pneumatic strapping machine

Abstract

This invention relates to the field of strapping machine technology, including a strapping machine, a strapping mechanism, a first positioning mechanism, and a second positioning mechanism. The first positioning mechanism enables the strapping of both ends of a sheet material to be of equal length and weight, ensuring that the straps at both ends experience the same force, thus improving the stability of the strapped material and preventing one end from breaking open. It also reduces the risk of the material shifting or tilting during transportation, thereby reducing wear and damage. The second positioning mechanism evenly distributes the length of the straps, preventing uneven lengths during bending and ensuring consistent stress distribution at both ends, thus extending the service life of the straps. The strapping machine can quickly strap a large number of sheets, and the strapping mechanism can adapt to straps of different widths and thicknesses, meeting various strapping needs.

Description

Technical Field

[0001] This invention relates to the field of strapping machines, specifically a pneumatic strapping machine. Background Technology

[0002] Pneumatic strapping machines for sheet metal are efficient and reliable packaging equipment, mainly used by steel and non-ferrous metal companies to strap various specifications of pipes, sheets, profiles and ingots. Pneumatic strapping machines for sheet metal typically adopt a modular design, are small in size and light in weight, and are easy to operate in limited spaces. At the same time, by changing different parts, they can adapt to steel strips of different widths and thicknesses to meet various strapping needs.

[0003] Therefore, based on existing strapping machines, the choice of strapping position directly affects the stability and safety of the board material in practical applications. If the strapping position is not chosen properly, the board material may move or tilt during transportation, thereby increasing the risk of wear and damage. At the same time, the length of the strapping directly affects its load-bearing capacity and stability. Longer strapping may be more prone to deformation or breakage when bent because the stress distribution of a long strapping is wider during bending, which may lead to local stress concentration and reduce its overall strength. Conversely, shorter strapping may maintain the stability and integrity of its shape better because the stress area is relatively concentrated. However, in the actual use of strapping, it is impossible to accurately distribute the length of the two ends of the strapping, resulting in one end being shorter than the other during bending and use, which affects the service life of the strapping. To address this, we propose a pneumatic strapping machine. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a pneumatic strapping machine that offers advantages such as high stability after strapping, and solves a series of problems such as loose strapping.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic strapping machine, comprising, A strapping machine is used for strapping boards. The strapping machine includes two strapping shells. A booster cylinder is fixedly installed on the top of the strapping shell, and an auxiliary cylinder is fixedly installed on the top of the strapping shell. A strapping mechanism for bending strapping strips includes a base plate fixedly connected to the top of the inner wall of a strapping shell, two side push plates slidably connected to the top of the base plate, two first mounting plates fixedly connected to the top of the base plate, a second mounting plate fixedly connected to the opposite side of each of the two first mounting plates, a mounting shell fixedly connected to the top of the second mounting plate, a limit plate fixedly connected to the top of the mounting shell, a strapping strip placed inside the limit plate, and a bending plate rotatably connected to the adjacent ends of the two mounting shells. A first positioning mechanism is used to automatically adjust the position of the sheet metal. The first positioning mechanism includes a hydraulic telescopic column fixedly connected to the bottom of the inner wall of the bundling shell. A support plate is fixedly connected to the extended end of the hydraulic telescopic column. A rotating roller is rotatably connected to the top of the support plate. A vision sensor is fixedly installed on one side of the inner wall of the bundling shell. The second positioning mechanism is used to automatically adjust the position of the tie strip, and the second positioning mechanism includes a tie strip roller rotatably connected to the top of the mounting housing.

[0006] Preferably, the output ends of both the booster cylinder and the auxiliary cylinder extend into the interior of the binding shell. The output end of the booster cylinder is fixedly connected to a first fixing block, and the output end of the auxiliary cylinder is fixedly connected to a second fixing block. The two binding shells are fixedly connected to the same base plate on opposite sides.

[0007] Preferably, a side-push cylinder is fixedly installed at the bottom of the second mounting plate, the output end of the side-push cylinder is fixedly connected to the side-push plate, and a stop plate is also fixedly connected at the bottom of the second mounting plate, one side of the stop plate abutting against the side-push cylinder.

[0008] Preferably, a first rotating frame and a second rotating frame are fixedly connected to the bottom of the inner wall of the mounting shell, a bending cylinder is rotatably connected to the top of the second rotating frame, a connecting block is fixedly connected to the extension end of the bending cylinder, a connecting plate is rotatably connected to the top of the second rotating frame, the connecting plate is rotatably connected inside the connecting block, and the bending plate is fixedly connected to the connecting plate.

[0009] Preferably, the second positioning mechanism further includes a clearance groove formed on the top of the mounting housing, the tie strip roller rotates inside the clearance groove, a tie strip detection housing is fixedly connected to the top of the inner wall of the mounting housing, a tie strip pressure sensor is fixedly installed on the bottom of the inner wall of the tie strip detection housing, a roller frame is fixedly connected to the detection end of the tie strip pressure sensor, and the tie strip roller is rotatably connected to the top of the roller frame.

[0010] Preferably, a first drive motor is fixedly installed on the top of the inner wall of the mounting shell, and a first sprocket is fixedly sleeved on both the output end of the first drive motor and the middle of the tie rod roller, and the same first chain is rotatably sleeved on the outside of the two first sprockets.

[0011] Preferably, the first positioning mechanism further includes an execution frame fixedly connected to the top of the support plate. Plate pressure sensors are fixedly installed on both sides of the execution frame. A sliding block is fixedly connected to the detection end of the plate pressure sensor. The sliding block is slidably connected inside the execution frame. The two sliding blocks are rotatably connected to the same rotating rod inside. The rotating roller is fixedly sleeved on the outside of the rotating rod.

[0012] Preferably, a second drive motor is fixedly installed on the top of the support plate, and a second sprocket is fixedly sleeved on both the output end of the second drive motor and the outside of the rotating rod. The same second chain is rotatably sleeved on the outside of both second sprockets.

[0013] Preferably, two guide plates are fixedly connected to the top of the second mounting plate.

[0014] Compared with the prior art, the present invention provides a pneumatic strapping machine, which has the following beneficial effects: This invention, through the first positioning mechanism, can bind the two ends of the board with equal length and weight, so that the binding strips at both ends are subjected to the same force, thereby improving the stability of the board after binding and preventing the binding strips at one end from breaking. At the same time, it reduces the risk of the board moving or tilting during transportation, thereby reducing the risk of wear and damage to the board.

[0015] The invention, through its first positioning mechanism, can also visually move the position of the boards when their shapes are different, resulting in uneven weight distribution. This improves the stability of the boards during transport after bundling. At the same time, the visual sensor can calculate the perimeter of the board cross-section, so as to quickly select the appropriate length of the binding strip for bundling, thereby improving work efficiency and reducing the generation of binding strip waste.

[0016] 3. The invention, through the setting of the second positioning mechanism, can evenly distribute the length of the binding strip, avoiding the binding strip's load-bearing capacity and stability being affected by one end being shorter than the other during bending and use, thus ensuring that the stress distribution at both ends of the binding strip is consistent and improving the service life of the binding strip.

[0017] 4. This invention can quickly bundle a large number of boards through the set bundling machine, and the set bundling mechanism can adapt to the bundling strips of different widths and thicknesses to meet various bundling needs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the bundling shell portion of the present invention; Figure 3 This is a three-dimensional structural diagram of the side-push cylinder part of the present invention; Figure 4 This is a three-dimensional structural diagram of the bent plate portion of the present invention; Figure 5 This is a three-dimensional structural diagram of the interior of the mounting shell of the present invention; Figure 6 This is a three-dimensional structural diagram of the second positioning mechanism portion of the present invention; Figure 7 for Figure 2 A magnified structural diagram of part A; Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part B; Figure 9 This is a three-dimensional structural diagram of the visual sensor part of the present invention.

[0019] In the diagram: 1. Strapping machine; 2. Strapping shell; 3. Strapping mechanism; 4. First positioning mechanism; 5. Second positioning mechanism; 6. Base plate; 7. Pressure boosting cylinder; 8. First fixing block; 9. Auxiliary cylinder; 10. Second fixing block; 11. Base plate; 12. First mounting plate; 13. Second mounting plate; 14. Side push cylinder; 15. Side push plate; 16. Support plate; 17. Mounting shell; 18. Limiting plate; 19. Guide plate; 20. Bending plate; 21. First rotating frame; 22. Second rotating frame; 23. Bending plate 24. Cylinder; 25. Connecting block; 26. Connecting plate; 27. Clearance groove; 28. Tie strip roller; 29. ​​Tie strip detection shell; 30. Tie strip pressure sensor; 31. Roller frame; 32. First drive motor; 33. First sprocket; 34. First chain; 35. Hydraulic telescopic column; 36. Support plate; 37. Actuator frame; 38. Sliding block; 39. Rotating rod; 40. Rotating roller; 41. Second drive motor; 42. Second sprocket; 43. Second chain; 44. Sheet metal pressure sensor; 45. Vision sensor. 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] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a pneumatic strapping machine.

[0022] In one typical implementation of this application, such as Figure 1-9 As shown, a pneumatic strapping machine includes, The strapping machine 1 is used to strap boards. The strapping machine 1 includes two strapping shells 2. A booster cylinder 7 is fixedly installed on the top of the strapping shell 2. An auxiliary cylinder 9 is fixedly installed on the top of the strapping shell 2. The output ends of the booster cylinder 7 and the auxiliary cylinder 9 extend into the interior of the strapping shell 2. A first fixing block 8 is fixedly connected to the output end of the booster cylinder 7. A second fixing block 10 is fixedly connected to the output end of the auxiliary cylinder 9. The same base plate 6 is fixedly connected to the opposite side of the two strapping shells 2. The binding mechanism 3 is used to bend the binding strip. The binding mechanism 3 includes a base plate 11 fixedly connected to the top of the inner wall of the binding shell 2. Two side push plates 15 are slidably connected to the top of the base plate 11. Two first mounting plates 12 are fixedly connected to the top of the base plate 11. A second mounting plate 13 is fixedly connected to the opposite side of each of the two first mounting plates 12. A side push cylinder 14 is fixedly installed at the bottom of the second mounting plate 13. The output end of the side push cylinder 14 is fixedly connected to the side push plate 15. A stop plate 16 is also fixedly connected to the bottom of the second mounting plate 13. One side of the stop plate 16 abuts against the side push cylinder 14. The top of the second mounting plate 13 is fixedly connected to a mounting shell 17, and the top of the mounting shell 17 is fixedly connected to a limiting plate 18. A tie strip is placed inside the limiting plate 18. A bending plate 20 is rotatably connected to one end of each of the two mounting shells 17. The bottom of the inner wall of the mounting shell 17 is fixedly connected to a first rotating frame 21 and a second rotating frame 22. A bending cylinder 23 is rotatably connected to the top of the second rotating frame 22. A connecting block 24 is fixedly connected to the extension end of the bending cylinder 23. A connecting plate 25 is rotatably connected to the top of the second rotating frame 22. The connecting plate 25 is rotatably connected inside the connecting block 24. The bending plate 20 and the connecting plate 25 are fixedly connected.

[0023] The structure described above allows for the bundling of the sheet metal. Specifically, two binding strips are first placed inside the limiting plate 18, and the sheet metal is placed on top of the two binding strips, which are positioned in the middle of the two binding shells 2. At this time, the booster cylinder 7 is activated, and its output end moves downward, causing the first fixing block 8 to move downward. The first fixing block 8 moves downward and abuts against the top of the sheet metal, causing the sheet metal to move downward. During the downward movement of the sheet metal, the two binding strips at the bottom of the sheet metal are bent under force, forming a U-shape at the top of the base plate 11. At this time, there is a large gap between the two sides of the binding strips and the two sides of the sheet metal. The side push cylinder 14 is then activated. The extension end of the cylinder drives the side push plate 15 to gradually approach the board and bends the binding strip so that the binding strip is close to both sides of the board. When the binding strip is close to both sides of the board, the bending cylinder 23 is activated. The output end of the bending cylinder 23 extends and drives the connecting plate 25 to rotate inside the mounting shell 17. The rotation of the connecting plate 25 drives the bending plate 20 to move, squeezing the top part of the binding strip of the board towards the center of the board, so that the binding strip tilts towards the top of the board. At this time, the auxiliary cylinder 9 is activated to press the second fixing block 10 on the top of the board to reduce the gap between the boards and prevent the board from moving inside the binding strip after binding, which would cause the binding strip to fail.

[0024] The first positioning mechanism 4 is used to automatically adjust the position of the plate. The first positioning mechanism 4 includes a hydraulic telescopic column 34 fixedly connected to the bottom of the inner wall of the binding shell 2. The extension end of the hydraulic telescopic column 34 is fixedly connected to a support plate 35. The top of the support plate 35 is rotatably connected to a roller 39. The first positioning mechanism 4 also includes an execution frame 36 fixedly connected to the top of the support plate 35. Plate pressure sensors 43 are fixedly installed on both sides of the execution frame 36. The detection end of the plate pressure sensor 43 is fixedly connected to a sliding block 37. The sliding block 37 is slidably connected inside the execution frame 36. The inside of the two sliding blocks 37 is rotatably connected to the same rotating rod 38. The roller 39 is fixedly sleeved on the outside of the rotating rod 38. A second drive motor 40 is fixedly installed on the top of the support plate 35. The output end of the second drive motor 40 and the outside of the rotating rod 38 are both fixedly sleeved with a second sprocket 41. The outside of the two second sprockets 41 are both rotatably sleeved with the same second chain 42.

[0025] The aforementioned structure enhances the stability of the bundled panels. Specifically, the choice of binding position directly impacts the stability and safety of the panels. Improper binding can cause the panels to shift or tilt during transport, increasing the risk of wear and damage. More specifically, the panels experience inertial force due to their weight during transport or movement. Symmetrically binding the panels with two binding strips ensures that both strips receive a balanced force, preventing one strip from being subjected to excessive force and causing it to loosen or break. Therefore, after placing the panels on top of the two binding strips, the hydraulic telescopic column 34 is activated. The extended end of the hydraulic telescopic column 34 moves the support plate 35 upwards, and... Roller 39 lifts the sheet material. After lifting, the sheet material pressure sensor 43 can detect whether the sheet material is placed between the two binding shells 2. When the sheet material is not placed between the two binding shells 2, the two second drive motors 40 are activated. The output ends of the two second drive motors 40 drive the second sprocket 41 to rotate. The rotation of the second sprocket 41 drives the second chain 42 to move. The movement of the second chain 42 drives the roller 39 to rotate. The rotation of the roller 39 drives the sheet material to move. During the movement of the sheet material, the sheet material pressure sensor 43 monitors in real time until the sheet material pressure sensors 43 on both sides detect the same value. At this time, it means that the gravity and tension at both ends are the same, so that the strapping strips at both ends are subjected to the same supporting force, which improves the stability of the sheet material after binding.

[0026] A vision sensor 44 is fixedly installed on one side of the inner wall of the binding shell 2.

[0027] By using two opposing vision sensors 44, the position of the boards can be moved visually when the weight cannot be evenly distributed due to the different shapes of the boards, thereby improving the stability of the transport of the boards after bundling. Specifically, when the center of gravity of the board is not in the center, the rotating roller 39 rotates to move the board, but the movement of the board cannot make the values ​​detected by the board pressure sensors 43 on both sides gradually approach each other. It may cause the difference between the values ​​detected by the board pressure sensors 43 on both sides to gradually increase as the board moves. At this time, the two vision sensors 44 are activated and the board pressure sensors 43 are turned off. The vision sensors 44 inside the two bundling shells 2 can accurately know the position of the board on the opposite side of the two bundling shells 2. The two vision sensors 44 detect the distance to the board and drive the two rotating rollers 39 to rotate to move the board to the center of the two bundling shells 2, so that the distance between the board and the two vision sensors 44 is the same, so as to facilitate bundling with straps. More specifically, a proportional control (P-control) strategy can be used. Proportional control is a simple feedback control method that adjusts the control input based on the system deviation (i.e., the difference between the target value and the actual value). The following is a simplified form of the adjustment formula: Let dleft be the distance to the board detected by the left vision sensor 44, dright be the distance to the board detected by the right vision sensor 44, dtarget be the target distance (i.e. the ideal distance between the two vision sensors 44 and the board), and vleft and vright be the adjustment speeds of the left and right rollers 39, respectively.

[0028] The adjustment formula can be expressed as: vleft=kp(dtarget-dleft) vright=kp(dtarget-dright) Where kp is the proportional gain, which is a positive constant used to adjust the strength of the control response.

[0029] In this formula, if dleft is greater than dtarget, then vleft is negative, indicating that the speed of the left roller 39 needs to be reduced; if dleft is less than dtarget, then vleft is positive, indicating that the speed of the left roller 39 needs to be increased. The same applies to the right roller 39.

[0030] To ensure that the distance between the board material and the two vision sensors 44 is the same, the formula can be further adjusted to correlate the adjustment speeds of the two rollers 39, as follows: vleft = kp(dright - dleft) vright = kp(dleft - dright) In this way, when the board is tilted to one side, the roller 39 on the side that is tilted will slow down, while the roller 39 on the other side will accelerate, thereby pushing the board to move towards the target position.

[0031] The second positioning mechanism 5 is used to automatically adjust the position of the tie strip. The second positioning mechanism 5 includes a tie strip roller 27 rotatably connected to the top of the mounting shell 17. The second positioning mechanism 5 also includes a clearance groove 26 opened on the top of the mounting shell 17. The tie strip roller 27 rotates inside the clearance groove 26. A tie strip detection shell 28 is fixedly connected to the top of the inner wall of the mounting shell 17. A tie strip pressure sensor 29 is fixedly installed on the bottom of the inner wall of the tie strip detection shell 28. A roller frame 30 is fixedly connected to the detection end of the tie strip pressure sensor 29. The tie strip roller 27 is rotatably connected to the top of the roller frame 30. A first drive motor 31 is fixedly installed on the top of the inner wall of the mounting housing 17. The output end of the first drive motor 31 and the middle of the tie rod roller 27 are both fixedly sleeved with a first sprocket 32. The two first sprockets 32 are rotatedly sleeved with the same first chain 33.

[0032] Furthermore, in the above-mentioned scheme, the structure described above can improve the service life of the binding strip. Specifically, after the binding strip is placed on top of the limiting plate 18, the binding strip pressure sensor 29 is activated to detect the weight at both ends of the binding strip. When the weight at both ends of the binding strip is inconsistent, the first drive motor 31 is activated. The output end of the first drive motor 31 rotates, driving the first sprocket 32 ​​to rotate. The rotation of the first sprocket 32 ​​drives the first chain 33 to move. The movement of the first chain 33 drives the binding strip roller 27 to rotate. The rotation of the binding strip roller 27 moves the binding strip until the binding strip moves to the middle position of the binding shell 2 and then the first drive motor 31 is turned off. This accurately distributes the length at both ends of the binding strip, making the length at both ends equal during the bending and use process, thus improving the service life of the binding strip and improving the integrity of the binding strip.

[0033] It is worth mentioning that the two vision sensors 44 can detect the perimeter of the board, which facilitates the selection of appropriate binding strips when bundling the board. Specifically, the vision sensors 44 are existing technology that can detect the perimeter of an object through contour detection and feature extraction techniques in vision. The specific steps are as follows: S1. Read the image and convert it to grayscale to reduce computational complexity. Binarize the grayscale image to better identify object outlines. S2. Use the cv2.findContours function to detect contours in the image. This function will return a list of contours, each of which consists of a series of points. S3. For each detected contour, use the cv2.approxPolyDP function to perform polygon approximation to reduce the number of contour points and simplify the contour shape. The epsilon parameter is the accuracy of the approximation, which is a percentage of the contour perimeter. Smaller epsilon values ​​will produce more accurate approximations. S4. Use the cv2.findContours function to calculate the perimeter of each contour, and use the cv2.drawContours function to draw the contour on the original image to visualize the results. This will allow you to calculate the cross-sectional perimeter of the plate and select the appropriate length of tie rod.

[0034] More specifically, the cv2.arcLength function is used to calculate the perimeter of a contour, and the cv2.approxPolyDP function is used for polygon approximation of the contour. By adjusting the value of epsilon, the accuracy of the approximation can be controlled. This method can effectively detect and calculate the perimeter of objects in an image and is suitable for various application scenarios that require object size measurement.

[0035] The top of the second mounting plate 13 is fixedly connected to two guide plates 19, which can guide and protect the descending plate, and prevent the plate from being damaged due to hard contact with other equipment.

[0036] Working principle of the invention: During use, two straps are first placed inside the limiting plate 18. After the straps are placed on the top of the limiting plate 18, the strap pressure sensor 29 is activated to detect the weight at both ends of the strap. When the weights at both ends of the strap are inconsistent, the first drive motor 31 is activated. The output end of the first drive motor 31 rotates, driving the first sprocket 32 ​​to rotate. The rotation of the first sprocket 32 ​​drives the first chain 33 to move. The movement of the first chain 33 drives the strap roller 27 to rotate. The rotation of the strap roller 27 moves the strap until the strap moves to the middle position of the binding shell 2. Next, place the board on top of the two strapping strips. At this time, activate the hydraulic telescopic column 34. The extension end of the hydraulic telescopic column 34 drives the support plate 35 to move upward and lifts the board through the rotating roller 39. After the board is lifted, the board pressure sensor 43 can detect whether the board is placed in the middle of the two strapping shells 2. When the board is not placed in the middle of the two strapping shells 2, activate the two second drive motors 40. The output ends of the two second drive motors 40 drive the second sprocket 41 to rotate. The rotation of the second sprocket 41 drives the second chain 42 to move. The movement of the second chain 42 drives the rotating roller 39 to rotate. The rotation of the rotating roller 39 drives the board to move. During the movement of the board, the board pressure sensor 43 monitors in real time until the board is moved to the middle position of the two strapping shells 2. At this time, the booster cylinder 7 is activated. The output end of the booster cylinder 7 moves downward, causing the first fixing block 8 to move downward. The first fixing block 8 moves downward and abuts against the top of the plate, causing the plate to move downward. During the downward movement of the plate, the two binding strips at the bottom of the plate are bent under force, forming a U-shape at the top of the substrate 11. At this time, there is a large gap between the two sides of the binding strips and the two sides of the plate. The side push cylinder 14 is activated. The extension end of the side push cylinder 14 causes the side push plate 15 to gradually approach the plate and bend the binding strips, so that the binding strips are close to the two sides of the plate. Once the binding strips are close to both sides of the board, the bending cylinder 23 is activated. The output end of the bending cylinder 23 extends and drives the connecting plate 25 to rotate inside the mounting shell 17. The rotation of the connecting plate 25 drives the bending plate 20 to move, squeezing the top part of the binding strips towards the center of the board, causing the binding strips to tilt towards the top of the board. At this time, the auxiliary cylinder 9 is activated to press the second fixing block 10 onto the top of the board to reduce the gap between the boards and prevent the board from moving inside the binding strips after binding, which would cause the binding strips to fail, thus completing the binding of the board.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic strapping machine, characterized in that: include, A strapping machine (1) is used to strap boards. The strapping machine (1) includes two strapping shells (2). A booster cylinder (7) is fixedly installed on the top of the strapping shell (2). An auxiliary cylinder (9) is fixedly installed on the top of the strapping shell (2). The binding mechanism (3) is used to bend the binding strip. The binding mechanism (3) includes a base plate (11) fixedly connected to the top of the inner wall of the binding shell (2). Two side push plates (15) are slidably connected to the top of the base plate (11). Two first mounting plates (12) are fixedly connected to the top of the base plate (11). A second mounting plate (13) is fixedly connected to the opposite side of the two first mounting plates (12). A mounting shell (17) is fixedly connected to the top of the second mounting plate (13). A limiting plate (18) is fixedly connected to the top of the mounting shell (17). The binding strip is placed inside the limiting plate (18). A bending plate (20) is rotatably connected to the near end of the two mounting shells (17). The first positioning mechanism (4) is used to automatically adjust the position of the plate. The first positioning mechanism (4) includes a hydraulic telescopic column (34) fixedly connected to the bottom of the inner wall of the binding shell (2). The extension end of the hydraulic telescopic column (34) is fixedly connected to a support plate (35). The top of the support plate (35) is rotatably connected to a rotating roller (39). A vision sensor (44) is fixedly installed on one side of the inner wall of the binding shell (2). The second positioning mechanism (5) is used to automatically adjust the position of the tie strip. The second positioning mechanism (5) includes a tie strip roller (27) rotatably connected to the top of the mounting shell (17). The second positioning mechanism (5) also includes a clearance groove (26) opened on the top of the mounting shell (17). The tie strip roller (27) rotates inside the clearance groove (26). The top of the inner wall of the mounting shell (17) is fixedly connected to a tie strip detection shell (28). The bottom of the inner wall of the tie strip detection shell (28) is fixedly installed with a tie strip pressure sensor (29). The detection end of the tie strip pressure sensor (29) is fixedly connected to a roller frame (30). The tie strip roller (27) is rotatably connected to the top of the roller frame (30).

2. The pneumatic strapping machine according to claim 1, characterized in that: The output ends of the booster cylinder (7) and the auxiliary cylinder (9) extend into the interior of the binding shell (2). The output end of the booster cylinder (7) is fixedly connected to a first fixing block (8), and the output end of the auxiliary cylinder (9) is fixedly connected to a second fixing block (10). The two binding shells (2) are fixedly connected to the same base plate (6) on opposite sides.

3. The pneumatic strapping machine according to claim 1, characterized in that: A side-push cylinder (14) is fixedly installed at the bottom of the second mounting plate (13). The output end of the side-push cylinder (14) is fixedly connected to the side-push plate (15). A stop plate (16) is also fixedly connected at the bottom of the second mounting plate (13). One side of the stop plate (16) abuts against the side-push cylinder (14).

4. The pneumatic strapping machine according to claim 1, characterized in that: The bottom of the inner wall of the mounting shell (17) is fixedly connected to a first rotating frame (21) and a second rotating frame (22). The top of the second rotating frame (22) is rotatably connected to a bending cylinder (23). The extension end of the bending cylinder (23) is fixedly connected to a connecting block (24). The top of the second rotating frame (22) is rotatably connected to a connecting plate (25). The connecting plate (25) is rotatably connected inside the connecting block (24). The bending plate (20) is fixedly connected to the connecting plate (25).

5. The pneumatic strapping machine according to claim 1, characterized in that: The top of the inner wall of the mounting shell (17) is fixedly installed with a first drive motor (31). The output end of the first drive motor (31) and the middle part of the tie rod roller (27) are both fixedly sleeved with a first sprocket (32). The two first sprockets (32) are rotatedly sleeved with the same first chain (33).

6. The pneumatic strapping machine according to claim 1, characterized in that: The first positioning mechanism (4) further includes an execution frame (36) fixedly connected to the top of the support plate (35). Both sides of the execution frame (36) are fixedly installed with plate pressure sensors (43). The detection end of the plate pressure sensor (43) is fixedly connected with a sliding block (37). The sliding block (37) is slidably connected inside the execution frame (36). The two sliding blocks (37) are rotatably connected to the same rotating rod (38). The rotating roller (39) is fixedly sleeved on the outside of the rotating rod (38).

7. The pneumatic strapping machine according to claim 6, characterized in that: A second drive motor (40) is fixedly installed on the top of the support plate (35). The output end of the second drive motor (40) and the outside of the rotating rod (38) are both fixedly sleeved with a second sprocket (41). The outside of the two second sprockets (41) are rotatably sleeved with the same second chain (42).

8. The pneumatic strapping machine according to claim 7, characterized in that: The top of the second mounting plate (13) is fixedly connected to two guide plates (19).

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