DE2443201A1 - DEVICE FOR THE MANUFACTURING OF FASTENING ELEMENTS - Google Patents

Description

DlpL-lnci. Heinz Bardehle

iMö ^ a'Herrnstr. 15, TcI. 29 2555 Postal address Munich 26, PO Box 4

Munich, the lO. September 1974 ik

My reference: P 1651 Applicant: USM Corporation

Flemington, New Jersey

Delivery address: 140 Federal Street

Boston

Massachusetts USA

Device for the manufacture of fasteners

The invention relates to an apparatus for manufacturing of self-locking, internally threaded elements and in particular an apparatus for the continuous manufacture of elements such as fasteners, in which the self-locking feature is through a deformable plastic layer which is threaded on the inner provided surface of the element is attached, is achieved.

50981 1/0879

There is already a method and apparatus for making a self-locking, threaded one Element has been proposed in which the difficulties of plastic deposition on the end faces of the threaded element can be avoided and the deposition of plastic on the threaded surface in the selected area to a minimum Causes splashing on other parts of the threaded surface »With this method and apparatus a nut or other internally threaded part is heated and in a position in which its Axis runs from top to bottom, sprayed with finely divided plastic particles, which on the heated surface be caught and built up to form a plastic body. While the device to carry out of the process is already quite satisfactory »it has been found that in the case of mass production of such internally threaded elements, as is desirable for an economical application of the method, Improvements to the device are to be sought.

For example, automatic means can be provided for the to move internally threaded elements continuously through the various stations in which the Elements are loaded, the layer is applied to the elements, and the elements are loaded at a significant rate be discharged. It has been found that minor amounts of plastic material that left on various parts of the device, quite detrimental to the disposal of the material deposited on the end face or end guide threads of the element »To ensure that the self-locking property is achieved, it must Element in addition, while it is through the device in

509811/0379

is moved continuously, so precisely arranged, that the layer is picked up at a special point on the inner threads »

The object of the present invention is therefore to provide an improved device for the production of self-locking, to create internally threaded elements in which one made of elastic, thermoplastic material existing securing body or layer is applied to the element at a precise location in powder form « In addition, the device is intended for the continuous production of self-locking, internally threaded Elements be simple to operate and relatively inexpensive to manufacture and operate. In the end the device should be automatic, require little maintenance, be reliable and therefore easy to transfer to a manufacturing plant be adaptable, in which a plurality of such devices can be operated by a single man "

This is achieved according to the invention by creating a device for applying securing layers of elastic, thermoplastic on internally threaded items with openings at both ends of the threaded provided part, which generally comprises a support device for receiving the internally threaded objects and means for moving the support device along a predetermined path. which the object is picked up at the first place on the support facility «, It is with the sub- Support device connected lines provided which have an outflow opening which against the part the thread turns of the object stored on the support device is directed towards which the layer is directed should be applied. The lines have an inlet opening

50981 1/0879

at the opposite end for receiving a thermoplastic in powder form, which is on the threads of the object is deposited. A drain port is provided to hold thermoplastic material underneath Create pressure when it is in alignment with the inlet port »In addition, there is a vacuum device intended for application of a negative pressure when it is in alignment with the inlet opening »Die Means for moving the assist device along a predetermined path cause the assist device to move to the point at which an object is picked up by the support facility, and then to a point where the line opening "" brought into alignment with the drain opening, and then to a point where the inlet port is brought into alignment with the vacuum device.

In the case of a continuous operating cycle, the lines therefore cause the thermoplastic to be applied on the special part of the inner threads of an object. Then the lines are in front of the next operation cleaned of thermoplastic plastic.

In the following a preferred embodiment of the invention is described in connection with the figures.

It shows:

Fig. 1 is a perspective view of a device for the production of self-locking, with Threaded fasteners according to the invention,

FIG. 2 is a plan view of the device according to FIG. 1,

509 811/0879

with parts of the structure broken away to reveal underlying features,

Fig »3 shows a cross section along the line III-III of Fig "2 with details of the structure,

Fig. 4 shows a cross section along the line IV-IV of Fig. 2 with further details of the structure,

Fig. 5 is a longitudinal section along the line V-V of Fig. 4, which shows this part of the structure in detail.

FIG. 6 is a plan view of part of that shown in FIG Assembly in an enlarged scale for the sake of clarity,

FIG. 7 is a side view of the structure shown in FIG. 6,

FIG. 8 is a plan view of another part of the FIG Fig. 2 is an enlarged scale and for the sake of clarity

FIG. 9 is a side view of the structure shown in FIG. ·

In the figures, in particular in FIGS. 1 and 2, one is Device for making a "self-locking, with Internally threaded object shown in the form of a hexagon nut N, which is generally a rotatably mounted Has transport member in the form of a table lo, which along a predetermined revolving path around its central axis is movable in the direction shown by the arrows in Figs.

When the table is continuously around a fixed bearing body

509811/0879

11 is rotated, a point on the table 10 will pass a number of stationary work areas, which for the purposes of this description will be referred to as operational stages »

During the first stage of operation, a loading chute 12 causes it to slide down against the surface of the table 10 is inclined to a deposit of the hexagon nut N on the Table. During a next stage, an elastic, thermoplastic material in powder form is applied to the internally threaded ones provided surface of the nut applied this stage is essentially enclosed by a vacuum exhaust 13, the operation of which will be explained in detail below.

During a next subsequent stage, an second upwardly inclined chute 14, one end of which is adjacent to the table 10, the unloading of the article N from the table lO. A next operating stage follows, which essentially covers the part of the table 10 that is between the unloading station and the loading station is arranged and in which the means for applying the thermoplastic material on the mother N cleaned of leftover material and made available for the next operational sequence.

From Pig «1 it emerges that the stationary bearing body 11 is provided with a funnel-shaped filler neck 15 which serves to receive the powdery, elastic, thermoplastic material to act on the inner threads of the nuts N. This operation will be explained in detail below.

Referring to FIGS. 2 through 5, and in particular to FIG

5038 1 1/0879

the table 10, the table shown has a hub 16 with a plate 17 attached to its uppermost surface / and with a groove 18 for receiving a V-belt 19 which is connected to a motor (not shown) '. The hub 16 is slidable with the central one Bearing body 11 engages and is set in rotation by the motor-driven V-belt 19 »with the hub through a Pair of axle bearings 20 and 21 is supported.

With further reference to these Figures 2 to 5, the hub 16 has a number of circular channels 22 formed therein, each opening inwardly towards the bearing body 11 and receiving a tube 23 at the opposite end, the tube and the channel in combination form a line, as will be explained in detail below, _o

As best shown in Fig. 2, the outer periphery of the plate 17 is provided with a number of V-shaped slots 24, each of which has a tongue 2 5 »which is arranged below the corresponding slot and which follows extends outwardly from the corresponding slot to provide a pocket or recess for receiving a threaded one To form hex nut N of the type shown »Each of the tubes 23 has one welded to it or other means connected arm supports 26- A number of fasteners 27 serve to connect the Carrier 26 with the plate 27, wherein the corresponding tongue 25 is pushed therebetween «Each of the tongues 25 has one circular opening formed therein. The outer end of the tube 23 is bent upwards by about 45 µm through the circular opening in the tongue and something to extend over the tongue into a position which would place the outer end of the tube in a hex nut,

50 98 11/0879

2A43201

which is received in the pocket formed by the corresponding V-shaped slot 24 "

Referring particularly to FIGS _o 3, 4 and 5 11, the bearing body has a central bore 28 into which the filler pipe 15 is inserted and which extended to a point in the vicinity of the bottom of the bearing body, the bore 2 8 is near its center flanged outwards and has a slotted opening 29 _f which extends by approximately 180 around the bearing body 1.1 and leads from the flanged part of the bore 28 to the outside in the bearing body 11 and is aligned with the number of channels / when the table is on the bearing body 11 is arranged. A conically shaped manifold 30 is disposed in the flanged portion of the bore 28 and is connected to the viand of the bore on the portion of the wall that is not broken away by the slotted opening 29. The distributor 30 therefore separates the upper part of the bore 28 from the lower part over the entire circumference of the bore with the exception of the part in which the slotted opening 29 is arranged »

An inlet port 31 extends into the bore 28 its lowest end and is connected to a fluid pressure source, e.g., an air pump (not shown) »connected.

Diametrically opposite the slotted opening 2 9 and close of the outer edge of the bearing body 11 are a number of arranged perpendicular circular cavities 32 »four in number, which are best shown in FIG.

The lower end of each cavity 32 terminates in a Chamber 33 of larger diameter and the upper end terminating in a second slotted opening 34 similar to that diametrically

50981 1/0879

opposite slotted opening 29- In the present The slotted opening 34 extends from the outer case Periphery of the hub 11 over a circumference of about 150, to an inner wall 35, as shown in FIG. The protected Opening 34 is aligned with channels 22 and therefore forms a flow path from tubes 23 to the chamber 33, with which a vacuum source (not shown) is in communication when the tubes 23 are moved into the area over which the opening 34 is formed.

With reference in particular to FIGS. 3 and 4, from the structure can be determined that the table 10 from the hub 11 due to the removable retaining plate 36, which ' is fastened with four fasteners in the form of screws 37, is easily removable. When the screws 37 are removed, the holding plate 36 can be lifted from the structure and the table 10 removed and then through replacing a table designed to accommodate internally threaded fasteners with a different Size and shape compared to those that are adapted to the table 10 shown serves.

Due to the need to provide a sliding fit between the table 10 and the central bearing body 11, is Given a distinct possibility that material which between the tubes 23 and the slotted opening 29 or between the tubes and the slotted opening 34, between the outer surface of the bearing body 11 and the inner surface of the hub 16 of the table 10 tried to escape. In the bearing body 11, a pair of circumferential grooves 38 and 39 is therefore formed, which extend completely around the bearing body. At At a point adjacent to the inner wall 35 of the slot 34, a vertical bore 40 extends upward

509811/08 7 9

through the bearing body 11 and a pair of passages 41 and 42 are provided which end at the grooves 38 and 39. A channel 43 extends from bore 40 and is connected to a source of air pressure (not shown) to create one Air pressure in the bore 40 connected. Thus, material that is between the hub 16 and the bearing body 11 trying to escape is prevented because any air flow that occurs from the grooves 38 and 39 into the openings 29 and 34 takes place *

Referring to Figures 1 and 2, it can be seen that the vacuum hood 13 is divided into two parts for convenience only, and both parts taken together cover the area around the bearing body 11 in which the slotted opening 29 is formed. That is, the entire range over which the thermoplastic material in powder form through the L <ray tube ¹ is conveyed 23 is covered in the circumferential direction of the withdrawal. 13 Both parts of the trigger 13 are constructed essentially the same. Therefore, only the first part "as shown in FIG. 1" will be described in detail.

each of the trigger parts is provided with a chamber 44 which is applied with a negative pressure by a vacuum generating device (not shown). A cover plate 45 extends outwardly from the trigger 13 to a position above the table 10, which serves to place one on the table arranged nut N to cover. In order to produce a uniform vacuum over the trigger 13, there are a number of transverse walls 46 within each part of the vent 13 which serve to form a number of separate vacuum areas, each substantially the has the same negative pressure that on the area above the nut N, which is adjacent to the opening of the trigger /

50981 1/0879

- ¹¹ - 24 A 3

is arranged to be applied «,

ι The feed arrangement shown has the chute 12, which stored adjacent to the circumference of the table lO and with its lowermost unloading side at a small distance above the ' Surface of the plate 17 is arranged »The slide has an outer rail 47 which extends over an inner rail

48 extends beyond, as best shown in Figures 6 and 7, _e ", the distance between the outer rail 47 and inner rail 48 is substantially equal to the width between the edges of the hexagonal portion of the table to be conveyed lO nut N. As shown in Figures 6 and 7, the nuts wrench face to wrench face as they slide down the chute 12 and are therefore oriented to engage the V-shaped slot 24 on the table 10. One section

49 of the slide 12 is made of a material with suitable Induction-free and heat-resisting properties are made and extends through an induction coil 50 which is appropriately inclined and around the chute section is arranged around a sliding through the section To heat nut N »The nut N can be conveyed by any suitable commercially available feeder, e.g.

—En

a shaking feeder or another feeder “Since such Devices are well known in the art they are considered unimportant in describing the present invention and have therefore not been shown.

On the opposite side of the slide 12 from A similarly constructed slide 14 is arranged at table lo / as best shown in FIGS. 8 and 9 in connection with FIG. 1 · The chute 14 causes the removal of the Nuts N from the table lO. She is in a similar way to the slide 12 inclined, with its lowermost end, which

509811/0879

in the present case the nut-receiving end is arranged adjacent to the top of the table 10. The chute 14 has an outer rail 51 which extends beyond an inner rail 52, both of which Rails are substantially spaced across the hexagonal portion of a nut N from one another. The uppermost end of the chute 14 can be left open so that the nuts N can be placed in a collecting container (not shown) May be dropped, or may lead to another chute or conveyor to get the nuts to carry a subsequent work or memory area.

With reference to the particular configuration of the chutes 12 and 14, the outer rail 47 of the chute 12, as shown in FIG. 6, provides a means for guiding the nut N into position in the V-shaped slot 24 of the table 10 _{f, thereafter} the mother can be held in place on the table for the remainder of its path by gravity. However, a number of spring clips 6o can also be used to create a radial holding force for the nuts, if necessary. Similarly, when the nuts N are removed, the outer rail 51 of the chute 14 serves to hold the nut in alignment with the slot 24 until the nut is raised above the table, and the inner rail 52 serves in conjunction with the Rail 51 for guiding the mother along the slide to its destination.

In operation, the device described here is initially prepared by charging the filler neck 15 with a thermoplastic in powder form. The material can consist of a powder, which is a mixture with a larger proportion of powdered polyamide plastic (Nylon 11) and a lower proportion of epoxy resin »

50981 1/0879

the particle size distribution being such that less than 2% is retained in a No. 70 sieve, approximately 90% is retained in a No. ₀ 140 sieve and approximately 5% passes through a No. <»32 5 sieve»

While the means for introducing thermoplastic resin in powder form to the device has been shown as funnel-shaped filler neck 15, for purposes of the invention the material may of course also be obtained from a remote source and continuously through a suitable one. Be 11.gefördert line to the bearing body "In addition, the influx of plastic material through a valving or other in the prior art is well meted known means so as to control the feed rate according to the production speed, the parent size, thread size or the temperature changes.

When the material is introduced into the device, be the means for creating a vacuum in the chamber 33 and the channel 43 and the means for creating an air pressure actuated in the inlet port 31. Outside of the bearing body 11, the means for generating a Vacuum in the trigger 13 started. The induction coil 50 is energized to turn the nuts N on heat their way along slide 12 »

When the preparatory steps outlined above have been followed have been, the device is in a ready-to-manufacture state. "Then the motor for driving the V-belt 19 and the feed means for the nuts Actuated N on chute 12 / to initiate processing of a typical set of internally threaded fasteners. When the table 10 is about

50981 1/0879

- ¹⁴ - 2A43201

with ten rotations per minute in the direction of the Fig.

1 and 2 shown arrows rotates / the nuts N. are inserted into the chute 12 and slide the wrench flat on wrench flat through the induction coil 50, in which each nut is brought to a high enough temperature to apply the thermoplastic powder described above the threaded surface of the nut firmly to the touch and through the one coming off the surface Allowing heat to melt to form a continuous plastic body. When a mother N joins the table lO approaches, it is held on the chute 12 by the outer rail 47 until it is in alignment with is a V-shaped slot 24 and is thereby positioned over a corresponding tube, which with his Drain hole in the threaded opening of the Mother is arranged. The table 10 rotates with one constant speed (about 10 revolutions per Minute) and each nut N remains on the table for about half a turn, or about 3 seconds, whereby the discharge opening of the hollow tube 2 3 protrudes slightly into the threaded opening of the nut

When the table 10 rotates, each tube 23 becomes like this moves so that its corresponding channel 22 comes into alignment with the slotted opening 29 and that adjacent on the pipe drainage opening arranged nut is located at the same time below the cover plate 45 of the trigger 13. Through the inlet opening 31, air is in the lower part the hollow bore 28, where it enters the slotted opening 29 · The air flows through horizontally a converging area to the slotted opening 29 via the powder slot through the wall of the bore

2 8 and the conically shaped manifold 30 is formed where it receives the powder, and then flows through a

5098 11/0879

diverging area. The powder is conveyed to the powder slot at a uniform speed and the converging-diverging areas created by the air flowing from the one adjacent to the manifold 30 Part of the bore 28 flows into the slotted opening 29 »' create a slight suction effect or "Venturi effect" at the powder slot, which draws the powder into the air stream. The slotted opening 29 and its powder slot between the distributor 30 and the bore 28 extend approximately 180 around the bearing body 11. There is therefore a continuous deposition of the powder on the heated one over this arc length of the web Mother N instead of

In the embodiment shown, the table is 10 provided with approximately sixty tubes 23, each tube protrudes slightly into the nut N at an angle of about 45 °. The powder is therefore made by the Tube 23 guided so that it is on the .inneren threads of the fastener at a point slightly above of the lowest thread and the air powder flow is set so that only a little powder hits the top thread. While the pipe 23 and the nut N connected to it rotate together around the 180 -section, becomes a continuous, quite equal- ■ moderate stream of powder thrown into the mother «Simultaneously the vacuum hood 13 pulls excess material into the Deduction and away from nut N during the 180 section. The flow of "vacuum air" through the inner opening in the Mother and over the head side of the mother prevents * that Powder sticks to the nut, except where the powder goes directly from the tube 23 onto the nut threads on meets ft.. ■. ".. ·.

50981 1/0879

When the tube 23 and the nut N connected to it Exceed operating stage in which the channel 22 is in alignment with the slotted opening 29 (and consequently protrude under the trigger 13), a small arc of about 15 ° is provided in which the channel 22 faces the outer circumference of the bearing body 11 » The tube 23 is therefore closed. At about this point in the table movement the nut confronts the leading edge of the chute 14 and, while it is still with the V-shaped When slot 24 is engaged, it is aligned with the rail 51 of the chute »The nuts N are then in a wrench-face-to-wrench-face engagement continuous movement of the table lo forced and be in a continuous stream between the inner Rail 52 and the outer rail 51 of the slide 14 moved to be removed from the table 10 to a pick-up point.

During the next 150 or so arc of the orbit of rotation a next stage of operation takes place in which each of the tubes 23 with its channel 22 in alignment with the slotted opening 34 is brought, which is connected to the chamber 33, to which a vacuum is connected will. A vacuum is applied to each of the tubes 23 over an arc distance of 150, each of which is excess Removed material from tube 23 and channel 22

As you can foresee, you can create a pipe 23, which is bent upwards at an angle of 45 / around the powdery material in the manner described and Way to distribute the inner threads of the nut N, particles of material on the outermost surface of the pipe opening impinge and would therefore be deposited on a subsequent nut if this nut is heated up brought up the table and over the drain hole of the pipe.

50981 1/0879

is moved. By creating the vacuum chamber 33 and suction of the material inwardly away from the opening of the tube 23, the material becomes essentially at the opening removed and the likelihood of material in an undesirable location on a subsequent fastener is deposited, is thereby essentially eliminated »

Since the basic procedure outlined here requires the plastic particles to be forced upwards, the present construction in a unique way solves those problems with the mass production of internally threaded provided fasteners are connected v / whether such a process is used «, An important feature, the plastic particles face up against the threaded ones To force provided surface, consists in the fact that those particles which are not caught on hot surfaces are carried upwards by the gas flow and either get caught by hot surfaces of higher threads, or discharged through the top opening portion of the nut, or other threaded fasteners »If such plastic particles directed downward by the nut, plastic could only be on the top surfaces of the threads be collected as gravity would not be available to put plastic on the threaded surfaces opposite to the surfaces directly in line to be carried with the entering plastic particles »Through Use of a system in which the air-entrained powder must be forced up onto the threads of the fastener for processing To achieve which is improved over known machining, the present invention has numerous Advantages =

509811/0879

By keeping the pipes in a clean condition and the nut N exactly on the table 10 due to the V-shaped Slots 24 is / remain the first and final threads of the nut in a clean condition so as to allow the application of the nut to an externally threaded one provided fastening element to facilitate. Providence of placement and cleaning elements results in a minimum of powder deposition on the threads outside of the area in which the layer is desired and also eliminates any powder build-up the outer nut surfaces.

The simple machine can be manufactured at minimal cost and requires only a minimal amount of replacement parts for different mother sizes. If desired, a different mother with one layer to provide, this can be achieved in that only the holding plate 36. removed and the table lO from the Bearing body 11 is raised, after which a new table and Appropriate slides and a trigger can be used, which is adapted to a differently sized fastener are ο

In addition, the downtime of the machine is minimized due to the actual avoidance of any clogging Powder passages and jamming of the nuts on the conveyor routes.

In summary, it can be stated based on the description above that the application of the tube 23 first with powder and air pressure and then with vacuum different Purposes. First of all, it prevents any outward flow of plastic that can then pass through the The outer surface of the heated nut N could stick,

509811 / U879

while the mother is positioned on the table lO or by removed from the table. It also removes the vacuum any excess powder from the tubes 23 to a gradual Powder build-up and clogging of the pipes too Another advantage of the vacuum drawn through tube 23 is that it is a stream cooler Air through the outlet of the pipe on the right to a gradual increase in temperature and the possible consequent adhesion of the powder to the pipe impede"

Another advantageous feature of the present structure is that the arrangement and shape of the vacuum hood 13 relative to the nut N and the air speed as well affect the powder distribution on the nut and serve to control the supply of powder in the "venturi" area to support. '

Another important feature of the present structure is the manner in which the nuts N are fed the table lO and the subsequent removal of the nuts from the table. The nuts are oriented wrench flat to wrench flat and can be viewed as a chain, which meshes with the 120 slots 24 of the plate 27, which can be viewed as a sprocket. The rotation of the Table 10 at a uniform speed serves as a Speed controller for the system "As each nut N approaches the bottom of the chute 12, it will lowered over the opening of a tube 23 and comes too gradually into meshing engagement with the V-shaped. Slot 24 of plate 17. When the table rotates then moves the mother further forward. The nut will be tightly engaged with the 120 ° slot through the outer rail 47 of the slide 12 out, even at speeds of

50 9811/0879

about 600 fasteners per minute. The centrifugal force on the table was found to be slight where only gravity and spring clips 60 were necessary to keep nut N in place hold ο

The chute 14 serves to remove the train of nuts N from the table 10 by pulling the nuts upwards leads and engages the V-shaped slots 24 of the plate 17 and in linear alignment during their initial Upward movement through contact with the outer rail 51 stops »

It can therefore be said that the described Structure ^ serves to achieve the various objectives of the present invention through a union of elements, which cooperate to create a device for the continuous production of self-locking, internally threaded provided fasteners to create which a represents substantial improvement over 'known devices.

509811/0879

Claims (1)

Claims ^ Apparatus for applying securing layers of resilient thermoplastic to internally threaded objects with openings at both ends of the threaded part, with means for feeding the objects onto a support device, the feeding means including heating means for the objects, and with means for removing the Objects from the support device, characterized by a number of recesses (24) formed in the support device (10) for receiving the internally threaded objects (N) and supporting each object, the axis of the threaded part running from top to bottom ; by a number of tubular conduits (23) having an outflow opening located at least partially within the threaded portion of a corresponding internally threaded article # the conduits (23) being angled upward in the portion adjacent to the opening directing the flow through the conduit opening against a selected portion of a corresponding threaded article (N), and wherein the conduits (23) have an inlet opening (22) at the end opposite the discharge opening, through a mixing chamber (28,30 , 31) for receiving thermoplastic material and fluid pressure with a discharge opening (29) formed therein, through a vacuum chamber (33) with negative pressure and an opening (34) formed therein and through means (19) for moving the support device (10) along a predetermined Ueges, on dtm the inlet opening (2.2). each conduit (23) is successively moved into alignment with the discharge opening (2 9) of the mixing chamber and the opening (34) of the vacuum chamber, first thermoplastic 5 0 9 8 1 1 / Ü 8 7 9 Flow plastic through each conduit (23) and onto the threads of an internally threaded object (N) and then each line (23) to be cleaned of thermoplastic material. 2. Apparatus according to claim 1, characterized by vacuum extraction means (13), the objects (N) on the support device (10) in the alignment area of the tubular Lines (23) with the discharge opening (29) of the mixing chamber encase to remove excess thermoplastic material that is against the inner threads of the objects (N) is directed to remove. ο Device according to claim 1, characterized in that the support device from a circular rotatably mounted on a fixed bearing body (11) Table (10) consists, the discharge opening (29) of the mixing chamber and the opening (34) of the vacuum chamber at points in the bearing body which are offset from one another in the circumferential direction (11) are arranged so that the inlet port (22) of the Lines (23) are alternately brought into alignment with the openings (29, 34) in the bearing body (11) when the Support device turns. 4ο device according to claims 1 to 3, characterized in that that the support device (10) has a flat surface (25) with a number of evenly spaced has openings formed therein through which the tubular conduits (23) extend, the flat surface forms the bottom of each recess (24) on which the underside of the object (N) rests when it is received in the recess (24). 5. Apparatus according to claim 4, wherein the objects hexagonal 5098 11 / Ü879 nuts are characterized by a number of walls formed at right angles to the flat surface (25), each of which, together with another, forms the side wall of the recess (24), the pair of walls being two of the hexagonal sides of a nut captured »around them with the internally threaded part to a corresponding one To position the conduit outflow opening adjacent. 6ο Device according to claims 1 to 5, characterized in that » that the means for feeding the objects (N) into the recesses (24) comprise an inclined ramp (12), the lower end of which is adjacent to the flat surface (2 5) of the support facility (10) arranged and in the " is substantially aligned with the path of the support device (10) / and at a distance that is slightly greater than the largest transverse dimension of the one on the support device the hexagon nuts to be inserted is » having arranged side walls »whereby the nuts can slide down the ramp one after the other with one side in contact with one side of a preceding and following nut and with a pair of sides for Alignment with a recess (24) of the support device is arranged « 7, device according to claims 1 and 6, characterized in that » that the heating means (50) are arranged along the ramp (12) of the feed means, to the temperature of the threads of the article (N) to a temperature above the softening temperature the value of the thermoplastic material, in order to thereby ensure that the material on the threads when they come into contact with them. 8. Apparatus according to claim 1, characterized in that the means for removing the objects (N) from the 50981 1/0879 Support device (10) a fixed, inclined Have ramp (14), the lower end of which adjoins the support device »with the objects (N) on the Ramp (3.4) promoted and on it by rotating the support device (lQ) are moved. 509811/087 9