Aluminum profile extrusion production line

By introducing straightening mechanisms and testing mechanisms into the aluminum profile extrusion production line, rapid multi-directional detection and active correction of aluminum profiles are achieved, and the problems of bending, offset and surface oxidation in aluminum profile production are solved, and production efficiency and product quality are improved.

CN120325720APending Publication Date: 2025-07-18SWAN ALUMINUM CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510714889.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-30
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

The existing aluminum profile extrusion production lines are difficult to meet the needs of efficient and high-quality production in straightening, coating and deformation detection. They have bending, offset or distortion, the surface is prone to oxidation and lack of online testing, resulting in unstable product quality and high waste rate.

Method used

Using a straightening mechanism and a detection mechanism, the straightening mechanism uses three electric push rods to drive the side straightening plate and the upper straightening plate to apply pressure on the aluminum profile in multiple directions, combining the sliding support and guide rails to achieve stable straightening; the detection mechanism detects the profile offset through the sliding beads and trigger rods, and integrates the smear frame for automatic coating and real-time alarm.

Benefits of technology

It realizes multi-directional rapid detection and active correction of aluminum profiles, improves straightening accuracy and automation level, reduces manual intervention, ensures product geometric accuracy and surface quality, reduces waste rate, and improves the intelligence and integration capabilities of the production line.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120325720A_ABST
    Figure CN120325720A_ABST
Patent Text Reader

Abstract

The aluminum profile extrusion production line comprises an extrusion production line body, and a straightening mechanism is arranged on one side of the extrusion production line body; according to the aluminum profile multi-direction bending deformation detection device, the straightening mechanism is arranged, the detection mechanism is arranged on the inner side of the straightening mechanism, rapid detection and active correction of multi-direction bending deformation of an aluminum profile are achieved, the straightening mechanism adopts three electric push rods to drive an upper straightening plate and two side straightening plates correspondingly, pressure is applied to the aluminum profile from the top face and the left side and the right side at the same time, and the straightening accuracy is improved. The problems that a traditional straightening structure is single in correction direction and insufficient in straightening precision are effectively solved, in the aspect of structural connection, the bottom end of a first electric push rod is fixed to a sliding base, the base and a guide rail arranged on a bearing plate slide in a matched mode, and therefore the whole straightening structure can adjust the position in a follow-up mode according to the profile moving process, and the centering stability is kept; and the profile is prevented from being staggered and extruded.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum profile production, and particularly to an aluminum profile extrusion production line. Background Art

[0002] As a metal structural material with excellent strength-to-weight ratio, good corrosion resistance and workability, aluminum profiles are widely used in many industrial fields such as construction, transportation, electronics, and machinery. The existing production of aluminum profiles mainly adopts the hot extrusion process. By feeding the aluminum ingots heated to high temperature into the extruder, under the action of high pressure, the aluminum material is formed through the die holes to form aluminum profiles with the required cross-sectional shapes.

[0003] In the actual implementation process, there are still some problems:

[0004] 1. Although the current aluminum profile extrusion production line already has a certain degree of automation and continuity, in the actual application process, there are still many technical bottlenecks, which affect product quality and production efficiency. First of all, after the aluminum profile is extruded from the die outlet, due to factors such as uneven temperature distribution, asymmetric die force or control error of the traction system, the profile often appears bending, offset or twisting to varying degrees, resulting in a decrease in the geometric dimension accuracy of the product. It is necessary to rely on subsequent manual or semi-automatic straightening equipment for correction, which not only increases the production cycle, but also may introduce secondary deformation.

[0005] 2. The existing production line has a relatively single surface treatment method for aluminum profiles and lacks an on-line coating device. The surface of the profile is prone to defects such as scratches and black spots due to high-temperature oxidation or friction, which affects subsequent surface treatment processes such as spraying and electrophoresis. In addition, the traditional production line mostly relies on manual visual inspection or sampling inspection to judge whether the profile is qualified, and it is difficult to identify geometric abnormalities in the continuous extrusion process in a timely manner, resulting in a high scrap rate and serious waste of resources. Therefore, it is necessary to develop an aluminum profile extrusion production line with a compact structure, high functional integration, and integrated on-line straightening, surface coating and automatic detection functions to improve the finished product rate of aluminum profiles and the overall manufacturing level. Summary of the Invention

[0006] (I) Technical Problems to be Solved

[0007] In order to solve the above problems of the existing technology, the present invention provides an aluminum profile extrusion production line, which solves the problems that the existing aluminum profile extrusion production line is difficult to meet the requirements of high-efficiency and high-quality production in straightening, coating and deformation detection.

[0008] (II) Technical Solutions

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention are as follows:

[0010] An aluminum profile extrusion production line includes an extrusion production line body. A straightening mechanism is provided on one side of the extrusion production line body, and a detection mechanism is provided inside the straightening mechanism. The straightening mechanism includes side straightening plates, an upper straightening plate, electric push rod 1, electric push rod 2, and a bracket. The free ends of the two electric push rod 1 are fixedly connected to the side straightening plates, and the free end of the electric push rod 2 is fixedly connected to the upper straightening plate.

[0011] The middle part of the electric push rod 2 is fixedly embedded in the middle part of the bracket, and a bearing plate is fixedly connected to one side wall of the extrusion production line body.

[0012] Two guide rails are fixedly connected to the top of the bearing plate, and a sliding support is slidably connected to the top of the two guide rails.

[0013] The bottom ends of the two electric push rod 1 are both fixedly connected to bases, and the inner sides of the two bases are respectively slidably connected to the two side walls of the bearing plate.

[0014] The bottom end of the bracket is fixedly connected to the top ends of the two electric push rod 1. Water storage tanks are fixedly connected to both sides of the top end of the bracket, and a feeding port is fixedly connected to the top end of the water storage tank.

[0015] Connecting pipes are fixedly connected to the outer sides of the two water storage tanks, and a coating frame is fixedly connected between the two connecting pipes.

[0016] A coating cotton is fixedly connected to the inside of the coating frame. One ends of the two connecting pipes are respectively fixedly connected to both sides of the coating cotton. The bottom ends of the two side straightening plates are both slidably connected to the top end of the sliding support.

[0017] The detection mechanism includes sliding beads, a sound and light alarm, and trigger rods. One ends of the three trigger rods are all fixedly connected to support plates. The three support plates are respectively fixedly connected to both sides and the top end of the coating frame. A return spring is sleeved on the middle part of each of the three trigger rods.

[0018] One ends of the three return springs are respectively fixedly connected to the two side walls and the top end of the coating frame, and the other ends of the three return springs are respectively fixedly connected to the inner sides of the three trigger rods. Trigger switches are fixedly connected to both sides and the top end of the coating frame. A sound and light alarm is fixedly connected to the top end of the electric push rod 2, and the sound and light alarm is electrically connected to the trigger switch.

[0019] The other ends of the three trigger rods are all fixedly connected to mounting cylinders. The three mounting cylinders are respectively slidably connected to both sides and the top end of the coating frame, and sliding beads are rotatably connected to the inner sides of the three mounting cylinders.

[0020] (III) Advantageous Effects

[0021] The advantageous effects of the present invention are:

[0022] 1. In the present invention, through the provided straightening mechanism, rapid detection and active correction of multi-directional bending deformation of aluminum profiles are achieved. The straightening mechanism uses three electric push rods to drive the upper straightening plate and two side straightening plates respectively, applying pressure to the aluminum profile simultaneously from the top surface and the left and right sides, effectively solving the problems of single correction direction and insufficient straightening accuracy of traditional straightening structures. In terms of structural connection, by fixing the bottom end of the first electric push rod to the sliding base, and the base cooperating with the guide rail provided on the bearing plate for sliding, the entire straightening structure can adjust its position following the movement of the profile, maintaining centering stability and avoiding misaligned extrusion of the profile. At the same time, the upper straightening plate is connected to the second electric push rod through a bracket, and the bracket is firmly installed at the top of the first electric push rod, forming a stable support framework. This structure is compact and has strong motion coordination, and can be dynamically adapted according to the size changes of different specifications of aluminum profiles, improving versatility and flexibility. In addition, the design of the sliding support and the guide rail enables the straightening assembly to have longitudinal floating ability, and can achieve on-line straightening operation under continuous extrusion operation conditions, reducing the frequency of manual intervention and improving the automation level. Generally speaking, the straightening structure provided by the present invention has remarkable effects in ensuring the geometric accuracy of the profile and improving product consistency, while enhancing the operation stability and operation convenience of the equipment.

[0023] 2. In the present invention, through the provided detection mechanism, the functions of automatic coating and detection after extrusion of aluminum profiles are achieved. In terms of structural arrangement, water storage tanks are provided on both sides of the top of the bracket of the straightening mechanism. The water storage tanks are connected to the coating frame through connecting pipes, and coating cotton is arranged in the coating frame, which can evenly coat functional liquids such as antioxidant, coolant or release agent on the surface of the profile, effectively improving the oxidation resistance, wear resistance and cooling efficiency of the aluminum profile, extending the subsequent storage and processing cycles, and avoiding the generation of surface defects. At the same time, in order to improve the profile quality monitoring ability, three groups of independent detection components are integrally installed on both sides and the top of the coating frame. Each group includes a sliding bead, an installation cylinder, a trigger rod, a return spring and a trigger switch. When the trigger rod deflects due to eccentricity or torsion during the extrusion movement of the aluminum profile, the sliding bead will trigger the switch, and drive the sound and light alarm installed at the top of the electric push rod to alarm through electrical connection, prompting the operator to intervene and process. This detection system has a simple structure and high sensitivity, and can real-time monitor the offset amount of the aluminum profile in three-dimensional directions without affecting the straightening and coating work, realizing intelligent feedback and abnormal recognition during the continuous production process. Compared with the traditional manual sampling inspection method, this device has the potential of continuous detection, automatic prompt and real-time correction, further ensuring the dimensional accuracy and quality stability of the finished aluminum profile, and significantly improving the intelligence, integration and quality control ability of the overall production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the dorsal part of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the sliding support part of the present invention;

[0027] Figure 4 of the present invention Figure 3 Enlarged view at position A;

[0028] Figure 5 It is a schematic structural diagram of the water storage tank part of the present invention;

[0029] Figure 6 It is a schematic structural diagram of a part of the electric push rod of the present invention.

[0030]

Description of the reference numerals

[0031] 1. Extrusion production line body; 2. Guide rail; 3. Bearing plate; 4. Straightening mechanism; 401. Electric push rod I; 402. Base; 403. Water storage tank; 404. Feeding port; 405. Electric push rod II; 406. Side straightening plate; 407. Connecting pipe; 408. Upper straightening plate; 409. Bracket; 410. Sliding support; 411. Coating frame; 412. Coating cotton; 5. Detection mechanism; 501. Ball; 502. Acousto-optic alarm; 503. Support plate; 504. Trigger switch; 505. Trigger rod; 506. Return spring; 507. Installation cylinder. Detailed implementation manners

[0032] For better explaining the present invention and facilitating understanding, the present invention will be described in detail below in conjunction with the drawings and through specific implementation manners.

[0033] Please refer to Figures 1 to 6 As shown, an aluminum profile extrusion production line of the present invention includes an extrusion production line body 1. A straightening mechanism 4 is provided on one side of the extrusion production line body 1, and a detection mechanism 5 is provided inside the straightening mechanism 4. The straightening mechanism 4 includes a side straightening plate 406, an upper straightening plate 408, an electric push rod I 401, an electric push rod II 405 and a bracket 409. The free ends of two electric push rods I 401 are fixedly connected with side straightening plates 406, and the free end of the electric push rod II 405 is fixedly connected with the upper straightening plate 408.

[0034] Optionally, the middle part of the electric push rod II 405 is fixedly embedded in the middle part of the bracket 409, and a bearing plate 3 is fixedly connected to one side wall of the extrusion production line body 1. During actual implementation, embedding the middle part of the electric push rod II 405 in the middle part of the bracket 409 can ensure that the force is symmetric and the movement is stable when it moves in the up and down directions, avoid skew or jitter caused by eccentric load, and improve the pressing accuracy of the upper straightening plate 408.

[0035] Optionally, two guide rails 2 are fixedly connected to the top end of the bearing plate 3, and a sliding support 410 is slidably connected to the top ends of the two guide rails 2. During actual implementation, by arranging two parallel guide rails 2 at the top end of the bearing plate 3 and setting a sliding support 410 at its top end, the linkage sliding of the straightening mechanism 4 during the movement of the profile can be realized, so that the side straightening plates 406 and the upper straightening plate 408 always maintain an aligned position with the profile, thereby improving the effectiveness and synchronism of pressure application. The addition of the sliding support 410 can reduce the mechanical friction between components and improve the service life of the structure. It should be noted that an external driving mechanism needs to be provided outside the sliding support 410 to realize the reciprocating movement of the sliding support 410. This external driving mechanism preferably adopts reciprocating driving components such as hydraulic cylinders or pneumatic cylinders. Through the telescopic movement of its piston rod, the sliding support 410 is driven to move along the direction of the guide rail 2. The hydraulic cylinder provides stable and adjustable thrust through the hydraulic system to ensure that the sliding support 410 can accurately adjust its position during the movement of the aluminum profile and maintain effective contact and pressure application between the straightening mechanism 4 and the profile.

[0036] Optionally, bases 402 are fixedly connected to the bottom ends of the two electric push rods 401, and the inner sides of the two bases 402 are respectively slidably connected to the two side walls of the bearing plate 3.

[0037] Optionally, the bottom end of the bracket 409 is fixedly connected to the top ends of the two electric push rods 401, and water storage tanks 403 are fixedly connected to both sides of the top end of the bracket 409. A feeding port 404 is fixedly connected to the top end of the water storage tank 403.

[0038] Optionally, connecting pipes 407 are fixedly connected to the outer sides of the two water storage tanks 403, and a coating frame 411 is fixedly connected between the two connecting pipes 407. During actual implementation, the two water storage tanks 403 are connected to the coating frame 411 through external connecting pipes 407 to form a closed liquid supply system. Driven by liquid gravity or pump pressure, the stored liquid can stably flow into the coating cotton 412 inside the coating frame 411, realizing the continuous and uniform coating of functional liquids such as anti-oxidants and coolants on the surface of the aluminum profile. This structure can effectively prevent the generation of surface defects such as oxidation and scratching of the profile.

[0039] Optionally, a coating cotton 412 is fixedly connected to the inner side of the coating frame 411. One ends of the two connecting pipes 407 are respectively fixedly connected to both sides of the coating cotton 412, and the bottom ends of the two side straightening plates 406 are respectively slidably connected to the top end of the sliding support 410. During actual implementation, the coating cotton 412 with strong liquid absorption is arranged inside the coating frame 411 and is connected to the two connecting pipes 407 on both sides, which can stably guide the functional liquid in the water storage tank 403 to the coating surface and realize the all-round fitting coating of the aluminum profile.

[0040] Optionally, the detection mechanism 5 includes a sliding bead 501, an acoustic-optic alarm 502, and a trigger rod 505. One end of each of the three trigger rods 505 is fixedly connected to a support plate 503. The three support plates 503 are respectively fixedly connected to both sides and the top of the coating frame 411. A return spring 506 is sleeved on the middle part of each of the three trigger rods 505. In the actual implementation process, the trigger rod 505 structures are provided on both sides and the top of the coating frame 411 for monitoring the offset changes in the three-dimensional directions of the profile. The trigger rod 505 is elastically connected to the coating frame 411 by the support plate 503, and the return spring 506 is sleeved on the middle part of the structure to ensure rapid reset after triggering. The cooperation between the sliding bead 501 and the end of the trigger rod 505 can achieve sensitive detection and feedback. When the profile is offset or bent to reach the set threshold, the connected switch module can be triggered to realize automatic detection and real-time alarm. This mechanism can provide efficient and real-time geometric abnormality judgment without affecting the coating and straightening accuracy, improve the yield rate, and reduce the rejection rate.

[0041] Optionally, one end of each of the three return springs 506 is respectively fixedly connected to both side walls and the top of the coating frame 411, and the other end of each of the three return springs 506 is respectively fixedly connected to the inner sides of the three trigger rods 505. Trigger switches are fixedly connected to both side walls and the top of the coating frame 411.

[0042] Optionally, the other end of each of the three trigger rods 505 is fixedly connected to an installation cylinder 507. The three installation cylinders 507 are respectively slidably connected to both side walls and the top of the coating frame 411. A sliding bead 501 is rotatably connected to the inner side of each of the three installation cylinders 507. In the actual implementation process, the sliding bead 501 is arranged inside the installation cylinder 507 to enhance the contact sensitivity with the surface of the profile. When the aluminum profile is bent or offset, the sliding bead 501 is pushed and transmits the force to the trigger rod 505, causing a position offset and triggering the response of the trigger switch 504. The sliding bead 501 structure reduces friction and improves the contact response sensitivity to ensure the detection accuracy.

[0043] Working principle: First, the aluminum ingot is subjected to high-temperature extrusion treatment through the extrusion production line body 1, so that the aluminum profile is continuously formed and extruded from the discharge port. At this time, the profile may have certain geometric deformations such as bending, twisting or offset due to uneven heating, die deformation or asynchronous traction. To solve the above problems, a straightening mechanism 4 for straightening the aluminum profile is provided on one side of the extrusion production line body 1. The straightening mechanism 4 includes a side straightening plate 406, an upper straightening plate 408, an electric push rod 401, an electric push rod 405 and a bracket 409. The free ends of two electric push rods 401 are respectively fixedly connected to the side straightening plate 406, which is used to apply straightening pressure from the two sides of the profile, while the free end of the electric push rod 405 is fixedly connected to the upper straightening plate 408, which is used to press and correct the upper part of the profile, so as to realize multi-directional synchronous straightening operation. The bracket 409 is fixedly arranged at the top of the two electric push rods 401, playing a role of firmness and support. The electric push rod 405 is embedded in the middle of the bracket 409 to ensure the accuracy and stability of its up and down movement. To further improve the operation coordination of the straightening mechanism 4, a bearing plate 3 is fixedly connected to the side wall of the extrusion production line body 1. Two guide rails 2 are fixedly installed at the top of the bearing plate 3. A sliding support 410 is slidably connected to the top of the guide rail 2, which is used to guide the straightening mechanism 4 to follow and slide during the movement of the profile, ensuring that it always keeps correct alignment with the profile during the pressing process. The bottom ends of the two electric push rods 401 are fixedly connected with a base 402. The inner side of the base 402 is slidably matched with the two side walls of the bearing plate 3, further enhancing the lateral adjustment ability of the side straightening plate 406 and improving the adaptability and versatility under different specifications of the profile. While realizing the straightening function, the intelligence and stability of the production process are further enhanced. Among them, water storage tanks 403 are fixedly connected to both sides of the top of the bracket 409. An inlet 404 is fixedly connected to the top of the water storage tank 403. A connecting pipe 407 is connected to the outside of the water storage tank 403. A coating frame 411 for coating the functional liquid is fixedly connected between the two connecting pipes 407. A coating cotton 412 is fixedly arranged inside the coating frame 411. The two sides of the coating cotton 412 are communicated with the connecting pipe 407, realizing the function of automatic liquid storage supply. When the aluminum profile passes through the straightening area, the coating cotton 412 can evenly coat functional liquids such as release agent, antioxidant or coolant on its surface, enhancing the surface protection effect of the profile and improving the subsequent processing performance. The two sides and the top of the coating frame 411 are respectively connected to the bottom end of the side straightening plate 406 and the top end of the sliding support 410, ensuring the stable position of the coating frame 411 and its full fit with the profile surface. To realize the automatic detection and feedback control of whether the profile is deformed, a detection mechanism 5 is also arranged inside the straightening mechanism 4. The detection mechanism 5 mainly includes three sliding beads 501, three trigger rods 505, three support plates 503, three return springs 506, three mounting cylinders 507 and an acoustic-optic alarm 502. One ends of the three trigger rods 505 are respectively installed on both sides and the top of the coating frame 411 through the support plates 503,It is elastically connected to the coating frame 411 through a return spring 506 sleeved in the middle. The two ends of the spring are respectively fixedly connected to the wall surface of the coating frame 411 and the inner side of the trigger rod 505. When the aluminum profile is bent and deformed, when it contacts the coating cotton 412, it will push the trigger rod 505 in a certain direction to displace. The mounting cylinder 507 installed at the other end of the trigger rod 505 slides accordingly and drives the sliding bead 501 to shift, triggering the trigger switches 504 located on both side walls and the top of the coating frame 411. The trigger signal is fed back to the sound and light alarm 502 through a wire, starting the sound and light alarm device to remind the operator that there is abnormal deformation in the current profile, facilitating timely processing or recording. The sound and light alarm 502 is installed at the top of the second electric push rod 405, and the control circuit is connected to the trigger switch 504 to achieve a complete signal chain closed-loop. The above detection mechanism 5 is simple in structure, sensitive in response, and reasonable in layout, and can monitor and identify the three-way deviation of the profile in real time without affecting the coating and straightening operations, thereby improving the intelligent and automated level of the overall production process.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Moreover, the standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0045] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. An aluminum profile extrusion production line, comprising an extrusion production line body (1), characterized in that: On one side of the extrusion production line body (1), there is a straightening mechanism (4). Inside the straightening mechanism (4), there is a detection mechanism (5). The straightening mechanism (4) includes side straightening plates (406), an upper straightening plate (408), electric push rod one (401), electric push rod two (405), and a bracket (409). The free ends of the two electric push rods one (401) are fixedly connected to the side straightening plates (406), and the free end of the electric push rod two (405) is fixedly connected to the upper straightening plate (408).

2. The aluminum profile extrusion production line according to claim 1, characterized in that: The middle part of the electric push rod two (405) is fixedly embedded in the middle part of the bracket (409), and one side wall of the extrusion production line body (1) is fixedly connected to a bearing plate (3).

3. The aluminum profile extrusion production line according to claim 2, characterized in that: At the top of the bearing plate (3), two guide rails (2) are fixedly connected. At the top of the two guide rails (2), a sliding support (410) is slidably connected.

4. The aluminum profile extrusion production line according to claim 3, wherein: The bottom ends of the two electric push rods one (401) are both fixedly connected to bases (402), and the inner sides of the two bases (402) are respectively slidably connected to the two side walls of the bearing plate (3).

5. An aluminum profile extrusion production line according to claim 4, characterized in that: The bottom end of the bracket (409) is fixedly connected to the top ends of the two electric push rods one (401). On both sides of the top end of the bracket (409), water storage tanks (403) are fixedly connected. At the top of the water storage tanks (403), a feeding port (404) is fixedly connected.

6. The aluminum profile extrusion production line according to claim 5, characterized in that: On the outer sides of the two water storage tanks (403), connecting pipes (407) are fixedly connected. Between the two connecting pipes (407), a coating frame (411) is fixedly connected.

7. An aluminum profile extrusion production line according to claim 6, characterized in that: Inside the coating frame (411), a coating cotton (412) is fixedly connected. One ends of the two connecting pipes (407) are respectively fixedly connected to both sides of the coating cotton (412). The bottom ends of the two side straightening plates (406) are both slidably connected to the top end of the sliding support (410).

8. An aluminum profile extrusion production line according to claim 7, characterized in that: The detection mechanism (5) includes sliding beads (501), a sound and light alarm (502), and trigger rods (505). One ends of the three trigger rods (505) are all fixedly connected to support plates (503). The three support plates (503) are respectively fixedly connected to both sides and the top of the coating frame (411). In the middle of the three trigger rods (505), reset springs (506) are sleeved.

9. The aluminum profile extrusion production line according to claim 8, characterized in that: One ends of the three reset springs (506) are respectively fixedly connected to the two side walls and the top of the coating frame (411), and the other ends of the three reset springs (506) are respectively fixedly connected to the inner sides of the three trigger rods (505). Trigger switches (504) are fixedly connected to both sides and the top of the coating frame (411). At the top of the electric push rod two (405), a sound and light alarm (502) is fixedly connected. The sound and light alarm (502) is electrically connected to the trigger switch (504).

10. An aluminum profile extrusion production line according to claim 9, characterized in that: The other ends of the three trigger rods (505) are all fixedly connected to mounting cylinders (507). The three mounting cylinders (507) are respectively slidably connected to both sides and the top of the coating frame (411). Inside the three mounting cylinders (507), sliding beads (501) are rotatably connected.