Milling tooth welding equipment for milling machine roller

Abstract

The invention relates to the technical field of welding equipment, and particularly discloses milling tooth welding equipment for a milling machine roller, the milling tooth welding equipment comprises a first mounting rod, supporting frames are fixedly mounted at the lower parts of the two ends of the first mounting rod, and symmetrical adjusting rods are rotatably arranged in the middle of the lower end of the first mounting rod; a second mounting rod is arranged on the inner side of the supporting frame, a material frame is arranged on the outer side of the second mounting rod, and a roller part is placed at the upper end of the material frame; a milling tooth clamping-welding integrated mechanism is formed by a semicircular rod at the upper end of a first mounting rod, a U-shaped mounting groove rod and a clamping frame, the clamping frame is vertically through, and clamping rods are arranged on the inner side of the clamping frame in a sliding mode, so that milling teeth can be tightly clamped, and it is ensured that the lower end faces of the milling teeth are completely attached to the circumferential face of a roller piece; and meanwhile, the laser welding device at the lower end of the clamping frame can synchronously move along with the clamping frame, the welding position does not need to be independently adjusted manually, and the problems that traditional equipment is scattered in structure, cumbersome in operation and asynchronous in clamping and welding are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for milling teeth of a milling machine drum. Background Technology

[0002] In the production of milling machine rollers, the welding quality of the milling teeth and the roller components directly determines the operating performance of the equipment. Currently, the welding equipment used in the industry has many defects.

[0003] Firstly, the equipment structure is fragmented, with the roller support, milling tooth clamping and welding components being independent of each other, resulting in low compatibility. This not only occupies a large space but also requires frequent manual adjustment of the positions of each component, making the operation cumbersome and inefficient. Furthermore, traditional roller components have poor positioning stability, and the support structure is mostly of a fixed style, which cannot be flexibly adjusted according to the roller diameter. This can easily lead to roller misalignment and loose milling tooth fit during welding, resulting in welding gaps.

[0004] In addition, the traditional milling tooth clamping and welding actions are not synchronized, requiring manual movement of the welding machine for alignment, which makes it difficult to guarantee welding accuracy and results in a high rework rate. Secondly, there is a lack of suitable auxiliary structures, and loading and unloading rely on external hoisting equipment. Furthermore, there is no roller surface pretreatment function, and impurities and oxide layers can easily affect welding quality. At the same time, the lack of auxiliary support and angle adjustment mechanisms during the welding process further limits the improvement of welding quality. Summary of the Invention

[0005] The purpose of this invention is to provide a milling tooth welding device for milling machine drums, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a milling tooth welding device for a milling machine drum, comprising a first mounting rod, wherein support frames are fixedly mounted on the lower parts of both ends of the first mounting rod, and symmetrical adjustment rods are rotatably arranged on the middle of the lower end of the first mounting rod; The support frame has a second mounting rod on its inner side and a material rack on its outer side. A roller is placed on the upper end of the material rack. The upper end of the first mounting rod is provided with a semi-circular rod, the inner side of the semi-circular rod is provided with a U-shaped mounting groove rod, and the inner side of the U-shaped mounting groove rod is slidably provided with a clamping frame; The upper and lower surfaces of the clamping frame are connected, and clamping rods are slidably provided on both inner end surfaces of the clamping frame. A laser welder is rotatably provided at the lower end of the clamping frame. Milling teeth are clamped on the inner side of the clamping rods, and the lower end surfaces of the milling teeth are completely in contact with the outer circumferential surface of the roller component.

[0007] Preferably, there are two first mounting rods, and a forward and reverse motor is fixedly installed at the middle position of the lower end face of each of the two first mounting rods. A U-shaped frame is provided on the output shafts at both ends of the forward and reverse motors, and the upper end face of the U-shaped frame is fixedly installed on the lower end face of the first mounting rod.

[0008] Preferably, an adjusting rod is rotatably mounted on the inner side of the lower part of the U-shaped frame. The middle part of the adjusting rod is disconnected, and a cavity groove is opened inside the middle part to the upper and lower ends. A sliding rod is slidably mounted inside the middle part to the upper and lower ends of the adjusting rod. A first spring is fixedly installed between the upper and lower ends of the sliding rod and the adjacent side inside the cavity groove. A rotating roller is provided on one side of the lower end of the adjusting rod.

[0009] Preferably, a track conveyor trough rod is fixedly installed on the inner side of the two second mounting rods on the left and right sides. A track is rotatably installed inside the track conveyor trough rod. A material rack is fixedly installed on the outer side of the track. The upper end of the material rack has an arc-shaped structure.

[0010] Preferably, symmetrical mounting plates are fixedly installed on the middle of the inner sides of the two second mounting rods, and buckle plates are rotatably installed on the outer edges of the mounting plates. Servo motors are fixedly installed inside the two mounting plates on the left side, and drive gears are fixedly installed on the output shafts of the servo motors. The drive gears are located between the two mounting plates.

[0011] Preferably, a notch cleaning wheel is rotatably mounted on the inner side of both the front and rear mounting plates. The outer circumferential surface of the notch cleaning wheel is provided with tooth grooves, and the tooth grooves and adjacent drive gears are in a meshing state. Notch grooves are provided on both the left and right sides of the notch cleaning wheel, and the notch grooves and adjacent buckle plates are in a sliding connection state.

[0012] Preferably, symmetrical telescopic cylinders are fixedly installed on the upper end faces of the two first mounting rods, and a semi-circular rod is fixedly installed on the telescopic rods of the two telescopic cylinders. The upper inner sides of the two semi-circular rods are fixedly connected to the U-shaped mounting groove rod. The middle part of the left semi-circular rod is notched, and the left semi-circular rod and the inner U-shaped mounting groove rod are in a through state.

[0013] Preferably, a self-rotating gear is rotatably provided on the inner circumferential surface of the semi-circular rod, and the outer circumferential surface of the self-rotating gear can fit against the outer circumferential surface of the roller component. An auxiliary roller is rotatably installed on the inner circumferential surface of the semi-circular rod, and the circumferential surface of the auxiliary roller fits against the outer circumferential surface of the roller component.

[0014] Preferably, a first groove is provided on both inner sides of the clamping frame, and a plurality of second springs are fixedly installed inside the first groove. The outer side of each second spring is fixedly connected to the inner side of the adjacent clamping rod.

[0015] Preferably, a second groove is formed on the lower end face of the clamping frame, the second groove has a convex structure, a moving gear is provided inside the second groove, a U-frame is fixedly installed on the outer side of the moving gear, the lower end of the U-frame is located outside the second groove and a stepper motor is fixedly installed inside it, and a laser welder is fixedly installed on the inner side of the stepper motor.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention comprises a milling tooth clamping-welding integrated mechanism consisting of a semi-circular rod at the upper end of the first mounting rod, a U-shaped mounting groove rod, and a clamping frame. The clamping frame is vertically continuous and the clamping rod is slidably arranged on the inner side, which can tightly clamp the milling tooth and ensure that its lower end face is completely in contact with the circumferential surface of the roller part. At the same time, the laser welder at the lower end of the clamping frame can move synchronously with the clamping frame, eliminating the need for manual adjustment of the welding position. This effectively solves the problems of traditional equipment having a fragmented structure, cumbersome operation, and asynchronous clamping and welding. It reduces the space occupied by the equipment, significantly improves the welding alignment accuracy, and reduces the rework rate.

[0017] 2. In this invention, the telescopic cylinder at the upper end of the first mounting rod can drive the semi-circular rod to move up and down, thereby adjusting the height of the U-shaped mounting groove rod and the clamping frame to ensure that the milling teeth and the roller parts are properly fitted. At the same time, the self-rotating gear and the auxiliary roller on the inner side of the semi-circular rod fit against the circumference of the roller parts, playing an auxiliary support and guiding role during welding, avoiding roller offset, effectively solving the problems of poor positioning stability and low adaptability of traditional equipment, and meeting the welding requirements of milling teeth and roller parts of different specifications, ensuring the stability of the workpiece position during the welding process.

[0018] 3. In this invention, the crawler conveyor trough rod inside the second mounting rod cooperates with the crawler to drive the arc-shaped material rack to move, realizing automatic feeding, unloading, and welding position adjustment of the roller parts without relying on external hoisting equipment, simplifying the operation process; the mounting plate and buckle plate inside the front and rear second mounting rods cooperate with the notch cleaning wheel, and the servo motor drives the drive gear to rotate the notch cleaning wheel. Its tooth groove can clean impurities and oxide layers on the surface of the roller parts, providing a clean surface for welding. This solves the problem of traditional equipment relying on external assistance and lacking pre-treatment functions. While improving conveying efficiency, it eliminates the impact of impurities on welding quality, laying the foundation for high-quality welding; in addition, the second spring in the first groove inside the clamping frame can elastically adjust the clamping rod force to adapt to milling teeth of different widths. The moving gear and U-shaped frame in the lower second groove cooperate with the forward and reverse motors to drive the laser welder to flexibly adjust the welding angle, further improving the welding quality. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is a structural diagram of the first mounting rod and the second mounting rod of the present invention; Figure 3 This is a schematic diagram of the adjusting rod of the present invention; Figure 4 This is a schematic diagram of the material rack of the present invention; Figure 5 This is a schematic diagram of the notch cleaning wheel of the present invention; Figure 6 This is a schematic diagram of the semi-circular rod of the present invention; Figure 7 This is a schematic diagram of the semi-circular rod of the present invention; Figure 8 This is a schematic diagram of the clamping frame of the present invention; Figure 9 This is a schematic diagram of the lower end face of the clamping frame of the present invention; Figure 10 This is a schematic diagram of the laser welder of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. First mounting rod; 101. Support frame; 102. Forward and reverse motor; 103. U-shaped frame; 104. Adjusting rod; 105. Cavity groove; 106. Slide rod; 107. First spring; 108. Rotating roller; 2. Second mounting rod; 201. Track conveyor trough rod; 202. Track; 203. Material rack; 4. Mounting plate; 401. Snap-on plate; 402. Servo motor; 403. Drive gear; 404. Notch cleaning wheel; 405. Notch groove; 5. Telescopic cylinder; 6. Semi-circular rod; 601. Rotating gear; 602. Auxiliary roller; 603. U-shaped mounting groove rod; 7. Clamping frame; 701. First groove; 702. Second spring; 703. Clamping rod; 704. Second groove; 705. Moving gear; 706. U-frame; 707. Stepper motor; 708. Laser welder; 8. Roller components; 9. Milled teeth. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 4 The present invention provides a technical solution: A milling machine roller milling tooth welding device includes two first mounting rods 1, and support frames 101 are fixedly mounted on the left and right sides of the lower ends of the two first mounting rods 1 using screws. Figure 2 As shown, the support frame 101 is used to keep the first mounting rod 1 away from the ground and to facilitate the subsequent conveying of the roller component 8.

[0024] Then, a forward and reverse motor 102 is fixedly installed at the middle position of the lower end face of both the front and rear first mounting rods 1, and a U-shaped frame 103 is rotatably installed on the circumferential surface of the output shaft at both ends of the forward and reverse motors 102, and the top of the U-shaped frame 103 is fixedly welded to the lower end face of the first mounting rod 1. Figure 3 As shown.

[0025] Adjusting rods 104 are rotatably mounted on the lower inner side of the U-shaped frame 103. The upper ends of the adjusting rods 104 are fixedly connected to the output shafts of the adjacent forward and reverse motors 102, and the middle part of the adjusting rods 104 is disconnected. Figure 3 As shown.

[0026] The adjusting rod 104 has hollow grooves 105 formed inside from the middle to both the upper and lower ends. A sliding rod 106 is slidably installed between the two hollow grooves 105. A first spring 107 is fixedly installed at both the upper and lower ends of the sliding rod 106. The ends of the first springs 107 that are furthest from each other are fixedly installed on the inner surface of the hollow grooves 105. Figure 3 As shown, rotating rollers 108 are rotatably provided on one side of the lower end of the adjusting rod 104. It should be noted that during use, in order to ensure that the subsequent roller component 8 can rotate, the rotating rollers 108 can rotate when energized, and will not rotate when not energized.

[0027] Therefore, with the above structure, during use, when the forward and reverse motor 102 is started, its left and right output shafts drive the adjusting rod 104 inside the U-shaped frame 103 to rotate. During the rotation of the adjusting rod 104, because the middle part of the adjusting rod 104 is broken and it is slidably connected in the cavity groove 105 through the slide rod 106, the adjusting rod 104 has a certain adjustment space when rotating. The first spring 107 plays a role in buffering and resetting during the sliding of the slide rod 106.

[0028] The rotating roller 108 changes position as the adjusting rod 104 rotates. When the roller component 8 needs to be operated, the rotating roller 108 contacts the roller component 8 and provides support and assists in the rotation of the roller component 8. When the rotating roller 108 is energized and rotates, it can drive the roller component 8 to rotate, thereby meeting the requirements for the rotation of the roller component 8 during the welding process of the milling teeth 9 for the milling machine roller, and ensuring the smooth progress of the welding work.

[0029] Therefore, through the above-described operating state, the subsequent roller component 8 can move upward, and then, under the rotation of the rotating roller 108, the roller component 8 can rotate, which facilitates the subsequent installation of the milling teeth 9.

[0030] A track conveyor trough rod 201 is fixedly installed on the inner side of the lower end of the two transverse second mounting rods 201, and a track 202 is rotatably installed inside the track conveyor trough rod 201. A material rack 203 is fixedly installed on the outer side of the two front and rear tracks 202. Figure 4 As shown.

[0031] During use, the material rack 203 can move with the rotation of the track 202. When it is necessary to transport materials, the drive device connected to the track 202 is activated, so that the track 202 rotates in the track conveyor trough 201, thereby driving the material rack 203 fixed on the outside of the track 202 to move. The material rack 203 can be used to place the roller component 8. Therefore, during use, manual handling and loading / unloading adjustment are no longer required.

[0032] In this way, materials can be conveniently and quickly transported to the designated welding position or finished or semi-finished products can be transported out from the welding position, which improves the working efficiency of the entire milling machine roller milling gear 9 welding equipment. Moreover, this conveying method is relatively stable and can ensure that the materials will not shake or fall during the conveying process, thus ensuring the orderly progress of the welding work.

[0033] Symmetrical mounting plates 4 are fixedly installed at the midpoint of the inner sides of the two second mounting rods 2. Clip plates 401 are rotatably mounted on the outer rear ends of the two mounting plates 4. A servo motor 402 is fixedly installed inside the outer mounting plate 4. A drive gear 403 is fixedly installed on the output shaft of the servo motor 402, and the drive gear 403 is located inside the two mounting plates 4. Figure 5 As shown.

[0034] A notch cleaning wheel 404 is rotatably mounted on the inner side of the two drive gears 403. The outer circumferential surface of the notch cleaning wheel 404 has toothed grooves that mesh with the drive gears 403. Notch grooves 405 are provided on both the left and right sides of the notch cleaning wheel 404, and these grooves are in a sliding connection with the adjacent snap-fit ​​plate 401. Figure 5 As shown.

[0035] Therefore, during use, when the servo motor 402 is started, the output shaft of the servo motor 402 drives the drive gear 403 to rotate. Since the drive gear 403 meshes with the tooth groove on the outer circumferential surface of the notch cleaning wheel 404, it drives the notch cleaning wheel 404 to rotate.

[0036] At the same time, because the notch grooves 405 on the left and right sides of the notch cleaning wheel 404 and the adjacent snap plate 401 are in a sliding connection, the notch cleaning wheel 404 can maintain a relatively stable motion trajectory during rotation.

[0037] This design allows the notch cleaning wheel 404 to effectively clean the welding slag and other debris generated during the welding process of the roller part 8 when it enters the welding process and after the welding process is completed. This avoids the accumulation of debris from affecting the welding quality and further ensures the efficient and stable operation of the milling machine roller milling tooth 9 welding equipment.

[0038] Symmetrical telescopic cylinders 5 are fixedly installed on the upper surfaces of both front and rear first mounting rods 1. A semi-circular rod 6 is fixedly installed on the telescopic rods of both cylinders 5. Two symmetrical U-shaped mounting groove rods 603 are fixedly installed on the inner sides of the two semi-circular rods 6. To facilitate subsequent adjustment of the clamping frame 7, the upper end of the left semi-circular rod 6 is open-ended and in a connected and matched state with the U-shaped mounting groove rod 603. Figure 7 As shown.

[0039] Then, a rotating gear 601 is rotatably mounted on the inner circumferential surface of the two semi-circular rods 6, and an auxiliary roller 602 is rotatably mounted on the outer side of the rotating gear 601 and on the inner circumferential surface of the semi-circular rods 6, as shown below. Figure 7 As shown.

[0040] Therefore, during use, its self-rotating gear 601 can rotate under the action of electricity, and in the process of rotation, it can make the mating roller part 8 rotate. Then, under the action of the auxiliary roller 602, the roller part 8 is assisted in rotating, so that personnel can inspect the surface of the roller part 8 that needs to be welded, such as... Figure 6 and Figure 7 As shown.

[0041] Then, a clamping frame 7 is slidably installed on the inner side of the two U-shaped mounting grooves 603. The upper end face of the clamping frame 7 is open to the lower end face. A first groove 701 is provided on both the left and right inner sides of the clamping frame 7. Multiple second springs 702 are fixedly installed inside each of the first grooves 701. A clamping rod 703 is fixedly installed on the outer side of each second spring 702. The outer side of the clamping rod 703 is slidably installed inside the first groove 701. Figure 8 As shown.

[0042] Therefore, during use, the operator can adjust the clamping frame 7 according to the milling teeth 9 that need to be welded, and then place the milling teeth 9 inside the clamping frame 7. Under the action of the second spring 702, the clamping rod 703 can clamp the milling teeth 9, so that the multiple milling teeth 9 in the horizontal direction are always on the same straight line, avoiding the situation where the milling teeth 9 are not straight, and explaining the subsequent adjustment situation.

[0043] A second groove 704 is provided on the lower end face and inside of the clamping frame 7. The second groove 704 has a convex structure, such as... Figure 9 As shown, the device has internal toothed grooves, and a movable gear 705 is rotatably mounted inside the second groove 704. The movable gear 705 has a stator inside and a rotor rotating outside. Therefore, under the control of the controller, the movable gear 705 can rotate, allowing for position adjustment within the second groove 704 in conjunction with the toothed grooves. A U-shaped frame 706 is rotatably mounted on the outer circumference of the movable gear 705, with one end extending to the outside of the second groove 704. A stepper motor 707 is fixedly mounted inside the outer end of the second groove 704, and a laser welder 708 is fixedly mounted on the output shaft of the stepper motor 707. Figure 10 As shown.

[0044] Therefore, during use, the operator can control the movement gear 705 to rotate via the controller, allowing it to precisely adjust its position in conjunction with the teeth of the second groove 704. Once the movement gear 705 reaches the appropriate position, the stepper motor 707 starts, driving the laser welder 708 to rotate and adjust its angle, ensuring that the laser welder 708 can perform welding operations on the milling teeth 9 placed within the clamping frame 7 in the optimal posture. This design allows the welding equipment to flexibly adapt to the welding needs of milling teeth 9 of different specifications, greatly improving welding accuracy and efficiency, and effectively avoiding welding quality problems caused by welding position deviations.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Milling tool welding apparatus for a milling drum of a milling machine, characterized in that: Including first installation rod (1), the lower part of both ends of first installation rod (1) is fixedly installed with support frame (101), the lower middle part of first installation rod (1) is rotatably provided with the adjusting rod (104) of symmetrical state; The inner side of the support frame (101) is provided with a second mounting rod (2), and the outer side of the second mounting rod (2) is provided with a material rack (203), and the upper end of the material rack (203) is placed with a roller (8). The upper end of the first installation rod (1) is provided with a semicircular rod (6), the inner side of the semicircular rod (6) is provided with a U-shaped installation slot rod (603), and the inner side of the U-shaped installation slot rod (603) is slidably provided with a clamping frame (7). The upper end surface to the lower end surface of the clamping frame (7) is in through state, and the inner side of the clamping frame (7) is slidably provided with a clamping rod (703), the lower end of the clamping frame (7) is rotatably provided with a laser welder (708), the inner side of the clamping rod (703) is clamped with a milling tooth (9), and the lower end surface of the milling tooth (9) is completely attached to the outer circumferential surface of the roller (8).

2. A milling tooth welding apparatus for a milling drum of a milling machine according to claim 1, characterized in that: The number of the first installation rod (1) is two, and the lower end surface of the two first installation rod (1) is fixedly installed with a positive and negative motor (102), the two end output shafts of the positive and negative motor (102) are provided with a U-shaped frame (103), and the upper end surface of the U-shaped frame (103) is fixedly installed on the lower end surface of the first installation rod (1).

3. A milling tooth welding apparatus for a milling drum of a milling machine according to claim 2, characterized in that: The lower inner side of the U-shaped frame (103) is rotatably installed with an adjusting rod (104), the middle part of the adjusting rod (104) is disconnected, and the inner part of the middle part to the upper and lower ends is provided with a cavity groove (105), the inner part of the middle part to the upper and lower ends of the adjusting rod (104) is slidably installed with a slide rod (106), the upper and lower ends of the slide rod (106) and the side face adjacent to the inner part of the cavity groove (105) are fixedly installed with a first spring (107), and the lower end of the adjusting rod (104) is provided with a rotating roller (108).

4. A milling teeth welding apparatus for a milling drum of a milling machine according to claim 1, characterized in that: The inner side of the left and right two second installation rod (2) is fixedly installed with a track conveyor groove rod (201), the inner part of the track conveyor groove rod (201) is rotatably provided with a track (202), and the outer side of the track (202) is fixedly installed with a material rack (203).

5. A milling tooth welding apparatus for a milling drum of a milling machine according to claim 4, characterized in that: The inner side of the front and rear two second installation rod (2) is fixedly installed with the installation plate (4) of symmetrical state, the outer side edge of the installation plate (4) is rotatably installed with the buckle plate (401), the inner part of the left two installation plate (4) is fixedly installed with a servo motor (402), the output shaft of the servo motor (402) is fixedly installed with a drive gear (403), and the drive gear (403) is located between the two installation plates (4).

6. A milling tooth welding apparatus for a milling drum of a milling machine according to claim 5, characterized in that: The inner sides of the front and rear installation plates (4) are jointly rotatably installed with a gap cleaning wheel (404), the outer circumferential surface of the gap cleaning wheel (404) is provided with a gear slot, the gear slot and the adjacent driving gear (403) are in meshing state, the left and right side surfaces of the gap cleaning wheel (404) are provided with a gap groove (405), and the gap groove (405) and the adjacent buckle plate (401) are in sliding connection state.

7. A milling teeth welding apparatus for a milling drum of a milling machine according to claim 5, characterized in that: The upper end surfaces of the front and rear first installation rods (1) are fixedly installed with symmetrical telescopic cylinders (5), the telescopic rods of the front and rear telescopic cylinders (5) are jointly fixedly installed with semicircular rods (6), the inner upper portions of the left and right semicircular rods (6) are fixedly connected with the U-shaped installation slot rods (603), the middle portion of the left semicircular rod (6) is in gap state, and the left semicircular rod (6) and the inner U-shaped installation slot rod (603) are in through state.

8. A milling teeth welding apparatus for a milling drum of a milling machine according to claim 1, characterized in that: The inner circumferential surfaces of the semicircular rods (6) are rotatably provided with rotation gears (601), the outer circumferential surface of the rotation gear (601) can be attached to the outer circumferential surface of the roller (8), the inner circumferential surfaces of the semicircular rods (6) are rotatably installed with auxiliary rollers (602), and the circumferential surface of the auxiliary roller (602) is attached to the outer circumferential surface of the roller (8).

9. A milling teeth welding apparatus for a milling drum of a milling machine according to claim 1, characterized in that: The inner side surfaces of the clamping frame (7) are provided with first grooves (701), the inner sides of the first grooves (701) are fixedly installed with a plurality of second springs (702), and the outer side surfaces of the second springs (702) are fixedly connected with the inner side surfaces of adjacent clamping rods (703).

10. A milling teeth welding apparatus for a milling drum of a milling machine according to claim 1, characterized in that: The lower end surface to the inner side of the clamping frame (7) is provided with a second groove (704), the structure of the second groove (704) is convex structure, the inner side of the second groove (704) is provided with a moving gear (705), the outer side of the moving gear (705) is fixedly installed with a U-shaped frame (706), the lower end of the U-shaped frame (706) is located on the outer side of the second groove (704) and is fixedly installed with a stepping motor (707) in the inner side, and the inner side of the stepping motor (707) is fixedly installed with a laser welder (708).

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