Large gantry double-wire robot welding workstation

Abstract

The utility model relates to a large-scale gantry double-wire robot welding workstation, which belongs to the technical field of gantry frames and comprises a track and a gantry frame structure slidably arranged on the track, a guide base capable of sliding along the track is mounted at the bottom of the gantry frame structure, and a base driving device is arranged on the guide base. The base driving device is in contact with the track through a pressure spring; a transverse moving mechanism horizontally slides on an upper cross beam of the gantry frame structure, a lifting ram mechanism moving in the vertical direction of the transverse moving mechanism is arranged on the transverse moving mechanism, and a welding robot is connected to the lifting ram mechanism. The base driving device drives the guide base to move along the track, and the base driving device is tightly attached to the track through the compression spring, so that the situation of large-amplitude shaking caused by poor contact in the moving process is avoided, the influence on the welding robot can be reduced by reducing the shaking amplitude, the situation of wrong welding and missing welding is improved, and the welding quality is improved. The welding quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gantry, and specifically relates to a large gantry double-wire robot welding workstation. Background Art

[0002] With the increasing requirements for welding quality and welding speed, automated welding technology has become the future development trend. Moreover, due to the influence of subjective factors of welders during the welding process, including personal welding proficiency, physical fitness, sense of responsibility, etc., it is impossible to ensure the good welding effect and the smoothness of the welding process.

[0003] Using a robot for welding can free people from extremely harsh working environments. Through reliable welding processes, the welding quality and efficiency can be reliably guaranteed. At the same time, by equipping with fully automatic loading and unloading equipment, a closed cutting space and a dust removal system, a fully automatic robot welding production line is formed, which completely realizes the automation of welding processing, greatly reduces the labor intensity of workers, and also purifies the welding fumes, preventing environmental pollution. Such a production line has significant advantages in terms of quality, efficiency, environmental protection, safety, and reduction of labor intensity.

[0004] Generally, a welding robot is needed for combined welding on a gantry. However, some welding robots on the market currently need to be programmed by programmers before welding operations, which is rather cumbersome. Since the programmed points are fixed, once the gantry shakes, miswelding and missed welding will occur. In short, it is impossible to effectively grind off the redundant parts of the welding nodes, and thus improvements are needed. Summary of the Utility Model

[0005] To solve the problem of miswelding and missed welding caused by the shaking of the gantry during the movement of the welding robot, the utility model provides a large gantry double-wire robot welding workstation.

[0006] The utility model is realized through the following technical solutions:

[0007] A large gantry double-wire robot welding workstation includes a rail and a gantry frame structure slidably arranged on the rail. A guiding base capable of sliding along the rail is installed at the bottom of the gantry frame structure. A base driving device is provided on the guiding base, and the base driving device is in contact with the rail through a compression spring; a transverse moving mechanism slides horizontally on the upper cross beam of the gantry frame structure. An elevating ram mechanism that moves along the vertical direction thereof is provided on the transverse moving mechanism, and a welding robot is connected to the elevating ram mechanism.

[0008] The base driving device drives the guide base to move along the rail. The base driving device is pressed against the rail through a compression spring, thereby avoiding large shaking due to poor contact during movement. It helps to reduce the impact on the welding robot by reducing the shaking amplitude, thereby improving the situation of wrong welding and missed welding and improving the welding quality.

[0009] A further improvement of the utility model is that a through slot is provided on the outer side of the middle part of the guide base to allow the base drive device to be installed, and the base drive device is installed in the through slot through a clamping support, one end of the clamping support is hinged to the guide base outside the through slot, and the other end is provided with the clamping spring. The base drive device arranged in the middle part of the guide base can increase the close coverage area between the guide base and the rail through the base drive device; the clamping support is hinged to the guide base to cooperate with the clamping spring to facilitate the installation of the base drive device on the guide base.

[0010] A further improvement of the utility model is that one end of the compression spring provided on the compression support is provided with a through hole, and a guide rod with a diameter smaller than the through hole and installed on the guide base passes through the through hole, one end of the compression spring is connected to the compression support, and the other end is connected to an end of the guide rod away from the guide base. Under the action of the compression spring, the compression support rotates around the hinge end and moves along the guide rod toward one side of the rail.

[0011] A further improvement of the utility model is that the base driving device includes a first driving motor installed on the middle part of the clamping support, the output end of the first driving motor is connected to a first reducer, the output end of the first reducer is connected to a first gear, and the first gear is meshed with a first rack on the rail. The meshing of the first gear and the first rack helps to improve the accuracy of the movement of the guide base along the rail.

[0012] A further improvement of the utility model is that the two ends of the guide base are also provided with a base guide assembly, the base guide assembly includes a guide wheel bracket installed at the end of the guide base, and the guide wheel bracket is provided with a guide wheel that can move along the vertical length direction of the rail and contact the rail. By adjusting the position of the guide wheel on the guide wheel bracket, it is helpful to adjust the degree of fit between the guide wheel and the rail, thereby reducing the shaking amplitude of the gantry frame structure in the plane perpendicular to the rail during movement.

[0013] A further improvement of the utility model is that a pressing block is slidably mounted on the guide wheel bracket, a supporting roller bearing is rotatably mounted on the pressing block, and the guide wheel is sleeved on the supporting roller bearing; at least two top screws arranged on a horizontal plane and parallel to each other are rotatably mounted on the pressing block, and the top screws are threadedly matched with the flange of the guide wheel bracket. The top screws are adjusted to achieve the movement of the guide wheel driven by the pressing block.

[0014] A further improvement of the present utility model is that a polyurethane buffer is installed on one side of the guide wheel bracket away from the guide base. The polyurethane buffer cooperates with the end of the rail, which helps to reduce the impact force when the guide base moves to the end of the rail.

[0015] A further improvement of the present utility model is that the above-mentioned lateral movement mechanism includes a sliding plate. The back of the sliding plate moves along the first guide rail on the cross beam through the first slider; a third driving motor is also provided on the sliding plate. The output end of the third driving motor is connected with a third speed reducer, and the output end of the third speed reducer is connected with a third gear. The third gear meshes with the third rack on the guide rail of the gantry frame structure. The sliding plate is matched with the first guide rail through the first slider. Under the action of the third driving motor, through the meshing of the third gear and the third rack, while the sliding plate slides along the cross beam, the precision control during the movement is improved.

[0016] A further improvement of the present utility model is that travel switches are respectively arranged at both ends of the moving direction on the sliding plate. The travel switches cooperate with the limit protons on the cross beam to limit the moving track of the sliding plate.

[0017] A further improvement of the present utility model is that the above-mentioned lifting ram mechanism includes a moving ram, a second rack, a second gear, a second driving motor and a second speed reducer. The moving ram is matched with the second slider on the sliding plate through the second guide rail on its back; the second driving motor is installed on the sliding plate. The second driving motor is connected with the second gear through the second speed reducer, and the second rack is installed on the moving ram and meshes with the second gear. The moving ram is matched with the second slider through the second guide rail. Under the action of the second driving motor, by using the meshing cooperation of the second gear and the second rack, while the moving ram slides up and down along the sliding plate, the precision control of the movement is improved.

[0018] As can be seen from the above technical solutions, the beneficial effects of the present utility model are as follows: The base driving device drives the guide base to move along the rail. The base driving device is in close contact with the rail through the compression spring, thus avoiding large-amplitude shaking during the movement due to poor contact, which helps to reduce the impact on the welding robot by reducing the shaking amplitude, thereby improving the situation of wrong welding and missed welding and enhancing the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1This is a schematic structural diagram of the specific embodiment of the present utility model.

[0021] Figure 2 This is a schematic structural diagram of the guiding base of the specific embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the base guiding assembly of the specific embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram of the base driving device of the specific embodiment of the present utility model on the guiding base.

[0024] Figure 5 This is a schematic structural diagram of the lateral moving mechanism of the specific embodiment of the present utility model.

[0025] Figure 6 This is a schematic diagram of the welding robot of the specific embodiment of the present utility model on the lifting ram mechanism.

[0026] In the attached drawings: 1. Gantry frame structure; 2. Rail; 3. Lateral moving mechanism; 4. Lifting ram mechanism; 5. Welding robot; 6. Guiding base; 7. Base guiding assembly; 8. Guide wheel; 9. Saddle; 10. Wire barrel support; 11. Second driving motor; 12. Second speed reducer; 13. Second gear; 14. Moving ram; 16. Compression spring; 17. First driving motor; 18. Compression support; 19. First speed reducer; 20. First gear; 21. Guide wheel support; 22. Support roller bearing; 23. Polyurethane buffer; 24. Compression block; 25. Set screw. Specific embodiment

[0027] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the attached drawings in this specific embodiment. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0028] As shown Figure 1-6 in the figure, a large gantry double-wire robot welding workstation includes a rail 2 embedded in the ground at the lower part and a gantry frame structure 1 slidably disposed on the rail 2. A guiding base 6 capable of sliding along the rail 2 is installed at the bottom of the gantry frame structure 1. A base driving device is provided on the guiding base 6, and the base driving device is in contact with the rail 2 through a compression spring 16;

[0029] A through groove allowing the installation of the base driving device is provided on the outer side of the middle part of the guiding base 6. The base driving device arranged in the middle part of the guiding base 6 can increase the tight covering area between the guiding base 6 and the rail 2 through the base driving device. The base driving device is installed in this through groove through the pressing support 18. One end of the pressing support 18 is hinged to the guiding base 6 outside the through groove, and the other end is provided with the pressing spring 16. The pressing support 18 is hinged to the guiding base 6 to facilitate the installation of the base driving device on the guiding base 6 in cooperation with the pressing spring 16. A through hole is provided at one end of the pressing support 18 where the pressing spring 16 is arranged. A guiding rod with a diameter smaller than the diameter of this through hole and installed on the guiding base 6 penetrates through this through hole. One end of the compression spring is connected to the pressing support 18, and the other end is connected to the end of the guiding rod away from the guiding base 6. Under the action of the pressing spring 16, the pressing support 18 rotates around the hinged end and moves towards the rail 2 side along the guiding rod.

[0030] The base driving device includes a first driving motor 17 installed in the middle part of the pressing support 18. The output end of the first driving motor 17 is connected with a first speed reducer 19. The output end of the first speed reducer 19 is connected with a first gear 20, and this first gear 20 meshes with the first rack on the rail 2. Through the meshing of the first gear 20 and the first rack, it helps to improve the accuracy of the guiding base 6 moving along the rail 2.

[0031] Base guiding assemblies 7 are further provided at both ends of the guiding base 6. The base guiding assembly 7 includes a guiding wheel bracket 21 installed at the end of the guiding base 6. A guiding wheel 8 capable of moving along the length direction perpendicular to the rail 2 and contacting the rail 2 is provided on the guiding wheel bracket 21. A pressing block 24 slides on the guiding wheel bracket 21. A supporting roller bearing 22 is rotatably provided on the pressing block 24, and the guiding wheel 8 is sleeved on the supporting roller bearing 22. At least two jackscrews 25 arranged on the horizontal plane and parallel to each other are rotatably provided on the pressing block 24, and the jackscrews 25 form a threaded fit with the flange of the guiding wheel bracket 21. Adjusting the jackscrews 25 can drive the movement of the guiding wheel 8 through the pressing block 24 to complete the adjustment of the position on the guiding wheel bracket 21, which helps to realize the adjustment of the fitting degree between the guiding wheel 8 and the rail 2, thereby reducing the shaking amplitude of the gantry frame structure 1 in the plane perpendicular to the rail 2 during the movement process.

[0032] A polyurethane buffer 23 is installed on the side of the guiding wheel bracket 21 away from the guiding base 6. The cooperation between the polyurethane buffer 23 and the end of the rail 2 helps to reduce the impact force when the guiding base 6 moves to the end of the rail 2.

[0033] A transverse moving mechanism 3 slides horizontally on the upper cross beam of the gantry frame structure 1. An elevating ram mechanism 4 that moves along the vertical direction thereof is provided on the transverse moving mechanism 3, and a welding robot 5 is connected to the elevating ram mechanism 4. The wire material required during the welding process of the welding robot 5 is stored in a wire barrel, and the wire barrel is fixed to the transverse moving mechanism 3 through a wire barrel mounting bracket, which helps to improve the flexibility of the welding robot 5 and reduce the occupation of external space by the welding robot 5.

[0034] The transverse moving mechanism 3 includes a sliding plate 9. The back surface of the sliding plate 9 moves along a first guide rail on the cross beam through a first slider. A third driving motor is further provided on the sliding plate 9. The output end of the third driving motor is connected to a third speed reducer, and the output end of the third speed reducer is connected to a third gear, and the third gear meshes with a third rack on the guide rail of the gantry frame structure 1. The sliding plate 9 is matched with the first guide rail through the first slider. Under the action of the third driving motor, through the meshing of the third gear and the third rack, while the sliding plate 9 slides along the cross beam, the accuracy during the moving process is improved. Travel switches are respectively provided at both ends of the moving direction on the sliding plate 9, and the travel switches cooperate with the limit protons on the cross beam to limit the moving track of the sliding plate 9.

[0035] The elevating ram mechanism 4 includes a moving ram 14, a second rack, a second gear 13, a second driving motor 11 and a second speed reducer 12. The moving ram 14 is matched with a second slider on the sliding plate 9 through a second guide rail on its back surface. The second driving motor 11 is installed on the sliding plate 9. The second driving motor 11 is connected to the second gear 13 through the second speed reducer 12, and the second rack is installed on the moving ram 14 and meshes with the second gear 13. The moving ram 14 is matched with the second slider through the second guide rail. Under the action of the second driving motor 11, by using the meshing cooperation of the second gear 13 and the second rack, while the moving ram 14 slides up and down along the sliding plate 9, the moving accuracy is improved.

[0036] The base driving device drives the guiding base 6 to move along the track 2. The base driving device is in close contact with the track 2 through a compression spring, thereby avoiding large-amplitude shaking during the moving process due to poor contact, which helps to reduce the influence on the welding robot 5 by reducing the shaking amplitude, thereby improving the situation of wrong welding and missed welding and enhancing the welding quality.

[0037] The working principle of this device: Through the mutual cooperation of the guiding base 6 and the track 2, the sliding plate 9 and the cross beam, and the moving ram 14 and the sliding plate 9, it helps to improve the tightness of the cooperation between adjacent components, thereby reducing the shaking frequency and large amplitude of the welding robot 5 caused during the moving process of the gantry frame structure 1, so as to achieve the improvement of the welding quality.

[0038] A large gantry double-wire robot welding workstation according to the present utility model, a base driving device drives a guiding base to move along a rail, and the base driving device is in close contact with the rail through a compression spring, so as to avoid large-amplitude shaking caused by poor contact during movement, which helps to reduce the influence on the welding robot by reducing the shaking amplitude, thereby improving the situation of wrong welding and missed welding. In addition, the welding gantry can avoid large welding nodes at the welding joint of the two, improving the welding quality.

[0039] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0040] Terms such as "upper", "lower", "outer side", "inner side" in the specification, claims and above-mentioned drawings of the present utility model, if any, are used to distinguish the relative relationship in position and do not need to be qualitatively defined. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A large gantry double-wire robot welding workstation, comprising a rail (2) and a gantry frame structure (1) slidably arranged on the rail (2), characterized in that: A guide base (6) capable of sliding along a rail (2) is installed at the bottom of the gantry frame structure (1); a base driving device is provided on the guide base (6), and the base driving device contacts the rail (2) through a compression spring (16); a lateral moving mechanism (3) slides horizontally on the upper crossbeam of the gantry frame structure (1); a lifting ram mechanism (4) is provided on the lateral moving mechanism (3) that moves along its vertical direction; a welding robot (5) is connected to the lifting ram mechanism (4).

2. A large gantry double-wire robot welding workstation according to claim 1, characterized in that: A through slot for allowing the base drive device to be installed is provided on the outer side of the middle part of the guide base (6), and the base drive device is installed in the through slot via a clamping support (18). One end of the clamping support (18) is hinged to the guide base (6) outside the through slot, and the other end is provided with the clamping spring (16).

3. A large gantry double-wire robot welding workstation according to claim 2, characterized in that: A through hole is formed at one end of a compression spring (16) arranged on the compression support (18), and a guide rod having a diameter smaller than that of the through hole and mounted on the guide base (6) passes through the through hole; one end of the compression spring is connected to the compression support (18), and the other end is connected to an end of the guide rod facing away from the guide base (6).

4. A large gantry double-wire robot welding workstation according to claim 3, characterized in that: The base driving device comprises a first driving motor (17) mounted on the middle part of the clamping support (18); the output end of the first driving motor (17) is connected to a first reducer (19); the output end of the first reducer (19) is connected to a first gear (20); the first gear (20) is meshed with a first rack on the rail (2).

5. A large gantry double-wire robot welding workstation according to any one of claims 1 to 4, characterized in that: Base guide assemblies (7) are also provided at both ends of the guide base (6). The base guide assembly (7) comprises a guide wheel bracket (21) mounted at the end of the guide base (6). The guide wheel bracket (21) is provided with a guide wheel (8) that can move along a length direction perpendicular to the rail (2) and contact the rail (2).

6. A large gantry double-wire robot welding workstation according to claim 5, characterized in that: A pressing block (24) is slidably mounted on the guide wheel bracket (21); a supporting roller bearing (22) is rotatably mounted on the pressing block (24); and the guide wheel (8) is sleeved on the supporting roller bearing (22); at least two top screws (25) are rotatably mounted on the pressing block (24) and are arranged on a horizontal plane and are parallel to each other. The top screws (25) are threadedly matched with the flange of the guide wheel bracket (21).

7. A large gantry double-wire robot welding workstation according to claim 5, characterized in that: A polyurethane buffer (23) is installed on the side of the guide wheel bracket (21) away from the guide base (6).

8. A large gantry double-wire robot welding workstation according to any one of claims 1 to 4, characterized in that: The lateral moving mechanism (3) comprises a slide (9), the back side of which moves along a first guide rail on a crossbeam via a first slider; a third drive motor is also provided on the slide (9), the output end of the third drive motor is connected to a third reducer, the output end of the third reducer is connected to a third gear, and the third gear is meshed with a third rack on the guide rail of the gantry frame structure (1).

9. A large gantry double-wire robot welding workstation according to claim 8, characterized in that: Travel switches are respectively provided at both ends of the moving direction of the slide (9), and the travel switches cooperate with the limit protons on the cross beam to limit the moving track of the slide (9).

10. A large gantry double-wire robot welding workstation according to claim 8, characterized in that: The lifting ram mechanism (4) comprises a moving ram (14), a second rack, a second gear (13), a second drive motor (11) and a second reducer (12); the moving ram (14) cooperates with a second slider on a slide plate (9) via a second guide rail on its back side; the second drive motor (11) is mounted on the slide plate (9); the second drive motor (11) is connected to the second gear (13) via the second reducer (12); the second rack is mounted on the moving ram (14) and meshes with the second gear (13).

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