A bicycle frame welding robot

Abstract

The application discloses a bicycle frame welding robot and relates to the technical field of bicycle frame welding.The bicycle frame welding robot comprises a base and a welding mechanism.The welding mechanism comprises a mounting plate fixedly connected to the upper end of the base, a first rotating shaft rotatably connected to the side wall of the mounting plate, a first rod fixedly connected to the side wall of the first rotating shaft, a vertical groove formed in the upper end of the first rod, a first sliding plug sealingly and slidably connected to the inner wall of the vertical groove, a second rod fixedly connected to the upper end of the first sliding plug, and a first spring fixedly connected between the inner bottom of the vertical groove and the first sliding plug.In the application, the motor can be started to make the welding gun rotate one circle to form a line intersection trajectory, so that the line intersection welding between the large pipe and the small pipe is formed.Compared with manual work, the line intersection welding is realized through a mechanical mechanism, and the efficiency is higher.Compared with the use of expensive control equipment and control programs, the mechanical structure is low in price and low in failure rate, and is suitable for small and medium-sized enterprises.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bicycle frame welding, in particular to a bicycle frame welding robot. BACKGROUND

[0002] The bicycle is also called a pedal car or a bicycle, which is usually a small land vehicle with two wheels. People ride the bicycle and pedal with their feet. It is a green and environmentally friendly transportation tool. There are many types of bicycles, such as single bicycles, double bicycles, and multi-person bicycles, which can be used as environmentally friendly transportation tools for walking and traveling.

[0003] The bicycle frame includes a head tube, an upper tube, a lower tube, and a vertical tube. Each tube needs to be welded and fixed. The welding position is usually in the form of a intersecting line, so the welding gun needs to run in the form of a intersecting line during welding. At present, this kind of running track is usually realized by manual operation or related control equipment. Manual operation of the welding gun has low welding efficiency and irregular welding seam shape. If the related control equipment is used to control the welding gun to run in the form of a intersecting line, the corresponding control equipment needs to be controlled by a control program. The device program is expensive to purchase, and it is not suitable for small and medium-sized enterprises.

[0004] Based on this, we propose a bicycle frame welding robot. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a bicycle frame welding robot.

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

[0007] A bicycle frame welding robot, comprising a base;

[0008] A welding mechanism, the welding mechanism comprises a mounting plate fixedly connected to the upper end of the base, a first rotating shaft is rotatably connected to the side wall of the mounting plate, a first rod is fixedly connected to the side wall of the first rotating shaft, a vertical slot is formed in the upper end of the first rod, a first sliding plug is sealingly and slidably connected to the inner wall of the vertical slot, a second rod is fixedly connected to the upper end of the first sliding plug, a first spring is fixedly connected between the inner bottom of the vertical slot and the first sliding plug, the second rod penetrates through the upper end of the first rod and is fixedly connected with a sliding cylinder, a sliding rod is sealingly and slidably connected to the inner wall of the sliding cylinder, a welding gun is fixedly connected to one end of the sliding rod, an L-shaped bracket is fixedly connected to the upper end of the base, a second rotating shaft is rotatably connected to the inner top of the L-shaped bracket, a third rod is fixedly connected to the side wall of the second rotating shaft, a horizontal slot is formed in the side wall of the third rod, a second sliding plug is sealingly and slidably connected to the inner wall of the horizontal slot, a fourth rod is fixedly connected to the side wall of the second sliding plug, a second spring is fixedly connected between the fourth rod and the inner wall of the horizontal slot, and the side wall of the welding gun is slidably connected with the fourth rod.

[0009] The L-shaped frame is provided with a driving mechanism.

[0010] Preferably, the driving mechanism comprises a motor fixedly connected to the upper end of the L-shaped frame through a support, a first gear fixedly connected to the output end of the motor, and a second rotating shaft penetrating through the upper end of the L-shaped frame and fixedly connected to the side wall of the second rotating shaft and provided with a second gear.

[0011] Preferably, the mounting plate is provided with a fixing mechanism, which comprises a fifth rod fixedly connected to the side wall of the mounting plate, a first fixing seat fixedly connected to the other end of the fifth rod, a plurality of first sliding grooves formed in the side wall of the first fixing seat, a first fixing rod sealingly and slidably connected to the inner wall of each of the first sliding grooves, a first fixing plate fixedly connected to one end of the first fixing rod, and a third spring fixedly connected between the inner wall of the first sliding groove and the first fixing rod.

[0012] Preferably, the fixing mechanism further comprises an L-shaped rod fixedly connected to the side wall of the first fixing seat, a recess formed in the upper end of the L-shaped rod, a sixth rod slidably connected to the inner wall of the recess, a second fixing seat fixedly connected to the upper end of the sixth rod, a fourth spring fixedly connected between the inner bottom of the recess and the sixth rod, a plurality of second sliding grooves formed in the side wall of the second fixing seat, a second fixing rod sealingly and slidably connected to the inner wall of each of the second sliding grooves, a second fixing plate fixedly connected to the other end of the second fixing rod, and a fifth spring fixedly connected between the inner wall of the second sliding groove and the second fixing rod.

[0013] Preferably, the first rotating shaft is provided with an adjusting mechanism, which comprises a first air inlet groove formed in the first rotating shaft, a first air pipe communicating the first air inlet groove with the vertical groove, a first rotary joint fixedly connected to the side wall of the mounting plate through a support, and one end of the first rotating shaft penetrating through the side wall of the mounting plate and fixedly connected to the first rotary joint, wherein the inner wall of one of the first sliding grooves is fixedly connected with a first communication pipe, and the other end of the first communication pipe is fixedly connected to the first rotary joint.

[0014] Preferably, the adjusting mechanism further comprises a second air inlet groove formed in the second rotating shaft, a second air pipe communicating the second air inlet groove with the horizontal groove, a second rotary joint fixedly connected to the upper end of the L-shaped frame through a support, and the upper end of the second rotating shaft fixedly connected to the second rotary joint, wherein the inner wall of one of the second sliding grooves is fixedly connected with a second communication pipe, and the other end of the second communication pipe is fixedly connected to the second rotary joint.

[0015] Preferably, the L-shaped rack is provided with a cooling mechanism, the cooling mechanism comprises a liquid inlet cavity formed in the L-shaped rack, a plurality of liquid injection holes are formed in the inner wall of the liquid inlet cavity, a one-way liquid inlet pipe is fixedly connected to the inner wall of the sliding cylinder, the other end of the one-way liquid inlet pipe is communicated with a container for storing cooling liquid outside, and the sliding cylinder is communicated with the liquid inlet cavity through a one-way liquid outlet pipe.

[0016] Preferably, a ventilation groove is formed in the top of the L-shaped rack, a plurality of fan leaves are fixedly connected to the side wall in the ventilation groove, and a smoke exhaust pipe is fixedly connected to the inner wall of the ventilation groove, and the other end of the smoke exhaust pipe is communicated with a container for collecting smoke dust outside.

[0017] Preferably, the distance from the first fixed plate to the center of the first fixed seat is equal to the distance from the center of the sliding cylinder to the first rotating shaft, and the distance from the second fixed plate to the center of the second fixed seat is equal to the distance from the center of the second rotating shaft to the center of the welding gun.

[0018] The present application has the following advantages:

[0019] 1. By setting the welding mechanism and the driving mechanism, the motor can be started to make the welding gun rotate one circle to form a line intersection trajectory, and the line intersection welding between the large pipe and the small pipe is formed. Compared with manual operation, the mechanical mechanism is used to realize the welding, the efficiency is higher, compared with the use of expensive control equipment and control program, the mechanical structure is low in price and low in failure rate, and is suitable for small and medium-sized enterprises.

[0020] 2. By setting the fixing mechanism and the adjusting mechanism, different pipe diameters can be welded, and the line intersection trajectory of the welding gun is also adjusted synchronously, so that the whole device can be used for welding pipe materials with different pipe diameters, and the application range is wider.

[0021] 3. By setting the cooling mechanism, during the welding process, the external cooling liquid is drawn into the sliding cylinder through the one-way liquid inlet pipe due to the reciprocating sealing sliding of the sliding rod, then the cooling liquid enters the liquid inlet cavity through the one-way liquid outlet pipe, and finally the cooling liquid is sprayed through the plurality of liquid injection holes, so as to cool the large pipe and the small pipe quickly and avoid damage of the pipe material caused by high temperature.

[0022] 4. When the pipe material with smaller pipe diameter is welded, the reciprocating sliding distance of the sliding rod in the inner wall of the sliding cylinder is shorter, and less cooling liquid is drawn out for cooling. For the pipe material with smaller pipe diameter, the heat generated during welding is less, so less cooling liquid can be used for cooling. Therefore, the cooling effect of the cooling liquid can be optimized, and the cooling liquid can not be wasted.

[0023] 5、By setting the ventilation groove, fan blade and smoke exhaust pipe, the second rotating shaft rotation will drive multiple fan blade rotation, thereby generating suction, welding process generated dust will be sucked into the ventilation groove, then the dust will be through the smoke exhaust pipe into the external dust collection container, thereby avoiding the welding process generated dust flying into the air, causing pollution to the working environment. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0025] Figure 2 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings; Figure 1 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0026] Figure 3 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings; Figure 1 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0027] Figure 4 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings; Figure 3 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0028] Figure 5 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings; Figure 3 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0029] Figure 6 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings; Figure 3 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0030] Figure 7 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings; Figure 3 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings;

[0031] Figure 8 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings. Figure 3 A perspective view of a bicycle frame welding robot according to the present application is shown in the drawings.

[0032] In the figure: 1, base; 2, mounting plate; 3, first rotating shaft; 4, first rod; 5, vertical slot; 6, second rod; 7, sliding cylinder; 8, sliding rod; 9, welding gun; 10, L-shaped frame; 11, second rotating shaft; 12, third rod; 13, first spring; 14, horizontal slot; 15, fourth rod; 16, second spring; 17, motor; 18, first gear; 19, second gear; 20, fifth rod; 21, first fixed seat; 22, first sliding slot; 23, first fixed rod; 24, first fixed plate; 25, third spring; 26, L-shaped rod; 27, groove; 28, sixth rod; 29, second fixed seat; 30, fourth spring; 31, second sliding slot; 32, second fixed rod; 33, second fixed plate; 34, fifth spring; 35, first air inlet slot; 36, first air pipe; 37, first rotating joint; 38, first communication pipe; 39, second air inlet slot; 40, second air pipe; 41, second rotating joint; 42, second communication pipe; 43, liquid inlet cavity; 44, liquid injection hole; 45, one-way liquid inlet pipe; 46, one-way liquid outlet pipe; 47, ventilation slot; 48, fan blade; 49, smoke exhaust pipe; 50, first sliding plug; 51, second sliding plug. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0034] REFERENCE Figure 1 - Figure 8 A bicycle frame welding robot comprises a base 1;

[0035] The utility model relates welding mechanism, welding mechanism includes the mounting plate 2 fixedly connected on the bottom 1 upper end, the first rotation axis 3 rotationally connected with the side wall of mounting plate 2, the first rod 4 is fixedly connected with the side wall of first rotation axis 3, the vertical groove 5 is seted up in the first rod 4 upper end, the first sliding plug 50 is sealingly slidably connected in the inner wall of vertical groove 5, the second rod 6 is fixedly connected with the first sliding plug 50 upper end, the first spring 13 is fixedly connected between the inner bottom of vertical groove 5 and first sliding plug 50, the sliding cylinder 7 is fixedly connected in the second rod 6 upper end and penetrates the first rod 4 upper end, the sliding rod 8 is sealingly slidably connected in the inner wall of sliding cylinder 7, the welding torch 9 is fixedly connected with the one end of sliding rod 8, the L type frame 10 is fixedly connected on the bottom 1 upper end, the second rotation axis 11 is rotationally connected with the inner top of L type frame 10, the third rod 12 is fixedly connected with the side wall of second rotation axis 11, the horizontal groove 14 is seted up in the side wall of third rod 12, the second sliding plug 51 is sealingly slidably connected in the inner wall of horizontal groove 14, the fourth rod 15 is fixedly connected with the side wall of second sliding plug 51, the second spring 16 is fixedly connected between the inner wall of horizontal groove 14 and fourth rod 15, and the welding torch 9 side wall is slidably connected with the fourth rod 15;

[0036] The L type frame 10 is provided with a driving mechanism.

[0037] The driving mechanism includes the motor 17 fixedly connected on the L type frame 10 upper end through the support, the first gear 18 is fixedly connected with the motor 17 output end, the second rotation axis 11 is arranged and penetrates the L type frame 10 upper end, the second gear 19 is fixedly connected with the side wall of second rotation axis 11, and the first gear 18 is meshingly connected with the second gear 19.

[0038] Further, start motor 17, drive first gear 18 rotation, in turn drive second gear 19 rotation, drive second rotation axis 11 rotation, thereby drive third rod 12 rotation, drive fourth rod 15 rotation, so that the welding torch 9 makes circular motion with the center of second rotation axis 11, in this process, due to the limitation of sliding rod 8, sliding cylinder 7, first rod 4 and second rod 6, the welding torch 9 will move up and down short distance, form the high and low of the intersection line, and in this process, first rod 4 and second rod 6 will reciprocating swing, so that first rotation axis 3 reciprocating rotation, and in the rotation process of welding torch 9, sliding rod 8 will reciprocating sealingly slide in the inner wall of sliding cylinder 7, so that the welding torch 9 rotates a circle and forms the intersection line track, forms the intersection line welding between big pipe and small pipe, compared with artificial, realize through mechanical mechanism, efficiency is higher, compared with the adoption of expensive control equipment and control program, mechanical structure is low in price, and failure rate is low, and is applicable to small and medium-sized enterprises.

[0039] The mounting plate 2 is provided with a fixing mechanism, which comprises a fifth rod 20 fixedly connected to the side wall of the mounting plate 2, a first fixing seat 21 fixedly connected to the other end of the fifth rod 20, a plurality of first sliding grooves 22 formed in the side wall of the first fixing seat 21, a first fixing rod 23 sealingly and slidably connected to the inner wall of each of the first sliding grooves 22, a first fixing plate 24 fixedly connected to one end of the first fixing rod 23, and a third spring 25 fixedly connected between the inner wall of each of the first sliding grooves 22 and the first fixing rod 23.

[0040] The fixing mechanism further comprises an L-shaped rod 26 fixedly connected to the side wall of the first fixing seat 21, a groove 27 formed in the upper end of the L-shaped rod 26, a sixth rod 28 slidably connected to the inner wall of the groove 27, a second fixing seat 29 fixedly connected to the upper end of the sixth rod 28, a fourth spring 30 fixedly connected between the inner bottom of the groove 27 and the sixth rod 28, a plurality of second sliding grooves 31 formed in the side wall of the second fixing seat 29, a second fixing rod 32 sealingly and slidably connected to the inner wall of each of the second sliding grooves 31, a second fixing plate 33 fixedly connected to the other end of the second fixing rod 32, and a fifth spring 34 fixedly connected between the inner wall of each of the second sliding grooves 31 and the second fixing rod 32.

[0041] Further, the large pipe is sleeved on the side wall of the first fixing plate 24, and under the action of the third spring 25, the plurality of first fixing plates 24 will be tightly attached to the inner wall of the large pipe, so as to fix the large pipe, and then the small pipe is sleeved on the side wall of the second fixing plate 33, and under the action of the fifth spring 34, the plurality of second fixing plates 33 will be tightly attached to the inner wall of the small pipe, so as to fix the small pipe.

[0042] The first rotating shaft 3 is provided with an adjusting mechanism, which comprises a first air inlet groove 35 formed in the first rotating shaft 3, a first air communication pipe 36 communicating the first air inlet groove 35 with the vertical groove 5, a first rotary joint 37 fixedly connected to the side wall of the mounting plate 2 through a support, and the first rotating shaft 3 penetrates through the side wall of the mounting plate 2 and is fixedly connected to the first rotary joint 37, wherein the inner wall of one of the first sliding grooves 22 is fixedly connected with a first communication pipe 38, and the other end of the first communication pipe 38 is fixedly connected to the first rotary joint 37.

[0043] The adjusting mechanism further comprises a second air inlet groove 39 formed in the second rotating shaft 11, a second air communication pipe 40 communicating the second air inlet groove 39 with the horizontal groove 14, a second rotary joint 41 fixedly connected to the upper end of the L-shaped bracket 10 through a support, and the upper end of the second rotating shaft 11 is fixedly connected to the second rotary joint 41, wherein the inner wall of one of the second sliding grooves 31 is fixedly connected with a second communication pipe 42, and the other end of the second communication pipe 42 is fixedly connected to the second rotary joint 41.

[0044] The distance from the first fixed plate 24 to the center of the first fixed seat 21 is equal to the distance from the center of the sliding cylinder 7 to the first rotating shaft 3, and the distance from the second fixed plate 33 to the center of the second fixed seat 29 is equal to the distance from the center of the second rotating shaft 11 to the center of the welding gun 9.

[0045] It should be noted that the fixing between the second communication pipe 42 and the inner wall of the second sliding groove 31 is in a detachable manner by screwing, and when the small pipe is fixed, the second communication pipe 42 can be turned out, and after the small pipe is fixed, the second communication pipe 42 is screwed into the second sliding groove 31.

[0046] Further, when fixing the large pipe and the small pipe before welding, since the first fixed plate 24 directly abuts the inner wall of the large pipe, when fixing different large pipes, the first fixed plate 24 will stretch and contract, thereby driving the first fixed rod 23 to seal sliding in the inner wall of the first sliding groove 22, at this time, the air in the first sliding groove 22 will enter the first air inlet groove 35 through the first communication pipe 38, then the air will enter the vertical groove 5 through the first air pipe 36, or the air in the vertical groove 5 is sucked back into the first sliding groove 22, so that the second rod 6 is raised or lowered, and the distance of the second rod 6 changes in size, which is the same as the distance changed by the first fixed plate 24, thereby for welding of large pipes with different diameters, the distance from the center of the sliding cylinder 7 to the first rotating shaft 3 will also change synchronously, so that the distance from the center of the sliding cylinder 7 to the center of the first rotating shaft 3 remains the same as the internal radius of the large pipe, and for the same reason, since the second fixed plate 33 directly abuts the inner wall of the small pipe, when fixing different small pipes, the second fixed plate 33 will stretch and contract, thereby driving the second fixed rod 32 to seal sliding in the inner wall of the second sliding groove 31, at this time, the air in the second sliding groove 31 will enter the second air inlet groove 39 through the second communication pipe 42, then the air will enter the horizontal groove 14 through the second air pipe 40, or the air in the horizontal groove 14 is sucked back into the second sliding groove 31, thereby causing the fourth rod 15 to move, and the movement distance of the fourth rod 15 is the same as the movement distance of the second fixed plate 33, thereby for welding of small pipes with different diameters, the distance from the center of the welding gun 9 to the center of the second rotating shaft 11 remains the same as the internal radius of the small pipe, so for welding of large pipes and small pipes with different diameters, the running trace of the welding gun 9 also synchronously adjusts, so that the whole device can be suitable for welding of pipes with different diameters, and the application range is wider.

[0047] The L-shaped frame 10 is provided with a cooling mechanism, which comprises a liquid inlet cavity 43 opened in the L-shaped frame 10, a plurality of liquid injection holes 44 are opened in the inner wall of the liquid inlet cavity 43, a one-way liquid inlet pipe 45 is fixedly connected to the inner wall of the sliding cylinder 7, the other end of the one-way liquid inlet pipe 45 is communicated with an external container storing cooling liquid, the one-way liquid inlet pipe 45 only allows the external cooling liquid to enter the sliding cylinder 7, the sliding cylinder 7 is communicated with the liquid inlet cavity 43 through a one-way liquid outlet pipe 46, and the one-way liquid outlet pipe 46 only allows the cooling liquid in the sliding cylinder 7 to enter the liquid inlet cavity 43.

[0048] Further, during the welding process, due to the reciprocating sealing sliding of the slide rod 8, the external cooling liquid can be sucked into the slide cylinder 7 through the one-way liquid inlet pipe 45, then the cooling liquid can enter into the liquid inlet cavity 43 through the one-way liquid outlet pipe 46, and finally the cooling liquid is sprayed through the plurality of liquid injection holes 44 to the large pipe and the small pipe, so as to quickly cool them and avoid damage of the pipe material due to high temperature.

[0049] It is worth mentioning that when welding the pipe material with smaller pipe diameter, the reciprocating sliding distance of the slide rod 8 in the inner wall of the slide cylinder 7 will be shorter, and thus less cooling liquid will be sucked out for cooling. For the pipe material with smaller pipe diameter, the heat generated during welding will be less, and thus less cooling liquid can be used for cooling, so that the cooling effect of the cooling liquid can be optimized and the cooling liquid can not be wasted.

[0050] The L-shaped frame 10 is provided with a ventilation groove 47 at the top, the second rotating shaft 11 is fixedly connected with a plurality of fan leaves 48 on the side wall in the ventilation groove 47, and the inner wall of the ventilation groove 47 is fixedly connected with an exhaust pipe 49, and the other end of the exhaust pipe 49 is in communication with an external container for collecting smoke dust.

[0051] Further, the rotation of the second rotating shaft 11 drives the rotation of the plurality of fan leaves 48, so as to generate suction force. The smoke dust generated during the welding process can be sucked into the ventilation groove 47, and then the smoke dust can be discharged into the external smoke dust collection container through the exhaust pipe 49, so as to avoid the smoke dust generated during the welding process from flying into the air and polluting the working environment.

[0052] In the present application, the large pipe is sleeved on the side wall of the first fixed plate 24, and under the action of the third spring 25, the plurality of first fixed plates 24 are tightly attached to the inner wall of the large pipe, so as to fix the large pipe. Then the small pipe is sleeved on the side wall of the second fixed plate 33, and under the action of the fifth spring 34, the plurality of second fixed plates 33 are tightly attached to the inner wall of the small pipe, so as to fix the small pipe.

[0053] Then the motor 17 is started, the first gear 18 is driven to rotate, the second gear 19 is driven to rotate, the second rotating shaft 11 is driven to rotate, the third rod 12 is driven to rotate, the fourth rod 15 is driven to rotate, so that the welding gun 9 makes a circular motion with the center of the second rotating shaft 11, in this process, due to the limiting of the slide rod 8, the slide cylinder 7, the first rod 4 and the second rod 6, the welding gun 9 will move up and down for a short distance, forming the high and low positions of the intersecting line, and in this process, the first rod 4 and the second rod 6 will reciprocating swing, so that the first rotating shaft 3 reciprocating rotates forward and backward, and in the rotating process of the welding gun 9, the slide rod 8 will reciprocating seal sliding in the inner wall of the slide cylinder 7, so that the welding gun 9 rotates one circle to form the intersecting line track, forming the intersecting line welding between the large pipe and the small pipe, compared with manual, through the mechanical structure, the efficiency is higher, compared with the use of expensive control equipment and control program, the mechanical structure is low in price, and the failure rate is low, suitable for small and medium-sized enterprises.

[0054] And in the process of welding, due to the reciprocating sealing sliding of the slide rod 8, the external cooling liquid will be sucked into the slide cylinder 7 through the one-way liquid inlet pipe 45, then the cooling liquid will enter the liquid inlet cavity 43 through the one-way liquid outlet pipe 46, finally the cooling liquid is sprayed through the plurality of liquid injection holes 44, sprayed on the large pipe and the small pipe, to quickly cool them, to avoid high temperature damage to the pipe.

[0055] And the rotation of the second rotating shaft 11 will drive the plurality of fan blades 48 to rotate, so as to generate suction force, the smoke generated in the welding process will be sucked into the ventilation groove 47, then the smoke will be discharged into the external smoke collection container through the smoke exhaust pipe 49, so as to avoid the smoke generated in the welding process flying into the air, causing pollution to the working environment.

[0056] When the large pipe and the small pipe are fixed before welding, the first fixing plate 24 directly adheres to the inner wall of the large pipe, and when different large pipes are fixed, the first fixing plate 24 will stretch and retract, thereby driving the first fixing rod 23 to seal sliding in the inner wall of the first sliding groove 22. At this time, the air in the first sliding groove 22 will enter the first air inlet groove 35 through the first communication pipe 38, and then the air will enter the vertical groove 5 through the first air pipe 36, or the air in the vertical groove 5 is sucked back into the first sliding groove 22, so that the second rod 6 is raised or lowered, and the distance of the second rod 6 changes in size, which is the same as the distance changed by the first fixing plate 24, thereby the distance between the center of the sliding cylinder 7 and the first rotating shaft 3 also changes synchronously, so that the distance between the center of the sliding cylinder 7 and the center of the first rotating shaft 3 remains the same as the internal radius of the large pipe. Similarly, the second fixing plate 33 directly adheres to the inner wall of the small pipe, and when different small pipes are fixed, the second fixing plate 33 will stretch and retract, thereby driving the second fixing rod 32 to seal sliding in the inner wall of the second sliding groove 31. At this time, the air in the second sliding groove 31 will enter the second air inlet groove 39 through the second communication pipe 42, and then the air will enter the horizontal groove 14 through the second air pipe 40, or the air in the horizontal groove 14 is sucked back into the second sliding groove 31, so that the fourth rod 15 moves, and the moving distance of the fourth rod 15 is the same as the moving distance of the second fixing plate 33. Thus, for welding different pipe diameters of small pipes, the distance between the center of the welding gun 9 and the center of the second rotating shaft 11 remains the same as the internal radius of the small pipe. Therefore, for welding different pipe diameters of large pipes and small pipes, the relative trajectory of the welding gun 9 also synchronously adjusts, so that the entire device can be suitable for welding pipes of different diameters, and has a wider range of applications.

[0057] In addition, when welding pipes with smaller diameters, the sliding rod 8 reciprocally slides in the inner wall of the sliding cylinder 7, and the distance is shorter, thereby less cooling liquid is extracted for cooling. For pipes with smaller diameters, the heat generated during welding is less, so less cooling liquid can be used for cooling. Therefore, the cooling effect of the cooling liquid can be optimized, and the cooling liquid is not wasted.

[0058] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A bicycle frame welding robot characterized by, The utility model relates to a welding device, including: a base; a welding mechanism, the welding mechanism includes the mounting plate fixedly connected on the bottom of base, the first rotating shaft is rotatably connected to the side wall of mounting plate, the first rotating shaft is fixedly connected with the first rod on the side wall, the vertical slot is seted up on the first rod upper end, the first sliding plug is sealingly and slidably connected to the inner wall of vertical slot, the first sliding plug is fixedly connected with the second rod on the upper end, the first spring is fixedly connected between the inner bottom of vertical slot and the first sliding plug, the second rod upper end penetrates the first rod upper end and is fixedly connected with the sliding cylinder, the sliding cylinder is sealingly and slidably connected to the inner wall of sliding cylinder, the sliding rod is fixedly connected to one end of sliding cylinder, the welding gun is fixedly connected to the one end of sliding rod, the L-shaped frame is fixedly connected to the bottom of base, the second rotating shaft is rotatably connected to the inner top of L-shaped frame, the third rod is fixedly connected to the side wall of second rotating shaft, the horizontal slot is seted up on the side wall of third rod, the second sliding plug is sealingly and slidably connected to the inner wall of horizontal slot, the fourth rod is fixedly connected to the side wall of second sliding plug, the second spring is fixedly connected between the inner wall of horizontal slot and the fourth rod, the welding gun side wall is slidably connected with the fourth rod; The L-shaped frame is provided with a driving mechanism; The mounting plate is provided with a fixing mechanism, the fixing mechanism includes the fifth rod fixedly connected to the side wall of mounting plate, the first fixed seat is fixedly connected to the other end of fifth rod, the first fixed seat is provided with a plurality of first sliding grooves on the side wall, the first fixed rod is sealingly and slidably connected to the inner wall of each first sliding groove, the first fixed rod is fixedly connected to the first fixed plate on one end, the third spring is fixedly connected between the inner wall of first sliding groove and the first fixed rod; The fixing mechanism further includes the L-shaped rod fixedly connected to the side wall of first fixed seat, the recess is seted up on the upper end of L-shaped rod, the sixth rod is slidably connected to the inner wall of recess, the second fixed seat is fixedly connected to the upper end of sixth rod, the fourth spring is fixedly connected between the inner bottom of recess and the sixth rod, the second fixed seat is provided with a plurality of second sliding grooves on the side wall, the second fixed rod is sealingly and slidably connected to the inner wall of each second sliding groove, the second fixed rod is fixedly connected to the second fixed plate on the other end, the fifth spring is fixedly connected between the inner wall of second sliding groove and the second fixed rod; The first rotating shaft is provided with an adjusting mechanism, the adjusting mechanism includes the first air inlet groove seted up in the first rotating shaft, the first air inlet groove is communicated with vertical slot through first air pipe, the first rotating joint is fixedly connected to the side wall of mounting plate through support, one end of first rotating shaft penetrates the side wall of mounting plate and is fixedly connected with first rotating joint, the first communication pipe is fixedly connected to the inner wall of one first sliding groove, the other end of first communication pipe is fixedly connected with first rotating joint; The adjusting mechanism further includes the second air inlet groove seted up in the second rotating shaft, the second air inlet groove is communicated with horizontal slot through second air pipe, the second rotating joint is fixedly connected to the upper end of L-shaped frame through support, the upper end of second rotating shaft is fixedly connected with second rotating joint, the second communication pipe is fixedly connected to the inner wall of one second sliding groove, the other end of second communication pipe is fixedly connected with second rotating joint; The distance from first fixed plate to the center of first fixed seat is equal to the distance from the center of sliding cylinder to first rotating shaft, the distance from second fixed plate to the center of second fixed seat is equal to the distance from the center of second rotating shaft to the center of welding gun; The driving mechanism comprises a motor fixedly connected to the upper end of the L-shaped frame through a support, a first gear fixedly connected to the output end of the motor, and a second rotating shaft penetrating through the upper end of the L-shaped frame, with a second gear fixedly connected to the side wall of the second rotating shaft, and the first gear and the second gear being in meshing connection.

2. A bicycle frame welding robot according to claim 1, characterized in that, Wherein: A cooling mechanism is mounted on the L-shaped frame, which comprises a liquid inlet cavity formed in the L-shaped frame, a plurality of liquid injection holes formed in the inner wall of the liquid inlet cavity, a one-way liquid inlet pipe fixedly connected to the inner wall of the sliding cylinder, the other end of the one-way liquid inlet pipe being in communication with an external container for storing cooling liquid, and the sliding cylinder being in communication with the liquid inlet cavity through a one-way liquid outlet pipe.

3. A bicycle frame welding robot according to claim 1, characterized in that, Wherein: A ventilation groove is formed in the top of the L-shaped frame, a plurality of fan blades are fixedly connected to the side wall of the second rotating shaft located in the ventilation groove, a smoke exhaust pipe is fixedly connected to the inner wall of the ventilation groove, and the other end of the smoke exhaust pipe is in communication with an external container for collecting smoke dust.

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