Engine shell casting device

Abstract

The invention discloses an engine shell casting device, and belongs to the technical field of engine casting, the engine shell casting device comprises a workbench, the upper side of the workbench is provided with a material returning part, the material returning part comprises a pushing plate slidably connected in a female die, the left side in the female die is provided with a second air cylinder, and the telescopic end of the second air cylinder is fixedly connected with the left side of the pushing plate; a pushing plate is arranged in the female die, a piston column is fixedly connected to the left side of the pushing plate, a piston cavity is formed in the left side of the interior of the female die, and a pressure sensor is arranged on the left side of the interior of the piston cavity. Due to the fact that the first air cylinder and the second air cylinder always keep synchronous operation in the process of pushing the workpiece, and the workpiece is supported by means of the tool die, deformation of the bottom of the workpiece caused by exerting extra force when the workpiece is returned is effectively avoided, and then the quality of the workpiece in the plastic process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of engine casting, and more particularly to an engine casing casting device. Background Art

[0002] The engine casing is an important part of the engine. It is made of castings. During the manufacturing process, it may need to go through multiple process steps such as casting, machining, and heat treatment. When selecting the material of the engine casing, it is necessary to comprehensively consider factors such as the material's weight, thermal conductivity, thermal expansion coefficient, strength, and cost to ensure the performance and reliability of the engine. The materials of the engine casing are diverse, mainly including aluminum alloy, ceramics, ductile iron, steel, and certain plastics.

[0003] Currently, the engine hood (which can also be understood as part of the engine housing) is mostly made of plastic. It not only looks beautiful but also has excellent performance. Its core function is to protect key components such as spark plugs and solenoid valves from contamination by water, oil, dust, etc. Although parts such as pistons are still made of metal materials, the engine housing is made of plastic. Compared with aluminum alloy housing engines, plastic engine housings are lighter in weight, which helps improve vehicle performance and save fuel. In the prior art, after the plastic hood is blow-molded, an automatic demolding device, such as a robot or a pneumatic / mechanical demolding device, is usually used to remove the molded hood from the mold. This method is suitable for large-scale production and can improve production efficiency and product consistency. However, during automatic demolding, the workpiece will first exit the mother mold, and then the pneumatically driven pusher ring will push the workpiece. Although the workpiece undergoes a cooling step before being withdrawn, the thicker area at the bottom will still be plastic due to incomplete cooling, causing the bottom of the workpiece to deform when the push plate pushes the bottom of the workpiece. Summary of the Invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide an engine casing casting device.

[0005] To solve the above problems, the present invention adopts the following technical solution, which can enable the tool and die to support the workpiece, effectively avoiding deformation of the bottom of the workpiece due to applying additional force when the workpiece is stripped.

[0006] An engine casing casting device includes a workbench and a mother mold arranged on the left side of the upper end of the workbench. A sprue is formed through the back side of the mother mold. A first cylinder is provided on the right side of the upper end of the workbench. The telescopic end of the first cylinder is fixedly connected to the tool mold. A material stripping component is provided on the upper side of the workbench. The material stripping component includes a pushing plate slidably connected to the inside of the mother mold, a second cylinder is provided on the left side of the inside of the mother mold, the telescopic end of the second cylinder is fixedly connected to the left side of the pushing plate, a piston column is fixedly connected to the left side of the pushing plate, a piston cavity is opened on the left side of the inside of the mother mold, a pressure sensor is provided on the left side of the inside of the piston cavity, the piston column is inserted into the piston cavity after movement, and a controller is provided on the front of the workbench.

[0007] Furthermore, the tooling die is in sliding contact with the upper side of the workbench, and after the tooling die moves, it is in extrusion contact with the mother die. After the tooling die is inserted into the mother die, it is in extrusion contact with the right side of the push plate.

[0008] Furthermore, a scraping assembly is provided inside the mother mold, and the scraping assembly includes a scraping ring fixedly connected to the right side of the push plate.

[0009] Furthermore, the right side of the inner surface of the scraper ring is chamfered, and the outer surface of the scraper ring is in sliding contact with the inner side wall of the mother mold.

[0010] Furthermore, a pushing assembly is provided on the upper side of the workbench, and the pushing assembly includes a pushing plate that is arranged in parallel and fixedly connected to the right side of the upper end of the workbench.

[0011] Furthermore, a movable groove is provided through the surface of the tooling die, and after the mother die moves, it is sleeved on the outer side of the fixed plate through the movable groove. The inner four sides of the movable groove are slidably connected to the limiting blocks, and a tension spring is fixedly connected between the right side of the limiting blocks on the front and rear sides and the inner side wall of the movable groove. A push ring is fixedly connected to the left side of the limiting block, and after the push ring moves, it is squeezed into contact with the left side of the fixed plate.

[0012] Furthermore, the push ring is inserted into the left side of the interior of the movable groove, and the shape of the push ring is adapted to the shape of the left side of the interior of the movable groove. The push ring is slidably sleeved on the outer side of the left half of the tooling mold, and the front and rear sides of the upper end of the workbench are provided with sliding grooves, and the interior of the sliding groove is slidably connected to a slider, and the slider is fixedly connected to the lower side of the tooling mold.

[0013] Furthermore, a knocking assembly is provided on the upper side of the workbench, and the knocking assembly includes a first magnetic block fixedly connected to the opposite surfaces of the front and rear corresponding fixed plates and arranged in a horizontal linear array.

[0014] Furthermore, movable grooves are arranged in a horizontal linear array on both the front and rear sides of the right end of the tool mold. A pressure spring is fixedly connected to the side of the movable groove away from the first magnetic block, and the other end of the pressure spring is fixedly connected to a collision block. The collision block is slidably connected to the inside of the movable groove, and the other side of the collision block is fixedly connected to a second magnetic block. After the second magnetic block moves, it is squeezed into contact with the side of the movable groove close to the first magnetic block.

[0015] Furthermore, after the mother mold moves, it is sleeved on the outer side of the first magnetic block through the moving groove, and the first magnetic block and the second magnetic block magnetically repel each other.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention uses a push plate to push the workpiece out of the workpiece while supporting it with the help of a tool. Since the first cylinder and the second cylinder always keep synchronous operation during the process of pushing the workpiece and support the workpiece with the help of the tool, it effectively avoids deformation of the bottom of the workpiece due to the application of additional force when the workpiece is unloaded, thereby ensuring the quality of the workpiece during the plastic process.

[0017] (2) The present invention cleans the inner wall of the mother mold by means of a scraper ring. Since the push plate can use the scraper ring to process the residual raw materials on the inner wall of the mother mold during the movement, it effectively avoids the residual raw materials from affecting the subsequent plastic workpiece, thereby reducing the possibility of bubbles or depressions on the surface of the subsequent workpiece during the plastic process.

[0018] (3) The present invention accelerates the workpiece removal by providing a push ring. Since the push ring 285 pushes the workpiece secured on the outside of the tool during the workpiece removal process, it not only improves the workpiece removal efficiency, but also ensures the flatness of the tool surface after the push plate is reset, thereby ensuring the quality of the workpiece during the plastic process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic cross-sectional view of the present invention; Figure 3 It is a partial enlarged schematic diagram of the mother mold of the present invention; Figure 4 It is a schematic diagram of the left side cross-sectional structure of the tooling of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the movable groove of the present invention; Figure 6 Schematic diagram of the cross-sectional structure of the movable groove of the present invention; Figure 7 It is a structural schematic diagram of the fixing plate of the present invention; Figure 8 It is a structural schematic diagram of the pusher ring of the present invention.

[0020] Description of the numbers in the figure: 1. Workbench; 11. Mother mold; 111. Injection port; 12. First cylinder; 13. Tool; 2. Material removal component; 21. Push plate; 22. Second cylinder; 23. Piston column; 24. Piston chamber; 25. Pressure sensor; 26. Controller; 27. Scraper assembly; 271. Scraper ring; 28. Push assembly; 281. Fixed plate; 282. Movable groove; 283. Limit block; 284. Tension spring; 285. Push ring; 286. Slide groove; 287. Slider; 29. ​​Knocking assembly; 291. First magnetic block; 292. Movable groove; 293. Pressure spring; 294. Impact block; 295. Second magnetic block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 8 An engine casing casting device includes a workbench 1 and a mother mold 11 arranged on the left side of the upper end of the workbench 1. A sprue 111 is formed through the back side of the mother mold 11. A first cylinder 12 is provided on the right side of the upper end of the workbench 1. A tool 13 is fixedly connected to the telescopic end of the first cylinder 12. A material stripping component 2 is provided on the upper side of the workbench 1. The material stripping component 2 includes a pushing plate 21 slidably connected to the inside of the mother mold 11, a second cylinder 22 is provided on the left side of the inside of the mother mold 11, the telescopic end of the second cylinder 22 is fixedly connected to the left side of the pushing plate 21, a piston column 23 is fixedly connected to the left side of the pushing plate 21, a piston cavity 24 is opened on the left side of the inside of the mother mold 11, a pressure sensor 25 is provided on the left side of the inside of the piston cavity 24, the piston column 23 is inserted into the piston cavity 24 after moving, and a controller 26 is provided on the front of the workbench 1.

[0023] The tool die 13 slides on the upper side of the workbench 1 , and after moving, the tool die 13 is pressed into contact with the mother die 11 . After being inserted into the mother die 11 , the tool die 13 is pressed into contact with the right side of the push plate 21 .

[0024] By adopting the above technical solution, the first cylinder 12 is started to push the tool mold 13. When the left end of the tool mold 13 enters the interior of the mother mold 11, the tool mold 13 will push the push plate 21 inside the mother mold 11, and the second cylinder 22 also pulls the push plate 21. As the piston column 23 on the other side of the push plate 21 enters the piston cavity 24, the piston column 23 will squeeze the gas inside the piston cavity 24, so that the pressure generated by the compressed gas is squeezed toward the pressure sensor 25. At the same time, the pressure sensor 25 transmits a signal to the controller 26, and the tool mold 13 is completely matched with the mother mold 11, and the first cylinder 12 is extended to the maximum extension range, and then the controller 26 controls the first cylinder 12 to stop running, but the push plate 21 still has room to move. At this time, the second cylinder 22 continues to pull the push plate 21 until the push plate 21 reaches After reaching the deepest part inside the mother mold 11 and the tool mold 13 is docked with the mother mold 11, the raw material can be input into the cavity between the tool mold 13 and the mother mold 11 through the injection port 111, so that the workpiece is injection molded. After the injection molding is completed, the first cylinder 12 and the second cylinder 22 operate at the same time, the second cylinder 22 pushes the workpiece, and the first cylinder 12 withdraws the mother mold 11 and the workpiece from the mother mold 11. At this time, because the first cylinder 12 and the second cylinder 22 operate at the same time, the gap between the two remains the same until the workpiece completely withdraws from the mother mold 11. Since the first cylinder 12 and the second cylinder 22 always keep running synchronously in the process of pushing the workpiece, and support the workpiece with the help of the tool mold 13, it effectively avoids deformation of the bottom of the workpiece due to the application of additional force when the workpiece is withdrawn, thereby ensuring the quality of the workpiece during the plastic process.

[0025] like Figures 1 to 3 As shown, a scraping assembly 27 is provided inside the female mold 11 , and the scraping assembly 27 includes a scraping ring 271 fixedly connected to the right side of the pushing plate 21 .

[0026] The right side of the inner surface of the scraper ring 271 is chamfered, and the outer surface of the scraper ring 271 is in sliding contact with the inner side wall of the mother mold 11.

[0027] By adopting the above technical solution, when the push plate 21 is used to return the workpiece with the help of the second cylinder 22, the scraper ring 271 arranged on the side of the push plate 21 will move together with the push plate 21. Since the side of the push plate 21 is always in contact with the inner wall of the mother mold 11, the scraper ring 271 can scrape the raw material remaining on the inner wall of the mother mold 11 during the movement. Since the push plate 21 can use the scraper ring 271 to process the raw material remaining on the inner wall of the mother mold 11 during the movement, it effectively avoids the residual raw material from affecting the subsequent plastic workpiece, thereby reducing the possibility of bubbles or depressions on the surface of the subsequent workpiece during the plastic process.

[0028] like Figures 4 to 8As shown, a pusher assembly 28 is provided on the upper side of the workbench 1 , and the pusher assembly 28 includes a pusher plate 21 which is arranged in parallel and fixedly connected to the right side of the upper end of the workbench 1 .

[0029] A movable groove 282 is provided through the surface of the tooling die 13. After the mother die 11 moves, it is sleeved on the outer side of the fixed plate 281 through the movable groove 282. The inner four sides of the movable groove 282 are slidably connected with the limiting blocks 283. A tension spring 284 is fixedly connected between the right side of the limiting blocks 283 on the front and rear sides and the inner wall of the movable groove 282. A push ring 285 is fixedly connected to the left side of the limiting block 283. After the push ring 285 moves, it is squeezed into contact with the left side of the fixed plate 281.

[0030] The push ring 285 is inserted into the left side of the inner part of the movable groove 282. The shape of the push ring 285 is adapted to the shape of the left side of the inner part of the movable groove 282. The push ring 285 is slidably sleeved on the outer side of the left half of the tool 13. The front and rear sides of the upper end of the workbench 1 are provided with a slide groove 286. The inner part of the slide groove 286 is slidably connected to a slider 287, and the slider 287 is fixedly connected to the lower side of the tool 13.

[0031] By adopting the above technical solution, as the first cylinder 12 pulls the tool 13, the fixed plate 281 originally fixed on the workbench 1 will gradually insert into the movable groove 282 inside the tool 13, and when the fixed plate 281 contacts the push ring 285 inside the movable groove 282, because the other side of the push block contacts the plastically completed workpiece, if the push block is pushed out of the movable groove 282 by the fixed plate 281, the workpiece wrapped on the outside of the tool 13 will also be pushed until it is separated from the tool 13, and while the push ring 285 is pushed, the limit plate outside the push ring 285 will slide inside the movable groove 282 and compress the tension spring 284 inside the movable groove 282, and the push ring 285 will be pressed against the movable groove 282 by the limit plate. 282 slides internally, so that the pusher ring 285 cannot be completely separated from the tool 13. When the subsequent workpiece needs to be plasticized, the first cylinder 12 pushes the tool 13, so that the fixed plate 281 gradually separates from the movable groove 282, and the pusher ring 285 that has lost the restriction of the fixed plate 281 gradually resets under the pull of the tension spring 284. The pusher ring 285 is completely docked with the side of the tool 13 to ensure that the side of the tool 13 remains flat. Since the pusher ring 285 pushes the workpiece on the outside of the tool 13 during the process of withdrawing the workpiece from the tool 13, it not only improves the efficiency of withdrawing the workpiece, but also ensures the flatness of the surface of the tool 13 after the push plate 21 is reset, so that the quality of the workpiece during the plasticization process is guaranteed.

[0032] like Figures 3 to 7As shown, a knocking assembly 29 is provided on the upper side of the workbench 1. The knocking assembly 29 includes first magnetic blocks 291 fixedly connected to the opposite surfaces of the front and rear corresponding fixing plates 281 and arranged in a horizontal linear array.

[0033] The front and rear sides of the right end of the tool 13 are arranged in a horizontal linear array with movable grooves 292. A pressure spring 293 is fixedly connected to the side of the movable groove 292 away from the first magnetic block 291, and the other end of the pressure spring 293 is fixedly connected to the impact block 294. The impact block 294 is slidably connected to the inside of the movable groove 292, and the other side of the impact block 294 is fixedly connected to the second magnetic block 295. After the second magnetic block 295 moves, it is squeezed and contacted with the side of the movable groove 292 close to the first magnetic block 291.

[0034] After the mother mold 11 moves, it is sleeved on the outer side of the first magnetic block 291 through the moving groove 282 , and the first magnetic block 291 and the second magnetic block 295 magnetically repel each other.

[0035] By adopting the above technical solution, when the fixed plate 281 enters the movable groove 282, the first magnetic block 291 arranged on its side will also enter the movable groove 282. Because the second magnetic block 295 in the movable groove 292 magnetically repels the first magnetic block 291, when the position of the first magnetic block 291 corresponds to the position of the movable groove 292, the first magnetic block 291 remains fixed, and the second magnetic block 295 in the movable groove 292 moves inside the movable groove 292 under the action of the repulsive force of the first magnetic block 291, so that the impact block 294 squeezes the pressure spring 293, and after the first magnetic block 291 is misaligned with the movable groove 292, the first magnetic block 291 is pressed against the pressure spring 293. The repulsive force of the second magnetic block 295 is reduced. At this time, the pressure spring 293 pushes the impact block 294, so that the impact block 294 and the second magnetic block 295 quickly collide with the inner wall of the movable groove 292, thereby causing the tool 13 to shake slightly, and the workpiece sleeved on the outside of the tool 13 will become loose due to the shaking of the tool 13. Since the fixed plate 281 will cause the impact block 294 to hit the inside of the movable groove 292 when pushing the push ring 285, the tool 13 will become loose due to vibration, thereby improving the efficiency of the push ring 285 in pushing the workpiece, thereby increasing the material withdrawal speed of the workpiece, and improving the plastic efficiency of subsequent workpieces.

[0036] Working principle: Start the first cylinder 12 to push the tool mold 13. As the piston rod 23 on the other side of the push plate 21 enters the piston cavity 24, the pressure generated by the compression squeezes the pressure sensor 25. The pressure sensor 25 transmits a signal to the controller 26. The controller 26 controls the first cylinder 12 to stop running. At this time, the second cylinder 22 continues to pull the push plate 21. After the tool mold 13 and the mother mold 11 are connected, the raw material can be input into the cavity between the tool mold 13 and the mother mold 11 through the injection port 111, so that the workpiece is completed. After the injection molding is completed, After that, because the first cylinder 12 and the second cylinder 22 operate at the same time, the gap between them is always kept the same until the workpiece completely exits the mother mold 11. During this process, the scraper ring 271 set on the side of the pushing plate 21 will move together with the pushing plate 21, so that the scraper ring 271 can scrape the residual material on the inner wall of the mother mold 11 during the movement. As the first cylinder 12 pulls the mold 13, the fixed plate 281 originally fixed on the workbench 1 will gradually insert into the moving groove 282 inside the mold 13. If the pushing block is blocked by the fixed plate 28 1 is pushed out of the movable groove 282, and the workpiece wrapped on the outside of the tool mold 13 will also be pushed until it is separated from the tool mold 13. When the subsequent workpiece needs to be plasticized, the push ring 285, which has lost the restriction of the fixed plate 281, is gradually reset under the pull of the tension spring 284. When the fixed plate 281 enters the movable groove 282, the first magnetic block 291 set on its side will also enter the movable groove 282. Because the second magnetic block 295 in the movable groove 292 is magnetically repelled from the first magnetic block 291, when the position of the first magnetic block 291 corresponds to the position of the movable groove 292, When the first magnetic block 291 is fixed, the second magnetic block 295 in the movable groove 292 moves inside the movable groove 292 under the action of the repulsive force of the first magnetic block 291, so that the impact block 294 squeezes the pressure spring 293. After the first magnetic block 291 and the movable groove 292 are misaligned, the repulsive force of the first magnetic block 291 on the second magnetic block 295 is reduced. At this time, the pressure spring 293 pushes the impact block 294, so that the impact block 294 and the second magnetic block 295 quickly collide with the inner wall of the movable groove 292, thereby causing the tool 13 to shake slightly.

[0037] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An engine casing casting device, comprising a workbench (1) and a mother mold (11) arranged on the left side of the upper end of the workbench (1), wherein an injection port (111) is provided through the back side of the mother mold (11), a first cylinder (12) is provided on the right side of the upper end of the workbench (1), and a tool mold (13) is fixedly connected to the telescopic end of the first cylinder (12), characterized in that: A material stripping component (2) is provided on the upper side of the workbench (1); The material stripping component (2) includes a push plate (21) slidably connected to the inside of the mother mold (11), a second cylinder (22) is provided on the left side of the inside of the mother mold (11), the telescopic end of the second cylinder (22) is fixedly connected to the left side of the push plate (21), a piston column (23) is fixedly connected to the left side of the push plate (21), a piston cavity (24) is provided on the left side of the inside of the mother mold (11), a pressure sensor (25) is provided on the left side of the inside of the piston cavity (24), the piston column (23) is inserted into the inside of the piston cavity (24) after moving, and a controller (26) is provided on the front of the workbench (1).

2. The engine casing casting device according to claim 1, characterized in that: The tooling die (13) is in sliding contact with the upper side of the workbench (1), and after the tooling die (13) moves, it is in extrusion contact with the mother die (11). After the tooling die (13) is inserted into the inside of the mother die (11), it is in extrusion contact with the right side of the push plate (21).

3. The engine casing casting device according to claim 1, characterized in that: A scraping assembly (27) is provided inside the female mold (11), and the scraping assembly (27) comprises a scraping ring (271) fixedly connected to the right side of the push plate (21).

4. The engine casing casting device according to claim 3, characterized in that: The right side of the inner surface of the scraper ring (271) is chamfered, and the outer surface of the scraper ring (271) is in sliding contact with the inner side wall of the mother mold (11).

5. The engine casing casting device according to claim 1, characterized in that: A material pushing assembly (28) is provided on the upper side of the workbench (1), and the material pushing assembly (28) comprises a pushing plate (21) which is arranged in parallel and fixedly connected to the right side of the upper end of the workbench (1).

6. The engine casing casting device according to claim 5, characterized in that: A movable groove (282) is provided through the surface of the tool mold (13). After the mother mold (11) moves, it is sleeved on the outer side of the fixed plate (281) through the movable groove (282). The inner periphery of the movable groove (282) is slidably connected to the limiting blocks (283). Tension springs (284) are fixedly connected between the right sides of the limiting blocks (283) on the front and rear sides and the inner side walls of the movable groove (282). A push ring (285) is fixedly connected to the left side of the limiting block (283). After the push ring (285) moves, it is squeezed and contacted with the left side of the fixed plate (281).

7. The engine casing casting device according to claim 6, characterized in that: The push ring (285) is inserted into the left side of the inner part of the movable groove (282). The shape of the push ring (285) is adapted to the shape of the left side of the inner part of the movable groove (282). The push ring (285) is slidably mounted on the outer side of the left half of the tool (13). The front and rear sides of the upper end of the workbench (1) are both provided with a slide groove (286). The inner part of the slide groove (286) is slidably connected to a slider (287). The slider (287) is fixedly connected to the lower side of the tool (13).

8. The engine casing casting device according to claim 6, characterized in that: A knocking assembly (29) is provided on the upper side of the workbench (1). The knocking assembly (29) comprises first magnetic blocks (291) fixedly connected to opposite surfaces of front and rear corresponding fixing plates (281) and arranged in a transverse linear array.

9. The engine casing casting device according to claim 8, characterized in that: The front and rear sides of the right end of the tool (13) are both arranged in a transverse linear array with movable grooves (292), and a pressure spring (293) is fixedly connected to the side of the movable groove (292) away from the first magnetic block (291), and the other end of the pressure spring (293) is fixedly connected to a collision block (294), and the collision block (294) is slidably connected to the inside of the movable groove (292). The other side of the collision block (294) is fixedly connected to a second magnetic block (295), and after the second magnetic block (295) moves, it is squeezed and contacted with the side of the movable groove (292) close to the first magnetic block (291).

10. The engine casing casting device according to claim 9, characterized in that: After the mother mold (11) moves, it is sleeved on the outside of the first magnetic block (291) through the moving groove (282), and the first magnetic block (291) and the second magnetic block (295) magnetically repel each other.

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