CN2522196Y

CN2522196Y - Frequency-modulation air-cushion three-D vibration table

Info

Publication number: CN2522196Y
Application number: CN 02204891
Authority: CN
Inventors: 黄述哲; 刘涛; 黄卉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-04
Filing date: 2002-02-04
Publication date: 2002-11-27
Anticipated expiration: 2012-02-04

Abstract

The utility model relates to a 3-dimension vibration table with a frequency modulation air cushion and is characterized in that two sides of an upper mesa are respectively provided with two pneumatic clamping devices, four corners of a lower mesa which are provided with one to four locating devices are equipped with four air springs, four sides of the mesa are equipped with four vibration motors, and the lower bottom is equipped with two vibration motors. An atmolysis cylinder and an atmolysis tank, which are connected with an air compressor, are arranged on the frame, the atmolysis cylinder is connected with the air cylinder of the clamping device and the atmolysis tank is connected with the air spring. The vibration table regulates the frequency and the amplitude of the vibration motor by a frequency regulator. The air spring reduces vibration on the elevation of the vibration table and the locating device supports the vibration table. The vibration table has the advantages and the effects of a good vibration effect, an accurate and reliable location, a convenient operation and a greatly improved 3-dimension vibration compactness effect.

Description

Frequency modulation air cushion three-dimensional vibrating platform

(1) technical field

The utility model relates to a kind of frequency modulation air cushion three-dimensional vibrating platform, is used for the lost foam casting moulding, belongs to mechanical field.

(2) background technology

The shake table of traditional lost foam casting utilization adopts general vibrating motor, metal spring or rubber spring are realized little moulding of shaking, but this kind shake table can not improve exciting force according to continuous the increasing of vibrating object weight in modeling process, when causing the sandbox sand a small amount of, amplitude is excessive, fragile bubbles model, or when sandbox was filled molding sand, amplitude was too small again, fully the consolidation molding sand, and the spring of metal or rubber spring can not change the coefficient of stiffiness with the vibrating object weight change, make the shake table working range restricted greatly, sandbox does not tighten on shake table, and troublesome poeration, loosening easily again, influence vibrating effect greatly.

(3) summary of the invention

The purpose of this utility model is the shortcoming and deficiency in order to overcome above-mentioned prior art just, and provide a kind of frequency modulation air cushion three-dimensional vibrating platform that can add the three-dimensional vibrating of corresponding automatic adjusting exciting force of sand weight change and amplitude with box moulding, thereby realize the optimal vibration effect, improve molding quality, also simplified operation.

The purpose of this utility model realizes by following technical proposal:

Frequency modulation air cushion three-dimensional vibrating platform, involving vibrations platform table top, vibrating motor, gripping mechanism, pneumatic spring and support is characterized in that:

A) in upper table surface (7) both sides of shake table two pneumatic chucking devices are arranged respectively, it is made up of cylinder (6), pressure head (2) and support (3), pressure head is a square, the outer end is connected with cylinder on being installed in upper table surface, inner be fixed on channel-section steel (5) on support top bearing pin be connected, cylinder passes through pneumatic hose (16) and is connected with sub-cylinder (21);

B) adorn four air springs (10) for four jiaos in following table (17) bottom surface of shake table, top is screwed on the following table bottom surface by cover plate, (11) Zhi Cheng And are fixed on the support (19), and vibrating spring is connected with dividing gas tank (12) by pneumatic hose with bracing frame in the bottom;

C) hang with a vibrating motor (9) respectively in four sides of shake table, hang two vibrating motors (18) in the upper table surface bottom surface of shake table, six vibrating motors are connected with frequency modulator respectively;

D) fixing 1-4 positioner in the following table of shake table bottom, it is made up of the positioning sleeve (14) and the columnar reference column (13) of truncated cone, and positioning sleeve is fixed on bottom the shake table following table, and reference column is fixed on the support;

E) fixing gas tank (12) and the sub-cylinder (21) of dividing on the support of shake table divides gas tank to be connected with air compressor with magnetic valve (20) by three linked piece with sub-cylinder, and support is supported by I-steel and with fot screw (15) upper and lower plate fixed on the ground.

Owing to take technique scheme to make the utility model technology have following advantage and effect:

A) infinitely variable speeds is adopted in moulding, and exciting force and amplitude are regulated automatically with the vibrating object weight change, makes vibrating effect the best;

B) adopt air spring, the coefficient of stiffiness changes with sandbox weight, realizes that air-cushion type suspends, and the shake table working range is expanded significantly, and noise reduces greatly, and is all very convenient in free work or production line use;

C) gripping mechanism makes sandbox when being sent to the shake table place automatically, and accurate positioning is firm, and is easy to operate;

D) three-dimensional vibrating makes the back-up sand of complex-shaped surface mould foundry goods convenient greatly, and compacting effect improves greatly.

(4) description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the vertical view of Fig. 1.

(5) specific embodiment

Frequency modulation air cushion three-dimensional vibrating platform, by Fig. 1, shown in 2, its involving vibrations platform table top, vibrating motor, gripping mechanism, pneumatic spring and support are formed, respectively there are two pneumatic chucking devices upper table surface (7) both sides at shake table, it is by cylinder (6), pressure head (2) and support (3) are formed, pressure head is a square, the outer end is connected with cylinder on being installed in upper table surface, inner be fixed on channel-section steel (5) on support top bearing pin be connected, cylinder is connected with sub-cylinder (21) by pneumatic hose (16), pressure air by air compressor is transported to sub-cylinder by triplet and magnetic valve (20), work by sub-cylinder dispense pressure air control cylinder again, lift or put down pressure head, finish the location chucking of sandbox (1), when cylinder intake, the chucking of end decline in advance sandbox on the pressure head rear portion, when cylinder was given vent to anger, pressure head fell after rise, and chucking loosens.

Four air springs (10) are adorned for four jiaos in following table (17) bottom surface at shake table, top is screwed on the following table bottom surface by cover plate, (11) Zhi Cheng And are fixed on the support (19) with bracing frame in the bottom, vibrating spring is connected with dividing gas tank (12) by pneumatic hose, pressure air by air compressor is transported to the branch gas tank by triplet and magnetic valve, again by minute gas tank dispense pressure air control air spring work, air spring can change the blowing pressure coefficient of stiffiness, rise, landing and damping effect to shake table promptly reduce noise.

Hang with a vibrating motor (9) respectively in four sides of shake table, upper table surface at shake table, the bottom surface hangs two vibrating motors (18), six vibrating motors are connected with the frequency modulator (not shown) respectively, six motors are realized the three-dimensional vibrating of shake table jointly, make vibration frequency and amplitude adjustable by frequency modulator.

Fixing 1-4 positioner in the following table of shake table bottom, it is made up of the positioning sleeve (14) and the columnar reference column (13) of truncated cone, positioning sleeve is fixed on shake table following table bottom, reference column is fixed on the support, positioner supports vibration table surface, according to table top size and 1-4 support of stable case operated by rotary motion.

Fixing cylinder respectively and branch gas tank divide gas tank to be connected with air compressor with magnetic valve (20) by three linked piece with sub-cylinder on the support of shake table, and support supports upper and lower plate by I-steel and fixes on the ground with fot screw (15).

The upper and lower table top of shake table supports with I-steel (8), is convenient to the installation of vibrating motor.

Sandbox is transferred to the control button of connecting the pneumatic chucking device of switch board on the vibration table surface during work by running roller (4), cylinder charge, the gripping mechanism tight flask is connected the inflation of control cabinet and is accused that button divides the gas tank inflation, the inflation air spring, be generally 0.2-1.0Mpa, vibrate and electronicly vibrate in the direction that requires to vibrate according to instruction, with the frequency modulator frequency modulation of 5-15KW, tuning range is the 70-80 hertz, add sand according to a conventional method, molding sand consolidation in vibration.

Claims

1, frequency modulation air cushion three-dimensional vibrating platform, involving vibrations platform table top, vibrating motor, gripping mechanism, pneumatic spring and support is characterized in that:

C) hang with a vibrating motor (9) respectively in four sides of shake table, at the upper table surface of shake table, the bottom surface hangs two vibrating motors (18), and six vibrating motors are connected with frequency modulator respectively;