CA1146059A - Method of producing a retaining device for nails to form a row of nails, and an apparatus for carrying out the method - Google Patents
Method of producing a retaining device for nails to form a row of nails, and an apparatus for carrying out the methodInfo
- Publication number
- CA1146059A CA1146059A CA000346086A CA346086A CA1146059A CA 1146059 A CA1146059 A CA 1146059A CA 000346086 A CA000346086 A CA 000346086A CA 346086 A CA346086 A CA 346086A CA 1146059 A CA1146059 A CA 1146059A
- Authority
- CA
- Canada
- Prior art keywords
- nails
- row
- panel
- wheel
- polymeric material
- 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.)
- Expired
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
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
Abstract of the Disclosure In the production of rows of nails in running lengths or measured lengths for use in nail guns, the nails (3) are placed in a row of parallel grooves (2) in 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 (7) and intersects the grooves (2) at the centre thereof. Bands (8) are applied on both sides of the groove (7) in spaced relationship with the groove, and a third band (9) is applied on top of the bands (8) to form a cavity defined by the bands (8 and 9) and by the wheel periphery with the groove (7). Liquid resin is introduced into said cavity and solidifies to form a panel (10) which abuts the row of nails and has projections extending between and gripping at least partly around the nails.
Description
11~6059 A method of producin~ 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'''nail 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 rotatin~ about a horizon-tal axis, the pol~ncri~ material belng applied during the rotation of the wheel. Sl;ch a retai~ing device is arranged so that the nails may be ejected from the retaining device without ar.y risks of ma~erial being carried off from the retaining fevice itself, since any material torn off from said devi^e 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 3 303 632 and 3 432 985. 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.
~1~6~59 The object of the present invention is to provide a method and apparatus 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.
According to one aspect of the invention there is provided an apparatus for producing a nail retaining device, which device comprises at least one panel of polymeric material, said panel abutting the side of the ~ '''`
row of nails and having at least one row of projections which extend so far between the nails as to secure the nails against the panel, simultaneously facilitating the release of the nails, said apparatus comprising a rotary wheel,,the outer periphery of which is provided with grooves or receiving a row of nails and with an annular channel extending in the diretion of the row of nails and extending to a depth corresponding approximately to the bottom of the grooves for the nails, and also comprising means for supplying liquid polymeric material to the row of nails, the apparatus further being provided with movable forming means for controlling the spreading of the liuqid polymeric material, said means being caused to abut the wheel over a distance sufficiently long for the supplied liquid polymeric material to solidify and form the panel into a shape determined by the profile of the forming means, and wherein the annular channel in the 114~Q59 - 2a -rotary wheel defining the row of projections is narrow compare with the width of the panel.
According to another aspect of the invention there is provided a method of producing a retaining device for nails, which device comprises at least one panel of polymeric material, said panel abutting the side of the row of nails and having at least one row of projections which extend so far between the nails as to secure the - nails against the panel, simultaneously facilitating the release of the nails, said method comprising confining individual nails to a row of axially-extending grooves formed in the outer periphery of a rotary wheel, said wheel also having at least one narrow annular channel extending in the direction of the row of nails and extending to a depth corre~ponding approximately to the bottom of the grooves for the nails, supplying a liquid polymeric material to the row of nails, applying movable forming means to the periphery of the wheel to control the spreading of the liquid polymeric material for a distance sufficiently long for the supplied liquid polymeric material to solidify and form the panel into a shape determined by the profile of the forming means, the profile of the forming means being so chosen that the projections defined by the annular channel are narrow compared with the width of the panel.
C
1~4~iQS9 - 2b -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 known in connection with other retaining devices.
When the hot, liquid, polymeric material flows down 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 projections 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 prefer-ably have a conical underside, then serves to urge the C
, 11~6~59 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 do~n into said track.
Spreading of the plas~ic material for ~orming 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-s9 ing the spreading of the hot, liquid, polymeric materialforming 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, depenaing upon dimensions and the polymeric material used, it being important lG 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, lt is usually nece8sary to employ a thermoplastic material. It has been found that certain types of poly-ethylene have a very low softening poirt and bring about so little friction in relation to ~he 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.
~4S~S9 The invention will be described in greater detail below with reference to the drawing, in which ~ig. 1 shows a part of an apparatus for carrying out the method of the invention, and 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. m e wheel 1 ~otates 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. A~ appears from fig. 2 the wheel is provi-ded wlth a peripherally extending groove 7, and thenails are additionally kept in place by means of two running bands 8, which also serve to define the region ln which the plastic material is to solidify to form the panel 10 of the retaining device Simultaneously 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 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.
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 3 303 632 and 3 432 985. 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.
~1~6~59 The object of the present invention is to provide a method and apparatus 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.
According to one aspect of the invention there is provided an apparatus for producing a nail retaining device, which device comprises at least one panel of polymeric material, said panel abutting the side of the ~ '''`
row of nails and having at least one row of projections which extend so far between the nails as to secure the nails against the panel, simultaneously facilitating the release of the nails, said apparatus comprising a rotary wheel,,the outer periphery of which is provided with grooves or receiving a row of nails and with an annular channel extending in the diretion of the row of nails and extending to a depth corresponding approximately to the bottom of the grooves for the nails, and also comprising means for supplying liquid polymeric material to the row of nails, the apparatus further being provided with movable forming means for controlling the spreading of the liuqid polymeric material, said means being caused to abut the wheel over a distance sufficiently long for the supplied liquid polymeric material to solidify and form the panel into a shape determined by the profile of the forming means, and wherein the annular channel in the 114~Q59 - 2a -rotary wheel defining the row of projections is narrow compare with the width of the panel.
According to another aspect of the invention there is provided a method of producing a retaining device for nails, which device comprises at least one panel of polymeric material, said panel abutting the side of the row of nails and having at least one row of projections which extend so far between the nails as to secure the - nails against the panel, simultaneously facilitating the release of the nails, said method comprising confining individual nails to a row of axially-extending grooves formed in the outer periphery of a rotary wheel, said wheel also having at least one narrow annular channel extending in the direction of the row of nails and extending to a depth corre~ponding approximately to the bottom of the grooves for the nails, supplying a liquid polymeric material to the row of nails, applying movable forming means to the periphery of the wheel to control the spreading of the liquid polymeric material for a distance sufficiently long for the supplied liquid polymeric material to solidify and form the panel into a shape determined by the profile of the forming means, the profile of the forming means being so chosen that the projections defined by the annular channel are narrow compared with the width of the panel.
C
1~4~iQS9 - 2b -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 known in connection with other retaining devices.
When the hot, liquid, polymeric material flows down 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 projections 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 prefer-ably have a conical underside, then serves to urge the C
, 11~6~59 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 do~n into said track.
Spreading of the plas~ic material for ~orming 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-s9 ing the spreading of the hot, liquid, polymeric materialforming 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, depenaing upon dimensions and the polymeric material used, it being important lG 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, lt is usually nece8sary to employ a thermoplastic material. It has been found that certain types of poly-ethylene have a very low softening poirt and bring about so little friction in relation to ~he 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.
~4S~S9 The invention will be described in greater detail below with reference to the drawing, in which ~ig. 1 shows a part of an apparatus for carrying out the method of the invention, and 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. m e wheel 1 ~otates 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. A~ appears from fig. 2 the wheel is provi-ded wlth a peripherally extending groove 7, and thenails are additionally kept in place by means of two running bands 8, which also serve to define the region ln which the plastic material is to solidify to form the panel 10 of the retaining device Simultaneously 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 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 (4)
1. An apparatus for producing a nail retaining device, which device comprises at least one panel of polymeric material, said panel abutting the side of the row of nails and having at least one row of projections which extend so far between the nails as to secure the nails against the panel, simultaneously facilitating the release of the nails, said apparatus comprising a rotary wheel, the outer periphery of which is provided with grooves for receiving a row of nails and with an annular channel extending in the direction of the row of nails and extending to a depth corresponding approximately to the bottom of the grooves for the nails, and also comprising means for supplying liquid polymeric material to the row of nails, the apparatus further being provided with movable forming means for controlling the spreading of the liuqid polymeric material, said means being caused to abut the wheel over a distance sufficiently long for the supplied liquid polymeric material to solidify and form the panel into a shape determined by the profile of the forming means, and wherein the annular channel in the rotary wheel defining the row of projections is narrow compared with the width of the panel.
2. An apparatus according to claim 1, wherein the narrow channel has a depth slightly greater than the depth of the grooves so as to form a weakening point in the projections enclosing the nails.
3. An apparatus according to claim 1 or claim 2, wherein the forming means comprises two movable bands abutting and following the surface of the wheel 80 as to define two edges of the panel, and an additional band for forming a back of the panel, said additional band abutting the outer face of said first-mentioned two bands.
4. A method of producing a retaining device for nails, which device comprises at least one panel of polymeric material, said panel abutting the side of the row of nails and having at least one row of projections which extend so far between the nails as to secure the nails against the panel, simultaneously facilitating the release of the nails, said method comprising confining individual nails to a row of axially-extending grooves formed in the outer periphery of a rotary wheel, said wheel also having at least one narrow annular channel extending in the direction of the row of nails and extending to a depth corresponding approximately to the bottom of the grooves for the nails, supplying a liquid polymeric material to the row of nails, applying movable forming means to the periphery of the wheel to control the spreading of the liquid polymeric material for a distance sufficiently long for the supplied liquid polymeric material to solidify and form the panel into a shape determined by the profile of the forming means, the profile of the forming means being so chosen that the projections defined by the annular channel are narrow compared with the width of the panel.
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 (1)
| Publication Number | Publication Date |
|---|---|
| CA1146059A true CA1146059A (en) | 1983-05-10 |
Family
ID=8097310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000346086A Expired CA1146059A (en) | 1979-02-22 | 1980-02-20 | Method of producing a retaining device for nails to form a row of nails, and an apparatus for carrying out the method |
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)
| 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)
| 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 |
-
1979
- 1979-02-22 DK DK76679A patent/DK147012C/en not_active IP Right Cessation
-
1980
- 1980-02-20 NL NL8020073A patent/NL8020073A/en not_active Application Discontinuation
- 1980-02-20 CA CA000346086A patent/CA1146059A/en not_active Expired
- 1980-02-20 GB GB8032698A patent/GB2053839B/en not_active Expired
- 1980-02-20 CH CH791980A patent/CH642586A5/en not_active IP Right Cessation
- 1980-02-20 JP JP50058580A patent/JPS56500209A/ja active Pending
- 1980-02-20 WO PCT/DK1980/000014 patent/WO1980001790A1/en active IP Right Grant
- 1980-02-22 BE BE0/199522A patent/BE881882A/en not_active IP Right Cessation
- 1980-09-10 EP EP80900466A patent/EP0024086B1/en not_active Expired
- 1980-10-16 NO NO80803092A patent/NO154958C/en unknown
- 1980-10-21 SE SE8007394A patent/SE423887B/en not_active IP Right Cessation
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 |
| NO803092L (en) | 1980-10-16 |
| DK147012B (en) | 1984-03-19 |
| EP0024086A1 (en) | 1981-02-25 |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |