Special laser welding wire pushing and drawing mechanism for manipulator

Abstract

The utility model discloses a special laser welding wire pushing and drawing mechanism for a manipulator, which comprises a mounting seat, a stepping motor is fixedly mounted at the bottom of the mounting seat, an output shaft of the stepping motor penetrates through the mounting seat and is provided with a transmission wheel, a wire feeding wheel is fixedly mounted at the top of the transmission wheel, a movable pressing wheel is mounted in the mounting seat, and a wire pushing and drawing mechanism is mounted in the movable pressing wheel. A bearing is installed on the movable pressing wheel, and the movable pressing wheel is in threaded connection with a locking screw. According to the utility model, the small-sized wire feeding mechanism is additionally arranged in the tail end area of the wire outlet of the original laser welding, and is matched with the original wire feeding machine, so that the double wire feeding mechanisms are matched in speed and length and operate synchronously, the double wire feeding mechanisms increase the wire feeding torque, and the small-sized wire feeding machine is relatively close to the wire outlet, so that the wire feeding torque is greatly increased even if a robot moves greatly. The welding wire is not affected by the telescopic gap, the situation that the welding wire is long or short due to large-amplitude movement is avoided, the wire feeding precision is improved, and meanwhile the welding quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to manipulator technical field more specifically, relate to the laser welding push and pull wire mechanism special for manipulator. BACKGROUND

[0002] In current industrial production, robot laser welding technology has been widely used. The traditional robot laser welding usually adopts a wire feeder to drive the welding wire, and the wire feeder is placed on the 3-axis of the robot.

[0003] However, this way has some deficiencies in some complex scenarios, because the distance of the wire feeder is relatively far, and the robot has a large movement range, swinging the wire feeder pipe will cause the welding wire inside the wire feeder pipe to have an expansion gap due to the gap problem of the wire feeder pipe, and the welding wire will be short or long. The unstable length of the welding wire directly affects the forming effect of the laser welding bead. UTILITARIAN CONTENT

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a laser welding push and pull wire mechanism special for manipulator to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The laser welding push and pull wire mechanism special for manipulator comprises a mounting seat, a stepping motor is fixedly installed at the bottom of the mounting seat, the output shaft of the stepping motor penetrates the mounting seat and is provided with a transmission wheel, a wire feeder wheel is fixedly installed at the top of the transmission wheel, a movable pressure roller is installed in the mounting seat, a bearing is installed on the movable pressure roller, a locking screw is threadedly connected to the movable pressure roller, the bearing is fixed to the movable pressure roller through the locking screw, a top cover is fixedly installed on the mounting seat through bolts, two spring jacks are threadedly connected to the mounting seat, one end of the two spring jacks inside the mounting seat is in contact with the movable pressure roller, wire holes are formed in the front and back of the mounting seat, and the two wire holes are located between the wire feeder wheel and the bearing.

[0007] As a further description of the above technical scheme:

[0008] The movable pressure roller comprises a fixed screw threadedly connected to the inside of the mounting seat, a pressure roller seat is rotatably connected to the fixed screw, the bearing is installed on the pressure roller seat, and one end of the spring jack inside the mounting seat is in contact with the side of the pressure roller seat away from the fixed screw.

[0009] As a further description of the above technical scheme:

[0010] The top of the wire feeder wheel is smoothly contacted with a fixed sheet, and the fixed sheet is fixedly installed at the bottom of the top cover.

[0011] As a further description of the above technical solutions:

[0012] The output shaft of the stepper motor is embedded with a positioning pin, and the inner side of the transmission wheel is provided with a strip-shaped groove matched with the positioning pin.

[0013] As a further description of the above technical solutions:

[0014] The wire feeding wheel is provided with a wire bundling groove, and the bearing is located at the same height as the wire feeding wheel.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The scheme increases a small wire feeding mechanism at the end area of the original laser welding wire outlet, cooperates with the original wire feeding machine, and matches the speed and length of the double wire feeding mechanisms, so that the double wire feeding mechanisms run synchronously. The double wire feeding mechanisms not only increase the wire feeding torque, but also improve the wire feeding precision and welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic diagram of the utility model;

[0018] Fig. 2 It is a split structural schematic diagram of the utility model;

[0019] Fig. 3 It is a structural schematic diagram of the movable pressure wheel of the utility model.

[0020] Explanation of reference numerals in the drawing:

[0021] 1, mounting seat; 2, stepper motor; 21, positioning pin; 3, transmission wheel; 4, wire feeding wheel; 5, fixed sheet; 6, movable pressure wheel; 61, fixed screw; 62, pressure wheel seat; 7, bearing; 8, locking screw; 9, top cover; 10, spring jack; 11, wire hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model;

[0023] Please refer to Figs. 1-3The utility model discloses a special laser welding push and pull wire mechanism of manipulator, including the mounting seat 1, the bottom fixed mounting of mounting seat 1 has the step motor 2, the output shaft of step motor 2 penetrates mounting seat 1 and is installed with transmission wheel 3, the top fixed mounting of transmission wheel 3 has the wire feeding wheel 4, the inside installation of mounting seat 1 has the movable pressure roller 6, and the bearing 7 is installed on movable pressure roller 6, and the lock screw 8 is threadedly connected on movable pressure roller 6, and the bearing 7 is fixed on movable pressure roller 6 through lock screw 8, and the top cover 9 is fixedly installed on mounting seat 1 through the bolt, and two spring top wires 10 are threadedly connected on mounting seat 1, and the one end of two spring top wires 10 inside mounting seat 1 is in contact with movable pressure roller 6, and the front and back of mounting seat 1 are all provided with the wire hole 11, and two wire holes 11 are all located between wire feeding wheel 4 and bearing 7.

[0024] The utility model discloses a special laser welding push and pull wire mechanism of manipulator, including the mounting seat 1, the bottom fixed mounting of mounting seat 1 has the step motor 2, the output shaft of step motor 2 penetrates mounting seat 1 and is installed with transmission wheel 3, the top fixed mounting of transmission wheel 3 has the wire feeding wheel 4, the inside installation of mounting seat 1 has the movable pressure roller 6, and the bearing 7 is installed on movable pressure roller 6, and the lock screw 8 is threadedly connected on movable pressure roller 6, and the bearing 7 is fixed on movable pressure roller 6 through lock screw 8, and the top cover 9 is fixedly installed on mounting seat 1 through the bolt, and two spring top wires 10 are threadedly connected on mounting seat 1, and the one end of two spring top wires 10 inside mounting seat 1 is in contact with movable pressure roller 6, and the front and back of mounting seat 1 are all provided with the wire hole 11, and two wire holes 11 are all located between wire feeding wheel 4 and bearing 7.

[0025] Please refer to Fig. 2 With Fig. 3 Wherein: the movable pressure roller 6 includes the fixed screw 61 threadedly connected in the inside of the mounting seat 1, the pressure roller seat 62 is rotatably connected on the fixed screw 61, the bearing 7 is installed on the pressure roller seat 62, and the one end of the spring top wire 10 inside the mounting seat 1 is in contact with the side of the pressure roller seat 62 away from the fixed screw 61.

[0026] The utility model discloses a special laser welding push and pull wire mechanism of manipulator, including the mounting seat 1, the bottom fixed mounting of mounting seat 1 has the step motor 2, the output shaft of step motor 2 penetrates mounting seat 1 and is installed with transmission wheel 3, the top fixed mounting of transmission wheel 3 has the wire feeding wheel 4, the inside installation of mounting seat 1 has the movable pressure roller 6, and the bearing 7 is installed on movable pressure roller 6, and the lock screw 8 is threadedly connected on movable pressure roller 6, and the bearing 7 is fixed on movable pressure roller 6 through lock screw 8, and the top cover 9 is fixedly installed on mounting seat 1 through the bolt, and two spring top wires 10 are threadedly connected on mounting seat 1, and the one end of two spring top wires 10 inside mounting seat 1 is in contact with movable pressure roller 6, and the front and back of mounting seat 1 are all provided with the wire hole 11, and two wire holes 11 are all located between wire feeding wheel 4 and bearing 7.

[0027] Please refer to Fig. 2 With Fig. 3 Wherein: the top of the wire feeding wheel 4 is smoothly contacted with the fixed sheet 5, and the fixed sheet 5 is fixedly installed on the bottom of the top cover 9.

[0028] The utility model discloses, through the restriction of fixed sheet 5 to wire feeding wheel 4, can prevent wire feeding wheel 4 up and down swing, keep wire feeding wheel 4's stability, avoid transmission wheel 3 and stepping motor 2 output shaft disengagement simultaneously, determine transmission power.

[0029] Please refer to Fig. 2 Among them: the output shaft of stepping motor 2 is embedded with positioning pin 21, and the inner side of transmission wheel 3 is provided with strip-shaped groove matched with positioning pin 21.

[0030] In the utility model, the convex of positioning pin 21 and the strip-shaped groove in the inner side of positioning pin 21 are matched, which can conveniently drive transmission wheel 3 to rotate when the output shaft of stepping motor 2 rotates, and the structure is convenient to disassemble and assemble.

[0031] Please refer to Fig. 2 With Fig. 3 Fig. 3 Among them: wire feeding wheel 4 is provided with wire binding groove, and bearing 7 is located at the same height with wire feeding wheel 4.

[0032] In the utility model, the wire binding groove can constrain the activity of welding wire, and wire feeding wheel 4 and bearing 7 at the same height can cooperate with each other to clamp welding wire and carry out wire feeding movement.

[0033] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the improvement concept of the utility model, carries out equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A laser welding push-pull wire mechanism special for a robot hand, comprising a mounting seat (1), characterized in that: The bottom of the mounting seat (1) is fixedly provided with a stepping motor (2), the output shaft of the stepping motor (2) penetrates through the mounting seat (1) and is provided with a transmission wheel (3), the top of the transmission wheel (3) is fixedly provided with a wire feeding wheel (4), the inside of the mounting seat (1) is provided with a movable pressure roller (6), the movable pressure roller (6) is provided with a bearing (7), the movable pressure roller (6) is threadedly connected with a locking screw (8), the bearing (7) is fixed on the movable pressure roller (6) through the locking screw (8), the mounting seat (1) is fixedly provided with a top cover (9) through bolts, the mounting seat (1) is threadedly connected with two spring jacks (10), one ends of the two spring jacks (10) are in contact with the movable pressure roller (6) and are located inside the mounting seat (1), the front and back surfaces of the mounting seat (1) are both provided with wire through holes (11), the two wire through holes (11) are both located between the wire feeding wheel (4) and the bearing (7).

2. The laser welding push-pull wire mechanism for a robot hand according to claim 1, characterized by: The movable pressure roller (6) comprises a fixed screw (61) which is threadedly connected with the inside of the mounting seat (1), the fixed screw (61) is rotatably connected with a pressure roller seat (62), the bearing (7) is mounted on the pressure roller seat (62), one end of the spring jack (10) which is located inside the mounting seat (1) is in contact with the side of the pressure roller seat (62) which is away from the fixed screw (61).

3. The laser welding push-pull wire mechanism for a robot hand according to claim 1, characterized by: The top of the wire feeding wheel (4) is smoothly contacted with a fixed sheet (5), the fixed sheet (5) is fixedly mounted on the bottom of the top cover (9).

4. The laser welding push-pull wire mechanism for a robot hand according to claim 1, characterized by: The output shaft of the stepping motor (2) is embedded with a positioning pin (21), the inside of the transmission wheel (3) is provided with a strip-shaped groove which is matched with the positioning pin (21).

5. The laser welding push-pull wire mechanism for a robot hand according to claim 1, characterized by: The wire feeding wheel (4) is provided with a wire binding groove, the bearing (7) is located at the same height with the wire feeding wheel (4).

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