Laser welding tubular workpiece positioning device

Abstract

The utility model relates to the field of laser welding equipment, and discloses a laser welding tubular workpiece positioning device which comprises a bottom plate, a positioning mechanism is arranged at the top of the bottom plate, an adjusting mechanism is arranged in the bottom plate, and the adjusting mechanism is used for adjusting the positioning mechanism. The positioning mechanism comprises a driving assembly and a supporting assembly, the supporting assembly is used for supporting a workpiece, the driving assembly can drive the supporting assembly to operate, the supporting assembly comprises two mounting frames, the two mounting frames are both arranged at the top of the bottom plate, and two supporting plates are fixedly connected into the mounting frames. According to the tubular workpiece welding device, the positioning mechanism is arranged at the top of the bottom plate so that the tubular workpiece can be positioned, and therefore the tubular workpiece can be kept stable in the welding process, and the adjusting mechanism can adjust the distance between the two mounting frames so that the tubular workpiece welding device can be used for positioning the tubular workpieces with different lengths.

Description

Technical Field

[0001] The utility model relates to the field of laser welding equipment, in particular to a laser welding tubular workpiece positioning device. Background Art

[0002] Laser welding is a welding method that uses a high-energy-density laser beam as a heat source to locally heat the material to a molten state, and then cools and solidifies to achieve connection. During the laser welding process, the laser beam is focused on the surface of the workpiece, causing the material in the irradiated area to quickly heat up to above the melting point, forming a molten pool. As the laser beam moves, the liquid metal in the molten pool flows and solidifies under the action of surface tension and gravity, thereby connecting the two workpieces together;

[0003] Tubular workpieces need to be kept in a precise position during welding to ensure the quality and accuracy of the weld. The positioning device can firmly fix the tubular workpiece to prevent it from moving or shaking during welding. During the welding relief process, although the welding heat source has been removed, the workpiece will still be affected by residual stress and thermal deformation. The positioning device can resist the effects of these forces and keep the position of the workpiece unchanged, thereby ensuring that the size and shape of the weld meet the design requirements;

[0004] In industrial production, the sizes and shapes of tubular workpieces are often varied. Some existing positioning devices are designed only for workpieces within a specific size range, and lack the ability to adapt to tubular workpieces of different diameters, resulting in a small scope of application of the positioning device. Therefore, a laser welding tubular workpiece positioning device is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a laser welding tubular workpiece positioning device, aiming to improve the problem that the positioning device in the prior art has a small application range.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A laser welding tubular workpiece positioning device comprises a bottom plate, a positioning mechanism is arranged on the top of the bottom plate, an adjusting mechanism is arranged inside the bottom plate, and the adjusting mechanism is used to adjust the positioning mechanism;

[0008] The positioning mechanism includes a driving component and a supporting component, the supporting component is used to support the workpiece, the driving component can drive the supporting component to operate, the supporting component includes two mounting frames, the two mounting frames are both arranged on the top of the bottom plate, two supporting plates are fixedly connected inside the mounting frame, two positioning frames 2 are arranged on the opposite sides of the two opposing supporting plates, a pressing plate is arranged on the top of the inner side of the mounting frame, and two positioning frames 1 are installed inside the pressing plate;

[0009] As a further description of the above technical solution:

[0010] The adjustment mechanism includes a moving component and a fixed component, the moving component includes a threaded rod, the threaded rod is rotatably connected to the inside of the bottom plate, the outer circumference of the threaded rod is threadedly connected to two moving blocks, the moving blocks are slidably connected to the inside of the bottom plate, and the top side of the moving block is fixedly connected to the bottom side of one of the installation frames;

[0011] As a further description of the above technical solution:

[0012] The driving assembly includes two electric push rods, which are installed on the mounting frame, and the telescopic ends of the electric push rods are fixedly connected to the top side of the pressing plate, one side of the pressing plate is fixedly connected to two connecting rods, the bottom of the connecting rods is fixedly connected to a guide plate, and one end of two adjacent positioning frames is slidably connected to the inside of the guide plate;

[0013] As a further description of the above technical solution:

[0014] The fixing assembly includes a gear, which is mounted on the outer periphery of the threaded rod. A movable shaft is slidably connected inside the bottom plate, and a baffle is fixedly connected to the bottom end of the movable shaft, and the baffle abuts against the outer periphery of the gear;

[0015] As a further description of the above technical solution:

[0016] Two sliders are fixedly connected to the second outer periphery of the positioning frame, and the sliders are slidably connected to the inside of the support plate;

[0017] As a further description of the above technical solution:

[0018] Two guide rods are slidably connected inside the installation frame, and the bottom ends of the guide rods are fixedly connected to the top side of the pressing plate;

[0019] As a further description of the above technical solution:

[0020] A spring is sleeved on the outer periphery of the movable shaft, the top end of the spring is fixedly connected to the inside of the bottom plate, and the bottom end of the spring is fixedly connected to the top side of the baffle;

[0021] As a further description of the above technical solution:

[0022] One of the installation frames is slidably connected to the top side of the base plate, and the other installation frame is fixedly connected to the top side of the base plate.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, a positioning mechanism is provided on the top of the bottom plate to position the tubular workpiece so that the tubular workpiece can be kept stable during the welding process. The positioning mechanism can position tubular workpieces of different sizes, thereby increasing the application range of the device;

[0025] 2. In the present invention, by arranging an adjustment mechanism inside the bottom plate, the distance between the two mounting frames can be adjusted so that the device can be positioned using tubular workpieces of different lengths, thereby making the device adaptable to different use ranges. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of a laser welding tubular workpiece positioning device proposed by the utility model;

[0027] Figure 2 This is a structural schematic diagram of an installation frame of a laser welding tubular workpiece positioning device proposed by the utility model;

[0028] Figure 3 This is a structural schematic diagram of a slider of a laser welding tubular workpiece positioning device proposed by the utility model;

[0029] Figure 4 This is a structural schematic diagram of a threaded rod of a laser welding tubular workpiece positioning device proposed by the utility model;

[0030] Figure 5 for Figure 4 Enlarged view of point A in .

[0031] Legend:

[0032] 1. Bottom plate; 2. Positioning mechanism; 201. Driving assembly; 2011. Connecting rod; 2012. Guide plate; 2013. Guide rod; 2014. Electric push rod; 202. Support assembly; 2021. Mounting frame; 2022. Support plate; 2023. Positioning frame 1; 2024. Press plate; 2025. Positioning frame 2; 3. Adjusting mechanism; 301. Moving assembly; 3011. Threaded rod; 3012. Moving block; 302. Fixed assembly; 3021. Baffle; 3022. Gear; 3023. Spring; 3024. Moving shaft; 4. Slider. DETAILED DESCRIPTION

[0033] 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 in 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.

[0034] Reference Figure 1-Figure 3 The utility model provides an embodiment: a laser welding tubular workpiece positioning device, comprising a base plate 1, the base plate 1 is used as the basic structure of the device to install and support other structures, a positioning mechanism 2 is arranged on the top of the base plate 1, the positioning mechanism 2 includes a support assembly 202, the support assembly 202 is used to support the workpiece, the support assembly 202 includes two mounting frames 2021, the two mounting frames 2021 are both arranged on the top of the base plate 1, one of the mounting frames 2021 is slidably connected to the top side of the base plate 1, and the other mounting frame 2021 is fixedly connected to the top side of the base plate 1, the mounting frame 2021 is used to install a support plate 2022, and two support plates 2022 are fixedly connected inside the mounting frame 2021, and the support plate 2 022 plays the role of supporting the movement of the positioning frame 2025. Two positioning frames 2025 are arranged on the opposite sides of the two opposing support plates 2022. The positioning frame 2025 is used to support the tubular workpiece. Two sliders 4 are fixedly connected to the outer periphery of the positioning frame 2025. The sliders 4 are slidably connected to the inside of the support plate 2022. The sliders 4 slide inside the support plate 2022 to support the movement of the positioning frame 2025. A pressure plate 2024 is arranged on the top of the inner side of the installation frame 2021. The pressure plate 2024 can push the tubular workpiece to fit closely against the positioning frame 2025. Two positioning frames 1 2023 are installed inside the pressure plate 2024. The positioning frame 1 2023 plays the role of reducing the friction between the tubular workpiece and the pressure plate 2024.

[0035] Reference Figure 1 , Figure 4 An adjusting mechanism 3 is provided inside the bottom plate 1, and the adjusting mechanism 3 is used to adjust the positioning mechanism 2. The adjusting mechanism 3 includes a moving assembly 301, and the moving assembly 301 includes a threaded rod 3011, and the threaded rod 3011 is rotatably connected inside the bottom plate 1. A turntable is installed on the left end of the threaded rod 3011. Rotating the turntable can rotate the threaded rod 3011, and the rotation of the threaded rod 3011 can drive the moving block 3012 to move. Two moving blocks 3012 are threadedly connected to the outer periphery of the threaded rod 3011, and the moving block 3012 is slidably connected to the inside of the bottom plate 1. The top side of the moving block 3012 is fixedly connected to the bottom side of one of the installation frames 2021, and the moving block 3012 can drive one of the installation frames 2021 to move along the threaded rod 3011.

[0036] Reference Figure 1 , Figure 2The positioning mechanism 2 includes a driving assembly 201, which can drive the supporting assembly 202 to operate. The driving assembly 201 includes two electric push rods 2014, which are installed in the mounting frame 2021. The telescopic ends of the electric push rods 2014 are fixedly connected to the top side of the pressing plate 2024. The telescopic ends of the electric push rods 2014 can be telescoped to drive the pressing plate 2024 to move. Two connecting rods 2011 are fixedly connected to one side of the pressing plate 2024. The connecting rods 2011 serve to connect the pressing plate 2024 and the guide plate 2012 to each other. Function: a guide plate 2012 is fixedly connected to the bottom of the connecting rod 2011, one end of two adjacent positioning frames 2025 are slidably connected inside the guide plate 2012, two guide grooves are provided inside the guide plate 2012, and the distance between the two positioning frames 2025 can be adjusted during the sliding process of one end of the positioning frame 2025 in the guide groove, and two guide rods 2013 are slidably connected inside the installation frame 2021, and the bottom end of the guide rod 2013 is fixedly connected to the top side of the pressure plate 2024. Installing the guide rod 2013 can guide the pressure plate 2024 to move stably.

[0037] Reference Figure 4 , Figure 5 The adjusting mechanism 3 includes a fixing assembly 302, and the fixing assembly 302 includes a gear 3022, which is mounted on the outer periphery of the threaded rod 3011. A movable shaft 3024 is slidably connected inside the bottom plate 1. The movable shaft 3024 slides inside the bottom plate 1 to drive the baffle 3021 to move. The bottom end of the movable shaft 3024 is fixedly connected to the baffle 3021, and the baffle 3021 abuts against the outer periphery of the gear 3022. A plurality of teeth are installed on the bottom side of the baffle 3021. The teeth and the gear 3022 are meshed with each other to prevent the gear 3022 from rotating. A spring 3023 is sleeved on the outer periphery of the movable shaft 3024. The top end of the spring 3023 is fixedly connected to the inside of the bottom plate 1, and the bottom end of the spring 3023 is fixedly connected to the top side of the baffle 3021. The spring 3023 can push the baffle 3021 to be close to the gear 3022.

[0038] Working principle: Before using the device, adjust the distance between the two installation frames 2021 according to the lengths of the two tubular workpieces to be welded. Pull the moving shaft 3024 to separate the baffle 3021 from the gear 3022, then rotate the turntable to drive the threaded rod 3011 to rotate, and the rotation of the threaded rod 3011 can make the two moving blocks 3012 drive one of the installation frames 2021 to move, thereby adjusting the distance between the two installation frames 2021, and then place the two tubular workpieces in the two installation frames 2021 respectively.

[0039] After the tubular workpiece is placed on the top of two adjacent positioning frames 2025, the two electric push rods 2014 are started. The telescopic ends of the electric push rods 2014 are extended to push the pressure plate 2024 to move toward the tubular workpiece. During the movement of the pressure plate 2024, the connecting rod 2011 drives the guide plate 2012 to move downward. During the movement of the guide plate 2012, one end of the positioning frame 2025 slides inside the guide groove so that the two positioning frames 2025 move toward each other, so that the two positioning frames 2025 and the pressure plate 2024 fix the tubular workpiece, and then the two tubular workpieces can be laser welded.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser welding tubular workpiece positioning device, comprising a base plate (1), characterized in that: A positioning mechanism (2) is arranged on the top of the bottom plate (1), and an adjusting mechanism (3) is arranged inside the bottom plate (1), wherein the adjusting mechanism (3) is used to adjust the positioning mechanism (2); The positioning mechanism (2) comprises a driving component (201) and a supporting component (202); the supporting component (202) is used to support a workpiece; the driving component (201) can drive the supporting component (202) to operate; the supporting component (202) comprises two mounting frames (2021); the two mounting frames (2021) are both arranged on the top of the base plate (1); two supporting plates (2022) are fixedly connected inside the mounting frames (221); two positioning frames (2025) are arranged on opposite sides of the two opposing supporting plates (2022); a pressing plate (2024) is arranged on the top of the inner side of the mounting frames (2021); two positioning frames (2023) are installed inside the pressing plate (224).

2. A laser welding tubular workpiece positioning device according to claim 1, characterized in that: The adjustment mechanism (3) comprises a moving component (301) and a fixed component (302); the moving component (301) comprises a threaded rod (3011); the threaded rod (3011) is rotatably connected to the inside of the base plate (1); two moving blocks (3012) are threadedly connected to the outer periphery of the threaded rod (3011); the moving blocks (3012) are slidably connected to the inside of the base plate (1); and the top side of the moving block (3012) is fixedly connected to the bottom side of one of the mounting frames (2021).

3. The laser welding tubular workpiece positioning device according to claim 1, characterized in that: The driving assembly (201) comprises two electric push rods (2014), the electric push rods (2014) are mounted on the mounting frame (2021), the telescopic ends of the electric push rods (2014) are fixedly connected to the top side of the pressing plate (2024), one side of the pressing plate (2024) is fixedly connected to two connecting rods (211), the bottom of the connecting rods (2011) is fixedly connected to a guide plate (212), and one end of two adjacent positioning frames (2025) is slidably connected to the inside of the guide plate (2012).

4. The laser welding tubular workpiece positioning device according to claim 2, characterized in that: The fixing assembly (302) comprises a gear (3022), the gear (3022) being mounted on the outer periphery of the threaded rod (3011), a movable shaft (3024) being slidably connected inside the bottom plate (1), a baffle (3021) being fixedly connected to the bottom end of the movable shaft (3024), and the baffle (3021) abutting against the outer periphery of the gear (3022).

5. The laser welding tubular workpiece positioning device according to claim 1, characterized in that: Two sliding blocks (4) are fixedly connected to the outer periphery of the second positioning frame (2025), and the sliding blocks (4) are slidably connected to the interior of the support plate (2022).

6. The laser welding tubular workpiece positioning device according to claim 1, characterized in that: Two guide rods (2013) are slidably connected inside the installation frame (2021), and the bottom ends of the guide rods (2013) are fixedly connected to the top side of the pressing plate (2024).

7. The laser welding tubular workpiece positioning device according to claim 4, characterized in that: A spring (3023) is sleeved on the outer periphery of the movable shaft (3024), the top end of the spring (3023) is fixedly connected to the inside of the bottom plate (1), and the bottom end of the spring (3023) is fixedly connected to the top side of the baffle (3021).

8. The laser welding tubular workpiece positioning device according to claim 1, characterized in that: One of the installation frames (2021) is slidably connected to the top side of the base plate (1), and the other installation frame (2021) is fixedly connected to the top side of the base plate (1).

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