Vacuum-assisted die-casting forming device

Abstract

The utility model relates to the technical field of die-casting forming, in particular to a vacuum auxiliary die-casting forming device. The sealing device comprises a vacuum machine and a sealing assembly, the vacuum machine and the sealing assembly are communicated through an air exhaust hose, and the sealing assembly is arranged in a die-casting assembly. Before molten metal is injected, the powder release agent is applied to the inner surface of the cavity of the base, so that a cast product is smoothly separated from the mold, the molten metal is injected into the base, and the pressing block is pressed into the base to form a sealed space by starting the pressing motor; a vacuum machine is started, air in an inner cavity of the base is pumped out from an air pumping hole in the pressing block through an air pumping rod connected with an air pumping hose, after vacuumizing in the base is completed, a sealing motor is started to drive a sealing rod to move upwards so that a sealing block can be tightly clamped in the air pumping hole of the pressing block, and a pressing motor is started again so that the pressing block can conduct pressure casting on molten metal; and the problem that the vacuum pump is damaged due to the residues caused by the fact that the vacuum pump sucks the residues of the powder release agent is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of die casting, in particular to a vacuum assisted die casting device. Background Art

[0002] In recent years, a vacuum die-casting device in which a vacuum pump is used to decompress the cavity has been widely used. The vacuum die-casting device forms a product by supplying molten metal such as aluminum to the mold. Die-casting using the vacuum die-casting device enables the molten metal to flow well during injection and prevents defects caused by air. Therefore, casting defects such as pores can be reduced. For die-casting using the vacuum die-casting device, a powder release agent is applied to the inner surface of the cavity before injecting the molten metal to smoothly separate the cast product from the mold. Therefore, when the gas in the cavity is sucked by the vacuum pump, there is a problem that the vacuum pump sucks the residue of the powder release agent and the vacuum pump is damaged by the residue. Utility Model Content

[0003] The purpose of the utility model is to provide a vacuum-assisted die-casting device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides a vacuum-assisted die-casting molding device, a vacuum-assisted die-casting molding device, including a die-casting component, the die-casting component including a base, the interior of the base is set to be hollow, a pressure block is arranged in the base, a side of the pressure block close to the bottom of the base is provided with an exhaust hole, an exhaust rod is fixedly installed above the pressure block, the exhaust rod is set to be a hollow cylinder, a sealing component is arranged inside the exhaust rod, the sealing component includes a sealing rod, a sealing block is fixedly installed on the side of the sealing rod close to the pressure block, the sealing block is set to be a frustum, the sealing block is tightly clamped in the hole of the pressure block, a plurality of filter plates are fixedly installed on the sealing rod, a plurality of filter holes are opened on the filter plate, and a rubber ring is sleeved on the outer wall of the filter plate.

[0005] As a further improvement of the technical solution, the die-casting assembly includes a motor seat, which is fixedly installed above the base.

[0006] As a further improvement of the technical solution, a downward pressure motor and a sealing motor are provided in the base, a pressure rod is fixedly connected to the side of the pressure block close to the motor seat, the rotating shaft of the downward pressure motor is connected to the pressure rod, and the rotating shaft of the sealing motor is connected to one end of the sealing rod.

[0007] As a further improvement of the technical solution, a vacuum machine is provided on one side of the die-casting component, and the vacuum machine evacuates the air in the base.

[0008] As a further improvement of the technical solution, an exhaust hose is arranged above the vacuum machine, one end of the exhaust hose is connected to the vacuum machine, and the other end is connected to the side wall of the exhaust rod.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] In the vacuum-assisted die-casting molding device, before injecting molten metal, a powder release agent is applied to the inner surface of the base cavity to smoothly separate the cast product from the mold, and the molten metal is injected into the base. By turning on the downward pressure motor, the pressing block is pressed down into the base to form a sealed space, and the vacuum machine is turned on to extract the air in the inner cavity of the base from the suction hole on the pressing block through the suction rod connected to the suction hose. The powder release agent is intercepted by a plurality of filter plates to prevent the powder release agent from being sucked into the vacuum machine and causing a malfunction of the vacuum machine. After the vacuuming in the base is completed, the sealing motor is turned on to drive the sealing rod to move upward so that the sealing block is tightly clamped in the suction hole of the pressing block, and the downward pressure motor is turned on again to allow the pressing block to die-cast the molten metal. The sealing component provided avoids the problem that the vacuum pump sucks the residue of the powder release agent and causes the vacuum pump to be damaged by the residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0013] Figure 3 It is a schematic diagram of the sealing component structure of the utility model.

[0014] The meaning of each number in the figure is:

[0015] 1. Vacuum machine;

[0016] 2. Vacuum hose;

[0017] 3. Die-casting assembly; 31. Motor seat; 32. Base; 33. Press block; 34. Pumping rod;

[0018] 4. Sealing assembly; 41. Sealing rod; 42. Filter plate; 43. Rubber ring; 44. Sealing block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] Example 1

[0022] See also Figure 1-Figure 3 As shown, this embodiment provides a vacuum-assisted die-casting molding device, including a vacuum machine 1, through which the air in the device is extracted, the air holes inside the die-casting are eliminated or reduced during die-casting, and the mechanical properties and surface quality of the die-casting are improved. An exhaust hose 2 is arranged above the vacuum machine 1, and the vacuum machine 1 extracts the air inside the device through the exhaust hose 2. One end of the exhaust hose 2 is connected to the vacuum machine 1 and the other end is connected to a sealing component 4. A die-casting component 3 is arranged outside the sealing component 4. The die-casting component 3 includes a motor base 31, and a downward pressure motor and a sealing motor are arranged inside the motor base 31. The molten metal is die-casted by rotating the downward pressure motor, and the switch of the exhaust hole is controlled by rotating the sealing motor. A base 32 is fixedly installed below the motor base 31, and the molten metal is sealed. The metal is loaded in the base 32 for die-casting, and a pressure block 33 is arranged inside the base 32. A pressure rod is fixedly installed on one side of the pressure block 33 close to the motor base 31. The downward pressing motor in the motor base 31 is connected to the pressure rod. When the downward pressing motor rotates, it drives the pressure rod to move downward, so that the pressure rod pushes the pressure block 33 downward to die-cast the molten metal in the base 32. An exhaust hole is provided on one side of the pressure block 33 close to the bottom of the base 32, and an exhaust rod 34 is fixedly installed above the exhaust hole of the pressure block 33. The vacuum machine 1 is connected to the exhaust rod 34 through the exhaust hose 2 to extract the air between the pressure block 33 and the bottom of the base 32, so that the inside of the device is in a vacuum state during die-casting. A sealing component 4 is arranged inside the exhaust rod 34 to control the closing of the sealing hole.

[0023] The sealing assembly 4 includes a sealing rod 41, one end of which is connected to a sealing motor. When the sealing motor rotates, the sealing rod 41 is driven to slide up and down, thereby controlling the switch of the exhaust hole on the pressing block 33. A truncated cone-shaped sealing block 44 is provided on the side of the sealing rod 41 away from the motor seat 31. The sealing block 44 is tightly clamped in the sealing hole of the pressing block 33 to prevent molten metal and powder release agent from entering the exhaust rod 34 and causing damage to the vacuum machine 1. A plurality of filter plates 42 are fixedly mounted on the sealing rod 41. A plurality of filter holes are provided on the filter plate 42. When the vacuum machine 1 is evacuated, the powder release agent in the base 32 is intercepted through the provided plurality of filter holes to prevent the powder release agent from being sucked into the vacuum machine 1. A rubber ring 43 is sleeved on the outer wall of the filter plate 42. The elastic rubber ring 43 is provided so that the filter plate 42 moves up and down following the sealing rod 41 to prevent the powder release agent from entering the exhaust hose 2 during the up and down movement.

[0024] When the vacuum-assisted die-casting molding device of this embodiment is used in practice, before injecting molten metal, a powder release agent is applied to the inner surface of the base 32 cavity to smoothly separate the cast product from the mold, and the molten metal is injected into the base 32. By turning on the downward pressing motor, the pressing block 33 is pressed down into the base 32 to form a sealed space, and the vacuum machine 1 is turned on to extract the air in the inner cavity of the base 32 from the suction hole on the pressing block 33 through the suction hole of the pressing block 33 through the suction rod 34 connected to the suction hose 2. The powder release agent is intercepted by a plurality of filter plates 42 to prevent the powder release agent from being sucked into the vacuum machine 1 and causing a malfunction of the vacuum machine 1. After the vacuuming in the base 32 is completed, the sealing motor is turned on to drive the sealing rod 41 to move upward so that the sealing block 44 is tightly clamped in the suction hole of the pressing block 33, and the downward pressing motor is turned on again to make the pressing block 33 die-cast the molten metal. The sealing component 4 provided avoids the problem that the vacuum machine 1 sucks the residue of the powder release agent and causes the vacuum machine 1 to be damaged by the residue.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A vacuum-assisted die-casting molding device, comprising a die-casting component (3), wherein the die-casting component (3) comprises a base (32), wherein the interior of the base (32) is arranged to be hollow, wherein a pressing block (33) is arranged in the base (32), wherein a side of the pressing block (33) close to the bottom of the base (32) is provided with an air extraction hole, wherein: A vacuum rod (34) is fixedly mounted above the pressing block (33). The vacuum rod (34) is configured as a hollow cylinder. A sealing assembly (4) is arranged inside the vacuum rod (34). The sealing assembly (4) comprises a sealing rod (41). A sealing block (44) is fixedly mounted on the side of the sealing rod (41) close to the pressing block (33). The sealing block (44) is configured as a truncated cone. The sealing block (44) is tightly clamped in the hole of the pressing block (33). A plurality of filter plates (42) are fixedly mounted on the sealing rod (41). A plurality of filter holes are opened on the filter plate (42). A rubber ring (43) is sleeved on the outer wall of the filter plate (42).

2. The vacuum-assisted die-casting device according to claim 1, characterized in that: The die-casting assembly (3) comprises a motor seat (31), and the motor seat (31) is fixedly mounted above a base (32).

3. The vacuum-assisted die-casting device according to claim 2, characterized in that: A pressing motor and a sealing motor are arranged in the base (32); a pressing rod is fixedly connected to one side of the pressing block (33) close to the motor seat (31); the rotating shaft of the pressing motor is connected to the pressing rod; and the rotating shaft of the sealing motor is connected to one end of the sealing rod (41).

4. The vacuum-assisted die-casting device according to claim 1, characterized in that: A vacuum machine (1) is provided on one side of the die-casting component (3), and the vacuum machine (1) evacuates the air in the base (32).

5. The vacuum-assisted die-casting device according to claim 4, characterized in that: An exhaust hose (2) is arranged above the vacuum machine (1), one end of the exhaust hose (2) is connected to the vacuum machine (1), and the other end is connected to the side wall of the exhaust rod (34).

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