Multi-cavity aluminum alloy lamp profile extrusion device

Abstract

The invention relates to the field of extrusion devices, and discloses a multi-cavity aluminum alloy lamp profile extrusion device which comprises a supporting table, a hydraulic pushing mechanism, a ring pipe, a mold, a stepped cooling mechanism, a surface finishing mechanism and an end treatment mechanism. The hydraulic pushing mechanism and the mold are respectively assembled on the supporting table and are correspondingly arranged; the stepped cooling mechanism is communicated with the annular pipe; a ring pipe is arranged on the supporting table, when the hydraulic pushing mechanism drives the aluminum bar to penetrate through the ring pipe, the surface finishing mechanism conducts scratch treatment on the peripheral face of the aluminum bar, the end treatment mechanism conducts oxidation layer removal on the end of the aluminum bar, cooling liquid is introduced along with the ring pipe to assist the surface finishing mechanism in cooling, and then the cooling liquid flows into the stepped cooling mechanism to be discharged. Through cooperation of the surface finishing mechanism, the scraping hopper and the end processing mechanism, the aluminum bar connecting strength, the surface quality and the end connecting performance are improved; the stepped cooling mechanism achieves gradient cooling through collaborative operation, optimizes the internal structure of the aluminum profile, improves the mechanical performance and guarantees the structural safety.

Description

Technical Field

[0001] The present invention relates to the technical field of extrusion devices, and more specifically, it relates to an extrusion device for multi-cavity aluminum alloy lamp profiles. Background Art

[0002] In the field of aluminum profile extrusion, "multi-cavity" means that there are multiple cavities designed in the mold. The aluminum profile passes through multiple cavities and finally converges in the forming cavity and is extruded and discharged to improve the quality of the extruded aluminum profile. For example, the aluminum alloy profile of a lamp skeleton is usually formed into a long profile by passing through an extrusion die and then formed into the required specific shape through subsequent processing.

[0003] The general forming process of aluminum alloy profiles is to first heat the aluminum rod, and then use a pushing mechanism to make it pass through the mold to complete the forming. However, in the continuous production process, the aluminum rods need to be put in successively and gradually. Since the two sections of aluminum alloy put in before and after are not integrally formed, obvious weak links will be formed at the connection part, which makes it difficult to achieve the expected ideal level of connection strength, and the connection part is extremely prone to failure conditions such as fracture. Summary of the Invention

[0004] The present invention provides an extrusion device for multi-cavity aluminum alloy lamp profiles, which solves the technical problem that the extruded aluminum alloy lamp profiles are fractured and fail due to the weak connection between aluminum rods in the related extrusion device for multi-cavity aluminum alloy lamp profiles.

[0005] The present invention provides an extrusion device for multi-cavity aluminum alloy lamp profiles, including a support table, a hydraulic pushing mechanism, a ring pipe, a mold, a stepped cooling mechanism, a surface finishing mechanism and an end treatment mechanism;

[0006] The hydraulic pushing mechanism and the mold are respectively assembled on the support table and are correspondingly arranged;

[0007] The stepped cooling mechanism is communicated with the ring pipe;

[0008] A ring pipe is arranged on the support table. When the hydraulic pushing mechanism drives the aluminum rod to pass through the ring pipe, the surface finishing mechanism treats the scratches on the outer peripheral surface of the aluminum rod, and the end treatment mechanism removes the oxide layer at the end of the aluminum rod. Along with the ring pipe passing through the coolant to assist the surface finishing mechanism in cooling down, the coolant then flows into the stepped cooling mechanism and is discharged. After the aluminum rod is extruded through the mold, it passes through the stepped cooling mechanism for gradient cooling.

[0009] As a further optimized scheme of the present invention, the stepped cooling mechanism includes a sleeve and a connecting pipe. A cavity is opened inside the sleeve, and the cavity is communicated with the drain port of the ring pipe through the connecting pipe. A drain pipe is communicated with one side of the sleeve close to the mold.

[0010] As a further optimized scheme of the present invention, a liquid supply pipe is communicated with the liquid inlet of the ring pipe, and the liquid supply pipe is communicated with a liquid supply device.

[0011] As a further optimization solution of the present invention, a partition plate is installed in the annular pipe, and the partition plate is located between the liquid discharging end of the communicating pipe row and the liquid supplying end of the liquid supply pipe.

[0012] As a further optimization solution of the present invention, the surface finishing mechanism includes a communicating box, a T-shaped rod, a notch cutter and a reciprocating spring. The communicating box is communicated with the annular pipe. The T-shaped rod slides through the communicating box and is fixedly connected with the notch cutter. The notch cutter is used for scratching the outer periphery of the aluminum rod. The reciprocating spring is movably sleeved on the T-shaped rod. One end of the reciprocating spring is fixedly connected with the T-shaped end of the T-shaped rod, and the other end is fixedly connected with the communicating box.

[0013] As a further optimization solution of the present invention, a scraping bucket is fixedly installed on the annular pipe, and the scraping bucket is used for pre-scraping the outer periphery of the aluminum rod.

[0014] As a further optimization solution of the present invention, the end processing mechanism includes a mounting rod, a moving rod, a return spring, a linear actuator and a friction member. The mounting rod is installed on the support platform and is fixedly connected with the annular pipe. One end of the moving rod slides through the mounting rod and is fixedly connected with the linear actuator. The return spring is movably sleeved on the outer periphery of the moving rod. One end of the return spring is fixedly connected with the mounting rod, and the other end is fixedly connected with the linear actuator. The driving end of the linear actuator is connected with the friction member.

[0015] As a further optimization solution of the present invention, the friction member includes a rubbing rod and a polishing plate. The rubbing rod is installed at the driving end of the linear actuator and is fixedly connected with the polishing plate.

[0016] As a further optimization solution of the present invention, the linear actuator is one of a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

[0017] As a further optimization solution of the present invention, support rollers are provided on the support platform, and the support rollers are in rolling connection with the aluminum rod.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. A multi - cavity aluminum alloy lamp profile extrusion device according to the present invention processes the scratches on the surface of the aluminum rod through a surface finishing mechanism. It not only enhances the mechanical bite force through the concave - convex structure after scratching, but also promotes atomic diffusion, significantly improving the connection strength between aluminum rods, effectively reducing the subsequent fracture risk. At the same time, the stepped cooling mechanism cools the aluminum profile in a gradient manner, optimizing the internal structure, improving the mechanical properties, reducing internal stress concentration and deformation. In the field of aluminum profiles for industrial frameworks, it can better withstand external forces and ensure structural safety. The scraping bucket pre - cleans impurities, cooperates with the surface finishing mechanism to improve the surface cleanliness and the bonding force of subsequent processing. The end - processing mechanism removes the oxide layer at the end of the aluminum rod to ensure good end - connection performance, making the splicing of the aluminum profile tighter and more reliable.

[0020] 2. A multi - cavity aluminum alloy lamp profile extrusion device according to the present invention, the stepped cooling mechanism operates in coordination through the sleeve, the connecting pipe and the annular pipe to pre - cool the surface finishing mechanism, so that the coolant discharged from the annular pipe has a temperature. The coolant with temperature is introduced into the far end of the sleeve and gradually flows from the far end of the sleeve towards the end close to the mold, so that the temperature of the coolant gradually rises, reducing the temperature difference of the aluminum profile extruded from the mold, realizing the gradient cooling of the aluminum profile by the coolant circulation, optimizing the internal structure of the aluminum profile, making the atomic arrangement orderly, reducing the deformation or cracking caused by internal stress concentration, refining the grain structure, significantly improving the mechanical properties such as the strength, hardness and toughness of the aluminum profile, and enhancing the durability of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a multi - cavity aluminum alloy lamp profile extrusion device proposed by the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the sleeve in a multi - cavity aluminum alloy lamp profile extrusion device proposed by the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of another perspective of a multi - cavity aluminum alloy lamp profile extrusion device proposed by the present invention.

[0024] Figure 4 It is a schematic diagram of a partial structure in a multi - cavity aluminum alloy lamp profile extrusion device proposed by the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the end - processing mechanism in a multi - cavity aluminum alloy lamp profile extrusion device proposed by the present invention.

[0026] Figure 6 It is a schematic diagram of the end - sectional structure of the sleeve in a multi - cavity aluminum alloy lamp profile extrusion device proposed by the present invention.

[0027] Figure 7Schematic side sectional view structure diagram of the annular pipe in a multi-chamber aluminum alloy lamp profile extrusion device proposed by the present invention.

[0028] In the figure:

[0029] 1. Support platform;

[0030] 2. Hydraulic pushing mechanism;

[0031] 3. Annular pipe;

[0032] 4. Mold;

[0033] 5. Step cooling mechanism; 51. Sheath; 52. Connecting pipe; 53. Drain pipe;

[0034] 6. Surface finishing mechanism; 61. Connecting box; 62. T-shaped rod; 63. Notch cutter; 64. Reciprocating spring; 65. Scraping bucket;

[0035] 7. End processing mechanism; 71. Mounting rod; 72. Moving rod; 73. Return spring; 74. Linear actuator; 75. Wiping rod; 76. Grinding plate;

[0036] 8. Liquid supply pipe;

[0037] 9. Partition board;

[0038] 10. Support roller. Detailed implementation manners

[0039] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described in some examples can also be combined in other examples.

[0040] As Figures 1 to 7 shown, a multi-chamber aluminum alloy lamp profile extrusion device according to an embodiment of the present invention includes a support platform 1, a hydraulic pushing mechanism 2, an annular pipe 3, a mold 4, a step cooling mechanism 5, a surface finishing mechanism 6, and an end processing mechanism 7;

[0041] The hydraulic pushing mechanism 2 and the mold 4 are respectively assembled on the support platform 1 and are correspondingly arranged;

[0042] The step cooling mechanism 5 is communicated with the annular pipe 3;

[0043] A ring pipe 3 is provided on the support platform 1. When the hydraulic pushing mechanism 2 drives the aluminum rod to pass through the ring pipe 3, the surface finishing mechanism 6 processes the scratches on the outer peripheral surface of the aluminum rod, and the end processing mechanism 7 removes the oxide layer at the end of the aluminum rod. Along with the ring pipe 3 passing through the coolant to assist the surface finishing mechanism 6 in cooling down, the coolant then flows into the stepped cooling mechanism 5 and is discharged. After the aluminum rod is extruded through the mold 4, it passes through the stepped cooling mechanism 5 for gradient cooling.

[0044] The hydraulic pushing mechanism 2 generates a thrust to push the aluminum rod to move. The mold 4 is a component for forming the aluminum rod. Under the action of the hydraulic pushing mechanism 2, the aluminum rod passes through the mold 4 and is extruded into an aluminum profile of the required shape. On the one hand, the ring pipe 3 provides coolant for the surface finishing mechanism 6 to assist in cooling down, and on the other hand, it transports the coolant to the stepped cooling mechanism 5. The surface finishing mechanism 6 processes the scratches on the outer peripheral surface of the aluminum rod, which can remove surface impurities and scratches and increase the bonding force during subsequent processing. The end processing mechanism 7 removes the oxide layer at the end of the aluminum rod to avoid the oxide layer affecting the quality of the aluminum profile. The stepped cooling mechanism 5 enables the formed aluminum profile to be cooled in a gradient manner, which helps to improve the internal structural stability and mechanical properties of the aluminum profile.

[0045] Scratching on the surface of the aluminum rod has the following effects:

[0046] Enhance mechanical bonding force: The scratches form tiny uneven structures on the surface of the aluminum rod. When two aluminum rods are under pressure in the mold 4, these uneven parts are embedded in each other, just like a mortise and tenon structure, significantly increasing the mechanical bite between the aluminum rods. This mechanical interlocking effect can effectively resist the relative sliding between the aluminum rods and greatly improve the firmness of the connection to increase the stability of the extruded aluminum profile.

[0047] Promote atomic diffusion: The scratches on the surface of the aluminum rod destroy the originally relatively dense oxide film, exposing the internal aluminum atoms. Under the high-pressure environment of the mold 4 and the temperature after the aluminum rod is heated, the activity of these exposed aluminum atoms is enhanced, and they can diffuse more quickly and fully with the atoms of another aluminum rod. As the atoms diffuse, the interface between the two aluminum rods gradually becomes blurred, forming a transition region to achieve tight bonding at the atomic level, thereby enhancing the connection strength.

[0048] Improve surface contact: The scratches increase the surface roughness of the aluminum rod, which also increases the surface area. During the extrusion process, the larger contact area enables more sufficient contact between the two aluminum rods. This is not only beneficial to atomic diffusion but also allows the pressure to be more evenly distributed on the contact surface, avoiding stress concentration. The uniform pressure distribution helps to improve the stability of the connection, enabling the aluminum rod to better withstand various external forces during subsequent use.

[0049] In an alternative embodiment, the stepped cooling mechanism 5 includes a housing 51 and a connecting pipe 52. A cavity is formed inside the housing 51, and the cavity is communicated with the liquid discharge port of the annular pipe 3 through the connecting pipe 52. A liquid discharge pipe 53 is communicated with one side of the housing 51 close to the mold 4.

[0050] The cavity inside the housing 51 is used to accommodate the coolant. The connecting pipe 52 realizes the connection between the annular pipe 3 and the housing 51, enabling the coolant to flow smoothly into the housing 51. The liquid discharge pipe 53 discharges the used coolant. When the aluminum profile passes through the housing 51, the coolant flows inside the housing 51, taking away the heat of the aluminum profile to achieve gradient cooling, cooling the aluminum profile, ensuring that the temperature of the aluminum profile drops evenly during the cooling process, and reducing problems such as deformation or internal stress concentration caused by too rapid temperature change.

[0051] In an alternative embodiment, a liquid supply pipe 8 is communicated with the liquid inlet of the annular pipe 3, and the liquid supply pipe 8 is communicated with a liquid supply device.

[0052] The liquid supply pipe 8 connects the liquid supply device and the annular pipe 3, conveying the coolant in the liquid supply device to the annular pipe 3, providing a coolant source for the entire cooling system, and ensuring the continuous supply of the coolant.

[0053] In an alternative embodiment, a partition plate 9 is installed inside the annular pipe 3, and the partition plate 9 is located between the liquid discharge end of the connecting pipe 52 and the liquid supply end of the liquid supply pipe 8.

[0054] The partition plate 9 is installed inside the annular pipe 3, between the liquid discharge end of the connecting pipe 52 and the liquid supply end of the liquid supply pipe 8. Its function is to separate the flow direction of the coolant inside the annular pipe 3, prevent the newly entered coolant from mixing with the coolant about to be discharged, and ensure the cooling effect of the coolant.

[0055] In an alternative embodiment, the surface finishing mechanism 6 includes a connecting box 61, a T-shaped rod 62, a scoring knife 63 and a reciprocating spring 64. The connecting box 61 is communicated with the annular pipe 3. The T-shaped rod 62 slides through the connecting box 61 and is fixedly connected to the scoring knife 63. The scoring knife 63 is used to score the outer circumference of the aluminum rod. The reciprocating spring 64 is movably sleeved on the T-shaped rod 62. One end of the reciprocating spring 64 is fixedly connected to the T-shaped end of the T-shaped rod 62, and the other end is fixedly connected to the connecting box 61.

[0056] The connecting box 61 is communicated with the annular pipe 3, enabling the coolant to enter the connecting box 61. When the aluminum rod passes through the annular pipe 3 under the action of the hydraulic pushing mechanism 2, the scoring knife 63 scores the outer circumference of the aluminum rod driven by the T-shaped rod 62. The T-shaped rod 62 slides inside the connecting box 61, and the reciprocating spring 64 provides power for the reciprocating movement of the T-shaped rod 62, so that the scoring knife 63 presses against the aluminum rod. At the same time, the coolant inside the connecting box 61 also conducts heat to the scoring knife 63 after it is heated due to contact with the high-temperature aluminum rod, to ensure the strength of the scoring knife 63.

[0057] In an alternative embodiment, a scraping bucket 65 is fixedly installed on the annular pipe 3, and the scraping bucket 65 is used to scrape the outer periphery of the aluminum rod in advance.

[0058] The scraping bucket 65 is fixedly installed on the annular pipe 3. Before the aluminum rod passes through the annular pipe 3, the scraping bucket 65 first scrapes the outer periphery of the aluminum rod to remove large-particle impurities or oxide skins on the surface of the aluminum rod, further ensuring the cleanliness of the aluminum rod surface and improving the surface quality of the aluminum profile.

[0059] In an alternative embodiment, the end treatment mechanism 7 includes a mounting rod 71, a moving rod 72, a return spring 73, a linear actuator 74 and a friction member. The mounting rod 71 is installed on the support table 1 and fixedly connected to the annular pipe 3. One end of the moving rod 72 slides through the mounting rod 71 and is fixedly connected to the linear actuator 74. The return spring 73 is movably sleeved on the outer periphery of the moving rod 72. One end of the return spring 73 is fixedly connected to the mounting rod 71, and the other end is fixedly connected to the linear actuator 74. The driving end of the linear actuator 74 is connected to the friction member.

[0060] The mounting rod 71 is fixed on the support table 1 and connected to the annular pipe 3, playing a role of support and positioning. The moving rod 72 slides on the mounting rod 71. The return spring 73 provides a return force for the moving rod 72, and the linear actuator 74 provides power to drive the friction member to move. When the aluminum rod enters the device, the linear actuator 74 drives the friction member to approach the end of the aluminum rod to frictionally remove the oxide layer at the end of the aluminum rod. Under the action of the return spring 73, the friction member can be continuously used along with the movement of the aluminum rod.

[0061] In an alternative embodiment, the friction member includes a rubbing rod 75 and a grinding plate 76. The rubbing rod 75 is installed at the driving end of the linear actuator 74 and fixedly connected to the grinding plate 76.

[0062] The rubbing rod 75 is installed at the driving end of the linear actuator 74, and the grinding plate 76 is fixed on the rubbing rod 75. The linear actuator 74 drives the rubbing rod 75 and the grinding plate 76 to move. The grinding plate 76 contacts the end of the aluminum rod to remove the oxide layer by friction, and the grinding plate 76 removes the oxide layer at the end of the aluminum rod.

[0063] Specifically, the linear actuator 74 is one of a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

[0064] In an alternative embodiment, support rollers 10 are provided on the support table 1, and the support rollers 10 are in rolling connection with the aluminum rod.

[0065] The support rollers 10 are installed on the support table 1 and in rolling connection with the aluminum rod. During the process of the aluminum rod being pushed by the hydraulic pushing mechanism 2, the support rollers 10 play a role of support and friction reduction, making the movement of the aluminum rod smoother.

[0066] Working principle:

[0067] Aluminum rod conveying and pretreatment: The aluminum rod is placed on the support table 1, and the support roller 10 plays the role of supporting and reducing friction to facilitate the movement of the aluminum rod. The hydraulic pushing mechanism 2 is started to generate thrust to push the aluminum rod. In the process of the aluminum rod passing through the ring tube 3, the scraper 65 pre-scrapes off the granular impurities or oxide scale on the periphery of the aluminum rod, and then the surface finishing mechanism 6 starts to work. Under the action of the reciprocating spring 64, the notching knife 63 scratches the outer surface of the aluminum rod to remove impurities while preparing for enhanced connection. The coolant in the ring tube 3 flows into the connecting box 61 to assist the notching knife 63 in cooling down. In the end processing mechanism 7, the mounting rod 71 is fixed to the support table 1 and connected to the ring tube 3. The linear actuator 74 drives the wiping rod 75 and the grinding plate 76 close to the end of the aluminum rod. With the cooperation of the return spring 73, the oxide layer on the end of the aluminum rod is continuously removed.

[0068] Aluminum rod extrusion molding: The pre-treated aluminum rod is continuously pushed by the hydraulic pushing mechanism 2 through the die 4.

[0069] Profile cooling treatment: After cooling the surface finishing mechanism 6, the coolant in the ring tube 3 flows into the shell 51 of the stepped cooling mechanism 5 through the connecting pipe 52. The internal cavity of the shell 51 contains the coolant. The coolant flows from the far end of the shell 51 to the end close to the mold 4. The temperature gradually increases, and the aluminum profile extruded from the mold 4 is gradually cooled. When the aluminum profile passes through the shell 51, the coolant takes away the heat and is finally discharged through the drain pipe 53. The gradient cooling optimizes the internal structure of the aluminum profile, reduces internal stress concentration and deformation, and improves mechanical properties.

[0070] Coolant circulation supply: The liquid supply pipe 8 connects the liquid supply equipment and the ring pipe 3, continuously providing coolant to the ring pipe 3 to ensure the normal operation of the cooling. The partition plate 9 in the ring pipe 3 separates the coolant flow to prevent the newly entered coolant from mixing with the coolant to be discharged, ensuring that the coolant always maintains a good cooling effect.

[0071] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A multi-cavity aluminum alloy lamp profile extrusion device, characterized in that, It includes a support platform (1), a hydraulic pushing mechanism (2), an annular pipe (3), a mold (4), a stepped cooling mechanism (5), a surface finishing mechanism (6) and an end processing mechanism (7); The hydraulic pushing mechanism (2) and the mold (4) are respectively assembled on the support platform (1) and are correspondingly arranged; The stepped cooling mechanism (5) is communicated with the annular pipe (3); An annular pipe (3) is arranged on the support platform (1). When the hydraulic pushing mechanism (2) drives an aluminum rod to pass through the annular pipe (3), the surface finishing mechanism (6) processes the scratches on the outer peripheral surface of the aluminum rod, and the end processing mechanism (7) removes the oxide layer at the end of the aluminum rod. Along with the annular pipe (3) passing through the cooling liquid to assist the surface finishing mechanism (6) in cooling down, the cooling liquid then flows into the stepped cooling mechanism (5) and is discharged. After the aluminum rod is extruded by the mold (4), it passes through the stepped cooling mechanism (5) for gradient cooling.

2. The extrusion device for a multi-chamber aluminum alloy lamp profile according to claim 1, wherein: The stepped cooling mechanism (5) includes a housing (51) and a connecting pipe (52). A cavity is formed inside the housing (51), and the cavity is communicated with the drain port of the annular pipe (3) through the connecting pipe (52). A drain pipe (53) is communicated with one side of the housing (51) close to the mold (4).

3. A multi-cavity aluminum alloy lamp profile extrusion device according to claim 2, characterized in that: A liquid supply pipe (8) is communicated with the liquid inlet of the annular pipe (3), and the liquid supply pipe (8) is communicated with a liquid supply device.

4. A multi-cavity aluminum alloy lamp profile extrusion device according to claim 3, characterized in that: A partition plate (9) is installed inside the annular pipe (3), and the partition plate (9) is located between the drain end of the connecting pipe (52) and the liquid supply end of the liquid supply pipe (8).

5. A multi-cavity aluminum alloy lamp profile extrusion device according to claim 4, characterized in that: The surface finishing mechanism (6) includes a connecting box (61), a T-shaped rod (62), a notch cutter (63) and a reciprocating spring (64). The connecting box (61) is communicated with the annular pipe (3). The T-shaped rod (62) slides through the connecting box (61) and is fixedly connected with the notch cutter (63). The notch cutter (63) is used for scratching the outer periphery of the aluminum rod. The reciprocating spring (64) is movably sleeved on the T-shaped rod (62). One end of the reciprocating spring (64) is fixedly connected with the T-shaped end of the T-shaped rod (62), and the other end is fixedly connected with the connecting box (61).

6. A multi-cavity aluminum alloy lamp profile extrusion device according to claim 5, characterized in that: A scraping bucket (65) is fixedly installed on the annular pipe (3), and the scraping bucket (65) is used for pre-scraping the outer periphery of the aluminum rod.

7. The extrusion device for multi-cavity aluminum alloy lamp profiles according to claim 6, characterized in that: The end processing mechanism (7) includes a mounting rod (71), a moving rod (72), a return spring (73), a linear actuator (74) and a friction member. The mounting rod (71) is installed on the support platform (1) and is fixedly connected with the annular pipe (3). One end of the moving rod (72) slides through the mounting rod (71) and is fixedly connected with the linear actuator (74). The return spring (73) is movably sleeved on the outer periphery of the moving rod (72). One end of the return spring (73) is fixedly connected with the mounting rod (71), and the other end is fixedly connected with the linear actuator (74). The driving end of the linear actuator (74) is connected with the friction member.

8. A multi-chamber aluminum alloy lamp profile extrusion device according to claim 7, characterized in that: The friction member includes a rubbing rod (75) and a polishing plate (76). The rubbing rod (75) is installed at the driving end of the linear actuator (74) and is fixedly connected with the polishing plate (76).

9. A multi-chamber aluminum alloy lamp profile extrusion device according to claim 8, characterized in that: The linear actuator (74) is one of a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

10. A multi-chamber aluminum alloy lamp profile extrusion device according to claim 9, characterized in that: Support rollers (10) are provided on the support table (1), and the support rollers (10) are in rolling connection with the aluminum rod.

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