A kind of aluminum alloy semi-solid extrusion die with fast demoulding

Abstract

The utility model discloses a semi-solid extrusion die of aluminum alloy with fast demoulding, characterized in that it comprises a lower die, an upper die and a cavity, the lower die is movably connected with the upper die, the cavity is movably connected with the lower die, and a fixture assembly is arranged inside the lower die, and relates to the technical field of semi-solid extrusion dies. In the utility model, since the connecting rod and the roller are arranged inside the accommodating main cavity, a part of the outer circumference of the roller actually protrudes from the accommodating main cavity and enters into the accommodating space where the cavity contacts the lower die, and the demoulding speed of the cavity and the lower die can be accelerated by the roller during the demoulding process of the cavity and the lower die, so as to achieve a fast demoulding effect. The setting of the spring can make the roller shrink into the accommodating main cavity after being squeezed by the cavity, but due to the free expansion and contraction characteristics of the spring, the roller can realize the movable function of the roller under the premise of realizing the demoulding ability of the cavity, so that the roller does not excessively occupy the space where the cavity and the lower die are combined, and a certain processing accuracy of the cavity is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-solid extrusion dies, in particular to an aluminum alloy semi-solid extrusion die with fast demoulding. Background Art

[0002] Semi-solid extrusion die is a die used for semi-solid metal processing, mainly including a shot hammer and a secondary inner cavity extrusion (forging) forming punch. The design of this die helps to achieve high-quality extrusion casting parts. During operation, the shot hammer is fixed in the barrel of the shot mechanism and connected to the piston of the shot cylinder. When the barrel is docked with the gate sleeve of the lower die seat, the shot program is started, and the shot cylinder will push the shot hammer to press the metal liquid in the barrel into the cavity. There is a certain amount of material cake between the shot hammer and the formed workpiece. This bottom-up shot design is conducive to exhaust and prevents the air in the pressure chamber from being drawn into the metal liquid, thereby improving the quality of the extrusion casting parts.

[0003] For example, the patent with publication number CN213409861U discloses an aluminum alloy semi-solid extrusion die, which realizes the technical effect of "the buffer protection structure wraps the side wall of the temperature sensor through the protective cover, and through the setting of the connecting block, the connecting column, the buffer spring and the buffer connecting plate, the buffer connecting plate is arranged opposite to the bottom plate of the cavity, thereby improving the buffer protection performance of the temperature sensor to a certain extent".

[0004] However, this patent only provides buffer protection for the temperature sensor during use. In actual use, since the semi-solid extrusion die is formed by the injection hammer head and secondary inner cavity extrusion (forging) to form the punch and other components, it is more difficult to remove the mold, and there is room for improvement. Summary of the invention

[0005] The utility model aims to provide a semi-solid aluminum alloy extrusion die with rapid demoulding, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-solid extrusion die of aluminum alloy with fast demolding, characterized in that it includes a lower die, an upper die and a cavity, the lower die is movably connected to the upper die, the cavity is movably connected to the lower die, a fixture assembly is arranged inside the lower die, a connecting rod and a roller are arranged inside the fixture assembly, the roller is rotatably connected to the connecting rod, and the cavity is movably connected to the roller.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] As a further solution of the utility model: the interior of the lower mold is provided with a main accommodating cavity and a sub-cavity; the interior of the sub-cavity is fixedly connected with a fixing rod; both ends of the connecting rod are fixedly connected with mounting seats; the mounting seats are movably connected to the fixing rod; through the movable connection between the mounting seat and the fixing rod, the position of the roller can be adjusted, the extrusion degree of the roller and the cavity can be changed, and the cavity can be adjusted to adapt to the processing requirements of the equipment.

[0009] As a further solution of the utility model: one end of the mounting seat is fixedly connected to a spring, and the end of the spring away from the mounting seat is fixedly connected to the accommodating sub-cavity, so that the roller is reset after moving through the expansion and contraction characteristics of the spring, thereby reducing the displacement deviation of the cavity and improving the processing accuracy of the cavity while ensuring the picking function of the cavity.

[0010] As a further solution of the utility model: a handle is fixedly connected to the inside of the cavity, and an anti-slip pattern is provided on the outside of the handle. The embedded handle facilitates the lifting of the cavity, further ensuring the demoulding efficiency of the cavity.

[0011] As a further solution of the utility model: the outer side of the lower mold is fixedly connected to a limit rod, the outer side of the upper mold is fixedly connected to a limit seat, the limit seat is movably connected to the limit rod, and the accuracy of movement of the lower mold and the upper mold is guaranteed by the movably connected limit seat and the limit rod.

[0012] As a further solution of the utility model: the limit seats and limit rods are each provided in two groups, the limit rods are provided on both sides of the lower mold and are 180° apart, and the limit seats are provided on both sides of the upper mold and are 180° apart. The stability of the movement of the lower mold and the upper mold is ensured by the limit seats and limit rods provided on both sides.

[0013] In summary, the main beneficial effects of the utility model are:

[0014] 1. Since the connecting rod and the roller are arranged inside the accommodating main cavity, a part of the outer circumference of the roller actually protrudes from the accommodating main cavity and enters the accommodating space where the cavity and the lower mold contact. During the demolding process of the cavity and the lower mold, the demolding speed of the cavity and the lower mold can be accelerated by the roller, thereby achieving a rapid demolding effect;

[0015] 2. The setting of the spring allows the roller to shrink into the main cavity after being squeezed by the cavity. However, due to the free expansion and contraction characteristics of the spring, the roller can also realize its movable function while realizing the demoulding ability of the cavity, so that the roller does not excessively occupy the space where the cavity and the lower mold are combined, thereby ensuring a certain processing accuracy of the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the utility model;

[0017] Figure 2 It is an assembly diagram of the lower die and the fixture assembly in the embodiment of the utility model;

[0018] Figure 3 This is a structural schematic diagram of a clamp assembly in an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mold cavity in the embodiment of the utility model;

[0020] In the figure: 1, lower mold; 11, main cavity; 12, sub-cavity; 2, upper mold; 3, cavity; 31, handle; 4, limit seat; 5, limit rod; 6, fixture assembly; 61, connecting rod; 62, roller; 63, mounting seat; 64, fixing rod; 65, spring. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of the embodiments of the present utility model based on the overall structure of the present utility model.

[0023] In an embodiment of the utility model, a semi-solid extrusion die of aluminum alloy with rapid demolding is provided, characterized in that it comprises a lower die 1, an upper die 2 and a cavity 3, wherein the lower die 1 is movably connected to the upper die 2, the cavity 3 is movably connected to the lower die 1, a fixture assembly 6 is arranged inside the lower die 1, a connecting rod 61 and a roller 62 are arranged inside the fixture assembly 6, the roller 62 is rotatably connected to the connecting rod 61, and the cavity 3 is movably connected to the roller 62.

[0024] See also Figure 1 , Figure 2 and Figure 3 Since the connecting rod 61 and the roller 62 are arranged inside the main cavity 11, a part of the outer circumference of the roller 62 actually protrudes from the main cavity 11 and enters into the accommodating space where the cavity 3 and the lower mold 1 are in contact. During the demolding process of the cavity 3 and the lower mold 1, the roller 62 can accelerate the demolding speed of the cavity 3 and the lower mold 1 to achieve a quick demolding effect.

[0025] As other embodiments of the utility model: the interior of the lower mold 1 is provided with a main accommodating cavity 11 and a sub-accommodating cavity 12, the interior of the sub-accommodating cavity 12 is fixedly connected with a fixing rod 64, both ends of the connecting rod 61 are fixedly connected with a mounting seat 63, and the mounting seat 63 is movably connected to the fixing rod 64.

[0026] See also Figure 3Since the roller 62 is movably connected to the connecting rod 61, both ends of the connecting rod 61 are fixedly connected to the mounting seat 63, and the mounting seat 63 is movably connected to the fixing rod 64, the spatial position of the roller 62 in the accommodating main cavity 11 can be changed during use through the movably connected effect of the mounting seat 63 and the fixing rod 64, thereby changing the demoulding difficulty of the cavity 3 and the tightness of the contact between the cavity 3 and the lower mold 1. Specifically,

[0027] When the mounting seat 63 moves on the fixing rod 64 and drives the roller 62 to be more hidden in the accommodating main cavity 11, the roller 62 protrudes less from the accommodating cavity 3. At this time, the contact area between the roller 62 and the cavity 3 is small, while the contact area between the cavity 3 and the lower mold 1 is large. In this state, the firmness of the cavity 3 and the lower mold 1 is good, but the demoulding convenience is lost, which is suitable for manufacturing a more precise semi-solid mold.

[0028] On the contrary, when the contact area between the roller 62 and the accommodating cavity 3 is large, the contact area between the cavity 3 and the lower mold 1 is reduced but the demoulding speed is guaranteed, which is suitable for the rapid manufacturing requirements of semi-solid molds.

[0029] As another embodiment of the present invention: one end of the mounting seat 63 is fixedly connected to a spring 65 , and one end of the spring 65 away from the mounting seat 63 is fixedly connected to the accommodating sub-cavity 12 .

[0030] See also Figure 2 and Figure 3 Through the setting of spring 65, roller 62 can be squeezed by cavity 3 and retracted into main cavity 11. However, due to the free expansion and contraction property of the spring, roller 62 can realize the movable function of roller 62 while realizing the demoulding ability of cavity 3, so that roller 62 does not excessively occupy the space where cavity 3 and lower mold 1 are combined, thereby ensuring a certain processing accuracy of cavity 3.

[0031] As another embodiment of the utility model: a handle 31 is fixedly connected to the inside of the cavity 3 , and an anti-slip pattern is arranged on the outside of the handle 31 .

[0032] See also Figure 4 The handle 31 is hidden inside the cavity 3. This structure will not affect the work during the closing process of the upper mold 2 and the lower mold 1. The handle 31 is distributed in a circular array outside the cavity 3, so it is convenient to take it from all directions.

[0033] As other embodiments of the present utility model: the outer side of the lower mold 1 is fixedly connected to the limiting rod 5 , the outer side of the upper mold 2 is fixedly connected to the limiting seat 4 , and the limiting seat 4 is movably connected to the limiting rod 5 .

[0034] See also Figure 1By setting the limiting seat 4 and the limiting rod 5, the relative accuracy of the activities can be maintained during the activities of the lower mold 1 and the upper mold 2.

[0035] As other embodiments of the utility model: the limit seat 4 and the limit rod 5 are provided in two groups, the limit rod 5 is arranged on both sides of the lower mold 1 and is 180°, and the limit seat 4 is arranged on both sides of the upper mold 2 and is 180°.

[0036] See also Figure 1 The limit seat 4 and the limit rod 5 are symmetrically arranged to improve the activity stability of the limit seat 4 and the limit rod 5.

[0037] The working principle of the utility model is: the application can make the roller 62 shrink into the accommodating main cavity 11 after being squeezed by the cavity 3 through the setting of the spring 65, but due to the free expansion and contraction property of the spring, the roller 62 can also realize the movable function of the roller 62 on the premise of realizing the demoulding ability of the cavity 3, so that the roller 62 does not excessively occupy the space where the cavity 3 and the lower mold 1 are combined, thereby ensuring a certain processing accuracy of the cavity 3.

[0038] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A semi-solid extrusion die for aluminum alloy with fast demoulding, characterized in that , comprising a lower die (1), an upper die (2) and a cavity (3), wherein the lower die (1) is movably connected to the upper die (2), the cavity (3) is movably connected to the lower die (1), a fixture assembly (6) is provided inside the lower die (1), a connecting rod (61) and a roller (62) are provided inside the fixture assembly (6), the roller (62) is rotatably connected to the connecting rod (61), and the cavity (3) is movably connected to the roller (62).

2. The aluminum alloy semi-solid extrusion die with rapid demoulding according to claim 1, characterized in that: The lower mold (1) is provided with a main accommodating cavity (11) and a sub-accommodating cavity (12). A fixing rod (64) is fixedly connected to the interior of the sub-accommodating cavity (12). Both ends of the connecting rod (61) are fixedly connected to mounting seats (63). The mounting seats (63) are movably connected to the fixing rod (64).

3. The aluminum alloy semi-solid extrusion die with rapid demoulding according to claim 2, characterized in that: One end of the mounting seat (63) is fixedly connected to a spring (65), and one end of the spring (65) away from the mounting seat (63) is fixedly connected to the accommodating sub-cavity (12).

4. The aluminum alloy semi-solid extrusion die with rapid demoulding according to claim 1, characterized in that: A handle (31) is fixedly connected to the interior of the cavity (3), and anti-slip grooves are arranged on the outside of the handle (31).

5. The aluminum alloy semi-solid extrusion die with rapid demoulding according to claim 1, characterized in that: The outer side of the lower die (1) is fixedly connected to a limit rod (5), the outer side of the upper die (2) is fixedly connected to a limit seat (4), and the limit seat (4) is movably connected to the limit rod (5).

6. The aluminum alloy semi-solid extrusion die with rapid demoulding according to claim 5, characterized in that: The limiting seats (4) and limiting rods (5) are each provided in two groups. The limiting rods (5) are provided on both sides of the lower mold (1) at an angle of 180°, and the limiting seats (4) are provided on both sides of the upper mold (2) at an angle of 180°.

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