Shakeout machine with screen convenient to replace

Abstract

The utility model relates to the technical field of mechanical casting, in particular to a shakeout machine with a screen convenient to replace, the inner wall of the machine body is fixedly connected with a plurality of second hydraulic cylinders, and the telescopic ends of the second hydraulic cylinders are fixedly connected with knocking blocks. According to the molding sand shakeout machine, the push rod slides along the through hole machined in the second shell, so that when molding sand of other sizes needs to be screened, screening can be conducted, an operator does not need to replace the molding sand shakeout machine to another matched shakeout machine for machining, and therefore the working limitation is reduced; the lifting rod is in sliding connection along the through hole machined in the first shell, so that when the height of an operator is high or low, the operator can still operate conveniently, the working state of the operator cannot be affected, the situation that the action of the operator is slow is avoided, and then the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical casting, in particular to a sand-falling machine which is convenient for replacing a screen. Background Art

[0002] The foundry industry is the foundation of pillar industries such as automobiles, petrochemicals, steel, and equipment manufacturing. The increasingly improved level of mechanization has led to a significant increase in the output of castings in my country. Dust control in the foundry workshop is a basic environmental protection requirement in the production process, especially in the sand-falling process, where a sand-falling machine is required to separate the castings from the molding sand and the sand box.

[0003] For example, a sand-falling machine with the application publication number "CN116140594A" sets a dust hood above the grille plate of the sand-falling machine, and the exhaust system and thermal fan are in operation to form airflow and negative pressure by suction, and remove the dust at the grille plate, thereby saving energy, reducing the dust content in the sand-falling operation environment, and protecting the health of operators and the environment. However, the sand-falling machine uses the grille plate to screen the molding sand. Since the grille plate is fixed on the surface of the frame, it can only screen the molding sand of a fixed type. When it is necessary to screen molding sand of other sizes, it cannot be screened, and the operator needs to be replaced by other compatible sand-falling machines for processing, which increases the working limitations. At the same time, the sand-falling machine cannot be adjusted because the height of the base is fixed. When the operator is taller or shorter, it is inconvenient for the operator to operate, which affects the operator's working state, causing the operator to move slowly, thereby reducing work efficiency. Utility Model Content

[0004] The utility model aims to solve the problem that the molding sand can be screened by the grid plate, because the grid plate is fixed on the surface of the frame, only the molding sand of the fixed type can be screened. When the molding sand of other sizes needs to be screened, the screening cannot be carried out, and the operator needs to be replaced to other compatible sand-falling machines for processing, which increases the working limitations. At the same time, the sand-falling machine cannot be adjusted because the height of the base is fixed. When the operator is taller or shorter, it is inconvenient for the operator to operate, which affects the working state of the operator, causes the operator to move slowly, and further reduces the working efficiency. A sand-falling machine with easy replacement of the screen is proposed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sand-falling machine which is convenient for replacing screens is designed, comprising a bottom plate and a machine body, wherein a lifting mechanism is symmetrically arranged on the surface of the bottom plate, a plurality of auxiliary screen-changing mechanisms are arranged inside the machine body, a plurality of first hydraulic cylinders are arranged on the inner wall of the machine body, a vacuum cleaner is fixedly connected to the telescopic end of the first hydraulic cylinder, the vacuum cleaner is slidably engaged with a slide groove processed on the inner wall of the machine body, a plurality of second hydraulic cylinders are fixedly connected to the inner wall of the machine body, and a knocking block is fixedly connected to the telescopic end of the second hydraulic cylinder.

[0007] Preferably, a slide groove processed on the inner wall of the body is slidably connected to the filter screen, and an opening and closing plate is hinged on the surface of the body.

[0008] Preferably, the lifting mechanism includes a first shell, a third hydraulic cylinder is fixedly connected to the inner wall of the first shell, a sliding rod is fixedly connected to the telescopic end of the third hydraulic cylinder, the sliding rod is slidably connected to a sliding groove processed on a protruding portion of the inner wall of the first shell, the protruding portion of the sliding rod is slidably connected to a sliding groove processed on a roller, the roller is rotatably connected to the inner wall of the first shell through a pin, a threaded rod is fixedly connected to the surface of the roller, the threaded rod is rotatably connected to the first shell through a bearing, the threaded rod is movably connected to the slider, the slider is movably connected to the lifting rod through a pin, the sliding groove processed on the lifting rod is slidably connected to the surface of the fixed column, the end of the fixed column is fixedly connected to the inner wall of the first shell, the lifting rod passes through the first shell through a through hole, and the lifting rod is slidably connected to the first shell through the through hole.

[0009] Preferably, the end of the lifting rod is fixedly connected to the surface of the machine body, and the first shell surface is fixedly connected to the surface of the bottom plate.

[0010] Preferably, the auxiliary screen changing mechanism includes a second shell, the inner wall of the second shell is fixedly connected to a motor through a bracket, the end of the motor output shaft is fixedly connected to a worm, the worm is rotatably connected to the protruding part of the inner wall of the second shell through a bearing, the worm is meshed with a worm wheel, the worm wheel is rotatably connected to the inner wall of the second shell through a pin, a cam is fixedly connected to the surface of the worm wheel, the surface of the cam is fitted with the surface of a rocker rod, the rocker rod is movably connected to the inner wall of the second shell through a pin, the rocker rod is movably connected to a transmission rod through the pin, a slide groove processed on the transmission rod is slidably connected to the surface of the protruding part of the inner wall of the second shell, the protruding part of the surface of the transmission rod is fitted with the surface of a push rod, a spring is sleeved on the surface of the push rod, one end of the spring is fixedly connected to the surface of the protruding part of the push rod, and the other end of the spring is fixedly connected to the inner wall of the second shell through a bracket, the push rod passes through the second shell through the bracket and the through hole, and the push rod is slidably connected to the second shell through the bracket and the through hole.

[0011] Preferably, the push rod surface is in contact with the filter screen surface, and the second shell surface is fixedly connected to the inner wall of the machine body.

[0012] The utility model proposes a sand-falling machine which is convenient for replacing the screen, and has the beneficial effect that: through the cooperation of the push rod and the auxiliary screen-changing mechanism, the rotation of the motor output shaft drives the worm to rotate, thereby driving the worm wheel to rotate, the rotation of the worm wheel drives the cam to rotate, thereby driving the swing rod to swing, the swing of the swing rod drives the transmission rod to slide along the surface of the protruding part of the inner wall of the second shell, the transmission rod moves to compress or stretch the spring, so that the push rod slides along the through hole processed on the second shell, so that when it is necessary to screen molding sand of other sizes, screening can be carried out, and there is no need for the operator to switch to other compatible sand-falling machines for processing, thereby reducing the working limitations.

[0013] Through the cooperation of the lifting rod and the lifting mechanism, the telescopic end of the third hydraulic cylinder moves and drives the sliding rod to slide along the sliding groove processed on the protruding part of the inner wall of the first shell, and at the same time, the protruding part of the sliding rod slides along the sliding groove processed on the roller, thereby driving the roller to rotate. The rotation of the roller drives the threaded rod to rotate, thereby driving the sliding block to move. The movement of the sliding block drives the lifting rod to slide along the surface of the fixed column, so that the lifting rod is slidably connected along the through hole processed on the first shell, so that when the operator is taller or shorter, it is still convenient for the operator to operate, will not affect the operator's working state, will not cause the staff to move slower, and thus improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A front cross-sectional view of

[0016] Figure 3 for Figure 1 A front sectional view of the middle lifting mechanism;

[0017] Figure 4 for Figure 1 A partial top view;

[0018] Figure 5 for Figure 2 A top sectional view of the auxiliary screen changing mechanism;

[0019] Figure 6 for Figure 1 Bottom sectional view of the lifting mechanism in the middle.

[0020] In the figure: 1, bottom plate, 2, machine body, 3, auxiliary screen changing mechanism, 301, second shell, 302, motor, 303, worm, 304, worm wheel, 305, cam, 306, transmission rod, 307, rocker arm, 308, push rod, 309, spring, 4, first hydraulic cylinder, 5, vacuum cleaner, 6, filter screen, 7, second hydraulic cylinder, 8, lifting mechanism, 801, first shell, 802, third hydraulic cylinder, 803, slide rod, 804, roller, 805, threaded rod, 806, slide block, 807, lifting rod, 808, fixed column, 9, knocking block, 10, opening and closing plate. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Refer to the attached Figure 1-6 : In the present embodiment, a sand-falling machine which is convenient for replacing the screen comprises a bottom plate 1 and a machine body 2. A lifting mechanism 8 is symmetrically arranged on the surface of the bottom plate 1. A plurality of auxiliary screen-changing mechanisms 3 are arranged inside the machine body 2. A plurality of first hydraulic cylinders 4 are arranged on the inner wall of the machine body 2. The models of the first hydraulic cylinder 4, the second hydraulic cylinder 7, the Duosian hydraulic cylinder 802 and the motor 302 and the elastic coefficient of the spring 309 are selected according to actual needs to meet the working needs. A vacuum cleaner 5 is fixedly connected to the telescopic end of the first hydraulic cylinder 4. The vacuum cleaner 5 is slidably connected to the slide groove processed on the inner wall of the machine body 2. When the power of the first hydraulic cylinder 4 is turned on, the telescopic end of the first hydraulic cylinder 4 moves to drive the vacuum cleaner 5 Slide along the slide groove processed on the body 2, a plurality of second hydraulic cylinders 7 are fixedly connected to the inner wall of the body 2, a knocking block 9 is fixedly connected to the telescopic end of the second hydraulic cylinder 7, and the power of the second hydraulic cylinder 7 is turned on, and the telescopic end of the second hydraulic cylinder 7 moves to drive the knocking block 9 to move, the slide groove processed on the inner wall of the body 2 is slidably connected to the filter screen 6, an opening and closing plate 10 is hinged on the surface of the body 2, the end of the lifting rod 807 is fixedly connected to the surface of the body 2, and the movement of the lifting rod 807 drives the body 2 to move, the surface of the first shell 801 is fixedly connected to the surface of the bottom plate 1, the surface of the push rod 308 is in contact with the surface of the filter screen 6, and the surface of the second shell 301 is fixedly connected to the inner wall of the body 2.

[0023] Refer to the attached Figure 3 and attached Figure 6

[0024] The lifting mechanism 8 includes a first housing 801, the inner wall of the first housing 801 is fixedly connected with a third hydraulic cylinder 802, so that the first housing 801 and the third hydraulic cylinder 802 are fixed to each other, the telescopic end of the third hydraulic cylinder 802 is fixedly connected with a slide bar 803, the slide bar 803 is slidably connected with a slide groove processed on the protruding part of the inner wall of the first housing 801, the protruding part of the slide bar 803 is slidably connected with the slide groove processed on the roller 804, the roller 804 is rotatably connected with the inner wall of the first housing 801 through a pin, the surface of the roller 804 is fixedly connected with a threaded rod 805, and the threaded rod 805 is rotatably connected with the first housing 801 through a bearing;

[0025] The threaded rod 805 is movably connected to the slider 806, and the slider 806 is movably connected to the lifting rod 807 through a pin shaft. The slide groove processed on the lifting rod 807 is slidably connected to the surface of the fixed column 808, and the end of the fixed column 808 is fixedly connected to the inner wall of the first shell 801. The lifting rod 807 penetrates the first shell 801 through a through hole, and the lifting rod 807 is slidably connected to the first shell 801 through the through hole. The power of the third hydraulic cylinder 802 is turned on, and the telescopic end of the third hydraulic cylinder 802 moves to drive the slide bar 803 to slide along the slide groove processed on the protruding part of the inner wall of the first shell 801. At the same time, the protruding part of the slide bar 803 slides along the slide groove processed on the drum 804, thereby driving the drum 804 to rotate. The rotation of the drum 804 drives the threaded rod 805 to rotate, thereby driving the slider 806 to move. The movement of the slider 806 drives the lifting rod 807 to slide along the surface of the fixed column 808, so that the lifting rod 807 is slidably connected along the through hole processed on the first shell 801.

[0026] Refer to the attached Figure 5

[0027] The auxiliary screen changing mechanism 3 includes a second housing 301, the inner wall of the second housing 301 is fixedly connected to a motor 302 through a bracket, the end of the output shaft of the motor 302 is fixedly connected to a worm 303, the worm 303 is rotatably connected to the protruding portion of the inner wall of the second housing 301 through a bearing, the worm 303 is meshed with a worm wheel 304, the worm wheel 304 is rotatably connected to the inner wall of the second housing 301 through a pin shaft, a cam 305 is fixedly connected to the surface of the worm wheel 304, the surface of the cam 305 is fitted with the surface of a swing rod 307, the swing rod 307 is movably connected to the inner wall of the second housing 301 through a pin shaft, the swing rod 307 is movably connected to a transmission rod 306 through a pin shaft, a slide groove processed on the transmission rod 306 is slidably connected to the surface of the protruding portion of the inner wall of the second housing 301, and the protruding portion of the surface of the transmission rod 306 is fitted with the surface of a push rod 308;

[0028] A spring 309 is sleeved on the surface of the push rod 308, one end of the spring 309 is fixedly connected to the surface of the protruding part of the push rod 308, and the other end of the spring 309 is fixedly connected to the inner wall of the second shell 301 through a bracket. The push rod 308 passes through the second shell 301 through the bracket and the through hole, and the push rod 308 is slidably connected to the second shell 301 through the bracket and the through hole. When the power of the motor 302 is turned on, the output shaft of the motor 302 rotates to drive the worm 303 to rotate, thereby driving the worm wheel 304 to rotate. The rotation of the worm wheel 304 drives the cam 305 to rotate, thereby driving the swing rod 307 to swing. The swing of the swing rod 307 drives the transmission rod 306 to slide along the surface of the protruding part of the inner wall of the second shell 301. The transmission rod 306 moves to compress or stretch the spring 309, so that the push rod 308 slides along the through hole processed on the second shell 301.

[0029] Working principle:

[0030] When using the sand-falling machine which is easy to replace the screen:

[0031] Preparation process:

[0032] The height of the machine body 2 is adjusted according to the height of the operator, and the power supply of the third hydraulic cylinder 802 is started. The telescopic end of the third hydraulic cylinder 802 moves to drive the slide bar 803 to slide along the slide groove processed on the protruding part of the inner wall of the first shell 801, and at the same time, the protruding part of the slide bar 803 slides along the slide groove processed on the roller 804, thereby driving the roller 804 to rotate. The rotation of the roller 804 drives the threaded rod 805 to rotate, thereby driving the slider 806 to move. The movement of the slider 806 drives the lifting rod 807 to slide along the surface of the fixed column 808, so that the lifting rod 807 is slidably connected along the through hole processed on the first shell 801. The movement of the lifting rod 807 drives the machine body 2 to move. When the machine body 2 moves to an appropriate height, the power supply of the third hydraulic cylinder 802 is turned off to make it more convenient for the operator to operate.

[0033] Screen changing process:

[0034] When the filter screen 6 needs to be replaced, the opening and closing plate 10 is opened, and the power supply of the motor 302 is started. The output shaft of the motor 302 rotates to drive the worm 303 to rotate, thereby driving the worm wheel 304 to rotate. The rotation of the worm wheel 304 drives the cam 305 to rotate, thereby driving the swing rod 307 to swing. The swing of the swing rod 307 drives the transmission rod 306 to slide along the surface of the protruding part of the inner wall of the second shell 301. The transmission rod 306 moves to compress or stretch the spring 309, so that the push rod 308 slides along the through hole processed on the second shell 301, and the push rod 308 moves away from the groove processed on the filter screen 6, pulls out the filter screen 6, selects a suitable filter screen 6 and inserts it into the groove processed on the machine body 2, starts the power supply of the motor 302, resets the push rod 308, and fixes the filter screen 6, so that different types of molding sand can be screened.

[0035] Screening process:

[0036] The operator places the casting with molding sand on the surface of the filter screen 6, starts the power supply of the second hydraulic cylinder 7, and the telescopic end of the second hydraulic cylinder 7 moves to drive the knocking block 9 to move, so that the knocking block 9 knocks the filter screen 6 back and forth to perform the sand falling operation. At the same time, the power supply of the first hydraulic cylinder 4 and the power supply of the vacuum cleaner 5 are started. The telescopic end of the first hydraulic cylinder 4 moves to drive the vacuum cleaner 5 to slide along the slide groove processed on the machine body 2 to absorb the dust generated during screening.

[0037] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A sand shaker for convenient screen replacement, comprising a bottom plate (1) and a machine body (2), characterized in that: The surface of the bottom plate (1) is symmetrically provided with lifting mechanisms (8); a plurality of auxiliary screen changing mechanisms (3) are provided inside the machine body (2); a plurality of first hydraulic cylinders (4) are provided on the inner wall of the machine body (2); a vacuum cleaner (5) is fixedly connected to the telescopic end of the first hydraulic cylinder (4); the vacuum cleaner (5) is slidably engaged with a slide groove processed on the inner wall of the machine body (2); a plurality of second hydraulic cylinders (7) are fixedly connected to the inner wall of the machine body (2); a knocking block (9) is fixedly connected to the telescopic end of the second hydraulic cylinder (7).

2. A shakeout machine for easy replacement of screens according to claim 1, characterized in that: A sliding groove processed on the inner wall of the machine body (2) is slidably connected to the filter screen (6), and an opening and closing plate (10) is hinged on the surface of the machine body (2).

3. A shakeout machine for easy replacement of screens according to claim 1, characterized in that: The lifting mechanism (8) comprises a first shell (801), the inner wall of the first shell (801) is fixedly connected to a third hydraulic cylinder (802), the telescopic end of the third hydraulic cylinder (802) is fixedly connected to a sliding rod (803), the sliding rod (803) is slidably connected to a sliding groove processed on a protruding portion of the inner wall of the first shell (801), the protruding portion of the sliding rod (803) is slidably connected to a sliding groove processed on a roller (804), the roller (804) is rotatably connected to the inner wall of the first shell (801) via a pin, and the surface of the roller (804) is fixedly connected to a threaded rod (803). 5), the threaded rod (805) is rotatably connected to the first shell (801) through a bearing, the threaded rod (805) is movably connected to the slider (806), the slider (806) is movably connected to the lifting rod (807) through a pin shaft, the slide groove processed on the lifting rod (807) is slidably connected to the surface of the fixed column (808), the end of the fixed column (808) is fixedly connected to the inner wall of the first shell (801), the lifting rod (807) passes through the first shell (801) through a through hole, and the lifting rod (807) is slidably connected to the first shell (801) through the through hole.

4. A shakeout machine for easy replacement of screens according to claim 3, characterized in that: The end of the lifting rod (807) is fixedly connected to the surface of the machine body (2), and the surface of the first shell (801) is fixedly connected to the surface of the bottom plate (1).

5. The sand-falling machine for facilitating screen replacement according to claim 1, characterized in that: The auxiliary screen changing mechanism (3) comprises a second housing (301), the inner wall of the second housing (301) is fixedly connected to a motor (302) via a bracket, the end of the output shaft of the motor (302) is fixedly connected to a worm (303), the worm (303) is rotatably connected to a protruding portion of the inner wall of the second housing (301) via a bearing, the worm (303) is meshed with a worm wheel (304), the worm wheel (304) is rotatably connected to the inner wall of the second housing (301) via a pin, a cam (305) is fixedly connected to the surface of the worm wheel (304), the surface of the cam (305) is in contact with the surface of a swing rod (307), and the swing rod (307) is movably connected to the inner wall of the second housing (301) via a pin. The swing rod (307) is movably connected to the transmission rod (306) through a pin shaft, the slide groove processed on the transmission rod (306) is slidably connected to the surface of the protruding portion of the inner wall of the second shell (301), the protruding portion of the surface of the transmission rod (306) is in contact with the surface of the push rod (308), the surface of the push rod (308) is sleeved with a spring (309), one end of the spring (309) is fixedly connected to the surface of the protruding portion of the push rod (308), and the other end of the spring (309) is fixedly connected to the inner wall of the second shell (301) through a bracket, the push rod (308) passes through the second shell (301) through the bracket and the through hole, and the push rod (308) is slidably connected to the second shell (301) through the bracket and the through hole.

6. A sand shakeout machine for easy replacement of screens according to claim 5, characterized in that: The surface of the push rod (308) is in contact with the surface of the filter screen (6), and the surface of the second shell (301) is fixedly connected to the inner wall of the body (2).

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