Round tube positioning device and round tube laser welding equipment

Abstract

The utility model discloses a round tube positioning device and round tube laser welding equipment, the round tube positioning device comprises a machine base, a clamping structure and a flattening structure, a welding station is formed on the machine base, the clamping structure comprises two clamping parts which are arranged in a spaced mode in the front-back direction, each clamping part is movably installed on the machine base in the front-back direction, and the flattening structure is arranged on the machine base. The clamping structure is used for clamping a to-be-welded circular pipe to the machine base, the flattening structure comprises two flattening parts which are arranged in a spaced mode in the front-back direction, the flattening parts are movably installed on the machine base in the up-down direction and used for flattening the two sides of a weld joint of the to-be-welded circular pipe, and the to-be-welded circular pipe is conveniently clamped in the front-back direction through movement of the two clamping parts; according to the technical scheme, the to-be-welded circular pipe is positioned at the welding station in the middle of the machine base, so that follow-up welding is facilitated, meanwhile, through movement of the two flattening parts, a welding seam is flattened in the vertical direction, the welding seam of the to-be-welded circular pipe is kept flush, dislocation of the welding seam of the to-be-welded circular pipe is avoided, and therefore the welding quality can be improved easily.

Description

Technical Field

[0001] The utility model relates to the technical field of round tube welding, in particular to a round tube positioning device and round tube laser welding equipment. Background Art

[0002] At present, laser welding is one of the important aspects of the application of laser processing material processing technology. Due to its advantages such as narrow weld, deep penetration, parallel weld sides, small heat-affected zone, and small welding deformation, it is widely used in machinery manufacturing, aerospace, automobile industry, powder metallurgy, biomedical microelectronics industry and other fields. The principle of laser welding is to radiate a high-intensity laser beam to the metal surface. Through the interaction between the laser and the metal, the metal absorbs the laser and converts it into heat energy, which melts the metal and then cools and crystallizes to form a weld. However, the positioning device of the existing round tube laser welding device can usually only position round tubes of the same specifications, and is not suitable for positioning round tubes of different specifications, and has poor versatility. Utility Model Content

[0003] The main purpose of the utility model is to provide a round tube positioning device and round tube laser welding equipment, aiming to solve the problem of poor versatility of the existing round tube positioning device.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a round tube positioning device for round tube laser welding equipment, the round tube positioning device comprising:

[0005] The machine base is formed with welding stations;

[0006] A clamping structure, comprising two clamping parts spaced apart in the front-rear direction, each of the clamping parts being movably mounted on the machine base in the front-rear direction, for clamping the round pipe to be welded on the machine base; and,

[0007] The flattening structure comprises two flattening parts which are arranged at intervals in the front-rear direction, and each of the flattening parts is movably installed on the machine base in the up-down direction to flatten the two sides of the weld of the round pipe to be welded.

[0008] Optionally, a positioning drive structure is provided between each of the clamping parts and each of the flattening parts and the base, and the positioning drive structure includes:

[0009] A positioning drive motor is arranged on the machine base;

[0010] The positioning transmission structure is arranged between the machine base and the positioning drive motor, and is used for converting the rotation of the positioning drive motor into linear motion.

[0011] Optionally, the positioning transmission structure includes a second ball screw structure, the second ball screw structure includes a second screw and a second ball that cooperate with each other for transmission, the second screw drive is connected to the positioning drive motor, and the second ball is arranged on the clamping part or the flattening part.

[0012] Optionally, the positioning transmission structure also includes a second belt transmission structure, which includes a second driving wheel, a second driven wheel and a second synchronous belt, the second driving wheel is arranged on the positioning drive motor, the second driven wheel is arranged on the second screw, and the second synchronous belt is arranged between the driving wheel and the driven wheel.

[0013] Optionally, the clamping structure further comprises a bottom plate detachably mounted on the base, and the clamping portion and the positioning drive structure are both arranged on the bottom plate.

[0014] Optionally, the clamping structure further comprises a protective cover detachably mounted on the base, and the clamping portion and the positioning drive structure are both arranged in the protective cover.

[0015] Optionally, the flattening portion comprises:

[0016] A flattening seat is movably mounted on the machine base in an up-and-down direction; and

[0017] A plurality of flattening blocks are detachably mounted on the flattening seat, and the plurality of flattening blocks are arranged along the left and right directions.

[0018] Optionally, the flattening parts and the flattening driving structures are arranged in a one-to-one correspondence as a flattening group, and a plurality of the flattening groups are arranged along the left and right directions.

[0019] Optionally, the round tube positioning device further comprises a mounting rod arranged on the machine base for the round tube to be welded to pass through.

[0020] In addition, the utility model also provides a round tube laser welding device, including the round tube positioning device mentioned above.

[0021] In the technical solution of the utility model, the two clamping parts are moved so as to clamp the circular tube to be welded in the front-to-back direction, so as to position the circular tube to be welded at the welding station in the middle of the machine base, thereby facilitating subsequent welding. At the same time, the two flattening parts are moved so as to flatten the weld in the up-down direction, so that the weld of the circular tube to be welded remains flush, so as to avoid dislocation of the weld of the circular tube to be welded, thereby helping to improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the round tube laser welding equipment provided by the utility model;

[0024] Figure 2 for Figure 1 The main structural diagram of the round tube laser welding equipment in FIG.

[0025] Figure 3 for Figure 2 A local enlarged structural diagram at A in FIG.

[0026] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the round tube feeding device;

[0027] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B in FIG.

[0028] Figure 6 for Figure 1 A schematic diagram of the three-dimensional structure of the clamping structure;

[0029] Figure 7 for Figure 1 A schematic diagram of a top view of the clamping structure;

[0030] Figure 8 for Figure 1 A schematic diagram of the three-dimensional structure of the laser welding device;

[0031] Fig. 9 for Figure 8 A schematic diagram of the local enlarged structure at C in FIG.

[0032] Fig.10 The utility model is a schematic diagram of the three-dimensional structure of the round pipe to be welded.

[0033] Description of Figure Numbers:

[0034]

[0035]

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] At present, laser welding is one of the important aspects of the application of laser processing material processing technology. Due to its advantages such as narrow weld, deep penetration, parallel weld sides, small heat-affected zone, and small welding deformation, it is widely used in machinery manufacturing, aerospace, automobile industry, powder metallurgy, biomedical microelectronics industry and other fields. The principle of laser welding is to radiate a high-intensity laser beam to the metal surface. Through the interaction between the laser and the metal, the metal absorbs the laser and converts it into heat energy, which melts the metal and then cools and crystallizes to form a weld. However, the positioning device of the existing round tube laser welding device can usually only position round tubes of the same specifications, and is not suitable for positioning round tubes of different specifications, and has poor versatility.

[0041] Based on this, the utility model provides a round tube positioning device for round tube laser welding equipment, aiming to solve the problem of poor versatility of existing round tube positioning devices. Figures 1 to 9 This is a schematic diagram of the structure of the round tube laser welding equipment provided by the utility model; Fig.10 This is a schematic structural diagram of a round pipe to be welded provided by the utility model.

[0042] See also Figures 1 to 3The round tube positioning device 300 includes a machine base 100, a clamping structure 310 and a flattening structure 320. The machine base 100 is formed with a welding station. The clamping structure 310 includes two clamping parts 311 spaced apart along the front-to-back direction. Each of the clamping parts 311 is movably installed on the machine base 100 along the front-to-back direction to clamp the round tube 500 to be welded on the machine base 100. The flattening structure 320 includes two flattening parts 321 spaced apart along the front-to-back direction. Each of the flattening parts 321 is movably installed on the machine base 100 along the up-down direction to flatten both sides of the weld of the round tube 500 to be welded.

[0043] In the technical solution of the utility model, the two clamping parts 311 are moved so as to clamp the circular tube 500 to be welded in the front-to-back direction, so as to position the circular tube 500 to be welded at the welding station in the middle of the machine base 100, so as to facilitate subsequent welding. At the same time, the two flattening parts 321 are moved so as to flatten the weld in the up-down direction, so that the weld of the circular tube 500 to be welded remains flush, so as to avoid the weld of the circular tube 500 to be welded from being misaligned, thereby helping to improve the welding quality.

[0044] It can be understood that, in theory, as long as one of the clamping parts 311 is movable, the welding clamp can be clamped on the machine base 100. However, since the circular tube 500 to be welded needs to be set in the middle of the machine base 100, the position of the welding station is fixed. When the specification of the circular tube 500 to be welded changes, at this time, if only one of the clamping parts 311 is movable, the axis of the circular tube 500 to be welded will offset from the welding station. Therefore, both of the clamping parts 311 need to be movable to clamp the circular tubes 500 to be welded of different specifications in the middle of the machine base 100, thereby helping to improve the versatility of the circular tube positioning device 300.

[0045] For further information, see Figures 1 to 3A positioning drive structure 330 is provided between each of the clamping parts 311 and each of the flattening parts 321 and the machine base 100, and the positioning drive structure 330 includes a positioning drive motor 331 and a positioning transmission structure 332. The positioning drive motor 331 is provided on the machine base 100, and the positioning transmission structure 332 is provided between the machine base 100 and the positioning drive motor 331, so as to convert the rotation of the positioning drive motor 331 into a linear motion. In this way, the positioning drive motor 331 is provided to drive the clamping part 311 or the flattening part 321 to move, and the positioning transmission structure 332 is provided to convert the rotation of the positioning drive motor 331 into a linear motion, so that the positioning drive motor 331 can drive the clamping part 311 or the flattening part 321 to move. Of course, in other embodiments, the positioning drive structure 330 may also be a pneumatic cylinder or an oil cylinder, etc., as long as it can drive the clamping portion 311 or the flattening portion 321 to move in a straight line, and the present invention does not limit this.

[0046] For further information, see Figure 6 and Figure 7 The positioning transmission structure 332 includes a second ball screw structure 332a, and the second ball screw structure 332a includes a second screw and a second ball that cooperate with each other for transmission. The second screw drives the positioning drive motor 331, and the second ball is arranged on the clamping part 311 or the flattening part 321. In this way, by arranging the second screw and the second ball, the rotation of the positioning drive motor 331 is converted into linear movement, so that the positioning drive motor 331 can drive the clamping part 311 or the flattening part 321 to move.

[0047] The second lead screw may be directly connected to the positioning drive motor 331, or may be indirectly connected to the positioning drive motor 331 through a transmission structure. The utility model does not limit this. Specifically, in the present embodiment, the positioning drive structure 332 also includes a second belt drive structure 332b, and the second belt drive structure 332b includes a second driving wheel, a second driven wheel and a second synchronous belt. The second driving wheel is arranged on the positioning drive motor 331, and the second driven wheel is arranged on the second lead screw. The second synchronous belt is arranged between the driving wheel and the driven wheel. In this way, by setting the second belt drive structure 332b to change the layout direction of the positioning drive motor 331, the positioning drive motor 331 can be arranged in parallel with the second lead screw, thereby helping to improve the space utilization of the positioning drive structure 330.

[0048] In some embodiments of the present invention, please refer to Figure 6 and Figure 7The clamping structure 310 also includes a bottom plate 312 that can be detachably mounted on the base 100. The clamping portion 311 and the positioning drive structure 330 are both arranged on the bottom plate 312. Thus, by setting the bottom plate 312, the clamping structure 310 can be detachably mounted on the base 100, so that the clamping portion 311 and the positioning drive structure 330 can be separated from the base 100 as a whole, thereby facilitating subsequent maintenance or replacement. Further, the bottom plate 312 is provided with a plurality of pick-and-place portions, and the plurality of pick-and-place portions are arranged at intervals along the axial direction of the bottom plate 312. Thus, by setting a plurality of pick-and-place portions, the staff can pick and place the bottom plate 312 to remove the clamping portion 311 and the positioning drive structure 330 as a whole from the base 100. Specifically, there are multiple pick-and-place portions. For example, the pick-and-place portion can be a pick-and-place handle, or a pick-and-place bracelet, etc., which is not limited in the present invention.

[0049] In some embodiments of the present invention, please refer to Figure 1 The clamping structure 310 also includes a protective cover 313 detachably mounted on the base 100, and the clamping portion 311 and the positioning drive structure 330 are both arranged in the protective cover 313. In this way, by setting the protective cover 313 to isolate the clamping portion 311 from the positioning drive structure 330, it can prevent the positioning drive structure 330 from being damaged and prevent people from being injured by the positioning drive structure 330, thereby helping to improve the safety of the clamping structure 310.

[0050] In some embodiments of the present invention, the clamping structure 310 also includes a pressure sensor 314 provided on the clamping portion 311 for detecting the pressure of the clamping portion 311. Thus, by providing the pressure sensor 314, the clamping force of the clamping portion 311 can be detected to prevent the circular tube 500 to be welded from being damaged due to excessive clamping force of the clamping portion 311.

[0051] Since the weld seam of the circular tube 500 to be welded is set with a gap before welding, and can only be butted together under the clamping of the clamping structure 310, the weld seam may be partially uneven during butt-joining. At this time, if the flattening portion 321 is an integral flattening plate, the remaining flush area may be deformed due to the deformation of the flattening plate, resulting in an uneven flush weld seam. For this reason, please refer to Figure 1The flattening portion 321 includes a flattening seat 321a and a plurality of flattening blocks 321b. The flattening seat 321a is movably installed on the machine base 100 along the up and down direction. The plurality of flattening blocks 321b are detachably installed on the flattening seat 321a. The plurality of flattening blocks 321b are arranged along the left and right direction. In this way, by setting up the plurality of flattening blocks 321b, on the one hand, when flattening the local unevenness of the weld, the plurality of flattening blocks 321b can be isolated from each other to prevent the remaining flush areas from being excessively squeezed and uneven. On the other hand, the flattening blocks 321b can be adjusted as needed to improve the flattening efficiency of the flattening portion 321.

[0052] It can be understood that when the weld of the circular tube 500 to be welded becomes uneven locally, the flattening block 321b in the uneven area can be replaced with a material with higher strength, while the remaining flush areas can be replaced with elastic materials. In this way, the flattening portion 321 only flattens the local area to prevent the remaining flush areas from being affected.

[0053] Furthermore, the flattening portion 321 and the flattening drive structure are arranged in a one-to-one correspondence as a flattening group, and multiple flattening groups are arranged in the left and right directions. In this way, by setting up multiple flattening groups, each flattening drive structure can drive a flattening portion 321 individually, so as to not only flatten the weld of the circular tube 500 to be welded as a whole, but also flatten it locally, thereby helping to improve the flattening efficiency of the flattening structure 320.

[0054] In some embodiments of the utility model, the round tube positioning device 300 also includes a mounting rod 340 arranged on the machine base 100 for the round tube 500 to be welded to pass through. In this way, by setting the mounting rod 340, the round tube 500 to be welded can be pre-positioned to facilitate subsequent positioning and welding, and the laser 410 can be prevented from burning through the round tube 500 to be welded, thereby preventing the inner wall surface of the round tube 500 to be welded from being damaged.

[0055] To achieve the above purpose, the present invention also provides a round tube laser welding device 100, see Figures 1 to 3 The round tube laser welding equipment 1000 includes a round tube feeding device 200, a round tube positioning device 300 and a laser welding device 400. The round tube feeding device 200 includes a clamping structure 310 and a flattening structure 320 arranged on the machine base 100. The clamping structure 310 is used to clamp and position the round tube 500 to be welded at the welding station. The flattening structure 320 is used to flatten the weld seam of the round tube 500 to be welded. The laser welding device 400 is arranged on the machine base 100, and is used to weld the round tube 500 to be welded at the welding station.

[0056] In the technical solution of the utility model, the round tube feeding device 200 is provided so as to transfer the round tube 500 to be welded to the welding station, the clamping structure 310 is provided so as to clamp and position the round tube 500 to be welded at the welding station, and the flattening structure 320 is provided so as to flatten the weld seam of the round tube 500 to be welded, and at the same time, the longitudinal seam of the round tube 500 to be welded is welded by the activity of the laser 410. In this way, the round tube feeding device 200 is provided so as to enable the round tube laser welding device The equipment 1000 can automatically load materials, and by setting the round tube positioning device 300, the round tube 500 to be welded can be clamped and positioned at the welding station to prevent the round tube 500 to be welded from moving during welding, and the weld of the round tube 500 to be welded can be flattened to prevent defects such as weld dislocation during welding of the round tube 500 to be welded. At the same time, by setting the laser welding device 400, the longitudinal seam of the welded round tube can be welded, and the welding quality is good and the welding efficiency is high, thereby solving the problem of low positioning accuracy of the existing metal round tube welding device.

[0057] It should be noted that the structure of the round tube positioning device 300 in the round tube laser welding equipment 100 can refer to the embodiment of the round tube positioning device 300 mentioned above, which will not be repeated here; since the above-mentioned round tube positioning device 300 is used in the round tube laser welding equipment 100 provided by the utility model, the embodiment of the round tube laser welding equipment 100 provided by the utility model includes all technical solutions of all embodiments of the above-mentioned round tube positioning device 300, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0058] For further information, see Figures 3 to 5The round tube feeding device 200 includes a feeding seat 210, a feeding rack 220 and a feeding drive assembly. The feeding seat 210 is movably installed on the machine base 100 in the left-right direction, and the feeding rack 220 is movably installed on the feeding seat 210 in the up-down direction. The feeding drive assembly includes a first feeding drive structure 230 and a second feeding drive structure 240. The first feeding drive structure 230 is drivingly connected to the feeding seat 210 to drive the feeding seat 210 to move in the left-right direction. The second feeding drive structure 240 is drivingly connected to the feeding rack 220 to drive the feeding rack 220 to move in the up-down direction. When feeding is required, the first feeding drive structure 230 drives the feeding seat 210 to move rightward to transfer the round tube 500 to be welded to the machine base. 100, and then the second loading drive structure 240 drives the loading rack 220 to move upward to transfer the circular tube 500 to be welded to the welding station. After the circular tube positioning device 300 positions the circular tube 500 to be welded, the second loading drive structure 240 drives the loading rack 220 to move downward. Finally, the first loading drive structure 230 drives the loading seat 210 to move to the left for subsequent loading. In this way, the loading seat 210 and the loading rack 220 are set to transfer the circular tube 500 to be welded outside the machine base 100 to the welding station. At the same time, the loading drive assembly is set to drive the loading rack 220 and the loading seat 210 to move, so that the circular tube loading device 200 can complete automatic loading.

[0059] It should be noted that, in theory, the loading base 210 can move left and right to transfer the circular tube 500 to be welded outside the machine base 100 to the welding station, but this is only applicable to welding circular tubes of the same specification. If the specification of the circular tube 500 to be welded changes, the position of its axis will also change. For this reason, the loading rack 220 is movably arranged in the up and down direction so that the position of the loading rack 220 can be adjusted in the up and down direction so as to adjust the axis position of the circular tube 500 to be welded, so that the loading structure can transfer the circular tubes 500 to be welded of different specifications to the welding station, thereby helping to improve the versatility of the circular tube loading device 200.

[0060] In some embodiments of the present invention, the first feeding drive structure 230 includes a first feeding drive motor 231 and a first feeding transmission structure 232, wherein the first feeding drive motor 231 is disposed on the feeding seat 210, and the first feeding transmission structure 232 is disposed between the feeding seat 210 and the machine base 100, and is used to convert the rotation of the first feeding drive motor 231 into left-right movement, so that the first feeding drive motor 231 is provided to drive the feeding seat 210 to move, and the first feeding transmission structure 232 is provided to convert the rotation of the first feeding drive motor 231 into linear movement, so that the first feeding drive motor 231 can drive the feeding seat 210 to move in the left-right direction. Of course, in other embodiments, the first feeding drive structure 230 can also be a cylinder or oil, etc., as long as it can drive the feeding seat 210 to move in the left-right direction, and the present invention does not limit this.

[0061] Furthermore, the first feeding transmission structure 232 includes a gear and a rack that mesh with each other, and the gear and the rack are respectively arranged on the first feeding drive motor 231 and the machine base 100. In this way, by setting the gear and the rack, the rotation of the first feeding drive motor 231 is converted into linear movement, so that the first feeding drive motor 231 can drive the feeding base 210 to move.

[0062] In some embodiments of the utility model, the first feeding drive structure 230 also includes a first feeding guide structure 233, the first feeding guide structure 233 includes a first feeding guide rail and a first feeding chute that cooperate with each other, the first feeding guide rail is arranged on the machine base 100 and extends in the left and right directions, and the first feeding chute is arranged on the feeding seat 210. In this way, by setting the first feeding guide structure 233, the feeding seat 210 can move along a preset path, reducing the probability of the feeding seat 210 shaking, thereby helping to improve the stability of the activity of the feeding seat 210.

[0063] In some embodiments of the present invention, the second feeding drive structure 240 includes a second feeding drive motor 241 and a second feeding transmission structure 242, wherein the second feeding drive motor 241 is disposed on the feeding seat 210, and the second feeding transmission structure 242 is disposed between the feeding frame 220 and the feeding seat 210, and is used to convert the rotation of the second feeding drive motor 241 into an up-and-down movement, so that the second feeding drive motor 241 is provided to drive the feeding frame 220 to move, and the second feeding transmission structure 242 is provided to convert the rotation of the second feeding drive motor 241 into a linear movement, so that the second feeding drive motor 241 can drive the feeding frame 220 to move up-and-down. Of course, in other embodiments, the second feeding drive structure 240 can also be a cylinder or an oil cylinder, etc., as long as it can drive the feeding frame 220 to move up-and-down, and the present invention does not limit this.

[0064] Furthermore, the second feeding transmission structure 242 includes a first ball screw structure 242a, and the first ball screw structure 242a includes a first screw and a first ball that cooperate with each other for transmission, and the first screw drives the second feeding drive motor 241, and the first ball is arranged on the feeding rack 220. In this way, by arranging the first screw and the first ball, the rotation of the second feeding drive motor 241 is converted into linear movement, so that the second feeding drive motor 241 can drive the feeding rack 220 to move.

[0065] The first screw can be directly connected to the second feeding drive motor 241, or it can be indirectly connected to the second feeding drive motor 241 through a transmission structure. The utility model does not limit this. Specifically, in this embodiment, the second feeding transmission structure 242 also includes a first belt transmission structure 242b, and the first belt transmission structure 242b includes a first driving wheel, a first driven wheel and a first synchronous belt. The first driving wheel is arranged on the second feeding drive motor 241, and the first driven wheel is arranged on the first screw. The first synchronous belt is arranged between the driving wheel and the driven wheel. In this way, by setting the first belt transmission structure 242b to change the layout direction of the second feeding drive motor 241, the second feeding drive motor 241 can be arranged in parallel with the first screw, thereby helping to improve the space utilization of the feeding seat 210.

[0066] In some embodiments of the utility model, the second feeding drive structure 240 also includes a second feeding guide structure 243, the second feeding guide structure 243 includes a second feeding guide rail and a second feeding chute that cooperate with each other, the second feeding guide rail is arranged on the machine base 100, and extends in the up and down directions, and the second feeding chute is arranged on the feeding seat 210. In this way, by setting the second feeding guide structure 243, the feeding rack 220 can move along a preset path, reducing the probability of the feeding rack 220 shaking, thereby helping to improve the stability of the activity of the feeding seat 210.

[0067] Furthermore, the second feeding guide structure 243 is provided in plurality, and the plurality of second feeding guide structures 243 are arranged at intervals in the left-right direction and the front-back direction. Thus, by providing a plurality of second feeding guide structures 243, on the one hand, the weight of the feeding rack 220 can be evenly distributed on the feeding seat 210, which is beneficial to improving the stability of the activity of the feeding rack 220; on the other hand, the weight of the feeding rack 220 can be shared, reducing the load of a single second feeding guide structure 243, which helps to improve the service life of the second feeding guide structure 243.

[0068] In some embodiments of the present invention, please refer to Figure 5 The round tube feeding device 200 also includes a feeding sensor sheet 250, which is disposed on the machine base 100 to sense the position of the feeding seat 210. Thus, by setting the feeding sensor sheet 250 to detect the moving position of the feeding seat 210, the round tube feeding device 200 can accurately position the feeding seat 210 at a preset position.

[0069] In some embodiments of the present invention, please refer to Figure 5 The round tube feeding device 200 also includes a feeding sensor sheet 250, and the feeding sensor sheet 250 is arranged on the feeding rack 220 to detect the position of the feeding rack 220. In this way, by setting the feeding sensor sheet 250 to detect the moving position of the feeding rack 220, the round tube feeding device 200 can accurately position the feeding rack 220 at the welding station.

[0070] It should be noted that the above two related technical features: "the loading sensor plate 250 is arranged on the machine base 100" and "the loading sensor plate 250 is arranged on the loading rack 220" can be set either one or at the same time. Obviously, setting them at the same time will have a better effect.

[0071] In some embodiments of the present invention, please refer to Figure 1 , Figure 8 and Fig. 9The laser welding device 400 also includes a laser sliding seat 420, a laser mounting seat 430, a rangefinder 450 and a laser welding driving assembly. The laser sliding seat 420 is movably mounted on the machine base 100 along the left-right direction, and the laser mounting seat 430 is movably mounted on the laser sliding seat 420 along the up-down direction. The rangefinder 450 is arranged on the laser mounting seat 430. The laser welding driving assembly includes a first laser welding driving structure 441 and a second laser welding driving structure 442. The first laser welding driving structure 441 is driven and connected to the laser sliding seat 420 to drive the laser sliding seat 420 to move along the left-right direction. The second laser welding driving structure 442 is driven and connected to the laser mounting seat 430 to drive the laser mounting seat 430 to move along the up-down direction. The laser 410 is arranged on the laser mounting seat 430. In this way, the laser is driven by the movement of the laser sliding seat 420. 410 moves in the left-right direction to weld the longitudinal seam of the circular tube 500 to be welded. The movement of the laser mounting seat 430 drives the laser 410 to move in the up-down direction to adjust the focal length of the laser 410. The distance meter 450 is set to measure the heights on both sides of the weld to determine whether the weld of the circular tube 500 to be welded is flush. At the same time, the first laser welding driving structure 441 is set to drive the laser 410 and the distance meter 450 to move in the left-right direction, so that the longitudinal seam of the circular tube 500 to be welded can be welded and its horizontality can be measured to determine whether the two ends of the circular tube 500 to be welded are flush. The second laser welding driving structure 442 is set to drive the laser 410 to move in the up-down direction to adjust the focal length of the laser 410, so that the laser welding device 400 can adapt to the circular tubes 500 to be welded of different specifications.

[0072] Since the distance measurement is used for the weld butt joint before welding, it is not necessary to measure the distance during the welding process. However, the spatter generated during welding can easily damage the distance meter 450. Therefore, in this embodiment, refer to Figure 8 and Fig. 9The laser welding device 400 also includes a shielding portion 451 movably mounted on the laser mounting seat 430. Within its movable stroke, the shielding portion 451 has a shielding position for shielding the rangefinder 450, and an exposed position outside the shielding position. Before welding, the shielding portion 451 first moves to the exposed position so that the shielding portion 451 can measure the weld of the circular tube 500 to be welded. During welding, the shielding portion 451 moves to the shielding position to hide the rangefinder 450 to prevent welding spatter from damaging the rangefinder 450. In this way, the movement of the shielding portion 451 does not affect the measurement of the rangefinder 450, and can prevent welding spatter from damaging the rangefinder 450.

[0073] Further, the shielding part 451 has multiple moving modes, for example, the shielding part 451 can be linearly movable or rotationally movable, which is not limited in the present invention. Specifically, in the present embodiment, the shielding part 451 is rotatably mounted on the laser mounting seat 430 along an axis extending in the vertical direction, and the laser welding device 400 further includes a shielding driving structure 452 drivingly connected to the shielding part 451 to drive the shielding part 451 to rotate. In this way, by setting the shielding driving structure 452 to drive the shielding part 451 to rotate, the shielding part 451 can be switched between the shielding position and the revealing position, so that the shielding part 451 can both shield the rangefinder 450 and reveal the rangefinder 450. Further, there are multiple shielding driving structures 452, for example, the shielding driving structure 452 can be a motor, or a rotary cylinder, etc., which is not limited in the present invention. Specifically, in this embodiment, the shielding driving structure 452 includes a shielding driving motor arranged on the laser mounting seat 430, and the shielding driving motor is driven to connect the shielding part 451. In this way, the shielding part 451 is directly driven by the shielding driving motor, which has a simple structure and is easy to rotate.

[0074] In some embodiments of the utility model, the first laser welding drive structure 441 includes a first laser drive motor and a third belt transmission structure, the first laser drive motor is installed to the machine base 100, the third belt transmission structure includes a third driving wheel, a third driven wheel and a third synchronous belt, the third driving wheel is arranged on the first laser drive motor, the third driven wheel is arranged on the third screw, and the third synchronous belt is arranged between the driving wheel and the driven wheel. In this way, the first laser drive motor is arranged to drive the third driving wheel to rotate, and the third belt transmission structure is arranged to convert the rotation of the first laser drive motor into linear movement, so that the first laser drive motor can drive the laser sliding seat 420 to move in the left and right directions.

[0075] In some embodiments of the utility model, the second laser welding drive structure 442 includes a second laser drive motor and a third ball screw structure. The second laser drive motor is installed to the laser sliding seat 420. The third ball screw structure includes a third screw and a third ball sleeved on the third screw structure. The third screw drive is connected to the second laser drive motor. The third ball is arranged on the laser mounting seat 430. In this way, the second laser drive motor is arranged to drive the third screw to rotate. At the same time, the third ball screw structure is arranged to convert the rotation of the second laser drive motor into linear movement, so that the second laser drive motor can drive the laser mounting seat 430 to move up and down.

[0076] Since both sides of the weld of the circular tube 500 to be welded may be uneven, please refer to Figure 8 In this embodiment, the laser welding device 400 also includes a laser movable seat 460 and a third laser welding driving structure 470. The laser movable seat 460 is movably installed on the machine base 100 in the front-to-back direction. The third laser welding driving structure 470 is installed on the machine base 100 and is driven to be connected to the laser movable seat 460 to drive the laser movable seat 460 to move in the front-to-back direction. The laser sliding seat 420 is installed on the laser movable seat 460. In this way, by setting the laser movable seat 460, the laser 410 can be driven to move in the front-to-back direction to cooperate with the laser sliding seat 420 to measure the height of both sides of the weld of the circular tube 500 to be welded, so as to flatten the weld later, thereby helping to improve the welding quality of the laser welding device 400.

[0077] Furthermore, the third laser welding drive structure 470 includes a third laser drive motor and a fourth ball screw structure. The third laser drive motor is installed to the machine base 100. The fourth ball screw structure includes a fourth screw and a fourth ball that cooperate with each other for transmission. The fourth screw drive is connected to the third laser drive motor. The fourth ball is arranged on the laser sliding seat 420. In this way, the third laser drive motor is arranged to drive the fourth screw to rotate. At the same time, the fourth ball screw structure is arranged to convert the rotation of the second laser drive motor into linear movement, so that the third laser drive motor can drive the laser sliding seat 420 to move forward and backward.

[0078] In some embodiments of the utility model, the laser welding device 400 also includes two welding guide structures 480 respectively arranged corresponding to the laser sliding seat 420 and the laser mounting seat 430, each of the welding guide structures 480 includes a first welding guide rail and a first welding slide groove that cooperate with each other, and one of the first welding slide groove and the first welding guide rail is arranged on the machine base 100 or the laser sliding seat 420, and the other is arranged on the laser sliding seat 420 or the laser mounting seat 430. In this way, by setting the welding guide structure 480, the laser sliding seat 420 or the laser mounting seat 430 can move along a preset path, reducing the probability of the laser sliding seat 420 or the laser mounting seat 430 shaking, thereby helping to improve the stability of the movement of the laser sliding seat 420 or the laser mounting seat 430.

[0079] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made under the concept of the present invention using the contents of the specification and drawings of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A round tube positioning device for round tube laser welding equipment, characterized in that: The round tube positioning device comprises: The machine base is formed with welding stations; A clamping structure, comprising two clamping parts spaced apart in the front-rear direction, each of the clamping parts being movably mounted on the machine base in the front-rear direction, for clamping the round pipe to be welded on the machine base; and, The flattening structure comprises two flattening parts which are arranged at intervals in the front-rear direction, and each of the flattening parts is movably installed on the machine base in the up-down direction to flatten the two sides of the weld of the round pipe to be welded.

2. The round tube positioning device according to claim 1, characterized in that: A positioning drive structure is provided between each of the clamping parts and each of the flattening parts and the base, and the positioning drive structure comprises: A positioning drive motor is arranged on the machine base; The positioning transmission structure is arranged between the machine base and the positioning drive motor, and is used for converting the rotation of the positioning drive motor into linear motion.

3. The round tube positioning device according to claim 2, characterized in that: The positioning transmission structure includes a second ball screw structure, which includes a second screw and a second ball that cooperate with each other for transmission. The second screw drive is connected to the positioning drive motor, and the second ball is arranged on the clamping part or the flattening part.

4. The round tube positioning device according to claim 3, characterized in that: The positioning transmission structure also includes a second belt transmission structure, which includes a second driving wheel, a second driven wheel and a second synchronous belt. The second driving wheel is arranged on the positioning drive motor, the second driven wheel is arranged on the second screw, and the second synchronous belt is arranged between the driving wheel and the driven wheel.

5. The round tube positioning device according to claim 2, characterized in that: The clamping structure also includes a bottom plate detachably mounted on the base, and the clamping portion and the positioning drive structure are both arranged on the bottom plate.

6. The round tube positioning device according to claim 2, characterized in that: The clamping structure further comprises a protective cover detachably mounted on the base, and the clamping portion and the positioning drive structure are both arranged in the protective cover.

7. The round tube positioning device according to claim 1, characterized in that: The flattening portion comprises: A flattening seat is movably mounted on the machine base in an up-and-down direction; and A plurality of flattening blocks are detachably mounted on the flattening seat, and the plurality of flattening blocks are arranged along the left and right directions.

8. The round tube positioning device according to claim 7, characterized in that: The flattening structure further comprises a flattening driving structure that drives and connects the flattening portion; The flattening parts and the flattening driving structures are arranged in a one-to-one correspondence as a flattening group, and a plurality of the flattening groups are arranged along the left and right directions.

9. The round tube positioning device according to claim 1, characterized in that: The round tube positioning device also includes a mounting rod arranged on the machine base for the round tube to be welded to pass through.

10. A round tube laser welding device, characterized in that: It comprises a round tube positioning device as described in any one of claims 1 to 9.

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