A structure for extrusion casting molds for aluminum alloy products

Abstract

The invention relates to the field of aluminum alloy product manufacturing molds, and discloses an aluminum alloy product extrusion casting mold structure, comprising a movable mold assembly, a fixed mold assembly and a slider assembly, wherein the movable mold assembly, the fixed mold assembly and the slider assembly form an aluminum alloy product cavity, and further comprising an oil cylinder assembly fixedly mounted on the movable mold assembly, wherein a driving rod of the oil cylinder assembly is fixedly connected to the slider assembly, the movable mold assembly has a flush riser connection mechanism and an exhaust structure, the slider assembly and the movable mold assembly have a guide structure, and the oil cylinder connection mechanism is configured according to the product structure; through the design of the structure, the extrusion mold has a simple structure and a low manufacturing cost, ensures that the movable mold top mold sliders are positioned with each other, ensures that no flash is generated, ensures that the pressure does not leak, and ensures the mechanical properties of the aluminum alloy product.

Description

Technical Field

[0001] The invention relates to the field of extrusion manufacturing of aluminum alloy products, and in particular to an extrusion casting die for aluminum alloy products. Background Art

[0002] With the development of the automobile industry and the requirements of energy conservation and emission reduction, energy conservation and environmental protection, beautiful appearance, safety and comfort are the main development directions of the automobile industry. Lightweighting of automobiles is an important and effective means of energy conservation and emission reduction. However, lightweighting cannot affect automobile safety. Only by reasonably adopting various lightweight and high structural strength materials and corresponding advanced forming devices and methods can the weight of automobiles be reduced without affecting their safety. Aluminum alloys are playing an increasingly important role in meeting the requirements of lightweight design, high reliability and low cost of automobiles due to their light weight, high specific strength, good processing performance and recyclability.

[0003] Aluminum alloys are used in important parts of automobiles, such as products, steering knuckles, clutch housings, subframes, etc. At present, the production processes of these automobile parts mainly adopt gravity casting, low-pressure casting and differential pressure casting, etc. Although they can achieve mass production, the casting structure strength is low, the performance of complex parts is not good, and it is difficult to meet internal quality requirements, which limits their scope of use. Although the automobile parts produced by forging technology have high performance and light weight, they have low production efficiency and large investment, which limits their scope of use.

[0004] Extrusion presses are now widely used in China. Extrusion casting is a new forming technology that combines casting and forging processes. It is an effective method to achieve high performance, near-net shape and low cost of aluminum alloy materials. It has been industrially applied in many small automotive parts and has played a positive role in significantly improving the yield of parts, reducing production costs, reducing vehicle weight, and saving energy and reducing emissions.

[0005] At the same time, since the extrusion process is to cast aluminum alloy products under high pressure, due to the high pressure, very high requirements are placed on the mold design, and special requirements are placed on the various matching gaps and matching structures. How to ensure that the aluminum liquid does not escape when pressurized.

[0006] Based on the above problems, the technical problem solved by the present invention is to provide an aluminum alloy product extrusion casting mold structure. Summary of the invention

[0007] The technical problem solved by the present invention is to provide an aluminum alloy product extrusion casting die structure suitable for batch extrusion of aluminum alloy products.

[0008] The technical solution adopted by the present invention to solve the technical problem is: an aluminum alloy product extrusion casting mold structure, including a movable mold assembly, a lower fixed mold assembly and a slider assembly, the movable mold assembly, the fixed mold assembly and the slider assembly form a product cavity, and also include a cylinder assembly fixedly installed on the movable mold assembly, the driving rod of the cylinder and the slider assembly are fixedly connected, the upper part of the movable mold assembly is provided with a cut-and-riser connection mechanism that can pass through the movable mold assembly and extend into the product cavity, the bottom of the fixed mold assembly is provided with a barrel, and the barrel is provided with a water-cooling cooling channel. .

[0009] Furthermore, the movable mold assembly includes a movable mold frame and a movable mold core, the movable mold core is fixed on the movable mold frame, the lower fixed mold assembly includes a fixed mold frame and a fixed mold core, the fixed mold core is fixed on the fixed mold frame, the slider assembly includes a slider seat and a slider, the slider is installed on the slider seat, and the fixed mold core, the movable mold core and the slider form the product cavity.

[0010] Furthermore, a wear-resistant block in contact with the slider seat is arranged on the fixed mold frame, and the wear-resistant block cooperates with the inclined surface of the slider seat, and the inclined surface cooperation angle is 18°.

[0011] Furthermore, the sliding block is matched with the movable mold core at an angle of 6°.

[0012] Furthermore, the sliding block is matched with the fixed mold core at an angle of 20°.

[0013] Furthermore, the movable mold core and the fixed mold core are matched at an angle of 20°.

[0014] Furthermore, the fixed mold frame and the movable mold frame are both provided with exhaust plates facing each other, and the fixed mold core and the movable mold core are both provided with exhaust grooves connected to the exhaust plates, so that the exhaust plates are connected to the product cavity through the exhaust grooves.

[0015] Furthermore, the cut-riser connection mechanism includes a push plate, a diverter cone, a diverter cone fixing plate, a connecting head, an I-shaped conversion joint and a punching cylinder connecting rod, one end of the diverter cone is fixed to the push plate through the diverter cone fixing plate, the other end of the diverter cone is used to extend into the product cavity, the I-shaped conversion joint is fixed to the diverter cone fixing plate through the connecting head, and the punching cylinder connecting rod is connected to the I-shaped conversion joint.

[0016] Furthermore, a clamping pin is fixedly connected to the push plate, and a clamping groove cooperating with the clamping pin is arranged on the movable mold frame.

[0017] Furthermore, a water cooling structure is provided on the inner side of the slide block, a heat preservation channel structure is provided in the slide block, a water cooling structure is provided in the movable mold frame, and the barrel is fixed on the fixed mold frame through a barrel pressure plate.

[0018] The beneficial effects of the present invention are as follows: through the design of the present structure, the extrusion die has a simple structure and low manufacturing cost, and ensures that the movable die, the fixed die, and the slider are positioned relative to each other, ensures that no flash is generated, ensures that the pressure does not leak, and ensures the mechanical properties of the aluminum alloy product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a cross-sectional view of a casting mold for aluminum alloy products.

[0020] Figure 2 Schematic diagram of the movable mold assembly.

[0021] Figure 3 Schematic diagram of the fixed mold assembly.

[0022] Figure 4 This is a partial enlarged view of the angle coordination between the slider and the fixed mold core.

[0023] Marked in the figure are: movable mold frame 1, movable mold core 2, fixed mold frame 3, fixed mold core 4, slider seat 5, slider 6, product cavity 7, barrel 8, barrel pressure plate 9, exhaust plate 10, push plate 11, diverter cone 12, diverter cone fixing plate 13, connector 14, I-shaped conversion joint 15, punching cylinder connecting rod 16, clamping pin 17, wear-resistant block 18. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figure 1 The aluminum alloy product extrusion casting mold shown in the figure includes a movable mold assembly, a lower fixed mold assembly and a slider assembly, the movable mold assembly, the fixed mold assembly and the slider assembly form a product cavity 7, and also include a cylinder assembly fixedly installed on the movable mold assembly, the driving rod of the cylinder assembly is fixedly connected to the slider assembly, the upper part of the movable mold assembly is provided with a cutting and rising connection mechanism that can pass through the movable mold assembly and extend into the product cavity 7, the bottom of the fixed mold assembly is provided with a barrel 8, and the barrel 8 is provided with a water-cooling cooling channel, the movable mold assembly includes a movable mold frame 1 and a movable mold core 2, the movable mold core 2 is fixed on the movable mold frame 1, the fixed mold assembly includes a fixed mold frame 3 and a fixed mold core 4, the fixed mold core 4 is fixed on the fixed mold frame 3, the slider assembly includes a slider seat 5 and a slider 6, the slider 6 is installed on the slider seat 5, the fixed mold core 4, the movable mold core 2 and the slider 6 form the product cavity 7, and the movable mold assembly is also provided with a driving Moving mold componentsThe movable mold driving cylinder moves inward and outward. When in use, the movable mold driving cylinder drives the upper movable mold assembly to move downward to close the fixed mold, and then the cylinder driving the slider drives the slider to move inward, so that the fixed mold core 4, the movable mold core 2 and the slider 6 form a product cavity 7. The aluminum liquid is pushed from the barrel 8 of the extruder to the mold barrel 8 through the piston of the barrel 8, and is pressed into the cavity composed of the movable mold, the fixed mold, the slider 6, etc. At the same time, the cutting and rising assembly moves downward to pressurize the product cavity 7. After pressurization and cooling, the aluminum liquid in the cavity solidifies, and the cutting and rising assembly continues to press down to cut off the middle riser. This method can improve the internal tissue density of the product.

[0026] On the basis of the above, the fixed mold frame 3 is provided with a wear-resistant block 18 in contact with the slider seat. The wear-resistant block 18 cooperates with the inclined surface of the slider seat, and the inclined surface cooperation angle is 18°. The setting of 18° can make the two can cooperate stably and comply with the guidance and movement laws.

[0027] On the basis of the above, the slider 6 cooperates with the movable mold core 2 at an angle of 6°, the slider 6 cooperates with the fixed mold core 4 at an angle of 20°, the movable mold core 2 cooperates with the fixed mold core 4 at an angle of 20°. This angle setting can cooperate with the movement law to achieve a good sealing effect.

[0028] On the basis of the above, if Figure 2 and Figure 3 As shown, the fixed mold frame 3 and the movable mold frame 1 are both provided with exhaust plates 10 on the opposite sides, and the fixed mold core 4 and the movable mold core 2 are both provided with exhaust grooves connected with the exhaust plate 10, so that the exhaust plate 10 is connected with the product cavity 7 through the exhaust groove. During operation, the aluminum liquid is continuously squeezed into the mold cavity, and the push rod assembly pressurizes the cavity. The aluminum liquid continuously flows to the exhaust groove and the exhaust plate 10, so that the gas is discharged through the exhaust groove and the exhaust plate 10 until the aluminum liquid fills the entire exhaust groove and the exhaust plate 10. This structure can quickly and effectively discharge the gas in the cavity, ensure the effective punching of the product, improve the tissue density of the product, and prevent defects such as pores from occurring inside.

[0029] On the basis of the above, the cutting and rising head connection mechanism includes a push plate 11, a diverter cone 12, a diverter cone fixing plate 13, a connecting head 14, an I-shaped conversion joint 15 and a punching cylinder connecting rod 16. One end of the diverter cone 12 is fixed to the push plate 11 through the diverter cone fixing plate 13, and the other end of the diverter cone 12 is used to extend into the product cavity 7. The I-shaped conversion joint 15 is fixed to the diverter cone fixing plate 13 through the connecting head 14. The punching cylinder connecting rod 16 is connected to the I-shaped conversion joint 15. The above-mentioned punching cylinder connecting rod 16 can be used to connect with an external punching cylinder, so that under the drive of the punching cylinder, the diverter cone 12 can move vertically. On the one hand, it plays a role in pressurizing the inside of the product cavity 7, and on the other hand, it plays a role in punching waste materials, thereby improving the quality of the product on the one hand, and directly punching materials on the other hand, reducing production steps and making production easier.

[0030] On the basis of the above, a clamping pin 17 is fixedly connected to the push plate 11, and a clamping groove cooperating with the clamping pin 17 is provided on the movable mold frame 1. This arrangement can guide the movement direction of the diverter cone 12 and prevent the diverter cone 12 from deviating during movement.

[0031] On the basis of the above, a slider water-cooling insert is further connected to the inner side of the slider 6. The slider water-cooling insert is integrally connected to the slider 6 to achieve cooling of the cooling point and ensure the matching accuracy of the mold to the greatest extent.

[0032] On the basis of the above, a water cooling structure is provided in the movable mold frame 1. When the molten aluminum flows into place, coolant is introduced into the water cooling structure, so that the aluminum flowing in the product cavity 7 is quickly cooled and formed, thereby reducing the forming time.

[0033] On the basis of the above, an insulation channel structure is provided in the slider 6. When the liquid injection operation is performed, insulation liquid is injected into the insulation channel structure so that the temperature field of the mold is always maintained during the liquid injection operation, heat loss is reduced, and the aluminum liquid flows into place quickly to prevent the aluminum from solidifying before flowing into place, thereby affecting the product quality.

[0034] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. 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. An aluminum alloy product extrusion casting die structure, characterized in that: The invention comprises a movable mold assembly, a fixed mold assembly and a slider assembly, wherein the movable mold assembly, the fixed mold assembly and the slider assembly form a product cavity (7), and further comprises a cylinder assembly fixedly mounted on the movable mold assembly, wherein a driving rod of the cylinder assembly and the slider assembly are fixedly connected, wherein a cut-and-riser connection mechanism is arranged on the upper part of the movable mold assembly and can pass through the movable mold assembly and extend into the product cavity (7), wherein a barrel (8) is arranged at the bottom of the fixed mold assembly, wherein a water-cooling channel is arranged on the barrel (8); the cut-and-riser connection mechanism comprises a push plate (11), A diverter cone (12), a diverter cone fixing plate (13), a connector (14), an I-shaped conversion joint (15) and a punching oil cylinder connecting rod (16); one end of the diverter cone (12) is fixed to the push plate (11) via the diverter cone fixing plate (13); the other end of the diverter cone (12) is used to extend into the product cavity (7); the I-shaped conversion joint (15) is fixed to the diverter cone fixing plate (13) via the connector (14); and the punching oil cylinder connecting rod (16) is connected to the I-shaped conversion joint (15).

2. The aluminum alloy product extrusion casting die structure according to claim 1, characterized in that: The movable mold assembly comprises a movable mold frame (1) and a movable mold core (2), wherein the movable mold core (2) is fixed on the movable mold frame (1); the fixed mold assembly comprises a fixed mold frame (3) and a fixed mold core (4), wherein the fixed mold core (4) is fixed on the fixed mold frame (3); the slider assembly comprises a slider seat (5) and a slider (6), wherein the slider (6) is mounted on the slider seat (5); the fixed mold core (4), the movable mold core (2) and the slider (6) form the product cavity (7).

3. An aluminum alloy product extrusion casting die structure as claimed in claim 2, characterized in that: The fixed mold frame (3) is provided with a wear-resistant block (18) in contact with the slider seat, the wear-resistant block (18) cooperates with the inclined surface of the slider seat, and the inclined surface cooperation angle is 18°.

4. The aluminum alloy product extrusion casting die structure according to claim 2, characterized in that: The sliding block (6) is matched with the movable mold core (2) at an angle of 6°.

5. The aluminum alloy product extrusion casting die structure according to claim 2, characterized in that: The sliding block (6) is matched with the fixed mold core (4) at an angle of 20°.

6. The aluminum alloy product extrusion casting die structure according to claim 2, characterized in that: The movable mold core (2) and the fixed mold core (4) are matched at an angle, and the matching angle is 20°.

7. The aluminum alloy product extrusion casting die structure according to claim 2, characterized in that: The fixed mold frame (3) and the movable mold frame (1) are both provided with exhaust plates (10) facing each other, and the fixed mold core (4) and the movable mold core (2) are both provided with exhaust grooves connected to the exhaust plates (10), so that the exhaust plates (10) are connected to the product cavity (7) through the exhaust grooves.

8. The aluminum alloy product extrusion casting die structure according to claim 4, characterized in that: A mold clamping pin (17) is fixedly connected to the push plate (11), and a mold clamping groove cooperating with the mold clamping pin (17) is provided on the movable mold frame (1).

9. An aluminum alloy product extrusion casting die structure as claimed in claim 2, characterized in that: A water cooling structure is provided on the inner side of the slider (6), a heat preservation channel structure is provided in the slider (6), and a water cooling structure is provided in the movable mold frame (1); the barrel (8) is fixed to the fixed mold frame (3) via a barrel pressing plate (9).

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