Double-sided laser welding device for bimetal band saw blade

Abstract

The invention discloses a double-sided laser welding device for a bimetal band saw blade, which belongs to the technical field of bimetal band saw blade welding and comprises a working table, a conveying mechanism, a clamp and a laser head. The conveying mechanism comprises double pressing rollers arranged on the working table. The clamps are arranged on the working table at intervals in the feeding direction, and each clamp comprises a transverse limiting assembly and a vertical limiting assembly. The transverse limiting assembly comprises transverse limiting pieces symmetrically arranged on the two sides of the feeding path. The vertical limiting assembly comprises two vertical limiting pieces for vertically limiting the bimetal band saw blade on the feeding path. The two laser heads are located on the two sides of the feeding path correspondingly. According to the double-face laser welding device for the bimetal band saw blade, welding can be conducted from the two transverse sides of the bimetal band saw blade at the same time, the fusion depth and strength of welding can be remarkably improved, residual stress in a welding seam can be effectively reduced, welding deformation is reduced, and the quality and stability of the welding position of the bimetal band saw blade are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of double-metal band saw blade welding, and particularly relates to a double-face laser welding device for a double-metal band saw blade. BACKGROUND

[0002] A double-metal band saw blade is a cutting tool formed by combining two metals through a welding process, which has occupied a very important position in the modern industrial field. This band saw blade combines the advantages of two metal materials, ensuring excellent hardness and wear resistance, allowing the saw blade to remain sharp in cutting performance during long-term and high-intensity cutting operations, while improving the stability and durability of the saw blade during cutting. High-quality welding not only ensures the full combination of the two metal materials, avoiding cracking or falling during cutting, but also maximizes the service life of the saw blade.

[0003] The welding method of a double-metal band saw blade is generally divided into laser welding, argon arc welding, electron beam vacuum welding, etc. In traditional double-metal band saw blade welding processes, such as electric arc welding and resistance welding, the welding speed is relatively slow, which restricts production efficiency, leading to an increase in production cycle and production cost, and is difficult to meet the growing market demand. These traditional welding methods are prone to uneven heating in the welding area, which in turn causes the saw blade to generate a large thermal stress, resulting in deformation, cracking or falling of the two metal combination parts during subsequent use. SUMMARY

[0004] In view of one or more of the above defects or improvement needs of the prior art, the present application provides a double-face laser welding device for a double-metal band saw blade, which can simultaneously weld from both sides of the double-metal band saw blade, not only significantly improving the penetration and strength of the welding, but also effectively reducing the residual stress in the weld, reducing welding deformation, and thus improving the quality and stability of the welded part of the double-metal band saw blade.

[0005] To achieve the above-mentioned purpose, the present application provides a double-face laser welding device for a double-metal band saw blade, comprising: a workbench surface, a feeding path for conveying a double-metal band saw blade is formed on the workbench surface, a conveying mechanism and at least two clamps are sequentially arranged on the workbench surface along the feeding path; the conveying mechanism comprises double compression rollers for driving the double-metal band saw blade on the feeding path to move in the feeding direction; each clamp is arranged at intervals along the feeding path and 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 double-metal band saw blade on the feeding path in the transverse direction; 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; Two laser heads are arranged on the two sides of the feeding path respectively, and each of the laser heads is located between two adjacent clamps, and is used for simultaneously welding the seams on the two side surfaces of the bimetallic band saw blade on the feeding path.

[0006] As a further preferred embodiment of the present application, the double pressing rollers comprise a pair of conveying rollers arranged on the two sides of the feeding path respectively, and the two conveying rollers are used for abutting against the two side surfaces of the bimetallic band saw blade on the feeding path respectively; and at least one of the conveying rollers is a driving roller used for driving the bimetallic band saw blade on the feeding path to move in the feeding direction.

[0007] As a further preferred embodiment of the present application, the conveying mechanism further comprises a plurality of guide rollers arranged at intervals along the feeding path, and the guide rollers are used for vertically supporting the bimetallic band saw blade on the feeding path. Each of the guide rollers is provided with a guide pressing rod used for vertically limiting the bimetallic band saw blade on the guide roller.

[0008] As a further preferred embodiment of the present application, the conveying mechanism further comprises a pulley arranged at the end of each guide roller and a driven belt connecting the pulleys. 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 guide roller with a driving force in the longitudinal direction.

[0009] As a further preferred embodiment of the present application, the transverse limiting assembly comprises two limiting rollers arranged at intervals along the transverse direction on the two sides of the feeding path, and the two limiting rollers can abut against the two transverse side walls of the bimetallic band saw blade on the feeding path respectively, so as to transversely limit the bimetallic band saw blade on the feeding path.

[0010] As a further preferred embodiment of the present application, the two vertical limiting members are two limiting rods arranged at intervals along the vertical direction, and each limiting rod is provided with a rotating bearing at the position for abutting against the bimetallic band saw blade, so as to reduce the friction force that needs to be overcome when the bimetallic band saw blade passes through the vertical limiting assembly.

[0011] As a further preferred embodiment of the present application, at least one spring extending along the vertical direction is arranged between the two limiting rods, and the position of at least one of the limiting rods in the vertical direction is adjustable, so as to limit the bimetallic band saw blade with different vertical dimensions.

[0012] 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, The two first side plates are spaced apart in the 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 spaced apart in the feeding direction, and the transverse ends of each second side plate are installed on the first side plates, and openings are provided on the two second side plates for allowing the bimetallic band saw blade on the feeding path to pass through; The top plate and the bottom plate are respectively provided at the top and the bottom of each first side plate and each second side plate, and each limiting roller is rotatably connected between the top plate and the bottom plate.

[0013] As a further preferred embodiment of the present application, a welding table is further provided, and a laser driving mechanism corresponding to the laser head is further provided; The welding table is provided at the bottom of the workbench, and each laser head is 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 can drive the laser head to move in the longitudinal direction, the transverse direction and the vertical direction, respectively, and the rotating driving assembly can drive the laser head to rotate.

[0014] As a further preferred embodiment of the present application, a plurality of lifting members are provided between the workbench and the welding table, for driving the workbench to reciprocate in the vertical direction.

[0015] Overall, the above technical solutions conceived by the present application have the following beneficial effects compared with the prior art: (1) The double-sided laser welding device for bimetallic band saw blades of the present application comprises a workbench, a conveying mechanism, at least two clamps and two laser heads. The conveying mechanism comprises double compression rollers provided on the workbench. The clamps are spaced apart in the feeding direction on the workbench, and each clamp comprises a transverse limiting assembly and a vertical limiting assembly. The transverse limiting assembly comprises transverse limiting members symmetrically provided 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 assembly comprises two vertical limiting members for limiting the bimetallic band saw blade in the vertical direction, 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 bimetallic band saw blades can simultaneously weld from both sides of the bimetallic band saw blade, which not only significantly improves the penetration and strength of the weld, but also effectively reduces the residual stress in the weld, reduces the welding deformation, and further improves the quality and stability of the welded part of the bimetallic band saw blade.

[0016] (2) 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 are provided with vertical limiting components and horizontal limiting components, and the rotating bearings are arranged on the limiting rods. The clamps can realize stable limiting of the bimetallic band saw blade in the horizontal direction and the vertical direction, ensure that the first metal band is stably arranged on the second metal band, and 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 the bimetallic band saw blade is fed, and enabling the bimetallic band saw blade to be smoothly conveyed along the feeding path.

[0017] (3) 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 are provided with vertical limiting components and horizontal limiting components, and the rotating bearings are arranged on the limiting rods. The clamps can realize stable limiting of the bimetallic band saw blade in the horizontal direction and the vertical direction, ensure that the first metal band is stably arranged on the second metal band, and 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 the bimetallic band saw blade is fed, and enabling the bimetallic band saw blade to be smoothly conveyed along the feeding path.

[0018] (4) 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 are provided with vertical limiting components and horizontal limiting components, and the rotating bearings are arranged on the limiting rods. The clamps can realize stable limiting of the bimetallic band saw blade in the horizontal direction and the vertical direction, ensure that the first metal band is stably arranged on the second metal band, and 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 the bimetallic band saw blade is fed, and enabling the bimetallic band saw blade to be smoothly conveyed along the feeding path. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the double-sided laser welding device for the bimetallic band saw blade in an embodiment of the present application; Figure 2 is a perspective view of the double-sided laser welding device for the bimetallic band saw blade in an embodiment of the present application; Figure 3 is a perspective view of the double-sided laser welding device for the bimetallic band saw blade in an embodiment of the present application; Figure 4 is a perspective view of the double-sided laser welding device for the bimetallic band saw blade in an embodiment of the present application; Figure 5 is a sectional view of the double-sided laser welding device for the bimetallic band saw blade in an embodiment of the present application; Figure 6 is a sectional view of the double-sided laser welding device for the bimetallic band saw blade in an embodiment of the present application; Figure 7is 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; 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.

[0020] In all the drawings, the same reference signs refer to the same technical features, in particular: 1, conveying mechanism; 11, double compression roller; 12, guide roller; 13, guide compression rod; 14, support plate; 15, driving belt; 16, driven belt; 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, containing blind hole; 29, long screw rod; 210, limiting roller; 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; 4, laser head; 5, workbench surface; 6, welding platform; 7, bimetallic band saw blade; 71, first metal band; 72, second metal band. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer and more apparent, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not 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.

[0022] 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 devices or elements 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.

[0023] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" or "third" 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, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0024] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or 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.

[0025] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0026] Embodiment: 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 both sides of the bimetallic band saw blade 7, which not only significantly improves the penetration and strength of the welding, but also effectively reduces the residual stress in the weld, reduces the welding deformation, and further improves the quality and stability of the welding part of the bimetallic band saw blade 7.

[0027] 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 provided with a conveying mechanism 1 and at least two clamps 2 along the feeding path in sequence, 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.

[0028] The clamps 2 are arranged along the feeding direction and are used to limit the bimetallic band saw blade 7 on the feeding path in the horizontal and vertical directions, thereby limiting the first metal band 71 of the bimetallic band saw blade 7 on the top surface of the second metal band 72. Each clamp 2 comprises a horizontal limiting assembly and a vertical limiting assembly. The horizontal limiting assembly comprises horizontal limiting members arranged symmetrically 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 horizontal direction. The vertical limiting assembly comprises two vertical limiting members, which are used to abut the top end and the bottom end of the bimetallic band saw blade 7 on the feeding path, respectively, so as to press the first metal band 71 against the top surface of the second metal band 72. Two laser heads 4 are arranged on both sides of the feeding path, and each laser head 4 is arranged between two adjacent clamps, and is used to simultaneously weld the seams on both sides of the bimetallic band saw blade 7 on the feeding path.

[0029] It should be noted that, in the embodiment, the extension direction of the bimetallic band saw blade 7 is the longitudinal direction, the direction perpendicular to the longitudinal direction in the horizontal plane is the horizontal direction, and the direction perpendicular or vertical to the horizontal plane is the vertical direction. 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 the top end surface parallel to the horizontal plane. The two side surfaces of the bimetallic band saw blade 7 are the side wall surfaces perpendicular to the horizontal plane and extending in the longitudinal direction.

[0030] Further, in the embodiment, the double-pressing roller 11 comprises a pair of conveying rollers arranged on both sides of the feeding path, and the two conveying rollers are used to abut the two side surfaces of the bimetallic band saw blade 7 on the feeding path, respectively, and at least one of the conveying rollers is a driving roller, which is used to drive the bimetallic band saw blade 7 on the feeding path to move in the feeding direction. Preferably, both of the conveying rollers are driving rollers, and the rotation directions of the two conveying rollers are opposite, and the rotation directions of the two conveying rollers at the positions where the two conveying rollers contact the bimetallic band saw blade 7 are the same as the feeding direction. Further preferably, the rotation shafts of the conveying rollers are arranged on the workbench surface 5 in the vertical direction.

[0031] Further preferably, in the embodiment, the conveying mechanism 1 further comprises a plurality of guide rollers 12 arranged along the feeding path, which are used to vertically support the bimetallic band saw blade 7 on the feeding path, so as 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.

[0032] Specifically, at least one guide roller 12 is arranged on each side of the double-pressing roller 11 and each clamp 2 in the feeding direction.

[0033] Further, each of the guide rollers 12 is provided with a guide pressing rod 13 for vertically limiting the bimetallic band saw blade 7 on the guide roller 12, ensuring that the first metal band 71 can be always pressed on the top of the second metal band 72, so that the bimetallic band saw blade 7 can stably enter and exit the double pressing roller 11 and / or the clamp 2.

[0034] In actual use, the guide roller 12 can rotate around the shaft, and the multiple groups of guide pressing rods 13 and guide rollers 12 distributed on the feeding path can form stable vertical limiting of the first metal band 71 and the second metal band 72.

[0035] Further, the work platform is provided with support plates 14 on both sides along the feeding path, the two support plates 14 extend in the longitudinal direction, and the double pressing roller 11 and the clamp 2 are arranged between the two support plates 14, and the guide rollers 12 are arranged on the two support plates 14 in the longitudinal direction. Correspondingly, the conveying mechanism 1 further comprises a belt pulley arranged at the end of each guide roller 12 and a driven belt 16 connected with the belt pulleys, and at least one guide roller 12 is provided with a driving assembly, which 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 on the guide roller 12.

[0036] Specifically preferably, the two ends of the guide roller 12 provided with the driving assembly are provided with belt 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 belt pulley at one end of the guide roller with two belt pulleys through the driving belt 15, so as to drive the guide roller 12. Preferably, the driving belt 15 extends in the vertical direction.

[0037] More specifically, the guide pressing rod 13 is provided with a support rod at both ends, and 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.

[0038] Further preferably, in this embodiment, the transverse limiting assembly comprises limiting rollers 210 arranged on both sides of the feeding path in the transverse direction, and the two limiting rollers 210 can respectively abut against the transverse two side walls of the bimetallic band saw blade 7 on the feeding path, for limiting the bimetallic band saw blade 7 on the feeding path in the transverse direction.

[0039] 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 of the clamping surface, facilitating the two laser heads to simultaneously weld the bimetallic band saw blade on both sides.

[0040] Further, the two vertical limiting members are preferably two limiting rods 25 arranged vertically spaced apart, and each limiting rod 25 is provided with a rotating bearing 26 at the position for abutting the bimetallic band saw blade 7, so that when the limiting rod 25 limits the vertical direction of the bimetallic band saw blade 7, 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 friction that needs to be overcome when the bimetallic band saw blade 7 passes through the vertical limiting assembly, thereby reducing the resistance when feeding the bimetallic band saw blade 7, and enabling the bimetallic band saw blade 7 to be stably conveyed along the feeding path.

[0041] More specifically, in order to ensure that the vertical limiting assembly can adapt to bimetallic band saw blades 7 of different sizes, at least one spring 27 extending vertically 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 blade 7 of different sizes, the two pressing rods can always press on the vertical two end faces of the bimetallic band saw blade 7 through the action force of the spring 27. Preferably, each spring 27 is in an elongated state, so as to provide an action force for pressing the bimetallic band saw blade 7.

[0042] Further, in the embodiment, the clamp 2 includes two first side plates 21, two second side plates, a top plate and a bottom plate. The two first side plates 21 are arranged spaced apart in the transverse direction, and each first side plate 21 is parallel to the side face of the bimetallic band saw blade 7 on the feeding path, and the end portion of each limiting rod 25 is fixedly installed on the first side plate 21. The two second side plates are arranged spaced apart in the feeding direction, and the transverse two ends of each second side plate are installed on the first side plate 21, and each second side plate is provided with an opening for the bimetallic band saw blade 7 to pass through. The top plate and the bottom plate are respectively 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.

[0043] Further preferably, in the embodiment, a waist-shaped hole penetrating the plate body is formed at the position of each first side plate 21 corresponding to the limiting rod 25, and the waist-shaped hole extends in the vertical direction, and the two ends of the limiting rod 25 are embedded in or pass through the waist-shaped hole, so that the position of the limiting rod 25 in the vertical direction is adjustable.

[0044] 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 face of the waist-shaped hole, and the guiding assembly is preferably a guiding sliding block 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 where the limiting rod 25 protrudes out of the waist-shaped hole, so as to avoid the limiting rod 25 from sliding out of the waist-shaped hole.

[0045] More specifically, the accommodating blind hole 28 is vertically extended and communicates with the waist-shaped slot, and one end of the spring 27 is fixed to the bottom end surface of the accommodating blind hole 28, and the other end of the spring 27 extends vertically and protrudes out of the opening, and the protruding end of the spring 27 is fixedly connected with the limiting rod 25 located at the waist-shaped hole.

[0046] Further, in the embodiment, the second side plate includes two second sub-side plates 22 which are transversely spaced and fixed to the first side plate 21, thereby forming an opening between the two second sub-side plates 22 along the feeding direction. Preferably, the clamp 2 further includes a long screw rod 29, and correspondingly, transversely penetrating threaded holes are arranged on the second sub-side plates 22 and the first side plate 21. In actual use, the long screw rod 29 penetrates the threaded holes on the second sub-side plates 22 and the first side plate 21, thereby forming a fixed connection between the second sub-side plates 22 and the first side plate 21.

[0047] Further preferably, in the embodiment, the top plate includes two sub-top plates 23 which are transversely spaced, and correspondingly, the bottom plate includes two sub-bottom plates 24 which are transversely arranged, the two sub-top plates 23 are fixedly installed on the top of the first side plate 21 and the second side plate, and the two sub-bottom plates 24 are fixedly installed on the bottom of the first side plate 21 and the second side plate. At the same time, the limiting roller 210 is arranged between the sub-top plate 23 and the sub-bottom plate 24 located on the same side in the transverse direction, and preferably, the rotation shafts at the top and bottom of the limiting roller 210 are respectively rotated on the sub-top plate 23 and the sub-bottom plate 24.

[0048] More specifically, the first side plate 21, the second side plate, the bottom plate and the top plate are connected by bolted connection assemblies for detachable connection between the plates.

[0049] Further, in the embodiment, the double-sided laser welding device further includes 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 workbench 5, and each laser head 4 is correspondingly provided with a separate laser driving mechanism 3, and each laser driving mechanism 3 is arranged on the welding table 6, and the laser driving mechanism 3 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.

[0050] Further preferably, a plurality of lifting members are arranged between the welding table 6 and the workbench 5 for driving the workbench 5 to reciprocate in the vertical direction.

[0051] Further, in the embodiment, the laser driving mechanism 3 includes a moving driving assembly and a rotating driving assembly.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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 application relates to a workbench for a double-metal band saw blade, which comprises a workbench top, a feeding path for feeding the double-metal band saw blade formed on the workbench top, a feeding mechanism and at least two clamps arranged along the feeding path on the workbench top in sequence. The feeding mechanism comprises double-pressing rollers for driving the double-metal band saw blade on the feeding path to move in a feeding direction. Each of the clamps is arranged along the feeding path and comprises a transverse limiting assembly and a vertical limiting assembly. The transverse limiting assembly comprises transverse limiting members symmetrically arranged on both sides of the feeding path and used for limiting the movement of the double-metal band saw blade on the feeding path in a transverse direction. The vertical limiting assembly comprises two vertical limiting members used for abutting against the top end and the bottom end of the double-metal 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. Two laser heads are arranged on both sides of the feeding path and each of the laser heads is arranged between two adjacent clamps and used for simultaneously welding the seams on both sides of the double-metal band saw blade on the feeding path. The double-pressing rollers comprise a pair of feeding rollers arranged on both sides of the feeding path and used for abutting against the two side surfaces of the double-metal band saw blade on the feeding path respectively; and at least one of the feeding rollers is a driving roller used for driving the double-metal band saw blade on the feeding path to move in the feeding direction.

2. The double-sided laser welding device for a bimetallic band saw blade according to claim 1, characterized in that The feeding mechanism further comprises a plurality of guide rollers arranged along the feeding path and used for vertically supporting the double-metal band saw blade on the feeding path.

3. The apparatus for double-sided laser welding of bimetallic band saw blades according to claim 1, characterized in that A guide pressing rod is arranged corresponding to each of the guide rollers and used for vertically limiting the double-metal band saw blade on each of the guide rollers. The feeding mechanism further comprises pulleys arranged at the end portions of the guide rollers and a driven belt connecting the pulleys.

4. The double-sided laser welding device for a bimetallic band saw blade according to claim 3, characterized in that At least one of the guide rollers is provided with a driving assembly which can drive the guide roller to rotate and further drive the driven belt to rotate so as to drive other guide rollers to rotate and provide a longitudinal driving force for the bottom of the double-metal band saw blade on each of the guide rollers. The transverse limiting assembly comprises limiting rollers arranged along the feeding path in a transverse direction on both sides of the feeding path, and the two limiting rollers can abut against the transverse two side walls of the double-metal band saw blade on the feeding path respectively and are used for transversely limiting the double-metal band saw blade on the feeding path.

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 two vertical limiting members are two limiting rods arranged in a vertical direction, and each of the limiting rods is provided with a rotating bearing at the position for abutting against the double-metal band saw blade so as to reduce the friction force required when the double-metal band saw blade passes through the vertical limiting assembly.

6. The double-sided laser welding device for a bimetallic band saw blade according to claim 5, characterized in that At least one spring extending in a vertical direction is arranged between the two limiting rods, and the position of at least one of the limiting rods in the vertical direction is adjustable so as to limit the double-metal band saw blades with different vertical dimensions.

7. The double-sided laser welding device for a bimetallic band saw blade according to claim 6, characterized in that The clamps further comprise two first side plates, two second side plates, a top plate and a bottom plate.

8. The double-sided laser welding device for a bimetallic band saw blade according to claim 7, characterized in that The two first side plates are arranged in a transverse direction, and the end portions of the two limiting rods are fixedly installed on the two first side plates respectively. ​ Two second side plates are arranged at intervals along the feeding direction, and the transverse ends of each second side plate are mounted on the first side plate. Openings are arranged on the two second side plates for allowing the bimetallic band saw blade on the feeding path to pass through. The top plate and the bottom plate are arranged at 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 It also comprises a welding platform and a laser driving mechanism corresponding to the laser head; The welding platform is arranged at the bottom of the workbench, and each laser head is 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 can drive the laser head to move along the longitudinal direction, the transverse direction and the vertical direction respectively, and the rotating driving assembly can drive the laser head to rotate.

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 platform for driving the workbench to reciprocate along the vertical direction.

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