CN106514079A - A four-axis displacement welding machine - Google Patents

Abstract

The invention discloses a four-axis deflection welding machine, which comprises: a frame; the first base is arranged on the rack in a sliding manner and can move back and forth relative to the rack by being driven by a first driving device; the workpiece clamp is pivoted on the first base through a first pivoting shaft parallel to the left-right direction and can rotate around the first pivoting shaft by being driven by a second driving device; the second base is arranged on the rack in a sliding manner and can move left and right relative to the rack under the drive of a third drive device; and the welding gun is arranged on the second base in a sliding way and can move up and down relative to the second base by being driven by a fourth driving device. The automatic continuous welding machine can automatically and continuously weld the welding parts on a plurality of different surfaces of the workpiece, does not need workers to frequently disassemble and assemble the workpiece, does not need to arrange different workpiece clamps corresponding to different installation modes of the workpiece, is flexible and convenient to use, effectively reduces the labor intensity of the workers, improves the production efficiency and improves the product quality.

Description

A four-axis displacement welding machine

technical field

The invention relates to a welding device.

Background technique

Welding operations are often performed during industrial processing, and now most of the welding operations are usually performed manually by workers, which has low efficiency, high labor intensity, and it is difficult to guarantee the welding quality. There are also some automatic welding machines that drive the welding torch or workpiece movement through the traveling mechanism to realize automatic welding. However, the welding torch and/or workpiece of these automatic welding machines can usually only move in the XYZ three-axis direction, and it is difficult to control the number of workpieces. Therefore, workers need to manually disassemble and assemble the workpiece from the fixture many times. The operation is cumbersome, and the welding operation cannot be continued, which will affect the quality of the product. In addition, when welding each surface of the workpiece, the workpiece will be damaged The position of the clamping will change accordingly, so it is often necessary to replace a variety of different clamps or use multiple automatic welding machines to weld each welding point separately, and the equipment cost is high; there are also some automatic welding machines that can cooperate with the action of the walking mechanism To weld the transverse surface, longitudinal surface and inclined surface of the workpiece, however, the angle between the welding torch and the workpiece will change when welding the surfaces in different directions, which will affect the welding quality.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a four-axis displacement welding machine that can continuously weld multiple surfaces of a workpiece and is easy to use.

The technical scheme that the present invention adopts for solving its technical problem is:

A four-axis displacement welding machine, comprising:

a rack;

A first base is slidably arranged on the frame and driven by a first driving device so as to move back and forth relative to the frame;

A workpiece clamp is pivotally arranged on the first base through a first pivot shaft parallel to the left-right direction and is driven by a second driving device to rotate around the first pivot shaft, and the workpiece can be fixed on the workpiece clamp superior;

A second base is slidably arranged on the frame and driven by a third driving device so as to move left and right relative to the frame;

A welding torch is slidably arranged on the second base and driven by a fourth drive device so as to move up and down relative to the second base. The welding torch is used for welding the workpiece fixed on the workpiece fixture.

Preferably, the first base is slidably arranged on the frame through a first slide rail mechanism, the second base is slidably arranged on the frame through a second slide rail structure, and the welding gun passes through A third slide rail mechanism is slidably arranged on the second base; the first slide rail mechanism, the second slide rail mechanism and the third slide rail mechanism are cylindrical slide rail mechanisms or dovetail slide rail mechanisms or linear ball guide rails mechanism.

Preferably, the first driving device drives the first base to move back and forth through a first screw transmission mechanism, and the second driving device drives the workpiece holder to rotate around the first pivot shaft through a synchronous belt transmission mechanism, The third drive device drives the second base to move left and right through a second screw drive mechanism, and the fourth drive device drives the welding torch to move up and down through a third screw drive mechanism; the first drive device , The second driving device, the third driving device and the fourth driving device are all servo motors.

Preferably, a controller adapted to the first drive device, the second drive device, the third drive device and the fourth drive device is also provided on the frame.

Preferably, it also includes a welding torch seat and a welding torch clamp arranged on the welding torch seat, the welding torch seat is slidably arranged on the second base and driven by the fourth driving device so as to be able to move relative to the second base Moving up and down, the welding torch is detachably fixed on the welding torch fixture.

Preferably, the welding torch clamp is rotatably pivoted on the welding torch seat through a second pivot shaft parallel to the left-right direction and fixed on the welding torch seat by an unlockable locking device.

Preferably, a plurality of first positioning holes are provided on the welding torch base around the second pivot shaft, and a second positioning hole matching the first positioning holes is provided on the welding torch clamp. With the rotation of the second pivot shaft, the second positioning hole can be aligned with and communicated with one of the second positioning holes.

Preferably, the described welding torch fixture or welding torch is also provided with an automatic wire feeding head compatible with the welding torch; it also includes an electric welding device compatible with the welding torch and the automatic wire feeding head A suitable automatic wire feeding device.

Preferably, the welding torch holder or the welding torch is further provided with a light-shielding lens, and the light-shielding lens shields the front of the head of the welding torch.

Preferably, the workpiece fixture includes a fixture seat and at least one fixture head adapted to the fixture seat, and the fixture head is movably arranged on the fixture seat or the first base through a self-locking linkage mechanism , when the self-locking link mechanism is driven by external force and moves to the self-locking state, the fixture seat and the fixture head can clamp the workpiece together to fix the workpiece on the workpiece fixture.

The beneficial effects of the present invention are: because the workpiece in the present invention can be fixed on the workpiece fixture and can automatically move back and forth with the workpiece fixture and rotate around the first pivot shaft, the welding torch can move left and right and up and down, thus enabling the welding torch to be on the workpiece The welding parts on multiple different surfaces are automatically welded continuously, and there is no need for workers to frequently disassemble and assemble workpieces, and it is not necessary to set different workpiece fixtures corresponding to different installation methods of workpieces. It is flexible and convenient to use, effectively reducing the labor intensity of workers and improving the productivity. Production efficiency, but also improve the quality of products.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is an overall structural diagram of the present invention;

Fig. 2 is a partial enlarged view of part A in Fig. 1;

Fig. 3 is the structure diagram of the present invention after the electric welding device, automatic wire feeding device and part of the frame are removed;

Fig. 4 is the exploded structural diagram of welding torch part in the present invention;

Fig. 5 is a partially enlarged view of part B in Fig. 4;

Fig. 6 is a structural view of the workpiece fixture part in the present invention.

detailed description

Referring to Fig. 1 to Fig. 6, a frame 10, a first base 20, is slidably arranged on the frame 10 and is driven by a first driving device 21 and can move back and forth relative to the frame 10; A first pivot shaft 31 parallel to the left-right direction is pivotally arranged on the first base 20 and is driven by a second driving device 32 to rotate around the first pivot shaft 31, and the workpiece 60 can be fixed on the workpiece fixture 30; a second base 40, which is slidably arranged on the frame 10 and driven by a third driving device 41 and can move left and right relative to the frame 10; a welding torch 51, which is slidably arranged on the second pedestal 40 and is driven by A fourth driving device 52 is driven to move up and down relative to the second base 40 , and the welding torch 51 is used for welding the workpiece 60 fixed on the workpiece holder 30 . Because the workpiece 60 in the present invention can be fixed on the workpiece holder 30 and can automatically move back and forth with the workpiece holder 30 and rotate around the first pivot shaft 31, the welding torch 51 can then move left and right and up and down, so that the welding torch 51 can be on the workpiece 60 The welding parts on multiple different surfaces are automatically and continuously welded, without the need for workers to frequently disassemble and assemble the workpiece 60, and it is not necessary to set different workpiece fixtures 30 corresponding to different installation methods of the workpiece 60, which is flexible and convenient to use, and effectively reduces the labor intensity of workers , Improve production efficiency, but also improve product quality.

The first base 20 is slidably arranged on the frame 10 through a first slide rail mechanism 22, the second base 40 is slidably arranged on the frame 10 through a second slide rail mechanism, and the welding torch 51 is slidably arranged on the frame 10 through a third slide rail mechanism. 53 is slidably arranged on the second base 40; the first slide rail mechanism 22, the second slide rail mechanism 42 and the third slide rail mechanism 53 are cylindrical slide rail mechanisms or dovetail slide rail mechanisms or linear ball guide rail mechanisms, which can ensure The smoothness of the movement of the first base 20, the second base 40, and the welding torch 51 prevents the offset and misalignment of the welding torch 51 and the workpiece 60, and ensures product quality. Cylindrical slide mechanism, dovetail slide mechanism and linear ball guide mechanism It is widely used in this field, can realize high-precision motion, and can bear a certain radial load. Its structure and principle are well known to those skilled in the art, and will not be described in detail here.

The first drive device 21 drives the first base 20 to move back and forth through a first screw drive mechanism 23, the second drive device 32 drives the workpiece holder 30 to rotate around the first pivot shaft 31 through a synchronous belt drive mechanism 33, and the third The drive device 41 drives the second base 40 to move left and right through a second screw drive mechanism 43, and the fourth drive device 52 drives the welding torch 51 to move up and down through a third screw drive mechanism 54; the first drive device 21, the second drive The device 32, the third driving device 41 and the fourth driving device 52 are all servo motors, thereby enabling precise control of the movement of the workpiece 60 and the welding torch 51, thereby ensuring accurate welding positions, preventing welding misalignment, and improving product quality. The frame 10 is also provided with a controller 15 compatible with the first driving device 21, the second driving device 32, the third driving device 41 and the fourth driving device 52, so as to facilitate the movement of the workpiece 60 and the welding torch 51. Control, of course, in practical applications, it can also be controlled by using an external control device. The controller 15 is widely used in this field, and will not be described in detail here. In practical applications, the controller 15 can also be combined with It can be used in conjunction with sensing devices such as position sensors.

Referring to Fig. 1 to Fig. 5, the present invention also includes a welding torch seat 55 and a welding torch clamp 56 arranged on the welding torch seat 55, the welding torch seat 55 is slidably arranged on the second base 40 and is driven by the fourth driving device 52. It can move up and down relative to the second base 40, and the welding torch 51 is detachably fixed on the welding torch holder 56, which facilitates disassembly and replacement of the welding torch 51 to meet different welding requirements, and is more flexible and convenient to use. Of course, in practical applications, the welding torch 51 It can also be installed on the second base 40 directly and slidably up and down.

The welding gun clamp 56 is rotatably pivoted on the welding torch seat 55 through a second pivot shaft 57 parallel to the left-right direction and fixed on the welding torch seat 55 by an unlockable locking device. It is convenient to adjust the orientation of the welding torch 51 to adapt to different welding requirements. The welding torch seat 55 is provided with a plurality of first positioning holes 551 around the second pivot shaft 57, and the welding torch clamp 56 is provided with a second positioning hole 561 matched with the first positioning holes 551. With the rotation of the two pivot shafts 57, the second positioning hole 561 can be aligned with and communicated with one of the second positioning holes 561. Each of the first positioning holes 551 can be preset to correspond to different orientations of the welding torch 51. When the lock is released When adjusting the orientation of the welding torch 51 by using the tightening device, tools such as bolts can be inserted into the first positioning hole 551 and the second positioning hole 561 at the same time to accurately position the welding torch clamp 56, and then use the locking device to fix the welding torch The jig 56 is enough, which is convenient to operate, and can also ensure the accuracy of the adjustment of the orientation of the welding torch 51 . The locking device in this embodiment is a locking screw 58 screwed on the torch seat 55. This embodiment also utilizes the rod of the locking screw 58 as the second pivot shaft 57. Of course, in practical applications , the locking device can also use other common structures such as pins and buckles, but is not limited thereto.

An automatic wire feed head 591 adapted to the welding torch 51 is also provided on the welding torch clamp 56 or the welding torch 51; The wire feeding device 12 can automatically and continuously supply welding wire for the welding torch 51 to carry out continuous welding to the workpiece 60, effectively reducing the labor intensity of workers and improving production efficiency. In this embodiment, the electric welding device 11 and the automatic wire feeding device 12 is separately arranged outside the frame 10, of course, in practical application, the electric welding device 11 and the automatic wire feeding device 12 can also be arranged on the frame 10. The automatic wire feeding head 591 , the electric welding device 11 and the automatic wire feeding device 12 are widely used in this field, and their structures and principles are well known to those skilled in the art, and will not be described in detail here.

A shading lens 592 is also arranged on the welding torch clamp 56 or the welding torch 51, and the shading lens 592 is blocked in front of the head of the welding torch 51, which can prevent the strong light generated in the welding process from damaging the operator's vision on the one hand, and on the other hand It is also convenient for the operator to observe the welding state.

Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 6, the workpiece fixture 30 includes a fixture seat 34 and at least one fixture head 35 adapted to the fixture seat 34, and the fixture head 35 moves through a self-locking linkage mechanism 36 Set on the fixture seat 34 or the first base 20, when the self-locking link mechanism 36 is driven by external force and moves to the self-locking state, the fixture seat 34 and the fixture head 35 can clamp the workpiece 60 together to fix the workpiece 60 on the workpiece On the clamp 30, the self-locking link mechanism 36 can be easily locked and unlocked, easy to operate and use, can effectively shorten the loading and unloading time, and improve production efficiency. The self-locking link mechanism 36 is widely used in this field. The structure and principle are well known to those skilled in the art, and there are many different forms and structures, which can be flexibly selected in practical applications, and will not be described in detail here.

An alarm 16 is also arranged on the frame 10, which is used to send a warning signal when a fault occurs so that the operator can remove the fault in time. The bottom of the frame 10 is provided with castors 13 and telescopic legs 14, which is convenient for the welding machine to be moved and fixed.

The above descriptions are only the preferred implementation modes of the present invention, as long as the technical solutions to achieve the purpose of the present invention by basically the same means fall within the scope of protection of the present invention.

Claims (10)

1. A four-axis displacement welding machine, characterized in that it comprises: a rack (10); A first base (20), which is slidably arranged on the frame (10) and driven by a first driving device (21) to move back and forth relative to the frame (10); A workpiece fixture (30), pivoted on the first base (20) through a first pivot shaft (31) parallel to the left-right direction and driven by a second drive device (32), can rotate around the first The pivot shaft (31) rotates, and the workpiece (60) can be fixed on the workpiece fixture (30); A second base (40), which is slidably arranged on the frame (10) and driven by a third driving device (41) to move left and right relative to the frame (10); A welding torch (51), which is slidably arranged on the second base (40) and driven by a fourth driving device (52) to move up and down relative to the second base (40), the welding torch (51) is used for fixing The workpiece (60) on the workpiece holder (30) is welded. 2. A four-axis displacement welding machine according to claim 1, characterized in that: the first base (20) is slidably arranged on the frame (10) through a first slide rail mechanism (22) Above, the second base (40) is slidably set on the frame (10) through a second slide rail structure, and the welding torch (51) is slidably set on the second pedestal through a third slide rail mechanism (53). On the second base (40); the first slide rail mechanism (22), the second slide rail mechanism (42) and the third slide rail mechanism (53) are cylindrical slide rail mechanisms or dovetail slide rail mechanisms or linear Ball guide mechanism. 3. A four-axis displacement welding machine according to claim 1, characterized in that: the first driving device (21) drives the first base (20) through a first screw drive mechanism (23) ) to move back and forth, the second driving device (32) drives the workpiece fixture (30) to rotate around the first pivot shaft (31) through a synchronous belt transmission mechanism (33), and the third driving device (41) Drive the second base (40) to move left and right through a second screw drive mechanism (43), and the fourth drive device (52) drives the welding torch (51) to move up and down through a third screw drive mechanism (54) ; The first driving device (21), the second driving device (32), the third driving device (41) and the fourth driving device (52) are all servo motors. 4. A four-axis displacement welding machine according to claim 3, characterized in that: the frame (10) is also provided with the first driving device (21), the second driving device (32), A controller (15) adapted to the third driving device (41) and the fourth driving device (52). 5. A four-axis displacement welding machine according to claim 1, characterized in that it further comprises a welding torch seat (55) and a welding torch clamp (56) arranged on the welding torch seat (55), said The welding torch seat (55) is slidably arranged on the second base (40) and is driven by the fourth driving device (52) to move up and down relative to the second base (40). The welding torch (51) It is detachably fixed on the welding torch clamp (56). 6. A four-axis displacement welding machine according to claim 5, characterized in that: the welding torch clamp (56) is rotatably pivoted on a second pivot shaft (57) parallel to the left and right directions On the welding torch seat (55) and is fixed on the welding torch seat (55) by an unlockable locking device. 7. A four-axis displacement welding machine according to claim 6, characterized in that several first positioning holes ( 551), a second positioning hole (561) matching the first positioning hole (551) is opened on the welding torch clamp (56), as the welding torch clamp (56) rotates around the second pivot shaft (57) The rotation of the second positioning hole (561) can be aligned with and communicated with one of the second positioning holes (561). 8. A four-axis displacement welding machine according to claim 5, characterized in that: the welding torch clamp (56) or the welding torch (51) is also provided with a An automatic wire feeder (591); also includes an electric welding device (11) adapted to the welding torch (51) and an automatic wire feeder (12) adapted to the automatic wire feeder (591) ). 9. A four-axis displacement welding machine according to claim 5, characterized in that: the welding torch clamp (56) or the welding torch (51) is also provided with a light-shielding lens (592), the light-shielding lens (592 ) is shielded in front of the head of the welding torch (51). 10. A four-axis displacement welding machine according to claim 1, characterized in that: the workpiece fixture (30) includes a fixture seat (34) and at least A clamp head (35), the clamp head (35) is movably arranged on the clamp seat (34) or the first base (20) through a self-locking linkage mechanism (36), the self-locking linkage When the rod mechanism (36) is driven by external force and moves to the self-locking state, the clamp seat (34) and the clamp head (35) can clamp the workpiece (60) together to fix the workpiece (60) on the workpiece fixture (30).