Gravity casting die-casting die for automobile pump cover

Abstract

The utility model discloses a gravity casting die-casting die of an automobile pump cover, which relates to the technical field of automobile pump cover production, and comprises a support frame, the top of the support frame is fixedly connected with a mounting frame, the bottom of the mounting frame is provided with an ejection piece, the top of the mounting frame is provided with a hydraulic cylinder, and the inner side of the mounting frame is provided with a die assembly. The extrusion block is driven by the threaded rod to move downwards, the extrusion block is limited by the movable rod to move downwards stably until the upper die base or the lower die base is locked by applying pressure, and the movable rod ensures accurate positioning and stable resetting of the extrusion block under the action of the spring. The inserting rod completes primary positioning through inserting operation, provides precise supporting and avoids deviation or looseness of the die holder, the whole process guarantees stable installation of the die holder and reliability in long-term use through precise matching and pressure application, and the die assembly can be conveniently started to be disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile pump cover production, especially relates to a gravity casting die casting die of automobile pump cover. BACKGROUND

[0002] Pressure casting after casting is a method of combining two forming processes. Casting is to inject liquid metal into the mold cavity through gravity or low pressure, etc. to preliminarily form the shape of the casting. Pressure casting is to further shape the metal in the mold by using higher pressure on the basis of casting to obtain more accurate size and better surface quality. In the machining of automobile pump cover, the strength and sealing performance of the pump cover are effectively improved, so as to better meet the high performance requirements of automobile engine system on the pump cover.

[0003] However, in the prior art, the mold needs to withstand the injection of high-temperature metal liquid during pressure casting, and then be cooled by the cooling system. Such frequent heat exchange will generate thermal stress inside the mold, and the cooling system cools the mold quickly. The repeated thermal cycle will cause thermal fatigue cracks on the surface of the mold. In order to facilitate the demolding of the casting, a release agent is used. However, some release agents contain chemical components. If the release agent is not properly selected or not cleaned in time after use, these chemical components will corrode the mold. Therefore, the mold needs to be repaired or replaced regularly. If the mold is extremely cumbersome to disassemble, it will seriously affect the production efficiency of the automobile pump cover. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems of thermal stress and the inconvenience of disassembling and replacing the mold after the release agent damages the mold in the prior art, and provides a gravity casting die casting die for automobile pump cover.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gravity casting die casting die for automobile pump cover, comprising a support frame, the top of the support frame is fixedly connected with a mounting frame, the bottom of the mounting frame is installed with an ejection element, and the top of the mounting frame is installed with a hydraulic cylinder, the inner side of the mounting frame is installed with a mold assembly, and the two sides of the mold assembly are installed with locking elements.

[0006] The locking element comprises a moving plate, the bottom of the moving plate is fixedly connected with a sliding block, the top of the moving plate is fixedly connected with a fixed block, the middle of the fixed block is threadedly connected with a threaded rod, the two sides of the fixed block are slidably connected with movable rods, the bottom end of the movable rod is fixedly connected with a pressing block, the bottom end of the threaded rod penetrates through the fixed block, and the bottom end of the threaded rod abuts against the top center of the pressing block, the inner side of the fixed block is provided with a spring, and the side wall of the moving plate is fixedly connected with a plug-in rod.

[0007] Preferably, the spring is sleeved on the outer surface of the movable rod, and the top of the movable rod is fixedly connected with a stop block.

[0008] Preferably, the mold assembly comprises an upper die holder and a lower die holder, the upper die holder is provided with a lifting plate at the top, and the lower die holder is located inside the mounting frame.

[0009] Preferably, the bottom of the upper die holder is fixedly connected with a second fixing frame, and the top of the lower die holder is fixedly connected with a first fixing frame.

[0010] Preferably, the inside of the first fixing frame is rotatably connected with a first transmission rod, and the inside of the second fixing frame is rotatably connected with a second transmission rod.

[0011] Preferably, the top end of the first transmission rod is fixedly connected with a connecting frame, and the inside of the connecting frame is rotatably connected with the bottom end of the second transmission rod.

[0012] Preferably, the lifting plate is slidably connected with the mounting frame, and the top of the lifting plate is fixedly connected with the bottom end of the hydraulic cylinder.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that:

[0014] 1、In the utility model, the extrusion block is driven to move downwards by the threaded rod, the extrusion block is stably moved downwards by the limitation of the movable rod, until the pressure is applied to lock the upper die holder or the lower die holder, the movable rod is under the action of the spring, the accurate positioning and stable reset of the extrusion block are ensured, the plug-in rod completes the preliminary positioning by plug-in operation, accurate support is provided, the die holder is prevented from deviating or loosening, the stable installation of the die holder and the reliability in long-term use are ensured through the precise cooperation and pressure application, and the mold assembly is convenient to start disassembling.

[0015] 2、In the utility model, the accurate die closing of the upper die holder and the lower die holder is realized through the cooperation of the first transmission rod and the second transmission rod, the stability of the casting quality is ensured, the transmission mechanism that rotates synchronously accurately transmits the movement through the connecting frame, the die butt joint process is ensured without deviation, misplacement is avoided, and the cooperation precision of the die is improved, the pressing action of the upper die holder not only ensures the perfect forming of the casting mold, but also presses the material through high pressure, air bubbles and defects are reduced, the compactness and overall quality of the pump cover are significantly improved, the final quality of the casting is significantly improved through the efficient and accurate die coordination, and the high stability and reliability in the production process are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 An overall three-dimensional structure schematic view of the gravity casting die casting mold of the automobile pump cover is provided for the utility model;

[0017] Figure 2 A partial three-dimensional structure schematic view of the gravity casting die casting mold of the automobile pump cover is provided for the utility model;

[0018] Figure 3 This utility model provides a three-dimensional structural diagram of a locking component in a gravity casting die-casting mold for an automobile pump cover.

[0019] Figure 4 This utility model presents a partial three-dimensional structural diagram of the mold components in a gravity casting die-casting mold for an automobile pump cover.

[0020] Legend: 1. Support frame; 2. Mounting frame; 3. Ejector; 4. Hydraulic cylinder; 5. Lifting plate; 6. Mold assembly; 61. First transmission rod; 62. First fixed frame; 63. Connecting frame; 64. Second transmission rod; 65. Second fixed frame; 66. Upper mold base; 67. Lower mold base; 7. Locking component; 71. Moving plate; 72. Insert rod; 73. Fixed block; 74. Threaded rod; 75. Extrusion block; 76. Movable rod; 77. Spring; 78. Stop block; 79. Slider. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 - Figure 3 As shown, this utility model provides a gravity casting die-casting mold for an automobile pump cover, including a support frame 1, a mounting frame 2 fixedly connected to the top of the support frame 1, an ejector 3 installed at the bottom of the mounting frame 2, a hydraulic cylinder 4 installed at the top of the mounting frame 2, a mold assembly 6 installed inside the mounting frame 2, and locking parts 7 installed on both sides of the mold assembly 6.

[0024] The locking component 7 includes a movable plate 71, a slider 79 fixedly connected to the bottom of the movable plate 71, and a fixed block 73 fixedly connected to the top of the movable plate 71. A threaded rod 74 is threadedly connected to the middle of the fixed block 73, and movable rods 76 are slidably connected to both sides of the fixed block 73. A pressing block 75 is fixedly connected to the bottom of the movable rod 76. The bottom end of the threaded rod 74 passes through the fixed block 73 and abuts against the center of the top of the pressing block 75. A spring 77 is provided inside the fixed block 73, and a plug-in rod 72 is fixedly connected to the side wall of the movable plate 71.

[0025] Spring 77 is sleeved on the outer surface of movable rod 76, and stop block 78 is fixedly connected to the top of movable rod 76.

[0026] Specifically, in the process of installing the mold assembly 6, it is necessary to first connect the upper mold base 66 and the lifting plate 5 to ensure the stability and precise fit between the lifting plate 5 and the upper mold base 66. At this time, the lower mold base 67 is installed at the bottom of the inner cavity of the mounting frame 2 to ensure its fixation in the appropriate position. In order to achieve a smooth installation process, the sliding block 79 is used to slideably connect the lifting plate 5 or the mounting frame 2.

[0027] In the process of installing the locking part 7, the rotating threaded rod 74 drives the extrusion block 75 to move downward. The design of the extrusion block 75 allows it to stably move downward along a specific track under the restriction of the movable rod 76 until it comes into contact with the upper mold base 66 or the lower mold base 67 and exerts pressure for locking. With the downward movement of the extrusion block 75, it ensures the precise positioning of the mold base by exerting stable extrusion force on the upper mold base 66 or the lower mold base 67.

[0028] Due to the movable space of the movable rod 76 and the spring 77 structure on its surface, the movable rod 76 can stably guide the extrusion block 75 for precise positioning under the push of the extrusion block 75. When the threaded rod 74 rotates, the extrusion block 75 can move downward smoothly under the restriction of the spring 77, and the spring 77 plays a role in the disassembly process to ensure that the extrusion block 75 can be reset to avoid jamming or damage due to long-term use.

[0029] In addition, the insertion rod 72 of the moving plate 71 plays an important auxiliary role in locking the upper mold base 66 or the lower mold base 67. Through insertion, the insertion rod 72 can complete the preliminary positioning and provide support for subsequent positioning operations. The design of the insertion rod 72 makes the locking process more precise and provides stable support during positioning to ensure that the installation of the mold base does not shift or loosen during the entire operation process.

[0030] Embodiment Two: Figure 2 and Figure 4 As shown in the drawings, the mold assembly 6 includes an upper mold base 66 and a lower mold base 67. The upper mold base 66 is provided with a lifting plate 5 at the top, and the lower mold base 67 is located inside the mounting frame 2. The bottom of the upper mold base 66 is fixedly connected with a second fixing frame 65, and the top of the lower mold base 67 is fixedly connected with a first fixing frame 62. The first fixing frame 62 is rotatably connected with a first transmission rod 61 inside, and the second fixing frame 65 is rotatably connected with a second transmission rod 64 inside. The top end of the first transmission rod 61 is fixedly connected with a connecting frame 63, and the connecting frame 63 is rotatably connected with the bottom end of the second transmission rod 64 inside. The lifting plate 5 is slideably connected with the mounting frame 2, and the top of the lifting plate 5 is fixedly connected with the bottom end of the hydraulic cylinder 4.

[0031] The effect achieved by the whole embodiment is that during the downward movement of the lifting plate 5, the downward movement of the lifting plate 5 not only moves the upper die holder 66 downward, but also cooperates with the precisely designed mechanism to ensure the efficient operation of the whole mold system. When the lifting plate 5 moves downward, the second fixed frame 65 and the first fixed frame 62 connected thereto play a key role through the matched transmission mechanism of the second transmission rod 64 and the first transmission rod 61. The rotation of the two transmission rods is transmitted through the connecting frame 63, realizing the synchronous rotation of the first transmission rod 61 and the second transmission rod 64, and ensuring the precision and coordination of the mold movement.

[0032] The synchronous rotation mechanism ensures that the docking process of the mold is very precise when the upper die holder 66 and the lower die holder 67 perform the mold closing operation. The movement of the upper die holder 66 not only tightly docks the lower die holder 67, but also accurately positions through the precise guide device, ensuring the perfect fit of the mold during the casting process and avoiding any deviation or misalignment, which is crucial for the quality of the castings.

[0033] At the beginning of the casting operation, the raw material is first poured into the cavity of the upper die holder 66 to form the basis of the casting mold. As the upper die holder 66 is further pressed down, the material is pressed into shape, thus completing the die casting process of the pump cover. The pressing action of the upper die holder 66 not only helps to form the precise mold shape, but also ensures the density of the casting through high pressure, reducing the generation of bubbles and defects and significantly improving the finished product quality of the pump cover.

[0034] The method of using the device and the working principle are as follows: when installing the mold assembly 6, the upper die holder 66 is connected with the lifting plate 5, and the lower die holder 67 is installed at the bottom end of the inner cavity of the mounting frame 2. During installation, the sliding block 79 is connected with the lifting plate 5 or the mounting frame 2 in a sliding manner to facilitate the installation of the locking member 7. When locking, when the threaded rod 74 rotates, it can push the extrusion block 75 to move downward, and then the extrusion block 75 will continue to move downward under the limitation of the movable rod 76. As the extrusion block 75 moves downward, it will lock the upper die holder 66 or the lower die holder 67, thus completing the installation of the mold assembly 6. Since the movable rod 76 has a moving space in the fixed block 73 and is limited by the surface spring 77, the extrusion block 75 can stably extrude and position the upper die holder 66 or the lower die holder 67 when it is pushed by the threaded rod 74, and the spring 77 can reset the extrusion block 75 when it is disassembled.

[0035] When locking the upper die holder 66 or the lower die holder 67, the plug-in rod 72 of the moving plate 71 can be plugged in for positioning, which can not only complete the preliminary positioning, but also play a stable role in subsequent positioning.

[0036] When the lifting plate 5 moves downward, the upper die holder 66 moves downward, and the second transmission rod 64 and the first transmission rod 61 are rotated by the second fixing frame 65 and the first fixing frame 62, and then the first transmission rod 61 and the second transmission rod 64 are synchronously rotated by the connecting frame 63, and the upper die holder 66 and the lower die holder 67 are guided to be closed. When casting, the material is poured into the cavity of the upper die holder 66, and then the upper die holder 66 is used for die casting, so that the quality of the pump cover manufacturing can be improved.

[0037] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields. However, any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A gravity casting die for a pump cover of an automobile, comprising a support frame (1), a mounting frame (2) is fixedly connected to the top of the support frame (1), an ejection member (3) is mounted at the bottom of the mounting frame (2), and a hydraulic cylinder (4) is mounted at the top of the mounting frame (2), characterized in that: The inside of the mounting frame (2) is mounted with a mold assembly (6), both sides of the mold assembly (6) are mounted with a locking piece (7); The locking piece (7) comprises a moving plate (71), the bottom of the moving plate (71) is fixedly connected with a sliding block (79), and the top of the moving plate (71) is fixedly connected with a fixed block (73), the middle of the fixed block (73) is threadedly connected with a threaded rod (74), and both sides of the fixed block (73) are slidably connected with a movable rod (76), the bottom end of the movable rod (76) is fixedly connected with a extrusion block (75), the bottom end of the threaded rod (74) penetrates through the fixed block (73), and the bottom end of the threaded rod (74) abuts against the top central of the extrusion block (75), the inside of the fixed block (73) is provided with a spring (77), and the side wall of the moving plate (71) is fixedly connected with a plug-in rod (72).

2. A gravity casting die for an automotive pump cover according to claim 1, characterized in that: The spring (77) is sleeved on the outer surface of the movable rod (76), and the top of the movable rod (76) is fixedly connected with a stop block (78).

3. A gravity casting die for an automotive pump cover as set forth in claim 1, wherein: The mold assembly (6) comprises an upper die seat (66) and a lower die seat (67), the top of the upper die seat (66) is provided with a lifting plate (5), and the lower die seat (67) is located inside the mounting frame (2).

4. A gravity casting die for casting an automotive pump cover as set forth in claim 3, wherein: The bottom of the upper die seat (66) is fixedly connected with a second fixed frame (65), and the top of the lower die seat (67) is fixedly connected with a first fixed frame (62).

5. A gravity casting die for casting an automotive pump cover as defined in claim 4, wherein: The inside of the first fixed frame (62) is rotatably connected with a first transmission rod (61), and the inside of the second fixed frame (65) is rotatably connected with a second transmission rod (64).

6. A gravity casting die for casting an automotive pump cover as set forth in claim 5, wherein: The top end of the first transmission rod (61) is fixedly connected with a connecting frame (63), and the inside of the connecting frame (63) is rotatably connected with the bottom end of the second transmission rod (64).

7. A gravity casting die for casting an automotive pump cover as defined in claim 6, wherein: The lifting plate (5) is slidably connected with the mounting frame (2), and the top of the lifting plate (5) is fixedly connected with the bottom end of the hydraulic cylinder (4).

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