Auxiliary pressing square tube laser welding tooling and laser welding equipment

Abstract

The present invention relates to the technical field related to laser welding, specifically to an auxiliary pressing square tube laser welding tool and a laser welding equipment, the auxiliary pressing square tube laser welding tool comprising a tool frame, the tool frame comprising a support and two first support plates fixed on the support and arranged opposite to each other, and two second support plates fixedly connected to the two first support plates, wherein the two second support plates are both provided with a through hole for the square tube to pass through, so as to form a square tube welding route that passes through the tool frame; during welding work, the synchronous driving mechanism works to drive multiple first pressure wheels to perform synchronous rotation, and the first pressure wheels located on both sides of the square tube welding route have opposite directions, and at the same time, the synchronous driving mechanism also drives the two second pressure wheels to rotate through the transmission mechanism, so that under the coordinated action of the first pressure wheel and the second pressure wheel, the square tube can move stably along the welding route.

Description

Technical Field

[0001] The present invention relates to the technical field related to laser welding, and in particular to auxiliary pressing square tube laser welding tooling and laser welding equipment. Background Art

[0002] A square tube is a tubular material with a square cross-section, typically made by rolling steel strips through a process. After the strips are rolled, the square tube is initially formed, but a gap remains on one side. This gap needs to be welded, then polished and cut before it can be shipped.

[0003] When performing gap welding, corresponding welding tooling is required to fix the square tube and assist in conveying. However, the existing welding tooling, when in use, generally adopts multiple rollers arranged around the square tube to achieve clamping and positioning of the square tube, ensuring that the square tube remains relatively stable during the welding process to improve the welding effect. At the same time, in order to achieve continuous welding of the square tube, two methods are generally adopted to achieve continuous movement of the square tube. First, a traction device or a pushing device is used to achieve the movement of the square tube; second, multiple driving sources are set on multiple rollers, and the rollers can achieve continuous movement of the square tube by rotating themselves while achieving roller positioning and pressing.

[0004] A traction device or a pushing device is used to move the square tube. Since the force is located at one end of the welding fixture, if the feeding or discharging is tilted, it is easy to make the force uniformity between the square tube and the welding fixture uneven, resulting in uneven welding position of the square tube due to uneven force;

[0005] Using multiple drive sources to drive multiple roller devices has solved the drawbacks of using traction devices or pushing devices to a certain extent. However, when multiple drive sources drive multiple rollers to rotate, it is easy for the pressure between the rollers and the square tubes to be different, resulting in different loads on the drive sources. At this time, the driving speeds of the multiple drive sources will have certain differences. When the driving speeds acting on different positions on the square tube are different, the square tube will not be able to maintain a constant speed to a certain extent. At the same time, the forces acting on each position of the square tube will also change, resulting in defects in the square tube welding. Summary of the Invention

[0006] The purpose of the present invention is to provide a square tube laser welding tool and laser welding equipment with auxiliary pressing to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A square tube laser welding tool with auxiliary clamping, comprising a tool frame, the tool frame comprising a support and two first support plates fixed to the support and arranged opposite to each other, and two second support plates fixedly connected to the two first support plates, wherein each of the two second support plates is provided with a through hole for allowing the square tube to pass through, so as to form a square tube welding route running through the tool frame;

[0009] The auxiliary pressing square tube laser welding tool also includes:

[0010] Two first pressure wheels are provided on each side of the square tube welding route, and the first pressure wheels on both sides of the route can be driven by a spacing adjustment mechanism installed in the tooling frame to perform separation or approaching actions. The tooling frame is also provided with a synchronous drive mechanism, which can drive the multiple first pressure wheels to perform synchronous rotation, and the first pressure wheels on both sides of the square tube welding route rotate in opposite directions;

[0011] Two second pressure wheels are provided on the square tube welding route. The two second pressure wheels can be driven by a lifting drive mechanism installed in the tooling frame to rise and fall synchronously. The two second pressure wheels are connected to the synchronous drive mechanism through a transmission mechanism so that the first pressure wheel and the second pressure wheel can rotate synchronously, prompting the square tube clamped between the first pressure wheel and the second pressure wheel to move along the square tube welding route.

[0012] As a further solution of the present invention: four mounting positions are respectively provided on the two second support plates, and each mounting position is provided with a bevel wheel, which abuts against the welding surface of the square tube, and an auxiliary wheel is respectively provided on the two first support plates, which abuts against both sides of the square tube.

[0013] As a further solution of the present invention: the two first pressure wheels located on one side of the square tube welding route are connected by a first belt, the two second pressure wheels are connected by a seventh belt, the two first pressure wheels located on the same side of the tooling frame are respectively connected to the synchronous drive mechanism, and one of the second pressure wheels is connected to the transmission mechanism.

[0014] As a further solution of the present invention: the spacing adjustment mechanism includes a bidirectional screw rotatably mounted between the two first support plates and a first guide rod fixed between the two first support plates, the bidirectional screw being symmetrically provided with two threaded sleeves threadedly connected to the bidirectional screw, and the first guide rod being symmetrically provided with two guide sleeves slidingly mounted thereon;

[0015] Among them, an assembly plate is fixedly connected between the threaded sleeve and the guide sleeve located on the same side, and the two first pressure wheels located on the same side of the square tube welding route are rotatably installed on the assembly plate, and one of the first pressure wheels is connected to the synchronous drive mechanism.

[0016] As a further solution of the present invention: the synchronous drive mechanism includes a power component installed in the tooling frame and two groups of follower components connected to the power component, the two groups of follower components are respectively connected to the first pressure wheel located on both sides of the square tube welding route, and the power component is connected to the transmission mechanism.

[0017] As a further solution of the present invention: the power assembly includes a driving motor installed in the tooling frame and a driving shaft rotatably installed in the tooling frame and connected to the output shaft of the driving motor through a third belt, and two transmission areas are symmetrically provided on the driving shaft, and two horizontal columns are formed in the transmission area and located eccentrically on the driving shaft.

[0018] As a further solution of the present invention: the follower assembly includes a kit and a transmission shaft rotatably mounted on the assembly plate, the transmission shaft is connected to the kit through a bevel gear set, and is also connected to the rotating shaft of the first pressure wheel through a second belt, the kit is slidably connected to the two cross columns and is coaxial with the drive shaft.

[0019] As a further embodiment of the present invention, the transmission mechanism includes a rotating shaft rotatably mounted in the tooling frame and connected to the drive shaft via a fourth belt, a first gear fixed to the rotating shaft, and a second gear rotatably mounted in the tooling frame and meshing with the first gear, wherein the rotating shaft of the second gear is connected to the second pressure wheel via a transmission arm assembly;

[0020] The transmission arm group includes a first connecting rod and a second connecting rod whose head ends are rotatably connected by a connecting shaft. The tail ends of the first connecting rod and the second connecting rod are respectively rotatably connected to the second gear and the rotating shaft of the second pressure wheel, and the connecting shaft is also connected to the rotating shaft of the second gear and the second pressure wheel respectively through a fifth belt and a sixth belt.

[0021] As a further solution of the present invention: the lifting drive mechanism includes a one-way screw rotatably installed in the tooling frame, a second guide rod fixed in the working frame, and two connecting blocks respectively arranged on the one-way screw and the second guide rod, the two connecting blocks are fixedly connected to the crossbeam, the two second pressure wheels are rotatably installed on the crossbeam, and one of the connecting blocks is threadedly connected to the one-way screw, and the other connecting block is slidably connected to the second guide rod.

[0022] The laser welding equipment comprises the auxiliary pressing square tube laser welding tool and a laser welding head installed on the tool frame.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] During operation, the first and second pressing wheels on both sides of the tooling frame are used to press and limit the square tube, ensuring that the square tube can accurately move along the specified line and ensure the welding accuracy;

[0025] Secondly, during welding, the synchronous drive mechanism works to drive multiple first pressure wheels to rotate synchronously, and the first pressure wheels on both sides of the square tube welding route rotate in opposite directions. At the same time, the synchronous drive mechanism also drives the two second pressure wheels to rotate through the transmission mechanism. Therefore, under the coordinated action of the first pressure wheel and the second pressure wheel, the square tube can be stably moved along the welding route.

[0026] Therefore, by setting a mechanical structure between the first pressing wheel and the second pressing wheel, a synchronous linkage effect is achieved without using multiple separate driving sources, ensuring the consistency of the rotation forms of the first pressing wheel and the second pressing wheel, and avoiding the problem of jamming in the transmission of the square tube during the welding process;

[0027] In addition, the first pressure wheels located on both sides of the square tube welding route can be driven by the spacing adjustment mechanism to move synchronously, executing the action of moving away from or approaching each other. Therefore, it can ensure that the square tube is stably clamped between the first pressure wheels on both sides of the route, so that the square tube maintains a high degree of consistency with the route. At the same time, the pressure of the first pressure wheels on both sides of the route on the side of the square tube can be ensured to be consistent, avoiding the square tube from having difficulty moving at a constant speed due to the difference in pressure on both sides of the square tube, thereby affecting the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of an embodiment of a square tube laser welding tool with auxiliary pressing.

[0029] Figure 2 This is a structural schematic diagram from another angle of an embodiment of a square tube laser welding tool for auxiliary compression.

[0030] Figure 3 A structural schematic diagram of another angle of an embodiment of a square tube laser welding tool for auxiliary compression.

[0031] Figure 4 A side view of an embodiment of a square tube laser welding tool with auxiliary compression.

[0032] Figure 5 A schematic diagram of the internal structure of a tool frame in one embodiment of a square tube laser welding tool for auxiliary compression.

[0033] Figure 6 for Figure 5 Schematic diagram of the structure from another angle.

[0034] Figure 7 for Figure 5 Schematic diagram of the structure from another angle.

[0035] Figure 8 This is an exploded view of the structure of the synchronous drive mechanism in one embodiment of the square tube laser welding tooling with auxiliary clamping.

[0036] Figure 9 for Figure 8 Schematic diagram of the structure from another angle.

[0037] Figure 10 This is an exploded view of the transmission mechanism in one embodiment of a square tube laser welding tool for auxiliary compression.

[0038] In the figure: 1. support; 2. first support plate; 3. second support plate; 4. first pressure wheel; 5. second pressure wheel; 6. bevel wheel; 7. auxiliary wheel; 8. laser welding head; 9. two-way screw; 10. first guide rod; 11. threaded sleeve; 12. guide sleeve; 13. assembly plate; 14. first hand wheel; 15. first belt; 16. second belt; 17. transmission shaft; 18. bevel gear set; 19. kit; 20. drive shaft; 21. cross column; 22. drive motor; 23. third belt; 24. fourth belt; 25. rotating shaft; 26. first gear; 27. second gear; 28. connecting shaft; 29. fifth belt; 30. sixth belt; 31. first connecting rod; 32. second connecting rod; 33. one-way screw; 34. second guide rod; 35. second hand wheel; 36. connecting block; 37. cross beam; 38. seventh belt. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0041] See also Figures 1-10 In an embodiment of the present invention, an auxiliary pressing square tube laser welding tool comprises a tool frame, wherein the tool frame comprises a support 1 and two first support plates 2 fixed on the support 1 and arranged opposite to each other, and two second support plates 3 fixedly connected to the two first support plates 2, wherein both second support plates 3 are provided with a through hole for allowing the square tube to pass through, so as to form a square tube welding route running through the tool frame;

[0042] The auxiliary pressing square tube laser welding tool also includes:

[0043] Two first pressing wheels 4 are provided on each side of the square tube welding route, and the first pressing wheels 4 on both sides of the route can be driven by a spacing adjustment mechanism installed in the tooling frame to perform separation or approaching actions. The tooling frame is also provided with a synchronous driving mechanism, which can drive the multiple first pressing wheels 4 to perform synchronous rotation, and the first pressing wheels 4 on both sides of the square tube welding route rotate in opposite directions;

[0044] Two second pressure wheels 5 are provided on the square tube welding route. The two second pressure wheels 5 can be driven by the lifting drive mechanism installed in the tooling frame to rise and fall synchronously. The two second pressure wheels 5 are connected to the synchronous drive mechanism through a transmission mechanism so that the first pressure wheel 4 and the second pressure wheel 5 can rotate synchronously, prompting the square tube clamped between the first pressure wheel 4 and the second pressure wheel 5 to move along the square tube welding route.

[0045] Please refer again Figure 3 and Figure 4 The two second support plates 3 are respectively provided with four mounting positions, and each mounting position is provided with a bevel wheel 6, which abuts against the welding surface of the square tube. The two first support plates 2 are also respectively provided with an auxiliary wheel 7, which abuts against both sides of the square tube.

[0046] During welding, the first pressing wheel 4 and the second pressing wheel 5 press and limit the three sides of the square tube (except the welding side), thereby ensuring that the square tube is aligned with the laser and ensuring welding accuracy. Secondly, by arranging the auxiliary wheels 7 on both sides of the square tube welding path, specifically, the auxiliary wheels 7 are located on both sides of the light spot, further improving the stability of the square tube.

[0047] Secondly, during the welding operation, the synchronous drive mechanism will work to drive multiple first pressure wheels 4 to rotate synchronously, and the first pressure wheels 4 on both sides of the square tube welding route will rotate in opposite directions. At the same time, the synchronous drive mechanism will also drive the two second pressure wheels 5 to rotate through the transmission mechanism. Therefore, under the coordinated action of the first pressure wheel 4 and the second pressure wheel 5, the square tube can move stably along the welding route.

[0048] Please refer again Figure 5 、 Figure 6 as well as Figure 7 The two first pressure wheels 4 located on one side of the square tube welding route are connected by a first belt 15, and the two second pressure wheels 5 are connected by a seventh belt 38. The two first pressure wheels 4 located on the same side of the tooling frame are respectively connected to the synchronous drive mechanism, and one of the second pressure wheels 5 is connected to the transmission mechanism.

[0049] Please refer again Figure 8 and Figure 9 The spacing adjustment mechanism includes a bidirectional screw rod 9 rotatably mounted between the two first support plates 2 and a first guide rod 10 fixed between the two first support plates 2. Two threaded sleeves 11 threadedly connected to the bidirectional screw rod 9 are symmetrically provided on the bidirectional screw rod 9, and two guide sleeves 12 are symmetrically slidably provided on the first guide rod 10.

[0050] Among them, an assembly plate 13 is fixedly connected between the threaded sleeve 11 and the guide sleeve 12 located on the same side, and the two first pressure wheels 4 located on the same side of the square tube welding route are rotatably installed on the assembly plate 13, and one of the first pressure wheels 4 is connected to the synchronous drive mechanism.

[0051] It should be noted that a first handwheel 14 is fixedly provided at one end of the bidirectional screw rod 9. During operation, the staff can rotate the bidirectional screw rod 9 through the first handwheel 14. Then, under the guiding action of the guide sleeve 12 and the first guide rod 10, the two threaded sleeves 11 can be threadedly matched with the bidirectional screw rod 9 to move closer to or away from each other. Accordingly, the two assembly plates 13 move closer to or away from each other, so that the first pressure wheels 4 on both sides of the square tube welding route are closer to or away from each other, so as to press the square tube or release the pressure on the square tube. The spacing adjustment of the first pressure wheels 4 on both sides of the square tube welding route is achieved through the threaded cooperation between the bidirectional screw rod 9 and the threaded sleeve 11, which has the advantages of high driving accuracy, good stability and self-locking.

[0052] The synchronous drive mechanism includes a power component installed in the tooling frame and two groups of follower components connected to the power component. The two groups of follower components are respectively connected to the first pressure wheel 4 located on both sides of the square tube welding route. The power component is connected to the transmission mechanism.

[0053] The power assembly includes a drive motor 22 mounted within the tooling frame, and a drive shaft 20 rotatably mounted within the tooling frame and connected to the output shaft of the drive motor 22 via a third belt 23. The drive shaft 20 is symmetrically provided with two transmission sections, each of which includes two transverse columns 21 located eccentrically of the drive shaft 20. The follower assembly includes a sleeve 19 rotatably mounted on the assembly plate 13 and a transmission shaft 17. The transmission shaft 17 is connected to the sleeve 19 via a bevel gear set 18 and is further connected to the rotation axis of the first pressure roller 4 via a second belt 16. The sleeve 19 is slidably connected to the two transverse columns 21 and is coaxial with the drive shaft 20.

[0054] When the bidirectional screw rod 9 is rotated to adjust the distance between the first pressure wheels 4 on both sides of the square tube welding route, the assembly plate 13 drives the kit 19 to slide along the axial direction of the drive shaft 20 on the two horizontal columns 21;

[0055] Specifically, the bevel gear set 18 includes a first bevel gear fixedly mounted on the sleeve 19 and a second bevel gear fixedly mounted on the end of the transmission shaft 17 facing the sleeve 19 , and the second bevel gear meshes with the first bevel gear;

[0056] During the welding process, the output shaft of the drive motor 22 drives the drive shaft 20 to rotate via the third belt 23, so that the two cross pillars 21 can drive the sleeve 19 to rotate, and the sleeve 19 drives the transmission shaft 17 to rotate via the bevel gear set 18, so that the transmission shaft 17 drives the first pressure wheel 4 to rotate via the second belt 16;

[0057] It should be emphasized that the bevel gear sets 18 connected to the two sets 19 are mirror-imaged. Therefore, the rotation of the drive shaft 20 drives the two sets 19 to rotate in the same direction. After the transmission of the bevel gear set 18, the two transmission shafts 17 rotate in opposite directions, that is, the first pressure wheels 4 on both sides of the square tube welding route rotate in opposite directions, thereby realizing the effective conveying function of the square tube.

[0058] Please refer again Figure 7 and Figure 10The transmission mechanism includes a rotating shaft 25 rotatably mounted in the tooling frame and connected to the driving shaft 20 via a fourth belt 24, a first gear 26 fixed to the rotating shaft 25, and a second gear 27 rotatably mounted in the tooling frame and meshing with the first gear 26. The rotating shaft of the second gear 27 is connected to the second pressure wheel 5 via a transmission arm assembly.

[0059] The transmission arm group includes a first connecting rod 31 and a second connecting rod 32, the head ends of which are rotatably connected by a connecting shaft 28. The tail ends of the first connecting rod 31 and the second connecting rod 32 are respectively rotatably connected to the second gear 27 and the rotating shaft of the second pressure wheel 5, and the connecting shaft 28 is also connected to the rotating shaft of the second gear 27 and the second pressure wheel 5 respectively through a fifth belt 29 and a sixth belt 30.

[0060] The lifting drive mechanism includes a one-way screw 33 rotatably installed in the tooling frame, a second guide rod 34 fixed in the working frame, and two connecting blocks 36 respectively provided on the one-way screw 33 and the second guide rod 34. The two connecting blocks 36 are fixedly connected to a crossbeam 37, and the two second pressure wheels 5 are rotatably installed on the crossbeam 37, and one of the connecting blocks 36 is threadedly connected to the one-way screw 33, and the other connecting block 36 is slidably connected to the second guide rod 34.

[0061] Among them, a second hand wheel 35 is fixed to one end of the one-way screw rod 33. When working, the staff can rotate the one-way screw rod 33 through the second hand wheel 35. Then, under the guiding action of the second guide rod 34, the connecting block 36 on the one-way screw rod 33 is threadedly engaged with the one-way screw rod 33, and then the two second pressing wheels 5 are driven to rise and fall synchronously through the cross beam 37, thereby adjusting the supporting height of the square tube, so as to achieve the optimal spacing between the weld on the square tube and the welding equipment. Secondly, during work, the height of the second pressing wheel 5 is adaptively adjusted, and at the same time, the pressing position of the first pressing wheel 4 on the square tube can be changed, so as to avoid the first pressing wheel 4 being too close to the welding surface of the square tube, which causes the weld of the square tube to deflect under the action of the pressing force;

[0062] During operation, the driving motor 22 drives the driving shaft 20 to rotate through the third belt 23, and the driving shaft 20 drives the rotating shaft 25 to rotate through the fourth belt 24. Then, since the first gear 26 is engaged with the second gear 27, the rotating shaft of the second gear 27 drives the second pressing wheel 5 to rotate through the fifth belt 29 connecting shaft 28 and the sixth belt 30. The arrangement of the first gear 26 and the second gear 27 can play a role in changing direction transmission, ensuring that the direction of the second pressing wheel 5 is adapted to the direction of travel of the square tube.

[0063] The angle between the first connecting rod 31 and the second connecting rod 32 will change during the lifting and lowering of the second pressure wheel 5. Specifically, when the second pressure wheel 5 rises, the angle between the first connecting rod 31 and the second connecting rod 32 increases, and vice versa, so as to ensure that the transmission connection state between the second gear 27 and the second pressure wheel 5 can be maintained normally when the second pressure wheel 5 is at different heights.

[0064] As another embodiment of the present invention, a laser welding device is also proposed, which includes the auxiliary pressing square tube laser welding tool and a laser welding head 8 installed on the tool frame.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0066] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A square tube laser welding tool with auxiliary pressing, comprising a tool frame, the tool frame comprising a support (1), two first support plates (2) fixed on the support (1) and arranged opposite to each other, and two second support plates (3) fixedly connected to the two first support plates (2), wherein: Both of the second support plates (3) are provided with openings for the square tubes to pass through, so as to form a square tube welding route that passes through the tooling frame; It is characterized by further comprising: Two first pressing wheels (4) are provided on each side of the square tube welding route, and the first pressing wheels (4) on both sides of the route can be driven by a spacing adjustment mechanism installed in the tooling frame body to perform separation or approaching actions. The tooling frame body is also provided with a synchronous driving mechanism, and the synchronous driving mechanism can drive the plurality of first pressing wheels (4) to perform synchronous rotation, and the first pressing wheels (4) on both sides of the square tube welding route have opposite directions of rotation; Two second pressing wheels (5) are provided on the square tube welding route. The two second pressing wheels (5) can be driven by a lifting drive mechanism installed in the tooling frame body to rise and fall synchronously. The two second pressing wheels (5) are connected to the synchronous drive mechanism through a transmission mechanism, so that the first pressing wheel (4) and the second pressing wheel (5) can rotate synchronously, prompting the square tube clamped between the first pressing wheel (4) and the second pressing wheel (5) to move along the square tube welding route. The second support plate (3) is provided with an inclined wheel (6), and the inclined wheel (6) abuts against the welding surface of the square tube. The synchronous drive mechanism includes a power component installed in the tooling frame body and two sets of follower components connecting the power component and the first pressing wheel (4). The power component is connected to the transmission mechanism. The spacing adjustment mechanism comprises a bidirectional screw rod (9) rotatably mounted between the two first support plates (2) and a first guide rod (10) fixed between the two first support plates (2); two threaded sleeves (11) threadedly connected to the bidirectional screw rod (9) are symmetrically provided on the bidirectional screw rod (9); and two guide sleeves (12) are symmetrically slidably provided on the first guide rod (10); Wherein, an assembly plate (13) is fixedly connected between the threaded sleeve (11) and the guide sleeve (12) located on the same side, and the two first pressing wheels (4) located on the same side of the square tube welding route are rotatably mounted on the assembly plate (13), and one of the first pressing wheels (4) is connected to the synchronous drive mechanism; The power assembly includes a drive motor (22) installed in the tool frame body and a drive shaft (20) rotatably installed in the tool frame body and connected to the output shaft of the drive motor (22) via a third belt (23), the drive shaft (20) being symmetrically provided with two transmission areas, and two transverse columns (21) located eccentrically of the drive shaft (20) being formed in the transmission area; The follower assembly includes a kit (19) and a transmission shaft (17) rotatably mounted on the assembly plate (13); the transmission shaft (17) is connected to the kit (19) via a bevel gear set (18) and is also connected to the rotating shaft of the first pressure wheel (4) via a second belt (16); the kit (19) is slidably connected to the two transverse columns (21) and is coaxial with the drive shaft (20).

2. The auxiliary pressing square tube laser welding tool according to claim 1, characterized in that: Four mounting positions are respectively provided on the two second support plates (3), and each mounting position is provided with a bevel wheel (6). An auxiliary wheel (7) is also respectively provided on the two first support plates (2), and the auxiliary wheel (7) abuts against two sides of the square tube.

3. The auxiliary pressing square tube laser welding tool according to claim 2, characterized in that: The two first pressing wheels (4) located on one side of the square tube welding travel route are connected by a first belt (15), and the two second pressing wheels (5) are connected by a seventh belt (38). The two first pressing wheels (4) located on the same side of the tooling frame are respectively connected to the synchronous drive mechanism, and one of the second pressing wheels (5) is connected to the transmission mechanism.

4. The auxiliary pressing square tube laser welding tool according to claim 1, characterized in that: The transmission mechanism comprises a rotating shaft (25) rotatably mounted in the tooling frame and connected to the drive shaft (20) via a fourth belt (24), a first gear (26) fixed to the rotating shaft (25), and a second gear (27) rotatably mounted in the tooling frame and meshing with the first gear (26), wherein the rotating shaft of the second gear (27) is connected to the second pressure wheel (5) via a transmission arm assembly; The transmission arm group includes a first connecting rod (31) and a second connecting rod (32) whose head ends are rotatably connected via a connecting shaft (28); the tail ends of the first connecting rod (31) and the second connecting rod (32) are rotatably connected to the second gear (27) and the rotating shaft of the second pressure wheel (5), respectively; and the connecting shaft (28) is further connected to the rotating shaft of the second gear (27) and the rotating shaft of the second pressure wheel (5) via a fifth belt (29) and a sixth belt (30), respectively.

5. The auxiliary pressing square tube laser welding tool according to claim 1, characterized in that: The lifting drive mechanism comprises a one-way screw (33) rotatably mounted in the tooling frame, a second guide rod (34) fixed in the tooling frame, and two connecting blocks (36) respectively arranged on the one-way screw (33) and the second guide rod (34), the two connecting blocks (36) being fixedly connected to a crossbeam (37), the two second pressure wheels (5) being rotatably mounted on the crossbeam (37), and one of the connecting blocks (36) being threadedly connected to the one-way screw (33), and the other connecting block (36) being slidably connected to the second guide rod (34).

6. Laser welding equipment, comprising the auxiliary pressing square tube laser welding tool according to any one of claims 1 to 5, characterized in that: It also includes a laser welding head (8) mounted on the tooling frame.

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