A plasma arc welding machine nozzle support device for a robot

Abstract

The application discloses a kind of plasma arc welding machine nozzle support device for robot, including protective cylinder, the outer side wall of the protective cylinder is fixedly connected with fixed seat, the fixed seat is rotatably connected with mounting rod, the mounting rod is slidably connected with sliding seat, the sliding seat is fixedly connected with first support, the end of the mounting rod away from fixed seat is rotatably connected with support rod, the support rod is fixedly connected with second support, the first support and second support are rotatably connected with connecting support rod between them, the end of the support rod is equipped with mobile stabilizing mechanism;The mobile stabilizing mechanism includes moving disc, the lower end surface of the moving disc is equipped with a plurality of rolling balls, and the upper end surface of the moving disc is fixedly connected with mounting seat.The application is ingenious in structure, convenient to use, the nozzle is fixed by the device, the movement of nozzle is realized by rolling ball on the device when welding, the distance between nozzle and workpiece surface is guaranteed during welding, and the quality of welding is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plasma arc welding machines, in particular to a nozzle support device for a robot plasma arc welding machine. BACKGROUND

[0002] The robot plasma arc welding machine, like argon arc welding machine, can be divided into two categories according to the operation mode, namely manual welding and automatic welding. The manual welding device is composed of welding power supply, welding torch, control circuit, gas circuit and cooling system; the automatic welding device is composed of welding power supply, welding torch, welding walking trolley, control circuit, gas circuit and cooling system. The main component of the electric welding machine is a step-down transformer, and the two ends of the secondary coil are the workpiece to be welded and the welding rod. When working, the electric arc is ignited, and the welding rod is melted in the gap of the workpiece in the high temperature of the electric arc. Because the core of the electric welding transformer has its own characteristics, it has the characteristics of sharp voltage drop, that is, the voltage drops after the welding rod is ignited; when the welding rod is adhered to the short circuit, the voltage drops sharply.

[0003] When using the plasma arc welding to cut large panels, the arm needs to be kept stable while moving for a long time or point by point. After long-term use, muscle soreness or fatigue is easy to occur, and it is difficult to continue to maintain the stability of the spray head during the welding process. The shaking during the welding process will affect the quality of the welding finished product, so it is very important to ensure the stability of the spray head during work.

[0004] Therefore, we propose a nozzle support device for a robot plasma arc welding machine to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art and propose a nozzle support device for a robot plasma arc welding machine.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A nozzle support device for a robot plasma arc welding machine, comprising a protective cylinder, a fixed seat is fixedly connected to the outer side wall of the protective cylinder, a mounting rod is rotatably connected to the fixed seat, a sliding seat is slidably connected to the mounting rod, a first support is fixedly connected to the sliding seat, a support rod is rotatably connected to the end of the mounting rod away from the fixed seat, a second support is fixedly connected to the support rod, and a connecting support rod is rotatably connected between the first support and the second support.

[0008] The movement stabilizing mechanism comprises a movement disc, a plurality of rolling balls are installed on the lower end face of the movement disc, an installation seat is fixedly connected to the upper end face of the movement disc, a rotating ball is installed on the installation seat, and the end of the support rod away from the mounting rod is fixedly installed on the rotating ball.

[0009] In the above-mentioned nozzle support device for plasma arc welding machine, a plurality of vertical grooves are symmetrically formed on the outer side wall of the protective cylinder, a T-shaped slider is slidingly connected in each vertical groove, a first spring is mounted on the inner top wall of each vertical groove and the upper surface of the T-shaped slider, a moving rod is fixedly connected to each T-shaped slider, a plurality of insertion rods are symmetrically inserted into the protective cylinder, an inclined connecting rod is rotatably connected between each moving rod and the corresponding insertion rod, and a supporting seat is fixedly connected to the end of each insertion rod away from the inclined connecting rod.

[0010] In the above-mentioned nozzle support device for plasma arc welding machine, a plurality of insertion grooves are symmetrically formed on the protective cylinder, and each insertion rod is located in the corresponding insertion groove, with the outer surface of the insertion rod in contact with the inner wall of the insertion groove.

[0011] In the above-mentioned nozzle support device for plasma arc welding machine, a plurality of anti-skid seats are uniformly mounted on the end surface of each supporting seat away from the insertion rod, and each anti-skid seat is made of rubber.

[0012] In the above-mentioned nozzle support device for plasma arc welding machine, a second spring is mounted on the inner bottom wall of each vertical groove and the lower surface of the T-shaped slider.

[0013] In the above-mentioned nozzle support device for plasma arc welding machine, a limiting groove is formed on the both side walls of the mounting rod, a through hole is formed on the sliding seat, the outer surface of the mounting rod is in contact with the inner wall of the through hole, a limiting block is symmetrically mounted on the inner side wall of the through hole, and each limiting block is slidingly connected in the corresponding limiting groove.

[0014] In the above-mentioned nozzle support device for plasma arc welding machine, a spherical groove is formed on the upper surface of the mounting seat, a rotating ball is located in the spherical groove, a locking seat is mounted on the mounting seat, an external thread is formed on the outer side wall of the mounting seat, an internal thread is formed on the locking seat, and the internal thread cooperates with the external thread.

[0015] In the above-mentioned nozzle support device for plasma arc welding machine, a spherical groove is formed on the upper surface of the mounting seat, a rotating ball is located in the spherical groove, a locking seat is mounted on the mounting seat, an external thread is formed on the outer side wall of the mounting seat, an internal thread is formed on the locking seat, and the internal thread cooperates with the external thread.

[0016] In the above-mentioned nozzle support device for plasma arc welding machine, the inner wall of the spherical groove is in contact with the outer diameter of the rotating ball, and the depth of the spherical groove is greater than the radius of the rotating ball.

[0017] In the nozzle support device for the plasma arc welding machine, a threaded hole is formed in the sliding seat and communicates with the through hole, a locking stud is threadedly connected to the threaded hole, and the lower end of the locking stud abuts against the outer wall of the mounting rod.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The elastic force of the first spring and the second spring restoring to the original length drives the fixed nozzle through the moving rod, the inclined connecting rod and the inserting rod, and the lower end of the nozzle is inserted out of the lower end of the protective cylinder until the nozzle is moved to the appropriate position.

[0020] The rotating ball can rotate the supporting rod within a certain range, and the protective cylinder can move in the vertical direction through the mounting rod during the rotation of the supporting rod.

[0021] The first support adjusts the angle between the mounting rod and the supporting rod through the connecting rod during the sliding of the sliding seat.

[0022] The rolling ball installed on the lower end of the moving disc slides on the workbench or the workpiece by controlling the nozzle or the protective cylinder to push the device, and the nozzle in the protective cylinder realizes welding on the surface of the workpiece.

[0023] When the rolling ball fails or is damaged, the rotating locking seat is detached from the mounting seat, a new moving disc and mounting seat are replaced, the rotating ball is inserted into the spherical groove, and then the locking seat is installed on the external thread.

[0024] In summary, the present application has a clever structure and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The present application provides a nozzle support device for a plasma arc welding machine for a robot.

[0026] Figure 2 An enlarged view of the structure of the abutment part of the nozzle support device for the plasma arc welding machine for robots according to the present application;

[0027] Figure 3 An enlarged view of the structure of the protection cylinder part of the nozzle support device for the plasma arc welding machine for robots according to the present application;

[0028] Figure 4 An enlarged view of the structure of the mounting rod part of the nozzle support device for the plasma arc welding machine for robots according to the present application;

[0029] Figure 5 An enlarged view of the structure of the mounting seat part of the nozzle support device for the plasma arc welding machine for robots according to the present application.

[0030] In the figure: 1 protection cylinder, 2 vertical groove, 3 moving rod, 4 first spring, 5 second spring, 6 inclined connecting rod, 7 insertion rod, 8 fixed seat, 9 mounting rod, 10 locking stud, 11 limiting groove, 12 first support, 13 sliding seat, 14 support rod, 15 connecting support rod, 16 second support, 17 rotating ball, 18 locking seat, 19 moving disc, 20 mounting seat, 21 abutment, 22 anti-skid seat, 23 T-shaped sliding block, 24 insertion slot, 25 rolling ball, 26 spherical groove, 27 external thread, 28 locking hole. DETAILED DESCRIPTION

[0031] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0032] REFERENCE Figures 1-5The utility model provides a kind of plasma arc welding machine nozzle support device for robot, including protective cylinder 1, multiple vertical grooves 2 are symmetrically opened on the outer side wall of protective cylinder 1, T-shaped slider 23 is slidably connected in each vertical groove 2, first spring 4 is installed on the inner top wall of each vertical groove 2 and the upper surface of T-shaped slider 23, second spring 5 is installed on the inner bottom wall of each vertical groove 2 and the lower surface of T-shaped slider 23, the setting of first spring 4 and second spring 5 can increase the clamping effect of abutment 21 to nozzle, moving rod 3 is fixedly connected on each T-shaped slider 23, multiple plug rods 7 are symmetrically inserted in protective cylinder 1, multiple insertion grooves 24 are symmetrically opened in protective cylinder 1, and each plug rod 7 is located in the insertion groove 24 corresponding position, and the outer surface of plug rod 7 is in contact with the inner wall of insertion groove 24, avoid that plug rod 7 produces wobble in moving process and causes that the fixation to nozzle is not firm, oblique connecting rod 6 is rotatably connected between each moving rod 3 and the plug rod 7 corresponding position, abutment 21 is fixedly connected to the end of each plug rod 7 away from oblique connecting rod 6, multiple antiskid seats 22 are evenly installed on the end surface of each abutment 21 away from plug rod 7, and each antiskid seat 22 is made of rubber, and antiskid seat 22 can increase the friction between abutment 21 and nozzle surface, to ensure the fixation of abutment 21 to nozzle in turn;

[0033] Fixed seat 8 is fixedly connected on the outer side wall of protective cylinder 1, mounting rod 9 is rotatably connected on fixed seat 8, sliding seat 13 is slidably connected on mounting rod 9, limit groove 11 is opened on the both side walls of mounting rod 9, through hole is opened on sliding seat 13, and the outer surface of mounting rod 9 is in contact with the inner wall of through hole, threaded hole is opened on sliding seat 13, and threaded hole is communicated with through hole, locking stud 10 is threadedly connected on threaded hole, and the lower end of locking stud 10 is in abutment with the outer wall of mounting rod 9, limit block is symmetrically installed on the inner side wall of through hole, and each limit block is slidably connected in the limit groove 11 corresponding position, first support 12 is fixedly connected on sliding seat 13, support rod 14 is rotatably connected to the end of mounting rod 9 away from fixed seat 8, second support 16 is fixedly connected on support rod 14, connecting support 15 is rotatably connected between first support 12 and second support 16, moving stabilizing mechanism is installed on the end of support rod 14;

[0034] The mobile stabilizing mechanism comprises a mobile disc 19, the lower end surface of the mobile disc 19 is provided with a plurality of rolling balls 25, the lower surface of the mobile disc 19 is symmetrically provided with a plurality of clamping grooves, the rolling balls 25 are clamped in the clamping grooves, the depth of the clamping grooves is greater than the radius of the rolling balls 25, and the outer surface of the rolling balls 25 is in contact with the inner wall of the clamping grooves, so that the rolling balls 25 are clamped in the clamping grooves without affecting the rolling of the rolling balls 25, and the stability of the rolling balls 25 during rolling is ensured, the upper end surface of the mobile disc 19 is fixedly connected with a mounting seat 20, the mounting seat 20 is provided with a rotating ball 17, and the end, away from the mounting rod 9, of the supporting rod 14 is fixedly installed on the rotating ball 17, the upper surface of the mounting seat 20 is provided with a spherical groove 26, and the rotating ball 17 is located in the spherical groove 26, the inner wall of the spherical groove 26 is in contact with the outer diameter of the rotating ball 17, the depth of the spherical groove 26 is greater than the radius of the rotating ball 17, so that the rotating ball 17 can be clamped in the spherical groove 26, the mounting seat 20 is provided with a locking seat 18, the locking seat 18 can fix the rotating ball 17, so that the rotating ball 17 is clamped in the spherical groove 26, the outer side wall of the mounting seat 20 is provided with an external thread 27, the locking seat 18 is provided with an internal thread, and the internal thread is matched with the external thread 27, the mounting seat 20 is symmetrically provided with a plurality of locking holes 28, and each locking hole 28 is communicated with the spherical groove 26, and the locking hole 28 is arranged to ensure that, when the rotating ball 17 is installed, the rotating ball 17 can drive the mounting seat 20 to slightly deform and drive the rotating ball 17 to be clamped in the spherical groove 26.

[0035] In use, the nozzle is inserted into the protective cylinder 1, the lower end of the nozzle is in abutment with the inner wall of the abutment seat 21, the nozzle is continuously pushed downward, when the nozzle moves downward, the abutment seats 21 move away from each other, the abutment seats 21 slide in the insertion grooves 24 during movement, the abutment seats 21 push the moving rods 3 to move upward through the inclined connecting rods 6 during movement, the T-shaped sliding blocks 23 fixedly connected with the moving rods 3 move upward in the vertical grooves 2, the T-shaped sliding blocks 23 press and compress the first springs 4, and simultaneously stretch and elongate the second springs 5, the elastic force of the first springs 4 and the second springs 5 restored to the original length drives the abutment seats 21 to fix the nozzle in sequence through the moving rods 3, the inclined connecting rods 6 and the insertion rods 7, the lower end of the nozzle is inserted out of the lower end of the protective cylinder 1 until the nozzle is moved to a suitable position, the arrangement of the first springs 4 and the second springs 5 can fix the nozzles with different diameters within a certain range, and the adaptability of the device is improved.

[0036] Before the arc welding machine performs welding, the rotating ball 17 can be rotated, the rotating ball 17 can realize the rotation of the supporting rod 14 within a certain range, and the supporting rod 14 can realize the movement of the protective cylinder 1 in the vertical direction through the mounting rod 9 during rotation, and it is worth noting that the range of the movement of the protective cylinder 1 in the vertical direction is certain, the rotating ball 17 can not only realize the movement of the protective cylinder 1 in the vertical direction, but also realize the adjustment of the distance between the rotating ball moving disc 19 and the protective cylinder 1.

[0037] The mobile sliding seat 13 slides on the installation rod 9, and the limiting block slides in the limiting groove 11 during the sliding of the mobile sliding seat 13. The first support 12 adjusts the angle between the installation rod 9 and the support rod 14 through the connecting support rod 15 during the sliding of the mobile sliding seat 13. When the angle of the support rod 14 is fixed, the installation rod 9 can be rotated relative to the support rod 14 to adjust the distance of the protective cylinder 1. After the height adjustment of the protective cylinder 1 is completed, the locking stud 10 is rotated, and the lower end of the locking stud 10 is abutted against the installation rod 9 to lock the mobile sliding seat 13;

[0038] When welding, the device is pushed by the nozzle or the protective cylinder 1, the rolling ball 25 installed on the lower end surface of the mobile disc 19 slides on the workbench surface or the workpiece, and the nozzle in the protective cylinder 1 realizes welding on the surface of the workpiece.

[0039] It is worth noting that when the rolling ball 25 fails or is damaged, the locking seat 18 is rotated, the locking seat 18 is detached from the mounting seat 20, the new mobile disc 19 and the mounting seat 20 are replaced, the rotating ball 17 is inserted into the spherical groove 26, and then the locking seat 18 is installed on the external thread 27.

[0040] Although the terms such as protective cylinder 1, vertical groove 2, mobile rod 3, first spring 4, second spring 5, inclined connecting rod 6, insertion rod 7, fixed seat 8, installation rod 9, locking stud 10, limiting groove 11, first support 12, mobile sliding seat 13, support rod 14, connecting support rod 15, second support 16, rotating ball 17, locking seat 18, mobile disc 19, mounting seat 20, abutting seat 21, anti-skid seat 22, T-shaped sliding block 23, insertion groove 24, rolling ball 25, spherical groove 26, external thread 27, locking hole 28 are used more in this paper, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the application; any additional limitation is contrary to the spirit of the application.

Claims

1. A nozzle support device for a robot plasma arc welding machine, characterized in that: The device includes a protective cylinder (1), a fixed seat (8) is fixedly connected to the outer wall of the protective cylinder (1), an installation rod (9) is rotatably connected to the fixed seat (8), a sliding seat (13) is slidably connected to the installation rod (9), a first support (12) is fixedly connected to the sliding seat (13), a support rod (14) is rotatably connected to the end of the installation rod (9) away from the fixed seat (8), a second support (16) is fixedly connected to the support rod (14), a connecting support rod (15) is rotatably connected between the first support (12) and the second support (16), and a moving stabilizing mechanism is installed at the end of the support rod (14). The moving stabilizing mechanism includes a moving disk (19), a plurality of rolling balls (25) are mounted on the lower end face of the moving disk (19), a mounting base (20) is fixedly connected to the upper end face of the moving disk (19), a rotating ball (17) is mounted on the mounting base (20), and the end of the support rod (14) away from the mounting rod (9) is fixedly mounted on the rotating ball (17). The outer side wall of the protective cylinder (1) is symmetrically provided with multiple vertical grooves (2), and a T-shaped slider (23) is slidably connected in each vertical groove (2). A first spring (4) is installed on the inner top wall of each vertical groove (2) and the upper surface of the T-shaped slider (23). A moving rod (3) is fixedly connected to each T-shaped slider (23). Multiple insert rods (7) are symmetrically inserted on the protective cylinder (1). Each moving rod (3) is rotatably connected to an inclined connecting rod (6) with the corresponding insert rod (7). A stop (21) is fixedly connected to the end of each insert rod (7) away from the inclined connecting rod (6). The protective cylinder (1) is symmetrically provided with multiple slots (24), and each insert (7) is located in the corresponding slot (24), and the outer surface of the insert (7) is in contact with the inner wall of the slot (24); A second spring (5) is installed on the inner bottom wall of each vertical groove (2) and the lower surface of the T-shaped slider (23); In use, the nozzle is inserted into the protective cylinder, with the lower end of the nozzle abutting against the inner wall of the base. As the nozzle moves downwards, the bases move away from each other, sliding within the slot. The movement of the base pushes the moving rod upwards via the tilting connecting rod, causing the T-shaped slider, fixedly connected to the moving rod, to move upwards within the vertical groove. The T-shaped slider compresses the first spring while simultaneously stretching the second spring. The restoring force of the first and second springs sequentially passes through the moving rod, tilting connecting rod, and insertion rod to fix the nozzle in place. The lower end of the nozzle is then inserted out of the lower end of the protective cylinder until the nozzle is moved to the appropriate position. The first and second springs can fix nozzles of different diameters within a certain range.

2. The nozzle support device for a robot plasma arc welding machine according to claim 1, characterized in that: Each of the abutments (21) has multiple anti-slip seats (22) evenly installed on the end face away from the insert (7), and each anti-slip seat (22) is made of rubber.

3. The nozzle support device for a robot plasma arc welding machine according to claim 1, characterized in that: Limiting grooves (11) are provided on both sides of the mounting rod (9), and through holes are provided on the sliding seat (13). The outer surface of the mounting rod (9) is in contact with the inner wall of the through hole. Limiting blocks are symmetrically installed on the inner side wall of the through hole, and each limiting block is slidably connected in the corresponding limiting groove (11).

4. The nozzle support device for a robot plasma arc welding machine according to claim 1, characterized in that: The upper surface of the mounting base (20) is provided with a spherical groove (26), and the rotating ball (17) is located in the spherical groove (26). A locking seat (18) is installed on the mounting base (20). An external thread (27) is provided on the outer side wall of the mounting base (20). An internal thread is provided on the locking seat (18), and the internal thread and the external thread (27) are engaged.

5. The nozzle support device for a robot plasma arc welding machine according to claim 4, characterized in that: The mounting base (20) is symmetrically provided with multiple locking holes (28), and each locking hole (28) is connected to the spherical groove (26).

6. The nozzle support device for a robot plasma arc welding machine according to claim 4, characterized in that: The inner wall of the spherical groove (26) is in contact with the outer diameter of the rotating ball (17), and the depth of the spherical groove (26) is greater than the radius of the rotating ball (17).

7. The nozzle support device for a robot plasma arc welding machine according to claim 3, characterized in that: The sliding seat (13) has a threaded hole, which is connected to the through hole. A locking stud (10) is threaded onto the threaded hole, and the lower end of the locking stud (10) abuts against the outer wall of the mounting rod (9).

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