CN110919228A

CN110919228A - Automatic welding production line for air conditioner chassis

Info

Publication number: CN110919228A
Application number: CN202010008748.1A
Authority: CN
Inventors: 史春雷; 张力; 牛振华; 李耀; 杜志新
Original assignee: Anyang Hao Rui Robot Co Ltd
Current assignee: Anyang Hao Rui Robot Co Ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-03-27
Anticipated expiration: 2040-01-06
Also published as: CN110919228B

Abstract

Air conditioner chassis automatic weld production line carries positioner, footing feeding system, spot welding device and control system including screw feeding system, chassis, screw feeding system include the vibration dish, the vibration dish is connected to control system, chassis carry positioner constitute by conveyor and positioner, footing feeding system includes footing pay-off finishing device and footing and moves and carry loading attachment, spot welding device including setting up 7 thick positioning station departments in the front many spot welders, wherein count second to fourth thick positioning station department in the past and respectively be provided with a screw spot welder, and every station both sides of fifth to seventh thick positioning station department respectively set up a footing spot welder, and each spot welder all is connected on the triaxial moving system. The invention realizes the automatic welding of the screw and the bottom foot in the production of the air conditioner chassis.

Description

Automatic welding production line for air conditioner chassis

Technical Field

The invention relates to automatic generating equipment of an air conditioner, in particular to an automatic welding production line of an air conditioner chassis, and belongs to the technical field of automatic equipment.

Background

The air conditioner chassis is a component for installing a compressor and installing and fixing an air conditioner in the production of the air conditioner, in the manufacturing of the air conditioner, three screws for fixing the compressor are fixedly welded on the chassis by adopting a spot welding machine, two feet are welded on the chassis after the screws are welded, two or three spot welding points are arranged between each foot and the chassis, the welding of the screws and the feet on the current air conditioner chassis is basically carried out manually, the welding is usually realized locally in time, if the three screws are automatically welded in sequence, but the number of personnel required to be configured in the production is not reduced, when the chassis screws are welded, three screw holes are reserved in the current chassis during the manufacturing, the three screw holes are positioned on the same circle, the screws with the matched models penetrate into the three screw holes during the spot welding operation, and then the screws and the chassis are fixed together after the spot welding by the spot welding machine, the current air conditioner chassis is produced manually, on one hand, the function is realized without the automatic equipment at present, on the other hand, the difficulty in developing the equipment with the function is high, the air conditioner models produced by factories are more, the positions of screw holes of chassis in different models are different, so that one set of equipment is difficult to meet the requirements of producing air conditioners in various models, the screws can be completely sequenced by using a vibrating disc in many occasions in the current production, the sequenced screws can be sequenced in front and back sequence according to design requirements, but how to accurately enter the sequenced screws into three screw holes on the chassis, the automatic adjustment of the sequenced screws on the current equipment can not be realized according to the chassis in different models during feeding, the screws are required to be spot-welded on a spot welding machine after being fed into the screw holes, the current air conditioner chassis screw welding is also carried out manually, however, with the increase of labor cost and uncertainty in various aspects brought by manual operation in production practice, it is a necessary development hand to develop automatic welding equipment for air conditioner chassis screws, feet are welded after screws are welded, the feet are welded by a spot welding machine, the feet have requirements on directionality and coincidence of front and back surfaces on a chassis, at present, foot supplied materials are directly boxed after being stamped, are stacked in multiple layers in a material box, and are randomly formed in direction and front and back surfaces, so that no rule exists, if the automatic welding of the chassis is to be realized, automatic feeding and sorting of the chassis are basic operation, and at present, no mature equipment in the aspect can be directly applied. The front side, the back side and the direction must be correctly placed during welding of the footing and the chassis, the judgment is carried out by naked eyes of workers in the current welding operation, and the judgment of the front side, the back side and the direction by naked eyes is not a difficult problem in welding due to the fact that the difference between the front side, the back side and the two directions of the footing is large. The problem in welding is that at present, no mechanized automatic welding equipment can be provided, and automatic welding firstly requires the standard feeding and also requires the real-time adjustment according to different types of feet. The problems are solved well, the efficient and accurate welding of the air conditioner chassis can be realized, the effects of reducing labor cost and improving production efficiency are realized, and mature production equipment is not available at home at present.

Disclosure of Invention

The invention aims to overcome the problems existing in the existing spot welding of the air conditioner chassis and provides an automatic welding production line of the air conditioner chassis.

In order to realize the purpose of the invention, the following technical scheme is adopted: an automatic welding production line of an air conditioner chassis comprises a screw feeding system, a chassis conveying and positioning device, a footing feeding system, a spot welding device and a control system,

the screw feeding system comprises a vibrating disc, the vibrating disc is connected to a control system, the vibrating disc is in one group or multiple groups, the number of each group is 3, the tail end of the vibrating disc is provided with a crack track, sequenced screws are hung in the crack track, a cutting disc is rotatably arranged on a feeding frame in the tail end of each crack track, the tail end of each crack track is positioned at the edge of the cutting disc, one group or multiple groups of blanking holes are formed in the cutting disc, each group of blanking holes consists of 3 blanking holes which are uniformly distributed, a blanking slit which passes through the blanking holes is formed in the edge of the cutting disc, a rotation driving device is connected onto the cutting disc and drives the cutting disc to rotate back and forth, when the cracks are communicated with the blanking slits, the rotation driving device drives the cutting disc to rotate, the screws finally enter the blanking holes from the blanking slit, multiple groups of blanking pipes are arranged on a feeding rack below the cutting disc, each group of blanking pipes consists of 3 blanking pipes which are uniformly distributed, the positions of the blanking pipes correspond to the positions of blanking holes after a blanking disc carries a screw to rotate up and down, 3 material supporting pipes which are positioned on the same circumference are arranged below the blanking pipes, each blanking pipe in each group of blanking pipes is connected to one material supporting pipe through a blanking hose, a material supporting device is arranged in the material supporting pipe close to the outlet of the screw or is arranged below the material supporting pipe, a cylinder frame is fixedly connected to each material supporting pipe, an upper cylinder and a lower cylinder are fixedly connected to the cylinder frame, a clamping jaw cylinder is connected to a cylinder rod of the upper cylinder and the lower cylinder, a clamping jaw hole of the clamping jaw cylinder is positioned below the material supporting pipe, a diameter adjusting mechanism is arranged in a matching way with the material supporting pipe and comprises a diameter adjusting plate, the diameter adjusting plate is uniformly distributed on the diameter adjusting plate and is provided with a plurality of cam-shaped strip holes, the material supporting pipes are inserted into the strip-, the diameter adjusting frame is fixedly connected with a radial guide plate, the radial guide plate is provided with a radial guide groove, each material supporting pipe is arranged in the guide groove in a sliding manner in a radial direction in a matching manner or in the guide groove in a sliding manner in a radial direction through a guide block, and the rotary driving device, the rotary power driving device and each air cylinder are controlled by a control system;

the chassis conveying and positioning device consists of a conveying device and a positioning device, the chassis conveying device comprises a plate chain conveyor, a plurality of groups of material pushing blocks are arranged on a plate chain of the plate chain conveyor at intervals, each group of material blocking blocks consists of two material pushing blocks in the left-right direction, and the material pushing blocks are fixedly connected with the plate chain; the material pushing block pushes the chassis to move forward; the positioning device comprises 7 sets of coarse positioning mechanisms which are distributed at least in the front-back direction, 1 set of fine positioning mechanism is arranged at the position of the most front coarse positioning mechanism in a matched mode, each coarse positioning mechanism comprises four coarse positioning cylinders positioned on two sides of the chassis, two of the four coarse positioning cylinders are in the left-right direction, and two of the four coarse positioning cylinders are in the front-back direction; the two thick positioning rods are close to two corners close to the rear part of the chassis; the precise positioning mechanism comprises three positioning columns positioned on the same circle, the upper ends of the positioning columns are conical, the three positioning columns are respectively connected to cylinder rods of precise positioning cylinders in three vertical directions, the three precise positioning cylinders are limited on the diameter-changing mechanism, the diameter-changing mechanism comprises a diameter-changing disc, three cam holes are formed in the diameter-changing disc, a cylindrical insert column is arranged at the lower part of each precise positioning cylinder, each precise positioning cylinder is inserted into the cam hole through the insert column, radial sliding blocks are connected to the insert columns and are arranged in corresponding radial grooves in a sliding manner, long holes for the insert columns to pass through are formed in the bottom surfaces of the radial grooves, the bottom surfaces of the sliding blocks are supported on the bottom surfaces of the radial grooves, the three radial grooves are fixedly connected to the positioning frame, a diameter-changing driving shaft is fixedly connected to the center of the diameter-changing disc, the diameter-changing driving shaft is rotatably connected with the positioning frame, and a diameter-changing motor, the bottom of the positioning frame is rotationally connected to the base through a positioning frame shaft; three positioning columns in the fine positioning mechanism are vertically opposite to the three material supporting pipes;

the footing feeding system comprises a footing feeding sorting device and a footing transferring and feeding device, the footing feeding sorting device comprises two footing left and right conveying belts moving in the left and right directions, the tail ends of the two footing left and right conveying belts are connected with footing front and rear conveying belts moving in the front and rear directions, the footing front and rear conveying belts are positioned above the chassis conveying and positioning device, a footing absorbing and feeding device is arranged in front of the footing left and right conveying belts, a visual identification camera, a footing turning device and a footing horizontal 180-degree rotating device are arranged on the footing front and rear conveying belts, the footing absorbing and feeding device comprises a plurality of floating adsorption heads distributed in rows and columns, the upper ends of the floating adsorption heads are fixedly connected to a mounting plate, the mounting plate is connected to a three-axis moving system controlled by a control system, the floating adsorption heads comprise floating rods, and electromagnets are fixedly connected to the lower ends, a flange is arranged on the floating rod close to the lower part, a return spring penetrates through the floating rod on the upper part of the flange, a limiting edge is arranged inside the lower opening of the sliding sleeve, the floating rod penetrates through the sliding sleeve in a vertical sliding mode, the flange is limited on the limiting edge, the sliding sleeve is fixedly connected in the fixed sleeve, an upper spring limiting part is fixedly arranged on the upper part of the return spring, an unthreaded hole is formed in the fixed sleeve, when the lower part of the electromagnet is not subjected to upward force, the upper end of the floating rod is positioned on the lower part of the unthreaded hole, when the lower part of the electromagnet is subjected to upward force, the floating rod compresses the return spring to move upwards, the floating rod blocks the unthreaded hole, the unthreaded holes in each floating adsorption head are positioned at the same height, an emitting electrode and a receiving electrode of an emission switch are respectively arranged at the positions corresponding to the unthreaded holes; the footing front and back conveying line comprises a plurality of sections of footing front and back conveying belts moving in the front and back direction, a footing turning device and a footing horizontal 180-degree rotating device are arranged between two adjacent sections of footing front and back conveying belts, a vision recognition camera is arranged above the conveying line at the position of the footing turning device or the footing horizontal 180-degree rotating device or arranged above the conveying line in front of the footing turning device and the footing horizontal 180-degree rotating device, the footing turning device comprises an upper rotating cylinder and a lower rotating cylinder which are fixedly connected on a frame, the rotating shaft of the upper rotating cylinder and the lower rotating cylinder is in the horizontal left and right direction, a clamping mechanism is fixedly connected on the upper rotating cylinder and the lower rotating cylinder, the clamping mechanism comprises a clamping cylinder which is fixedly connected on the output of the rotating cylinder, a right-angle plate is fixedly connected on the cylinder body of the, a clamping plate is fixedly connected to a cylinder rod of the clamping cylinder, and the footing horizontal 180-degree rotating device comprises a finger clamping jaw cylinder; the finger clamping jaw cylinder is connected to the output of the horizontal rotating cylinder, the horizontal rotating cylinder is connected to the output of the footing rotating lifting cylinder, the rotating shaft of the horizontal rotating cylinder is in the numerical direction, and the footing passes through the middle of the two clamping jaws of the finger clamping jaw cylinder; a feeding detection switch is arranged on the conveying line in front of the footing turning device, and each cylinder and the vision recognition camera are connected to a control system;

the bottom foot transferring and loading device comprises two three-axis transferring and loading devices which are arranged at the tail ends of a front conveying line and a rear conveying line in a matched mode, two electromagnet material sucking heads are connected to the three-axis transferring and loading devices, baffle plates are arranged at the tail ends of the front conveying line and the rear conveying line, a bottom foot posture correcting cylinder is arranged on the side face of the conveying line in front of the baffle plates, a correcting push plate in the left-right direction is connected to a cylinder rod of the correcting cylinder, and a bottom foot detecting switch is arranged;

the spot welding device comprises a plurality of spot welding machines arranged at the front 7 coarse positioning stations, wherein one screw spot welding machine is respectively arranged at the positions from the second coarse positioning station to the fourth coarse positioning station counted from the front, and three screw spot welding machines are distributed at three stations at one side of the production line in the front and back direction; and two sides of each station at the fifth to seventh coarse positioning stations are respectively provided with a base pin spot welding machine, six base pin spot welding machines are distributed on three stations behind the screw spot welding machine, and each spot welding machine is connected on the three-axis motion system.

Further, the method comprises the following steps of; the diameter adjusting frame is rotatably connected onto the base through a diameter adjusting shaft, the base is fixedly connected onto the plane two-shaft moving mechanism A, a driving diameter adjusting frame driving motor for driving the diameter adjusting frame to rotate is arranged on the base, the base in the fine positioning mechanism is connected onto the plane two-shaft moving system B, the plane two-shaft moving mechanism adopts a sliding table mechanism driven by a lead screw, and a positioning frame shaft driving motor for driving the positioning frame shaft to rotate is arranged on the base.

Further, the method comprises the following steps of; the number of the vibrating discs is 2, the vibrating discs in the two groups are alternately arranged, the material passing seams are 6, the rotating driving device is a material cutting disc driving cylinder, one end of the material cutting disc driving cylinder is hinged on the rack, the end of a cylinder rod is connected with a joint bearing, and a shaft connected with the material cutting discs penetrates through the joint bearing; the material conveying device comprises two groups of discharging pipes, Y-shaped tee joints are arranged at the upper ends of material supporting pipes, every two discharging pipes in different groups are communicated with the same material supporting pipe through the Y-shaped tee joints by using hoses, a material passing seam is arc-shaped, the upper opening of each discharging pipe is a horn-shaped opening with a large upper part and a small lower part, a plurality of grooved wheels are arranged on the periphery of a material cutting disc, and material cutting sheets are located in grooves of the grooved wheels.

Further, the method comprises the following steps of; the rotary driving power device connected to the diameter adjusting plate is a diameter adjusting motor, a central shaft is fixedly connected to the center of the diameter adjusting plate, the diameter adjusting motor directly drives the central shaft or drives the central shaft through a transmission mechanism, and the transmission mechanism comprises belt transmission, gear transmission and chain transmission.

Further, the method comprises the following steps of; the material supporting device is a multi-petal elastic sheet, a screw through hole is formed in the middle of the multi-petal elastic sheet, when a screw falls down, a rod part penetrates through the through hole, and a head part falls on the elastic sheet, and the material supporting device is arranged in a material supporting pipe or arranged in the following mode: the cylinder frame is fixedly connected to the lower end of the material supporting pipe, a material passing hole communicated with the material supporting pipe is formed in the cylinder frame, and the material supporting device is arranged in the material passing hole.

Further, the method comprises the following steps of; the support material device include along circumference evenly distributed's at least three marble, seted up the marble hole on the pore wall of screw whereabouts route, the marble mouth is close to and holds in the palm material pipe lower extreme, the diameter in marble hole be less than the diameter of marble along the radial axle in marble hole, the radial outside top of marble is equipped with the spring, the bolt that connects in the marble hole through revolving in the spring outer end compresses tightly, when the screw fell down, the pole portion passed from the hole between the three marble, the head fell on the marble, the marble be spherical or ellipsoid shape.

Further, the method comprises the following steps of; a material sensing photoelectric switch is mounted on the machine frame near the tail end of the crack track and connected to the control system, a magnetic switch is arranged on the clamping jaw air cylinder, and the magnetic switch is connected to the control system.

Further, the method comprises the following steps of; the feeding device also comprises a distributing device, the vibrating disc distributing device comprises a main vibrating disc machine, the main vibrating disc machine is positioned above the vibrating discs, a hopper with three distributing holes at the bottom is arranged below a discharging channel of the main vibrating disc machine, the hopper is divided into three parts by three spacers, a material distribution hole is arranged between every two spacers, the hopper is connected with the output of a material distribution motor, a blanking chute is arranged below the blanking hole of the hopper, a baffle is arranged between every two blanking chutes and is positioned between the two blanking chutes, the baffle and the blanking chutes are fixedly connected on a conversion frame, the conversion frame is rotationally connected on a shaft taking the center of the hopper as an axis, the conversion frame is connected with a rotation driving device, the rotation driving device drives the conversion frame to rotate, and then the outlet of the discharging chute is switched to be connected with the inlets of the other group of 3 vibration discs.

Further, the method comprises the following steps of; the rear ends of two coarse positioning cylinders on one side of the chassis are hinged to the frame, the rear portion of the coarse positioning rod is V-shaped, the coarse positioning rod is rotatably connected to the frame, the rear ends of the two coarse positioning cylinders on the other side of the chassis are hinged to the adjusting plate, the adjusting plate is slidably connected to the frame in the left-right direction, the coarse positioning rod on the side is rotatably connected to the adjusting plate, a rack is fixedly connected to the adjusting plate and provided with a gear in a matched mode with the rack, and the gear is connected to an output shaft of an adjusting plate adjusting motor.

Further, the method comprises the following steps of; the three-axis transfer device is characterized in that a main sliding block and an auxiliary sliding block are arranged on a sliding rail at the tail end of the three-axis transfer device in a sliding mode, the main sliding block is driven by a driving system in the three-axis transfer device, two electromagnet suction heads are fixedly connected to the sliding blocks through mounting frames respectively, one of the two mounting frames is fixedly connected with a cylinder body of an electromagnetic suction head adjusting cylinder, and the other mounting frame is fixedly connected with a cylinder rod of the electromagnetic suction head adjusting cylinder.

The automatic welding machine realizes the automatic welding of the screw and the bottom foot in the production of the air conditioner chassis, and effectively saves manpower and material resources.

Drawings

Fig. 1 is an overall schematic view of the present invention.

FIG. 2 is a schematic view of one orientation of the screw feed system.

FIG. 3 is a schematic view of another orientation of the screw feed system.

Fig. 4 is a schematic view of the screw feeding system from above.

Fig. 5 is a schematic view of the screw feeder system from above with the overall vibratory pan machine process removed.

Fig. 6 is a partial schematic view of the lower portion of the blanking tray of the screw feeding system.

FIG. 7 is a partial schematic view of the screw feeder system with a portion of the housing of the vibratory pan section removed.

Fig. 8 is a schematic view of the lower half of the screw feeding system.

Fig. 9 is a bottom schematic view of the bottom of the screw feeder system.

Fig. 10 is a schematic view of a gage plate.

Fig. 11 is a schematic view of one of the material supporting devices.

One of the schematic views of the positioning device in the front part of fig. 12.

Fig. 13 is a schematic view of the inner part of the positioning device from the outside.

Fig. 14 shows a second schematic view of the positioning device at the front.

FIG. 15 is one of the schematic views of the fine positioning mechanism.

Fig. 16 is a second schematic view of the fine positioning mechanism.

Figure 17 is a schematic view of the front of the footing feed system.

Fig. 18 is a perspective schematic view of a floating adsorption head.

Fig. 19 is a schematic diagram of a correlation switch connection.

Figure 20 is a schematic view of a footing turning device and footing horizontal 180 degree rotating device.

FIG. 21 is a schematic view of a foot transfer loading position.

Fig. 22 is a schematic view of the lower part of a three-axis transfer device.

Detailed Description

In order to more fully explain the implementation of the present invention, examples of the implementation of the present invention are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The triaxial that involves in this application all indicates X, Y, Z three direction belt drive's moving system, and this is the common actuating system in present machinery, can select lead screw drive, rack and pinion drive, belt drive according to the required precision, does not describe again to each triaxial that involves in this application.

The invention is explained in further detail in connection with the accompanying drawings, in which: : 101: a feeding frame; 102: a total vibration pan machine; 103: a hopper; 104: a blanking chute; 105, vibrating the disc; 106: a planar biaxial movement mechanism; 107: cutting a material plate; 108: a discharging pipe; 109: a discharge channel of the total vibration disc machine; 110: a cloth motor; 111: a material distribution hole; 112: a baffle plate; 113: a spacer; 114: a crack track; 115: a blanking hole; 116: passing a material seam; 117: a bell mouth; 118: a grooved wheel; 119: the conversion frame rotates to drive the air cylinder; 120: a rotating frame; 121: a conversion frame; 122: the material cutting disc drives the air cylinder; 123: a knuckle bearing; 124: a Y-shaped tee joint; 125: a diameter adjusting plate; 126: a strip-shaped hole; 127: a material supporting pipe; 128: a cylinder frame; 129: an upper cylinder and a lower cylinder; 130: a clamping jaw cylinder; 131: a diameter-adjusting motor; 132: a synchronizing wheel connected with the central shaft of the diameter adjusting plate; 133: a synchronous belt driven by a diameter adjusting motor; 134: a base; 135: a diameter adjusting frame driving motor; 136: the diameter adjusting frame is rotatably connected with the base through a diameter adjusting frame shaft; 137: the diameter adjusting frame drives a synchronous belt driven by a motor; 138: a diameter adjusting frame; 139: a spring plate; 140: contour lines of the cam-shaped strip-shaped holes; 141: a marble; 142: a spring; 143: a bolt; 144: a hole through which the screw passes; 145: a guide plate; 146: a guide groove; 147: a guide block; a; 201: a planar biaxial movement mechanism B; 202: a coarse positioning cylinder A; 203: a coarse positioning cylinder B; 204: an angle iron-shaped positioning plate I; 205: a coarse positioning cylinder C; 206: a coarse positioning cylinder D; 207: a second angle iron-shaped positioning plate; 208: a frame of the positioning mechanism; 209: a first coarse positioning rod; 210: a second coarse positioning rod; 211: a drive plate; 212: an adjustment plate; 213: a rack; 214: a gear; 215: adjusting the motor; 216: a guide rail; 217: a fine positioning cylinder; 218: a positioning column; 210: a variable diameter disk; 220: a cam hole; 221: a radial slot; 222: a guide block; 223: inserting a column; 224: a long hole; 225: a positioning frame; 226: a variable diameter motor; 227: a synchronizing wheel connected with the reducing driving shaft; 228: a base; 229: a positioning frame shaft driving motor; 301: a screw spot welder A; 302: a screw spot welder B; 303: a screw spot welder C; 401: a plate chain conveyor; 402: a material pushing block; 501: a chassis; 601: a floating adsorption head; 602: mounting a plate; 603: a three-axis mobile system; 604: a footing turnover device is arranged; 605: a 180-degree rotating device with a horizontal foot; 606: a bottom feeding frame; 607: a material box; 608: a left conveying belt A and a right conveying belt A; 609: a left and a right conveyor belts B; 610: a front and a rear conveyor belt A; 611: a front and rear conveyor belt B; 612: a visual recognition camera; 613: a gantry; 614: a three-axis transfer device; 615: a striker plate; 616: a footing posture correcting cylinder; 617: correcting the push plate; 618: a tail end slide rail; 619: a main slider; 620: a sub slider; 621: the mounting frame is connected with the main sliding block; 622: the mounting frame is connected with the auxiliary sliding block; 623: an electromagnetic suction head adjusting cylinder; 624: an electromagnetic suction head; 6011: an electromagnet; 6012: a floating rod; 6013: a sliding sleeve; 6014: a flange; 6015: a return spring; 6016: an upper spring positioning portion; 6017: fixing a sleeve; 6018: a light hole; 6019: an emitter; 6010: a receiver electrode; 6041: an up-down rotating cylinder; 6042: a material clamping cylinder; 6043: a right-angle plate; 6044: a material clamping plate; 6051: the bottom foot rotates the lifting cylinder; 6052: a horizontal turning cylinder; 6053: a finger grip cylinder; 701: footing; 801: a first set of footing spot welders; 802: a second set of footing spot welders; 803: and a third group of footing spot-welding machines.

As shown in the attached drawing, the automatic welding production line of the air conditioner base plate comprises a screw feeding system, a base plate conveying and positioning device, a footing feeding system, a spot welding device and a control system,

the screw feeding system comprises a feeding rack 101 and further comprises a vibration disc 105, the vibration disc is shown as a vibration disc, the vibration disc is connected to the control system, the vibration disc is of one group or multiple groups, the number of each group is 3, a crack track is arranged at the tail end of the vibration disc, the crack track is shown as 114, and sequenced screws are hung in the crack track.

A cutting disc 107 is rotatably arranged on the rack in the tail end of each crack track, a plurality of grooved wheels 118 are arranged on the periphery of the cutting disc, the cutting disc is positioned in the grooves of the grooved wheels, the tail end of each crack track is positioned at the edge of the cutting disc, one or more groups of blanking holes are formed in the cutting disc, each group of blanking holes consists of 3 blanking holes which are uniformly distributed, 115 is a blanking hole, a material passing seam which passes through the blanking hole is formed in the edge of the cutting disc, 116 is a material passing seam, and the material passing seam is arc-shaped. In this embodiment, the number of the vibration disks is 2, the vibration disks in the two groups are alternately arranged, and the material passing seams are 6. The material sensing photoelectric switch is mounted on the machine frame near the tail end of the crack track, connected to the control system and commonly used for detecting materials, and is widely applied and not shown in the drawing.

The material cutting disc is connected with a rotation driving device, the rotation driving device drives the material cutting disc to rotate back and forth, in the embodiment, the rotation driving device is a material cutting disc driving cylinder, 122 is a material cutting disc driving cylinder, one end of the cylinder is hinged on the rack, the end of a cylinder rod is connected with a joint bearing 123, and a shaft connected with the material cutting disc penetrates through the joint bearing; when the crack is communicated with the material passing crack, the rotary driving device drives the material cutting disc to rotate, and the screw finally enters the blanking hole 115 through the material passing crack 116. In the embodiment, 2 groups of 6 vibration discs are arranged, only one group of vibration discs works when working, the air cylinder can cut in screws from the crack tracks of the group of vibration discs to enter corresponding material passing cracks when advancing, and the air cylinder does not cut materials when retracting. When the vibrating discs are switched to another group, the air cylinders are changed to cut the screws into the corresponding overfeeding seams from the crack tracks of the corresponding vibrating discs when retracted, and no material is cut when advanced.

The blanking device is characterized in that a plurality of groups of blanking pipes are arranged on the rack below the blanking disc, in the embodiment, 2 groups of blanking pipes are arranged, each group of blanking pipes is composed of 3 blanking pipes which are uniformly distributed, in the figure, 108 the blanking pipes are arranged, the upper openings of the blanking pipes are horn mouths with large upper parts and small lower parts, 117 the horn mouths are shown, and the positions of the blanking pipes correspond to the positions of the blanking holes of the blanking disc which carries the screws to rotate up and down.

3 material supporting pipes which are positioned on the same circumference are arranged below the discharging pipes, 127 is shown as the material supporting pipes, the upper ends of the material supporting pipes are provided with Y-shaped tee joints, 124 is shown as the Y-shaped tee joints, and every two discharging pipes in different groups are communicated with the same material supporting pipe through the Y-shaped tee joints by using hoses. The hose can be an elastic hose, which is a common material and is not shown in the figures. Each blanking pipe in each group of blanking pipes is connected to one material supporting pipe through a blanking hose.

A material supporting device is arranged in the material supporting pipe close to the screw outlet or below the material supporting pipe. The material supporting device can be one of the following two types: one is that: the material supporting device is a multi-petal elastic sheet, 139 is an elastic sheet, a screw through hole is formed in the middle of the multi-petal elastic sheet, when a screw falls down, a rod part penetrates through the through hole, and a head part falls on the elastic sheet, the material supporting device is arranged in a material supporting pipe or is arranged in the following mode: the cylinder frame 128 is fixedly connected with the lower end of the material supporting pipe, a material passing hole communicated with the material supporting pipe is formed in the cylinder frame, and the material supporting device is arranged in the material passing hole. As shown in fig. 8, in this embodiment, the elastic sheet is installed in the material passing hole. The other is as follows: the support material device include along at least three marble of circumference evenly distributed, 141 shows to be the marble, has seted up the marble hole on the pore wall that the screw whereabouts was passed through, 144 shows to be the hole that the screw whereabouts was passed through, the marble mouth is close to and holds in the palm the material pipe lower extreme, the diameter in marble hole be less than the marble along the diameter of the radial axle in marble hole, the radial outside top of marble is equipped with spring 142, the spring outer end compresses tightly through the bolt 143 of swivelling joint in the marble hole, when the screw fell down, the pole portion passed from the hole between the three marble, the head fell on the marble, the marble be spherical or ellipsoid shape. When the marble is in an ellipsoid shape, the aperture of the marble hole is smaller than the length of the short axis of the ellipsoid.

The material supporting pipes are fixedly connected with a cylinder frame 128, the cylinder frame is fixedly connected with an upper air cylinder 129 and a lower air cylinder 129, cylinder rods of the upper air cylinder and the lower air cylinder are connected with clamping jaw air cylinders 130, clamping jaw holes of the clamping jaw air cylinders are located below the material supporting pipes, and the clamping jaw air cylinders are provided with magnetic switches which are connected to a control system. The magnetic switch can be used for detecting the stroke of the clamping jaw air cylinder, and when the clamping jaw air cylinder clamps the screw, the stroke is different from that when the clamping jaw air cylinder does not clamp the screw, so that whether the clamping jaw air cylinder clamps the screw or not can be judged according to a magnetic switch signal.

The diameter adjusting mechanism is matched with the material supporting pipe and comprises a diameter adjusting plate 125, a plurality of cam-shaped strip-shaped holes are uniformly distributed on the diameter adjusting plate, 126 is a cam-shaped strip-shaped hole, the peripheral contour line of a cam-shaped hole finger hole is a cam taking the diameter adjusting plate as the center, 126 is a cam-shaped strip-shaped hole, 140 is a peripheral contour line of a cam-shaped strip-shaped hole, the material supporting pipe is inserted in the cam-shaped strip-shaped hole, the diameter adjusting plate is rotatably arranged on a diameter adjusting frame 138 and is connected with a rotary driving power device, the rotary driving power device connected with the diameter adjusting plate is a diameter adjusting motor, 131 is a diameter adjusting motor, the center of the diameter adjusting plate is fixedly connected with a center shaft, a synchronizing wheel connected with the center shaft of the diameter adjusting plate 132, the diameter adjusting motor directly drives the center shaft or drives the center shaft through a transmission mechanism, and the transmission mechanism can also be a belt transmission mechanism, Gear drive, chain drive, adopt hold-in range and synchronous pulley drive in this embodiment. As shown in the figure, a diameter adjusting motor drives a central shaft to rotate and adjust through a synchronous belt driven by the diameter adjusting motor, the diameter adjusting motor drives a diameter adjusting plate to rotate through the rotation of the driving central shaft, three material supporting pipes synchronously move inwards or outwards in the radial direction of a circle taking the diameter adjusting plate as the center under the action of a cam-shaped strip-shaped hole, the three material supporting pipes are always positioned on the circle taking the center of the diameter adjusting plate as the center of a circle during or after adjustment,

the diameter adjusting frame 138 is fixedly connected with a radial guide plate 145, the radial guide plate is provided with a radial guide groove 146, each material supporting pipe is arranged in the guide groove in a matched and radial sliding mode or is arranged in the guide groove in a radial sliding mode through a guide block, and the rotary driving device, the rotary power driving device and each air cylinder are controlled through a control system. In this embodiment, each material supporting pipe is connected with a guide block 147, the guide blocks are slidably arranged in the guide grooves, and the lower surfaces of the guide blocks are supported on the bottom surfaces of the guide grooves. The diameter-adjusting frame 138 is rotatably connected to the base 134 through a diameter-adjusting frame shaft, the base is fixedly connected to the plane two-axis moving mechanism a106, and a diameter-adjusting frame driving motor 135 for driving the diameter-adjusting frame to rotate is arranged on the base.

More preferably, the feeding device further comprises a distributing device, the distributing device comprises a total vibrating disk machine 101, the total vibrating disk machine is located above each vibrating disk, a hopper 103 with three distributing holes at the bottom is arranged below a discharging channel 109 of the total vibrating disk machine, the hopper is internally divided into three parts by three spacers 113, a distributing hole 111 is arranged between every two spacers, the hopper is connected to the output of a distributing motor 110, a discharging chute 104 is arranged below the discharging hole of the hopper, a baffle 112 is arranged between every two discharging chutes, the baffle is located between the two discharging chutes, the baffle and the discharging chutes are fixedly connected to a conversion frame 121, the conversion frame 121 is rotatably connected to a shaft with the center of the hopper as the axis, a rotation driving device is connected to the conversion frame, after the rotation driving device drives the conversion frame to rotate, the outlet of the discharging chute is switched to be connected with the inlets of another group of 3 vibrating disks, in this embodiment, the rotation driving device employs a switching cylinder 119; one end of the conversion cylinder is hinged to the feeding rack, the other end of the conversion cylinder is hinged to the rotating frame 120, the rotating frame is rotatably connected to the feeding rack, and the conversion frame is fixedly connected with the rotating frame.

The chassis conveying and positioning device comprises a conveying device and a positioning device, the chassis conveying device comprises a plate chain conveyor 401, a plurality of groups of material pushing blocks are arranged on a plate chain of the plate chain conveyor at intervals, 402 are material pushing blocks, each material blocking block is composed of two material pushing blocks in the left and right directions, the material pushing blocks are fixedly connected with the plate chain, when the plate chain conveyor acts, the material pushing blocks push the chassis to move forward, and the plate chain conveyor is connected to a control system to control. The chassis is pushed to advance through the material pushing block on the plate chain conveyor, so that stepping material pushing of each station is realized, the friction force between the plate chain and the chassis is not used for driving the chassis to advance, the plate chain conveyor can be manually fed, a robot can also be adopted, and the conveying belt can be provided with a material pushing device for pushing the chassis onto the plate chain conveyor.

The positioning device is composed of 7 sets of coarse positioning mechanisms and 1 set of fine positioning mechanism which are distributed at least in the front-back direction, the foremost set of the 4 sets of coarse positioning mechanisms is matched with the fine positioning mechanism and is used for accurately inserting screws into screw holes on the chassis, the three sets of the 4 sets of coarse positioning mechanisms are used for positioning during spot welding of three screws, the 4 sets of coarse positioning mechanisms are identical, and only the foremost set of coarse positioning mechanism is described in detail in combination with the drawing.

The coarse positioning mechanism comprises four coarse positioning cylinders positioned on two sides of the chassis, wherein the four coarse positioning cylinders are a coarse positioning cylinder A shown by 202, a coarse positioning cylinder B shown by 203, a coarse positioning cylinder C shown by 205 and a coarse positioning cylinder D shown by 206 in the figure; in the figure, two of the four coarse positioning cylinders are in the left-right direction and two are in the front-back direction, the coarse positioning cylinder A and the coarse positioning cylinder C are in the front-back direction, the coarse positioning cylinder B and the coarse positioning cylinder D are in the left-right direction, the cylinder rods of the two coarse positioning cylinders in the left-right direction are connected with angle iron-shaped positioning plates, in the figure, a first angle iron-shaped positioning plate and a second angle iron-shaped positioning plate are respectively connected on the cylinder rods of a coarse positioning cylinder B and a coarse positioning cylinder D, the cylinder rod ends of the two coarse positioning cylinders in the front and back directions are hinged on a driving rod, the figure 211 shows a driving rod, the coarse positioning mechanism is provided with a coarse positioning rod, the figures 209 and 210 show two coarse positioning rods, the rear ends of the coarse positioning rods are all hinged on the driving rod, the coarse positioning rods in the coarse positioning mechanisms are all hinged on the same driving rod, the coarse positioning rod is rotationally arranged, and two angle iron-shaped positioning plates in each set of coarse positioning mechanism are close to two corner parts at the front part of the chassis; the two thick locating rods are close to two corners close to the rear part of the chassis. The rear portion of thick locating lever be the V-arrangement, thick positioning mechanism in two thick location cylinder rear ends that lie in chassis one side articulate in the frame, thick locating lever rotates and connects in the frame, lie in two thick location cylinder rear ends of chassis opposite side and articulate on adjusting plate 212, adjusting plate 212 left right direction sliding connection in the frame, in this embodiment, adjusting plate passes through guide rail 216 left and right sliding connection in the frame, the thick locating lever of this side rotates and connects on adjusting plate 212, fixedly connected with rack 213 on adjusting plate, be provided with gear 214 with the rack cooperation, gear connection is on adjusting plate adjustment motor 215's output shaft.

The fine positioning mechanism is arranged at the foremost coarse positioning mechanism in a matched mode and comprises three positioning columns located on the same circle, 223 shows a positioning column, the upper ends of the positioning columns are conical, the conical shapes are shown in figures 14 and 15, the three positioning columns are respectively connected to cylinder rods of three fine positioning cylinders in the vertical direction, the three positioning columns in the fine positioning mechanism are opposite to three material supporting pipes in the vertical direction, 217 shows a fine positioning cylinder, the three fine positioning cylinders are limited on the diameter changing mechanism, the diameter changing mechanism comprises a diameter changing disc 219, three cam holes 220 are formed in the diameter changing disc, different names are designated for distinguishing, the contour line of the circumferential surface of each cam hole is a cam taking the diameter changing disc as the center, the cam holes have the same meaning as the cam-shaped strip-shaped holes, the contour line of the circumferential surface of each cam hole is also shown as 140, a cylindrical insertion column is arranged at the lower parts of the three fine positioning cylinders, 223 denotes an insert column, each fine positioning cylinder is inserted into a cam hole through the insert column, a radial slider is connected to the insert column, 222 denotes a radial slider, each radial slider is slidably arranged in a corresponding radial groove, 221 denotes a radial groove, three radial grooves are arranged above a variable diameter disc, a long hole 224 for the insert column to pass through is arranged on the bottom surface of the radial groove, the bottom surface of the slider is supported on the bottom surface of the radial groove, the three radial grooves are fixedly connected to a positioning frame 225, a variable diameter driving shaft is fixedly connected to the center of the variable diameter disc, the variable diameter driving shaft is rotatably connected with the positioning frame, a variable diameter motor 226 for driving the variable diameter driving shaft to rotate is arranged on the positioning frame, 227 denotes a synchronous pulley connected to the variable diameter driving shaft, the variable diameter motor drives the variable diameter driving shaft through a synchronous pulley, when the variable diameter motor rotates, the variable diameter disc is driven to rotate, under the action of the cam hole, the three insert columns move inwards or outwards in a radial direction of, the three inserted columns are always positioned on a circle which takes the center of the reducing disc as the center of a circle when or after being adjusted, which is the reducing adjustment which can be realized by a cam hole, the bottom of a positioning frame 225 is rotationally connected on a base 228 through a positioning frame shaft, a positioning frame shaft driving motor 229 which drives the positioning frame shaft to rotate is arranged on the base, and a synchronous belt wheel can be connected on the positioning frame shaft; the positioning frame shaft driving motor 229 drives the positioning frame to rotate through a synchronous belt, a base in the fine positioning mechanism is connected to a two-axis plane moving system B201, and the two-axis plane moving mechanism adopts a sliding table mechanism driven by a lead screw.

The footing feeding system comprises a footing feeding sorting device and a footing transferring and loading device, the footing feeding sorting device comprises two footing left and right conveying belts moving in the left and right directions, and the two left and right conveying belts are respectively a left and right conveying belt A shown by 608 and a left and right conveying belt B shown by 609 in the figure; conveyer belt in this application all can adopt motor drive's belt feeder, and the conveyer belt was all linked up around the footing of the motion of fore-and-aft direction to the end about two footing, and the end of conveyer belt about two footing and the linking department of conveyer belt around the footing have decurrent inclined plane, and the footing is from about on conveyer belt slant gliding around to the conveyer belt, and the inclined plane links up understanding very easily, does not show in the picture.

The transfer chain includes the fore and aft conveyer belt of footing of the fore and aft motion of multistage around the footing, and conveyer belt B around shown in 610 is the conveyer belt around two footing on the transfer chain respectively around the footing around the picture, is provided with the footing about the footing before the conveyer belt and adsorbs loading attachment, is provided with visual identification camera, footing turning device, the 180 degrees rotary device of footing level around the footing on the conveyer belt around the footing, and the 612 shows to be the visual identification camera in the picture.

Footing absorption loading attachment including being a plurality of floating adsorption head 601 of ranks distribution, a plurality of floating adsorption head upper end fixed connection are on mounting panel 602, the mounting panel is connected on the triaxial moving system 603 of control system control, the triaxial moving system indicates the moving system of X, Y, Z three directions, the triaxial moving system is prior art commonly used in mechanical motion, specific structure is no longer repeated. The floating adsorption head include floating lever 6012, electro-magnet 6011 fixed connection is at the lower extreme of floating lever, the floating lever is close to the lower part and is provided with flange 6014, wear to be equipped with reset spring 6015 on the floating lever on flange upper portion, sliding sleeve 6013 end opening inside has spacing edge, the floating lever slides from top to bottom and wears to establish in the sliding sleeve, the flange is spacing on spacing edge, spacing edge does not show in the picture, sliding sleeve fixed connection is in fixed cover 6017, fixed being provided with on reset spring upper portion spacing portion 6016 on the spring, spacing portion can adopt the spacing cover that the centre was foraminiferous on the spring, spacing accessible screw thread connects in the sliding sleeve soon, the hole in the middle of the spacing cover is less than reset spring's radial dimension can, spacing portion understands very easily on the spring. The specific structure is not shown in the figure, an unthreaded hole 6018 is formed in the fixing sleeve, when the lower portion of the electromagnet is not subjected to an upward force, the upper end of the floating rod is located at the lower portion of the unthreaded hole, when the lower portion of the electromagnet is subjected to the upward force, the floating rod compresses the return spring to move upwards, the floating rod blocks the unthreaded hole, and the unthreaded holes in the floating adsorption heads are located at the same height, as shown in fig. 3, an emitting electrode 6019 and a receiving electrode 6010 of the correlation switch are respectively arranged at the positions, corresponding to the unthreaded holes, of the fixing sleeves of the two floating adsorption heads at the two ends of each row, and the correlation switch and the electromagnet are;

the footing front and back conveyor line comprises a plurality of sections of footing front and back conveyor belts moving in the front and back direction, each section of conveyor belt is driven by a motor, a footing turning device and a footing horizontal 180-degree rotating device are arranged between two adjacent sections of footing front and back conveyor belts, the footing horizontal 180-degree rotating device is positioned above the conveyor line at the footing turning device or the footing horizontal 180-degree rotating device, a visual recognition camera 612 is arranged above the conveyor line at the footing turning device or the footing horizontal 180-degree rotating device or in front of the footing turning device and the footing horizontal 180-degree rotating device, the footing turning device comprises an upper rotating cylinder 6041 fixedly connected to the frame, the rotating shaft of the upper rotating cylinder and the lower rotating cylinder is in the horizontal left and right direction, a clamping mechanism is fixedly connected to the upper rotating cylinder and the lower rotating cylinder, and the clamping mechanism comprises a clamping cylinder 6042, a right-angle plate 6043 is fixedly connected to the body of the clamping cylinder, the vertical surface of the right-angle plate is positioned on the opposite side of the cylinder rod of the clamping cylinder, a clamping plate 6044 is fixedly connected to the cylinder rod of the clamping cylinder, the footing turning device is used for turning the footing, and the footing horizontal 180-degree rotating device comprises a finger clamping jaw cylinder 6053; the finger clamping jaw cylinder is connected to the output of a horizontal rotating cylinder 6052, the horizontal rotating cylinder is connected to the output of a footing rotating lifting cylinder 6051, the rotating shaft of the horizontal rotating cylinder is in the vertical direction, and the footing passes through the middle of two clamping jaws of the finger clamping jaw cylinder; the horizontal 180 degrees rotary device of footing's effect is to make the footing turn around, is provided with supplied materials detection switch on the conveying line before footing turning device, and above-mentioned each cylinder and vision recognition camera all are connected to control system.

In the application, the visual recognition camera is the recognition device commonly used in the industry at present, the visual recognition camera and the software that oneself takes have the function of discerning the footing shape, after storing the image under each state of footing in the visual recognition camera, the visual recognition camera can be through shooting that the footing that passes through on the production line is that face up, that head is forward, compare according to the footing information that obtains and the information of inside storage, the footing that the accurate judgement passes through on the production line is that kind of state, then give control system the status signal of footing, control system obtains can give the state of realizing the requirement through what kind of adjustment, can obtain the selection upset, horizontal rotation or both have or both do not move and accomplish the adjustment of footing direction attribute and positive and negative attribute, realize the arrangement of footing. In a specific alternative, the visual recognition camera in the present application may adopt: the 170F host of the keyence vision, a camera with 2 500 ten thousand pixels, the vision recognition camera with a driver software, can be set in the system.

The footing shifting and loading device comprises two triaxial shifting and loading devices 13 which are arranged at the tail ends of front and rear conveying lines in a matched mode, two electromagnet material suction heads 624 are connected to the triaxial shifting and loading devices, electromagnets can be adopted as the electromagnet material suction heads, material blocking plates 615 are arranged at the tail ends of the front and rear conveying lines, a footing posture correcting air 616 cylinder is arranged on the side face of the conveying line in front of the material blocking plates, a correcting push plate 617 in the left-right direction is connected to a cylinder rod of the correcting air cylinder, and a footing detection switch is arranged at the rear end of the front and; the three-axis transfer device tail end sliding rail 618 is provided with a main sliding block 619 and an auxiliary sliding block 620 in a sliding mode, the main sliding block is driven by a driving system in the three-axis transfer device, the two electromagnetic material suction heads are fixedly connected to the sliding blocks through mounting frames respectively, and 621 shows the mounting frame connected with the main sliding block. 622, a mounting frame connected with the auxiliary sliding block is shown, one of the two mounting frames is fixedly connected with the cylinder body of the electromagnetic suction head adjusting cylinder 623, and the other mounting frame is fixedly connected with the cylinder rod of the electromagnetic suction head adjusting cylinder. The electromagnetic suction head adjusting cylinder can be used for adjusting the distance between the two suction heads.

The spot welding device comprises a plurality of spot welding machines arranged at the front 7 rough positioning stations, wherein one screw spot welding machine is respectively arranged at the positions from the second rough positioning station to the fourth rough positioning station counted from the front, the three screw spot welding machines are shown as 301, 302 and 303 in the figure, and the three screw spot welding machines are distributed at three stations at one side of the production line in the front and at the back; and two sides of each station at the fifth to seventh coarse positioning stations are respectively provided with a bottom foot spot welding machine, six bottom foot spot welding machines are distributed on three stations behind the screw spot welding machine, the three groups of bottom foot spot welding machines are shown as 801, 802 and 803 in the figure, and all the spot welding machines are connected on a three-axis motion system.

The working process of the invention is explained as follows:

1. screw feeding system and chassis carry positioner cooperation work, the work flow is: and (4) loading the screws into a main vibration disc machine, and enabling the screws to flow into a hopper from a feeding channel after being sequenced by the main vibration disc machine. The hopper is rotated under the drive of the distribution motor, and when the hopper is rotated to a position where the distribution hole is staggered with the blocking piece, the screw falls into the vibration disc from the corresponding discharging chute to complete distribution.

The screws in the vibrating disc are arranged on the crack tracks after being sequenced by the vibrating disc, the cylinder of the cutting disc is in one state, a group of material passing seams are communicated with the cracks on the group of crack tracks, at the moment, the screws can enter the material passing seams, the cylinder of the cutting disc acts to cut three screws into the material passing seams simultaneously, the screws on the crack tracks cannot enter the material discharging holes under the limit of the edge of the cutting disc in the rotating process of the cutting disc, the rotating position of the cutting disc is just right above the material discharging holes, so the three screws fall into the material discharging pipes, the heads of the screws fall onto the material supporting device after the material discharging pipes reach the material supporting pipes through the material discharging hose and the Y-shaped tee joint, at the moment, the upper cylinder and the lower cylinder move upwards, the clamping jaws act to clamp the rod parts of the screws, at the moment, the positioning device already fixes the position of the chassis, and the three positioning columns are positioned in the three screw holes, the upper and lower air cylinders move downwards to pull down each screw from the material supporting device and send the screw into a screw hole on the bottom plate below, the fine positioning air cylinder moves downwards while the upper and lower air cylinders move downwards, the positioning column moves out of the screw hole, and the control system controls the material cutting plate to continuously cut the next group of screws.

When the model is changed, after the diameter of a circle formed by three screw holes on the air conditioning plate changes, the diameter adjusting motor drives the diameter adjusting plate to rotate, the upper part of the material supporting pipe is connected with the hose, so the adjusting plate rotates to push the material supporting pipe to move in the radial direction, the material supporting pipe cannot move in the circumferential direction due to the circumferential limit of the radial guide plate, and if the central positions of the three screw holes are not changed, the diameter adjusting plate and the diameter changing plate can be adjusted only by rotating. If the positions of the three screws are changed, the fine positioning mechanism and the material supporting pipe can be moved to corresponding positions through the plane two-axis moving mechanism A and the plane two-axis moving mechanism, the vertical alignment can be realized through the rotation of the diameter adjusting frame and the diameter reducing frame in the circumferential direction, and after the size of the chassis is changed, the position of the adjusting plate can be adjusted through the left and right directions of the gear rack, so that the coarse positioning mechanism can adapt to the change requirement in the width direction of the bottom plate.

2. The bottom foot feeding and finishing device has the working process that: the footing is stacked in multiple layers in the material phase box and matched with different chassis to form footings of different shapes, 701 shows a footing, a plurality of footings are not symmetrical in the middle of the length direction, so the footing is needed to be sorted, the length direction of the footings when being packed in the material box is the front and back direction, the three-axis moving system drives the mounting plate to drive each floating adsorption head, once one adsorption head contacts the footing, a floating rod in the adsorption head moves upwards, the light hole is blocked after the floating rod moves upwards, the signal of the correlation switch changes, the control system controls the electromagnet to be electrified to adsorb the footings, the three-axis moving system stops descending and changes to ascend, the mounting plate is moved to the upper part of a left conveying belt and a right conveying belt, the electromagnet is powered off after the footings are placed on the conveying belts, the footings are conveyed towards the front and back conveying belts through the inclined plane footings, the bottom foot is controlled to reach the bottom foot turning device through the incoming material detection switch, the bottom foot is positioned on the right-angle plate, at the moment, the shape of the bottom foot is recognized by the visual recognition camera and is compared with the target shape which is stored in the system and needs to be arranged, the system judges whether the bottom foot needs to be turned and horizontally rotates, if not, the bottom foot directly moves backwards to the finger clamping jaw air cylinder, if so, the control system drives the material clamping air cylinder of the bottom foot turning device to act, the bottom foot is clamped between the clamping plate and the right-angle plate, the up-and-down rotating air cylinder acts to turn over the bottom foot, namely, the turning between the upper surface and the lower surface is realized, the bottom foot falls onto the finger clamping jaw air cylinder after turning, the bottom foot falling onto the finger clamping jaw air cylinder is turned around and directly conveyed backwards, if turning around is needed, the bottom foot rotating and lifting air cylinder rises, the finger clamping jaw air cylinder clamps the bottom foot, and (5) continuously conveying backwards, namely finishing the feeding and the arrangement of the bottom feet.

3. The footing moves and carries the working process to do: the finished bottom feet are kept on the striker plate and do not move backwards after reaching the striker plate, a bottom foot detection switch obtains a signal, a bottom foot posture correction cylinder acts to push the bottom feet to be straight, a three-axis one-house device moves the electromagnetic suction head to the upper part of the bottom feet, the bottom feet are sucked by electrifying the electromagnet and then are conveyed to a chassis at the first group of chassis spot welding machines through three-axis movement, the chassis at the first group of chassis spot welding machines is welded by screws after passing through the stations of the three screw spot welding machines, and after spot welding operation at the first group of chassis spot welding machines is completed, the rest spot welding operation is completed according to process requirements, namely the welding of the whole chassis is completed successively.

After the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and it is intended that all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical spirit of the present invention shall fall within the technical scope of the present invention, and the present invention shall not be limited to the embodiments illustrated in the description.

Claims

1. Air conditioner chassis automatic weld production line carries positioner, footing feeding system, spot welding device and control system, its characterized in that including screw feeding system, chassis:

the spot welding device comprises a plurality of spot welding machines arranged at 7 coarse positioning stations, wherein one screw spot welding machine is respectively arranged at the positions from the second coarse positioning station to the fourth coarse positioning station counted from the front, and three screw spot welding machines are distributed at three stations at one side of the production line in the front and back direction; and two sides of each station at the fifth to seventh coarse positioning stations are respectively provided with a base pin spot welding machine, six base pin spot welding machines are distributed on three stations behind the screw spot welding machine, and each spot welding machine is connected on the three-axis motion system.

2. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the diameter adjusting frame is rotatably connected onto the base through a diameter adjusting shaft, the base is fixedly connected onto the plane two-shaft moving mechanism A, a driving diameter adjusting frame driving motor for driving the diameter adjusting frame to rotate is arranged on the base, the base in the fine positioning mechanism is connected onto the plane two-shaft moving system B, the plane two-shaft moving mechanism adopts a sliding table mechanism driven by a lead screw, and a positioning frame shaft driving motor for driving the positioning frame shaft to rotate is arranged on the base.

3. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the number of the vibrating discs is 2, the vibrating discs in the two groups are alternately arranged, the material passing seams are 6, the rotating driving device is a material cutting disc driving cylinder, one end of the material cutting disc driving cylinder is hinged on the rack, the end of a cylinder rod is connected with a joint bearing, and a shaft connected with the material cutting discs penetrates through the joint bearing; the material conveying device comprises two groups of discharging pipes, Y-shaped tee joints are arranged at the upper ends of material supporting pipes, every two discharging pipes in different groups are communicated with the same material supporting pipe through the Y-shaped tee joints by using hoses, a material passing seam is arc-shaped, the upper opening of each discharging pipe is a horn-shaped opening with a large upper part and a small lower part, a plurality of grooved wheels are arranged on the periphery of a material cutting disc, and material cutting sheets are located in grooves of the grooved wheels.

4. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the rotary driving power device connected to the diameter adjusting plate is a diameter adjusting motor, a central shaft is fixedly connected to the center of the diameter adjusting plate, the diameter adjusting motor directly drives the central shaft or drives the central shaft through a transmission mechanism, and the transmission mechanism comprises belt transmission, gear transmission and chain transmission.

5. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the material supporting device is a multi-petal elastic sheet, a screw through hole is formed in the middle of the multi-petal elastic sheet, when a screw falls down, a rod part penetrates through the through hole, and a head part falls on the elastic sheet, and the material supporting device is arranged in a material supporting pipe or arranged in the following mode: the cylinder frame is fixedly connected to the lower end of the material supporting pipe, a material passing hole communicated with the material supporting pipe is formed in the cylinder frame, and the material supporting device is arranged in the material passing hole.

6. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the support material device include along circumference evenly distributed's at least three marble, seted up the marble hole on the pore wall of screw whereabouts route, the marble mouth is close to and holds in the palm material pipe lower extreme, the diameter in marble hole be less than the diameter of marble along the radial axle in marble hole, the radial outside top of marble is equipped with the spring, the bolt that connects in the marble hole through revolving in the spring outer end compresses tightly, when the screw fell down, the pole portion passed from the hole between the three marble, the head fell on the marble, the marble be spherical or ellipsoid shape.

7. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: a material sensing photoelectric switch is mounted on the machine frame near the tail end of the crack track and connected to the control system, a magnetic switch is arranged on the clamping jaw air cylinder, and the magnetic switch is connected to the control system.

8. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the feeding device also comprises a distributing device, the vibrating disc distributing device comprises a main vibrating disc machine, the main vibrating disc machine is positioned above the vibrating discs, a hopper with three distributing holes at the bottom is arranged below a discharging channel of the main vibrating disc machine, the hopper is divided into three parts by three spacers, a material distribution hole is arranged between every two spacers, the hopper is connected with the output of a material distribution motor, a blanking chute is arranged below the blanking hole of the hopper, a baffle is arranged between every two blanking chutes and is positioned between the two blanking chutes, the baffle and the blanking chutes are fixedly connected on a conversion frame, the conversion frame is rotationally connected on a shaft taking the center of the hopper as an axis, the conversion frame is connected with a rotation driving device, the rotation driving device drives the conversion frame to rotate, and then the outlet of the discharging chute is switched to be connected with the inlets of the other group of 3 vibration discs.

9. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the rear ends of two coarse positioning cylinders on one side of the chassis are hinged to the frame, the rear portion of the coarse positioning rod is V-shaped, the coarse positioning rod is rotatably connected to the frame, the rear ends of the two coarse positioning cylinders on the other side of the chassis are hinged to the adjusting plate, the adjusting plate is slidably connected to the frame in the left-right direction, the coarse positioning rod on the side is rotatably connected to the adjusting plate, a rack is fixedly connected to the adjusting plate and provided with a gear in a matched mode with the rack, and the gear is connected to an output shaft of an adjusting plate adjusting motor.

10. The automatic welding production line of the air conditioner chassis according to claim 1, characterized in that: the three-axis transfer device is characterized in that a main sliding block and an auxiliary sliding block are arranged on a sliding rail at the tail end of the three-axis transfer device in a sliding mode, the main sliding block is driven by a driving system in the three-axis transfer device, two electromagnet suction heads are fixedly connected to the sliding blocks through mounting frames respectively, one of the two mounting frames is fixedly connected with a cylinder body of an electromagnetic suction head adjusting cylinder, and the other mounting frame is fixedly connected with a cylinder rod of the electromagnetic suction head adjusting cylinder.