CN218926647U - A robotic welding system for welding half shaft casings - Google Patents

Abstract

The utility model relates to the technical field of welding systems, in particular to a robot welding system for welding a half-shaft sleeve. The welding device comprises a positioner, and a workpiece positioning mechanism arranged on the positioner, wherein a welding robot is arranged on one side of the positioner and used for fixing a workpiece, and the welding robot is used for welding the workpiece on the workpiece positioning mechanism; the workpiece positioning mechanism comprises a positioning frame, and a side pressing mechanism and an end pressing mechanism which are arranged on the positioning frame, wherein the side pressing mechanism and the end pressing mechanism are used for fixing a workpiece together. The position changing function of the position changing machine can ensure that a robot can not reach or is unfavorable for the welding seam position, in the welding process, the workpiece to be welded can obtain an ideal welding position, and the welding gun welds in the optimal welding posture, so that the welding range of the robot is enlarged, the welding quality and the appearance requirements are ensured, and the deformation of the workpiece after welding is reduced; the double stations can realize synchronous welding, feeding and discharging, and production efficiency is improved.

Description

A robotic welding system for welding half shaft casings

technical field

The invention relates to the technical field of welding systems, in particular to a robot welding system for welding half shaft casings.

Background technique

In order to improve production efficiency, the current workpiece welding is automatically welded by a welding system. The half shaft sleeve is an important part of the automobile drive axle assembly. It is integrated with the drive axle housing to fix the axial relative position of the left and right drive wheels, and supports the frame and the mass of each assembly on it. When driving, it bears the road surface reaction force and moment transmitted from the wheels, and transmits it to the frame through the suspension. The seams of the half-axle sleeves need to be welded during the preparation process to increase the strength.

CN110405298A discloses an automatic welding device for a differential housing and a half-shaft sleeve, including a lower fixing plate, which fixes the left and right guide columns, the middle fixing plate is fixedly connected with the left and right guide columns, and the drive plate is connected with the left and right guide columns. , The right guide column is slidingly connected, the middle fixed plate fixes the down-press cylinder, the piston rod of the down-press cylinder fixes the drive plate, the drive plate fixes the electric turntable, the half-shaft sleeve fixing mechanism, the shell pressure rod, and the half-shaft sleeve fixing mechanism For positioning and clamping the upper end of the semi-shaft sleeve, the lower end of the housing pressure rod is fixed to press the half ring, which is used to press and fix the annular plane at the edge of the differential housing, and the electric turntable is fixed by welding the follower mechanism The left and right welding mechanisms, the lower fixed plate is used to fix the shell positioning plate, the shell positioning plate is used to position the lower end of the differential case and the half shaft sleeve, and the pressing cylinder simultaneously positions and fixes the half shaft sleeve and the differential At the same time, the welding seam height position of the electric welding mechanism is easy to control, and the welding steps are well coordinated. However, when this kind of automatic welding device is welding, the workpiece fixing mechanism may not be able to firmly fix the workpiece under the action of external force, causing the welding position to shift, and this welding device can only weld the fixed position of the workpiece, and cannot be changed as needed Position of welding.

Contents of the invention

The purpose of the present invention is to provide a robot welding system for welding half-shaft casings, so as to ensure that the workpieces are firmly fixed during the welding process, ensure the accuracy of the weld seam, and change the inclination angle of the workpiece according to the position of the weld seam. To facilitate the welding operation of the robot.

To achieve the above object, the present invention provides the following technical solutions:

A robot welding system for welding half-shaft casings, comprising a positioner, a workpiece positioning mechanism arranged on the positioner, a welding robot is provided on one side of the positioner, and the workpiece positioning mechanism is used for The workpiece is fixed, and the welding robot is used to weld the workpiece on the workpiece positioning mechanism;

The workpiece positioning mechanism includes a positioning frame, a side pressure mechanism and an end pressure mechanism arranged on the positioning frame, and the side pressure mechanism and the end pressure mechanism jointly fix the workpiece.

In a further technical solution, the lateral pressure mechanism is provided with two groups, respectively arranged on both sides of the workpiece, including a power part fixed on the positioning frame, and a clamping assembly connected with the power part, and the clamping assembly is used for The workpiece is clamped.

In a further technical solution, a transmission assembly is also connected between the power part and the clamping assembly, and the transmission assembly includes an L-shaped transmission rod that is rotatably connected to the output end of the power part, and is rotatably connected to the right angle of the L-shaped transmission rod. a linear transmission rod, the linear transmission rod is rotatably connected with a connecting rod, and the connecting rod is fixedly connected with the clamping assembly.

In a further technical solution, the positioning frame is provided with a side pressure fixing seat, the side pressure mechanism is arranged on the side pressure fixing seat, the side pressure fixing seat is provided with a connecting rod guide groove, and the connecting rod is connected to the The rod guide groove is slidably connected, one end of the L-shaped transmission rod is rotatably connected to the output end of the power part, and the other end is rotatably connected to the side pressure fixing seat, and the power part is rotatably connected to the side pressure fixing seat.

Further technical solutions,

A guide piece is provided between the side pressure fixing seat and the clamping assembly, and the guide piece includes a guide plate fixed on the side pressure fixing seat, and two guide rods fixed on the clamping assembly, and the guide rods pass through The guide plate is slidably connected with the guide plate, and the connecting rod passes through the guide plate and is fixedly connected with the clamping assembly.

In a further technical solution, the power part is a side pressure cylinder, and the clamping component is a clamp or a side pressure block.

In a further technical solution, the end pressing mechanism includes a main end pressing assembly arranged at one end of the workpiece, an auxiliary end pressing assembly arranged at the other end of the workpiece, and the main end pressing assembly includes a main end pressing seat fixedly connected with the positioning frame, The main end pressure cylinder is arranged on the main end pressure seat, the output end of the main end pressure cylinder is fixed with the main workpiece seat, and the auxiliary end pressure assembly includes an auxiliary end pressure seat fixedly connected with the positioning frame, which is located at the auxiliary end Auxiliary workpiece seat on the press seat.

In a further technical solution, the end pressure mechanism includes an end pressure cylinder fixed on the positioning frame, and a lower pressure claw fixed on the output end of the end pressure cylinder.

In a further technical solution, the positioning frame is provided with a welding hole, the side pressure mechanism and the end pressure mechanism are both arranged on the positioning frame around the welding hole, the positioning frame is provided with a positioning seat, and the workpiece is set on the positioning seat;

A gear rod is arranged on the welding hole, and the gear rod is used for positioning the workpiece from the lower end of the workpiece.

A further technical solution also includes an electric control system and a torch cleaning station, the welding robot is provided with a welding torch, the electric control system is connected to the welding robot, and the torch cleaning station is used for cleaning the welding torch;

Both sides of the workpiece positioning mechanism are rotatably connected with the positioner.

A kind of beneficial effect of the robot welding system that is used for welding semi-axis casing of the present invention is:

The side pressure mechanism and the end pressure mechanism can strengthen the fixation of the workpiece and prevent it from moving during the welding process. The welding robot can perform automatic welding; the displacement function of the positioner can make the robot unable to reach or is not conducive to welding. During the welding process, the workpiece to be welded can obtain an ideal welding position, and the welding torch performs welding with the best welding posture, which expands the welding range of the robot, ensures the welding quality and appearance requirements, and reduces the deformation of the workpiece after welding ;Double stations can realize welding, loading and unloading simultaneously, and improve production efficiency.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is a schematic structural view of the workpiece positioning mechanism in Embodiment 1 of the present invention;

3 is a schematic structural view of a workpiece positioning mechanism in Embodiment 2 of the present invention;

Fig. 4 is a side view structural schematic diagram of the fixing and loosening of the workpiece positioning mechanism in Embodiment 1 of the present invention;

In the picture:

positioner 100, workpiece positioning mechanism 200, welding robot 300, welding gun 400, electric control system 500, gun cleaning station 600,

Positioning frame 1, workpiece 2, positioning seat 3, power part 4, clamping assembly 5, L-shaped transmission rod 6, linear transmission rod 7, connecting rod 8, side pressure fixing seat 9, connecting rod guide groove 10, guide plate 11. Guide rod 12, main end pressure seat 13, main end pressure cylinder 14, main workpiece seat 15, auxiliary end pressure seat 16, auxiliary workpiece seat 17, welding hole 18, gear lever 19, end pressure cylinder 20, lower pressure claw twenty one.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1:

See Figures 1, 2, 4, a robotic welding system for welding half shaft casings,

Including two sets of positioners 100, the workpiece positioning mechanism 200 located on the two sets of positioners 100, the workpiece positioning mechanism 200 is used to fix the workpiece 2, the two sides of the workpiece positioning mechanism 200 are connected with the positioner 100-turn connection. A welding robot 300 is arranged between the two positioners 100, and a welding torch 400 is arranged on the welding robot 300, and the welding robot 300 is used to weld the workpiece 2 on the workpiece positioning mechanism 200; it also includes an electric control The system 500 and the torch cleaning station 600 , the electric control system 500 is connected with the welding robot 300 , and the torch cleaning station 600 is used for cleaning the welding torch 400 . The welding robot 300 can alternately weld the workpiece 2 on the two workpiece positioning mechanisms 200. When the worker positions the workpiece 2 on one workpiece positioning mechanism 200, the welding robot 300 welds the workpiece 2 on the other workpiece positioning mechanism 200 , improve production efficiency, the positioner 100 is rotationally connected with the workpiece positioning mechanism 200, so the angle of the workpiece positioning mechanism 200 can be adjusted, so that the workpiece 2 to be welded can obtain an ideal welding position, and the welding torch 400 can perform welding with the best welding posture.

The workpiece positioning mechanism 200 includes a positioning frame 1 , a side pressing mechanism and an end pressing mechanism arranged on the positioning frame 1 , and the side pressing mechanism and the end pressing mechanism jointly fix the workpiece 2 . The positioning frame 1 is provided with a welding hole 18, the side pressure mechanism and the end pressure mechanism are all arranged on the positioning frame 1 on the side of the welding hole 18, the positioning frame 1 is provided with a positioning seat 3, and the workpiece 2 is set on the positioning seat 3; the positioning seat 3 is used to support and limit the workpiece 2 from the bottom. The end clamping mechanism is used to clamp both ends of the workpiece 2, and the side clamping mechanism is used to clamp both sides of the workpiece 2, and the bottom and peripheral sides of the workpiece 2 are fixed to ensure Ensure the stability of the workpiece 2;

The lateral pressure mechanism is provided with two groups, which are respectively arranged on both sides of the tool 2, including the power part 4 fixed on the positioning frame 1, and the clamping assembly 5 connected with the power part 4, and the clamping assembly 5 is used for For clamping the workpiece 2, the power part 4 is a side pressure cylinder, and the clamping component 5 is a clamp. The shape of the clamp 5 matches the shape of the workpiece 2 and is used for clamping the workpiece 2 . A transmission assembly is also connected between the power part 4 and the clamping assembly 5, and the transmission assembly includes an L-shaped transmission rod 6 that is rotatably connected to the output end of the power part 5, and is rotatably connected to the right angle of the L-shaped transmission rod 6. The linear transmission rod 7 is connected to the linear transmission rod 7 with a connecting rod 8 which is fixedly connected with the clamping assembly 5 . The positioning frame 1 is provided with a side pressure fixing seat 9, the side pressure mechanism is located on the side pressure fixing seat 9, and the side pressure fixing seat 9 is provided with a connecting rod guide groove 10, and the connecting rod 8 and the The connecting rod guide groove 10 is slidably connected, one end of the L-shaped transmission rod 6 is rotatably connected to the output end of the power part 4, and the other end is rotatably connected to the side pressure fixing seat 9, and the power part 4 is rotatably connected to the side pressure fixing seat 9 connect. A guide member is provided between the side pressure fixing seat 9 and the clamping assembly 5, and the guide member includes a guide plate 11 fixed on the side pressure fixing seat 9, and two guide rods 12 fixed on the clamping assembly 5 , the guide rod 12 passes through the guide plate 11 and is slidably connected with the guide plate 11 , and the connecting rod 8 passes through the guide plate 11 and is fixedly connected with the clamping assembly 5 . The expansion rod of the side pressure cylinder drives the L-shaped transmission rod 6 to rotate, and then the linear transmission rod 7 drags the connecting rod 8 to move along the connecting rod guide groove 10, driving the clamp to move, and the setting of the guide plate 11 and the guide rod 12 can ensure The direction of movement of the clamp.

The end pressure mechanism includes a main end pressure assembly arranged at one end of the workpiece 2, and an auxiliary end pressure assembly arranged at the other end of the workpiece 2. The main end pressure assembly includes a main end pressure seat 13 fixedly connected with the positioning frame 1. The main end pressure cylinder 14 on the main end pressure seat 13, the output end of the main end pressure cylinder 14 is fixed with the main workpiece seat 15, and the auxiliary end pressure assembly includes an auxiliary end pressure seat 16 fixedly connected with the positioning frame 1 , The auxiliary workpiece seat 17 located on the auxiliary end pressure seat 16.

The positioning frame 1 is provided with a slide rail, and the auxiliary end press seat 16 is fixedly connected with the positioning frame 1 through the slide rail. According to workpieces of different lengths, the position of the auxiliary end press seat 16 on the slide rail is moved, and the positioning pin is used to Locate and lock.

Example 2:

Please refer to Figs. 1 and 3, a robot welding system for welding half-shaft casings. The similarities between this embodiment and Embodiment 1 will not be repeated, and the difference is:

The welding hole 18 is provided with a stop bar 19 , and the stop bar 19 is used for positioning the workpiece 2 from the lower end of the workpiece 2 . The welding hole 18 can also expose the back side of the workpiece 2 while reducing the weight of the positioning frame 1, so that the back side of the workpiece 2 can be welded conveniently.

The lateral pressure mechanism is provided with two groups, respectively arranged on both sides of the workpiece 2, including a power part 4 fixed on the positioning frame 1, and a clamping assembly 5 connected with the power part 4, and the clamping assembly 5 is used for Workpiece 2 is clamped. The power part 4 is a side pressure cylinder, and the clamping assembly 5 is a side pressure block.

There are 3 groups of end pressing mechanisms, which are respectively arranged at the two ends and the middle part of the workpiece 2, and compress the two ends and the middle part of the workpiece 2. It includes an end pressure cylinder 20 fixed on the positioning frame 1 , a lower pressure claw 21 fixed on the output end of the end pressure cylinder 20 , and the shape of the positioning seat 3 matches the two ends of the workpiece 2 . The output end of the end pressure cylinder 20 is a telescopic rod, and the direction of the telescopic rod is vertically upwards, and the lower claw 21 is perpendicular to the telescopic rod to ensure that the lower claw 21 presses the workpiece 2, and the lower claw 21 at the two ends of the workpiece 2 is connected to two The positioning seat 3 cooperates and fixes the two ends of the workpiece 2.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (10)

1. A robot welding system for welding semi-axis sleeves, characterized in that: it comprises a positioner, a workpiece positioning mechanism arranged on the positioner, one side of the positioner is provided with a welding robot, the The workpiece positioning mechanism is used to fix the workpiece, and the welding robot is used to weld the workpiece on the workpiece positioning mechanism; The workpiece positioning mechanism includes a positioning frame, a side pressure mechanism and an end pressure mechanism arranged on the positioning frame, and the side pressure mechanism and the end pressure mechanism jointly fix the workpiece. 2. The robot welding system for welding half-shaft casings according to claim 1, characterized in that: said lateral pressure mechanism is provided with two groups, which are respectively arranged on both sides of the workpiece, including The power part is a clamping assembly connected with the power part, and the clamping assembly is used for clamping the workpiece. 3. The robot welding system for welding half-shaft casings according to claim 2, characterized in that: a transmission assembly is connected between the power part and the clamping assembly, and the transmission assembly includes a connection with the power part The output end is rotatably connected to an L-shaped transmission rod, and a linear transmission rod is rotatably connected to the right angle of the L-shaped transmission rod. The linear transmission rod is rotatably connected to a connecting rod, and the connecting rod is fixedly connected to the clamping assembly. 4. The robot welding system for welding half-shaft casings according to claim 3, characterized in that: the positioning frame is provided with a side pressure fixing seat, and the side pressure mechanism is arranged on the side pressure fixing seat, The side pressure fixing seat is provided with a connecting rod guide groove, and the connecting rod is slidingly connected with the connecting rod guiding groove. One end of the L-shaped transmission rod is rotationally connected with the output end of the power part, and the other end is connected with the side pressure fixing seat. Rotationally connected, the power part is rotatably connected to the lateral pressure fixing seat. 5. The robot welding system for welding half shaft casing according to claim 4, characterized in that: A guide piece is provided between the side pressure fixing seat and the clamping assembly, and the guide piece includes a guide plate fixed on the side pressure fixing seat, and two guide rods fixed on the clamping assembly, and the guide rods pass through The guide plate is slidably connected with the guide plate, and the connecting rod passes through the guide plate and is fixedly connected with the clamping assembly. 6. The robot welding system for welding half-shaft casings according to claim 2, characterized in that: the power part is a side pressure cylinder, and the clamping component is a clamp or a side pressure block. 7. The robot welding system for welding half-shaft casings according to claim 1, characterized in that: the end pressure mechanism includes a main end pressure assembly arranged at one end of the workpiece, and an auxiliary end pressure assembly arranged at the other end of the workpiece Assemblies, the main end pressure assembly includes a main end pressure seat fixedly connected with the positioning frame, a main end pressure cylinder arranged on the main end pressure seat, the output end of the main end pressure cylinder is fixed with a main workpiece seat, the The auxiliary end pressing assembly includes an auxiliary end pressing seat fixedly connected with the positioning frame, and an auxiliary workpiece seat arranged on the auxiliary end pressing seat. 8. The robot welding system for welding half-shaft casings according to claim 1, characterized in that: the end pressure mechanism includes an end pressure cylinder fixed on the positioning frame, and fixed on the output end of the end pressure cylinder the lower jaw. 9. The robot welding system for welding half-shaft casings according to claim 1, characterized in that: the positioning frame is provided with welding holes, and the side pressure mechanism and the end pressure mechanism are both arranged around the welding holes On the positioning frame on the side, the positioning frame is provided with a positioning seat, and the workpiece is arranged on the positioning seat; A gear rod is arranged on the welding hole, and the gear rod is used for positioning the workpiece from the lower end of the workpiece. 10. The robot welding system for welding half-shaft casings according to claim 1, characterized in that: it also includes an electric control system and a torch cleaning station, the welding robot is provided with a welding torch, and the electric control system and The welding robot is connected, and the torch cleaning station is used for cleaning the welding torch; Both sides of the workpiece positioning mechanism are rotatably connected with the positioner.

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