EP0024086A1 - Apparatus for producing a retaining device for nails to form a row of nails. - Google Patents

Apparatus for producing a retaining device for nails to form a row of nails.

Info

Publication number
EP0024086A1
EP0024086A1 EP80900466A EP80900466A EP0024086A1 EP 0024086 A1 EP0024086 A1 EP 0024086A1 EP 80900466 A EP80900466 A EP 80900466A EP 80900466 A EP80900466 A EP 80900466A EP 0024086 A1 EP0024086 A1 EP 0024086A1
Authority
EP
European Patent Office
Prior art keywords
nails
wheel
nail
forming
row
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80900466A
Other languages
German (de)
French (fr)
Other versions
EP0024086B1 (en
Inventor
Erik Berendtsen
Peder Pedersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordiske Kabel OG Traadfabriker AS
Original Assignee
Nordiske Kabel OG Traadfabriker AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nordiske Kabel OG Traadfabriker AS filed Critical Nordiske Kabel OG Traadfabriker AS
Publication of EP0024086A1 publication Critical patent/EP0024086A1/en
Application granted granted Critical
Publication of EP0024086B1 publication Critical patent/EP0024086B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B15/00—Attaching articles to cards, sheets, strings, webs, or other carriers
    • B65B15/04—Attaching a series of articles, e.g. small electrical components, to a continuous web

Definitions

  • a method of producing a retaining device for nails to form a row of nails and an apparatus for carrying out the method
  • the invention relates to a method of producing a retaining device for nails to form a row of nails for use in a hail gun, the nail heads preferably having an at least approximately conical underside, said retain- ing device consisting of at least one panel of poly ⁇ meric, preferably thermoplastic material abutting one side of the row of nails and having at least one row of projections which are narrow compared to the width of the panel and extend between the nails to secure them, the nails being disposed in grooves in the peripheral surface on a wheel rotating about a horizon ⁇ tal axis, the polymeric material being applied during the rotation of the wheel.
  • Such a retaining device is arranged so that the nails may be ejected from the retaining device without any risks of material being carried off from the retaining fevice itself, since any material torn off from said device would be pulled down into the nail hole and would cause great trouble there.
  • the object of the present invention is to provide a method permitting a very rapid and simple manufacture of a retaining device with a panel having projections which secure the nails so that they will be released from the panel as easily as possible.
  • said wheel is provided with at least one narrow groove in the peripheral surface of the wheel, said wheel extend ⁇ ing longitudinally of the row of nails and having approximately the same depth as or somewhat greater depth than the nail receiving the grooves.
  • the nails will thus form part of the mould in which the polymeric material is cast, and "the nails may be placed in the mould quite easily and in a manner kno ⁇ «'n in connection with other retaining devices.
  • the hot, 3.1quid, polymeric material flows do into said groove it will, depending upon the depth of the groove, enclose the nails more or less so as to secure them as effectively as desired, while still ensuring release of the nails from the projections by operation of the nail gun without any risks of undesired plastic portions being torn off.
  • the nail head may also be shaped differently, it being only necessary to adapt the edge of the panel facing the nail head so as to obtain a corresponding wedge effect.
  • the hot, liquid, polymeric material is supplied conti- nously during the rotation of the wheel.
  • the nails are then placed in a manner known per se in the grooves in the wheel periphery, said grooves extending either in parallel with the wheel axis or obliquely, the latter often being desirable in order for the nails to be placed as closely adjacent one another as possible.
  • the wheel is then rotated at a suitable speed of rotation so that the plastic material continuously solidifies when forming the panel and penetrating between the nails and down into said track.
  • the invention also relates to an apparatus for carrying out the method disclosed permitting a quite precise shape of the panel to be achieved so that it can, as is often desired, be used as a guide in the nail gun as well.
  • Such an apparatus comprises a wheel rotating about a horizontal axis and having grooves in its outer periphery for receiving each nail, and is characterized by at least one groove in the peripheral surface of the wheel extending longitudinally of the row of nail- receiving grooves having approximately the same depth as or a little greater depth than the nail receiving the grooves, and that movable forming means, e.g.
  • the forming means may be construct ⁇ ed in many different ways, depending upon dimensions and the polymeric material used, it being important that the solidified material does not adhere to the forming means, and that the temperature at which the materials concerned are sufficiently fluid, is so low as to avoid damage to the forming means, which, if they are bands, must be of a flexible material.
  • thermoplastic material Since such a continuous row of nails is often to be coiled up, it is usually necessary to employ a thermoplastic material. It has been found that certain types of poly ⁇ ethylene have a very low softening point and bring about so little friction in relation to the forming means and solidify so quickly that the entire method will be carried out extremely easily and quickly when using such a material. At the same time the friction in relation to the nails is comparatively insignificant without being so low as to endanger the required securing, but the nail is ejected from the retaining device without much loss of power.
  • a functionally particularly advantageous embodiment of such an apparatus is characterized in that said forming means comprise two movable bands abutting and following the surface of the wheel so as to define the two edges of the panel, and an additional band for forming the back of the panel, said additional band abutting the outer face of said first-mentioned two bands.
  • fig. 1 shows a part of an apparatus for carrying out the method of the invention
  • fig. 2 shows a section taken along the line II-II in fig. 1.
  • The_drawing shows a part of a wheel 1 whose outer peri ⁇ phery is provided with grooves 2 for receiving nails 3 supplied from a feeding channel 4.
  • the wheel 1 rotates
  • the retain ⁇ ing device for the nails is provided at the upwardly facing part of the wheel where plastic material, pre ⁇ ferably a thermoplastic polymer, is supplied through a nozzle 6.
  • plastic material pre ⁇ ferably a thermoplastic polymer
  • the plastic material will penetrate down between the nails and into the groove 7 that has such a depth as to form small projections which grip each nail and have a clearly weakened line at the side of the nail facing away from the panel 10.
  • a running band 9 is pro ⁇ vided that abuts on the top of the two bands 8, and which thereby defines completely the mold cavity in which the panel is to be formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)

Abstract

Dans la production de rangs ou files de clous en continu ou en discontinu utilises dans des pistolets a clous, les clous (3) sont places dans une rangee de rainures paralleles (2) a la peripherie d'une roue (1). Une rainure (7) s'etendant le long de la peripherie de la roue est approximativement aussi profonde ou un peu plus profonde que les rainures (2) et coupe les rainures (2) en leur centre. Des bandes (8) sont appliquees des deux cotes de la rainure (7) espacees par rapport a la rainure, et une troisieme bande (9) est appliquee sur les bandes (8) pour former une cavite definie par les bandes (8 et 9) et par la peripherie de la roue avec la rainure (7). Une resine liquide est introduite dans ladite cavite et se solidifie pour former un panneau (10) qui s'appuie contre la file de clous et possede des saillies s'etendant entre les clous et les tenant au moins partiellement sur leur pourtour.In the production of continuous or discontinuous rows or rows of nails used in nail guns, the nails (3) are placed in a row of grooves parallel (2) to the periphery of a wheel (1). A groove (7) extending along the periphery of the wheel is approximately as deep or a little deeper than the grooves (2) and cuts the grooves (2) in their center. Strips (8) are applied on both sides of the groove (7) spaced apart from the groove, and a third strip (9) is applied on the strips (8) to form a cavity defined by the strips (8 and 9 ) and by the periphery of the wheel with the groove (7). A liquid resin is introduced into said cavity and solidifies to form a panel (10) which bears against the line of nails and has protrusions extending between the nails and holding them at least partially around their periphery.

Description

A method of producing a retaining device for nails to form a row of nails, and an apparatus for carrying out the method
The invention relates to a method of producing a retaining device for nails to form a row of nails for use in a hail gun, the nail heads preferably having an at least approximately conical underside, said retain- ing device consisting of at least one panel of poly¬ meric, preferably thermoplastic material abutting one side of the row of nails and having at least one row of projections which are narrow compared to the width of the panel and extend between the nails to secure them, the nails being disposed in grooves in the peripheral surface on a wheel rotating about a horizon¬ tal axis, the polymeric material being applied during the rotation of the wheel. Such a retaining device is arranged so that the nails may be ejected from the retaining device without any risks of material being carried off from the retaining fevice itself, since any material torn off from said device would be pulled down into the nail hole and would cause great trouble there.
It is known to produce such rows of nails by coating the nails disposed in grooves in a wheel with a plastic material, e.g. as described in the U.S. Patents 3303632 and 3 985. However, these known methods do not provide for the formation of a panel on one side of the row of nails and thereby the desired safe guiding of the nail row through a nail gun, another point is that the row of nails produced in this manner involve a great risk of the plastic material being torn off when the nail is ejected. The object of the present invention is to provide a method permitting a very rapid and simple manufacture of a retaining device with a panel having projections which secure the nails so that they will be released from the panel as easily as possible. This is achieved according to the invention in that for the purpose of forming said narrow projections with a weakened line or similar indication for release of the nails, said wheel is provided with at least one narrow groove in the peripheral surface of the wheel, said wheel extend¬ ing longitudinally of the row of nails and having approximately the same depth as or somewhat greater depth than the nail receiving the grooves.
In such a method the nails will thus form part of the mould in which the polymeric material is cast, and"the nails may be placed in the mould quite easily and in a manner knoι«'n in connection with other retaining devices. When the hot, 3.1quid, polymeric material flows do into said groove it will, depending upon the depth of the groove, enclose the nails more or less so as to secure them as effectively as desired, while still ensuring release of the nails from the projections by operation of the nail gun without any risks of undesired plastic portions being torn off.
When the depth of the groove is the same as or a little greater than the nail receiving the grooves, a small opening or weakened line will be formed in the project¬ ions surrounding the nails, ensuring that the nail will be ejected from the retaining device itself when it is urged axially forwards by means of the impact mechanism fitted in a nail gun. The nail head, which should prefe¬ rably have a conical underside, then serves to urge the
O P panel aside and to break the weakened line, but the nail head may also be shaped differently, it being only necessary to adapt the edge of the panel facing the nail head so as to obtain a corresponding wedge effect.
The hot, liquid, polymeric material is supplied conti- nously during the rotation of the wheel. The nails are then placed in a manner known per se in the grooves in the wheel periphery, said grooves extending either in parallel with the wheel axis or obliquely, the latter often being desirable in order for the nails to be placed as closely adjacent one another as possible. The wheel is then rotated at a suitable speed of rotation so that the plastic material continuously solidifies when forming the panel and penetrating between the nails and down into said track.
Spreading of the plastic material for forming the panel may, in a way, be controlled by selection of outflow velocity, temperature and rate of feeding. However, the invention also relates to an apparatus for carrying out the method disclosed permitting a quite precise shape of the panel to be achieved so that it can, as is often desired, be used as a guide in the nail gun as well. Such an apparatus comprises a wheel rotating about a horizontal axis and having grooves in its outer periphery for receiving each nail, and is characterized by at least one groove in the peripheral surface of the wheel extending longitudinally of the row of nail- receiving grooves having approximately the same depth as or a little greater depth than the nail receiving the grooves, and that movable forming means, e.g. form¬ ing bands or forming .wheels, are provided for controll- ing the spreading of the hot, liquid, polymeric material forming the retaining device and for forming the panel, said forming means being caused to follow the periphery of the wheel over a distance sufficiently long for the applied hot, liquid, plastic material to solidify with¬ in said distance into a shape determined by the profile of the forming means. The forming means may be construct¬ ed in many different ways, depending upon dimensions and the polymeric material used, it being important that the solidified material does not adhere to the forming means, and that the temperature at which the materials concerned are sufficiently fluid, is so low as to avoid damage to the forming means, which, if they are bands, must be of a flexible material. Since such a continuous row of nails is often to be coiled up, it is usually necessary to employ a thermoplastic material. It has been found that certain types of poly¬ ethylene have a very low softening point and bring about so little friction in relation to the forming means and solidify so quickly that the entire method will be carried out extremely easily and quickly when using such a material. At the same time the friction in relation to the nails is comparatively insignificant without being so low as to endanger the required securing, but the nail is ejected from the retaining device without much loss of power.
A functionally particularly advantageous embodiment of such an apparatus is characterized in that said forming means comprise two movable bands abutting and following the surface of the wheel so as to define the two edges of the panel, and an additional band for forming the back of the panel, said additional band abutting the outer face of said first-mentioned two bands. The invention will be described in greater detail below with reference to the drawing, in which
fig. 1 shows a part of an apparatus for carrying out the method of the invention, and
5 fig. 2 shows a section taken along the line II-II in fig. 1.
The_drawing shows a part of a wheel 1 whose outer peri¬ phery is provided with grooves 2 for receiving nails 3 supplied from a feeding channel 4. The wheel 1 rotates
10 in the direction shown by the arrow 5 , and the retain¬ ing device for the nails is provided at the upwardly facing part of the wheel where plastic material, pre¬ ferably a thermoplastic polymer, is supplied through a nozzle 6. As appears from fig.- 2 the wheel is provi-
15 ded with a peripherally extending groove 7, and the nails are additionally kept in place by means of two running bands 8, v/hich also serve to define the region in which the plastic material is to solidify to form the panel 10 of the retaining device. Simultaneously
20 with this, the plastic material will penetrate down between the nails and into the groove 7 that has such a depth as to form small projections which grip each nail and have a clearly weakened line at the side of the nail facing away from the panel 10. To assist a quite
25 precise casting of the panel, a running band 9 is pro¬ vided that abuts on the top of the two bands 8, and which thereby defines completely the mold cavity in which the panel is to be formed.

Claims

P a t e n t C l a i m s
1. A method of producing a retaining device for nails to form a row of nails for use in a nail gun, the nail heads preferably having an at least approximately conical underside, said retaining device consisting of at least one panel of polymeric, preferably thermo¬ plastic material abutting one side of the row of nails and having at least one row of projections, which are narrow compared to the width of the panel and extend between the nails to secure them, the nails being disposed in grooves in the peripheral surface on a wheel rotating about a horizontal axis, the polymeric material being applied during the rotation of the wheel, c h a r a c t e r i z e d by the fact that for the purpose of forming said narrow projections with a weakened line or similar indication for release of the nails, said wheel is provided with at least one narrow groove in the peripheral surface of the wheel, said groove extending longitudinally of the row of nails and having approximately the same depth as or a little greater depth than the nail-receiving grooves.
2. An apparatus for carrying out the method according to claim 1, comprising a wheel rotating about a hori¬ zontal axis and having grooves in its outer periphery for receiving each nail, c h a r a c t e r i z e d by at least one groove in the peripheral surface of the wheel extending longitudinally of the row of nail- receiving grooves and having approximately the same depth as or a little greater depth than the nail- receiving grooves, and that movable forming means, e.g. forming bands or forming wheels, are provided for con¬ trolling the spreading of the hot, liquid, polymeric material forming the retaining device and for forming
O the panel, said forming means being caused to follow the periphery of the wheel over a distance sufficiently long for the applied, hot, liquid, plastic material to solidify within said distance into a shape determined by the profile of the forming means.
3. An apparatus according to claim 2, c h a r a c t ¬ e r i z e d in that_ said forming means comprise two movable bands abutting and following the surface of the wheel so as to define the two edges of the panel, and an additional band for forming the back of the panel, said additional band abutting the outer face of said first-mentioned two bands.
EP80900466A 1979-02-22 1980-09-10 Apparatus for producing a retaining device for nails to form a row of nails Expired EP0024086B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK766/79 1979-02-22
DK76679A DK147012C (en) 1979-02-22 1979-02-22 Apparatus for the manufacture of a drum holding device for forming a drum set

Publications (2)

Publication Number Publication Date
EP0024086A1 true EP0024086A1 (en) 1981-02-25
EP0024086B1 EP0024086B1 (en) 1983-03-23

Family

ID=8097310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900466A Expired EP0024086B1 (en) 1979-02-22 1980-09-10 Apparatus for producing a retaining device for nails to form a row of nails

Country Status (11)

Country Link
EP (1) EP0024086B1 (en)
JP (1) JPS56500209A (en)
BE (1) BE881882A (en)
CA (1) CA1146059A (en)
CH (1) CH642586A5 (en)
DK (1) DK147012C (en)
GB (1) GB2053839B (en)
NL (1) NL8020073A (en)
NO (1) NO154958C (en)
SE (1) SE423887B (en)
WO (1) WO1980001790A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114888449B (en) * 2022-04-14 2023-05-23 南京诺淳五金制品有限公司 Laser cutting device and method for chain riveting production

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303632A (en) * 1964-08-03 1967-02-14 Neal M White Nail packaging device
US3432985A (en) * 1965-10-04 1969-03-18 Donald B Halstead Strip packaging machine for nails and other similar articles
SE332591C (en) * 1967-02-01 1972-12-27 Fastener Corp Method and device for producing a band of fasteners
NO125526L (en) * 1968-03-20
SE355545B (en) * 1971-06-15 1973-04-30 Helsingborgs Spikfab Ab

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8001790A1 *

Also Published As

Publication number Publication date
BE881882A (en) 1980-08-22
JPS56500209A (en) 1981-02-26
SE8007394L (en) 1980-10-21
NO154958C (en) 1987-01-21
GB2053839A (en) 1981-02-11
WO1980001790A1 (en) 1980-09-04
GB2053839B (en) 1983-05-18
SE423887B (en) 1982-06-14
CA1146059A (en) 1983-05-10
NO803092L (en) 1980-10-16
DK147012B (en) 1984-03-19
NL8020073A (en) 1980-12-31
NO154958B (en) 1986-10-13
CH642586A5 (en) 1984-04-30
DK76679A (en) 1980-08-23
EP0024086B1 (en) 1983-03-23
DK147012C (en) 1984-09-03

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