Driving device of laser welding machine

Abstract

The utility model discloses a laser welding machine driving device which comprises a base, a fixing groove is formed in one side of the base, a rolling bearing is arranged in the fixing groove, a mounting hole is formed in the other side of the base, a rolling bearing is arranged in the mounting hole, a first driving assembly is arranged on the base, and the driving device further comprises a second driving assembly. The second driving assembly is installed on the first driving assembly, the driving device further comprises a third driving assembly and a lifting sliding seat, the third driving assembly is connected with the second driving assembly through the lifting sliding seat, the fourth driving assembly is installed on the third driving assembly, and the fourth driving assembly comprises a rotating shaft, an inner gear, a first servo motor, a connecting shaft and a spur gear. Rotation of the welding gun can be achieved, welding can be achieved only by rotating the angle and moving the driving device when the welding gun faces a workpiece with the side face and the upper surface needing to be welded, meanwhile, the welding gun does not need to move the workpiece when the welding gun faces an arc line or a workpiece with an included angle, and machining time can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a laser welding machine driving device. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts. Most of the current laser welding drive devices can only weld the surface on one side, and cannot weld multiple seams in different positions. In this regard, a laser welding machine drive device is proposed, which can realize three-axis drive and change the angle at the same time to weld various types of seams.

[0003] After searching, the Chinese patent application number 202222979483.7 discloses a driving device for a laser welding machine, including a support plate, a support frame 1 is slidably connected to the support plate along the Y-axis direction, a driving mechanism 1 for driving the support frame 1 to move along the X-axis is arranged on the support plate, a driving mechanism 2 for driving the support frame 1 to move along the X-axis is arranged on the support plate, a support frame 2 for moving along the X-axis is slidably connected to the outer side of the support frame 1, a driving mechanism 3 for driving the support frame 2 to move is arranged on the support frame 1, and a driving mechanism 4 is arranged on the support frame 2. The driving device in the above-mentioned document has the following shortcomings: the device can only weld the side, and the device adopts belt drive. In the face of high-frequency processing of welding, the wear of the belt will be aggravated, resulting in that if the belt is not checked and replaced in time, the moving accuracy of the driving device may be reduced, affecting the welding effect. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a laser welding machine driving device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A laser welding machine driving device comprises a base, wherein a fixing groove is arranged on one side of the base, a rolling bearing is arranged in the groove, a mounting hole is arranged on the other side of the base, a rolling bearing is arranged in the hole, and a first driving component is arranged on the base, wherein the first driving component comprises:

[0007] A screw rod, one end of which is installed in the fixing groove of the base, and the other end of which is located in the mounting groove of the base;

[0008] A stepper motor, wherein the stepper motor is located on one side of the base and connected to the base via bolts, and an output end of the stepper motor is connected to a lead screw via a coupling;

[0009] A slide bar, which has several pieces and is welded to the base;

[0010] The translation slide is installed on the screw rod and the slide rod. A plurality of round holes are arranged on the translation slide. Ball nuts and balls are arranged in the round holes connected to the screw rod.

[0011] As a further solution of the utility model: the driving device further includes a second driving assembly, the second driving assembly is installed on the first driving assembly, and the second driving assembly includes:

[0012] Bracket 1, wherein the bracket 1 is mounted on the upper surface of the translation slide by bolts, and a screw rod is arranged inside the bracket 1, and the screw rod is fixed on the inner side of the bracket 1;

[0013] A slide rail, which is an I-shaped structure and is installed on one side of the bracket by bolts;

[0014] A through-type lead screw stepper motor comprises a nut and a motor rotor, and the through-type lead screw stepper motor is installed on a lead screw in a bracket.

[0015] As a further solution of the utility model: the driving device also includes a third driving component and a lifting slide, the lifting slide is connected to the through-type lead screw stepper motor by bolts, and I-shaped grooves are provided on both sides of the lifting slide to match the slide rails.

[0016] As a further solution of the utility model: the third drive assembly includes:

[0017] A telescopic cylinder, which is mounted on a lifting slide by bolts;

[0018] Bracket 2 is connected to the output end of the telescopic cylinder. Bracket 2 is a U-shaped structure. Mounting holes and fixing grooves are respectively arranged on both sides of the protruding structure. Rolling bearings are arranged in the mounting holes and the fixing grooves.

[0019] As a further solution of the utility model: the driving device further includes a fourth driving assembly, and the fourth driving assembly includes:

[0020] A rotating shaft, the rotating shaft is installed in the fixing groove of the second bracket and connected to the rolling bearing;

[0021] An internal gear connected to the rotating shaft via a keyway;

[0022] A servo motor 1, wherein the servo motor 1 is mounted on one side of the bracket 2 by means of bolts;

[0023] A connecting shaft, wherein the connecting shaft is installed in the mounting hole of the second bracket, and one end of the connecting shaft is connected to the output end of the first servo motor through a coupling;

[0024] A spur gear is connected to one end of a connecting shaft through a keyway, and the spur gear is meshed with an internal gear.

[0025] As a further solution of the utility model: the fourth drive assembly also includes:

[0026] A connecting frame, the connecting frame is mounted on the rotating shaft through keys and slots;

[0027] A second servo motor, wherein the second servo motor is mounted on one end of the connecting frame by means of bolts;

[0028] An annular fixing frame, the annular fixing frame is an annular structure, and a convex groove is arranged on the surface;

[0029] Bracket three is connected to the output end of servo motor two, and is provided with a plurality of connecting shafts. One end of the connecting shaft is a spherical structure, which is installed in the groove of the annular fixing frame. Bracket three is provided with a plurality of circular holes, and a sliding groove is provided on one side of bracket three.

[0030] As a further solution of the utility model: the driving device also includes:

[0031] A limiter, wherein the limiter is installed in the sliding groove on the bracket three, a threaded hole is arranged above the sliding groove, a fixing bolt is arranged on the hole, and a distance measuring sensor is arranged at one end of the limiter;

[0032] A ruler is arranged above the sliding slot of the bracket three.

[0033] The beneficial effects of the utility model are:

[0034] 1. The first driving assembly can realize the translation of the driving device in the X-axis, which is convenient for welding multiple welding surfaces on the workpiece.

[0035] 2. Driven by a through-type lead screw stepper motor, the drive device can realize the movement of the Z axis and can weld workpieces of different heights.

[0036] 3. The telescopic cylinder can be used to weld workpieces of different widths, making it easy to process a variety of different types of workpieces.

[0037] 4. The welding gun can be rotated by the fourth driving assembly. When facing a workpiece that needs to be welded on both the side and the top surface, welding can be achieved by simply rotating the angle and moving the driving device. At the same time, when facing a workpiece that is welded at an arc or an angle, there is no need to move the workpiece, which can save processing time. The annular fixing frame can stabilize the bracket three, and the spherical structure on the connecting shaft on the bracket three can move in the solid annular fixing frame, which can reduce the impact on the bracket three while playing a fixing role.

[0038] 5. The extension length of the limiter can be adjusted according to the actual needs of welding through the limiter and the ruler. The distance sensor on the limiter can sense the distance between the workpiece and the driving device, thereby controlling the movement of the driving device and adjusting the distance between the welding gun and the workpiece to achieve better welding results. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of a laser welding machine driving device proposed by the utility model;

[0040] Figure 2 This is a schematic diagram of the structure of the third driving component of a laser welding machine driving device proposed by the utility model;

[0041] Figure 3 This is a schematic diagram of the structure of a fourth driving component of a laser welding machine driving device proposed in the utility model;

[0042] Figure 4 This is a schematic diagram of the structure of a fourth driving component of a laser welding machine driving device proposed by the utility model from a top view;

[0043] Figure 5 This is a schematic diagram of the structure of a limit block of a laser welding machine driving device proposed by the utility model;

[0044] Figure 6 This is a structural schematic diagram of the connection of a ring-shaped fixing frame of a laser welding machine driving device proposed by the utility model.

[0045] In the figure: 1-base, 2-screw, 3-slide, 4-stepping motor, 5-translation slide, 6-bracket 1, 7-slide rail, 8-through-type screw stepping motor, 9-lifting slide, 10-telescopic cylinder, 11-bracket 2, 12-rotating axis, 13-internal gear, 14-servo motor 1, 15-connecting shaft, 16-spur gear, 17-connecting frame, 18-servo motor 2, 19-annular fixing frame, 20-bracket 3, 21-limiter, 22-ruler. DETAILED DESCRIPTION

[0046] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0047] The embodiments of the present invention 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] A laser welding machine driving device, such as Figure 1 , Figure 2 As shown, it includes a base 1, a fixing groove is provided on one side of the base 1, a rolling bearing is provided in the groove, a mounting hole is provided on the other side of the base 1, a rolling bearing is provided in the hole, and a first driving component is provided on the base 1, and the first driving component includes:

[0049] A screw rod 2, one end of which is installed in the fixing groove of the base 1, and the other end of which is located in the mounting groove of the base 1;

[0050] A stepper motor 4, wherein the stepper motor 4 is located at one side of the base 1 and is connected to the base 1 via bolts, and an output end of the stepper motor 4 is connected to the lead screw 2 via a coupling;

[0051] A slide bar 3, which has several parts and is welded on the base 1;

[0052] The translation slide 5 is installed on the screw rod 2 and the slide rod 3. The translation slide 5 is provided with a plurality of round holes. The round holes connected to the screw rod 2 are provided with ball nuts and balls.

[0053] The first driving assembly can realize translation of the driving device on the X-axis, which is convenient for welding multiple welding surfaces on the workpiece.

[0054] In order to realize the drive of the vertical Z axis; Figure 1 As shown, the driving device further includes a second driving assembly, which is mounted on the first driving assembly, and the second driving assembly includes:

[0055] A bracket 6, wherein the bracket 6 is mounted on the upper surface of the translation slide 5 by bolts, and a screw rod 2 is arranged inside the bracket 6, and the screw rod 2 is fixed on the inner side of the bracket 6;

[0056] The slide rail 7 is an I-shaped structure and is installed on one side of the bracket 6 by bolts;

[0057] The through-type lead screw stepper motor 8 comprises a nut and a motor rotor, and the through-type lead screw stepper motor 8 is installed on the lead screw 2 in the bracket 6.

[0058] Driven by the through-type lead screw stepper motor 8, the driving device can realize the movement of the Z axis, and can weld workpieces of different heights.

[0059] In order to realize the drive of the Y axis, Figure 2 As shown, the driving device also includes a third driving component. In order to connect the second driving component and the third driving component, the driving device also includes a lifting slide 9. The lifting slide 9 is connected to the through-type screw stepper motor 8 by bolts. I-shaped grooves are provided on both sides of the lifting slide 9 to match the slide rail 7.

[0060] like Figure 3 As shown, the third driving assembly includes:

[0061] A telescopic cylinder 10, wherein the telescopic cylinder 10 is mounted on the lifting slide 9 by bolts;

[0062] The second bracket 11 is connected to the output end of the telescopic cylinder 10. The second bracket 11 is a U-shaped structure. A mounting hole and a fixing groove are respectively provided on both sides of the protruding structure. Rolling bearings are provided in the mounting hole and the fixing groove.

[0063] The telescopic cylinder 10 can be used to weld workpieces of different widths, making it easy to process a variety of different types of workpieces.

[0064] In order to realize the function of laser welding gun being able to rotate, such as Figure 3 As shown, the driving device further includes a fourth driving assembly, and the fourth driving assembly includes:

[0065] A rotating shaft 12, the rotating shaft 12 is installed in a fixing groove of the second bracket 11 and connected to a rolling bearing;

[0066] An internal gear 13, wherein the internal gear 13 is connected to the rotating shaft 12 via a keyway;

[0067] A servo motor 14, wherein the servo motor 14 is mounted on one side of the bracket 2 11 by bolts;

[0068] A connecting shaft 15, wherein the connecting shaft 15 is installed in the mounting hole of the bracket 11, and one end of the connecting shaft 15 is connected to the output end of the servo motor 14 through a coupling;

[0069] The spur gear 16 is connected to one end of the connecting shaft 15 through a keyway, and the spur gear 16 is meshed with the internal gear 13 .

[0070] In order to solve the problem of right-angle contact surface welding requiring angle change, such as Figure 4 , Figure 6 As shown, the fourth drive assembly also includes:

[0071] A connecting frame 17, wherein the connecting frame 17 is mounted on the rotating shaft 12 through a key and a groove;

[0072] A servo motor 18, wherein the servo motor 18 is mounted on one end of the connecting frame 17 by bolts;

[0073] An annular fixing frame 19, the annular fixing frame 19 is an annular structure, and a convex groove is provided on the surface;

[0074] Bracket three 20, the bracket three 20 is connected to the output end of the servo motor two 18, a plurality of connecting shafts are arranged on the bracket three 20, one end of the connecting shaft is a spherical structure, which is installed in the groove of the annular fixing frame 19, a plurality of circular holes are arranged on the bracket three 20, and a sliding groove is arranged on one side of the bracket three 20.

[0075] The welding gun can be rotated by the fourth driving assembly. When facing a workpiece that needs to be welded on both the side and the top surface, welding can be achieved by simply rotating the angle and moving the driving device. At the same time, when facing a workpiece that is welded on an arc or at an angle, there is no need to move the workpiece, which can save processing time. The annular fixing frame 19 can stabilize the bracket three 20, and the spherical structure on the connecting shaft on the bracket three 20 can move within the annular fixing frame 19, thereby reducing the impact on the bracket three 20 while playing a fixing role.

[0076] In order to improve the quality of welding, Figure 3 , Figure 5 As shown, the driving device also includes:

[0077] A stopper 21, wherein the stopper 21 is installed in a sliding groove on the bracket 3 20, a threaded hole is provided above the sliding groove, a fixing bolt is provided on the hole, and a distance measuring sensor is provided at one end of the stopper 21;

[0078] The scale 22 is arranged above the sliding groove of the bracket three 20.

[0079] The extension length of the limiter 21 can be adjusted according to the actual needs of welding through the limiter 21 and the ruler 22. The distance sensor on the limiter 21 can sense the distance between the workpiece and the driving device, thereby controlling the movement of the driving device and adjusting the distance between the welding gun and the workpiece to achieve better welding effect.

[0080] Working principle: The operator connects the welding gun to the circular hole on the bracket 3 20 through bolts, adjusts the telescopic distance of the limiter 21 according to the position where the workpiece needs to be welded, so as to achieve a better welding effect, controls the stepper motor 4, the through-type screw stepper motor 8, and the telescopic cylinder 10 to move the first drive assembly, the second assembly, and the third drive assembly, and moves the welding gun to the position where welding is required. If welding of the upper surface or an arc-shaped seam is required, use the fourth drive assembly to adjust the angle of the welding gun to reduce the number of times the workpiece is moved, and prevent the seam of the workpiece from shifting, thereby affecting the quality of the workpiece.

[0081] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser welding machine driving device, comprising a base (1), characterized in that: A fixing groove is provided on one side of the base (1), a rolling bearing is provided in the groove, a mounting hole is provided on the other side of the base (1), a rolling bearing is provided in the hole, and a first driving component is provided on the base (1), the first driving component comprising: A screw rod (2), one end of the screw rod (2) is installed in a fixing groove of the base (1), and the other end of the screw rod (2) is located in a mounting groove of the base (1); A stepper motor (4), wherein the stepper motor (4) is located on one side of the base (1) and is connected to the base (1) via bolts, and an output end of the stepper motor (4) is connected to the lead screw (2) via a coupling; A slide bar (3), the slide bar (3) having a plurality of parts and welded to the base (1); A translation slide (5) is installed on the screw rod (2) and the slide rod (3). A plurality of circular holes are arranged on the translation slide (5). Ball nuts and balls are arranged in the circular holes connected to the screw rod (2).

2. A laser welding machine driving device according to claim 1, characterized in that: The driving device further comprises a second driving assembly, which is mounted on the first driving assembly, and the second driving assembly comprises: A bracket (6), wherein the bracket (6) is mounted on the upper surface of the translation slide (5) by means of bolts, a screw rod (2) is arranged inside the bracket (6), and the screw rod (2) is fixed on the inner side of the bracket (6); A slide rail (7), wherein the slide rail (7) is an I-shaped structure and is installed on one side of the bracket (6) by means of bolts; A through-type lead screw stepper motor (8), the through-type lead screw stepper motor (8) comprising a nut and a motor rotor, the through-type lead screw stepper motor (8) being mounted on a lead screw (2) in a bracket (6).

3. A laser welding machine driving device according to claim 2, characterized in that: The driving device also includes a third driving component and a lifting slide (9). The lifting slide (9) is connected to the through-type lead screw stepper motor (8) via bolts. I-shaped grooves are provided on both sides of the lifting slide (9) to match the slide rail (7).

4. A laser welding machine driving device according to claim 3, characterized in that: The third driving assembly comprises: A telescopic cylinder (10), wherein the telescopic cylinder (10) is mounted on the lifting slide (9) by means of bolts; The second bracket (11) is connected to the output end of the telescopic cylinder (10). The second bracket (11) is a U-shaped structure. A mounting hole and a fixing groove are respectively arranged on both sides of the protruding structure. Rolling bearings are arranged in the mounting hole and the fixing groove.

5. A laser welding machine driving device according to claim 4, characterized in that: The driving device further includes a fourth driving assembly, and the fourth driving assembly includes: A rotating shaft (12), the rotating shaft (12) is installed in a fixing groove of the second bracket (11) and is connected to a rolling bearing; An internal gear (13), wherein the internal gear (13) is connected to the rotating shaft (12) via a keyway; A servo motor (14) is mounted on one side of the bracket (11) by means of bolts; A connecting shaft (15), wherein the connecting shaft (15) is installed in a mounting hole of the second bracket (11), and one end of the connecting shaft (15) is connected to an output end of the first servo motor (14) via a coupling; A spur gear (16) is connected to one end of the connecting shaft (15) through a keyway, and the spur gear (16) is meshed with the internal gear (13).

6. A laser welding machine driving device according to claim 5, characterized in that: The fourth drive assembly further includes: A connecting frame (17), wherein the connecting frame (17) is mounted on the rotating shaft (12) via a key and a groove; A second servo motor (18), wherein the second servo motor (18) is mounted on one end of the connecting frame (17) by means of bolts; An annular fixing frame (19), the annular fixing frame (19) is an annular structure and is provided with a convex groove on the surface; Bracket three (20), said bracket three (20) is connected to the output end of servo motor two (18), a plurality of connecting shafts are arranged on bracket three (20), one end of the connecting shaft is a spherical structure, installed in the groove of the annular fixing frame (19), a plurality of circular holes are arranged on bracket three (20), and a sliding groove is arranged on one side of bracket three (20).

7. A laser welding machine driving device according to claim 6, characterized in that: The driving device further comprises: A stopper (21), wherein the stopper (21) is mounted on a sliding groove on the bracket three (20), a threaded hole is provided above the sliding groove, a fixing bolt is provided on the hole, and a distance measuring sensor is provided at one end of the stopper (21); A ruler (22), wherein the ruler (22) is arranged above the sliding groove of the bracket three (20).

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