An automatic grinding device for inner fillet weld of flange

Abstract

An automatic grinding device for the internal fillet weld of a flange has a rotating frame, including a fixing button in the center, and three brackets extending outward with the fixing button as the center of the circle. The brackets are provided with adjustment holes, and the clamps are matched with spring latches through the adjustment holes and fixed on the brackets. The clamps clamp a walking mechanism, and the walking mechanism is connected to the grinding mechanism through an automatic flexible feeding mechanism. A walking wheel is fixed at the bottom of the rotating shaft of the walking mechanism, and a rear end supporting wheel is arranged below the walking wheel; the grinding mechanism also has a longitudinal pneumatic transmission feeding mechanism, and a grinding wheel is connected to the bottom of the transmission shaft of the longitudinal pneumatic transmission feeding mechanism, and a front end supporting wheel is also fixed to the grinding mechanism. The present invention is safe and reliable, and the grinding wheel flexibly presses the weld to be ground through the feeding mechanism. The overall weight of the device is light (total weight is about 8KG), and it is easy to disassemble and assemble. It can be fully automatically ground and can be used across specifications, thereby reducing labor costs, improving work efficiency, and ensuring work safety.

Description

Technical Field

[0001] The invention relates to the field of flange manufacturing, and in particular to a device capable of automatically grinding an inner angle welding part of a flange. Background Art

[0002] The ship piping system is composed of a large number of pipes, most of which need to be welded with flanges. During the pipe processing, the welds between the flanges and the pipes need to be polished after welding. At present, the manual grinding operation on site using a handheld grinder not only generates high noise and high dust, but also has low grinding efficiency, making it difficult to ensure quality and safety. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an automatic grinding device for the inner fillet weld of a flange, which aims to achieve the purpose of automatically grinding the inner fillet weld of a flange by imitating manual grinding of the inner fillet weld of a flange. The technical solution adopted is:

[0004] An automatic grinding device for the internal fillet weld of a flange comprises a rotating frame, including a fixing button in the center, and three brackets extending outward with the fixing button as the center of the circle, the three brackets being of the same length and arranged at equal intervals in the circumferential direction; the brackets are provided with adjustment holes, and a clamp is fixed to the bracket by cooperating with a spring latch through the adjustment holes, and the clamp clamps a traveling mechanism, and the traveling mechanism is connected to a grinding mechanism through an automatic flexible feeding mechanism. With the fixing button as the center of the circle, the three brackets are combined to form a main bracket. The adjustment holes provided on the brackets can be used to adjust the position of the clamp by inserting spring latches into the adjustment holes at different positions, thereby adjusting the traveling mechanism and the grinding mechanism. By adjusting the traveling mechanism and the grinding mechanism on the three brackets, the present invention can be applied to flanges of different sizes. The walking mechanism and the grinding mechanism can achieve the purpose of flexible relative expansion and contraction through the automatic flexible feeding mechanism. When the grinding wheel of the grinding mechanism encounters the convex point of the weld, the automatic flexible feeding mechanism can make the grinding mechanism flexible and contract horizontally relative to the walking mechanism, and can automatically adjust along the rotating rack track according to the height of the weld. With this automatic flexible feeding mechanism, when continuously grinding the weld, it can automatically adjust according to the direction of the uneven surface of the weld, better imitating manual grinding of the weld.

[0005] The walking mechanism is longitudinally provided with a rotating shaft, a walking wheel is fixed at the bottom of the rotating shaft, and a rear end supporting wheel is arranged below the walking wheel; the grinding mechanism also has a longitudinal pneumatic transmission feeding mechanism, a grinding wheel is connected to the bottom of the transmission shaft of the longitudinal pneumatic transmission feeding mechanism, and the grinding mechanism is also fixed with a front end supporting wheel, and the front end supporting wheel is arranged in parallel with the longitudinal pneumatic transmission feeding mechanism; the front end supporting wheel and the rear end supporting wheel are in contact with the upper surface and the lower surface of the flange end respectively. When grinding the weld meat, due to the uneven weld meat, the longitudinal pneumatic transmission feeding mechanism is combined with the automatic flexible feeding mechanism. When encountering the uneven weld meat, the grinding wheel follows the weld line up, down, left and right, which can make the grinding process softer and smoother, and more realistically imitate the manual grinding of the weld meat. The front end supporting wheel and the rear end supporting wheel are respectively located on the upper surface and the lower surface of the flange end face, which play the role of clamping the flange in the longitudinal direction, ensuring that the automatic grinding device will not fall during the grinding process.

[0006] In order to better implement the above-mentioned automatic grinding device for internal fillet welds of flanges, specifically, a universal joint is fixed on the fixing button, and the air supply pipeline of the longitudinal pneumatic transmission feeding mechanism is connected to the air source through the universal joint. The universal joint connects the origin with the longitudinal pneumatic transmission feeding mechanism, and the origin pipelines of the longitudinal pneumatic transmission feeding mechanisms on the three brackets are all connected to the universal joint and communicated with the origin.

[0007] In order to better implement the above-mentioned automatic grinding device for the internal fillet weld of a flange, specifically, the rear end wheel is fixed on a support plate, the support plate is fixed on the rotating shaft through a nut, and the head of the rear end wheel is retractable. The head of the rear end wheel can be retracted up and down to adapt to the elastic clamping of the flange during the working process of the present invention, which not only ensures that the clamped flange does not fall off, but also ensures that the flange surface is not damaged.

[0008] In order to better implement the above-mentioned automatic grinding device for the internal fillet weld of the flange, specifically, the grinding wheel is in contact with the internal fillet weld of the flange, and the traveling wheel is in contact with the outer surface of the flange end. The grinding wheel and the traveling wheel play the role of clamping the flange in the lateral direction, and during the operation, one of the three grinding wheels rotates clockwise, and two of the three grinding wheels rotate counterclockwise; or two of the three grinding wheels rotate clockwise, and one rotates counterclockwise. Through this clockwise and counterclockwise selection method, the grinding device can be automatically rotated as a whole on the flange to perform circumferential grinding on the internal fillet weld of the flange. The relatively rotating grinding wheel combined with the traveling wheel ensures that the flange is clamped during the grinding process, and the flange and the grinding device will not be separated, thereby avoiding dangerous accidents and ensuring the safety performance of the grinding process.

[0009] In order to better implement the above-mentioned automatic grinding device for the inner corner weld of a flange, specifically, the running wheel is a rubber wheel. The rubber wheel will not cause damage to the flange, and has elasticity, which can not only play a supporting role, but also protect the appearance of the flange from damage.

[0010] In order to better implement the above-mentioned automatic grinding device for internal fillet welds of flanges, specifically, the grinding mechanism and the walking structure are controlled by an external control system. The rotation direction, rotation speed, time of the grinding wheel, and the origin of the longitudinal pneumatic transmission feeding mechanism are all controlled by the external control system.

[0011] In order to better implement the above-mentioned automatic grinding device for the internal fillet weld of a flange, specifically, the side of the clamp is also provided with a fine-tuning bolt, and the fine-tuning bolt passes through the side wall of the clamp and contacts the walking mechanism. The fine-tuning bolt contacts the walking mechanism, and tightening the fine-tuning bolt makes the walking mechanism closer to the flange, thereby making the walking wheel closer to the flange and pressing the flange. By adjusting the fine-tuning bolt, the walking wheel can be close to the outer wall of the flange, pressing the outer wall of the flange, and better clamping the flange.

[0012] The present invention is safe and reliable. The grinding wheel flexibly presses the weld to be ground through the feeding mechanism. The overall weight of the device is light (total weight is about 8KG), and it is easy to disassemble and assemble. It can be fully automatically ground, which reduces labor costs, improves work efficiency, and ensures work safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention

[0014] Figure 2 is a schematic diagram of the present invention when used on a flange;

[0015] Among them: 1- bracket, 2- adjustment hole, 3- clamp, 4- spring latch, 5- walking mechanism, 6- walking wheel, 7- grinding mechanism, 8- pneumatic transmission feeding mechanism, 9- grinding wheel, 10- rear end supporting wheel, 11- front end supporting wheel, 12- universal joint, 13- fine-tuning bolt. DETAILED DESCRIPTION

[0016] The present invention will be further described with reference to the accompanying drawings. Figure 1The device for automatically grinding the internal fillet weld of a flange shown in the figure has a main rotating frame, a fixing button in the center of the frame, and three brackets 1 extending outward in a circle with the fixing button. The three brackets are of the same length and are arranged at equal intervals in the circumferential direction. The brackets are provided with adjustment holes 2, and spring latches 4 cooperate with the adjustment holes to fix the clamp 3 on the brackets. The clamp holds a traveling mechanism 5, and the traveling mechanism is connected to a grinding mechanism 7 through an automatic flexible feeding mechanism. The side wall of the clamp is provided with a fine-tuning bolt 13, which passes through the side wall of the clamp and contacts the traveling mechanism. A traveling wheel 6 is fixed to the bottom of the main shaft of the traveling mechanism, and a rear end supporting wheel 10 is arranged below the traveling wheel. The rear end supporting wheel is fixed to the main shaft of the traveling mechanism through a bottom plate and contacts the lower surface of the flange end face.

[0017] The grinding mechanism is provided with a longitudinal pneumatic transmission feeding mechanism 8, a grinding wheel 9 is fixed at the bottom of the main shaft of the pneumatic transmission feeding mechanism, and the grinding mechanism is also provided with a front-end supporting wheel 11, which is arranged in parallel with the pneumatic transmission feeding mechanism. The front-end supporting wheel contacts the upper surface of the flange end surface, and the front-end supporting wheel cooperates with the rear-end supporting wheel to clamp the flange longitudinally. The grinding wheel cooperates with the traveling wheel to clamp the flange laterally. The pneumatic transmission feeding mechanism cooperates with the automatic flexible feeding mechanism to imitate the manual method of grinding the internal fillet weld of the flange, making the grinding more humanized and smoother.

[0018] A universal joint 12 is installed on the fixing button, and the origin pipeline of the pneumatic transmission feeding mechanism is connected with the universal joint, and the origin enters the pneumatic transmission feeding mechanism through the universal joint and the origin pipeline.

[0019] A control system is arranged outside the device, and the walking mechanism and the grinding mechanism are all controlled by the control system.

[0020] When the present invention is used, according to the caliber specification of the pipe to be polished, the walking mechanism and the grinding mechanism are adjusted by the spring latch, moved to a suitable position, and then the fine-tuning bolt is adjusted so that the walking wheel presses the outer wall of the flange. Subsequently, the front-end supporting wheel and the rear-end supporting wheel are adjusted so that the device is installed compactly without looseness. The pneumatic transmission feeding mechanism is connected to the air source, and the equipment is started through the control system. Two of the three grinding wheels are set to rotate clockwise and one grinding wheel rotates counterclockwise to start grinding. Since the three grinding wheels rotate in different directions, the present invention can rotate as a whole on the flange, and then grind the fillet weld inside the flange. During the working process of the present invention, the grinding wheel rotates on the inner surface of the flange, adheres to the fillet weld inside the flange for grinding, and when the grinding wheel and the walking wheel rotate relative to the flange, the front-end supporting wheel and the rear-end supporting wheel also move relative to the flange. The automatic flexible feeding mechanism and the longitudinal pneumatic transmission feeding mechanism work simultaneously, ensuring that the pneumatic grinding mechanism can be fine-tuned according to the actual weld meat during the grinding process to ensure the grinding quality.

Claims

1. An automatic grinding device for internal fillet welds of flanges, characterized in that: A rotating frame is provided, including a fixing button in the center, with the fixing button as the center of the circle, and three brackets (1) extending outward, the three brackets having the same length and being arranged at equal intervals in the circumferential direction; an adjustment hole (2) is opened on the bracket, a clamp (3) is matched with a spring latch (4) through the adjustment hole, and is fixed on the bracket, the clamp clamps a walking mechanism (5), and the walking mechanism is connected to a grinding mechanism (7) through an automatic flexible feeding mechanism; The walking mechanism is longitudinally provided with a rotating shaft, a walking wheel (6) is fixed at the bottom of the rotating shaft, and a rear end supporting wheel (10) is arranged below the walking wheel; the grinding mechanism is also provided with a longitudinal pneumatic transmission feeding mechanism (8), a grinding wheel (9) is connected to the bottom of the transmission shaft of the longitudinal pneumatic transmission feeding mechanism, and the grinding mechanism is also fixed with a front end supporting wheel (11), the front end supporting wheel and the longitudinal pneumatic transmission feeding mechanism are arranged in parallel; the front end supporting wheel and the rear end supporting wheel are respectively in contact with the upper surface and the lower surface of the flange end.

2. The automatic grinding device for inner fillet weld of flange according to claim 1, characterized in that: A universal joint (12) is fixed on the fixing button, and the air supply pipeline of the longitudinal pneumatic transmission feeding mechanism is connected to the air source through the universal joint.

3. The automatic grinding device for inner fillet weld of flange according to claim 1, characterized in that: The rear end leaning wheel is fixed on a supporting plate, the supporting plate is fixed on the rotating shaft through a nut, and the head of the rear end leaning wheel is telescopic.

4. The automatic grinding device for inner fillet weld of flange according to claim 1, characterized in that: The grinding wheel is in contact with the inner fillet weld of the flange, and the traveling wheel is in contact with the outer surface of the flange end.

5. The automatic grinding device for inner fillet weld of flange according to claim 1, characterized in that: The traveling wheels are rubber wheels.

6. The automatic grinding device for inner fillet weld of flange according to claim 1, characterized in that: The grinding mechanism and the walking mechanism are controlled by an external control system.

7. The automatic grinding device for inner fillet weld of flange according to claim 1, characterized in that: The side of the clamp is also provided with a fine-tuning bolt (13), which passes through the side wall of the clamp and contacts the walking mechanism.

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