Vertical aluminum alloy counter-pressure casting machine adopting elbow die opening and closing mechanism

Abstract

The utility model relates to a vertical aluminum alloy counter-pressure casting machine adopting an elbow opening and closing die mechanism. The vertical aluminum alloy counter-pressure casting machine comprises a hydraulic oil cylinder, a fixed bedplate, an upper die plate, a die sealing tank, a guide stand column, a lower die plate and an elbow mechanism, a guide stand column is arranged above the lower die plate, and the upper die plate can move up and down on the guide stand column. A mold sealing tank fixed with the upper mold plate is arranged between the upper mold plate and the lower mold plate; the toggle mechanism comprises a fixed static seat plate, a fixed movable seat plate and a toggle connecting rod; the fixed static seat plate is mounted on a fixed bedplate of the counter-pressure casting machine, the fixed movable seat plate is mounted on an upper template, and the fixed static seat plate and the fixed movable seat plate are connected through a toggle connecting rod; the hydraulic oil cylinder is mounted on the fixed bedplate; a piston rod of the hydraulic oil cylinder is connected with a toggle connecting rod of the toggle mechanism; the toggle connecting rod is driven by the piston rod, so that the fixed movable seat plate is driven to move up and down; the toggle mechanism comprises an opening state in which the piston rod stretches out and a folding state in which the piston rod retracts.

Description

Technical Field

[0001] The utility model belongs to the technical field of differential pressure casting machines, and is particularly suitable for a vertical aluminum alloy differential pressure casting machine adopting an elbow mold opening and closing mechanism. Background Art

[0002] The existing vertical aluminum alloy differential pressure casting machines mainly consist of a lower mold plate, an upper mold plate, a mold sealing tank, a material receiving mechanism, a fixed table, a guide column, a demoulding and punching mechanism, an upper mold hydraulic drive mechanism, an inclined wedge type main locking mechanism, etc. Among them, the upper mold hydraulic drive mechanism adopts a hydraulic cylinder to directly connect the upper mold plate, and drives the upper mold plate to close the mold through the extension and contraction of the hydraulic cylinder piston rod. After the mold is closed, the independent inclined wedge type main locking mechanism locks the upper mold plate under the push of the main lock hydraulic cylinder to prevent the reaction force during filling and pressurization from causing the mold to lift and close the mold tightly.

[0003] The hydraulic drive mechanism of the upper mold of the above-mentioned existing aluminum alloy differential pressure casting machine has a slow speed and a small mold clamping force; the upper mold must rely on an independent inclined wedge type main locking mechanism to prevent rebound in order to achieve self-locking after mold clamping. The inclined wedge type mechanism must rely on the interaction of steel inclined surfaces to generate a downward locking force. The sliding friction of the steel inclined surface is easy to wear. After running for a period of time, the locking force will be reduced due to the wear of the inclined wedge. Summary of the invention

[0004] In view of the above technical problems, the utility model discloses a vertical aluminum alloy differential pressure casting machine adopting an elbow mold opening and closing mechanism. In particular, to address the problems of the traditional upper mold hydraulic drive mechanism and the inclined wedge type main locking mechanism, the utility model adopts a new elbow mold opening and closing mechanism to replace the original hydraulic cylinder directly driving the upper mold plate structure, and eliminates the inclined wedge type main locking mechanism of the traditional aluminum alloy differential pressure casting machine.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a vertical aluminum alloy differential pressure casting machine adopting an elbow mold opening and closing mechanism, comprising a hydraulic cylinder, a fixed table, an upper template, a mold sealing tank, a guide column, a lower template, and an elbow mechanism; a guide column is arranged above the lower template, and the upper template can move up and down on the guide column; a mold sealing tank fixed to the upper template is arranged between the upper template and the lower template; the elbow mechanism comprises a fixed static seat plate, a fixed dynamic seat plate, and an elbow connecting rod; the fixed static seat plate is installed on the fixed table plate of the differential pressure casting machine, the fixed dynamic seat plate is installed on the upper template, and the fixed static seat plate and the fixed dynamic seat plate are connected by an elbow connecting rod; the hydraulic cylinder is installed on the fixed table plate, and the piston rod of the hydraulic cylinder is connected to the elbow connecting rod of the elbow mechanism; the elbow connecting rod is driven by the piston rod, thereby driving the fixed dynamic seat plate to move up and down; the elbow mechanism includes an open state in which the piston rod is extended, and a folded state in which the piston rod is retracted.

[0006] Furthermore, the toggle link includes a first toggle link, a second toggle link, and a third toggle link; the first toggle link is L-shaped, and the upper end is rotationally connected to the fixed static seat plate; a rotating shaft is respectively arranged on both sides of the lower end, the outer rotating shaft is rotationally connected to one end of the third toggle link, and the inner rotating shaft is rotationally connected to one end of the second toggle link; the other end of the third toggle link is rotationally connected to the fixed dynamic seat plate, and the other end of the second toggle link is fixed on the piston rod.

[0007] When the piston rod of the hydraulic cylinder 1 extends, the connecting rod of the toggle mechanism drives the connecting rod and the connecting rod to unfold and push the upper template down. When the upper template drops to the set height and the mold sealing tank is completely closed, the connecting rod, connecting rod and connecting rod of the toggle mechanism are fully opened. According to the principle of lever mechanics, the whole toggle mechanism is in a mechanical self-locking state at this time.

[0008] When the piston rod of hydraulic cylinder 1 contracts, the connecting rod of the toggle mechanism drives the connecting rod, and the connecting rod retracts and drives the upper mold to lift and open the mold and reach the highest point.

[0009] Furthermore, in order to ensure the stability of force transmission of the hydraulic cylinder, a guide rod is provided below the hydraulic cylinder, and the piston rod of the hydraulic cylinder moves up and down along the guide rod.

[0010] Furthermore, in order to ensure stable sealing of the upper mold plate and smooth mold opening, the toggle mechanism is symmetrically arranged on both sides of the hydraulic cylinder.

[0011] Furthermore, it also includes a material receiving mechanism, which is arranged on the outer side of the lower template.

[0012] Furthermore, it also includes a demoulding and punching mechanism, which is arranged above the upper template.

[0013] After the sealed tank is closed and filled with 0.6MPa compressed air, the reaction force generated can reach more than 1200KN. When the toggle mechanism is fully opened, it can resist the reaction force generated by the casting pressurized filling according to the principle of lever mechanics, and it is not easy to cause mold expansion, thus ensuring product quality and work efficiency.

[0014] The utility model discloses a vertical aluminum alloy differential pressure casting machine adopting an elbow mold opening and closing mechanism, which has the following beneficial effects: the mold opening and closing mechanism has a fast speed, a compact structure, good motion characteristics, and no wear caused by sliding friction; the upper mold elbow mold opening and closing mechanism has a good force amplification ratio, a certain stroke ratio, strong rigidity, and its own mechanical self-locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the mold opening of a vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to an embodiment of the utility model.

[0016] Figure 2It is a schematic diagram of the mold closing of a vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to an embodiment of the utility model. DETAILED DESCRIPTION

[0017] To facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings.

[0018] The vertical aluminum alloy differential pressure casting machine using the elbow mold opening and closing mechanism of this embodiment is as follows: Figure 1-2 As shown, it mainly consists of a hydraulic cylinder 1, a fixed platen 2, a demoulding and punching mechanism 3, an upper template 4, a mold sealing tank 5, a guide column 6, a lower template 7, an elbow mechanism 8, a material receiving mechanism 9, etc.

[0019] A guide column 6 is provided above the lower mold plate 7, and the upper mold plate 4 can move up and down on the guide column 6; a mold sealing tank 5 fixed to the upper mold plate 4 is provided between the upper mold plate 4 and the lower mold plate 7; the toggle mechanism 8 includes a fixed static seat plate 8-1, a first toggle connecting rod 8-3, a second toggle connecting rod 8-2, a third toggle connecting rod 8-4, and a fixed movable seat plate 8-5; the fixed static seat plate 8-1 is installed on the fixed table plate 2 of the differential pressure casting machine, the fixed movable seat plate 8-5 is installed on the upper mold plate 4, and the fixed static seat plate 8-1 is installed on the fixed table plate 2 of the differential pressure casting machine, and the fixed movable seat plate 8-5 is installed on the upper mold plate 4. The seat plate 8-1 and the fixed movable seat plate 8-5 are connected by the first toggle link 8-3, the second toggle link 8-2 and the third toggle link 8-4; the hydraulic cylinder 1 is installed on the fixed table plate 2, and the piston rod of the hydraulic cylinder 2 is connected to the second toggle link 8-2 of the toggle mechanism 8; the second toggle link 8-2 is driven by the piston rod to move up and down, thereby driving the fixed movable seat plate 8-5 to move up and down; the toggle mechanism 8 includes an open state in which the piston rod is extended, and a folded state in which the piston rod is retracted.

[0020] When the piston rod of the hydraulic cylinder 1 extends out, the second toggle link 8-2 of the toggle mechanism 8 drives the first toggle link 8-3 and the third toggle link 8-4 to unfold in linkage, pushing the upper template 4 down. When the upper template 4 drops to the set height and the sealing tank 5 is completely closed, the links 8-2, 8-3 and 8-4 of the toggle mechanism 8 are in a fully open state. According to the principle of lever mechanics, the whole toggle mechanism 8 is in a mechanical self-locking state at this time.

[0021] When the piston rod of the hydraulic cylinder 1 contracts, the connecting rod 8-2 of the toggle mechanism 8 drives the connecting rod 8-3 and the connecting rod 8-4 to retract and drive the upper mold to lift and open the mold and reach the highest point.

[0022] In order to ensure the stability of the hydraulic cylinder force transmission, a guide rod is set below the hydraulic cylinder 1, and the piston rod of the hydraulic cylinder 1 moves up and down along the guide rod. In order to ensure the stability of the sealing of the upper template 4 and the smooth mold opening, the toggle mechanism 8 is symmetrically arranged on both sides of the hydraulic cylinder 1. A material receiving mechanism 9 is also set on the outside of the lower template 7. A demoulding and punching mechanism 3 is also set above the upper template 4 for demoulding the mold sealing tank 5, etc.

[0023] The aluminum alloy differential pressure casting machine with new structure has the advantages of fast opening and closing speed, compact structure, good motion characteristics, and no wear caused by sliding friction; the upper mold elbow opening and closing mechanism has a good force amplification ratio, a certain stroke ratio, strong rigidity, and its own mechanical self-locking function. After the sealed tank is closed and filled with 0.6MPa compressed air, the reaction force it generates can reach more than 1200KN. When the elbow mechanism is fully opened, it can resist the reaction force generated by the casting pressurization filling according to the principle of lever mechanics, and it is not easy to produce mold expansion phenomenon, ensuring product quality and work efficiency.

[0024] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism, characterized in that: It includes hydraulic cylinder, fixed platen, upper template, mold sealing tank, guide column, lower template and toggle mechanism; A guide column is provided above the lower template, and the upper template can move up and down on the guide column; A mold sealing tank fixed to the upper template is provided between the upper template and the lower template; The toggle mechanism comprises a fixed static seat plate, a fixed dynamic seat plate, and a toggle connecting rod; The fixed static seat plate is installed on the fixed table of the differential pressure casting machine, the fixed dynamic seat plate is installed on the upper template, and the fixed static seat plate and the fixed dynamic seat plate are connected by a toggle connecting rod; the hydraulic cylinder is installed on the fixed table, and the piston rod of the hydraulic cylinder is connected to the toggle connecting rod of the toggle mechanism; the toggle connecting rod is driven by the piston rod, thereby driving the fixed dynamic seat plate to move up and down; the toggle mechanism includes an open state in which the piston rod is extended, and a folded state in which the piston rod is retracted.

2. The vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to claim 1, characterized in that: The toggle links include a first toggle link, a second toggle link, and a third toggle link; The first toggle link is L-shaped, and the upper end is rotationally connected to the fixed static seat plate; a rotating shaft is respectively arranged on both sides of the lower end, the outer rotating shaft is rotationally connected to one end of the third toggle link, and the inner rotating shaft is rotationally connected to one end of the second toggle link; the other end of the third toggle link is rotationally connected to the fixed moving seat plate, and the other end of the second toggle link is fixed on the piston rod.

3. The vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to claim 1 or 2, characterized in that: A guide rod is arranged below the hydraulic cylinder, and the piston rod of the hydraulic cylinder moves up and down along the guide rod.

4. The vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to claim 1 or 2, characterized in that: The toggle mechanisms are symmetrically arranged on both sides of the hydraulic cylinder.

5. The vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to claim 1, characterized in that: It also includes a material receiving mechanism, which is arranged on the outside of the lower template.

6. The vertical aluminum alloy differential pressure casting machine using an elbow mold opening and closing mechanism according to claim 1, characterized in that: It also includes a demoulding and punching mechanism, which is arranged above the upper template.

Images