CN213351159U

CN213351159U - Welding device

Info

Publication number: CN213351159U
Application number: CN202022046512.5U
Authority: CN
Inventors: 罗小华
Original assignee: Guangdong Meijie Sanitary Ware Technology Co ltd
Current assignee: Guangdong Meijie Sanitary Ware Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-06-04
Anticipated expiration: 2030-09-17

Abstract

The application is applicable to the technical field of part machining, and provides a welding device which comprises a first clamp holder, a second clamp holder and a welding assembly, wherein the second clamp holder is arranged opposite to the first clamp holder, and the welding assembly is used for welding a workpiece; the first clamping device and the second clamping device can move relatively along the first rotating axis line so as to clamp the workpiece at a position where the central axis of the workpiece is coincident with the first rotating axis line, and the first clamping device and the second clamping device can drive the workpiece to rotate by taking the first rotating axis line as a rotating central axis line; the welding assembly is disposed at one side of the first rotation axis, and the welding assembly is disposed corresponding to a position between the first holder and the second holder. The welding assembly can weld the workpiece clamped between the first clamp and the second clamp; the work piece can be rotatory around first rotation axis under the centre gripping of first holder and second holder and the drive, and the distance between welding assembly and the work piece is invariable among the welding process, and welded stability is good, and welding quality is high.

Description

Welding device

Technical Field

The application relates to the technical field of part machining, in particular to a welding device.

Background

In the process of connecting water and gas pipelines, in order to realize the connection between pipelines with different inner diameters and outer diameters, even different joint shapes, the commonly adopted methods include threaded connection, welding, flange connection, socket connection, cutting sleeve/clamping hoop connection and the like. For small-diameter and short pipeline pipelines used for water delivery, such as water valves for sanitary equipment, the connection by welding is the most common option. Arc welding is one of the most widely used welding methods in industry, and uses an electric arc as a heat source, and utilizes the physical phenomenon of air discharge to convert electric energy into heat energy and mechanical energy required by welding so as to achieve the purpose of connecting metals. The disadvantages of arc welding are also obvious, and besides the high voltage exceeding the human safety voltage, the high temperature, the strong light and the dust which are necessarily accompanied in the air discharge process are potential risk factors which cannot be ignored.

Some conventional schemes propose automatic arc welding machines to keep operators away as far as possible to avoid personal damage to the operators caused by dangerous factors in the welding process. However, in the case of welding a tubular workpiece, the outer peripheral surface of the workpiece to be welded cannot be adjusted in a timely and continuous manner due to the distance of personnel, and therefore, the welding quality of such a tubular workpiece is still poor.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a welding device, and aims to solve the technical problem that the welding quality of a traditional arc welding device is difficult to guarantee when a tubular workpiece is welded.

The application is realized in such a way that a welding device comprises a first clamp, a second clamp arranged opposite to the first clamp, and a welding assembly for welding workpieces; the first gripper and the second gripper can move relatively along a first rotation axis to grip the workpiece at a position where the central axis of the workpiece coincides with the first rotation axis, and the first gripper and the second gripper can drive the workpiece to rotate by taking the first rotation axis as a rotation central axis; the welding assembly is disposed at one side of the first rotation axis, and the welding assembly is disposed corresponding to a position between the first holder and the second holder.

In one embodiment of the present application, the welding device further comprises a table assembly comprising a table top, and first and second supports disposed on the table top; the welding device further comprises a first driver and a second driver, the first driver is used for driving the first clamping device to rotate around the first rotating axis, the second driver is connected with the first support and used for driving the second clamping device to move along the first rotating axis, and the welding assembly is connected with the second support.

In one embodiment of the present application, the first driver includes a first motor having a rotor with the first rotation axis as a rotation center axis; the second drive includes a first cylinder having a piston that is extendable and retractable in a direction parallel to the first axis of rotation.

In one embodiment of the application, the first gripper comprises a transmission member connected to the rotor, and a jaw arranged coaxially with the rotor and connected to the transmission member for securing an end of the workpiece remote from the second gripper.

In one embodiment of the application, the first clamping device comprises a transmission part connected with the rotor, and a fixing frame connected with the transmission part, wherein the fixing frame can allow one end of the workpiece far away from the second clamping device to penetrate through and clamp and fix the workpiece at a processing position.

In one embodiment of the present application, the welding assembly includes a slide rail movably connected to the second support, a welding gun holder movably connected to the slide rail, and a welding gun fixedly connected to the welding gun holder.

In one embodiment of the present application, the second holder includes an abutment member, and one end of the abutment member facing the first holder is provided with a stopper portion capable of holding the workpiece at a position where its own central axis coincides with the first rotation axis line.

In one embodiment of the application, the welding device further comprises a shielding gas assembly for delivering shielding gas to the workpiece, the shielding gas assembly comprising a shielding gas cylinder filled with high-pressure shielding gas, and a shielding gas pipe connected to the shielding gas cylinder.

In one embodiment of the present application, the welding device further comprises a display assembly, the display assembly comprising a camera disposed just opposite to the workpiece, and a display in signal connection with the camera.

In an embodiment of the application, the welding set still includes the controller, the controller with welding subassembly signal connection, the controller has start button and insurance button, start button is used for controlling welding subassembly starts, insurance button is used for when start button is touched by mistake avoids welding subassembly unexpected the starting.

The welding device provided by any embodiment of the application has at least the following beneficial effects:

through setting up first holder and the second holder that can rotate around first rotation axis relative rotation and make relative movement along first rotation axis, it rotates as rotation central axis to drive the work piece and use its self central axis, and carry out the butt fixedly to the both sides of work piece on the extending direction of self central axis, make the work piece by the centre gripping on its self central axis and the position of first rotation axis line coincidence and around first rotation axis line rotation, set up welding assembly in the side of first rotation axis, welding assembly can be to welding its periphery at the rotatory in-process of work piece, can make the distance between welding assembly and the work piece outer peripheral face invariable among the welding process, the stability of welding has been improved, better welding quality has, and simultaneously, welding efficiency has still been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a welding apparatus provided in one embodiment of the present application;

fig. 2 is a schematic view of another angle of the welding device according to an embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

11-a first gripper; 111-a transmission member; 112-a fixing frame; 12-a second gripper; 121-an abutment; 2-welding the assembly; 21-a slide rail; 22-a welding gun rack; 23-a welding gun; 31-a work table; 32-a first bracket; 33-a second scaffold; 41-a first motor; 42-a first cylinder; 51-a display; 6-workpiece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Referring to fig. 1 and 2, an embodiment of the present application provides a welding apparatus including a first holder 11, a second holder 12 disposed opposite to the first holder 11, and a welding assembly 2 for welding a workpiece 6; the first gripper 11 and the second gripper 12 can move relatively along the first rotation axis to abut and fix the workpiece 6 from two opposite sides, so that the central axis of the workpiece 6 coincides with the first rotation axis, and the first gripper 11 and the second gripper 12 can also rotate relatively around the first rotation axis to drive the workpiece 6 to rotate by taking the first rotation axis as the rotation central axis; the welding modules 2 are disposed at intervals on one side of the first rotation axis, and the welding modules 2 are disposed corresponding to positions between the first holder 11 and the second holder 12.

In the present embodiment, the first gripper 11 may be configured to firmly grip the workpiece 6 and rotate the workpiece 6 about the first rotation axis as the rotation center axis (the second gripper 12 may be configured to firmly grip the workpiece 6 and rotate the workpiece 6 about the first rotation axis as the rotation center axis, or may be configured not to rotate with respect to the first rotation axis), and the second gripper 12 may be configured to move along the first rotation axis and abut against the workpiece 6 (the second gripper 12 may be configured to move along the first rotation axis, or may be configured not to move along the first rotation axis). The welding unit 2 is disposed on one side of the first rotation axis and at a position corresponding to a position between the first holder 11 and the second holder 12, and can weld the circumferential surface of the workpiece 6 while the workpiece 6 is rotated about the first rotation axis as the rotation center axis. The present embodiment provides a welding apparatus that enables the distance between the welding assembly 2 and the workpiece 6 to be constant during the rotation of the workpiece 6. This is particularly suitable for a work 6 having a tubular shape or a work 6 having a tubular shape at least at an end near the second holder 12, and ensures uniformity of welding of the circumferential surface of the work 6 while improving welding efficiency. Of course, in this embodiment, the workpiece 6 is described as being at least partially tubular, but in other alternative embodiments, the workpiece 6 may not be tubular, but may be at least partially cylindrical, and any workpiece 6 whose outer peripheral surface needs to be welded may be suitable for this.

The welding device provided by the embodiment at least has the following beneficial technical effects:

through setting up first holder 11 and the second holder 12 that can rotate around first rotation axis relative rotation and make relative movement along first rotation axis, it rotates as rotation central axis to drive work piece 6, and carry out the butt on the both sides of work piece 6 on the extending direction of self central axis and fix, make work piece 6 by the centre gripping on its self central axis and the position of first rotation axis coincidence and revolve around first rotation axis line, set up welding assembly 2 in the side of first rotation axis, welding assembly 2 can weld its periphery at the rotatory in-process of work piece 6, can make the distance between welding assembly 2 and the work piece 6 periphery invariable among the welding process, the stability of welding has been improved, better welding quality has, and simultaneously, welding efficiency has still been improved.

In this embodiment, the first clamper 11 is configured to drive the workpiece 6 to rotate with the first rotation axis as the rotation central axis; the second gripper 12 is configured to be movable along the first axis of rotation and to abut the workpiece 6.

Referring to fig. 1 and 2, in one embodiment of the present application, the welding device further includes a work table assembly including a work table 31, and a first bracket 32 and a second bracket 33 disposed on the same side of the work table 31; the welding device further comprises a first driver and a second driver, the first driver is connected with the working table 31 and fixed on the working table 31, and optionally, the first clamper 11 is arranged on one side of the working table 31 where the first bracket 32 is arranged; the first gripper 11 is in driving connection with a first drive. The second clamper 12 is in transmission connection with a second driver, and the second driver is connected with the first bracket 32 and fixed on the first bracket 32; the welding module 2 is connected to the second frame 33 and supported by the second frame 33, so that the first driver, the second driver and the welding module 2 can be arranged at proper positions and the respective functions can be implemented conveniently.

As a specific aspect of the present embodiment, the first driver is configured to drive the first clamper 11 to rotate around the first rotation axis; the second drive is used for driving the second gripper 12 to move along the first rotation axis; the second support 33 is used to bridge the welding assembly 2 laterally of the first axis of rotation and corresponds to a position between the first gripper 11 and the second gripper 12.

The work surface 31 may be arranged above the ground, and the first holder 11, the second holder 12 and the welding assembly 2 may be arranged on a side of the work surface 31 facing away from the ground, i.e. on an upper surface of the work surface 31. Alternatively, the first support 32 and/or the second support 33 may extend through the work table 31 and then extend toward the side (lower side) of the work table 31 facing the ground, so as to support the work table 31 via the first support 32 and/or the second support 33.

Referring to fig. 1 and 2, in one embodiment of the present application, the first driver includes a first motor 41, the first motor 41 having a rotor rotating about a first rotation axis (a rotation center axis of the rotor coincides with the first rotation axis); the second drive comprises a first cylinder 42, the first cylinder 42 having a piston arranged parallel to the first axis of rotation and extending and retracting. Thus, the first motor 41 can drive the first clamper 11 to rotate around the first rotation axis as the rotation central axis, so as to drive the workpiece 6 to rotate around the first rotation axis as the rotation central axis, so that the welding assembly 2 can weld the workpiece 6 from different angles; the second clamping device 12 is connected to the first support 32 through a piston of the first air cylinder 42, and the extension and contraction of the piston of the first air cylinder 42 can be used for driving the second clamping device 12 to move along the first rotation axis, so that the first clamping device 11 and the second clamping device 12 can jointly clamp the workpiece 6, and the stability of the position and the posture of the workpiece 6 in the welding process is improved.

As a specific solution of this embodiment, the first motor 41 is disposed on the upper surface of the work bench 31, so that the first motor 41 can be easily repaired from above the work bench 31 when the first motor 41 is abnormally operated.

As a specific scheme of this embodiment, the first motor 41 is a stepping motor, which has strong controllability, and can implement program-controlled welding under the control of the upper computer, which is beneficial to improving the automation degree of the welding device.

In one embodiment of the application, the first gripper 11 comprises a transmission piece 111 connected to the rotor, and a pawl arranged coaxially with the rotor and connected to the transmission piece 111. The rotor of the first motor 541 of the transmission member 111 is connected to and used for bearing the claw, the rotor can drive the transmission member 111 to rotate, for example, the transmission member may be provided with a D-shaped hole, a kidney-shaped hole or a hexagonal hole, and the rotor is provided with a structure corresponding to the D-shaped hole, the kidney-shaped hole or the hexagonal hole of the transmission member, so as to transmit the rotation torque to the transmission member 111. The jaws are capable of gripping the workpiece 6 and are rotatable about the first axis of rotation as a central axis in synchronism with the workpiece 6. The clamping jaw is suitable for the condition that one end of the workpiece 6, far away from the end to be welded, is in a regular shape, and if the whole workpiece 6 is in a straight cylinder shape, the clamping jaw can directly clamp and release the end, far away from the end to be welded, of the workpiece 6 in an opening and closing mode.

Referring to fig. 1 and 2, as a possible solution, in one embodiment of the present application, the first gripper 11 includes a transmission member 111 connected to the rotor, and a fixing frame 112 connected to the transmission member 111, and the fixing frame 112 and the transmission member 111 can grip and fix the workpiece 6 at the machining station from different positions of the workpiece 6. In the case where the portion of the workpiece 6 to be welded is tubular, but the workpiece 6 has a complex shape as a whole, the first motor 41 can hold the workpiece 6 by the holder 112 and rotate the workpiece 6 about the first rotation axis.

Further, the second holder 12 may be configured to fix the end of the workpiece 6 having a tubular shape, i.e., the end to be welded, by specifically setting the shape of the fixing frame 112 and the position where the fixing frame 112 is connected to the workpiece 6, the axis of the tubular portion of the workpiece 6 may be made to coincide with the first rotation axis, so that the distance between the welding assembly 2 and the workpiece 6 during welding can be made constant to improve the welding quality of the welding apparatus. As shown in fig. 2, the end of the workpiece 6 close to the first motor 41 is irregular, and the workpiece 6 can pass through the fixing frame 112 such that the portion to be welded is exposed, thereby facilitating the fixing and welding of the workpiece 6.

Referring to fig. 1 and 2, in an embodiment of the present application, the second holder 12 includes an abutting member 121 connected to the piston, and an end of the abutting member 121 away from the piston (i.e., an end facing the first holder 11) is provided with a limiting portion capable of holding the workpiece 6 at a position where a central axis thereof coincides with the first rotation axis.

As a specific aspect of the present embodiment, the limiting portion may be tapered, such as conical or quadrangular pyramid, and the conical surface of the conical limiting portion is formed around the first rotation axis by a generatrix; the limiting part can also be in a frustum shape, such as a circular truncated cone shape or a quadrangular frustum cone shape, and the side surface of the circular truncated cone-shaped limiting part is formed around the first rotating axis through a bus. This has the advantage that, for a tubular workpiece 6, or for a workpiece 6 having a tubular portion, the limiting portion can extend into the inside of the workpiece 6 and achieve the limiting of the workpiece 6, the workpiece 6 can be mounted on the welding assembly 2 conveniently and quickly, and the limiting portion can be adapted to workpieces 6 of various inner diameter specifications.

Referring to fig. 1 and 2, in one embodiment of the present application, the welding assembly 2 includes a rail 21 movably connected to the second bracket 33, a gun carriage 22 movably connected to the rail 21, and a welding gun 23 fixedly connected to the gun carriage 22. Specifically, the slide rail 21 can rotate about the second bracket 33 to adjust the welding gun 23 to a direction facing the workpiece 6; the slide rail 21 can also move up and down along the second bracket 33 to adjust the height of the welding gun 23; the welding gun 23 is movable along the slide rail 21 in a direction perpendicular to the first rotation axis to adjust the distance between the welding gun 23 and the workpiece 6.

Preferably, the second support 33 is in the shape of a circular rod, which is parallel to and spaced apart from the first rotation axis, and the workpiece 6 can be welded at different height positions of the workpiece 6 only by moving the slide rail 21 along the second support 33.

Further, in some embodiments of the present application, the welding device further comprises a second motor to control the rotation of the welding assembly 2 about the second support 33.

Further, the welding apparatus further includes a third motor to control the up and down movement of the welding assembly 2 along the second carriage 33.

In one embodiment of the present application, the welding apparatus further comprises a shielding gas assembly (not shown) for delivering shielding gas to the workpiece 6, the shielding gas assembly comprising a shielding gas cylinder filled with high pressure shielding gas, and a shielding gas pipe connecting the shielding gas cylinder and the welding gun carrier 22; the protective gas pipe is used for conveying the protective gas in the protective gas cylinder to the workpiece 6.

In the present embodiment, the welding gun 23 is an arc welding gun; the protective gas pipe can convey the protective gas to the welding point from the protective gas cylinder, and the surface of the workpiece 6 is prevented from being oxidized due to the high temperature generated by the electric arc. Preferably, the end of the shield gas pipe remote from the shield gas cylinder is connected to the slide rail 21 and is disposed opposite to the discharge tip of the arc welding gun 23, so that the shield gas pipe always delivers the shield gas to the position where the workpiece 6 is welded regardless of the position and direction of the arc welding gun 23, without readjusting the position of the shield gas pipe after adjusting the position of the arc welding gun 23.

Referring to fig. 1, in one embodiment of the present application, the welding apparatus further includes a display assembly including a camera (not shown) disposed opposite to the workpiece 6, and a display 51 in signal connection with the camera. By arranging the camera facing the workpiece 6 and the display 51 in signal connection with the camera, the situation that an operator directly watches welding with naked eyes can be avoided, and strong light generated by arc welding is prevented from damaging the eyesight of the operator; meanwhile, the corresponding lens can be arranged to improve the magnification of the display 51 on the display of the welding point, so that an operator can conveniently evaluate the welding effect and repair welding in time under the condition of poor welding effect, and the welding quality is improved.

In one embodiment of the application, the welding device further comprises a controller (not shown in the figure) in signal connection with the welding assembly 2, the controller having a start button for controlling the start of the welding assembly 2 and an safety button for avoiding an accidental start of the welding assembly 2 when the start button is touched by mistake.

The start button and the safety button can respectively control two switches which are connected in series, and can also respectively control the level of two input ends of the same AND gate circuit. Through setting up the safety button, can avoid operating personnel mistake to touch start button and lead to welding assembly 2 unexpected start-up, improve welding set's security. Preferably, the safety button and the start button are arranged at intervals, or the controller is also provided with an emergency stop button arranged between the safety button and the start button so as to further improve the safety of the welding device.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A welding device is characterized by comprising a first clamp, a second clamp arranged opposite to the first clamp, and a welding component for welding workpieces; the first gripper and the second gripper can move relatively along a first rotation axis to grip the workpiece at a position where the central axis of the workpiece coincides with the first rotation axis, and the first gripper and the second gripper can drive the workpiece to rotate by taking the first rotation axis as a rotation central axis; the welding assembly is disposed at one side of the first rotation axis, and the welding assembly is disposed corresponding to a position between the first holder and the second holder.

2. The welding device of claim 1, further comprising a table assembly comprising a table top, and first and second brackets disposed on the table top; the welding device further comprises a first driver and a second driver, the first driver is used for driving the first clamping device to rotate around the first rotating axis, the second driver is connected with the first support and used for driving the second clamping device to move along the first rotating axis, and the welding assembly is connected with the second support.

3. The welding device of claim 2, wherein the first drive comprises a first motor having a rotor with a central axis of rotation about the first axis of rotation; the second drive includes a first cylinder having a piston that is extendable and retractable in a direction parallel to the first axis of rotation.

4. A welding device as claimed in claim 3, wherein said first holder comprises a drive member connected to said rotor, and a jaw arranged coaxially with said rotor and connected to said drive member for securing an end of said workpiece remote from said second holder.

5. The welding device of claim 3, wherein said first clamp includes a drive member coupled to said rotor, and a mount coupled to said drive member, said mount being capable of allowing an end of said workpiece remote from said second clamp to pass therethrough and clamp and secure said workpiece at a processing station.

6. The welding device of claim 2, wherein the welding assembly comprises a slide rail movably coupled to the second support, a torch frame movably coupled to the slide rail, and a welding torch fixedly coupled to the torch frame.

7. The welding device according to any one of claims 1 to 6, characterized in that the second holder includes an abutment member, an end of which facing the first holder is provided with a stopper portion capable of holding the workpiece at a position where a center axis thereof coincides with the first rotation axis.

8. The welding device of any one of claims 1 to 6, further comprising a shielding gas assembly for delivering shielding gas to the workpiece, the shielding gas assembly comprising a shielding gas cylinder filled with high pressure shielding gas, and a shielding gas pipe connecting the shielding gas cylinder.

9. The welding device of any of the claims 1 to 6, further comprising a display assembly comprising a camera disposed opposite the workpiece and a display in signal communication with the camera.

10. The welding device of any one of claims 1 to 6, further comprising a controller in signal communication with the welding assembly, the controller having a start button for controlling the start of the welding assembly and a safety button for preventing accidental start of the welding assembly when the start button is mistouched.