Intelligent polishing machine for inner wall of large-volume gas cylinder

Abstract

The utility model discloses a big volume gas cylinder inner wall intelligence polishing machine belongs to gas cylinder processing technical field, specifically includes the frame, and one end of frame is provided with gas cylinder rotating device for making the gas cylinder after fixing rotate, the other end of frame is provided with gas cylinder polishing device for polishing the inner wall of the gas cylinder of rotation, the gas cylinder polishing device includes the feed frame and feed shaft, and the feed frame is slidably connected on the frame, the top of feed frame is provided with the feed seat, the feed seat is fixedly connected with the feed shaft, one end of feed shaft is connected with polishing assembly through the reducing assembly, the utility model changes the traditional polishing mode, not only can make the gas cylinder polishing device effective contact the inner wall of gas cylinder, has improved the polishing effect and polishing efficiency to the inner wall of gas cylinder, and still adapts to different specifications's large diameter gas cylinder, has improved the adaptability of the device.

Description

Technical Field

[0001] This utility model belongs to the field of gas cylinder processing technology, specifically relating to an intelligent polishing machine for the inner wall of large-capacity gas cylinders. Background Technology

[0002] With the development of domestic technology and changes in the market, the demand for large-capacity gas cylinders in various industries such as electronics, medical, automotive, and aviation is increasing, which has driven the development of polishing technology for the inner wall of large-capacity gas cylinders. Improving the processing efficiency of polishing technology for the inner wall of large-capacity gas cylinders is therefore particularly important.

[0003] Existing polishing devices for the inner walls of gas cylinders are generally designed for small gas cylinders. They achieve polishing by fixing the gas cylinder and rotating the polishing device at a certain speed. However, this method cannot accommodate large-capacity gas cylinders. Furthermore, the method of rotating the polishing device and fixing the gas cylinder results in the polishing device not being able to effectively contact the inner wall of the gas cylinder, leading to poor polishing effect and low polishing efficiency. Therefore, there is a need to provide an intelligent polishing machine for the inner walls of large-capacity gas cylinders to solve the above-mentioned technical problems. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides an intelligent polishing machine for the inner wall of large-capacity gas cylinders. This machine revolutionizes traditional polishing methods, enabling the polishing device to effectively contact the inner wall of the gas cylinder, thus improving the polishing effect and efficiency. Furthermore, it is adaptable to large-diameter gas cylinders of various specifications, enhancing the device's versatility.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-capacity gas cylinder inner wall intelligent polishing machine, including a frame, one end of which is provided with a gas cylinder rotating device for rotating the fixed gas cylinder; the other end of which is provided with a gas cylinder polishing device for polishing the inner wall of the rotating gas cylinder. The gas cylinder polishing device includes a feed frame and a feed shaft. The feed frame is slidably connected to the frame. A feed seat is provided above the feed frame. A feed shaft is fixedly connected to the feed seat. One end of the feed shaft is connected to a polishing component through a diameter reducing assembly.

[0006] Preferably, the gas cylinder rotating device includes a three-jaw chuck, which is rotatably connected to the frame and used to lock and fix one of the gas cylinder nozzles. Each jaw of the three-jaw chuck has a clamping block that fits against the outer wall of the gas cylinder nozzle.

[0007] Preferably, a drive box is fixedly connected to the frame, a drive shaft is provided on the drive box, one end of the drive shaft is fixedly connected to the chuck, and the other end of the drive shaft is connected to the drive motor on the frame.

[0008] Preferably, a guide frame is slidably connected to the frame for guiding and limiting another gas cylinder nozzle, and multiple guide wheels that fit against the outer wall of the gas cylinder nozzle are rotatably connected to the guide frame.

[0009] Preferably, the guide frame is provided with a fine-tuning component corresponding to the guide wheel for adjusting the distance between the guide wheel and the gas cylinder nozzle. The fine-tuning component includes an adjusting block, which is fixedly connected to the outside of the guide frame. An adjusting rod is slidably connected inside the adjusting block. One end of the adjusting rod passes through the inside of the guide frame and is rotatably connected to the guide wheel. The other end of the adjusting rod is rotatably connected to a threaded rod, which is threadedly connected to the adjusting block. The other end of the threaded rod passes through the outside of the adjusting block and is fixedly connected to an adjusting knob.

[0010] Preferably, the frame is provided with a guide adjustment assembly for adjusting the distance between the guide frame and the three-jaw chuck. The guide adjustment assembly includes a base, a support base, and an adjustment plate. A guide rib is fixedly connected to the upper part of the support base. The support base is slidably connected to the upper part of the base and is provided with a guide groove adapted to the guide rib. The adjustment plate is slidably connected inside the base. An adjustment bolt penetrating the adjustment plate and the support base is provided at the lower end of the adjustment plate. An adjustment nut is threadedly connected to the other end of the adjustment bolt.

[0011] Preferably, the frame is provided with a guide adjustment assembly for adjusting the distance between the guide frame and the three-jaw chuck. The guide adjustment assembly includes a base, a support base, and an adjustment plate. A guide rib is fixedly connected to the upper part of the base. The support base is slidably connected to the upper part of the base and is provided with a guide groove adapted to the guide rib. The adjustment plate is slidably connected inside the base. An adjustment bolt penetrating the adjustment plate and the support base is provided at the lower end of the adjustment plate. An adjustment nut is threadedly connected to the other end of the adjustment bolt.

[0012] Preferably, the variable diameter assembly includes a push-pull rod and a variable diameter plate. The push-pull rod is slidably connected inside the feed shaft. One end of the push-pull rod extends through to the outside of the feed shaft and is hinged to a first hinge rod. The other end of the first hinge rod is hinged to the variable diameter plate. The variable diameter plate is also symmetrically hinged to second hinge rods on both sides of the first hinge rod. The other ends of the second hinge rods on both sides are hinged to the feed shaft.

[0013] Preferably, the feed frame is provided with a second drive assembly for driving the push-pull rod to reciprocate within the feed shaft. The second drive assembly includes a base plate, which is fixedly connected between the feed frame and the feed seat. A second lead screw is rotatably connected to one side of the base plate located on the feed seat. One end of the second lead screw is driven by a second motor on the base plate. A movable seat is threaded onto the second lead screw, and the movable seat is fixedly connected to the other end of the push-pull rod. A second guide rail, which is fixedly connected to the base plate, is provided below the second lead screw. A second slider is slidably connected to the second guide rail, and the second slider is fixedly connected to the movable seat.

[0014] Preferably, the polishing assembly includes a polishing seat, which is fixedly connected to a variable diameter plate. A polishing motor is fixedly connected to the polishing seat, and a polishing wheel is fixedly connected to the output shaft of the polishing motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model changes the traditional polishing method by using a gas cylinder rotation device and a gas cylinder polishing device. It not only enables the gas cylinder polishing device to effectively contact the inner wall of the gas cylinder, improving the polishing effect and efficiency of the inner wall of the gas cylinder, but also adapts to large-diameter gas cylinders of different specifications, thus improving the adaptability of the device.

[0016] 2. The three-jaw chuck, guide frame and guide wheel improve the stability of the gas cylinder on the frame during rotation, and also facilitate the polishing components to extend into or out of the gas cylinder and polish the inner wall of the gas cylinder.

[0017] 3. The present invention, through the setting of the variable diameter component, can make the polishing component unfold or retract, which makes it easy for the polishing component to extend into or out of the gas cylinder from the gas cylinder nozzle, and is beneficial for the polishing component to polish the inner wall of gas cylinders of different diameters. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a schematic diagram of the unfolded structure of the variable diameter component of this utility model; Figure 4 This is a schematic diagram of the storage structure of the variable diameter component of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle; In the diagram: 1. Frame; 2. Feed frame; 3. Feed shaft; 4. Feed seat; 5. Variable diameter assembly; 51. Push-pull rod; 52. First hinge rod; 53. Variable diameter plate; 54. Second hinge rod; 6. Polishing assembly; 61. Polishing seat; 62. Polishing motor; 63. Polishing wheel; 7. Three-jaw chuck; 8. Guide frame; 9. Guide wheel; 10. Fine-tuning assembly; 101. Adjusting block; 102. Adjusting rod; 103. Threaded rod; 104. Adjusting knob; 11. Guide adjustment... Sectional components; 111, base; 112, support seat; 113, adjusting plate; 114, adjusting bolt; 115, adjusting nut; 116, guide ridge; 12, first drive assembly; 121, first lead screw; 122, drive block; 123, first guide rail; 124, first slider; 13, second drive assembly; 131, base plate; 132, second lead screw; 133, moving seat; 134, second guide rail; 135, second slider; 14, drive shaft; 15 Pressure sensor. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example Please see Figure 1-5 This embodiment provides the following technical solution: a large-capacity gas cylinder inner wall intelligent polishing machine, including a frame 1. A gas cylinder rotating device is provided at the left end of the frame 1 to rotate the fixed gas cylinder. The gas cylinder rotating device includes a three-jaw chuck 7, which is rotatably connected to the frame 1 and used to lock and fix the gas cylinder nozzle at the left end of the gas cylinder. Each jaw of the three-jaw chuck 7 is fixedly connected with a clamping block that fits against the outer wall of the gas cylinder nozzle. Through the three-jaw chuck 7, the three jaws can drive the clamping block to move closer to or away from the gas cylinder nozzle at the same time, thereby clamping and fixing the gas cylinder nozzle at the left end of the gas cylinder.

[0021] A drive box is fixedly connected to the frame 1, and a drive shaft 14 is installed on the drive box. The right end of the drive shaft 14 is fixedly connected to the left end of the chuck, and the left end of the drive shaft 14 is connected to the drive motor on the frame 1. In some implementations, the drive motor is a variable frequency motor, which can adjust the rotation speed of the gas cylinder according to the work requirements to achieve a better polishing effect. Moreover, the output shaft of the drive motor and the left end of the drive shaft 14 are both fixedly connected to pulleys, and the two pulleys are connected by belt drive. With the drive motor installed, while the three-jaw chuck 7 fixes the gas cylinder, the drive motor can rotate the three-jaw chuck 7 to drive the gas cylinder to rotate, which changes the problem that the traditional gas cylinder is only fixed and cannot rotate, thus making it easier for the gas cylinder polishing assembly 6 to polish the inner wall of the gas cylinder.

[0022] A guide frame 8 is slidably connected to the frame 1 to guide and limit the gas cylinder nozzle at the right end of the gas cylinder. Multiple guide wheels 9 are rotatably connected to the guide frame 8 and fit against the outer wall of the gas cylinder nozzle. In some implementations, three guide wheels 9 are provided. The three guide wheels 9 are evenly distributed circumferentially on the guide frame 8 and are arranged along the rotation direction of the gas cylinder. The guide frame 8 has a gate-shaped structure, which allows the gas cylinder nozzle at the right end of the gas cylinder to pass through. Through the guide wheels 9, the gas cylinder nozzle at the right end of the gas cylinder can be guided and limited during the rotation of the gas cylinder by the three-jaw chuck 7, so that the gas cylinder can rotate smoothly on the frame 1.

[0023] The guide frame 8 is equipped with a fine-tuning component 10 corresponding to the guide wheel 9, used to adjust the distance between the guide wheel 9 and the gas cylinder nozzle. The fine-tuning component 10 includes an adjusting block 101, which is fixedly connected to the outside of the guide frame 8. An adjusting rod 102 is slidably connected inside the adjusting block 101. One end of the adjusting rod 102 passes through the inside of the guide frame 8 and is rotatably connected to the guide wheel 9. The other end of the adjusting rod 102 is rotatably connected to a threaded rod 103, which is threadedly connected to the adjusting block 101. The other end of the threaded rod 103 passes through the adjusting block 101. An adjusting knob 104 is fixedly connected to the outside of the segment 101. In some embodiments, a groove is provided on the side of the adjusting rod 102 that is directly opposite to the guide wheel 9, and the guide wheel 9 is installed in the groove and rotatably connected to the adjusting rod 102 through a pin. By using the adjusting knob 104, adjusting rod 102 and threaded rod 103, the distance between the three guide wheels 9 and the gas cylinder nozzle is adjusted in sequence according to the diameter of the gas cylinder nozzle, so that the left and right gas cylinder nozzles on the gas cylinder are on the same baseline, and the device can be used for polishing gas cylinders of different diameters.

[0024] A guide adjustment assembly 11 is provided on the frame 1 for adjusting the distance between the guide frame 8 and the three-jaw chuck 7. The guide adjustment assembly 11 includes a base 111, a support 112, and an adjustment plate 113. A guide rib 116 is fixedly connected to the upper part of the base 111. The support rib 112 is slidably connected to the upper part of the base 111 and is provided with a guide groove adapted to the guide rib 116. The adjustment plate 113 is slidably connected inside the base 111. The lower end of the adjustment plate 113 is provided with a through-hole that passes through the adjustment plate 113 and the support rib 112. Adjusting bolt 114, with an adjusting nut 115 threaded to the other end. In some implementations, base 111 has a concave structure, and guide ribs 116 are fixedly connected to both ends of base 111. Through the adjustment bolt 114 and adjusting nut 115, support base 112 and adjusting plate 113 can cooperate to form a clamping structure of guide frame 8, thereby adjusting the position of guide frame 8 according to the length of gas cylinder, and always ensuring that the gas cylinder nozzle at the right end of the gas cylinder is guided and limited.

[0025] A gas cylinder polishing device is provided at the right end of the frame 1 for polishing the inner wall of the rotating gas cylinder. The gas cylinder polishing device includes a feed frame 2 and a feed shaft 3. The feed frame 2 is slidably connected to the frame 1. A feed seat 4 is provided above the feed frame 2. The feed shaft 3 is fixedly connected to the feed seat 4. One end of the feed shaft 3 is connected to a polishing component 6 through a reducing assembly 5. Through the feed frame 2 and the feed shaft 3, the polishing component 6 can be extended into the gas cylinder to polish the inner wall of the gas cylinder.

[0026] A first drive assembly 12 is provided on the frame 1 to drive the feed frame 2 to reciprocate horizontally. The first drive assembly 12 includes a first lead screw 121, which is rotatably connected to the frame 1. One end of the first lead screw 121 is connected to a first motor on the frame 1. A drive block 122 is threaded onto the first lead screw 121. The upper end of the drive block 122 is fixedly connected to the feed seat 4. First guide rails 123, which are fixedly connected to the frame 1, are provided on both the front and rear sides of the first lead screw 121. A first slider 124 is slidably connected to the first guide rail 123. The first slider 124 is fixedly connected to the feed seat 4. Under the limiting effect of the front and rear first guide rails 123 and the first slider 124 on the feed seat 4, the first motor drives the first lead screw 121 to rotate, causing the drive block 122 to move the feed seat 4 closer to or away from the gas cylinder, thereby allowing the feed shaft 3 to extend into or out of the gas cylinder.

[0027] The variable diameter assembly 5 includes a push-pull rod 51 and a variable diameter plate 53. The push-pull rod 51 is slidably connected inside the feed shaft 3. The left end of the push-pull rod 51 extends through to the outside of the feed shaft 3 and is hinged to a first hinge rod 52. The right end of the first hinge rod 52 is hinged to the variable diameter plate 53. The variable diameter plate 53 is symmetrically hinged to second hinge rods 54 on both the front and rear sides of the first hinge rod 52. The other ends of the second hinge rods 54 on both the front and rear sides are hinged to the feed shaft 3. In some embodiments, the push-pull rod 51 is eccentrically positioned on the feed shaft 3. Inside, the variable diameter plate 53 has a semi-arc structure, and the outer diameter of the variable diameter plate 53 is the same as the outer diameter of the feed shaft 3. The push-pull rod 51, the first hinge rod 52 and the second hinge rod 54 work together to form a triangular linkage structure. Under the driving action of the push-pull rod 51, the variable diameter plate 53 can be moved closer to or away from the feed shaft 3, so that the polishing component 6 is in an unfolded state or a retracted state, thereby polishing the inner wall of the gas cylinder, and also making it easy for the polishing component 6 to extend into or out of the gas cylinder from the gas cylinder nozzle.

[0028] A second drive assembly 13 is provided on the feed frame 2 to drive the push-pull rod 51 to reciprocate within the feed shaft 3. The second drive assembly 13 includes a base plate 131, which is fixedly connected between the feed frame 2 and the feed seat 4. A second lead screw 132 is rotatably connected to the right side of the feed seat 4 on the base plate 131. The right end of the second lead screw 132 is connected to a second motor on the base plate 131. A movable seat 133 is threaded onto the second lead screw 132, and the movable seat 133 is fixedly connected to the right end of the push-pull rod 51. The lower end of the second lead screw 132... The base plate 131 is provided with a second guide rail 134 fixedly connected to the base plate 131. A second slider 135 is slidably connected to the second guide rail 134. The second slider 135 is fixedly connected to the movable seat 133. Under the limiting action of the second guide rail 134 and the second slider 135, the second motor works to make the second lead screw 132 rotate, and the movable seat 133 can slide along the second guide rail 134, so that the push-pull rod 51 can extend or retract on the feed shaft 3, which is convenient for adjusting the eccentric distance between the variable diameter plate 53 and the feed shaft 3.

[0029] The polishing assembly 6 includes a polishing seat 61, which is fixedly connected to the variable diameter plate 53 via a pressure sensor 15. A polishing motor 62 is fixedly connected to the polishing seat 61, and a polishing wheel 63 is fixedly connected to the output shaft of the polishing motor 62. In some embodiments, the polishing seat 61 has a semi-arc structure, and the outer diameter of the polishing seat 61 is the same as the outer diameter of the feed shaft 3, which facilitates the polishing seat 61 and the polishing motor 62 to extend into or out of the gas cylinder, and can also polish the inner wall of the gas cylinder.

[0030] In some embodiments, the pressure sensor 15 is a cantilever beam pressure sensor, wherein the polishing seat 61 is fixedly connected to the bearing surface of the pressure sensor, and the mounting surface of the pressure sensor 15 is fixedly connected to the variable diameter plate 53. By setting the pressure sensor 15, the pressure of the polishing wheel 63 in contact with the inner wall of the gas cylinder can be identified, and the pressure between the polishing wheel 63 and the inner wall of the gas cylinder can be controlled as needed to achieve a uniform polishing effect.

[0031] In some embodiments, the system further includes a PLC controller, the output of which is electrically connected to the input of the drive motor, the input of the first motor, and the input of the second motor, and the input of the PLC controller is electrically connected to the output of the pressure sensor. The working principle of this utility model is as follows: When in use, the gas cylinder nozzle at the left end of the gas cylinder is placed between the three jaws of the three-jaw chuck 7. Then, the three jaws of the three-jaw chuck 7 are adjusted so that the clamping blocks on the three jaws move towards the gas cylinder nozzle at the same time to clamp and fix the gas cylinder nozzle at the left end of the gas cylinder. At the same time, the gas cylinder nozzle at the right end of the gas cylinder extends into the guide frame 8. The adjusting knob 104 on the adjusting block 101 is rotated in sequence to make the threaded rod 103 rotate and drive the adjusting rod 102 and the guide wheel 9 to move towards the gas cylinder nozzle until the outer edges of the three guide wheels 9 are all in contact with the outer wall of the gas cylinder nozzle. Then drive the first motor to make the first lead screw 121 rotate and drive the drive block 122 and the feed seat 4 to move to the left along the first guide rail 123 until the polishing component 6 and the diameter changing component 5 are both inserted into the leftmost end of the gas cylinder. At this time, the initial position of the push-pull rod 51 is the maximum distance between the left end of the push-pull rod 51 and the left end of the feed shaft 3. Then, the second motor is driven to make the push-pull rod 51 move to the right along the feed shaft 3. At this time, under the combined action of the first hinge rod 52 and the second hinge rod 54, the variable diameter plate 53 drives the polishing assembly 6 to move towards the inner wall of the gas cylinder, so that the polishing assembly 6 is in the unfolded state and gradually deviates from the axis of the feed shaft 3, so that the polishing wheel 63 gradually fits against the inner wall of the gas cylinder until the polishing wheel 63 fits against the inner wall of the gas cylinder. Start the polishing motor 62 to make the polishing wheel 63 rotate and polish the inner wall of the gas cylinder. At the same time, start the drive motor to make the three-jaw chuck 7 drive the gas cylinder to rotate. Under the combined action of the rotation of the gas cylinder and the rotation of the polishing wheel 63, the inner wall of the gas cylinder is polished. Meanwhile, the pressure sensor 15 detects the pressure between the polishing wheel 63 and the inner wall of the gas cylinder in real time. The PLC controller controls the second motor to work according to the pressure, so that the push-pull rod 51 moves to the left or right, adjusting the pressure between the polishing wheel 63 and the inner wall of the gas cylinder to achieve a better polishing effect. At the same time, the first drive motor drives the first lead screw 121 to reverse, causing the feed seat 4 to drive the feed shaft 3 to move gradually to the right, so that the polishing wheel 63 continues to move along the axial direction of the gas cylinder during the polishing of the inner wall of the gas cylinder until the entire inner wall of the gas cylinder is polished. After polishing is completed, the second motor is started, causing the second lead screw 132 to reverse and the push-pull rod 51 to move to the left to its maximum position. Under the action of the first hinge rod 52 and the second hinge rod 54, the variable diameter plate 53 drives the polishing assembly 6 to move toward the feed shaft 3 until the variable diameter plate 53 is coaxial with the feed shaft 3. At this time, the polishing assembly 6 is in the storage state, so that the polishing device removes the gas cylinder as the feed shaft 3 gradually extends out of the gas cylinder.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A large-capacity gas cylinder inner wall intelligent polishing machine, characterized in that: Includes a frame (1), one end of which is provided with a gas cylinder rotating device for rotating the fixed gas cylinder; the other end of which is provided with a gas cylinder polishing device for polishing the inner wall of the rotating gas cylinder. The gas cylinder polishing device includes a feed frame (2) and a feed shaft (3). The feed frame (2) is slidably connected to the frame (1). A feed seat (4) is provided above the feed frame (2). The feed shaft (3) is fixedly connected to the feed seat (4). One end of the feed shaft (3) is connected to a polishing component (6) through a diameter reducing assembly (5).

2. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 1, characterized in that: The gas cylinder rotating device includes a three-jaw chuck (7), which is rotatably connected to the frame (1) for locking and fixing one of the gas cylinder nozzles. Each of the jaws of the three-jaw chuck (7) has a clamping block that fits against the outer wall of the gas cylinder nozzle.

3. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 2, characterized in that: A drive box is fixedly connected to the frame (1), and a drive shaft (14) is provided on the drive box. One end of the drive shaft (14) is fixedly connected to the chuck, and the other end of the drive shaft (14) is connected to the drive motor on the frame (1).

4. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 2, characterized in that: A guide frame (8) is slidably connected to the frame (1) for guiding and limiting another gas cylinder nozzle. Multiple guide wheels (9) that fit against the outer wall of the gas cylinder nozzle are rotatably connected to the guide frame (8).

5. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 4, characterized in that: The guide frame (8) is provided with a fine-tuning component (10) corresponding to the guide wheel (9) for adjusting the distance between the guide wheel (9) and the gas cylinder nozzle. The fine-tuning component (10) includes an adjusting block (101), which is fixedly connected to the outside of the guide frame (8). An adjusting rod (102) is slidably connected inside the adjusting block (101). One end of the adjusting rod (102) passes through the inside of the guide frame (8) and is rotatably connected to the guide wheel (9). The other end of the adjusting rod (102) is rotatably connected to a threaded rod (103). The threaded rod (103) is threadedly connected to the adjusting block (101). The other end of the threaded rod (103) passes through the outside of the adjusting block (101) and is fixedly connected to an adjusting knob (104).

6. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 5, characterized in that: The frame (1) is provided with a guide adjustment assembly (11) for adjusting the distance between the guide frame (8) and the three-jaw chuck (7). The guide adjustment assembly (11) includes a base (111), a support seat (112) and an adjustment plate (113). A guide rib (116) is fixedly connected to the top of the base (111). The support seat (112) is slidably connected to the top of the base (111) and is provided with a guide groove adapted to the guide rib (116). The adjustment plate (113) is slidably connected inside the base (111). An adjustment bolt (114) is provided at the lower end of the adjustment plate (113) that penetrates the adjustment plate (113) and the support seat (112). An adjustment nut (115) is threaded to the other end of the adjustment bolt (114).

7. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 1, characterized in that: The frame (1) is provided with a first drive assembly (12) for driving the feed frame (2) to reciprocate in the horizontal direction. The first drive assembly (12) includes a first lead screw (121), which is rotatably connected to the frame (1). One end of the first lead screw (121) is connected to a first motor on the frame (1). A drive block (122) is threaded on the first lead screw (121). One end of the drive block (122) is fixedly connected to the feed seat (4). Both sides of the first lead screw (121) are provided with a first guide rail (123) fixedly connected to the frame (1). A first slider (124) is slidably connected to the first guide rail (123). The first slider (124) is fixedly connected to the feed seat (4).

8. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 7, characterized in that: The variable diameter assembly (5) includes a push-pull rod (51) and a variable diameter plate (53). The push-pull rod (51) is slidably connected inside the feed shaft (3). One end of the push-pull rod (51) extends through to the outside of the feed shaft (3) and is hinged to a first hinge rod (52). The other end of the first hinge rod (52) is hinged to the variable diameter plate (53). The variable diameter plate (53) is located on both sides of the first hinge rod (52) and is also symmetrically hinged to a second hinge rod (54). The other ends of the second hinge rods (54) on both sides are hinged to the feed shaft (3).

9. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 7, characterized in that: The feed frame (2) is provided with a second drive assembly (13) for driving the push-pull rod (51) to reciprocate within the feed shaft (3). The second drive assembly (13) includes a base plate (131) which is fixedly connected between the feed frame (2) and the feed seat (4). A second lead screw (132) is rotatably connected to one side of the feed seat (4) on the base plate (131). One end of the second lead screw (132) is connected to a second motor on the base plate (131). A movable seat (133) is threaded on the second lead screw (132). The movable seat (133) is fixedly connected to the other end of the push-pull rod (51). A second guide rail (134) is fixedly connected to the base plate (131) below the second lead screw (132). A second slider (135) is slidably connected to the second guide rail (134). The second slider (135) is fixedly connected to the movable seat (133).

10. The intelligent polishing machine for the inner wall of a large-capacity gas cylinder according to claim 7, characterized in that: The polishing assembly (6) includes a polishing seat (61), which is fixedly connected to the variable diameter plate (53) via a pressure sensor (15). A polishing motor (62) is fixedly connected to the polishing seat (61), and a polishing wheel (63) is fixedly connected to the output shaft of the polishing motor (62).

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