High-precision welding machine applied to annular workpiece

Abstract

The invention discloses a high-precision welding machine applied to an annular workpiece. Pressing air cylinders are arranged on the two sides of a supporting table of the high-precision welding machine. A plurality of groups of mounting brackets and a plurality of driving cylinders are also arranged on the working platform; the working platform is further provided with a limiting air cylinder. The telescopic end of the air cylinder is provided with a limiting stop block used for limiting the welding position of the annular workpiece. The mounting bracket comprises a first connecting frame; a first adjusting block is rotationally arranged on the periphery of the first connecting frame; a second connecting frame penetrates through the first adjusting block; a second adjusting block is rotationally arranged on the periphery of the second connecting frame; the second adjusting block is provided with a connecting rod; a corresponding welding gun is mounted at the end part of the connecting rod; the working platform is provided with a controller used for controlling the pressing air cylinders, the limiting air cylinders and the limiting air cylinders. The high-precision welding machine applied to the annular workpiece is high in welding precision, high in welding efficiency, free of harm to eyes of people in the operation process and higher in safety.

Description

Technical Field

[0001] The invention relates to a high-precision welding machine applied to annular workpieces. Background Art

[0002] The connecting end of the annular workpiece needs to be welded and fixed, and the welding part of the connecting end is usually welded and fixed by one or more welding points. The existing method of welding the connecting end of the annular workpiece is to clamp the annular workpiece with a workpiece clamp, and then weld it with a manual hand-held welding gun, or manually place the annular workpiece on a designated welding station, and then drive the welding gun up and down by a welding gun driving cylinder to weld the connecting end of the placed annular workpiece. The above-mentioned manual hand-held welding gun welding and driving cylinder driving welding gun welding methods are to manually determine the welding position of the welding point, that is, after clamping the annular workpiece, the manual hand-held welding gun is roughly aligned with the welding point for welding, or the annular workpiece is placed in a rough position, and the naked eye judges the welding point aligned with the welding gun, and then the welding gun is moved up and down for welding. Such a welding method cannot perform high-precision welding on the connecting end of the annular workpiece, and the manual focusing of the welding point is slow, the welding efficiency is high, the accuracy is low, and it is also more harmful to people's eyes during operation. Summary of the invention

[0003] The present invention provides a high-precision welding machine for annular workpieces to solve the above-mentioned technical problems, and specifically adopts the following technical solutions: A high-precision welding machine for annular workpieces comprises: a working platform; a supporting platform for supporting the annular workpiece is provided on the working platform; clamping cylinders for pressing the annular workpiece against the supporting platform are provided on both sides of the supporting platform; the working platform is also provided with multiple groups of mounting brackets for mounting welding guns and multiple driving cylinders for driving the corresponding mounting brackets to move up and down respectively so that the corresponding welding guns can move up and down to weld the corresponding positions of the annular workpiece; the working platform is also provided with a limiting cylinder; the telescopic end of the positioning cylinder is provided with a limiting block for limiting the position of the welding position of the annular workpiece; the mounting bracket comprises: a first connecting frame; a first adjusting block is provided on the outer periphery of the first connecting frame for rotation; a second connecting frame is penetrated by the first adjusting block; a second connecting frame is provided on the outer periphery for rotation; a connecting rod is installed on the second adjusting block; the corresponding welding gun is installed on the end of the connecting rod; the working platform is provided with a controller for controlling the clamping cylinder, the limiting cylinder and the limiting cylinder.

[0004] Furthermore, a laser emitter is installed at the end of the welding gun; the shell of the welding gun is formed with a light-through groove for allowing the light emitted by the laser generator to irradiate the welding point; a light angle detection sensor for detecting the angle between the laser emitted by the laser generator and the plane where the welding point is located is installed above the limit block; the light angle detection sensor is arranged opposite to the welding point of the annular workpiece; the laser emitter and the light angle detection sensor are both communicatively connected to the controller; the controller is electrically installed with an alarm for issuing an alarm when the detection value of the light angle detection sensor exceeds a preset value.

[0005] Furthermore, a sliding rod is slidably provided on the limit stopper; the light angle detection sensor is slidably provided in a sliding groove formed on the sliding rod; the bottom end of the light angle detection sensor is provided with a first distance sensor for detecting the distance between the light angle detection sensor and the welding point; the first distance sensor is communicatively connected to the controller.

[0006] Furthermore, the first distance sensor is a laser radar that can emit laser and detect distance.

[0007] Furthermore, the limit stopper is L-shaped, and the L-shaped recess formed by the limit stopper abuts against the welding position of the annular workpiece; the slide bar is arranged above the L-shaped recess.

[0008] Furthermore, the first adjusting block and the second adjusting block are both provided with a second distance sensor for detecting the moving distance thereof and an angle sensor for detecting the rotation direction thereof; the second distance sensor and the angle sensor are communicatively connected to the controller.

[0009] Furthermore, pressure sensors are symmetrically arranged on both sides of the support platform; and a pressing block is arranged at the end of the pressing cylinder to be directly opposite to the corresponding pressure sensor.

[0010] Furthermore, a baffle is provided on one side of the clamping block for contacting the outer side of the annular workpiece to limit the axial placement position of the annular workpiece; the baffle is slidably arranged on the clamping block; a micro cylinder is arranged inside the clamping block; the baffle is connected to the cylinder rod of the micro cylinder, and slides to a preset position under the drive of the cylinder rod to adapt to annular workpieces of different widths.

[0011] Furthermore, a third distance sensor for detecting the telescopic distance of the limit stopper is provided at the cylinder end of the limit cylinder to adapt to the welding of annular workpieces of different thicknesses.

[0012] Furthermore, the housing of the light angle detection sensor is a transparent housing capable of transmitting laser light.

[0013] The benefit of the present invention lies in that the high-precision welding machine for annular workpieces provided can focus the welding points of the connecting ends of the annular workpieces accurately and quickly, and can adjust the welding gun angle according to the annular workpieces of different specifications by installing the bracket, so that the connecting ends of the annular workpieces can be intelligently and high-precision welded, with high welding efficiency. It can not only effectively improve the welding quality of the annular workpieces, but also will not cause damage to human eyes during operation, and is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 is a schematic diagram of a high-precision welding machine for annular workpieces according to the present invention; Figure 2 yes Figure 1 A partially enlarged schematic diagram of a high-precision welding machine for annular workpieces.

[0016] Working platform 11, supporting platform 12, pressing cylinder 13, pressing block 14, baffle 141, micro cylinder 142, mounting bracket 15, first connecting frame 151, first adjusting block 152, second connecting frame 153, second adjusting block 154, connecting rod 155, driving cylinder 16, limiting cylinder 17, limiting block 18, sliding rod 19, sliding groove 191, light angle detection sensor 20, laser emitter 21, first distance sensor (not shown), second distance sensor 22, third distance sensor 23, angle sensor 24, pressure sensor 25, controller (not shown), welding gun 26, light through groove 261. DETAILED DESCRIPTION

[0017] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0018] like Figure 1 to Figure 2As shown, a high-precision welding machine for annular workpieces of the present application is provided, comprising: a working platform 11, on which a support platform 12 is provided for supporting the annular workpiece. A clamping cylinder 13 is provided on both sides of the support platform 12, and the clamping cylinder 13 is used to clamp the annular workpiece on the supporting inclined surfaces on both sides of the support platform 12. A plurality of mounting brackets 15 are also provided on the working platform 11, and a welding gun 26 is installed at the mounting end of each mounting bracket 15. A plurality of driving cylinders 16 are also provided on the working platform 11, and the plurality of driving cylinders 16 respectively drive the corresponding mounting brackets 15 to move up and down, so that the corresponding welding guns 26 move up and down to weld the corresponding positions of the annular workpiece.

[0019] Furthermore, a limit cylinder 17 is also provided on the working platform 11, and a limit stop block 18 is provided at the telescopic end of the limit cylinder 17. The limit stop block 18 can be used to limit the welding position of the annular workpiece, that is, after the annular workpiece is placed on the support platform 12, the annular workpiece is rotated (the placement of the annular workpiece can be operated by a robot or manually) until the connecting end of the annular workpiece conflicts with the limit stop block 18. At this time, the welding position is fixed, and the clamping end of the clamping cylinder 13 extends out to clamp the two symmetrical points of the annular workpiece on both sides of the support platform 12 from both sides of the annular workpiece. Then the limit cylinder 17 drives the limit stop block 18 to retract, and the driving cylinder 16 drives the welding gun 26 corresponding to one or more welding points to move downward to the specified position (the distance from the welding nozzle of the welding gun 26 to the welding point is controlled within the pre-examination range, thereby ensuring that the flame temperature of the welding gun 26 is maximized), and ignites the welding point for welding. When the welding time of the welding gun 26 reaches the preset time, the welding operation is stopped, the driving cylinder 16 drives the welding gun 26 back to the initial position, the clamping cylinder 13 also returns to the initial position, and finally the annular workpiece is taken out (the placement of the annular workpiece can be operated by a robot or manually).

[0020] Specifically, the mounting bracket 15 includes: a first connecting frame 151, a first adjusting block 152 is rotatably provided on the outer periphery of the first connecting frame 151, a second connecting frame 153 is penetrated through the first adjusting block 152, a second adjusting block 154 is rotatably provided on the outer periphery of the second connecting frame 153, a connecting rod 155 is installed on the second adjusting block 154, and a corresponding welding gun 26 is installed on the end of the connecting rod 155. Through such a mounting structure, not only can the welding gun 26 be installed, but also the position and the direction of the welding nozzle of the correspondingly installed welding gun 26, that is, the welding angle of the welding gun 26 can be adjusted through the corresponding connecting frame and the adjusting block. In this way, before the welding operation is performed, the welding direction of the corresponding welding gun 26 is adjusted according to the welding point position of the annular workpiece, and then the welding point of each annular workpiece is limited to the welding position through the limit block 18, and it is not necessary to focus the welding point of the welded annular workpiece every time, which is simple to operate, has better welding efficiency, and more accurate welding position.

[0021] The above-mentioned working platform 11 is provided with a controller, through which parameter values ​​or parameter value ranges can be set, and the clamping cylinder 13, the limit cylinder 17 and the limit cylinder 17 are controlled to operate in coordination with the set parameter values ​​or parameter value ranges.

[0022] Therefore, the high-precision welding machine applied to the annular workpiece of the present invention can focus the welding point of the connecting end of the annular workpiece accurately and quickly, and can adjust the angle of the welding gun 26 according to the annular workpieces of different specifications by installing the bracket 15, so that the connecting end of the annular workpiece can be intelligently welded with high precision, and the welding efficiency is high. It can not only effectively improve the welding quality of the annular workpiece, but also will not cause harm to human eyes during operation, and the safety is higher. As a specific implementation, a laser emitter 21 is installed at the end of the welding gun 26, and a light-through groove 261 is formed on the shell of the welding gun 26. The light-through groove 261 can be used for the light emitted by the laser generator to irradiate the welding point, so as to achieve rapid focusing of the welding gun 26 and the welding point, which is convenient to operate and improves the welding accuracy. A light angle detection sensor 20 is installed above the limit stopper 18. The light angle detection sensor 20 is arranged opposite to the welding point of the annular workpiece, and the laser emitter 21 and the light angle detection sensor 20 are both connected to the controller for communication. In this way, the controller calculates the angle between the laser emitted by the laser generator detected by the light angle detection sensor 20 and the plane where the welding point is located, and can accurately calculate whether the welding direction of the welding gun 26 meets the requirements and whether it is within the preset value of the welding direction requirements. Through this technology, it is possible to effectively avoid the welding angle of the welding gun 26 being tilted too much, resulting in insufficient or uneven welding temperature, thereby affecting the welding quality. The controller is electrically equipped with an alarm, which sounds an alarm when the detection value of the light angle detection sensor 20 exceeds the preset value (the welding angle is too tilted), reminding the user to adjust the angle of the welding gun 26. The housing of the light angle detection sensor 20 is a transparent housing that can transmit laser light, so that the laser emitted by the laser emitter 21 is not blocked, so the welding point of the welding gun 26 can be focused without moving the light angle detection sensor 20 back and forth.

[0023] Specifically, the limit stopper 18 is slidably provided with a slide bar 19, and the slide bar 19 is formed with a slide groove 191, and the light angle detection sensor 20 is slidably set in the slide groove 191. A first distance sensor 21 is provided at the bottom end of the light angle detection sensor 20, and the first distance sensor 21 is communicatively connected to the controller. In this way, the first distance sensor 21 can detect the distance between the light angle detection sensor 20 and the welding point, and then the controller can calculate the actual slope of the laser according to the distance, thereby more accurately detecting the direction of the welding nozzle of the welding gun 26.

[0024] The first distance sensor 21 is a laser radar that can emit laser and detect distance. In this way, it can not only detect the distance between the light angle detection sensor 20 and the welding point, but also accurately and quickly move the light angle detection sensor 20 to the top of the welding point through laser, thereby improving the efficiency and accuracy of the welding gun 26 focusing on the welding point.

[0025] As a specific embodiment, the stopper 18 is L-shaped, and the L-shaped recess formed by the stopper 18 abuts against the welding position of the annular workpiece. The slide bar 19 is arranged above the L-shaped recess. In this way, while accurately defining the welding point position of the annular workpiece, the position of the light angle detection sensor 20 can be adjusted according to the detection value of the first distance sensor 21, and the welding direction of the welding gun 26 can be adjusted according to the detection values ​​of the laser emitter 21 and the light angle detection sensor 20.

[0026] Furthermore, the first adjustment block 152 and the second adjustment block 154 are both provided with a second distance sensor 22 for detecting their moving distances and an angle sensor 24 for detecting their rotation directions. The second distance sensor 22 and the angle sensor 24 are communicatively connected to the controller, thereby sending monitoring data to the controller. The controller accurately calculates the corresponding moving distances of the first adjustment block 152 and the second adjustment block 154 according to the detection data of each sensor, thereby being able to quickly adjust the position of the welding gun 26 with higher efficiency.

[0027] As a specific implementation, pressure sensors 25 are symmetrically provided on both sides of the support table 12, and the pressure sensors 25 are electrically connected to the clamping cylinder 13. The clamping block 14 provided at the end of the clamping cylinder 13 is arranged opposite to the corresponding pressure sensor 25. In this way, the clamping force of the clamping cylinder 13 can be controlled by the detection value of the pressure sensor 25, so as to accurately clamp the annular workpiece, avoid the problem of welding position deviation due to insufficient clamping force, or deformation of the annular workpiece due to excessive clamping force, that is, avoid excessive or too small clamping stress, which affects the welding accuracy of the welding point. In other words, deformation of the annular workpiece will also affect the welding quality, for example, the welding position will shift with deformation, or the gap of the welding point will change with deformation, so that it will not match the preset welding time and welding temperature, resulting in inconsistent welding quality.

[0028] As a specific implementation, a baffle 141 is provided on one side of the pressing block 14, and the baffle 141 is used to abut against the outer side of the annular workpiece to limit the axial placement position of the annular workpiece. The baffle 141 is slidably disposed on the pressing block 14, and a micro cylinder 142 is disposed inside the pressing block 14. The baffle 141 is connected to the cylinder rod of the micro cylinder 142, and is driven by the cylinder rod to slide to a preset position to adapt to annular workpieces of different thicknesses, thereby limiting the axial position of annular workpieces of different widths, and having higher versatility.

[0029] As a specific implementation, a third distance sensor 23 for detecting the telescopic distance of the limit stopper 18 is provided at the cylinder end of the limit cylinder 17 to adapt to the welding of annular workpieces of different thicknesses. The detection data of the third distance sensor 23 can accurately limit the welding point, and according to the annular workpieces of different sizes, at the beginning of the welding work of the annular workpieces of the same specification, the welding position is located by a sensor and a laser, and then the telescopic distance parameter set by the third distance sensor 23 is used to accurately control the telescopic distance of the limit stopper 141, so as to accurately limit the welding position of the subsequent annular workpiece to be welded.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A high-precision welding machine for annular workpieces, characterized in that: include: Work platform; The working platform is provided with a support platform for supporting the annular workpiece; Both sides of the support platform are provided with a pressing cylinder for pressing the annular workpiece against the support platform; The working platform is also provided with a plurality of mounting brackets for mounting welding guns and a plurality of driving cylinders for respectively driving the corresponding mounting brackets to move up and down so as to move the corresponding welding guns up and down so as to weld the corresponding positions of the annular workpiece; The working platform is also provided with a limit cylinder; The telescopic end of the limit cylinder is provided with a limit stopper for limiting the welding position of the annular workpiece; The mounting bracket comprises: a first connecting frame; A first adjusting block is rotatably provided on the outer periphery of the first connecting frame; The first adjusting block is provided with a second connecting frame; A second adjusting block is rotatably provided on the outer periphery of the second connecting frame; The second adjusting block is equipped with a connecting rod; The corresponding welding gun is installed at the end of the connecting rod; The working platform is provided with a controller for controlling the pressing cylinder, the limiting cylinder and the limiting cylinder.

2. The high-precision welding machine for annular workpieces according to claim 1, characterized in that: A laser emitter is installed at the end of the welding gun; The housing of the welding gun is formed with a light-through slot for allowing the light emitted by the laser generator to irradiate the welding point; A light angle detection sensor for detecting the angle between the laser emitted by the laser generator and the plane where the welding point is located is installed above the limit stopper; The light angle detection sensor is arranged opposite to the welding point of the annular workpiece; The laser emitter and the light angle detection sensor are both communicatively connected to the controller; The controller is electrically equipped with an alarm for sounding an alarm when the detection value of the light angle detection sensor exceeds a preset value.

3. The high-precision welding machine for annular workpieces according to claim 2, characterized in that: The limit stopper is slidably provided with a slide rod; The light angle detection sensor is slidably disposed in a slide groove formed on the slide rod; A first distance sensor for detecting the distance between the light angle detection sensor and the welding point is provided at the bottom end of the light angle detection sensor; The first distance sensor is communicatively connected to the controller.

4. The high-precision welding machine for annular workpieces according to claim 3, characterized in that: The first distance sensor is a laser radar that can emit laser and detect distance.

5. The high-precision welding machine for annular workpieces according to claim 4, characterized in that: The limit stopper is L-shaped, and the L-shaped recess formed by the limit stopper abuts against the welding position of the annular workpiece; The sliding rod is arranged above the L-shaped recess.

6. The high-precision welding machine for annular workpieces according to claim 3, characterized in that: The first adjusting block and the second adjusting block are both provided with a second distance sensor for detecting the moving distance thereof and an angle sensor for detecting the rotation direction thereof; The second distance sensor and the angle sensor are communicatively connected to the controller.

7. The high-precision welding machine for annular workpieces according to claim 1, characterized in that: Pressure sensors communicatively connected to the controller are symmetrically arranged on both sides of the support platform; The pressing block provided at the end of the pressing cylinder is arranged opposite to the corresponding pressure sensor.

8. The high-precision welding machine for annular workpieces according to claim 7, characterized in that: A baffle is provided on one side of the pressing block for contacting the outer side of the annular workpiece to limit the axial placement position of the annular workpiece; The baffle is slidably disposed on the pressing block; The pressing block is provided with a micro cylinder communicatively connected to the controller; The baffle is connected to the cylinder rod of the micro cylinder and is driven by the cylinder rod to slide to a preset position to adapt to annular workpieces of different widths.

9. The high-precision welding machine for annular workpieces according to claim 1, characterized in that: A third distance sensor is provided at the cylinder end of the limit cylinder and is communicatively connected to the controller for detecting the telescopic distance of the limit stopper to adapt to the welding of annular workpieces of different thicknesses.

10. The high-precision welding machine for annular workpieces according to claim 1, characterized in that: The shell of the light angle detection sensor is a transparent shell that can transmit laser light.

Images