A welding robot conductive nozzle replacement device

Abstract

The invention discloses a conductive nozzle replacement device for a welding robot, comprising a top plate, a side plate fixedly provided on one side of the top plate, a bottom plate fixedly provided on one end of the side plate away from the top plate, a working space formed between the top plate and the bottom plate, and a conductive nozzle disassembly mechanism and a conductive nozzle installation mechanism provided in the working space; the invention has nozzle disassembly and installation functions, conductive nozzle disassembly function, conductive nozzle installation function, wire cutting function and gun cleaning function; the invention drives the clamping mechanism to rotate by designing a gear transmission, and the nozzle is pressed down and locked to realize the nozzle disassembly and assembly function; the conductive nozzle disassembly function is realized by driving the rotary clamping mechanism to rotate, clamp and rotate again; the conductive nozzle installation function is realized by pressing down the rotary pressing plug mechanism, so that the meshing upper part of the conductive nozzle mounting seat is meshed with the meshing lower part; the conductive nozzle installation function is realized; the wire cutting and gun cleaning functions are realized by the rotation of the gear drive shaft; the replacement of the conductive nozzle and the disassembly and assembly of the nozzle are efficient and accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a conductive nozzle replacement device for a welding robot. Background Art

[0002] During use, the conductive nozzle replacement device is composed of a gear transmission, a clamping mechanism and a motor. The gear drives the clamping mechanism to rotate, and the clamping rotation and locking function of the clamping mechanism is used to realize the clamping rotation and disassembly function to achieve the purpose of conductive nozzle replacement. Most of the existing replacements are completed by manual disassembly and assembly, which has low work efficiency, takes up manpower and too much production operation time. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide a welding robot conductive nozzle replacement device.

[0004] The technical solution adopted by the present invention is:

[0005] The cam is fixedly provided with a bottom plate at one end of the top plate, and a bottom plate is fixedly provided at one end of the side plate away from the top plate, and a working space is formed between the top plate and the bottom plate, and a conductive nozzle disassembly mechanism and a conductive nozzle installation mechanism are provided in the working space; the conductive nozzle disassembly mechanism comprises a first gear connecting shaft, the first gear connecting shaft is rotatably connected to the bottom plate, a first gear is provided on the first gear connecting shaft, a second elastic connecting shaft is fixedly provided at one end of the first gear connecting shaft away from the bottom plate, a hole sleeve is detachably installed on the second elastic connecting shaft, a clamping barrel is fixedly provided at one end of the hole sleeve away from the second elastic connecting shaft, a plurality of sliding grooves are provided on the circumferential side of the clamping barrel, and the plurality of sliding grooves are evenly distributed along the circumference of the clamping barrel and run through the circumferential side of the clamping barrel, a clamping block is slidably provided in each of the sliding grooves, and a clamping block is provided on a side of the clamping block close to the hole sleeve There is a spring top piece, a first spring is provided on the side of the spring top piece away from the clamping block, and two ends of the first spring are fixedly connected to the spring top piece and the clamping cylinder respectively; the conductive nozzle mounting mechanism comprises a friction upper disk, the friction upper disk is rotatably connected to the top plate, a switching disk is fixedly provided on one side of the friction upper disk, and a friction lower disk is fixedly provided on the side of the switching disk away from the friction upper disk, a placement space is formed between the friction upper disk and the friction lower disk, a plurality of conductive nozzle mounting hole axes are provided in the placement space, and the plurality of conductive nozzle mounting hole axes are evenly distributed along the circumference of the friction upper disk, and the two ends of each conductive nozzle mounting hole axis respectively penetrate the friction upper disk and the friction lower disk, and a second spring is provided on the circumferential side of each conductive nozzle mounting hole axis, and the two ends of the second spring are respectively abutted against the friction lower disk and the conductive nozzle mounting hole axis, and a conductive nozzle is arranged on each conductive nozzle mounting hole axis.

[0006] As a preferred embodiment of the present invention, the conductive nozzle disassembly mechanism also includes a tightening sleeve, which is located on the outside of the clamping sleeve, and is rotatably connected to the clamping sleeve. A limit end cover is fixedly provided at one end of the tightening sleeve close to the clamping block, and a limit card is provided on the inner side of the limit end cover. A limit groove is fixedly provided at one end of the clamping sleeve close to the clamping block, and the limit card cooperates with the limit groove; a plurality of control grooves are provided on the inner wall of the tightening sleeve, and the plurality of control grooves are evenly distributed along the circumference of the tightening sleeve, and the plurality of control grooves correspond one-to-one to the plurality of clamping blocks.

[0007] As a preferred embodiment of the present invention, a rotating sleeve is fixedly provided at one end of the tightening sleeve away from the limiting end cover, a first fixing screw is fixedly provided on the inner side of the rotating sleeve, a first waist-shaped hole is fixedly provided on the circumferential side of the second elastic connecting shaft, the first fixing screw is slidably connected to the first waist-shaped hole, a third spring is provided between the rotating sleeve and the clamp, and both ends of the third spring are fixedly connected to the rotating sleeve and the clamp respectively; the first gear is connected to the first gear connecting shaft through a first friction plate, and a first thrust bearing is provided between the first gear connecting shaft and the base plate.

[0008] As a preferred embodiment of the present invention, a support connecting cylinder is provided at the center of the friction upper disk, and two ends of the support connecting cylinder are fixedly connected to the friction upper disk and the friction lower disk respectively, and the support connecting cylinder is connected to the tightening sleeve through a second friction plate; a plurality of switching grooves are provided on the switching disk, and the plurality of switching grooves are connected in sequence, the number of the switching grooves is the same as the number of the conductive nozzle mounting hole axes, a limit block is provided between two adjacent switching grooves, a clamping groove is provided at a position corresponding to the limit block on the friction lower disk, and a rotary pressing plug assembly is provided on one side of the friction upper disk; the rotary pressing plug assembly includes a spring fixing seat, the spring fixing seat is fixedly arranged on the mounting disk, the mounting disk is fixedly connected to the top plate, a spring seat is fixedly provided on one side of the spring fixing seat, a switching pressing column is slidably provided in the spring seat, a spring column is fixedly provided on the switching pressing column, a round head column is slidably provided on one side of the spring column, and a clamping shaft is fixedly provided at one end of the switching pressing column, and the clamping shaft cooperates with the clamping groove.

[0009] As a preferred embodiment of the present invention, the conductive nozzle mounting mechanism also includes a second gear, which is located on one side of the first gear, the second gear is meshed with the first gear, the second gear is arranged on the second gear connecting shaft through a third friction plate, the second gear connecting shaft is rotatably connected to the base plate through a second thrust bearing, a first elastic connecting shaft is provided at one end of the second gear connecting shaft away from the second thrust bearing, a second waist-shaped hole is fixedly provided on the circumference of the first elastic connecting shaft, a second set screw is fixedly provided on the second gear connecting shaft, the second set screw is slidably connected to the second waist-shaped hole, a fourth spring is provided in the second gear connecting shaft, the two ends of the fourth spring are respectively fixedly connected to the first elastic connecting shaft and the second gear connecting shaft, and a lower meshing sleeve is fixedly provided at one end of the first elastic connecting shaft away from the second gear connecting shaft; a coupling is fixedly provided at one end of each of the conductive nozzle mounting hole shafts close to the top plate, and an upper meshing sleeve is fixedly provided on each of the couplings, and the upper meshing sleeve is adapted to the conductive nozzle mounting hole shaft.

[0010] As a preferred embodiment of the present invention, it also includes a driving gear, which is fixedly set on the driving shaft, the driving shaft is rotatably connected to the base plate, the driving gear is located on the side of the second gear away from the first gear, and the driving gear is meshed with the first gear; the driving shaft runs through the working space, and the driving shaft is connected to the output shaft of the driving motor.

[0011] As a preferred embodiment of the present invention, it also includes a nozzle disassembly and assembly mechanism, which includes a locking sleeve, which is rotatably arranged on one side of the sleeve, and the sleeve is fixedly connected to the mounting plate, a cylinder is arranged in the locking sleeve, a top cover is fixedly arranged at one end of the cylinder, a base is fixedly arranged at the end of the cylinder away from the top cover, a plurality of clamps are arranged on the circumference of the cylinder, the clamps are used to clamp the nozzle, and the plurality of clamps are evenly distributed along the circumference of the cylinder, a rotating pin is fixedly arranged on the clamp, the rotating pin is rotatably connected to the cylinder, an inclined surface is formed on the side of the clamp away from the axis of the cylinder, each of the inclined surfaces cooperates with a cylindrical pin, and the plurality of cylindrical pins are respectively rotatably connected to the clamping sleeve; an auxiliary clamp is fixedly arranged on the end of each clamp close to the top cover.

[0012] As a preferred embodiment of the present invention, a third elastic connecting shaft is fixedly provided on the base, a third fixing screw is fixedly provided on the side of the third elastic connecting shaft, a third gear connecting shaft is provided on the side of the third elastic connecting shaft away from the cylinder, a third waist-shaped hole is provided on the circumference of the third gear connecting shaft, the third fixing screw is slidably connected to the third waist-shaped hole, a fifth spring is provided in the third elastic connecting shaft, the two ends of the fifth spring are respectively fixedly connected to the base and the third gear connecting shaft, the third gear connecting shaft is rotatably connected to the base plate through a third thrust bearing, a third gear is provided on the third gear connecting shaft, the third gear connecting shaft is connected to the third gear through a fourth friction plate, and the third gear is meshed with the driving gear.

[0013] As a preferred embodiment of the present invention, it also includes a wire cutting mechanism, which includes a wire cutting mounting vertical plate, which is fixedly connected to the side plate, a mounting box is fixedly provided on the wire cutting mounting vertical plate, a notch is formed on the side of the mounting box away from the wire cutting mounting vertical plate, a cutting knife is provided in the notch, the cutting knife is fixedly provided on a rotating shaft, the rotating shaft is rotatably connected to the mounting box, a fourth gear is fixedly provided at one end of the rotating shaft away from the cutting knife, the fourth gear is arranged in the wire cutting gear baffle, a wire cutting upper plate is fixedly provided on one side of the wire cutting gear baffle, and the wire cutting upper plate is fixedly connected to the side plate; the fourth gear is transmission connected to the third gear through a transition gear.

[0014] As a preferred embodiment of the present invention, it also includes a gun cleaning mechanism, which includes a gun cleaning mounting vertical plate, the gun cleaning mounting vertical plate is fixedly connected to the side plate, a gun cleaning gear upper plate is fixedly provided on the gun cleaning mounting vertical plate, a gun cleaning gear baffle is fixedly provided on one side of the gun cleaning gear upper plate, a fifth gear is rotatably provided in the gun cleaning gear baffle, a gun cleaning sleeve is coaxially fixed on the fifth gear, and the fifth gear is transmission-connected to the third gear through a transition gear; it also includes a positioning mechanism, the positioning mechanism includes a sensor mounting seat, the sensor mounting seat is fixedly connected to the top plate, and an optical fiber sensor is provided on the sensor mounting seat.

[0015] The beneficial effects of the present invention are as follows: as a welding robot conductive nozzle replacement device, the present invention has nozzle disassembly and installation functions, conductive nozzle disassembly function, conductive nozzle installation function, wire cutting function and gun cleaning function; the present invention realizes the nozzle disassembly and installation function by designing a gear transmission to drive the clamping mechanism to rotate, and the nozzle is pressed down and locked to realize the nozzle disassembly and installation function; the conductive nozzle disassembly function is realized by driving the rotary clamping mechanism to rotate, clamp and then rotate; the conductive nozzle installation function is realized by pressing down and rotating the pressing plug mechanism so that the upper engaging part of the conductive nozzle mounting seat is engaged with the lower engaging part; the wire cutting and gun cleaning functions are realized by rotating the gear drive shaft; the replacement of the conductive nozzle and the disassembly and installation of the nozzle are efficient and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 The present invention Figure 1 Schematic diagram of the internal structure after the side panels and top panels are hidden;

[0019] Figure 3 The present invention Figure 2 Schematic diagram of the structure after the installation disk is hidden;

[0020] Figure 4 The present invention Figure 1 Schematic diagram of the contact nozzle installation mechanism structure;

[0021] Figure 5 The present invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0022] Figure 6 The present invention Figure 4 Schematic diagram of the structure after the friction upper plate is hidden;

[0023] Figure 7 The present invention Figure 4 A schematic diagram of a lower engagement sleeve and its associated structure;

[0024] Figure 8 The present invention Figure 7 A schematic diagram of the front view structure of

[0025] Fig. 9 The present invention Figure 8 Schematic diagram of the BB direction structure;

[0026] Fig.10 The present invention Figure 4 A schematic diagram of the structure of a rotary pressing plug assembly;

[0027] Fig.11 The present invention Figure 1 Schematic diagram of the contact nozzle disassembly mechanism structure;

[0028] Fig.12 The present invention Fig.11 Schematic diagram of the structure after the clamping sleeve is hidden;

[0029] Fig.13 The present invention Fig.12 Schematic diagram of the structure after the clamp is hidden;

[0030] Fig.14 The present invention Fig.11A schematic diagram of the front view structure of

[0031] Fig.15 The present invention Fig.14 Schematic diagram of CC direction structure;

[0032] Fig.16 The present invention Fig.14 Schematic diagram of the DD direction structure;

[0033] Fig.17 The present invention Figure 1 A schematic diagram of the internal structure of the nozzle disassembly and assembly mechanism after the locking sleeve is hidden;

[0034] Fig.18 The present invention Fig.11 A schematic diagram of the front view structure of

[0035] Fig.19 The present invention Fig.18 Schematic diagram of the EE direction structure;

[0036] Fig. 20 The present invention Fig.18 Schematic diagram of the structure after the cylinder is hidden;

[0037] Fig.21 The present invention Figure 1 Schematic diagram of the wire cutting mechanism structure;

[0038] Fig. 22 The present invention Fig.21 Schematic diagram of the structure after the wire cutting upper plate and the installation box are hidden;

[0039] Fig.23 The present invention Figure 1 Structural diagram of gun cleaning mechanism;

[0040] Fig.24 The present invention Fig.23 Schematic diagram of the structure after the upper plate of the gun cleaning gear is hidden;

[0041] Fig.25 The present invention Figure 1 Schematic diagram of the positioning mechanism structure. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0044] Combine the following Figure 1-25The specific embodiment of the present invention is described, a welding robot conductive nozzle replacement device, including a top plate 11, a side plate 14 is fixedly provided on one side of the top plate 11, a bottom plate 22 is fixedly provided on the end of the side plate 14 away from the top plate 11, a working space is formed between the top plate 11 and the bottom plate 22, a conductive nozzle disassembly mechanism 12 and a conductive nozzle installation mechanism 13 are provided in the working space; the conductive nozzle disassembly mechanism 12 includes a first gear connecting shaft 56, the first gear connecting shaft 56 is rotatably connected to the bottom plate 22, a first gear 59 is provided on the first gear connecting shaft 56, and the first gear connecting shaft 56 is away from the bottom plate A second elastic connecting shaft 66 is fixedly provided at one end of the second elastic connecting shaft 66, and a hole sleeve 63 is detachably mounted on the second elastic connecting shaft 66. A clamp 67 is fixedly provided at one end of the hole sleeve 63 away from the second elastic connecting shaft 66. A plurality of slide grooves 62 are evenly distributed along the circumference of the clamp 67 and penetrate the circumference of the clamp 67. A clamp block 61 is slidably provided in each of the slide grooves 62. A spring top piece 69 is provided on the side of the clamp block 61 close to the hole sleeve 63. A first spring 68 is provided on the side of the spring top piece 69 away from the clamp block 61. The first spring 68 is provided on the side of the first spring 68. The two ends of 8 are fixedly connected to the spring top member 69 and the clamping cylinder 67 respectively; the clamping block 61 is a special-shaped push block with an inclined surface, which completes the clamping of the conductive nozzle by moving and completes the removal of the conductive nozzle by rotating. The conductive nozzle mounting mechanism 13 includes a friction upper disk 31, and the friction upper disk 31 is rotatably connected to the top plate 11. A switching disk 29 is fixedly provided on one side of the friction upper disk 31, and a friction lower disk 30 is fixedly provided on the side of the switching disk 29 away from the friction upper disk 31. A placement space is formed between the friction upper disk 31 and the friction lower disk 30, and a plurality of conductive nozzle mounting hole shafts 27 are provided in the placement space, and a plurality of conductive nozzle mounting hole shafts 27 are provided in the placement space. The conductive nozzle mounting hole axis 27 is evenly distributed along the circumference of the friction upper disk 31, and both ends of each conductive nozzle mounting hole axis 27 respectively penetrate the friction upper disk 31 and the friction lower disk 30, and a second spring 38 is provided on the circumferential side of each conductive nozzle mounting hole axis 27, and both ends of the second spring 38 are respectively abutted against the friction lower disk 30 and the conductive nozzle mounting hole axis 27, and a conductive nozzle 26 is arranged on each conductive nozzle mounting hole axis 27; a plurality of conductive nozzles 26 are provided on the conductive nozzle mounting mechanism 13, and the number in the embodiment of the present invention is eight, and a suitable number can be selected according to actual needs in actual production.

[0045] Advantageously, the conductive nozzle disassembly mechanism 12 also includes a clamping sleeve 55, wherein the clamping sleeve 55 is located on the outer side of the clamping sleeve 67, and the clamping sleeve 55 is rotatably connected to the clamping sleeve 67. A limiting end cover 54 is fixedly provided at one end of the clamping sleeve 55 close to the clamping block 61, and a limiting card 53 is provided on the inner side of the limiting end cover 54. A limiting groove 60 is fixedly provided at one end of the clamping sleeve 67 close to the clamping block 61, and the limiting card 53 cooperates with the limiting groove 60; a plurality of control grooves 105 are provided on the inner wall of the clamping sleeve 55, and the plurality of control grooves 105 are evenly distributed along the circumference of the clamping sleeve 55, and the plurality of control grooves 105 correspond one-to-one to the plurality of clamping blocks 61.

[0046] Advantageously, a rotating sleeve 71 is fixedly provided at one end of the clamping sleeve 55 away from the limiting end cover 54, a first set screw 64 is fixedly provided inside the rotating sleeve 71, a first waist-shaped hole 65 is fixedly provided on the circumference of the second elastic connecting shaft 66, the first set screw 64 is slidably connected to the first waist-shaped hole 65, a third spring 70 is provided between the rotating sleeve 71 and the clamping sleeve 67, and the two ends of the third spring 70 are respectively fixedly connected to the rotating sleeve 71 and the clamping sleeve 67; the first gear 59 is connected to the first gear connecting shaft 56 through a first friction plate 57, and a first thrust bearing 58 is provided between the first gear connecting shaft 56 and the bottom plate 22. The thrust bearing can bear the axial load to a certain extent, thereby improving the service life of the device.

[0047] Advantageously, a support connecting cylinder 37 is provided at the center of the friction upper disk 31, and the two ends of the support connecting cylinder 37 are fixedly connected to the friction upper disk 31 and the friction lower disk 30 respectively, and the support connecting cylinder 37 is connected to the clamping sleeve 55 through the second friction plate 36; a plurality of switching grooves 33 are provided on the switching disk 29, and the plurality of switching grooves 33 are connected in sequence, and the number of the switching grooves 33 is the same as the number of the conductive nozzle mounting hole shafts 27, and a limit block 32 is provided between two adjacent switching grooves 33, and a card slot 45 is provided at a position corresponding to the limit block 32 on the friction lower disk 30, and a rotary pressing plug assembly 28 is provided on one side of the friction upper disk 31; The rotary pressing plug assembly 28 includes a spring fixing seat 49, which is fixedly arranged on the mounting disk 19, and the mounting disk 19 is fixedly connected to the top plate 11. A spring seat 51 is fixedly arranged on one side of the spring fixing seat 49, and a switching pressing column 47 is slidably arranged in the spring seat 51. A spring column 50 is fixedly arranged on the switching pressing column 47, and a round head column 48 is slidably arranged on one side of the spring column 50. A clamping shaft 52 is fixedly arranged at one end of the switching pressing column 47, and the clamping shaft 52 cooperates with the clamping groove 45; a spring wrapped around the switching pressing column 47 is arranged in the spring seat 51, and a spring connected to the round head column 48 is arranged in the spring column 50.

[0048] Advantageously, the conductive nozzle mounting mechanism 13 further includes a second gear 40, the second gear 40 is located on one side of the first gear 59, the second gear 40 is meshed with the first gear 59, the second gear 40 is arranged on a second gear connecting shaft 44 through a third friction plate 39, the second gear connecting shaft 44 is rotatably connected to the base plate 22 through a second thrust bearing 46, a first elastic connecting shaft 43 is provided at one end of the second gear connecting shaft 44 away from the second thrust bearing 46, a second waist-shaped hole 41 is fixedly provided on the circumference of the first elastic connecting shaft 43, and a second set screw 1 is fixedly provided on the second gear connecting shaft 44 04, the second set screw 104 is slidably connected with the second waist-shaped hole 41, a fourth spring 94 is provided in the second gear connecting shaft 44, the two ends of the fourth spring 94 are respectively fixedly connected with the first elastic connecting shaft 43 and the second gear connecting shaft 44, and the end of the first elastic connecting shaft 43 away from the second gear connecting shaft 44 is fixedly provided with a lower engaging sleeve 42; each of the conductive nozzle mounting hole shafts 27 is fixedly provided with a coupling 35 at one end close to the top plate 11, and an upper engaging sleeve 34 is fixedly provided on each of the couplings 35, and the upper engaging sleeve 34 is adapted to the conductive nozzle mounting hole shaft 27.

[0049] Advantageously, it further comprises a driving gear 21, which is fixedly arranged on a driving shaft, the driving shaft is rotatably connected to the bottom plate 22, the driving gear 21 is located on a side of the second gear 40 away from the first gear 59, and the driving gear 21 is meshed with the first gear 59; the driving shaft passes through the working space, and the driving shaft is connected to the output shaft of the driving motor. The driving motor is programmed and can rotate forward and reverse.

[0050] Advantageously, the nozzle disassembly and assembly mechanism 17 is further included, and the nozzle disassembly and assembly mechanism 17 includes a locking sleeve 23, and the locking sleeve 23 is rotatably arranged on one side of the shaft sleeve 18, and the shaft sleeve 18 is fixedly connected to the mounting plate 19, and a cylinder 74 is arranged inside the locking sleeve 23, and a top cover 73 is fixedly arranged at one end of the cylinder 74, and a base 86 is fixedly arranged at one end of the cylinder 74 away from the top cover 73, and a plurality of clamping claws 76 are arranged on the peripheral side of the cylinder 74, and the clamping claws 76 are used to clamp the nozzle. 24, a plurality of the clamping jaws 76 are evenly distributed along the circumference of the cylinder 74, a rotating pin 83 is fixedly provided on the clamping jaw 76, the rotating pin 83 is rotatably connected to the cylinder 74, a side of the clamping jaw 76 away from the axis of the cylinder 74 forms an inclined surface 81, each of the inclined surfaces 81 cooperates with a cylindrical pin 75, and a plurality of the cylindrical pins 75 are rotatably connected to the clamping sleeve 55; an auxiliary clamp 82 is fixedly provided at one end of each of the clamping jaws 76 close to the top cover 73. The auxiliary clamp 82 is provided with a ridge-shaped protrusion for increasing friction, which cooperates with the structure on the side of the nozzle 24.

[0051] Advantageously, a third elastic connecting shaft 80 is fixedly provided on the base 86, a third set screw 72 is fixedly provided on the side of the third elastic connecting shaft 80, a third gear connecting shaft 78 is provided on the side of the third elastic connecting shaft 80 away from the cylinder 74, a third waist-shaped hole 103 is provided on the circumferential side of the third gear connecting shaft 78, the third set screw 72 is slidably connected to the third waist-shaped hole 103, a fifth spring 85 is provided in the third elastic connecting shaft 80, the two ends of the fifth spring 85 are respectively fixedly connected to the base 86 and the third gear connecting shaft 78, the third gear connecting shaft 78 is rotatably connected to the bottom plate 22 through a third thrust bearing 84, a third gear 79 is provided on the third gear connecting shaft 78, the third gear connecting shaft 78 is connected to the third gear 79 through a fourth friction plate 77, and the third gear 79 is meshed with the driving gear 21.

[0052] Advantageously, it further comprises a wire cutting mechanism 15, the wire cutting mechanism 15 comprises a wire cutting mounting upright plate 87, the wire cutting mounting upright plate 87 is fixedly connected to the side plate 14, a mounting box 92 is fixedly provided on the wire cutting mounting upright plate 87, a notch 91 is formed on the side of the mounting box 92 away from the wire cutting mounting upright plate 87, a cutting knife 90 is provided in the notch 91, the cutting knife 90 is fixedly provided on a rotating shaft 93, the rotating shaft 93 is rotatably connected to the mounting box 92, a fourth gear 95 is fixedly provided at one end of the rotating shaft 93 away from the cutting knife 90, the fourth gear 95 is arranged in a wire cutting gear baffle 89, a wire cutting upper plate 88 is fixedly provided on one side of the wire cutting gear baffle 89, the wire cutting upper plate 88 is fixedly connected to the side plate 14; the fourth gear 95 is transmission connected to the third gear 79 via a transition gear. The gun cleaning mechanism 25 includes a gun cleaning mounting plate 99, the gun cleaning mounting plate 99 is fixedly connected to the side plate 14, a gun cleaning gear upper plate 97 is fixedly provided on the gun cleaning mounting plate 99, a gun cleaning gear baffle 96 is fixedly provided on one side of the gun cleaning gear upper plate 97, a fifth gear 100 is rotatably provided in the gun cleaning gear baffle 96, a gun cleaning sleeve 98 is coaxially fixedly provided on the fifth gear 100, and the fifth gear 100 is transmission-connected to the third gear 79 through a transition gear; and also includes a positioning mechanism 16, the positioning mechanism 16 includes a sensor mounting seat 102, the sensor mounting seat 102 is fixedly connected to the top plate 11, and an optical fiber sensor 101 is provided on the sensor mounting seat 102. The optical fiber sensor 101 can effectively determine whether there is a conductive nozzle 26 and a nozzle 24 on the welding gun to determine the next step of the device.

[0053] Disassembly of the conductive nozzle 26: completed by the conductive nozzle disassembly mechanism 12, the drive motor is started, the drive motor drives the drive gear 21 to rotate, the drive gear 21 drives the second gear 40 to rotate through meshing, the second gear 40 drives the first gear 59 to rotate through meshing; the first gear 59 drives the first gear connecting shaft 56 to rotate, the first gear connecting shaft 56 drives the second elastic connecting shaft 66 to rotate, the second elastic connecting shaft 66 drives the hole sleeve 63 to rotate, the third spring 70, the clamping sleeve 67, the first spring 68, the spring top member 69 and the clamping block 61 rotate together with the hole sleeve 63; the rotating sleeve 71, the clamping sleeve 55 and the limit end cover 54 are constrained by the friction plate 36, and when the friction force is less than the maximum static friction force, no rotation occurs;

[0054] During this process, the clamp block 61 is initially in an open state, the end of the welding robot controls the conductive nozzle 26 to move to the upper side of the clamp block 61, and controls it to continue to move vertically downward until the conductive nozzle 26 is located in the middle of multiple clamp blocks 61, the drive motor is started, the clamp barrel 67 rotates relative to the clamping sleeve 55, and drives the clamp block 61 to clamp the conductive nozzle 26; the clamp block 61 is guided when passing through the control groove 105, thereby moving along the radial direction of the clamp barrel 67; when the clamp block 61 cannot continue to move radially, that is, when the conductive nozzle 26 is clamped to the tightest, the friction force reaches the maximum, and the clamping sleeve 55 will overcome the constraint of the friction plate 36, as shown in the attached Fig.11 The entire conductive tip removal mechanism 12 is shown to rotate and remove the conductive tip 26;

[0055] Reference Fig.16 When the disassembly process of any conductive nozzle 26 is completed, the clamp block 61 returns to the open state, completing a cycle; the driving motor controls the first gear 59 to rotate, driving the clamp barrel 67 to rotate, and when the clamp block 61 passes through the widest part of the control groove 105, the spring top member 69 moves upward under the action of the first spring 68, and pushes the multiple clamp blocks 61 away in the radial divergence direction of the clamping sleeve, that is, the clamp block 61 returns to the initial open state;

[0056] Installation of the conductive nozzle 26: completed by the conductive nozzle installation mechanism 13, the drive motor is started, the drive motor drives the drive gear 21 to rotate, the drive gear 21 drives the second gear 40 to rotate through meshing, and the second gear 40 drives the second gear connecting shaft 44 to rotate through the third friction plate 39; the lower meshing part includes a lower meshing sleeve 42 and a first elastic connecting shaft 43 that are solid as one, and the upper meshing part includes an upper meshing sleeve 34 and a coupling member 35; the lower meshing part rotates with the second gear connecting shaft 44, and when the upper meshing part falls and cooperates with the lower meshing part, the upper meshing sleeve 34 will also rotate with the lower meshing sleeve 42, thereby driving the corresponding conductive nozzle installation hole shaft 27 and the conductive nozzle 26 to rotate together;

[0057] The cooperation of the upper engagement sleeve 34 and the lower engagement sleeve 42 is controlled by the welding robot. The end of the welding robot moves to the top of the rotary pressing plug assembly 28 and presses down vertically. The switching pressing column 47 is pressed down and then moves down, and at the same time, the spring column 50 and the round head column 48 are driven to move down together. During this period, the round head column 48 is in close contact with the limit block 32 and slides. The round head column 48 first retracts into the spring column 50 and then immediately rebounds. Figure 5 , taking one of the limit blocks 32 corresponding to the reference numeral as an example, the round-headed column 48 slides from its upper side to the lower side, and the round-headed column 48 that originally prevents the switching disk 29 from rotating counterclockwise slides into a switching slot 33 on the left side, so that the switching disk 29 can rotate again by an angle corresponding to the switching slot 33, that is, forty-five degrees;

[0058] The power for the switching disk 29 to rotate comes from the contact nozzle removal mechanism 12, see the attached Figure 3 , the driving gear 21 rotates counterclockwise, driving the second gear 40 to rotate clockwise, and the second gear 40 rotates clockwise to drive the first gear 59 to rotate counterclockwise; the rotating sleeve 71, the clamping sleeve 55, and the limit end cover 54 are constrained by the conductive nozzle installation mechanism 13 within a certain range and do not rotate, but when the clamping sleeve 67 rotates a certain angle, the limit groove 60 contacts the limit card 53, and the clamping sleeve 67 continues to rotate, which will drive the clamping sleeve 55 to rotate together, and the clamping sleeve 55 drives the support connecting cylinder 37 to rotate through the second friction plate 36. Under the premise that there is no constraint from the rotating pressing plug assembly 28, the switching disk 29 rotates with the supporting connecting cylinder 37;

[0059] When one of the conductive tips 26 of the conductive tip installation mechanism 13 moves to the top of the lower engagement sleeve 42, the welding robot controls the welding gun to press down the conductive tip 26, the conductive tip installation hole shaft 27 slides relative to the friction lower plate 30 and the friction upper plate 31, the second spring 38 is compressed, and the coupling member 35 moves with the conductive tip installation hole shaft 27 until the upper engagement sleeve 34 contacts the lower engagement sleeve 42 to form a fit;

[0060] At this time, the driving motor reverses again, and the driving motor controls the driving gear 21 to rotate clockwise. The driving gear 21 drives the second gear 40 to rotate counterclockwise through meshing. The second gear 40 drives the lower meshing sleeve 42 through the upper meshing sleeve 34 to make the corresponding conductive tip 26 rotate clockwise, thereby installing it on the welding gun.

[0061] In the above process, when the driving motor reverses counterclockwise, although the first gear 59 also rotates counterclockwise, the clamping cylinder 67 and the clamping sleeve 55 will rotate. During this process, there is no conductive nozzle 26 between the clamping block 61, and the rotation angle of the clamping cylinder 67 and the clamping sleeve 55 is only constrained by the limit card 53 and the limit groove 60, thereby not driving the supporting connecting cylinder 37 to rotate. Therefore, during the installation process of the conductive nozzle 26, the switching disk 29 will remain stable and will not rotate.

[0062] Nozzle 24 disassembly and assembly: completed by the nozzle disassembly and assembly mechanism 17, refer to the attached Fig.17 , disassemble the nozzle 24, the welding robot controls the nozzle 24 to move to the position corresponding to the figure, and continues to press down. After the nozzle 24 touches the base 86, it continues to move downward, which will drive the base 86 to move together. The fifth spring 85 is compressed, and the cylinder 74 and the clamping claw 76 will move with the base 86. The cylinder 74 and the third elastic connecting shaft 80 and the locking sleeve 23 slide, and the clamping claw 76 moves downward relative to the cylindrical pin 75. After the inclined surface 81 contacts the cylindrical pin 75, under the action of the rotating pin 83, the clamping claw 76 is forced to rotate around the rotating pin 83. Refer to the attached Fig.19, a clamping jaw 76 corresponding to the reference numeral in the figure will rotate slightly clockwise, and multiple clamping jaws 76 will rotate synchronously to clamp the nozzle 24, and at the same time, the auxiliary clamp 82 will rotate with the clamping jaw 76, so as to be in close contact with the increased friction portion of the nozzle 24;

[0063] The driving motor is started to control the driving gear 21 to rotate. The driving gear 21 drives the third gear 79 to rotate through meshing. The third gear 79 drives the third gear connecting shaft 78 to rotate through the fourth friction plate 77. The entire nozzle disassembly mechanism 17 rotates, thereby completing the disassembly of the nozzle 24.

[0064] The installation of the nozzle 24 is consistent with the above principle. The nozzle 24 is first placed in the nozzle disassembly and assembly mechanism 17. After the welding gun moves to a specified position, the driving motor controls the rotation of the nozzle 24 to complete the installation of the nozzle 24.

[0065] Wire cutting: It is completed by the wire cutting mechanism 15. The drive motor is started to control the drive gear 21 to rotate. The drive gear 21 drives the third gear 79 to rotate. The third gear 79 drives the fourth gear 95 to rotate through the transition gear. The rotating shaft 93 and the cutting knife 90 rotate together with the fourth gear 95. The welding robot controls the part of the welding wire to be cut to move to the notch 91 to complete the cutting of the excess welding wire.

[0066] Gun cleaning: This is accomplished by the gun cleaning mechanism 25. The drive motor is started to control the drive gear 21 to rotate. The drive gear 21 drives the third gear 79 to rotate. The third gear 79 drives the fifth gear 100 to rotate through the transition gear. The gun cleaning sleeve 98 rotates synchronously with the fifth gear 100. During this period, the welding gun is placed in the fifth gear 100 to clean the welding gun.

[0067] In addition, in the present invention, friction plates are used to connect multiple gears and gear connecting shafts. It should be noted that the friction plate connection will still transmit torque; the significance of multiple elastic connecting shafts is to provide operating errors when the welding robot moves vertically to the corresponding positions of each mechanism, provide space for disassembly operations, and avoid damage to equipment.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A welding robot contact nozzle replacement device, characterized in that: The cam is configured to have a first end that is fixedly provided with a second gear and a second end that is fixedly provided with a second gear, the second end of the first gear being configured to have a first gear and a second end that is fixedly provided with a second gear. A first spring is provided on a side of the spring top member away from the clamping block, and two ends of the first spring are fixedly connected to the spring top member and the clamping cylinder respectively; the conductive nozzle mounting mechanism comprises a friction upper disk, the friction upper disk is rotatably connected to the top plate, a switching disk is fixedly provided on one side of the friction upper disk, and a friction lower disk is fixedly provided on the side of the switching disk away from the friction upper disk, a placement space is formed between the friction upper disk and the friction lower disk, a plurality of conductive nozzle mounting hole axes are provided in the placement space, and the plurality of conductive nozzle mounting hole axes are evenly distributed along the circumference of the friction upper disk, and the two ends of each conductive nozzle mounting hole axis respectively penetrate the friction upper disk and the friction lower disk, and a second spring is provided on the circumferential side of each conductive nozzle mounting hole axis, and the two ends of the second spring are respectively abutted against the friction lower disk and the conductive nozzle mounting hole axis, and a conductive nozzle is arranged on each conductive nozzle mounting hole axis; The conductive nozzle disassembly mechanism also includes a clamping sleeve, the clamping sleeve is located on the outside of the clamping sleeve, the clamping sleeve is rotatably connected to the clamping sleeve, a limiting end cover is fixedly provided on one end of the clamping sleeve close to the clamping block, a limiting card is provided on the inner side of the limiting end cover, and a limiting groove is fixedly provided on one end of the clamping sleeve close to the clamping block, and the limiting card cooperates with the limiting groove; a plurality of control grooves are provided on the inner wall of the clamping sleeve, and the plurality of control grooves are evenly distributed along the circumference of the clamping sleeve, and the plurality of control grooves correspond one-to-one to the plurality of clamping blocks; A rotating sleeve is fixedly provided at one end of the clamping sleeve away from the limiting end cover, a first set screw is fixedly provided on the inner side of the rotating sleeve, a first waist-shaped hole is fixedly provided on the circumferential side of the second elastic connecting shaft, the first set screw is slidably connected to the first waist-shaped hole, a third spring is provided between the rotating sleeve and the clamping sleeve, and the two ends of the third spring are respectively fixedly connected to the rotating sleeve and the clamping sleeve; the first gear is connected to the first gear connecting shaft through a first friction plate, and a first thrust bearing is provided between the first gear connecting shaft and the base plate; A support connecting cylinder is provided at the center of the friction upper disk, and two ends of the support connecting cylinder are respectively fixedly connected to the friction upper disk and the friction lower disk, and the support connecting cylinder is connected to the clamping sleeve through a second friction plate; a plurality of switching grooves are provided on the switching disk, and the plurality of switching grooves are connected in sequence, the number of the switching grooves is the same as the number of the conductive nozzle mounting hole shafts, and a limit block is provided between two adjacent switching grooves, and a clamping groove is provided at a position corresponding to the limit block on the friction lower disk, and a rotary pressing plug assembly is provided on one side of the friction upper disk; the rotary pressing plug assembly includes a spring fixing seat, which is fixedly arranged on the mounting disk, and the mounting disk is fixedly connected to the top plate, and a spring seat is fixedly provided on one side of the spring fixing seat, and a switching pressing column is slidably provided in the spring seat, and a spring column is fixedly provided on the switching pressing column, and a round head column is slidably provided on one side of the spring column, and a clamping shaft is fixedly provided at one end of the switching pressing column, and the clamping shaft cooperates with the clamping groove; The conductive nozzle mounting mechanism also includes a second gear, which is located on one side of the first gear, and the second gear is meshed with the first gear. The second gear is arranged on the second gear connecting shaft through a third friction plate, and the second gear connecting shaft is rotatably connected to the bottom plate through a second thrust bearing. A first elastic connecting shaft is provided at one end of the second gear connecting shaft away from the second thrust bearing, and a second waist-shaped hole is fixedly provided on the circumferential side of the first elastic connecting shaft, and a second set screw is fixedly provided on the second gear connecting shaft, and the second set screw is slidably connected to the second waist-shaped hole. A fourth spring is provided in the second gear connecting shaft, and the two ends of the fourth spring are respectively fixedly connected to the first elastic connecting shaft and the second gear connecting shaft, and a lower meshing sleeve is fixedly provided at one end of the first elastic connecting shaft away from the second gear connecting shaft; a coupling is fixedly provided at one end of each of the conductive nozzle mounting hole shafts close to the top plate, and an upper meshing sleeve is fixedly provided on each of the couplings, and the upper meshing sleeve is adapted to the conductive nozzle mounting hole shaft; The end of the welding robot runs to the top of the rotary pressing plug assembly and presses down vertically. The switching pressing column drops under pressure, driving the spring column and the round head column to drop together. During this period, the round head column is in close contact with the limit block and slides. The round head column first retracts into the spring column and then rebounds immediately; the round head column slides from the upper side to the lower side of one of the limit blocks, and the round head column that originally prevented the switching disk from rotating counterclockwise slides into a switching slot on the left, allowing the switching disk to rotate to the corresponding angle of a switching slot.

2. A welding robot contact tip replacement device according to claim 1, characterized in that: It also includes a driving gear, which is fixedly arranged on a driving shaft, the driving shaft is rotatably connected to the bottom plate, the driving gear is located on a side of the second gear away from the first gear, and the driving gear is meshed with the first gear; The driving shaft passes through the working space, and the driving shaft is connected to the output shaft of the driving motor.

3. A welding robot contact tip replacement device according to claim 2, characterized in that: The cam is fixedly provided with a cylinder body, one end of which is fixedly provided with a top cover, and an end of which is fixedly provided with a base. A plurality of clamping jaws are provided on the circumference of the cylinder body, and the clamping jaws are used to clamp the nozzle. The plurality of clamping jaws are evenly distributed along the circumference of the cylinder body. A rotating pin is fixedly provided on the clamping jaw, and the rotating pin is rotatably connected to the cylinder body. An inclined surface is formed on the side of the clamping jaw away from the axis of the cylinder body, and each inclined surface cooperates with a cylindrical pin. The plurality of cylindrical pins are rotatably connected to the clamping sleeve respectively. An auxiliary clamp is fixedly provided on the end of each clamping jaw close to the top cover.

4. A welding robot contact tip replacement device according to claim 3, characterized in that: A third elastic connecting shaft is fixedly provided on the base, a third fixing screw is fixedly provided on the side of the third elastic connecting shaft, a third gear connecting shaft is provided on the side of the third elastic connecting shaft away from the cylinder, a third waist-shaped hole is provided on the circumferential side of the third gear connecting shaft, the third fixing screw is slidably connected with the third waist-shaped hole, a fifth spring is provided in the third elastic connecting shaft, the two ends of the fifth spring are respectively fixedly connected with the base and the third gear connecting shaft, the third gear connecting shaft is rotatably connected with the bottom plate through a third thrust bearing, a third gear is provided on the third gear connecting shaft, the third gear connecting shaft is connected with the third gear through a fourth friction plate, and the third gear is meshed with the driving gear.

5. A welding robot contact tip replacement device according to claim 4, characterized in that: The cam is connected to the side plate of the machine, and a mounting box is fixedly arranged on the cam, a notch is formed on the side of the mounting box away from the cam, a cutting knife is arranged in the notch, the cutting knife is fixedly arranged on a rotating shaft, the rotating shaft is rotatably connected to the mounting box, a fourth gear is fixedly arranged on the end of the rotating shaft away from the cutting knife, the fourth gear is arranged in the wire cutting gear baffle, a wire cutting upper plate is fixedly arranged on one side of the wire cutting gear baffle, the wire cutting upper plate is fixedly connected to the side plate; the fourth gear is transmission connected to the third gear through a transition gear.

6. A welding robot contact tip replacement device according to claim 4, characterized in that: It also includes a gun cleaning mechanism, which includes a gun cleaning mounting vertical plate, which is fixedly connected to the side plate, a gun cleaning gear upper plate is fixedly provided on the gun cleaning mounting vertical plate, a gun cleaning gear baffle is fixedly provided on one side of the gun cleaning gear upper plate, a fifth gear is rotatably provided in the gun cleaning gear baffle, a gun cleaning sleeve is coaxially fixed on the fifth gear, and the fifth gear is transmission-connected to the third gear through a transition gear; it also includes a positioning mechanism, which includes a sensor mounting seat, which is fixedly connected to the top plate, and an optical fiber sensor is provided on the sensor mounting seat.

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