Multifunctional pressure cylinder welding-polishing device

Abstract

The invention discloses a multifunctional pressure cylinder welding-grinding device which comprises a mechanical main arm, a telescopic connecting rod, an outer weld joint grinding device, a molten pool detection camera, an infrared temperature detection device, a welding gun head, an electromagnetic induction heating device, a cylinder pressure container, a base device, a clamp, a telescopic shaft, an inner weld joint grinding device and a visual and sensing device. The infrared temperature detection device and the molten pool detection camera are connected through a connecting rod and located on the two sides of the head of the welding gun. The outer welding seam polishing device is connected with the welding machine main arm through a telescopic connecting rod; the inner welding seam polishing device is connected with the base device through a telescopic shaft, a cylinder clamp is arranged on the outer side of the telescopic shaft and used for fixing cylinders with different diameters, and the visual and sensing device is assembled on the telescopic shaft of the inner welding seam polishing device so that the condition of welding seams in the cylinders can be observed conveniently. Defects and temperature in the welding process can be monitored in real time, high-precision control over welding seam polishing is achieved, and the machining efficiency and the welding joint quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding manufacturing, and in particular to a multifunctional pressure cylinder welding-grinding device. Background Art

[0002] Welding is a common processing technology, that is, connecting different parts under high temperature or high pressure, and is widely used in metals or other thermoplastic materials. With the development of technology, the types of welding have gradually diversified, mainly including arc, plasma beam, laser, stir friction welding, gas welding, etc., and welding grinding technology is an important part of production and processing, and its main purpose is to improve the quality and appearance of the weld.

[0003] Before welding, the processed groove must be polished to remove burrs, scale, oil stains, etc. at the processed groove; during the welding process, the positioning spot welding must be polished, the internal weld of the cylindrical pressure vessel must be polished, and the surface of each welding part during the cladding process must be polished and cleaned to prevent the generation of pores and surface oxides that affect the quality of the weld; after welding is completed, the weld is polished to make it smoothly transition with the parent material. Manual polishing has low manual polishing efficiency, high labor intensity, poor consistency of weld polishing, and poor polishing quality. The noise and dust generated by grinding and the sparks generated during the process cause harm to personnel. The generation of cracks during cladding has a serious impact on product quality, and the change state of the molten pool also has a certain impact on the quality of the weld. For the inside of the pressure vessel cylinder, incomplete penetration defects are prone to occur, and these defects cannot be found through appearance inspection. Summary of the invention

[0004] Based on the above technical problems, the present invention proposes a multifunctional pressure cylinder welding-grinding device to solve the problems of low manual grinding efficiency, poor grinding consistency of welds leading to poor grinding quality, noise and dust generated by grinding, and sparks generated during the process causing harm to personnel.

[0005] In order to solve the above technical problems, one of the purposes of the present invention is to provide a multifunctional pressure cylinder welding-grinding device, including a mechanical main arm 1, a telescopic connecting rod 2, an external weld grinding device 3, a molten pool detection camera 4, an infrared temperature detection device 5, a welding gun head 6, a cylindrical pressure vessel 8, a base device 9, a clamp 10, a telescopic shaft 11, an internal weld grinding device 12 and a visual and perception device 13. The devices work in coordination with each other.

[0006] The infrared temperature detection device 5 and the molten pool detection camera 4 are connected by connecting rods and are located on both sides of the welding gun head 6. The infrared temperature detection device 5 and the molten pool detection camera 4 can be freely rotated at multiple angles to realize multi-directional real-time monitoring of the weld, and the view conversion is realized by the computer. The operator can directly monitor the whole welding process through the view effect;

[0007] The external weld grinding device 3 is connected to the main arm 1 of the welding machine through a telescopic connecting rod 2, so as to realize the grinding of cylindrical welds of different diameters and realize the full-angle and uniform grinding of the welds;

[0008] The inner weld grinding device 12 is connected to the base device 9 through a telescopic shaft 11. The outer side of the telescopic shaft 11 is a cylinder clamp 10, which fixes cylinders of different diameters. The visual and perception device 13 is assembled on the telescopic shaft 11 of the inner weld grinding device to observe the weld condition inside the cylinder.

[0009] Furthermore, the device also includes an electromagnetic induction heating device (7), which is located on one side of the welding gun head (6) to preheat the weld and simultaneously dry out moisture on the weld surface, thereby reducing defects such as weld porosity.

[0010] Furthermore, the grinding wheel is connected with the telescopic connecting rod to form an external weld grinding device; the grinding wheel is connected with the telescopic connecting rod and the telescopic shaft to form an internal weld grinding device;

[0011] Furthermore, the angle of the middle grinding wheel of the outer weld grinding device (3) is determined according to the angle of the groove and the thickness of the material. The grinding wheels on both sides are trapezoidal in shape and are connected to the middle grinding wheel via a telescopic connecting rod. The middle grinding wheel can be disassembled to achieve grinding of the sides and grooves of grooves with different angles.

[0012] Furthermore, when the welding-grinding device is used for cleaning before welding and locating the weld, the angle range of the intermediate grinding wheel is a groove angle of 60°-80°, and the applicable material thickness is 5mm-10mm. During cleaning before welding, the grinding wheel is brought into contact with the groove surface and the cylinder surface through the telescopic connecting rod, and the extension of the telescopic connecting rod is controlled to be 0.1-0.3mm, thereby achieving grinding and cleaning of the part to be welded.

[0013] Furthermore, a grinding wheel is used to grind the oxide scale and surface impurities on the surface of each weld. The telescopic connecting rod and the grinding wheel are connected by bolts. A wire brush is used to grind the outer surface of the grinding wheel. The grinding path of the grinding wheel is achieved through the telescopic effect of the telescopic rod, so that the wire brush contacts the surface of each weld. The telescopic connecting rod can slide left and right with a sliding range of 0.1mm-10mm, thereby achieving uniform and all-round grinding of the weld and making a smooth transition between the weld and the base material.

[0014] Furthermore, for the grinding of the positioning points, the grinding of the oxide scale and surface impurities on the surface of each weld, the connecting rod is extended gradually when the cylinder rotates one circle, and the extension range of the telescopic connecting rod is controlled to be 0.1mm-2mm; and the grinding wheel can slide according to the outer contour of the weld, until the grinding reaches the required requirement and stops.

[0015] Further, the cylinder diameter is larger than the minimum diameter of the inner grinding wheel contraction.

[0016] Furthermore, the internal grinding wheel is also connected to the telescopic shaft through a telescopic connecting rod, and the telescopic connecting rod can be extended and retracted at the same time. After grinding the circle, the telescopic connecting rod is extended by 0.1mm-2.5mm at the same time until the weld and the base material are smoothly transitioned. The visual and perception device is connected to the grinding wheel device through a connecting rod to realize real-time observation of the inner wall of the cylinder and precise positioning.

[0017] The above one or more technical solutions of the present invention have at least one or more of the following technical effects: The present invention improves the quality and appearance of the weld. The welding grinding device can monitor the defects and temperature of the welding process in real time, realize high-precision control of the weld grinding, and improve the processing efficiency and the quality of the weld joint.

[0018] When grinding the internal welds of cylindrical pressure vessels, visual and perception technologies can be used to identify and accurately locate the areas to be ground, so that the welds and the base material have a smooth transition.

[0019] Control the interlayer temperature and use infrared detection devices to detect the temperature of the weld area to prevent heat accumulation and generate huge stress. At the same time, ensure that there is a certain temperature range during the welding process to preheat the subsequent welding process. The electromagnetic induction heating device preheats the weld, removes moisture from the weld surface, and reduces defects such as pores to facilitate subsequent welding;

[0020] The molten pool detection camera is used to monitor the molten pool in the welding process in real time, and monitor the morphology of the molten pool, the position of the wire, the shape of the arc, and the state of inclusions and bubbles formed in the molten pool in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : A schematic structural diagram of the welding and grinding device of the present invention;

[0022] Figure 2 : Schematic diagram of grinding wheel before welding and at positioning points;

[0023] Figure 3 : Schematic diagram of grinding wheel for each pass;

[0024] Figure 4 : Schematic diagram of the base and internal grinding device structure;

[0025] Figure 5: Schematic diagram of the internal weld grinding wheel structure;

[0026] In the figure: 1-mechanical main arm; 2-telescopic connecting rod; 3-external weld grinding device; 4-molten pool detection camera; 5-infrared temperature detection device; 6-welding gun head; 7-electromagnetic induction heating device; 8-cylindrical pressure vessel; 9-base device; 10-clamp; 11-telescopic shaft; 12-internal weld grinding device; 13-vision and perception device. Specific implementation plan

[0027] The present invention discloses a multifunctional pressure cylinder welding-grinding device. During the welding process, the molten pool is observed by a molten pool detection camera. Since the welding process is slow and it is difficult to ensure the preheating effect of the weld, an electromagnetic induction heating device is used for preheating treatment. At the same time, an infrared temperature detector is used to monitor the temperature of each weld so that the preheating temperature reaches the required temperature. In the welding cavity and when welding is completed, grinding treatment is performed by a grinding device.

[0028] The grinding of the internal weld of the cylindrical pressure vessel is achieved through the telescopic shaft, vision, sensing device and grinding wheel. The grinding part is identified and accurately located to make a smooth transition between the weld and the base material. Secondly, the generation of cracks in the cladding process has a serious impact on the quality of the product. Therefore, the interlayer temperature must be controlled, and the temperature of the weld area must be detected by an infrared detection device to prevent heat accumulation and huge stress. At the same time, a certain temperature range must be ensured during the welding process to preheat the subsequent welding process. The changing state of the molten pool also has a certain impact on the quality of the weld. The molten pool detection camera is used to monitor the molten pool in the welding process in real time, and the morphology of the molten pool, the position of the wire, the shape of the arc, and the inclusions and bubbles formed in the molten pool are monitored in real time.

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the obtained embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0030] like Figure 1As shown, a multifunctional pressure cylinder welding-grinding device includes: a mechanical main arm 1; a telescopic connecting rod 2; an external weld grinding device 3; a molten pool detection camera 4; an infrared temperature detection device 5; a welding gun head 6; an electromagnetic induction heating device 7; a cylindrical pressure vessel 8; a base device 9; a clamp 10; a telescopic shaft 11; an internal weld grinding device 12; and a visual and sensing device 13. The infrared temperature detection device 5, the molten pool detection camera 4, and the electromagnetic induction heating device 7 are respectively located on both sides of the welding mechanical arm 1, connected by a connecting rod, and the welding process is monitored and preheated in real time; the weld external grinding device 3 is connected to the welding mechanical main arm 1 to grind the cylinder weld; the internal weld grinding device 12 is assembled on the base 9 assembled on the cylinder body 8, enters the cylinder through the cylinder mouth, and grinds the internal weld. The visual and sensing device 13 is assembled on the retracted rod of the internal weld grinding device 12 to observe the internal weld of the cylinder.

[0031] The infrared temperature detection device 5 and the molten pool detection camera 4 can realize multi-angle free rotation, realize multi-directional real-time monitoring of the weld, and realize view conversion through a computer. The operator can directly monitor the entire welding process through the view effect. The electromagnetic induction heating device 7 can preheat the weld, remove moisture from the weld surface, and reduce defects such as pores. Through infrared detection, the interlayer temperature during multiple welding passes is measured, and heat accumulation is prevented while ensuring preheating. When the interlayer temperature is 60°C, the next welding pass is carried out.

[0032] The external weld grinding device 3 is connected to the main arm 1 of the welding machine through a telescopic connecting rod, which can realize full-angle and uniform grinding of cylindrical welds of different diameters. The connecting rod 2 and the grinding wheel can be disassembled. Figure 2 The grinding wheels shown in the figure, where the angle of the middle grinding wheel can be set according to the size of the groove angle and the thickness of the material, to remove burrs, scales, oil stains, etc. at the groove processing; the grinding wheels on both sides are trapezoidal in shape, connected to the middle grinding wheel through a telescopic connecting rod, to achieve grinding of the sides of grooves at different angles, and the device can be disassembled. When cleaning before welding and locating the weld point, the angle range of the middle grinding wheel is 65° for the groove angle, and the applicable material thickness is 6mm. When cleaning before welding, the grinding wheel is in contact with the groove surface and the cylinder surface through the telescopic connecting rod, and the extension of the telescopic connecting rod is controlled to be 0.2mm, so as to achieve grinding and cleaning of the welded part.

[0033] The grinding of the oxide scale and surface impurities on the surface of each weld can be done by the following methods: Figure 3The grinding wheel shown in the figure is connected between the telescopic connecting rod 2 and the grinding wheel by bolts, and the outer surface of the grinding wheel is ground with a wire brush. The grinding path of the grinding wheel is achieved through the telescopic effect of the telescopic rod, so that the wire brush contacts the surface of each weld. The telescopic connecting rod can slide left and right, with a sliding range of 3mm, to achieve uniform and all-round grinding of the weld, so that the weld and the base material have a smooth transition.

[0034] For the grinding of positioning points, the grinding of oxide scale and surface impurities on the surface of each weld, the connecting rod is extended gradually after the cylinder rotates one circle, and the extension range of the telescopic connecting rod is controlled to be 1mm; and the grinding wheel can slide according to the outer contour of the weld, until the grinding reaches the required requirement and stops.

[0035] The internal weld grinding device is connected to the base through a telescopic shaft. The outer side of the telescopic shaft is a cylindrical fixture 10, which can fix cylinders of different diameters (cylinder diameter is greater than the minimum diameter of the internal grinding wheel). The internal grinding wheel is also connected to the telescopic shaft 11 through a telescopic connecting rod, and the telescopic rod can be extended and retracted at the same time. After grinding a circle, the telescopic connecting rod is extended by 1.5mm at the same time until the weld and the base material are smoothly transitioned. The internal grinding wheel is as shown in the attached Figure 5 The visual and sensing device is connected to the grinding wheel device through a connecting rod to achieve real-time observation of the inner wall of the cylinder and precise positioning.

[0036] Through the detection device, the whole welding process is monitored in real time, potential problems are discovered and solved in time, and product quality and work efficiency are improved; at the same time, labor costs are reduced to avoid eye injuries of operators during work. Through the internal and external weld grinding device, the problems of low manual grinding efficiency, high labor intensity, poor grinding consistency of welds leading to poor grinding quality, noise and dust generated by grinding, and sparks generated during the process causing harm to personnel are solved, and the quality and appearance of welds are improved. Welding and grinding of cylinders of different diameters are realized.

[0037] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A multifunctional pressure cylinder welding-grinding device, characterized in that: The device comprises: a mechanical main arm (1), a telescopic connecting rod (2), an external weld grinding device (3), a molten pool detection camera (4), an infrared temperature detection device (5), a welding gun head (6), a cylindrical pressure container (8), a base device (9), a clamp (10), a telescopic shaft (11), an internal weld grinding device (12) and a visual and sensing device (13), and each device works in coordination with each other. The infrared temperature detection device (5) and the molten pool detection camera (4) are respectively connected by connecting rods and are located on both sides of the welding gun head (6). The infrared temperature detection device (5) and the molten pool detection camera (4) can freely rotate at multiple angles to achieve multi-directional real-time monitoring of the weld, and realize view conversion through a computer, so that the operator can directly monitor the entire welding process through the view effect; The external weld grinding device (3) is connected to the main arm of the welding machine (1) via a telescopic connecting rod (2), so as to realize the grinding of cylindrical welds of different diameters and realize the full-angle and uniform grinding of the welds; The inner weld grinding device (12) is connected to the base device (9) via a telescopic shaft (11). The outer side of the telescopic shaft (11) is a cylinder clamp (10). The clamp (10) fixes cylinders of different diameters. The visual and sensing device (13) is assembled on the telescopic shaft (11) of the inner weld grinding device to observe the weld condition inside the cylinder.

2. The multifunctional pressure cylinder welding-grinding device according to claim 1 is characterized in that: The device also includes an electromagnetic induction heating device (7), which is located on one side of the welding gun head (6) to preheat the weld and simultaneously dry the moisture on the weld surface, thereby reducing weld porosity defects.

3. The multifunctional pressure cylinder welding-grinding device according to claim 1 is characterized in that: The angle of the middle grinding wheel of the outer weld grinding device (3) is determined according to the angle of the groove and the thickness of the material. The grinding wheels on both sides are trapezoidal in shape and are connected to the middle grinding wheel via a telescopic connecting rod. The middle grinding wheel can be disassembled to achieve grinding of the sides and grooves of grooves with different angles.

4. The multifunctional pressure cylinder welding-grinding device according to claim 3 is characterized in that: When the welding-grinding device is used for cleaning before welding and locating weld points, the angle range of the intermediate grinding wheel is 60°-80° for the groove angle, and the applicable material thickness is 5mm-10mm. During cleaning before welding, the grinding wheel is brought into contact with the groove surface and the cylinder surface through the telescopic connecting rod, and the extension of the telescopic connecting rod is controlled to be 0.1-0.3mm, so as to achieve grinding and cleaning of the part to be welded.

5. The multifunctional pressure cylinder welding-grinding device according to claim 1 is characterized in that: The grinding of the oxide scale and surface impurities on the surface of each weld is performed using a grinding wheel. The telescopic connecting rod and the grinding wheel are connected by bolts. A wire brush is used to grind the outer surface of the grinding wheel. The grinding path of the grinding wheel is achieved through the telescopic effect of the telescopic rod, so that the wire brush contacts the surface of each weld. The telescopic connecting rod can slide left and right, with a sliding range of 0.1mm-10mm, to achieve uniform and all-round grinding of the weld, so that a smooth transition is made between the weld and the parent material.

6. The multifunctional pressure cylinder welding-grinding device according to claim 5, characterized in that: For the grinding of positioning points, oxide scale and surface impurities on each weld surface, the connecting rod is extended gradually after the cylinder rotates one circle, and the extension range of the telescopic connecting rod is controlled to be 0.1mm-2mm; and the grinding wheel can slide according to the outer contour of the weld, until the grinding reaches the required requirement and stops.

7. The multifunctional pressure cylinder welding-grinding device according to claim 1 is characterized in that: The cylinder diameter is larger than the minimum diameter of the inner grinding wheel contraction.

8. The multifunctional pressure cylinder welding-grinding device according to claim 1 is characterized in that: The internal grinding wheel is also connected to the telescopic shaft through a telescopic connecting rod, and the telescopic connecting rod can be extended and retracted at the same time. After grinding the circle, the telescopic connecting rod is extended by 0.1mm-2.5mm at the same time until the weld and the parent material are smoothly transitioned. The visual and perception device is connected to the grinding wheel device through a connecting rod to achieve real-time observation of the inner wall of the cylinder and precise positioning.

9. The multifunctional pressure cylinder welding-grinding device according to claim 3, characterized in that: The grinding wheel is connected with the telescopic connecting rod to form an external weld grinding device; the grinding wheel is connected with the telescopic connecting rod and the telescopic shaft to form an internal weld grinding device.

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