US3362035A - Nail-making machine - Google Patents

Nail-making machine Download PDF

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Publication number
US3362035A
US3362035A US466195A US46619565A US3362035A US 3362035 A US3362035 A US 3362035A US 466195 A US466195 A US 466195A US 46619565 A US46619565 A US 46619565A US 3362035 A US3362035 A US 3362035A
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United States
Prior art keywords
nail
wire
reciprocating member
machine
limbs
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 - Lifetime
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US466195A
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English (en)
Inventor
Faulkner Douglas Stewart
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.)
Rylands Brothers Ltd
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Rylands Brothers Ltd
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/32—Feeding material to be worked to nail or pin making machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/16—Pointing; with or without cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/18—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16
    • B21G3/20—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16 from wire of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/18—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16
    • B21G3/26—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16 by cutting from strip or sheet material

Definitions

  • This invention is for improvements in or relating to machines (hereinafter referred to as a nail-making machine) for the manufacture of headed articles such as nails, rivets and the like, of the kind (hereinafter referred to as the kind specified) in which an approximate nail, rivet or like length is cut from wire or like stock by a cutter means and is held by gripper means for the formation of a head on said out length, the cutter means and gripper means being operated by a reciprocating member which may be similar, in some respects, to the reciprocating member of a power press.
  • the present invention is generally related to a nailmaking machine such as is described in said United States Patent 2,696,013 and said British Patent No. 715,433 (the disclosures of which are hereby incorporated herein by reference) but having an improved reciprocating mechanism. More specifically, it is an object of the present invention to provide a nail-making machine of the kind specified with an improved reciprocating mechanism so as to:
  • amachine of the kind specified having a reciprocating member for operating the cutting and gripping means wherein a driving shaft for said reciprocating member passes through said reciprocating member.
  • the mechanism for operating the cutter means and gripper means comprises a frame having guides for the reciprocating member and a bearing or bearings for the driving shaft, said bearing or bearings passing through an elongated slot or slots in the reciprocating member.
  • the reciprocating member is arranged to reciprocate in a vertical or substantially vertical plane and comprises two limbs mounted in vertical guides. At their lower parts these limbs are connected together by a shaft coupled by means of a connecting rod to a crank or eccentric on the driving shaft so that rotation of said driving shaft serves to reciprocate the reciprocating member. At its upper part the latter is provided with bearings for toggle links which operate the cutter and gripper means.
  • the length of the stroke of the reciprocating member is made relatively or very short (less than the length of the stroke of the feed) so as to provide a high production rate.
  • FIGURE 1 is a semi-diagrammatic general arrangement drawing showing the machine in side elevation
  • FIG. 2 shows in side elevation the straightening roller unit of the machine
  • FIG. 3 is a plan view of FIG. 2;
  • FIG. 4 is a fragmentary side elevation of a feed carriage arrangement for feeding the wire, from which the nails or rivets are made, to the nail-making part proper of the machine;
  • FIG. 5 is a cross-section on the line V-V of FIG. 4;
  • FIG. 6 is a sectional view on the line VI-VI of FIG. 7, and shows in detail the press-like operating mechanism for the nail-making machine;
  • FIG. 7 is a side elevation of FIG. 6;
  • FIG. 8 is a sectional view showing in greater detail a part of the actual nail-making mechanism of the machine.
  • FIG. 8a is a horizontal sectional view illustrating the cooperative relationship between the cutting and pointing tools, the nail grippers, centering and stripper guide and header;
  • FIG. 9 is a sectional view on the line IX-IX of FIG. 10 showing the nail-making mechanism with the front plate 94 and center bridging piece 61 removed;
  • FIG. 10 is a plan view of FIG. 8;
  • FIG. 11 is a diagrammatic plan view of the nail-making part of the machine and shows in particular the cutter and gripper mechanism;
  • FIGS. 12, 13 and 14 show the cycle of operation of the cutting and pointing means (with the cutting tools having been omitted for purposes of illustration);
  • FIGS. 15, 16 and 17 show the cycle of operation of the gripper means (with the gripper dies having been omitted for purposes of illustration).
  • the machine comprises a frame 10 on the upper part on which there is mounted, for successive operation on the wire stock to be made into nails, a wire straightening mechanism 11, a wire feeding mechanism 12 and the nailmaking mechanism proper 13.
  • the wire straightening mechanism (see FIGURES 2 and 3) comprises lower grooved rollers 14 mounted for rotation about horizontal axes in bearing blocks 16.
  • the bearing blocks 16 are adjustable vertically by means of screw devices 17.
  • upper grooved rollers 18 adapted to rotate about horizontal axles 19 mounted in a vertically adjustable carriage 20.
  • the rollers 14 and 18 are urged apart by means of springs 21 located between the carriage and the block 22 in which the bearing blocks 16 are mounted.
  • the rollers 14 and 18 are brought into operative relationship, for straightening the wire in the vertical plane, by means of a cam or eccentric device 23 having an operating handle 24.
  • the cam device 23 acts against the spring devices 21.
  • the straightening mechanism also comprises grooved rollers 25 mounted for rotation about vertical axles 26.
  • the axles 26 are mounted in slidable bearing blocks 27 which can be adjusted horizontally by means of screw devices 2S.
  • the bearing blocks 27 are mounted in a main bearing block 29.
  • Associated with the grooved rollers 25 are further grooved rollers 30 mounted for rotation on vertical axles 31.
  • the axles 31 are mounted in a horizontally slidable carriage 32.
  • Springs 3 3 are located between the main bearing block 29 and the carriage 32 so as to urge the rollers 30 away from the rollers 25.
  • the rollers 25 and 30 are brought into operative relationship against the action of the springs 33 by means of a cam or eccentric 34 having an operating handle 35.
  • the handles 24 and 35 are first operated so as to separate the rollers 18 from the rollers 14 and the rollers 30 from the rollers 25.
  • the wire can then readily be passed between the straightening rollers.
  • the handles 24 and 35 are operated so as to bring the rollers into operative relationship.
  • the rollers then operate on the wire to straighten it both in the vertical and horizontal plane as it is fed by the feeding mechanism 12 to the nail-making mechanism proper 13. It will be appreciated that the wire stock will generally come from a coil of wire and it is very necessary, therefore, to straighten it before it is fed to the nailmaking mechanism proper.
  • the wire-feeding mechanism (see FIGURES 4 and 5) comprises feed rollers 36 mounted in a carriage 37 adapted to be reciprocated horizontally on guide tubes 38.
  • the guide tubes 38 are mounted in a bracket member 39 (see FIGURE 1) secured to the upper part of the main frame 10. Reciprocation of the carriage '37 and feed rollers '36 is effected by means of arms 40 mounted on a shaft 41 adapted to be rocked from a crank and crank disc mechanism 42, 43 through a connecting rod 44 and an arm 45 fixed to one end of the rock shaft 41.
  • the crank disc 43 is mounted for rotation on the main driving shaft 5 of the machine.
  • the wire is led between the feed rollers 36 and the arrangement is such that when the feed carriage 37 moves to the right (as viewed in FIG. 4) it makes an idle stroke with respect to the wire, Whereas when it moves in the opposite direction the rollers 36 grip the wire by means of a taper grip action and feed an appropriate length of it to the nail-making mechanism proper 13 in synchronization with the operation of the latter.
  • a further set of rollers is provided in a stationary unit 37a.
  • This unit is somewhat similar to the unit 36, 37 in that the rollers in both are arranged in their respective carriages in the same manner. Because the unit 36, 37 is movable and unit 37a is stationary, however, the effective Wire gripping action of unit 36, '37 will be opposite to that of unit 37a.
  • unit 37a will effectively be idle or passive with respect to the wire; when feed carriage 37 moves in the opposite or non-feed direction, however, the rollers in unit 37a will grip the wire to permit the rollers 36 to break their grip on the wire. The result will be that feed carriage 37 will return to the extreme right of the mechanism shown in FIG. 4
  • the wire feeding mechanism also incorporates guides for the wire.
  • the nail-making mechanism proper 13 comprises a fixed housing 90 mounted on frame 10 which includes a transverse guideway 47 (see FIGURE 10) and parallel therewith a further transverse guideway 48.
  • Mounted for reciprocatory movement in a horizontal plane in the guideway 47 are opposed tool holders 49 for the cutter tools 50 (see FIGURES 8a and 11) which cut off the wire stock and point the nail N.
  • Slidably positioned in the guideway 48 are oppositely disposed tool holders 51 which carry the nail grippers 52 (see FIG. 11).
  • the tool holders 49 and 51 are reciprocated in the guideways 47 and 48 through toggle links 53 and 54, respectively.
  • the toggle links are actuated by a press-like operating mechanism. This press-like operating mechanism is shown more particularly in FIGS.
  • the frame part 55 incorporates vertical guideways in which are slidably located the downwardly extending limbs 58 of the reciprocating member of the mechanism. On the opposite sides the limbs 58 are provided with slides 59 (e.g., slides of V cross-section) which slide in the channelled guideways 60.
  • the two limbs 58 of the reciprocating member which are slotted at 62 and 63 to respectively receive the toggle links 53 and 54, are connected together by bridging pieces 61 (which bridging pieces may, if desired, be formed into a single bridging unit) and have bearings 64 for the shafts 65 and 66 (see FIGURES 11 to 17) which carry the toggle links 53 and 54.
  • the toggle links are connected to the tool holders 49 and 51 by pivot pins 67 and 68 respectively.
  • an eccentric or crank 69 which, through a connecting rod 70 and a shaft 71, imparts rcciprocatory movement, in a vertical plane, to the reciprocating member 58, 61 of the mechanism.
  • the reciprocating member 58, 61 of the nail-making mechanism of the present invention is constructed of a plurality of limbs 58 which are rigidly secured together at their upper ends by a bridge 61 and at their lower ends by means of the shaft 71, member 5 8, 61 is extremely rigid and the life of which at the high speeds of operation which this machine can accomplish will be significantly long.
  • toggle links 53 for operating the cut-off tool holders 49 and the toggle links 54 for operating the gripper tool holders 51 are separately pivotally mounted in the limbs 58 of the reciprocating member by means of the pivot pins 65 and 66.
  • the pivot pins 65 and 66 are not coaxial as can be seen more particularly from FIGURE 11 and FIGURES l4 and 15. This non-alignment of pivot pin axes serves the purpose of causing the cutting and pointing operation to precede the gripping operation.
  • the length B of the toggle links 54 is greater than the length A of the toggle links 53 and said 75 links and the tool holders 49 and 51 and the pivotal con nections 65 and 66 of the parts are arranged, as shown in FIGURES 12 to 16 inclusive, so that a relatively short portion of the stroke of the vertically reciprocating member 58, 61 is utilized for cutting and pointing by the cutters 50 and a relatively longer period is available for the nail-heading operation (hereinafter to be described) during which the shank of the nail is gripped by the grippers 52.
  • the length C of the gripper tool holders 49 can be increased to provide pre-load condition, i.e., a lengthened period during which there is no material motion of the gripper tool holders 51 sufiicient to make them lose their grip on the nail shank.
  • a wire centering stripper guide 92 mounted in a groove 99 in the central housing block 91 of fixed housing 90 is a wire centering stripper guide 92.
  • This guide 92 is positioned between tool holders 49 and 51 and, as shown in ⁇ FIGURE 9, is provided with a bevel 93 on its wire entering side facing the front end plate 94 of the machine to facilitate entry of the wire stock.
  • This guide 92 performs the function which was performed by the wire centering guide means included in the mechanism of United States Patent 2,696,013 and British Patent No.
  • guide 92 also serves another significant purpose. More specifically, when newly made gripper dies having freshly made grooves are utilized, the wire stock will often stick to one of the dies when they separate after the heading operation. If this happens, the finished nail will not be rejected properly from the machine and the next succeeding nail to be formed will be crushed into this nail. Faulty nails will be the inevitable result of this operation.
  • the guide 92 avoids this problem by effectively fixing a limit on the extent of lateral movement which can be made by the finished nail as the gripper dies separate, necessarily resulting in the dislodging of any nail sticking to one of the gripper dies after the heading operation.
  • a flared wire entry guide 97 is threaded into front end plate 94 and secured against removal by lock nut 98.
  • the machine also contains a back plate 100 which is shown specifically in FIGS. 8, 8a and 11.
  • the heading mechanism for the nail ('see FIGURES 1, 8, and 8a) comprises an elongated member 73 having an externally threaded end portion 74 and a header portion 75 whose end face 76 abuts against the wire stock at the proper point during the operation of the nail-making mechanism to form the nail head.
  • the threaded end portion 74 is screwed into a tapped cylindrical receiver 77 to permit the position of the header portion 75 to be longitudinally adjusted relative to the wire stock.
  • the configuration of the head which is formed on the cut wire stock by means of the heading mechanism can be varied by modification of the configuration of the header end face 76.
  • the header 73 is operated by means of a bellcrank lever 78 (see FIGURE 1) pivoted at 79 on a support 88 forming a base portion of the nail-making mechanism 13 and which is integrally secured to main frame 10 of the machine and pivotally attached to the hammer at 80 and to the reciprocating member 58, 61 at 81.
  • the hammer is operated at the appropriate time in synchroniza tion with the operation of the cutters and grippers by the reciprocating member "58, 61 to head the nail.
  • an ejector lever 82 (see FIGURE 8) is pivotally supported on the end plate 94 of the machine at 83.
  • 61 is a spring-loaded catch 84.
  • the spring-loaded catch 84 slides over the inclined face 85 of the lever 82.
  • the catch 84 engages the lever 82 and, as it passes it, rocks the lever so that its end 86 engages the nail and ejects the completed nail into a discharge chute 87.
  • the severed nail length is tightly gripped by grippers 52 at a point adjacent its front end.
  • the grippers 52 will have closed sufiiciently about the Wire stock before the cutting and pointing operation is completed (though not so tightly as to prevent creep of the wire, as above stated) for loosely holding the cut nail to prevent it from dropping out of axial alignment with the gripper grooves before the heading operation.
  • the tightly gripped cut wire stock is then headed at 70 its extreme front end by header 73 and, finally, the thus the making of nails but of rivets and other formed and beaded shapes.
  • a machine for making nails comprising a fixed mem ber; a reciprocating member reciprocally mounted with respect to said fixed member and having an opening. of predetermined dimension in the direction of reciprocation; a drive shaft rotatably mounted with respect to said fixed member and passing through said opening in said reciprocating member; said predetermined dimension of the opening being suflicient to clear said drive shaft as said reciprocating member is reciprocated; said drive shaft having an eccentric; means connecting said eccentric to said reciprocating member so as to cause said reciprocating member to reciprocate upon rotation of said drive shaft within said opening in said reciprocating member; cutter means for cutting wire stock to be formed into a nail; gripper means for gripping said wire stock during the nail-making operation; and linkage means connecting said reciprocating member to said cutter means and said gripper means to actuate the latter two means upon reciprocation of said reciprocating member.
  • a machine as defined in claim 1 additionally including header means for forming the lead end of said wire stock while said wire stock is gripped securely by said gripper means; and means actuated by movement of said reciprocating member for operating said header means in synchronization with the operation of said cutter means and said gripper means.
  • a machine for making nails comprising a fixed member; a reciprocating member reciprocally mounted with respect to said fixed member; said reciprocating member being formed of at least two limbs which are spaced from but securely connected to one another; said limbs being connected to one another near one of their ends with first connecting means; said limbs being connected to one another near the other of their ends with second connecting means; a drive shaft mounted for rotation relative to said fixed member and passing through said reciprocating member; third means connecting said drive shaft to one of said first and second connecting means so that on rotation of said drive shaft, said reciprocating member is caused to reciprocate; cutter means for cutting wire stock to be formed into a nail; gripper means for gripping said wire stock during the nail-making operation; and means connecting said reciprocating member to said cutter means and said gripper means to actuate the latter two means upon reciprocation of said reciprocating member.
  • a machine as defined in claim 4 wherein said fixed member is provided with guideway means; said limbs of said reciprocating member being slidably supported for reciprocatory movement in said guideway means.
  • a nail-making machine of the type having a fixed frame including a housing portion, cutter means slidably carried by said housing portion, gripper means slidably carried by said housing portion, a reciprocating member, and linkage means connecting said reciprocating member to said cutter means and said gripper means to actuate the latter two means upon reciprocation of said reciprocating member, the improvement comprising:
  • said reciprocating member including a pair of limbs straddling said housing portion and having openings therein through which said drive shaft passes and which are dimensioned in the direction of reciprocation of said reciprocating member to clear said drive shaft,
  • said drive shaft having an eccentric between said limbs
  • a nail-making machine comprising, in combination a fixed frame having a pair of spaced parts
  • a reciprocating member having a pair of limbs slidably engaged with respective ones of said frame parts and straddling said housing
  • gripper means slidably carried by said housing
  • a nail-making machine wherein said last mentioned means is a connecting rod journaled on said eccentric, one of said means rigidly interconnecting opposite ends of said limbs being a shaft, and said connecting rod being pivotally connected to said shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Wire Processing (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US466195A 1964-06-25 1965-06-23 Nail-making machine Expired - Lifetime US3362035A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26259/64A GB1088595A (en) 1964-06-25 1964-06-25 Improvements in or relating to machines for the manufacture of nails and the like

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US3362035A true US3362035A (en) 1968-01-09

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US466195A Expired - Lifetime US3362035A (en) 1964-06-25 1965-06-23 Nail-making machine

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US (1) US3362035A (pt)
AT (1) AT264995B (pt)
BE (1) BE665623A (pt)
CH (1) CH427714A (pt)
ES (1) ES314646A1 (pt)
GB (1) GB1088595A (pt)
IL (1) IL23793A (pt)
LU (1) LU48909A1 (pt)
NL (1) NL6508176A (pt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342215A (en) * 1979-03-05 1982-08-03 United States Steel Corporation Nail machine wire feed mechanism
US5207084A (en) * 1990-05-25 1993-05-04 Shanley And Baker Severing continuous-length wire
CN106363113A (zh) * 2016-11-23 2017-02-01 常州机电职业技术学院 自动制钉机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114160719B (zh) * 2021-12-07 2024-09-13 迁安市衡锐拔丝有限公司 一种制钉机用送丝传动机构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564739A (en) * 1948-12-15 1951-08-21 Dore Dev Co Inc Nail producing die-set for punch presses
US2696013A (en) * 1951-08-09 1954-12-07 David T Theodore Nail producing die-set for punch presses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564739A (en) * 1948-12-15 1951-08-21 Dore Dev Co Inc Nail producing die-set for punch presses
US2696013A (en) * 1951-08-09 1954-12-07 David T Theodore Nail producing die-set for punch presses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342215A (en) * 1979-03-05 1982-08-03 United States Steel Corporation Nail machine wire feed mechanism
US5207084A (en) * 1990-05-25 1993-05-04 Shanley And Baker Severing continuous-length wire
CN106363113A (zh) * 2016-11-23 2017-02-01 常州机电职业技术学院 自动制钉机

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Publication number Publication date
GB1088595A (en) 1967-10-25
AT264995B (de) 1968-09-25
NL6508176A (pt) 1965-12-27
CH427714A (de) 1967-01-15
LU48909A1 (pt) 1965-08-24
ES314646A1 (es) 1966-03-01
IL23793A (en) 1969-11-30
BE665623A (pt) 1965-10-18

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