A fan frame hot runner non-sprue injection mold
By using casting cylinders and hot nozzles in the injection molds, the problem of leaving water outlet materials in the existing injection molds is solved, and the injection molding without water outlets is achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202420696075.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-07
AI Technical Summary
Existing injection molds often have water outlet materials after injection molding, and require subsequent processing and removal, which increases the complexity and cost of the mold.
The casting cylinder is used to inject the rubber into the core assembly at high pressure through the respective corresponding hot nozzles to ensure that the inside of the core assembly is completely filled and avoid the formation of water outlet material.
The injection molding of waterless mouths is realized, the mold structure is simplified, the post-processing steps is reduced, the production efficiency is improved and material waste is reduced.
Smart Images
Figure CN222712730U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and more specifically to a fan frame hot runner non-sprue injection mold. Background Art
[0002] An injection mold is a tool for producing plastic products. Injection molding refers to injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidification, a molded product is obtained. During injection molding, the upper mold and the lower mold are closed to form a pouring system and a cavity. When the mold is opened, the upper mold and the lower mold are separated to remove the plastic product. Most molds are generally equipped with multiple glue inlets. After the plastic workpiece is injection molded, the workpiece will have a sprue part, which needs to be processed and removed later. In order to achieve the removal of the sprue material in the mold, the molds on the market will additionally design a more complex structure to carry out the detachment and removal of the sprue. These designs increase the complexity of the mold and also increase the manufacturing and use costs. Utility Model Content
[0003] The utility model aims to overcome the above-mentioned defects in the prior art and provide a fan frame hot runner sprue-free injection mold which adopts a pouring cylinder to inject the rubber material into two core components respectively through the corresponding hot nozzles at high pressure, fills the interior of the core components completely, does not form sprue material, does not require post-processing, and improves production efficiency.
[0004] To achieve the above-mentioned purpose, the utility model provides a fan frame hot runner no-sprue injection mold, including an upper mold base, a lower mold base and a core assembly for injection molding of the fan frame, the upper mold base includes a top plate, a fixed plate, an upper mold core, a heat diverter plate and a pouring device, a pouring nozzle is arranged on the top plate, the fixed plate is arranged between the top plate and the upper mold core, the heat diverter plate is installed in the top groove of the fixed plate, a storage cavity is formed inside the heat diverter plate, the pouring nozzle is connected to the top surface of the heat diverter plate and is connected to its storage cavity, the pouring device includes a first pouring cylinder, a second pouring cylinder, a first hot nozzle and a second hot nozzle, the first pouring cylinder and the second pouring cylinder are respectively installed on the fixed plate The top two sides of the heat diverter plate are respectively connected to its storage cavity, the first hot nozzle and the second hot nozzle are respectively fixedly arranged on the bottom two sides of the heat diverter plate, the feeding end of the first hot nozzle and the feeding end of the second hot nozzle are respectively connected to the bottom surface of the heat diverter plate and are connected to its storage cavity, the upper mold core and the lower mold core of the lower mold base cooperate to form a mold cavity, the core assemblies are provided with two and are respectively located in the two mold cavities, the discharge end of the first hot nozzle and the discharge end of the second hot nozzle respectively extend downward into their respective corresponding core assemblies, the output parts of the first pouring cylinder and the second pouring cylinder can press the rubber material in the storage cavity through the first hot nozzle and the second hot nozzle into the two core assemblies for injection molding.
[0005] Preferably, a first heating tube and a second heating tube are embedded on the outside of the heat diverter plate, and the first heating tube and the second heating tube are respectively arranged in a winding manner on the upper and lower sides of the heat diverter plate, and two groups of connectors are provided on the two outer sides of the heat diverter plate, and the first heating tube and the second heating tube are respectively electrically connected to their corresponding connectors.
[0006] Preferably, it also includes two front core pulling assemblies, two rear core pulling assemblies and two side core pulling assemblies, each of the front core pulling assembly, the rear core pulling assembly and the side core pulling assembly is respectively located in the top groove of the lower mold core, each core assembly includes a front mold core, a rear mold core, an upper mold core and a lower mold core, the front mold core and the rear mold core are respectively arranged between the upper mold core and the lower mold core, the inner side edges of the front mold core and the rear mold core cooperate to form an oblique groove for inserting the side core pulling assembly, the outer end of the front mold core is provided with a front core pulling assembly, and the outer end of the rear mold core is provided with a rear core pulling assembly.
[0007] Preferably, the front core pulling assembly comprises a front core pulling slider and a front core pulling guide post, the interior of the front core pulling slider is provided with a front core pulling guide hole obliquely passing through the direction away from the rear core pulling assembly from top to bottom, the front core pulling guide post is obliquely inserted in the front core pulling guide hole, the rear core pulling assembly comprises a rear core pulling slider and a rear core pulling guide post, the interior of the rear core pulling slider is provided with a rear core pulling guide hole obliquely passing through the direction away from the front core pulling assembly from top to bottom, the rear core pulling guide post is obliquely inserted in the rear core pulling guide hole, the side core pulling assembly comprises a side core pulling slider, a side core pulling guide post and a side core pulling forming protrusion, the interior of the side core pulling slider is provided with a side core pulling guide hole obliquely passing through from top to bottom, the side core pulling guide post is obliquely inserted in the side core pulling guide hole, one end of the side core pulling forming protrusion close to the front mold core and the rear mold core is inserted into the oblique groove, and the other end of the side core pulling forming protrusion is fixedly connected to the side core pulling slider.
[0008] Preferably, the lower mold core is provided with a plurality of slide grooves for relative sliding of each front core-pulling slider, rear core-pulling slider and side core-pulling slider, and each front core-pulling slider, rear core-pulling slider and side core-pulling slider can be installed in the slide groove in a translational manner.
[0009] Preferably, the lower mold base also includes a lower mold base plate, an ejector base plate, an ejector panel, an ejector, an ejector plate guide column, a square iron, and a limit column. The square iron is provided in two pieces and is installed at intervals between the lower mold base plate and the lower mold core. The top groove of the lower mold core is set as an injection lower mold. The ejector is installed on the top of the ejector base plate through the ejector panel. The upper end of the ejector can extend into the injection lower mold after passing through the lower mold core. The ejector plate guide columns are respectively arranged between the lower mold base plate and the lower mold core. The ejector plate guide columns pass through the ejector base plate and the ejector panel. The limit columns are located between the lower mold base plate and the lower mold core and pass through the ejector base plate and the ejector panel respectively.
[0010] Preferably, a plurality of hot runners are provided inside the fixing plate.
[0011] Preferably, a plurality of first coolant flow channels are provided inside the upper mold core, and a plurality of second coolant flow channels are provided inside the lower mold core.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The utility model has a simple and novel structure and a reasonable design. The injection mold adopts a pouring cylinder to inject the rubber material into two core components at high pressure through the corresponding hot nozzles, so that the inside of the core components can be completely filled. After the fan frame is finally cooled and formed, no nozzle material will be formed, and no subsequent cutting processing is required. Two fan frames can also be injection molded at one time, and the pouring is more uniform, which effectively improves the production efficiency and reduces the waste of materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;
[0016] Figure 2 This is an explosion diagram provided by the embodiment of the utility model Figure 1 ;
[0017] Figure 3 This is an explosion diagram provided by the embodiment of the utility model Figure 2 ;
[0018] Figure 4 It is a structural schematic diagram of a pouring device provided in an embodiment of the utility model;
[0019] Figure 5 The explosion diagram of the core assembly and the core pulling assembly provided by the embodiment of the utility model is shown in FIG. Figure 1 ;
[0020] Figure 6 The explosion diagram of the core assembly and the core pulling assembly provided by the embodiment of the utility model is shown in FIG. Figure 2 ;
[0021] Figure 7 It is a structural schematic diagram of the lower die base provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Please refer to Figure 1 An embodiment of the utility model provides a fan frame hot runner sprue-free injection mold, including an upper mold base 1, a lower mold base 2 and a core assembly 3 for injection molding of the fan frame. The various components of this embodiment are described in detail below in conjunction with the accompanying drawings.
[0024] like Figures 1 to 3 As shown, the upper mold base 1 may include a top plate 11, a fixed plate 12, an upper mold core 13, a heat diverter plate 14 and a pouring device 15. A pouring nozzle 16 is arranged on the top plate 11. The fixed plate 12 is arranged between the top plate 11 and the upper mold core 13. The heat diverter plate 14 is installed in the top groove of the fixed plate 12. A storage cavity is formed inside the heat diverter plate 14. The pouring nozzle 16 is connected to the top surface of the heat diverter plate 14 and is communicated with its storage cavity.
[0025] like Figure 4 As shown, the pouring device 15 may include a first pouring cylinder 151, a second pouring cylinder 152, a first hot nozzle 153 and a second hot nozzle 154. The first pouring cylinder 151 and the second pouring cylinder 152 are respectively installed on both sides of the top of the heat diverter plate 14 through the fixed plate 12 and are respectively connected to its storage cavity. The first hot nozzle 153 and the second hot nozzle 154 are respectively fixedly arranged on both sides of the bottom of the heat diverter plate 14. The feeding end of the first hot nozzle 153 and the feeding end of the second hot nozzle 154 are respectively connected to the bottom surface of the heat diverter plate 14 and are connected to its storage cavity. The upper mold core 13 and the lower mold core 21 of the lower mold base 2 cooperate to form a mold cavity.
[0026] In this embodiment, two core assemblies 3 may be provided and respectively located in two mold cavities, and the discharge end of the first hot nozzle 153 and the discharge end of the second hot nozzle 154 respectively extend downward into their respective corresponding core assemblies 3.
[0027] During specific implementation, the output parts of the first pouring cylinder 151 and the second pouring cylinder 152 can press the rubber material in the storage cavity into the two core assemblies 3 through the first hot nozzle 153 and the second hot nozzle 154 for injection molding.
[0028] In this embodiment, a first heating tube 142 and a second heating tube 143 may also be embedded on the outside of the heat diverter plate 14. The first heating tube 142 and the second heating tube 143 are respectively arranged in a winding manner on the upper and lower sides of the heat diverter plate 14. Two groups of connectors 144 are provided on the two outer sides of the heat diverter plate 14. The first heating tube 142 and the second heating tube 143 are respectively electrically connected to their corresponding connectors 144.
[0029] Specifically, a plurality of first hot runners 111 may be disposed inside the top plate 11 , and a plurality of second hot runners 121 may be disposed inside the fixing plate 12 .
[0030] The arrangement of the first heating tube 142, the second heating tube 143, the first hot runner 111 and the second hot runner 121 can ensure that the rubber material is always kept in a molten state before being injected into the molding cavity, thereby improving the molding quality of the finished product.
[0031] During specific injection molding, the rubber material enters the storage cavity of the heat diverter plate 14 through the pouring nozzle 16, and the first pouring cylinder 151 and the second pouring cylinder 152 respectively inject the rubber material into the two core assemblies 3 at high pressure through the first hot nozzle 153 and the second hot nozzle 154, so that two fan frames can be injection molded at one time, which effectively improves the production efficiency; at the same time, the use of the first hot nozzle 153 and the second hot nozzle 154 in the form of material distribution can reduce the number of storage cavities, making the overall structure simpler and more compact.
[0032] like Figures 5 and 6 As shown, it can also include two front core pulling assemblies 4, two rear core pulling assemblies 5 and two side core pulling assemblies 6, each of the front core pulling assembly 4, the rear core pulling assembly 5 and the side core pulling assembly 6 are respectively located in the top groove of the lower mold core 21, and each core assembly 3 includes a front mold core 31, a rear mold core 32, an upper mold core 33 and a lower mold core 34, the front mold core 31 and the rear mold core 32 are respectively arranged between the upper mold core 33 and the lower mold core 34, the inner side edges of the front mold core 31 and the rear mold core 32 cooperate to form an oblique groove 30 for inserting the side core pulling assembly, the outer end of the front mold core 31 is provided with a front core pulling assembly 4, and the outer end of the rear mold core 32 is provided with a rear core pulling assembly 5.
[0033] Among them, when the upper mold core 13 and the lower mold core 21 are molded together, the mold surfaces of the front mold core 31, the rear mold core 32, the upper mold core 33 and the lower mold core 34 are engaged with each other to achieve mold closing, and the separate cavities of each core assembly 3 together form a complete injection cavity.
[0034] Preferably, the front core pulling assembly 4 may include a front core pulling slider 41 and a front core pulling guide column 42. The interior of the front core pulling slider 41 is provided with a front core pulling guide plug hole 43 which is obliquely penetrated from top to bottom away from the rear core pulling assembly 5. The front core pulling guide column 42 is obliquely inserted into the front core pulling guide plug hole 43.
[0035] The rear core pulling assembly 5 may include a rear core pulling slider 51 and a rear core pulling guide column 52. The rear core pulling slider 51 has a rear core pulling guide plug hole 53 extending from top to bottom and obliquely extending away from the front core pulling assembly 4. The rear core pulling guide column 52 is obliquely inserted into the rear core pulling guide plug hole 53.
[0036] Preferably, the side core pulling assembly 6 may include a side core pulling slider 61, a side core pulling guide column 62 and a side core pulling forming protrusion 63. The interior of the side core pulling slider 61 is provided with a side core pulling guide hole 64 which is obliquely penetrated from top to bottom. The side core pulling guide column 62 is obliquely inserted into the side core pulling guide hole 64. One end of the side core pulling forming protrusion 63 close to the front mold core 31 and the rear mold core 32 is inserted into the oblique groove 30, and the other end of the side core pulling forming protrusion 63 is fixedly connected to the side core pulling slider 61.
[0037] Specifically, a plurality of slide grooves 211 may be provided on the lower mold core 21 for relative sliding of each front core pulling slider 41 , rear core pulling slider 51 and side core pulling slider 61 , and each front core pulling slider 41 , rear core pulling slider 51 and side core pulling slider 61 may be translationally installed in the slide groove 211 .
[0038] When the mold is opened, the front core-pulling guide column 42, the rear core-pulling guide column 52 and the side core-pulling guide column 62 can respectively drive the front core-pulling slider 41, the rear core-pulling slider 51 and the side core-pulling slider 61 to translate in the slide groove 211, so that the inner sides of the front core-pulling slider 41, the rear core-pulling slider 51 and the side core-pulling slider 61 are all withdrawn to the outside of their respective corresponding core assemblies 3, thereby realizing core pulling and demolding, or when the mold is closed, the inner sides of several front core-pulling sliders 41, the rear core-pulling sliders 51 and the side core-pulling sliders 61 are all abutted against the sides of their respective corresponding core assemblies 3 to achieve fixation for injection molding.
[0039] like Figure 7 As shown, the lower mold base 2 can also include a lower mold base plate 22, an ejector base plate 23, an ejector panel 24, an ejector 25, an ejector plate guide column 26, a square iron 27, and a limit column 28. The square iron 27 is provided with two pieces and is installed at intervals between the lower mold base plate 22 and the lower mold core 21. The top groove of the lower mold core 21 is set as an injection lower mold 210. A plurality of ejectors 25 are provided and are installed on the top of the ejector base plate 23 through the ejector panel 24. The upper ends of the plurality of ejectors 25 can extend into the injection lower mold 210 after passing through the lower mold core 21. The ejector plate guide columns 26 are respectively arranged between the lower mold base plate 22 and the lower mold core 21. The ejector plate guide columns 26 pass through the ejector base plate 23 and the ejector panel 24. The limit columns 28 are located between the lower mold base plate 22 and the lower mold core 21 and pass through the ejector base plate 23 and the ejector panel 24 respectively.
[0040] Furthermore, a plurality of first coolant channels 131 may be provided inside the upper mold core 13 , and a plurality of second coolant channels 212 may be provided inside the lower mold core 21 .
[0041] During specific implementation, the tops of the plurality of ejector pins 25 can respectively pass upward through the lower mold core 21 and the corresponding lower mold core 34 and then extend to the top of the lower mold core 34, thereby ejecting the sash frame obtained by injection molding to achieve demolding.
[0042] The injection mold of the utility model adopts a pouring cylinder to inject the rubber material into the two core components at high pressure through the corresponding hot nozzles, so that the interior of the core components can be completely filled. After the fan frame is finally cooled and formed, no sprue material will be formed, and no subsequent cutting processing is required. Two fan frames can also be injection molded at one time, and the pouring is more uniform, which effectively improves the production efficiency and reduces the waste of materials.
[0043] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.
Claims
1. A fan frame hot runner non-sprue injection mold, characterized by: The invention comprises an upper mold base (1), a lower mold base (2) and a core assembly (3) for injection molding a fan frame, wherein the upper mold base (1) comprises a top plate (11), a fixed plate (12), an upper mold core (13), a heat diverter plate (14) and a pouring device (15), wherein a pouring nozzle (16) is arranged on the top plate (11), the fixed plate (12) is arranged between the top plate (11) and the upper mold core (13), and the heat diverter plate (14) is installed on the top of the fixed plate (12). The heat diverter plate (14) is provided with a material storage cavity formed therein, the pouring nozzle (16) is connected to the top surface of the heat diverter plate (14) and communicates with the material storage cavity, the pouring device (15) comprises a first pouring cylinder (151), a second pouring cylinder (152), a first hot nozzle (153) and a second hot nozzle (154), the first pouring cylinder (151) and the second pouring cylinder (152) are respectively mounted on the heat diverter plate (14) through a fixing plate (12). The top two sides of the flow plate (14) are respectively connected to its material storage cavity, the first hot nozzle (153) and the second hot nozzle (154) are respectively fixedly arranged on the bottom two sides of the heat diverter plate (14), the feeding end of the first hot nozzle (153) and the feeding end of the second hot nozzle (154) are respectively connected to the bottom surface of the heat diverter plate (14) and are connected to its material storage cavity, the upper mold core (13) and the lower mold core (21) of the lower mold base (2) cooperate to form a mold cavity, the core assembly (3) is provided with two and is respectively located in the two mold cavities, the discharge end of the first hot nozzle (153) and the discharge end of the second hot nozzle (154) respectively extend downward into the corresponding core assembly (3), the output parts of the first pouring cylinder (151) and the second pouring cylinder (152) can press the rubber material in the material storage cavity through the first hot nozzle (153) and the second hot nozzle (154) into the two core assemblies (3) for injection molding.
2. A fan frame hot runner no-sprue injection mold according to claim 1, characterized in that: A first heating tube (142) and a second heating tube (143) are also embedded on the outside of the heat diverter plate (14). The first heating tube (142) and the second heating tube (143) are respectively arranged in a winding manner on the upper and lower sides of the heat diverter plate (14). Two groups of connectors (144) are provided on the two outer sides of the heat diverter plate (14). The first heating tube (142) and the second heating tube (143) are respectively electrically connected to their corresponding connectors (144).
3. The fan frame hot runner non-sprue injection mold according to claim 1, characterized in that: It also includes two front core pulling assemblies (4), two rear core pulling assemblies (5) and two side core pulling assemblies (6), each of the front core pulling assemblies (4), the rear core pulling assemblies (5) and the side core pulling assemblies (6) are respectively located in the top groove of the lower mold core (21), and each core assembly (3) includes a front mold core (31), a rear mold core (32), an upper mold core (33) and a lower mold core (34), the front mold core (31) and the rear mold core (32) are respectively arranged relatively between the upper mold core (33) and the lower mold core (34), the inner side edges of the front mold core (31) and the rear mold core (32) cooperate to form an oblique groove (30) for the side core pulling assembly to be placed, the outer end of the front mold core (31) is provided with a front core pulling assembly (4), and the outer end of the rear mold core (32) is provided with a rear core pulling assembly (5).
4. A fan frame hot runner non-sprue injection mold according to claim 3, characterized in that: The front core pulling assembly (4) comprises a front core pulling slider (41) and a front core pulling guide column (42); the interior of the front core pulling slider (41) is provided with a front core pulling guide plug hole (43) which is obliquely penetrated from the direction away from the rear core pulling assembly (5) from top to bottom; the front core pulling guide column (42) is obliquely inserted into the front core pulling guide plug hole (43); the rear core pulling assembly (5) comprises a rear core pulling slider (51) and a rear core pulling guide column (52); the interior of the rear core pulling slider (51) is provided with a rear core pulling guide plug hole (53) which is obliquely penetrated from the direction away from the front core pulling assembly (4) from top to bottom; the rear core pulling guide column (52) The side core pulling assembly (6) is obliquely inserted in the rear core pulling guide hole (53), and includes a side core pulling slider (61), a side core pulling guide column (62) and a side core pulling forming protrusion (63). The interior of the side core pulling slider (61) is provided with a side core pulling guide hole (64) obliquely penetrating from top to bottom. The side core pulling guide column (62) is obliquely inserted in the side core pulling guide hole (64). One end of the side core pulling forming protrusion (63) close to the front mold core (31) and the rear mold core (32) is inserted into the oblique groove (30), and the other end of the side core pulling forming protrusion (63) is fixedly connected to the side core pulling slider (61).
5. A fan frame hot runner non-sprue injection mold according to claim 4, characterized in that: The lower mold core (21) is provided with a plurality of slide grooves (211) for each front core-pulling slider (41), rear core-pulling slider (51) and side core-pulling slider (61) to slide relative to each other, and each front core-pulling slider (41), rear core-pulling slider (51) and side core-pulling slider (61) can be installed in the slide groove (211) in a translational manner.
6. The fan frame hot runner non-sprue injection mold according to claim 1, characterized in that: The lower die base (2) further comprises a lower die bottom plate (22), an ejector bottom plate (23), an ejector panel (24), an ejector (25), an ejector plate guide column (26), a square iron (27), and a limit column (28); the square iron (27) is provided in two pieces and is installed at intervals between the lower die bottom plate (22) and the lower die core (21); the top groove of the lower die core (21) is provided as an injection lower die (210); the ejector (25) is provided in a plurality and is installed on the ejector bottom plate through the ejector panel (24). The top of the plate (23) is provided with a plurality of ejector pins (25), and the upper ends of the plurality of ejector pins (25) can extend into the lower injection mold (210) after passing through the lower mold core (21); the ejector pin plate guide pins (26) are respectively arranged between the lower mold bottom plate (22) and the lower mold core (21); the ejector pin plate guide pins (26) pass through the ejector pin bottom plate (23) and the ejector pin panel (24); the limiting pins (28) are located between the lower mold bottom plate (22) and the lower mold core (21) and pass through the ejector pin bottom plate (23) and the ejector pin panel (24).
7. The fan frame hot runner non-sprue injection mold according to claim 1, characterized in that: A plurality of first hot runners (111) are provided inside the top plate (11), and a plurality of second hot runners (121) are provided inside the fixed plate (12).
8. The fan frame hot runner non-sprue injection mold according to claim 1, characterized in that: The upper mold core (13) is provided with a plurality of first cooling liquid flow channels (131) inside, and the lower mold core (21) is provided with a plurality of second cooling liquid flow channels (212) inside.