Hot runner system

Abstract

The invention belongs to the technical field of hot runners, and discloses a hot runner system. The hot runner system comprises a splitter plate and an upper mold plate, and a plurality of supporting pads are mounted at the top of the splitter plate and jointly supported between the splitter plate and the upper mold plate. The supporting pad comprises a ceramic base and a cushion block, the ceramic base is fixedly connected to the splitter plate, the cushion block is installed on the top of the ceramic base, and a heat insulation channel is formed in the supporting pad and penetrates through the supporting pad in the horizontal direction. Through the combined action of the ceramic base and the heat insulation channel, the heat loss of the splitter plate is effectively reduced, so that the uniform flowing of a sizing material in the splitter plate is ensured, the phenomena of solidification, flow channel blockage and the like are avoided, and the quality stability of a prepared product is effectively improved. Moreover, heat transfer from the splitter plate to the upper mold plate is fully reduced, so that the upper mold plate cannot deform due to heating, and the stability and the injection molding precision of the hot runner system are ensured.

Description

Technical Field

[0001] This invention relates to the field of hot runner technology, and more particularly to a hot runner system. Background Technology

[0002] In existing technologies, hot runner systems have become a core component of complex injection molds. Specifically, a hot runner system generally includes a manifold and an upper mold platen. The manifold, as the melt distribution center, needs to operate under high temperature and high pressure for extended periods, while the upper mold platen, as the mounting reference structure, needs to withstand enormous clamping forces at room temperature.

[0003] As shown above, the manifold and upper mold plate are supported by support blocks. However, the heat from the manifold is easily transferred to the upper mold plate through the support blocks, resulting in significant heat loss from the manifold. Consequently, the rubber compound inside the manifold is prone to uneven flow or solidification and blockage of the runner, leading to unstable product quality. Furthermore, the upper mold plate can deform due to heat, affecting the stability of the hot runner system and injection precision. Summary of the Invention

[0004] The purpose of this invention is to provide a hot runner system to solve the problems of uneven flow or solidification of the rubber material inside the manifold, which can lead to unstable product quality. In addition, the upper mold plate can also deform due to heat, thus affecting the stability of the hot runner system and the injection precision.

[0005] To achieve this objective, the present invention adopts the following technical solution: Hot runner system, including: A flow divider plate and an upper template, wherein a plurality of support pads are installed on the top of the flow divider plate, and the plurality of support pads together support the flow divider plate and the upper template; wherein: The support pad includes a ceramic base and a pad block. The ceramic base is fixedly connected to the diverter plate, and the pad block is installed on the top of the ceramic base. The support pad forms a heat insulation channel that runs horizontally through the support pad.

[0006] Preferably, the ceramic base has a first heat insulation groove on the side facing the diversion plate, and the first heat insulation groove extends horizontally through the ceramic base.

[0007] Preferably, the ceramic base has a plurality of support columns on the side facing the diversion plate, and the plurality of support columns form the first heat insulation groove.

[0008] Preferably, several of the support columns are evenly arranged on one side of the ceramic base facing the diversion plate.

[0009] Preferably, the support pad is fixedly connected to the diverter plate by screws; wherein: The pad is provided with a first slot and a second slot. The shank of the screw passes through the second slot and screws the ceramic base and the diverter plate together. The head of the screw is accommodated in the first slot and there is a gap between the head of the screw and the upper template.

[0010] Preferably, the pad block is provided with a second heat insulation groove on the side facing the upper template, and the second heat insulation groove extends through the pad block in a horizontal direction.

[0011] Preferably, the second heat insulation groove is composed of a plurality of first grooves, which are evenly arranged around the axis of the first slot and extend radially along the first slot, and all the first grooves are in communication with the first slot.

[0012] Preferably, the pad has a third heat insulation groove on the side facing the ceramic base, and the third heat insulation groove extends horizontally through the pad.

[0013] Preferably, the third heat insulation groove is composed of a plurality of second grooves, which are evenly arranged around the axis of the second slot and extend radially along the second slot, and all the second grooves are in communication with the second slot.

[0014] Preferably, the ceramic base has a receiving groove on the side facing the pad, and the ceramic base covers the pad through the receiving groove.

[0015] The beneficial effects of this invention are: This invention uses a ceramic base for the portion of the support pad that contacts the manifold, and incorporates heat-insulating channels on the support pad to form an air insulation layer. The ceramic base and heat-insulating channels work together to significantly enhance the insulation effect of the support pad, effectively reducing the heat transferred from the manifold to the upper mold plate through the support pad. This reduces heat loss from the manifold, ensuring uniform flow of the material within the manifold and preventing solidification and blockage of the flow channels, thus significantly improving the quality stability of the resulting product. Furthermore, because this invention significantly reduces heat transfer from the manifold to the upper mold plate, the upper mold plate will not deform due to heat, ensuring the stability of the hot runner system and injection molding accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the hot runner system in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the hot runner system along the longitudinal section of the screw in an embodiment of the present invention; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a front view of the ceramic base in an embodiment of the present invention; Figure 5 This is a bottom view of the ceramic base in an embodiment of the present invention; Figure 6 This is a top view of the pad block in an embodiment of the present invention; Figure 7 This is a bottom view of the pad block in an embodiment of the present invention.

[0017] In the picture: 1. Diverter plate; 2. Upper template; 3. Support pad; 31. Ceramic base; 311. First heat insulation groove; 312. Support column; 313. Receiving groove; 32. Pad block; 321. First slot; 322. Second slot; 323. Second heat insulation groove; 3231. First groove section; 324. Third heat insulation groove; 3241. Second groove section; 325. Annular groove; 331. Rod section; 332. Head; 333. Gap. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] Please see Figures 1 to 7 This embodiment provides a hot runner system, which includes a manifold 1 and an upper template 2. A support pad 3 is installed on the top of the manifold 1, and the support pad 3 is supported between the manifold 1 and the upper template 2.

[0023] Understandably, in order to achieve stable support, several support pads 3 are installed on the top of the diverter plate 1, and the several support pads 3 together support the diverter plate 1 and the upper template 2.

[0024] Therefore, in this embodiment, the support pad 3 includes a ceramic base 31 and a pad 32. The ceramic base 31 is fixedly connected to the diversion plate 1, and the pad 32 is installed on the top of the ceramic base 31. Thus, this embodiment can provide heat insulation through the ceramic base 31, thereby effectively reducing the heat transferred from the diversion plate 1 to the template 2 through the support pad 3.

[0025] Moreover, the support pad 3 has a heat insulation channel that runs horizontally through the support pad 3, thereby forming an air insulation layer at the heat insulation channel. The air insulation layer can further enhance the heat insulation effect of the support pad 3, thereby more effectively reducing the heat transferred from the diversion plate 1 to the template 2 through the support pad 3.

[0026] Based on the above, this embodiment uses a ceramic base 31 as the part of the support pad 3 that contacts the manifold 1, and provides a heat insulation channel on the support pad 3 to form an air insulation layer. Thus, the ceramic base 31 and the heat insulation channel work together to significantly enhance the heat insulation effect of the support pad 3, effectively reducing the heat transferred from the manifold 1 to the upper mold plate 2 through the support pad 3. This effectively reduces heat loss from the manifold 1, ensuring uniform flow of the adhesive inside the manifold 1 and preventing solidification and blockage of the flow channels, thereby effectively improving the quality stability of the produced product. Furthermore, because this embodiment significantly reduces heat transfer from the manifold 1 to the upper mold plate 2, the upper mold plate 2 will not deform due to heat, thus ensuring the stability of the hot runner system and injection molding accuracy.

[0027] Furthermore, since the ceramic base 31 has excellent properties such as high temperature resistance and wear resistance, this embodiment can also improve the wear resistance and high temperature resistance of the support pad 3, thereby extending the service life of the support pad 3 and thus extending the service life of the hot runner system.

[0028] Furthermore, it is worth noting that since the pad 32 is placed on the ceramic base 31, the pad 32 can be made of low-cost materials such as stainless steel.

[0029] Therefore, this embodiment overcomes the problems of high ceramic processing difficulty and high production cost by designing the support pad 3 as a structure composed of a ceramic base 31 and a pad block 32. Specifically, in the actual production process, when it is necessary to adjust the height of the support pad 3, it is only necessary to replace the pad block 32 with one of different heights or to modify the pad block 32, thereby reducing production costs and the difficulty of maintaining the support pad 3.

[0030] Based on the above description, in this embodiment, a first heat insulation groove 311 is provided on the side of the ceramic base 31 facing the diversion plate 1. The first heat insulation groove 311 penetrates the ceramic base 31 horizontally. Thus, this embodiment can form a first heat insulation channel on the side of the ceramic base 31 facing the diversion plate 1, thereby forming a first air heat insulation layer on the side of the ceramic base 31 facing the diversion plate 1, thereby further enhancing the heat insulation effect of the ceramic base 31, so as to fully reduce the heat transferred from the diversion plate 1 to the template 2 through the ceramic base 31.

[0031] For example, in this embodiment, a plurality of support columns 312 are provided on the side of the ceramic base 31 facing the diversion plate 1, and a first heat insulation groove 311 is formed between the plurality of support columns 312. That is, in this embodiment, the side of the ceramic base 31 facing the diversion plate 1 has a honeycomb structure design, which not only improves the structural strength of the ceramic base 31, but also further increases the groove volume of the first heat insulation groove 311, thereby increasing the volume of the first air heat insulation layer, so as to more effectively enhance the heat insulation effect of the ceramic base 31.

[0032] Furthermore, since the ceramic base 31 and the diversion plate 1 are in point contact, this embodiment can reduce the contact area between the ceramic base 31 and the diversion plate 1, thereby reducing the heat conduction area between the ceramic base 31 and the diversion plate 1, and thus more effectively reducing the heat transferred from the diversion plate 1 to the template 2 through the ceramic base 31.

[0033] In addition, several support columns 312 are evenly arranged on the side of the ceramic base 31 facing the diversion plate 1, thereby ensuring that the ceramic base 31 is subjected to uniform force, so that the support pad 3 can be stably supported between the diversion plate 1 and the upper template 2.

[0034] Based on the above, this embodiment can effectively achieve heat insulation by means of the ceramic base 31 and the first heat insulation groove 311 disposed on the ceramic base 31. Moreover, since this embodiment reduces the heat conduction area between the ceramic base 31 and the diversion plate 1, this embodiment can more effectively reduce the heat transfer from the diversion plate 1 to the template 2.

[0035] Furthermore, the support pad 3 is fixedly connected to the diverter plate 1 by screws. The pad block 32 is provided with a first slot 321 and a second slot 322. It can be understood that the first slot 321 and the second slot 322 are respectively shaped to the head 332 and the shank 331 of the screw. The shank 331 of the screw passes through the second slot 322 and screws the ceramic base 31 and the diverter plate 1 together. The head 332 of the screw is accommodated in the first slot 321, thereby achieving a fixed connection between the support pad 3 and the diverter plate 1.

[0036] Furthermore, the pad 32 and the diverter plate 1 are detachably connected, thereby enabling the pad 32 to be disassembled and maintained independently.

[0037] Furthermore, since the screw is directly screwed to the manifold 1, the heat of the manifold 1 can be transferred upward through the screw. In order to prevent the manifold 1 from transferring heat to the upper template 2 through the screw, there is a gap 333 between the head 332 of the screw and the upper template 2, so that an air insulation layer is also formed between the screw and the upper template 2, thereby reducing the heat transferred from the manifold 1 to the upper template 2 through the screw.

[0038] In addition, a second heat insulation groove 323 is provided on the side of the pad 32 facing the upper template 2. The second heat insulation groove 323 penetrates the pad 32 in a horizontal direction. Thus, in this embodiment, a second heat insulation channel can be formed on the side of the pad 32 facing the upper template 2, thereby forming a second air heat insulation layer on the side of the pad 32 facing the upper template 2, which further enhances the heat insulation effect of the support pad 3, so as to more fully reduce the heat transferred from the diversion plate 1 to the upper template 2 through the support pad 3.

[0039] For example, the second heat insulation groove 323 is composed of a plurality of first groove portions 3231, which are evenly arranged around the axis of the first slot 321 and all extend radially along the first slot 321. That is, in this embodiment, the pad 32 is provided with a radial star-shaped groove structure on the side facing the upper template 2. The star-shaped groove structure forms an air heat insulation layer, thereby more effectively enhancing the heat insulation effect of the support pad 3.

[0040] Moreover, the radial star-shaped groove structure significantly reduces the contact area between the pad 32 and the upper template 2, thereby greatly reducing the heat conduction area between the pad 32 and the upper template 2, and thus more effectively reducing the heat transferred from the pad 32 to the upper template 2. This can more fully reduce the heat transferred from the diversion plate 1 to the upper template 2 through the support pad 3.

[0041] Furthermore, it is worth noting that, based on the above description, since the heat of the manifold 1 can be transferred upward through the screws, in order to fully solve the problem of heat transfer upward through the screws of the manifold 1, in this embodiment, all the first grooves 3231 are connected to the first slots 321. Thus, the air in the first slots 321 and the second heat insulation grooves 323 can convect with the air around the support pad 3, thereby forming a stable temperature field between the first slots 321, the second heat insulation grooves 323 and the outer periphery of the support pad 3, thereby achieving heat insulation and heat preservation for the screws and the manifold 1, which in turn helps to further reduce the heat loss of the manifold 1 through the screws.

[0042] Based on the above, in this embodiment, although the screw will cause the manifold 1 to transfer heat to it rapidly due to its high thermal conductivity, this embodiment sets up a second heat insulation groove 323 to form a stable temperature field between the first slot 321, the second heat insulation groove 323 and the outer periphery of the support pad 3, thereby slowing down the heat transfer speed from the manifold 1 to the screw, thereby achieving heat insulation and heat preservation for the screw and the manifold 1, and thus reducing the heat loss of the manifold 1 to the outside through the screw.

[0043] Furthermore, since the second heat insulation groove 323 is a radial star-shaped groove structure, this embodiment can increase the convection path between the first slot 321 and the second heat insulation groove 323 and the outside air, thereby enabling the air in the first slot 321 and the second heat insulation groove 323 to quickly convect with the air around the support pad 3, thereby quickly forming a stable temperature field between the first slot 321, the second heat insulation groove 323 and the outer periphery of the support pad 3, and thus quickly achieving heat insulation and heat preservation of the screw and the manifold 1 after the hot runner system starts working, thereby more effectively reducing the heat lost by the manifold 1 through the screw.

[0044] Furthermore, in this embodiment, a third heat insulation groove 324 is provided on the side of the pad 32 facing the ceramic base 31. The third heat insulation groove 324 penetrates the pad 32 in a horizontal direction. Thus, this embodiment can form a third heat insulation channel between the pad 32 and the ceramic base 31, thereby forming a third air heat insulation layer between the pad 32 and the ceramic base 31, which further enhances the heat insulation effect of the support pad 3, so as to more fully reduce the heat transferred from the diversion plate 1 to the template 2 through the support pad 3.

[0045] In summary, this embodiment forms three heat insulation channels on the support pad 3 by setting the first heat insulation groove 311, the second heat insulation groove 323 and the third heat insulation groove 324, thereby fully enhancing the heat insulation effect of the support pad 3 and more effectively reducing the heat transferred from the diversion plate 1 to the template 2 through the support pad 3.

[0046] For example, the third heat insulation groove 324 is composed of a plurality of second groove portions 3241, which are evenly arranged around the axis of the second slot 322 and all extend radially along the second slot 322. That is, in this embodiment, the side of the pad 32 facing the ceramic base 31 is also provided with a radial star-shaped groove structure, which is also formed as an air insulation layer, thereby more effectively enhancing the heat insulation effect of the support pad 3.

[0047] Moreover, similarly, the radial star-shaped groove structure will significantly reduce the contact area between the pad 32 and the ceramic base 31, thereby significantly reducing the heat conduction area between the pad 32 and the ceramic base 31, and thus more effectively reducing the heat transferred from the ceramic base 31 to the pad 32. This will more fully reduce the heat transferred from the diversion plate 1 to the upper template 2 through the support pad 3.

[0048] In addition, it is worth noting that all the second slots 3241 are connected to the second slots 322. As a result, the air in the second slots 322 and the third heat insulation slots 324 can convect with the air around the support pad 3, thereby forming a stable temperature field between the second slots 322, the third heat insulation slots 324 and the outer periphery of the support pad 3. This further achieves heat insulation of the screws and the manifold 1, and further helps to reduce the heat loss of the manifold 1 through the screws.

[0049] Moreover, since the third heat insulation groove 324 is also a radial star-shaped groove structure, the air in the second slot 322 and the third heat insulation groove 324 can quickly convect with the air around the support pad 3, thereby quickly forming a stable temperature field between the second slot 322, the third heat insulation groove 324 and the outer periphery of the support pad 3, and thus quickly achieving heat insulation of the screw and the manifold 1 after the hot runner system starts working.

[0050] Combined with the second heat insulation groove 323, this embodiment can more quickly form a stable temperature field between the inside of the support pad 3 and the outer periphery of the support pad 3, thereby achieving heat insulation and heat preservation of the screw and the manifold 1 more quickly after the hot runner system starts working.

[0051] Furthermore, it is worth noting that an annular groove 325 is coaxially provided on the outer periphery of the second slot 322. The annular groove 325 is connected to the second slot 322, and all the second slot portions 3241 are connected to the annular groove 325. This allows a more stable temperature field to be formed on the outer periphery of the screw shank 331, thereby more effectively achieving heat insulation of the screw and the distributor plate 1.

[0052] Furthermore, the ceramic base 31 has a receiving groove 313 on the side facing the pad 32. The ceramic base 31 covers the pad 32 through the receiving groove 313, thereby positioning the pad 32. This facilitates alignment of the first slot 321 and the second slot 322 when assembling the support pad 3, thus making it easier to assemble the support pad 3.

[0053] Furthermore, the receiving groove 313 can also limit the position of the pad 32 to prevent the pad 32 from sliding or shifting on the ceramic base 31, thereby ensuring the stability and reliability of the support pad 3.

[0054] It is understandable that the height of the receiving groove 313 is lower than the height of the first groove 3231, so as to avoid affecting the air convection between the second slot 322 and the third heat insulation groove 324 and the outer periphery of the support pad 3.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. Hot runner system, characterized in that The utility model relates to a die casting die structure, including: The top of the flow distribution plate (1) is provided with a plurality of supporting pads (3), and the plurality of supporting pads (3) are supported between the flow distribution plate (1) and the upper die plate (2) in common. The supporting pad (3) includes a ceramic base (31) and a pad block (32), the ceramic base (31) is fixedly connected to the flow distribution plate (1), the pad block (32) is installed on the top of the ceramic base (31), and the supporting pad (3) is formed with a heat insulation channel, and the heat insulation channel penetrates the supporting pad (3) in the horizontal direction.

2. The hot- runner system of claim 1, wherein The side of the ceramic base (31) towards the flow distribution plate (1) is provided with a first heat insulation groove (311) penetrating the ceramic base (31) in the horizontal direction.

3. The hot- runner system of claim 2, wherein The side of the ceramic base (31) towards the flow distribution plate (1) is provided with a plurality of supporting columns (312), and the first heat insulation groove (311) is formed between the plurality of supporting columns (312).

4. The hot- runner system of claim 3, wherein The plurality of supporting columns (312) are evenly arranged on the side of the ceramic base (31) towards the flow distribution plate (1).

5. The hot- runner system of claim 1, wherein The supporting pad (3) is fixedly connected with the flow distribution plate (1) through a screw; wherein: The pad block (32) is provided with a first insertion groove (321) and a second insertion groove (322), the rod part (331) of the screw passes through the second insertion groove (322) and screws the ceramic base (31) and the flow distribution plate (1), the head part (332) of the screw is accommodated in the first insertion groove (321), and there is a gap (333) between the head part (332) of the screw and the upper die plate (2).

6. The hot- runner system of claim 5, wherein The side of the pad block (32) towards the upper die plate (2) is provided with a second heat insulation groove (323) penetrating the pad block (32) in the horizontal direction.

7. The hot-duct system of claim 6, wherein The second heat insulation groove (323) is composed of a plurality of first groove parts (3231), the plurality of first groove parts (3231) are evenly arranged around the axis of the first insertion groove (321) and extend in the radial direction of the first insertion groove (321) in common, and all the first groove parts (3231) are in communication with the first insertion groove (321).

8. The hot-duct system of claim 5, wherein, The side of the pad block (32) towards the ceramic base (31) is provided with a third heat insulation groove (324) penetrating the pad block (32) in the horizontal direction.

9. The hot-duct system of claim 8, wherein, The third heat insulation groove (324) is composed of a plurality of second groove parts (3241), the plurality of second groove parts (3241) are evenly arranged around the axis of the second insertion groove (322) and extend in the radial direction of the second insertion groove (322) in common, and all the second groove parts (3241) are in communication with the second insertion groove (322).

10. The hot-duct system of claim 1, wherein, The side of the ceramic base (31) towards the pad block (32) is provided with an accommodation groove (313), and the ceramic base (31) covers the pad block (32) through the accommodation groove (313).

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