DE2234566C3 - Separation device for a feed device for components with head and shaft, in particular screws - Google Patents

Description

characterized in that the exceptions are.

mung (57a) an obliquely to the slide extend- From US-PS 21 92 103 is a separation vor-

the slot of a width is known to be larger than the direction in which the slide is located below

SL-Haftdurchreesser and smaller than the head & at an angle to the direction of the slide

knife is; that on the slide (25, 26) guide slot for a component has its width

facing away from the slide (57) a pair of pliers is adapted to the component shaft. With this facility

with two separate, resilient in the furnace position is avoided that more than one component is in the

pressed jaws (64,65) is arranged, the recess of the slide forcing into it; however must

Forceps opening aligned with the chute channel 20 even with this device at relatively minor

and above the opening (55) of the receiving device, changes in the component shape of the slides have been

(71) is arranged; and that the drive mechanism can be seen and adjusted accordingly,

one with the slide (57) and a locking strap from US-PS 2611911 and 3339799 are

gel (68) connected piston (51), which is known in separating devices that are used for cylindrical

one of a housing block (47) of the separators 25 see components are provided. This is done by sideways

cylinder space (52), which can be pushed forward, fingers or pistons each second

is movable. wherein the locking bolt (68) with the first component against the side wall of a channel

Jaws (64,65) is coupled. pressed, what the separate promotion of the individual

2. Device according to claim 1, characterized in that the lower component is made possible. This facility draws that the coupling between locking bolt 30 no longer works reliably for cylindrical and jaw balls (69, 70), each component having variable cross-section because then Ball between a rear inclined surface (646, by pressing against the side wall of the channel 656) a jaw, a recess (68c, 686) in which canting occurs.

Locking bolt (68) and one in the housing block (47) From DT-PS 5 70 202, finally, a single one is formed Tread is captured. 35 known treatment device in which the on a slide

3. Device according to claim 1 or 2, characterized in that incoming components · V against in the slide channel transversely characterized in that the slot is separated by two retaining pins projecting towards the conveying direction of the components te parts (57c, 57a) of the slide is formed, which start in. The one behind the other in the conveying direction Guide plate (57f>) are anchored. orderly retaining pins have a spacing equal to that of the

4. Device according to one of the preceding 40 shaft diameters. By alternating Claims, characterized in that one slot retracts one and the other retaining pin at its end facing the chute (25, 26), the components can be delivered individually. This a waiting area (62) for a component is widened. very simple device on the one hand does not work

5. Setup according to one of the preceding quickly enough and, on the other hand, also not with the Claims, characterized in that for the 45 necessary reliability, because above all components An adjustable piston (51) of the drive device with a very short shaft tends to slide over the retaining pins rer stop (54) for its open position of the slide away.

Pliers corresponding dead center position is provided. The invention is therefore based on the object of a

To create a separating device that provides a safe

50 Guide and separation of one component each with

Head and shaft from the stored series of components made possible and also as simple as possible

The invention relates to a separating device that is maintenance-free.

for components with head and shaft that are at the end of a

inclined, the components in series under the influence of gravity, this object is achieved according to the invention Kung feeding chute arranged, to a solved that the recess an oblique to the chute itself Receiving device for each individual component extending slot is of a width that is greater than is connected and one horizontally and transversely to the shaft diameter and smaller than the head slide slidable, knife with a drive device; that on the Seiu facing away from the slide has connected slide, in which one of the 60 of the slide is a pair of pliers with two separate, spring c Shape of the components corresponding recess is arranged in the oven position pressed jaws forms is. with the forceps opening on the slide kana

Aligned in the known from US-PS 27 54 860 and over the opening of the receiving front Lungseinrichlung is the lowest component which is arranged on the direction, and that the drive device Slide a stocked row of components on a 65 device one with the slide as well as a locking bar Slide plate on, which has reciprocating crosswise to the slide and connected piston, which is in one of a can be pushed forward and encloses one of the component shape housing block of the isolation device has anaeoasste recess. This occurs relatively NEN cylinder space is displaceable, where de

Locking bolt coupled with the jaws: st Since with this device the components are only guided by gripping their head section, the invention enables components with widely variable dimensions to be conveyed on the shaft. The lower gripping the head made it fights ^for emer the desired simple construction and avoids jamming of the components in tight pockets.

The invention enables several useful developments. So the coupling between Locking bolt and jaws have balls, each Ball between a rear inclined surface of a jaw, a recess in the locking bolt and one in the Housing block formed tread is captured. This enables a space-saving in the same way like common construction.

I recommend it! further that the slide consists of two separate parts, between which the slot is left free and in a guide plate are anchored So that the slot can be adapted relatively easily to greatly changed dimensions of the components will. At its end facing the slide, the slot can then become a waiting place for a component be widened.

The universal applicability of the invention Isolation device is increased by the fact that a for the piston of the drive device adjustable stop is provided for its dead center position corresponding to the open position of the pliers.

The invention is illustrated below with reference to the drawings described in detail. It shows

F i g. 1 a feed device for fastening elements in a perspective view, in the frame the separating device according to the invention can be used with advantage,

F i g. 2 shows a side view of the partially sectioned separating station,

F i g. 3 shows a plan view of the separating station with the piston in the retracted position,

F i g. 4 shows a cross section across the chute through the separating device with the piston retracted.

FIG. 5 shows a representation similar to FIG. 3, however with the piston pushed forward,

F i g. 6 shows a representation similar to FIG. 4. but with the piston advanced, and

F i g. 7 shows an exploded view of the separating device.

In the following description, the same parts are given the same reference numbers. A feeding device for fasteners with a separating station which is operatively connected to a driven screwdriver of known type, not shown, is so compactly housed in a box of essentially triangular shape that the entire device is advantageously portable. In Fig. 1, only the back side and the bottom are at la and Ib, respectively of such a housing Pictured "!. The feeder fastening means in this case consists essentially of an introduction part 10, 11, a drive part with a motor M, a chute 25, 27 and a separating station 63, 47, all of these parts being each supported by a framework designated as a whole by 1 and rising essentially upwards above a base plate 1b

The separation station is essentially intended to pull out of the row of screws that run over the track is fed to the chute, one very much Accordance with the working rhythm of the driven connected to the receiving hose 71,72 Screwdriver to this. The structure of the separating station is clearly shown in FIGS. 2 to 7 explained

Thereafter, the isolation station consists of a solid block 47 of an essentially prismatic, right-angled shape, which has a cylinder bore 47a of relatively small diameter and a cylinder bore 47b of larger diameter than the cylinder bore 47a. A piston rod 48 operates in the small bore 47a and is normally pressed to the left by means of a compression spring 49 which is arranged between the right end of the piston rod 48 and the inner closure of the bore 47a, so that a working chamber 50 results within the bore 47a

In the large bore 47 ώ, a piston 51 works with at least one piston surface 51a on the periphery of the piston in the bore 47b . The piston surface 51a of the piston 51 defines a first working chamber 52 and a second working chamber 53 in the bore 47b. Di «, the first working chamber 52 communicates via an opening 526 with a suitable air source which continuously supplies air; the other working chamber 53 communicates via an opening 53a with the driven screwdriver via a pressure control provided in the screwdriver for the intermittent supply of compressed air in the same way as to the working chamber 52.

The piston 51 works in such a way that. so long no air is supplied to the second working chamber 53, he moves in to the right under the action of compressed air the first working chamber is pressed; when compressed air is supplied to the second working chamber 53 it is pushed to the left. This is possible because the pressure-receiving surface of the Piston surface 51a, which points towards the first working chamber 52, is smaller than that which faces the working chamber 53 shows which mode of action is otherwise known to the person skilled in the art.

F. an adjusting screw 54 is screwed through the base body 47 and has one end in the large bore 53 into it, while its other end is formed into a rotary knob. By turning this Adjusting screw 54 can accordingly adjust the stroke of the piston 51 as desired. The one pursued with it The purpose will become clear from the following description.

The block 47 also has a channel having an opening 55 for the fastening elements, the upper portion of which is in the form of a slit with a gap 56a. its width slightly larger is, us the diameter of the shank of the fastening elements (Fig.7). The lower section of the canal is in the form of a hole 55b extending through the body 47. This lower section of the canal 55 communicates through the opening 53a mn the working chamber 50, specifically via the channels 56a unc 56b for reasons to be explained.

A slider 57 with a diagonally extending slot 57 "? has a sliding plate 57b with an opening 57 ^ of the same diameter as the channel 55 au and is mounted on the body 47 at 47 slidably! the sliding plate 57b having two blocks ^{57c and 57c / support 1.} These blocks 57c and 57d are attached to the respective! opposite edges shaped to form a diagonally extending slot 57s through which they

extends substantially over its entire width, the gap being substantially equal to or is slightly larger than the width of the slot 55a of the channel 55. It should be particularly noted that the Length of the block 57t /, which the slot 57a in cooperation with the corresponding edge of the other block 57c forms, is smaller than that of the block 57c by a value that is im is substantially equal to the spacing of the slot 57a to a waiting position 62 together with the Surface of the support plate 59 to form.

The sliding of the slider 57 is effected by a substantially square shaped connecting plate 58, which in turn is connected to an outer end of the piston 51 at 58a. The plate 58 is not only effective for transmitting the reciprocating motion of the piston 51 to the slider 57, but also limited the stroke of the piston rod 48, the outer end of which against the plate 58 under the action of the compression spring 49 presses.

In order to prevent a possible separation of the slider 57 from the body 47, a support plate 59 is provided, on one surface of which two brackets 59a and 596 are formed and the opposite, other surface is kept essentially flat to prevent the sliding movement of the slider 57 To put obstacles in the way. The support plate 59 is attached to the block 47 by two bolts 60a and 606 which can be screwed into corresponding holes 47c / and 47c in the body 47. As in particular from FIG. Refer 7, the blocks 57c and 57 d respectively openings 57e and 57 f on the bolts extending through the 60 and 606 by means of bearings 61a and 61 6, which are mounted in the openings 57e and 57 / "loose .

While the support plate 59 is attached to the block 47. as described in detail above the two brackets 59a and 596 are each connected to the front portion of the rails 25, 26 so that the track extends between the two brackets. Thus it should have become clear that the body 47 with the rails 25,26 over the clamps 59a and 596 communicates.

Note that the diagonally extending slot 57a has an entrance that communicates with the track the chute is connected, and has an outlet which is connected to the gap 55 a of the channel 55. the Slider 57 is designed so that it works in response to the reciprocating movement of the piston 51 so that that when the piston is withdrawn (Fig. 3, 4), the entrance of the slot 57a with the rail 25 cooperates, the waiting position 62 exactly with the space between the two rails 25 and 26 is aligned, and when the piston 51 is in an advanced position (Fig.5, 6) only the Exit of the slot 57a cooperates with the gap 55a

From the construction described so far, it follows that the fastening elements in a row the track of the slide are guided from the incidence section, and one after the other the upper opening of the channel 55 in response to the movement of the piston 51 are supplied so that the first member of the Row of fasteners in the waiting position 62 rests and from the subsequent fastener is separated by the wedge action of the beveled edges of the block 57c when the latter is to the left is moved. Thereafter, the first link of the fasteners moves along the slot 57a to the Exit of the slot 57a and then to the upper opening of the channel 55 guided by a Cover plate 63 (Figs. 1 and 2), the shape of which will be described later.

The body 47 also has a groove at 47f and two chambers 47g and 47k , each of which communicates with the groove 47f as shown. Two jaws 64 and 65, each with an edge 64a and 65a, respectively

ίο are equipped, are loosely arranged within the chambers 47g and 47it in such a way that the edges 64a and 65a can rest against the upper opening of the channel 55. These jaws 64 and 65 are acted upon in opposite directions by corresponding compression springs 66 and 67 within the associated chambers 47 ^ and 47 λ, so that the edges 64a and 65a can open the channel 55.

For the selective closing and opening of the channel 55 through the edges 64a and 65a of the jaws 64 and 65 a locking bolt 68 is provided which has two recesses 68a in a substantially central section and 68c with sloping surfaces 686 and 68c / respectively, the locking bar 68 in the groove 47 / body 47 is movable. This displaceable locking bolt 68 is provided at one end with a further groove 68e, in which the plate 58 engages so that the movement of the piston 51 can be transmitted to the bolt 68. A connection similar to that between the latch 68 and the plate 58 can also be established between the slider 57 and the plate 58 may be provided.

Two locking balls 69 and 70 sit in chambers 47g and 47A between the recesses 68a and 68c in the locking bar 68 and the beveled edges 646 and 656 of the jaws 64 and 65, so that only when the piston 51 is moved to the left (F i g. 5 or 6), the jaws 64 and 65 are moved towards one another, against the pressure of the compression springs 66 and 67 and essentially close the opening of the channel 55. Namely, when the locking bar 68 moves to the left under the action of the corresponding movement to the left of the piston 51, the balls 69 and 70 roll over the respective surfaces 686 and 68c / of the recesses 68a and 686 and cause the jaws 64 and 65 to move towards each other so that there is a configuration as shown in Fig.5. On the other hand, when the latch 68 is withdrawn to the right, the jaws 64 and 64 move away from each other under the influence of the compression springs 66 and 67, with the balls 69 and 70 falling into the corresponding recesses 68a and 68c in the latch 68.

Note that when the jaws 64 and 65 are in a position as shown in FIG. 5 the channel 55 essentially is closed and at the same time a certain gap between the edges 64a and 656 of the jaws 64 and 65 remains so that a fastener can rest with its head on the edges like a bridge.

The fastener retained by jaws 64 and 65 via respective edges 64a and 656

The element naturally falls into channel 55 when jaws 64 and 65 move away from each other, with hole 57g in slide plate SJb of slider 57 aligned with channel 55. Of course the bottom one is

opening of the channel 55 (Fig. 2) with a connection

* 5 pieces 71 connected, in turn via a appropriate hose or tube 72 (Fig. 1) in communication with the powered screwdriver The cover plate 63 has a substantially

U-shaped cutout 63./. the width of which is essentially equal to the diameter of the channel 55 or equal to the diameter of the head of a fastening element for which the feed device should be used. The cover plate 63 is for example with several locking screws on the Top of the body 47 is attached and holds the various elements within the corresponding Recesses of the body 47 together. When the cover plate 63 is attached to the body 47. should the U-shaped cutout 63; / arranged above the front end of the track of the chute and above the channel 55 while the guide extension 25 (Fig. 1) should be above this cutout 63./.

From the foregoing, it should be apparent that the isolation station operates in the following ways:

Assume that the first fastener, which has been passed down the track of the slide as the start of a series of fasteners. is in the waiting position 62, while the piston 51 is in the position shown in FIGS. 3 and 4 is the position shown, ie is withdrawn. The first fastening element can be separated from the subsequent fastening elements in the series by the bending action of the beveled edge of the block 57t ^{1 of} the slider 57 when compressed air is supplied to the second working chamber 53 of the larger bore 47i>, whereby the piston 5t extends to the left and a configuration as shown in FIGS. 5 and 6 is shown.

When the slider moves to the left due to a corresponding movement of the piston 51. the fastening element located in the diagonally extending slot 57; / is relative to the channel 55 led. Before this fastener arrives over the channel 55, the jaws 64 and 65 Merged due to a corresponding movement of the piston-driven locking bolt 68 to the left, so that the fastening element of the two edges 64; / and 65./ of the jaws 64 and 65 as described above came to be kept free, and / was / u the time when the piston 5t after its movement has completed on the left. At the same time, the piston rod 48 is moved to the left under the action of Compression spring 49. so that there is an air path from the channel 55, via the channel 56. the bore 47./ of smaller Diameter, through the channel 56 £> to / wide working chamber 53 results, whereupon compressed air from the / wide working chamber 53 in the lower section of the Channel 55 and then flows into line 72, whereby that fastening means which was previously fed to the line 72 and rests in it, the driven one Screwdriver supplied and the line 72 is made free.

When the compressed air supply from the compressed air source to / wide working chamber 53 through the opening 53; / stops, for example on one of the pressure control de :, The signal generated by the screwdriver is sent to the second working chamber 53 via the channel to atmosphere vented, which can be achieved, for example, by controlling the pressure of the screwdriver. then the piston 5t moves to the right due to the pressure gradient between the two chambers 52 and 53. If the piston moves to the right in the manner just described, it will result in a corresponding movement of the locking bolt 68. of the slider 57 and the piston rod 48 against the Compression spring 49, so that the retractor «54 and 65 move apart and thus the fastening element into the channel 55 and from there into the line 72. At substantially the same time, the connection is made / between the channel 55 and the second working chamber 53 interrupted by the piston rod 48, namely by closing channel 56a, creating a duty cycle the isolation station is complete.

For this purpose 3 sheets of drawings 109 615/20:

Claims (1)

Paientansorüche- frequent malfunctions either due to patent claims. the screws when moving the slide plate 1. Jamming separation device for components with head, or that more than one screw of the and shaft which at the end of an inclined, the components slider taken and into the receiving device be dropped in series under the action of gravity feeding 5 device. That can only be done in Chute arranged to be encountered to a limited extent on a receiving device in that is connected for a single component and the recess in the slide plate is very accurate a horizontally and transversely to the slide sliding component is adapted that has the other hand disadvantageous, associated with a drive device, that even with relatively minor deviations Has slider in which one of the shape of the io holes in the dimensions of the components of this A recess formed corresponding to the components is no longer reliably taken along with the slide