Aluminum alloy die-casting die for front end cover

Abstract

The utility model discloses a front end cover aluminum alloy die-casting die, which belongs to the technical field of aluminum alloy die-casting and comprises a lower die-casting die, an upper die-casting die and a jacking stripping component arranged in the lower die-casting die. The jacking and stripping assembly comprises a jacking bearing plate arranged in a die cavity of the lower die-casting die, an extrusion groove formed in the lower portion of the inner wall of the die cavity and a release agent extrusion opening formed in the upper portion of the inner wall of the die cavity and formed above the extrusion groove, and the extrusion air bag extracts a release agent in a release agent barrel through a liquid inlet pipe and outputs the release agent to the release agent extrusion opening through a through pipe; a release agent is output into the mold cavity through the release agent extrusion port, and the release agent is matched to lubricate the position, abutting against the front end cover in the mold cavity in a die-casting mode, of the front end cover, so that the front cover plate is jacked and demolded from the mold cavity conveniently through the jacking bearing plate, and the purpose that when the front end cover is jacked and demolded from the mold cavity, the front cover plate is not damaged is achieved. And the problem of demolding deformation caused by abutting and jacking of the outer edge of the front end cover and the inner wall of the mold cavity is avoided, so that the yield of die-casting demolding of the front end cover is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum alloy die-casting, and in particular relates to an aluminum alloy die-casting mold for a front end cover. Background Art

[0002] Die casting is a metal casting process, which refers to a casting method in which molten alloy melt is filled into the mold cavity under high pressure and high speed conditions, and then cooled and formed under high pressure. After the product is die-cast, the die-cast product in the die-casting mold cavity is ejected by the ejector device in conjunction with the ejector plate;

[0003] When the front end cover is die-casted by the die-casting mold, the die-cast surface of the front end cover is not flat because the front end cover needs to be assembled and protected with the assembled equipment. Therefore, when the front end cover product is die-casted, the front end cover is die-casted in the mold cavity by the mold, and there are many corners where the front end cover fits with the mold cavity. After the front end cover is die-cast, the outer wall of the product fits tightly with the inner wall of the mold cavity, and is in a close-fitting state;

[0004] When the ejection device ejects the front end cover, the outer edge of the front end cover is tightly fixed to the inner wall of the mold cavity. When the ejection device ejects the front end cover, there is a problem that the product is deformed by the lifting force of the ejection device due to the tight contact between the front end cover and the inner wall of the mold cavity, thereby reducing the yield rate and efficiency of the die-casting molding of the product;

[0005] Therefore, the utility model provides a front end cover aluminum alloy die-casting mold which can keep the front end cover in the mold cavity and be stably ejected and discharged. Utility Model Content

[0006] The utility model aims to provide a front end cover aluminum alloy die-casting mold to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A front end cover aluminum alloy die-casting mold, comprising a die-casting lower mold, a die-casting upper mold and a jacking and stripping assembly arranged in the die-casting lower mold, and the die-casting upper mold and the die-casting lower mold are opened or closed by a hydraulic rod for die-casting;

[0009] A mold release agent injection pipe on the outer wall of the die-casting lower mold is connected with a mold release agent cylinder;

[0010] The lifting and stripping assembly comprises a lifting and bearing plate arranged in the die cavity of the die-casting lower die, an extrusion groove arranged at the lower part of the inner wall of the die cavity, and a demoulding agent extrusion port arranged at the upper part of the inner wall of the die cavity and above the extrusion groove;

[0011] The extrusion airbag inside the extrusion groove is connected to the release agent barrel through the liquid inlet pipe, and the negative pressure generated by the liquid inlet pipe is used to extract the release agent in the release agent barrel. The output end of the liquid inlet pipe is connected to the through pipe inside the release agent extrusion port.

[0012] Furthermore, the four corners of the upper top surface of the die-casting lower die are respectively provided with guide grooves for receiving the four corner guide blocks at the bottom end of the die-casting upper die, and the guide grooves are in an inverted trapezoidal shape.

[0013] Furthermore, the lifting and stripping assembly also includes a hydraulic push rod arranged at the bottom end of the lifting bearing plate, and the top end of the hydraulic push rod is fixed to a balance plate in the middle of the bottom surface of the lifting bearing plate.

[0014] Furthermore, the lifting and stripping assembly also includes two rubber buffer plates, and the two rubber buffer plates are respectively arranged at two opposite ends of the bottom surface of the lifting bearing plate.

[0015] Furthermore, a soft rubber baffle plate which is on the same plane as the inner wall of the mold cavity is provided on the outer wall of the extrusion groove, and a rubber convex edge which presses against the soft rubber baffle plate is provided on the outer wall of the lifting bearing plate.

[0016] Furthermore, the outlet end of the release agent extrusion port is provided with a one-way output pad which is on the same plane as the inner wall of the mold cavity.

[0017] The utility model has the following technical effects and advantages:

[0018] The aluminum alloy die-casting mold for the front end cover is provided with a jacking and stripping assembly connected to a demoulding agent barrel in the die cavity of the die-casting lower die, so that when the jacking bearing plate on the jacking and stripping assembly moves upward in the die cavity through the cooperation of the hydraulic ejector at the bottom, the outer edge of the jacking bearing plate is clamped into the extrusion groove of the inner wall of the die cavity when moving upward, and negative pressure is generated on the extrusion airbag in the extrusion groove. The extrusion airbag extracts the demoulding agent in the demoulding agent barrel through the liquid inlet pipe and outputs it to the demoulding agent extrusion port through the through pipe, and outputs the demoulding agent to the die cavity through the demoulding agent extrusion port, and the demoulding agent cooperates to lubricate the position where the front end cover and the die casting in the die cavity are tightly pressed, so that it is convenient for the jacking and stripping of the front cover plate from the die cavity by the jacking bearing plate;

[0019] When the front end cover is lifted and demolded from the mold cavity, the problem of the outer edge of the front end cover being pressed against the inner wall of the mold cavity and causing the mold release deformation is avoided, thereby improving the yield rate of the die-casting demolding of the front end cover;

[0020] The front end cover aluminum alloy die-casting mold has a rubber convex edge on the outer wall of the jacking bearing plate. When the rubber convex edge moves up or down in the mold cavity as the jacking bearing plate moves up or down, it presses against the soft rubber baffle in the extrusion groove, and the soft rubber baffle produces an effect of squeezing and extracting the demoulding agent on the extrusion airbag, thereby squeezing the demoulding agent into the mold cavity before die-casting the product, and then achieving the effect of facilitating the demoulding of the product by re-cooperating with the demoulding agent when demoulding the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the die-casting lower die of the utility model;

[0023] Figure 3 For this utility model Figure 2 Schematic diagram of the main cross-sectional structure;

[0024] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 It is a schematic diagram of the bottom structure of the lifting load-bearing plate of the utility model.

[0026] In the figure: 1. die-casting lower die; 2. die-casting upper die; 3. jacking and stripping assembly; 4. hydraulic rod; 5. release agent injection tube; 6. release agent cylinder; 7. mold cavity; 8. jacking bearing plate; 9. extrusion groove; 10. release agent extrusion port; 11. extrusion airbag; 12. liquid inlet pipe; 13. through pipe; 14. guide groove; 15. hydraulic ejector rod; 16. balance plate; 17. rubber buffer plate; 18. soft rubber baffle; 19. rubber flange. DETAILED DESCRIPTION

[0027] 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.

[0028] The utility model provides Figure 1-5 The aluminum alloy die-casting mold for the front end cover shown in the figure comprises a die-casting lower mold 1, a die-casting upper mold 2 and a jacking and stripping assembly 3 arranged in the die-casting lower mold 1. The die-casting upper mold 2 and the die-casting lower mold 1 are matched with each other through a hydraulic rod 4 for die-casting by opening or closing the mold. The four corners of the upper top surface of the die-casting lower mold 1 are respectively provided with guide grooves 14 for receiving the guide blocks at the four corners of the bottom end of the die-casting upper mold 2. The guide grooves 14 are in an inverted trapezoidal shape. The guide grooves 14 are used to guide and dock the die-casting upper mold 2 when the die-casting lower mold 1 moves downward;

[0029] The release agent injection pipe 5 on the outer wall of the die-casting lower mold 1 is connected to a release agent cylinder 6;

[0030] The lifting and stripping assembly 3 comprises a lifting bearing plate 8 arranged in the die cavity 7 on the die casting lower die 1, and an extrusion groove 9 arranged at the lower part of the inner wall of the die cavity 7. A soft rubber baffle 18 is arranged on the outer wall of the extrusion groove 9 on the same plane as the inner wall of the die cavity 7. A rubber convex edge 19 is arranged on the outer wall of the lifting bearing plate 8 for pressing against the soft rubber baffle 18. The rubber convex edge 19 is arranged on the outer wall of the lifting bearing plate 8. When the rubber convex edge 19 moves up or down in the die cavity 7 as the lifting bearing plate 8 moves up or down, the soft rubber baffle 18 in the extrusion groove 9 is pressed, and the extrusion airbag 11 is squeezed and extracted by the soft rubber baffle 18, so as to squeeze the release agent into the die cavity 7 before die casting the product, and then to facilitate the demolding of the product by cooperating with the release agent again when the product is demolded;

[0031] The lifting and stripping assembly 3 also includes a release agent extrusion port 10 disposed on the upper part of the inner wall of the mold cavity 7 and above the extrusion groove 9. The outlet end of the release agent extrusion port 10 is provided with a one-way output pad on the same plane as the inner wall of the mold cavity 7. The one-way output pad cooperates with the release agent extrusion port 10 to keep the inner wall of the mold cavity 7 on the same plane while the release agent is extruded, so as to keep the front end cover neatly die-cast.

[0032] The lifting and stripping assembly 3 also includes a hydraulic push rod 15 disposed at the bottom end of the lifting bearing plate 8, the top end of the hydraulic push rod 15 is fixed to a balance plate 16 in the middle of the bottom surface of the lifting bearing plate 8, and the balance plate 16 is used to cooperate with the lifting bearing plate 8 to stabilize the connection between the lifting bearing plate 8 and the top end of the hydraulic push rod 15 when the lifting bearing plate 8 is lifted in the mold cavity 7 by the hydraulic push rod 15, so as to keep the lifting bearing plate 8 being braked by the hydraulic push rod 15 to stably move up or down;

[0033] The lifting and stripping assembly 3 also includes two rubber buffer plates 17, which are respectively arranged at the opposite ends of the bottom surface of the lifting load-bearing plate 8. The rubber buffer plates 17 are used to cooperate with the lifting load-bearing plate 8 to support the front end cover, and when the die-casting upper mold 2 moves downward to die-cast the product, the die-casting upper mold 2 and the die-casting lower mold 1 are connected to perform die-casting buffering.

[0034] The extrusion air bag 11 inside the extrusion groove 9 is connected to the release agent barrel 6 through the liquid inlet pipe 12, and the negative pressure generated by the liquid inlet pipe 12 is used to extract the release agent in the release agent barrel 6. The output end of the liquid inlet pipe 12 is connected to the through pipe 13 inside the release agent extrusion port 10;

[0035] The front end cover aluminum alloy die-casting mold has a jacking and stripping component 3 connected to a demoulding agent barrel 6 in the die cavity 7 of the die-casting lower die 1, so that when the jacking bearing plate 8 on the jacking and stripping component 3 moves upward in the die cavity 7 through the hydraulic ejector rod 15 at the bottom, the outer edge of the jacking bearing plate 8 is stuck in the extrusion groove 9 on the inner wall of the die cavity 7 when moving upward, and a negative pressure is generated on the extrusion airbag 11 in the extrusion groove 9. The extrusion airbag 11 extracts the demoulding agent in the demoulding agent barrel 6 through the liquid inlet pipe 12 and outputs it to the demoulding agent extrusion port 10 through the through pipe 13, and outputs the demoulding agent to the die cavity 7 through the demoulding agent extrusion port 10, and the demoulding agent cooperates to lubricate the position where the front end cover and the die cavity 7 are pressed against each other, so as to facilitate the jacking and demoulding of the front cover plate from the die cavity 7 by the jacking bearing plate 8;

[0036] The problem of the front end cover being deformed by demoulding due to the outer edge of the front end cover pressing against the inner wall of the mold cavity 7 when the front end cover is lifted from the mold cavity 7 is avoided, thereby improving the yield rate of die-casting demoulding of the front end cover.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A front end cover aluminum alloy die-casting mold, comprising a die-casting lower mold (1), a die-casting upper mold (2), and a jacking and stripping assembly (3) arranged in the die-casting lower mold (1), wherein the die-casting upper mold (2) and the die-casting lower mold (1) are matched to open or close the mold for die-casting through a hydraulic rod (4), and characterized in that: A mold release agent injection pipe (5) on the outer wall of the die-casting lower mold (1) is connected to a mold release agent cylinder (6); The lifting and stripping assembly (3) comprises a lifting and supporting plate (8) arranged in a die cavity (7) on a die-casting lower die (1), an extrusion groove (9) arranged at the lower part of the inner wall of the die cavity (7), and a demoulding agent extrusion port (10) arranged at the upper part of the inner wall of the die cavity (7) and above the extrusion groove (9); The extrusion air bag (11) inside the extrusion groove (9) is connected to the demoulding agent cylinder (6) through the liquid inlet pipe (12), and the demoulding agent in the demoulding agent cylinder (6) is extracted by generating negative pressure through the liquid inlet pipe (12), and the output end of the liquid inlet pipe (12) is connected to the through pipe (13) inside the demoulding agent extrusion port (10).

2. The aluminum alloy die-casting mold for the front end cover according to claim 1, characterized in that: The four corners of the upper top surface of the die-casting lower die (1) are respectively provided with guide grooves (14) for receiving the four corner guide blocks at the bottom end of the die-casting upper die (2), and the guide grooves (14) are in an inverted trapezoidal shape.

3. The aluminum alloy die-casting mold for the front end cover according to claim 1, characterized in that: The lifting and stripping assembly (3) also includes a hydraulic push rod (15) arranged at the bottom end of the lifting bearing plate (8), and the top end of the hydraulic push rod (15) is fixed to a balance plate (16) in the middle of the bottom surface of the lifting bearing plate (8).

4. The aluminum alloy die-casting mold for the front end cover according to claim 3, characterized in that: The lifting and stripping assembly (3) further comprises two rubber buffer plates (17), and the two rubber buffer plates (17) are respectively arranged at two opposite ends of the bottom surface of the lifting bearing plate (8).

5. The aluminum alloy die-casting mold for the front end cover according to claim 1, characterized in that: The outer wall of the extrusion groove (9) is provided with a soft rubber baffle (18) on the same plane as the inner wall of the mold cavity (7), and the outer wall of the lifting bearing plate (8) is provided with a rubber convex edge (19) for pressing against the soft rubber baffle (18).

6. The aluminum alloy die-casting mold for the front end cover according to claim 5, characterized in that: The outlet end of the release agent extrusion port (10) is provided with a one-way output pad which is on the same plane as the inner wall of the mold cavity (7).

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