Surface treatment device for aluminum alloy handrail production

Abstract

The invention relates to the technical field of aluminum profile machining, in particular to a surface treatment device for aluminum alloy handrail production. The polishing device comprises an operation table, a polishing component is arranged at the top of the operation table, the polishing component comprises a mounting box mounted on one side of the operation table, a pair of symmetrically-arranged limiting seats is slidably connected to the top of the operation table, and fixing mechanisms are rotationally connected to the sides, close to each other, of the two limiting seats; according to the surface treatment device for aluminum alloy handrail production, the distance between the polishing disc and the top of a handrail can be automatically adjusted through the arranged positioning adjusting mechanism according to the height of the top of the handrail. After the polishing disc completes polishing of one plane of the aluminum alloy handrail, the stepping motor drives the positioning wheel to rotate by a certain angle, the polishing degree of the polishing disc to the handrail is kept consistent no matter whether the plane of the handrail is upward or the fillet of the handrail is upward, and the turnover angle of the handrail is determined according to the rotation angle of the positioning wheel.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum profile processing, in particular to a surface treatment device used for the production of aluminum alloy railings. Background Art

[0002] Aluminum alloy railings are widely used in the fields of architecture, gardening, transportation, etc. due to their good corrosion resistance, light weight, beautiful appearance and high strength. Different places have different requirements for the shape and appearance of aluminum alloy railings. Aluminum alloy railings with non-circular cross-sections, such as rectangles, diamonds, etc., can meet specific design requirements and aesthetic standards. With the acceleration of urbanization and the continuous improvement of people's requirements for the quality of living environment, the demand for aluminum alloy railings continues to grow, and at the same time, higher requirements are placed on their surface quality and production efficiency.

[0003] In the production process of aluminum alloy railings, surface polishing is one of the key links, which directly affects the appearance quality and durability of the railings. The traditional polishing method usually fixes the railing, polishes and grinds one surface, then removes the railing from the fixing mechanism, adjusts the position and re-fixes it to polish the next surface. This method may be feasible for railings with simple shapes, but it has obvious limitations for railings with non-circular cross-sections. On the one hand, the frequent disassembly and re-fixation process is cumbersome, consumes a lot of time and manpower, and seriously affects production efficiency. On the other hand, during the disassembly and installation process, it is easy to cause damage to the surface of the railing, affecting product quality.

[0004] In order to improve the polishing efficiency, the existing aluminum alloy railing polishing device usually sets the fixing mechanism on the flipping mechanism so that multiple surfaces can be polished without disassembling the railing. However, for railings with non-circular cross-sections, due to the different distances from different positions to the polishing mechanism, it is difficult to adjust the distance from the polishing mechanism to the railing surface in real time during the railing flipping process. This leads to uneven polishing at different positions of the railing, excessive polishing at some positions and thinning of the thickness, which affects the strength and service life of the railing; insufficient polishing at some positions makes it difficult to completely remove the rust and unevenness on the railing surface, affecting the appearance quality. This situation not only fails to meet the high-quality production requirements, but may also increase the subsequent maintenance costs and customer complaint risks due to unstable quality.

[0005] In view of this, we propose a surface treatment device for aluminum alloy railing production to improve the deficiencies in the prior art. Summary of the invention

[0006] The object of the present invention is to provide a surface treatment device for the production of aluminum alloy railings to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention aims to provide a surface treatment device for the production of aluminum alloy railings, comprising an operating table, a polishing component is provided on the top of the operating table, the polishing component comprises an installation box installed on one side of the operating table, a pair of symmetrically arranged limit seats are slidably connected to the top of the operating table, two limit seats are rotatably connected to a fixing mechanism on the side close to each other, a polishing mechanism is installed on the side of the installation box close to the fixing mechanism, an adaptation mechanism is provided between the installation box and the polishing mechanism, a positioning adjustment mechanism is coaxially connected between one of the fixing mechanisms and the limit seat, and a ratchet mechanism is coaxially connected to one side of the other fixing mechanism; The two fixing mechanisms are used to fix the railing to be polished under the polishing mechanism. The polishing mechanism is used to grind and polish the surface of the railing. During the process of the polishing mechanism polishing the surface of the railing, the adapting mechanism is used to absorb the energy generated by the vibration of the polishing mechanism. The positioning and adjusting mechanism is used to flip the railing to be polished. During the flipping of the railing, the positioning and adjusting mechanism can locate the flipping angle of the railing, and the positioning and adjusting mechanism can adjust the distance between the bottom of the polishing mechanism and the railing. The adapting mechanism can drive the polishing mechanism to reset after displacement.

[0008] As a further improvement of the technical solution, a ventilation cavity is provided at the bottom of the installation box, and a smoke collecting box is provided at a side of the ventilation cavity away from the operating table.

[0009] As a further improvement of the present technical solution, the fixing mechanism includes a mounting shell rotatably connected to the limit seat, each side of the mounting shell is slidably connected to a telescopic rod, each telescopic rod is fixedly connected to a damping block at one end away from the mounting shell, and a first spring is sleeved on the periphery of each telescopic rod between the mounting shell and the damping block.

[0010] As a further improvement of the present technical solution, the polishing mechanism includes a pair of positioning bolts symmetrically arranged on one side of the installation box from top to bottom, a positioning rod is fixedly connected between the two positioning bolts, an electric push rod is provided on the positioning rod, the fixed end of the electric push rod is slidably connected to the positioning rod, the movable end of the electric push rod is fixedly connected to the positioning bolt, the movable end of the electric push rod is fixedly connected to a lifting seat on the side away from the installation box, a support seat is provided on the side of the lifting seat away from the electric push rod, a driving motor is provided on the top of the support seat, a polishing disk is provided under the support seat, and the polishing disk is coaxially connected to the output shaft of the driving motor.

[0011] As a further improvement of the present technical solution, the adaptation mechanism includes a buffer groove opened on one side of the lifting seat and a buffer bolt fixedly connected to one side of the support seat, a guide rod is fixedly connected in the buffer groove, the buffer bolt is slidably connected to the guide rod, and a second spring is sleeved on the upper and lower sides of the buffer bolt around the periphery of the guide rod.

[0012] As a further improvement of the present technical solution, the positioning and adjustment mechanism includes a rotating rod coaxially connected to one side of the mounting shell, a positioning wheel is coaxially connected to the rotating rod, a plurality of protrusions are provided on the periphery of the positioning wheel, a recess is provided between two adjacent protrusions, an adjusting rod is provided above the positioning wheel, an end of the adjusting rod away from the positioning wheel is fixedly connected to a support seat, a stepping motor is provided on the side of the limit seat away from the positioning wheel, and the positioning wheel is coaxially connected to the stepping motor.

[0013] As a further improvement of the present technical solution, the ratchet mechanism includes a limiting ring coaxially connected to the periphery of the rotating rod, the inner ring of the limiting ring is provided with a plurality of ratchet pawls, and the ratchet mechanism also includes a ratchet tooth rotatably connected to the rotating rod, and the ratchet tooth is engaged with one of the ratchet pawls.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the surface treatment device used for the production of aluminum alloy railings, the positioning adjustment mechanism can automatically adjust the distance between the polishing disc and the top of the railing according to the height of the top of the railing. Specifically, after the polishing disc completes the polishing of a plane of the aluminum alloy railing, the stepper motor drives the positioning wheel to rotate a certain angle (usually 45° or 315°), so that: whether the plane of the railing is upward or the rounded corner is upward, the polishing degree of the railing by the polishing disc is consistent. During the rotation of the positioning wheel, from the convex block to the concave part and then to the convex block, the rotation angle of the positioning wheel is 45° or 315°, so that the turning angle of the railing is determined according to the rotation angle of the positioning wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cutaway schematic diagram of the present invention; Figure 3 It is a cutaway left side view of the polishing component of the present invention; Figure 4 It is a partial front view of the polishing component of the present invention; Figure 5 It is a side view of the fixing mechanism of the present invention; Figure 6 It is a left side view of the polishing mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 It is a three-dimensional structural diagram of the positioning and adjusting mechanism of the present invention; Fig. 9 For the present invention Figure 8 Enlarged view of point B in the middle.

[0016] The meaning of each number in the figure is: 11. Operation table; 12. Installation box; 13. Ventilation cavity; 14. Smoke collecting box; 15. Limit seat; 20. Fixing mechanism; 21. Mounting shell; 22. Telescopic rod; 23. Damping block; 24. First spring; 30. Polishing mechanism; 31. Positioning bolt; 32. Positioning rod; 33. Electric push rod; 34. Lifting seat; 35. Support seat; 36. Driving motor; 37. Polishing disc; 40. Adaptation mechanism; 41. Buffer groove; 42. Buffer bolt; 43. Guide rod; 44. Second spring; 50. Positioning adjustment mechanism; 51. Rotating rod; 52. Positioning wheel; 53. Bump; 54. Adjusting rod; 55. Stepping motor; 60. Ratchet mechanism; 61. Limiting ring; 62. Ratchet tooth; 63. Pawl. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] See also Figure 1-Figure 4 As shown, the purpose of this embodiment is to provide a surface treatment device for the production of aluminum alloy railings, including an operating table 11, a polishing component is provided on the top of the operating table 11, and the polishing component includes an installation box 12 installed on one side of the operating table 11, a pair of symmetrically arranged limit seats 15 are slidably connected to the top of the operating table 11, and the two limit seats 15 are rotatably connected to the sides close to each other with a fixing mechanism 20, and the installation box 12 is installed with a polishing mechanism 30 on the side close to the fixing mechanism 20, and an adaptation mechanism 40 is provided between the installation box 12 and the polishing mechanism 30, a positioning adjustment mechanism 50 is coaxially connected between one of the fixing mechanisms 20 and the limit seat 15, and a ratchet mechanism 60 is coaxially connected to one side of the other fixing mechanism 20; The two fixing mechanisms 20 are used to fix the railing to be polished under the polishing mechanism 30. The polishing mechanism 30 adjusts its own height so that the bottom contacts the railing, thereby grinding and polishing the surface of the railing. In the process of polishing the surface of the railing by the polishing mechanism 30, the energy generated by the vibration of the polishing mechanism 30 when it is working is absorbed by the adaptation mechanism 40. When one of the surfaces of the railing is polished, the railing is flipped by the positioning adjustment mechanism 50. In the process of flipping the railing, the positioning adjustment mechanism 50 can locate the flipping angle of the railing. At the same time, the positioning adjustment mechanism 50 adjusts the distance between the bottom of the polishing mechanism 30 and the railing. When the polishing mechanism 30 is in the raised position and the work is completed, the adaptation mechanism 40 drives the displaced polishing mechanism 30 to reset.

[0020] In addition, a ventilation cavity 13 is provided at the bottom of the installation box 12, and a smoke collecting box 14 is provided at a side of the ventilation cavity 13 away from the operating table 11. The smoke collecting box 14 generates a negative pressure attraction when working, and collects smoke generated when the polishing mechanism 30 works.

[0021] Square railings usually have a larger bottom surface and four right angles, and can provide more stable support during installation compared to round railings. In particular, the stability advantage of square railings is more obvious in situations where they need to withstand greater pressure or wind force. Therefore, a fixing mechanism 20 is provided that can fix square aluminum alloy railings of different sizes.

[0022] like Figure 5 As shown, the fixing mechanism 20 includes a mounting shell 21 rotatably connected to the limit seat 15, each side of the mounting shell 21 is slidably connected to a telescopic rod 22, each telescopic rod 22 is fixedly connected to a damping block 23 at one end away from the mounting shell 21, and a first spring 24 is sleeved on the periphery of each telescopic rod 22 between the mounting shell 21 and the damping block 23.

[0023] The improvement is that when installing the railing, first push each damping block 23 to drive the telescopic rod 22 to slide in the direction close to the installation shell 21. During this period, each first spring 24 is compressed. After each damping block 23 is inserted into the interior of the railing, the thrust on the damping block 23 is removed, and each damping block 23 is reset under the action of the restoring force of each first spring 24, thereby fixing the railing. In addition, each damping block 23 is fixed by being installed inside the railing. Compared with fixing from the outside of the railing, this fixing method will not block the surface of the railing, avoids the need to adjust the fixing position to polish the blocked part, and improves the efficiency of the surface treatment of the railing.

[0024] When the size of the aluminum alloy railing to be surface treated is different, the distance from the bottom of the polishing mechanism 30 after the railing is fixed will also be different. Therefore, a polishing mechanism 30 capable of adjusting the distance from the bottom to the aluminum alloy railing is provided.

[0025] Figure 6 It is shown that the polishing mechanism 30 includes a pair of positioning bolts 31 symmetrically arranged on one side of the installation box 12 from top to bottom, a positioning rod 32 is fixedly connected between the two positioning bolts 31, an electric push rod 33 is provided on the positioning rod 32, the fixed end of the electric push rod 33 is slidably connected to the positioning rod 32, the movable end of the electric push rod 33 is fixedly connected to the positioning bolt 31, the movable end of the electric push rod 33 is fixedly connected to a lifting seat 34 on the side away from the installation box 12, the lifting seat 34 is provided with a support seat 35 on the side away from the electric push rod 33, a driving motor 36 is provided on the top of the support seat 35, a polishing disc 37 is provided below the support seat 35, and the polishing disc 37 is coaxially connected to the output shaft of the driving motor 36.

[0026] The improvement lies in that after the aluminum alloy railing is fixed between the two limit seats 15, the electric push rod 33 is started, and the movable end of the electric push rod 33 is extended and retracted, driving the electric push rod 33 to slide up and down along the positioning rod 32, thereby adjusting the distance from the support seat 35 to the aluminum alloy railing. After the distance is adjusted, the power supply of the drive motor 36 is started, and the drive motor 36 drives the polishing disk 37 to rotate, so as to grind and polish the surface of the aluminum alloy railing that contacts the polishing disk 37.

[0027] When the drive motor 36 drives the polishing disc 37 to rotate, the energy generated by the vibration will cause the polishing disc 37 to vibrate during the rotation, thereby affecting the polishing accuracy of the aluminum alloy railing. Therefore, an adaptation mechanism 40 capable of absorbing the energy generated by the vibration of the drive motor 36 is provided.

[0028] like Figure 7 As shown, the specific structure of the adaptation mechanism 40 is disclosed below. The adaptation mechanism 40 includes a buffer groove 41 opened on one side of the lifting seat 34 and a buffer bolt 42 fixedly connected to one side of the support seat 35. A guide rod 43 is fixedly connected in the buffer groove 41. The buffer bolt 42 is slidably connected to the guide rod 43. The outer periphery of the guide rod 43 is sleeved with a second spring 44 on both the upper and lower sides of the buffer bolt 42. Moreover, during the process of the driving motor 36 driving the polishing disc 37 to rotate, the energy generated by the vibration of the driving motor 36 is transmitted to the second spring 44 and converted into the elastic potential energy of the second spring 44 for storage, thereby reducing the amplitude of the vibration of the polishing disc 37 during the process of polishing the railing. In addition, after the positioning adjustment mechanism 50 drives the railing to flip so that the height of the support seat 35 rises, the second springs 44 on both sides of the buffer bolt 42 are deformed. After the polishing of this stage is completed, the positioning adjustment mechanism 50 drives the railing to continue to flip, and the support seat 35 is reset under the action of the restoring force of the second spring 44 after deformation, thereby shortening the distance between the bottom of the polishing disc 37 and the surface of the aluminum alloy railing.

[0029] In order to improve the polishing efficiency, the existing aluminum alloy railing polishing device usually sets the fixing mechanism 20 on the flipping mechanism so that multiple surfaces can be polished without disassembling the railing. However, for railings with non-circular cross-sections, due to the different distances from the polishing mechanism 30 at different positions, it is difficult to adjust the distance from the polishing mechanism 30 to the railing surface in real time and synchronously during the railing flipping process. This leads to uneven polishing at different positions of the railing, excessive polishing at some positions and thinning of the thickness, which affects the strength and service life of the railing; insufficient polishing at some positions makes it difficult to completely remove the rust and unevenness on the railing surface, which affects the appearance quality. Therefore, a positioning adjustment mechanism 50 is provided that can automatically adjust the distance between the polishing disc 37 and the top of the railing according to the height of the top of the railing.

[0030] Figure 8 The specific structure of the positioning adjustment mechanism 50 is disclosed. The positioning adjustment mechanism 50 includes a rotating rod 51 coaxially connected to one side of the mounting shell 21, a positioning wheel 52 is coaxially connected to the rotating rod 51, a plurality of protrusions 53 are arranged on the periphery of the positioning wheel 52, a recess is arranged between two adjacent protrusions 53, an adjusting rod 54 is arranged above the positioning wheel 52, one end of the adjusting rod 54 away from the positioning wheel 52 is fixedly connected to the support seat 35, a stepping motor 55 is arranged on the side of the limiting seat 15 away from the positioning wheel 52, and the positioning wheel 52 is coaxially connected to the stepping motor 55; That is to say, after the polishing disc 37 completes polishing of a plane of the aluminum alloy railing, the stepper motor 55 drives the positioning wheel 52 to rotate a certain angle (usually 45° or 315°), and the adjusting rod 54 originally in the recessed part of the positioning wheel 52 contacts the protrusion 53 and is gradually lifted up by the protrusion 53. After the adjusting rod 54 is pushed to the highest point, it remains stationary, and the straight lines where the protrusions 53 are located are all horizontal with the straight lines where the rounded corners of the aluminum alloy railing are located. At this time, the rounded corners of the aluminum alloy railing are facing upward, thereby achieving: no matter whether the plane of the railing is facing upward or the rounded corners are facing upward, the polishing degree of the railing by the polishing disc 37 is consistent. During the rotation of the positioning wheel 52, from the protrusion 53 to the recessed part, and then to the protrusion 53, the rotation angle of the positioning wheel 52 is 45° or 315°, so that the flipping angle of the railing is determined according to the rotation angle of the positioning wheel 52.

[0031] It should be noted that the material of the positioning wheel 52 is polyurethane rubber, and the material of the adjusting rod 54 is metal, and the surface is frosted; when the rubber and metal are in contact and stationary, they can generate a large static friction force to prevent the two from slipping when the protrusion 53 lifts the adjusting rod 54, and according to the friction principle: the sliding friction force is less than the maximum static friction force, thereby ensuring that relative sliding can occur between the positioning wheel 52 and the adjusting rod 54.

[0032] In order to prevent the railing from turning over due to the driving force generated by the polishing disc 37 during the polishing process of the aluminum alloy railing, thereby affecting the polishing accuracy, a ratchet mechanism 60 is provided to prevent the railing from turning over during the polishing process.

[0033] like Fig. 9 As shown, the ratchet mechanism 60 includes a limit ring 61 coaxially connected to the periphery of the rotating rod 51, and the inner circle of the limit ring 61 is provided with a plurality of ratchet pawls 63. The ratchet mechanism 60 also includes a ratchet tooth 62 rotatably connected to the rotating rod 51, and the ratchet tooth 62 is engaged with one of the ratchet pawls 63.

[0034] The improvement is that when the rotating rod 51 rotates in the allowed direction, the pawl 63 keeps in contact with the ratchet 62, but does not hinder the rotation of the rotating rod 51. At this time, the pawl 63 will slide on the ratchet 62; when the rotating rod 51 tries to rotate in the opposite direction, the pawl 63 will immediately get stuck in the tooth groove of the ratchet 62, preventing the rotation of the rotating rod 51. The meshing of the pawl 63 and the tooth groove of the ratchet 62 generates sufficient friction and resistance, so that the rotating rod 51 cannot rotate in the opposite direction.

[0035] In summary, the working principle of this solution is as follows: first, the damping blocks 23 are inserted into both ends of the aluminum alloy railing, the railing to be polished is fixed under the polishing disc 37, and the electric push rod 33 adjusts the height of the support seat 35 so that the bottom of the polishing disc 37 contacts the railing, thereby grinding and polishing the surface of the railing; During the process of polishing the surface of the railing by the polishing disc 37, the energy generated by the vibration when the driving motor 36 is working is absorbed by the first spring 24. When one of the surfaces of the railing is polished, the rotating rod 51 is driven to rotate by the stepping motor 55, thereby driving the railing to flip over a certain angle (usually 45° or 315°). During the flipping of the railing, the adjusting rod 54 originally in the recessed part of the positioning wheel 52 contacts the protrusion 53 and is gradually lifted up by the protrusion 53. After the adjusting rod 54 is pushed to the highest point, it remains stationary, and the straight lines where the protrusions 53 are located are all horizontal with the straight lines where the rounded corners of the aluminum alloy railing are located. At this time, the rounded corners of the aluminum alloy railing are facing upward, thereby achieving: no matter whether the plane of the railing is facing upward or the rounded corners are facing upward, the polishing degree of the railing by the polishing disc 37 is consistent. During the rotation of the positioning wheel 52, from the protrusion 53 to the recessed part, and then to the protrusion 53, the rotation angle of the positioning wheel 52 is 45° or 315°, so that the flipping angle of the railing is determined according to the rotation angle of the positioning wheel 52.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A surface treatment device for aluminum alloy railing production, characterized in that: The operating table (11) comprises an operating table (11), wherein a polishing component is provided on the top of the operating table (11), wherein the polishing component comprises an installation box (12) installed on one side of the operating table (11), wherein a pair of symmetrically arranged limit seats (15) are slidably connected to the top of the operating table (11), wherein the two limit seats (15) are rotatably connected to a fixing mechanism (20) on a side close to each other, wherein a polishing mechanism (30) is installed on a side of the installation box (12) close to the fixing mechanism (20), wherein an adaption mechanism (40) is provided between the installation box (12) and the polishing mechanism (30), wherein a positioning adjustment mechanism (50) is coaxially connected between one of the fixing mechanisms (20) and the limit seat (15), and a ratchet mechanism (60) is coaxially connected to one side of the other fixing mechanism (20); The two fixing mechanisms (20) are used to fix the railing to be polished below the polishing mechanism (30); the polishing mechanism (30) is used to grind and polish the surface of the railing; during the process of the polishing mechanism (30) polishing the surface of the railing, the adapting mechanism (40) is used to absorb the energy generated by the vibration of the polishing mechanism (30); the positioning and adjusting mechanism (50) is used to flip the railing to be polished; during the process of flipping the railing, the positioning and adjusting mechanism (50) can locate the flipping angle of the railing, and the positioning and adjusting mechanism (50) can adjust the distance between the bottom of the polishing mechanism (30) and the railing; and the adapting mechanism (40) can drive the polishing mechanism (30) to reset after displacement.

2. The surface treatment device for aluminum alloy railing production according to claim 1 is characterized in that: A ventilation cavity (13) is provided at the bottom of the installation box (12), and a smoke collecting box (14) is provided on a side of the ventilation cavity (13) away from the operating table (11).

3. The surface treatment device for aluminum alloy railing production according to claim 1 is characterized in that: The fixing mechanism (20) comprises a mounting shell (21) rotatably connected to the limit seat (15); each side of the mounting shell (21) is slidably connected to a telescopic rod (22); each telescopic rod (22) is fixedly connected to a damping block (23) at one end away from the mounting shell (21); and a first spring (24) is sleeved on the periphery of each telescopic rod (22) between the mounting shell (21) and the damping block (23).

4. The surface treatment device for aluminum alloy railing production according to claim 1 is characterized in that: The polishing mechanism (30) comprises a pair of positioning bolts (31) symmetrically arranged on one side of the installation box (12) from top to bottom, a positioning rod (32) being fixedly connected between the two positioning bolts (31), an electric push rod (33) being arranged on the positioning rod (32), a fixed end of the electric push rod (33) being slidably connected to the positioning rod (32), a movable end of the electric push rod (33) being fixedly connected to the positioning bolt (31), a lifting seat (34) being fixedly connected to the side of the movable end of the electric push rod (33) away from the installation box (12), a support seat (35) being arranged on the side of the lifting seat (34) away from the electric push rod (33), a driving motor (36) being arranged on the top of the support seat (35), a polishing disc (37) being arranged below the support seat (35), and the polishing disc (37) being coaxially connected to the output shaft of the driving motor (36).

5. The surface treatment device for aluminum alloy railing production according to claim 4 is characterized in that: The adapting mechanism (40) comprises a buffer groove (41) provided on one side of the lifting seat (34) and a buffer bolt (42) fixedly connected to one side of the supporting seat (35); a guide rod (43) is fixedly connected in the buffer groove (41); the buffer bolt (42) is slidably connected to the guide rod (43); and a second spring (44) is sleeved on both upper and lower sides of the buffer bolt (42) around the periphery of the guide rod (43).

6. The surface treatment device for aluminum alloy railing production according to claim 4 is characterized in that: The positioning adjustment mechanism (50) comprises a rotating rod (51) coaxially connected to one side of the mounting shell (21); a positioning wheel (52) is coaxially connected to the rotating rod (51); a plurality of protrusions (53) are arranged on the periphery of the positioning wheel (52); a recess is arranged between two adjacent protrusions (53); an adjustment rod (54) is arranged above the positioning wheel (52); an end of the adjustment rod (54) away from the positioning wheel (52) is fixedly connected to a support seat (35); a stepping motor (55) is arranged on a side of the limiting seat (15) away from the positioning wheel (52); and the positioning wheel (52) and the stepping motor (55) are coaxially connected.

7. The surface treatment device for aluminum alloy railing production according to claim 6 is characterized in that: The ratchet mechanism (60) comprises a limit ring (61) coaxially connected to the periphery of the rotating rod (51), the inner ring of the limit ring (61) being provided with a plurality of ratchet pawls (63), and the ratchet mechanism (60) further comprises a ratchet tooth (62) rotatably connected to the rotating rod (51), the ratchet tooth (62) being engaged with one of the ratchet pawls (63).

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