Full-automatic laser welding clamp for hydraulic pipe fitting

Abstract

The application relates to the technical field of laser welding, in particular to a full-automatic laser welding clamp for hydraulic pipe fittings. The full-automatic laser welding clamp comprises a fixing frame, two groups of positioning mechanisms are fixedly arranged at the top of the outer wall of the fixing frame, and a driving mechanism is arranged between the two groups of positioning mechanisms; the positioning mechanism comprises a main body ring fixedly arranged on the upper portion of the outer wall of the fixing frame, a pipe fitting to be welded is slidably arranged at the inner wall of the main body ring, a plurality of clamping grooves are equidistantly formed in the outer wall of the main body ring in the circumferential direction, and clamping pieces are slidably arranged in the clamping grooves; in the using process, the driving motor is started, the plurality of clamping pieces can be synchronously pressed, the pipe fitting to be welded can be fixed in multiple directions, the fixing effect is improved, the plurality of clamping pieces can be synchronously pressed with the same force through the driving of the driving motor, the pressing force in multiple directions can be guaranteed to be the same when the pipe fitting to be welded is pressed and fixed, the pipe fitting to be welded can be prevented from deviating during the welding process, and the fixing effect of the device is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding, in particular to a full-automatic laser welding clamp for hydraulic pipe fittings. BACKGROUND

[0002] Hydraulic pipe fittings are key components in hydraulic systems for connecting, controlling, distributing and transmitting hydraulic oil. They work with hydraulic pumps, hydraulic cylinders, hydraulic valves and other components to ensure stable and efficient operation of the hydraulic system. Hydraulic pipe fittings are collectively referred to as all connecting and controlling components in the hydraulic system, including steel pipes, copper pipes and other pipes for transmitting hydraulic oil. Hydraulic pipe fittings need to be firmly welded to pipes to ensure stable operation of the hydraulic system under high pressure, high temperature and vibration environment. The necessity stems from strict requirements for sealing, pressure resistance and structural stability. Full-automatic laser welding is an automatic welding method combining laser welding technology and industrial robot technology. It uses high-energy laser beams as heat sources to precisely control the irradiation position and motion trajectory of the laser beam through industrial robots for efficient, accurate and stable welding operations.

[0003] When welding hydraulic pipe fittings, a special clamp is usually provided to position the hydraulic pipe fittings. However, in the prior art, most clamps require manual positioning and fixing of multiple clamping pieces in contact with the hydraulic pipe. This operation is cumbersome and reduces the overall welding efficiency of the hydraulic pipe fittings.

[0004] Therefore, we propose a full-automatic laser welding clamp for hydraulic pipe fittings to solve this prior art defect. SUMMARY

[0005] To achieve the above purpose, the present application provides the following technical scheme: a full-automatic laser welding clamp for hydraulic pipe fittings, comprising a fixed frame, two sets of positioning mechanisms are fixedly arranged on the top of the outer wall of the fixed frame, and a driving mechanism is arranged between the two sets of positioning mechanisms;

[0006] The positioning mechanism comprises a main body ring fixedly arranged on the upper part of the outer wall of the fixed frame, a pipe to be welded is slidably arranged in the inner wall of the main body ring, a plurality of clamping grooves are equidistantly arranged on the outer wall of the main body ring, and a clamping piece is slidably arranged in each clamping groove.

[0007] The driving mechanism comprises a driving ring sleeved on the outer wall of the pipe to be welded, connecting rods rotatably connected with the main body ring are arranged on both sides of the driving ring, and a driving piece for penetrating into the clamping groove and limiting the clamping piece is movably arranged on the connecting rod.

[0008] Further, the clamping piece comprises a trapezoidal plate slidably arranged on the inner wall of the clamping groove, blocking blocks are formed on both sides of the side wall of the trapezoidal plate, an L-shaped plate is formed on one side of the bottom of the trapezoidal plate, and a contact block is rotatably arranged on the bottom of the side wall of the outer wall of the L-shaped plate.

[0009] Further, the L-shaped plate side wall bottom is provided with a rotating hole, the contact block comprises a rotating column arranged in the rotating hole, and tapered wheels are fixedly arranged at both ends of the rotating column.

[0010] Further, a plurality of arc-shaped blocks are equidistantly arranged on one side of the outer wall of the main ring, the driving member comprises a positioning ring slidingly arranged at the outer wall of the arc-shaped block, a adjusting ring is rotationally arranged on the outer wall of the positioning ring and close to one side of the clamping groove, a plurality of pressing columns are equidistantly arranged on the side wall of the adjusting ring, and the pressing columns slidingly contact the upper surface of the trapezoidal plate.

[0011] Further, a combination ring is detachably arranged at one end of the outer wall of the arc-shaped block away from the main ring, and the outer diameter of the combination ring is greater than the inner diameter of the positioning ring.

[0012] Further, the driving ring comprises two first housings and second housings oppositely arranged at the outer wall of the pipe to be welded, the first housings and the second housings are provided with a first annular groove at opposite sides, a plurality of communication holes are equidistantly arranged at the inner wall of the first annular groove, one end of the connecting rod is rotationally connected with the communication hole, the connecting rod is threadedly connected with the positioning ring, and a first transmission gear is fixedly arranged at one end of the connecting rod close to the communication hole.

[0013] Further, a gear ring is rotationally arranged between the first housing and the second housing, an inner tooth surface is formed at the inner wall of the gear ring, the inner tooth surface is meshingly connected with the first transmission gear, an outer tooth surface is formed at the outer wall of the gear ring and communicates with the outside, a driving motor is arranged at the outer wall bottom of the fixed frame, a driving column is fixedly connected with the driving end of the driving motor, and a second transmission gear meshingly connected with the outer tooth surface is fixedly arranged at the outer wall of the driving column.

[0014] Further, a threaded rod is formed at one end of the driving column away from the driving motor, a bending plate is threadedly arranged at the outer wall of the threaded rod, and a cleaning ring is arranged at the interface of the pipe to be welded and sleeved on the outer wall top of the bending plate.

[0015] Further, a second annular groove is arranged at the outer wall of the cleaning ring and close to one side of the welding interface of the pipe to be welded, and a cleaning block for cleaning the welding interface of the pipe to be welded is rotationally connected in the second annular groove.

[0016] Further, a sliding cavity is arranged at the outer wall of the cleaning block and close to the opening of the second annular groove, a guide column is arranged at the inner wall of the sliding cavity along the height direction, a convex plate is slidingly arranged at the outer wall of the guide column, a concave groove is arranged at the outer wall bottom of the convex plate, a cleaning sponge is arranged in the concave groove, and a pressing spring is arranged at the outer wall of the guide column and located at the top of the convex plate. Advantages

[0017] Compared with the prior art, the hydraulic pipe full-automatic laser welding clamp provided by the present application has the following advantages:

[0018] 1、Compared with the prior art, the present application can realize multi-directional fixation of the to-be-welded pipe by starting the driving motor to press the plurality of clamping pieces synchronously during use, thereby improving the fixation effect, and at the same time, since the driving motor is used to drive the plurality of clamping pieces to be pressed with the same force synchronously, the multi-directional pressing force can be ensured to be the same when the to-be-welded pipe is pressed and fixed, the to-be-welded pipe can be prevented from deviating during the welding process, and the fixation effect of the device is further improved.

[0019] 2、The present application can improve the stability of the device by rotating the cleaning block to clean the welding joint of the to-be-welded pipe multiple times, and in addition, starting the driving motor can not only clamp and fix the to-be-welded pipe, but also change the position of the cleaning ring to avoid affecting the subsequent laser welding. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A hydraulic pipe full-automatic laser welding clamp overall schematic diagram is proposed for the present application;

[0021] Figure 2 A hydraulic pipe full-automatic laser welding clamp overall side sectional view schematic diagram is proposed for the present application;

[0022] Figure 3 A hydraulic pipe full-automatic laser welding clamp main ring and driving ring position schematic diagram is proposed for the present application;

[0023] Figure 4 A hydraulic pipe full-automatic laser welding clamp driving ring, connecting rod and driving piece position schematic diagram is proposed for the present application;

[0024] Figure 5 A hydraulic pipe full-automatic laser welding clamp driving piece split schematic diagram is proposed for the present application;

[0025] Figure 6 A hydraulic pipe full-automatic laser welding clamp main ring side sectional view schematic diagram is proposed for the present application;

[0026] Figure 7 A hydraulic pipe full-automatic laser welding clamp clamping piece and contact block position schematic diagram is proposed for the present application;

[0027] Figure 8 A hydraulic pipe full-automatic laser welding clamp driving ring split schematic diagram is proposed for the present application;

[0028] Figure 9A hydraulic pipe full-automatic laser welding fixture drive motor and drive column schematic diagram is proposed in the present application;

[0029] Figure 10 A hydraulic pipe full-automatic laser welding fixture bending plate and cleaning ring schematic diagram is proposed in the present application;

[0030] Figure 11 A hydraulic pipe full-automatic laser welding fixture cleaning ring side view schematic diagram is proposed in the present application;

[0031] Figure 12 A hydraulic pipe full-automatic laser welding fixture is proposed in the present application Figure 11 The enlarged structure schematic diagram at A in the figure.

[0032] In the figure: 100, fixed frame; 120, pipe to be welded; 130, drive motor; 140, drive column; 141, second transmission gear; 142, threaded rod; 200, positioning mechanism; 210, main body ring; 211, clamping groove; 212, trapezoidal plate; 213, blocking block; 214, L-shaped plate; 215, contact block; 220, clamping piece; 216, rotating hole; 217, rotating column; 218, conical wheel; 219, arc block; 300, drive mechanism; 310, drive ring; 311, first housing; 312, second housing; 313, first annular groove; 314, communication hole; 315, first transmission gear; 320, connecting rod; 330, drive piece; 331, positioning ring; 332, adjusting ring; 333, pressing column; 340, combined ring; 350, toothed ring; 351, inner tooth surface; 352, outer tooth surface; 410, bending plate; 420, cleaning ring; 421, second annular groove; 422, cleaning block; 423, sliding cavity; 424, guide column; 425, convex plate; 426, concave groove; 427, cleaning sponge; 428, abutting spring. DETAILED DESCRIPTION

[0033] 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, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Please refer to Figures 1 to 7 A hydraulic pipe full-automatic laser welding fixture, comprising a fixed frame 100, two sets of positioning mechanisms 200 are fixedly arranged on the top of the outer wall of the fixed frame 100, and a drive mechanism 300 is arranged between the two sets of positioning mechanisms 200;

[0035] The positioning mechanism 200 comprises a main body ring 210 fixed on the outer wall of the fixed frame 100, the inner wall of the main body ring 210 is slidably provided with the pipe to be welded 120, a plurality of clamping grooves 211 are equidistantly formed on the outer wall of the main body ring 210, the number of the clamping grooves 211 is six to eight, which can ensure the multi-directional positioning of the pipe to be welded 120, and can avoid the installation complexity caused by too many clamping pieces 220, and the clamping grooves 211 are slidably provided with the clamping pieces 220.

[0036] The driving mechanism 300 comprises a driving ring 310 sleeved on the outer wall of the pipe to be welded 120, the two sides of the driving ring 310 are provided with connecting rods 320 rotationally connected with the main body ring 210, the outer wall of the connecting rod 320 is threaded, so that the driving piece 330 can move by rotating with the connecting rod 320, and the connecting rod 320 is movably provided with the driving piece 330 for deepening into the clamping groove 211 and limiting the clamping piece 220.

[0037] Please refer to Figures 6 to 9 The clamping piece 220 comprises a trapezoidal plate 212 slidably arranged on the inner wall of the clamping groove 211, the upper surface of the trapezoidal plate 212 has a certain inclination angle, and the end of the pressing column 333 also has a complementary inclined surface to the trapezoidal plate 212, so that the trapezoidal plate 212 is more smooth when being pressed downward by the trapezoidal plate 212, the side walls of the trapezoidal plate 212 are provided with blocking blocks 213 on both sides, the blocking blocks 213 are located on both sides of the clamping groove 211, so that the trapezoidal plate 212 can only slide in the height direction in the clamping groove 211, and the trapezoidal plate 212 is prevented from sliding out of the clamping groove 211, the bottom side of the trapezoidal plate 212 is provided with an L-shaped plate 214, the outer wall side wall of the L-shaped plate 214 is rotationally provided with a contact block 215, the bottom side of the L-shaped plate 214 is provided with a rotating hole 216, the contact block 215 comprises a rotating column 217 arranged in the rotating hole 216, tapered wheels 218 are fixedly arranged at both ends of the rotating column 217, the tapered wheels 218 extend to both sides with the rotating column 217 as the midpoint, and the thickness gradually increases, and the contact area is further improved when contacting the pipe to be welded 120.

[0038] Please refer to Figures 4 to 12The outer wall of the main ring 210 is provided with a plurality of arc blocks 219 equidistantly on one side, the driving member 330 comprises a positioning ring 331 slidingly arranged on the outer wall of the arc block 219, the outer wall of the positioning ring 331 is rotatably provided with an adjusting ring 332 close to one side of the clamping groove 211, the side wall of the adjusting ring 332 is provided with a plurality of pressing columns 333 equidistantly, and the pressing columns 333 are in sliding contact with the upper surface of the trapezoidal plate 212; the outer wall of the arc block 219 is detachably provided with a combination ring 340 at the end away from the main ring 210, the outer diameter of the combination ring 340 is greater than the inner diameter of the positioning ring 331, the outer diameter of the combination ring 340 does not contact the connecting rod 320, so as to avoid interference with the operation of the connecting rod 320, and the combination ring 340 can also limit the positioning ring 331 to the inside of the arc block 219, so that the main ring 210 and the driving member 330 can be directly disassembled synchronously during subsequent disassembly and maintenance, and the disassembly efficiency is improved.

[0039] Please refer to Figures 4 to 12 The driving ring 310 comprises two first housings 311 and second housings 312 oppositely arranged at the outer wall of the pipe to be welded 120, the first housing 311 and the second housing 312 are detachably fixed by bolts, so as to facilitate subsequent maintenance, the first housing 311 and the second housing 312 are provided with a first annular groove 313 on the opposite sides, a plurality of communication holes 314 are equidistantly arranged on the inner wall of the first annular groove 313, one end of the connecting rod 320 is rotatably connected with the communication hole 314, and the connecting rod 320 is threadedly connected with the positioning ring 331, and the end of the connecting rod 320 close to the communication hole 314 is fixedly provided with a first transmission gear 315; the first housing 311 and the second housing 312 are rotatably provided with a gear ring 350, the inner wall of the gear ring 350 is formed with an inner tooth surface 351, the inner tooth surface 351 is meshingly connected with the first transmission gear 315, the outer wall of the gear ring 350 is formed with an outer tooth surface 352 in communication with the outside, the fixed frame 100 is provided with a driving motor 130 at the bottom of the outer wall, the driving motor 130 is fixedly connected with a driving column 140 at the driving end, and the outer wall of the driving column 140 is fixedly provided with a second transmission gear 141 meshing with the outer tooth surface 352.

[0040] Please refer to Figures 4 to 12, a gear ring 350 is rotationally arranged between the first shell 311 and the second shell 312, an inner tooth surface 351 is formed at an inner wall of the gear ring 350, the inner tooth surface 351 is in meshing connection with the first transmission gear 315, an outer tooth surface 352 in communication with the outside is formed at an outer wall of the gear ring 350, a fixed frame 100 is provided with a driving motor 130 at a bottom of an outer wall thereof, a driving column 140 is fixedly connected with a driving end of the driving motor 130, a second transmission gear 141 in meshing connection with the outer tooth surface 352 is fixedly arranged at an outer wall of the driving column 140; a second annular groove 421 is formed at an outer wall of the cleaning ring 420, close to a side of the welding interface of the pipe piece 120 to be welded, a cleaning block 422 for cleaning the welding interface of the pipe piece 120 to be welded is rotationally arranged in the second annular groove 421; a sliding cavity 423 is formed at an outer wall of the cleaning block 422, close to an opening side of the second annular groove 421, a guide column 424 is arranged at an inner wall of the sliding cavity 423 along a height direction, a convex plate 425 is slidingly arranged at an outer wall of the guide column 424, a concave groove 426 is formed at a bottom of an outer wall of the convex plate 425, a cleaning sponge 427 is arranged in the concave groove 426, a pressing spring 428 is arranged at an outer wall of the guide column 424, located at a top of the convex plate 425, the cleaning sponge 427 is directly inserted into the concave groove 426 by self-deformation, and the cleaning sponge 427 can be directly pulled out for cleaning.

[0041] Working principle and use steps: when the to-be-welded pipe 120 needs to be welded, the to-be-welded pipe 120 is placed on the fixing frame 100 and is sleeved at the inner wall of the main ring 210, the driving motor 130 is started, the driving motor 130 drives the driving column 140 to rotate, thereby driving the second transmission gear 141 to rotate, the second transmission gear 141 is engaged with the outer tooth surface 352 on the surface of the gear ring 350, thereby driving the gear ring 350 to rotate in the first annular groove 313 in the first shell 311 and the second shell 312, so that the inner tooth surface 351 is engaged with the first transmission gear 315 to drive the connecting rod 320 to rotate, the positioning ring 331 on the connecting rod 320 moves towards the main ring 210, thereby driving the adjusting ring 332 and the pressing column 333 to move into the clamping groove 211, and the trapezoidal plate 212 located in the clamping groove 211 is extruded, so that the L-shaped plate 214 moves towards the to-be-welded pipe 120, and the taper wheel 218 fixedly connected on the rotating column 217 is in close contact with the surface of the pipe, thereby realizing the multi-directional quick fixing of the to-be-welded pipe 120. Compared with the prior art, the driving motor 130 is started during use, so that the plurality of clamping pieces 220 are synchronously pressed, thereby realizing the multi-directional fixing of the to-be-welded pipe 120, improving the fixing effect, and at the same time, the driving motor 130 is driven to synchronously press the plurality of clamping pieces 220 with the same force, so that the multi-directional pressing force is the same when the to-be-welded pipe 120 is pressed and fixed, the to-be-welded pipe 120 can be prevented from deviating during the welding process, the fixing effect of the device is further improved, in addition, the two groups of positioning mechanisms 200 are arranged at both ends of the outer wall of the to-be-welded pipe 120, the to-be-welded pipe 120 can be clamped more stably, and the two groups of positioning mechanisms 200 can limit the overall orientation of the to-be-welded pipe 120, so that the to-be-welded pipe 120 can be prevented from deviating as a whole during the welding process.

[0042] Considering that when the to-be-welded pipe fittings 120 are welded, the welding interface parts of the to-be-welded pipe fittings 120 can be contaminated by dust and debris and other impurities, which can affect the welding quality between the to-be-welded pipe fittings 120, therefore, before the to-be-welded pipe fittings 120 are placed on the fixing frame 100 for fixation, the cleaning block 422 sliding in the second annular groove 421 on the cleaning ring 420 is manually rotated by hand to rotate around the interface of the to-be-welded pipe fittings 120, during which the abutting spring 428 at the outer wall of the guide column 424 pushes the convex plate 425, so that the cleaning sponge 427 in the concave groove 426 abuts against the surface of the to-be-welded pipe fittings 120 to quickly clean the welding interface of the to-be-welded pipe fittings 120, when the to-be-welded pipe fittings 120 need to be positioned after cleaning, the driving motor 130 is started to position the to-be-welded pipe fittings 120, at the same time, the bent plate 410 moves to both sides of the welding interface of the to-be-welded pipe fittings 120 through the threaded rod 142, so as to expose the welding position of the welding interface, which is convenient for subsequent welding by laser, the to-be-welded pipe fittings 120 can be cleaned multiple times by rotating the cleaning block 422, which improves the stability of the device, in addition, the driving motor 130 can not only clamp and fix the to-be-welded pipe fittings 120, but also change the position of the cleaning ring 420, which avoids affecting the subsequent laser welding.

[0043] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic pipe full-automatic laser welding clamp, comprising a fixed frame, two sets of positioning mechanisms are fixedly arranged on the top of the outer wall of the fixed frame, and a driving mechanism is arranged between the two sets of positioning mechanisms; The positioning mechanism comprises a main body ring fixedly arranged on the upper part of the outer wall of the fixed frame, a pipe to be welded is slidably arranged on the inner wall of the main body ring, a plurality of clamping grooves are equidistantly formed on the outer wall of the main body ring, and a clamping piece is slidably arranged in the clamping groove; The driving mechanism comprises a driving ring sleeved on the outer wall of the pipe to be welded, connecting rods rotatably connected with the main body ring are arranged on the two sides of the driving ring, and a driving piece for penetrating into the clamping groove and limiting the clamping piece is movably arranged on the connecting rod; The clamping piece comprises a trapezoidal plate slidably arranged on the inner wall of the clamping groove, blocking blocks are formed on the two sides of the side wall of the trapezoidal plate, an L-shaped plate is formed on one side of the bottom of the trapezoidal plate, and a contact block is rotatably arranged on the bottom of the side wall of the L-shaped plate; The bottom of the side wall of the L-shaped plate is provided with a rotating hole, the contact block comprises a rotating column arranged in the rotating hole, and tapered wheels are fixedly arranged on the two ends of the rotating column; A plurality of arc-shaped blocks are equidistantly arranged on one side of the outer wall of the main body ring, the driving piece comprises a positioning ring slidably arranged on the outer wall of the arc-shaped block, an adjusting ring is rotatably arranged on one side of the outer wall of the positioning ring close to the clamping groove, a plurality of pressing columns are equidistantly arranged on the side wall of the adjusting ring, and the pressing columns are in sliding contact with the upper surface of the trapezoidal plate; A combined ring is detachably arranged on the end of the outer wall of the arc-shaped block away from the main body ring, and the outer diameter of the combined ring is greater than the inner diameter of the positioning ring; The driving ring comprises two first housings and a second housing oppositely arranged on the outer wall of the pipe to be welded, a first annular groove is formed on the opposite sides of the first housing and the second housing, a plurality of communication holes are equidistantly arranged on the inner wall of the first annular groove, one end of the connecting rod is rotatably connected with the communication hole, the connecting rod is threadedly connected with the positioning ring, and a first transmission gear is fixedly arranged on the end of the connecting rod close to the communication hole; A gear ring is rotatably arranged between the first housing and the second housing, an inner tooth surface is formed on the inner wall of the gear ring, the inner tooth surface is in meshing connection with the first transmission gear, an outer tooth surface in communication with the outside is formed on the outer wall of the gear ring, a driving motor is arranged on the bottom of the outer wall of the fixed frame, a driving column is fixedly connected with the driving end of the driving motor, and a second transmission gear in meshing connection with the outer tooth surface is fixedly arranged on the outer wall of the driving column; A threaded rod is formed on the end of the driving column away from the driving motor, a bent plate is threadedly arranged on the outer wall of the threaded rod, and a cleaning ring is sleeved on the interface of the pipe to be welded on the top of the outer wall of the bent plate.

2. The full-automatic laser welding fixture for hydraulic pipe according to claim 1, characterized in that: A second annular groove is formed on one side of the outer wall of the cleaning ring close to the welding interface of the pipe to be welded, and a cleaning block for cleaning the welding interface of the pipe to be welded is rotatably connected in the second annular groove.

3. The full-automatic laser welding fixture for hydraulic pipe according to claim 2, characterized in that: A sliding cavity is formed on one side of the outer wall of the cleaning block close to the opening of the second annular groove, a guide column is arranged on the inner wall of the sliding cavity along the height direction, a convex plate is slidably arranged on the outer wall of the guide column, a concave groove is formed on the bottom of the outer wall of the convex plate, a cleaning sponge is arranged in the concave groove, and a pressing spring is arranged on the top of the convex plate on the outer wall of the guide column.

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