Inner circle surface treatment device for pipeline elbow machining

Abstract

The invention relates to the technical field of pipeline machining, in particular to an inner circle surface treatment device for pipeline elbow machining, which comprises a clamping base, a mechanical arm and an elbow, a connecting rod is arranged on the mechanical arm, a plurality of rollers movably connected with the inner side of the elbow are arranged on the outer side of the connecting rod, and an inner diameter adjusting mechanism is arranged on the outer side of the connecting rod. According to the inner circle face processing device for pipeline elbow machining, the arranged rolling wheels are shrunk firstly, after the rolling wheels enter an elbow, limiting of the rolling wheels is loosened, and at the moment, the rolling wheels are shrunk, and the inner diameter of the elbow is adjusted; the inner diameter adjusting mechanism can immediately drive the rolling wheel to extend towards the inner side of the bent pipe until the rolling wheel is tightly attached to the inner wall of the bent pipe, accurate adjustment of the matched grinding inner diameter is completed, it is guaranteed that force is evenly transmitted in the grinding process, the device is effectively matched with various pipeline elbows with different inner diameters, and scene limitation is reduced.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, specifically to an inner circular surface treatment device for pipe elbow processing. Background Technology

[0002] Pipe elbows, as key components in industrial pipeline systems that change the direction of medium flow, are widely used in petroleum, chemical, water conservancy, municipal, food and pharmaceutical fields. Their quality directly affects the flow efficiency, sealing performance and service life of the pipeline system. In the elbow processing, the treatment of the inner circular surface is one of the core links. The smoothness, precision and integrity of the inner circular surface have a decisive impact on the medium flow resistance, corrosion resistance and system safety.

[0003] In existing pipe elbow processing inner surface treatment devices, grinding is the core step, the purpose of which is to ensure that the inner side of the elbow remains smooth during use. The current mainstream grinding methods have obvious limitations: one type is to use a handheld grinder, which can handle conventional scenarios, but when faced with pipe elbows with smaller diameters, the tool size is limited and it is difficult to penetrate deep into the interior, making it impossible to complete precise grinding. Another type of method uses a flexible rod to rotate the grinding disc, which solves the grinding problem in some curved areas. However, due to structural limitations, it is difficult to adapt to various pipe elbows with different inner diameters. When the inner diameter of the elbow changes, the grinding components need to be replaced frequently, which is not only cumbersome to operate, but also affects the processing efficiency and quality stability. The overall adaptability is still insufficient. Therefore, we propose an inner circle surface treatment device for pipe elbow processing. Summary of the Invention

[0004] One of the technical problems to be solved in this application is: how to design an inner round surface treatment device for pipe bend processing that reduces the limitations of grinding the inside of the bend. To address the aforementioned technical problems, this application provides an inner surface treatment device for pipe elbow processing, comprising a clamping base, a robotic arm, and a bent pipe. The robotic arm is equipped with a connecting rod, and multiple rollers movably connected to the inner side of the bent pipe are arranged on the outer side of the connecting rod. An inner diameter adjustment mechanism is provided on the outer side of the connecting rod to drive the multiple rollers to contact the inner diameters of bent pipes of different sizes. Multiple abrasive belts are provided on the outer side of the connecting rod, and an adaptive grinding mechanism connected to the inner diameter adjustment mechanism is provided on the outer side of the connecting rod to drive the multiple abrasive belts to grind the bent pipe through adjustment of the inner diameter adjustment mechanism.

[0005] In some embodiments, the inner diameter adjustment mechanism includes a fixing ring sleeved on the outside of the connecting rod, the fixing ring having a groove on its outer side, and a rotating plate connected to a roller being movably disposed on the inner side of the groove.

[0006] In some embodiments, two wing plates are provided on the outer side of the rotating plate, a through groove is provided on the side of the rotating plate, a straight plate is movably disposed between the two wing plates and movably connected to the inner side of the through groove, and a connecting clip is movably disposed on the outer side of the bottom end of the straight plate.

[0007] In some embodiments, the side of the connecting clamp is provided with a movable ring sleeved on the outside of the connecting rod, and a tension spring is provided between the top end of the movable ring and the bottom end of the fixed ring, and the tension spring is sleeved on the outside of the connecting rod.

[0008] In some embodiments, the outer side of the movable ring is provided with a plurality of bending plates, the bottom of the plurality of bending plates is provided with shape memory metal, and the bottom end of the connecting rod is provided with a universal joint.

[0009] In some embodiments, the bottom of the shape memory metal is provided with a Z-shaped plate, and a pull ring is movably provided on the side of the Z-shaped plate. An annular groove is provided on the outer side of the pull ring and is movably connected to the Z-shaped plate.

[0010] In some embodiments, the adaptive grinding mechanism includes a rotary cylinder movably disposed at the bottom end of a universal joint, a shaft is provided at the end of the rotary cylinder, a sleeve is sleeved on the outer side of the shaft, and a square groove plate is provided on the outer side of the sleeve.

[0011] In some embodiments, an inclined plate is movably provided on the inner side of the square channel plate, a vertical rod connected to a movable ring is provided on the top of the inclined plate, a sliding groove is provided on the inner side of the square channel plate, and a slider movably connected to the sliding groove is provided on the outer side of the inclined plate.

[0012] In some embodiments, a spline groove is provided on the outer side of the square groove plate, a spline shaft is movably arranged on the inner side of the spline groove, an inclined rod is provided at the end of the spline shaft and movably connected to the inclined surface of the inclined plate, a limiting plate is provided at the other end of the spline shaft and connected to the frosting belt, and a strong tension spring is provided between the square groove plate and the limiting plate and sleeved on the outer side of the spline shaft.

[0013] In some embodiments, the end of the shaft is provided with a collection tray that is movably connected to the inside of the bend, and the outside of the collection tray is provided with a cleaning tray.

[0014] This invention has at least the following beneficial effects: 1. The roller is first retracted and then released after it enters the bend. At this time, the inner diameter adjustment mechanism will immediately drive the roller to extend into the bend until it fits tightly against the inner wall of the bend. This completes the precise adjustment of the inner diameter for grinding. The retracted state allows the roller to smoothly enter bends of different diameters without getting stuck. After fitting, the roller can provide reliable support for subsequent grinding through stable contact with the inner wall, ensuring the uniform transmission of force during grinding. This effectively adapts to various pipe bends with different inner diameters and reduces scene limitations. 2. After the internal inspection of the bent pipe is completed by the roller, the adaptive grinding mechanism is driven to work, which drives the grinding belt to open and close. After the adjustment is completed, the grinding belt rotates with the mechanism, which can fully cover the inner circular surface of the bent pipe for grinding. This can adapt to the curved surface structure of the bent pipe, ensure uniform grinding without dead corners, thereby increasing the grinding accuracy and efficiency, and improving the smoothness of the inner surface of the bent pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the roller, abrasive belt, inner diameter adjustment mechanism and adaptive grinding mechanism of the present invention; Figure 3 This is a cross-sectional structural schematic diagram of the connecting rod of the present invention; Figure 4 This is a schematic diagram of the roller and inner diameter adjustment mechanism of the present invention; Figure 5 This is an exploded structural diagram of the roller, rotating plate, wing plate, and fixing ring of the present invention; Figure 6 This is an exploded structural diagram of the roller, rotating plate, straight plate, and fixing ring of the present invention; Figure 7 This is a schematic diagram of the abrasive belt and adaptive polishing mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the sleeve, shaft, square groove plate and abrasive belt of the present invention; Figure 9 This is an exploded structural diagram of the sleeve, inclined plate, and spline shaft of the present invention; Figure 10 This is an exploded structural diagram of the shaft, rotary cylinder, collection plate, and cleaning plate of the present invention.

[0016] In the diagram: 1. Clamping base; 2. Robotic arm; 3. Bending pipe; 4. Connecting rod; 5. Roller; 6. Frosted belt; 7. Inner diameter adjustment mechanism; 71. Fixing ring; 72. Universal joint; 73. Rotating plate; 74. Through groove; 75. Wing plate; 76. Straight plate; 77. Groove; 78. Tension spring one; 79. Moving ring; 710. Connecting clamp; 711. Bending plate; 712. Z-shaped plate; 713. 714. Shape memory metal; 715. Pull ring; 8. Ring groove; 8. Adaptive grinding mechanism; 81. Rotary cylinder; 82. Shaft; 83. Limiting plate; 84. Sleeve disc; 85. Square groove plate; 86. High-strength tension spring; 87. Splined shaft; 88. Vertical rod; 89. Diagonal rod; 810. Spline groove; 811. Slide groove; 812. Inclined plate; 813. Slider; 814. Collection tray; 815. Cleaning tray. Detailed Implementation

[0017] 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.

[0018] Example 1: Please refer to Figure 1-10 This invention provides a technical solution: an inner circular surface treatment device for processing pipe elbows, including a clamping base 1, a robotic arm 2, and a bend 3. A connecting rod 4 is provided on the robotic arm 2. Multiple rollers 5 are provided on the outer side of the connecting rod 4 and are movably connected to the inner side of the bend 3. An inner diameter adjustment mechanism 7 is provided on the outer side of the connecting rod 4 to drive the multiple rollers 5 to contact the inner diameters of bends 3 of different sizes. Multiple abrasive belts 6 are provided on the outer side of the connecting rod 4. An adaptive grinding mechanism 8 connected to the inner diameter adjustment mechanism 7 is provided on the outer side of the connecting rod 4 to drive the multiple abrasive belts 6 to grind the bend 3 through the adjustment of the inner diameter adjustment mechanism 7. The rollers 5 can rotate on the inner wall of the bend 3, and multiple anti-slip grooves 811 are provided on the outer side to prevent the rollers 5 from slipping when rotating, so that they can fit tightly against the inner wall of the bend 3. The abrasive belts 6 can grind the inner wall of the bend 3 when rotating.

[0019] The inner diameter adjustment mechanism 7 includes a fixing ring 71 sleeved on the outside of the connecting rod 4. A groove 77 is provided on the outside of the fixing ring 71. A rotating plate 73 connected to the roller 5 is movably arranged on the inside of the groove 77. The fixing ring 71 is sleeved on the connecting rod 4, so that the rotating rod can rotate around the groove 77 when the roller 5 moves.

[0020] Two wing plates 75 are provided on the outer side of the rotating plate 73. A through groove 74 is provided on the side of the rotating plate 73. A straight plate 76 is movably connected to the inner side of the through groove 74 between the two wing plates 75. A connecting clip 710 is movably provided on the outer side of the bottom end of the straight plate 76. When the rotating plate 73 moves, the connecting clip 710 will move under the action of the straight plate 76.

[0021] The side of the connecting clamp 710 is provided with a movable ring 79 that is sleeved on the outside of the connecting rod 4. A tension spring 78 is provided between the top end of the movable ring 79 and the bottom end of the fixed ring 71. The tension spring 78 is sleeved on the outside of the connecting rod 4. The connecting clamp 710 will drive the movable ring 79 to rise and fall, mainly by utilizing the state of the tension spring 78.

[0022] Multiple bending plates 711 are provided on the outer side of the moving ring 79. The bottom of each bending plate 711 is provided with shape memory metal 713. The bottom end of the connecting rod 4 is provided with a universal joint 72. The shape memory metal 713 can be bent. The shape memory metal 713 can be bent flexibly, and the universal joint 72 can also bend adaptively with the shape of the bend 3. Even if it enters the bending section of the bend 3, it can still work normally. Its core advantage is that it can automatically reset after deformation.

[0023] The bottom of the shape memory metal 713 is provided with a Z-shaped plate 712, and a pull ring 714 is movably provided on the side of the Z-shaped plate 712. The outer side of the pull ring 714 is provided with an annular groove 715 that is movably connected to the Z-shaped plate 712. When the pull ring 714 rotates, due to the setting of the annular groove 715, the pull ring 714 will not drive the Z-shaped plate 712 to rise or fall.

[0024] Example 2: Please refer to Figure 7-10 The present invention provides a technical solution: the adaptive grinding mechanism 8 includes a rotary cylinder 81 movably disposed at the bottom end of the universal joint 72, a shaft 82 is provided at the end of the rotary cylinder 81, a sleeve 84 is sleeved on the outside of the shaft 82, and a square groove plate 85 is provided on the outside of the sleeve 84. The shaft 82 at the output end of the rotary cylinder 81 is rotated, thereby driving the abrasive belt 6 to rotate, thereby grinding the inside of the bent pipe 3. At the same time, the rotary cylinder 81 operates by gas, so it is driven by a hose.

[0025] An inclined plate 812 is movably provided on the inner side of the square channel plate 85. A vertical rod 88 connected to the moving ring 79 is provided on the top of the inclined plate 812. A sliding groove 811 is provided on the inner side of the square channel plate 85. A slider 813 movably connected to the sliding groove 811 is provided on the outer side of the inclined plate 812. The inclined plate 812 can be driven to move by the vertical rod 88. The slider 813 moves in the sliding groove 811, so that the lifting and lowering of the inclined plate has a guiding effect and prevents it from deviating.

[0026] A spline groove 810 is provided on the outer side of the square groove plate 85. A spline shaft 87 is movably arranged on the inner side of the spline groove 810. A diagonal rod 89 is provided at the end of the spline shaft 87 and is movably connected to the inclined surface of the inclined plate 812. A limiting plate 83 connected to the frosting belt 6 is provided at the other end of the spline shaft 87. A strong tension spring 86 is provided between the square groove plate 85 and the limiting plate 83 and sleeved on the outside of the spline shaft 87. The spline groove 810 and the spline shaft 87 are mainly designed to prevent the diagonal rod 89 from rotating when it moves, allowing it to move only horizontally. The strong tension spring 86 also ensures that the diagonal rod 89 fits tightly against the inclined surface of the inclined plate 812.

[0027] The end of the shaft 82 is provided with a collection plate 814 that is movably connected to the inside of the bend 3. A cleaning plate 815 is provided on the outside of the collection plate 814. The collection plate 814 can collect the debris generated during the grinding of the bend 3, and the cleaning plate 815 can clean the inside of the un-grinded bend 3 in advance, reducing the interference of residual impurities in the bend 3 on the grinding process.

[0028] Working principle: When using this device, the clamping base 1 first clamps the bent tube 3 that needs to be ground. At this time, the robotic arm 2 will drive the connecting rod 4 into the inside of the bent tube 3. At this time, the roller 5 is limited by the robotic arm 2 and cannot open. When it reaches the inside of the bent tube 3, the roller 5 is released. At this time, the tension spring 78 will quickly return to its original position. The tension spring 78 will drive the moving ring 79 to rise. The moving ring 79 will drive the connecting clamp 710 to move. The connecting clamp 710 will drive the straight plate 76 to move. The straight plate 76 slides inside the through groove 74, causing the rotating plate 73 to rotate around the inside of the groove 77. Therefore, the roller 5 is in contact with the inside of the bent tube 3. When the moving ring 79 moves, it drives the bending plate 711 and the shape memory metal 713 to move. The shape memory metal 713 drives the Z-shaped plate 712 to move, which in turn drives the pull ring 714 to rise. The pull ring 714 drives the vertical rod 88 at the bottom to move, and the vertical rod 88 drives the inclined plate 812 at the bottom to slide inside the square slot plate 85. At this time, the inclined surface of the inclined plate 812 rises, which squeezes the inclined rod 89, causing the inclined rod 89 to... The moving spline shaft 87 slides inside the spline groove 810. The spline groove 810 drives the limiting plate 83 and the abrasive belt 6 to the set position. At this time, the strong tension spring 86 will squeeze the spline shaft 87. When the rotary cylinder 81 is started, the shaft 82 rotates to drive the sleeve 84 to rotate. The sleeve 84 will drive the abrasive belt 6 to rotate through the square groove plate 85, thereby polishing the inner wall of the bent tube 3. The strong tension spring 86 will prevent the abrasive belt 6 from displacing under the action of inertia.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] 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.

Claims

1. A device for processing the inner circular surface of a pipe elbow, comprising a clamping base (1), a robotic arm (2), and a pipe bend (3), characterized in that: The robotic arm (2) is provided with a connecting rod (4). Multiple rollers (5) are provided on the outside of the connecting rod (4) and are movably connected to the inside of the bend (3). An inner diameter adjustment mechanism (7) is provided on the outside of the connecting rod (4) to drive multiple rollers (5) to contact the inner diameters of bends (3) of different sizes. Multiple abrasive belts (6) are provided on the outside of the connecting rod (4). An adaptive grinding mechanism (8) connected to the inner diameter adjustment mechanism (7) is provided on the outside of the connecting rod (4) to drive multiple abrasive belts (6) to grind the bend (3) through the adjustment of the inner diameter adjustment mechanism (7).

2. The inner circular surface treatment device for pipe elbow processing according to claim 1, characterized in that: The inner diameter adjustment mechanism (7) includes a fixing ring (71) sleeved on the outside of the connecting rod (4), and a groove (77) is provided on the outside of the fixing ring (71). A rotating plate (73) connected to the roller (5) is movably arranged on the inside of the groove (77).

3. The inner circular surface treatment device for pipe elbow processing according to claim 2, characterized in that: Two wing plates (75) are provided on the outer side of the rotating plate (73). A through groove (74) is provided on the side of the rotating plate (73). A straight plate (76) is movably arranged between the two wing plates (75) and movably connected to the inner side of the through groove (74). A connecting clip (710) is movably arranged on the outer side of the bottom end of the straight plate (76).

4. The inner circular surface treatment device for pipe elbow processing according to claim 3, characterized in that: The side of the connecting clamp (710) is provided with a movable ring (79) sleeved on the outside of the connecting rod (4). A tension spring (78) is provided between the top end of the movable ring (79) and the bottom end of the fixed ring (71). The tension spring (78) is sleeved on the outside of the connecting rod (4).

5. The inner circular surface treatment device for pipe elbow processing according to claim 4, characterized in that: The outer side of the moving ring (79) is provided with multiple bending plates (711), and the bottom of each of the multiple bending plates (711) is provided with memory metal (713). The bottom end of the connecting rod (4) is provided with a universal joint (72).

6. The inner circular surface treatment device for pipe elbow processing according to claim 5, characterized in that: The bottom of the shape memory metal (713) is provided with a Z-shaped plate (712), and a pull ring (714) is movably provided on the side of the Z-shaped plate (712). The outer side of the pull ring (714) is provided with an annular groove (715) that is movably connected to the Z-shaped plate (712).

7. The inner circular surface treatment device for pipe elbow processing according to claim 1, characterized in that: The adaptive grinding mechanism (8) includes a rotary cylinder (81) movably disposed at the bottom of the universal joint (72). The end of the rotary cylinder (81) is provided with a shaft (82). A sleeve (84) is sleeved on the outside of the shaft (82). A square groove plate (85) is provided on the outside of the sleeve (84).

8. The inner circular surface treatment device for pipe elbow processing according to claim 7, characterized in that: An inclined plate (812) is movably provided on the inner side of the square channel plate (85). A vertical rod (88) connected to the moving ring (79) is provided on the top of the inclined plate (812). A sliding groove (811) is provided on the inner side of the square channel plate (85). A slider (813) movably connected to the sliding groove (811) is provided on the outer side of the inclined plate (812).

9. The inner circular surface treatment device for pipe elbow processing according to claim 8, characterized in that: A spline groove (810) is provided on the outer side of the square groove plate (85), and a spline shaft (87) is movably arranged on the inner side of the spline groove (810). A diagonal rod (89) is provided at the end of the spline shaft (87) and is movably connected to the inclined surface of the inclined plate (812). A limiting plate (83) connected to the frosting belt (6) is provided at the other end of the spline shaft (87). A strong tension spring (86) is provided between the square groove plate (85) and the limiting plate (83) and sleeved on the outside of the spline shaft (87).

10. The inner circular surface treatment device for pipe elbow processing according to claim 7, characterized in that: The end of the shaft (82) is provided with a collection plate (814) that is movably connected to the inside of the bend (3), and a cleaning plate (815) is provided on the outside of the collection plate (814).

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