Automatic double-head laser welding machine

Abstract

The utility model relates to a laser welding machine, belongs to the technical field of welding equipment, in particular to an automatic double-head laser welding machine which comprises a bottom plate and two laser welding guns, two supporting rings are fixedly connected to the upper surface of the bottom plate, and cylinders are rotationally connected to the inner walls of the two supporting rings. The ends, away from each other, of the two cylinders are fixedly connected with main gears, the ends, close to each other, of the two cylinders are provided with auxiliary connecting clamps, the upper surface of the bottom plate is fixedly connected with a supporting bin, a rotating assembly is arranged in the supporting bin, and the rotating assembly is partially connected with the main gears. Under the condition that it is guaranteed that a pipe fitting is stably clamped and does not shake, the pipe fitting can be rotated, the welding quality is guaranteed, meanwhile, the position of a laser welding gun is more flexible, and practicability is higher; the double-head laser welding machine solves the problems that according to an existing double-head laser welding machine, due to unstable rotation of a pipe fitting, the welding quality is poor, the position adjusting performance of a welding gun is poor, and the application range is small.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an automatic double-head laser welding machine. Background Art

[0002] Welding machine is a very common equipment in welding process. Simply put, it uses welding means to connect the welded parts to each other without melting. There are different ways of welding. Laser welding is a new type of welding method. It uses high-energy laser pulses to locally heat the material in a small area. The energy of laser radiation diffuses to the inside of the material through heat conduction, and the material is melted to form a specific molten pool. Laser welding has fast welding speed, high welding quality, and usually does not require consumption of welding materials (such as solder, etc.). It is widely used in the welding of thin-walled materials and precision parts.

[0003] In the prior art, a double-head laser welding machine disclosed in a Chinese patent with announcement number CN215966884U includes a processing table, a suspension and a welding mechanism. The suspension is arranged directly above the processing table and connected to the processing table as a whole. A guide groove is arranged on the upper end surface of the processing table, and a transmission roller is arranged in the processing table at the bottom of the guide groove. A slide is arranged at the top of the welding mechanism. The welding mechanism realizes sliding connection through the cooperation of the slide and the slide rail, and a welding gun and an infrared sensor are arranged at the bottom of the welding mechanism. The utility model is provided with two sets of welding mechanisms, which can simultaneously perform synchronous welding operations on both ends of the pipe. By means of the transmission roller arranged at the bottom of the guide groove on the processing table, the pipe can be rotated synchronously while the pipe is being welded, so that the welding point can stably and efficiently complete the circumferential welding. The welding mechanism can adjust its position along the suspension horizontally, so that the double-head welding position can be adaptively adjusted according to the actual length of the pipe.

[0004] However, this patent still has some shortcomings. In order to solve the continuity of round tube welding, this patent sets up a mechanism for rotating round tubes. However, in actual use, since the round tube is not well fixed, it will shake when rotating, which can easily cause the originally aligned welding points to shift, affecting the final welding effect and welding quality. In addition, when dealing with welding of pipes of different diameters, the height of the welding head is not easy to adjust, and the scope of application will also be affected. Therefore, an automated double-head laser welding machine is proposed to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an automated double-head laser welding machine, which can rotate the pipe while ensuring that the pipe is stably clamped without shaking, thereby ensuring the welding quality. The up, down, left and right positions of the two laser welding guns are adjustable, and the applicability is wider. The setting of the auxiliary connecting clamp can also allow the device to have a larger adjustable space when processing pipes of different calibers.

[0006] The technical solution to achieve the purpose of the utility model is: an automated double-head laser welding machine, comprising a base plate and two laser welding guns, the upper surface of the base plate is fixedly connected to two support rings, the inner walls of the two support rings are rotatably connected to cylinders, the ends of the two cylinders that are away from each other are fixedly connected to a main gear, and the ends of the two cylinders that are close to each other are provided with an auxiliary connecting clamp, the upper surface of the base plate is fixedly connected to a support bin, a rotating assembly is provided in the support bin, and part of the rotating assembly is connected to the main gear, the upper surface of the base plate is fixedly connected to a lifting bin, a lifting assembly is provided in the lifting bin, the two laser welding guns are arranged on the lifting assembly, and a bottom support plate is provided on the base plate.

[0007] In some embodiments, the bottom support plate is located between two support rings, the upper surface of the bottom support plate is arc-shaped, a multi-stage telescopic rod is fixedly connected to the upper surface of the bottom plate, the top of the multi-stage telescopic rod is fixedly connected to the lower surface of the bottom support plate, a sleeve rod is fixedly connected to the upper surface of the bottom plate, an extension rod is slidably connected to the inner wall of the sleeve rod, and the top of the extension rod is fixedly connected to the lower surface of the bottom support plate.

[0008] In some embodiments, the auxiliary connecting fixture includes a circular plate fixedly connected to one end of the cylinder, an extension plate fixedly connected to one side of the circular plate, two light columns slidably connected to one side of the extension plate, one end of the light column is fixedly connected to a clamping plate, an adjustment screw is threadedly connected to one side of the extension plate, and one end of the adjustment screw is rotatably connected to the clamping plate.

[0009] In some embodiments, the rotating assembly includes two driving gears that are rotatably connected to the inner walls on both sides of the support bin, and the two driving gears are respectively meshed with two main gears. A driving motor is provided on one side of the support bin, and the output shaft of the driving motor passes through the two driving gears and is coaxially fixed with the two driving gears.

[0010] In some embodiments, the lifting assembly includes two balancing light rods respectively fixedly connected to the upper surface of the base plate, the upper surface of the base plate is rotatably connected to a lifting screw, the top of the lifting bin is fixedly connected to a lifting motor, the lifting motor is coaxially fixed with the lifting screw, the inner wall of the lifting bin is slidably connected to a support plate, the support plate is threadedly connected to the lifting screw, and the support plate is slidably connected to the balancing light rod.

[0011] In some embodiments, the lifting assembly also includes an adjustment box fixedly connected to the upper surface of the support plate, the inner wall of the adjustment box is rotatably connected to a bidirectional threaded screw, one side of the adjustment box is fixedly connected to an adjustment motor, and the adjustment motor is coaxially fixed with the bidirectional threaded screw.

[0012] In some embodiments, the inner wall of the adjustment box is slidably connected to two connection blocks, the two connection blocks are threadedly connected to the bidirectional threaded screw, and the two laser welding guns are respectively arranged on the two connection blocks.

[0013] Compared with the prior art, the utility model has the following significant advantages:

[0014] First, the utility model, through the setting of the rotating assembly and the auxiliary connecting fixture, starts the driving motor during welding, the driving motor drives the two driving gears to rotate synchronously, the two driving gears drive the two main gears to rotate synchronously, and the two main gears will drive the entire sleeve and the auxiliary connecting fixture on the sleeve and the welding pipe fittings clamped at both ends to rotate as a whole, with the preliminary welding connection and the support of the bottom support plate on the middle pipe fitting, the pipe fittings on both sides can drive the middle pipe fitting to rotate stably, gradually complete the welding of the entire pipe fitting surface, achieve a more stable rotation effect, and ensure good welding quality;

[0015] Second: The utility model, through the bottom support plate and lifting assembly, starts the multi-stage telescopic rod to quickly drive the bottom support plate to rise or fall, after the several parts of the pipe are aligned with the center of the circle, starts the lifting motor, and the lifting motor drives the lifting screw to rotate, so that the support plate and the adjustment box rise and fall, thereby changing the height of the adjustment box, and achieving the effect of changing the height of the laser welding gun. Finally, according to the welding position, the position of the two welding guns can be adjusted by the adjustment motor to start welding, giving the laser welding gun a stronger position adjustment ability, greatly improving its scope of application and flexibility;

[0016] The invention solves the problems of poor welding quality caused by unstable rotation of pipe fittings, poor adjustable performance of welding gun position and small application range in the existing double-head laser welding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the main structure provided in one embodiment of the utility model;

[0019] Figure 2 It is a schematic structural diagram of a rotating assembly (cross-section) provided in one embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the auxiliary connection fixture structure provided in one embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the lifting warehouse structure provided in one embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of an adjustment box provided in one embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1. Base plate; 2. Laser welding gun; 3. Support ring; 4. Cylinder; 5. Main gear; 6. Auxiliary connecting fixture; 601. Round plate; 602. Extension plate; 603. Light column; 604. Clamp; 605. Adjustment screw; 7. Support bin; 8. Rotation assembly; 801. Drive gear; 802. Drive motor; 9. Lifting bin; 10. Lifting assembly; 1001. Balance light rod; 1002. Lifting screw; 1003. Lifting motor; 1004. Support plate; 1005. Adjustment box; 1006. Bidirectional threaded screw; 1007. Adjustment motor; 1008. Connecting block; 11. Bottom support plate; 12. Multi-stage telescopic rod; 13. Sleeve rod; 14. Extension rod. DETAILED DESCRIPTION

[0025] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides an automated double-head laser welding machine through improvement. The technical solution of the utility model is:

[0027] like Figure 1As shown, an automatic double-head laser welding machine includes a base plate 1 and two laser welding guns 2. The laser welding guns 2 are connected to an external power supply device. Two support rings 3 are fixedly connected to the upper surface of the base plate 1. The bottom ends of the support rings 3 are connected to the base plate 1 through support rods. The top ends are hollow ring-shaped. The inner walls of the two support rings 3 are rotatably connected to cylinders 4. The interior of the cylinders 4 is also hollow. The ends of the two cylinders 4 that are far away from each other are fixedly connected to main gears 5. A hole for the passage of pipe fittings is provided in the middle of the main gear 5. Auxiliary connecting rods are provided at the ends of the two cylinders 4 that are close to each other. Connect the clamp 6, and the upper surface of the base plate 1 is fixedly connected with a supporting bin 7, and a rotating component 8 is arranged in the supporting bin 7. The supporting bin 7 is in a semi-frame shape, which can not only protect the rotating component 8, but also block the strong light during welding. The rotating component 8 is partially connected to the main gear 5. The upper surface of the base plate 1 is fixedly connected with a lifting bin 9, and a lifting component 10 is arranged in the lifting bin 9. Both laser welding guns 2 are arranged on the lifting component 10, and a bottom support plate 11 is arranged on the base plate 1. There is a vacant position reserved on the supporting bin 7 for the auxiliary connecting component to rotate, which will not cause obstruction.

[0028] like Figure 2 As shown, in one embodiment, the rotating component 8 includes two driving gears 801 that are rotatably connected to the inner walls on both sides of the support bin 7, and the two driving gears 801 are respectively meshed with the two main gears 5. The driving gears 801 have the same thickness as the main gears 5 and will not affect the normal rotation of other gears. A driving motor 802 is provided on one side of the support bin 7. To ensure that the two driving gears 801 can rotate synchronously, the output shaft of the driving motor 802 passes through the two driving gears 801 and is coaxially fixed with the two driving gears 801, that is, one driving motor 802 coaxially drives the two driving gears 801 to rotate synchronously at the same time, thereby ensuring the stability of the rotation. The driving motor 802 adopts an electrically controllable servo motor and is connected to an external control device. The user can control the rotation speed of the driving motor 802 by means of the external control device to achieve more precise regulation.

[0029] like Figure 3As shown, in one embodiment, the bottom support plate 11 is located between the two support rings 3, and the length of the bottom support plate 11 is relatively close to the support rings 3 on both sides but does not touch them. In order to better fit the central pipe, the upper surface of the bottom support plate 11 is in an arc shape, and the upper surface of the bottom plate 1 is fixedly connected to a multi-stage telescopic rod 12, which is connected to an external control device, and the top of the multi-stage telescopic rod 12 is fixedly connected to the lower surface of the bottom support plate 11. In order to ensure the lifting balance of the bottom support plate 11, the upper surface of the bottom plate 1 is fixedly connected to a sleeve rod 13, and the inner wall of the sleeve rod 13 is slidably connected to an extension rod 13. The extension rod 14, the top of the extension rod 14 is fixedly connected to the lower surface of the bottom support plate 11. When in use, the midpoint of the central pipe fitting needs to be coincident with the midpoint of the bottom support plate 11 as much as possible to reduce the offset error of the welding position. For pipe fittings, generally when both ends are welded at the same time, the pipe fittings themselves will have data identification; for the midpoint judgment of the bottom support plate 11, it is only necessary to move the two connecting blocks 1008 through the bidirectional threaded screw 1006 and touch them together. The projection of the vertical downward straight line on the overlapping side of the two on the bottom support plate 11 is the midpoint, which is easy to judge even with the naked eye.

[0030] The auxiliary connecting fixture 6 includes a circular plate 601 fixedly connected to one end of the cylinder 4, and a hole is formed through the circular plate 601 for the pipe to pass through. An extension plate 602 is fixedly connected to one side of the circular plate 601, and the extension plate 602 faces the bottom support plate 11, so as to provide more supporting force for the pipe. Two light columns 603 are slidably connected to one side of the extension plate 602, and two sliding holes matching the light columns 603 and threaded holes matching the adjustment screw 605 are respectively formed on the extension plate 602. One end of the light column 603 is fixedly connected to a clamping plate 604, and one side of the extension plate 602 is threadedly connected to an adjustment screw 605. The adjustment screw 605 is located in the middle of the two light columns 603, and one end of the adjustment screw 605 is rotatably connected to the clamping plate 604.

[0031] like Figure 4 As shown, in one embodiment, the lifting assembly 10 includes two balancing light rods 1001 respectively fixedly connected to the upper surface of the base plate 1, the top of the balancing light rod 1001 is fixedly connected to the inner top wall of the lifting warehouse 9, the upper surface of the base plate 1 is rotatably connected with a lifting screw 1002, the top of the lifting screw 1002 is rotatably connected to the inner top wall of the lifting warehouse 9, the top of the lifting warehouse 9 is fixedly connected with a lifting motor 1003, the lifting motor 1003 is coaxially fixed with the lifting screw 1002, the lifting motor 1003 adopts an electrically controllable servo motor, the inner wall of the lifting warehouse 9 is slidably connected with a support plate 1004, the support plate 1004 is respectively provided with two sliding holes adapted to the balancing light rod 1001 and a threaded hole adapted to the lifting screw 1002, the support plate 1004 is screwed with the lifting screw 1002, and the support plate 1004 is slidably connected to the balancing light rod 1001;

[0032] The lifting assembly 10 also includes an adjustment box 1005 fixedly connected to the upper surface of the support plate 1004, the front side opening of the adjustment box 1005 is convenient for connection, the inner wall of the adjustment box 1005 is rotatably connected to a bidirectional threaded screw 1006, one side of the adjustment box 1005 is fixedly connected to an adjustment motor 1007, the adjustment motor 1007 is coaxially fixed with the bidirectional threaded screw 1006, and the adjustment motor 1007 adopts an electrically controllable servo motor;

[0033] The inner walls of the adjustment box 1005 are slidably connected to two connection blocks 1008, which are both screwed to the bidirectional threaded screw 1006. The two connection blocks 1008 are screwed to threads in different directions on the bidirectional threaded screw 1006, and the two laser welding guns 2 are respectively arranged on the two connection blocks 1008. The connection blocks 1008 are provided with holes for accommodating the laser welding guns 2, and the laser welding guns 2 can be connected by some simple fixing methods.

[0034] The specific working method is: when the automatic double-head laser welding machine is used, first place the main parts to be welded on the bottom support plate 11. When placing, the midpoint of the pipe fittings needs to be overlapped with the position of the bottom support plate 11 as much as possible to ensure that the welding position is not misaligned. Then, the two ends of the pipe fittings to be welded are respectively inserted into the reserved holes in the main gear 5 and the cylinder 4, and the welded pipe fittings at both ends are fixed by using the auxiliary connecting assembly. The specific operation is to rotate the adjustment screws 605 on both sides. The adjustment screws 605 will move toward the outer surface of the pipe fitting with the clamping plate 604 at this time. The same length of screws on both sides can clamp the pipe in the middle position. At this time, adjust the height of the bottom support plate 11 and the height of the laser welding gun 2 according to the actual situation. Start the multi-stage telescopic rod 12 to quickly drive the bottom support plate 11 to rise or fall. After aligning the centers of several parts of the pipe fittings, start the lifting motor 1003. The lifting motor 1003 drives the lifting screw 1002 to rotate, so that the support plate 1004 and the adjustment box 1005 rise and fall, thereby changing the height of the adjustment box 1005, and achieving the effect of changing the height of the laser welding gun 2. Finally, according to the welding position, the positions of the two welding guns are adjusted by adjusting the motor 1007 to start welding. When the preliminary welding is completed, the pipe fitting needs to be rotated, and the drive motor 802 is started. The drive motor 802 drives the two drive gears 801 to rotate synchronously. The two drive gears 801 drive the two main gears 5 to rotate synchronously. The two main gears 5 will then drive the entire sleeve and the auxiliary connecting fixture 6 on the sleeve and the welding pipe fittings clamped at both ends to rotate as a whole. With the preliminary welding connection and the support of the middle pipe fitting by the bottom support plate 11, the pipe fittings on both sides can drive the middle pipe fitting to rotate stably, and gradually complete the welding of the entire pipe fitting surface.

[0035] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. An automated double-head laser welding machine, comprising a base plate (1) and two laser welding guns (2), characterized in that: Two support rings (3) are fixedly connected to the upper surface of the base plate (1), and the inner walls of the two support rings (3) are rotatably connected to cylinders (4). The ends of the two cylinders (4) that are away from each other are fixedly connected to a main gear (5), and the ends of the two cylinders (4) that are close to each other are provided with an auxiliary connection clamp (6). The upper surface of the base plate (1) is fixedly connected to a support bin (7), and a rotating assembly (8) is provided in the support bin (7), and a part of the rotating assembly (8) is connected to the main gear (5). The upper surface of the base plate (1) is fixedly connected to a lifting bin (9), and a lifting assembly (10) is provided in the lifting bin (9). The two laser welding guns (2) are both arranged on the lifting assembly (10), and a bottom support plate (11) is provided on the base plate (1).

2. The automatic double-head laser welding machine according to claim 1, characterized in that: The bottom support plate (11) is located between the two support rings (3); the upper surface of the bottom support plate (11) is in an arc shape; the upper surface of the bottom plate (1) is fixedly connected to a multi-stage telescopic rod (12); the top end of the multi-stage telescopic rod (12) is fixedly connected to the lower surface of the bottom support plate (11); the upper surface of the bottom plate (1) is fixedly connected to a sleeve rod (13); the inner wall of the sleeve rod (13) is slidably connected to an extension rod (14); the top end of the extension rod (14) is fixedly connected to the lower surface of the bottom support plate (11).

3. The automatic double-head laser welding machine according to claim 1, characterized in that: The auxiliary connection fixture (6) comprises a circular plate (601) fixedly connected to one end of the cylinder (4); an extension plate (602) is fixedly connected to one side of the circular plate (601); two light columns (603) are slidably connected to one side of the extension plate (602); one end of the light column (603) is fixedly connected to a clamping plate (604); one side of the extension plate (602) is threadedly connected to an adjustment screw (605); one end of the adjustment screw (605) is rotatably connected to the clamping plate (604).

4. The automatic double-head laser welding machine according to claim 1, characterized in that: The rotating assembly (8) comprises two driving gears (801) which are rotatably connected to the inner walls of both sides of the support bin (7), and the two driving gears (801) are respectively meshed with the two main gears (5). A driving motor (802) is provided on one side of the support bin (7), and the output shaft of the driving motor (802) passes through the two driving gears (801) and is coaxially fixed to the two driving gears (801).

5. The automatic double-head laser welding machine according to claim 1, characterized in that: The lifting assembly (10) comprises two balancing light rods (1001) respectively fixedly connected to the upper surface of the base plate (1); the upper surface of the base plate (1) is rotatably connected to a lifting screw (1002); the top of the lifting bin (9) is fixedly connected to a lifting motor (1003); the lifting motor (1003) and the lifting screw (1002) are coaxially fixed; the inner wall of the lifting bin (9) is slidably connected to a support plate (1004); the support plate (1004) and the lifting screw (1002) are screwed together; and the support plate (1004) and the balancing light rod (1001) are slidably connected.

6. The automatic double-head laser welding machine according to claim 5, characterized in that: The lifting assembly (10) further comprises an adjustment box (1005) fixedly connected to the upper surface of the support plate (1004); the inner wall of the adjustment box (1005) is rotatably connected to a bidirectional threaded screw (1006); one side of the adjustment box (1005) is fixedly connected to an adjustment motor (1007); the adjustment motor (1007) is coaxially fixed to the bidirectional threaded screw (1006).

7. The automatic double-head laser welding machine according to claim 6, characterized in that: The inner wall of the adjustment box (1005) is slidably connected to two connection blocks (1008), the two connection blocks (1008) are both threadedly connected to the bidirectional threaded screw (1006), and the two laser welding guns (2) are respectively arranged on the two connection blocks (1008).

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