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CN-121972887-A - Double-station welding device for hydraulic cylinder jack joint

CN121972887ACN 121972887 ACN121972887 ACN 121972887ACN-121972887-A

Abstract

The invention discloses a double-station welding device for a jack connector of a hydraulic cylinder, which relates to the technical field of jack connector welding and comprises a welding mechanical arm, a positioning mechanism, a placing frame and a positioning frame, wherein two welding stations are arranged on two sides of the welding mechanical arm and used for synchronously carrying out welding and clamping preparation, the positioning mechanism is arranged on the welding stations and used for clamping and positioning the jack connector, the placing frame is fixed on the welding stations and is integrally V-shaped, and the positioning mechanism has the beneficial effects that after the placing frame is arranged in the V shape, a cylinder barrel can be initially positioned, and a sliding arc plate and a pressing rod which are in driving connection are arranged on the top of the placing frame, and when the cylinder barrel contacts the pressing rod and presses the pressing rod downwards by utilizing self gravity, the pressing rod can drive the sliding arc plate to fix the cylinder barrel, so that the positioning mechanism can automatically fix the cylinder barrel, and can prevent the situation of dislocation of a welding seam or virtual welding caused by the deviation of the cylinder barrel.

Inventors

  • YE HONGBIN
  • CUI CHAOJUN
  • YE QIHANG
  • CHEN HAOYU
  • YANG ZHEN

Assignees

  • 河南德佰特机电设备制造有限公司

Dates

Publication Date
20260505
Application Date
20260205

Claims (9)

  1. 1. Double-station welding device for hydraulic cylinder jack joints is characterized by comprising: the welding mechanical arm (1) is provided with welding stations (2) on two sides, and the two welding stations (2) are used for synchronously carrying out welding and clamping preparation; the positioning mechanism (3) is arranged on the welding station (2) and is used for clamping and positioning the jack connector; The rack (4) is fixed on the welding station (2), the whole rack is V-shaped, two inclined planes at the top of the rack symmetrically slide with sliding arc plates (41), a pressing rod (42) slides in the middle of the top of the rack, the pressing rod (42) is in driving connection with the sliding arc plates (41), and the pressing rod (42) is used for driving the sliding arc plates (41) to fix the cylinder barrel.
  2. 2. The hydraulic ram jack joint double-station welding apparatus of claim 1, further comprising: the bracket (21) is provided with two brackets which are respectively positioned at two sides of the welding mechanical arm (1), the top of the bracket is fixedly provided with a supporting plate (22), and the placing frame (4) is provided with a plurality of brackets which are respectively fixed at the top of the supporting plate (22).
  3. 3. The hydraulic ram jack joint double-station welding apparatus of claim 2, further comprising: the extension plate (31) is fixed at one end of the bracket (21) close to the welding mechanical arm (1), a lifting threaded rod (32) is installed on the extension plate in a penetrating threaded manner, and the top end of the lifting threaded rod (32) is rotatably installed at the bottom of the bottom plate (33); the first driving cylinder (34) is fixed at the top of the bottom plate (33), the telescopic end of the first driving cylinder is fixed with a joint positioning plate (35), and the top of the joint positioning plate (35) is provided with a second driving cylinder (36) and a clamp (37) which are connected.
  4. 4. The hydraulic ram jack joint double-station welding apparatus of claim 2, further comprising: The limiting pipe (5) is fixed at the top of one end, close to the welding mechanical arm (1), of the bracket (21), the top of the limiting pipe is fixedly provided with an adjusting plate (51), the top of the limiting pipe is provided with a plurality of equally-spaced screw holes, the adjusting plate (51) is penetrated with a plurality of penetrating holes matched with the screw holes, a screw rod is penetrated and arranged in the penetrating holes, the bottom thread of the screw rod is arranged in the screw holes, and the diameter of the head of the screw rod is larger than the width of the penetrating holes; And the limiting plate (52) is fixed at one end of the adjusting plate (51) close to the bracket (21), and a reinforcing rib (53) is arranged between the side edge of the limiting plate and the top of the adjusting plate (51).
  5. 5. The hydraulic ram jack joint double-station welding apparatus of claim 1, further comprising: The arc-shaped cavity (411) is provided with two inclined planes which are symmetrically arranged on the top of the placing rack (4), the two sliding arc plates (41) respectively slide in the two arc-shaped cavities (411) in a sealing way, and a tension spring II (412) is arranged between the bottom ends of the sliding arc plates (41) and the bottom ends of the arc-shaped cavities (411); The hinge plate (413) is hinged to the top end of the sliding arc plate (41), and an inward sinking groove (414) matched with the hinge plate (413) is formed in the top inclined plane of the placing frame (4).
  6. 6. The hydraulic ram jack joint double-station welding apparatus of claim 5, further comprising: the middle cavity (421) is arranged in the middle of the top of the placing frame (4), the bottom of the middle cavity is communicated with the bottom of the arc-shaped cavity (411) through a vent hole (422), the top of the middle cavity is welded with the matching plate (43), and the top inclined plane of the matching plate (43) is matched with the top inclined plane of the placing frame (4); The piston plate I (423) is hermetically and slidably arranged in the middle cavity (421), the top of the piston plate I is fixed with the bottom of the compression rod (42), the bottom of the matching plate (43) is provided with a tension spring cavity (424), and a tension spring I (425) is arranged between the top end of the tension spring cavity (424) and the top end of the piston plate I (423); And a through hole 426 penetrating through the middle of the matching plate 43, the compression bar 42 penetrating through the through hole, the diameter of the through hole being larger than that of the compression bar 42, and a ball being provided at the top end of the compression bar 42.
  7. 7. The hydraulic ram jack joint double-station welding apparatus of claim 6, further comprising: And the air release hole (44) penetrates through the bottom end of the side edge of the middle cavity (421), and the sealing screw thread at the outer end of the air release hole is provided with a sealing screw rod (441).
  8. 8. The hydraulic ram jack joint double-station welding apparatus of claim 6, further comprising: and the inward sinking cavity (431) is symmetrically arranged on two inclined planes at the top of the matching plate (43), the inside of the inward sinking cavity is hermetically and slidably provided with a propping plate (432), and the top end of the propping plate (432) is also provided with a ball.
  9. 9. The hydraulic ram jack joint double-station welding apparatus of claim 8, further comprising: The adjusting cavity (45) is arranged in the rack (4), and two ends of the adjusting cavity are respectively communicated with the position, close to the lower end, of the arc-shaped cavity (411) and the inner end of the invagination cavity (431) through a first through hole (451) and a second through hole (452); and the adjusting oil cylinder (453) is fixed on the side edge of the placing frame (4), the telescopic end of the adjusting oil cylinder stretches into the adjusting cavity (45) and is fixedly provided with a second piston plate (454), and the second piston plate (454) is hermetically slid in the adjusting cavity (45).

Description

Double-station welding device for hydraulic cylinder jack joint Technical Field The invention relates to the technical field of jack joint welding, in particular to a double-station welding device for a hydraulic cylinder jack joint. Background The hydraulic cylinder is used as a key executive component in hydraulic equipment such as a jack, the manufacturing quality of the hydraulic cylinder directly influences the performance and the reliability of the whole machine, an oil inlet and outlet joint is welded at the end part of a cylinder body of the hydraulic cylinder in the assembly process of the hydraulic cylinder so as to realize the connection of a hydraulic pipeline, the welding process has high requirements on precision, and if the relative position between the joint and the cylinder body deviates, the sealing performance is influenced, and the leakage, the pressure loss and even the failure of a hydraulic system are possibly caused. Currently, in the welding process of hydraulic cylinder jack joints, a manual or semi-automatic mode is generally adopted to place a cylinder body at a welding station, and then an operator starts welding equipment to finish welding operation, however, the following obvious defects exist in the prior art: 1. The fixation is unreliable, namely, in the welding process, the cylinder body which is not fully restrained can generate tiny displacement due to the influence of thermal stress or mechanical vibration, so that the welding seam is misplaced or cold joint is caused; 2. The automatic degree is insufficient, the existing device depends on manual intervention, the efficiency is low, the skill requirement on operators is high, and the requirements of mass and high-beat production are difficult to meet; 3. The traditional welding device is of a single-station structure, a continuous operation mode of 'one-station welding and the clamping of the other station' cannot be realized, and the overall production efficiency is restricted. Therefore, it is necessary to invent a hydraulic cylinder jack joint double-station welding device to solve the above problems. Disclosure of Invention The invention aims to provide a double-station welding device for a hydraulic cylinder jack joint, which aims to solve the problems in the background technology. The double-station welding device for the hydraulic cylinder jack joint comprises a welding mechanical arm, a positioning mechanism, a placing frame and a clamping mechanism, wherein the welding mechanical arm is provided with welding stations on two sides of the welding mechanical arm, the two welding stations are used for synchronously carrying out welding and clamping preparation, the positioning mechanism is arranged on the welding stations and used for clamping and positioning the jack joint, the placing frame is fixed on the welding stations and is integrally V-shaped, sliding arc plates symmetrically slide on two inclined planes of the top of the placing frame, a pressing rod is arranged in a sliding mode in the middle of the top of the placing frame, and the pressing rod is in driving connection with the sliding arc plates and used for driving the sliding arc plates to fix a cylinder barrel. Preferably, the welding machine further comprises a support, two supports are arranged on the two sides of the welding machine arm respectively, the top of each support is fixedly provided with a supporting plate, and the placing frames are provided with a plurality of tops which are both fixedly arranged on the supporting plates. The welding machine comprises a welding mechanical arm, a first base plate, a second base plate, a first driving cylinder, a second driving cylinder, a first extending plate, a second extending plate, a first connecting plate, a second connecting plate and a third connecting plate. Preferably, the welding machine further comprises a limiting pipe, wherein the limiting pipe is fixed at the top of one end, close to the welding mechanical arm, of the support, an adjusting plate is fixed at the top of the limiting pipe, a plurality of equally-spaced screw holes are formed in the top of the limiting pipe, a plurality of through holes matched with the screw holes are formed in the adjusting plate in a penetrating mode, a screw rod is arranged in the through holes in a penetrating mode, threads at the bottom end of the screw rod are installed in the screw holes, the diameter of the head of the screw rod is larger than the width of the through holes, and a reinforcing rib is arranged between the side edge of the limiting plate and the top of the adjusting plate. Preferably, the rack further comprises an arc-shaped cavity, hinge plates and an inward sinking groove, wherein the arc-shaped cavity is provided with two inclined planes which are symmetrically arranged on the top of the rack, the two sliding arc plates respectively slide in the two arc-shaped cavities in a sealing mode, a tension spring II is arranged between the b