Casting island for intelligent manufacturing of automobile engine accessories

Abstract

The invention belongs to the technical field of accessory manufacturing, and discloses a casting island for intelligent manufacturing of automobile engine accessories, which comprises a base, the top end of the base is rotatably connected with a cover plate, the outside of the base is provided with a mold closing mechanism, the top end of the base is fixedly provided with a high-pressure injection mechanism, and the driving end of a demolding cylinder is fixedly provided with a top tray. Through cooperation of structures such as a second servo motor, a connecting rod and a supporting rod, the device can electrically drive the connecting rod to rotate, so that the supporting rod and a plurality of inner containers which are distributed in an annular array and are different in size are driven to rapidly switch and enter a mold cavity, and therefore the inner containers can be rapidly switched to enter the mold cavity. Flexible adjustment of different inner cavity specifications under the same shell mold is achieved, the production requirements of automobile engine accessories with different working powers or different element installation numbers are met, input of multiple sets of special molds and frequent mold replacement time are greatly reduced, and the production flexibility and the equipment utilization rate are improved.

Description

Technical Field

[0001] This invention belongs to the field of parts manufacturing technology, specifically a casting island for intelligent manufacturing of automotive engine parts. Background Technology

[0002] With the rapid development of new energy vehicles and high-efficiency internal combustion engines, the performance requirements of automotive engine parts are increasing, especially for aluminum alloy or cast iron casting parts such as cylinder blocks, cylinder heads, and oil pans. Their internal cavity structure directly affects the flow of coolant or lubricating oil, thermal management efficiency, and adaptability under different power and operating conditions. Currently, automotive engine parts are mostly produced using gravity casting, low-pressure casting, or high-pressure die casting processes. These processes are relatively mature in achieving large-scale and stable production. In existing casting production lines, molds are usually designed for specific models of engine parts, that is, one set of molds corresponds to a specific internal cavity size and structure. When it is necessary to produce the same series of parts with different working power or different numbers of installation components, multiple complete sets of molds are usually required, and the cavity, shape, and inner liner of each set of molds are fixed.

[0003] CN120961881A discloses a casting island for intelligent manufacturing of automotive engine parts, including a die-casting machine and a mold assembly fixed inside it. The mold assembly has two side partitions connected to its inner side via a drive connection. The top and bottom of each side partition are respectively provided with a top partition and a bottom partition. A spraying section is provided inside the two side partitions. An air tank and a material tank are located on the top of the spraying section. A mixing section is connected to one side of each side partition via a drive connection. A heat-insulating section is connected to the top of the die-casting machine. The heat-insulating section includes a threaded pipe fixed inside the air tank and an oil tank fixed outside the material tank. It heats and insulates the compressed air and release agent by guiding the coolant cooling the mold assembly to flow spirally inside the threaded pipe and oil tank. The mixing section, in conjunction with the side partitions, uses an anti-settling plate rotatably connected inside the material tank to turbulently prevent the release agent from settling during the mold assembly sealing process.

[0004] When in use, this device can work with the side partition to close the mold assembly and use the anti-settling plate connected to the inside of the tank to turbulent the release agent and prevent it from settling. However, this device cannot quickly switch between different sizes of inner liner under the same outer mold. Therefore, a casting island for intelligent manufacturing of automotive engine parts is proposed, which can quickly switch the size of the inner liner by electric or manual means, thereby improving the quality of castings and production flexibility. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a casting island for intelligent manufacturing of automotive engine parts.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a casting island for intelligent manufacturing of automotive engine parts, comprising a base, a cover plate rotatably connected to the top of the base, a mold closing mechanism installed on the outside of the base, a high-pressure injection mechanism fixed to the top of the base, a demolding cylinder fixed to the outside of the base, a top plate fixed to the driving end of the demolding cylinder, a vibration mechanism installed at the top of the mold closing mechanism, and a switching mechanism installed on the outside of the base; The mold closing mechanism includes a first servo motor, a bidirectional screw, and a limiting rod. The first servo motor is fixed to the outside of the base, and the bidirectional screw is fixed to the drive end of the first servo motor. The limiting rod is fixed inside the base, and the first mold is sleeved on the outside of the limiting rod. The high-pressure injection mechanism includes an injection cylinder, a hydraulic cylinder, and a gooseneck channel. The injection cylinder is fixed to the top of the base, the top of the injection cylinder is equipped with a hydraulic cylinder, the bottom of the injection cylinder is fixed with a gooseneck channel, and the bottom of the gooseneck channel is fixed with an injection nozzle. The switching mechanism includes a second servo motor, a connecting rod, and a support rod. The second servo motor is fixed to the outside of the base. The driving end of the second servo motor is fixed to the connecting rod. The support rod is fixed to the outside of the connecting rod. The inner liner is fixed to the outside of the support rod.

[0007] Preferably, a second mold is sleeved on the outside of the limiting rod, an external thread is provided on the outside of the bidirectional screw, the bidirectional screw is threadedly connected to the first mold, and the bidirectional screw is threadedly connected to the second mold.

[0008] Preferably, the outer wall of the limiting rod is attached to the inner wall of the first mold, the limiting rod and the first mold are slidably connected, and the limiting rod and the second mold are slidably connected.

[0009] Preferably, there are two sets of injection cylinders and hydraulic cylinders, which are symmetrically distributed about the central axis of the base. The output end of the injection cylinder is connected to the input end of the gooseneck channel, and the output end of the gooseneck channel is connected to the input end of the injection nozzle.

[0010] Preferably, the vibration mechanism includes a return spring, a ball bearing, and a guide groove. The return spring is fixed at the bottom inside the first mold, and a ball bearing is fixed at the top of the return spring. A guide groove is provided at the bottom of the gooseneck channel.

[0011] Preferably, the return spring is used to squeeze the ball and keep it moving upward, and the guide groove is provided in several groups and the guide groove is distributed in an array.

[0012] Preferably, a directional wheel is fixed to the outside of the connecting rod, a rocker arm is rotatably connected to the inside of the base, and a guide rod is fixed to the outside of the rocker arm.

[0013] Preferably, the outer wall of the connecting rod fits against the inner wall of the base. Four sets of support rods and inner liner are provided, arranged in a circular array about the central axis of the connecting rod. The size of the inner liner decreases progressively. The outer wall of the connecting rod fits against the inner wall of the base to ensure coaxiality during rotation. The four sets of circularly arrayed support rods evenly support the inner liner, balancing the force on it and preventing it from shifting during switching. This ensures precise alignment with the mold cavity. The progressively smaller inner liner is suitable for producing engine parts with different cavity specifications. Multiple specifications can be produced simply by switching the inner liner, without needing to replace the entire mold, reducing mold investment costs and improving production flexibility.

[0014] Preferably, the outer wall of the steering wheel is provided with a vertical groove for the guide rod to slide, the outer wall of the guide rod and the vertical groove are slidably connected, and there are four sets of vertical grooves, which are distributed in a circular array about the central axis of the connecting rod.

[0015] Preferably, the outer wall of the top plate is fixed with demolding rods, which are arranged in a ring array about the central axis of the top plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the coordination of a second servo motor, connecting rod, support rod, and other structures, enables the device to electrically drive the connecting rod to rotate, thereby driving the support rod and multiple inner liner of different sizes distributed in a ring array to quickly switch into the mold cavity. This achieves flexible adjustment of different inner cavity specifications under the same outer shell mold, meeting the production needs of automotive engine parts with different working power or different component installation quantities, significantly reducing the investment in multiple sets of special molds and frequent mold change time, and improving production flexibility and equipment utilization.

[0017] This invention, through the combination of a reset spring, ball bearings, and guide grooves, enables the device to utilize the movement of the first and second molds during mold closing to drive the reset spring to squeeze the ball bearings. When the ball bearings align with the guide groove at the bottom of the gooseneck channel, the spring's restoring force knocks the ball bearings into the guide groove, thereby generating short-term impact vibration on the gooseneck channel. This effectively vibrates the residual molten metal remaining inside the gooseneck channel, promoting the rapid coalescence and upward escape of inclusion bubbles, refining residual melt grains, reducing the interdendritic feeding threshold pressure gradient, improving feeding capacity, significantly reducing porosity and shrinkage defects in subsequent castings, and improving casting density and internal quality.

[0018] This invention, through the combination of a first servo motor, a bidirectional screw, and a limiting rod, enables the device to precisely drive the bidirectional screw to rotate, achieving high-speed synchronous mold closing and opening of the first and second molds guided by the limiting rod. This ensures high mold positioning accuracy, uniform mold closing force, and fast action response, improving the die-casting cycle time and production efficiency, while also providing reliable support for the stable positioning of the switchable inner liner.

[0019] This invention, through the combination of structures such as the injection cylinder, hydraulic cylinder, and gooseneck channel, enables the device to use the hydraulic cylinder to drive the injection piston to generate high pressure and high speed injection, and to stably press the molten metal in the injection cylinder into the mold cavity through the gooseneck channel and injection nozzle. Combined with the double-set symmetrical arrangement, it further improves the molding consistency and production stability of large and medium-sized engine parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a schematic diagram of the overall open structure of the present invention; Figure 4 This is a schematic diagram of the mold closing mechanism of the present invention; Figure 5 This is a schematic diagram of the mold closing mechanism of the present invention in the open state. Figure 6 This is a schematic diagram of the high-pressure injection mechanism of the present invention; Figure 7 This is a schematic diagram of the switching mechanism structure of the present invention; Figure 8 This is a schematic diagram of the vibration mechanism structure of the present invention; Figure 9 For the present invention Figure 8 A magnified schematic diagram of a partial cross-section at point A in the middle.

[0021] In the diagram: 1. Base; 2. Cover plate; 3. Mold closing mechanism; 301. First servo motor; 302. Bidirectional screw; 303. Limiting rod; 304. First mold; 305. Second mold; 4. High-pressure injection mechanism; 401. Injection barrel; 402. Hydraulic cylinder; 403. Gooseneck channel; 404. Injection nozzle; 5. Demolding cylinder; 6. Top plate; 7. Vibration mechanism; 701. Return spring; 702. Ball bearing; 703. Guide groove; 8. Switching mechanism; 801. Second servo motor; 802. Connecting rod; 803. Support rod; 804. Inner liner; 805. Directional wheel; 806. Rocker arm; 807. Guide rod. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 9 As shown, the present invention provides a casting island for intelligent manufacturing of automotive engine parts, including a base 1, a cover plate 2 rotatably connected to the top of the base 1, a mold closing mechanism 3 installed on the outside of the base 1, a high-pressure injection mechanism 4 fixed to the top of the base 1, a demolding cylinder 5 fixed to the outside of the base 1, a top plate 6 fixed to the driving end of the demolding cylinder 5, a vibration mechanism 7 installed at the top of the mold closing mechanism 3, a switching mechanism 8 installed on the outside of the base 1, and demolding rods fixed to the outer wall of the top plate 6, the demolding rods being distributed in a circular array about the central axis of the top plate 6.

[0024] like Figures 1 to 6 As shown, the mold clamping mechanism 3 includes a first servo motor 301, a bidirectional screw 302, and a limiting rod 303. The first servo motor 301 is fixed to the outside of the base 1. The bidirectional screw 302 is fixed to the drive end of the first servo motor 301. The limiting rod 303 is fixed inside the base 1. A first mold 304 is sleeved on the outside of the limiting rod 303. A second mold 305 is sleeved on the outside of the limiting rod 303. The bidirectional screw 302 has an external thread on its outside. The bidirectional screw 302 and the first mold 304 are threadedly connected. The bidirectional screw 302 and the second mold 305 are threadedly connected. The outer wall of the limiting rod 303 fits against the inner wall of the first mold 304. The limiting rod 303 and the first mold 304 are slidably connected. The limiting rod 303 and the second mold 305 are slidably connected.

[0025] The above solution is adopted: by starting the first servo motor 301 to drive the bidirectional screw 302 to rotate, the thread of the bidirectional screw 302 drives the first mold 304 and the second mold 305 to close, and the inner liner 804 is located in the middle of the mold. The limiting rod 303 can provide guidance for the first mold 304 and the second mold 305.

[0026] like Figures 1 to 6As shown, the high-pressure injection mechanism 4 includes an injection cylinder 401, a hydraulic cylinder 402, and a gooseneck channel 403. The injection cylinder 401 is fixed to the top of the base 1. The hydraulic cylinder 402 is installed at the top of the injection cylinder 401. The gooseneck channel 403 is fixed at the bottom of the injection cylinder 401. The injection nozzle 404 is fixed at the bottom of the gooseneck channel 403. There are two sets of injection cylinders 401 and hydraulic cylinders 402. The injection cylinders 401 and hydraulic cylinders 402 are symmetrically distributed about the central axis of the base 1. The output end of the injection cylinder 401 is connected to the input end of the gooseneck channel 403. The output end of the gooseneck channel 403 is connected to the input end of the injection nozzle 404.

[0027] Using the above scheme: by starting the hydraulic cylinder 402 to drive the injection piston to move downward, the molten metal in the injection barrel 401 is introduced into the first mold 304 and the second mold 305 after high-speed injection through the gooseneck channel 403 and the injection nozzle 404, thereby completing the die casting.

[0028] like Figures 1 to 9 As shown, the vibration mechanism 7 includes a return spring 701, a ball 702, and a guide groove 703. The return spring 701 is fixed at the bottom inside the first mold 304, and the ball 702 is fixed at the top of the return spring 701. The bottom of the gooseneck channel 403 is provided with a guide groove 703. The return spring 701 is used to squeeze the ball 702 and keep it moving upward. Several sets of guide grooves 703 are provided and the guide grooves 703 are distributed in an array.

[0029] The above scheme is adopted: when the first mold 304 and the second mold 305 move, the return spring 701 and the ball 702 move, so that when the ball 702 moves to the guide groove 703, the restoring force of the return spring 701 will knock the ball 702 into the guide groove 703, thereby causing the gooseneck channel 403 to vibrate, thereby vibrating the part of the molten metal liquid remaining inside the gooseneck channel 403.

[0030] like Figures 1 to 7As shown, the switching mechanism 8 includes a second servo motor 801, a connecting rod 802, and a support rod 803. The second servo motor 801 is fixed to the outside of the base 1. The driving end of the second servo motor 801 is fixed to the connecting rod 802. The outside of the connecting rod 802 is fixed to the support rod 803. The outside of the support rod 803 is fixed to the inner liner 804. The outside of the connecting rod 802 is fixed to the selector wheel 805. A rocker arm 806 is rotatably connected inside the base 1. The outside of the rocker arm 806 is fixed to... There is a guide rod 807, the outer wall of the connecting rod 802 is attached to the inner wall of the base 1, and four sets of support rods 803 and inner liner 804 are provided. The support rods 803 and inner liner 804 are arranged in a circular array about the central axis of the connecting rod 802. The size of the inner liner 804 decreases. The outer wall of the selector wheel 805 is provided with a vertical groove for sliding the guide rod 807. The outer wall of the guide rod 807 and the vertical groove are slidably connected. There are four sets of vertical grooves. The vertical grooves are arranged in a circular array about the central axis of the connecting rod 802.

[0031] The above solution involves starting the second servo motor 801 to rotate the connecting rod 802, which in turn rotates the support rod 803 and the inner liner 804. This causes the size of the inner liner 804, which enters the first mold 304 and the second mold 305, to change the internal space of the formed parts. If the second servo motor 801 malfunctions or is under maintenance and production needs to continue, the user can crank the rocker arm 806 to rotate the guide rod 807. The rotation of the guide rod 807 will then contact the selection wheel 805, causing the selection wheel 805 to rotate 90°, thus completing the switching of the inner liner 804 and allowing the device to continue production.

[0032] The working principle and usage process of this invention are as follows: First, the first servo motor 301 is started to drive the bidirectional screw 302 to rotate. Then, the thread of the bidirectional screw 302 drives the first mold 304 and the second mold 305 to close, so that the inner liner 804 is in the middle of the mold. The limiting rod 303 can provide guidance for the first mold 304 and the second mold 305. The hydraulic cylinder 402 is started to drive the injection piston to move down, and the molten metal in the injection barrel 401 is introduced into the first mold 304 and the second mold 305 after high-speed injection through the gooseneck channel 403 and the injection nozzle 404, thereby completing the die casting.

[0033] Secondly, when the first mold 304 and the second mold 305 move, they drive the return spring 701 and the ball 702 to move. When the ball 702 moves to the guide groove 703, the restoring force of the return spring 701 knocks the ball 702 into the guide groove 703, thereby causing the gooseneck channel 403 to vibrate. This vibrates the molten metal remaining in the gooseneck channel 403, effectively promoting the escape and removal of bubbles in the residual melt and reducing the porosity of the subsequent castings.

[0034] Finally, by starting the second servo motor 801, the connecting rod 802 is rotated, which in turn drives the support rod 803 and the inner liner 804 to rotate. This causes the size of the inner liner 804, which enters the first mold 304 and the second mold 305, to change the internal space of the formed parts. In case the second servo motor 801 fails or is under maintenance and production needs to continue, the user can use the hand crank 806 to rotate the guide rod 807. The rotation of the guide rod 807 will then contact the selection wheel 805, causing the selection wheel 805 to rotate 90°, thereby completing the switching of the inner liner 804 and enabling the device to continue production.

[0035] After die casting is completed, the casting continues to cool and solidify in the cavity until the set solidification time is reached. The demolding cylinder 5 is activated, driving the top plate 6 to move the demolding rod fixed on it forward along the annular array direction, ejecting the casting from the first mold 304 and the second mold 305. After the casting is ejected, the operator takes out the casting for subsequent cooling, deburring, or quality inspection. After the part is taken out, the first servo motor 301 rotates in the opposite direction, and the bidirectional screw 302 drives the first mold 304 and the second mold 305 to move to both sides along the limit rod 303 to open the mold. During the mold opening process, the return spring 701 inside the first mold 304 pushes the ball 702 to cooperate with the bottom guide groove 703 of the gooseneck channel 403 again, generating additional impact vibration. This vibration acts on the residual melt in the gooseneck channel 403, promoting the further escape of residual bubbles, removing solidified residue, and preventing residue or bubbles from mixing into the cavity during the next injection cycle.

[0036] After the mold is opened, the device enters the preparation stage of the next production cycle. According to the production plan, if different specifications of accessories need to be produced, the size of the inner liner 804 is adjusted by the switching mechanism 8. The second servo motor 801 is started to drive the connecting rod 802 to rotate. The connecting rod 802 drives the support rod 803 and the inner liners 804 distributed in a ring array to rotate, so that the inner liner 804 of the required size is aligned with the center of the mold and positioned. If the second servo motor 801 malfunctions or needs to be repaired, the rocker arm 806 can be manually turned. The rocker arm 806 drives the guide rod 807 to slide along the vertical groove of the selector wheel 805. The selector wheel 805 rotates 90° to complete the switching of the inner liner 804, ensuring that production is not interrupted.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting island for intelligent manufacturing of automotive engine parts, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a cover plate (2), a mold closing mechanism (3) is installed on the outside of the base (1), a high-pressure injection mechanism (4) is fixed on the top of the base (1), a demolding cylinder (5) is fixed on the outside of the base (1), a top plate (6) is fixed on the driving end of the demolding cylinder (5), a vibration mechanism (7) is installed on the top of the mold closing mechanism (3), and a switching mechanism (8) is installed on the outside of the base (1). The mold closing mechanism (3) includes a first servo motor (301), a bidirectional screw (302) and a limiting rod (303). The first servo motor (301) is fixed to the outside of the base (1). The bidirectional screw (302) is fixed to the drive end of the first servo motor (301). The limiting rod (303) is fixed inside the base (1). The first mold (304) is sleeved on the outside of the limiting rod (303). The high-pressure injection mechanism (4) includes an injection cylinder (401), a hydraulic cylinder (402), and a gooseneck channel (403). The injection cylinder (401) is fixed to the top of the base (1). The hydraulic cylinder (402) is installed at the top of the injection cylinder (401). The gooseneck channel (403) is fixed at the bottom of the injection cylinder (401). The injection nozzle (404) is fixed at the bottom of the gooseneck channel (403). The switching mechanism (8) includes a second servo motor (801), a connecting rod (802) and a support rod (803). The second servo motor (801) is fixed to the outside of the base (1). The driving end of the second servo motor (801) is fixed with the connecting rod (802). The outside of the connecting rod (802) is fixed with the support rod (803). The outside of the support rod (803) is fixed with the inner liner (804).

2. The casting island for intelligent manufacturing of automotive engine parts according to claim 1, characterized in that: The limiting rod (303) is fitted with a second mold (305), the bidirectional screw (302) is provided with an external thread, the bidirectional screw (302) and the first mold (304) are threadedly connected, and the bidirectional screw (302) and the second mold (305) are threadedly connected.

3. The casting island for intelligent manufacturing of automotive engine parts according to claim 2, characterized in that: The outer wall of the limiting rod (303) is attached to the inner wall of the first mold (304), the limiting rod (303) and the first mold (304) are slidably connected, and the limiting rod (303) and the second mold (305) are slidably connected.

4. The casting island for intelligent manufacturing of automotive engine parts according to claim 1, characterized in that: Two sets of injection cylinders (401) and hydraulic cylinders (402) are provided. The injection cylinders (401) and hydraulic cylinders (402) are symmetrically distributed about the central axis of the base (1). The output end of the injection cylinder (401) is connected to the input end of the gooseneck channel (403), and the output end of the gooseneck channel (403) is connected to the input end of the injection nozzle (404).

5. The casting island for intelligent manufacturing of automotive engine parts according to claim 1, characterized in that: The vibration mechanism (7) includes a return spring (701), a ball (702) and a guide groove (703). The return spring (701) is fixed at the bottom inside the first mold (304), and the ball (702) is fixed at the top of the return spring (701). The bottom of the gooseneck channel (403) is provided with a guide groove (703).

6. The casting island for intelligent manufacturing of automotive engine parts according to claim 5, characterized in that: The return spring (701) is used to squeeze the ball (702) and keep it moving upward. The guide groove (703) is provided in several groups and is distributed in an array.

7. The casting island for intelligent manufacturing of automotive engine parts according to claim 2, characterized in that: The connecting rod (802) is fixed with a steering wheel (805) on the outside, and the base (1) is rotatably connected with a rocker arm (806). The rocker arm (806) is fixed with a guide rod (807) on the outside.

8. The casting island for intelligent manufacturing of automotive engine parts according to claim 1, characterized in that: The outer wall of the connecting rod (802) is attached to the inner wall of the base (1). There are four sets of support rods (803) and inner liner (804). The support rods (803) and inner liner (804) are arranged in a circular array about the central axis of the connecting rod (802). The size of the inner liner (804) decreases.

9. The casting island for intelligent manufacturing of automotive engine parts according to claim 7, characterized in that: The outer wall of the steering wheel (805) is provided with a vertical groove for sliding the guide rod (807). The outer wall of the guide rod (807) and the vertical groove are slidably connected. There are four sets of vertical grooves, which are arranged in a ring array about the central axis of the connecting rod (802).

10. The casting island for intelligent manufacturing of automotive engine parts according to claim 1, characterized in that: The outer wall of the top plate (6) is fixed with demolding rods, which are arranged in a ring array about the central axis of the top plate (6).

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