CN110919228B

CN110919228B - Automatic welding production line for air conditioner chassis

Info

Publication number: CN110919228B
Application number: CN202010008748.1A
Authority: CN
Inventors: 史春雷; 张力; 牛振华; 李耀; 杜志新
Original assignee: Anyang Haorui Robot Co ltd
Current assignee: Anyang Haorui Robot Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2023-11-10
Anticipated expiration: 2040-01-06
Also published as: CN110919228A

Abstract

The utility model provides an automatic welding production line of air conditioner chassis, includes screw feeding system, chassis transport positioner, footing feeding system, spot welding device and control system, screw feeding system include the vibration dish, the vibration dish is connected to control system, the chassis transport positioner constitute by conveyor and positioner, footing feeding system includes footing feeding finishing device and footing and moves on material loading device, spot welding device including setting up a plurality of spot welder in the first 7 thick location stations department, wherein from the past count second to fourth thick location station department respectively are provided with a screw spot welder, every station both sides of fifth to seventh thick location station department respectively set up a footing spot welder, each spot welder all connects on triaxial moving system. The invention realizes the automatic welding of the screw and the footing in the production of the air conditioner chassis.

Description

Automatic welding production line for air conditioner chassis

Technical Field

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

Background

The chassis of the air conditioner is a part for installing a compressor and installing and fixing the air conditioner in the air conditioner production, three screws for fixing the compressor are needed to be fixedly welded on the chassis by adopting a spot welder, two feet are needed to be welded on the chassis after the screws are welded, two or three spot welding points are arranged between each foot and the chassis, the screw and the feet on the chassis of the air conditioner are basically welded by manpower at present, and sometimes, the welding is realized locally, such as three screws are sequentially and automatically welded, but the number of personnel needed to be configured is not reduced in the production, when the screws of the chassis are welded, three screw holes are reserved in the chassis at present, the three screw holes are positioned on the same circle, screws with an adaptive model are penetrated into the three screw holes during operation, then the screws and the chassis are fixed together after the screws are welded by the spot welder, the prior air conditioner chassis production is carried out manually, on the one hand, no automatic equipment is used for realizing the function at present, on the other hand, the difficulty of equipment for developing the function is high, because the air conditioner produced by factories is more in model number, the screw holes of the chassis on different models are different in position, so that one set of equipment is difficult to meet the production requirements of various types of air conditioners, at present, the screw can be completely sequenced by utilizing a vibration disc in many occasions in production, the sequenced screws can be sequenced in sequence from front to back according to the design requirement, but how to accurately enter the sequenced screws into three screw holes on the chassis can not be realized on the prior equipment according to the automatic adjustment of the chassis on different models during feeding, the screw is also required to be spot-welded on a spot welder after being fed into the screw holes, the screw welding of the prior air conditioner chassis is carried out manually, however, along with the increase of labor cost and uncertainty in various aspects brought by manual operation in production practice, development of an automatic welding device for air conditioner chassis screws is a necessary development hand, foot welding is carried out after screw welding, the foot welding is realized by adopting a spot welder, the foot has directivity and front and back fit requirements on a chassis, at present, the foot is directly packaged after being punched, multiple layers of materials are stacked in a material photo box, the directions and the front and back are randomly formed, and no rule exists, so that the automatic feeding and arrangement of the chassis are basic operation if the automatic welding of the chassis is realized, and no mature device can be directly applied at present. In the welding of the bottom feet and the chassis, the correct placement of the front side, the back side and the direction must be ensured, which is judged 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 because the front side, the back side and the direction of the bottom feet are greatly different. The problem in welding is that no mechanized automatic welding equipment exists at present, and automatic welding firstly requires standard feeding and also can be adjusted in real time according to the feet of different types. The problems are core technical problems to be solved in developing an air conditioner chassis welding production line, the problems are solved well, the air conditioner chassis can be welded efficiently and accurately, the labor cost is reduced, the production efficiency is improved, and no mature production equipment is available in China at present for selection.

Disclosure of Invention

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

In order to achieve 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 foot feeding system, a spot welding device and a control system,

the screw feeding system comprises a vibrating tray, the vibrating tray is connected to a control system, the vibrating tray is one or more groups, the number of each group is 3, the tail end of the vibrating tray is provided with a slit track, the sequenced screws are hung in the slit tracks, a cutting tray is rotationally arranged on a feeding rack in the tail end of each slit track, the tail end of each slit track is positioned at the edge of the cutting tray, one or more groups of blanking holes are arranged on the cutting tray, each group of blanking holes consists of 3 evenly distributed blanking holes, a passing slit which passes through the blanking holes is arranged on the edge of the cutting tray, a rotation driving device is connected to the cutting tray and drives the cutting tray to rotate back and forth, when the slit is communicated with the passing slit, the rotation driving device drives the cutting tray to rotate, the screws pass through the passing slit and finally enter the blanking holes, a plurality of groups of blanking pipes are arranged on the feeding rack under the cutting tray, 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 the blanking plates carry screws to rotate up and down, 3 supporting pipes which are positioned on the same circumference are arranged below the blanking pipes, each pipe in each group of blanking pipes is connected to one supporting pipe through a blanking hose, a supporting device is arranged in the supporting pipe which is close to the outlet of the screws or is arranged below the supporting pipe, an air cylinder frame is fixedly connected to each supporting pipe, an upper air cylinder and a lower air cylinder are fixedly connected to the air cylinder frame, a clamping jaw air cylinder is connected to the cylinder rod of each upper air cylinder and the lower air cylinder, the clamping jaw holes of the clamping jaw air cylinders are positioned below the supporting pipes, a diameter adjusting mechanism is matched with the supporting pipes and comprises a diameter adjusting plate, the uniform distribution and a plurality of cam-shaped strip-shaped holes are arranged on the diameter adjusting plate in an inserting mode, the diameter adjusting plate is rotatably arranged on the diameter adjusting frame, the diameter adjusting plate is connected with a rotary driving power device, the diameter adjusting frame is fixedly connected with a radial guide plate, the radial guide plate is provided with radial guide grooves, the material supporting pipes are arranged in the guide grooves in a matched radial sliding manner or are arranged in the guide grooves in a radial sliding manner through guide blocks, and the rotary driving device, the rotary driving power device and the air cylinders are controlled through 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 pushing blocks are arranged on a plate chain of the plate chain conveyor at intervals, each group of blocking blocks consists of two pushing blocks in the left-right direction, and the pushing blocks are fixedly connected with the plate chain; the pushing block pushes the chassis to advance; the positioning device comprises 7 sets of coarse positioning mechanisms which are at least distributed front and back, 1 set of fine positioning mechanism is matched with the most front coarse positioning mechanism, the coarse positioning mechanism comprises four coarse positioning cylinders which are positioned at two sides of the chassis, two of the four coarse positioning cylinders are in a left-right direction and a front-back direction, the cylinder rods of the two coarse positioning cylinders in the left-right direction are connected with angle iron-shaped positioning plates, the end parts of the cylinder rods of the two coarse positioning cylinders in the front-back direction are hinged on a driving rod, coarse positioning rods are arranged in the coarse positioning mechanisms, the rear ends of the coarse positioning rods are hinged on the driving rod, the coarse positioning rods are rotatably arranged, and the two angle iron-shaped positioning plates in each set of coarse positioning mechanism are close to two corners of the front part of the chassis; 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 three precise positioning cylinders in the vertical direction, 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 inserting column is arranged at the lower part of each precise positioning cylinder, each precise positioning cylinder is inserted into the cam hole through the inserting column, radial sliding blocks are connected to the inserting column, each radial sliding block is arranged in a corresponding radial groove in a sliding mode, long holes for the inserting column to pass through are formed in the bottom surface of each radial groove, the bottom surface of each sliding block is supported on the bottom surface of each radial groove, the three radial grooves are fixedly connected to a positioning frame, the center of the diameter-changing disc is fixedly connected with a diameter-changing driving shaft, the diameter-changing driving shaft is rotatably connected with the positioning frame, and the bottom of the positioning frame is rotatably connected to a base through the positioning frame shaft; three positioning columns in the fine positioning mechanism are opposite to the three material supporting pipes vertically;

The footing feeding system comprises a footing feeding and arranging device and a footing transferring and feeding device, the footing feeding and arranging device comprises two footing left and right conveying belts which move in the left and right directions, the tail ends of the two footing left and right conveying belts are respectively connected with a footing front and rear conveying line which moves in the front and rear directions, the footing front and rear conveying line is positioned above a 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 recognition camera, a footing overturning device and a footing horizontal 180-degree rotating device are arranged on the footing front and rear conveying line, the footing absorbing and feeding device comprises a plurality of floating absorption heads which are distributed in rows and columns, the upper ends of the plurality of floating absorption heads are fixedly connected to a mounting plate, the mounting plate is connected to a triaxial moving system controlled by a control system, the floating absorption heads comprise floating rods, the electromagnet is fixedly connected to the lower end of the floating rod, a flange is arranged near the lower part of the floating rod, a reset spring penetrates through the floating rod at the upper part of the flange, a limiting edge is arranged in the lower opening of the sliding sleeve, the floating rod vertically slides and penetrates through the sliding sleeve, the flange is limited on the limiting edge, the sliding sleeve is fixedly connected in the fixed sleeve, a spring upper limiting part is fixedly arranged at the upper part of the reset spring, a 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 at the lower part of the unthreaded hole, the floating rod compresses the reset spring to move upwards, the floating rod blocks the unthreaded hole, the unthreaded holes of the fixed sleeves of the two floating adsorption heads at the two ends of each row are respectively provided with an emitter and a receiver of the opposite-emission switch, and the electromagnet are connected to the control system; the foot front-back conveying line comprises foot front-back conveying belts moving in the multi-section front-back direction, a foot overturning device and a foot horizontal 180-degree rotating device are arranged between two adjacent sections of foot front-back conveying belts, a visual recognition camera is arranged above the conveying line at the foot overturning device or the foot horizontal 180-degree rotating device or above the conveying line in front of the foot overturning device and the foot horizontal 180-degree rotating device, the foot overturning device comprises an upper rotating cylinder and a lower rotating cylinder fixedly connected to a frame, the rotating shafts of the upper rotating cylinder and the lower rotating cylinder are in the horizontal left-right direction, a clamping mechanism is fixedly connected to the upper rotating cylinder and the lower rotating cylinder, the clamping mechanism comprises a clamping cylinder fixedly connected to the output of the rotating cylinder, a right angle plate is fixedly connected to the cylinder 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, and a clamping plate is fixedly connected to the cylinder rod of the clamping cylinder, and the foot 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 foot rotating lifting cylinder, the rotating shaft of the horizontal rotating cylinder is in a numerical direction, and the foot passes through the middle of the two clamping jaws of the finger clamping jaw cylinder; a feed detection switch is arranged on a conveying line in front of the footing overturning device, and each cylinder and the visual recognition camera are connected to a control system;

The foot transferring and feeding device comprises two triaxial transferring devices which are matched with each other and arranged at the tail ends of the front conveying line and the rear conveying line, two electromagnet suction heads are connected to the triaxial transferring devices, a baffle plate is arranged at the tail ends of the front conveying line and the rear conveying line, foot posture correcting cylinders are arranged on the side surfaces of the conveying lines in front of the baffle plate, correction push plates in the left-right direction are connected to cylinder rods of the correcting cylinders, and foot detection switches are arranged at the rear ends of the front conveying line and the rear conveying line;

the spot welding device comprises a plurality of spot welders arranged at the first 7 coarse positioning stations, wherein a screw spot welder is respectively arranged at the second to fourth coarse positioning stations from the front count, and three screw spot welders are distributed at three stations at one side of the production line in front and back; and each of the fifth to seventh coarse positioning stations is provided with a foot spot welder at two sides of each station, six foot spot welders are distributed on three stations behind the screw spot welder, and each spot welder is connected to the triaxial motion system.

Further; the diameter adjusting frame is rotationally connected to the base through a diameter adjusting shaft, the base is fixedly connected to the planar biaxial movement mechanism A, a diameter adjusting frame driving motor for driving the diameter adjusting frame to rotate is arranged on the base, a base in the fine positioning mechanism is connected to the biaxial planar movement system B, the biaxial planar movement mechanisms are all screw-driven sliding table mechanisms, and a positioning frame shaft driving motor for driving the positioning frame shaft to rotate is arranged on the base.

Further; the number of the vibrating discs is 2, the vibrating discs in the two groups are alternately arranged, the number of the material passing slits is 6, the rotation driving device is a material cutting disc driving cylinder, one end of the material cutting disc driving cylinder is hinged on the frame, the rod end of the cylinder is connected with a joint bearing, and a shaft connected with the material cutting disc is arranged in the joint bearing in a penetrating way; the blanking pipe is two sets, holds in the palm the material pipe upper end and is provided with Y shape tee bend, and every two blanking pipes that are in different sets adopt the hose to pass through Y shape tee bend intercommunication same holds in the palm the material pipe, the material seam of passing be the arc, the blanking pipe upper mouth be big-end-up's horn mouth, install a plurality of grooved wheels in the periphery of blank dish, the blank piece is located the inslot of grooved wheel.

Further; 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 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, the head part falls on the elastic sheet, and the material supporting device is arranged in a material supporting pipe or is arranged in the following mode: the cylinder frame is fixedly connected to the lower end of the material supporting pipe, the cylinder frame is provided with a material passing hole communicated with the material supporting pipe, and the material supporting device is arranged in the material passing hole.

Further; the material supporting device comprises at least three marbles uniformly distributed along the circumference, a marble hole is formed in the hole wall through which the screw falls, the marble hole is close to the lower end of the material supporting pipe, the diameter of the marble hole is smaller than that of a radial shaft of the marble hole, a spring is arranged on the radially outer top of the marble, the outer end of the spring is tightly pressed through a bolt screwed in the marble hole, when the screw falls, the rod part penetrates through the holes among the three marbles, the head part falls on the marble, and the marble is spherical or ellipsoidal.

Further; a material induction photoelectric switch is arranged on the frame near the tail end of the crack track and connected to a control system, and a magnetic switch is arranged on the clamping jaw cylinder and connected to the control system.

Further; the feeding device also comprises a distributing device, the vibrating tray distributing device comprises a total vibrating tray machine, the total vibrating tray machine is located above the vibrating tray, a hopper with three distributing holes is arranged at the bottom of the discharging channel of the total vibrating tray machine, three separation sheets are divided into three parts, one distributing hole is arranged between every two separation sheets, the hopper is connected to the output of the distributing motor, a discharging chute is arranged below the discharging hole of the hopper, a baffle is arranged between every two discharging chutes, the baffle is located between the two discharging chutes, the baffle and the discharging chute are fixedly connected to a conversion frame, the conversion frame is rotationally connected to a shaft taking the center of the hopper as an axis, a rotation driving device is connected to the conversion frame, and after the rotation driving device drives the conversion frame to rotate, the outlet of the discharging chute is switched to be connected with the inlet of the 3 vibrating tray of the other group.

Further; the rear ends of two coarse positioning cylinders positioned on one side of the chassis in the coarse positioning mechanism are hinged on the frame, the rear parts of the coarse positioning rods are in V shapes, the coarse positioning rods are rotationally connected on the frame, the rear ends of two coarse positioning cylinders positioned on the other side of the chassis are hinged on the adjusting plate, the adjusting plate is slidingly connected on the frame in the left-right direction, the coarse positioning rods on the side are rotationally connected on the adjusting plate, racks are fixedly connected on the adjusting plate, gears are matched with the racks, and the gears are connected on an output shaft of an adjusting motor of the adjusting plate.

Further; the three-axis transfer device is characterized in that a main sliding block and an auxiliary sliding block are slidably arranged on a sliding rail at the tail end of the three-axis transfer device, the main sliding block is driven by a driving system in the three-axis transfer device, two electromagnet suction heads are respectively fixedly connected to the sliding block through mounting frames, 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 invention realizes automatic welding of the screw and the footing in the production of the air conditioner chassis, and effectively saves manpower and material resources.

Drawings

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

Fig. 2 is a schematic view of one orientation of the screw feeder system.

Fig. 3 is a schematic view of another orientation of the screw feeder system.

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

FIG. 5 is a schematic top view of the screw feeder system with the general vibration plate machine 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 machine removed.

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

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

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

Fig. 11 is a schematic view of one of the holding devices.

One of the schematic diagrams of the positioning device in the front of fig. 12.

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

Second, the front positioning device of fig. 14 is shown.

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

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

Fig. 17 is a schematic view of the front of the foot feed system.

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

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

Fig. 20 is a schematic view of a foot flipping unit and a foot horizontal 180 degree rotation unit.

Fig. 21 is a schematic view of a foot transfer loading station.

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

Detailed Description

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

The three shafts involved in the application are all X, Y, Z three-direction belt-driven moving systems, which are commonly used driving systems in the current machines, and can be selected from screw driving, gear rack driving and belt driving according to the precision requirement, and the three shafts involved in the application are not repeated.

The application will be explained in further detail with reference to the accompanying drawings, in which: :101: a feeding rack; 102: a total vibration disk machine; 103: a hopper; 104: a blanking chute; 105, vibrating plate; 106: a planar biaxial movement mechanism; 107: a cutting tray; 108: discharging pipes; 109: discharging channels of the total vibration disc machine; 110: a cloth motor; 111: a cloth hole; 112: a baffle; 113: a spacer; 114: a slit rail; 115: a blanking hole; 116: a material passing seam; 117: a horn mouth; 118: a sheave; 119: the conversion frame rotates to drive the air cylinder; 120: a rotating frame; 121: a conversion frame; 122: a cutting disc driving cylinder; 123: a knuckle bearing; 124: y-shaped tee joint; 125: a diameter-adjusting plate; 126: a bar-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 synchronous wheel connected with the central shaft of the diameter-adjusting plate; 133: a synchronous belt driven by the diameter-adjusting motor; 134: a base; 135: a diameter adjusting frame driving motor; 136: the diameter adjusting frame is rotatably connected with the base; 137: a synchronous belt driven by a diameter adjusting frame driving motor; 138: a diameter adjusting frame; 139: a spring plate; 140: contour lines of the cam-shaped bar 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, A is as follows; 201: a plane biaxial movement mechanism B;202: a coarse positioning cylinder A;203: a coarse positioning cylinder B;204: angle iron-shaped positioning plate I; 205: a coarse positioning cylinder C;206: a coarse positioning cylinder D;207: angle iron-shaped positioning plate II; 208: a frame of the positioning mechanism; 209: coarse positioning rod I; 210: a thick positioning rod II; 211: a driving plate; 212: an adjustment plate; 213: a rack; 214: a gear; 215: adjusting a motor; 216: a guide rail; 217: a fine positioning cylinder; 218: positioning columns; 210: a reducing disc; 220: a cam hole; 221: a radial groove; 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: the positioning frame shaft drives a motor; 301: a screw spot welding machine A;302: a screw spot welding machine B;303: a screw spot welding machine C;401: a plate link chain conveyor; 402: a pushing block; 501: a chassis; 601: a floating adsorption head; 602: a mounting plate; 603: a three-axis movement system; 604: a footing overturning device is arranged; 605: a foot horizontal 180-degree rotating device; 606: a footing feeding rack; 607: a material box; 608: left and right conveyer belts A;609: left and right conveyer belts B;610: front and rear conveyor belts a;611: front and rear conveyor belts B;612: a visual recognition camera; 613: a portal frame; 614: a triaxial transfer device; 615: a striker plate; 616: a footing posture correction cylinder; 617: correcting the push plate; 618: a terminal slide rail; 619: a main slider; 620: an auxiliary sliding block; 621: the mounting frame is connected with the main sliding block; 622: the mounting rack 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: a spring upper limit part; 6017: a fixed sleeve; 6018: a light hole; 6019: an emitter; 6010: a receiving electrode; 6041: a vertical rotary cylinder; 6042: a clamping cylinder; 6043: a right angle plate; 6044: a clamping plate; 6051: a bottom foot rotating lifting cylinder; 6052: a horizontal overturning cylinder; 6053: finger clamping jaw cylinder; 701: a footing; 801: a first set of foot spot welders; 802: a second set of foot spot welders; 803: and a third group of foot spot welders.

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

the screw feeding system comprises a feeding frame 101 and further comprises vibration plates, 105 are vibration plates, the vibration plates are connected to a control system, the number of the vibration plates is one or more, the number of the vibration plates is 3, the tail end of each vibration plate is provided with a crack track, 114 is a crack track, and the sequenced screws are hung in the crack tracks.

A cutter tray 107 is rotatably arranged on a frame in the tail end of each slit rail, a plurality of grooved wheels 118 are arranged on the periphery of the cutter tray, the cutter tray is positioned in a groove of the grooved wheels, the tail end of each slit rail is positioned at the edge of the cutter tray, one or more groups of blanking holes are formed in the cutter tray, each group of blanking holes consists of 3 blanking holes which are uniformly distributed, a blanking hole is shown at 115, a passing seam which leads to the blanking hole is formed from the edge of the cutter tray, a passing seam is shown at 116, and the passing seam is arc-shaped. The number of the vibrating discs in the embodiment is 2, the vibrating discs in the two groups are alternately arranged, and the number of the material passing slits is 6. A material sensing photoelectric switch is mounted on the frame near the end of the crack track, the material sensing photoelectric switch is connected to the control system, and the material sensing photoelectric switch is commonly used for detecting materials, and is commonly applied in a mode which is not shown in the figure.

The rotary driving device is connected to the cutting tray and drives the cutting tray to rotate back and forth, in the embodiment, the rotary driving device is a cutting tray driving cylinder, 122 is a cutting tray driving cylinder, one end of the cylinder is hinged to the frame, the end of the cylinder is connected with a joint bearing 123, and a shaft connected with the cutting tray is arranged in the joint bearing in a penetrating way; when the slit is communicated with the passing slit, the rotary driving device drives the blanking disc to rotate, and the screw passes through the passing slit 116 and finally enters the blanking hole 115. In this embodiment, 2 groups of 6 vibration plates are configured, only one group works during working, and the air cylinder can cut into screws from the slit rails of one group of vibration plates to enter corresponding material passing slits during advancing and does not cut materials during retracting. When the vibratory plates are converted to another set, the air cylinders become retracted from the slit rails of the respective vibratory plates to cut into the screws into the respective pass slits without blanking as they advance.

A plurality of groups of blanking pipes are arranged on a frame below the blanking plate, 2 groups of blanking pipes are arranged in the embodiment, each group of blanking pipes consists of 3 blanking pipes which are uniformly distributed, a blanking pipe is 108 in the drawing, the upper opening of the blanking pipe is a horn opening with a large upper opening and a small lower opening, a horn opening is 117, and the positions of the blanking pipes correspond to the positions of blanking holes after the blanking plate carries screws to rotate up and down.

The lower part of the blanking pipe is provided with 3 supporting pipes positioned on the same circumference, 127 is shown as a supporting pipe, the upper end of the supporting pipe is provided with a Y-shaped tee, 124 is shown as a Y-shaped tee, and every two blanking pipes in different groups are communicated with the same supporting pipe through the Y-shaped tee by adopting hoses. The hose may be a flexible 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 supporting pipe through a blanking hose.

A material supporting device is arranged in the material supporting pipe near the screw outlet or arranged below the material supporting pipe. The material supporting device can be one of the following two types: one is: the material supporting device is a multi-petal spring plate, 139 is a spring plate, a screw through hole is formed in the middle of the multi-petal spring plate, when the screw falls down, the rod part passes through the through hole, the head part falls on the spring plate, and 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 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. In this embodiment, as shown in fig. 8, the elastic sheet is installed in the material passing hole. The other is: the material supporting device comprises at least three marbles evenly distributed along the circumference, wherein the marbles are 141, a marble hole is formed in the hole wall of a screw falling path, the marbles are 144, the holes of the screw falling path are close to the lower end of the material supporting pipe, the diameter of each marble hole is smaller than that of a radial shaft of each marble hole, a spring 142 is arranged on the radially outer top of each marble, the outer ends of the springs are tightly pressed through bolts 143 screwed in the marble holes, when the screws fall, the rod portion penetrates through the holes among the three marbles, the head portion of each marble falls on the corresponding marble, and each marble is spherical or ellipsoidal. When the marble is ellipsoidal, the pore diameter of the marble hole is smaller than the short axis length of the ellipsoid.

And an air cylinder frame 128 is fixedly connected to each material supporting pipe, an upper air cylinder 129 and a lower air cylinder 129 are fixedly connected to the air cylinder frame, a clamping jaw air cylinder 130 is connected to the cylinder rods of the upper air cylinder and the lower air cylinder, a clamping jaw hole of the clamping jaw air cylinder is positioned below the material supporting pipe, and a magnetic switch is arranged on the clamping jaw air cylinder and connected to a control system. The magnetic switch can be used for detecting the travel of the clamping jaw air cylinder, and when the clamping jaw air cylinder clamps the screw and does not clamp the screw, the travel is different, so that whether the clamping jaw air cylinder clamps the screw can be judged according to a magnetic switch signal.

The diameter adjusting mechanism comprises a diameter adjusting plate 125, wherein the diameter adjusting plate is uniformly provided with a plurality of cam-shaped strip-shaped holes, a cam-shaped strip-shaped hole is shown as 126, the peripheral surface contour line of a cam strip Kong Zhikong is a cam taking the diameter adjusting plate as the center, the cam-shaped strip-shaped hole is shown as 126, the peripheral surface contour line of the cam-shaped strip-shaped hole is shown as 140, the diameter adjusting plate is rotatably arranged on a diameter adjusting frame 138, a rotary driving power device is connected to the diameter adjusting plate, 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, a synchronous wheel connected to the central shaft of the diameter adjusting plate is directly driven by the diameter adjusting motor or driven by the central shaft through a transmission mechanism, and the transmission mechanism can also adopt belt transmission, gear transmission and chain transmission. As shown in the figure, the diameter-adjusting motor drives the central shaft to rotate through a synchronous belt driven by the diameter-adjusting motor, the diameter-adjusting motor drives the diameter-adjusting plate to rotate through the rotation of the central shaft, under the action of the cam-shaped strip-shaped holes, the three supporting pipes synchronously move inwards or outwards in the radial direction of a circle taking the diameter-adjusting plate as the center, the three supporting pipes are always positioned on a circle taking the center of the diameter-adjusting plate as the center of the circle during or after adjustment,

The radial guide plate 145 is fixedly connected to the diameter adjusting frame 138, the radial guide plate is provided with a radial guide groove 146, and each material supporting pipe is matched with the radial guide groove to be arranged in the guide groove in a sliding manner or is arranged in the guide groove in a sliding manner through a guide block in the radial direction, and the rotary driving device, the rotary power driving device and each air cylinder are controlled through the control system. In this embodiment, guide blocks 147 are connected to each material supporting pipe, the guide blocks are slidably disposed 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 via a diameter-adjusting frame shaft, the base is fixedly connected to the planar biaxial movement mechanism a106, and a diameter-adjusting frame driving motor 135 for driving the diameter-adjusting frame to rotate is provided on the base.

More preferably, the feeding device further comprises a distributing device, the distributing device comprises a total vibrating tray machine 101, the total vibrating tray machine is located above the vibrating trays, a hopper 103 with three distributing holes at the bottom is arranged below a discharging channel 109 of the total vibrating tray machine, the hopper is divided into three parts by three separation plates 113, one distributing hole 111 is arranged between every two separation plates, the hopper is connected to the output of a distributing motor 110, a discharging chute 104 is arranged below the discharging holes 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 chute are fixedly connected to a conversion frame 121, the conversion frame 121 is rotationally connected to a shaft taking the center of the hopper as an axis, a rotation driving device is connected to the conversion frame, and after the rotation driving device drives the conversion frame to rotate, the outlet of the discharging chute is switched to be connected with the inlet of the 3 vibrating tray of the other group; one end of the conversion cylinder is hinged on the feeding frame, the other end of the conversion cylinder is hinged with the rotating frame 120, the rotating frame is rotatably connected on the feeding frame, 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 pushing blocks are arranged on a plate chain of the plate chain conveyor at intervals, the pushing blocks are 402, each group of blocking blocks consists of two pushing blocks in the left-right direction, the pushing blocks are fixedly connected with the plate chain, and when the plate chain conveyor moves, the pushing blocks push the chassis to advance, and the plate chain conveyor is connected to a control system for control. The chassis is pushed to advance on the plate chain conveyor through the pushing block, so that stepping pushing of each station is realized, friction force between the plate chain and the chassis drives the chassis to advance, manual feeding of the plate chain conveyor can be realized, a robot can be adopted, and a pushing device can be configured by adopting a conveying belt to push the chassis onto the plate chain conveyor.

The positioning device consists of at least 7 sets of coarse positioning mechanisms and 1 set of fine positioning mechanism which are distributed front and back, wherein the forefront set of the 4 sets of coarse positioning mechanisms is matched with the fine positioning mechanism and used for accurately inserting screws into screw holes on a chassis, the rear three sets of the coarse positioning mechanisms are used for positioning when three screws are subjected to spot welding, the 4 sets of coarse positioning mechanisms are identical, and only the forefront set of coarse positioning mechanism is described in detail in combination with the figure.

The coarse positioning mechanism comprises four coarse positioning cylinders positioned at two sides of the chassis, wherein the four coarse positioning cylinders are a coarse positioning cylinder A shown as 202, a coarse positioning cylinder B shown as 203, a coarse positioning cylinder C shown as 205 and a coarse positioning cylinder D shown as 206; the four rough positioning cylinders in the figure are in a left-right direction and a front-back direction, the rough positioning cylinder A and the rough positioning cylinder C in the figure are in a front-back direction, the rough positioning cylinder B and the rough positioning cylinder D are in a left-right direction, angle iron positioning plates are connected to cylinder rods of the two rough positioning cylinders in the left-right direction, the angle iron positioning plates I and the angle iron positioning plates I in the figure are respectively connected to cylinder rods of the rough positioning cylinder B and the rough positioning cylinder D, the cylinder rod end parts of the two rough positioning cylinders in the front-back direction are hinged to driving rods, a driving rod is shown at 211 in the figure, rough positioning rods are arranged in rough positioning mechanisms, two rough positioning rods are shown at 209 and 210 in the figure, the rear ends of the rough positioning rods are hinged to the driving rods, the rough positioning rods in the rough positioning mechanisms are hinged to the same driving rod, the rough positioning rods are rotatably arranged, and the two angle iron positioning plates in each rough positioning mechanism are close to two corners of the front of a chassis; the two thick locating rods are close to two corners near the rear of the chassis. The rear part of the coarse positioning rod is V-shaped, the rear ends of two coarse positioning cylinders positioned on one side of the chassis in the coarse positioning mechanism are hinged on the frame, the coarse positioning rod is rotatably connected on the frame, the rear ends of two coarse positioning cylinders positioned on the other side of the chassis are hinged on the adjusting plate 212, the adjusting plate 212 is slidably connected on the frame in the left-right direction, in the embodiment, the adjusting plate is slidably connected on the frame through a guide rail 216 in the left-right direction, the coarse positioning rod on the side is rotatably connected on the adjusting plate 212, a rack 213 is fixedly connected on the adjusting plate, a gear 214 is matched with the rack, and the gear is connected on an output shaft of an adjusting motor 215 of the adjusting plate.

The fine positioning mechanism is matched and arranged at the forefront coarse positioning mechanism and comprises three positioning columns positioned on the same circle, wherein 223 is a positioning column, the upper end of the positioning column is conical, the conical shape is shown in fig. 14 and 15, the three positioning columns are respectively connected with cylinder rods of three fine positioning cylinders in the vertical direction, the three positioning columns in the fine positioning mechanism are vertically opposite to three supporting pipes, 217 is a fine positioning cylinder, the three fine positioning cylinders are limited on a reducing mechanism, the reducing mechanism comprises a reducing disc 219, three cam holes 220 are formed in the reducing disc, for distinguishing different names, the circumferential contour line of a cam Kong Zhikong is a cam taking the reducing disc as the center, the meanings of the cam holes are the same as those of the cam holes, the circumferential contour line of the cam holes is also shown in 140, the lower part of the three fine positioning cylinders is provided with a cylindrical inserting column, 223 is a plug-in column, each fine positioning cylinder is inserted in a cam hole through the plug-in column, a radial sliding block 222 is connected to the plug-in column, each radial sliding block is slidably arranged in a corresponding radial groove, 221 is a radial groove, three radial grooves are positioned on a diameter-changing disc, a long hole 224 for the plug-in column to pass through is arranged on the bottom surface of the radial groove, the bottom surface of the sliding block is supported on the bottom surface of the radial groove, the three radial grooves are fixedly connected to a positioning frame 225, the center of the diameter-changing disc is fixedly connected with a diameter-changing driving shaft, the diameter-changing driving shaft is rotationally connected with the positioning frame, a diameter-changing motor 226 and 227 which are used for driving the diameter-changing driving shaft to rotate are synchronous pulleys connected to the diameter-changing driving shaft, the diameter-changing motor drives the diameter-changing disc to rotate through a synchronous belt when the diameter-changing motor rotates, the three inserting columns move inwards or outwards in the radial synchronization of a circle with the diameter-variable disc as the center, and are always positioned on a circle with the center of the diameter-variable disc as the center of the circle after adjustment or adjustment, so that the diameter-variable adjustment can be realized by a cam hole, the bottom of a positioning frame 225 is rotationally connected to a base 228 through a positioning frame shaft, a positioning frame shaft driving motor 229 for driving the positioning frame shaft to rotate is arranged on the base, and a synchronous belt wheel can be connected to 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 the two-axis plane moving system B201, and the two-axis plane moving mechanisms all adopt screw-driven sliding table mechanisms.

The footing feeding system comprises a footing feeding and sorting device and a footing transferring and feeding device, wherein the footing feeding and sorting device comprises two footing left and right conveying belts which move in the left and right directions, and the two left and right conveying belts in the figure are respectively a left and right conveying belt A shown as 608 and a left and right conveying belt B shown as 609; the conveyor belts can be motor-driven belt conveyors, the tail ends of the left and right conveyor belts of the two feet are respectively connected with the front and rear conveyor lines of the feet moving in the front and rear directions, the connection positions of the tail ends of the left and right conveyor belts of the two feet and the front and rear conveyor lines of the feet are provided with downward inclined planes, the feet slide downwards from the left and right conveyor belts to the front and rear conveyor belts in an inclined manner, the inclined plane connection is easy to understand, and the connection is not shown in the figure.

The conveying line around the footing includes the conveying belt around the footing of multistage fore-and-aft direction motion, and the conveying belt B around the conveying belt A that the drawing shows around 610, 611 shows is the conveying belt around on two footing conveying lines respectively, is provided with the footing on the conveying belt around the footing and adsorbs loading attachment around, is provided with visual identification camera, footing turning device, footing horizontal 180 degrees rotary device around the footing on the conveying line, and 612 shows visual identification camera in the drawing.

The footing adsorbs loading attachment including being a plurality of floating adsorption heads 601 that the range distributes, a plurality of floating adsorption heads upper end fixed connection is on mounting panel 602, the mounting panel is connected on the triaxial moving system 603 of control system control, triaxial moving system indicates X, Y, Z three-direction moving system, triaxial moving system is the prior art that is commonly used in the mechanical motion, specific structure is not repeated. The floating adsorption head comprises a floating rod 6012, an electromagnet 6011 is fixedly connected to the lower end of the floating rod, a flange 6014 is arranged on the floating rod close to the lower portion of the floating rod, a reset spring 6015 is arranged on the floating rod on the upper portion of the flange in a penetrating mode, a limiting edge is arranged inside a lower opening of the sliding sleeve 6013, the floating rod vertically slides and penetrates through the sliding sleeve, the flange is limited on the limiting edge, the limiting edge is not shown in the drawing, the sliding sleeve is fixedly connected in a fixed sleeve 6017, a spring upper limiting portion 6016 is fixedly arranged on the upper portion of the reset spring, a limiting sleeve with a hole in the middle can be adopted for limiting the spring upper limiting portion, the limiting sleeve can be screwed into the sliding sleeve through threads, and the hole in the middle of the limiting sleeve is smaller than the radial size of the reset spring, so that the spring upper limiting portion is easy to understand. The specific structure is not shown in the figure any more, a light hole 6018 is formed in the fixed sleeve, when the lower part of the electromagnet is not stressed upwards, the upper end of the floating rod is positioned at the lower part of the light hole, when the lower part of the electromagnet is stressed upwards, the floating rod compresses the reset spring to move upwards, the floating rod blocks the light hole, the light holes on each floating adsorption head are positioned at the same height, as shown in fig. 3, the corresponding positions of the light holes of the fixed sleeves of the two floating adsorption heads at the two ends of each row are respectively provided with an emitter 6019 and a receiver 6010 of the opposite-emission switch, and the opposite-emission switch and the electromagnet are both connected to a control system;

The foot front-back conveying line comprises foot front-back conveying lines moving in the front-back direction in multiple sections, each section of conveying line is a motor-driven belt conveyor, a foot overturning device and a foot horizontal 180-degree rotating device are arranged between every two adjacent sections of foot front-back conveying lines, the foot horizontal 180-degree rotating device is positioned behind the foot overturning device, a visual recognition camera 612 is arranged above a conveying line at the foot overturning device or the foot horizontal 180-degree rotating device or above a conveying line in front of the foot overturning device and the foot horizontal 180-degree rotating device, the foot overturning device comprises an upper rotating cylinder 6041 and a lower rotating cylinder which are fixedly connected to a frame, the rotating shafts of the upper rotating cylinder and the lower rotating cylinder are in the horizontal left-right direction, a clamping mechanism is fixedly connected to the upper rotating cylinder and the lower rotating cylinder and comprises a clamping cylinder 6042 fixedly connected to the output of the rotating cylinder, the foot overturning device is fixedly connected with a straight angle plate 6043, the straight face of the foot overturning device is positioned on the opposite side of the cylinder rod of the clamping cylinder angle plate, and the foot overturning device is enabled to rotate by the clamping jaw 6053; the finger clamping jaw cylinder is connected to the output of the horizontal rotating cylinder 6052, the horizontal rotating cylinder is connected to the output of the foot rotating lifting cylinder 6051, the rotating shaft of the horizontal rotating cylinder is in the vertical direction, and the foot passes through the middle of the two clamping jaws of the finger clamping jaw cylinder; the foot horizontal 180-degree rotating device has the function of enabling the foot to turn around, a feed detection switch is arranged on a conveying line in front of the foot overturning device, and the air cylinders and the visual recognition cameras are connected to the control system.

In the application, the visual recognition camera is a recognition device commonly used in industry at present, the visual recognition camera and software provided by the visual recognition camera have the function of recognizing the shape of the footing, after images of the footing in all states are stored in the visual recognition camera, the visual recognition camera can accurately judge the state of the footing passing through the production line by shooting the upward facing position and the forward facing position of the footing passing through the production line according to the obtained footing information and the information stored in the interior, and then send a state signal of the footing to a control system, and the control system can obtain the state required by realizing the realization of the required state through the adjustment of the state, namely the adjustment of the direction attribute and the front-back attribute of the footing can be completed by the selective overturning, the horizontal rotation or the non-action of the two. In a specific model selection, the visual recognition camera in the application can adopt: the 170F host of the Kidney vision with 2 cameras with 500 ten thousand pixels is provided with the drive software for the visual recognition camera, and is set in the system.

The foot transferring and feeding device comprises two triaxial transferring devices 13 which are matched with each other and arranged at the tail ends of a front conveying line and a rear conveying line, two electromagnet suction heads 624 are connected to the triaxial transferring devices, electromagnets can be adopted for the electromagnetic suction heads, stop plates 615 are arranged at the tail ends of the front conveying line and the rear conveying line, foot posture correcting cylinders 616 are arranged on the side surfaces of the conveying lines in front of the stop plates, correction push plates 617 in the left-right direction are connected to cylinder rods of the correction cylinders, and foot detection switches are arranged at the rear ends of the front conveying line and the rear conveying line; the main slide block 619 and the auxiliary slide block 620 are slidably arranged on the slide rail 618 at the tail end of the three-axis transfer device, the main slide block is driven by a driving system in the three-axis transfer device, and the two electromagnetic suction heads are fixedly connected to the slide block through mounting frames respectively, and the mounting frames connected with the main slide block are shown as 621. Reference numeral 622 denotes a mounting bracket connected to the sub-slider, one of which is fixedly connected to the cylinder body of the electromagnetic suction head adjusting cylinder 623, and the other of which is fixedly connected to 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 welders arranged at the first 7 coarse positioning stations, wherein a screw spot welder is respectively arranged at the second to fourth coarse positioning stations from the front count, three screw spot welders are shown as 301, 302 and 303 in the figure, and three screw spot welders are distributed at three stations on one side of the production line in front and back; two sides of each station at the fifth to seventh coarse positioning stations are respectively provided with a foot spot welder, six foot spot welders are distributed on three stations behind the screw spot welders, three groups of foot spot welders are shown as 801, 802 and 803 in the figure, and each spot welder is connected to a triaxial motion system.

The working process of the invention is explained as follows:

1. the screw feeding system and the chassis conveying and positioning device are matched to work, and the working flow is as follows: and loading the screws into a total vibration disk machine, sequencing the screws from the total vibration disk machine, and flowing the screws into the hopper from the blanking channel. The hopper rotates under the drive of cloth motor, and when rotatory to cloth hole and separation blade stagger, the screw falls into the vibration dish from corresponding unloading chute, accomplishes the cloth.

Screws in the vibration disc are arranged on the slit track after being sequenced through the vibration disc, a group of passing slits are communicated with the slits on the group of slit tracks through the air cylinders of the cutting disc in a state, at the moment, the screws can enter the passing slits, three screws are simultaneously cut into the passing slits through the action of the air cylinders of the cutting disc, the screws on the slit track can not enter the blanking holes in the rotating process under the limit of the edges of the cutting disc in the rotating process of the cutting disc, at the moment, the rotating position of the cutting disc is just above the blanking holes, so the three screws can fall into the blanking tubes, after the screws reach the blanking tubes from the blanking tubes through the blanking hose and the Y-shaped tee joint, the heads of the screws fall onto the supporting device, at the moment, the upper and lower air cylinders move upwards, the clamping jaw air cylinders act, the clamping jaws clamp the rod parts of the screws, at the moment, the positioning device is used for positioning the chassis, the three positioning posts are positioned in the three screw holes, the upper and lower air cylinders move downwards, the screws are pulled down from the supporting device into the screw holes on the chassis below, at the same time, the upper and lower positioning cylinders move downwards, and the positioning cylinders move downwards the screws, and the cutting disc control the positioning cylinders move continuously, and the cutting disc move out of the positioning screws.

When the mould is changed in production, after the diameter of a circle formed by three screw holes on the air conditioner plate is changed, the diameter adjusting motor drives the diameter adjusting plate to rotate, and the upper part of the supporting pipe is connected with a hose, so that the adjusting plate rotates to prop against the supporting pipe to move in the radial direction. If the positions of the three screws change, the fine positioning mechanism and the material supporting pipe can be moved to corresponding positions by the plane two-axis moving mechanism A and the plane two-axis moving mechanism, the vertical alignment can be realized by rotating the diameter adjusting frame and the diameter changing frame in the circumferential direction, and after the size of the chassis is changed, the position of the adjusting plate is adjusted in the left-right direction by the gear rack, so that the coarse positioning mechanism can adapt to the changing requirement in the width direction of the bottom plate.

2. The working flow of the footing feeding and finishing device is as follows: the feet are stacked in layers in the material phase box, the feet with different shapes are matched with different chassis, 701 is shown as a foot, multiple feet are not symmetrical about the middle of the length direction, so that the feet need to be tidied, the length direction of the feet when being packed in the material phase box is the front-back direction, a triaxial moving system drives a mounting plate to drive each floating adsorption head, once one adsorption head contacts the feet, a floating rod in the adsorption head moves upwards, a light hole is blocked after the floating rod moves upwards, a signal of a correlation switch changes, a control system controls an electromagnet to electrify and adsorb the feet, a triaxial moving system stops descending and changes to ascending, the mounting plate moves above a left conveying belt and a right conveying belt, the mounting plate descends, the electromagnet is powered off after the feet are placed on the conveying belts, the feet are conveyed in the front-back direction of the feet on the left conveying belt and the right conveying belt, and the feet slide onto the front-back conveying belt through an inclined plane to be conveyed backwards, the feed detection switch is used for controlling the feed detection switch to reach the position of the foot overturning device, the foot is positioned on the rectangular plate, at the moment, the visual recognition camera recognizes the shape of the foot, the system judges whether the foot needs to be overturned and horizontally rotated or not and directly moves backwards to the finger clamping jaw cylinder if not, if so, the control system drives the feed clamping cylinder of the foot overturning device to act, the foot is clamped between the clamping plate and the rectangular plate, the up-down rotating cylinder acts, the foot is overturned, namely the overturning between the upper surface and the lower surface, the overturning falls onto the finger clamping jaw cylinder, the foot falling onto the finger clamping jaw cylinder is overturned, such as turning around, is directly conveyed backwards, if turning around is needed, the finger clamping jaw cylinder clamps the foot, the horizontal rotating cylinder rotates 180 degrees, the bottom feet are rotated and the lifting air cylinders fall down to drop the bottom feet on the front and rear conveyor belts at the rear parts, and the bottom feet are continuously conveyed backwards, so that the loading and the arrangement of the bottom feet are completed.

3. The foot transfer working process is as follows: the finished feet are blocked on the stop plate after reaching the stop plate and do not move backwards any more, a foot detection switch obtains signals, the foot is straightened by the foot gesture correction cylinder action, the three-shaft one-house device moves an electromagnetic suction head to the upper part of the foot, an electromagnet is electrified to suck the foot and then moves to a chassis at the first group of chassis spot welders through three shafts, the chassis at the first group of chassis spot welders completes the welding of screws through stations of the three screw spot welders, and after the spot welding operation at the first group of chassis spot welders is completed, the rest spot welding operation is completed according to the technological requirements, so that the welding of the whole chassis is completed.

Having described embodiments of the present invention in detail, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the scope and spirit of the invention as defined in the appended claims, and any simple, equivalent changes and modifications to the above examples are intended to be within the scope of the present invention and the invention is not limited to the embodiments as set forth in the specification.

Claims

1. The utility model provides an air conditioner chassis automatic weld production line, includes screw feeding system, chassis transport positioner, footing feeding system, spot welding device and control system, its characterized in that:

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 pushing blocks are arranged on a plate chain of the plate chain conveyor at intervals, each group of blocking blocks consists of two pushing blocks in the left-right direction, and the pushing blocks are fixedly connected with the plate chain; the pushing block pushes the chassis to advance; the positioning device comprises 7 sets of coarse positioning mechanisms which are at least distributed front and back, 1 set of fine positioning mechanism is matched with the most front coarse positioning mechanism, the coarse positioning mechanism comprises four coarse positioning cylinders which are positioned at two sides of the chassis, two of the four coarse positioning cylinders are in a left-right direction and a front-back direction, the cylinder rods of the two coarse positioning cylinders in the left-right direction are connected with angle iron-shaped positioning plates, the end parts of the cylinder rods of the two coarse positioning cylinders in the front-back direction are hinged on a driving rod, coarse positioning rods are arranged in the coarse positioning mechanisms, the rear ends of the coarse positioning rods are hinged on the driving rod, the coarse positioning rods are rotatably arranged, and the two angle iron-shaped positioning plates in each set of coarse positioning mechanism are close to two corners of the front part of the chassis; two thick locating rods are close to two corners of 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 three precise positioning cylinders in the vertical direction, 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 inserting column is arranged at the lower part of each precise positioning cylinder, each precise positioning cylinder is inserted into the cam hole through the inserting column, radial sliding blocks are connected to the inserting column, each radial sliding block is arranged in a corresponding radial groove in a sliding mode, long holes for the inserting column to pass through are formed in the bottom surface of each radial groove, the bottom surface of each sliding block is supported on the bottom surface of each radial groove, the three radial grooves are fixedly connected to a positioning frame, the center of the diameter-changing disc is fixedly connected with a diameter-changing driving shaft, the diameter-changing driving shaft is rotatably connected with the positioning frame, and the bottom of the positioning frame is rotatably connected to a base through the positioning frame shaft; three positioning columns in the fine positioning mechanism are opposite to the three material supporting pipes vertically;

the spot welding device comprises a plurality of spot welding machines arranged at 7 rough positioning stations, wherein a screw spot welding machine is respectively arranged at the second through fourth rough positioning stations from the front count, and three screw spot welding stations are distributed at three stations at one side of the production line before and after the three screw spot welding stations; two sides of each station of the fifth to seventh coarse positioning stations are respectively provided with a foot spot welder, six foot spot welders are distributed on three stations behind the screw spot welder, and each spot welder is connected to a triaxial motion system; the diameter adjusting frame is rotationally connected to the base through a diameter adjusting shaft, the base is fixedly connected to the planar biaxial movement mechanism A, a diameter adjusting frame driving motor for driving the diameter adjusting frame to rotate is arranged on the base, a base in the fine positioning mechanism is connected to the biaxial planar movement system B, the biaxial planar movement mechanisms are all screw-driven sliding table mechanisms, and a positioning frame shaft driving motor for driving the positioning frame shaft to rotate is arranged on the base; the rotary driving power device connected to the diameter adjusting plate is a diameter adjusting motor, the center of the diameter adjusting plate is fixedly connected with a central shaft, the diameter adjusting motor directly drives the central shaft or drives the central shaft through a transmission mechanism, and the transmission mechanism is in belt transmission or gear transmission or chain transmission.

2. The air conditioner chassis automatic welding production line according to claim 1, wherein: the number of the vibrating discs is 2, the vibrating discs in the two groups are alternately arranged, the number of the material passing slits is 6, the rotation driving device is a material cutting disc driving cylinder, one end of the material cutting disc driving cylinder is hinged on the frame, the rod end of the cylinder is connected with a joint bearing, and a shaft connected with the material cutting disc is arranged in the joint bearing in a penetrating way; the blanking pipe is two sets, holds in the palm the material pipe upper end and is provided with Y shape tee bend, and every two blanking pipes that are in different sets adopt the hose to pass through Y shape tee bend intercommunication same holds in the palm the material pipe, the material seam of passing be the arc, the blanking pipe upper mouth be big-end-up's horn mouth, install a plurality of grooved wheels in the periphery of blank dish, the blank piece is located the inslot of grooved wheel.

3. The air conditioner chassis automatic welding production line according to claim 1, wherein: 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, the head part falls on the elastic sheet, and the material supporting device is arranged in a material supporting pipe or is arranged in the following mode: the cylinder frame is fixedly connected to the lower end of the material supporting pipe, the cylinder frame is provided with a material passing hole communicated with the material supporting pipe, and the material supporting device is arranged in the material passing hole.

4. The air conditioner chassis automatic welding production line according to claim 1, wherein: the material supporting device comprises at least three marbles uniformly distributed along the circumference, a marble hole is formed in the hole wall through which the screw falls, the marble hole is close to the lower end of the material supporting pipe, the diameter of the marble hole is smaller than that of a radial shaft of the marble hole, a spring is arranged on the radially outer top of the marble, the outer end of the spring is tightly pressed through a bolt screwed in the marble hole, when the screw falls, the rod part penetrates through the holes among the three marbles, the head part falls on the marble, and the marble is spherical or ellipsoidal.

5. The air conditioner chassis automatic welding production line according to claim 1, wherein: a material induction photoelectric switch is arranged on the frame near the tail end of the crack track and connected to a control system, and a magnetic switch is arranged on the clamping jaw cylinder and connected to the control system.

6. The air conditioner chassis automatic welding production line according to claim 1, wherein: the screw feeding system also comprises a vibration disc distributing device, the vibration disc distributing device comprises a total vibration disc machine, the total vibration disc machine is located above each vibration disc, a hopper with three distributing holes is arranged at the bottom of the discharging channel of the total vibration disc machine, the hopper is divided into three parts by three separation discs, one distributing hole is arranged between every two separation discs, the hopper is connected to the output of the distributing motor, a discharging chute is arranged below the discharging hole of the hopper, a baffle is arranged between every two discharging chutes, the baffle is located between the two discharging chutes, the baffle and the discharging chute are fixedly connected to a conversion frame, the conversion frame is rotatably connected to a shaft taking the center of the hopper as an axis, a rotation driving device is connected to the conversion frame, and after the rotation driving device drives the conversion frame to rotate, the outlet of the discharging chute is switched to be connected with the inlet of the 3 vibration discs of the other group.

7. The air conditioner chassis automatic welding production line according to claim 1, wherein: the rear ends of two coarse positioning cylinders positioned on one side of the chassis in the coarse positioning mechanism are hinged on the frame, the rear parts of the coarse positioning rods are in V shapes, the coarse positioning rods are rotationally connected on the frame, the rear ends of two coarse positioning cylinders positioned on the other side of the chassis are hinged on the adjusting plate, the adjusting plate is slidingly connected on the frame in the left-right direction, the coarse positioning rods on the side are rotationally connected on the adjusting plate, racks are fixedly connected on the adjusting plate, gears are matched with the racks, and the gears are connected on an output shaft of an adjusting motor of the adjusting plate.

8. The air conditioner chassis automatic welding production line according to claim 1, wherein: the three-axis transfer device is characterized in that a main sliding block and an auxiliary sliding block are slidably arranged on a sliding rail at the tail end of the three-axis transfer device, the main sliding block is driven by a driving system in the three-axis transfer device, two electromagnet suction heads are respectively fixedly connected to the sliding block through mounting frames, 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.