DK142401B - Method for recovering through seams or nails in thick workpieces and apparatus for carrying out the method. - Google Patents

Method for recovering through seams or nails in thick workpieces and apparatus for carrying out the method. Download PDF

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Publication number
DK142401B
DK142401B DK391277AA DK391277A DK142401B DK 142401 B DK142401 B DK 142401B DK 391277A A DK391277A A DK 391277AA DK 391277 A DK391277 A DK 391277A DK 142401 B DK142401 B DK 142401B
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DK
Denmark
Prior art keywords
seam
seams
nails
workpiece
cylinder
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DK391277AA
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Danish (da)
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DK142401C (en
DK391277A (en
Inventor
Arvo Johannes Karlsson
Olle Lennart Valfri Wahlstroem
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Wahlstroem Ab O
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Publication of DK391277A publication Critical patent/DK391277A/da
Publication of DK142401B publication Critical patent/DK142401B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27FDOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00Nailing or stapling; Nailed or stapled work
    • B27F7/02Nailing machines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Disintegrating Or Milling (AREA)
  • Paper (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Sewing Machines And Sewing (AREA)

Description

(¾ (11) FREMLÆ6GELSESSKRIFT 1 U2401 \F>j^ )(¾ (11) PRESENTATION 1 U2401 \ F> j ^)

DANMARK «"1 in,. Cl.· B 27 F 7/DODENMARK «" 1 in., Cl. · B 27 F 7 / DO

• (21) Ansøgning nr. 59^^77 (22) Indleveret den 2» Sep.• (21) Application No. 59 ^^ 77 (22) Filed on 2 »Sep.

(24) Løbedeg 2. βθρ. 1977 (44) Ansøgningen fremlegt og fremlsBBfleteesskriftet offentliggjort den 27 · Oict . 1 98θ(24) Run stage 2. βθρ. 1977 (44) The application submitted and the petition published on 27 · Oict. 1 98θ

DIREKTORATET FORDIRECTORATE OF

PATENT- OG VAREMÆRKEVÆSENET (30) Prioritet begæret fra denPATENT AND TRADEMARKET SYSTEM (30) Priority requested from it

8. sep. 1976a 7609907, SESep 8 1976a 7609907, SE

(71) 0. WAHLSTROEM AB, Fredsgatan 2, S-641 JO Kstrlneholra, SE.(71) 0. WAHLSTROEM AB, Fredsgatan 2, S-641 JO Kstrlneholra, SE.

(72) Opfinder: Arvo Johannes Karlsson, Box 114, s-641 01 Katrineho^m, SE:(72) Inventor: Arvo Johannes Karlsson, Box 114, s-641 01 Katrineho ^ m, SE:

Olle Lennart Valfrid Wabilgtroein, Soermlandsgatan 5, S-641 00 Kafcri« neholm, SE.Olle Lennart Valfrid Wabilgtroein, Soermlandsgatan 5, S-641 00 Kafcri «neholm, SE.

(74) Fuldmægtig under sagens behandling:(74) Plenipotentiary in the proceedings:

Kontor for Industriel Eneret v. Svend Schønnlng.Office of Industrial Eneret v. Svend Schønnlng.

(54) Fremgangsmåde til inddrivning af gennemgående søm eller spigre i tykke arbejdsstykker og apparat til udøvelse af fremgangsmåden.(54) Method for recovering through seams or nails in thick workpieces and apparatus for carrying out the process.

Den foreliggende opfindelse angår en fremgangsmåde og et apparat til inddrivning af gennemgående søm eller spigre i tykke arbejdsstykker, fx lastpaller, ved hjælp af et hydraulisk drpvet stempel.The present invention relates to a method and apparatus for driving through seams or nails into thick workpieces, eg pallets, by means of a hydraulically driven piston.

Ved fastsømning eller fastspigring af tykke arbejdsstykker, hvor flere dele skal sammenføjes, har man undgået gennemgående søm eller spigre, fordi man er tvunget til at anvende lange, forholdsvis tynde søm eller spigre, som let bøjes ved inddrivningen, som sædvanligvis i industriel målestok foregår ved hjælp af et hydraulisk drevet stempel. Fx bør sømmene ved sømning gennem et arbejdsstykke med en tykkelse på 120 mm have en længde på 140 mm og en tykkelse på kun 142401 2 ca. 3 mm for at arbejdet ved indpresningen af sømmene ikke skal blive for.stort. Man har derfor valgt i stedet at sømme med kortere søm fra begge sider, hvilket naturligvis medfører et dobbelt så stort sømforbrug og flere arbejdstrin, bl.a. vending af arbejdsstykket.When sewing or fastening thick workpieces where multiple parts need to be joined, continuous seams or nails have been avoided because they are forced to use long, relatively thin nails or nails which are easily bent during recovery, which is usually done on an industrial scale at using a hydraulically driven piston. For example, when sewing through a workpiece with a thickness of 120 mm, the seams should have a length of 140 mm and a thickness of only about 14 mm. 3 mm so that the work on pressing the seams should not be enlarged. It has therefore been chosen instead to sew with shorter stitches from both sides, which naturally entails twice as much stitching consumption and several working steps, among other things. reversing the workpiece.

Problemet med at slå lange søm i består i at sømmet under den første del af inddrivningen må holdes i et så fast styrende greb at det ikke kan bøje sig. Ved konventionel indslåning af søm ved hjælp af et hydraulisk drevet stempel holdes sømmet af en fjederbelastet klemme. Denne holder dog kun sømmet på plads. Hvis sømmet bøjer sig fører det klemmen til siden. Fjederbelastningen giver således ikke noget fast styrende greb.The problem with turning long nails is that the nails during the first part of the drive must be held in such a firmly controlled grip that it cannot bend. In conventional stitch insertion using a hydraulically driven piston, the seam is held by a spring loaded clamp. However, this one only holds the seam in place. If the seam bends, it leads to the clamp. Thus, the spring load does not provide any firm controlling grip.

Ifølge den foreliggende opfindelse er der nu tilvejebragt en fremgangsmåde som gør det muligt at inddrive gennemgående søm eller spigre i tykke arbejdsstykker ved hjælp af et hydraulisk drevet stempel, idet sømmet holdes i et fast styrende greb således at det ikke kan bøje sig. Fremgangsmåden ifølge opfindelsen er ejendommelig ved at sømmet under inddrivningen holdes i et fast greb af en diametralt med to hinanden under 90°s vinkel krydsende gennemboringer udskåret cylinder, idet den ene gennemborings diameter er lig med sømmets største tværsnitsdimension og den anden gennemborings diameter lig med det hydraulisk drevne stempels diameter og at der mellem de to gennemboringer åbner sig to kileformede og hinanden modstående sektorer til kileformet overgang mellem gennemboringerne og idet cylinderen drejes således at sømmet under den første del af inddrivningen støttes af væggene i nævnte ene gennemboring og stemplet under den senere del af inddrivningen føres gennem nævnte anden gennemboring.According to the present invention, there is now provided a method which allows to retract through seams or nails into thick workpieces by means of a hydraulically driven piston, the seam being held in a fixed guiding grip so that it cannot bend. The method according to the invention is characterized in that the seam during retention is held in a firm grip by a diametrically intersecting cylinder with two mutually intersecting 90 ° angles, the diameter of one piercing being equal to the largest cross-sectional dimension of the seam and the diameter of the other piercing equal to the hydraulic driven piston diameter and two wedge-shaped and opposing sectors open between the two bores for wedge-shaped transition between the bores and rotate the cylinder so that the seam during the first portion of the drive is supported by the walls of said one bore and the piston below the lateral portion. of the drive-in is passed through said second piercing.

Ifølge en foretrukket udførelsesform for fremgangsmåden ifølge opfindelsen tilvejebringes vegning (bøjning og/eller stukning) af sømmet ved at det, når det trænger gennem arbejdsstykket bringes til at ramme en drevet, roterende skive, som roteres med en periferihastighed der i det mindste i hovedsagen er den samme som den hastighed hvormed sømmet fremdrives.According to a preferred embodiment of the method according to the invention, weighing (bending and / or stitching) of the seam is provided by impinging upon the workpiece to hit a driven, rotating disc which is rotated at a peripheral speed which is at least substantially the same. the same as the speed at which the seam is propelled.

Den foreliggende opfindelse angår også et apparat, som omfatter et hydraulisk drevet stempel til inddrivning af sømmene, til gennemførelse af fremgangsmåden ifølge opfindelsen, hvilket apparat er ejendommeligt ved at det har en diametralt med to hinanden under en vinkel på 90° krydsende gennemboringer udskåren 3 142401 cylinder, idet den ene gennemborings diameter er lig med sømmets største tværsnitsdimension og den anden gennemboringsdiameter er lig med det hydraulisk drevne stempels diameter og at mellem de to gennemboringer to kileformede og hinanden modstående sektorer åbner til kileformet overgang mellem gennemboringerne.The present invention also relates to an apparatus comprising a hydraulically driven piston for driving the seams, for carrying out the method according to the invention, which is characterized in that it has a diametrically arranged two diameters at an angle of 90 ° intersecting holes. cylinder, the diameter of one piercing being equal to the largest cross-sectional dimension of the seam, and the other piercing diameter being equal to the diameter of the hydraulically driven piston and having two wedge-shaped and opposing sectors between the two holes opening to the wedge-shaped transition between the holes.

Ifølge en foretrukket udførelsesform for apparatet ifølge opfindelsen har det en drevet, roterende skive, som er placeret således i apparatet, at den rammes af det gennem arbejdsstykket fremtrængte søm og er indrettet til at kunne roteres med en periferihastighed som i det mindste i det væsentlige er den samme som den hastighed hvormed sømmet fremdrives.According to a preferred embodiment of the apparatus according to the invention, it has a driven, rotating disk which is positioned in the apparatus so as to be struck by the seam projected through the workpiece and arranged to be rotatable at a peripheral speed which is at least substantially the same as the speed at which the seam is propelled.

Opfindelsen belyses nærmere i det følgende under henvisning til tegningen, som viser forskellige arbejdstrin under en udførelsesform for fremgangsmåden ifølge opfindelsen, idet fig. 1 og 2 viser indføring af et søm i et apparat ifølge opfindelsen, fig. 3 og 4 viser den første del af sømmets inddrivning i et arbejdsstykke, fig. 5 og 6 viser den senere del af sømmets inddrivning i arbejdsstykket og fig. 7 og 8 viser afslutningen af den sidste del af sømmets inddrivning i arbejdsstykket.BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated in more detail below with reference to the drawing, which shows various working steps during one embodiment of the method according to the invention, 1 and 2 show the insertion of a nail into an apparatus according to the invention; Figures 3 and 4 show the first part of the seam's retraction in a workpiece; 5 and 6 show the later part of the seam's retraction in the workpiece and fig. 7 and 8 show the end of the last part of the seam's recovery in the workpiece.

Ifølge figurerne omfatter apparatet ifølge opfindelsen et hydraulisk drevet stempel 1 og en sømholder i form af en diametralt med to hinanden under en vinkel på 90° krydsende gennemboringer 2,3 med forskellige diametre udskåren cylinder 4, mellem hvilke gennemboringer to kileformede og hinanden modstående sektorer 5,6 åbner til kileformet overgang mellem gennemboringerne. Den viste udførelsesform indbefatter en drevet roterende skive 7, som vil blive beskrevet nærmere nedenfor. Gennemboringen 2 med større diameter har en diameter der svarer til inddrivningsstemplets 1 diameter, mens gennemboringen 3 har en diameter som ved et rundt søm 8 svarer til sømmets diameter (ved søm med andet tværsnit den største tværsnitsdimension, fx længden af diagonalen med to hinanden modstående hjørner i tilfælde af at tværsnittet har form af en ligesidet firkant).According to the figures, the apparatus according to the invention comprises a hydraulically driven piston 1 and a nail holder in the form of a two-diameter diametrically at an angle of 90 ° intersecting holes 2.3 with different diameters cut-out cylinder 4, between which piercings two wedge-shaped and opposing sectors 5 , 6 opens to wedge-shaped transition between the bores. The embodiment shown includes a driven rotary disc 7, which will be described in more detail below. The larger diameter bore 2 has a diameter corresponding to the diameter of the drive piston 1, while the bore 3 has a diameter which corresponds to the diameter of the seam at a round seam 8 (at the second cross-section the largest cross-sectional dimension, e.g. the length of the diagonal with two opposite corners in the case that the cross-section takes the form of an equilateral square).

Når et søm indføres i apparatet (fig. 1 og 2, se specielt fig. 2, der ligesom fig. 4, 6 og 8 viser en skæring gennem cylinderen 4 i centrum af gennemboringerne 2 og 3) er gennemboringen 2 indret- 142401 4 tet lodret. Sømmet indføres til at ligge an med sin spids mod et arbejdsstykke, i dette tilfælde en lastpalle 9. En afrundet kam 10 føres opad således at den møder en hæl 11 på cylinderen 4 og denne drejes 90° (fig· 3). Derved passerer sømmet de åbne sektorer 5,6 i cylinderen og holdes i et fast styrende greb af væggene i gennemboringen 3, som har tilnærmelsesvis sømmets diameter. Derefter begynder det hydraulisk påvirkede stempel 1 at inddrive sømmet 8, hvorunder sømholderen tvangsstyrer sømmet under ca. den halve inddrivningsoperation. Straks inden stemplet 1 når cylinderen 4 frigøres kammen 10 (fig. 5) på mekanisk måde, således at cylinderen 4 ved hjælp af en fjeder 12 slår tilbage 90° til udgangsstillingen, hvorved sømhovedet og stemplet 1 under den fortsatte inddrivning kan passere gennem gennemboringen (fig. 7 og 8).When a nail is inserted into the apparatus (Figs. 1 and 2, see in particular Fig. 2, which, like Figures 4, 6 and 8, shows a cut through the cylinder 4 in the center of the bores 2 and 3), the bore 2 is arranged. vertical. The seam is inserted to abut with its tip toward a workpiece, in this case a pallet 9. A rounded cam 10 is moved upwardly so that it meets a heel 11 of the cylinder 4 and is rotated 90 ° (Fig · 3). Thereby, the seam passes the open sectors 5.6 in the cylinder and is held in a firmly controlling grip by the walls of the piercing 3, which is approximately the diameter of the seam. Thereafter, the hydraulically actuated piston 1 begins to retract the seam 8, under which the seam holder forces the seam for approx. the half recovery operation. Immediately before the piston 1, when the cylinder 4 is released, the cam 10 (Fig. 5) is mechanically released, so that the cylinder 4 strikes 90 ° back to its initial position by means of a spring 12, whereby the nail head and piston 1 can pass through the piercing during the continued drive ( Figures 7 and 8).

Når sømmet trænger ud af arbejdsstykket 9 støder det mod et modhold i form af en roterende skive 7, som roterer med ca. samme periferihastighed som hastigheden hvormed sømmet fremdrives. Den roterende skive er på sin overflade forsynet med riller 13, som udgøres af spor der udgår fra en tænkt indre cirkel og udgøres af halve tangenter til denne ud mod skivens periferi. Samtidigt med at modholdet bøjer sømmet styres gennem rillerne 13 sømmets bøjning i rotationsretningen. Eftersom sømmet ikke bøjes i træets fiberretning formindskes risikoen for at træet flækker. En vegning på denne måde er særlig hensigtsmæssig når flere søm passerer inden for et begrænset område af arbejdsstykket såsom ved hjørnerne af en lastpalle, hvor flere søm samtidigt kan vegnes af samme roterende skive.When the seam exits the workpiece 9, it bears against a stop in the form of a rotating disc 7, which rotates by approx. the same peripheral speed as the speed at which the seam is propelled. The rotating disc is provided on its surface with grooves 13, which are formed by grooves starting from a conceived inner circle and formed by half tangents thereto towards the periphery of the disc. At the same time as the counter bend the seam is guided through the grooves 13 the bend of the seam in the direction of rotation. Since the seam does not bend in the fiber direction of the wood, the risk of the wood being diminished is reduced. A weighing in this way is particularly convenient when multiple stitches pass within a limited area of the workpiece such as at the corners of a pallet where multiple stitches can be simultaneously weighed by the same rotating disc.

I stedet for at lade sømmets spids ved indføringen i apparatet passere gennem hele cylinderen 4 og ud til anlægningen mod arbejdsstykket kan man lade gennemboringen 2 afgrænses nedad af en konisk bund bestående af dele, som er fjederholdte og kan presses til hver sin side ved sømmets inddrivning. Desuden kan cylinderen 4 føres nedad mod arbejdsstykket og den afrundede kam 10 i stedet for at denne senere føres opad mod cylinderen.Instead of passing the tip of the seam at the insertion into the apparatus through the entire cylinder 4 and out to the abutment against the workpiece, the bore 2 can be delimited downwards by a conical bottom consisting of parts which are spring-held and can be pressed to each side by the seam's retraction. . In addition, the cylinder 4 can be moved downwardly towards the workpiece and the rounded cam 10 instead of being later moved upwardly towards the cylinder.

Fremgangsmåden ifølge opfindelsen til inddrivning af gennemgående søm er fx afprøvet i et system til fremstilling af lastpaller bestående af tre meder og på hver og en af disse tre distanceklodser og oven på disse et lastdæk af sammenlimede fiberskiver. Disse dele sammenføjes i et arbejdstrin ved at 27 søm samtidigt trykkes ind 3 og 3 i 9 bærepunkter og vegnes mod 9 drejeskiver. På denne måde spares i 5 142401 forhold til tidligere anvendt teknik 27 søm og et arbejdstrin hvori pallen vendes inden den sømmes videre fra bagsiden.The method according to the invention for driving through seams, for example, has been tested in a system for producing pallets consisting of three rods and on each of these three spacer blocks and on top of these a cargo deck of glued fiber discs. These parts are joined together in a working step by simultaneously pushing 27 stitches 3 and 3 into 9 support points and weighing against 9 turntables. In this way, 27 stitches and a working step in which the pallet is turned before being further stitched from the back are saved in relation to previously used technique.

Fremgangsmåden og apparatet ifølge opfindelsen kan ganske givet om ønsket også anvendes ved mindre tykke arbejdsstykker, hvor risi-koen for sømmets bøjning er ringe selv uden anvendelse af opfindelsen. Arbejdsstykkets tykkelse begrænses i første række opad af ar-bejdskapaciteten for det hydraulisk .drevne stempel. I princippet er' det tænkeligt at seriekoble et antal sømholdere (cylindre), som ved søminddrivningens begyndelse alle holder sømmet og senere efter tur drejes til at lade det hydraulisk drevne stempel passere gennem den: bredere gennemboring i den respektive cylinder.The process and apparatus according to the invention can, of course, if desired, also be used with less thick workpieces, where the risk of bending of the seam is low even without application of the invention. The thickness of the workpiece is primarily limited upwards by the working capacity of the hydraulically driven piston. In principle, it is conceivable to serially connect a number of nail holders (cylinders) which at the beginning of the nail retraction all hold the nail and later turn in turn to allow the hydraulically driven piston to pass through it: wider piercing in the respective cylinder.

DK391277AA 1976-09-08 1977-09-02 Method for recovering through seams or nails in thick workpieces and apparatus for carrying out the method. DK142401B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7609907A SE399002B (en) 1976-09-08 1976-09-08 METHOD AND DEVICE FOR THROUGH NAILING OF THICK WORKS
SE7609907 1976-09-08

Publications (3)

Publication Number Publication Date
DK391277A DK391277A (en) 1978-03-09
DK142401B true DK142401B (en) 1980-10-27
DK142401C DK142401C (en) 1981-03-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DK391277AA DK142401B (en) 1976-09-08 1977-09-02 Method for recovering through seams or nails in thick workpieces and apparatus for carrying out the method.

Country Status (8)

Country Link
BE (1) BE858430A (en)
DE (1) DE2740109A1 (en)
DK (1) DK142401B (en)
GB (1) GB1543469A (en)
LU (1) LU78100A1 (en)
NL (1) NL7709796A (en)
NO (1) NO142095C (en)
SE (1) SE399002B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106737425B (en) * 2016-12-19 2023-05-30 山东极光胶业有限公司 Novel nail shooter

Also Published As

Publication number Publication date
DK142401C (en) 1981-03-23
NO142095B (en) 1980-03-17
NO142095C (en) 1980-06-25
DE2740109A1 (en) 1978-03-09
BE858430A (en) 1978-03-06
DK391277A (en) 1978-03-09
GB1543469A (en) 1979-04-04
NO773096L (en) 1978-03-09
NL7709796A (en) 1978-03-10
LU78100A1 (en) 1978-01-23
SE399002B (en) 1978-01-30

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