Automobile flywheel low-pressure outer die

Abstract

The utility model discloses a low-pressure outer mold of an automobile flywheel, and belongs to the field of manufacturing of automobile flywheel parts. The automobile flywheel low-pressure outer mold comprises a workbench, the upper surface of the workbench is fixedly connected with a main body frame, an injection molding pipe is installed above the main body frame, the upper surface of the workbench is fixedly connected with a guide rod set, and the outer wall of the guide rod set is slidably connected with an upper mold; a lower die is fixedly connected to the position, corresponding to the upper die, of the upper surface of the workbench, metal particles and dust impurities in a die groove are absorbed, cleanliness of the surface of the die can be kept, the impurities are prevented from affecting the forming quality of a flywheel, surface defects can be reduced, the surface smoothness and quality of the flywheel are improved, and meanwhile, the flywheel forming quality is improved. The suction force at the nozzle can absorb part of high temperature generated by the outer wall of the flywheel, so that the cooling time after the flywheel is manufactured is shortened, and the production efficiency of the whole equipment for manufacturing the flywheel is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile flywheel component manufacturing, and in particular to a low-pressure outer mold for an automobile flywheel. Background Art

[0002] The low-pressure outer mold of automobile flywheel is a metal casting process suitable for the production of large and complex-shaped parts, such as automobile flywheels. In the low-pressure outer mold casting process, the metal material (usually aluminum alloy or cast iron) is first heated to a liquid state, and then the molten metal is injected into a pre-made outer mold by pressure. The outer mold is made of high-temperature resistant materials and is used to shape and cool the metal to finally form the required parts. In addition, the low-pressure outer mold manufacturing of automobile flywheels usually requires precise mold design and manufacturing to ensure the dimensional accuracy and quality stability of the flywheel. Through the low-pressure outer mold casting process, high-quality and high-precision automobile flywheels can be produced with good balance and durability to meet the working requirements of automobile engines.

[0003] A patent with publication number CN206898354U discloses a low-pressure mold for an automobile wheel hub, including a mold frame, an upper mold, a bottom mold and a side mold. The mold frame includes an upper mold frame and a lower mold frame. The upper mold is installed on the upper mold frame, and the bottom mold is installed on the lower mold frame. The upper mold is located above the bottom mold, and the side mold is arranged around the upper mold. The side mold, the upper mold and the bottom mold together form an automobile wheel hub cavity for casting automobile wheel hub blanks. The above-mentioned low-pressure mold is cooled by spoke grooves so that the front spokes of the automobile wheel hub are evenly cooled, and grooves are dug in the bottom mold material, which greatly reduces the investment cost of the mold.

[0004] However, the above technical solution has the following defects:

[0005] (1) In the prior art, when manufacturing a flywheel mold, if the lubrication is insufficient or uneven during the process of injecting metal materials into the mold, friction will occur during the flow of the metal material, resulting in the generation of metal particles and debris. In addition, the metal material may be contaminated by external factors during processing and storage, such as dust, oil and other impurities. These impurities will also enter the mold cavity along with the metal material, resulting in metal particles and debris, as well as dust and impurities remaining on the outer wall of the mold manufactured later.

[0006] (2) In the process of manufacturing flywheel molds using the prior art, the mold base of the equipment will be subject to wear and impact fatigue after long-term use. In particular, under high pressure and high temperature environments, the mold base is easily damaged by repeated impact and extrusion, as well as the discharge of molten metal from the inside of the injection tube. Wear and fatigue will cause the structure of the base to loosen or deform, which will cause the position of the mold base to shift, thereby affecting the molding quality of the flywheel. An unstable mold base will cause the flywheel surface to be uneven, the size to be inaccurate, and even defects such as cracks to appear, thereby affecting product quality. Utility Model Content

[0007] One purpose of the present application is to centrally remove and collect the metal particles and dust impurities remaining inside the mold groove when manufacturing the flywheel.

[0008] In order to achieve the above purpose, the technical solution adopted in the present application is: a low-pressure outer mold of an automobile flywheel, including a workbench, the upper surface of the workbench is fixedly connected to a main frame, an injection molding tube is installed above the main frame, the upper surface of the workbench is fixedly connected to a guide rod group, the outer wall of the guide rod group is slidably connected to an upper mold, and a lower mold is fixedly connected to the position of the upper mold on the upper surface of the workbench, mold grooves are provided on the corresponding sides of the upper mold and the mold manufacturing pretreatment mechanisms are symmetrically arranged on both sides of the lower mold, and a wear warning mechanism is provided on the lower surface of the lower mold.

[0009] Preferably, the mold manufacturing pretreatment mechanism includes a limiting ring symmetrically fixedly connected to the side wall of the workbench, the inner wall of the limiting ring is fixedly connected to the piston cylinder, the inner wall of the piston cylinder is slidably connected to the piston rod, the outer wall of the piston rod is sleeved with a spring, the outer wall of the piston cylinder is connected to a branch pipe, a one-way valve is installed inside the branch pipe close to one end of the piston cylinder, the end of the branch pipe away from the piston cylinder is connected to a nozzle, the outer wall of the nozzle is fixedly connected to a connecting plate, a check valve is installed inside the lower end of the piston cylinder, the lower end of the piston cylinder is connected to a storage cylinder, the outer wall of the storage cylinder is sleeved with a positioning frame, the end of the positioning frame away from the storage cylinder is fixedly connected to the side wall of the workbench, and the two side walls of the upper mold are fixedly connected to abutment plates.

[0010] Preferably, the piston rod is located on the movement path of the abutment plate, and the piston rod is initially located at the uppermost end inside the piston cylinder, and the two ends of the spring are fixedly connected to the piston rod and the piston cylinder respectively.

[0011] Preferably, the branch pipe as a whole is composed of three rubber tubes, and the branch pipe is initially in an open state, the check valve is initially in a closed state, and the storage tube is entirely made of a transparent material.

[0012] Preferably, the wear warning mechanism includes a fixed rod symmetrically fixedly connected to the lower surface of the lower mold, the fixed rod has a roller rotatably connected to one end away from the lower mold, the roller has a slider with an axis installed on one end away from the fixed rod, the slider with an axis is slidably connected to the front side wall of the workbench, the slider with an axis is fixedly connected to a nut sleeve at one end away from the roller, a screw is threadedly connected to the inner wall of the nut sleeve, the screw is rotatably connected to the front side wall of the workbench, the screw is fixedly connected to a control switch at one end away from the workbench, and a warning light is rotatably connected to the side of the control switch away from the screw rod.

[0013] Preferably, a slide groove is provided at a position of the inclined surface block in the shaft slider corresponding to the roller, and the shaft slider is slidably connected to the roller via the slide groove.

[0014] Preferably, a ball screw structure is formed between the nut sleeve and the screw rod, and the warning light is initially in an off state.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] 1. By resetting the upper mold, the nozzle is automatically triggered to absorb and remove the metal particles and impurities in the mold groove in time, which can reduce their wear and corrosion on the mold surface, thereby extending the service life of the mold and reducing maintenance costs. In addition, absorbing the metal particles and dust impurities inside the mold groove can keep the mold surface clean and prevent these impurities from affecting the molding quality of the flywheel. This can reduce surface defects and improve the surface finish and quality of the flywheel. At the same time, the suction at the nozzle will absorb part of the high temperature generated by the outer wall of the flywheel, thereby shortening the cooling time after the flywheel is manufactured, thereby improving the production efficiency of the entire equipment for manufacturing flywheels;

[0017] 2 The metal particles and dust impurities absorbed into the piston cylinder will be gradually discharged into the interior of the positioning frame as the upper mold moves downward, so that the internal absorption environment of the piston cylinder remains unchanged when absorbing and processing metal particles and dust impurities, thereby improving the working stability of the piston cylinder. At the same time, since the storage cylinder is made of transparent material as a whole and is installed above the workbench through the positioning frame, the staff can directly observe the amount of impurities accumulated in the storage cylinder and replace it in time;

[0018] 3. Promptly remind the staff of abnormal conditions in the lower mold and timely discover the damage and deviation of the lower mold to prevent equipment failure or accidents. The alarm can remind the operator to take timely measures to avoid further damage to the equipment or production interruption, and ensure that the staff can handle it quickly, reduce the use time of damaged equipment, and avoid additional expenses caused by equipment damage. At the same time, the problem of damaged and deviated mold base can be dealt with in time to ensure the accuracy and quality of the flywheel production process and improve the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0020] Figure 2 This is a structural schematic diagram of a mold manufacturing pretreatment mechanism for a low-pressure outer mold of an automobile flywheel proposed by the utility model;

[0021] Figure 3 This is a partial structural schematic diagram of a mold manufacturing pretreatment mechanism for a low-pressure outer mold of an automobile flywheel proposed by the utility model;

[0022] Figure 4 For this utility model Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the piston cylinder and other parts of a low-pressure outer mold of an automobile flywheel proposed by the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of a wear warning mechanism for a low-pressure outer mold of an automobile flywheel proposed by the utility model;

[0025] Figure 7 This is a partial structural schematic diagram of a wear warning mechanism for a low-pressure outer mold of an automobile flywheel proposed by the utility model;

[0026] Figure 8 It is a partial enlarged three-dimensional structural schematic diagram of point B in the utility model.

[0027] In the figure:

[0028] 1. Workbench; 11. Main frame; 12. Injection tube; 13. Guide rod assembly; 14. Upper mold; 15. Lower mold;

[0029] Mold manufacturing pretreatment mechanism; 21, limit ring; 22, piston cylinder; 23, piston rod; 24, spring; 25, branch pipe; 26, one-way valve; 27, nozzle; 28, connecting plate; 29, check valve; 210, storage cylinder; 211, positioning frame; 212, abutment plate;

[0030] 3. Wear warning mechanism; 31. Fixed rod; 32. Roller; 33. Slider with shaft; 34. Nut sleeve; 35. Screw rod; 36. Control switch; 37. Warning light. DETAILED DESCRIPTION

[0031] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0034] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0035] The prior art has the following defects:

[0036] (1) In the prior art, when manufacturing a flywheel mold, if the lubrication is insufficient or uneven during the process of injecting metal material into the mold, friction will occur during the flow of the metal material, resulting in the generation of metal particles and debris. In addition, the metal material may be contaminated by external factors during processing and storage, such as dust, oil and other impurities. These impurities will also enter the mold cavity along with the metal material, resulting in metal particles and debris, as well as dust impurities remaining on the outer wall of the mold manufactured subsequently.

[0037] (2) In the process of manufacturing flywheel molds using the prior art, the mold base of the equipment will be subject to wear and impact fatigue after long-term use. In particular, under high pressure and high temperature environments, the mold base is easily damaged by repeated impact and extrusion, as well as the discharge of molten metal from the inside of the injection tube. Wear and fatigue will cause the structure of the base to loosen or deform, which will cause the position of the mold base to shift, thereby affecting the molding quality of the flywheel. An unstable mold base will cause the flywheel surface to be uneven, the size to be inaccurate, and even defects such as cracks to appear, thereby affecting product quality.

[0038] As an improvement, Figure 1 As shown, the preferred embodiments of the present application are:

[0039] A low-pressure outer mold for an automobile flywheel comprises a workbench 1, the upper surface of the workbench 1 is fixedly connected to a main frame 11, an injection tube 12 is installed above the main frame 11, the upper surface of the workbench 1 is fixedly connected to a guide rod group 13, an outer wall of the guide rod group 13 is slidably connected to an upper mold 14, a lower mold 15 is fixedly connected to the position of the upper surface of the workbench 1 corresponding to the upper mold 14, mold grooves are provided on the sides corresponding to each other of the upper mold 14 and mold manufacturing pretreatment mechanisms 2 are symmetrically arranged on both sides of the lower mold 15, and a wear warning mechanism 3 is provided on the lower surface of the lower mold 15.

[0040] like Figures 2 to 5As shown, in this embodiment, the mold manufacturing pretreatment mechanism 2 includes a limit ring 21 symmetrically fixedly connected to the side wall of the workbench 1, the inner wall of the limit ring 21 is fixedly connected to a piston cylinder 22, the inner wall of the piston cylinder 22 is slidably connected to a piston rod 23, the outer wall of the piston rod 23 is sleeved with a spring 24, the outer wall of the piston cylinder 22 is connected to a branch pipe 25, the inner part of the branch pipe 25 close to one end of the piston cylinder 22 is installed with a one-way valve 26, the end of the branch pipe 25 away from the piston cylinder 22 is connected to a nozzle 27, the outer wall of the nozzle 27 is fixedly connected to a connecting plate 28, the lower end of the piston cylinder 22 is installed with a check valve 29, the lower end of the piston cylinder 22 It is connected to a storage cylinder 210, and a positioning frame 211 is sleeved on the outer wall of the storage cylinder 210. The end of the positioning frame 211 away from the storage cylinder 210 is fixedly connected to the side wall of the workbench 1, and the two side walls of the upper mold 14 are fixedly connected with abutment plates 212. The piston rod 23 is located on the movement path of the abutment plate 212, and the piston rod 23 is initially located at the uppermost end inside the piston cylinder 22. The two ends of the spring 24 are fixedly connected to the piston rod 23 and the piston cylinder 22 respectively. The branch pipe 25 is composed of three rubber tubes as a whole, and the branch pipe 25 is initially in an open state. The check valve 29 is initially in a closed state, and the storage cylinder 210 is configured as a transparent material as a whole.

[0041] Specifically, since the abutment plates 212 are symmetrically fixedly connected to the two side walls of the upper mold 14, when the upper mold 14 slides downward along the outer wall of the guide rod group 13 to fit above the lower mold 15, the abutment plates 212 will move downward synchronously with the upper mold 14. Since the piston rod 23 is located on the movement path of the abutment plates 212, and the piston rod 23 is initially located at the uppermost end inside the piston cylinder 22, when the abutment plates 212 move to contact the upper surface of the piston rod 23, the piston rod 23 will be squeezed downward by the abutment plates 212, and then move downward synchronously with the abutment plates 212. At this time, the springs 24 which are respectively fixedly connected to the piston rod 23 and the piston cylinder 22 are During the downward movement of the piston rod 23, it is gradually compressed to a tight state, and since the branch pipe 25 is initially in an open state, the check valve 29 is initially in a closed state. At the same time, when the piston rod 23 moves downward along the inner wall of the piston cylinder 22, the space inside the piston cylinder 22 gradually becomes smaller, and at this time, the air pressure inside the piston cylinder 22 is greater than the air pressure outside the piston cylinder 22, thereby generating a thrust inside the piston cylinder 22. When this thrust acts on the branch pipe 25 and the surface of the check valve 29 inside the piston cylinder 22, the branch pipe 25 will be turned from the initial open state to the closed state, and the check valve 29 will be turned from the initial closed state to the open state. When the subsequent upper mold 14 and After the lower mold 15 is completely fitted, and the metal liquid flows through the injection tube 12 to the mold grooves opened on the surfaces of the upper mold 14 and the lower mold 15 for casting, the piston rod 23 stops moving downward with the upper mold 14. At the same time, when the equipment completes the flywheel manufacturing, the upper mold 14 will move upward along the outer wall of the guide rod group 13 to return to its original position to wait for the next flywheel manufacturing of the equipment. At this time, the squeezing force of the abutment plate 212 on the top of the piston rod 23 disappears. Therefore, the piston rod 23 will gradually return to its original state by relying on the rebound force of the spring 24. At this time, the space inside the piston cylinder 22 gradually becomes larger, and the air pressure inside the piston cylinder 22 is less than the air pressure outside the piston cylinder 22. The force generates suction inside the piston cylinder 22. When the suction acts on the branch pipe 25 and the surface of the check valve 29 inside the piston cylinder 22, the branch pipe 25 is turned from the closed state to the open state, and the check valve 29 is turned from the open state to the closed state. Since the end of the branch pipe 25 away from the piston cylinder 22 is connected to the nozzle 27, and the connecting plate 28 fixedly connected to the outer wall of the nozzle 27 is located outside the mold groove of the lower mold 15 as a whole, when the piston rod 23 moves upward inside the piston cylinder 22, the suction generated inside it will continue to absorb the metal particles and dust impurities remaining on the surface of the mold groove of the lower mold 15 when the flywheel is manufactured through the nozzle 27.

[0042] When the above-mentioned device is in use, the upper mold 14 is reset to automatically trigger the nozzle 27 to absorb and remove the metal particles and impurities in the mold groove in time, which can reduce their wear and corrosion on the mold surface, thereby extending the service life of the mold and reducing maintenance costs. In addition, the absorption of metal particles and dust impurities inside the mold groove can keep the mold surface clean and prevent these impurities from affecting the molding quality of the flywheel. This can reduce surface defects and improve the surface finish and quality of the flywheel. At the same time, the suction force at the nozzle 27 will absorb part of the high temperature generated by the outer wall of the flywheel, thereby shortening the cooling time after the flywheel is manufactured, thereby improving the production efficiency of the entire equipment for manufacturing flywheels.

[0043] like Figures 6 to 8 As shown, in this embodiment, the wear warning mechanism 3 includes a fixed rod 31 symmetrically fixedly connected to the lower surface of the lower mold 15, the end of the fixed rod 31 away from the lower mold 15 is rotatably connected to the roller 32, the end of the roller 32 away from the fixed rod 31 is installed with an axle slider 33, the axle slider 33 is slidably connected to the front side wall of the workbench 1, the end of the axle slider 33 away from the roller 32 is fixedly connected to a nut sleeve 34, the inner wall of the nut sleeve 34 is threadedly connected with a screw rod 35, the screw rod 35 is rotatably connected to the front side wall of the workbench 1, the end of the screw rod 35 away from the workbench 1 is fixedly connected to a control switch 36, the side of the control switch 36 away from the screw rod 35 is rotatably connected to a warning light 37, the inclined surface block in the axle slider 33 corresponds to the position of the roller 32 with a slide groove, the axle slider 33 and the roller 32 are slidably connected through the slide groove, a ball screw structure is formed between the nut sleeve 34 and the screw rod 35, and the warning light 37 is initially in a closed state.

[0044] Specifically, the lower mold 15 of the device will cause wear and fatigue of the mold base after long-term use. Especially in the environment of high pressure and high temperature, the lower mold 15 is easily damaged by repeated impact and extrusion of the upper mold 14 and the discharge of molten metal from the injection tube 12. The wear and fatigue will cause the structure of the base to loosen or deform, and then cause the deviation of the lower mold 15. Since the fixing rod 31 is fixedly connected to the lower surface of the lower mold 15 as a whole, when the lower mold 15 moves downward due to the above situation, the fixing rod 31 will move synchronously with it. Since the inclined block in the belt shaft slider 33 corresponds to the roller The wheel 32 is provided with a slide groove, and the shaft slider 33 is slidably connected to the roller 32 through the slide groove. Therefore, the downwardly moved fixed rod 31 will continuously press the shaft slider 33 downward through the roller 32, thereby driving the shaft slider 33 to keep sliding in a straight line along the front side wall of the workbench 1. Since the shaft slider 33 is fixedly connected to the nut sleeve 34, and a ball screw structure is formed between the nut sleeve 34 and the lead screw 35, the nut sleeve 34 driven by the shaft slider 33 and moving synchronously therewith will drive the lead screw 35 to rotate. Since the end of the lead screw 35 away from the workbench 1 is fixedly connected to a control switch 36;

[0045] When the above device is used, the warning light 37 is triggered, turning it from the initial closed state to the open state, and then the alarm is pre-sounded, prompting the staff in time that there is an abnormal situation with the lower mold 15. Timely discovery of the damage and displacement of the lower mold 15 can prevent equipment failure or accidents. The alarm can remind the operator to take timely measures to avoid further damage to the equipment or production interruption, and ensure that the staff can handle it quickly, reduce the use time of the damaged equipment, and avoid additional expenses caused by equipment damage. At the same time, the problem of damaged and offset mold base can be dealt with in time to ensure the accuracy and quality of the flywheel production process and improve the product qualification rate.

[0046] The working principle of this application is:

[0047] Since the abutment plates 212 are symmetrically fixedly connected to the two side walls of the upper mold 14, when the upper mold 14 slides downward along the outer wall of the guide rod group 13 to fit above the lower mold 15, the abutment plates 212 will move downward synchronously with the upper mold 14. Since the piston rod 23 is located on the movement path of the abutment plates 212, and the piston rod 23 is initially located at the uppermost end inside the piston cylinder 22, when the abutment plates 212 move to contact the upper surface of the piston rod 23, the piston rod 23 will be squeezed downward by the abutment plates 212, and then move downward synchronously with the abutment plates 212. At this time, the springs 212 fixedly connected to the piston rod 23 and the piston cylinder 22, respectively, During the downward movement of the piston rod 23, it is gradually compressed to a tight state, and since the branch pipe 25 is initially in an open state, the check valve 29 is initially in a closed state. At the same time, when the piston rod 23 moves downward along the inner wall of the piston cylinder 22, the space inside the piston cylinder 22 gradually becomes smaller, and at this time, the air pressure inside the piston cylinder 22 is greater than the air pressure outside the piston cylinder 22, thereby generating a thrust inside the piston cylinder 22. When this thrust acts on the branch pipe 25 and the surface of the check valve 29 inside the piston cylinder 22, the branch pipe 25 is turned from the initial open state to the closed state, and the check valve 29 is turned from the initial closed state to the open state;

[0048] When the subsequent upper mold 14 and the lower mold 15 are completely fitted together, and the metal liquid flows through the injection tube 12 to the mold grooves opened on the surfaces of the upper mold 14 and the lower mold 15 for casting, the piston rod 23 stops moving downward with the upper mold 14. At the same time, when the equipment completes the flywheel manufacturing, the upper mold 14 will move upward along the outer wall of the guide rod group 13 to return to its original position to wait for the next flywheel manufacturing of the equipment. At this time, the squeezing force of the abutment plate 212 on the top of the piston rod 23 disappears. Therefore, the piston rod 23 will gradually return to its original state relying on the rebound force of the spring 24. At this time, the space inside the piston cylinder 22 gradually becomes larger, and the air pressure inside the piston cylinder 22 is less than the air pressure outside the piston cylinder 22, thereby generating suction inside the piston cylinder 22. When this suction acts on the branch pipe 25 inside the piston cylinder 22 and the surface of the check valve 29, the branch pipe 25 will be turned from the above-mentioned closed state to the open state, and the check valve 29 will be turned from the above-mentioned open state to the closed state. Since the branch pipe 25 is away from One end of the piston cylinder 22 is connected to a nozzle 27, and a connecting plate 28 fixedly connected to the outer wall of the nozzle 27 is located outside the mold groove of the lower mold 15 as a whole. Therefore, when the piston rod 23 moves upward inside the piston cylinder 22, the suction force generated inside the piston cylinder 22 will continuously absorb the metal particles and dust impurities remaining on the surface of the mold groove of the lower mold 15 when the flywheel is manufactured through the nozzle 27. By resetting the upper mold 14, the nozzle 27 is automatically triggered to absorb and remove the metal particles and impurities in the mold groove in time, which can reduce their wear and corrosion on the mold surface, thereby extending the service life of the mold and reducing maintenance costs. In addition, absorbing the metal particles and dust impurities inside the mold groove can keep the mold surface clean and prevent these impurities from affecting the molding quality of the flywheel, which can reduce surface defects and improve the surface finish and quality of the flywheel. At the same time, the suction force at the nozzle 27 will absorb part of the high temperature generated by the outer wall of the flywheel, thereby shortening the cooling time after the flywheel is manufactured, thereby improving the production efficiency of the entire equipment for manufacturing flywheels.

[0049] In addition, when the upper mold 14 continues to move downward and repeats the above-mentioned flywheel manufacturing process, according to the above-mentioned process of the upper mold 14 moving downward, a thrust is generated inside the piston cylinder 22, and this thrust will turn the branch pipe 25 from the initial open state to the closed state, and at the same time turn the check valve 29 from the initial closed state to the open state. Therefore, the metal particles and dust impurities absorbed into the piston cylinder 22 will be gradually discharged into the interior of the positioning frame 211 as the upper mold 14 moves downward, so that when the interior of the piston cylinder 22 absorbs and processes the metal particles and dust impurities, its internal absorption environment is guaranteed to remain unchanged, thereby improving the working stability of the piston cylinder 22. At the same time, since the storage cylinder 210 is entirely set to a transparent material, and the storage cylinder 210 is installed above the workbench 1 through the positioning frame 211, the staff can directly observe the amount of impurities accumulated in the storage cylinder 210 and replace it in time;

[0050] Because the lower mold 15 of the equipment will cause wear and fatigue of the mold base after long-term use, especially under high pressure and high temperature environment, the lower mold 15 is easily damaged by repeated impact and extrusion of the upper mold 14, and the discharge of metal solution from the injection tube 12. The wear and fatigue will cause the structure of the base to loosen or deform, and then cause the offset of the lower mold 15. Since the fixing rod 31 is fixedly connected to the lower surface of the lower mold 15 as a whole, when the lower mold 15 moves downward due to the above situation, the fixing rod 31 will move synchronously with it. Since the inclined block in the belt shaft slider 33 corresponds to the position of the roller 32, and the belt shaft slider 33 and the roller 32 are slidably connected through the sliding groove, the above-mentioned downward moving fixing rod 31 will continuously squeeze the belt shaft slider 33 downward through the roller 32, thereby driving the belt shaft slider 33 to keep sliding in a straight line along the front side wall of the workbench 1. Since the belt shaft slider 33 is fixedly connected to the nut sleeve 34, and A ball screw structure is formed between the nut sleeve 34 and the screw rod 35. Therefore, the nut sleeve 34, which is driven by the shaft slider 33 and keeps synchronous linear movement therewith, will drive the screw rod 35 to rotate. Since the end of the screw rod 35 away from the workbench 1 is fixedly connected to the control switch 36, when the screw rod 35 rotates, it will drive the control switch 36 to rotate synchronously, thereby triggering the early warning light 37, causing it to change from an initial closed state to an open state, and then issuing an alarm pre-sound, promptly reminding the staff that there is an abnormality in the lower mold 15. Timely discovery of the damage and displacement of the lower mold 15 can prevent equipment failure or accidents. The alarm can remind the operator to take timely measures to avoid further damage to the equipment or production interruption, and ensure that the staff can handle it quickly, reduce the use time of the damaged equipment, and avoid additional expenses caused by equipment damage. At the same time, the problem of damaged and offset mold base can be dealt with in time to ensure the accuracy and quality of the flywheel production process and improve the product qualification rate.

[0051] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A low-pressure outer mold for an automobile flywheel, comprising a workbench (1), the upper surface of the workbench (1) being fixedly connected to a main frame (11), an injection molding tube (12) being installed above the main frame (11), the upper surface of the workbench (1) being fixedly connected to a guide rod group (13), an outer wall of the guide rod group (13) being slidably connected to an upper mold (14), a lower mold (15) being fixedly connected to the upper surface of the workbench (1) at a position corresponding to the upper mold (14), a mold groove being provided on one side of the upper mold (14) and the lower mold (15) corresponding to each other, characterized in that: Mould manufacturing pretreatment mechanisms (2) are symmetrically arranged on both sides of the lower mould (15), and a wear warning mechanism (3) is arranged on the lower surface of the lower mould (15).

2. A low-pressure outer mold for an automobile flywheel as claimed in claim 1, characterized in that: The mold manufacturing pretreatment mechanism (2) comprises a limit ring (21) symmetrically fixedly connected to the side wall of the workbench (1), the inner wall of the limit ring (21) is fixedly connected to a piston cylinder (22), the inner wall of the piston cylinder (22) is slidably connected to a piston rod (23), the outer wall of the piston rod (23) is sleeved with a spring (24), the outer wall of the piston cylinder (22) is connected to a branch pipe (25), a one-way valve (26) is installed inside the branch pipe (25) near one end of the piston cylinder (22), and the branch pipe (25) is away from the piston cylinder (22). One end of the piston cylinder (22) is connected to a nozzle (27), the outer wall of the nozzle (27) is fixedly connected to a connecting plate (28), a check valve (29) is installed inside the lower end of the piston cylinder (22), the lower end of the piston cylinder (22) is connected to a storage cylinder (210), the outer wall of the storage cylinder (210) is sleeved with a positioning frame (211), the end of the positioning frame (211) away from the storage cylinder (210) is fixedly connected to the side wall of the workbench (1), and both side walls of the upper mold (14) are fixedly connected to abutment plates (212).

3. A low-pressure outer mold for an automobile flywheel as claimed in claim 2, characterized in that: The piston rod (23) is located on the movement path of the abutment plate (212), and the piston rod (23) is initially located at the uppermost end inside the piston cylinder (22), and the two ends of the spring (24) are fixedly connected to the piston rod (23) and the piston cylinder (22) respectively.

4. A low-pressure outer mold for an automobile flywheel as claimed in claim 2, characterized in that: The branch pipe (25) is composed of three rubber pipes as a whole, and the branch pipe (25) is initially in an open state, the check valve (29) is initially in a closed state, and the storage tube (210) is entirely made of a transparent material.

5. The low-pressure outer mold for an automobile flywheel as claimed in claim 1, characterized in that: The wear warning mechanism (3) comprises a fixed rod (31) symmetrically fixedly connected to the lower surface of the lower mold (15); the end of the fixed rod (31) away from the lower mold (15) is rotatably connected to a roller (32); the end of the roller (32) away from the fixed rod (31) is installed with an axle slider (33); the axle slider (33) is slidably connected to the front side wall of the workbench (1); the end of the axle slider (33) away from the roller (32) is fixedly connected to a nut sleeve (34); the inner wall of the nut sleeve (34) is threadedly connected to a screw rod (35); the screw rod (35) is rotatably connected to the front side wall of the workbench (1); the end of the screw rod (35) away from the workbench (1) is fixedly connected to a control switch (36); and the side of the control switch (36) away from the screw rod (35) is rotatably connected to a warning light (37).

6. A low-pressure outer mold for an automobile flywheel as claimed in claim 5, characterized in that: A slide groove is provided at a position of the inclined surface block in the shaft slider (33) corresponding to the roller (32), and the shaft slider (33) and the roller (32) are slidably connected via the slide groove.

7. The low-pressure outer mold for an automobile flywheel as claimed in claim 5, characterized in that: A ball screw structure is formed between the nut sleeve (34) and the screw rod (35), and the warning light (37) is initially in an off state.

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