plate and a guide sleeve mounted on the guide rod, and the guide sleeve is fixed on the upper mold base plate.

[0022] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are:

[0023] The injection mold of this application introduces the fluid from the cooling source through the main flow channel. Due to the wide width of the main flow channel, the fluid enters at a high initial velocity. When the fluid enters the turbulent flow channel, the rapid change in flow channel size causes flow instability, resulting in turbulence. This increases the contact area between the fluid and the mold surface, significantly accelerating heat transfer. This rapid heat exchange process effectively prevents product quality issues caused by overheating.

[0024] At the same time, the design of multiple flow channels ensures uniform cooling across the mold surface. This expands the cooling fluid's coverage, avoids localized overheating, and reduces the risk of deformation and cracking in the finished product. This uniform cooling effect improves product consistency and reduces scrap rates.

[0025] In addition, the efficient cooling mechanism significantly shortens the cooling time of the mold, thereby shortening the production cycle and improving overall production efficiency. The time and energy required by workers for demoulding are also effectively reduced, making production operations smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the injection mold of this application;

[0028] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the lower mold substrate shown.

[0029] Description of reference numerals:

[0030] 1-upper mold assembly; 11-top seat; 12-upper mold base plate; 13-upper molding plate; 2-lower mold assembly; 21-base; 22-lower mold base plate; 23-lower molding plate; 24-support plate; 3-heat exchange flow channel; 31-main flow channel; 32-turbulent flow channel; 33-separator; 34-turbulent body; 35-buffer bevel; 4-injection hole; 5-ejection assembly. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0034] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to express a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] See Figure 1 and Figure 2 An embodiment of the present application provides an injection mold with a heat dissipation structure, including an upper mold assembly 1, a lower mold assembly 2 arranged below the upper mold assembly 1, a heat exchange channel 3 and a guide assembly.

[0038] In detail, the guide assembly is used for guiding the opening and closing of the upper mold assembly 1 and the lower mold assembly 2. The guide assembly includes a guide rod fixed to the lower mold base plate 22 and a guide sleeve mounted on the guide rod, and the guide sleeve is fixed to the upper mold base plate 12. It is a conventional structure and will not be described in detail here.

[0039] The upper mold assembly 1 includes a removably mounted top seat 11, an upper mold base plate 12, and an upper molding plate 13. The upper molding plate 13 has an upper mold core. The lower mold assembly 2 includes a removably mounted base 21, a lower mold base plate 22, and a lower molding plate 23. The lower molding plate 23 has a lower mold core. The lower mold core and the upper mold core cooperate to form a molding cavity.

[0040] In some optional embodiments, the top seat 11, the upper mold base plate 12, and the upper forming plate 13, as well as the lower mold base plate 22 and the lower forming plate 23, are detachably connected by bolts. The base 21 and the lower mold base plate 22 are connected by two support plates 24. A receiving space is formed between the lower mold base plate 22, the two support plates 24, and the base 21. The ejector assembly 5 is housed in the receiving space. This is a conventional structure.

[0041] The heat exchange channel 3 is connected to the external circulating cold source, and the heat exchange channel 3 is opened in the upper mold base plate 12 and passes through the opposite side end surfaces of the upper mold base plate 12; or / and the heat exchange channel 3 is opened in the lower mold base plate 22 and passes through the opposite side end surfaces of the lower mold base plate 22.

[0042] In some preferred embodiments, heat exchange channels 3 are provided in both the upper mold base plate 12 and the lower mold base plate 22. Under the action of a circulating cold source, fluid flows in a first direction within the heat exchange channels 3 of the upper mold base plate 12, while fluid flows in a second direction within the heat exchange channels 3 of the lower mold base plate 22. The first and second directions are opposite. This approach can improve heat exchange efficiency, optimize temperature distribution, and effectively reduce energy consumption. The bidirectional flow of fluid creates a more uniform temperature field, reducing local overheating or overcooling, thereby improving the performance and reliability of the overall system.

[0043] It is worth noting that the top seat 11 is also provided with an injection hole 4, which passes through the upper mold base plate 12 and the upper molding plate 13 in sequence to connect to the molding cavity. The heat exchange flow channel 3 provided in the upper mold base plate 12 is arranged to bypass the injection hole 4 to ensure that the fluid flows smoothly without interfering with the injection molding process and effectively improve the cooling effect of the mold. In this embodiment, the fluid is specifically a gas, such as air, nitrogen, or carbon dioxide. In other embodiments, the fluid can also be a liquid, such as water or oil. This is a conventional setting.

[0044] It should be noted that the width direction is as follows Figure 2 As shown by the arrow a, the length direction is Figure 2 As shown by arrow b.

[0045] The heat exchange channel 3 includes a main flow channel 31 and a disturbing flow channel 32 connected to the main flow channel 31. Under the action of a circulating cold source, the heat exchange channel 3 generates a fluid that flows from the main flow channel 31 to the disturbing flow channel 32. The width of the main flow channel 31 is greater than the sum of the widths of the disturbing flow channels 32. The main flow channel 31 is relatively wide, which can encourage more fluid to enter at a higher flow rate, thereby improving the heat exchange efficiency. By setting the disturbing flow channel 32, the fluid can be effectively distributed so that the fluid can flow evenly to various areas to avoid local overheating. The rapid change in the width from the main flow channel 31 to the disturbing flow channel 32 causes the flow to be unstable and forms turbulence. This increases the contact area between the fluid and the mold surface and significantly accelerates the heat transfer. This rapid heat exchange process effectively prevents product quality problems caused by overheating. This application does not limit the cross-sectional shape of the main flow channel 31 and the disturbing flow channel 32.

[0046] In some embodiments, the length of the main flow channel 31 is smaller than that of the turbulent flow channel 32. This reduces the residence time of the fluid in the main flow channel 31, thereby improving the fluid's circulation efficiency and allowing it to quickly enter the turbulent flow channel 32 for heat exchange. The longer design of the turbulent flow channel 32 helps to create more turbulence and mixing during the fluid flow, further improving heat exchange performance.

[0047] In some embodiments, if the disruptive flow channels 32 are spaced apart along the width direction, a separator 33 extending along the length of the heat exchange channel 3 is formed between adjacent disruptive flow channels 32, and the end of the separator 33 facing the main flow channel 31 is a pointed end. The pointed design of the separator 33 can effectively disrupt the laminar flow characteristics of the fluid, promote the formation of turbulent flow, thereby improving heat exchange efficiency, and guide the fluid to be evenly distributed along the heat exchange channel 3, reducing flow dead zones and improving overall heat exchange performance. At the same time, the pointed design can reduce resistance during fluid passage, reduce energy loss, and improve the overall efficiency of the system. In addition, the provision of the separator 33 can increase the contact area between the fluid and the heat exchange surface, thereby improving heat transfer efficiency.

[0048] In some embodiments, in the width direction, buffer bevels 35 are provided between the two side edges of the main flow channel 31 and the outer edges of the outermost spoiler flow channel 32 on the same side. The two buffer bevels 35 gradually tilt outward from the main flow channel 31 toward the spoiler flow channel 32. Due to the provision of the separator 33, the inlet width of the outermost spoiler flow channel 32 is limited between the outermost separator 33 and the side edge on the same side of the main flow channel, resulting in a large pressure difference of the fluid at the inlet of the spoiler flow channel 32. By providing the buffer bevels 35 to increase the inlet width of the outermost spoiler flow channel 32, when the fluid reaches the inlet of the spoiler flow channel 32, the fluid pressure at the inlet of the spoiler flow channel 32 tends to be consistent, so that the fluid can flow relatively smoothly into each spoiler flow channel 32, thereby ensuring that the fluid passes evenly through the entire heat exchange channel 3.

[0049] In some embodiments, each flow-disrupting channel 32 is provided with a plurality of interfering fluids 34 spaced apart along its length. In the longitudinal direction, the width of the central portion of the interfering fluid 34 is greater than the width of the ends, and the width of the interfering fluid 34 is smaller than the width of the corresponding flow-disrupting channel 32. Specifically, in the width direction, a gap is formed between the interfering fluid 34 and the two sides of the corresponding flow-disrupting channel 32. The special shape and gap design of the interfering fluid 34 can increase the turbulence of the fluid and improve heat exchange efficiency. By providing a certain gap within the flow-disrupting channel 32, the fluid can be more evenly distributed as it flows through the interfering fluid 34, reducing dead zones and localized flow velocity unevenness.

[0050] In some embodiments, the cross section of the disrupting body 34 is axisymmetric, and the axis of symmetry of the cross section of the disrupting body 34 in the same disrupting flow channel 32 is collinear with the central axis of the corresponding disrupting flow channel 32 .

[0051] In some embodiments, to improve the flow-disturbing effect, the two ends of the flow-disturbing body 34 in the length direction are pointed. Specifically, the cross section of the flow-disturbing body 34 is a diamond-shaped structure or a shuttle-shaped structure.

[0052] Finally, it should be noted that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An injection mold with a heat dissipation structure, characterized in that: include: The upper mold assembly includes a detachably mounted top seat, an upper mold base plate and an upper molding plate, wherein the upper molding plate is provided with an upper mold core; A lower mold assembly is arranged below the upper mold assembly and includes a detachably mounted base, a lower mold base plate, and a lower molding plate. A lower mold core is provided on the lower molding plate. The lower mold core and the upper mold core cooperate to form a molding cavity. A heat exchange channel is connected to an external circulating cold source, and the heat exchange channel is opened in the upper mold base plate and passes through two opposite end surfaces of the upper mold base plate; or / and; The heat exchange channel is opened in the lower mold base plate and passes through the opposite end surfaces of the lower mold base plate; The heat exchange channel includes a main flow channel and a disruptive flow channel connected to the main flow channel. Under the action of a circulating cold source, the heat exchange channel generates a fluid that flows from the main flow channel to the disruptive flow channel. The width of the main flow channel is greater than the sum of the widths of several of the disruptive flow channels.

2. The injection mold with a heat dissipation structure according to claim 1, wherein: The length of the main flow channel is smaller than the length of the spoiler flow channel.

3. The injection mold with a heat dissipation structure according to claim 1 or 2, characterized in that: A plurality of the flow-turbulating channels are arranged at intervals along the width direction, and a separator extending along the length direction of the heat exchange channel is formed between adjacent flow-turbulating channels, and one end of the separator facing the main flow channel is a pointed end.

4. The injection mold with a heat dissipation structure according to claim 3, wherein: In the width direction, buffer oblique edges are respectively provided between the two side edges of the main flow channel and the outer sides of the outermost spoiler flow channel on the same side, and the two buffer oblique edges gradually tilt outward from the main flow channel toward the spoiler flow channel.

5. The injection mold with a heat dissipation structure according to claim 1 or 2, characterized in that: Several disruptive fluids are arranged in each disruptive flow channel at intervals along the length direction. In the length direction, the width of the middle portion of the disruptive body is larger than the width of the two ends, and the width of the disruptive body is smaller than the width of the corresponding disruptive flow channel.

6. The injection mold with a heat dissipation structure according to claim 5, characterized in that: In the width direction, gaps are formed between the disruptive body and two side edges corresponding to the disruptive flow channel.

7. The injection mold with a heat dissipation structure according to claim 6, wherein: The cross section of the disrupting body is an axisymmetric structure, and the axis of symmetry of the cross section of the disrupting fluid in the same disrupting flow channel is collinear with the central axis of the corresponding disrupting flow channel.

8. The injection mold with a heat dissipation structure according to claim 7, wherein: The cross section of the disturbing body is a diamond structure or a shuttle structure.

9. The injection mold with a heat dissipation structure according to claim 1, wherein: Heat exchange channels are provided in both the upper mold base plate and the lower mold base plate. Under the action of a circulating cold source, a fluid flowing along a first direction is generated in the heat exchange channel of the upper mold base plate, and a fluid flowing along a second direction is generated in the heat exchange channel of the lower mold base plate. The first direction is opposite to the second direction.

10. The injection mold with a heat dissipation structure according to claim 1, wherein: It also includes a guide assembly, which is used for opening and closing guiding and positioning of the upper mold assembly and the lower mold assembly. The guide assembly includes a guide rod fixed on the lower mold base plate and a guide sleeve mounted on the guide rod, and the guide sleeve is fixed on the upper mold base plate.

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