Distribution valve body welding air hole defect eliminating device

Abstract

The utility model discloses a distribution valve body welding air hole defect eliminating device which comprises a welding base, a laser welding head fixedly installed at the lower end of the welding base, movable blocks and an auxiliary mechanism, the movable blocks are rotationally connected to the left end and the right end of the welding base respectively, and the auxiliary mechanism is arranged at the upper end of the welding base. The auxiliary mechanism is composed of an eccentric wheel, a movable frame and a rail, connecting columns are arranged on the left side and the right side of the movable frame, and the auxiliary mechanism, the connecting columns, the linkage column and the movable block drive the light beam irradiation pen to form a front-back swing structure on the side face of the welding base. According to the distribution valve body welding air hole defect eliminating device, swing is added in the welding process, so that part of welding seams are repeatedly remelted, the depth-to-width ratio of the welding seams is reduced, bubbles can conveniently emerge, the effect of eliminating air holes is helped to be achieved, and the stability in the whole swing process is improved in combination with front-back sliding between the movable frame and the rail.

Description

Technical Field

[0001] This utility model relates to the technical field of welding of distribution valve bodies, specifically a device for eliminating welding porosity defects in distribution valve bodies. Background Technology

[0002] A distribution valve is a device that controls the charging and discharging of air cylinders based on pressure changes within the train pipe, thereby enabling the locomotive to brake, maintain pressure, or release pressure. The distribution valve plays a vital role in the train, acting as its "heart" to ensure safe train operation. During the manufacturing process of the distribution valve, the valve body needs to undergo relevant welding operations.

[0003] However, during the welding process of the distribution valve, welding pores may occur, which are cavities formed when gas does not have time to escape and remains in the weld. Welding pores constitute a welding defect, reduce the strength of the distribution valve body, and there is an urgent need for a device to eliminate the pores.

[0004] To address this issue, we propose a device for eliminating welding porosity defects in distribution valve bodies. Utility Model Content

[0005] The purpose of this utility model is to provide a device for eliminating welding porosity defects in a distribution valve body, in order to solve the problem mentioned in the background art that welding porosity, i.e., the holes formed by gas not having time to escape and remaining in the weld, is a welding defect that reduces the strength of the distribution valve body, and there is an urgent need for a device to eliminate the porosity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for eliminating welding porosity defects in a distribution valve body, comprising a welding seat and a laser welding head fixedly installed at the lower end of the welding seat;

[0007] Also includes:

[0008] The movable block is rotatably connected to the left and right ends of the welding seat, and a mounting seat is fixedly connected to the outer side of the movable block. A beam irradiation pen is inserted into the middle of the mounting seat, and protrusions for support and positioning are fixedly connected to the front and rear sides of the upper end of the beam irradiation pen.

[0009] The mounting base has a fixing plate on its outer side, and the fixing plate together with the protrusion drives the beam irradiation pen to form a disassembly structure in the middle of the mounting base.

[0010] An auxiliary mechanism is provided at the upper end of the welding seat. The auxiliary mechanism consists of an eccentric wheel, a movable frame, and a track. Connecting columns are provided on both the left and right sides of the movable frame, and the connecting columns are sleeved on the outer surface of the linkage column.

[0011] The auxiliary mechanism, together with the connecting column, the linkage column and the movable block, drives the beam irradiation pen to form a back-and-forth swing structure on the side of the welding seat.

[0012] Preferably, the protrusions are respectively engaged and connected to the front and rear ends of the mounting base, and a support rod with a "T"-shaped structure is fixedly connected to the outer side of the mounting base.

[0013] Preferably, a spring is sleeved on the outer surface of the support rod, and a fixing plate is fixedly connected to the movable end of the spring, forming a left-right sliding structure between the fixing plate and the support rod.

[0014] Preferably, the fixing plate and the protrusion are engaged and connected.

[0015] Preferably, a fixed bracket is fixedly connected to the upper end of the welding seat, and a reduction motor for driving is fixedly installed in the middle of the upper end of the fixed bracket. An eccentric wheel is fixedly connected to the output end of the reduction motor, and the reduction motor drives the eccentric wheel to rotate inside the movable frame.

[0016] Preferably, the eccentric wheel is fitted to the inner sidewall of the movable frame, and the left and right sides of the lower end of the movable frame form a front-to-back sliding structure with the track, and the track is fixedly connected to the left and right sides of the upper end of the welding seat.

[0017] Preferably, the movable frame and the connecting column form a rotating structure, and the connecting column and the linkage column form a sliding structure, with the linkage column fixedly connected to the upper end of the movable block.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the valve body welding porosity defect elimination device drives the movable block to rotate on the side of the welding seat through the auxiliary mechanism, so that the movable block together with the mounting seat drives the beam irradiation pen to swing back and forth on both sides of the laser welding head. By adding swinging during the welding process, some welds are repeatedly remelted, thereby reducing the depth-to-width ratio of the weld and facilitating the floating of air bubbles, thus helping to eliminate porosity. Combined with the back-and-forth sliding between the movable frame and the track, the stability of the entire swinging process is improved.

[0019] 1. It is equipped with a mounting base, a protrusion and a fixing plate. The beam irradiation pen is inserted into the mounting base and engaged with the fixing plate and the protrusion to facilitate the limiting of the beam irradiation pen and the mounting base, thereby facilitating the installation of the beam irradiation pen and the mounting base.

[0020] 2. An auxiliary mechanism is provided, which includes an eccentric wheel, a movable frame, and a track. Through the setting of the auxiliary mechanism, the connecting column and the linkage column can slide together, and the movable frame and the track can slide back and forth. The overall driving process can be stable.

[0021] 3. It is equipped with a connecting column, a linkage column and a movable block. The sliding between the connecting column and the linkage column drives the movable block to rotate on the side of the welding seat, thereby driving the beam irradiation pen to swing back and forth on both sides of the laser welding head, which helps to eliminate porosity. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0024] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is an exploded bottom view of the mounting base, beam irradiation pen, protrusion, and fixing plate of this utility model.

[0026] Figure 5 This is a schematic diagram of the overall structure of the auxiliary mechanism of this utility model;

[0027] Figure 6 This is a schematic diagram of the overall structure of the movable block, connecting column, and linkage column of this utility model.

[0028] In the diagram: 1. Welding base; 2. Laser welding head; 3. Movable block; 4. Mounting base; 5. Beam irradiation pen; 6. Protrusion; 7. Support rod; 8. Spring; 9. Fixing plate; 10. Fixing bracket; 11. Gear motor; 12. Auxiliary mechanism; 13. Eccentric wheel; 14. Movable frame; 15. Track; 16. Connecting column; 17. Linkage column. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 The present invention provides the following technical solution.

[0031] Example 1: To address the problems existing in the prior art, this example provides a device for eliminating welding porosity defects in a distribution valve body. The device comprises a welding seat 1, a laser welding head 2, a movable block 3, a mounting seat 4, a laser beam irradiation pen 5, a protrusion 6, a support rod 7, a spring 8, and a fixing plate 9. The movable block 3 is rotatably connected to the left and right ends of the welding seat 1, and the mounting seat 4 is fixedly connected to the outer side of the movable block 3. The laser beam irradiation pen 5 is inserted into the middle of the mounting seat 4, and both the front and rear sides of the upper end of the laser beam irradiation pen 5 are fixedly connected to... The mounting base 4 has protrusions 6 for support and positioning. A fixing plate 9 is provided on the outer side of the mounting base 4. The fixing plate 9, together with the protrusions 6, drives the beam irradiation pen 5 to form a disassembly structure in the middle of the mounting base 4. The protrusions 6 are respectively engaged and connected to the front and rear ends of the mounting base 4. A support rod 7 with a "T" shape is fixedly connected to the outer side of the mounting base 4. A spring 8 is sleeved on the outer surface of the support rod 7, and the movable end of the spring 8 is fixedly connected to the fixing plate 9. The fixing plate 9 and the support rod 7 form a left-right sliding structure. The fixing plate 9 and the protrusions 6 are engaged and connected, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, firstly, by pressing the fixing plate 9, the fixing plate 9 slides between itself and the support rod 7, and the fixing plate 9 compresses the spring 8, causing the spring 8 to undergo elastic deformation. Then, the upper end of the beam irradiation pen 5 is inserted into the mounting base 4. At the same time, the beam irradiation pen 5 drives the protrusions 6 to engage with the front and rear ends of the mounting base 4 respectively. The protrusions 6 enter the fixing plate 9 through the notches at the lower ends of the front and rear sides of the fixing plate 9. Then, the fixing plate 9 is released directly. At this time, the spring 8 returns to its elastic deformation, pushing the fixing plate 9 to slide between itself and the support rod 7, so that the fixing plate 9 and the support rod 7 engage, thereby facilitating the limiting of the protrusions 6 and the mounting base 4, and facilitating the disassembly and assembly of the beam irradiation pen 5.

[0032] Example 2: To address the problem in the prior art where welding porosity (holes formed when gas cannot escape and remains in the weld seam) is a common defect in the welding process of distribution valves, reducing the strength of the distribution valve body, this example provides a device for eliminating welding porosity defects in distribution valve bodies. The device includes a fixed support 10, a reduction motor 11, an auxiliary mechanism 12, connecting columns 16, and a linkage column 17. The auxiliary mechanism 12 is located at the upper end of the welding seat 1 and consists of an eccentric wheel 13, a movable frame 14, and a track 15. Connecting columns 16 are provided on both the left and right sides of the movable frame 14, and the connecting columns 16 are sleeved on the outer surface of the linkage column 17. The auxiliary mechanism 12, along with the connecting columns 16 and the linkage column 17, forms a complete welding system. The movable block 3 drives the beam irradiation pen 5 to form a back-and-forth swinging structure on the side of the welding base 1. A fixed bracket 10 is fixedly connected to the upper end of the welding base 1, and a reduction motor 11 for driving is fixedly installed in the middle of the upper end of the fixed bracket 10. An eccentric wheel 13 is fixedly connected to the output end of the reduction motor 11, and the reduction motor 11 drives the eccentric wheel 13 to rotate inside the movable frame 14. The eccentric wheel 13 is fitted against the inner side wall of the movable frame 14, and the left and right sides of the lower end of the movable frame 14 form a back-and-forth sliding structure with the track 15. The track 15 is fixedly connected to the left and right sides of the upper end of the welding base 1, respectively. The movable frame 14 and the connecting column 16 form a rotating structure, and the connecting column 16 and the linkage column 17 form a sliding structure. The linkage column 17 is fixedly connected to the upper end of the movable block 3, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, during the welding process, the reduction motor 11 is started, which drives the eccentric wheel 13 to rotate in the movable frame 14. The movable frame 14 slides back and forth with the track 15, and the track 15 rotates with the connecting column 16, which in turn drives the connecting column 16 to slide with the linkage column 17. The linkage column 17 is fixed at the upper end of the movable block 3, which in turn drives the movable block 3 to rotate on the side of the welding seat 1. The movable block 3, together with the mounting seat 4, drives the beam irradiation pen 5 to swing back and forth on the side of the welding seat 1. During the welding process, the irradiation and swing of the beam irradiation pen 5 cause some welds to remelt repeatedly, reducing the depth-to-width ratio of the weld, which is conducive to the floating of air bubbles, thereby eliminating porosity.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for eliminating welding porosity defects in a distribution valve body, comprising a welding seat (1) and a laser welding head (2) fixedly installed at the lower end of the welding seat (1); Its features are, Also includes: Movable block (3), the movable block (3) is rotatably connected to the left and right ends of the welding seat (1), and the outer side of the movable block (3) is fixedly connected to the mounting seat (4), the middle of the mounting seat (4) is inserted with a beam irradiation pen (5), and the front and rear sides of the upper end of the beam irradiation pen (5) are fixedly connected with protrusions (6) for support and positioning. Among them, a fixing plate (9) is provided on the outer side of the mounting base (4), and the fixing plate (9) together with the protrusion (6) drives the beam irradiation pen (5) to form a disassembly structure in the middle of the mounting base (4); The auxiliary mechanism (12) is located at the upper end of the welding seat (1). The auxiliary mechanism (12) consists of an eccentric wheel (13), a movable frame (14) and a track (15). The movable frame (14) is provided with connecting columns (16) on both the left and right sides. The connecting columns (16) are sleeved on the outer surface of the linkage column (17). The auxiliary mechanism (12), together with the connecting column (16), the linkage column (17) and the movable block (3), drives the beam irradiation pen (5) to form a back-and-forth swing structure on the side of the welding seat (1).

2. The device for eliminating welding porosity defects in a distribution valve body according to claim 1, characterized in that: The protrusions (6) are respectively engaged and connected to the front and rear ends of the mounting base (4), and a support rod (7) with a "T" shaped structure is fixedly connected to the outside of the mounting base (4).

3. The device for eliminating welding porosity defects in a distribution valve body according to claim 2, characterized in that: A spring (8) is sleeved on the outer surface of the support rod (7), and a fixing plate (9) is fixedly connected to the movable end of the spring (8). The fixing plate (9) and the support rod (7) form a left-right sliding structure.

4. The device for eliminating welding porosity defects in a distribution valve body according to claim 3, characterized in that: The fixing plate (9) and the protrusion (6) are engaged and connected.

5. The device for eliminating welding porosity defects in a distribution valve body according to claim 1, characterized in that: The upper end of the welding seat (1) is fixedly connected to a fixed bracket (10), and a reduction motor (11) for driving is fixedly installed in the middle of the upper end of the fixed bracket (10). The output end of the reduction motor (11) is fixedly connected to an eccentric wheel (13), and the reduction motor (11) drives the eccentric wheel (13) to rotate inside the movable frame (14).

6. The device for eliminating welding porosity defects in a distribution valve body according to claim 5, characterized in that: The eccentric wheel (13) is fitted to the inner side wall of the movable frame (14), and the left and right sides of the lower end of the movable frame (14) form a front-to-back sliding structure with the track (15). The track (15) is fixedly connected to the left and right sides of the upper end of the welding seat (1).

7. The device for eliminating welding porosity defects in a distribution valve body according to claim 6, characterized in that: The movable frame (14) and the connecting column (16) form a rotating structure, and the connecting column (16) and the linkage column (17) form a sliding structure. The linkage column (17) is fixedly connected to the upper end of the movable block (3).

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