Vertical liquid feeding die-casting device

Abstract

The invention belongs to the technical field of vertical die casting, and discloses a vertical feeding die casting device which comprises a fixed die plate and a die mounted on the fixed die plate, a charging barrel is mounted in the fixed die plate, the charging barrel penetrates through the fixed die plate to be mounted below the die, a feeding opening is formed in one side of the charging barrel, a sealing plug is mounted at the feeding opening, and a feeding opening is formed in the other side of the charging barrel. A feeding pipe is arranged on the side, opposite to the sealing plug, of the melt feeding opening, a driving device is arranged on the side, close to the melt feeding opening, of the fixed mold plate so as to control movement of the sealing plug and achieve opening and closing of the melt feeding opening, an injection hydraulic cylinder is arranged below the fixed mold plate, a punch rod is arranged in the injection hydraulic cylinder, a punch is arranged at one end of the punch rod, and a piston rod is arranged at the other end of the punch rod. The vertical type liquid feeding die-casting device is simple and reliable in structure, the die-casting period is shortened, the gas content in a die cavity and molten metal is reduced, and the product quality and benefits can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical die casting, in particular to a vertical soup-feeding die casting device. Background Art

[0002] Die casting refers to the die casting mechanism of the die casting machine pushing the injection piston at high speed and high pressure to fill the liquid metal in the injection barrel into the mold cavity. The die casting machine with both the clamping mechanism and the injection mechanism arranged vertically is called a full vertical die casting machine. Its injection system is at the bottom. There are two ways of pouring. One is to pour the molten metal into the vertical barrel before the mold is closed. The die casting process is as shown in the following figure. Figure 1 After the molten metal is poured into the barrel, the mold is closed, the injection punch rises to press the metal hydraulically into the mold cavity, and after cooling and solidification, the mold is opened and the casting is ejected, completing a die-casting cycle.

[0003] The other is a swing-type shooting table. The die-casting process is as shown in the attached Figure 2 As shown, the barrel first descends before feeding the liquid, and then the barrel and the injection cylinder are swung outward together by hydraulic pressure. The molten metal is poured into the barrel through the spoon and then returned to the vertical position for injection.

[0004] However, both of these structures have drawbacks: the first method of feeding the molten metal requires the mold to be closed after each injection, reducing production efficiency and causing the molten metal to cool easily, resulting in poor fluidity. The second method of feeding the molten metal is cumbersome, inefficient, and prone to cooling. To address these issues, this patent proposes a new method of feeding the molten metal for vertical die-casting machines that significantly shortens the injection time, ensures the fluidity of the molten metal, and improves product quality and profitability. Summary of the Invention

[0005] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a vertical molten metal die-casting device that shortens the die-casting cycle, reduces the gas content in the mold cavity and the molten metal, and is conducive to improving product quality and efficiency.

[0006] To achieve this object, the present invention adopts the following technical solutions: The present invention provides a vertical soup-feeding die-casting device, comprising a fixed template and a mold installed on the fixed template, a material barrel installed in the fixed template, the material barrel passing through the fixed template and installed below the mold, a soup-feeding port opened on one side of the material barrel, a sealing plug installed at the soup-feeding port, a feeding pipe provided on the side of the soup-feeding port opposite to the sealing plug, a driving device provided on the side of the fixed template close to the soup-feeding port, a driving end of the driving device connected to the sealing plug to control the movement of the sealing plug to realize the opening and closing of the soup-feeding port, an injection hydraulic cylinder provided below the fixed template, a punch rod provided inside the injection hydraulic cylinder, a punch provided at one end of the punch rod, and the punch slidably connected to the inner wall of the material barrel.

[0007] A preferred technical solution of the present invention is that the driving device is used to control the moving position of the sealing plug, and thus can be used to control the speed and manner in which the soup enters the barrel.

[0008] The preferred technical solution of the present invention is that the sealing plug structure is adapted to the shape of the soup feeding port, and when it is in a sealed state, it can completely restore the original shape and smoothness of the inner wall of the barrel.

[0009] The preferred technical solution of the present invention is that the feed pipe is arranged obliquely so that the soup feeding port is at its lowest position, so that the soup can flow completely into the barrel under the action of gravity.

[0010] A preferred technical solution of the present invention is that guide grooves are provided on both sides of the inner wall of the barrel opening, and guide sliders are provided on both sides of the sealing plug corresponding to the guide grooves.

[0011] The preferred technical solution of the present invention is that the cross section of the sealing plug and the shape of the soup feeding port change linearly and continuously in the wall thickness direction to ensure that the sealing plug can move freely inward in its fully closed position, that is, move toward the axis of the barrel, but cannot move outward.

[0012] The preferred technical solution of the present invention is that the cross section of the sealing plug and the shape of the soup feeding port change in a step-like manner in the wall thickness direction, limiting the extreme position of the sealing plug's outward movement in a step form, and accurately positioning the sealing state.

[0013] A preferred technical solution of the present invention is that a guide surface is provided on the side of the sealing plug close to the soup feeding port.

[0014] A preferred technical solution of the present invention is that a mounting opening is provided on the fixed template, and the feed pipe is arranged through the mounting opening.

[0015] The beneficial effects of the present invention are: 1. During feeding, the present invention drives the sealing plug to move through a driving device. The guide surface provided at the bottom of the sealing plug cooperates with the inclined feed pipe, so that the molten metal entering the feed pipe can flow more smoothly into the barrel after passing through the guide surface, thereby avoiding splashing of the molten metal and entrainment of gas during the feeding process. At the same time, as the liquid level rises from the bottom to the top, the gas in the barrel is discharged from the top, thereby improving the yield and quality of the castings. 2. The present invention opens a soup feeding port on the side of the barrel and controls the opening and closing of the sealing plug through a driving device, so that after the molten metal flows into the barrel, rapid injection can be carried out after the soup feeding port is closed, which effectively improves the efficiency of injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the die-casting structure of the comparative document 1 provided in a specific embodiment of the present invention; Figure 2It is a schematic diagram of the die-casting structure of the comparative document 2 provided in a specific embodiment of the present invention; Figure 3 It is a structural schematic diagram of a soup-feeding die-casting device provided in a specific embodiment of the present invention; Figure 4 This is a cross-sectional view of the structure of the soup feeding die-casting device provided in a specific embodiment of the present invention; Figure 5 Schematic diagram of the position of the sealing plug and the feeding tube provided in a specific embodiment of the present invention; Figure 6 Schematic diagram of the sealing structure of the sealing plug provided in a specific embodiment of the present invention; Figure 7 Schematic diagram of the position of the movable structure of the sealing plug provided in a specific embodiment of the present invention; Figure 8 It is a schematic diagram of the installation position of the sealing plug provided in a specific embodiment of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Fixed plate; 11. Mounting port; 2. Mold; 3. Barrel; 31. Feed port; 32. Guide groove; 4. Sealing plug; 41. Guide slide; 42. Guide surface; 5. Driving device; 6. Injection hydraulic cylinder; 61. Punch rod; 62. Punch; 7. Feed pipe. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0019] A vertical soup-feeding die-casting device comprises a fixed template 1 and a mold 2 installed on the fixed template 1, a barrel 3 is installed in the fixed template 1, the barrel 3 passes through the fixed template 1 and is installed below the mold 2, a soup-feeding port 31 is opened on one side of the barrel 3, a sealing plug 4 is installed at the soup-feeding port 31, a feeding pipe 7 is provided on the side of the soup-feeding port 31 opposite to the sealing plug 4, a driving device 5 is provided on the side of the fixed template 1 close to the soup-feeding port 31, a driving end of the driving device 5 is connected to the sealing plug 4 to control the movement of the sealing plug 4 to realize the opening and closing of the soup-feeding port 31, an injection hydraulic cylinder 6 is provided below the fixed template 1, a punch rod 61 is provided inside the injection hydraulic cylinder 6, a punch rod 61 is provided at one end of the punch rod 61 is provided with a punch 62, and the punch 62 is slidably connected to the inner wall of the barrel 3.

[0020] After the movable platen in the mold 2 drives the upper mold to close the lower mold installed on the fixed mold plate 1, the sealing plug 4 is driven by the driving device 5 to move in the axial direction of the barrel 3, the soup feeding port 31 of the barrel 3 is opened, and the metal liquid is added through the feeding pipe 7. A sufficient amount of metal liquid enters the barrel 3 through the feeding pipe 7, and the driving device 5 drives the sealing plug 4 to move to a position adapted to the soup feeding port 31 to achieve the closure of the soup feeding port 31. Under the action of the injection hydraulic cylinder 6, the punch 62 presses the metal into the cavity of the mold 2 at high speed and high pressure, and obtains the die-casting product after cooling. , the movable template opens the mold, the ejection mechanism pushes out the casting, and the molten metal is directly injected and injected after the mold is closed, which reduces the waiting time and improves the production efficiency. The injection action follows up quickly, which can effectively reduce the temperature loss of the molten metal and significantly improve the fluidity. When the punch 62 is injected upward, the molten metal naturally fills the mold cavity, reducing the entanglement of bubbles, and the gas entering the barrel 3 and the mold cavity during the mold opening and soup feeding process tends to float above the liquid, which helps to reduce the porosity of the finished product. The injection hydraulic cylinder 6 is fixedly installed, without the need for a swing mechanism, avoiding wear of the articulated shaft and increasing the service life.

[0021] As a possible implementation of this solution, preferably, the driving device 5 is used to control the moving position of the sealing plug 4, and can be used to control the speed and method of the soup entering the barrel 3, which can be selected and controlled according to on-site requirements.

[0022] As a possible implementation of this scheme, preferably, the sealing plug 4 structure is adapted to the shape of the soup feeding port 31. When it is in a sealed state, it can completely restore the original shape and smoothness of the inner wall of the barrel 3 to improve the smoothness of the metal liquid entering the barrel 3.

[0023] As a possible implementation method of this scheme, preferably, the feed pipe 7 is tilted so that the soup feeding port 31 is at its lowest position, which facilitates the soup to flow completely into the barrel 3 under the action of gravity. The feed pipe 7 is tilted on one side of the drive device 5, which optimizes the spatial layout and avoids conflict with the movement path of the drive mechanism. At the same time, the feed pipe 7 maintains a downward tilt angle to facilitate the molten metal to smoothly enter the barrel 3 by relying on gravity.

[0024] As a possible implementation scheme of the present invention, preferably, guide grooves 32 are provided on both sides of the opening wall of the barrel 3, and guide sliders 41 are provided on both sides of the sealing plug 4 corresponding to the guide grooves 32. By cooperating with the guide grooves 32 and the guide sliders 41, the moving trajectory of the sealing plug 4 can be effectively restricted, the risk of eccentric wear can be reduced, the service life of the sealing plug 4 can be extended, and the accuracy of the opening and closing action can be ensured.

[0025] As a possible implementation of this scheme, preferably, the cross-section of the sealing plug 4 and the shape of the soup feeding port 31 change linearly and continuously in the wall thickness direction to ensure that the sealing plug 4 can move freely inward in its fully closed position, that is, move toward the axis of the barrel 3, but cannot move outward.

[0026] The linearly changing structure limits the possibility of the sealing plug 4 moving outward, avoiding sealing failure caused by vibration or pressure fluctuation. The linear continuously changing structural design balances the sealing reliability and the adaptive adjustment capability.

[0027] As a possible implementation of this solution, preferably, the cross-section of the sealing plug 4 and the shape of the soup feeding port 31 change in a step-like manner in the wall thickness direction, limiting the extreme position of the outward movement of the sealing plug 4 in a step form, and accurately positioning the sealing state.

[0028] The step structure provides a clear outward limit position for the sealing plug 4 (the sealing state is reached when the step surfaces are in contact), avoiding overpressure or insufficient sealing due to errors in the driving device 5; the rigid contact of the step surface can withstand the reverse pressure when the soup is ejected from the barrel 3, preventing the sealing plug 4 from moving outward.

[0029] As a possible implementation of the present scheme, preferably, the cross-section of the sealing plug 4 is rectangular or trapezoidal, and the sealing plug 4 is provided with a guide surface 42 on the side close to the soup inlet 31. The shape and inclination angle of the guide surface 42 are used to guide the molten metal so that the molten metal enters the barrel 3 more smoothly.

[0030] As a possible implementation of this scheme, preferably, a mounting port 11 is opened on the fixed template 1, and the feed pipe 7 is arranged through the mounting port 11, so that the feed pipe 7 can be directly fixed through the fixed template 1, which simplifies the installation process, avoids interference problems caused by exposed pipes, and improves the compactness of the equipment.

[0031] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various modifications or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A vertical ladling die casting device, characterized in that: The invention comprises a fixed template (1) and a mold (2) installed on the fixed template (1), wherein a barrel (3) is installed in the fixed template (1), and the barrel (3) passes through the fixed template (1) and is installed below the mold (2), a soup feeding port (31) is provided on one side of the barrel (3), a sealing plug (4) is installed at the soup feeding port (31), a feeding pipe (7) is provided on the side of the soup feeding port (31) opposite to the sealing plug (4), a driving device (5) is provided on the side of the fixed template (1) close to the soup feeding port (31) to control the movement of the sealing plug (4) and realize the opening and closing of the soup feeding port (31), an injection hydraulic cylinder (6) is provided below the fixed template (1), a punch rod (61) is provided inside the injection hydraulic cylinder (6), a punch (62) is provided at one end of the punch rod (61), and the punch (62) is slidably connected to the inner wall of the barrel (3).

2. A vertical ladling die casting device according to claim 1, characterized in that: The driving device (5) is used to control the moving position of the sealing plug (4), and can further be used to control the speed and manner in which the soup material enters the barrel (3).

3. The vertical ladling die-casting device according to claim 1, characterized in that: The structure of the sealing plug (4) is adapted to the shape of the soup feeding port (31), and when in a sealed state, the original shape and smoothness of the inner wall of the barrel (3) can be completely restored.

4. The vertical ladling die-casting device according to claim 1, characterized in that: The feed pipe (7) is tilted so that the soup inlet (31) is at its lowest position, facilitating the complete flow of the soup into the barrel (3) under the action of gravity.

5. The vertical ladling die-casting device according to claim 1, characterized in that: Guide grooves (32) are provided on both sides of the opening wall of the barrel (3), and guide slide blocks (41) are provided on both sides of the sealing plug (4) corresponding to the guide grooves (32).

6. The vertical ladling die casting device according to claim 1, characterized in that: The cross section of the sealing plug (4) and the shape of the soup feeding port (31) vary linearly and continuously in the wall thickness direction, so as to ensure that the sealing plug (4) can freely move inward, i.e., toward the axis of the barrel (3), but cannot move outward in its fully closed position.

7. The vertical ladling die-casting device according to claim 1, characterized in that: The cross section of the sealing plug (4) and the shape of the soup feeding port (31) change in a step-like manner in the wall thickness direction, limiting the extreme position of the outward movement of the sealing plug (4) in a step-like manner, and accurately positioning the sealing state.

8. The vertical ladling die-casting device according to claim 1, characterized in that: A flow guide surface (42) is provided on the side of the sealing plug (4) close to the soup feeding port (31).

9. The vertical ladling die-casting device according to claim 1, characterized in that: The fixed template (1) is provided with a mounting opening (11), and the feed pipe (7) is arranged through the mounting opening (11).

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