Square tube laser welding equipment and welding method for eliminating movement and deviation

Abstract

The present invention relates to the field of laser welding technology, and specifically to square tube laser welding equipment and a welding method for eliminating movement and jump deviation, comprising: a symmetrically arranged lifting plate, on which a tilting block is fixed; a translation assembly, arranged on the lifting plate, and a connecting plate is connected to the translation assembly; a lifting mechanism, arranged on the connecting plate, and a rotating plate is connected to the lifting mechanism, and a welding head is fixed at one end of the rotating plate away from the connecting plate, and the lifting mechanism can adjust the distance between the welding head and the connecting plate through the rotating plate; a follow-up rotating mechanism is arranged on the connecting plate and connected to the lifting mechanism; an impurity cleaning mechanism is arranged on the rotating plate, and a symmetrically arranged clamping wheel is connected to the spacing control assembly. The present application can fix the square tube through the clamping wheel during welding to prevent the square tube from jumping during welding and causing poor welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to square tube laser welding equipment and a welding method capable of eliminating movement and jump deviation. 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.

[0003] During laser welding, the laser beam is focused on the workpiece surface, and the workpiece surface is heated to melt through heat conduction, forming a specific molten pool, which eventually solidifies into a weld. Laser welding has the characteristics of low heat input, small welding deformation, and no influence of electromagnetic fields.

[0004] Existing laser welding usually requires a clamping device to fix the square tube before welding. However, during the welding process, the square tube may still be warped due to stress, which affects the welding quality. During welding, impurities on the surface of the square tube cannot be cleaned, resulting in reduced mechanical properties of the welding position. Summary of the invention

[0005] The object of the present invention is to provide a square tube laser welding device and a welding method which can eliminate the movement and jump deviation, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] Square tube laser welding equipment that eliminates movement and deviation, including:

[0008] A workbench, and a lifting plate fixedly mounted on the workbench and symmetrically arranged, wherein a tilting block is fixed on the lifting plate;

[0009] Also includes:

[0010] A translation assembly is arranged on the lifting plate, and a connecting plate is connected to the translation assembly;

[0011] A lifting mechanism is arranged on the connecting plate, a rotating plate is connected to the lifting mechanism, a welding head is fixed to one end of the rotating plate away from the connecting plate, and the lifting mechanism can adjust the distance between the welding head and the connecting plate through the rotating plate;

[0012] A follow-up rotating mechanism is arranged on the connecting plate and connected to the lifting mechanism, the connecting plate can drive the follow-up rotating mechanism to move to a position matching with the tilting block, and drive the rotating plate to rotate a certain angle through the lifting mechanism;

[0013] An impurity cleaning mechanism is arranged on the rotating plate and is used to clean the surface of the square tube to be welded. The rotating plate is also provided with a spacing adjustment component, and the spacing adjustment component is connected to symmetrically arranged clamping wheels. The spacing adjustment component can adjust the spacing between the two clamping wheels.

[0014] As a further solution of the present invention: the translation assembly includes a screw rod rotatably mounted on the lifting plate, a first threaded sleeve movably mounted on the screw rod and cooperating with the screw rod thread, a guide column is fixed on the lifting plate, a guide sleeve is slidably mounted on the guide column, and the guide sleeve and the first threaded sleeve are fixedly connected to the connecting plate.

[0015] As a further solution of the present invention: the lifting mechanism includes a rotating sleeve rotatably installed on the connecting plate, a rotating rod is slidably installed in the rotating sleeve, the rotating rod is fixedly connected to the rotating plate, a slot is provided on the outer wall of the rotating sleeve, and a driven component connected to the rotating rod is provided on the connecting plate.

[0016] As a further solution of the present invention: the driven component includes a cylinder fixedly mounted on the connecting plate and symmetrically arranged, a movable plate sleeved on the rotating sleeve is fixed on the output end of the cylinder, a limiting ring slidably connected to the slot is fixed on the rotating rod, and the limiting ring abuts against the movable plate.

[0017] As a further solution of the present invention: the follow-up rotating mechanism includes a guide groove opened on the outer wall of the rotating sleeve, a movable sleeve is slidably installed on the rotating sleeve, a limit block slidably connected to the guide groove is fixed to the inner wall of the movable sleeve, and a guide assembly connected to the movable sleeve is arranged on the connecting plate.

[0018] As a further solution of the present invention: the guide assembly includes support columns fixedly mounted on the connecting plate and symmetrically arranged, a support plate fixedly connected to the movable sleeve is slidably mounted on the support column, limiting wheels cooperating with the tilting block are fixed at both ends of the support plate, and a first spring abutting against the support plate is sleeved on the support column.

[0019] As a further solution of the present invention: the impurity cleaning mechanism includes a supporting sleeve fixedly mounted on the rotating plate and symmetrically arranged, a movable rod is slidably installed in the supporting sleeve, a receiving plate is fixed to the end of the movable rod, a movable wheel symmetrically arranged is rotatably mounted on the side of the receiving plate away from the movable rod, and a connecting component connected to the receiving plate is arranged on the rotating plate.

[0020] As a further solution of the present invention: the connection component includes a second spring sleeved on the movable rod, the two ends of the second spring are respectively abutted against the rotating plate and the receiving plate, a moving contact is fixed on the receiving plate, a static contact cooperating with the moving contact is fixed on the rotating plate, and an air supply pipe is fixed on the rotating plate.

[0021] As a further solution of the present invention: the spacing adjustment component includes a sliding groove opened on the rotating plate and symmetrically arranged, a bidirectional screw is rotatably installed on the rotating plate, a second threaded sleeve symmetrically arranged is movably installed on the bidirectional screw, the second threaded sleeve is threadedly matched with the bidirectional screw, a sliding plate slidably connected to the sliding groove is fixed to the side wall of the second threaded sleeve, and the sliding plate is rotatably connected to the pressure wheel.

[0022] A welding method for a square tube laser welding device that eliminates movement and runout deviation comprises the following steps:

[0023] Step 1: According to the position of the square tube, the lifting mechanism is used to control the movement of the rotating plate, so as to control the pressing wheel to move to abutment with the square tube through the spacing control component;

[0024] Step 2: Under the action of the translation assembly, the connecting plate is driven to move, thereby driving the rotating plate to move through the lifting mechanism, so as to perform welding processing on the square pipe through the welding head;

[0025] Step 3: When the rotating plate moves, it will also drive the impurity cleaning mechanism to clean the impurities on the surface of the other pipe before welding;

[0026] Step 4: After welding is completed, under the action of the follow-up rotating mechanism, the rotating plate is controlled to rotate through the lifting mechanism to control the clamping wheel to always be located in front of the welding head in the moving direction.

[0027] Compared with the prior art, the beneficial effect of the present invention is that the present application can achieve the effect of synchronously limiting the other party tube when welding through the synchronous movement of the clamping wheel and the welding head. Specifically, under the action of the lifting mechanism, the movement of the welding head and the spacing control component is controlled by the rotating plate. When the welding head and the clamping wheel move to the position matching with the square tube, under the action of the spacing control component, the clamping wheel is controlled to fix the other party tube. At this time, the translation component moves to control the synchronous movement of the welding head and the clamping wheel to prevent the square tube from warping due to stress on the square tube during the welding process, thereby affecting the welding quality.

[0028] When the welding of the welding head is completed, under the action of the follow-up rotating mechanism, the rotating plate can be controlled to rotate around the rotating rod, so that the positions of the air supply pipe and the welding head are converted to each other, to ensure that the air supply pipe is always located at the front end of the moving direction of the welding head. At the same time, under the action of the air supply pipe, the problem of reduced welding quality due to the influence of impurities remaining on the surface of the square tube during the welding process can be prevented.

[0029] Through the cooperation of the limiting wheel and the tilting block, the position of the welding head can be changed only after the welding head is separated from the square tube. This can not only facilitate the welding of the welding head to the other side of the square tube, but also avoid the need to stop the machine to adjust the position of the welding head, so as to ensure efficient welding while ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of an embodiment of a square tube laser welding device for eliminating movement and vibration deviation.

[0031] Figure 2 A structural schematic diagram of another angle in an embodiment of a square tube laser welding device for eliminating movement and jump deviation.

[0032] Figure 3 Schematic diagram of the connection relationship between some translation components, some impurity cleaning mechanisms, lifting mechanisms, and some spacing control components in an embodiment of a square tube laser welding equipment for eliminating movement jump deviation.

[0033] Figure 4 for Figure 3 Schematic diagram from another angle.

[0034] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0035] Figure 6 A schematic diagram of the structure of some follow-up rotating mechanisms and lifting mechanisms in an embodiment of a square tube laser welding equipment for eliminating movement and jump deviation.

[0036] Figure 7 Schematic diagram of the exploded structure of the follow-up rotating mechanism and part of the lifting mechanism in the embodiment of the square tube laser welding equipment for eliminating the movement jump deviation.

[0037] Figure 8 A schematic diagram of a partial half-section structure in an embodiment of a square tube laser welding device for eliminating movement and jump deviation.

[0038] Fig. 9 A schematic diagram of the structure of the spacing control component and impurity cleaning mechanism in an embodiment of a square tube laser welding equipment for eliminating movement and jump deviation.

[0039] Fig.10Schematic diagram of the explosion structure of part of the impurity cleaning mechanism in the embodiment of the square tube laser welding equipment for eliminating movement and jump deviation.

[0040] Fig.11 A schematic diagram of the structure of the spacing control component in an embodiment of a square tube laser welding device for eliminating movement and jump deviation.

[0041] In the figure: 1, workbench; 101, lifting plate; 2, tilting block; 3, screw rod; 4, first threaded sleeve; 5, guide column; 6, guide sleeve; 7, connecting plate; 8, cylinder; 9, rotating sleeve; 901, slot; 902, first vertical slot; 903, first spiral slot; 904, second vertical slot; 905, second spiral slot; 10, rotating rod; 1001, limit ring; 11, movable plate; 12, support column; 13, first A spring; 14. Support plate; 15. Movable sleeve; 1501. Limit block; 16. Limit wheel; 17. Rotating plate; 1701. Slide groove; 18. Bidirectional screw rod; 19. Second threaded sleeve; 20. Sliding plate; 21. Clamping wheel; 22. Welding head; 23. Support sleeve; 24. Movable rod; 25. Receiver plate; 26. Second spring; 27. Movable wheel; 28. Moving contact; 29. ​​Static contact; 30. Air supply pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0043] 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 a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0044] See also Figures 1 to 11 In an embodiment of the present invention, a square tube laser welding device for eliminating movement and deviation comprises:

[0045] A workbench 1, and a lifting plate 101 fixedly mounted on the workbench 1 and symmetrically arranged, wherein a tilting block 2 is fixed on the lifting plate 101;

[0046] Also includes:

[0047] See also Figure 1-Figure 4 , a translation assembly is arranged on the lifting plate 101, and a connecting plate 7 is connected to the translation assembly. The translation assembly includes a screw rod 3 rotatably mounted on the lifting plate 101, and a first threaded sleeve 4 threadably mounted on the screw rod 3 and threadedly matched with the screw rod 3, a guide column 5 is fixed on the lifting plate 101, and a guide sleeve 6 is slidably mounted on the guide column 5, and the guide sleeve 6 and the first threaded sleeve 4 are fixedly connected to the connecting plate 7.

[0048] In detail, the present application can be used in conjunction with a clamping device. When welding a square tube, the square tube to be welded can be clamped and fixed by the clamping device. After the square tube is fixed, the lead screw 3 is controlled to rotate by a motor, thereby driving the first threaded sleeve 4 to move. The first threaded sleeve 4 will drive the guide sleeve 6 to move along the length direction of the guide column 5 through the connecting plate 7. Since the guide column 5 and the guide sleeve 6 have a guiding function, it can be ensured that the first threaded sleeve 4 moves along the length direction of the lead screw 3 and will not rotate with the lead screw 3. The connecting plate 7 will also drive the lifting mechanism to move, so as to control the welding head 22 to move along the weld direction of the square tube through the connecting plate 7. Among them, the clamping device is an application of the prior art, which is used to assist the welding of the square tube to ensure that the square tube will not deviate during the welding process. This application will not go into details. The lead screw 3 has a self-locking function, and the position of the connecting plate 7 can be locked after the welding is completed to prevent the position of the welding head 22 from deviating.

[0049] See also Figure 1-Figure 4 , Figure 6-Figure 8 , a lifting mechanism is arranged on the connecting plate 7, the lifting mechanism is connected with a rotating plate 17, and a welding head 22 is fixed on one end of the rotating plate 17 away from the connecting plate 7, and the lifting mechanism can adjust the spacing between the welding head 22 and the connecting plate 7 through the rotating plate 17, the lifting mechanism includes a rotating sleeve 9 rotatably mounted on the connecting plate 7, a rotating rod 10 is slidably mounted in the rotating sleeve 9, the rotating rod 10 is fixedly connected to the rotating plate 17, a slot 901 is provided on the outer wall of the rotating sleeve 9, and a driven component connected to the rotating rod 10 is provided on the connecting plate 7, wherein the driven component includes a cylinder 8 fixedly mounted on the connecting plate 7 and symmetrically arranged, a movable plate 11 sleeved on the rotating sleeve 9 is fixed on the output end of the cylinder 8, a limiting ring 1001 slidably connected to the slot 901 is fixed on the rotating rod 10, and the limiting ring 1001 abuts against the movable plate 11.

[0050] It should be noted that in order to ensure that the welding head 22 can weld square tubes of different sizes, it is necessary to adjust the height of the welding head 22 from the ground according to the thickness of the square tube. In the initial state, under the action of the cylinder 8, the movable plate 11 is located at the end of the stroke toward the connecting plate 7, so as to control the maximum fitting size between the rotating rod 10 and the rotating sleeve 9 through the limit ring 1001. At this time, the limit ring 1001 is located at the end of the stroke on one side of the slot 901. Under the action of the rotating rod 10, the height of the welding head 22 from the ground is controlled to be maximum through the rotating plate 17. When it is necessary to weld the square tube, under the action of the cylinder 8, The movable plate 11 is pushed to move in a direction away from the connecting plate 7 to control the limit ring 1001 to move along the length direction of the slot 901. The limit ring 1001 will also drive the rotating rod 10 to move, thereby driving the rotating plate 17 to move. When the welding head 22 moves to the required position, the cylinder 8 stops working. Specifically, the position of the welding head 22 is adjusted by the cylinder 8, which can not only meet the welding requirements of square tubes of different sizes, but also can store the welding head 22 when it is not needed to reduce the space occupied by the equipment, and can also play a certain protective role on the welding head 22 to extend the service life of the welding head 22.

[0051] See also Figure 1-Figure 8 , a follow-up rotating mechanism is arranged on the connecting plate 7 and connected with the lifting mechanism, the connecting plate 7 can drive the follow-up rotating mechanism to move to a position cooperating with the tilting block 2, and drive the rotating plate 17 to rotate a certain angle through the lifting mechanism, the follow-up rotating mechanism includes a guide groove opened on the outer wall of the rotating sleeve 9, a movable sleeve 15 is slidably mounted on the rotating sleeve 9, and a limit block 1501 slidably connected with the guide groove is fixed on the inner wall of the movable sleeve 15, and a guide assembly connected with the movable sleeve 15 is provided on the connecting plate 7, wherein the guide assembly includes a support column 12 fixedly mounted on the connecting plate 7 and symmetrically arranged, a support plate 14 fixedly connected with the movable sleeve 15 is slidably mounted on the support column 12, and limiting wheels 16 cooperating with the tilting block 2 are fixed at both ends of the support plate 14, and a first spring 13 abutting against the support plate 14 is sleeved on the support column 12.

[0052] Specifically, the guide grooves are arranged in two groups at equal intervals around the circumference, and each group of guide grooves can be divided into four sections, namely, a first vertical groove 902, a first spiral groove 903, a second vertical groove 904, and a second spiral groove 905. The first vertical groove 902, the first spiral groove 903, the second vertical groove 904, and the second spiral groove 905 are connected to each other from head to tail in sequence, and the number of spiral turns of the first spiral groove 903 and the second spiral groove 905 is a quarter of a turn. The tilting block 2 is arranged in an inclined shape, and when the limiting wheel 16 abuts against the tilting block 2, the supporting plate 14 can be controlled by the limiting wheel 16 to move in a direction away from the connecting plate 7. In the initial state, the limiting wheel 16 and the tilting block 2 are in a separated state, and the first spring 13 is in an initially compressed state, so that The support plate 14 is located at the end of the stroke toward the connecting plate 7, so that the limit block 1501 is controlled by the movable sleeve 15 to be located at the connection position of the first vertical groove 902 and the second spiral groove 905. When welding the other pipe, it is necessary to control the impurity cleaning mechanism and the welding head 22 to move along the length direction of the weld, and in order to ensure the welding effect, it is necessary to control the impurity cleaning mechanism to be located at the front end of the moving direction of the welding head 22, so as to clean the surface of the other pipe before welding. When the welding is completed, under the action of the screw rod 3, the connecting plate 7 is controlled to continue to move, so that one of the limit wheels 16 moves toward the tilting block 2. When this limit wheel 16 moves to the position abutting against the tilting block 2, under the action of the tilting block 2, The support plate 14 is controlled to move in the direction away from the connecting plate 7 by the limiting wheel 16, and the first spring 13 is compressed to drive the movable sleeve 15 to move. The movable sleeve 15 will drive the limiting block 1501 to slide along the first vertical groove 902. When the limiting block 1501 disengages from the first vertical groove 902 and enters the first spiral groove 903, the support column 12 has a guiding function to ensure that the movable sleeve 15 can only move along the length direction of the support column 12 and will not rotate with the rotating sleeve 9. Therefore, the rotating sleeve 9 will rotate to control the rotation of the rotating rod 10 through the limiting ring 1001 and the slot 901, so that the rotating plate 17 rotates. When the limiting block 1501 moves to the first spiral groove When 903 is connected to the second vertical groove 904, the limiting wheel 16 moves to the end of the stroke. At this time, the screw rod 3 reverses and controls the limiting wheel 16 to move in the direction away from the tilting block 2. The first spring 13 is elastically released, so that the limiting block 1501 enters the second vertical groove 904. When the limiting block 1501 disengages from the second vertical groove 904 and enters the second spiral groove 905, the rotating sleeve 9 rotates again to control the rotation of the rotating rod 10. When the limiting block 1501 moves to the next second spiral groove 905 and connects to the first vertical groove 902, the rotating sleeve 9 rotates just half a circle, thereby exchanging the position of the impurity cleaning mechanism and the welding head 22 to achieve the effect of cleaning the square pipe first and then welding.

[0053] Preferably, when welding the square tube, it is usually necessary to weld both the front and back sides of the square tube. Since the length of the square tube is less than the travel of the welding head 22, the limiting wheel 16 is in a separated state from the tilting block 2 before the welding head 22 is separated from the square tube. Therefore, through the cooperation of the limiting wheel 16 and the tilting block 2, the position of the welding head 22 can be changed only after the welding head 22 is separated from the square tube. This can facilitate the welding of the welding head 22 to the other side of the square tube and avoid the need to stop the machine to adjust the position of the welding head 22, so as to efficiently perform welding while ensuring the welding quality.

[0054] See also Figure 1-Figure 4 , Fig. 9 , Fig.10 , an impurity cleaning mechanism is arranged on the rotating plate 17, and is used to clean the surface of the square tube to be welded. The impurity cleaning mechanism includes a supporting sleeve 23 fixedly mounted on the rotating plate 17 and symmetrically arranged, and a movable rod 24 is slidably installed in the supporting sleeve 23, and a receiving plate 25 is fixed at the end of the movable rod 24, and a movable wheel 27 symmetrically arranged is rotatably installed on the side of the receiving plate 25 away from the movable rod 24, and a connection component connected to the receiving plate 25 is arranged on the rotating plate 17, wherein the connection component includes a second spring 26 sleeved on the movable rod 24, and the two ends of the second spring 26 are respectively abutted against the rotating plate 17 and the receiving plate 25, a moving contact 28 is fixed on the receiving plate 25, and a static contact 29 cooperating with the moving contact 28 is fixed on the rotating plate 17, and an air supply pipe 30 is fixed on the rotating plate 17.

[0055] Furthermore, a pump is provided on the rotating plate 17. In the initial state, the second spring 26 is in a compressed state, so that the movable rod 24 is located at the end of the stroke away from the supporting sleeve 23. Under the action of the receiving plate 25, the moving contact 28 and the static contact 29 are in a separated state. When the square tube needs to be welded, the distance between the welding head 22 and the square tube needs to be adjusted first. At this time, under the action of the cylinder 8, the rotating plate 17 moves toward the square tube. When the position adjustment of the welding head 22 is completed, the movable wheel 27 will be located below the welding head 22. At this time, under the action of the screw rod 3, the welding head 22 and the movable wheel 27 are controlled to move toward the square tube weld. , the movable wheel 27 is located in front of the moving direction of the welding head 22, therefore, the movable wheel 27 will first abut against the surface of the square tube, at this time, the movable wheel 27 will give way to control the movable rod 24 to move along the length direction of the support sleeve 23 through the receiving plate 25, and the receiving plate 25 will also drive the moving contact 28 to move. When the movable wheel 27 moves to the same horizontal plane as the welding head 22, the movable wheel 27 will be completely located above the square tube. At this time, the moving contact 28 and the static contact 29 are in contact with each other, and the pumping machine is controlled to work to pump the gas into the air supply pipe 30. Under the action of the air supply pipe 30, the high-pressure gas is blown on the surface of the square tube to clean the impurities remaining on the surface of the square tube.

[0056] Preferably, when the welding of the welding head 22 is completed, under the action of the follow-up rotating mechanism, the rotating plate 17 can be controlled to rotate around the rotating rod 10, so that the positions of the air supply pipe 30 and the welding head 22 are converted to each other, so as to ensure that the air supply pipe 30 is always located at the front end of the moving direction of the welding head 22. At the same time, under the action of the air supply pipe 30, the problem of reduced welding quality due to the influence of impurities remaining on the surface of the square tube during the welding process can be prevented.

[0057] See also Figure 1-Figure 4 , Fig. 9 , Fig.11 The rotating plate 17 is also provided with a spacing adjustment component, and a symmetrically arranged pressure wheel 21 is connected to the spacing adjustment component. The spacing adjustment component can adjust the spacing between the two pressure wheels 21. The spacing adjustment component includes a slide groove 1701 opened on the rotating plate 17 and symmetrically arranged. A bidirectional screw rod 18 is rotatably installed on the rotating plate 17, and a symmetrically arranged second threaded sleeve 19 is movably installed on the bidirectional screw rod 18. The second threaded sleeve 19 is threadedly matched with the bidirectional screw rod 18. A sliding plate 20 slidably connected to the slide groove 1701 is fixed to the side wall of the second threaded sleeve 19, and the sliding plate 20 is rotationally connected to the pressure wheel 21.

[0058] Specifically, the clamping wheel 21 is arranged in an inclined shape, and a notch for limiting is formed in the middle of the clamping wheel 21. In the initial state, the distance between the two second threaded sleeves 19 is the largest, so that the distance between the two clamping wheels 21 is the largest. When welding the square tube, in order to prevent the square tube from being warped due to stress due to the failure to be clamped, thereby affecting the welding effect, the clamping wheel 21 is required to limit the square tube. At this time, under the action of the cylinder 8, the clamping wheel 21 and the welding head 22 are controlled to move toward the square tube. When the welding head 22 moves to the position matching the square tube, the notch of the clamping wheel 21 moves to the position matching the square tube. At this time, the bidirectional screw 18 can be controlled to rotate. And drive the two second threaded sleeves 19 to move, the second threaded sleeves 19 will drive the sliding plate 20 to move along the length direction of the slide groove 1701, the sliding plate 20 and the slide groove 1701 have a guiding function to ensure that the second threaded sleeve 19 moves along the length direction of the bidirectional screw rod 18 and will not rotate with the bidirectional screw rod 18, the sliding plate 20 will also drive the clamping wheel 21 to move toward the square tube until the recess of the clamping wheel 21 moves to the abutment position with the upper end and the side end of the square tube to fix the square tube, at this time, the screw rod 3 rotates to control the clamping wheel 21 and the welding head 22 to move synchronously along the length direction of the square tube, thereby ensuring that the square tube is always in a locked state.

[0059] Preferably, the bidirectional screw rod 18 can adjust the distance between the two clamping wheels 21 and can be used in conjunction with square tubes of different sizes, thereby increasing the scope of application of the present application.

[0060] A welding method for a square tube laser welding device that eliminates movement and runout deviation comprises the following steps:

[0061] Step 1: According to the position of the square tube, the lifting mechanism is used to control the movement of the rotating plate 17, so as to control the pressing wheel 21 to move to abutting position with the square tube through the spacing control component;

[0062] Step 2: Under the action of the translation assembly, the connecting plate 7 is driven to move, thereby driving the rotating plate 17 to move through the lifting mechanism, so as to perform welding processing on the other pipe through the welding head 22;

[0063] Step 3: When the rotating plate 17 moves, it also drives the impurity cleaning mechanism to move, so as to clean the impurities on the surface of the other pipe before welding;

[0064] Step 4: After welding is completed, under the action of the follow-up rotating mechanism, the rotating plate 17 is controlled to rotate through the lifting mechanism to control the clamping wheel to always be located in front of the welding head 22 in the moving direction.

[0065] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Square tube laser welding equipment that eliminates movement and deviation, including: A workbench (1), and a lifting plate (101) fixedly mounted on the workbench (1) and symmetrically arranged, wherein a tilting block (2) is fixed on the lifting plate (101); It is characterized by further comprising: A translation assembly is arranged on the lifting plate (101), and a connecting plate (7) is connected to the translation assembly; a lifting mechanism, arranged on the connecting plate (7), the lifting mechanism being connected to a rotating plate (17), a welding head (22) being fixed to one end of the rotating plate (17) away from the connecting plate (7), and the lifting mechanism being capable of adjusting the distance between the welding head (22) and the connecting plate (7) through the rotating plate (17); A follow-up rotating mechanism is arranged on the connecting plate (7) and connected to the lifting mechanism, the connecting plate (7) can drive the follow-up rotating mechanism to move to a position cooperating with the tilting block (2), and drive the rotating plate (17) to rotate a certain angle through the lifting mechanism; An impurity cleaning mechanism is arranged on the rotating plate (17) and is used to clean the surface of the square tube to be welded. The rotating plate (17) is also provided with a spacing control component, and the spacing control component is connected to symmetrically arranged pressure wheels (21). The spacing control component can adjust the spacing between the two pressure wheels (21); The lifting mechanism comprises a rotating sleeve (9) rotatably mounted on the connecting plate (7), a rotating rod (10) is slidably mounted in the rotating sleeve (9), the rotating rod (10) is fixedly connected to the rotating plate (17), a clamping groove (901) is provided on the outer wall of the rotating sleeve (9), and a driven component connected to the rotating rod (10) is provided on the connecting plate (7); The follow-up rotating mechanism comprises a guide groove provided on the outer wall of the rotating sleeve (9); a movable sleeve (15) is slidably mounted on the rotating sleeve (9); a limit block (1501) slidably connected to the guide groove is fixed to the inner wall of the movable sleeve (15); and a guide assembly connected to the movable sleeve (15) is provided on the connecting plate (7).

2. The square tube laser welding equipment for eliminating movement and deviation according to claim 1 is characterized in that: The translation assembly comprises a screw rod (3) rotatably mounted on the lifting plate (101), a first threaded sleeve (4) threadably mounted on the screw rod (3) and threadedly matched with the screw rod (3), a guide column (5) fixed on the lifting plate (101), a guide sleeve (6) slidably mounted on the guide column (5), and the guide sleeve (6) and the first threaded sleeve (4) are fixedly connected to the connecting plate (7).

3. The square tube laser welding equipment for eliminating movement and deviation according to claim 1 is characterized in that: The driven assembly comprises a cylinder (8) fixedly mounted on the connecting plate (7) and symmetrically arranged, a movable plate (11) sleeved on the rotating sleeve (9) is fixed on the output end of the cylinder (8), a limiting ring (1001) slidably connected to the clamping groove (901) is fixed on the rotating rod (10), and the limiting ring (1001) abuts against the movable plate (11).

4. The square tube laser welding equipment for eliminating movement and deviation according to claim 1 is characterized in that: The guide assembly comprises a support column (12) fixedly mounted on the connecting plate (7) and symmetrically arranged, a support plate (14) fixedly connected to the movable sleeve (15) being slidably mounted on the support column (12), limiting wheels (16) cooperating with the tilting block (2) being fixed at both ends of the support plate (14), and a first spring (13) abutting against the support plate (14) being sleeved on the support column (12).

5. The square tube laser welding equipment for eliminating movement and deviation according to claim 1 is characterized in that: The impurity cleaning mechanism comprises a supporting sleeve (23) fixedly mounted on the rotating plate (17) and symmetrically arranged, a movable rod (24) is slidably mounted in the supporting sleeve (23), a receiving plate (25) is fixed to the end of the movable rod (24), a movable wheel (27) symmetrically arranged is rotatably mounted on the side of the receiving plate (25) away from the movable rod (24), and a connecting component connected to the receiving plate (25) is arranged on the rotating plate (17).

6. The square tube laser welding equipment for eliminating movement and deviation according to claim 5 is characterized in that: The connection assembly comprises a second spring (26) sleeved on the movable rod (24), the two ends of the second spring (26) respectively abutting against the rotating plate (17) and the receiving plate (25), a moving contact (28) being fixed on the receiving plate (25), a stationary contact (29) cooperating with the moving contact (28) being fixed on the rotating plate (17), and an air supply pipe (30) being fixed on the rotating plate (17).

7. The square tube laser welding equipment for eliminating movement and deviation according to claim 1 is characterized in that: The spacing control component includes a slide groove (1701) opened on the rotating plate (17) and symmetrically arranged, a bidirectional screw rod (18) is rotatably installed on the rotating plate (17), a second threaded sleeve (19) symmetrically arranged is movably installed on the bidirectional screw rod (18), the second threaded sleeve (19) is threadedly matched with the bidirectional screw rod (18), a sliding plate (20) slidably connected to the slide groove (1701) is fixed to the side wall of the second threaded sleeve (19), and the sliding plate (20) is rotatably connected to the clamping wheel (21).

8. A welding method of a square tube laser welding device for eliminating movement and beating deviation, using the square tube laser welding device for eliminating movement and beating deviation as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: According to the position of the square tube, the rotating plate (17) is controlled to move by the lifting mechanism, so as to control the pressing wheel (21) to move to a position abutting against the square tube by the spacing control component; Step 2: Under the action of the translation assembly, the connecting plate (7) is driven to move, thereby driving the rotating plate (17) to move through the lifting mechanism, so as to perform welding processing on the other pipe through the welding head (22); Step 3: When the rotating plate (17) moves, it also drives the impurity cleaning mechanism to move, so as to clean the impurities on the surface of the other pipe before welding; Step 4: After welding is completed, under the action of the follow-up rotating mechanism, the rotating plate (17) is controlled to rotate through the lifting mechanism to control the clamping wheel to always be located in front of the welding head (22) in the moving direction.

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