CN219113254U - Angle adjusting mechanism of welding robot - Google Patents

Abstract

The utility model relates to the technical field of welding robots, in particular to an angle adjusting mechanism of a welding robot, which comprises a base, wherein a sliding component is fixedly connected to the top of the base, a first sliding block is connected to the sliding component in a transmission way, the bottom of the first sliding block is in sliding connection with the top of the base, the top of the first sliding block is fixedly connected with the bottom of a first rotating mechanism, the top of the first rotating mechanism is fixedly connected with the bottom of a first mechanical arm, the side wall of the upper part of the first mechanical arm is fixedly connected with one side of a second rotating mechanism, the other side of the second rotating mechanism is fixedly connected with a second mechanical arm, the side wall of one end of the second mechanical arm is fixedly connected with a third rotating mechanism, and the other side of the third rotating mechanism is fixedly connected with a welding mechanism. The utility model can achieve the purpose of improving the rotation precision and the rotation speed of the angle adjusting mechanism.

Description

Angle adjusting mechanism of welding robot

Technical Field

The utility model relates to the technical field of welding robots, in particular to an angle adjusting mechanism of a welding robot.

Background

The welding robot is an industrial robot engaged in welding, and is a re-programmable, automatically controlled manipulator having three or more programmable axes for automating the welding process.

The conventional welding robot angle adjusting mechanism generally uses a turntable bearing as an angle adjusting device, but the turntable bearing is connected with a driving mechanism through meshing, so that the angle adjusting precision is limited by the number of gear teeth, and the transmission efficiency of the welding robot angle adjusting mechanism adopting belt transmission is lower, so that the speed of the welding robot is slower when the angle is changed, the working efficiency is low, and therefore, the problem of the angle adjusting mechanism of the welding robot is needed to be solved.

Disclosure of Invention

The utility model aims to provide an angle adjusting mechanism of a welding robot, so as to solve the problems and achieve the aim of improving the rotation precision and the rotation speed of the angle adjusting mechanism.

In order to achieve the above object, the present utility model provides the following solutions:

the angle adjusting mechanism of the welding robot comprises a base, wherein a sliding assembly is fixedly connected to the top of the base, a first sliding block is connected to the sliding assembly in a transmission manner, the bottom of the first sliding block is in sliding connection with the top of the base, a first rotating mechanism bottom is fixedly connected to the top of the first sliding block, a first mechanical arm bottom is fixedly connected to the top of the first rotating mechanism, a second rotating mechanism is fixedly connected to one side of the side wall of the upper part of the first mechanical arm, a second mechanical arm is fixedly connected to the other side of the second rotating mechanism, the second rotating mechanism is fixedly connected to one side wall of one end of the second mechanical arm, a third rotating mechanism is fixedly connected to the end of the other end of the second mechanical arm, and a welding mechanism is fixedly connected to the other side of the third rotating mechanism;

the first rotating mechanism comprises a first mounting plate, one side of the first mounting plate is rotationally connected with one end of a driving speed changing part, the other end of the driving speed changing part is rotationally connected with a second mounting plate, the first mounting plate is symmetrically arranged with the second mounting plate, the first mounting plate is fixedly connected with the second mounting plate through a plurality of first brackets, the driving speed changing part is in transmission connection with a driven speed changing part through a synchronous belt, the driven speed changing part is located between the first mounting plate and the second mounting plate, two ends of the driven speed changing part are respectively in rotation connection with the first mounting plate and the second mounting plate, the driven speed changing part is in transmission connection with a turntable, the driving speed changing part is in transmission connection with a first driving part, the first driving part is fixedly connected with the first mounting plate, and the second rotating mechanism and the third rotating mechanism are identical to the first rotating mechanism in structure.

Preferably, the driving speed changing part comprises a driving shaft, two ends of the driving shaft are respectively connected with the first mounting plate and the second mounting plate in a rotating way, a second cone pulley is sleeved on the driving shaft, the second cone pulley is in sliding connection with the driving shaft, a first cone pulley is sleeved on the driving shaft, the first cone pulley is fixedly connected with the driving shaft, the first cone pulley and the conical surface of the second cone pulley are oppositely arranged, the synchronous belt is positioned between the first cone pulley and the second cone pulley, and the first cone pulley and the second cone pulley are in friction contact with the side surface of the synchronous belt; the second cone pulley rim portion joint has the plectrum, the plectrum inner wall with second cone pulley rim portion sliding connection, the plectrum rigid coupling has lifting unit, lifting unit with first mounting panel rigid coupling.

Preferably, the driven speed change part comprises a driven shaft, two ends of the driven shaft are respectively connected with the first mounting plate and the second mounting plate in a rotating way, a fourth cone pulley is sleeved on the driven shaft, the fourth cone pulley is fixedly connected with the driven shaft, a third cone pulley is sleeved on the driven shaft, the third cone pulley is in sliding connection with the driven shaft, the third cone pulley and the conical surface of the fourth cone pulley are oppositely arranged, a spring is arranged between the bottom of the third cone pulley and the second mounting plate, one end of the spring is in contact with the third cone pulley, the other end of the spring is in contact with the second mounting plate, the driven shaft is fixedly connected with the turntable, and the third cone pulley and the fourth cone pulley are in contact with the side wall of the synchronous belt.

Preferably, the lifting part comprises a lifting cylinder, a first mounting block is fixedly connected to the moving end of the lifting cylinder, a second mounting block is fixedly connected to the side wall of the first mounting block, a plurality of sliding rods are fixedly connected to one end of the second mounting block, the sliding rods are symmetrically arranged, and the sliding rods penetrate through the first mounting plate and are fixedly connected with the shifting plate.

Preferably, the sliding component comprises two first baffles, two first baffle bottoms with base top rigid coupling, two first baffle symmetry sets up, two rotate between the first baffle and be connected with the threaded rod, the threaded rod runs through first slider middle part, the threaded rod with first slider threaded connection, the threaded rod transmission is connected with second drive division, the sliding component still includes two card strips, two card strips with base top rigid coupling, card strip with first baffle space vertical setting, two first baffle is located two between the card strip, card strip lateral wall with first slider lateral wall sliding connection.

Preferably, the first driving part comprises a first driving motor, the side wall of the first driving motor is fixedly connected with the first mounting plate, and the output shaft of the first driving motor penetrates through the first mounting plate and is fixedly connected with the driving shaft.

Preferably, the second driving part comprises a second driving motor, the side wall of the second driving motor is fixedly connected with any side wall of the first baffle, and the output shaft of the second driving motor penetrates through the first baffle to be fixedly connected with the threaded rod.

Preferably, the clamping strip is of a right trapezoid structure, one side of the short side of the clamping strip is fixedly connected with the top of the base, and one side of the bevel edge of the clamping strip is in sliding connection with the side wall of the first sliding block.

The utility model has the following technical effects: during the use, through the slip subassembly of base top rigid coupling, slip subassembly and first slider transmission are connected, first slider and base top slip setting, make first slider can be at base top lateral shifting under the slip subassembly drive, first slider top and first slewing mechanism's second mounting panel bottom rigid coupling, first slewing mechanism's first mounting panel top and first arm bottom rigid coupling, first arm upper portion lateral wall and second slewing mechanism's second mounting panel one side rigid coupling, first arm one side and second arm one end lateral wall rigid coupling are kept away from to second slewing mechanism's first mounting panel, second arm other end tip and third slewing mechanism's first mounting panel rigid coupling, third slewing mechanism's second mounting panel is kept away from second arm one side and welding mechanism rigid coupling, make the whole horizontal direction rotation of realization of device through first slewing mechanism, drive the second arm and rotate in vertical plane through third slewing mechanism, realize the rotation of welding mechanism through three slewing mechanism, slip subassembly and arm are mutually supporting, realize the whole in space a plurality of direction adjustment of device, make the whole have higher degree of freedom.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a first rotation mechanism according to the present utility model;

FIG. 3 is a cross-sectional view of a first rotation mechanism according to the present utility model;

FIG. 4 is a schematic diagram of a pulling plate according to the present utility model;

FIG. 5 is a schematic structural diagram of embodiment 2 of the present utility model;

FIG. 6 is a schematic diagram of a welding mechanism according to embodiment 2 of the present utility model;

FIG. 7 is a schematic diagram of a curved chute according to embodiment 2 of the present utility model;

1, a base; 2. clamping strips; 3. a first slider; 4. a first baffle; 5. a second drive motor; 6. a threaded rod; 7. a first mechanical arm; 8. a first rotation mechanism; 9. a second rotation mechanism; 10. a second mechanical arm; 11. a third rotation mechanism; 12. a welding mechanism; 801. a turntable; 802. a first drive motor; 803. a second mounting block; 804. a slide bar; 805. a lifting cylinder; 806. a first mounting block; 807. a first mounting plate; 808. a first bracket; 809. a second mounting plate; 810. a first cone pulley; 811. a second cone pulley; 812. a third cone pulley; 813. a fourth cone pulley; 814. a spring; 815. a synchronous belt; 816. a pulling piece; 817. a driving shaft; 818. a driven shaft; 1201. a welding tip; 1202. a third mounting plate; 1203. a second bracket; 1204. a fourth mounting plate; 1205. a rotating shaft; 1206. a connecting block; 1207. a connecting rod; 1208. a curved chute; 1209. a motor mounting plate; 1210. and a third driving motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1-4, the embodiment provides an angle adjusting mechanism of a welding robot, which comprises a base 1, wherein a sliding component is fixedly connected to the top of the base 1, a first sliding block 3 is connected to the sliding component in a transmission manner, the bottom of the first sliding block 3 is slidably connected with the top of the base 1, a first rotating mechanism 8 is fixedly connected to the top of the first sliding block 3, a first mechanical arm 7 is fixedly connected to the top of the first rotating mechanism 8, one side of a second rotating mechanism 9 is fixedly connected to the side wall of the upper part of the first mechanical arm 7, a second mechanical arm 10 is fixedly connected to the other side of the second rotating mechanism 9, one side of a third rotating mechanism 11 is fixedly connected to the side wall of one end of the second mechanical arm 10, and a welding mechanism 12 is fixedly connected to the other side of the third rotating mechanism 11;

the first rotating mechanism 8 comprises a first mounting plate 807, one side of the first mounting plate 807 is rotationally connected with one end of a driving speed changing part, the other end of the driving speed changing part is rotationally connected with a second mounting plate 809, the first mounting plate 807 and the second mounting plate 809 are symmetrically arranged, the first mounting plate 807 and the second mounting plate 809 are fixedly connected through a plurality of first brackets 808, the driving speed changing part is in transmission connection with a driven speed changing part through a synchronous belt 815, the driven speed changing part is positioned between the first mounting plate 807 and the second mounting plate 809, two ends of the driven speed changing part are respectively in rotational connection with the first mounting plate 807 and the second mounting plate 809, the driven speed changing part is in transmission connection with a turntable 801, the driving speed changing part is in transmission connection with a first driving part, the first driving part is fixedly connected with the first mounting plate 807, and the second rotating mechanism 9 and the third rotating mechanism 11 are identical in structure with the first rotating mechanism 8.

When the welding device is used, the sliding assembly fixedly connected with the top of the base 1 is in transmission connection with the first sliding block 3, the first sliding block 3 is slidably arranged on the top of the base 1, so that the first sliding block 3 can transversely move at the top of the base 1 under the driving of the sliding assembly, the top of the first sliding block 3 is fixedly connected with the bottom of a second mounting plate 809 of a first rotating mechanism 8, the top of the first mounting plate 807 of the first rotating mechanism 8 is fixedly connected with the bottom of a first mechanical arm 7, the side wall of the upper part of the first mechanical arm 7 is fixedly connected with one side of a second mounting plate 809 of a second rotating mechanism 9, the side of the first mounting plate 807 of the second rotating mechanism 9 is far away from the first mechanical arm 7 and is fixedly connected with one side wall of one end of a second mechanical arm 10, the other end of the second mechanical arm 10 is fixedly connected with the first mounting plate 807 of a third rotating mechanism 11, one side of the second mounting plate 809 of the third rotating mechanism 11 is far away from the second mechanical arm 10 and is fixedly connected with a welding mechanism 12, the whole device is enabled to rotate in the horizontal direction through the first rotating mechanism 8, the second rotating mechanism 9 drives the second mechanical arm 10 to rotate in the vertical plane, the whole device is enabled to rotate in the whole through the third rotating mechanism 11, the whole rotating mechanism 12 is enabled to rotate in the whole welding mechanism through the third rotating mechanism 11, the whole rotating mechanism is enabled to rotate in the whole rotating mechanism, the whole rotating mechanism and the whole rotating mechanism has a plurality of free degree in the whole and free space through the sliding mechanism and the whole device;

the second rotating mechanism 9 and the third rotating mechanism 11 are identical to the first rotating mechanism 8 in structure, and the first rotating mechanism 8 is taken as an example for explanation;

the first rotating mechanism 8 comprises a first mounting plate 807 and a second mounting plate 809, the first mounting plate 807 and the second mounting plate 809 are symmetrically arranged, the first mounting plate 807 and the second mounting plate 809 are fixedly connected through a plurality of first brackets 808, so that the first mounting plate 807, the second mounting plate 809 and the plurality of first brackets 808 form a firm whole, the number of the first brackets 808 is preferably four, the four first brackets 808 are distributed along the four corners of the first mounting plate 807, guard plates can be arranged between two adjacent first brackets 808, and the mounting frames formed by the first mounting plate 807, the second mounting plate 809 and the plurality of first brackets 808 are completely sealed to prevent dust from entering; the first mounting plate 807 and the second mounting plate 809 are provided with a driving speed changing part, the first mounting plate 807 and the second mounting plate 809 are respectively connected with two ends of the driving speed changing part in a rotating way, the driving speed changing part is in transmission connection with the first driving part, the driving speed changing part is driven to rotate through the first driving part, a driven speed changing part is further arranged between the first mounting plate 807 and the second mounting plate 809, the driving speed changing part and the driven speed changing part are symmetrically arranged, the driving speed changing part and the driven speed changing part are in transmission connection through a synchronous belt 815, when the driving speed changing part rotates, the driven speed changing part also rotates along with the driving speed changing part, the synchronous belt 815 is preferably a steel triangular belt with a certain thickness, two ends of the driven speed changing part are respectively connected with the first mounting plate 807 and the second mounting plate 809 in a rotating way, the driven speed changing part is also in transmission connection with the turntable 801, the turntable 801 is arranged on the outer side of the first mounting plate 807, the center of the turntable 801 is fixedly connected with an output shaft of the driven speed changing part, when the first driving part drives the driving speed changing part to rotate through the synchronous belt 815, the driven speed changing part rotates through the synchronous belt 801, the turntable 801 is further rotated through the synchronous belt 815, the output speed of the first speed changing part, the turntable 801 is further, the output speed of the turntable is not required to be meshed with the first turntable 801, the turntable is further, the precision is improved, and the precision is further, the precision of the turntable is improved, and the mechanical precision is not required to be improved, and the speed is further, the speed is improved.

In a further optimized scheme, the driving speed changing part comprises a driving shaft 817, two ends of the driving shaft 817 are respectively and rotatably connected with a first mounting plate 807 and a second mounting plate 809, a second cone pulley 811 is sleeved on the driving shaft 817, the second cone pulley 811 is in sliding connection with the driving shaft 817, a first cone pulley 810 is sleeved on the driving shaft 817, the first cone pulley 810 is fixedly connected with the driving shaft 817, the conical surfaces of the first cone pulley 810 and the second cone pulley 811 are oppositely arranged, a synchronous belt 815 is positioned between the first cone pulley 810 and the second cone pulley 811, and the first cone pulley 810 and the second cone pulley 811 are in frictional contact with the side surfaces of the synchronous belt 815; the side part of the second cone pulley 811 is clamped with a poking plate 816, the inner wall of the poking plate 816 is connected with the side part of the second cone pulley 811 in a sliding way, the poking plate 816 is fixedly connected with a lifting part, and the lifting part is fixedly connected with the first mounting plate 807.

Further optimized scheme, driven variable speed portion includes driven shaft 818, driven shaft 818 both ends respectively with first mounting panel 807 and second mounting panel 809 rotate to be connected, the cover is equipped with fourth cone pulley 813 on the driven shaft 818, fourth cone pulley 813 and driven shaft 818 fixed connection, still the cover is equipped with third cone pulley 812 on the driven shaft 818, third cone pulley 812 and driven shaft 818 sliding connection, third cone pulley 812 and fourth cone pulley 813 conical surface set up relatively, be equipped with spring 814 between third cone pulley 812 bottom and the second mounting panel 809, spring 814 one end and third cone pulley 812 contact, the spring 814 other end and second mounting panel 809 contact, driven shaft 818 and carousel 801 rigid coupling, third cone pulley 812 and fourth cone pulley 813 contact with the hold-in range 815 lateral wall.

The first cone pulley 810, the second cone pulley 811, the third cone pulley 812 and the fourth cone pulley 813 have the same structure, and taking the first cone pulley 810 as an example, a flat ring is circumferentially sleeved at the bottom of the first cone pulley 810, and the inner wall of the ring is fixedly connected with the side wall at the bottom of the first cone pulley 810;

the poking piece 816 is an arc-shaped steel sheet with a certain thickness, the side wall of the inner ring of the poking piece 816 is provided with a sliding groove, the sliding groove is matched with a flat circular ring fixedly connected with the side wall of the bottom of the first cone pulley 810, the poking piece 816 is clamped with the first cone pulley 810 through the flat circular ring, and meanwhile, the side wall of the flat circular ring is in sliding connection with the sliding groove of the poking piece 816;

a spring 814 is arranged between the bottom of the third cone pulley 812 and the second mounting plate 809, one end of the spring 814 is contacted with the bottom of the third cone pulley 812, and the other end of the spring 814 is contacted with the second mounting plate 809, and the spring 814 is kept in a compressed state, so that the spring 814 always pushes the third cone pulley 812 to the fourth cone pulley 813;

when the lifting part of the poking sheet 816 generates height change, the first cone pulley 810 is driven to slide up and down on the driving shaft 817, so that the distance between the first cone pulley 810 and the second cone pulley 811 is changed, as the first cone pulley 810 is in a cone-shaped structure, the synchronous belt 815 slides along the inclined surfaces of the first cone pulley 810 and the second cone pulley 811, when the first cone pulley 810 and the second cone pulley 811 are close to each other, the synchronous belt 815 is expanded in the direction away from the driving shaft 817, the rotation radius of the synchronous belt 815 at one end of the driving shaft 817 is increased, meanwhile, as the total length of the synchronous belt 815 is unchanged, when the synchronous belt 815 is pushed by the first cone pulley 810 to move by the synchronous belt 815, the third cone pulley 812 is pushed by the synchronous belt 815 to move towards the second mounting plate 809, the first cone pulley 810 and the third cone pulley 812 move in the same direction, so that the synchronous belt 815 keeps coaxially rotating, the rotating radius of the synchronous belt 815 at one end of the driven shaft 818 is reduced, the rotating radius of the driven shaft 818 is increased along with the rotating radius of the synchronous belt 815 at one end of the driving shaft 817, the rotating speed of the driven shaft 818 is gradually increased, and similarly, when the first cone pulley 810 and the second cone pulley 811 are mutually far away, the rotating radius of the synchronous belt 815 at one end of the driving shaft 817 is reduced, the third cone pulley 812 is close to the fourth cone pulley 813 under the action of the spring 814, the rotating radius of the synchronous belt 815 at one end of the driven shaft 818 is increased, the rotating speed of the rotary table 801 is gradually reduced, the rotating speed of the rotary table 801 is adjusted, and the rotating precision of the first mechanical arm 7 is improved.

Further optimizing scheme, lifting part includes lift cylinder 805, and lift cylinder 805 removes end rigid coupling and has first installation piece 806, and first installation piece 806 lateral wall rigid coupling has second installation piece 803, and second installation piece 803 one end rigid coupling has a plurality of slide bars 804, and a plurality of slide bars 804 symmetry set up, and a plurality of slide bars 804 run through first mounting panel 807 and plectrum 816 rigid coupling.

The movable end of the lifting cylinder 805 is fixedly connected with a first mounting block 806, the side wall of the first mounting block 806 is fixedly connected with a second mounting block 803, the first mounting block 806 and the second mounting block 803 are of an integrated structure, the bottom of the second mounting block 803 is fixedly connected with a plurality of sliding rods 804, the sliding rods 804 are symmetrically arranged, and the sliding rods 804 penetrate through the first mounting plate 807 and are fixedly connected with the top of the poking plate 816. The number of slide bars 804 in this embodiment is preferably two, so that the direction of the pulling plate 816 is kept unchanged when it moves up and down, and the number of slide bars 804 is at least two.

Further optimizing scheme, sliding component includes two first baffles 4, two first baffle 4 bottoms and base 1 top rigid couplings, two first baffle 4 symmetry sets up, rotate between two first baffles 4 and be connected with threaded rod 6, threaded rod 6 runs through first slider 3 middle part, threaded rod 6 and first slider 3 threaded connection, threaded rod 6 transmission is connected with second drive division, sliding component still includes two card strips 2, two card strips 2 and base 1 top rigid couplings, card strip 2 and the perpendicular setting in first baffle 4 space, two first baffles 4 are located between two card strips 2, card strip 2 lateral wall and the 3 lateral wall sliding connection of first slider.

The middle part of the first sliding block 3 is provided with a threaded hole which penetrates through, the threaded hole in the middle part of the first sliding block 3 is in threaded connection with the threaded rod 6, the bottom of the first sliding block 3 is of an isosceles trapezoid structure, the upper part of the first sliding block 3 is of a cuboid structure, the isosceles trapezoid structure at the bottom of the first sliding block 3 is matched with a chute formed by encircling two clamping strips 2, the first sliding block 3 can only slide along the top of the base 1, the base 1 is prevented from falling off through the two clamping strips 2, and the directivity of the base 1 during sliding is improved.

Further preferably, the first driving part comprises a first driving motor 802, the side wall of the first driving motor 802 is fixedly connected with a first mounting plate 807, and an output shaft of the first driving motor 802 penetrates through the first mounting plate 807 to be fixedly connected with a driving shaft 817.

Further optimizing scheme, the second drive portion includes second drive motor 5, and second drive motor 5 lateral wall and arbitrary first baffle 4 lateral wall rigid coupling, second drive motor 5 output shaft runs through first baffle 4 and threaded rod 6 rigid coupling.

Further optimizing scheme, card strip 2 is right trapezoid structure, and card strip 2 minor face one side and base 1 top rigid coupling, card strip 2 hypotenuse one side and the lateral wall sliding connection of first slider 3.

The working procedure of this embodiment is as follows: when in use, the second driving motor 5 drives the threaded rod 6 to rotate so that the first sliding block 3 transversely moves at the top of the base 1, the first driving motor 802 drives the driving shaft 817 to rotate, the driving shaft 817 drives the first cone pulley 810 and the second cone pulley 811 to rotate, the first cone pulley 810 and the second cone pulley 811 rotate the synchronous belt 815 through friction force, the synchronous belt 815 further drives the third cone pulley 812 and the fourth cone pulley 813 to rotate through friction force, the driven shaft 818 rotates, the turntable 801 further rotates, the whole device is adjusted in multiple directions in space, the whole device has higher degree of freedom, when the lifting cylinder 805 generates height change through the pulling sheet 816, the first cone pulley 810 is driven to slide up and down on the driving shaft 817, the distance between the first cone pulley 810 and the second cone pulley 811 is changed, the synchronous belt 815 slides along the inclined planes of the first cone pulley 810 and the second cone pulley 811, when the first cone pulley 810 and the second cone pulley 811 are close to each other, the timing belt 815 is expanded in a direction away from the driving shaft 817, so that the rotation radius of the timing belt 815 at one end of the driving shaft 817 is increased, meanwhile, because the total length of the timing belt 815 is unchanged, the timing belt 815 pushes the third cone pulley 812 to move toward the second mounting plate 809, so that the timing belt 815 keeps coaxially rotating, so that the rotation radius of the timing belt 815 at one end of the driven shaft 818 is reduced, as the rotation radius of the timing belt 815 at one end of the driving shaft 817 is increased, so that the rotation speed of the driven shaft 818 is gradually increased, similarly, when the first cone pulley 810 and the second cone pulley 811 are far away from each other, the rotation radius of the timing belt 815 at one end of the driving shaft 817 is reduced, the third cone pulley 812 approaches the fourth cone pulley 813 under the action of the spring 814, the rotation radius of the timing belt 815 at one end of the driven shaft 818 is increased, so that the rotation speed of the turntable 801 is gradually reduced, and further, the rotating speed of the turntable 801 is adjusted, and the rotating precision of the first mechanical arm 7 is improved.

Example 2

Referring to fig. 5-7, the difference between this embodiment and embodiment 1 is that the welding mechanism 12 includes a third mounting plate 1202, a plurality of second brackets 1203 are fixedly connected to the third mounting plate 1202 in the circumferential direction, a fourth mounting plate 1204 is fixedly connected to the other ends of the plurality of second brackets 1203, the third mounting plate 1202 and the fourth mounting plate 1204 are symmetrically arranged, a rotating shaft 1205 is disposed between the third mounting plate 1202 and the fourth mounting plate 1204, two ends of the rotating shaft 1205 are respectively rotationally connected to the third mounting plate 1202 and the fourth mounting plate 1204, one end of the rotating shaft 1205 penetrates through the third mounting plate 1202 and is fixedly connected to the welding nozzle 1201, a connecting block 1206 is sleeved outside the middle of the rotating shaft 1205, the connecting block 1206 is fixedly connected to the rotating shaft 1205, one end of the connecting block 1206 is hinged with a connecting rod 1207, the other end of the connecting rod 1207 is slidingly connected to the curved chute 1208, one end of the curved chute 1208 is fixedly connected to an output shaft of a third driving motor 1210, the third driving motor 1210 is fixedly connected to the third mounting plate 1202 through a motor mounting plate 1209, and the output shaft of the third driving motor 1210 is arranged in a collinear manner with the axis of the connecting block 1206.

The curved chute 1208 is an arc steel sheet, the side wall of the curved chute 1208 is provided with a through chute, the through chute is matched with one end of the connecting rod 1207, one end of the connecting rod 1207 is in sliding connection with the curved chute 1208 through the through chute, one end of the connecting rod 1207, which is close to the curved chute 1208, is provided with a screw hole, the connecting rod 1207 can be fixedly connected with the curved chute 1208 through a bolt, when the third driving motor 1210 drives the curved chute 1208 to rotate, the curved chute 1208 drives the connecting rod 1207 to rotate so as to enable the rotating shaft 1205 to swing, the welding nozzle 1201 generates left-right deflection, one end of the connecting rod 1207 slides in the curved chute 1208, the connecting rod 1207 is fixedly connected with the curved chute 1208 through a nut, the swing amplitude of the rotating shaft 1205 is adjusted, the swing amplitude of the welding nozzle 1201 is adjusted, the welding nozzle 1201 swings during welding operation conveniently, and the welding operation accuracy is improved.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims (8)

1. An angle adjustment mechanism of welding robot, its characterized in that: the novel mechanical arm comprises a base (1), wherein a sliding component is fixedly connected to the top of the base (1), a first sliding block (3) is connected to the sliding component in a transmission mode, the bottom of the first sliding block (3) is connected with the top of the base (1) in a sliding mode, a first rotating mechanism (8) is fixedly connected to the top of the first sliding block (3), a first mechanical arm (7) is fixedly connected to the bottom of the top of the first rotating mechanism (8), a second rotating mechanism (9) is fixedly connected to one side of the side wall of the upper portion of the first mechanical arm (7), a second mechanical arm (10) is fixedly connected to the other side of the second rotating mechanism (9), a third rotating mechanism (11) is fixedly connected to one side of the side wall of one end of the second mechanical arm (10), and a welding mechanism (12) is fixedly connected to the other side of the third rotating mechanism (11).

The first rotating mechanism (8) comprises a first mounting plate (807), one side of the first mounting plate (807) is rotationally connected with one end of a driving speed changing part, the other end of the driving speed changing part is rotationally connected with a second mounting plate (809), the first mounting plate (807) and the second mounting plate (809) are symmetrically arranged, the first mounting plate (807) and the second mounting plate (809) are fixedly connected through a plurality of first brackets (808), the driving speed changing part is in transmission connection with a driven speed changing part through a synchronous belt (815), the driven speed changing part is located between the first mounting plate (807) and the second mounting plate (809), two ends of the driven speed changing part are respectively in rotational connection with the first mounting plate (807) and the second mounting plate (809), the driven speed changing part is in transmission connection with a rotary table (801), the driving speed changing part is in transmission connection with a first driving part, the first driving part is fixedly connected with the first mounting plate (807), and the second rotating mechanism (9) and the third rotating mechanism (11) are identical in structure with the first rotating mechanism (8).

2. The angle adjustment mechanism of a welding robot of claim 1, wherein: the driving speed change part comprises a driving shaft (817), two ends of the driving shaft (817) are respectively and rotatably connected with the first mounting plate (807) and the second mounting plate (809), a second conical table wheel (811) is sleeved on the driving shaft (817), a first conical table wheel (810) is sleeved on the driving shaft (817), the first conical table wheel (810) is fixedly connected with the driving shaft (817), the first conical table wheel (810) and the conical surface of the second conical table wheel (811) are oppositely arranged, a synchronous belt (815) is positioned between the first conical table wheel (810) and the second conical table wheel (811), and the first conical table wheel (810) and the second conical table wheel (811) are in frictional contact with the side face of the synchronous belt (815); the side part of the second cone pulley (811) is clamped with a poking piece (816), the inner wall of the poking piece (816) is in sliding connection with the side part of the second cone pulley (811), the poking piece (816) is fixedly connected with a lifting part, and the lifting part is fixedly connected with the first mounting plate (807).

3. The angle adjustment mechanism of a welding robot of claim 2, wherein: driven variable speed portion includes driven shaft (818), driven shaft (818) both ends respectively with first mounting panel (807) with second mounting panel (809) rotate and are connected, the cover is equipped with fourth cone pulley (813) on driven shaft (818), fourth cone pulley (813) with driven shaft (818) fixed connection, still the cover is equipped with third cone pulley (812) on driven shaft (818), third cone pulley (812) with driven shaft (818) sliding connection, third cone pulley (812) with fourth cone pulley (813) conical surface sets up relatively, third cone pulley (812) bottom with be equipped with spring (814) between second mounting panel (809), spring (814) one end with third cone pulley (812) contact, the spring (814) other end with second mounting panel (809) contact, driven shaft (818) rigid coupling, third cone pulley (812) with fourth cone pulley (813) conical surface contacts with carousel (815) lateral wall.

4. The angle adjustment mechanism of a welding robot of claim 2, wherein: the lifting part comprises a lifting cylinder (805), a first mounting block (806) is fixedly connected to the moving end of the lifting cylinder (805), a second mounting block (803) is fixedly connected to the side wall of the first mounting block (806), a plurality of sliding rods (804) are fixedly connected to one end of the second mounting block (803), the sliding rods (804) are symmetrically arranged, and the sliding rods (804) penetrate through the first mounting plate (807) and are fixedly connected with the shifting plate (816).

5. The angle adjustment mechanism of a welding robot of claim 1, wherein: the sliding assembly comprises two first baffles (4), two the bottoms of the first baffles (4) are fixedly connected with the tops of the bases (1), two the first baffles (4) are symmetrically arranged, a threaded rod (6) is connected between the first baffles (4) in a rotating mode, the threaded rod (6) penetrates through the middle of the first sliding block (3), the threaded rod (6) is in threaded connection with the first sliding block (3), the threaded rod (6) is in transmission connection with a second driving part, the sliding assembly further comprises two clamping strips (2), two clamping strips (2) are fixedly connected with the tops of the bases (1), the clamping strips (2) are vertically arranged in space of the first baffles (4), the two first baffles (4) are located between the clamping strips (2), and the side walls of the clamping strips (2) are in sliding connection with the side walls of the first sliding block (3).

6. The angle adjustment mechanism of a welding robot of claim 2, wherein: the first driving part comprises a first driving motor (802), the side wall of the first driving motor (802) is fixedly connected with the first mounting plate (807), and the output shaft of the first driving motor (802) penetrates through the first mounting plate (807) to be fixedly connected with the driving shaft (817).

7. The angle adjustment mechanism of a welding robot of claim 5, wherein: the second driving part comprises a second driving motor (5), the side wall of the second driving motor (5) is fixedly connected with the side wall of any first baffle (4), and the output shaft of the second driving motor (5) penetrates through the first baffle (4) and is fixedly connected with the threaded rod (6).

8. The angle adjustment mechanism of a welding robot of claim 5, wherein: the clamping strip (2) is of a right trapezoid structure, one side of the short side of the clamping strip (2) is fixedly connected with the top of the base (1), and one side of the bevel edge of the clamping strip (2) is in sliding connection with the side wall of the first sliding block (3).

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