Background technology:
At present, in modern production factory, use screw in a large number as retaining element based on assembly process.Often hand takes screwdriver to take messy screw, is one and bothers very much time-consuming job, therefore needs the automatic transport screw to control position.In the prior art, Chinese patent has been announced a kind of device of automatic transport screw for No. 93209244, it is the device that Purely mechanical is carried screw, but though automatic transport, but what use is the band cartridge screw part of serial arrangement on band, can not overcome the difficulty that a large amount of operations are taken screw, and its complex structure, defectives such as the volume of mechanism is bigger, and floor area is big.
At this type of situation, the applicant is devoted to research and design in this respect always, in the process of constantly bringing forth new ideas, grinds finally to discover for the first time and understands the simple and convenient mechanism that can realize the screw automatic feeding.
The utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of screw automatic feed mechanism is provided, and is used for the auto arrangement and the conveying of screw, takes the difficulty of screw in a large number to overcome assembly process, shortens activity time, reduces and waits for, has improved efficient.
The technical scheme that the utility model solves prior art is: a kind of screw automatic feed mechanism, comprise a frame, bevelled screw conveying is installed on the frame, the ramp of screw conveying is provided with a width greater than screw thread post external diameter and less than the groove of screw head external diameter, so, screw can be arranged on the groove to the direction suspention along guide rail length; And also cooperate in the guide rail low level feed arrangement is installed;
--feed arrangement, be fixedly arranged on the downstream of guide rail, comprise be provided with the corresponding rail end of plup inlet blow the material assembly, along the groove that has on the central axis that blows the material assembly with the screw coupling, groove and plup inlet conducting, by the driving end that is pressed into cylinder, is pressed into cylinder that is pressed into the cylinder block supporting be provided with screw pressing that the non-magnetic material of a corresponding plup inlet makes, near being pressed into the magnet that is provided with in the side of cylinder, passing and blow material assembly and groove perforation and be positioned at compressed air valve below the plup inlet.Certainly, the actuating unit of feed mechanism also can wait with electric machine or hydraulic efficiency gear and replace cylinder.Screw is by freely gliding in guide rail, screw slides to the plup inlet of air blowing assembly by deadweight, when screw will arrive the plup inlet of air blowing assembly, the magnet of ensconcing in the air blowing assembly is attracted to screw in the pan feeding aperture, make screw reversing or bounce-back can not occur, guaranteed the state consistency before screw enters the air blowing assembly, by being pressed into cylinder screw has been pressed into the air blowing assembly and makes screw be blown into down station by the compressed air valve compressed-air blows again.
According to the cooperation mounting process requirement of workpiece, groove of the present utility model aperture Φ is between the 6d/5~7d/5 of screw head diameter d.
In order to make screw on guide rail, quicken landing, also be provided with the shaking device that makes screw quicken landing in the bottom of guide rail; Described shaking device is the fixedly cylinder block that is fixedly arranged on the guide rail downstream, be installed on the vibrations cylinder on the fixing cylinder block.By of the lasting vibrations of vibrations cylinder, quickened the landing speed at guide rail of screw to guide rail.
According to actual installation situation required on the assigned line, generally all more screw need be installed, in order to improve the installation effectiveness of screw, one or more guide rail is installed on frame, supporting have at least one cover shaking device to shake guide rail, this mechanism can once send one or many screws to different stations at least, specifically decides by actual requirement.
In order to guarantee that screw during landing, reversing can not occur from guide rail, on every guide rail, be fixed with the non magnetic press strip at screw row top, the distance of this press strip and guide rail upper surface is a bit larger tham the screw head height, like this, just can reduce the error rate of installation effectively.
In order to guarantee the smooth landing of screw, the angle of guide rail and day water horizontal line is 15 °-60 °.
The principle of work of feed mechanism of the present utility model is: the accommodation section is supplied with a row screw and is freely glided from the guide rail plate, under of the lasting vibrations of vibrations cylinder to guide rail, screw slides to the plup inlet that blows afloat assembly by deadweight, when screw will arrive the plup inlet of air blowing assembly, the magnet of ensconcing in the air blowing assembly is attracted to screw in the pan feeding aperture, make screw reversing or bounce-back can not occur, guaranteed the state consistency before screw enters the air blowing assembly, by being pressed into cylinder screw has been pressed into the air blowing assembly and makes screw be blown into down station by the compressed air valve compressed-air blows again.
The automation of the employing fully control operation of feed mechanism of the present utility model, it is simple in structure, only used less cylinder and guide rail etc. just to realize the automatic feeding of screw, made things convenient for the operation of installing, not only reduced the volume of production cost and mechanism, and having improved the efficient of work, the reliability height is difficult for makeing mistakes.
The specific embodiment:
Below in conjunction with description of drawings embodiment of the present utility model.
Embodiment 1
As Fig. 1, shown in Figure 3, a kind of screw automatic feed mechanism, comprise a frame 11, be equipped with 4 guide rails 12 of 30 ° screw conveying on the frame, the ramp of every screw conveying is provided with a width greater than screw 2 threaded column external diameters and less than the groove of screw head external diameter, and so, screw can be arranged on the groove to the direction suspention along guide rail length, be fixed with the copper press strip 13 at screw row top on every guide rail, the distance of this press strip and guide rail upper surface is a bit larger tham the screw head height; And also cooperate in the guide rail low level feed arrangement is installed;
--feed arrangement, as shown in Figure 2, be fixedly arranged on the downstream of guide rail, comprise that being provided with blowing of the corresponding rail end of plup inlet expects assembly 61, has the groove 62 that mates with screw on the central axis of expecting assembly along blowing, the aperture of groove is 13/10 of a screw head diameter, groove and plup inlet conducting, by the driving end that is pressed into cylinder 81, is pressed into cylinder that is pressed into cylinder block 82 supportings be provided with the copper screw pressing 83 of a corresponding plup inlet, near being pressed into the strong magnet 7 that is provided with in the side of cylinder, passing and blow the material assembly and connect with groove and be positioned at compressed air valve 9 below the plup inlet.
The accommodation section of present embodiment is supplied with a row screw and is freely glided from the guide rail plate, under of the lasting vibrations of vibrations cylinder to guide rail, screw slides to the plup inlet that blows afloat assembly by deadweight, when screw will arrive the plup inlet of air blowing assembly, the magnet of ensconcing in the air blowing assembly is attracted to screw in the pan feeding aperture, make screw reversing or bounce-back can not occur, guaranteed the state consistency before screw enters the air blowing assembly, by being pressed into cylinder screw has been pressed into the air blowing assembly and makes screw be blown into down station by the compressed air valve compressed-air blows again.This mechanism can once send four screws to different stations.
The above, it only is preferred embodiment of the present utility model, be not that structure of the present utility model is done any pro forma restriction. every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.