Adjustable working frame for welding torch

Abstract

The utility model relates to the technical field of welding torches, in particular to an adjustable working frame for a welding torch, which is used for installing a mechanical arm, the welding torch is installed on the mechanical arm, a fixing frame is arranged below the mechanical arm, the adjustable working frame comprises a base, rails are symmetrically arranged on the base, a plurality of sliding blocks are arranged on the rails in a sliding mode, and the sliding blocks are arranged on the base. The sliding blocks are connected to the rails in a matched mode, the fixing frame is installed on the sliding blocks, the number of the sliding blocks on one rail is the same as that of the sliding blocks on the other rail, the sliding blocks on the rail and the sliding blocks on the other rail are symmetrical, a driving block is arranged on the base in a sliding mode, the driving block abuts against the fixing frame, and a guardrail is further arranged on the base. The guardrails are arranged around the three faces of the circumference of the mechanical arm, and a welding torch on the mechanical arm extends out of the guardrails. The mechanical arm is arranged on the base in a sliding mode, the welding range of the welding torch on the mechanical arm is adjusted and controlled, and the accuracy of large-range movement of the welding torch is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to torch technical field, especially a kind of adjustable work stand for welding torch. BACKGROUND

[0002] Welding torch, also known as welding gun, is one of the main equipment of hot air welding. It is composed of heating elements, nozzles and other components. According to its structure, it is divided into gas welding gun, electric welding gun and rapid welding gun, and automatic welding gun. Because the process of welding processing will produce high temperature and high heat and release various harmful gases, robots are used to replace manual welding on factory assembly lines. Welding robot is an automatic welding equipment, usually composed of mechanical arm, welding gun (torch), control system and sensing device, etc. The mechanical arm is the core component of the welding robot, with multiple rotatable and telescopic joints, which can process around each angle of the workpiece. However, since the activity angle and range of the mechanical arm are limited within a fixed range, when the size of the workpiece changes significantly or another workpiece to be processed is replaced, manual movement of the main position of the welding robot is required to ensure that the mechanical arm of the welding robot has better processing range for the workpiece to adapt to more processing sites. For example, Chinese patent document CN202121991521.X discloses an adjustable welding gun support and welding device, which includes a mounting seat, a fixed connecting rod, an adjusting connecting rod and a welding gun support. The fixed connecting rod is fixedly connected with the mounting seat. The adjusting connecting rod is telescopic along the length direction of the fixed connecting rod. The welding gun support moves with the adjusting connecting rod. The mounting seat rotates around the shaft and drives the fixed connecting rod, the adjusting connecting rod and the welding gun support to rotate, so that the welding gun head fixed on the welding gun support rotates coaxially with the mounting seat. The extension direction of the fixed connecting rod is not parallel to the axis of the mounting seat. The above-mentioned patent ensures that the welding pipe is always in the middle of the processing range of the welding gun by adjusting the relative position between the adjustable welding gun support and the welding pipe, ensuring the best processing range and preventing the welding pipe from being unable to be processed. However, it can only be applied to welding pipes with small diameter changes. For large diameter welding pipes or another type of processing workpiece, the large welding gun support is prone to unstable installation, affecting the processing quality. The operation is complicated and affects the processing efficiency.

[0003] Therefore, it is necessary for those skilled in the art to provide an adjustable work stand for welding torch, which can adjust the relative position between the welding torch and the workpiece according to the size adaptability of the workpiece on the assembly line, ensure that the workpiece is always within the processing range of the mechanical arm, and further ensure the processing stability and efficiency. SUMMARY

[0004] The purpose of the utility model is to provide an adjustable work stand for a welding torch, so as to solve the technical problem in the prior art that the movable angle and range of a robotic arm with a welding torch are limited to a fixed range, and when the size of the workpiece changes significantly or another workpiece to be processed is replaced, the processing range is restricted, the machinable area is reduced, and the processing efficiency is affected.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an adjustable work frame for a welding torch, which is used to install a robotic arm, a welding torch is installed on the robotic arm, a fixed frame is provided under the robotic arm, the adjustable work frame includes a base, rails are symmetrically provided on the base, a plurality of sliders are slidably provided on the rails, the sliders are cooperatively connected to the rails, the fixed frame is installed on the sliders, the number of sliders on one rail and the sliders on the other rail are the same and symmetrical to each other, a driving block is slidably provided on the base, the driving block pushes against the fixed frame, and a guardrail is also provided on the base, the guardrail is arranged around three circumferential surfaces of the robotic arm, and the welding torch on the robotic arm extends out of the guardrail.

[0006] Furthermore, an opening is provided on the base between the two rails, and the opening passes through the wall of the base; a matching hole is provided on the surface of the fixing frame facing the base, and the matching hole is opened inward from the bottom surface of the fixing frame. The matching hole is located in the middle of the fixing frame and faces the opening.

[0007] Furthermore, the driving block includes a mating portion and a driving portion, the diameter of the mating portion is smaller than the diameter of the driving portion, the driving portion is located below the bottom surface of the base, the mating portion passes through the opening and extends upward, and the mating portion is matingly connected to the mating hole and abuts the side wall of the mating hole.

[0008] Furthermore, a driving shaft and a limiting shaft are provided on the bottom surface of the base, wherein the driving shaft is a screw rod and the limiting shaft is a polished rod. The driving shaft passes through the driving portion on the driving block and is rotatably arranged below the base, and the limiting shaft passes through the driving portion on the driving block and is fixedly arranged below the base. The driving shaft and the driving block are threadedly connected.

[0009] Furthermore, a motor is provided on the base, and an output shaft of the motor is fixedly connected to a drive shaft.

[0010] Furthermore, a contact pad is provided on the end face of the mating part of the driving block, and the contact pad is made of rubber. Part of the contact pad is sleeved on the end face of the mating part, and the other part of the contact pad extends to the circumferential surface of the mating part. The contact pad is fitted and connected to the mating hole.

[0011] Further, the fixed frame is in square plate structure, and the fixed frame is provided with a mounting hole penetrating through the wall of the fixed frame, and a bolt is threadedly connected in the mounting hole.

[0012] Further, the track is in I-shaped structure, the sliding block is provided with an I-shaped groove, and the sliding block is connected to the track through the I-shaped groove, and the sliding block is further provided with a roller in the I-shaped groove.

[0013] Further, the guardrail is made of aluminum alloy, and the guardrail is in frame structure and provided with transparent glass.

[0014] The welding torch adjusting work frame has the advantages that the welding torch is slidably arranged on the base, the welding range of the welding torch on the mechanical arm is adjusted and controlled, the fixed frame is slid along the extension direction of the track, the accuracy of the large-range movement of the welding torch is ensured, when the workpiece on the assembly line changes, the fixed frame is moved to quickly change the welding position of the welding torch, the welding torch is adapted to different sizes of workpieces, the welding torch is moved away from the assembly line for maintenance, and the safety performance of the welding torch adjusting work frame is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the welding torch adjusting work frame.

[0016] Figure 2 is a top view of the welding torch adjusting work frame.

[0017] Figure 3 is an exploded view of the welding torch adjusting work frame.

[0018] Figure 4 is Figure 2 is a sectional view along A-A.

[0019] Figure 5 is Figure 4 is a local enlarged schematic view of the A part.

[0020] The components in the drawings are marked as follows: 10, mechanical arm; 11, welding torch; 12, fixed frame; 13, matching hole; 20, base; 21, track; 22, sliding block; 23, opening; 24, driving block; 241, matching part; 242, driving part; 25, driving shaft; 26, limiting shaft; 27, guardrail. DETAILED DESCRIPTION

[0021] The utility model will be described in detail in connection with the drawings. The drawing is a simplified schematic diagram, and only the basic structure of the utility model is schematically shown, so it only shows the structure related to the utility model.

[0022] Please refer to Figure 1 、 Figure 2 The utility model provides a adjustable work stand for welding torch, for installing mechanical arm 10, mechanical arm 10 is installed with welding torch 11, the lower portion of mechanical arm 10 is equipped with fixed frame 12. The mechanical arm 10 is the common six-axis welding robot on the market, and the specific structure is not described here.

[0023] The adjustable work stand includes base 20, and the base 20 is square plate structure, and the base 20 is symmetrically equipped with track 21, and a plurality of sliding blocks 22 are slidably arranged on the track 21, and the sliding block 22 is connected on the track 21, and the fixed frame 12 is installed on the sliding block 22, and the number of the sliding block 22 on one track 21 and the sliding block 22 on another track 21 is same and mutually symmetrical, so as to ensure the stability of the fixed frame 12 installation.

[0024] In the embodiment, the fixed frame 12 is square plate structure, and the fixed frame 12 is equipped with mounting hole, and the mounting hole penetrates the wall of the fixed frame 12, and the bolt is screw-connected in the mounting hole, and the bolt passes through the mounting hole and is screw-connected on the fixed frame 12, so as to realize the stable installation of the fixed frame 12 on the plurality of sliding blocks 22.

[0025] In the embodiment, the track 21 is I-shaped, and the sliding block 22 is provided with I-shaped groove, and the sliding block 22 is connected to the track 21 through the I-shaped groove, so as to ensure the stability of the sliding block 22 movement, prevent the sliding block 22 from falling out, and the roller is further arranged in the I-shaped groove on the sliding block 22, so as to reduce the friction between the track 21 and the sliding block 22, improve the smoothness of movement and the stability of use.

[0026] In use, the fixed frame 12 slides along the extension direction of the track 12 with the sliding block 22, so that the mechanical arm 10 on the fixed frame 12 moves together, realizes the large range movement of the welding torch 11, and the welding torch 11 faces the assembly line during the working process, when the workpiece on the assembly line changes, the fixed frame 12 can be moved to quickly change the welding position of the welding torch 11, so as to adapt to different sizes of workpieces, and the quick movement of the mechanical arm 10 as a whole can also make the welding torch 11 away from the assembly line, which is convenient for maintenance.

[0027] Furthermore, a guardrail 27 is provided on the base 20, and the guardrail 27 is arranged around the three circumferences of the robotic arm 10. The welding torch 11 on the robotic arm 10 extends out of the guardrail 27. The guardrail 27 is made of aluminum alloy and has a frame structure. Transparent glass is provided on the guardrail 27 to ensure observation and prevent workers from entering by mistake, thereby improving production safety.

[0028] Further, see Figure 3 、 Figure 4 、 Figure 5 An opening 23 is provided on the base 20 between the two rails 21, and the opening 23 passes through the wall of the base 20; a matching hole 13 is provided on the surface of the fixing frame 12 facing the base 20, and the matching hole 13 is opened inward from the bottom surface of the fixing frame 12. The matching hole 13 is located in the middle of the fixing frame 12 and faces the opening 23.

[0029] A driving block 24 is slidably provided on the base 20, and the driving block 24 includes a matching portion 241 and a driving portion 242. The diameter of the matching portion 241 is smaller than the diameter of the driving portion 242. The driving portion 242 is located below the bottom surface of the base 20. The matching portion 241 passes through the opening 23 and extends upward. The matching portion 241 is matched and connected to the matching hole 13 and abuts the side wall of the matching hole 13.

[0030] During use, the driving portion 242 is pushed to cause the matching portion 241 to push the fixing frame 12 to move, thereby achieving power output.

[0031] In this embodiment, a driving shaft 25 and a limiting shaft 26 are provided on the bottom surface of the base 20. The driving shaft 25 is a screw rod, and the limiting shaft 26 is a smooth rod. The driving shaft 25 passes through the driving portion 242 on the driving block 24 and is rotatably arranged below the base 20. The limiting shaft 26 passes through the driving portion 242 on the driving block 24 and is fixedly arranged below the base 20. The driving shaft 25 is threadedly connected to the driving block 24. A motor (not shown in the figure) is also provided on the base 20. The output shaft of the motor is fixedly connected to the driving shaft 25, so that the driving shaft 25 can be controlled to rotate forward and reverse by the rotation of the motor, so that the driving block 24 can move back and forth along the axis of the limiting shaft 26.

[0032] In another embodiment, a telescopic cylinder is provided on the base 20, and the telescopic cylinder includes but is not limited to a hydraulic cylinder. The telescopic rod on the telescopic cylinder is fixedly connected to the side of the driving part 242 on the driving block 24, thereby realizing the control of the reciprocating movement of the driving block 24.

[0033] In the embodiment, the driving block 24 is provided with an abutting pad (not shown in the figure) on the end surface of the fitting part 241, the abutting pad is made of rubber, a part of the abutting pad is sleeved on the end surface of the fitting part 241, and the other part of the abutting pad extends to the circumferential surface of the fitting part 241, the abutting pad is connected to the fitting hole 13, so that the stability of the abutment is ensured, and wear is prevented.

[0034] The specific operation mode of the utility model is: the mechanical arm 10 is installed on the sliding block 22, the driving shaft 25 is driven to rotate, the mechanical arm 10 is made to slide along the track 21, and then the welding range of the welding torch 11 on the mechanical arm 10 is regulated.

[0035] The utility model discloses a mechanical arm 10 is slidably arranged on the base 20, realizes the regulation and control to the welding range of the welding torch 11 on the mechanical arm 10, utilizes the fixed frame 12 to follow the sliding block 22 and slides along the extension direction of track 12, guarantees the accuracy of the wide range movement of welding torch 11, because welding torch 11 is directly opposite the assembly line in the working process, when the workpiece on the assembly line changes, the fixed frame 12 can be moved, the welding position of welding torch 11 is changed quickly, and then the workpiece of different sizes is adapted, and the quick movement of the mechanical arm 10 as a whole can also make welding torch 11 away from the assembly line, is convenient for maintenance, and the safety performance of the utility model is improved.

[0036] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. An adjustable work stand for a welding torch, used for mounting a robotic arm (10), a welding torch (11) being mounted on the robotic arm (10), and a fixing stand (12) being provided below the robotic arm (10), characterized in that: The adjustable work frame includes a base (20), a track (21) is symmetrically provided on the base (20), a plurality of sliders (22) are slidably provided on the track (21), the sliders (22) are cooperatively connected to the track (21), the fixed frame (12) is mounted on the sliders (22), the number of the sliders (22) on one track (21) and the sliders (22) on the other track (21) are the same and symmetrical to each other, a driving block (24) is slidably provided on the base (20), the driving block (24) pushes against the fixed frame (12), and a guardrail (27) is further provided on the base (20), the guardrail (27) is arranged around three circumferential surfaces of the robot arm (10), and the welding torch (11) on the robot arm (10) extends out of the guardrail (27).

2. The adjustable work stand for a welding torch according to claim 1, characterized in that: The base (20) is provided with an opening (23) between the two rails (21), and the opening (23) passes through the wall of the base (20); the fixing frame (12) is provided with a matching hole (13) on the surface facing the base (20), and the matching hole (13) is opened inward from the bottom surface of the fixing frame (12), and the matching hole (13) is located in the middle of the fixing frame (12) and directly faces the opening (23).

3. The adjustable work stand for a welding torch according to claim 2, characterized in that: The driving block (24) comprises a matching portion (241) and a driving portion (242). The diameter of the matching portion (241) is smaller than the diameter of the driving portion (242). The driving portion (242) is located below the bottom surface of the base (20). The matching portion (241) passes through the opening (23) and extends upward. The matching portion (241) is matched and connected to the matching hole (13) and abuts against the side wall of the matching hole (13).

4. The adjustable work stand for a welding torch according to claim 3, characterized in that: A driving shaft (25) and a limiting shaft (26) are provided on the bottom surface of the base (20), wherein the driving shaft (25) is a screw rod and the limiting shaft (26) is a smooth rod. The driving shaft (25) passes through the driving portion (242) on the driving block (24) and is rotatably arranged below the base (20), and the limiting shaft (26) passes through the driving portion (242) on the driving block (24) and is fixedly arranged below the base (20), and the driving shaft (25) and the driving block (24) are threadedly connected.

5. The adjustable work stand for a welding torch according to claim 4, characterized in that: A motor is also provided on the base (20), and an output shaft of the motor is fixedly connected to the drive shaft (25).

6. The adjustable work stand for a welding torch according to claim 3, characterized in that: The driving block (24) is provided with a contact pad on the end surface of the matching portion (241), the contact pad being made of rubber, a portion of the contact pad being sleeved on the end surface of the matching portion (241), and another portion of the contact pad extending to the circumferential surface of the matching portion (241), the contact pad being connected to the matching hole (13).

7. The adjustable work stand for a welding torch according to claim 1, characterized in that: The fixing frame (12) is in a square plate-like structure. A mounting hole is provided on the fixing frame (12). The mounting hole passes through the wall of the fixing frame (12). A bolt is threadedly connected in the mounting hole. The bolt passes through the mounting hole and is threadedly connected to the fixing frame (12).

8. The adjustable work stand for a welding torch according to claim 1, wherein: The track (21) is in an I-shaped shape, an I-shaped groove is provided on the slider (22), the slider (22) is connected to the track (21) through the I-shaped groove, and a roller is provided on the slider (22) in the I-shaped groove. The roller is rotatably provided on the slider (22), and the outer surface of the roller abuts the track (21).

9. The adjustable work stand for a welding torch according to claim 1, wherein: The guardrail (27) is made of aluminum alloy, has a frame structure, and is provided with transparent glass.

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