A double-sided laser welding device for bimetallic band saw blade

Abstract

The application discloses a double-face laser welding device for a bimetallic band saw blade, and belongs to the technical field of bimetallic band saw blade welding, which comprises a workbench, a conveying mechanism, a clamp and a laser head. The conveying mechanism comprises double compression rollers arranged on the workbench. The clamp is arranged on the workbench along a feeding direction at intervals, and comprises a transverse limiting assembly and a vertical limiting assembly. The transverse limiting assembly comprises transverse limiting pieces arranged symmetrically on both sides of a feeding path. The vertical limiting assembly comprises two vertical limiting pieces for vertically limiting the bimetallic band saw blade on the feeding path. Two laser heads are respectively arranged on both sides of the feeding path. The double-face laser welding device for the bimetallic band saw blade can simultaneously weld the bimetallic band saw blade from both sides, can significantly improve the welding penetration and strength, can effectively reduce residual stress in a welding seam, can reduce welding deformation, and can improve the quality and stability of a welding position of the bimetallic band saw blade.

Description

Technical Field

[0001] This invention belongs to the field of bimetal band saw blade welding technology, specifically relating to a double-sided laser welding device for bimetal band saw blades. Background Technology

[0002] Bimetal band saw blades are sawing tools made by welding two metals together, and they have come to play a vital role in modern industry. These blades combine the advantages of both metals, ensuring excellent hardness and wear resistance, allowing the saw blade to maintain its sharp cutting performance even during prolonged, high-intensity cutting operations. They also improve the stability and durability of the saw blade during the cutting process. High-quality welding not only ensures a strong bond between the two metals, preventing breakage or detachment during cutting, but also maximizes the lifespan of the saw blade.

[0003] Welding methods for bimetal band saw blades generally include laser welding, argon arc welding, and electron beam vacuum welding. Traditional welding processes for bimetal band saw blades, such as arc welding and resistance welding, are relatively slow, limiting production efficiency, leading to longer production cycles, increased production costs, and difficulty in meeting growing market demands. These traditional welding methods are prone to uneven heating in the weld area, resulting in significant thermal stress on the saw blade. This can cause deformation, breakage, or detachment of the joint between the two metals during subsequent use. Summary of the Invention

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a double-sided laser welding device for bimetal band saw blades, which can simultaneously weld from both transverse sides of the bimetal band saw blade. This not only significantly improves the penetration and strength of the weld, but also effectively reduces residual stress in the weld and reduces welding deformation, thereby improving the quality and stability of the welded part of the bimetal band saw blade.

[0005] To achieve the above objectives, the present invention provides a double-sided laser welding device for bimetallic band saw blades, comprising:

[0006] A worktable surface, wherein a feeding path for conveying a bimetal band saw blade is formed on the worktable surface, and a conveying mechanism and at least two clamps are sequentially arranged along the feeding path on the worktable surface;

[0007] The conveying mechanism includes double pressure rollers for driving the bimetal band saw blade located on the feeding path to move along the feeding direction;

[0008] Each of the clamps is spaced apart along the feeding path and includes a lateral limiting component and a vertical limiting component;

[0009] The transverse limiting assembly comprises transverse limiting members symmetrically arranged on both sides of the feeding path, for limiting the transverse movement of the bimetallic band saw blade on the feeding path.

[0010] The vertical limiting assembly comprises two vertical limiting members for abutting against the top end and the bottom end of the bimetallic band saw blade on the feeding path respectively, so as to press the first metal band against the top surface of the second metal band.

[0011] Two laser heads are separately arranged on both sides of the feeding path, and each of the laser heads is located between two adjacent clamps, for simultaneously welding the seams of the two side surfaces of the bimetallic band saw blade on the feeding path.

[0012] As a further preferred embodiment of the present application, the double pressing rollers comprise a pair of conveying rollers symmetrically arranged on both sides of the feeding path, and each of the conveying rollers is arranged for abutting against the two side surfaces of the bimetallic band saw blade on the feeding path; and at least one of the conveying rollers is a driving roller for driving the bimetallic band saw blade on the feeding path to move in the feeding direction.

[0013] As a further preferred embodiment of the present application, the conveying mechanism further comprises a plurality of guide rollers arranged along the feeding path at intervals, for vertically supporting the bimetallic band saw blade on the feeding path.

[0014] A guide pressing rod is arranged corresponding to each of the guide rollers, for vertically limiting the bimetallic band saw blade on each of the guide rollers.

[0015] As a further preferred embodiment of the present application, the conveying mechanism further comprises a belt pulley arranged at the end of each of the guide rollers and a driven belt connecting the belt pulleys.

[0016] At least one of the guide rollers is provided with a driving assembly, and the driving assembly can drive the guide roller to rotate, thereby driving the driven belt to rotate, so as to drive other guide rollers to rotate, and provide the bottom of the bimetallic band saw blade on each of the guide rollers with a longitudinal driving force.

[0017] As a further preferred embodiment of the present application, the transverse limiting assembly comprises limiting rollers symmetrically arranged on both sides of the feeding path at intervals in the transverse direction, and each of the limiting rollers is arranged for abutting against the two lateral wall surfaces of the bimetallic band saw blade on the feeding path, for limiting the transverse movement of the bimetallic band saw blade on the feeding path.

[0018] As a further preferred embodiment of the present application, the two vertical limiting members are two limiting rods arranged at intervals in the vertical direction, and each of the limiting rods is provided with a rotating bearing at the position for abutting against the bimetallic band saw blade, for reducing the friction force that needs to be overcome when the bimetallic band saw blade passes through the vertical limiting assembly.

[0019] As a further preferred embodiment of the present application, at least one spring extending in the vertical direction is arranged between the two limiting rods, and the position of the at least one limiting rod in the vertical direction is adjustable, so as to limit the bimetallic band saw blade of different vertical dimensions.

[0020] As a further preferred embodiment of the present application, the clamp further comprises two first side plates, two second side plates, a top plate and a bottom plate; wherein,

[0021] The two first side plates are arranged in the lateral direction, and the ends of the two limiting rods are fixedly installed on the two first side plates, respectively.

[0022] The two second side plates are arranged in the feeding direction, and the lateral ends of each second side plate are installed on the first side plates, and openings are arranged on the two second side plates for allowing the bimetallic band saw blade on the feeding path to pass through.

[0023] The top plate and the bottom plate are arranged at the top and the bottom of each first side plate and each second side plate, respectively, and each limiting roller is rotatably connected between the top plate and the bottom plate.

[0024] As a further preferred embodiment of the present application, a welding table is further included, and a laser driving mechanism corresponding to the laser head is further arranged.

[0025] The welding table is arranged at the bottom of the workbench, and each laser head is correspondingly provided with a separate laser driving mechanism; the laser driving mechanism comprises a moving driving assembly and a rotating driving assembly, the moving driving assembly is capable of driving the laser head to move in the longitudinal direction, the lateral direction and the vertical direction, respectively, and the rotating driving assembly is capable of driving the laser head to rotate.

[0026] As a further preferred embodiment of the present application, a plurality of lifting assemblies are arranged between the workbench and the welding table, so as to drive the workbench to reciprocate in the vertical direction.

[0027] Overall, the above technical solutions conceived by the present application have the following beneficial effects compared with the prior art:

[0028] (1) The double-sided laser welding device for the bimetallic band saw blade comprises a workbench, a conveying mechanism, at least two clamps and two laser heads. The conveying mechanism comprises double compression rollers arranged on the workbench. The clamps are arranged on the workbench along the feeding direction at intervals, and each clamp comprises a transverse limiting component and a vertical limiting component. The transverse limiting component comprises transverse limiting members symmetrically arranged on both sides of the feeding path, for limiting the movement of the bimetallic band saw blade in the transverse direction on the feeding path; the vertical limiting component comprises two vertical limiting members for limiting the bimetallic band saw blade in the vertical direction on the feeding path, for pressing the first metal band against the top surface of the second metal band. The two laser heads are respectively located on both sides of the feeding path, and each laser head is located between two adjacent clamps. The double-sided laser welding device for the bimetallic band saw blade can simultaneously weld from both sides of the bimetallic band saw blade, which can significantly improve the penetration and strength of the welding, effectively reduce the residual stress in the weld, reduce the welding deformation, and further improve the quality and stability of the welded part of the bimetallic band saw blade.

[0029] (2) The double-sided laser welding device for the bimetallic band saw blade has simple structure, stable welding and good adaptability. By arranging a plurality of clamps comprising a vertical limiting component and a transverse limiting component, and combining the rotating bearing arranged on the limiting rod, the clamps can not only realize stable limiting of the bimetallic band saw blade in the transverse and vertical directions, and ensure that the first metal band is stably placed on the second metal band, but also can reduce the friction between the bimetallic band saw blade and the clamps as much as possible during the limiting process, thereby reducing the resistance when feeding the bimetallic band saw blade, and enabling the bimetallic band saw blade to be smoothly conveyed along the feeding path.

[0030] (3) The double-sided laser welding device for the bimetallic band saw blade comprises a plurality of springs in a stretched state arranged between the two limiting rods, and at least one limiting rod in a position-adjustable state in the vertical direction, so that the vertical limiting component can form stable limiting and clamping of bimetallic band saw blades of different sizes.

[0031] (4) The double-sided laser welding device for the bimetallic band saw blade comprises laser heads arranged on both sides of the bimetallic band saw blade, and a laser driving mechanism capable of three-axis movement and plane rotation is used to drive the laser heads, so that the laser heads can be accurately welded to the seams on both sides of the bimetallic band saw blade under the driving of the laser driving mechanism, thereby improving the penetration and strength between the first metal band and the second metal band, effectively reducing the residual stress in the weld, reducing the welding deformation, and having good popularization prospect and reference value. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1is a perspective view of a double-sided laser welding device for a bimetallic band saw blade in an embodiment of the present application;

[0033] Figure 2 is a perspective view of another view of a double-sided laser welding device for a bimetallic band saw blade in an embodiment of the present application;

[0034] Figure 3 is a perspective view of a clamp and a conveying mechanism of a double-sided laser welding device for a bimetallic band saw blade in an embodiment of the present application;

[0035] Figure 4 is a perspective view of a clamp of a double-sided laser welding device for a bimetallic band saw blade in an embodiment of the present application;

[0036] Figure 5 is a sectional view at a position of a long bolt of a double-sided laser welding device for a bimetallic band saw blade in an embodiment of the present application;

[0037] Figure 6 is a sectional view at a position of a limiting rod of a double-sided laser welding device for a bimetallic band saw blade in an embodiment of the present application;

[0038] Figure 7 is a perspective view of a laser driving mechanism of a double-sided laser welding device for a bimetallic band saw blade in another embodiment of the present application;

[0039] Figure 8 is a perspective view of a laser driving mechanism of a double-sided laser welding device for a bimetallic band saw blade in another embodiment of the present application.

[0040] In all the drawings, the same reference signs represent the same technical features, specifically:

[0041] 1, conveying mechanism; 11, double pressing roller; 12, guide roller; 13, guide pressing rod; 14, support plate; 15, driving belt; 16, driven belt;

[0042] 2, clamp; 21, first side plate; 22, second side plate; 23, sub-top plate; 24, sub-bottom plate; 25, limiting rod; 26, rotating bearing; 27, spring; 28, accommodating blind hole; 29, long screw rod; 210, limiting roller;

[0043] 3, laser driving mechanism; 31, longitudinal screw; 32, first sliding block; 33, vertical screw; 34, second sliding block; 35, scale; 36, transverse screw; 37, third sliding block; 38, rotating motor;

[0044] 4, laser head;

[0045] 5, workbench surface;

[0046] 6, welding bench surface;

[0047] 7. A bimetallic band saw blade; 71. First metal band; 72. Second metal band. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0050] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0053] Embodiments:

[0054] Please refer to Figures 1-8 The double-sided laser welding device for the bimetallic band saw blade in the preferred embodiment of the present application can simultaneously weld from the two lateral sides of the bimetallic band saw blade 7, which not only can significantly improve the penetration and strength of the welding, but also can effectively reduce the residual stress in the weld, reduce the welding deformation, and further improve the quality and stability of the welded part of the bimetallic band saw blade 7.

[0055] Specifically, in the present embodiment, the double-sided laser welding device comprises a workbench 5, a conveying mechanism 1, at least two clamps 2 and two laser heads 4. Among them, the workbench 5 is formed with a feeding path for conveying the bimetallic band saw blade 7, and the two metal bands are vertically butted on the feeding path. The workbench 5 is sequentially provided with the conveying mechanism 1 and at least two clamps 2 along the feeding path, and the conveying mechanism 1 comprises double compression rollers 11, so that the double-sided laser welding device can convey the bimetallic band saw blade 7 along the feeding direction through the conveying mechanism 1.

[0056] Each clamp 2 is arranged in the feeding direction and is used to form a limit for the bimetallic band saw blade 7 on the feeding path in the lateral and vertical directions, so as to limit the first metal band 71 in the bimetallic band saw blade 7 on the top surface of the second metal band 72. The clamp 2 comprises a lateral limiting assembly and a vertical limiting assembly. The lateral limiting assembly comprises lateral limiting members symmetrically arranged on both sides of the feeding path, which are used to limit the movement of the bimetallic band saw blade 7 on the feeding path in the lateral direction. The vertical limiting assembly comprises two vertical limiting members, which are respectively abutted on the top end and the bottom end of the bimetallic band saw blade 7 on the feeding path, so as to compress the first metal band 71 on the top surface of the second metal band 72. The two laser heads 4 are respectively located on both sides of the feeding path, and each laser head 4 is located between two adjacent clamps, which are used to simultaneously weld the seams of the two side surfaces of the bimetallic band saw blade 7 on the feeding path.

[0057] It is worth mentioning that in the embodiment, the extending direction of the bimetallic band saw blade 7 is longitudinal, the direction perpendicular to the longitudinal direction in the horizontal plane is transverse, and the direction perpendicular or vertical to the horizontal plane is vertical. Further, the size of the first metal band 71 is smaller than that of the second metal band 72, and the top surface of the second metal band 72 is a top end surface parallel to the horizontal plane. The two side surfaces of the bimetallic band saw blade 7 are side wall surfaces perpendicular to the horizontal plane and extending in the longitudinal direction.

[0058] Further, in the embodiment, the double pressing roller 11 includes a pair of conveying rollers arranged on both sides of the feeding path, and the two conveying rollers are respectively used for abutting against the two side surfaces of the bimetallic band saw blade 7 located on the feeding path, and at least one of the conveying rollers is a driving roller used for driving the bimetallic band saw blade 7 located on the feeding path to move in the feeding direction. Preferably, both of the two conveying rollers are driving rollers, the rotating directions of the two conveying rollers are opposite, and the rotating directions of the two conveying rollers at the positions in contact with the bimetallic band saw blade 7 are the same as the feeding direction. Further preferably, the rotating shafts of the conveying rollers are arranged on the workbench surface 5 in the vertical direction.

[0059] Further preferably, in the embodiment, the conveying mechanism 1 further includes a plurality of guide rollers 12 arranged at intervals along the feeding path, which are used for vertically supporting the bimetallic band saw blade 7 located on the feeding path to prevent the bimetallic band saw blade 7 from being laterally unstable on the feeding path, and the bimetallic band saw blade 7 is in rolling friction when passing through each guide roller 12, which can reduce the feeding resistance.

[0060] Specifically, at least one guide roller 12 is arranged on each of the two sides of the double pressing roller 11 and the clamps 2 in the feeding direction.

[0061] Further, a guide pressing rod 13 is arranged corresponding to each guide roller 12, which is used for vertically limiting the bimetallic band saw blade 7 located on each guide roller 12, so as to ensure that the first metal band 71 can be always pressed against the top of the second metal band 72, and the bimetallic band saw blade 7 can stably enter and exit the double pressing roller 11 and / or the clamps 2.

[0062] In actual use, the guide rollers 12 can rotate around the shafts, and the multiple groups of guide pressing rods 13 and guide rollers 12 distributed on the feeding path can form stable limiting of the first metal band 71 and the second metal band 72 in the vertical direction.

[0063] Further, the work platform is provided with support plates 14 on both sides along the feeding path, the two support plates 14 extend longitudinally, and the double pressing rollers 11 and the clamps 2 are arranged between the two support plates 14, and the plurality of guide rollers 12 are arranged on the two support plates 14 in a longitudinal direction. Correspondingly, the conveying mechanism 1 further comprises pulleys arranged at the ends of each guide roller 12 and a driven belt 16 connected with the pulleys, and at least one guide roller 12 is provided with a driving assembly, the driving assembly can drive the guide roller 12 to rotate and further drive the driven belt 16 to rotate, thereby driving other guide rollers 12 to rotate, so as to provide a longitudinal driving force for the bottom of the bimetallic band saw blade 7 located on the guide rollers 12.

[0064] Specifically preferably, the two ends of the guide roller 12 provided with the driving assembly are provided with pulleys, the driving assembly comprises a driving belt 15 and a belt motor, the belt motor is located at the bottom of the welding table 6, and the belt motor is connected with the pulley at one end of the guide roller provided with two pulleys through the driving belt 15, so as to drive the guide roller 12. Preferably, the driving belt 15 extends in a vertical direction.

[0065] More specifically, the guide pressing rod 13 is provided with a support rod at both ends, the support rod is fixedly installed on the support plate 14, and both ends of the guide pressing rod 13 are fixedly installed on the support rod.

[0066] Further preferably, in the embodiment, the transverse limiting assembly comprises limiting rollers 210 arranged on both sides of the feeding path in a transverse direction, the two limiting rollers 210 can abut against the transverse two side walls of the bimetallic band saw blade 7 located on the feeding path, so as to limit the bimetallic band saw blade 7 located on the feeding path in a transverse direction.

[0067] Preferably, the longitudinal two sides of the transverse limiting assembly of each clamp 2 are provided with vertical limiting assemblies, so that the clamp 2 forms a stable clamping surface for the bimetallic band saw blade 7 entering the clamp 2, and the first metal band 71 and the second metal band 72 after the clamp can be stably connected, so that the joint of the bimetallic band saw blade 7 between the two clamps 2 is always kept in the plane where the clamping surface is located, which facilitates the two laser heads to simultaneously weld the bimetallic saw blade from both sides.

[0068] Further, the two vertical limiting members are preferably two limiting rods 25 arranged in a vertical direction, and each limiting rod 25 is provided with a rotating bearing 26 at the position abutting against the bimetallic band saw blade 7, so that when the limiting rod 25 limits the bimetallic band saw blade 7 in a vertical direction, the sliding friction between the bimetallic band saw blade 7 and the limiting rod 25 can be converted into rolling friction, so as to reduce the frictional force that needs to be overcome by the bimetallic band saw blade 7 when passing through the vertical limiting assembly, thereby reducing the resistance when feeding the bimetallic band saw blade 7, so that the bimetallic band saw blade 7 can be stably conveyed along the feeding path.

[0069] More specifically, in order to ensure that the vertical limiting assembly can adapt to bimetallic band saw blades 7 of different sizes, in the embodiment, at least one spring 27 extending in the vertical direction is arranged between the two limiting rods 25, and the position of at least one limiting rod 25 in the vertical direction is adjustable, so that when the two limiting rods 25 press the bimetallic band saw blades 7 of different sizes, the two pressing rods can always press the vertical two end faces of the bimetallic band saw blades 7 through the force of the spring 27. Preferably, each spring 27 is in an elongated state to facilitate the provision of force for pressing the bimetallic band saw blades 7.

[0070] Further, in the embodiment, the clamp 2 includes two first side plates 21, two second side plates, a top plate and a bottom plate. Among them, the two first side plates 21 are arranged in a transverse direction, and the two first side plates 21 are parallel to the side face of the bimetallic band saw blade 7 on the feeding path, and the end portions of the two limiting rods 25 are fixedly installed on the two first side plates 21. The two second side plates are arranged in the feeding direction, and the transverse two ends of each second side plate are installed on the first side plate 21, and the two second side plates are provided with openings for the bimetallic band saw blade 7 to pass through. The top plate and the bottom plate are arranged at the top and the bottom of each first side plate 21 and each second side plate, and each limiting roller 210 is rotatably connected between the top plate and the bottom plate.

[0071] Further preferably, in the embodiment, a waist-shaped hole extending through the plate body is formed at the position of each first side plate 21 corresponding to the limiting rod 25, and the limiting rod 25 is embedded in or passes through the waist-shaped hole, so that the limiting rod 25 can be adjusted in position in the vertical direction.

[0072] Specifically, when the limiting rod 25 is embedded in the waist-shaped hole, a guiding assembly that can guide in the vertical direction is arranged on the limiting rod 25 and the side wall surface of the waist-shaped hole, and the guiding assembly is preferably a guiding slider and a guiding groove, so that the limiting rod 25 can form accurate reciprocating motion in the vertical direction. When the limiting rod 25 passes through the waist-shaped hole, a nut is arranged at the position of the limiting rod 25 extending out of the waist-shaped hole, so as to avoid the limiting rod 25 from sliding out of the waist-shaped hole.

[0073] More specifically, a containing blind hole 28 extending in the vertical direction is formed in each of the two first side plates 21, and the opening of the containing blind hole 28 communicates with the waist-shaped hole, and one end of the spring 27 is fixed to the bottom end face of the containing blind hole 28, and the other end of the spring 27 extends in the vertical direction and extends out of the opening, and the extending end of the spring 27 is fixedly connected with the limiting rod 25 at the waist-shaped hole.

[0074] Further, in the embodiment, each of the second side plates comprises two second sub-side plates 22 which are spaced apart in the lateral direction and are fixed to the first side plates 21, thereby forming an opening between the second sub-side plates 22 in the feeding direction. Preferably, the clamp 2 further comprises a long screw 29, and threaded holes are formed in the second sub-side plates 22 and the first side plates 21 in the lateral direction. In actual use, the long screw 29 penetrates the threaded holes in the second sub-side plates 22 and the first side plates 21, thereby connecting the second sub-side plates 22 and the first side plates 21.

[0075] Further preferably, in the embodiment, the top plate comprises two sub-top plates 23 which are spaced apart in the lateral direction, and the bottom plate comprises two sub-bottom plates 24 which are spaced apart in the lateral direction. The sub-top plates 23 are fixed to the top of the first side plates 21 and the second side plates, and the sub-bottom plates 24 are fixed to the bottom of the first side plates 21 and the second side plates. Meanwhile, a limiting roller 210 is arranged between the sub-top plate 23 and the sub-bottom plate 24 on the same side in the lateral direction. Preferably, the limiting roller 210 is rotatably connected to the top and the bottom of the sub-top plate 23 and the sub-bottom plate 24.

[0076] More specifically, bolts are used to connect the first side plates 21, the second side plates, the top plate and the bottom plate, thereby detachably connecting the plates.

[0077] Further, in the embodiment, the double-sided laser welding device further comprises a welding table 6 and a laser driving mechanism 3 corresponding to the laser head 4. The welding table 6 is arranged at the bottom of the worktable 5, and each laser head 4 is provided with a separate laser driving mechanism 3. The laser driving mechanism 3 is arranged on the welding table 6 and can drive the laser head 4 to move, so that the laser head 4 can align with the joint between the first metal strip 71 and the second metal strip 72.

[0078] Further preferably, a plurality of lifting members are arranged between the welding table 6 and the worktable 5, and are used to drive the worktable 5 to move up and down in the vertical direction.

[0079] Further, in the embodiment, the laser driving mechanism 3 comprises a moving driving assembly and a rotating driving assembly.

[0080] The moving driving assembly comprises a longitudinal driving unit, a vertical driving unit and a transverse driving unit. The longitudinal driving unit comprises a longitudinal screw 31 extending in the longitudinal direction and a first sliding block 32 which is movable in the longitudinal direction under the driving of the longitudinal screw 31. The vertical driving unit comprises a vertical screw 33 and a second sliding block 34, the bottom end of the vertical screw 33 is fixedly installed on the first sliding block 32, and the second sliding block 34 is movable in the vertical direction under the driving of the vertical screw 33. The transverse driving unit comprises a transverse screw 36 and a third sliding block 37, the transverse screw 36 is fixedly installed on the second sliding block 34 at the end away from the feeding path, and the third sliding block 37 is movable in the transverse direction under the driving of the transverse screw 36.

[0081] Further, a scale 35 is arranged on the vertical screw 33 for reading the vertical position of the third sliding block 37. Preferably, scales are arranged on the longitudinal screw 31 and the transverse screw 36 for reading the longitudinal position of the first sliding block 32 and the transverse position of the second sliding block 34 respectively, so as to realize accurate positioning of the laser head position. Further, the first sliding block, the second sliding block and the third sliding block are respectively driven by corresponding servo motors.

[0082] Meanwhile, an angle steel is arranged on the third sliding block 37, one branch plate of the angle steel is fixedly installed on the third sliding block 37, and the other branch plate of the angle steel is arranged in parallel, and a rotating driving assembly is fixedly installed on the parallel branch plate. Further, the rotating driving assembly comprises a rotating motor 38, the rotating motor 38 is fixedly installed on the bottom end face of the branch plate, and the rotating shaft of the rotating motor 38 penetrates through the branch plate and is fixedly connected with the laser head 4.

[0083] Preferably, the laser head 4 is driven to rotate by the rotating motor 38, so that the laser beams on the two sides of the bimetallic band saw blade 7 keep a clamping angle of 5-8°, avoiding energy loss or workpiece penetration caused by coaxial collision of the two laser beams.

[0084] The double-sided laser welding device for the bimetallic band saw blade has the advantages that the structure is simple, the welding is stable, and the adaptability is good. The clamps 2 are provided with vertical limiting components and horizontal limiting components, and the rotating bearing 26 is arranged on the limiting rod 25. The clamps 2 can not only realize stable limiting of the bimetallic band saw blade 7 on the feeding path in the horizontal direction and the vertical direction, and ensure that the first metal band 71 is stably arranged on the second metal band 72, but also can reduce the friction between the bimetallic band saw blade 7 and the clamps 2 as much as possible during the limiting process, thereby reducing the resistance when the bimetallic band saw blade 7 is fed, and enabling the bimetallic band saw blade 7 to be smoothly conveyed along the feeding path. Meanwhile, the laser head 4 is arranged on both sides of the feeding path, and the laser driving mechanism 3 capable of three-axis movement and plane rotation is adopted to drive the laser head 4. The laser head 4 can accurately weld the seams on the two sides of the bimetallic band saw blade 7 on the feeding path under the driving of the laser driving mechanism 3, thereby improving the penetration and strength between the first metal band 71 and the second metal band 72, effectively reducing the residual stress in the weld, reducing the welding deformation, and having good popularization prospect and reference value.

[0085] Those skilled in the art will easily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-sided laser welding device for a bimetallic band saw blade, characterized in that, The utility model provides a kind of welding device for double metal band saw blade, including: Worktop, the worktop is formed with the feeding path for conveying double metal band saw blade, and the worktop is sequentially provided with conveying mechanism and at least two clamps along feeding path; The conveying mechanism includes double compression roller, for driving double metal band saw blade located on the feeding path moves along the feeding direction; Each of the clamps is spaced along the feeding path, including transverse limiting component and vertical limiting component; The transverse limiting component includes transverse limiting piece symmetrically arranged on both sides of the feeding path, for limiting the movement of double metal band saw blade located on the feeding path along the transverse direction; The vertical limiting component includes two vertical limiting pieces, for respectively abutting the top end and bottom end of double metal band saw blade located on the feeding path, to press the first metal band on the top surface of the second metal band; Two laser heads are separately arranged on both sides of the feeding path, and each of the laser heads is located between two adjacent clamps, for simultaneously welding the joint surface of double metal band saw blade located on the feeding path; Corresponding to the laser head, a laser driving mechanism is provided, and each of the laser heads is correspondingly provided with a separate laser driving mechanism, the laser driving mechanism includes a moving driving assembly and a rotating driving assembly, the moving driving assembly can drive the laser head to move along the longitudinal direction, transverse direction and vertical direction, and the rotating driving assembly can drive the laser head to rotate.

2. The double-sided laser welding device for a bimetallic band saw blade according to claim 1, characterized in that The double compression roller includes a pair of conveying rollers arranged on both sides of the feeding path, and the two conveying rollers are respectively used for abutting the two side surfaces of double metal band saw blade located on the feeding path;And at least one of the conveying rollers is a driving roller, for driving double metal band saw blade located on the feeding path to move along the feeding direction.

3. The apparatus for double-sided laser welding of bimetallic band saw blades according to claim 1, characterized in that The conveying mechanism further includes a plurality of guide rollers spaced along the feeding path, for vertically supporting double metal band saw blade located on the feeding path; Corresponding to each of the guide rollers, a guide pressing rod is provided, for vertically limiting double metal band saw blade located on each of the guide rollers.

4. The double-sided laser welding device for a bimetallic band saw blade according to claim 3, characterized in that The conveying mechanism further includes a pulley arranged at the end of each guide roller and a driven belt connecting the pulleys; At least one guide roller is provided with a driving assembly, which can drive the guide roller to rotate and in turn drive the driven belt to rotate, so as to drive other guide rollers to rotate, and provide longitudinal driving force for the bottom of double metal band saw blade located on each of the guide rollers.

5. The apparatus for double-sided laser welding of bimetallic band saw blades according to any one of claims 1 to 4, characterized in that The transverse limiting component includes limiting rollers spaced along the transverse direction and arranged on both sides of the feeding path, and the two limiting rollers can respectively abut the transverse two side walls of double metal band saw blade located on the feeding path, for limiting the transverse movement of double metal band saw blade located on the feeding path.

6. The double-sided laser welding device for a bimetallic band saw blade according to claim 5, characterized in that The two vertical limiting pieces are two limiting rods spaced along the vertical direction, and each of the limiting rods is provided with a rotating bearing for abutting double metal band saw blade, for reducing the friction force to be overcome when double metal band saw blade passes through the vertical limiting component.

7. The double-sided laser welding device for a bimetallic band saw blade according to claim 6, characterized in that At least one spring extending in vertical direction is arranged between the two limiting rods, and the position of the at least one limiting rod in vertical direction is adjustable, so as to limit the bimetallic band saw blade with different vertical dimensions.

8. The double-sided laser welding device for a bimetallic band saw blade according to claim 7, characterized in that The clamp further comprises two first side plates, two second side plates, a top plate and a bottom plate, wherein, The two first side plates are arranged in transverse direction, and the ends of the two limiting rods are fixedly installed on the two first side plates, respectively. The two second side plates are arranged in the feeding direction, and the transverse ends of each second side plate are installed on the first side plates, and openings are arranged on the two second side plates, so as to allow the bimetallic band saw blade on the feeding path to pass through. The top plate and the bottom plate are arranged on the top and bottom of each first side plate and each second side plate, respectively, and each limiting roller is rotatably connected between the top plate and the bottom plate.

9. The apparatus for double-sided laser welding of bimetallic band saw blades according to any one of claims 1 to 4, 6 to 8, characterized in that A welding table is further arranged on the bottom of the workbench.

10. The double-sided laser welding device for a bimetallic band saw blade according to claim 9, characterized in that A plurality of lifting members are arranged between the workbench and the welding table, so as to drive the workbench to reciprocate in vertical direction.

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