CN1047820A - The method of parts feeding and device - Google Patents

Abstract

The invention relates to and transmit and supply with as the method and apparatus of this class part of boss nut to a precalculated position.This device includes the telescopic reinforced bar of an outer shaft and interior axle, and a magnet places the end of one of diaxon.Reinforced bar at first all stretches to precalculated position or its final position, makes part be held and be fixed on axle head by magnet, when part is reached home, the relative displacement longitudinally of interior outer shaft, magnet leaves part, no longer part is produced magneticaction, makes part drop to its precalculated position in the gravity effect.

Description

The method of parts feeding and device

The present invention relates to supply with such as the boss nut charging process and feeding device that machine components such as short thick walled steel tube and raised head bolt are used.

With prior art like the present invention recently be, a disclosed technology in 59～No. 7549 communiques of Japanese Patent Publication, its main contents as Figure 12 and shown in Figure 13, now are described below.Interior axle 2 is contained in the hollow outer shaft 1 with state group slidably, on the front end face of interior axle 2, is fixing the magnet (permanent magnet) 4 of an adsorbent parts (boss nut) 3 usefulness.The outer sleeve 5 that is enclosed within outer shaft 1 outside is fixed on the static component 6, as shown in figure 12,1 pin 8 that is fixed on the outer shaft 1 embedded follows Cheng Fangxiang and be arranged in the guide groove 7 on outer sleeve 5 inner surfaces.The metal sheet 9 that is bonded is placed on the fixed electrode 10, and the pilot pin 11 of fixed electrode passes and reaches its top from the hole of metal sheet 9.

The end face of two axles 1,2 is come on the same plane, nut 3 is adsorbed on this plane.When two axles became the as a whole position that advances to regulation in this state, interior axle 2 just halted, and has only outer shaft 1 to move on individually, and nut 3(is as shown in figure 13) break away from magnet 4, this moment, the magnetic force to nut 3 disappeared in fact.So, nut 3 with just fly to pilot pin 11 after separate the lower end of outer shaft 1, in the screwed hole of pilot pin 11 inserted nums 3, so charging process leaves it at that.Also space displacement L is showed among Figure 13.

Prevent the above-mentioned interior axle 2 structure (not shown)s of advancing as follows, make the banking pin on the axle 2 in being fixed on, from the slotted hole that outer shaft 1 is left, stretch out, after two axles 1,2 advance to certain stroke, above-mentioned banking pin just is stuck on the static component 1, the being forced to property of forward travel of axle 2 ground is prevented in making, and has only outer shaft 1 still moving on, as shown in figure 13, the suction of 4 pairs of nuts 3 of magnet descends, and it is chimeric that nut 3 drops on the pilot pin 11 realization by inertia force.

Above-mentioned prior art in fact disappears to the attraction magnetic force of nut 3, thereby following variety of issue can occur owing to halt the back outer shaft still in the transitional period of advancing at magnet.First problem is, in the stage of having only outer shaft to move separately, because the suction of nut is reduced gradually, therefore, if nut was subjected to the time spent of doing of certain external force or vibration before the position that arrives defined, what nut will meet accident falls, thereby causes reinforced error.The 2nd problem is, this charger system depends on the substantive extinction tests to the suction of nut, because the difference of weight and the viscous effect that is attached to the oily substance on the nut, is not changeless and make nut with the time that outer shaft separates, therefore, it is also inconsistent apart from length that nut moves in the space, and this brings harmful effect for the stability of charging precision.Because above-mentioned displacement does not wait.So in order to adapt to the needs of maximum length, length setting must be got longerly slightly, and this also can make space displacement elongated, and forms the reason of reinforced error.

In addition, above-mentioned this prior art, owing on the nut 3 screwed hole is arranged, so the suction of 4 pairs of nuts of magnet can not fully work.In addition, magnet 4 will be installed on the interior axle 2, so the size of magnet also is subjected to certain restriction.Also have a shortcoming to be, 3 end faces with axle 1,2 of nut contact, in a single day so be subjected to the time spent of doing of certain external force or vibration, nut 3 can be offset by occurrence positions, has destroyed the conformability between screwed hole and the pilot pin 11, thereby nut 3 can be flown by pilot pin 11 bullets.

The reason that the problems referred to above take place is because the structural defect that exists aspect being provided with at magnet causes.That is to say, prior art is that magnet is fixed on interior axial end, as shown in the figure, so it can not have enough strong attraction magnetic force for the nut that screwed hole is arranged, thereby what above-mentioned the sort of external force or vibration were arranged makes time spent variety of issue such as just can take place that nut falls.

Even more important problem is if attract the magnetic force deficiency, just can not improve the pace of supplying with rod member, so very unfavorable man-hour for shortening component delivery.

Main purpose of the present invention is that a kind of part charging process and feeding device that can address the above problem is provided.

A kind of pattern of the present invention is, part is being close on the device reinforced on the reinforced bar, the magnet of suction in the lateral surface of part, be arranged on the position that protrudes in outside the reinforced bar with the possible state of advancing and retreat, reinforced bar arrive the purpose position and after stopping to move or with stop the roughly while, above-mentioned magnetite is retreated.Against the suction of the magnet that acts on the part lateral surface, in reinforced bar advances, acting on changeless attraction magnetic force, and after part arrives the purpose position or with arrival, suction is being disappeared, reinforced to finish to the purpose position.Therefore, before reinforced bar arrives the purpose position, the suction of part is remained on a changeless value always, in moving so even part has external force or vibration to act on the part, part also is difficult for coming off from reinforced bar front end.In addition, owing to the part of reinforced bar front end be arrive the purpose position stop to move the back or with stop roughly simultaneously, make that magnet is mandatory to be retreated, thereby part often was consistent from position, the time that reinforced bar breaks away from, can realize the stable supplying of part.Particularly, part is after arriving the purpose position, and magnetic force disappears, and for example, part is broken away from, and so just can avoid the reinforced error of part fully.

Another pattern of the present invention is as follows: provide a kind of part is close to reinforced bar reinforced on the end face, the magnet of suction on the part lateral surface, be arranged on the position that protrudes in outside the reinforced bar with the possible state of advancing and retreat, a jut that keeps the part outside be set at reinforced bar front end.Against the maintenance effect of the suction that acts on the magnet on the part lateral surface and jut to the part outside, the purpose position is sent in the position that part is stabilized in the bar front end, and the effect that retreats of borrowing magnet disappears the suction that keeps part, and realizes the feed to the purpose position.Because magnet is the form that protrudes in the reinforced bar outside, so the size of magnet can design more as required as far as possible, can not occur attracting the problem of magnetic force deficiency like this.In addition, the jut that keeps part to use has the maintenance function, thereby can correspondingly design magnet smallerly.Moreover, because the outside that keeps part with jut, thus even have certain external force or vibration to act on part, the absorption position skew of part also can not take place, or phenomenon such as fall unexpectedly.

Another kind of pattern of the present invention is as follows: part is close in the device that reinforced rod end surface feeds in raw material, under the posture that vertical direction is kept tilting, support reinforced bar with the possible state of advancing and retreat, with a suction in the magnet of part lateral surface, at the position that protrudes in outside the reinforced bar, with the possible state of advancing and retreat, be arranged on below the tilting reinforced bar, the setting of the reinforced passage of part, part is entered towards the magnet of outstanding state, when reinforced bar advances back part disengaging, magnet is retreated.Below tilting reinforced bar, catch part by attraction, can reinforced bar be advanced like this, and the backward movement by magnet disappears the attraction confining force to part, realizes the feed to the purpose position exactly.Because reinforced bar is tilting, and magnet configuration below tilting reinforced bar, so be to attract to keep part from the reinforced passage of part in the mode of tackling from below, like this, part is firmly held in the front end of reinforced bar, can the holding position be offset because of certain external force or vibration, as mentioned above, the interception function of the tilting and magnet by reinforced bar and, when making the part disengaging, magnet is retreated after reinforced bar advances by the part that firmly attracts to keep, make the actual disappearance of suction, therefore, part is broken away from exactly from reinforced bar, improve reinforced reliability significantly.

The present invention also has a kind of pattern, promptly part being close to reinforced rod end surface carries out in the device of feed, suction is arranged on the position that protrudes in outside the reinforced bar in the magnet of part lateral surface with the possible state of advancing and retreat, in near reinforced bar forward stroke terminal the way of advancing, above-mentioned magnet is forcibly retreated.Against the suction of the magnet that acts on the part lateral surface, in the process that reinforced bar advances, provide changeless powerful suction, part is before arriving the purpose position, and bar makes the suction of magnet rapidly disappear in advancing, and realizes feeding in raw material to the purpose position.

Above-mentioned and other all feature of the present invention can further be promoted mutual understanding with reference to following relevant accompanying drawing.

Fig. 1 is the profilograph of part feeding device;

Fig. 2 is II-II profile of Fig. 1;

Fig. 3 is the oblique view of reinforced rod end surface;

Fig. 4 is IV-IV profile of Fig. 2;

Fig. 5 is the side view of switchboard;

Fig. 6 is the side view of feeding device outward appearance;

Fig. 7 is an example of the reinforced boom end of the remodeling identical with Fig. 3;

Fig. 8 is the profilograph of another embodiment of the present invention;

Fig. 9 is the side view of other embodiments of the invention;

Figure 10 is the profilograph of other embodiments of the invention;

Figure 11 is side views identical with Fig. 9, other embodiments of the invention;

Figure 12 and Figure 13 are respectively the profilograph that the explanation prior art is used.

At first, to Fig. 1 to embodiment illustrated in fig. 5 being described as follows.This is the situation of a kind of mash welder shown in Figure 6, the part of the steel plate 12 that is welded is placed on the fixed electrode 12, the pilot pin 14 of this electrode is the state that stretches out in above the part of the steel plate 12, and symbol 15 refers to one and is arranged on movable electrode on same with fixed electrode 13.

With a reinforced assembly 16 of assembling reinforced bar, be connected on the feeder sleeve 18 of boss nut (situation when adopting the boss nut in the present embodiment) 17, and be connected with pneumatic linear actuator 19.Nut 17 shown in Fig. 1 chain-dotted line is close on the end face of reinforced bar 20, and is provided with the jut 21 from outside retention nut 17.Jut shown in the figure 21 is " a frame of " " font.Reinforced bar 20 usefulness stainless steels are fabricated to suitable.

The magnet 22 that nut 17 lateral surfaces is applied suction, be configured in the position that protrudes in outside reinforced bar 20 end faces, can advance and retreat mobile with respect to reinforced bar 20.In this embodiment, move in order to make magnet 22 realize advancing and retreat, the bar 20 that will feed in raw material is designed to inside and outside double-layer structure, so reinforced bar 20 itself is a hollow shaft 23, a slidably interior axle 24 is inserted in its inside.With magnet 22 be linked to one with the contacted slide mass 25 of hollow shaft 23 lateral surfaces on, interior axle 24 and bolt 26 of slide mass 25 usefulness are connected into an integral body.Have a slotted hole 27 in hollow shaft 23 upper edge stroke directions, from then on above-mentioned bolt 26 passes in the slotted hole.

The lower surface of interior axle 24 and the lower surface of hollow shaft 23 constitute same plane, can be close on the nut 17, imbed a small permanent magnet 28 in interior axle lower end, are used to produce a less suction that makes progress.

To feed in raw material bar 20 folding and unfoldings in an overcoat 29, leave the space between the two, as shown in the figure.Overcoat 29 top linking a pneumatic linear actuator 19, welding a feeder sleeve 18 below.The piston rod 30 of pneumatic linear actuator 19 is linked on the reinforced bar 20.On the axle 24, this pin passed the slotted hole of opening along the stroke directions of hollow shaft 23 32 in banking pin 31 was fixed on, and stretched into reinforced bar 20.Insert the helical spring 33 in the hollow shaft 23, internally axle 24 is exerted pressure, and to the restriction of this pressure, is to realize by the stop limits pin 31 of slotted hole 32 lower ends.

Add and stop to move after material bar 20 advances to prescribed stroke.That is to say that part arrives behind the purpose position or magnet 22 is retreated, a drive unit 34 is installed at the lateral surface of overcoat 29.Though this drive unit also can adopt solenoid, but used herein is pneumatic linear actuator 35, be fixed on a catch 37 on the piston rod 36 of this cylinder, being passed in the slotted hole 38 that overcoat 29 upper edge stroke directions open stretches in the overcoat 29, be configured in the position relative, so that banking pin and catch are bumped against with above-mentioned banking pin 31.

As can be seen from Figure 2, reinforced bar 20(hollow shaft 23) both sides form two planes 39,40, thereby become the section configuration of a drum, embed just and open within the through hole 42 on the upper plate 41 of charge pipe 18, and adopted the spline measure.Upper plate 41 is provided with the opening 43 of folding and unfolding slide mass 25.

The section of charge pipe 18 is rectangles, and its end has an excision portion 44 as shown in Figure 1, and is provided with two forked tabs 45, and 46(sees Fig. 4), be fixed on articulated two switchboards 49,50 on the pivot 47,48 herein.That is to say that a fan of hinge is as switchboard 49,50, and another fan is fixed on the tab 45,46 as fixed head 51,52 usefulness bolts 53,54.The helical spring 55(Fig. 5 that is assembled on the pivot 47,48 only represents pivot 47) elastic force of applying closing direction for switchboard 49,50, to keep state shown in Figure 4.State when the chain-dotted line of Fig. 5 represents that switchboard 49 is open.Because the bottom of reinforced bar 20 is in the above described manner in through hole 42, so (nut 17 that is part feeder channel 18 enters reinforced bar towards magnet 22 from feeder sleeve.It more than is the formation of present embodiment.

The working condition of the foregoing description is described as follows.The nut that is promoted by compressed air etc. moves feeder sleeve 18 in, and when near the end of coming feeder sleeve 18, magnet 22 attracts nut 17 and importing jut 21, shown in the chain-dotted line of Fig. 1 and Fig. 4.Then, when reinforced bar 20 advances, by nut 17 switchboard 49,50 is pushed open, nut 17 advances under the state that is attracted by magnet 22 and keep, and the position of coming the pilot pin 14 that approaches fixed electrode just stops to move.After this, pneumatic linear actuator 35 is started working, when catch 37 is upwards drawn, through banking pin 31, after interior axle 24, bolt 26 are delivered to slide mass 25 with displacement, another magnet 28 of magnet 22(is also simultaneously) separate with nut 17, therefore, in fact the attraction magnetic force of nut 17 disappeared, pilot pin 14 passes the screwed hole of nut, like this, the reinforced process of nut leaves it at that.

When the action of reinforced bar 20 allows to realize feeding study on period with lower speed, also can be through period of very short a period of time after reinforced bar 20 stops to move the period that magnet 22 retreats; But under the situation that above-mentioned feeding study on period is shortened, stop to move haply maintenance with reinforced bar 20 period that magnet 22 is retreated is suitable synchronously.The connotation of said here " synchronous haply " is, stop slightly than reinforced bar 20 before a bit, with stop fully synchronously or still be broad than stopping further along equal time band territory.

Embodiment illustrated in fig. 7 is the example that the jut of reinforced boom end is retrofited, jut is " recessed " font among the top embodiment, but this example is to be provided with two juts 56 to configuration state in the outside of nut, 57, and magnet 22, as shown in Figure 7, opening portion is sealed, magnet 22 directly contacts with nut 17.

As shown in Figure 8, the support pattern of reinforced bar 20 is to make itself and vertical direction keep an oblique angle, in this case, is with magnet 22 nut 17 to be blocked to realize attraction and to keep from bottom.

Embodiment illustrated in fig. 9ly be, make magnet 22 produce a kind of device of advance and retreat action, have good sliding, drive rod 58 is set up between the guide 59,60 in order to make between drive rod and the reinforced bar 20 by the drive rod 58 of reinforced bar 20 arranged outside in an edge.Between the flange 62 of the flange 61 of guide 59 and reinforced bar, clamp a helical spring 63,, embed in the groove 64 that reinforced bar 20 stroke directions in an edge form, with the pulling force of restriction helical spring 63 the pin 65 that is fixed on the guide 59.20 one-tenth on whole reinforced bar is as a whole and advance, and after stopping to move to the purpose position, its action is same as the previously described embodiments, therefore, keeps off former 37 flange 61 is forcibly retreated.In addition, in this embodiment, before the reinforced bar 20

In, the fore-end of reinforced bar 20 is not provided with the sort of jut 21 of the foregoing description and is equivalent to the member of magnet 28, and just forms a planar end surface.

Embodiment illustrated in fig. 10 is the situation of removing above-mentioned drive unit, and the form that it is taked is that the way that tangles by banking pin 31 and static component makes magnet 22 produce relative retreating.As one of this static component simple example is that one to the urceolus 29 inboard protrusion tabs 56 that extend.The working condition of this form is, magnet 22 stops to move the reinforced bar 20 in back and is still advancing, after nut 17 leaves magnet 22 certain distances, to substantive disappearance of magnetic attraction appearance of nut, break away from from jut 21 by inertia force when nut and reinforced bar 20 stop to move, be sent to pilot pin 14.In addition, in the structure of this embodiment, magnet 28 as described above is not set, in not making yet axle 24 lower end protrude in reinforced bar below.

Embodiment illustrated in fig. 11ly be, make magnet 22 produce a kind of device that advance and retreat are moved, have good sliding, drive rod 59 is set up between the guide 60,61 in order to make between drive rod and the reinforced bar 20 by the drive rod 559 of reinforced bar 20 arranged outside in an edge.Between the flange 63 of the flange 62 of guide 60 and reinforced bar, clamp a helical spring 64,, embed in the groove 65 that reinforced bar 20 stroke directions in an edge form, with the pulling force of restriction helical spring 64 the pin 66 that is fixed on the guide 60.Behind 20 one-tenth as a whole advancing of whole reinforced bar, prevent flange 62 to advance, so just finished and same reinforced process shown in Figure 10 by protrusion tab 56.

More than the practice among each embodiment be, attracted the nut 17 of reinforced bar 20 front ends and remain on by magnet 22, arrive from the very near assigned position of fixed electrode pilot pin 14 and after halting, or magnetic pull is disappeared with halting, but also can near the way of advancing the forward stroke terminal suction be disappeared.From top explanation and the diagram as can be known, magnet is at the position that the part lateral surface is applied suction, promptly under the state that is close to reinforced bar lateral surface, doing the advance and retreat action, so the size of magnet itself is enough big, can guarantee strong suction and confining force, part can not fall because of the effect of certain external force or vibration, and the speed of the reinforced throw of lever is not worried the position skew that part takes place fully yet or phenomenon such as fall even improve.If the magnetic force of strong permanent magnet in order substantially to eliminate the magnetic force that acts on part, must make to keep a distance quite far away between magnet and the part.Therefore, near the way of still advancing the terminal of forward stroke, i.e. stage in early days, make magnet motion round about forcibly, so just can be in distance according to the above-mentioned length of acquisition in the time.In other words, Here it is is added to state on the reinforced bar pace to the counter motion speed of magnet, so effective to the shortening time, magnetic attraction also rapidly disappears, like this, part breaks away from from reinforced bar through certain position of being everlasting, and can obtain not have the high reliability of reinforced error.As mentioned above, to break away from the position often constant because of part, thereby can make the distance that stops between position and purpose position (as the pilot pin of fixed electrode) of reinforced bar very little, so solved the excessive problem of distance shown in Figure 13 " L ".

Though the present invention has been done above explanations, it is evident that it to be changed over various form.And this change does not break away from design of the present invention and scope.

Claims (4)

1, a kind of part is close to the part charging process that reinforced rod end surface is fed in raw material, it is characterized in that: the magnet with suction that will act on the part lateral surface, be arranged on the position that protrudes in reinforced bar front end with the possible state of advancing and retreat, after reinforced bar arrives the purpose position and halts, perhaps when halting haply synchronously, above-mentioned magnet is forcibly retreated immediately.

2, a kind of part is close to the reinforced bar of part that reinforced rod end surface is fed in raw material, it is characterized in that: the magnet with suction that will act on the part lateral surface, be arranged on the position that protrudes in reinforced bar front end with the possible state of advancing and retreat, be provided with the jut in a maintenance part outside at the front end of reinforced bar.

3, a kind of part is close to the tilting advance and retreat formula part feeding device that reinforced rod end surface is fed in raw material, it is characterized in that: vertical direction is had an inclination angle and the possible state of advancing and retreat is being supported reinforced bar, with suction magnet outside part, at the position that protrudes in reinforced bar front end, with the possible state of advancing and retreat be arranged on tilting reinforced bar below, the part feeder channel is arranged to the mode that part can advance towards the magnet that is outstanding state, when reinforced bar advances and make the part disengaging magnet is retreated.

4, a kind of part is close to the part charging process that reinforced rod end surface is fed in raw material, it is characterized in that: the magnet with suction that will act on the part lateral surface, be arranged on the position that protrudes in reinforced bar front end with the possible state of advancing and retreat, in near the way of advancing of the reinforced bar forward stroke terminal point, above-mentioned magnet is forcibly retreated.

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