A stainless steel pipe inner and outer wall synchronous polishing device

Abstract

The utility model provides a stainless steel pipe inner and outer wall synchronous polishing device, including pipeline inner and outer wall polishing structure, it includes servo motor and installation bin, the inside rotation of installation bin is connected with two rotation gear, two rotation gear interlock, the outer wall of rotation gear is provided with rotation axis, the outer wall of rotation axis is provided with a plurality of polishing wheel. The utility model design is reasonable, through setting two sets of polishing wheel, make a polishing wheel with the outer wall of stainless steel pipe fit, another with the inside fit of stainless steel pipe, then the rotation direction between two polishing wheels is opposite, makes the polishing wheel can simultaneously to the inner wall and the outer wall of one end of stainless steel pipe simultaneously polishing, the number setting of polishing wheel is a plurality of simultaneously, the number of turns from fine to thick, can carry on polishing and polishing to the inner wall of stainless steel pipe in turn, need not manual operation polishing wheel or manual adjustment to the position of polishing wheel.

Description

Technical Field

[0001] This utility model mainly relates to the field of stainless steel pipes, specifically to a device for synchronous polishing of the inner and outer walls of stainless steel pipes. Background Technology

[0002] Stainless steel pipes are widely used in petrochemical, food and pharmaceutical, aerospace, and precision instrument industries due to their excellent corrosion resistance and structural strength. In these applications, it is often necessary to connect individual stainless steel pipes into piping systems through welding. The quality of the welded joints directly determines the safety, sealing performance, and service life of the entire piping system.

[0003] To ensure welding quality, the butt joints of stainless steel pipes must undergo rigorous pretreatment before welding. This is because after the steel pipe is cut and processed, its inner and outer walls often have defects such as burrs, oxide layers, oil stains, and minor scratches. These defects can severely affect the penetration depth and weld metal fluidity during welding, easily leading to welding defects such as incomplete penetration, slag inclusions, and porosity, thus creating safety hazards. Therefore, polishing the inner and outer walls of the pipe ends to obtain a clean, smooth, and oxide-free metal surface is a crucial prerequisite for the success of subsequent welding processes.

[0004] Operators use handheld angle grinders or handheld interior wall grinders to grind the outer and inner walls of the steel pipes separately. This method has significant drawbacks: First, grinding the inner and outer walls is done in separate steps, resulting in extremely low efficiency and high labor intensity; second, it relies entirely on the operator's experience and skill, making it difficult to guarantee the quality and consistency of grinding, and easily leading to uneven polishing, over-grinding, or missed areas.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model: This invention provides a device for synchronous polishing of the inner and outer walls of stainless steel pipes, in order to solve the technical problems existing in the background art.

[0007] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a stainless steel pipe inner and outer wall synchronous polishing device, including a pipe feeding structure, wherein a pipe inner and outer wall polishing structure is provided on one side of the pipe feeding structure. The pipe inner and outer wall grinding structure includes a servo motor and an installation chamber. The installation chamber has two rotating gears rotatably connected inside, and the two rotating gears mesh with each other. The outer wall of the rotating gear is provided with a rotating shaft, and the outer wall of the rotating shaft is provided with multiple grinding wheels. A gasket is provided between two grinding wheels, and a fixing bolt is threaded to one end of the rotating shaft.

[0008] Furthermore, the pipeline feeding structure includes a support, a connecting pipe is provided on one side of the support, a feeding wheel is provided inside the connecting pipe, and a side plate is provided on the other side of the support.

[0009] Furthermore, the number of feeding wheels is set to multiple, and the multiple feeding wheels are arranged in a ring array on the inner wall of the connecting pipe.

[0010] Furthermore, a toothed ring is provided on the inner side of the side plate, a sliding groove is provided on the inner side of the side plate, and a limit ring is provided on the inner wall of the sliding groove.

[0011] Furthermore, the servo motor is located on one side of the outer wall of the side plate, and the output end of the servo motor is provided with a rotating frame, which is connected to the mounting compartment.

[0012] Furthermore, a sliding ring is provided on the outer side of the rotating gear, the sliding ring is slidably connected to the inner wall of the groove, and rollers are rotatably connected to the top and bottom of the sliding ring.

[0013] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This invention uses two sets of grinding wheels, one of which is in contact with the outer wall of the stainless steel tube, and the other with the inside of the tube. The two grinding wheels rotate in opposite directions, allowing them to grind both the inner and outer walls of one end of the stainless steel tube simultaneously. Multiple grinding wheels are used, with grit ranging from fine to coarse, to sequentially grind and polish the inner wall of the stainless steel tube without requiring manual operation or adjustment of their positions. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the pipeline feeding structure of this utility model. Figure 3 This is a schematic diagram of the three-dimensional broken pavement structure of the inner and outer walls of the pipe according to this utility model.

[0015] Figure label: 1. Pipe feeding structure; 101. Support; 102. Connecting pipe; 103. Feeding wheel; 104. Side plate; 105. Toothed ring; 106. Slide groove; 107. Limiting ring; 2. Pipe inner and outer wall grinding structure; 201. Servo motor; 202. Rotating frame; 203. Installation chamber; 204. Rotating gear; 205. Rotating shaft; 206. Grinding wheel; 207. Gasket; 208. Fixing bolt; 209. Sliding ring; 210. Roller. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0020] See attached document Figure 1-3A device for simultaneous polishing of the inner and outer walls of stainless steel pipes includes a pipe feeding structure 1, and a pipe inner and outer wall polishing structure 2 is provided on one side of the pipe feeding structure 1. The pipe inner and outer wall grinding structure 2 includes a servo motor 201 and a mounting chamber 203. Two rotating gears 204 are rotatably connected inside the mounting chamber 203, and the two rotating gears 204 mesh with each other. A rotating shaft 205 is provided on the outer wall of each rotating gear 204, and multiple grinding wheels 206 are provided on the outer wall of the rotating shaft 205. A gasket 207 is provided between two grinding wheels 206. A fixing bolt 208 is threaded to one end of the rotating shaft 205. The servo motor 201 is located on one side of the outer wall of the side plate 104, and a rotating frame 202 is provided at the output end of the servo motor 201. The rotating frame 202 is connected to the mounting chamber 203. 3. Connection: A sliding ring 209 is provided on the outer side of the rotating gear 204. The sliding ring 209 is slidably connected to the inner wall of the slide groove 106. Rollers 210 are rotatably connected to the top and bottom of the sliding ring 209. After the stainless steel pipe is attached to the inner and outer wall grinding structure 2, the two sets of grinding wheels 206 are attached to the inner and outer walls of the stainless steel pipe at the same time. Then, the servo motor 201 is started. The servo motor 201 drives the installation chamber 203 to rotate through the rotating frame 202. The installation chamber 203 drives the sliding ring 209 to slide on the inner wall of the slide groove 106, and the rollers 210 rotate on the inner wall of the limiting ring 107 to maintain the stability of the sliding ring 209 during movement. During the movement of the rotating gear 204, it will drive the rotating gear 204 to mesh with the gear ring 105, causing the rotating gear 204 to rotate and drive another rotating gear 204 to rotate. Then the rotating gear 204 drives the rotating shaft 205 to rotate, and the rotating shaft 205 drives the grinding wheel 206 to rotate. The grinding wheel 206 grinds the inner and outer walls of the stainless steel tube. After a set of grinding wheels 206 has finished grinding, the stainless steel tube moves forward, so that the stainless steel tube is in contact with the grinding wheels 206 in other positions, thereby allowing the inner and outer walls of the stainless steel tube to be ground and polished simultaneously.

[0021] Furthermore, the pipe feeding structure 1 includes a support 101, a connecting pipe 102 on one side of the support 101, a feeding wheel 103 inside the connecting pipe 102, and a side plate 104 on the other side of the support 101. Multiple feeding wheels 103 are arranged in a circular array on the inner wall of the connecting pipe 102. A toothed ring 105 is provided on the inner side of the side plate 104, and a sliding groove 106 is formed on the inner side of the side plate 104. A limiting ring 107 is provided on the inner wall of the sliding groove 106. When grinding and polishing the inner and outer walls of the stainless steel pipe are required, the stainless steel pipe is placed inside the connecting pipe 102, and then the feeding wheel 103 rotates, driving the stainless steel pipe to move towards the pipe inner and outer wall grinding structure 2, so that the inner and outer walls of the stainless steel pipe fit against the inner wall of the pipe inner and outer wall grinding structure 2. This system achieves simultaneous polishing of both the inner and outer walls. The polishing wheels 206 are arranged from coarse to fine grit to gradually improve surface finish. The feed wheel 103 is driven by an independent motor with adjustable speed, synchronized with the polishing process.

[0022] Feeding: The stainless steel pipe to be polished is placed horizontally inside the connecting pipe 102102 of the pipe feeding structure 1, so that the end of the steel pipe contacts the feeding wheel 103.

[0023] Feeding positioning: Start the feeding wheel 103. The feeding wheel 103 rotates and drives the stainless steel pipe to move towards the inner and outer wall grinding structure 2 of the pipe.

[0024] The stainless steel tube gradually advances until its end is in contact with the grinding wheel 206: the inner wall is in contact with the inner grinding wheel 206, and the outer wall is in contact with the outer grinding wheel 206.

[0025] Synchronous polishing start: Start the servo motor 201, and the motor drives the rotating frame 202 to rotate through the output end, thereby driving the installation chamber 203 to rotate as a whole.

[0026] The mounting chamber 203 drives the sliding ring 209 to slide within the groove 106 of the side plate 104, and the roller 210 rolls within the limiting ring 107 to ensure smooth movement.

[0027] Gear transmission and grinding: When the installation chamber 203 rotates, the rotating gear 204 fixed inside it meshes with the fixed gear ring 105 on the side plate 104, forcing the rotating gear 204 to rotate.

[0028] Two rotating gears 204 mesh with each other and rotate in opposite directions, respectively driving the rotating shaft 205 and the grinding wheel 206 to rotate in opposite directions.

[0029] The grinding wheel 206 grinds the inner and outer walls of the stainless steel pipe end in sequence: first, the coarse-grit grinding wheel 206 removes burrs and oxide layers, and then the fine-grit grinding wheel 206 performs fine polishing.

[0030] Continuous feeding and full polishing: The feeding wheel 103 continuously pushes the stainless steel pipe forward slowly, so that different sections of the steel pipe pass through multiple sets of grinding wheels 206 in sequence, achieving full polishing of the entire end.

[0031] During the polishing process, the shim 207 maintains the distance between the polishing wheel 206 and the polishing wheel to prevent interference.

[0032] Completion and material cutting: Once the stainless steel tube end is polished, turn off the servo motor 201 and the feed wheel 103.

[0033] Remove the polished stainless steel pipe from the connecting pipe and check the polishing quality.

[0034] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for simultaneous polishing of the inner and outer walls of stainless steel pipes, characterized in that: include Pipeline feeding structure (1), wherein a pipe inner and outer wall grinding structure (2) is provided on one side of the pipeline feeding structure (1). The pipe inner and outer wall grinding structure (2) includes a servo motor (201) and an installation chamber (203). The installation chamber (203) is internally connected to two rotating gears (204). The two rotating gears (204) mesh with each other. The outer wall of the rotating gears (204) is provided with a rotating shaft (205). The outer wall of the rotating shaft (205) is provided with multiple grinding wheels (206). A gasket (207) is provided between the two grinding wheels (206). One end of the rotating shaft (205) is threaded with a fixing bolt (208).

2. The device for simultaneous polishing of the inner and outer walls of stainless steel pipes according to claim 1, characterized in that: The pipeline feeding structure (1) includes a support (101), a connecting pipe (102) is provided on one side of the support (101), a feeding wheel (103) is provided inside the connecting pipe (102), and a side plate (104) is provided on the other side of the support (101).

3. The device for simultaneous polishing of the inner and outer walls of a stainless steel pipe according to claim 2, characterized in that: The number of the feeding wheels (103) is set to multiple, and the multiple feeding wheels (103) are arranged in a ring on the inner wall of the connecting pipe (102).

4. The device for simultaneous polishing of the inner and outer walls of a stainless steel pipe according to claim 2, characterized in that: A toothed ring (105) is provided on the inner side of the side plate (104), and a sliding groove (106) is provided on the inner side of the side plate (104). A limit ring (107) is provided on the inner wall of the sliding groove (106).

5. The device for simultaneous polishing of the inner and outer walls of a stainless steel pipe according to claim 1, characterized in that: The servo motor (201) is located on one side of the outer wall of the side plate (104), and the output end of the servo motor (201) is provided with a rotating frame (202), which is connected to the mounting chamber (203).

6. The device for simultaneous polishing of the inner and outer walls of a stainless steel pipe according to claim 1, characterized in that: A sliding ring (209) is provided on the outer side of the rotating gear (204). The sliding ring (209) is slidably connected to the inner wall of the groove (106). Rollers (210) are rotatably connected to the top and bottom of the sliding ring (209).

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