Laser locating device for automobile arc welding bead

Abstract

The utility model discloses a laser locating device for an automobile arc welding bead, which comprises a welding gun, a mounting bracket, a mounting base plate, a motor base, a motor, a rotating shaft, a rotating arm, an opening and closing protective cover and a laser sensor, the welding gun is mounted on a robot, the mounting bracket is arranged on the welding gun, the mounting base plate is arranged on the mounting bracket, and the motor base is arranged on the motor base. The motor is arranged on the mounting substrate through the motor mounting seat, the rotating shaft is connected with an output shaft of the motor, the rotating shaft can rotate along with the motor, one end of the rotating arm is mounted on the rotating shaft, the rotating arm can turn over along with the rotating shaft, and the laser sensor is fixed on the mounting substrate. The opening and closing protection cover is fixed to the tail end of the rotating arm and located at the transmitting end of the laser sensor, and the receiving end of the laser sensor is used for protecting the transmitting end and the receiving end of the laser sensor. The device can protect the laser sensor, and effectively prevents the receiving end and the transmitting end of the laser sensor from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding laser location technology field especially relates to a device for laser location of automobile arc welding bead. BACKGROUND

[0002] In the field of arc welding, accurate positioning of the welding starting point and the bead is crucial for ensuring welding quality and efficiency. However, traditional arc welding methods often rely on manual teaching points and programming of robot, which is complex and time-consuming. When the clamping position of the workpiece is offset, or the assembly error of the workpiece itself cannot be ignored, it is necessary to re-teach programming, which greatly limits the promotion and application of robots in the field of arc welding. In addition, the working environment of arc welding is usually harsh, accompanied by dust, electromagnetic radiation, arc light and noise pollution, which poses a threat to the health of workers. With the reduction of new generation workers, the automobile industry is facing serious technical worker shortage and fault problems. Therefore, introducing robots for arc welding to improve the working environment of workers and fill the labor shortage has become an urgent need for industry development.

[0003] However, the existing robot welding technology still has certain limitations. For example, when the type of workpiece changes or the clamping position of the workpiece is offset, the traditional welding robot often needs to be reprogrammed to adapt to the new welding conditions. This not only increases the production cost, but also reduces the production efficiency. In addition, the existing welding robot system often lacks sufficient flexibility and intelligence, and is difficult to cope with complex and variable welding scenes. The repeated position accuracy of the bead in many workpiece welding scenes cannot meet the requirements of welding quality, so various bead location methods are used to improve welding quality, such as welding wire touch point location method, visual location method, laser location method, etc. Among them, laser ranging location is the most advanced bead location technology, which uses laser sensor ranging to calculate the bead position. Compared with the welding wire touch point location method, it has higher stability and accuracy, and compared with the visual location method, it has better passability. However, like other methods such as visual location, laser location also acquires position information by accepting light source reflection through sensor, and the distance between the transmitting end and receiving end of the sensor and the bead is often within the range of welding spatter. The receiving end of many sensors is easily damaged in high spatter environment. Although the replacement of perspective glass can reduce this problem, the loss rate of perspective glass is still high, and the perspective glass needs to be replaced frequently, which undoubtedly greatly increases the welding cost of the product.

[0004] How to solve the above problems has become a technical problem to be solved. UTILITY MODEL CONTENT

[0005] The utility model discloses a purpose at providing a kind of laser sensor capable of protection, effectively prevent the receiving end of laser sensor, the device for laser location for automobile arc welding bead of transmitting end damage.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of device for laser location for automobile arc welding bead, it includes welding torch, mounting bracket, installation substrate, motor seat, motor, rotating shaft, rotating arm, open and close protective cover, laser sensor, the welding torch is installed on robot, the mounting bracket is arranged on the welding torch, the installation substrate is arranged on the mounting bracket, the motor is set on the installation substrate by the motor mounting seat, the rotating shaft is connected with the output shaft of motor, the rotating shaft can rotate with motor, one end of the rotating arm is installed on the rotating shaft, the rotating arm can overturn with the rotating shaft, the laser sensor is fixed on the installation substrate, the open and close protective cover is fixed in the end of the rotating arm and open and close protective cover is located the transmitting end of the laser sensor for protecting the transmitting end of the laser sensor.

[0008] Preferably, it also includes front fixed protective cover and side fixed protective cover, the front fixed protective cover is fixed on the installation substrate and the front fixed protective cover is located the front end of the laser sensor, the front fixed protective cover is used to protect the front end of the laser sensor, the side fixed protective cover is fixed on the installation substrate and the side fixed protective cover is located the side end of the laser sensor, the side fixed protective cover is used to protect the side end of the laser sensor.

[0009] Due to the adoption of the above structure, the utility model has the beneficial effects as follows:

[0010] In the utility model, it includes welding torch, mounting support, installation base plate, motor seat, motor, rotating shaft, rotating arm, open and close protective cover, laser sensor, the welding torch is installed on robot, the mounting support is established on the welding torch, the installation base plate is established on the mounting support, the motor is established on the installation base plate through the motor mounting seat, the rotating shaft is connected with the output shaft of motor, the rotating shaft can rotate with motor, one end of rotating arm is installed on the rotating shaft, the rotating arm can overturn with the rotating shaft, the laser sensor is fixed on the installation base plate, the open and close protective cover is fixed in the end of rotating arm and open and close protective cover is located in the emission end, receiving end of laser sensor for protecting the emission end, receiving end of laser sensor. The utility model discloses through motor drives open and close protective cover to cover the emission end of laser sensor, effectively prevents the receiving end of laser sensor, and the emission end is easy to be damaged by welding slag, and simultaneously when laser sensor welding bead is positioned, the motor will open the open and close protective cover and not influence the positioning work of laser sensor, greatly reduce the loss of laser sensor perspective glass, reduce production cost.

[0011] The utility model will become more clear through the following description and combining with the drawings, these drawings are used to explain the embodiment of the utility model. DRAWINGS

[0012] In order to more clearly explain the technical scheme in the embodiment of the utility model, the following will be to the embodiment or the description of prior art needed to use the drawing briefly introduce, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skill in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0013] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0014] Fig. 2 It is the internal structure schematic diagram of the utility model;

[0015] Legend: 1, welding torch;2, mounting support;3, installation base plate;4, motor seat;5, motor;6, rotating shaft;7, rotating arm;8, open and close protective cover;9, laser sensor;10, front fixed protective cover;11, side fixed protective cover. DETAILED DESCRIPTION

[0016] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0017] Reference Figs. 1-2 The utility model provides a laser location device for automobile arc welding bead, including welding torch 1, installation support 2, installation base plate 3, motor seat 4, motor 5, rotating shaft 6, rotating arm 7, open and close protection cover 8, laser sensor 9, front fixed protection cover 10, side fixed protection cover 11. The welding torch 1 is installed on the robot and is used for welding workpiece, the installation support 2 is arranged on the welding torch 1, the installation base plate 3 is arranged on the installation support 2, the motor 5 is arranged on the installation base plate 3 through the installation seat 4, the rotating shaft 6 is installed on the output shaft of motor, the rotating shaft 6 can rotate with motor 5, one end of rotating arm 7 is installed on the rotating shaft 6, the rotating arm 7 can overturn with the rotating shaft 6, the open and close protection cover 8 is fixed in the end of rotating arm 7, the laser sensor 9 is fixed on the installation base plate 3, the open and close protection cover 8 is fixed in the end of rotating arm 7 and open and close protection cover 8 is located in the emission end, receiving end of laser sensor 9 for protecting the emission end, receiving end of laser sensor 9.

[0018] Preferably, it further includes front fixed protection cover 10 and side fixed protection cover 11, the front fixed protection cover 10 is fixed on the installation base plate 3 and the front fixed protection cover 10 is located in the front end of laser sensor 9, the front fixed protection cover 10 is used to protect the front end of laser sensor 9, prevents damaging the front end of laser sensor 9 when welding, the side fixed protection cover 11 is fixed on the installation base plate 3 and the side fixed protection cover 11 is located in the side end of laser sensor 9, the side fixed protection cover 11 is used to protect the side end of laser sensor 3, prevents damaging the side end of laser sensor 9 when welding.

[0019] The utility model discloses a welding torch 1 uses laser sensor 9 before welding to position, and motor 5 drives rotating shaft 6 and rotating arm 7 to open and close the protection cover 8, so that laser sensor 9 can position, and the temperature influence of laser sensor 9 perspective glass is reduced simultaneously, after positioning, motor 5 drives rotating shaft 6 and rotating arm 7 to open and close the protection cover 8, then welding torch carries out welding according to the positioning of laser sensor 9. In the welding process, because laser sensor 9 is protected by open and close protection cover 9, front fixed protection cover 10, side fixed protection cover 11 and mounting baseplate 3, and there is no contact between welding slag and laser sensor 9, effectively avoid the damage of laser sensor 9 by welding slag, in addition, through open and close protection cover 9, front fixed protection cover 10, side fixed protection cover 11, the damage of laser sensor 9 by high temperature can also be effectively reduced.

[0020] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art can make many possible changes and modifications to the utility model technical scheme or modify equivalent embodiments without departing from the scope of the utility model technical scheme, which does not affect the essence of the utility model. Therefore, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model, which does not depart from the content of the utility model technical scheme, still belongs to the protection scope of the utility model technical scheme.

Claims

1. A laser-aiming device for automotive arc welding beads, characterized by: It includes a welding gun, a mounting bracket, a mounting base plate, a motor seat, a motor, a rotating shaft, a rotating arm, an opening and closing protective cover, and a laser sensor. The welding gun is mounted on a robot. The mounting bracket is arranged on the welding gun. The mounting base plate is arranged on the mounting bracket. The motor is arranged on the mounting base plate through the motor mounting seat. The rotating shaft is connected with the output shaft of the motor. The rotating shaft can rotate with the motor. One end of the rotating arm is mounted on the rotating shaft. The rotating arm can be turned over with the rotating shaft. The laser sensor is fixed on the mounting base plate. The opening and closing protective cover is fixed at the end of the rotating arm and is located at the emitting end and the receiving end of the laser sensor for protecting the emitting end and the receiving end of the laser sensor.

2. A laser-aiming device for use in automotive arc welding according to claim 1, characterized in that: It also includes a front fixed protective cover and a side fixed protective cover. The front fixed protective cover is fixed on the mounting base plate and is located at the front end of the laser sensor. The front fixed protective cover is used for protecting the front end of the laser sensor. The side fixed protective cover is fixed on the mounting base plate and is located at the side end of the laser sensor. The side fixed protective cover is used for protecting the side end of the laser sensor.

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