CN102179507A - Three-dimensional parallel-connected vibrating casting machine - Google Patents

Abstract

The invention relates to the field of vibration casting equipment, which consists of a sand box, a vibration platform, a longitudinal vibration chain, a transverse vibration chain, a vibration motor, a suspension bracket, a spring, a main bracket and a base, wherein: the sand box is fixed on the vibration platform by bolts The vibration motor is fixed on the lower mounting surface of the vibration platform; the upper ends of the four suspension brackets are connected with the vibration platform by bolts, and the lower ends of the four suspension brackets are respectively suspended on the main bracket by springs; the main bracket is fixed on the base; The upper ends of the longitudinal vibration chain and the transverse vibration chain are connected with the vibration platform, and their lower ends are fixed on the base. The invention has a simple structure, the longitudinal vibration chain and the lateral vibration chain do not interfere with each other, and can realize vibration along the three directions of X, Y, and Z, and the vibration platform can be obtained by adjusting the dynamic parameters of the vibration motor and the driving source of the two vibration chains. Vibration output, so that the mold in the sand box can obtain appropriate vibration excitation, and improve the quality of castings.

Description

Three-dimensional parallel vibration casting machine

Technical field:

The invention relates to the field of vibration casting equipment, in particular to a three-dimensional parallel vibration casting machine, which can realize the spatial three-dimensional vibration of a mold.

Background technique:

During the pouring process of existing metal castings, because the sand box or the mold is in a static state, the bubbles in the metal liquid are difficult to overflow, which is not conducive to the floating of slag inclusions and the flow of the metal liquid during the solidification process, especially for medium and large steel castings Due to the large difference in wall thickness of the overall structure of castings, conventional processes are difficult to ensure overall balanced cooling, and local defects such as cracks, shrinkage porosity, shrinkage cavities, slag inclusions, and coarse grains are prone to occur, which seriously affects the improvement of casting product quality. Especially for large-scale steel castings, after non-destructive testing, casting defects are particularly prominent, the workload of repair welding and repairing is heavy, the scrap rate is high, and the production cost is increased. In addition, because the gating riser system in the prior art relies on the metal weight of the riser as the system pressure, a large amount of metal is required, so the entire casting cost is high.

At present, the existing patents have also proposed some solutions. For example, the patent application number 200720049505.2 proposes an implementation scheme of hydraulic vibration casting equipment, and the patent application number 201020117378.7 discloses a mechanical vibration generated by the centrifugal motion of the semicircular shaft. Vibration casting machines, etc., but the vibration devices proposed in these patents can only generate vibrations with 1-2 degrees of freedom, and the cost of hydraulic vibration tables is relatively high, and maintenance is inconvenient. When the traditional vibration excitation device is used, the casting mold is supported by a compression spring or a spring plate. Part of the freedom of the casting mold is restricted, and the degree of freedom of vibration is small. It only depends on increasing the vibration amplitude and intensity (the vibration intensity is too large and may damage the sand mold) The ability to improve the vibration effect is limited, which can no longer meet the actual needs of production. For some casting molds with complex cavity, poor liquid metal fluidity and high casting quality requirements, as well as some medium and large steel castings, it is urgent to use a space-based multi-dimensional vibration casting machine.

The three-dimensional parallel vibration casting machine involved in the present invention can realize the vibration along the three directions of X, Y and Z in space, and the parameters such as the vibration amplitude and frequency of each vibration direction can be controlled and adjusted separately, which can overcome the existing vibration casting platform. technical flaws.

Invention content:

The technical problem to be solved by the present invention is to provide a parallel vibration casting machine capable of realizing three-dimensional vibration.

The technical problem to be solved by the present invention is realized by the following technical solutions.

A three-dimensional parallel vibration casting machine, which consists of a sand box (1), a vibration platform (2), a longitudinal vibration chain (3), a transverse vibration chain (4), a vibration motor (5), a suspension bracket (6), a spring (7 ), the main support (8) and the base (9). Wherein: the sand box (1) is fixed on the upper installation surface of the vibration platform (2) by bolts; the vibration motor (5) is fixed on the lower installation surface of the vibration platform (2); the upper ends of the four suspension brackets (6) are connected with the The vibrating platform (2) is connected by bolts, and the lower ends of the four suspension brackets (6) are respectively suspended on the main bracket (8) by springs (7); the main bracket (8) is fixed on the base (9); the longitudinal vibration chain ( 3) and the upper end of the transverse vibration chain (4) are connected with the vibration platform (2), and their lower ends are all fixed on the base (9).

The longitudinal vibration chain (3) is composed of three rotating pairs (R1, R2, R3), a moving pair (P1) and connecting rods (L1, L2, L3) between them, and the connecting rod (L1) passes through The rotating pair (R1) is connected with the vibrating platform (2), the connecting rod (L1) is connected with the connecting rod (L2) through the rotating pair (R2), and the connecting rod (L2) is connected through the rotating pair (R3) and the connecting rod (L3) ), the connecting rod (L3) is connected with the base (9) through the moving pair (P1), and the axis of the rotating pair (R1, R2, R3) is parallel to the axis of the moving pair (P1); the transverse The vibration chain (4) consists of three rotating pairs (R4, R5, R6), a moving pair (P2) and connecting rods (L4, L5, L6) between them, and the connecting rod (L4) passes through the rotating pair (R4 ) is connected with the vibration platform (2), the connecting rod (L4) is connected with the connecting rod (L5) through the rotary pair (R5), and the connecting rod (L5) is connected with the connecting rod (L6) through the rotary pair (R6), The connecting rod (L6) is connected with the base (9) through the moving pair (P2), and the axis of the rotating pair (R4, R5, R6) is parallel to the axis of the moving pair (P2); the movement of the longitudinal vibration chain (3) The axis of the pair (P1) is perpendicular to the axis of the moving pair (P2) of the transverse vibration chain (4), and the moving pair (P1, P2) is the active pair of the mechanism.

Adding an exciting force to the moving pair (P2) of the transverse vibration chain (4) can produce lateral (X-direction) vibration; adding an exciting force to the moving pair (P1) of the longitudinal vibration chain (3) can produce Vibration (direction Y) is generated; vibration in the vertical direction (direction Z) is provided by two vibration motors (5).

The invention is simple in structure, easy to assemble, adjust and maintain, and can realize vibrations in three directions of X, Y and Z, and the vibrations in the three directions are independent of each other without interfering with each other, and can also be adjusted by adjusting the vibration motor and the two vibration The dynamic parameters of the chain drive source enable the vibration platform to obtain different vibration outputs, so that the mold in the sand box can obtain appropriate vibration excitation and improve the quality of the casting.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of longitudinal vibration chain;

Fig. 3 is the structural representation of lateral vibration chain;

In the figure: 1. Sand box; 2. Vibration platform; 3. Longitudinal vibration chain; 4. Horizontal vibration chain; 5. Vibration motor;

Detailed ways:

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with specific embodiments and illustrations.

As shown in Figure 1, a three-dimensional parallel vibration casting machine consists of a sand box 1, a vibration platform 2, a longitudinal vibration chain 3, a transverse vibration chain 4, a vibration motor 5, a suspension bracket 6, a spring 7, a main bracket 8 and a base 9 composition. Among them: the sand box 1 is fixed on the upper installation surface of the vibration platform 2 by bolts; the vibration motor 5 is fixed on the lower installation surface of the vibration platform 2; the upper ends of the four suspension brackets 6 are connected with the vibration platform 2 by bolts, The lower ends of the brackets 6 are respectively suspended on the main bracket 8 by the springs 7; the main bracket 8 is fixed on the base 9; superior.

As shown in Figures 2 and 3, the longitudinal vibration chain 3 is composed of three revolving pairs R1, R2, R3, a moving pair P1 and connecting rods L1, L2, L3 between them, and the connecting rod L1 rotates The pair R1 is connected with the vibration platform 2, the connecting rod L1 is connected with the connecting rod L2 through the rotating pair R2, the connecting rod L2 is connected with the connecting rod L3 through the rotating pair R3, and the connecting rod L3 is connected with the base 9 through the moving pair P1, And the axis of rotating pair R1, R2, R3 is parallel to the axis of moving pair P1; described transverse vibration chain 4 is composed of three rotating pairs R4, R5, R6, a moving pair P2 and connecting rods L4, Composed of L5 and L6, the connecting rod L4 is connected with the vibration platform 2 through the rotating pair R4, the connecting rod L4 is connected with the connecting rod L5 through the rotating pair R5, the connecting rod L5 is connected with the connecting rod L6 through the rotating pair R6, and the connecting rod L6 The moving pair P2 is connected to the base 9, and the axis of the rotating pair R4, R5, R6 is parallel to the axis of the moving pair P2; the axis of the moving pair P1 of the longitudinal vibration chain 3 and the axis of the moving pair P2 of the transverse vibration chain 4 are perpendicular to each other, and the moving pairs P1 and P2 are active pairs of the mechanism.

Adding an exciting force to the mobile pair P2 of the transverse vibration chain 4 can produce horizontal (X-direction) vibration; adding an exciting force to the mobile pair P1 of the longitudinal vibration chain 3 can produce Y-direction vibration; and the vertical direction The vibration on (Z direction) is provided by two vibrating motors 5 . The power of the moving pairs P1 and P2 of the longitudinal vibration chain 3 and the lateral vibration chain 4 can be provided by a linear motor, an electric cylinder, a servo hydraulic cylinder, or a linear reciprocating mechanism (such as a crank slider mechanism, a rack and pinion mechanism, etc.) driven by a rotary motor.

When working, first fix the casting mold in the sand box 1, fill the surroundings of the casting mold with insulating sand, and then according to the material, shape, quantity of the casting, the total load on the vibration platform 2 and the different stages of the pouring process, etc. Determine the parameters such as the number of degrees of freedom of vibration, the magnitude of the exciting force, the vibration amplitude, the vibration frequency, and the vibration time, and then adjust the power on the moving pair P2 of the transverse vibration chain 4, the power on the moving pair P1 of the longitudinal vibration chain 3, and adjust the generation The included angle of the eccentric block of the vibrating motor 5 vibrating in the Z direction. According to the characteristics of the poured metal and the shape of the casting, the start-up time is determined, and the vibration casting machine is started to obtain a suitable excitation for the mold, enhance the fluidity of the liquid metal, refine and evenly distribute the grains, and reduce shrinkage cavities. , Slag inclusion, eliminate casting stress, thereby improving casting quality. After the vibration is completed, turn off the excitation force in all directions to keep the mold in the sand box 1 for a period of time, then take out the mold and clean the casting.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A three-dimensional parallel vibration casting machine, consisting of a sand box (1), a vibration platform (2), a longitudinal vibration chain (3), a transverse vibration chain (4), a vibration motor (5), a suspension bracket (6), a spring (7), main support (8) and base (9) form, it is characterized in that: described sand box (1) is fixed on the upper mounting surface of vibration platform (2) by bolt; Vibration motor (5) is fixed on The lower mounting surface of the vibration platform (2); the upper ends of the four suspension brackets (6) are connected with the vibration platform (2) by bolts, and the lower ends of the four suspension brackets (6) are suspended on the main bracket ( 8); the main support (8) is fixed on the base (9); the upper ends of the longitudinal vibration chain (3) and the transverse vibration chain (4) are connected with the vibration platform (2), and their lower ends are fixed on the base (9) )superior. 2. The three-dimensional parallel vibration casting machine according to claim 1, characterized in that: the longitudinal vibration chain (3) consists of three rotating pairs (R1, R2, R3), a moving pair (P1) and their The connecting rod (L1, L2, L3) is composed of connecting rods (L1) connected with the vibration platform (2) through the rotating pair (R1), and the connecting rod (L1) is connected through the rotating pair (R2) and the connecting rod (L2) The connecting rod (L2) is connected with the connecting rod (L3) through the rotating pair (R3), the connecting rod (L3) is connected with the base (9) through the moving pair (P1), and the rotating pair (R1, R2, The axis of R3) is parallel to the axis of the moving pair (P1). 3. The three-dimensional parallel vibration casting machine according to claim 1, characterized in that: the transverse vibration chain (4) consists of three rotating pairs (R4, R5, R6), a moving pair (P2) and their The connecting rod (L4, L5, L6) is composed of the connecting rod (L4) connected with the vibration platform (2) through the rotating pair (R4), and the connecting rod (L4) is connected through the rotating pair (R5) and the connecting rod (L5) The connecting rod (L5) is connected with the connecting rod (L6) through the rotating pair (R6), the connecting rod (L6) is connected with the base (9) through the moving pair (P2), and the rotating pair (R4, R5, The axis of R6) is parallel to the axis of the moving pair (P2). 4. The three-dimensional parallel vibration casting machine according to claim 1, 2, 3, characterized in that: the axis of the moving pair (P1) of the longitudinal vibration chain (3) and the moving pair of the transverse vibration chain (4) The axes of (P2) are perpendicular, and the moving pair (P1, P2) is the active pair of the mechanism.

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