DE3135377A1 - AUTOMATIC MACHINE FOR CUTTING A CHAIN, MOUNTING THE STAMPED LINK AND WELDING THE END LINKS OF TRIM CHAINS - Google Patents

Description

3-135-J77 i

Applicant;

CERA'lü Silverio Via Lugana n.8 MUSSOLECTS (Vicenza) Italy

PETTEMJZZO Gianni Biron di Sotto VICENZA
Italy

Stuttgart, September 4th, 1981 P 4-095

Representative:

Kohler-Schwindling-Späth Patent attorneys Hohentwielstraße 7000 Stuttgart 1

AUTOMATIC HASGHIME TO THE SCHEEIDEif A CHAIN, FOR ASSEMBLING THE STAMPED LINK AND FOR WELDING THE END LINKS OF DECORATIVE CHAINS

At the moment the assembly of a stamped link and the Welding of the end links on decorative chains such as necklaces, bracelets and the like done exclusively through work, which are carried out entirely by hand, with a considerable amount of it Expenditure of time and manpower.

The main purpose of the present invention is therefore to produce a machine with which it is possible to carry out the cutting of the chain, the assembly of the stamped link and the welding of the end rings on decorative chains in a completely mechanical and automatic manner, and with which it is therefore still possible to get a significant saving in time and manpower. These and other purposes are all achieved by the machine in question for cutting the chain, assembling the stamped link and welding the end links to decorative chains, characterized in that it includes: - J A first movable tong for extracting a single one yesterday - i pelten limb from a container and for forwarding the same '

to the end of a spiral passed through a first spiral device is made from a continuous metal wire; one first cutting device for said spiral, which is used for:

Separation of a single turn is used, which is the end link;

forms, this severed turn with said I.

stamped link connects; - a second movable tong *

for removing the associated with said stamped link gont.inn'tQri I'ikJcjIUkJusS ", wolml dlu φ-η · ιηηΙο / wnHu bew-.x] -liehe Forceps are provided to remove said terminal member, i.e., mil;

the said stamped link is connected to a subsequent Transport work area; - a movable one Slide provided with a straight forward and backward movement in relation to the said work area Is wherein said movable carriage is capable of, with said forward movement, a first end of said Bring decorative chain into the work area mentioned and then to run back with the said backward movement, namely by a length that is the predetermined length of the said decorative chain, said first end of said decorative chain being fixed to said second during the return movement of said movable carriage movable pliers remains; - a first welding torch accordingly at said work area, said first welding torch for fastening said and with dtMii qenannfen stamped link connected end link on the said first end is used for said decorative chain; - a couple movable parallel to each other and transversely in relation to said forward and backward movement of said movable carriage Gripping pliers, this pair of gripping pliers is intended for this purpose is to remove the said decorative chain when the said movable carriage is in a completely retreated Pos if ion is located; - a second cutter nearby of said movable carriage in fully retracted position, said second cutting device is provided, the said decorative chain in place of a

cut through the second end; a third movable tong for removing an end ring from a second spiral device and transporting said end ring to said second end of said decorative chain; a second welding torch in the vicinity of said second end of said decorative chain, said second welding torch serving to attach said end ring to said second end of said decorative chain. Further characteristics and Vorteile.der present invention will become apparent from i \ he nachstehendem [3IMKhH- ¹ IbUrIg uinor early realization manner presents the ruin nls example and shown in the accompanying non-limiting drawings, in which

- Fig. 1 is a schematic representation of the whole in axonometry shows the main parts of the machine in question;

- Fig. 2 shows the schematic representation from above and in three

various operating positions of the first moveable Pliers, which a stamped limb from the corresponding vibrating container to hook os into the end link, exiting the first scroll device;

- Fig. 3 shows schematically the removal process of the end link

a second movable tong and the first cutting device;

- Fig. 4 shows schematically the Schwel ssvorejanq of the end link

the first end of the decorative chain, ill © of the movable one Sledge was brought;

- Fig. 5 shows schematically the from which it has run back completely Position of the movable slides pulled out decorative chain and the second cutting device;

- Fig. 6 shows a schematic of the decorative chain that is

sens from the end ring on the second end of the decorative chain is removed even by the pair of grippers. With particular reference to Figures 1 and 2 is with 1 denotes a movable arm which is rotatable on a horizontal plane and has a first tong 2 at its end, which is used for gripping a stamped member 3 from a vibrating container 4 known per se in order to attach it to a first spiral device of the well-known type 5, from which a final link 6 emerges (in a spiral), which is connected to the stamped Links 3 connects.

Referring to Figures 1 and 3, 21 becomes a first cutting device referred to, which is provided with knives 19 and 20, which the end link 6 from the metal spiral the first spiral device 5 separates. A second movable one Zango 18, which is rotatable on a vertical plane, removes the end link 6 connected to the stamped link 3 and conveys it duis, by arranging itself horizontally, to an anüchliosonde Working area (Fig. 1 and 4) in which the endgliud 6 with a harvested end 22 of a decorative chain 7 (of indefinite Length and coming from a reel that serves as a magazine and is not shown in the figures), which is from a

¹ ^ i iy forceps 8 is held on a movable slide 9, in
';'' Is brought into contact with a first welding torch,

* '10 is made possible to weld the end link 6 to the chain 7 ^;

■ sen. The movable carriage 9, which is on straight horizontal
· ,; Guides 23 is mounted, is able to perform forwards and backwards movements in relation to the work area, the
_n correspond to the predetermined length of the decorative chain 7.

After performing the welding process between the end link 6 and; ^;

■ "".; 7 of the chain 7, the movable carriage 9 runs a predetermined- / '-v .;' te length back to the release of a piece of the chain 7 to
; Allow -5, which at its first end 22 of the second ^loading:

• t:

; _i; movable pliers 18 is held. ;

^a '". Referring to Figures 1, 5 and 6 (after the fr-

it - - ι "

... Moving the 5chlitten) a pair of gripping tongs 11 and 12, the ^;

'^ !; : ψ ■ / parallel to each other and transversely in relation to the straight load .-

,, V 'movement of the movable carriage 9 forward and backward ^loading:;

are movable, the piece of chain 7 that is between the two- |

· ■ th movable pliers 18 and the movable slide 9 are located

det. After the end of the gripping process on the part of the gripping |

pliers 11 and 12, the movable pliers 18 return to their vertical position |:

1 <ale position and lets go of the first end 22 of the chain 7, while at the same time a second with knives 13 and H
provided cutting device 24 separates the chain 7 close to the moving back moving slide 9 and thereby a
second end 21 (Fig. 6) of the chain 7 is generated. The cut piece of the chain 7 remains between the gripping tongs 11 and 12

• j (Fig. 6) stretched, which goes back to its starting position,: t ..- ^

j while a third movable tong 15, which is on a vertical * ν ^:

len level (Fig. 1) is rotatable, after removing an end ring: "'; / | fc

16 from a second spiral device 26 (similar to the he ^ -th \ · '/ if ^

Spiral device 5) with separation by a third cutting ■, M »£

device 27, this ferrule 16 attaches the second end 25 of the J ^ ■ et- / fp te. 7 A second smoldering burner 17, which is located on the

Position of the second end 25 of the chain 7, the. '* | Vj

Welding the end ring 16 to the chain 7. / ^ ^! . * _iV

The transverse backward movement of the pair of grippers ft. " . ^ Yf

and 12 causes the length of the chain 7 to be _{removed from the loading}

trajectory of the movable carriage 9, so that the welding ■ 'V, -;

of the end ring 16 can be made while the moves I ^. . . ί.>/;

before carriage 9 moves again towards the second tong 18; ; _; ;

which in the meantime a new end link 6 with the entsprer. % "= ,: £

corresponding stamped link 3 has taken to a new ar- ^; '. Ti

to begin the work cycle. '. 'S _.: 4v _;

Of course, the machine is here only in its essential aspects. . _a 'drive parts and in the drawings attached to I only

shown schematically, with the different constructive?: ί

Aspects (especially the different and for the automatism i; .-. · "..: '

parts of the work) were not taken into account, \ -. " but which can be carried out in different ways,

but without leaving the scope of protection of the present invention -; ,.

to go out. '■' ■. ■■ - '; ■: *:

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Claims (1)

PATENTA NSPRÜCHE J) J Automatic machine for cutting a chain, for assembling the stamped link and for welding the end links of decorative chains, characterized in that it contains: - A first movable gripper (2) for removing a single stamped chain link (3 ) from a container (4) and for conveying the limb itself to the end of a spiral which is formed in a first spiral device (5) from a continuous metal wire; - a first cutter (21) of said spiral for severing a single turn forming an end link (6), said severed coil joining with said stamped link (3); - a second movable tong (18) for extracting the end link (6) connected to said stamped link (3), said second movable tong (18) being intended to said end link (6) connected to the stamped link (3), in ν * 2 " * V to promote a relevant work area; - a movable one Carriage (9) provided with a straight forward and backward movement in relation to said working area said movable carriage (9) being able to move a first end (22) with said forward movement the said decorative chain (7) in the said work area bring and look at by the said backward movement backward by a length equal to that specified Length of said decorative chain (7), said first end (22) of said decorative chain (7) being firmly attached during the backward movement of said movable carriage (9) said second movable tong (18) remains; - a first welding torch (10) in the corresponding position to the called work area, this first welding torch (10) for securing said end link (6) connected to said stamped link (3) to said end member The first end (22) of said decorative chain (7) is used; - a pair of gripping tongs (11) and (12) which are parallel to each other and movable transversely in relation to said straight forward and backward movement of said movable carriage (9) are, said pair of gripping tongs (11) and (12) being provided for removing said decorative chain (7) when said movable carriage (9) in completely returned Position is located; - a second cutting device (24) in the vicinity of said movable carriage (9) in a completely retracted position, said cutting ft ti * * I * * ■ Λ device (24) for cutting said / iorkoito (/) is provided in place of a second end (25); one third movable tong (15) for removing one end ring (16) from a second spiral device (26) and for forwarding said end ring (16) to said second one End (25) of said decorative chain (7); - A second welding torch (17) correspondingly in the position of said one second end (25) of said decorative chain (7), said second welding torch (17) for fastening said End ring (16) at said second end (25) of said decorative chain (7) is used.