A helical cooling structure for a two-color injection mold

Abstract

The utility model provides a kind of double-color injection mould helical cooling structure, including outer frame, batten, bar, the vertical batten is fixedly connected between the outer frame, the inner side fixedly connected with bar of outer frame, the inner end fixedly connected with mould core of bar, spiral groove is set up in the outer surface of mould core, cooling pipe is installed in the inner side of spiral groove, the cooling pipe is helical shape.The utility model has the advantages that cooling liquid enters cooling pipe from input pipe, after absorbing the heat of mould core, part of heat is transferred to fin by tab.Fin utilizes the open space formed by outer frame and batten to carry out convection heat dissipation, reduce cooling liquid temperature, to improve its heat-absorbing capacity again, and the cooling effect of the cooling structure is better.Fin utilizes the open space formed by outer frame and batten to carry out convection heat dissipation, reduce cooling liquid temperature, to improve its heat-absorbing capacity again.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a spiral cooling structure for a two-color injection mold. Background Technology

[0002] Traditional two-color injection molds typically employ cooling channels arranged in straight lines or simple curves, resulting in uneven cooling and low efficiency. The coolant absorbs heat as it flows through the mold but cannot dissipate it quickly, leading to localized temperature increases and impacting the injection molding cycle and product quality. Therefore, a novel structure combining spiral cooling with auxiliary heat dissipation is urgently needed. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0004] Therefore, one objective of this utility model is to propose a spiral cooling structure for a two-color injection mold to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of the present invention provides a spiral cooling structure for a two-color injection mold, comprising an outer frame, ribs, and rods, wherein vertical ribs are fixedly connected between the outer frames, and rods are fixedly connected to the inner side of the outer frames;

[0006] The inner end of the rod is fixedly connected to a mold core, and the outer surface of the mold core is provided with a spiral groove;

[0007] A cooling pipe is installed on the inner side of the spiral groove, and the cooling pipe is spiral in shape;

[0008] An input pipe is fixedly connected to the top end of the cooling pipe, and an output pipe is fixedly connected to the bottom end of the cooling pipe.

[0009] A connecting piece is fixedly connected to the outer surface of the cooling pipe, and a heat sink is fixedly connected to the end of the connecting piece. The heat sink is arranged in a spiral array about the axis of the mold core.

[0010] Preferably, in any of the above solutions, the outer frame is welded to the reinforcing ribs, and the rods are welded to the outer frame and the mold core.

[0011] The above technical solution employs the following support structure for the outer frame and ribs: Vertical ribs are welded between the outer frame sections to form regularly distributed spatial units. Rods are welded to the inner side of the outer frame, with the inner ends of the rods fixed to the mold core. The three-dimensional frame formed by the outer frame and ribs not only provides structural support but also provides heat dissipation space for the heat sink.

[0012] Spiral cooling pipe integrated with the mold core: Spiral grooves are formed on the outer surface of the mold core, and spiral copper cooling pipes are embedded in the grooves and fixed by bonding or welding. The spiral direction of the cooling pipes is completely consistent with the spiral grooves, ensuring that the coolant flows evenly along the surface of the mold core and maximizing the contact heat absorption area.

[0013] The heat sink and cooling pipe are linked in a coordinated design: multiple tabs are welded or bonded to the outer surface of the cooling pipe, and the ends of the tabs are integrally formed with a spiral array of copper heat sinks. The thickness of the heat sink is 0.4-0.5cm, and its spiral layout is in the same direction as the core axis, and all of them are located inside the space enclosed by the ribs.

[0014] Coolant heat dissipation mechanism: Coolant enters the cooling pipe from the inlet pipe, absorbs heat from the mold core, and some of the heat is transferred to the heat sink through the connecting plates. The heat sink utilizes the open space formed by the outer frame and ribs to dissipate heat through convection, reducing the coolant temperature and thus enhancing its ability to absorb heat again.

[0015] Preferably, of any of the above embodiments, the cooling pipe is made of copper, and the direction of the cooling pipe is the same as the direction of the spiral groove.

[0016] Technical effect

[0017] High-efficiency cooling and heat dissipation synergy: The cooling pipe is directly attached to the spiral groove of the mold core to achieve rapid heat absorption; the heat sink is connected to the cooling pipe through the connector to conduct some of the heat to the external space, avoiding the decrease in cooling efficiency caused by excessively high coolant temperature.

[0018] Compact structure and uniform heat dissipation: The spiral array layout of the heat sink matches the space of the ribs to form a multi-level heat dissipation channel, ensuring that heat is evenly diffused along the mold frame and avoiding local overheating.

[0019] Material optimization: Copper cooling pipes and heat sinks have high thermal conductivity, and the welding process ensures heat transfer efficiency. The heat sinks with a thickness of 0.4-0.5cm ensure strength while also accommodating heat dissipation area.

[0020] Preferably, in any of the above embodiments, the outer surface of the cooling pipe is bonded or welded to the inner side of the spiral groove.

[0021] Preferably, in any of the above solutions, the connecting piece is welded or bonded to the outer surface of the cooling pipe, and the connecting piece is integrally formed with the heat sink.

[0022] During assembly, the outer frame and ribs are first welded together to form a supporting framework. Then, the rods are welded to the inside of the outer frame and connected to the mold core. The pre-formed spiral cooling pipes are embedded into the spiral grooves of the mold core and fixed by welding or bonding. Finally, the connecting pieces and heat sinks are integrally formed and welded to the surface of the cooling pipes, ensuring the heat sinks are located within the space enclosed by the ribs. After the coolant circulates through the inlet pipe into the cooling pipes, heat is continuously dissipated through the heat sinks, achieving efficient cooling.

[0023] This invention is applicable to mass production scenarios of two-color injection molds, which can shorten the cooling time by about 20%-30% and improve the consistency of product molding, resulting in significant economic benefits.

[0024] Preferably, the heat sink and the connecting piece are made of copper, and the thickness of the heat sink is 0.4-0.5 cm.

[0025] Preferably, in any of the above solutions, the heat sink is located inside the space enclosed by the ribs.

[0026] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0027] This two-color injection mold features a spiral cooling structure. Through the coordinated arrangement of an outer frame, ribs, rods, spiral grooves, cooling pipes, input pipes, output pipes, connecting plates, and heat sinks, multiple connecting plates are welded or bonded to the outer surface of the cooling pipes. The ends of these connecting plates are integrally formed with a spirally arrayed copper heat sink. The heat sinks are 0.4-0.5 cm thick, and their spiral layout is aligned with the mold core axis, entirely located within the space enclosed by the ribs. Coolant heat dissipation mechanism: Coolant enters the cooling pipes from the input pipe, absorbs heat from the mold core, and some of this heat is transferred to the heat sinks through the connecting plates. The heat sinks utilize the open space formed by the outer frame and ribs for convection heat dissipation, lowering the coolant temperature and thus enhancing its ability to absorb heat again. This cooling structure provides superior cooling performance.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0031] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0032] Figure 3 This is a structural schematic diagram of the present invention from a third-view perspective;

[0033] Figure 4 This is a front view structural diagram of the present invention.

[0034] In the diagram: 1-Outer frame, 2-Rib, 3-Rack, 4-Mold core, 5-Spiral groove, 6-Cooling pipe, 7-Input pipe, 8-Output pipe, 9-Connector, 10-Heat sink. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] like Figure 1-4 As shown, the spiral cooling structure of this two-color injection mold includes an outer frame 1, ribs 2, and rods 3. Vertical ribs 2 are fixedly connected between the outer frames 1, and rods 3 are fixedly connected to the inner side of the outer frame 1.

[0038] The inner end of the rod 3 is fixedly connected to the mold core 4, and the outer surface of the mold core 4 is provided with a spiral groove 5;

[0039] A cooling pipe 6 is installed on the inner side of the spiral groove 5. The cooling pipe 6 is spiral in shape.

[0040] An input pipe 7 is fixedly connected to the top end of the cooling pipe 6, and an output pipe 8 is fixedly connected to the bottom end of the cooling pipe 6.

[0041] A connector 9 is fixedly connected to the outer surface of the cooling pipe 6, and a heat sink 10 is fixedly connected to the end of the connector 9. The heat sink 10 is arranged in a spiral array about the axis of the mold core 4.

[0042] Example 1: The outer frame 1 is welded to the reinforcing ribs 2, and the rods 3 are welded to the outer frame 1 and the mold core 4. Support structure of the outer frame 1 and reinforcing ribs 2: Vertical reinforcing ribs 2 are welded between the outer frame 1 to form regularly distributed spatial units. Rods 3 are welded to the inner side of the outer frame 1, and the mold core 4 is fixed to the inner end of the rods 3. The three-dimensional frame formed by the outer frame 1 and reinforcing ribs 2 not only provides structural support but also provides heat dissipation space for the heat sink 10.

[0043] Spiral cooling pipe integrated with mold core: Spiral grooves 5 are formed on the outer surface of mold core 4, and spiral copper cooling pipes 6 are embedded in the grooves and fixed by bonding or welding. The spiral direction of cooling pipe 6 is completely consistent with the spiral grooves 5, ensuring that the coolant flows evenly along the surface of mold core 4 and maximizing the contact heat absorption area.

[0044] Example 2: The cooling pipe 6 is made of copper, and its orientation is the same as that of the spiral groove 5. High-efficiency cooling and heat dissipation are synergistic: The cooling pipe 6 directly fits into the spiral groove 5 of the mold core 4, achieving rapid heat absorption; the heat sink 10 is connected to the cooling pipe 6 via the connector 9, transferring some heat to the external space, thus preventing a decrease in cooling efficiency due to excessively high coolant temperature.

[0045] Compact structure and uniform heat dissipation: The spiral array layout of the heat sink 10 is matched with the space of the rib 2 to form a multi-level heat dissipation channel, ensuring that heat is evenly diffused along the mold frame and avoiding local overheating.

[0046] Material optimization: The copper cooling pipe 6 and heat sink 10 have high thermal conductivity. Combined with welding technology, heat transfer efficiency is ensured. The heat sink, with a thickness of 0.4-0.5cm, ensures both strength and heat dissipation area. The outer surface of the cooling pipe 6 is bonded or welded to the inner side of the spiral groove 5. The connecting piece 9 is welded or bonded to the outer surface of the cooling pipe 6, and the connecting piece 9 and the heat sink 10 are integrally formed.

[0047] The working principle of this utility model is as follows:

[0048] During assembly, the outer frame 1 and ribs 2 are first welded together to form a supporting frame. Then, rods 3 are welded to the inside of the outer frame 1 and connected to the mold core 4. The pre-formed spiral cooling pipe 6 is embedded into the spiral groove 5 of the mold core 4 and fixed by welding or bonding. Finally, the connecting piece 9 and the heat sink 10 are integrally formed and welded to the surface of the cooling pipe 6, ensuring that the heat sink 10 is located within the space enclosed by the ribs 2. After the coolant circulates through the inlet pipe 7 into the cooling pipe 6, heat is continuously dissipated through the heat sink 10, achieving efficient cooling.

[0049] Compared with the prior art, the present invention has the following advantages:

[0050] This two-color injection mold features a spiral cooling structure. The structure comprises an outer frame 1, ribs 2, rods 3, spiral grooves 5, cooling pipes 6, input pipes 7, output pipes 8, connecting plates 9, and heat sinks 10. Multiple connecting plates 9 are welded or bonded to the outer surface of the cooling pipes 6. The ends of the connecting plates 9 are integrally formed with a spiral array of copper heat sinks 10. The heat sinks 10 are 0.4-0.5 cm thick, and their spiral arrangement is aligned with the axis of the mold core 4, all located within the space enclosed by the ribs 2. Coolant cooling mechanism: Coolant enters the cooling pipes 6 from the input pipes 7, absorbs heat from the mold core 4, and some of the heat is transferred to the heat sinks 10 through the connecting plates 9. The heat sinks 10 utilize the open space formed by the outer frame 1 and the ribs 2 for convection cooling, reducing the coolant temperature and thus enhancing its ability to absorb heat again. This cooling structure provides superior cooling performance.

Claims

1. A helical cooling structure for a two-color injection mold, characterized by, Including outer frame (1), batten (2), rod piece (3), the outer frame (1) between fixed connection has vertical batten (2), the inner side fixed connection of outer frame (1) has rod piece (3);The inner end fixed connection of rod piece (3) has mold core (4), the outer surface of mold core (4) is equipped with spiral groove (5); The inner side of spiral groove (5) is installed cooling pipe (6), cooling pipe (6) is spiral; The top end fixed connection of cooling pipe (6) has input pipe (7), the bottom end fixed connection of cooling pipe (6) has output pipe (8); The outer surface fixed connection of cooling pipe (6) has tab (9), the end fixed connection of tab (9) has radiating fin (10), and radiating fin (10) is about the axis spiral array of mold core (4).

2. The spiral cooling structure of a two-color injection mold according to claim 1, wherein: The outer frame (1) is welded with batten (2), and the rod piece (3) is welded with the outer frame (1) and the mold core (4).

3. The spiral cooling structure of a two-color injection mold according to claim 2, wherein: The material of cooling pipe (6) is copper, and the trend of cooling pipe (6) is same with the trend of spiral groove (5).

4. The spiral cooling structure of a two-color injection mold according to claim 3, wherein: The outer surface of cooling pipe (6) is bonded or welded with the inner side of spiral groove (5).

5. The spiral cooling structure of a two-color injection mold according to claim 4, wherein: The outer surface of tab (9) is welded or bonded with cooling pipe (6), and tab (9) is integrally formed with radiating fin (10).

6. The spiral cooling structure of a two-color injection mold according to claim 5, wherein: The material of radiating fin (10) and tab (9) is copper, and the thickness of radiating fin (10) is 0.4-0.5cm.

7. The spiral cooling structure of a two-color injection mold according to claim 6, wherein: Radiating fin (10) is located in the space inside surrounded by batten (2).

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