Hydraulic oil cylinder welding equipment and welding method

Abstract

The invention provides hydraulic oil cylinder welding equipment and a welding method, and belongs to the technical field of hydraulic oil cylinder welding. The hydraulic oil cylinder welding equipment comprises a fixing unit, a welding robot is arranged on one side of the fixing unit, and the fixing unit is used for installing a to-be-welded part and can drive the to-be-welded part to rotate; the fixing unit is provided with a lifting unit used for supporting a to-be-welded part, and the machining device further comprises a mounting frame mounted on the lifting unit and a machining disc mounted on the mounting frame. A to-be-welded part slowly rotates, meanwhile, a machining disc is arranged, a blade is arranged on the machining disc, when the machining disc rotates and gets close to the to-be-welded part, the blade machines a groove in the to-be-welded part, and due to the fact that the machining angle of the blade is fixed, compared with manual groove grinding, the device is higher in groove machining precision and efficiency, and the machining efficiency is improved. And meanwhile, a large amount of manpower is saved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydraulic cylinder welding, and particularly relates to a hydraulic oil cylinder welding device and a welding method. BACKGROUND

[0002] The aviation equipment industry cluster needs to implement the national large aircraft strategy, strengthen the research and development and industrialization of engine whole machines, unmanned aerial vehicle whole machines and key materials and parts, improve the matching capabilities of airframes, avionics systems and equipment, hydraulic systems and test testing, promote the development of commercial aircraft, light sport aircraft and other general aviation whole machines and special unmanned aerial vehicle whole machines, and accelerate the cultivation of the domestic large aircraft industry chain. As the core executive element of the aircraft hydraulic system (usually referred to as the actuator cylinder), the hydraulic cylinder for the aviation field involves multiple disciplines such as material science, fluid mechanics, precision manufacturing and extreme environment adaptability. In the production of the hydraulic cylinder, a welding device is usually needed to weld the cylinder barrel and the cylinder body base of the hydraulic cylinder, and arc welding is one of the most common welding methods.

[0003] A welding device for a hydraulic cylinder is disclosed in Chinese Patent No. CN112264761B, which comprises a mounting seat, a first mounting groove is formed on one side of the mounting seat, a clamping assembly for clamping the shell to rotate is arranged at one end of the first mounting groove, a hollow welding head is arranged in the first mounting groove, both ends of the welding head are in communication with the outside world, the welding nozzle of the welding head is vertically arranged downward, an adjusting piece for adjusting the height of the welding head is arranged in the first mounting groove, a rectifier is fixed on the side wall of the mounting seat, the welding nozzle of the welding head is electrically connected to the rectifier through a wire, a second mounting groove is formed on the side of the mounting seat away from the first mounting groove, a conveying assembly for conveying welding wire to the welding nozzle is arranged in the second mounting groove. The present application has the effect of improving the welding quality of the hydraulic cylinder.

[0004] In the hydraulic cylinder welding process, in order to avoid the lack of penetration defects caused by insufficient welding joint penetration, a welding groove meeting the process requirements needs to be prefabricated at the joint before welding. However, in the prior art, most small and medium batch production or maintenance scenes still rely on manual handheld angle grinder for groove machining. This method has significant technical shortcomings: first, the machining precision is difficult to control, and the groove angle deviation can reach ±3°, the chamfer size fluctuation is more than ±0.5mm, and the root gap unevenness is more than 2mm, which cannot meet the precise requirements of the molten pool filling space of the thick-walled joint (thickness≥20mm) of the hydraulic cylinder; second, the machining consistency is poor, and the groove shapes of different workpieces in the same batch are significantly different, which makes it difficult to unify the subsequent welding parameters (such as current, voltage, and speed), and the welding defect rate (lack of penetration, slag inclusion, and porosity) is high; third, the machining efficiency is low, and for the annular groove of the cylinder barrel with a diameter of more than φ500mm, manual polishing needs to be divided into multiple segments, and the single groove machining time is more than 2 hours, and the groove surface roughness after polishing is Ra25-50μm, which needs to be additionally polished for 1-2 times; fourth, the labor cost and quality risk are superimposed, not only skilled operators need to be equipped, but also the groove sidewall is easily scratched (depth more than 0.2mm) during polishing due to improper force control, which ultimately affects the overall service life of the hydraulic cylinder. SUMMARY

[0005] The purpose of the present application is to provide a hydraulic cylinder welding device and welding method, which aims to solve the problem that the welding device for the hydraulic cylinder in the prior art cannot process the groove, and manual processing of the groove cannot guarantee the machining precision of the groove, thereby affecting the overall life of the hydraulic cylinder.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a hydraulic cylinder welding device, comprising: a fixed unit, a welding robot is arranged on one side of the fixed unit, the fixed unit is used for mounting a to-be-welded piece and can drive the to-be-welded piece to rotate, a lifting unit for supporting the to-be-welded piece is arranged on the fixed unit, and the hydraulic cylinder welding device further comprises a mounting frame mounted on the lifting unit and a machining disc mounted on the mounting frame, wherein: The mounting frame comprises a vertical plate arranged on the lifting unit, a groove for avoiding the to-be-welded piece is arranged on the vertical plate, a rotating shaft penetrating through the vertical plate is arranged on the vertical plate, a swing frame is arranged on one side of the rotating shaft, the machining disc is mounted on one end of the swing frame located at the top, an eccentric piece is arranged on the end of the rotating shaft away from the swing frame, a push rod is arranged at the eccentric position of the eccentric piece, a sliding piece is mounted with a pushing piece, when the pushing piece abuts against the push rod and pushes the push rod to move, the eccentric piece can be rotated, and the swing frame can drive the machining disc to move close to the cylinder barrel through the rotating shaft; The machining disc can rotate, a blade is arranged on the machining disc, and the rotation of the machining disc can drive the blade to rotate.

[0007] Further, the machining disc comprises a disc body, is arranged at one end of the swing frame close to the top, and mounting grooves are arranged on both sides of the disc body; sliding plates that slide along the radial direction of the disc body are arranged on the side walls of the mounting grooves; and the blades are fixedly arranged on the sliding plates.

[0008] Further, an axle body is arranged at the center of the disc body and rotates; an arc-shaped plate is arranged inside the mounting groove on the axle body; the arc-shaped plate is arranged in a non-axial manner between the axle body; one end of the arc-shaped plate close to the axle body is fixedly connected to the axle body; one end of the sliding plate close to the axle body is provided with a sliding groove; the arc-shaped plate slides inside the sliding groove; and an avoiding groove for accommodating the arc-shaped plate is further arranged in the disc body.

[0009] Further, a third driving source is arranged at one end of the swing frame below; the third driving source drives the axle body to rotate through a transmission structure; and the rotating shaft is arranged between the third driving source and the disc body and close to the third driving source.

[0010] Further, an arc-shaped groove is arranged on the vertical plate; a sliding piece is arranged to slide inside the arc-shaped groove; a fan-shaped gear rack is arranged at the bottom of the sliding piece; a worm is arranged on the vertical plate and engages with the gear rack; and a second driving source is further arranged on one side of the vertical plate and drives the worm to rotate.

[0011] Further, a flat surface is arranged at one end of the arc-shaped plate away from the axle body; and the flat surface can be supported at the bottom of the sliding plate.

[0012] Further, the disc body is provided with blades on both sides and the blades are arranged inside the mounting grooves; the top of each blade is provided with an inclined surface; when the rotation tracks of the top ends of the two blades coincide, the inclined surfaces of the two blades form a V-shaped structure; each of the two blades can be multiple; and the two blades are arranged in a staggered manner.

[0013] Further, a counterweight is arranged at the lower half of the disc body; and a steel wire brush is arranged on the counterweight.

[0014] Further, a plurality of notches are arranged at the edge of the disc body, so that the disc body forms a plurality of knock teeth.

[0015] A hydraulic oil cylinder welding method comprises the following steps: S1, mounting the to-be-welded piece on the fixed unit and supporting the to-be-welded piece through the lifting unit; S2, driving the to-be-welded piece to slowly rotate through the fixed unit; S3, starting the pushing piece to make the pushing piece push the push rod to move, so as to drive the machining disc to approach the to-be-welded piece; S4, the blade on the machining disc is in contact with the to-be-welded piece and rotates at a constant speed together with the to-be-welded piece, so that a groove can be machined on the to-be-welded piece.

[0016] Compared with the prior art, the present application has the following advantages: 1. The to-be-welded piece slowly rotates, and the machining disc is arranged, and the blade is arranged on the machining disc. When the machining disc rotates and approaches the to-be-welded piece, the blade machines a groove on the to-be-welded piece. Since the machining angle of the blade is fixed, the precision of machining the groove is higher, and the efficiency is higher, and a large amount of manpower is saved.

[0017] 2. After welding a layer, the disc body repeatedly knocks the weld, so that the welding slag on the weld can be cleaned, and the quality of the lower layer welding is avoided. DETAILED DESCRIPTION

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application, and do not constitute a limitation on the present application. In the drawings: Figure 1 is a structural schematic view of a specific embodiment in the present application; Figure 2 is a structural schematic view of a specific embodiment in the present application; Figure 3 is a structural schematic view of a specific embodiment in the present application; Figure 4 is a structural schematic view of a specific embodiment in the present application; Figure 5 is a structural schematic view of a specific embodiment in the present application; Figure 6 is a structural schematic view of a specific embodiment in the present application; Figure 7 is a structural schematic view of a specific embodiment in the present application; Figure 8 is a structural schematic view of a specific embodiment in the present application; Figure 9 is an axonometric sectional view of a specific embodiment in the present application.

[0019] In the figure: 1, welding robot; 2, fixed unit; 21, chassis; 22, mounting seat; 23, screw rod; 24, first driving source; 25, chuck; 3, lifting unit; 31, lifting frame; 32, adjusting wheel; 33, support hole; 34, support frame; 4, mounting frame; 41, vertical plate; 42, groove; 43, arc-shaped slot; 44, sliding piece; 445, rack; 45, worm; 46, swing structure; 461, rotating shaft; 462, swing frame; 463, eccentric piece; 464, lever; 465, pushing piece; 5, machining disc; 51, disc body; 511, mounting slot; 512, avoiding slot; 52, blade; 53, shaft body; 531, arc-shaped plate; 532, plane; 54, sliding plate; 6, third driving source; 7, counterweight; 8, steel wire brush. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-9 The present application provides the following technical solutions: a hydraulic oil cylinder welding device, comprising a welding robot 1, a fixed unit 2, a lifting unit 3, a mounting frame 4 and a machining disc 5. The welding robot 1 and the fixed unit 2 are placed on the ground, the fixed unit 2 is used for fixing the oil cylinder barrel and the oil cylinder base, and the two are coaxially arranged, and the fixed unit 2 can also drive the oil cylinder barrel and the oil cylinder base to rotate synchronously, the lifting unit 3 is located at the bottom of the oil cylinder barrel and is used for supporting the oil cylinder barrel, the mounting frame 4 is mounted on the lifting unit 3 and is used for mounting the machining disc 5, the machining disc 5 corresponds to the joint of the oil cylinder barrel and the oil cylinder base, when the machining disc 5 rotates and cooperates with the synchronous rotation of the oil cylinder barrel and the oil cylinder base, a bevel can be machined at the oil cylinder barrel and the oil cylinder base, which is convenient for welding the oil cylinder, and the welding robot 1 is located on one side of the fixed unit 2 and can weld the oil cylinder and the oil cylinder base when the oil cylinder barrel rotates.

[0022] The welding robot 1 is a very mature technology in the field, and the specific structure and working principle will not be described in detail.

[0023] Please refer to Figure 1 and Figure 9The fixing unit 2 comprises a base plate 21, two mounting seats 22 are arranged on the base plate 21, one of the two mounting seats 22 is fixed on the base plate 21, and the other mounting seat 22 slides on the base plate 21 along the length direction of the base plate 21, so that the two mounting seats 22 can approach or move away from each other, wherein the driving mode of the mounting seat 22 movement can be a hydraulic cylinder driving or a lead screw driving, in this embodiment, the lead screw driving is adopted, specifically, a lead screw 23 is threadedly connected to the bottom of the mounting seat 22, a first driving source 24 is arranged on one side of the base plate 21 to drive the lead screw 23 to rotate, and the lead screw 23 can be driven to rotate by the first driving source 24, so that the mounting seat 22 can slide on the base plate 21; The opposite side of the two mounting seats 22 is provided with a chuck 25 for clamping and fixing the oil cylinder barrel and the oil cylinder base respectively, and the two chucks 25 are coaxially arranged with each other, so as to ensure the coaxiality between the oil cylinder barrel and the oil cylinder base, and when the two chucks 25 rotate at the same time, the oil cylinder barrel and the oil cylinder base can rotate synchronously, and when the chucks 25 fix the oil cylinder barrel and the oil cylinder base respectively, the oil cylinder barrel and the oil cylinder base can approach or move away from each other by sliding the mounting seat 22 on the base plate 21; When the fixing unit 2 is used, first, the two chucks 25 clamp and fix the oil cylinder barrel and the oil cylinder base respectively, then one of the mounting seats 22 moves to make the oil cylinder barrel and the oil cylinder base approach and abut each other, then the chuck 25 rotates to drive the oil cylinder barrel and the oil cylinder base to rotate synchronously, and then the oil cylinder barrel and the oil cylinder base are further processed.

[0024] Please refer to Figure 1 and Figure 2 The lifting unit 3 comprises a lifting frame 31 mounted on the base plate 21, a plurality of adjusting holes 32 are arranged on the base plate 21, the lifting frame 31 is fixed on the base plate 21 by cooperating with the adjusting holes 32, and the position of the lifting frame 31 can be adjusted by switching the position of the adjusting holes 32, two groups of supporting wheels 33 are arranged on the lifting frame 31, the two groups of supporting wheels 33 are respectively arranged on the two sides of the oil cylinder barrel and abut against the outer surface of the oil cylinder barrel, and are used for supporting the oil cylinder barrel, the number of each group of supporting wheels 33 is not less than two, so as to provide more stable supporting effect, the axis of the supporting wheel 33 is parallel to the axis of the oil cylinder barrel, when the oil cylinder barrel rotates, the supporting wheel 33 can be driven to rotate by friction, a supporting frame 34 is arranged on the lifting frame 31, and the supporting wheel 33 is mounted on the supporting frame 34 and used for fixing the supporting wheel 33; In use, the position of the lifting frame 31 can be adjusted by adjusting the hole 32, so that the supporting position of the oil cylinder barrel can be adjusted, and then the lifting of the lifting frame 31 can drive the lifting of the supporting frame 34 and the supporting wheel 33, so that the supporting wheel 33 abuts against the outer surface of the oil cylinder barrel, thereby supporting the oil cylinder barrel to keep the axis of the oil cylinder barrel horizontal and avoid shaking when the oil cylinder barrel rotates.

[0025] Please refer to Figures 2-4 The mounting frame 4 comprises a vertical plate 41 fixed on the lifting frame 31, the vertical plate 41 is fixed on the lifting frame 31 by screws, the top of the vertical plate 41 is provided with an arc-shaped groove 42, the axis of the groove 42 is coaxial with the rotation axis of the chuck 25, the oil cylinder barrel is located inside the groove 42, and the axis of the oil cylinder barrel is also coaxial with the axis of the groove 42, an arc-shaped slot 43 is formed in the vertical plate 41, the arc-shaped slot 43 penetrates through the left and right sides of the vertical plate 41, and the arc-shaped slot 43 is concentrically arranged with the groove 42, a sliding member 44 is slidably arranged in the arc-shaped slot 43, a limiting structure (not shown in the figure) is arranged on the sliding member 44, the limiting structure can prevent the sliding member 44 from being separated from the inside of the arc-shaped slot 43, a fan-shaped gear rack 445 is arranged at the bottom of the sliding member 44, a worm 45 engaged with the gear rack 445 is arranged on the vertical plate 41, and a second driving source for driving the worm 45 to rotate is further arranged on one side of the vertical plate 41, when the second driving source drives the worm 45 to rotate, the gear rack 445 can be driven to move, so that the sliding member 44 can freely slide in the arc-shaped slot 43, a swing structure 46 is arranged on the sliding member 44, and the machining disc 5 is arranged on the swing structure 46, so that the machining disc 5 can be moved close to or away from the oil cylinder barrel through the swing structure 46.

[0026] Please refer to Figures 2-4, the swing structure 46 comprises a rotating shaft 461 penetrating the sliding piece 44 horizontally, the rotating shaft 461 can rotate freely on the sliding piece 44, the rotating shaft 461 is provided with a swing frame 462 away from one side of the supporting wheel 33, the machining disc 5 is installed at one end of the swing frame 462 located at the top, the rotating shaft 461 is provided with an eccentric piece 463 away from one end of the swing frame 462, the eccentric piece 463 is provided with a push rod 464 at the eccentric position of the eccentric piece 463, the sliding piece 44 is installed with a pusher 465, the pusher 465 is a hydraulic cylinder, and the telescopic end of the pusher 465 is provided with a stop plate for increasing the abutting area with the push rod 464, in order to make the swing frame 462 drive the machining disc 5 to contact the oil cylinder barrel when the pusher 465 pushes the push rod 464 to rotate, the push rod 464 is located in the range of the lower half circle of the eccentric piece 463, preferably, the push rod 464 is located in the fourth quadrant in the rotating plane of the eccentric piece 463, and the pusher 465 can abut against the push rod 464 through telescopic extension, so as to push the push rod 464 to move and rotate the eccentric piece 463, when the eccentric piece 463 rotates, the rotating shaft 461 can rotate and drive the swing frame 462 to rotate, so that the machining disc 5 approaches the oil cylinder barrel to process the oil cylinder barrel.

[0027] Please refer to Figures 4-8 , the machining disc 5 comprises a disc body 51, the disc body 51 is in the form of a disc, is arranged at one end of the swing frame 462 close to the top and can rotate on the swing frame 462, both sides of the disc body 51 are provided with blades 52, and the top of the blades 52 on both sides is provided with an inclined surface, when the rotation tracks of the top ends of the blades 52 on both sides coincide, the inclined surfaces of the blades 52 on both sides form a V-shaped structure, therefore, the machining disc 5 is in contact with the oil cylinder barrel and the oil cylinder base through the swing structure 46, and the machining disc 5 rotates at the same time, and the synchronous rotation of the oil cylinder barrel and the oil cylinder base can process a groove between the oil cylinder barrel and the oil cylinder base, the blades 52 on both sides can be multiple, and the blades 52 on both sides are staggered, so as to improve the processing efficiency of the groove; During the processing of the groove, first, the position of the lifting frame 31 and the adjustment of the chuck 25 to the clamping length of the oil cylinder barrel and the oil cylinder base are adjusted, so that the blade tips of the blades 52 on both sides are just located at the joint of the oil cylinder barrel and the oil cylinder base, then the machining disc 5 is driven to rotate, the swing frame 462 is driven to rotate through the swing structure 46, the swing frame 462 drives the machining disc 5 to approach the oil cylinder barrel and the oil cylinder base, the blades 52 on the machining disc 5 process a certain depth on the oil cylinder barrel and the oil cylinder base, then the chuck 25 is slowly driven to drive the oil cylinder barrel and the oil cylinder base to rotate, so that an annular groove can be processed at the joint of the oil cylinder barrel and the oil cylinder base.

[0028] Both sides of the disc body 51 are provided with mounting grooves 511, the number and position of which correspond to the blades 52, a sliding plate 54 which slides along the radial direction of the disc body 51 is arranged on the side wall of the mounting groove 511, and the blade 52 is fixedly arranged on the sliding plate 54, so that the sliding plate 54 can drive the blade 52 to slide along the radial direction of the disc body 51, when the sliding plate 54 moves outward, the turning surface of the blade 52 can be moved to the outside of the disc body 51, so that the blade 52 can be used to perform beveling on the cylinder barrel and the cylinder base, and when the beveling is completed, the sliding plate 54 can drive the blade 52 to retract into the disc body 51.

[0029] Please refer to Figures 5-8 In order to realize the sliding effect of the sliding plate 54, the shaft body 53 is rotatably arranged at the axis of the disc body 51 through a bearing (not shown in the figure), the shaft body 53 penetrates through both sides of the disc body 51, an arc-shaped plate 531 is arranged on the shaft body 53, the arc-shaped plate 531 is located inside the mounting groove 511, and the arc-shaped plate 531 is arranged at an angle with the shaft body 53, that is, the distance between one end of the arc-shaped plate 531 and the shaft body 53 gradually decreases to the distance between the other end of the arc-shaped plate 531 and the shaft body 53, and one end of the arc-shaped plate 531 close to the shaft body 53 is fixedly connected with the shaft body 53, in order to avoid interference between the arc-shaped plate 531 and the bearing, the bearing can be arranged as two, the arc-shaped plate 531 is arranged between the two bearings, so as to reduce the friction between the shaft body 53 and the disc body 51, a sliding groove is arranged at one end of the sliding plate 54 close to the shaft body 53, the arc-shaped plate 531 slides in the sliding groove, and a avoiding groove 512 for accommodating the arc-shaped plate 531 is further arranged in the disc body 51, when the disc body 51 and the shaft body 53 relatively rotate, the arc-shaped plate 531 can be moved into the avoiding groove 512, one end of the arc-shaped plate 531 away from the shaft body 53 is provided with a flat surface 532, which can be supported on the bottom of the sliding plate 54; When beveling is needed, the shaft body 53 is instantaneously rotated in the positive direction, under the action of the inertia of the disc body 51, the disc body 51 and the shaft body 53 relatively rotate, so that the sliding plate 54 slides on the arc-shaped plate 531, the sliding plate 54 slides from one end of the arc-shaped plate 531 close to the shaft body 53 to one end of the arc-shaped plate 531 away from the shaft body 53, until the arc-shaped plate 531 abuts against one side of the mounting groove 511, at this time, the sliding plate 54 is located on the flat surface 532, and the blade 52 on the sliding plate 54 is in the state of being ejected, at this time, the disc body 51 drives the blade 52 to rotate to perform beveling on the cylinder barrel and the cylinder base, since the flat surface 532 can support the sliding plate 54, the blade 52 can be prevented from sliding back along the arc-shaped plate 531 due to the radial force, when the beveling is completed, the shaft body 53 is instantaneously reversed, the sliding plate 54 slides along the arc-shaped plate 531 to the side close to the shaft body 53, so that the blade 52 can retract into the disc body 51.

[0030] Please refer to Figure 4A third driving source 6 is arranged at one end of the swing frame 462, the third driving source 6 is a motor, the output end penetrates to the swing frame 462 and is connected with a first sprocket, a second sprocket is arranged on the shaft body 53, the first sprocket and the second sprocket are connected with each other through a chain, when the third driving source 6 can drive the shaft body 53 to rotate through the sprocket structure, in addition, the rotating shaft 461 is located between the third driving source 6 and the disc body 51, and is close to the third driving source 6, a plurality of notches are arranged at the edge of the disc body 51, so that the disc body 51 forms a plurality of knock teeth; When the groove processing is completed, the oil cylinder barrel and the oil cylinder base need to be welded, because the wall thickness of the oil cylinder barrel is large, multi-layer welding needs to be carried out in the groove, and if the welding slag generated after welding is not removed, it will easily affect the quality of the next layer of welding, therefore, when the blade 52 is retracted into the inside of the disc body 51, the extension end of the pushing piece 465 is simultaneously moved away from the lever 464, so that the disc body 51 approaches the groove under the gravity of the third driving source 6, because the disc body 51 is constantly rotating, when the disc body 51 just contacts the welding slag of the groove, the disc body 51 slightly bounces up, because the gravity of the third driving source 6 always exists, after the disc body 51 bounces up, it approaches the groove again, so that the disc body 51 repeatedly knocks the welding slag after welding, promotes the welding slag to fall off, avoids the part of manual cleaning of the welding slag, and simultaneously, the repeated knocking of the disc body 51 to the joint causes the oil cylinder barrel and the oil cylinder base to vibrate slightly, the slight vibration can break the surface tension of the bubbles in the molten pool, helps the small bubbles to float to the surface of the molten pool and escape, thereby reducing the welding seam pores and improving the welding quality; In addition, the welding slag needs to be formed after the welding seam cools down, therefore, through the movement of the sliding piece 44, the position of the disc body 51 and the oil cylinder barrel and the oil cylinder base is adjusted, so that the distance between the disc body 51 and the welding gun of the welding robot 1 is adjusted, so that the welding seam has enough cooling time to form the welding slag, and the cleaning of the welding slag is more convenient.

[0031] A counterweight 7 is arranged at the lower half of the disc body 51, a steel wire brush 8 is arranged on the counterweight 7, the disc body 51 can drive the steel wire brush 8 to rotate through rotation, the steel wire brush 8 can clean the groove before welding on one hand, avoids the iron pin affecting the welding quality in the groove, on the other hand, when the disc body 51 knocks off the welding slag, the steel wire brush 8 can sweep the small welding slag which is not cleaned, can further clean the welding slag; In addition, in order to make the disc body 51 and the shaft body 53 relatively rotate, the shaft body 53 adopts the mode of instantaneous rotation, so that the arc-shaped plate 531 will hit the mounting groove 511, and long-term use will easily cause the arc-shaped plate 531 to break and fall off, therefore, the counterweight 7 is arranged in the mounting groove 511 of the lower half of the disc body 51, in use, the shaft body 53 is changed to slowly rotate, at this time, the shaft body 53 rotates under the action of the counterweight 7, so that the disc body 51 will not rotate with the shaft body 53, therefore, the relative rotation effect between the shaft body 53 and the disc body 51 can be realized.

[0032] A hydraulic cylinder welding method, comprising the following steps: S1, install the to-be-welded part on the fixing unit 2, and support the to-be-welded part through the lifting unit 3; S2, drive the to-be-welded part to rotate slowly through the fixing unit 2; S3, start the pushing piece 465, make the pushing piece 465 push the push rod 464 to move, so that the machining disc 5 is close to the to-be-welded part: S4, the blade 52 on the machining disc 5 is in contact with the to-be-welded part, and rotates uniformly with the to-be-welded part, so that the groove can be machined on the to-be-welded part.

Claims

1. A hydraulic cylinder welding device, comprising: A fixing unit (2) is provided with a welding robot (1) on one side of the fixing unit (2). The fixing unit (2) is used to install the workpiece to be welded and can drive the workpiece to be welded to rotate. The fixing unit (2) is provided with a lifting unit (3) for supporting the workpiece to be welded. The fixing unit (2) is characterized by further including a mounting frame (4) installed on the lifting unit (3) and a processing plate (5) installed on the mounting frame (4), wherein: The mounting frame (4) includes a vertical plate (41) set on the lifting unit (3). The vertical plate (41) is provided with a groove (42) for avoiding the workpiece to be welded. The vertical plate (41) is provided with a rotating shaft (461) that passes through the vertical plate (41). A swing frame (462) is provided on one side of the rotating shaft (461). The processing plate (5) is installed at the top end of the swing frame (462). An eccentric part (463) is provided at the end of the rotating shaft (461) away from the swing frame (462). A lever (464) is provided at the eccentric part (463). A pusher (465) is installed on the sliding part (44). When the pusher (465) abuts against the lever (464) and pushes the lever (464) to move, the eccentric part (463) can rotate. At the same time, the rotating shaft (461) drives the swing frame (462) to bring the processing plate (5) closer to the cylinder. The processing disc (5) is capable of rotating. A blade (52) is provided on the processing disc (5). The rotation of the processing disc (5) can drive the blade (52) to rotate.

2. The hydraulic cylinder welding equipment according to claim 1, characterized in that: The processing disc (5) includes a disc body (51) located at one end of the swing frame (462) near the top. Both sides of the disc body (51) are provided with mounting grooves (511). A sliding plate (54) is provided on the side wall of the mounting groove (511) and slides radially along the disc body (51). The blade (52) is fixedly installed on the sliding plate (54).

3. The hydraulic cylinder welding equipment according to claim 2, characterized in that: A shaft (53) is rotatably mounted at the center of the disc (51). An arc-shaped plate (531) is mounted on the shaft (53) inside the mounting groove (511). The arc-shaped plate (531) is not coaxial with the shaft (53). The end of the arc-shaped plate (531) near the shaft (53) is fixedly connected to the shaft (53). A sliding groove is provided at the end of the slide plate (54) near the shaft (53). The arc-shaped plate (531) slides inside the sliding groove. An clearance groove (512) for accommodating the arc-shaped plate (531) is also provided inside the disc (51).

4. The hydraulic cylinder welding equipment according to claim 3, characterized in that: The swing frame (462) is provided with a third drive source (6) at the lower end. The third drive source (6) drives the shaft (53) to rotate through the transmission structure. The rotating shaft (461) is located between the third drive source (6) and the disc (51) and is close to the third drive source (6).

5. The hydraulic cylinder welding equipment according to claim 1, characterized in that: An arc-shaped groove (43) is provided on the upright plate (41), and a sliding member (44) is slidably arranged inside the arc-shaped groove (43). A fan-shaped rack (445) is provided at the bottom of the sliding member (44). A worm (45) that meshes with the rack (445) is provided on the upright plate (41). A second driving source that drives the worm (45) to rotate is also provided on one side of the upright plate (41).

6. The hydraulic cylinder welding equipment according to claim 3, characterized in that: The arc plate (531) has a flat surface (532) at one end away from the shaft (53), and the flat surface (532) can be supported on the bottom of the slide plate (54).

7. The hydraulic cylinder welding equipment according to claim 2, characterized in that: Blades (52) are provided on both sides of the disc body (51) and distributed inside the mounting groove (511). The top of the blades (52) on both sides is provided with a slope. When the rotation trajectory of the top of the blades (52) on both sides coincides, the slope of the blades (52) on both sides forms a V-shape. There can be multiple blades (52) on both sides, and the blades (52) on both sides are staggered.

8. The hydraulic cylinder welding equipment according to claim 2, characterized in that: A counterweight (7) is provided in the lower semicircular area of ​​the disc (51), and a wire brush (8) is provided on the counterweight (7).

9. A hydraulic cylinder welding equipment according to claim 2, characterized in that: The edge of the disc (51) is provided with multiple notches, so that the disc (51) forms multiple impact teeth.

10. A method for welding a hydraulic cylinder, characterized in that: The hydraulic cylinder welding equipment as described in claim 1 includes the following steps: S1. Install the workpiece to be welded on the fixed unit (2) and support it through the lifting unit (3); S2. Drive the workpiece to be welded to rotate slowly through the fixed unit (2); S3. Start the pusher (465) to push the lever (464) to move, thereby moving the processing disc (5) closer to the workpiece to be welded: S4. The blade (52) on the processing disc (5) contacts the workpiece to be welded and rotates at a constant speed with the workpiece to be welded, so that a bevel can be processed on the workpiece to be welded.

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