Engine cylinder block based on HCCI and preparation process thereof

Abstract

The invention belongs to the technical field of engine cylinder block preparation, and particularly relates to an HCCI-based engine cylinder block and a preparation process thereof.The HCCI-based engine cylinder block comprises a machine body, firstly, when die casting of the engine cylinder block is completed, a hydraulic cylinder drives a sealing plate to be separated from a die plate, fixed connection between the die plate and the machine body is relieved, and the engine cylinder block is separated from the die plate; after the mold plate is installed, an electric sliding table on the upper surface of the fixing frame is started, the electric sliding table slides along a fixing guide rail formed in the surface of the fixing frame, the electric sliding table drives a scraping block rotationally arranged on one side of the electric sliding table while sliding, and the scraping block abuts against the upper surface of the mold plate; and metal residues on the surface of the mold plate are scraped along with sliding of the electric sliding table, and the problem of metal residues on the edge of the mold plate is solved by arranging the scraping assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of engine cylinder block preparation, and specifically relates to an engine cylinder block based on HCCI and its preparation process. Background Art

[0002] An engine cylinder block based on HCCI (Homogeneous Charge Compression Ignition) is an engine cylinder block that combines the advantages of gasoline engines and diesel engines. It achieves efficient and low-emission combustion by pre-mixing fuel and air and auto-igniting during the compression stroke.

[0003] The existing preparation process flow of engine cylinder blocks is a complex and delicate process, including multiple links such as raw material preparation, mold making, casting operation, cooling treatment, rough machining, finishing, surface treatment, quality inspection, and assembly. First, suitable casting materials, such as aluminum alloy or ferroalloy, are selected and precise molds are made. Then, the molten metal liquid is poured into the mold by means of gravity casting or low-pressure casting, and the casting parameters are strictly controlled. After cooling and solidifying, the casting is taken out and subjected to preliminary and fine machining to ensure dimensions and accuracy. Finally, surface treatment is carried out to improve corrosion resistance and wear resistance. After strict quality inspection, assembly is carried out to form the final product.

[0004] However, during the casting process of the existing engine cylinder blocks, when the mold is hermetically combined, due to the filling pressure of the molten alloy and the tiny gaps of the mold itself, some molten alloy often overflows at the edges of the mold. These overflowed molten alloys quickly cool and solidify at the mold edges, forming a layer of solid metal residue. In subsequent casting operations, when the mold is sealed again, these solidified metal residues will become an obstacle, resulting in the mold being unable to be completely sealed. This will not only affect the forming quality of the cylinder block, causing surface defects or even internal cavities, but also reduce the service life of the mold, increase production costs. More seriously, insufficient sealing may also cause alloy leakage problems during the casting process.

[0005] Therefore, the present invention provides an engine cylinder block based on HCCI and its preparation process. Summary of the Invention

[0006] In order to make up for the deficiencies of the existing technology and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A preparation process for an engine cylinder block based on HCCI according to the present invention includes material preparation, mold installation, cylinder block casting, finishing treatment, and inspection and delivery. Step 1: After the molten materials for the cylinder block are prepared, the cylinder block mold plate is installed on the upper surface of the casting body to prepare for casting.

[0008] Step 2: Inject the molten alloy material into the mold plate, and drive the sealing plate by the hydraulic cylinder on the top wall of the machine body to seal the mold plate filled with molten alloy.

[0009] Step 3: After sealing, wait for the molten alloy to cool, lift the sealing plate, remove the mold plate, take out the engine block, then install the mold plate back on the upper surface of the machine body, and repeat Step 1 and Step 2 to cast the engine block.

[0010] Preferably, in Step 2, by starting the hydraulic cylinder on the top wall of the machine body, the hydraulic cylinder drives the sealing plate at its output end to move towards the mold plate. When the fixed pipe on the surface of the mold plate is inserted into the jack on the lower surface of the sealing plate, the plug on the lower surface of the sealing plate will also be inserted into the fixing hole in the fixed pipe, and at this time, the sealing die-casting of the engine block is completed.

[0011] Preferably, on the upper surface of the machine body in Step 3, a mold plate is installed, a fixed frame is arranged around the mold plate, and a scraping component for cleaning the edge of the mold plate is slidably arranged on the fixed frame. The scraping component includes a scraping block that abuts against the mold plate to scrape off the metal residue on the edge of the mold plate.

[0012] Preferably, the scraping work is as follows: First, when the die-casting of the engine block is completed, the hydraulic cylinder drives the sealing plate to disengage from the mold plate, releases the fixation between the mold plate and the machine body, separates the engine block from the mold plate, and then reinstalls the mold plate on the upper surface of the machine body. After installing the mold plate, start the electric slide on the upper surface of the fixed frame, and the electric slide slides along the fixed guide rail opened on the surface of the fixed frame. While the electric slide slides, it drives the scraping block rotatably arranged on one side thereof, and the scraping block abuts against the upper surface of the mold plate. As the electric slide slides, the metal residue on the surface of the mold plate is scraped off.

[0013] Preferably, during the process of the scraping block cleaning the edge of the mold plate along with the electric slide, since there is a fixed pipe on the surface of the mold plate that docks with the sealing plate, when the scraping block abuts against the fixed pipe, the reaction force of the fixed pipe on the scraping block causes the scraping block to rotate around the rotating shaft. When passing around one of the fixed pipes, the scraping block resets under the action of the restoring force of the torsion spring and scrapes and cleans the surface of the mold plate again.

[0014] Preferably, during the process of the scraping block scraping the surface of the mold plate, the coating roller inside the scraping block will work synchronously to coat the release agent on the surface of the mold plate.

[0015] Preferably, the coating roller works as follows: when the scraping block abuts against the mold plate, the connecting frame in the scraping block is squeezed into the fixing cavity by the mold plate. At this time, the fixing grooves on both sides of the connecting frame are aligned with the connecting grooves on both sides of the inner wall of the fixing cavity. The release agent built in the scraping block flows into the positioning cavity in the connecting frame to soak the coating roller. After the scraping work of the scraping block, the coating roller immediately performs the coating work. In addition, when encountering the fixing pipe, under the action of the reset force of the compression spring, the connecting groove and the fixing groove are misaligned, and at this time, the release agent does not penetrate into the positioning cavity.

[0016] Preferably, while the scraping block is performing the scraping work, two cleaning rollers rotatably arranged on one side of the scraping block abut against the outer wall of the mold plate, and the cleaning rollers work synchronously with the scraping block to clean the metal residues on the outer wall of the mold plate.

[0017] Preferably, after the scraping block, the coating roller and the cleaning roller complete the scraping and coating work, the limiting shaft in the rotating groove on one side of the electric sliding table is started, and the rotation of the limiting shaft pulls the steel wire between the limiting shaft and the scraping block. The steel wire is fixedly connected to the connecting ring on one side of the scraping block, and the scraping block is retracted into the storage groove, and then the engine cylinder block is cast again.

[0018] An HCCI-based engine cylinder block includes a cylinder block, and piston holes for piston movement are provided on the upper surface of the cylinder block.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. For the HCCI-based engine cylinder block and its preparation process of the present invention, through the scraping of the scraping block, not only the metal residues on the surface of the mold plate are effectively removed, avoiding the influence of the residues on the subsequent die-casting work, saving the time and cost of manual cleaning, but also through the collaborative work of the electric sliding table and the scraping block, the rapid and efficient cleaning of the surface of the mold plate is realized, providing a strong guarantee for the continuous and high-quality production of the engine cylinder block. In addition, the device also has good reliability and durability, and can adapt to the production requirements of long-term and high-intensity.

[0021] 2. In the engine block based on HCCI and its preparation process according to the present invention, during the process of the scraping block cleaning the edge of the mold plate along with the electric sliding table, the fixed pipe arranged on the surface of the mold plate needs to be adaptively bypassed. When the scraping block moves to the position of the fixed pipe and abuts against it, the reaction force generated by the fixed pipe on the scraping block will cause the scraping block to rotate around the preset rotation axis, so as to avoid the fixed pipe, preventing direct impact on the fixed pipe. When the scraping block bypasses the fixed pipe, the restoring force of the torsion spring will come into play, pushing the scraping block to quickly reset, enabling it to closely fit the surface of the mold plate again and continue to scrape and clean the residual metal, ensuring the continuity and high efficiency of the scraping work. At the same time, it effectively protects the fixed pipe on the mold plate and extends the service life of the mold. Through the flexible rotation of the scraping block and the restoring action of the torsion spring, the cleaning process realizes a comprehensive and dead-angle-free cleaning of the surface of the mold plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 is a perspective view of Embodiment 1 of the present invention;

[0024] Figure 2 is a schematic structural view of the main body of the present invention;

[0025] Figure 3 is a schematic structural view of the scraping assembly of the present invention;

[0026] Figure 4 is a schematic structural view of the electric sliding table of the present invention;

[0027] Figure 5 is a schematic structural view of the scraping block of the present invention;

[0028] Figure 6 is a sectional view of the scraping block of the present invention;

[0029] Figure 7 is a schematic structural view of the connecting groove of the present invention;

[0030] Figure 8 is a schematic structural view of the mold plate of the present invention;

[0031] Figure 9 is a schematic structural view of the sealing plate of the present invention;

[0032] Figure 10 is a schematic structural view of the engine block of the present invention.

[0033] In the figure: 1, body; 11, mold plate; 12, slot; 13, fixed pipe; 14, fixing hole;

[0034] 2. Fixed frame; 21. Fixed guide rail; 22. Electric slide table; 23. Scraping block; 24. Rotating shaft; 25. Torsion spring; 26. Fixed cavity; 27. Compression spring; 28. Connecting frame; 29. Fixed groove; 210. Positioning cavity; 211. Coating roller; 212. Connecting groove; 213. Cleaning roller; 214. Connecting ring; 215. Storage groove; 216. Rotating groove; 217. Limiting shaft;

[0035] 3. Sealing plate; 31. Hydraulic cylinder; 32. Insertion post; 33. Insertion hole; 34. Insertion plate;

[0036] 4. Cylinder block one; 41. Piston hole. Specific embodiments

[0037] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0038] Example 1: As Figures 1 to 9 shown, a cylinder block of an engine based on HCCI and its preparation process described in an embodiment of the present invention include preparing materials, installing a mold, casting the cylinder block, finishing processing and inspecting and leaving the factory. The specific steps are as follows: Step 1: After the molten material of the cylinder block is prepared, install the cylinder block mold plate 11 on the upper surface of the casting body 1 and prepare for casting; Step 2: Inject the molten alloy material into the mold plate 11, and drive the sealing plate 3 on the top wall of the body 1 by the hydraulic cylinder 31 to seal the mold plate 11 filled with the molten alloy; Step 3: After sealing, wait for the molten alloy to cool, lift the sealing plate 3, remove the mold plate 11, take out the engine cylinder block, and then install the mold plate 11 back on the upper surface of the body 1, and repeat Steps 1 and 2 to cast the engine cylinder block.

[0039] As Figure 8 and Figure 9 shown, in Step 2 of this embodiment, by starting the hydraulic cylinder 31 on the top wall of the body 1, the hydraulic cylinder 31 drives the sealing plate 3 at its output end to move towards the mold plate 11. When the fixed pipe 13 on the surface of the mold plate 11 is inserted into the insertion hole 33 on the lower surface of the sealing plate 3, the insertion post 32 on the lower surface of the sealing plate 3 will also be inserted into the fixed hole 14 in the fixed pipe 13, and at this time, the sealed die casting of the engine cylinder block is completed.

[0040] Specifically, through the control of the hydraulic cylinder 31, the rapid and accurate docking between the sealing plate 3 and the mold plate 11 is realized.

[0041] As Figure 2 and Figure 3As shown in the figure, in this embodiment, a mold plate 11 is installed on the upper surface of the machine body 1 in step three. A fixing frame 2 is provided around the mold plate 11. A scraping component for cleaning the edge of the mold plate 11 is slidably arranged on the fixing frame 2. The scraping component includes a scraping block 23 that abuts against the mold plate 11 to scrape off the metal residues on the edge of the mold plate 11.

[0042] Specifically, the metal residues on the edge of the mold plate 11 are scraped off by the scraping component slidably arranged on the upper surface of the fixing frame 2, so that during the subsequent use of the mold plate 11, the remaining metal on the surface will not affect its docking with the sealing plate 3, preventing gaps at the docking part of the sealing plate 3 and the mold plate 11, and achieving the effect of improving the production quality of the engine cylinder block.

[0043] As Figures 3 to 5 shown in the figure, the scraping work in this embodiment is as follows: First, when the die casting of the engine cylinder block is completed, the hydraulic cylinder 31 drives the sealing plate 3 to separate from the mold plate 11, releases the fixed connection between the mold plate 11 and the machine body 1, separates the engine cylinder block from the mold plate 11, and then reinstalls the mold plate 11 on the upper surface of the machine body 1. After the mold plate 11 is installed, the electric slide table 22 on the upper surface of the fixing frame 2 is started. The electric slide table 22 can slide along the fixing guide rail 21 opened on the surface of the fixing frame 2. While the electric slide table 22 slides, it drives the scraping block 23 rotatably arranged on one side of it. The scraping block 23 abuts against the upper surface of the mold plate 11, and the scraping work of the metal residues on the surface of the mold plate 11 is carried out as the electric slide table 22 slides;

[0044] Through the scraping of the scraping block 23, not only the metal residues on the surface of the mold plate 11 are effectively removed, avoiding the influence of the residues on the subsequent die casting work, saving the time and cost of manual cleaning, but also through the coordinated work of the electric slide table 22 and the scraping block 23, the rapid and efficient cleaning of the surface of the mold plate 11 is realized, providing a strong guarantee for the continuous and high-quality production of the engine cylinder block. In addition, this device also has good reliability and durability, and can adapt to the long-term and high-intensity production requirements.

[0045] As Figure 6 shown in the figure, during the process of the scraping block 23 cleaning the edge of the mold plate 11 along with the electric slide table 22, since there is a fixing pipe 13 on the surface of the mold plate 11 for docking with the sealing plate 3, when the scraping block 23 abuts against the fixing pipe 13, the reaction force of the fixing pipe 13 on the scraping block 23 causes the scraping block 23 to rotate around the rotating shaft 24. After passing around one of the fixing pipes 13, the scraping block 23 resets under the action of the restoring force of the torsion spring 25 and scrapes and cleans the surface of the mold plate 11 again.

[0046] Specifically, during the process of the scraping block 23 cleaning the edge of the mold plate 11 along with the electric slide table 22, the fixed pipe 13 arranged on the surface of the mold plate 11 needs to be bypassed adaptively. When the scraping block 23 moves to the position of the fixed pipe 13 and abuts against it, the reaction force generated by the fixed pipe 13 on the scraping block 23 will cause the scraping block 23 to rotate around the preset rotation axis 24, so as to avoid the fixed pipe 13 and prevent direct impact on the fixed pipe 13. When the scraping block 23 bypasses the fixed pipe 13, the restoring force of the torsion spring 25 will come into play and push the scraping block 23 to quickly reset, enabling it to closely fit the surface of the mold plate 11 again and continue to scrape and clean the residual metal, ensuring the continuity and high efficiency of the scraping work. At the same time, it effectively protects the fixed pipe 13 on the mold plate 11 and extends the service life of the mold. Through the flexible rotation of the scraping block 23 and the restoring effect of the torsion spring 25, the cleaning process realizes a comprehensive and dead-angle-free cleaning of the surface of the mold plate 11.

[0047] Embodiment 2: As Figures 1 to 9 shown, compared with Embodiment 1, another implementation manner of the present invention is as follows: during the process of the scraping block 23 scraping the surface of the mold plate 11, the coating roller 211 inside the scraping block 23 will work synchronously to coat the release agent on the surface of the mold plate 11. The specific work of the coating roller 211 is that when the scraping block 23 abuts against the mold plate 11, the connecting frame 28 inside the scraping block 23 is squeezed into the fixed cavity 26 by the mold plate 11. At this time, the fixing grooves 29 on both sides of the connecting frame 28 are aligned with the connecting grooves 212 on both sides of the inner wall of the fixed cavity 26. The release agent built in the scraping block 23 flows into the positioning cavity 210 inside the connecting frame 28 to soak the coating roller 211. After the scraping work of the scraping block 23, the coating roller 211 immediately performs the coating work. In addition, when encountering the fixed pipe 13, under the action of the restoring force of the compression spring 27, the connecting groove 212 and the fixing groove 29 are misaligned, and at this time, the release agent does not penetrate into the positioning cavity 210.

[0048] Specifically, while the scraping block 23 scrapes the surface of the mold plate 11, the coating roller 211 inside it is also started synchronously, realizing double treatment of the surface of the mold plate 11. When the scraping block 23 is in close contact with the mold plate 11 and starts scraping the residual metal, the connecting frame 28 inside the scraping block 23 is gently squeezed by the mold plate 11 and then slides into the fixed cavity 26. At this time, the fixing grooves 29 on both sides of the connecting frame 28 are aligned with the connecting grooves 212 on the inner wall of the fixed cavity 26. The mold release agent built into the scraping block 23 is guided into the positioning cavity 210 inside the connecting frame 28 and fully wets the coating roller 211. As the scraping block 23 completes the scraping work and continues to move, the coating roller 211 wetted with the mold release agent immediately adheres tightly to the surface of the mold plate 11 to perform uniform mold release agent coating, providing good mold release conditions for subsequent die-casting operations, reducing the residual metal on the surface of the mold plate 11, and the coated mold release agent helps to clean the surface of the mold plate 11 next time. When the scraping block 23 encounters the fixed pipe 13 on the mold plate 11 again, the connecting frame 28 quickly adjusts its position under the action of the restoring force of the compression spring 27, causing the fixing groove 29 to be misaligned with the connecting groove 212, cutting off the supply of the mold release agent, preventing the mold release agent from seeping into the positioning cavity 210 in the area where coating is not required, saving the mold release agent, reducing the replenishment of the mold release agent, and improving the cleaning efficiency and production quality.

[0049] As Figure 6 shown, while the scraping block 23 of this embodiment performs the scraping work, two cleaning rollers 213 rotatably arranged on one side of the scraping block 23 are in contact with the outer wall of the mold plate 11, and the cleaning rollers 213 work synchronously with the scraping block 23 to clean the residual metal on the outer wall of the mold plate 11.

[0050] Specifically, while the scraping block 23 scrapes the metal residue on the surface of the mold plate 11, two cleaning rollers 213 rotatably arranged on one side of it are in close contact with the outer wall of the mold plate 11 and perform the cleaning work synchronously. This not only enhances the cleaning effect, ensuring that the metal residue on the outer wall of the mold plate 11 is completely removed, but also improves the work efficiency. Through the coordinated action of the cleaning rollers 213 and the scraping block 23, both the surface and the outer wall of the mold plate 11 can be comprehensively cleaned, providing a cleaner working environment for subsequent die-casting operations.

[0051] As Figure 4As shown in the figure, after the scraping block 23, the coating roller 211, and the cleaning roller 213 complete the scraping and coating work in this embodiment, the limiting shaft 217 in the rotating groove 216 on one side of the electric slide table 22 is started. The rotation of the limiting shaft 217 pulls the steel wire between the limiting shaft 217 and the scraping block 23. The steel wire is fixedly connected to the connecting ring 214 on one side of the scraping block 23, and the scraping block 23 is received into the storage groove 215. Subsequently, the engine block is cast again. The storage of the scraping block 23 solves the problem that the scraping block 23 directly abuts against the die plate 11. The stored scraping block 23 does not affect the casting of the engine block. When it is enabled, releasing the scraping block 23 can clean the die plate 11, saving the cost of manual cleaning.

[0052] Working principle: By starting the hydraulic cylinder 31 on the top wall of the machine body 1, the hydraulic cylinder 31 drives the sealing plate 3 at its output end to move towards the die plate 11. When the fixed pipe 13 on the surface of the die plate 11 is inserted into the jack 33 on the lower surface of the sealing plate 3, the plug post 32 on the lower surface of the sealing plate 3 will also be inserted into the fixing hole 14 in the fixed pipe 13. At this time, the sealed die-casting of the engine block is completed. Through the control of the hydraulic cylinder 31, the rapid and accurate docking between the sealing plate 3 and the die plate 11 is realized.

[0053] When the die-casting of the engine block is completed, the hydraulic cylinder 31 drives the sealing plate 3 to disengage from the die plate 11, releases the fixed connection between the die plate 11 and the machine body 1, separates the engine block from the die plate 11, and then reinstalls the die plate 11 on the upper surface of the machine body 1. After installing the die plate 11, start the electric slide table 22 on the upper surface of the fixed frame 2. The electric slide table 22 can slide along the fixed guide rail 21 opened on the surface of the fixed frame 2. While the electric slide table 22 slides, it drives the scraping block 23 rotatably arranged on one side. The scraping block 23 abuts against the upper surface of the die plate 11, and the metal residue on the surface of the die plate 11 is scraped off as the electric slide table 22 slides.

[0054] Through the scraping of the scraping block 23, not only the metal residue on the surface of the die plate 11 is effectively removed, avoiding the influence of the residue on the subsequent die-casting work, saving the time and cost of manual cleaning, but also through the coordinated work of the electric slide table 22 and the scraping block 23, the rapid and efficient cleaning of the surface of the die plate 11 is realized, providing a strong guarantee for the continuous and high-quality production of the engine block. In addition, the device also has good reliability and durability, and can adapt to long-term and high-intensity production requirements.

[0055] During the process of the scraping block 23 cleaning the edge of the mold plate 11 along with the electric slide table 22, the fixed pipe 13 arranged on the surface of the mold plate 11 needs to be bypassed adaptively. When the scraping block 23 moves to the position of the fixed pipe 13 and abuts against it, the reaction force generated by the fixed pipe 13 on the scraping block 23 will cause the scraping block 23 to rotate around the preset rotating shaft 24, so as to avoid the fixed pipe 13 and prevent direct impact on the fixed pipe 13. When the scraping block 23 bypasses the fixed pipe 13, the restoring force of the torsion spring 25 will come into play and push the scraping block 23 to quickly reset, enabling it to closely fit the surface of the mold plate 11 again and continue to scrape and clean the residual metal, ensuring the continuity and high efficiency of the scraping work. At the same time, it effectively protects the fixed pipe 13 on the mold plate 11 and extends the service life of the mold. Through the flexible rotation of the scraping block 23 and the restoring effect of the torsion spring 25, the cleaning process realizes a comprehensive and dead-angle-free cleaning of the surface of the mold plate 11;

[0056] In addition, while the scraping block 23 is scraping the surface of the mold plate 11, the coating roller 211 inside it is also started synchronously, realizing a double treatment of the surface of the mold plate 11. When the scraping block 23 closely abuts against the mold plate 11 and starts scraping the residual metal, the connecting frame 28 inside the scraping block 23 is gently squeezed by the mold plate 11 and then slides into the fixed cavity 26. At this time, the fixing grooves 29 on both sides of the connecting frame 28 are aligned with the connecting grooves 212 on the inner wall of the fixed cavity 26. The mold release agent built in the scraping block 23 is guided into the positioning cavity 210 inside the connecting frame 28 and fully infiltrates the coating roller 211. As the scraping block 23 completes the scraping work and continues to move, the coating roller 211 infiltrated with the mold release agent immediately adheres tightly to the surface of the mold plate 11 to perform uniform mold release agent coating, providing good mold release conditions for subsequent die-casting operations, reducing the residual metal on the surface of the mold plate 11, and the coating of the mold release agent helps the next cleaning of the surface of the mold plate 11. When the scraping block 23 encounters the fixed pipe 13 on the mold plate 11 again, the connecting frame 28 quickly adjusts its position under the action of the restoring force of the compression spring 27, causing the fixing groove 29 to be misaligned with the connecting groove 212, cutting off the supply of the mold release agent, preventing the mold release agent from infiltrating into the positioning cavity 210 in the area where it is not required to be coated, saving the mold release agent, reducing the replenishment of the mold release agent, and improving the cleaning efficiency and production quality;

[0057] Finally, when the scraping block 23, the coating roller 211 and the cleaning roller 213 complete the scraping and coating work, the limiting shaft 217 in the rotating groove 216 on one side of the electric slide table 22 is started. The rotation of the limiting shaft 217 pulls the steel wire between it and the scraping block 23. The steel wire is fixedly connected to the connecting ring 214 on one side of the scraping block 23, and the scraping block 23 is retracted into the storage groove 215. Subsequently, the engine cylinder block is cast again. The storage of the scraping block 23 solves the problem that the scraping block 23 directly abuts against the mold plate 11. After storage, the scraping block 23 does not affect the casting of the engine cylinder block. When it is enabled, releasing the scraping block 23 can clean the mold plate 11, saving the cost of manual cleaning.

[0058] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A HCCI-based engine cylinder preparation process, characterized in that: The following steps are involved: Step 1: After the molten material of the cylinder body is prepared, the cylinder body mold plate (11) is installed on the upper surface of the casting body (1) to prepare for casting; Step 2: injecting the molten alloy material into the mold plate (11), and driving the sealing plate (3) through the hydraulic cylinder (31) on the top wall of the machine body (1) to seal the mold plate (11) filled with the molten alloy; Step 3: After the sealing is completed and the molten alloy is cooled, the sealing plate (3) is lifted, the mold plate (11) is removed, the engine block is taken out, and the mold plate (11) is installed back on the upper surface of the engine body (1), and steps 1 and 2 are repeated to cast the engine block.

2. The HCCI-based engine cylinder preparation process according to claim 1, characterized in that: In step 2, the hydraulic cylinder (31) on the top wall of the engine body (1) is activated, and the hydraulic cylinder (31) drives the sealing plate (3) at its output end to move toward the mold plate (11). When the fixing tube (13) on the surface of the mold plate (11) is inserted into the insertion hole (33) on the lower surface of the sealing plate (3), the insertion column (32) on the lower surface of the sealing plate (3) is also inserted into the fixing hole (14) in the fixing tube (13). In addition, the two insertion plates (34) on the lower surface of the sealing plate (3) are simultaneously inserted into the slot (12) inside the mold plate (11). At this time, the sealed die-casting of the engine cylinder body is completed.

3. The HCCI-based engine cylinder block preparation process according to claim 1, characterized in that: In step three, a mold plate (11) is installed on the upper surface of the machine body (1), and a fixed frame (2) is arranged around the mold plate (11). A scraping component for cleaning the edge of the mold plate (11) is slidably arranged on the fixed frame (2), and the scraping component includes a scraping block (23) abutting against the mold plate (11) to scrape off the metal residue on the edge of the mold plate (11).

4. The HCCI-based engine cylinder preparation process according to claim 3, characterized in that: The scraping work is as follows: First, when the die-casting of the engine cylinder is completed, the hydraulic cylinder (31) drives the sealing plate (3) to separate from the mold plate (11), releases the fixed connection between the mold plate (11) and the body (1), separates the engine cylinder from the mold plate (11), and then reinstalls the mold plate (11) on the upper surface of the body (1). After the mold plate (11) is installed, the electric slide (22) on the upper surface of the fixed frame (2) is started, and the electric slide (22) slides along the fixed guide rail (21) provided on the surface of the fixed frame (2). When the electric slide (22) slides, it drives a scraper (23) which is rotated on one side of the electric slide. The scraper (23) contacts the upper surface of the mold plate (11), and as the electric slide (22) slides, the metal residue on the surface of the mold plate (11) is scraped off.

5. The HCCI-based engine cylinder preparation process according to claim 4, characterized in that: When the scraper block (23) cleans the edge of the mold plate (11) along with the electric slide (22), since the mold plate (11) is provided with a fixed tube (13) connected to the sealing plate (3), when the scraper block (23) abuts against the fixed tube (13), the reaction force of the fixed tube (13) on the scraper block (23) causes the scraper block (23) to rotate around the rotating shaft (24). After bypassing one of the fixed tubes (13), the scraper block (23) is reset under the action of the reset force of the torsion spring (25), and the surface of the mold plate (11) is scraped and cleaned again.

6. The HCCI-based engine cylinder preparation process according to claim 4, characterized in that: When the scraper block (23) is scraping the surface of the mold plate (11), the coating roller (211) inside the scraper block (23) will work synchronously to coat the surface of the mold plate (11) with a release agent.

7. The HCCI-based engine cylinder preparation process according to claim 6, characterized in that: The coating roller (211) specifically works as follows: when the scraper block (23) contacts the mold plate (11), the connection frame (28) in the scraper block (23) is squeezed into the fixed cavity (26) by the mold plate (11). At this time, the fixed grooves (29) on both sides of the connection frame (28) are aligned with the connection grooves (212) on both sides of the inner wall of the fixed cavity (26). The demoulding agent built into the scraper block (23) flows into the positioning cavity (210) in the connection frame (28) and soaks the coating roller (211). After the scraper block (23) performs the scraping work, the coating roller (211) immediately performs the coating work. In addition, when the coating roller encounters the fixed tube (13), the connection groove (212) and the fixed groove (29) are misaligned under the action of the restoring force of the compression spring (27). At this time, the demoulding agent does not penetrate into the positioning cavity (210).

8. The HCCI-based engine cylinder block preparation process according to claim 7, characterized in that: While the scraping block (23) is performing the scraping work, two cleaning rollers (213) rotatably arranged on one side of the scraping block (23) abut against the outer wall of the mold plate (11), and the cleaning rollers (213) and the scraping block (23) work synchronously to clean the metal remaining on the outer wall of the mold plate (11).

9. The HCCI-based engine cylinder block preparation process according to claim 8, characterized in that: When the scraping block (23), the coating roller (211) and the cleaning roller (213) complete the scraping and coating work, the limiting shaft (217) in the rotating groove (216) on one side of the electric slide (22) is started, and the rotation of the limiting shaft (217) pulls the steel wire between the scraping block (23), and the steel wire is fixedly connected to the connecting ring (214) on one side of the scraping block (23), so that the scraping block (23) is received in the receiving groove (215), and then the engine cylinder block is cast again.

10. An HCCI-based engine cylinder block, characterized in that: The method is obtained by the preparation process described in any one of claims 1 to 9.

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