An advertising design sign corner processing trimmer

Abstract

This invention discloses an edge trimming machine for advertising signage, relating to the field of advertising signage processing. It includes a frame, a position adjustment unit, and a plasma arc cutting component. The upper end of the frame is equipped with a position adjustment unit that drives the plasma arc cutting component to move along the XYZ axes. The upper end of the C-shaped frame contains a first damping mechanism driven by an air-storage mechanism. This first damping mechanism includes an upper damping roller slidably disposed inside a fixed cylinder, with its bottom fitting against the top edge of the advertising signage. This edge trimming machine for advertising signage utilizes an integrated structural design with adaptive clamping, negative pressure adsorption to prevent waste material bending, and dual damping shock absorption. The air-storage mechanism, in conjunction with the first and second damping mechanisms, forms a dual damping effect of gas damping and airbag elastic damping, effectively suppressing vibration resonance generated by plasma arc cutting and preventing processing deviations in the finished product area due to resonance.

Description

Technical Field

[0001] This invention relates to the technical field of advertising sign processing, specifically to an edge trimming machine for advertising sign edges. Background Technology

[0002] After the advertising signage (metal, aluminum composite panel, etc.) is processed, burrs, warping and irregular defects often remain on the edges and corners. Edge trimming is required to ensure appearance and safety. When processing the edges and corners of the advertising signage, a plasma arc cutting machine can be used to trim the edges.

[0003] Existing plasma arc cutting methods for metal materials are inefficient and involve cumbersome processes. To address these issues, a high-precision plasma arc cutting machine can be described using existing technology (Chinese patent application number CN202122015951.4, application date August 25, 2021). This device features a limiting rod to restrict the position of the control block, an adjusting groove to adjust the positions of the control block and support rod in conjunction with the extrusion wheel, an electric push rod to adjust the position of the extrusion wheel, a threaded rod to adjust the positions of the threaded sleeve and clamping plate in conjunction with a motor, bolts to facilitate user adjustment of the pressure block's height, and a slider and groove to facilitate the use of the threaded sleeve. Referring to the prior art (Chinese patent application number CN201621041113.7, application date August 30, 2016), a metal copper tube arc cutting device is disclosed. This device can easily support the first fixed seat and the second fixed seat through the base plate; the first fixed seat can easily fix and install the first support plate through the first fixed seat, and the second fixed seat can easily fix and install the second support plate through the second fixed seat; the first support plate and the second support plate can easily support the guide plate, and the metal copper tube to be processed can be fitted between the first collar and the second collar; the first slide and the second slide can slide along the guide plate to facilitate the movement and adjustment of the plasma arc cutting machine, and the plasma arc cutting machine can easily perform arc cutting on the metal copper tube through the arc cutting head.

[0004] Although the above-mentioned device can improve the cutting efficiency of metal materials, when performing plasma arc cutting and trimming on metal advertising signs, it is necessary to ensure that the bottom of the cutting position is suspended. After the advertising board is cut, especially when it reaches the end, the interference of the weight of the waste material can easily cause the advertising board and the waste material to bend and break, thus requiring multiple trimming processes.

[0005] Therefore, we propose an edge trimming machine for advertising signage to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an edge trimming machine for advertising signage, in order to solve the problem mentioned in the background art that current edge trimming machines on the market need to ensure that the bottom of the cutting position is suspended when performing plasma arc cutting and trimming on metal advertising signage. After cutting the advertising board, especially at the end, the advertising board is easily bent and broken due to the interference of the gravity of the waste material, thus requiring multiple edge trimming processes.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an edge trimming machine for advertising signage, comprising a frame, a position adjustment unit, and a plasma arc cutting component. The upper end of the frame is equipped with a position adjustment unit that drives the plasma arc cutting component to move along the XYZ axes. A support plate is fixedly installed on the inner side of the frame. An adapter mechanism for driving two sets of C-shaped frames to move relative to each other is installed at the bottom center of the support plate. Several sets of lower damping rollers for supporting the bottom of the advertising signage are installed at equal intervals on the C-shaped frames. Electric push rods are fixedly installed on both the front and rear sides. The output end of the electric push rod is fixedly connected to a crossbar. A negative pressure plate for adsorbing and fixing the waste material to be cut from the advertising design sign is installed on the top of the crossbar. The negative pressure plate is connected to a negative pressure adsorption mechanism. An air storage mechanism is provided on one side of the crossbar. A first shock absorption mechanism driven by the air storage mechanism is provided inside the upper end of the C-shaped frame. The first shock absorption mechanism includes an upper damping roller that is slidably disposed inside the fixed cylinder. The bottom of the upper damping roller is attached to the top edge of the advertising design sign.

[0008] Preferably, the adapter mechanism includes a drive component fixed to the bottom of the support plate. The drive component is a drive motor. The output end of the drive motor is fixedly connected to a disk. The edge of the disk is rotatably connected to a connecting rod. The end of the connecting rod away from the disk is rotatably connected to the bottom of the C-shaped frame.

[0009] Preferably, the outer side of the C-shaped frame is slidably connected to the inside of the support plate, the two sets of C-shaped frames are arranged to move relative to each other, and the advertising design sign is placed on the inner side of the two sets of C-shaped frames.

[0010] Preferably, the negative pressure adsorption mechanism includes a pipe inside the crossbar, the outer end of the pipe is connected to an air pipe connector, the air pipe connector is connected to an external air pump, the pipe is connected to the bottom of the negative pressure plate, and the length of several sets of negative pressure plates is shorter than the width of the advertising sign.

[0011] Preferably, the air storage mechanism includes two sets of piston rods fixed to the outer end of the crossbar, and the outer end of the piston rods is slidably connected to the cavity inside the side of the bearing plate.

[0012] Preferably, a one-way air inlet valve is provided in the cavity on the side of the bearing plate so that the end of the cavity away from the piston rod can be connected to the upper end of the C-shaped frame through an air supply hose for subsequent air storage treatment.

[0013] Preferably, the first damping mechanism further includes several sets of fixed cylinders fixed inside the upper end of the C-shaped frame. A piston rod is slidably connected to the bottom outer side of the fixed cylinder. The piston rod and the fixed cylinder are connected by a connecting spring. The upper damping roller is installed at the bottom of the piston rod. A second damping mechanism is provided on the inner side of the upper damping roller.

[0014] Preferably, the number of lower damping rollers is the same as the number of upper damping rollers, and the bottom of the upper damping rollers is fitted to the top of the advertising sign.

[0015] Preferably, the second damping mechanism includes a pressure valve disposed at one end of the piston rod located inside the fixed cylinder. The piston rod and the shaft end of the upper damping roller are both hollow and interconnected. The upper damping roller has several sets of air supply channels inside, which are connected to wear-resistant airbags. The wear-resistant airbags are fitted inside the upper damping roller.

[0016] Preferably, a vent is provided on the outer side of the upper damping roller; a conical channel is provided in the middle of the air supply channel, and a conical air-blocking block is slidably connected inside the conical channel by a spring. The small end face of the conical air-blocking block fits against the small end face of the conical channel, and a top block is fixed on one side of the conical air-blocking block at the large end of the conical channel to facilitate air supply; the wear-resistant airbag is made of elastic rubber.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: This advertising sign corner trimming machine, through its integrated structural design of adaptive clamping, negative pressure adsorption to prevent waste bending, and dual damping shock absorption, solves the industry pain points of traditional plasma arc trimming machines, such as the bottom of the cutting position being suspended, the waste material at the end being pulled by gravity causing the sign and waste material to bend and break, and the need for multiple trimming due to resonance caused by cutting vibration; the negative pressure plate accurately adsorbs the area of ​​waste material to be cut, continuously providing stable traction at the cutting end, completely eliminating the problems of bending, burrs, and abnormal breakage caused by the gravity of waste material, and achieving one-time corner cutting and forming; the air storage mechanism, in conjunction with the first and second shock absorption mechanisms, forms a dual shock absorption effect of gas damping and airbag elastic damping, effectively suppressing the vibration resonance generated by plasma arc cutting, and avoiding processing deviations in the finished product area due to resonance; the specific details are as follows: 1. An electric push rod drives a crossbar to precisely fit the negative pressure plate against the area of ​​the sign to be cut. With the help of an external air pump, stable negative pressure adsorption is achieved. The waste end is fixed and pulled throughout the plasma arc cutting process, eliminating the pulling force of the waste's own weight on the cutting end and preventing abnormal breakage or warping of the sign and waste. The adapter mechanism drives two sets of C-shaped frames to move relative to each other, which can quickly adapt to the clamping of metal advertising signs of different widths and thicknesses. The lower damping roller evenly supports the bottom of the sign, ensuring the required suspension state at the cutting position and preventing the sign from shaking or shifting during transportation, ensuring that the cutting path is accurate and controllable. 2. The air storage mechanism delivers the air pressure generated by the movement of the crossbar into the fixed cylinder, driving the upper damping roller to conform to the top of the sign and form gas damping. In conjunction with the pressure valve, the wear-resistant airbag is inflated to form elastic damping. The dual damping works synergistically to efficiently absorb the vibration energy generated by plasma arc cutting and prevent resonance displacement in the finished sign area. The upper and lower damping rollers symmetrically clamp the edge of the sign, ensuring stable delivery while avoiding rigid contact that could scratch the sign surface and ensuring the integrity of the sign's appearance. The shock absorption structure effectively reduces the impact of cutting vibration on the plasma arc-cut parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 3 This is a side view of the bearing plate structure of the present invention; Figure 4 This is a bottom view of the drive component structure of the present invention; Figure 5 This is a top view of the negative pressure disk structure of the present invention; Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 7 This is a side view of the C-shaped frame structure of the present invention; Figure 8 This is a schematic diagram of the main cross-sectional structure of the fixed cylinder of the present invention; Figure 9 This is a schematic diagram of the main cross-sectional structure of the damping roller of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Frame; 2. Position adjustment unit; 3. Plasma arc cutting component; 4. Bearing plate; 5. Drive component; 6. Connecting rod; 7. C-shaped frame; 8. Electric push rod; 9. Crossbar; 10. Air pipe connector; 11. Negative pressure plate; 12. Piston rod; 13. Air supply hose; 14. Lower damping roller; 15. Fixed cylinder; 16. Piston vertical rod; 161. Extrusion block; 17. Connecting spring; 18. Pressure valve; 19. Upper damping roller; 191. Air supply channel; 1911. Conical channel; 1912. Conical air block; 1913. Top block; 192. Wear-resistant airbag; 20. Vent nozzle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 The present invention provides the following technical solution: an edge trimming machine for advertising design signs.

[0022] Example 1: Currently, when using plasma arc cutting to trim metal advertising signs, edge trimming machines on the market require ensuring that the bottom of the cutting position is suspended. After cutting the advertising board, especially towards the end, the weight of the scrap material easily causes the advertising board to bend and break, necessitating multiple trimming processes. See attached [reference needed]. Figure 1 - Appendix Figure 6The system includes a frame 1, a position adjustment unit 2, and a plasma arc cutting component 3. The upper end of the frame 1 is equipped with a position adjustment unit 2 that drives the plasma arc cutting component 3 to move along the XYZ axes. A support plate 4 is fixedly installed on the inner side of the frame 1. An adapter mechanism for driving the relative movement of two sets of C-shaped frames 7 is installed at the bottom center of the support plate 4. Several sets of lower damping rollers 14 for supporting the bottom of the advertising sign are installed at equal intervals on the C-shaped frames 7. Electric push rods 8 are fixedly installed on both the front and rear sides of the frame 1. A crossbar 9 is fixedly connected to the output end of the electric push rod 8. A negative pressure plate 11 for adsorbing and fixing the waste area of ​​the advertising sign to be cut is installed on the top of the crossbar 9. The negative pressure plate 11 is connected to a negative pressure adsorption mechanism. An air storage mechanism is provided on one side of the crossbar 9. The adapter mechanism includes a drive component 5 fixed to the bottom of the support plate 4. The drive component 5 is a drive motor, and a disc is fixedly connected to the output end of the drive motor. A connecting rod 6 is rotatably connected to the edge of the disc, and the end of the connecting rod 6 away from the disc is rotatably connected to the bottom of the C-shaped frame 7; the outer side of the C-shaped frame 7 is slidably connected to the inside of the support plate 4, and the two sets of C-shaped frames 7 are arranged in a relatively movable manner, with the advertising design sign placed on the inner side of the two sets of C-shaped frames 7; the negative pressure adsorption mechanism includes a pipe opened inside the crossbar 9, the outer end of the pipe is connected to an air pipe connector 10, the air pipe connector 10 is connected to an external air pump, and the pipe is connected to the bottom of the negative pressure plate 11, the length of several sets of negative pressure plates 11 is shorter than the width of the advertising design sign; the air storage mechanism includes two sets of piston rods 12 fixed to the outer end of the crossbar 9, the outer end of the piston rod 12 is slidably connected to the cavity on the side of the support plate 4; a one-way air inlet valve is provided in the cavity on the side of the support plate 4, so that the end of the air storage cavity away from the piston rod 12 is connected to the upper end of the C-shaped frame 7 through the air supply hose 13.

[0023] In use, first activate the drive unit 5, which rotates the disc. The disc, via the connecting rod 6, pushes and pulls the two sets of C-shaped frames 7 to move relative to each other along the support plate 4, thus achieving adaptive clamping and positioning of advertising signs of different specifications. Place the sign inside the two sets of C-shaped frames 7. The lower damping rollers 14 on the C-shaped frames 7 stably support the bottom of the sign, satisfying the process requirement of the bottom of the cutting position being suspended while preventing the sign from slipping. Activate the external air pump, and the gas is delivered to the negative pressure plate 11 through the air pipe connector 10 and the internal pipe of the crossbar 9. The negative pressure plate 11 precisely adsorbs the waste area of ​​the sign, and the cutting position is aligned with... The negative pressure plates 11 are all at a certain gap, and the waste end is fixed throughout the process to counteract the pull of gravity; the electric push rod 8 is started, and the electric push rod 8 drives the crossbar 9 to move smoothly. The piston rod 12 at the outer end of the crossbar 9 slides accordingly, compressing the air in the side cavity of the bearing plate 4. The one-way air inlet valve in the cavity prevents the gas from flowing back, realizing the storage of gas. The gas is delivered to the upper end of the C-shaped frame 7 through the air delivery hose 13 to provide power for the subsequent shock absorption mechanism; the plasma arc cutting part 3 completes the XYZ axis movement under the drive of the position adjustment part 2, stably cutting the corner of the sign. The waste is continuously adsorbed without bending or breaking, realizing one-time trimming and forming.

[0024] Example 2: To avoid resonance on one side of the advertising sign during plasma arc cutting, please refer to the attached... Figure 6 - Appendix Figure 8 The upper end of the C-shaped frame 7 is equipped with a first damping mechanism driven by an air storage mechanism. The first damping mechanism includes an upper damping roller 19 slidably disposed inside a fixed cylinder 15, with the bottom of the upper damping roller 19 attached to the top edge of the advertising sign. The first damping mechanism also includes several sets of fixed cylinders 15 fixed inside the upper end of the C-shaped frame 7. A piston rod 16 is slidably connected to the bottom outer side of the fixed cylinder 15. The piston rod 16 and the fixed cylinder 15 are connected by a connecting spring 17. The upper damping roller 19 is installed at the bottom of the piston rod 16. A second damping mechanism is disposed inside the upper damping roller 19. The number of lower damping rollers 14 is the same as the number of upper damping rollers 19, and the bottom of the upper damping roller 19 is attached to the top of the advertising sign.

[0025] In Embodiment 1, the high-pressure gas generated by the gas storage mechanism is delivered to the fixed cylinder 15 at the upper end of the C-shaped frame 7 via the gas delivery hose 13. The gas pushes the piston rod 16 in the fixed cylinder 15 to slide downward. The connecting spring 17 moves downward and stretches with the piston rod 16, so that the upper damping roller 19 at the bottom of the piston rod 16 fits tightly against the top edge of the sign. The upper damping roller 19 and the lower damping roller 14 are the same in number and correspond to each other, forming a symmetrical clamping support. The air pressure in the fixed cylinder 15 and the piston rod 16 forms gas damping, which can absorb the vibration energy generated by cutting and prevent resonance displacement of the finished sign area. During the smooth movement of the sign with the electric push rod 8, the upper damping roller 19 and the lower damping roller 14 roll synchronously, which not only ensures the smooth delivery of the sign, but also continuously suppresses vibration through gas damping, improves the cutting stability from the structural level, and prevents cutting deviation and edge burrs caused by resonance.

[0026] Example 3: This example differs from Example 2 in that it also discloses another set of damping structures to improve the damping effect. Please refer to the attached document. Figure 8 - Appendix Figure 10The second damping mechanism includes a pressure valve 18 located at one end of the piston rod 16 inside the fixed cylinder 15. Both the piston rod 16 and the upper damping roller 19 have hollow shafts and are interconnected. A compression block 161 is fixed to the side of the piston rod 16 near the upper damping roller 19. The compression block 161 is obliquely positioned and fits against a set of wear-resistant airbags 192. Several sets of air supply channels 191 are opened inside the upper damping roller 19, and these channels are connected to the wear-resistant airbags 192. 92 is fitted inside the upper damping roller 19; an air vent 20 is provided on the outer side of the upper damping roller 19; a conical channel 1911 is provided in the middle of the air supply channel 191, and a conical air block 1912 is slidably connected inside the conical channel 1911 by a spring. The small end face of the conical air block 1912 fits against the small end face of the conical channel 1911, and a top block 1913 is fixed on one side of the large end of the conical channel 1911 to facilitate air supply; the wear-resistant airbag 192 is made of elastic rubber.

[0027] Based on Embodiment 2, this embodiment further enhances the shock absorption effect through a second shock absorption mechanism, improving processing quality and sign protection. When the air pressure inside the fixed cylinder 15 reaches the threshold of the pressure valve 18, the pressure valve 18 automatically opens. Since the center of the air delivery channel 191 is collinear with the center of the upper damping roller 19, the gas will be stably delivered to the interior of the air delivery channel 191. At this time, a conical channel 1911 is provided in the middle of the air delivery channel 191, and a conical air-blocking device is provided inside the conical channel 1911. When the conical air-blocking block 1912 rotates through the upper damping roller 19 and is positioned at the upper end of the upper damping roller 19, the small end face of the conical air-blocking block 1912 will adhere to the small end face of the conical channel 1911 due to gravity. Consequently, part of the conical air-blocking block 1912 will block the air supply channel 191, causing the wear-resistant airbag 192 located below to expand and inflate. 2. Protruding from the surface of the upper damping roller 19, with the horizontal line of the upper damping roller 19 as a reference, the weight of the conical air-blocking block 1912 is greater than the elastic force of the spring. Therefore, the upper semicircular conical air-blocking block 1912 is in an elastic sliding reset blockage or already blocked state. During rotation, the gas inside the wear-resistant airbag 192 is transported to the lower semicircular wear-resistant airbag 192 through the extrusion contact between the wear-resistant airbag 192 and the extrusion block 161, causing the internal gas to flow back into the air delivery channel 191, which facilitates the standard. The wear-resistant airbag 192, which contacts the sign, is filled with gas. The wear-resistant airbag 192 makes flexible contact with the top of the sign, forming elastic damping. Together with the gas damping, it forms a double shock absorption structure to maximize the absorption of cutting vibration. After processing, the gas inside the wear-resistant airbag 192 can be discharged through the vent 20 to restore the initial state. The wear-resistant airbag 192, made of elastic rubber, avoids rigid contact that could scratch the surface of the sign. The synergistic effect of the double damping completely eliminates resonance, further improving the flatness and smoothness of the edge and corner cuts, and is suitable for the fine processing needs of high-end advertising signs.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An advertisement design sign corner processing trimmer, comprising a rack (1), a position adjusting part (2) and a plasma arc cutting part (3), the upper end of the rack (1) is provided with the position adjusting part (2) driving the plasma arc cutting part (3) to move on XYZ axes, characterized in that: A bearing plate (4) is fixedly installed on the inner side of the frame (1). An adapter mechanism for driving the relative movement of two sets of C-shaped frames (7) is installed at the bottom center of the bearing plate (4). Several sets of lower damping rollers (14) for supporting the bottom of the advertising design sign are installed at equal intervals on the C-shaped frame (7). Electric push rods (8) are fixedly installed on both the front and rear sides of the frame (1). A crossbar (9) is fixedly connected to the output end of the electric push rod (8). A negative pressure plate (11) for adsorbing and fixing the waste area to be cut on the advertising design sign is installed on the top of the crossbar (9). The negative pressure plate (11) is connected to a negative pressure adsorption mechanism. An air storage mechanism is provided on one side of the crossbar (9). A first shock absorption mechanism driven by the air storage mechanism is provided inside the upper end of the C-shaped frame (7). The first shock absorption mechanism includes an upper damping roller (19) that is slidably installed inside the fixed cylinder (15). The bottom of the upper damping roller (19) is attached to the top edge of the advertising design sign.

2. The edge trimming machine for advertising signage according to claim 1, characterized in that: The adapter mechanism includes a drive component (5) fixed to the bottom of the support plate (4). The drive component (5) is a drive motor. The output end of the drive motor is fixedly connected to a disc. The edge of the disc is rotatably connected to a connecting rod (6). The end of the connecting rod (6) away from the disc is rotatably connected to the bottom of the C-shaped frame (7).

3. The edge trimming machine for advertising signage according to claim 2, characterized in that: The outer side of the C-shaped frame (7) is slidably connected to the inside of the support plate (4), and the two sets of C-shaped frames (7) are arranged to move relative to each other. The advertising design sign is placed on the inner side of the two sets of C-shaped frames (7).

4. The edge trimming machine for advertising signage according to claim 1, characterized in that: The negative pressure adsorption mechanism includes a pipe inside the crossbar (9), the outer end of the pipe is connected to an air pipe connector (10), the air pipe connector (10) is connected to an external air pump, the pipe is connected to the bottom of the negative pressure plate (11), and the length of several sets of negative pressure plates (11) is shorter than the width of the advertising design sign.

5. The edge trimming machine for advertising signage according to claim 1, characterized in that: The gas storage mechanism includes two sets of piston rods (12) fixed to the outer end of the crossbar (9), and the outer end of the piston rod (12) is slidably connected to the cavity inside the side of the bearing plate (4).

6. The edge trimming machine for advertising signage according to claim 5, characterized in that: A one-way air inlet valve is provided in the cavity on the side of the bearing plate (4) to facilitate the later gas storage process. The end of the cavity away from the piston rod (12) is connected to the upper end of the C-shaped frame (7) through the air supply hose (13).

7. The edge trimming machine for advertising signage according to claim 1, characterized in that: The first damping mechanism also includes several sets of fixed cylinders (15) fixed inside the upper end of the C-shaped frame (7). A piston rod (16) is slidably connected to the bottom outer side of the fixed cylinder (15). The piston rod (16) and the fixed cylinder (15) are connected by a connecting spring (17). The upper damping roller (19) is installed at the bottom of the piston rod (16). A second damping mechanism is provided on the inner side of the upper damping roller (19).

8. The edge trimming machine for advertising signage according to claim 7, characterized in that: The number of the lower damping rollers (14) is the same as the number of the upper damping rollers (19), and the bottom position of the upper damping rollers (19) is attached to the top position of the advertising design sign.

9. The edge trimming machine for advertising signage according to claim 7, characterized in that: The second damping mechanism includes a pressure valve (18) located at one end of the piston rod (16) inside the fixed cylinder (15). The piston rod (16) and the shaft end of the upper damping roller (19) are both hollow and interconnected. The upper damping roller (19) has several sets of air supply channels (191) inside. The air supply channels (191) are connected to the wear-resistant airbag (192). The wear-resistant airbag (192) is fitted inside the upper damping roller (19).

10. The edge trimming machine for advertising signage according to claim 9, characterized in that: A vent (20) is provided on the outer side of the upper damping roller (19); a compression block (161) is fixed on the side of the piston rod (16) near the upper damping roller (19). The compression block (161) is obliquely arranged and fits against a set of wear-resistant airbags (192). A conical channel (1911) is opened in the middle of the air supply channel (191). A conical air-blocking block (1912) is slidably connected inside the conical channel (1911) by a spring. The small end face of the conical air-blocking block (1912) fits against the small end face of the conical channel (1911). A top block (1913) is fixed on one side of the large end of the conical channel (1911) of the conical air-blocking block (1912) to facilitate air supply. The wear-resistant airbag (192) is made of elastic rubber.

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