US3290916A - Wire drawing apparatus - Google Patents

Wire drawing apparatus Download PDF

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Publication number
US3290916A
US3290916A US209658A US20965862A US3290916A US 3290916 A US3290916 A US 3290916A US 209658 A US209658 A US 209658A US 20965862 A US20965862 A US 20965862A US 3290916 A US3290916 A US 3290916A
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United States
Prior art keywords
wire
die
tongs
treatment machine
stroke
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Expired - Lifetime
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US209658A
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English (en)
Inventor
Louis Claus
Hilgers Karl
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/20—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes from stock of essentially unlimited length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/28—Carriages; Connections of grippers thereto; Grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C19/00—Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/006—Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction

Definitions

  • the present invention concerns an installation for deforming wires and the like, comprising a drawing device in combination with a treatment machine such as a press disposed at the end of the wire-transport path. It does in fact concern such an installation wherein the drawing device in addition to a ram rod has a drawing die with drawing tongs which execute a movement relative to this die firmly clamping the wire therein during each drawing stroke, and wherein the treatment machine is provided with a draw-in device.
  • the draw-in device of the treatment machine serves to introduce the wire, whose cross-section has been reduced in the drawing device, into the treatment machine in synchronism with the stroke of the treatment machine.
  • the present arrangement provides an arrangement in which a synchronized co-operation of drawing device and treatment machine is not required.
  • the solution of the problem consists in the feature that the drawing die and drawing tongs are arranged integrally, independently of their movement relative to one another, on the frame of the drawing device so as to be longitudinally displaceable in the direction of feed of the wire, thus preferably on a sliding guide the length of which amounts to a mul- 3,290,916 Patented Dec. 13, 1966 tiple of the maximum draw-in length required per stroke of the treatment machine.
  • the drawing-die means and the drawing tongs of the clamping means are displaceably interconnected by means of the connecting rods of hydraulic working cylinders of the fluid-responsive means and the working cylinders are to be connected to a control or master cylinder, the output of which is somewhat greater than the total output of the working cylinder.
  • the amount of the excess liquid supply is diverted via an excess pressure valve into a storage container from which the additional liquid required for each stroke is induced.
  • contacts are arranged in the path of the feed means of the wire-drawing device (substantially comprising the drawing die, the drawing tongs and working cylinders) which includes the sliding guide; the contacts are actuated by contact levers mounted on the drawing device and of which contact levers a stop facing the ramming tongs is adapted to disengage an electric switch coupling for actuating the control cylinder, and a stop facing the draw-in device of the treatment machine adapted to engage this coupling.
  • a further preferred feature of the invention consists in the provision of a further stop behind the contact stop facing the drawing-in device in the direction of the drawing-in device, which stop is also to be actuated by the contact lever mounted on the drawing device, and which is adapted to disengage an electric switch coupling for actuating the draw-in device; the stops constitute an ad justable stop means on the support for the slide for limiting the reciprocating movement.
  • the drawing device is lockable on the frame of the drawing apparatus by a releasable index means and in this position connected by means of connecting rods projecting from the working cylinders, to rods disposed in extension thereof, arranged so as to be longitudinally displaceable in the ram tongs and provided with stops and having such a length that the stops of these rods, after effecting the coupling, are able to move the ram tongs a short distance towards the end of a piston stroke in the direction of the treatment machine in the same direction.
  • the ram tongs are drawn back by means of springs against stops adjustable to a certain distance relative to the advanced ram tongs.
  • a crosshead slide or the like connected with the connecting rod thereof is provided and driven in such a manner that during a variable-time unit the overall length of stroke of the drawing tongs exceeds the draw-in length of this machine caused by 'the draw-in device of the treatment machine by an adjustable amount.
  • FIG. 1 is a schematic elevational view of the overall arrangement of an installation for deforming wires and the like in accordance with the invention.
  • FIG. 2 is a diagrammatic, fragmentary sectional view of the driving arrangement of the drawing device.
  • a wire 2 to be unwound from a pay-out reel 1 first passes into a wire-drawing apparatus 3.
  • the wire 2 is reduced in a diameter in the device 3 and then continues via a draw-in device 4, constituting a feed means engageable with the wire upon reduction of its cross-section for intermittently advancing it for further processing into a treatment machine 5 which may for instance be a cold-forming or molding press.
  • the draw-in device 4 thus feeds the drawn wire 2 into the treatment machine 5 to an extent necessary for synchronised treatment thereby.
  • the drawing device 3 on its support means or frame 6 has ramming tongs 7, or inserting means which will be explained in detail hereinafter, and also the actual drawing mechanism or drawing-die means 8 which includes a drawing die 9 and drawing tongs 10 as clamping means.
  • the drawing die 9 carries on its sides working cylinders 11 with double-acting pistons 12 and piston rods 13 or 14 together forming a fluid-responsive means for displacing the clamping means relatively to the drawing die.
  • the piston rods 13 are thus rigidly connected to the drawing tongs 10.
  • the piston rids 14 support coupling ends 14a.
  • the pistons 12 and working cylinders 11 are actuated by means of a control means including a master cylinder 15 (see FIG. 2), which in turn is connected to a mechanism for controlling the pistons of the master cylinder and including driving motor 17 via a transmission gearing 16.
  • a master cylinder 15 see FIG. 2
  • the drawing die 9 and the drawing tongs 10 with one stroke move towards one another and away from one another with the second stroke.
  • clamping jaws 18 arranged on the drawing tongs 10 are closed, so that the wire 2 is firmly clamped. This causes the die 9 to be drawn over the wire 2.
  • the clamping jaws however are open, thus preventing a displacement of the wire 2 relative to the drawing die 9.
  • a sliding runner 19 of the drawing device 8 can also be seen on each side of the working cylinders 11. These sliding runners 19 are adapted to slide on a .guide 20 which is rigidly mounted on the frame 6.
  • the length of the guide 20 should preferably amount to arnultiple of the wire draw-in length of the treatment machine 5 required per stroke.
  • the drawing device 8 also has a contact lever 21 mounted thereon which is adapted to actuate several contacts 22, 23, 24 mounted in the path of the drawing device 8 reciprocated on the .guide 20 and spaced along the guide path while connected in circuit with the fluid-responsive means.
  • contact of the contact lever 21 with the contact stop 22 causes a switching clutch situated in the transmission gearing 16 to be disengaged. This causes the power transmission from the driving motor 17 of the drawing device 8 to the pistons 12 of the working cylinders 11 to be interrupted. The drawing device is thus stopped.
  • the switching clutch 25 is engaged and the drawing device actuated.
  • the feed device 4 of the treatment machine 5 is put out of action by means of a clutch (not shown).
  • the displaceable arrangement of the drawing device 8 has the advantage compared with known arrangements that it is no longer necessary to synchronize accurately the stroke of the treatment machine 5 with the drawing device 8 via a complicated control gearing. It is necessary only to adjust the draft or stroke of the drawing device 8 in such a manner that its minimum output corresponds to the wire-length increments required by the treatment machine 5.
  • the drawing stroke or draft is conveniently so adjusted however that the drawn wire length is somewhat greater than the wire length requirement of the treatment machine, and then accurate regulation is not necessary.
  • the difference between the draft or stroke of the drawing device 8 occuring with the above mentioned adjustment and the wire length requirement of the treatment machine 5 acts so as to cause the drawing device 8 to slide away slowly from the treatment machine 5 on the sliding guide 20.
  • This arrangement is also associated with a warning indication (not shown) for the operator of the installation; it is also associated with a stroke control for the draw-in mechanism, in order to avoid the draw-in device being disengaged during its advance. Otherwise it would be possible for the length of wire drawing required for the treatment machine 5 not to be achieved, which could lead to a breakdown of the treatment machine 5.
  • the driving arrangement for the drawing device is shown in more detail in FIG. 2.
  • the two working cylinders 11 are interconnected by means of the conduits 26.
  • One of the two cylinders 11 has displaceable hydraulic conduits 27 connected thereto which lead to the control cylinder 15.
  • the control cylinder 15 has two suction conduits 28 connected thereto, through which the liquid necessary for actuating the piston 12 in the working cylinders 11 is induced from a tank 29.
  • These suction conduits 28 each have a nonreturn valve 30 and an excess pressure valve 31.
  • the purpose of the excess pressure Valves 31 is explained below:
  • the displacement of the control cylinder 15 in accordance with a feature of the invention is selected to be greater than the capacity of the working cylinder 11. With each stroke of the control cylinder 15 the surplus hydraulic liquid is forced out via the excess pressure valve 31 into the tank 29.
  • the excess-pressure valves 31 are adapted to be adjusted to the momentarily required liquid pressure, which in any case must be higher than is required in accordance with the drawing force.
  • a crosshead slide 32 which is guided in a crosshead guide 33 serves the guidance of the connecting rod 34 of the control cylinder 15.
  • the driving motor 17 is constructed preferably to be continuously regulable, whereby it is possible, in combination with the transmission gearing 16, to obtain adjustment of the wire-feed increment very sensitively to the input required by the machine 5.
  • inserting means in the form of ram tongs 7 are also provided on the frame 6 of the drawing device 3.
  • the ram tongs 7 are mounted so as to be longitudinally displaceable in the direction of the Wire feedv Springs 35 are thus intended to draw the ram tongs in an unloaded state against adjustable stops 36 in the direction of the wire pay-out reel 1.
  • the ram tongs in an unloaded state against adjustable stops 38 mounted therein so as to be longitudinally displaceable in the direction of the wire feed.
  • These rods 37 moreover form releasable connecting means with coupling halves 39 by means of which they are coupled to the connecting rods 14 of the fluid-responsive means 11, 12 etc.
  • the drawing device 8 For ramming in a wire 2 the drawing device 8 is slid in the direction of the tongs 7 and looked at a rearward location with an index locking device 4% so as to be non-displaceable on the frame 6 via an index -11 situated on the frame 6. Then the rods 37 and the connecting rods 14 are interconnected via their couplings 39 and 14a. The ram tongs 7 is then released by means of an actuating toggle (not shown in the drawing) and the wire end to be rammed is advanced to the drawing die 9. On eliminating the release of the ram tongs 7, the drawing device 8 is engaged in by means of a separate switch (also not shown), whilst the switch contacts 22 and 23 are switched off.
  • these rods 37 are reciprocated, they then abut at the end of the stroke of the pistons 12 With their stops 38 against the ram tongs 7 in the direction of the treatment machine 5 and advance the tongs 7 somewhat in the direction of the treatment machine.
  • the tongs 7 are thus engaged over a small or large distance.
  • the tongs 7 are then drawn back by the springs 35 against the stops 36 in the direction of the Wire pay-out reel 1.
  • a Wire guide 43 is mounted on the frame 6 behind the ram tongs 7, through which guide the wire 2 is adapted to slide.
  • the aforemen tioned ramming operation is repeated until the leading end of the drawn wire is inserted between the clamping jaws 18 of the drawing tongs 10.
  • the jaws of these tongs were open until then. They are now closed so as to permit the tongs 10 to clamp the wire in position.
  • drawing of the Wire takes place with the drawing device 8 locked, in that the tongs 1t) advance the wire, thus by the overall length of stroke of the piston 12. This is repeated a number of times until the leading end of the wire has reached the draw-in device 4.
  • the locating device 40, 41 is released and simultaneously the couplings 14a and 39 are released. Furthermore, the electric contact connection 22, 23 is changed over to the operative condition.
  • the draw-in device 4 now draws the wire 2 in synohronism with the treatment machine 5 and hence also the drawing device 8.
  • the switch coupling 25 is adapted to be engaged, whereby the actual drawing process commences in combination with the operation of the treatment machine 5, as already explained before.
  • the displaceable arrangement in accordance with the invention of the drawing die and drawing tongs as a whole independently of its relative movement to one another is adapted to be used not only as described above in connection with installations comprising a drawing device and connected at the end a treatment machine executing in timed sequence alternately a working stroke and an idling stroke, but also in such installations in which the treatment machine does not operate in timed se quence but continuously.
  • a wire-drawing apparatus for substantially intermittently advancing a wire for further processing while reducing its cross-section, said apparatus comprising:
  • intermittently operable feed means engageable with said Wire upon reduction of its cross-section for displacing same in a forward direction
  • drawing-die means movably mounted on said support means for reciprocation along said guide path; clamping means mounted upon said drawing-die means and reciprocable relatively thereto in said direction for releasable entrainment of said wire through said drawing-die means;
  • a wire-drawing apparatus for substantially intermittently advancing a wire for further processing while reducing its cross-section, said apparatus comprising:
  • intermittently operable feed means engageable with said wire upon reduction of its cross-section for displacing same in a forward direction
  • clamping means mounted upon said drawing-die means and reciprocable relatively thereto in said direction for releasable entrainment of said wire through said drawing-die means;
  • said apparatus further comprising a pair of electrical contacts spaced along said guide path for operation by said drawing-die means upon displacement thereof by said feed means, and circuit means operatively connecting said contacts with said fluidresponsive means for controlling the operation of said clamping means in accordance with the movement of said drawing-die means along said guide path.
  • An apparatus as defined in claim 2 further comprising an additional contact disposed along said guide path forwardly of the first-mentioned pair of contacts and further circuit means operatively connecting said additional contact with said feed means for decoupling same from said drive means upon operation of said additional contact by said drawing-die means upon displacement thereof along said guide pair.
  • said fluid-responsive means includes at least one hydraulic power cylinder mounted upon said drawing-die means and a double-acting piston reciproca'ble in said cylinder and connected with said clamping means, said apparatus further comprising control means for said fluid-responsive means, said control means including a master cylinder stationarily mounted upon said support means, flexible conduit means interconnecting said master cylinder and said power cylinder, a further piston movable in said master cylinder for supplying fluid to said power cylinder through said flexible conduit means, and a mechanism for displacing said further piston.
  • said mechanism includes a source of motive power, a transmission adapted to interconnect said source with said further piston, and electrically operable clutch means in said transmission operable by said contacts for selectively decoupling said source from said further piston and coupling said source therewith.
  • a wire-apparatus for substantially intermittently advancing a wire for further processing while reducing its cross-section comprising:
  • feed means engageable with said wire upon reduction of its cross-section for displacing same in a forward direction
  • drawing-die means movably mounted on said support means for reciprocation along said guide path; clamping means mounted upon said drawing-die means and reciprocable relatively thereto in said direction for releasable entrainment of said wire through said drawing-die means;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
US209658A 1961-07-27 1962-07-13 Wire drawing apparatus Expired - Lifetime US3290916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP27612A DE1156744B (de) 1961-07-27 1961-07-27 Einer Drahtverarbeitungseinrichtung, z.B. einer Kaltformpresse, vorgeordnete Zieheinrichtung

Publications (1)

Publication Number Publication Date
US3290916A true US3290916A (en) 1966-12-13

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ID=7370912

Family Applications (1)

Application Number Title Priority Date Filing Date
US209658A Expired - Lifetime US3290916A (en) 1961-07-27 1962-07-13 Wire drawing apparatus

Country Status (6)

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US (1) US3290916A (xx)
BE (1) BE619972A (xx)
CH (1) CH406106A (xx)
DE (1) DE1156744B (xx)
GB (1) GB954727A (xx)
NL (2) NL280083A (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1602870B1 (de) * 1967-02-10 1970-05-21 Hans Lindemann Schaelmaschine
US3599468A (en) * 1969-04-17 1971-08-17 Fastener Eng Inc Wire drawing and feeding apparatus
US3654784A (en) * 1969-12-15 1972-04-11 Fastener Eng Inc Wire drawing and feeding apparatus
US3672200A (en) * 1969-12-24 1972-06-27 Aikoku Kogyo Kk Machine tool
US3688545A (en) * 1970-03-20 1972-09-05 Ajax Mfg Co Wire-working apparatus
US4291565A (en) * 1979-08-22 1981-09-29 Asa Enterprises, Inc. Wire drawing device
US4606212A (en) * 1984-04-16 1986-08-19 Sanwa Kokan Co., Ltd. Device for cold drawing seamless metal tubes having upset portions on both ends
CN106975668A (zh) * 2017-05-18 2017-07-25 嘉兴市利富通新材料科技有限公司 一种直拉机无齿痕自动推头装置
CN112238202A (zh) * 2020-10-09 2021-01-19 江苏拓来电子有限公司 一种电器电线生产用剪裁装置
EP3815805A1 (en) * 2019-10-31 2021-05-05 Tecnopress s.r.l. Continuous linear drawing device for horizontal automatic cold forging press
IT201900024412A1 (it) * 2019-12-18 2021-06-18 Tecnopress S R L Dispositivo per la realizzazione di un processo interconnesso di trascinamento e trafilatura lineare continua di un filo metallico in matassa, integrato con una pressa automatica orizzontale che produce fastener ed altri particolari metallici con la tecnica dello stampaggio a freddo

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248601B (de) * 1964-11-17 1967-08-31 Schumag Schumacher Metallwerke Einer Draht oder Stangen verarbeitenden Einrichtung vorgeordnete Reduzier- und Vorzieheinrichtung
US4685186A (en) * 1982-06-28 1987-08-11 Westinghouse Electric Corp. Method of inserting a sleeve within a heat exchanger tube
DE19637686C1 (de) * 1996-09-06 1998-01-29 Mannesmann Ag Vorrichtung und Arbeitsverfahren zum Einfädeln von Rohren oder Stangen in ein Ziehaggregat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560705A (en) * 1919-06-27 1925-11-10 Taylorwharton Iron And Steel C Means for controlling fluid-operated reciprocating machinery
US2018211A (en) * 1934-11-21 1935-10-22 Charles L Wasmer Wire drawing machine
US2255097A (en) * 1938-06-27 1941-09-09 B W Mfg Company Combined feeding and cold drawing mechanism for heading machines and the like
US2597623A (en) * 1947-10-31 1952-05-20 Hurd Lock And Mfg Company Apparatus for manufacturing taper tubing
US2633233A (en) * 1947-09-09 1953-03-31 Nat Steel Corp Drawing machine
US3195336A (en) * 1960-09-29 1965-07-20 Th Calow & Co Clamping and straightening devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE243997C (xx) *
DE899305C (de) * 1938-07-26 1953-12-10 Nat Machinery Co Reduziervorrichtung fuer Kopfstauchpressen od. dgl.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560705A (en) * 1919-06-27 1925-11-10 Taylorwharton Iron And Steel C Means for controlling fluid-operated reciprocating machinery
US2018211A (en) * 1934-11-21 1935-10-22 Charles L Wasmer Wire drawing machine
US2255097A (en) * 1938-06-27 1941-09-09 B W Mfg Company Combined feeding and cold drawing mechanism for heading machines and the like
US2633233A (en) * 1947-09-09 1953-03-31 Nat Steel Corp Drawing machine
US2597623A (en) * 1947-10-31 1952-05-20 Hurd Lock And Mfg Company Apparatus for manufacturing taper tubing
US3195336A (en) * 1960-09-29 1965-07-20 Th Calow & Co Clamping and straightening devices

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1602870B1 (de) * 1967-02-10 1970-05-21 Hans Lindemann Schaelmaschine
US3599468A (en) * 1969-04-17 1971-08-17 Fastener Eng Inc Wire drawing and feeding apparatus
US3654784A (en) * 1969-12-15 1972-04-11 Fastener Eng Inc Wire drawing and feeding apparatus
US3672200A (en) * 1969-12-24 1972-06-27 Aikoku Kogyo Kk Machine tool
US3688545A (en) * 1970-03-20 1972-09-05 Ajax Mfg Co Wire-working apparatus
US4291565A (en) * 1979-08-22 1981-09-29 Asa Enterprises, Inc. Wire drawing device
US4606212A (en) * 1984-04-16 1986-08-19 Sanwa Kokan Co., Ltd. Device for cold drawing seamless metal tubes having upset portions on both ends
CN106975668A (zh) * 2017-05-18 2017-07-25 嘉兴市利富通新材料科技有限公司 一种直拉机无齿痕自动推头装置
EP3815805A1 (en) * 2019-10-31 2021-05-05 Tecnopress s.r.l. Continuous linear drawing device for horizontal automatic cold forging press
IT201900024412A1 (it) * 2019-12-18 2021-06-18 Tecnopress S R L Dispositivo per la realizzazione di un processo interconnesso di trascinamento e trafilatura lineare continua di un filo metallico in matassa, integrato con una pressa automatica orizzontale che produce fastener ed altri particolari metallici con la tecnica dello stampaggio a freddo
CN112238202A (zh) * 2020-10-09 2021-01-19 江苏拓来电子有限公司 一种电器电线生产用剪裁装置

Also Published As

Publication number Publication date
CH406106A (de) 1966-01-31
NL135623C (xx)
GB954727A (en) 1964-04-08
NL280083A (xx)
DE1156744B (de) 1963-11-07
BE619972A (fr) 1962-11-05

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