WO1980000935A1

WO1980000935A1 - Installation to fix washers on the rod of a bolt

Info

Publication number: WO1980000935A1
Application number: PCT/DE1979/000126
Authority: WO
Inventors: H Schmitz; V Boellinghaus
Original assignee: Hilgeland Geb; H Schmitz; V Boellinghaus
Priority date: 1978-10-30
Filing date: 1979-10-23
Publication date: 1980-05-15
Also published as: IT7904845A0; DE2847143A1; IT1165888B

Abstract

The installation (1) to fix washers (3) on the rod of bolts (16) comprises a device to transport the bolt (16) along a predetermined path and a fixing device for the bolt (16) and the washers (3): this fixing device is located at the end of a channel for transporting the washers (3) and it is substantially comprised of a base piece (78) and an upper piece (80). The upper piece (80) is still and cannot move; the base piece (78) is ended at about half the diameter of the washer in recess of the upper piece (80).

Description

State of the art

The invention relates to a device for attaching discs and. Like. On the shafts of bolts and. Like., Which initially has a transport device for transporting bolts aligned in a predetermined position along a predetermined path, which furthermore has a connecting device for bolts and washers extending into the path of the bolts, which connecting device completes a device provided for transporting washers Forms transport channel and essentially consists of an immovable base body with a support lever which is approximately resilient to the plane of the base body and resiliently resiliently mounted transversely to this plane and a cover opposite the base body with support lever. Body with a recess allowing the passage of a bolt shank and with a guide groove for disks which is enclosed by the base body and cover body and which extends into the guide groove approximately in the region of the free end of the support lever and has a guide groove facing the guide groove inclined inclined surface and which also has a guide channel adjoining the guide groove of the connecting device for bolts provided with disks. Such a device is described in DE-OS 22 38 439 ^' .

During operation of the known device, it has been found that, for various reasons, the connection of disks with bolts with the aid of the connecting device provided for this purpose sometimes does not succeed as required or is at least associated with considerable difficulties. On the one hand, it can happen that Schei¬ ben u. Like. Not be put on the relevant bolt shafts as intended, on the other hand, it can happen that disks get jammed in the area of the connection point with elements of the connection device. These difficulties occur particularly when not smooth, but z. B. corrugated washers, toothed rings or spring washers are to be connected with bolts.

task

The present invention has for its object to improve the known device in the area of the connection point of bolts and washers such that washers,

A. or the like in a predetermined, desired manner.

Furthermore, the removal and attachment process can be further improved by the fact that, according to claim 3, the support lever is mounted on the base body so as to be pivotable about an axis, which lies above the conveying plane of the disks.

Explanation of the invention

The known device and an exemplary embodiment of the device according to the invention are explained in more detail below with reference to FIGS. 1 to 8 of the drawing.

Show it

1 shows a known device schematically and in dts top view,

2 shows the device according to FIG. 1 in a side view in section corresponding to section line II-II in FIG. 1,

3 is a top view of a connecting device for washers and bolts,

4 shows the connecting device according to FIG. 3 in section according to section line IV-IV in FIG. 3,

Fig. 5 shows the connecting device according to Fig. 3 in side view

6 to 8 show essential elements of a connection device according to the invention which is improved compared to the connection device according to FIGS. 3 to 5.

OftenPl

, Λ, W ^' IPO especially corrugated washers, toothed rings, spring washers and the like. Like. Can be put on the shafts of bolts without interference. This object is achieved with the invention specified in the marking part of claim 1.

benefits

Experiments with the device according to the invention have shown that not only normal, smooth washers, but also corrugated washers, toothed washers, spring washers and the like. Like. Trouble-free can be plugged onto the ^' shafts of bolts even at a relatively high speed. The difficulties encountered in the known device practically no longer occur.

Since the guide groove of the connecting device always has a cross section which is to a certain extent larger than the cross section of the disks or the like used in each case, ^" in the case of smaller disks or the like in particular, the proposed solution is sufficient in accordance with the characterizing part of the claim 1 to achieve the desired success completely, however, in the case of using larger disks or the like, it is expedient according to the proposal according to claim 2 that a dome-shaped recess is provided in the cover body of the connecting device, which is opposite to the conveying direction of the disks This solution enables the desired tilting of a washer to be attached to a bolt shank, even in the case of larger and in particular also stronger disks, and the greatest depth of which lies approximately opposite the tilting edge formed by the basic body

Of. '. P

A, WiP Fig. 1 shows a device 1 for placing discs on the shafts of bolts. The device 1 consists essentially of a storage container 2 for disks 3, a conveyor disk 4, a nozzle 5, a conveyor channel 6, a connecting device 7 and a conveyor disk 8. The conveyor disk 4 is in the region of the bottom of the storage container 2 on an axis of rotation 9 be ¬ strengthened, which in turn is rotatably mounted in a schematically illustrated bearing 11 fastened in a housing 10. The storage container 2 is also attached to the housing 10 in such a way that the bottom of the storage container 2 is inclined with respect to the vertical. The conveyor disk 4 has evenly distributed over its circumference and recesses 12 which are open towards the circumference and which are only slightly larger than the disks to be separated. In the area of recesses 12 scrapers 13 are provided, which extend to just above the recesses 12 and are mounted pivotably on the preferably compliant Vor¬ bins ^"2.

There is an opening 14 in the storage container 2 which is so large that it enables a disk to pass through. The opening 14 is followed by the conveying channel 6, which leads from the opening 14 to the connecting device 7. The delivery channel 6 can consist of a curved tube, the clear cross section of which corresponds at least in the region of the connecting device 7 to the cross section of a disk 3. The connecting device 7 is fastened on the housing 10 in such a way that the disk held in a defined position by the connecting device 7 in the region of the ends of the shafts of bolts 16 moved past the removal point denoted by 15 by the conveyor disk 8 relative to the axes thereof Inclination of z. B. take 30 °. Above the tapping point 15 on the tapping point 15 opposite A hold-down device 1 is provided on the overlying side of the conveyor disk 8 in order to prevent bolts 16 from escaping during the removal of disks 3 from the connecting device 7.

The conveyor disc 8 is fastened on an axis of rotation 18 which is mounted in a bearing 19 fastened in the housing 10. The axis of rotation 18 is connected to a motor 24 via bevel gears 20 and 21 and a shaft 23 mounted in the housing 10 in a bearing 22. The bevel gear 25 fastened on the axis of rotation 9 stands via bevel gears 26 and 27 which are mounted on a housing 10 in Bearings 28 and 29 mounted shaft 30 are attached, in drive connection with the bevel gear 20. This ensures that the conveyor disks 4 and 8 are driven synchronously. - A slip clutch 31 is located between the motor 24 and the bevel gear 21 or the shaft 23 to prevent overloading.

In the conveying path of the bolt 16, in the vicinity of the circumference of the conveyor disc 8, there is a nozzle (not specified) which can be connected to compressed air and whose outlet opening is aligned with the lower region of the bolt located above it and carried by the conveyor disc 8, in the same place of the circumference of the conveyor disc is on the side of the conveyor disc 8 opposite this nozzle, the inlet opening of a tube 3 whose outlet opening opens into a collecting container 34.

3 to 5 on a larger scale and with further details. The connecting device 7 essentially consists of a base body 35 with a guide groove 36 for the disks 3, a flap 37 and a support lever 38. The width and height of the guide groove 36 correspond approximately to the dimensions of a disk be 3. The connecting device 7 is connected via an extension 39 to the relevant end of the conveying channel 6. The guide groove 36 is partially closed by a plate 40. On the plate 40 there is an extension 41 in which a bore 42 det _befin¬, the groove by the plate 40 through to the Führungs¬ 36 performs. Following the plate 40, the guide groove 36 is covered by the flap 37. The flap 37 is pivotally mounted about a bolt 43 which is fastened in bearings 44, 45. A spring 46 is fastened to the base body 35, the free end of which loads the flap 37 in such a way that the flap 37 covers the guide groove 36. The flap 37 has tooth-like extensions 47, 48 in the region of the front end of the guide groove running curved in the base body 35, which extend into the range of movement of the disks 3 and on the side facing the guide groove 36, as seen in the direction of movement of the disks Guide groove 36 have inclined surfaces. In the area of the extensions 47, 48, open recesses 49 and 50 are provided in the flap 37 and in the base body 37 in the direction of removal of the disks 3, the width of which is slightly larger than the diameter of the shafts of the relevant bolts 16. The recess 50 becomes filled by the support lever 38, the free end of which ends with the plane of the guide groove 36 opposite the flap 37. The support lever 38 is pivotally mounted on a bolt 51 mounted on the base body 35 and is under the influence of a spring 52. With the aid of a stop screw 53, the position of the support lever 38 relative to the guide groove 36 can be adjusted. The bolt 51 is fastened in extensions 54, 55 of the base body 35. - The flap 37 and the plate 40 are in Fig .. 3 for reasons of better recognition- Availability of the details of the basic body 35 located therein is shown in dashed lines.

The operation of the device according to FIGS. 1 to 5 is as follows:

Via a feed chute 71, the bolts are guided with the shafts hanging downward in front of the feed wheel 8. With the aid of the recesses located on the circumference of the conveyor wheel s8, the bolts are successively removed from the feed chute and conveyed along a conveying path which roughly forms a semicircle to a discharge chute 73 provided with a scraper 72. Following the drain chute 73, the bolts then provided with disks, for. B. a thread rolling device in the region of the conveying path of the bolts, a ring piece 74 is provided in the plane of the conveyor disc 8, so that the heads of the bolts are partly supported on the conveyor disc 8 and partly on the ring piece 74 during the conveyance. Between the end of the feed chute 71 and the connecting device 7, an electrical contact which can be actuated by the shafts of the bolts and which controls a magnetic valve (not shown) provided in the path of the compressed air for the nozzle 5 is provided below the conveyor disc 8, so that it always appears when it appears a Bozen in the area of the connecting device, a compressed air pulse is emitted from the nozzle 5.

The disks located in the storage container 2 are separated with the aid of the conveyor disk 4, for example rotating in the specified sense _, and aligned in a predetermined position in such a way that, due to a predetermined inclination of the storage container, only in a corresponding partial area of the Storage container

_U_ Lend-supply of discs 3 with the help of the recesses 12, one disc 3 is removed in succession. In the event that more than one disk is guided through a recess, the wipers 13 are provided. The wipers 13 extend so far to the level of the conveyor disk 4 that wipers are wiped off which lie on disks already lying in the recesses.

With the aid of the aforementioned electrical contact, a compressed air pulse is emitted via the nozzle 5 when one of the recesses 12 is located in front of the opening 14 provided in the wall of the storage container 2. As a result of the synchronous drive of the conveyor disks 4 and 8 and the predetermined division of these conveyor disks with respect to the recesses, the frequency of the succession of the recesses 12 with respect to the opening 14 corresponds exactly to the frequency of the bolts appearing at the removal point. Thus, each disc 3 conveyed in front of the opening 14 with the aid of the recesses 12 in the conveyor disc 4 is blown to the removal point with the aid of compressed air and removed there through the shaft of the relevant bolt. At the removal point, the plane of the disk is inclined to the axis of the bolt for the purpose of removal in a manner known per se. The hold-down device 17 is provided to prevent a bolt from evading during the removal of a disk.

The conveying channel 6 is connected at the end opposite the opening 14 of the storage container 2 to the attachment 39 of the connecting device 7. The discs 3 blown through the conveying channel 6 move along the guide groove 36 of the connecting device 7 up to the tooth-like extensions 47, 4.8 of the flap 37. The side of the disc 3 facing the disc 3 is shaped accordingly The flap 37 and, if necessary, the support lever 38 can be achieved that the disks are also held in a defined position when the speed is completely reduced to zero.

When normal washers are fitted onto the shafts of bolts, the support lever 38 of the connecting device 7 is not required per se here. The use of the support lever 38 is advantageous when, for. B seen over the circumference uneven discs such. B. spring washers on which bolt shafts are to be attached. Then the support lever ensures complete support of the disk, in particular also in the front area when viewed in the removal direction, and thus serves to maintain a position favorable for the removal of the disk by the bolt. When a disc is removed, the support lever is pivoted away from the region of the disc by the free end of the shaft of the bolt. The removal of the disks is made possible by the inclined surfaces 76 located on the tooth-like extensions 47, 48 facing the guide groove 36, the flap 37 being slightly raised from the guide groove 3-6. The length of the recess 49 in the flap 37 or the recess 50 in the base body 37 (which is filled by the support lever 38) is essentially determined by the angle at which the bolts 16 hit the disks 3.

Via the extension 41 with the bore 42, the guide groove 36 can be supplied with compressed air constantly and to a lesser extent than when the disks are conveyed through the channel 6. In this way it can be achieved that the disks shortly after removal by the bolts under the action of an appropriate air flow up to the heads of the

_C Bolts are conveyed so that a special, longer inclined surface provided in other known devices is not necessary per se for further, complete attachment of the washers.

When the bolts are further conveyed with the disks removed, the disks then slide on a guide channel, which is known per se and which is not shown in detail here, up to the discharge chute 73.

6 to 8 show essential features of a connecting device modified according to the invention for connecting bolts and washers, and FIGS. 6 to 8 show the push-on process in three successive stages.

From a connecting device 77 according to the invention, which can otherwise correspond to the connecting device according to FIGS. 3 to 5, FIGS. 6 to 8 show a base body 78 with a support lever 79 and a cover body 80 with a tooth-like extension 81. The base body 78 corresponds 3 to 5, the support lever 79 corresponds to the support lever 38 of the connection device 7, the cover body 80 corresponds to the flap 37 of the connection device 7 and the tooth-like extension 81 corresponds to the tooth-like extensions 47, 48 of the connecting device 7.

In contrast to the flap 73 of the connecting device 7, the cover body 80 of the connecting device 77 is opposite. the basic body 78 is immovably mounted on the connecting device 77. Furthermore, the part of the base body 78 which surrounds a guide groove 86 for the disks 3 ends in contrast to the base body 35 of the connecting device 7, seen in the transplant direction of the disks 3, already approximately at a distance of half a diameter of the disks 3 in front of one of the. Inclined surface 76 of the flap 37 of the connecting device 7 corresponds to the inclined surface 82 of the tooth-like extension 81 of the cover body 80. This forms a tilting edge 84 for the disks 3.

At the oblique edge 82 of the tooth-like extension 81 of the cover body 80, a dome-shaped recess 83 connects against the conveying direction of the disks 3. The dome-shaped recess. is matched to the diameter of the disks 3 in question. The greatest depth of the dome-shaped recess 83 lies approximately opposite the tilting edge 84 formed by the base body 78.

In the cover body 80 there is also a recess 85 which allows the passage of shafts of bolts 16 and which corresponds to the recess 49 of the flap 37 of the connecting device 7.

Like the support lever 38 of the connecting device 7, the support lever 79 is resiliently pivotably mounted on the base body 78 or the connecting device 77 and is mounted on an axis that is located above the conveying plane of the disks 3. This ensures that the support lever 79 moves faster out of the range of movement of the disk 3 to be removed during the removal process.

The mode of operation of a device improved as shown in FIGS. 6 to 8 is as follows:

Bolts 16 conveyed by the conveyor disk 8 are driven by their shafts through the fixed cover body 80 recess 85 located on the in the conveying direction. to the front edge of the hole in the disk or the like 3. The relevant bolt is then the disk 3 - ^' supported by the tilting edge 84 of the base body 78 and the dome-shaped recess 83 in the cover body 80 - according to the representations in FIGS. 6 to 8 and thereby remove the disk 3 from the connecting device 77 . During this removal process, the support lever 79 dodges accordingly as the removal progresses. The removed disk 3 is then conveyed by the bolt 16 onto the guide channel mentioned further above, which causes the disk 3 to be pushed further or pushed onto the shaft of the bolt 16 in the course of the further rotational movement of the conveyor disk 8.

The structural relationships in a connecting device according to the invention are ideally shown in FIGS. 6 to 8. Of course, the cross section of the guide groove 86 for the disks 3 is at least slightly larger than the cross section of the disks 3 in question, so that disks 3 can be conveyed as smoothly as possible in the guide groove 86. In the case of smaller and in particular normal, smooth panes, the dome-shaped recess 83 can be partially or completely dispensed with, without the advantages achievable with the connecting device according to the invention being adversely affected thereby.

Within the scope of the inventive concept, a solution is also conceivable in which a movably mounted support lever is dispensed with and in which the tilting edge formed by the base body, viewed in the conveying direction of the disks, lies behind the point shown in FIGS. 6 to 8.

Claims

Patent / protection claims

1. Device for attaching discs and. Like. On the shafts of bolts and. The like., a) with a transport device for transporting bolts aligned in a predetermined position along a predetermined path, b) with a connecting device for bolts extending into the path of the bolts and. Discs, which forms the end of a transport channel provided for transporting discs and essentially consists of an immovable base body with a support lever which rests resiliently resiliently transversely to this plane and closes approximately with the plane of the base body and a support lever opposite the base body with a support lever Cover body with a recess allowing the passage of a bolt shank and with a guide groove for disks which is enclosed by the base body and cover body and which, for example in the region of the free end of the support lever, extends into the guide groove with a tooth-like extension facing one of the guide groove. this consists of an inclined surface and c) with a guide channel adjoining the guide groove of the connecting device for bolts provided with washers, characterized by the following features: d) the cover body (80) is opposite the base body (78) immovably mounted on the connecting device (77), e) the part of the base body (78) which surrounds the guide groove (86) ends, viewed in the transport direction of the disks (3), approximately at a distance of half a diameter of the disks (3) in front of the inclined surface (82) of the tooth-like extension (81) of the cover body ( 80) or in front of the free end of the ^' support lever (79) for the purpose of forming a tilting edge (84) for the disks (3).

2. Device according to claim 1, characterized in that a dome-shaped recess (83) is provided in the cover body (80), which against the conveying direction of the discs (3) on the inclined surface (82) of the tooth-like extension (81) of the cover body (80 ) and their greatest depth is approximately opposite the tilting edge (84) formed by the base body (78).

3. Apparatus according to claim 1 or 1 and 2, characterized gekenn¬ characterized in that the support lever (79) about an axis swivel bar on the base body (78) which is above the Fδr- plane of the disks (3).