Rapid spot welding mechanical arm for automobile parts

Abstract

The utility model discloses a quick spot welding mechanical arm for automobile parts, which comprises a base, a mechanical arm support, a first movable arm, a second movable arm and a spot welding machine head, the mechanical arm support is arranged at the top end of the base, and the first movable arm and the second movable arm are arranged above the mechanical arm support through rotating shafts. A lifting arm is arranged at one end of the second movable arm, a guide frame is arranged on one side of the lifting arm, the spot welding machine head is arranged below the guide frame, a third rotary driving piece is installed at one end in the second movable arm, and a first lead screw is installed in the lifting arm. And the outer wall of the first lead screw is sleeved with a first sliding block in a threaded mode, a second lead screw and a guide rod are installed in the guide frame, and the outer wall of the second lead screw and the outer wall of the guide rod are sleeved with second sliding blocks. The position of the spot welding machine head can be conveniently and rapidly adjusted, front and back spot welding can be rapidly carried out, and spot welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a rapid spot welding mechanical arm for automobile parts. Background Art

[0002] Auto parts are the various units that make up the whole car and are products that serve the car. Spot welding is a resistance welding method that assembles welded parts into lap joints and presses them between two electrodes, using resistance heat to melt the parent metal to form welds. When processing auto parts, spot welding robotic arms are required for spot welding.

[0003] The spot welding robot arm generally completes the spot welding work through the cooperation of multi-stage movable arms. However, when spot welding at different points on the same plane and at different heights of automotive parts, it is inconvenient to quickly adjust the position of the spot welding head. Moreover, for spot welding on the back of automotive parts, the automotive parts need to be turned over and clamped before spot welding, which is more troublesome and leads to low spot welding efficiency. Therefore, improvement is urgently needed. Utility Model Content

[0004] The utility model aims to provide a rapid spot welding robot arm for automobile parts to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kind of automobile spare parts fast spot welding robot arm, comprising a base, a robot arm support, a first movable arm, a second movable arm and a spot welding head, the robot arm support is arranged at the top end of the base, the first movable arm and the second movable arm are installed above the robot arm support through a rotating shaft, a lifting arm is arranged at one end of the second movable arm, and a guide frame is arranged on one side of the lifting arm, the spot welding head is arranged below the guide frame, a third rotating driving member is installed at one end inside the second movable arm, the output end of the third rotating driving member is fixedly connected to the lifting arm, a first screw rod is installed inside the lifting arm, and a first slider is threadedly mounted on the outer wall of the first screw rod, one end of the first slider is fixedly connected to the guide frame, a second screw rod and a guide rod are respectively installed inside the guide frame, and a second slider is mounted on the outer walls of the second screw rod and the guide rod.

[0006] Gears are installed on both sides of the base, and a rack is slidably installed under the gear. The rack is tightly meshed with the gear to facilitate driving the lock plate to translate; a first rotating drive component is installed on the top of the lifting arm, and the output end of the first rotating drive component is fixedly connected to the first screw rod for driving the first screw rod.

[0007] Preferably, the second slider is threadedly connected to the second screw rod, and the second slider is slidably connected to the guide rod, and the bottom end of the second slider is fixedly connected to the spot welding machine head.

[0008] Preferably, a laser emitter is installed on the outer wall of the bottom of the second sliding block to assist the spot welding work.

[0009] Preferably, a turning handle is installed on the outer wall of the base at the position of the gear, and one end of the turning handle extends to the inside of the base and is fixedly connected to the gear.

[0010] Preferably, a locking plate is fixed to one end of the rack to facilitate locking the robotic arm support.

[0011] Preferably, a locking groove is provided on the outer wall of the mechanical arm support at the position of the locking plate, and one end of the locking plate extends into the interior of the locking groove.

[0012] Preferably, a second rotary drive member is installed at one end of the guide frame, and an output end of the second rotary drive member is fixedly connected to the second screw rod.

[0013] After the specific description of the above technical scheme, the utility model has the following beneficial technical effects: when spot welding is performed on different points on the same plane of automotive parts, the second rotating drive member drives the second screw rod to rotate, so that the second slider translates along the guide frame, and the second slider drives the spot welding head to translate, so that the position of the spot welding head in the horizontal direction can be adjusted; the first rotating drive member drives the first screw rod to rotate, so that the first slider drives the guide frame to rise and fall, so that the position of the spot welding head in the vertical direction can be adjusted, thereby facilitating the rapid adjustment of the position of the spot welding head and realizing rapid spot welding; and, when it is necessary to spot weld the back side of automotive parts, the third rotating drive member drives the lifting arm to rotate one hundred and eighty degrees, so that the guide frame drives the spot welding head to rotate to the bottom of the automotive parts, so that the back side of the automotive parts can be spot welded, and there is no need to flip the automotive parts, which saves the steps and time of clamping the automotive parts, thereby improving the spot welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 It is a partial cross-sectional enlarged structural schematic diagram of the utility model.

[0016] Figure 3 It is a schematic diagram of an enlarged top view of the guide frame of the utility model.

[0017] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0018] Figure 5 It is a schematic diagram of an enlarged cross-sectional structure of the base of the utility model.

[0019] Figure 6 For the utility model Figure 5 Enlarged structural diagram at B in the middle.

[0020] In the figure: 1, base; 2, robot arm support; 3, first movable arm; 4, second movable arm; 401, third rotary drive member; 5, lifting arm; 6, guide frame; 7, spot welding head; 701, laser transmitter; 8, turning handle; 9, first rotary drive member; 10, first screw rod; 11, first slider; 12, second screw rod; 13, guide rod; 14, second slider; 15, second rotary drive member; 16, gear; 17, rack; 18, lock plate; 19, lock groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0022] See also Figure 1-6 The utility model provides an embodiment: a fast spot welding robot arm for automobile parts, comprising a base 1, a robot arm support 2, a first movable arm 3, a second movable arm 4 and a spot welding head 7, the robot arm support 2 is arranged at the top of the base 1, the first movable arm 3 and the second movable arm 4 are installed above the robot arm support 2 through a rotating shaft, a lifting arm 5 is arranged at one end of the second movable arm 4, and a guide frame 6 is arranged on one side of the lifting arm 5, and the spot welding head 7 is arranged below the guide frame 6.

[0023] A third rotating drive component 401 is installed at one end inside the second movable arm 4, and the output end of the third rotating drive component 401 is fixedly connected to the lifting arm 5. A first screw rod 10 is installed inside the lifting arm 5, and a first slider 11 is threadedly mounted on the outer wall of the first screw rod 10, and one end of the first slider 11 is fixedly connected to the guide frame 6.

[0024] When it is necessary to spot weld the back side of an automobile part, the third rotating drive member 401 drives the lifting arm 5 to rotate one hundred and eighty degrees, so that the guide frame 6 drives the spot welding head 7 to rotate to the bottom of the automobile part, and then the back side of the automobile part can be spot welded without turning over the automobile part, thereby eliminating the steps and time of clamping the automobile part, thereby improving the spot welding efficiency.

[0025] A second screw rod 12 and a guide rod 13 are respectively installed inside the guide frame 6, and a second slider 14 is mounted on the outer walls of the second screw rod 12 and the guide rod 13. A second rotating drive member 15 is installed at one end of the guide frame 6, and the output end of the second rotating drive member 15 is fixedly connected to the second screw rod 12.

[0026] The spot welding robot arm is controlled by a program, and the spot welding head 7 performs spot welding at a specified position of the spot welding robot arm. The laser beam emitted by the laser emitter 701 is aimed at the welding point of the automotive parts, and the spot welding head 7 welds the welding point. When spot welding is performed on different points on the same plane of the automotive parts, the second rotating drive member 15 drives the second screw rod 12 to rotate, so that the second slider 14 translates along the guide frame 6. The second slider 14 drives the spot welding head 7 to translate, and the position of the spot welding head 7 in the horizontal direction can be adjusted.

[0027] Gears 16 are installed on both sides of the base 1, and a rack 17 is slidably installed below the gear 16, and the rack 17 is tightly meshed with the gear 16; a first rotating drive member 9 is installed on the top of the lifting arm 5, and the output end of the first rotating drive member 9 is fixedly connected to the first screw rod 10.

[0028] The first rotating drive member 9 drives the first screw rod 10 to rotate, so that the first slider 11 drives the guide frame 6 to rise and fall, thereby adjusting the position of the spot welding head 7 in the vertical direction; the second slider 14 is threadedly connected to the second screw rod 12, and the second slider 14 is slidably connected to the guide rod 13, and the bottom end of the second slider 14 is fixedly connected to the spot welding head 7.

[0029] A laser emitter 701 is installed on the outer wall at the bottom of the second slider 14; a turning handle 8 is installed on the outer wall of the base 1 at the position of the gear 16, one end of the turning handle 8 extends to the inside of the base 1 and is fixedly connected to the gear 16; a locking plate 18 is fixed to one end of the rack 17; a locking groove 19 is provided on the outer wall of the robot arm support 2 at the position of the locking plate 18, and one end of the locking plate 18 extends to the inside of the locking groove 19.

[0030] When the spot welding robot arm needs to be inspected and maintained, the handle 8 is turned to rotate the gear 16, and the gear 16 drives the rack 17 to translate, and the rack 17 drives the locking plate 18 to move out of the locking groove 19, and then the robot arm support 2 is lifted up to separate it from the base 1, so that the spot welding robot arm can be quickly disassembled, which improves the convenience of inspection and maintenance.

[0031] During implementation, the spot welding robot arm is mainly composed of a robot arm support 2, a first movable arm 3, a second movable arm 4, a lifting arm 5, a guide frame 6, and a spot welding head 7. The robot arm support 2 is fixed to the top of the base 1. Then, when spot welding the various automotive parts, the various automotive parts are first clamped and fixed by a clamp. Secondly, the spot welding robot arm is controlled by a program, and the spot welding head 7 performs spot welding at a specified position of the spot welding robot arm. The laser beam emitted by the laser emitter 701 is aimed at the welding point of the automotive parts, and the spot welding head 7 welds the welding point. Next, when spot welding is performed on different points on the same plane of automobile parts, the second rotary drive member 15 drives the second screw rod 12 to rotate, so that the second slider 14 translates along the guide frame 6, and the second slider 14 drives the spot welding head 7 to translate, so that the position of the spot welding head 7 in the horizontal direction can be adjusted. The first rotary drive member 9 drives the first screw rod 10 to rotate, so that the first slider 11 drives the guide frame 6 to rise and fall, so that the position of the spot welding head 7 in the vertical direction can be adjusted, thereby facilitating the rapid adjustment of the position of the spot welding head 7 and realizing rapid spot welding.

[0032] When it is necessary to spot weld the back side of an automobile part, the third rotating drive member 401 drives the lifting arm 5 to rotate one hundred and eighty degrees, so that the guide frame 6 drives the spot welding head 7 to rotate to the bottom of the automobile part, and spot welding can be performed on the back side of the automobile part. There is no need to flip the automobile part, which saves the steps and time of clamping the automobile part, thereby improving the spot welding efficiency. Finally, when it is necessary to inspect and maintain the spot welding robot arm, the handle 8 is turned to rotate the gear 16, and the gear 16 drives the rack 17 to translate it, and the rack 17 drives the locking plate 18 to move out of the locking groove 19, and then the robot arm support 2 is lifted to separate it from the base 1, so that the spot welding robot arm can be quickly disassembled, thereby improving the convenience of inspection and maintenance.

Claims

1. A rapid spot welding robot arm for automobile parts, characterized in that: The invention comprises a base (1), a mechanical arm support (2), a first movable arm (3), a second movable arm (4) and a spot welding head (7), wherein the mechanical arm support (2) is arranged at the top of the base (1), the first movable arm (3) and the second movable arm (4) are installed above the mechanical arm support (2) via a rotating shaft, a lifting arm (5) is arranged at one end of the second movable arm (4), and a guide frame (6) is arranged at one side of the lifting arm (5), the spot welding head (7) is arranged below the guide frame (6), a third rotating driving member (401) is installed at one end inside the second movable arm (4), the output end of the third rotating driving member (401) is fixedly connected to the lifting arm (5), and a third rotating driving member (401) is installed inside the lifting arm (5). A screw rod (10), and a first slider (11) is threadedly mounted on the outer wall of the first screw rod (10), one end of the first slider (11) is fixedly connected to a guide frame (6), a second screw rod (12) and a guide rod (13) are respectively mounted inside the guide frame (6), and a second slider (14) is mounted on the outer walls of the second screw rod (12) and the guide rod (13); gears (16) are mounted on both sides of the base (1), and a rack (17) is slidably mounted below the gear (16), and the rack (17) is tightly meshed with the gear (16); a first rotary drive member (9) is mounted on the top end of the lifting arm (5), and the output end of the first rotary drive member (9) is fixedly connected to the first screw rod (10).

2. The automotive parts rapid spot welding robot arm according to claim 1, characterized in that: The second slider (14) is threadedly connected to the second screw rod (12), the second slider (14) is slidably connected to the guide rod (13), and the bottom end of the second slider (14) is fixedly connected to the spot welding machine head (7).

3. The automotive parts rapid spot welding robot arm according to claim 1, characterized in that: A laser emitter (701) is mounted on the outer wall of the bottom of the second sliding block (14).

4. The automotive parts rapid spot welding robot arm according to claim 1, characterized in that: A rotating handle (8) is mounted on the outer wall of the base (1) at the position of the gear (16); one end of the rotating handle (8) extends into the interior of the base (1) and is fixedly connected to the gear (16).

5. The automotive parts rapid spot welding robot arm according to claim 1, characterized in that: A locking plate (18) is fixed to one end of the rack (17).

6. The automotive parts rapid spot welding robot arm according to claim 5, characterized in that: A locking groove (19) is provided on the outer wall of the mechanical arm support (2) at the position of the locking plate (18), and one end of the locking plate (18) extends to the inside of the locking groove (19).

7. The automotive parts rapid spot welding robot arm according to claim 1, characterized in that: A second rotary drive member (15) is mounted on one end of the guide frame (6), and an output end of the second rotary drive member (15) is fixedly connected to the second screw rod (12).

Images