Welding equipment for mandrel production

Abstract

The utility model discloses welding equipment for mandrel production and relates to the field of welding. The welding equipment for mandrel production comprises a workbench, the top of the workbench is connected with a supporting plate and a mounting plate which are oppositely arranged, the top of the supporting plate is connected with a top plate, the top plate is provided with a moving hole extending in the length direction of the workbench, and a sliding block capable of moving along the moving hole and a moving mechanism used for driving the sliding block to move along the moving hole are arranged in the moving hole; the mounting plate is connected with a core shaft fixing mechanism, the core shaft fixing mechanism is used for fixing a core shaft located below the moving hole and driving the fixed core shaft to rotate around the axis of the core shaft, and the sliding block is connected with a laser welding head used for welding the core shaft fixed by the core shaft fixing mechanism; the workbench is further connected with a cooling mechanism used for cooling the core shaft fixed by the core shaft fixing mechanism. According to the welding equipment for mandrel production, the mandrel can be fixed and rotated for rapid and efficient welding operation, meanwhile, the mandrel is cooled during welding, cracks are avoided, and the mandrel repairing quality is improved.

Description

Technical Field

[0001] The present application relates to the field of welding, and more particularly, to a welding device for mandrel production. Background Art

[0002] The mandrel (usually referred to as the axis or central axis) in the segment roll of a continuous caster is a key component of the continuous caster. It plays roles of support, transmission, guidance, and heat dissipation during the continuous casting process. After being used for a period of time, the mandrel will be worn and needs to be repaired to avoid affecting normal operation.

[0003] The repair process of the mandrel usually involves a series of steps aimed at restoring its structural integrity, dimensional accuracy, and surface quality. Welding is a common process in mandrel repair. When repairing the mandrel, it is necessary to continuously adjust the position of the mandrel to weld different parts of the mandrel, resulting in very low welding repair efficiency and difficult to meet the requirements of mandrel repair. Summary of the Utility Model

[0004] The purpose of the present application is to provide a welding device for mandrel production, which can fix and rotate the mandrel for fast and efficient welding operations, and at the same time cool the mandrel during welding to avoid crack generation and improve the quality of mandrel repair.

[0005] The present application is implemented as follows:

[0006] The present application provides a welding device for mandrel production, which includes a workbench. A support plate and a mounting plate are connected to the top of the workbench and are arranged oppositely. The top of the support plate is connected to a top plate. The top plate is provided with a moving hole extending along the length direction of the workbench. A slider that can move along the moving hole and a moving mechanism for driving the slider to move along the moving hole are provided in the moving hole. The mounting plate is connected with a mandrel fixing mechanism, which is used to fix the mandrel located below the moving hole and drive the fixed mandrel to rotate around its axis. The slider is connected with a laser welding head for welding the mandrel fixed by the mandrel fixing mechanism. The workbench is also connected with a cooling mechanism for cooling the mandrel fixed by the mandrel fixing mechanism.

[0007] In some alternative embodiments, the mandrel fixing mechanism includes a fixing cylinder with one end that can be sleeved on the end of the mandrel and a rotating rod coaxially connected to the other end of the fixing cylinder. The rotating rod rotatably penetrates the mounting plate. A locking bolt is connected to the outer wall of the fixing cylinder by a thread. The locking bolt is configured to move axially along its axis when rotating to insert into or withdraw from the fixing cylinder to press against or stop pressing against the mandrel.

[0008] In some alternative embodiments, a locking disk is connected to the end of the rotating rod away from the fixing cylinder. A plurality of positioning teeth are arranged at intervals along the circumferential direction on the outer wall of the locking disk. A limiting plate is hinged to the mounting plate. When the locking disk rotates, the limiting plate rotates to be caught in or withdrawn from between two adjacent positioning teeth.

[0009] In some alternative embodiments, an arc-shaped pressing plate is provided inside the fixing cylinder. One end of the locking bolt penetrates into the fixing cylinder and is rotatably connected to the pressing plate. The locking bolt is configured to move axially along its axis when rotating, driving the pressing plate to press or stop pressing the mandrel.

[0010] In some alternative embodiments, the cooling mechanism includes a cooling box connected to the top of the workbench. An arc-shaped groove is provided at the top of the cooling box, and the arc-shaped groove is used to support the mandrel fixed by the mandrel fixing mechanism. A cooling chamber is provided inside the cooling box, and the cooling box is provided with a liquid inlet and a liquid outlet.

[0011] In some alternative embodiments, at least one buffer mechanism is provided on the top of the workbench. The buffer mechanism includes a groove plate provided on the side of the cooling box and a heat-resistant buffer pad provided on the top surface of the groove plate.

[0012] In some alternative embodiments, the support plate is connected to an exhaust gas collection box and an air pump connected to the exhaust gas collection box. The exhaust gas collection box is connected to an exhaust gas collection pipe located below the moving hole, and the exhaust gas collection pipe is connected to a plurality of suction pipes arranged at intervals.

[0013] In some alternative embodiments, the exhaust gas collection pipe is U-shaped and sleeved outside the laser welding head.

[0014] In some alternative embodiments, a filter screen is provided inside the exhaust gas collection box.

[0015] In some alternative embodiments, the slider is connected to the laser welding head through a lifting mechanism, and the lifting mechanism is used to drive the laser welding head to lift.

[0016] The beneficial effects of the present application are as follows: The welding equipment for mandrel production provided by the present application includes a workbench. Oppositely arranged support plates and mounting plates are connected to the top of the workbench. The top of the support plate is connected to a top plate, and a moving hole extending along the length direction of the workbench is provided on the top plate. A slider that can move along it and a moving mechanism for driving the slider to move along the moving hole are provided inside the moving hole; the mounting plate is connected to a mandrel fixing mechanism, and the mandrel fixing mechanism is used to fix the mandrel located below the moving hole and drive the fixed mandrel to rotate around its axis. The slider is connected to a laser welding head for welding the mandrel fixed by the mandrel fixing mechanism; the workbench is also connected to a cooling mechanism for cooling the mandrel fixed by the mandrel fixing mechanism. The welding equipment for mandrel production provided by the present application can fix and rotate the mandrel for rapid and efficient welding operations, and at the same time cool the mandrel during welding to avoid cracks and improve the quality of mandrel repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the welding equipment for mandrel production provided by the embodiments of the present application;

[0019] Figure 2 Structural schematic diagram of the mandrel fixing mechanism in the welding equipment for mandrel production provided by the embodiments of the present application;

[0020] Figure 3 Cross-sectional structural schematic diagram of the mandrel fixing mechanism in the welding equipment for mandrel production provided by the embodiments of the present application;

[0021] Figure 4 Cross-sectional structural schematic diagram of the cooling box in the welding equipment for mandrel production provided by the embodiments of the present application from the first perspective;

[0022] Figure 5 Cross-sectional structural schematic diagram of the cooling box of the welding equipment for mandrel production provided by the embodiments of the present application from the second perspective.

[0023] In the figure: 100, workbench; 110, support plate; 120, mounting plate; 130, top plate; 140, moving hole; 150, slider; 160, laser welding head; 170, first electric push rod; 180, second electric push rod; 200, mandrel fixing mechanism; 210, fixing cylinder; 220, rotating rod; 230, locking bolt; 240, locking disk; 250, positioning tooth; 260, limiting plate; 270, pressing plate; 300, cooling mechanism; 310, cooling box; 320, arc groove; 330, cooling cavity; 340, liquid inlet; 350, liquid outlet; 360, groove plate; 370, heat-resistant buffer pad; 400, waste gas collection mechanism; 410, waste gas collection box; 420, air pump; 430, waste gas collection pipe; 440, suction pipe. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0026] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0027] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0029] In the description of the present application, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] In this application, unless otherwise clearly defined and limited, the first feature being “on” or “under” the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being “under”, “beneath” and “underneath” the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0031] The features and performance of the welding equipment for mandrel production according to the present application will be further described in detail below in conjunction with embodiments.

[0032] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0033] The mounting plate 120 is connected with a mandrel fixing mechanism 200 which is used for fixing the mandrel located below the moving hole 140 and driving the fixed mandrel to rotate around its own axis. The slider 150 is connected with a laser welding head 160 through a lifting mechanism. The laser welding head 160 is used for welding the mandrel fixed by the mandrel fixing mechanism 200. The lifting mechanism is a second electric push rod 180 with two ends respectively connected to the slider 150 and the laser welding head 160. The mandrel fixing mechanism 200 includes a fixing cylinder 210 with one end sleeved on the end of the mandrel. The other end of the fixing cylinder 210 is closed and coaxially connected with a rotating rod 220. The rotating rod 220 rotatably penetrates through the mounting plate 120 and is connected with a locking disc 240. The outer wall of the locking disc 240 is connected with positioning teeth 250 arranged at intervals along its circumference. The mounting plate 120 is hinged with a limiting plate 260. When the locking disc 240 rotates, the limiting plate 260 rotates and is clamped into or disengaged from between two adjacent positioning teeth 250. The outer wall of the fixing cylinder 210 is connected with a locking bolt 230 through threads. An arc-shaped pressing plate 270 is arranged in the fixing cylinder 210. One end of the locking bolt 230 penetrates through the fixing cylinder 210 through threads and is rotatably connected to the pressing plate 270. When the locking bolt 230 rotates, it moves along its axial direction to drive the pressing plate 270 to press or stop pressing the end of the mandrel inserted into the fixing cylinder 210.

[0034] The workbench 100 is also connected with a cooling mechanism 300 for cooling the mandrel fixed by the mandrel fixing mechanism 200. The cooling mechanism 300 includes a cooling box 310 connected to the top of the workbench 100. An arc-shaped groove 320 is arranged at the top of the cooling box 310 and is used for supporting the mandrel fixed by the mandrel fixing mechanism 200. A cooling cavity 330 is arranged in the cooling box 310. The cooling box 310 is provided with a liquid inlet 340 and a liquid outlet 350. When the mandrel is placed in the arc-shaped groove 320, it axially moves to insert into or disengage from the fixing cylinder 210 of the mandrel fixing mechanism 200. Two buffer mechanisms are arranged on the top of the workbench 100 and are respectively arranged on both sides of the cooling box 310. The buffer mechanism includes a groove plate 360 and a heat-resistant buffer pad 370 arranged on the top surface of the groove plate 360.

[0035] The support plate 110 is connected with an exhaust gas collection mechanism 400 which is used for collecting the exhaust gas generated by the laser welding head 160 when welding the mandrel fixed by the mandrel fixing mechanism 200. The exhaust gas collection mechanism 400 includes an exhaust gas collection box 410 penetrating and fixed on the support plate 110 and an air pump 420 connected to the top of the exhaust gas collection box 410. The exhaust gas collection box 410 is connected with an exhaust gas collection pipe 430 located below the moving hole 140. The exhaust gas collection pipe 430 is U-shaped and sleeved outside the laser welding head 160. The bottom of the exhaust gas collection pipe 430 is connected with suction pipes 440 arranged at intervals. A filter screen is arranged in the exhaust gas collection box 410.

[0036] The working principle of the welding equipment for mandrel production provided by the embodiments of the present application is as follows: First, the operator places the mandrel to be welded in the arc-shaped groove 320 provided at the top of the cooling box 310 for support, aligning the mandrel supported by the arc-shaped groove 320 with the fixing cylinder 210 of the mandrel fixing mechanism 200. Subsequently, the mandrel is pushed along the arc-shaped groove 320 so that one end of the mandrel is inserted into the fixing cylinder 210 of the mandrel fixing mechanism 200. At this time, the locking bolt 230 threadedly connected to the outer wall of the fixing cylinder 210 can be rotated, and the locking bolt 230 moves axially and radially of the rotating fixing cylinder 210 to drive the pressing plate 270 in the fixing cylinder 210 to move and press against and fix the mandrel, locking the mandrel and the fixing cylinder 210 of the mandrel fixing mechanism 200. The cooling water is introduced into the cooling box 310 through the liquid inlet 340 and discharged through the liquid outlet 350 using an external pipeline. Then, the second electric push rod 180 can be controlled to drive the laser welding head 160 connected to its bottom to descend to a preset position to weld the outer surface of the mandrel supported by the arc-shaped groove 320. At the same time, the operator can control the first electric push rod 170 to drive the slider 150 to move along the moving hole 140, driving the lifting mechanism and the laser welding head 160 connected to the slider 150 to move along the moving hole 140, so that the laser welding head 160 moves along the length direction of the workbench 100 and the axial direction of the mandrel to weld different positions on the outer surface of the mandrel. The operator can also push the locking disk 240 to rotate, thereby driving the rotating rod 220 and the fixing cylinder 210 connected to the locking disk 240 to rotate, and thus driving the mandrel fixed at one end to the fixing cylinder 210 to rotate around its axis, so as to facilitate welding different positions on the outer surface of the mandrel using the laser welding head 160 above the mandrel. When the mandrel does not need to be rotated, the limiting plate 260 hinged to the mounting plate 120 can be rotated so that the limiting plate 260 is caught between two adjacent positioning teeth 250 connected to the locking disk 240 to limit the position of the locking disk 240 and lock the positions of the rotating rod 220 and the fixing cylinder 210. When welding is performed by driving the locking disk 240, the rotating rod 220 and the fixing cylinder 210 to rotate and drive the mandrel to rotate around its axis, the cooling liquid flowing through the internal cooling cavity 330 of the cooling box 310 below the arc-shaped groove 320 supporting the mandrel cools the outer wall of the mandrel, which can avoid cracks on the outer wall of the mandrel caused by excessive temperature during welding and improve the welding quality of the mandrel.

[0037] In addition, the support plate 110 is also connected with an exhaust gas collection mechanism 400. The exhaust gas collection mechanism 400 can collect the exhaust gas generated during the welding of the mandrel fixed by the mandrel fixing mechanism 200 by the laser welding head 160. By controlling the air pump 420 to start, the exhaust gas generated during the welding of the mandrel by the laser welding head 160 can be sucked through the suction pipe 440 connected to the bottom of the exhaust gas collection pipe 430 into the exhaust gas collection box 410 and discharged after being filtered by the filter screen, thereby ensuring the air quality at the welding operation site and avoiding damage to the bodies of the operators caused by the welding atmosphere.

[0038] On the top of the workbench 100, there are two buffer mechanisms respectively arranged on both sides of the cooling box 310. The buffer mechanism includes a groove plate 360 and a heat-resistant buffer pad 370 arranged on the top surface of the groove plate 360. After the operator finishes welding the mandrel, the rotation locking bolt 230 can move along its axial direction and the radial direction of the rotation fixing cylinder 210 to drive the pressing plate 270 in the fixing cylinder 210 to move and stop pressing and fixing the mandrel. Then, the mandrel can be moved to the top of the groove plate 360 on the side of the cooling box 310 and the heat-resistant buffer pad 370 for heat dissipation and buffering, which is convenient for flow operation and avoids damage caused by the processed mandrel directly contacting the top of the workbench 100.

[0039] The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

Claims

1. A welding device for mandrel production, characterized in that, It includes a workbench. A support plate and a mounting plate arranged oppositely are connected to the top of the workbench. A top plate is connected to the top of the support plate. A moving hole extending along the length direction of the workbench is formed in the top plate. A slider capable of moving along the moving hole and a moving mechanism for driving the slider to move along the moving hole are provided in the moving hole. The mounting plate is connected with a mandrel fixing mechanism, which is used to fix the mandrel located below the moving hole and drive the fixed mandrel to rotate around its axis. The slider is connected with a laser welding head for welding the mandrel fixed by the mandrel fixing mechanism. The workbench is also connected with a cooling mechanism for cooling the mandrel fixed by the mandrel fixing mechanism.

2. The welding device for mandrel production according to claim 1, characterized in that The mandrel fixing mechanism includes a fixing cylinder with one end sleeved on the end of the mandrel and a rotating rod coaxially connected to the other end of the fixing cylinder. The rotating rod rotatably penetrates through the mounting plate. A locking bolt is connected to the outer wall of the fixing cylinder by a thread. The locking bolt is configured to move axially along its axis when rotating to insert into or withdraw from the fixing cylinder to press or stop pressing the mandrel.

3. The welding equipment for mandrel production according to claim 2, characterized in that, A locking disc is connected to the end of the rotating rod away from the fixing cylinder. A plurality of positioning teeth arranged at intervals along its circumferential direction are connected to the outer wall of the locking disc. A limiting plate is hinged to the mounting plate. When the locking disc rotates, the limiting plate rotates to be clamped into or withdrawn from between two adjacent positioning teeth.

4. The welding equipment for mandrel production according to claim 2, characterized in that, An arc-shaped pressing plate is provided in the fixing cylinder. One end of the locking bolt penetrates into the fixing cylinder and is rotatably connected to the pressing plate. The locking bolt is configured to drive the pressing plate to press or stop pressing the mandrel when moving axially along its axis when rotating.

5. The welding equipment for mandrel production according to claim 1, characterized in that, The cooling mechanism includes a cooling box connected to the top of the workbench. An arc-shaped groove is provided on the top of the cooling box, which is used to support the mandrel fixed by the mandrel fixing mechanism. A cooling cavity is provided in the cooling box. The cooling box is provided with a liquid inlet and a liquid outlet.

6. The welding equipment for mandrel production according to claim 1, wherein, At least one buffer mechanism is provided on the top of the workbench. The buffer mechanism includes a groove plate provided on the side of the cooling box and a heat-resistant buffer pad provided on the top surface of the groove plate.

7. The welding equipment for mandrel production according to claim 1, wherein The support plate is connected with an exhaust gas collection box and an air pump connected to the exhaust gas collection box. The exhaust gas collection box is connected with an exhaust gas collection pipe located below the moving hole. The exhaust gas collection pipe is connected with a plurality of suction pipes arranged at intervals.

8. The welding equipment for mandrel production according to claim 7, wherein, The exhaust gas collection pipe is U-shaped and sleeved outside the laser welding head.

9. The welding device for mandrel production according to claim 7, characterized in that, A filter screen is provided in the exhaust gas collection box.

10. The welding equipment for mandrel production according to claim 1, characterized in that, The slider is connected with the laser welding head through a lifting mechanism, and the lifting mechanism is used to drive the laser welding head to lift and lower.

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