General mold sprue bush
By adopting a combined structure of metal sleeves and ceramic bushings in the gate sleeve and setting a heat dissipation runner, the problems of wear and heat dissipation efficiency of the gate sleeve are solved, wear resistance and efficient heat dissipation are achieved, production costs are reduced and production efficiency is improved.
Patent Information
- Application Number
- CN202421584301.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The inner holes of existing gate sleeves are prone to wear and short production life, resulting in high production costs and low heat dissipation efficiency, which affects production efficiency.
A metal sleeve and a ceramic bushing are arranged coaxially. The ceramic bushing is nested in the metal sleeve, and a first and second heat dissipation runners are arranged axially spaced on the side walls of the metal sleeve. The feed port and the discharge port are in communication with the external cooling medium circulation device.
It improves the wear resistance and heat dissipation efficiency of the gate sleeve, which quickly cools down the gate sleeve, reduces the curing time of aluminum liquid, reduces production costs, and improves production efficiency.
Smart Images
Figure CN222970956U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a universal mold sprue bushing. Background Art
[0002] The main function of the sprue bushing is to fit with the pouring barrel, and through the high-speed injection of the punch, the molten aluminum is quickly filled into the aluminum product forming mold. And in the process of solidification under high pressure, the above process is the high-pressure casting process.
[0003] In the prior art, the set production life of the sprue bushing is 20,000 times, that is, the product casting and forming can be carried out 20,000 times. In the actual production process, it is found that the existing sprue bushings are generally made of metal materials, and the inner holes are easy to wear. When their production life reaches 15,000 times, they are scrapped and need to be replaced, resulting in too high production costs. In addition, after the casting is completed, the sprue bushing dissipates heat slowly, resulting in a long time for the aluminum liquid at the sprue bushing to condense and solidify, and the production efficiency is low. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a universal mold sprue bushing, which improves the wear resistance of the inner hole of the sprue bushing and the heat dissipation efficiency, reduces the production cost, and improves the production efficiency.
[0005] To achieve the above purpose, the utility model provides a universal mold sprue bushing, which includes a metal sleeve and a ceramic bushing arranged coaxially. The ceramic bushing is embedded in the metal sleeve. One end side wall of the metal sleeve is provided with an opening for communicating with the mold cavity. The side wall of the metal sleeve is provided with a first heat dissipation channel and a second heat dissipation channel at intervals along the axial direction. The first heat dissipation channel is arranged around the axis of the metal sleeve, and the second heat dissipation channel is arranged along the axial direction of the metal sleeve. The feed ports and discharge ports of the first heat dissipation channel and the second heat dissipation channel are communicated with an external cooling medium circulation device.
[0006] Furthermore, a conical diversion port is arranged on the inner wall of the metal sleeve near the opening.
[0007] Furthermore, the included angle between the generatrix of the conical diversion port and the axis of the conical diversion port is 1° - 5°.
[0008] Furthermore, an installation step is arranged at the other end of the metal sleeve facing away from the opening, and installation holes are evenly distributed in a ring on the installation step.
[0009] Furthermore, there are multiple first heat dissipation channels, and they are arranged at intervals along the axial direction of the metal sleeve.
[0010] Furthermore, the cross-sectional shape of the first heat dissipation channel is hexagonal.
[0011] Further, the axes of the inlets and outlets of the first heat dissipation channel and the second heat dissipation channel are perpendicular to the axis of the metal sleeve.
[0012] Further, a limiting step for positioning with the mold cavity is provided at one end of the metal sleeve close to the opening.
[0013] Further, the wall thickness of the ceramic bushing is greater than or equal to 10 mm.
[0014] Further, the metal sleeve and the ceramic bushing are fixed by welding.
[0015] Compared with the prior art, the universal mold gate sleeve of the embodiment of the present invention has the following beneficial effects: The metal sleeve and the ceramic bushing are coaxially arranged, and the ceramic bushing is embedded in the metal sleeve, improving the wear resistance of the gate sleeve. In addition, a first heat dissipation channel and a second heat dissipation channel are arranged at intervals along the axial direction on the side wall of the metal sleeve. The first heat dissipation channel is arranged around the axis of the metal sleeve, and the second heat dissipation channel is arranged along the axial direction of the metal sleeve. The inlets and outlets of the first heat dissipation channel and the second heat dissipation channel are communicated with an external cooling medium circulation device, which can improve the heat dissipation efficiency of the gate sleeve, quickly cool down the gate sleeve, reduce the solidification time of the aluminum liquid, and improve the production efficiency. Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of the universal mold gate sleeve of the embodiment of the present invention;
[0017] Figure 2 is a cross-sectional view of the universal mold gate sleeve of the embodiment of the present invention;
[0018] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in
[0019] Figure 4 is Figure 1 a cross-sectional view taken along line B-B in
[0020] Figure 5 is Figure 2 a cross-sectional view taken along line C-C in
[0021] In the figure, 1, metal sleeve; 2, ceramic bushing; 11, opening; 12, first heat dissipation channel; 13, second heat dissipation channel; 14, conical diversion port; 15, installation step; 16, limiting step. Detailed Embodiments
[0022] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.
[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc. in the present utility model is based on the positional relationship shown in the drawings. These terms are only used for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0024] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are used to describe various information in the present utility model, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.
[0025] Refer to Figure 1 , Figure 2 A general mold gate bushing of a preferred embodiment of the present utility model includes a metal sleeve 1 and a ceramic bushing 2 arranged coaxially. The ceramic bushing 2 is embedded in the metal sleeve 1. The ceramic bushing 2 has good heat resistance and wear resistance compared with the metal sleeve 1, so as to improve the service life of the gate bushing. Specifically, an opening 11 is provided on the side wall of one end of the metal sleeve 1 for communicating with the mold cavity. In order to facilitate heat dissipation of the gate bushing, the side wall of the metal sleeve 1 is provided with a first heat dissipation channel 12 and a second heat dissipation channel 13 at intervals along the axial direction. In this embodiment, the first heat dissipation channel 12 is arranged around the axis of the metal sleeve 1, and the second heat dissipation channel 13 is arranged along the axial direction of the metal sleeve 1. The inlets and outlets of the first heat dissipation channel 12 and the second heat dissipation channel 13 are communicated with an external cooling medium circulation device.
[0026] That is, when heat dissipation is required, the cooling medium flows in through the inlet of the first heat dissipation channel 12, flows out from the outlet of the first heat dissipation channel 12, and circulates and dissipates heat inside the cooling medium circulation device. Similarly, the cooling medium flows in through the inlet of the second heat dissipation channel 13, flows out from the outlet of the second heat dissipation channel 13, and circulates and dissipates heat inside the cooling medium circulation device. Specifically, in order to facilitate the arrangement of the first heat dissipation channel 12 and the second heat dissipation channel 13, the axes of the inlets and outlets of the first heat dissipation channel 12 and the second heat dissipation channel 13 are perpendicular to the axis of the metal sleeve 1. In this embodiment, a reamer is used for finishing the first heat dissipation channel 12 and the second heat dissipation channel 13.
[0027] Furthermore, in this embodiment, when the aluminum liquid flows in the gate bushing, refer to Figure 2, The molten aluminum flows into the lower end of the metal sleeve 1 and flows out from the opening 11 into the mold cavity. To facilitate the outflow of the molten aluminum from the metal sleeve 1, a conical diversion port 14 is provided on the inner wall of the metal sleeve 1 near the opening 11. Further, the angle between the generatrix of the conical diversion port 14 and the axis of the conical diversion port 14 is 1° - 5°. Preferably, in this embodiment, the angle between the generatrix of the conical diversion port 14 and the axis of the conical diversion port 14 is 3°.
[0028] Further, to facilitate the fixed connection between the sprue bushing and the mold, an installation step 15 is provided at the other end of the metal sleeve 1 facing away from the opening 11, and installation holes are evenly distributed in a ring on the installation step 15. Further, to facilitate the positioning during the installation of the sprue bushing, a limiting step 16 for positioning with the mold cavity is provided at one end of the metal sleeve 1 near the opening 11.
[0029] Furthermore, to further improve the heat dissipation efficiency, in this embodiment, there are multiple first heat dissipation channels 12, which are arranged at intervals along the axial direction of the metal sleeve 1. Further, referring to Figure 3 , Figure 4 , Figure 5 , the cross-sectional shape of the first heat dissipation channel 12 is hexagonal, so as to improve the heat dissipation efficiency of the sprue bushing, and the cross-sectional shape can be set according to the actual heat dissipation requirements.
[0030] Furthermore, in this embodiment, to enable the ceramic bushing 2 to have a certain structural strength, the wall thickness of the ceramic bushing 2 is greater than or equal to 10 mm. In this embodiment, to ensure the connection strength between the metal sleeve 1 and the ceramic bushing 2, the metal sleeve 1 and the ceramic bushing 2 are fixed by welding. In some embodiments, to further reduce the production cost, the scrapped sprue bushing can be used for secondary processing and utilization, that is, for the existing sprue bushing with only the metal sleeve 1 and its inner hole worn, the inner hole is reamed, and then the ceramic bushing 2 is embedded, which can meet the production requirements. Specifically, the inner diameter of the metal sleeve 1 is 140 mm, the outer diameter of the ceramic bushing is 140 mm, and the inner diameter is 130 mm, which can be designed according to the actual requirements.
[0031] In summary, the embodiment of the present utility model provides a general mold sprue bushing, in which the metal sleeve 1 and the ceramic bushing 2 are coaxially arranged, and the ceramic bushing 2 is embedded in the metal sleeve 1 to improve the wear resistance of the sprue bushing. In addition, a first heat dissipation channel 12 and a second heat dissipation channel 13 are arranged at intervals along the axial direction on the side wall of the metal sleeve 1. The first heat dissipation channel 12 is arranged around the axis of the metal sleeve 1, and the second heat dissipation channel 13 is arranged along the axial direction of the metal sleeve 1. The inlets and outlets of the first heat dissipation channel 12 and the second heat dissipation channel 13 are communicated with an external cooling medium circulation device, which can improve the heat dissipation efficiency of the sprue bushing, quickly cool down the sprue bushing, reduce the solidification time of the molten aluminum, and improve the production efficiency.
[0032] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.
Claims
1. A universal mold sprue bushing, characterized in that: It includes a coaxially arranged metal sleeve and a ceramic bushing, the ceramic bushing is embedded in the metal sleeve, an opening is provided on the side wall of one end of the metal sleeve for communicating with the mold cavity, a first heat dissipation channel and a second heat dissipation channel are provided on the side wall of the metal sleeve at intervals along the axial direction, the first heat dissipation channel is arranged around the axis of the metal sleeve, and the second heat dissipation channel is arranged along the axial direction of the metal sleeve, and the feed port and the discharge port of the first heat dissipation channel and the second heat dissipation channel are connected to an external cooling medium circulation device.
2. The universal mold sprue bushing according to claim 1, characterized in that: A conical guide port is provided on the inner wall of one end of the metal sleeve close to the opening.
3. The universal mold sprue bushing according to claim 2, characterized in that: The angle between the generatrix of the tapered guide port and the axis of the tapered guide port is 1°-5°.
4. The universal mold sprue bushing according to claim 1, characterized in that: The other end of the metal sleeve facing away from the opening is provided with a mounting step, and the mounting step is evenly distributed with mounting holes in a circular shape.
5. The universal mold sprue bushing according to claim 1, characterized in that: There are a plurality of first heat dissipation channels, which are arranged at intervals along the axial direction of the metal sleeve.
6. The universal mold sprue bushing according to claim 5, characterized in that: The cross-sectional shape of the first heat dissipation channel is hexagonal.
7. The universal mold sprue bushing according to claim 1, characterized in that: The axes of the feed opening and the discharge opening of the first heat dissipation channel and the second heat dissipation channel are arranged perpendicular to the axis of the metal sleeve.
8. The universal mold sprue bushing according to claim 1, characterized in that: One end of the metal sleeve close to the opening is provided with a limiting step for positioning with the mold cavity.
9. The universal mold sprue bushing according to claim 1, characterized in that: The wall thickness of the ceramic bushing is greater than or equal to 10 mm.
10. The universal mold sprue bushing according to claim 1, characterized in that: The metal sleeve and the ceramic bushing are fixed by welding.