Process and device for die casting the lower cylinder block of an engine

Abstract

The application relates to the technical field of die-casting devices, and specifically provides an engine lower cylinder body die-casting device which comprises a base, a support is fixedly installed on the upper surface of one end of the base, an upper pressing assembly is arranged outside the support, bottom plates are fixedly installed on the outer walls of the two sides of the base, vertical frames are fixedly installed on the outer sides of the ends, away from each other, of the two bottom plates, sliding grooves are arranged on the inner sides of the vertical frames, sliding sleeves are connected to the upper sides of the inner sides of the vertical frames through arranged lifting assemblies, polishing assemblies are slidingly installed on the inner sides of the sliding sleeves, and a lower die seat is fixedly installed on the upper surface of the base. The polishing assemblies arranged on the two sides of the base can be flexibly rotated and telescoped to polish the lower cylinder body forming die body, so that the product quality is improved, and the work efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of die casting devices, and particularly provides an engine lower cylinder body die casting process and a die casting device. BACKGROUND

[0002] The cylinder body is an important part used for an engine, and therefore the cylinder body material used for preparing the cylinder body should have sufficient strength, good castability and cutting property. Commonly used cylinder body materials are cast iron and alloy cast iron.

[0003] When the engine lower cylinder body is cast, the outer surface of the die is pressed and ejected during the casting process, and there are excess residual burrs and other substances, which need to be manually polished. This operation mode is not conducive to industrial use and is low in efficiency. Therefore, the above problems need to be improved. SUMMARY

[0004] The application aims to solve the problems in the background art and provides an engine lower cylinder body die casting process and a die casting device.

[0005] To achieve the above purpose, the application provides an engine lower cylinder body die casting device, which comprises a base, a support fixedly installed on the upper surface of one end of the base, an upper pressing assembly arranged on the outer side of the support, bottom plates fixedly installed on the outer walls of both sides of the base, vertical supports fixedly installed on the outer sides of the ends of the two bottom plates away from each other, sliding grooves formed on the inner sides of the vertical supports, sliding sleeves connected to the vertical supports through the setting of lifting assemblies on the inner sides of the upper ends of the vertical supports, polishing assemblies slidingly installed on the inner sides of the sliding sleeves, and a lower die holder fixedly installed on the upper surface of the base.

[0006] Preferably, the upper pressing assembly comprises a first hydraulic cylinder fixedly installed on the outer wall of one side of the support, a fixed rod fixedly installed on the telescopic end of the first hydraulic cylinder, guide rods slidingly installed on the inner sides of the two ends of the fixed rod, a support rod fixedly installed on the outer side of the upper end of the first hydraulic cylinder, and an upper die holder fixedly installed on the bottom of the fixed rod.

[0007] Preferably, the lifting assembly comprises a second hydraulic cylinder fixedly installed on the upper end of the inner side of the vertical support.

[0008] Preferably, the polishing assembly comprises a sliding frame slidingly installed on the inner side of the sliding sleeve, a plurality of clamping holes formed on the upper surface of the sliding frame, a mounting seat extended downward from the outer side of one end of the sliding frame, a rack connected to the outer side of the mounting seat through the setting of a mounting piece, a clamping pin movably inserted into the inner side of one of the clamping holes.

[0009] Preferably, the mounting piece comprises a third hydraulic cylinder fixedly mounted at the bottom of the mounting seat, and a clamping seat fixedly mounted at the telescopic end of the third hydraulic cylinder, and the rack is fixedly clamped on the inner side of the clamping seat.

[0010] Preferably, the outer walls on both sides of the mounting seat are provided with frame rods correspondingly mounted through the fixedly mounted connecting rods, and a rotating shaft is rotatably mounted between the two frame rods, and a connecting seat is fixedly sleeved on the outer side of the rotating shaft, and a grinding piece is arranged in the inner side of one end of the connecting seat.

[0011] Preferably, the grinding piece comprises a motor fixedly mounted on the upper surface of one end of the connecting seat, and a grinding wheel connected to the output end of the motor and penetrating through the inner side of the connecting seat, and an arc gear fixedly mounted on the inner side of the end of the connecting seat away from the motor, and the arc gear is in meshing engagement with the rack.

[0012] Preferably, the side edges of the two bottom plates are fixedly provided with support seats, and the upper surfaces of the two groups of support seats are fixedly provided with air pumps, and the air pumps are connected with bend pipes through the internally communicated connecting pipes.

[0013] The engine lower cylinder body is cast by the die casting device, and the process comprises the following steps:

[0014] S1: The mold core of the lower cylinder body is made of sand core, and then the cylinder mold is divided into two parts for die casting;

[0015] S2: The upper mold seat is driven by the first hydraulic cylinder to extrude the corresponding lower mold seat, and then the sand core is die cast;

[0016] S3: After forming, the worker drives the formed lower cylinder body in the lower mold seat by a tool, and then the slide rail is slid above the formed lower cylinder body, and the height of the slide rail can be adjusted according to the height of the motor and the grinding wheel 20, so as to ensure that the motor and the grinding wheel 20 can be close to the surface of the formed lower cylinder body for grinding;

[0017] S4: Under the drive of the third hydraulic cylinder, the corresponding clamping seat drives the internal rack to move upwards to mesh with the arc gear at one end, so that the arc gear can be adjusted to rotate, so that the edge of the grinding wheel can be turned and inclined, thereby grinding some grooves, and the processing progress of the formed lower cylinder body in the later stage can be greatly improved:

[0018] S5: The worker takes out the formed lower cylinder body, and then the later heat treatment process is facilitated, the air pump is opened, the bend pipe is manually bent, the air flow in the bend pipe is directed to the inside of the lower mold seat, the dust and debris in the inside of the lower mold seat are sprayed, and the die casting in the later stage is facilitated.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] By setting the base on both sides of the bottom plate and vertical frame, the use of the slide can be adjusted, so that the slide can cooperate with the subsequent operation to drive the polishing wheel on one side to polish the formed sand core, and remove the excess burr and other substances;

[0021] By setting the third hydraulic cylinder and rack, the polishing wheel can be fine-tuned after the position is fixed, so that the polishing angle can meet the shape of the lower cylinder body after forming, and some uneven positions can be polished around, thereby ensuring the quality of the lower cylinder body after forming. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 It is another angle structure schematic diagram of the present application;

[0024] Figure 3 It is a schematic diagram of the connection between the slide and the mounting seat of the present application;

[0025] Figure 4 It is a schematic diagram of the connection between the polishing member and the arc gear of the present application;

[0026] Figure 5 It is a schematic diagram of the connection structure between the slide and the rack of the present application;

[0027] Figure 6 It is a schematic diagram of the communication between the air pump and the elbow of the present application.

[0028] In the figure: 1, base; 2, support; 3, fixed rod; 4, first hydraulic cylinder; 5, guide rod; 6, upper die holder; 7, second hydraulic cylinder; 8, sliding groove; 9, support; 10, vertical frame; 11, slide; 12, bottom plate; 13, lower die holder; 14, clamping hole; 15, sliding sleeve; 16, clamping pin; 17, mounting seat; 18, motor; 19, connecting seat; 20, polishing wheel; 21, frame rod; 22, arc gear; 23, connecting rod; 24, rack; 25, connecting pipe; 26, air pump; 27, elbow; 28, clamping seat; 29, rotating shaft; 30, third hydraulic cylinder. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0030] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] AsFigures 1-6 The engine lower cylinder block die-casting device shown, including the base 1, the upper surface of one end of the base 1 is fixedly installed with a support 2, the outer side of the support 2 is provided with an upper pressing assembly, the outer walls on both sides of the base 1 are both fixedly installed with a bottom plate 12, the outer sides of the ends of the two bottom plates 12 away from each other are both fixedly installed with a vertical support 10, the inner sides of the vertical supports 10 are both provided with a sliding groove 8, the inner sides of the upper parts of the vertical supports 10 are both connected with a sliding sleeve 15 through a lifting assembly provided correspondingly, the inner sides of the sliding sleeves 15 are both slidably installed with a polishing assembly, and the upper surface of the base 1 is fixedly installed with a lower mold base 13.

[0032] The upper pressing assembly comprises a first hydraulic cylinder 4 fixedly installed on the outer wall of one side of the support 2, a fixed rod 3 fixedly installed at the telescopic end of the first hydraulic cylinder 4, guide rods 5 slidably installed at the inner sides of the two ends of the fixed rod 3, and a support rod fixedly installed at the outer side of the upper part of the first hydraulic cylinder 4, under the drive of the first hydraulic cylinder 4, the fixed rod 3 and the guide rods 5 at the corresponding positions can drive the upper mold base 6 at the lower end to lift, so as to perform a die-casting action, one end of each of the two guide rods 5 extends to the outer side of the upper part of the support rod, and the upper mold base 6 is fixedly installed at the bottom of the fixed rod 3.

[0033] The lifting assembly comprises second hydraulic cylinders 7 fixedly installed at the inner sides of the upper parts of the vertical supports 10, and the telescopic ends of the second hydraulic cylinders 7 are fixedly connected with the outer sides of the sliding sleeves 15, so that the second hydraulic cylinders 7 can drive the sliding sleeves 15 to move up and down.

[0034] The polishing assembly comprises sliding supports 11 slidably installed at the inner sides of the sliding sleeves 15, the sliding supports 11 slide at the inner sides of the sliding sleeves 15 and can be used to simultaneously lift up and down with the sliding sleeves 15, a plurality of clamping holes 14 are formed in the upper surface of the sliding support 11, a mounting seat 17 extends downward from the outer side of one end of the sliding support 11, a rack 24 is connected with the outer side of the mounting seat 17 through a mounting piece provided, a clamping pin 16 is movably inserted into the inner side of one end of the sliding sleeve 15, and the clamping pin 16 is inserted into the inner side of one of the clamping holes 14, so that the position of the sliding support 11 can be fixed after the sliding support 11 moves transversely through the clamping pin 16.

[0035] The mounting piece comprises third hydraulic cylinders 30 fixedly installed at the bottoms of the mounting seats 17, clamping seats 28 fixedly installed at the telescopic ends of the third hydraulic cylinders 30, and the rack 24 is fixedly clamped at the inner side of the clamping seat 28, so that the clamping seat 28 can facilitate the assembly of the rack 24 into the interior, and the rack 24 can be used to reciprocate up and down under the synchronous lifting of the third hydraulic cylinders 30.

[0036] The outer walls on both sides of the mounting seat 17 are provided with frame rods 21 through the fixed connecting rods 23, two frame rods 21 are rotatably connected between the connecting rods 23 and the frame rods 21, and the rotating shaft 29 can be installed outside the mounting seat 17 for erection under the connection of the connecting rods 23 and the frame rods 21. The connecting seat 19 is fixedly sleeved outside the rotating shaft 29, the grinding part is arranged in one end of the connecting seat 19, the grinding part comprises a motor 18 fixedly installed on the upper surface of one end of the connecting seat 19, the motor 18 is connected with a grinding wheel 20 penetrating through the inner side of the connecting seat 19 and the end portion, the connecting seat 19, the motor 18 and the grinding wheel 20 can be inclined and rotated as needed under the rotating connection of the rotating shaft 29, the arc gear 22 is fixedly installed on the inner side of the end of the connecting seat 19 away from the motor 18, the arc gear 22 is meshed with the rack 24, and the rack 24 can drive the corresponding arc gear 22 to mesh during up-down driving. The arc gear 22 drives the connecting seat 19 to rotate, so that the grinding wheel 20 can be used to grind the position that is not flat.

[0037] The side edges of the two bottom plates 12 are fixedly provided with the supports 9, the upper surfaces of the two groups of supports 9 are fixedly provided with air pumps 26, the air pumps 26 are connected with the elbow pipes 27 through the connecting pipes 25 in communication, and the air pumps 26 are connected with the elbow pipes 27 through the connecting pipes 25 in communication.

[0038] The engine lower cylinder body die casting process is used by using the die casting device, and the process comprises the following steps:

[0039] S1: The mold core of the lower cylinder body is made of sand core, and then the cylinder mold is divided into two parts for die casting;

[0040] S2: The upper mold seat 6 is driven by the first hydraulic cylinder 4 to extrude the corresponding lower mold seat 13, and then the sand core is die cast;

[0041] S3: After forming, the worker drives the formed lower cylinder body in the lower mold seat 13 through a tool, then the carriage 11 is slid to the upper side of the formed lower cylinder body, and the height of the carriage 11 can be adjusted by the corresponding second hydraulic cylinder 7 according to the use height, so that the motor 18 and the grinding wheel 20 can be close to the surface of the formed lower cylinder body for grinding;

[0042] S4: Under the driving of the third hydraulic cylinder 29, the corresponding clamping seat 28 drives the internal rack 24 to move upwards to mesh with the arc gear 22 at one end, so that the arc gear 22 can be rotated and adjusted, so that the edge of the grinding wheel 20 can be turned and inclined, thereby grinding some ditches. By this way, the processing progress of the formed lower cylinder body can be greatly improved:

[0043] S5: the worker takes out the lower cylinder body after the forming treatment, and then facilitates the later heat treatment process, opens the air pump 26, manually bends the elbow pipe 27, makes the airflow inside the lower mold base 13, sprays the internal dust and waste, and facilitates the later die casting.

[0044] Working principle: in use, first put the original sand core into the lower mold base 13, then drive the first hydraulic cylinder 4 to drive the upper mold base 6 to move down, and press the sand core in the lower mold base 13, after forming, the worker can push the corresponding position of the sliding frame 11 to the upper side of the formed lower cylinder body in the lower mold base 13, then adjust the corresponding first hydraulic cylinder 4 and third hydraulic cylinder 30 respectively to polish the polishing wheel 20 at the corresponding position to polish, the third hydraulic cylinder 30 can be engaged with the arc gear 22 through the outside lifting reciprocating rack 24, so that the arc gear 22 can drive the connecting seat 19, motor 18 and polishing wheel 20 on one side to tilt, thereby polishing the uneven position of the formed lower cylinder body surface.

[0045] The above shows and 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 to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An engine lower cylinder block die-casting device, characterized in that: The base (1) includes a base (1), a bracket (2) is fixedly installed on the upper surface of one end of the base (1), an upper pressing component is provided on the outer side of the bracket (2), a base plate (12) is fixedly installed on both outer walls of the base (1), a vertical frame (10) is fixedly installed on the outer side of the two base plates (12) that are far apart from each other, a sliding groove (8) is provided on the inner side of the vertical frame (10), a sliding sleeve (15) is connected to the upper side of the inner side of the vertical frame (10) through a lifting component, a grinding component is slidably installed on the inner side of the sliding sleeve (15), and a lower mold base (13) is fixedly installed on the upper surface of the base (1). The grinding assembly includes a slide (11) that is slidably mounted inside the slide sleeve (15). The upper surface of the slide (11) has multiple sets of locking holes (14). A mounting seat (17) extends downward from one side of the slide (11). A rack (24) is connected to the outside of the mounting seat (17) through a mounting component. A locking pin (16) is movably inserted into the inner side of one side of the slide sleeve (15). The locking pin (16) is inserted into one set of locking holes (14). The mounting components include a third hydraulic cylinder (30) which is fixedly installed at the bottom of the mounting base (17). The telescopic end of the third hydraulic cylinder (30) is fixedly installed with a retainer (28), and the rack (24) is fixedly clamped inside the retainer (28). The mounting base (17) has a bracket (21) installed on both sides of the outer wall via a fixed connecting rod (23). A rotating shaft (29) is installed between the two brackets (21). A connecting seat (19) is fixedly sleeved on the outside of the rotating shaft (29). A grinding part is provided inside one end of the connecting seat (19). The grinding component includes a motor (18) that is fixedly installed on the upper surface of one end of the connecting seat (19). The output end of the motor (18) passes through the inner side of the connecting seat (19) and is connected to a grinding wheel (20). An arc gear (22) is fixedly installed on the inner side of the end of the connecting seat (19) away from the motor (18). The arc gear (22) meshes with the rack (24).

2. The engine lower cylinder block die-casting device according to claim 1, characterized in that: The upper pressure assembly includes a first hydraulic cylinder (4) fixedly mounted on the outer wall of one side of the mounting bracket (2). A fixed rod (3) is fixedly mounted on the telescopic end of the first hydraulic cylinder (4). Guide rods (5) are slidably mounted on the inner sides of both ends of the fixed rod (3). A support rod is fixedly mounted on the upper side of the first hydraulic cylinder (4). One end of each of the two guide rods (5) extends to the upper side of the support rod. An upper mold base (6) is fixedly mounted on the bottom of the fixed rod (3).

3. The engine lower cylinder block die-casting device according to claim 2, characterized in that: The lifting assembly includes a second hydraulic cylinder (7) that is fixedly installed on the upper inner side of the vertical frame (10), and the telescopic end of the second hydraulic cylinder (7) is fixedly connected to the outer side of the sliding sleeve (15).

4. The engine lower cylinder block die-casting device according to claim 3, characterized in that: Each of the two base plates (12) has a support (9) fixedly installed on one side edge. Each of the two sets of supports (9) has an air pump (26) fixedly installed on its upper surface. Each air pump (26) is connected to a bend (27) through an internal connecting pipe (25). The bend (27) is a telescopic pipe.

5. The die-casting process for the lower cylinder block of an engine, characterized by: The use of the die-casting apparatus according to claim 4 includes the following processes: S1: The core of the lower cylinder block is made of sand core, and then the cylinder block mold is divided into two parts for die casting. S2: The upper mold base (6) is driven by the first hydraulic cylinder (4) to press against the corresponding lower mold base (13) and then die-cast the sand core; S3: After molding, the worker moves the molding lower cylinder inside the lower mold base (13) with a tool, and then slides the slide (11) above the molding lower cylinder. The corresponding second hydraulic cylinder (7) can adjust the height of the slide (11) according to the height of use, so as to ensure that the motor (18) and the grinding wheel (20) can get close to the surface of the molding lower cylinder for grinding. S4: Driven by the third hydraulic cylinder (30), the corresponding chuck (28) will drive the internal rack (24) to move upward so as to mesh with the arc gear (22) at one end, thereby allowing the arc gear (22) to rotate and adjust, so that the edge of the grinding wheel (20) can be flipped and tilted, thereby grinding some grooves. In this way, the processing progress of the lower cylinder body in the later stage can be greatly improved. S5: The worker takes out the lower cylinder after molding and then turns on the air pump (26) and manually bends the pipe (27) to spray the airflow into the lower mold base (13) to remove the dust and waste inside, which is convenient for the later die casting.

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