Engine exhaust manifold casting equipment
By employing zoned cooling and waste heat utilization techniques in exhaust manifold casting equipment, the problem of thermal stress deformation caused by uneven cooling was solved, thereby improving the internal quality of the castings and production efficiency.
Patent Information
- Application Number
- CN202511957695.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-23
- Publication Date
- 2026-03-03
AI Technical Summary
The existing exhaust manifold casting mold has an unreasonable internal cooling water channel design, which leads to uneven cooling, causes uneven thermal stress deformation, and easily causes the casting to crack.
A cooling mechanism including first and second heat dissipation channels is adopted. Combined with control components, the temperature of different parts of the casting is detected by temperature sensors, and the flow rate of coolant is adjusted to achieve uniform cooling. Secondary circulation cooling is carried out by utilizing the waste heat of coolant.
It achieves consistent cooling rates in castings, reduces shrinkage cavities and porosity defects, improves internal density and dimensional accuracy, reduces scrap rates, and saves energy consumption.
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Figure CN121589247A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of casting equipment technology, and more specifically, to an engine exhaust manifold casting equipment. Background Technology
[0002] The exhaust manifold is connected to the engine cylinder block, collecting the exhaust gas from each cylinder and directing it into the main exhaust pipe. It is a branching pipe system. Its main requirements are to minimize exhaust resistance and prevent interference between cylinders.
[0003] Chinese invention patent application number 202010597530.4 discloses a forming mold for an automotive exhaust manifold and its implementation method. The mold includes an upper mold and a lower mold. The upper mold imprints an upper cavity on the upper sand box, and the lower mold imprints a lower cavity on the lower sand box. The upper and lower cavities are joined to form the gating system of the automotive exhaust manifold. The upper gating system of the upper mold includes a side riser module with a heating block on it. When the upper mold imprints the side riser on the upper sand box, the heating block detaches from the side riser module and transfers to the top of the side riser to rapidly heat the molten iron inside, thereby creating a temperature field for the isolated hot spot. This application solves the problem of shrinkage porosity and voids easily generated at isolated hot spots in exhaust manifolds. Furthermore, the molten iron casting system corresponding to this forming mold saves on chills and feeding runners at traditional large flanges, reduces the size of feeding risers, improves the utilization rate of molten iron (i.e., increases yield), and simplifies subsequent finishing operations of the cast billet.
[0004] Although the above invention can simplify the subsequent finishing operations of the casting billet, the design of the internal cooling water channel of the existing exhaust manifold casting mold is unreasonable. It usually adopts a simple straight channel form, which results in limited heat dissipation area and poor cooling uniformity. This not only prolongs the overall cooling time of the casting and reduces production efficiency, but also causes a significant difference in cooling rate between thick and thin wall areas due to uneven cooling, resulting in uneven thermal stress deformation and residual thermal stress inside the casting. As a result, cracking is likely to occur in subsequent machining or high-temperature use, especially in the critical stress parts of the exhaust manifold.
[0005] This invention provides an engine exhaust manifold casting equipment, which aims to solve the problem that the design of the internal cooling water channel of the existing exhaust manifold casting mold is unreasonable, which easily leads to uneven thermal stress deformation, resulting in residual thermal stress inside the casting and cracking. Summary of the Invention
[0006] The purpose of this invention is to provide an engine exhaust manifold casting equipment to solve the problem mentioned in the background art that the design of the internal cooling water channel of the existing exhaust manifold casting mold is unreasonable, which easily leads to uneven thermal stress deformation, resulting in residual thermal stress inside the casting and easy cracking.
[0007] To achieve the above objectives, the present invention provides the following technical solution: an engine exhaust manifold casting equipment, comprising a bracket, a tilting mechanism, a mold closing mechanism, an upper mold and a lower mold, and further comprising: The cooling mechanism includes a first heat dissipation channel and a second heat dissipation channel disposed inside the lower mold; A control component, connected to the cooling mechanism, is used to independently control the flow rate of coolant through the first heat dissipation channel and the second heat dissipation channel according to the cooling requirements of different parts of the manifold casting.
[0008] Preferably, the control component includes a mounting block, the mounting block having a first flow divider cavity and a second flow divider cavity inside, and the mounting block having a liquid inlet channel communicating with the first flow divider cavity and the second flow divider cavity; The first shunt cavity is connected to the input end of the first heat dissipation channel, and the second shunt cavity is connected to the input end of the second heat dissipation channel.
[0009] Preferably, the control component further includes a first control mechanism, the first control mechanism including a first control cavity disposed inside the mounting block, a first sliding plate slidably connected to the first control cavity, and a first sealing member fixedly connected to the first sliding plate; The first sealing element is used to adjust the opening between the liquid inlet channel and the first diversion chamber.
[0010] Preferably, the first control mechanism further includes a first electromagnet disposed in the first control cavity and a first magnetic component disposed on the first sliding plate. When the first electromagnet is energized, it generates a magnetic force that repels the first magnetic component to drive the first sliding plate to move. The first flow divider cavity is fitted with a first elastic element. One end of the first elastic element is connected to the first sealing element, and the other end is connected to the first flow divider cavity, which is used to provide a reset thrust for the first sealing element.
[0011] Preferably, the control component further includes a second control mechanism, the second control mechanism including a second control cavity disposed inside the mounting block, a second sliding plate slidably connected to the second control cavity, and a second sealing member fixedly connected to the second sliding plate; The second sealing element is used to adjust the opening between the liquid inlet channel and the second diversion chamber.
[0012] Preferably, the second control mechanism further includes a second electromagnet disposed in the second control cavity and a second magnetic component disposed on the second sliding plate. When the second electromagnet is energized, it generates a magnetic force that repels the second magnetic component to drive the second sliding plate to move. The second flow divider cavity is fitted with a second elastic element. One end of the second elastic element is connected to the second sealing element, and the other end is connected to the second flow divider cavity, which is used to provide a reset thrust for the second sealing element.
[0013] Preferably, the control component further includes a third control cavity and a sliding block slidably disposed in the third control cavity, the output end of the first heat dissipation channel is connected to the third control cavity, the mounting block is provided with a return hole connected to the third control cavity, and the interior of the mounting block is provided with a connecting hole connecting the third control cavity and the second diversion cavity; The sliding block has a diversion channel and a return channel connected to the diversion channel. The sliding block has a first position and a second position. In the first position, the diversion channel is offset from the connecting hole, and the return channel is connected to the return hole. In the second position, the diversion channel is aligned with the connecting hole, and the sliding block blocks the connection between the return channel and the return hole.
[0014] Preferably, the control component further includes a third electromagnet disposed in the third control cavity and a third magnetic element disposed on the sliding block. When the third electromagnet is energized, it generates a magnetic force that repels the third magnetic element to drive the sliding block to move from the first position to the second position. The third control cavity is fitted with a third elastic element. One end of the third elastic element is connected to the sliding block, and the other end is connected to the inner wall of the third control cavity, which is used to provide a reset thrust for the sliding block.
[0015] Preferably, the first heat dissipation channel path is arranged in a roundabout manner at the flange part of the corresponding manifold casting; The second heat dissipation channel path is set to be spirally arranged on the pipe wall of the manifold casting.
[0016] Preferably, it further includes a first temperature sensor and a second temperature sensor disposed in the lower mold, wherein the first temperature sensor is used to detect the temperature at the flange of the manifold casting, and the second temperature sensor is used to detect the temperature at the pipe wall of the manifold casting. The first temperature sensor, the second temperature sensor, and the control component are all electrically connected to the controller.
[0017] The technical effects and advantages of this invention are as follows: 1. The present invention, through the setting of the cooling mechanism, can dissipate heat at the flange and pipe wall of the manifold casting through the first heat dissipation channel and the second heat dissipation channel respectively. Combined with the control component, the opening between the liquid inlet channel and the first and second flow distribution chambers is adjusted according to the temperature at the flange and pipe wall of the manifold casting detected by the first and second temperature sensors, so as to realize real-time control of cooling water flow rate, making the cooling rate of the entire manifold casting tend to be uniform, greatly reducing shrinkage cavities, shrinkage porosity defects and casting stress, improving the internal density and dimensional accuracy of the manifold casting, and reducing scrap rate; 2. This invention, through the design of a third control cavity, sliding block, and other structures, achieves series control of the first and second heat dissipation channels. This allows the coolant that has undergone heat exchange in the first heat dissipation channel to be introduced into the second heat dissipation channel for secondary utilization after the mold temperature drops to a set threshold. This effectively utilizes the residual heat of the coolant to gently cool the thin-walled parts of the manifold casting, significantly saving energy consumption. On the other hand, by precisely adjusting the opening of the diversion channel and the connecting hole, as well as the connection state of the return channel and the return hole, through the third electromagnet, not only is dynamic control of the flow rate of coolant flowing into the second heat dissipation channel achieved, avoiding any impact on the consistency of cooling rates in different parts of the casting, but the series circulation mode also improves the overall flow rate inside the cooling system, further enhancing the overall heat dissipation efficiency. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0019] Figure 2 This is a schematic diagram of the upper and lower mold structures of the present invention.
[0020] Figure 3 This is a cross-sectional view of the internal structure of the lower mold of the present invention.
[0021] Figure 4 This is a schematic diagram of the mounting block structure of the present invention.
[0022] Figure 5 This is a schematic diagram of the internal structure of the mounting block of the present invention.
[0023] Figure 6 This is a cross-sectional view of the internal structure of the third control cavity of the present invention.
[0024] Figure 7 This is a cross-sectional view of the waste heat recirculation state of the present invention.
[0025] Figure 8 This is a schematic diagram of the sliding block portion of the present invention.
[0026] The attached figures are labeled as follows: 1. Bracket; 11. Tilting mechanism; 12. Mold closing mechanism; 2. Upper mold; 3. Lower mold; 4. Cooling mechanism; 41. First heat dissipation channel; 42. Second heat dissipation channel; 5. Control component; 51. Mounting block; 52. First flow divider cavity; 53. Second flow divider cavity; 54. Liquid inlet channel; 55. First control cavity; 551. First sliding plate; 552. First support rod; 553. First sealing element; 554. First elastic element; 555. First electrical... Magnet; 556, First magnetic component; 56, Second control cavity; 561, Second sliding plate; 562, Second support; 563, Second sealing component; 564, Second elastic component; 565, Second electromagnet; 566, First magnetic component; 57, Third control cavity; 571, Connecting hole; 572, Sliding block; 573, Diverting channel; 574, Third electromagnet; 575, Third magnetic component; 576, Third elastic component; 58, Return hole; 59, Return channel. Detailed Implementation
[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example
[0028] The existing cooling water channel design of exhaust manifold casting molds is unreasonable, typically employing a simple straight-channel form. This results in limited heat dissipation area and poor cooling uniformity. This not only prolongs the overall cooling time of the casting and reduces production efficiency, but also causes significant differences in cooling rates between thick and thin-walled areas due to uneven cooling. This leads to uneven thermal stress deformation, generating residual thermal stress within the casting. Consequently, during subsequent machining or high-temperature use, especially in critical stress areas of the exhaust manifold, cracking is likely to occur. refer to Figures 1 to 8 An engine exhaust manifold casting device according to an embodiment of the present invention includes a bracket 1 and a flipping mechanism 11. A mold closing mechanism 12 is provided on the flipping mechanism 11. An upper mold 2 and a lower mold 3 are provided on the mold closing mechanism 12. The flipping mechanism 11 is used to drive the upper mold 2 and the lower mold 3 to flip. The mold closing mechanism 12 is used to drive the upper mold 2 and the lower mold 3 to close. The flipping mechanism 11 and the mold closing mechanism 12 are both prior art and will not be described in detail here.
[0029] refer to Figure 3It also includes a cooling mechanism 4, which includes a first heat dissipation channel 41 and a second heat dissipation channel 42 disposed inside the lower mold 3. The first heat dissipation channel 41 is configured as a detour path for heat dissipation and cooling of the manifold casting flange. The second heat dissipation channel 42 is configured as a spiral shape for heat dissipation and cooling of the manifold casting pipe wall. The upper mold 2 is provided with a heat dissipation channel communicating with the second heat dissipation channel 42, which can be connected to the second heat dissipation channel 42 through a telescopic pipe.
[0030] refer to Figures 1 to 5 It also includes a control component 5 disposed on the flipping mechanism 11. The control component 5 includes a mounting block 51. The mounting block 51 has a first flow divider 52 and a second flow divider 53 respectively opened inside. The mounting block 51 has a liquid inlet channel 54 that communicates with the first flow divider 52 and the second flow divider 53. The liquid inlet channel 54 is connected to the output end of the external cooling water circulation device. The first flow divider 52 is connected to the input end of the first heat dissipation channel 41, and the second flow divider 53 is connected to the input end of the second heat dissipation channel 42.
[0031] refer to Figure 5 The mounting block 51 has a first control cavity 55 corresponding to the position of the first diversion cavity 52. A first sliding plate 551 is slidably connected in the first control cavity 55. A first support rod 552 is fixedly connected to the side of the first sliding plate 551 near the first diversion cavity 52. A first sealing member 553 is fixedly connected to one end of the first support rod 552 that extends into the first diversion cavity 52. The first sealing member 553 is used to adjust the opening between the liquid inlet channel 54 and the first diversion cavity 52. The first elastic element 554 is sleeved inside the first diversion cavity 52. One end of the first elastic element 554 is connected to the first sealing element 553, and the other end is connected to the first diversion cavity 52, which is used to provide a reset thrust for the first sealing element 553. A first electromagnet 555 is fixedly connected to the side of the first control cavity 55 away from the first diversion cavity 52, and a first magnetic element 556 is fixedly connected to the side of the first sliding plate 551 close to the first electromagnet 555. When the first electromagnet 555 is energized, it can generate a magnetic force that is like and repulsive to the first magnetic element 556.
[0032] refer to Figure 5 The mounting block 51 has a second control cavity 56 corresponding to the position of the second diversion cavity 53. A second sliding plate 561 is slidably connected in the second control cavity 56. A second support rod 562 is fixedly connected to the side of the second sliding plate 561 near the second diversion cavity 53. A second sealing member 563 is fixedly connected to one end of the second support rod 562 that extends into the second diversion cavity 53. The second sealing member 563 is used to adjust the opening between the liquid inlet channel 54 and the second diversion cavity 53. The second diversion cavity 53 is fitted with a second elastic element 564. One end of the second elastic element 564 is connected to the second sealing element 563, and the other end is connected to the second diversion cavity 53, which is used to provide a reset thrust for the second sealing element 563. A second electromagnet 565 is fixedly connected to the side of the second control cavity 56 away from the second diversion cavity 53, and a second magnetic element 566 is fixedly connected to the side of the second sliding plate 561 close to the second electromagnet 565. When the second electromagnet 565 is energized, it can generate a magnetic force that is like and repulsive to the second magnetic element 566.
[0033] The lower mold 3 is equipped with a first temperature sensor for detecting the temperature at the flange of the manifold casting and a second temperature sensor for detecting the temperature at the pipe wall of the manifold casting. The first temperature sensor, the second temperature sensor, the first electromagnet 555 and the second electromagnet 565 are all electrically connected to the controller.
[0034] In actual operation, the upper mold 2 and the lower mold 3 are preheated first. Then, the sand core is placed between the upper mold 2 and the lower mold 3. After the sand core is placed, the upper mold 2 and the lower mold 3 are closed by the mold closing mechanism 12. Then, the molten metal is poured into the mold. Finally, the mold is flipped by the flipping mechanism 11, and the molten metal is filled into the cavity of the upper mold 2 and the lower mold 3 by gravity.
[0035] After filling is completed, the external cooling water circulation device is started, so that the cooling water is transported to the liquid inlet channel 54 through the pipeline. At this time, the temperature at the manifold casting flange is detected by the first temperature sensor, and the temperature at the manifold casting pipe wall is detected by the second temperature sensor. The controller controls the first electromagnet 555 and the second electromagnet 565 to be energized according to the temperature and cooling rate at the manifold casting flange and pipe wall, and adjusts the power supply current.
[0036] When the first electromagnet 555 is energized, it generates a magnetic force that is repulsive to the first magnetic component 556, thereby pushing the first sliding plate 551 and the first support rod 552 to move the first sealing component 553 within the first diversion cavity 52 and compress the first elastic component 554, thereby adjusting the opening between the liquid inlet channel 54 and the first diversion cavity 52, so that the cooling water can enter the first heat dissipation channel 41 after passing through the first diversion cavity 52 to cool the manifold casting flange. When the second electromagnet 565 is energized, it generates a magnetic force that is repulsive to the second magnetic component 566, thereby pushing the second sliding plate 561 and the second support rod 562 to move the second sealing component 563 within the second diversion cavity 53 and compress the second elastic component 564, thereby adjusting the opening between the liquid inlet channel 54 and the second diversion cavity 53, so that the cooling water can enter the second heat dissipation channel 42 after passing through the second diversion cavity 53 to cool the manifold casting pipe wall; By adjusting the opening between the liquid inlet channel 54 and the first and second diversion chambers 52 and 53, the cooling water flow rate can be adjusted, and the cooling water entering the first and second heat dissipation channels 41 and 42 can be controlled in real time. This allows the cooling rate of the entire manifold casting to be more consistent according to the heat dissipation needs of different parts, greatly reducing shrinkage cavities, porosity defects and casting stress, improving the internal density and dimensional accuracy of the manifold casting, and reducing the scrap rate.
[0037] In summary, by setting up the cooling mechanism 4, heat can be dissipated at the flange and pipe wall of the manifold casting through the first heat dissipation channel 41 and the second heat dissipation channel 42, respectively. Combined with the control component 5, the opening between the liquid inlet channel 54 and the first and second diversion chambers 52 and 53 is adjusted according to the temperature at the flange and pipe wall of the manifold casting detected by the first and second temperature sensors, so as to realize real-time control of the cooling water flow rate, making the cooling rate of the entire manifold casting tend to be consistent, greatly reducing shrinkage cavities, shrinkage porosity defects and casting stress, improving the internal density and dimensional accuracy of the manifold casting, and reducing the scrap rate. Example
[0038] In actual operation, the first heat dissipation channel 41 and the second heat dissipation channel 42 are always in an independent parallel circulation mode. If a brand new low-temperature coolant is still introduced into the thin-walled area of the pipe after the temperature drops, it will not only waste energy, but may also pose a risk of overcooling. Therefore, this embodiment improves the device described in the above embodiment.
[0039] refer to Figures 5 to 8 The mounting block 51 has a third control cavity 57 inside, and the output end of the first heat dissipation channel 41 is connected to the third control cavity 57. The mounting block 51 has a return hole 58 connected to the third control cavity 57, and the return hole 58 is connected to the return end of the external cooling water circulation device. The mounting block 51 has a connecting hole 571 connecting the third control cavity 57 and the second diversion cavity 53 inside. The third control cavity 57 has a sliding block 572 inside, and the diversion channel 573 is opened inside the sliding block 572. The position of the diversion channel 573 corresponds to the position of the connecting hole 571. The side of the sliding block 572 corresponding to the position of the return hole 58 has a return channel 59 connected to the diversion channel 573. A third electromagnet 574 is fixedly connected inside the third control cavity 57. A third magnetic element 575 is fixedly connected to the side of the sliding block 572 near the third electromagnet 574. A third elastic element 576 is sleeved inside the third control cavity 57. One end of the third elastic element 576 is connected to the side of the sliding block 572 away from the third magnetic element 575, and the other end is connected to the inner wall of the third control cavity 57, which is used to provide a reset thrust for the sliding block 572.
[0040] When the third electromagnet 574 is energized, it can generate a force that repels the third magnetic component 575, which is of the same polarity. The third electromagnet 574 is electrically connected to the controller.
[0041] refer to Figure 6 and Figure 7 The sliding block 572 has a first position and a second position. In the first position, the diversion channel 573 is offset from the connecting hole 571, and the return channel 59 is connected to the return hole 58. In the second position, the diversion channel 573 is aligned with the connecting hole 571, and the sliding block 572 blocks the connection between the return channel 59 and the return hole 58.
[0042] In actual operation, due to the high temperature at the manifold casting flange during the initial cooling state, the coolant in the first heat dissipation channel 41 cannot effectively cool the thin wall of the second heat dissipation channel 42 after heat exchange. When the first temperature sensor and the second temperature sensor detect that the temperature inside the mold has dropped to the set threshold (that is, when the coolant in the first heat dissipation channel 41 after heat exchange can cool the corresponding thin wall of the second heat dissipation channel 42), the controller controls the second electromagnet 565 to be de-energized. At this time, the second sealing part 563 will return to the initial position under the rebound action of the second elastic part 564, so that the liquid inlet channel 54 and the second diversion cavity 53 cannot be connected. Simultaneously, the controller increases the current of the first electromagnet 555, opening the liquid inlet channel 54 and the first diversion chamber 52 to their maximum extent. It also energizes the third electromagnet 574, which generates a magnetic force repelling the third magnetic element 575. This force pushes the sliding block 572 within the third control chamber 57, compressing the third elastic element 576 and moving the sliding block 572 from the first position to the second position. This allows the diversion channel 573 to connect with the connecting hole 571. When the sliding block 572 compresses the third elastic element 576 and moves to the second position... At the extreme position, the sliding block 572 is in the second position, and the return channel 59 and the return hole 58 are blocked. At this time, the coolant will enter the first distribution chamber 52, the first heat dissipation channel 41, the third control chamber 57, the second distribution chamber 53, and the second heat dissipation channel 42 through the inlet channel 54 for circulation and cooling. This allows the residual heat of the coolant in the first heat dissipation channel 41 to cool the thin-walled part of the manifold casting. On the one hand, this can save energy consumption, and on the other hand, it can increase the overall flow rate in the first heat dissipation channel 41 and the second heat dissipation channel 42, thereby improving the overall heat dissipation efficiency.
[0043] It should be noted that as the internal temperature of the mold changes, the position of the sliding block 572 can be adjusted by adjusting the magnetic force of the third magnetic component 575, so that the flow channel 573 and the connecting hole 571, as well as the return channel 59 and the return hole 58, can be connected simultaneously. The degree of connection can be adjusted to adjust the flow rate of coolant entering the second heat dissipation channel 42 from the first heat dissipation channel 41, thus avoiding affecting the consistency of the cooling rate.
[0044] In summary, by setting up structures such as the third control cavity 57 and the sliding block 572, on the one hand, the series control of the first heat dissipation channel 41 and the second heat dissipation channel 42 is realized. This allows the coolant that has undergone heat exchange in the first heat dissipation channel 41 to be introduced into the second heat dissipation channel 42 for secondary use after the mold temperature drops to a set threshold. This effectively utilizes the residual heat of the coolant to gently cool the thin-walled part of the manifold casting, significantly saving energy consumption. On the other hand, by precisely adjusting the opening of the diversion channel 573 and the connecting hole 571 and the connection state of the return channel 59 and the return hole 58 through the third electromagnet 574, not only is the flow rate of the coolant flowing into the second heat dissipation channel 42 dynamically controlled, avoiding any impact on the uniformity of the cooling rate of different parts of the casting, but the series circulation mode also increases the overall flow rate inside the cooling system, further improving the overall heat dissipation efficiency.
[0045] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An engine exhaust manifold casting equipment, comprising a support, a tilting mechanism, a mold closing mechanism, an upper mold, and a lower mold, characterized in that, Also includes: The cooling mechanism includes a first heat dissipation channel and a second heat dissipation channel disposed inside the lower mold; A control component, connected to the cooling mechanism, is used to independently control the flow rate of coolant through the first heat dissipation channel and the second heat dissipation channel according to the cooling requirements of different parts of the manifold casting.
2. The engine exhaust manifold casting equipment according to claim 1, characterized in that, The control component includes a mounting block, the mounting block having a first flow divider cavity and a second flow divider cavity inside, and the mounting block having a liquid inlet channel communicating with the first flow divider cavity and the second flow divider cavity; The first shunt cavity is connected to the input end of the first heat dissipation channel, and the second shunt cavity is connected to the input end of the second heat dissipation channel.
3. The engine exhaust manifold casting equipment according to claim 2, characterized in that, The control component further includes a first control mechanism, which includes a first control cavity disposed inside the mounting block, a first sliding plate slidably connected to the first control cavity, and a first sealing member fixedly connected to the first sliding plate. The first sealing element is used to adjust the opening between the liquid inlet channel and the first diversion chamber.
4. The engine exhaust manifold casting equipment according to claim 3, characterized in that, The first control mechanism further includes a first electromagnet disposed in the first control cavity and a first magnetic component disposed on the first sliding plate. When the first electromagnet is energized, it generates a magnetic force that repels the first magnetic component to drive the first sliding plate to move. The first flow divider cavity is fitted with a first elastic element. One end of the first elastic element is connected to the first sealing element, and the other end is connected to the first flow divider cavity, which is used to provide a reset thrust for the first sealing element.
5. The engine exhaust manifold casting equipment according to claim 2, characterized in that, The control assembly further includes a second control mechanism, which includes a second control cavity disposed inside the mounting block, a second sliding plate slidably connected to the second control cavity, and a second sealing member fixedly connected to the second sliding plate; The second sealing element is used to adjust the opening between the liquid inlet channel and the second diversion chamber.
6. The engine exhaust manifold casting equipment according to claim 5, characterized in that, The second control mechanism further includes a second electromagnet disposed in the second control cavity and a second magnetic component disposed on the second sliding plate. When the second electromagnet is energized, it generates a magnetic force that repels the second magnetic component to drive the second sliding plate to move. The second flow divider cavity is fitted with a second elastic element. One end of the second elastic element is connected to the second sealing element, and the other end is connected to the second flow divider cavity, which is used to provide a reset thrust for the second sealing element.
7. The engine exhaust manifold casting equipment according to claim 2, characterized in that, The control component further includes a third control cavity and a sliding block slidably disposed in the third control cavity. The output end of the first heat dissipation channel is connected to the third control cavity. A return hole communicating with the third control cavity is opened on the mounting block. A communication hole communicating with the second diversion cavity is opened inside the mounting block. The sliding block has a diversion channel and a return channel connected to the diversion channel. The sliding block has a first position and a second position. In the first position, the diversion channel is offset from the connecting hole, and the return channel is connected to the return hole. In the second position, the diversion channel is aligned with the connecting hole, and the sliding block blocks the connection between the return channel and the return hole.
8. The engine exhaust manifold casting equipment according to claim 7, characterized in that, The control component further includes a third electromagnet disposed in the third control cavity and a third magnetic element disposed on the sliding block. When the third electromagnet is energized, it generates a magnetic force that repels the third magnetic element to drive the sliding block to move from the first position to the second position. The third control cavity is fitted with a third elastic element. One end of the third elastic element is connected to the sliding block, and the other end is connected to the inner wall of the third control cavity, which is used to provide a reset thrust for the sliding block.
9. The engine exhaust manifold casting equipment according to claim 1, characterized in that, The first heat dissipation channel path is set to be arranged in a detour at the flange part of the corresponding manifold casting. The second heat dissipation channel path is set to be spirally arranged on the pipe wall of the manifold casting.
10. The engine exhaust manifold casting equipment according to claim 1, characterized in that, It also includes a first temperature sensor and a second temperature sensor disposed in the lower mold. The first temperature sensor is used to detect the temperature at the flange of the manifold casting, and the second temperature sensor is used to detect the temperature at the pipe wall of the manifold casting. The first temperature sensor, the second temperature sensor, and the control component are all electrically connected to the controller.
Citation Information
Patent Citations
A molding die for an automotive exhaust manifold and its implementation method
CN111822658B