FR2459694A1 - AUTOMATIC MACHINE FOR CUTTING AND BENDING FROM WIRE - Google Patents

Abstract

THE INVENTION CONCERNS A MACHINE FOR SMALL PARTS SHAPED IN MULTIPLE TIMES WITH A CUTTING PLANT AND A BENDING ASSEMBLY. IN AN AUTOMATIC CUTTING AND BENDING MACHINE THE BENDING UNIT 18 AND THE CUTTING PLANT 16 CAN SLIDE WITH RESPECT TO THE OTHER PARALLEL TO THE DIRECTION OF FEEDING THE PIECES AND ARE PLACED SO THAT THEY CAN BE ADJUSTED TO A WELL-DETERMINED MINIMUM DISTANCE DEPENDING IN EACH CASE ON THE LENGTH OF THE PIECES. APPLICATION TO MANUFACTURING IN THE SAME AUTOMATIC CUTTING AND BENDING MACHINE OF PARTS SMALL AND LARGE, WITH HIGH PRECISION.

Description

The invention relates to an automatic cutting and bending machine for

  small pieces, made from a ribbon or yarn, shaped in a number of times, consisting of an introduction system for the ribbon or yarn product, a cutting installation, and at least one bending unit, which includes a number of

  sliders, arranged all around a central area of

  for the various bending tools, and o there is provided a central drive mechanism for all the bending tools, the cutting installation and the introduction system. The cutting and bending machines of this

  as they are known, present the incon-

  that the bending unit and the installation of

  page form a building unit so that the distance between them can not be adjusted. This distance is large, with respect to the lingor of the small parts to be manufactured, and it results in difficulties to adjust the part with precision, in particular if one has to manufacture

  in the same machine small parts of different types.

  The problem underlying the invention is to improve the automatic cutting and bending machine so as to obtain that the margin of tolerance is reduced regardless of the size of the small parts, and that the correct positioning of each small piece

  in the bending unit is ensured.

  This problem is solved, according to the invention, by the fact that the cutting installation and the bending unit, in order to allow the adjustment of the distance between their centers, to a measure that is dependent on the length of the small parts in their raw state,

  are arranged so as to be able to slide one

  port to the other in the direction which is that of the advance

  tape or wire.

  The invention has the advantage that the cutting station and the bending unit can be brought as close as possible to one another so that there is no gap between them. as little as possible

  the length of the blank, and that it is ensured

  as the raw part, worked in the cutting unit, arrives in a correct position in the bending unit in a minimum number of stages of advancement. For the machining of relatively long, relatively long pieces a relatively greater distance is chosen than for small short pieces, and the distance between centers of the bending unit and

  of the cutting installation is progressively adjusted

  sive such that the cut blank arrives in the bending unit exactly in the position intended to receive the piece. This gives a significant gain in precision and the range of use is extended, because we can produce in the same machine both very small parts that large enough parts, and we have the advantage -which is not the least- that the bending unit can be completely separated from the installation

  in order to be able to modify his equi-

  while the automatic machine works with

  another bending unit that has been modified previously

  This avoids downtime for the machine.

  Other features of the invention include

  in that the bending unit and the cutting unit are interconnected by a telescopic splined shaft, and in that the track on which the cage of the bending unit is slid is arranged in an offset manner, with respect to the cutting installation, in the direction of the axis of its central wheel so that they can be brought into the recovery position. This is either the bending unit that is fixed in a specific position on the base of the machine, the cutting installation being then guided to move relative to the bending unit, or, preferably, the cutting unit combined with the introduction system, which is fixed on the base of the machine, while the bending unit is arranged so as to slide on the base of the machine. In this case, the bending unit can, according to a type of embodiment of the invention, be moved behind the cutting installation, so that it reaches a sufficiently marked recovery position, in order to bring the center of the center wheel of the bending unit as close as possible to the center of the cutting plant; or it can be provided, in the case where the central wheel is laid flat, that the bending unit can be slid under the cage of the cutting plant,

  after removing a false box.

  The invention is described in more detail using the drawings which represent some examples

of realization.

  It shows: - in Figure 1, a schematic representation of a machine to cut and bend, in side view and in plan view - in Figure 2, a schematic representation as to sqaq ue agin2lT uoîTqsod l op ' TV eqoa-eiqnop UT op Oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo on thu.tw. s an eqaodwoo Zl eqouw ep slsseqo to the sgauesa.dai sed.quos to inb a2vaulo ap sli; no sap quuqzod xnuassITnoo-ap eaJquou UT4J @. SZ a veAo oE ee ace aqa aqaQeD '81 e2ui4ulo ep qqiun on a qe '91 9e2dnooDp ap uoieullusul aun 91 uo onpoiqupp aoéxs a tenue Tenbe in s ilgui s sssss; o an eo4oduoo 'I earn2r l elgesaggadae' 0I jae4u-o - iae jadnoogp y enb4euioqne auTgou -l OZ Ànanenuoul alqTj op s8aeod op IsAas el.nod ajOAuS q 'e2udnoogp ep uoillusul, l ap qa ao2, u $ o ap ap Tunlj saueo salt eaoua eaqnpaj eouuslp eun oaAe sTiw 'q eangIj quSAIns' oaaSuI0 le.a dnoogp q enbT toqne auqq el elAa el8' 9g alTj el q qa - 51 sepu.a2 luemea i elai saia.d sep anod nUA Tinb all quse Gsednoogp op uo wluqsu; qo e9iuquIo ap 9q1un aque-gsg uegideJ aquee ee io 'ea.uToD the jadnoap p

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t-696StM -

  full in the position shown in dashes. In the first position the bending unit 18 is at a distance from the cutting plant. In the last position,

  the bending unit was pushed towards the

  more than half its length, the bending unit arriving, thanks to the lateral

  that can be seen in Figure 1 below, behind the installation

  cutting position in a recovery position.

  The relative position of the bending unit 18 with respect to the cutting installation 16 is chosen such that the distance between them is as small as possible; However, it adjusts to the length of the raw parts,

  that is to say how to share the band.

  The automatic machine 10 comprises a central drive mechanism 26, the main shaft 28 driving, via a chain or belt transmission, a side, the eccentric shaft 32 of the installation of pressing and / or cutting 16, and, via

  of a transmission 34 by toothed gears, the system of introduction

  duction 14 of the strip product. The introduction system and the cutting installation are united here in a single building unit. The bending unit 18 is separated from this building unit and is telescopically connected to the main shaft 26 via a splined shaft 36, so that the bending unit is coupled, for its drive, to the main shaft 26, regardless of the different attachment points

from this unit.

  FIG. 2 differs from FIG. 1 in that the bending unit 18 can not slide on a 4-bolt wheel, and thus assists the winding of the windshield by means of a windshield. ad euTea @S 9th @ enbldovseig- eUBD e. 9qaeq.apu-eq el epquse -GOU'BABe p UOT40eilp el 14 elqIjui2d ex? uos ue ale-ueo eno eqios ellao ape ee ze I saarrSI su-ep auoop uoT, 4-P, 4 -uosaadao ul y 4aoddu-sd 'erlawr alle ans o 06 oP 9uano4 qLA2 sz a-LIO Is oauoo oesodstp qsa 811 a2su.uio op gqiun, qI 'Ez selBuIpn4t2uoI seggIssII2 ep awaqsXos el suBp' sIslsito el ans ó.IezOedgp es '94oo uoS ap'% ned $ nb 0t0 seleesiaasuezi s.eI@qSSlI2 op oaiasXs one year gassilnov - zoanod - uobuj ap 09x15 tol'o, Te 811 9uT o op 9-; a,% 'sogusqoui q.uqsaz 9I 0Z a2Bdnoo9p' @p uOIlBOTSUll qo ti uoi4onpolsut ^ p UwasXs ei ro ejeaquTo q qo jadnoogp q auTqoum oUIm el snssap jud anA ua 9T UOiqvAgIg ue quemenbli4uwgloss equesgdacs [earI $ ij uI toImIxBU; qUEuweaAnooaa op uoiqisod eun suBp e, Ip - gse of Giwusl; ui qse eouB9Tstp 'l puLnb a2-eaquio @p gIqqnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn '[j Ll op sq np uoiuoqesg.cda. uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh . uoqlgsod l op aqonus Ul SiGA a9o @ edgp o.zqe -nod qo '@pueq ul op uwou @ uwA, & p UOI'40atp 2w 4 uuomlglIe.oed @ .Fp-q-qsoo' 8u Doai $ olqnop el op uo Doo.lp ul suBp gessIInoo ajoAnod uoSbj op Zl sissuqo el ans ogsodsip soa o2udnoDgp op uolqull2qSu $, IOp $ 0 PI UO; 5 - Dnpoa4utp omgqsXs np 09nqi4suoo uolqonaqsuoo op qqiun, I onb stpuseuatugai.edgs.Iadtnbg, l.i'oAnod op u .Ie 6gaglqaj ejqp Oqlqdoosns sTa elquaudes oouogpjp.zd op 'síojoanoq 4useq, ue' epxl $ gsa X it, nb sivw eoulqo'ew @l ap sssuqv el t696ffl to cut and bend, in which the bending unit 218 is arranged The axis of the central wheel is here vertical.The cutting installation 16 is arranged at a distance above the frame, at the height of the bending unit 218, or placed on a false box 44, Don t height coincides with that of the bending unit -measured in the direction of the axis of its central wheel-, so that after removing the false box bending unit 218 can be moved to enter or out, under the cutting installation 16, in the direction of the double arrow 46, the largest distance between centers of the bending unit and the cutting installation being shown in solid lines in Figure 4, while one has the smallest distance in the position of the bending unit shown in dashes. For this distance the bending unit fits under the cutting installation 16 of about half of its length, taken in the direction of sliding. The drive is again done by a connection by telescopic shaft and a system

  of bevel gears, as shown schematically -

in Figure 4.

  FIG. 5 represents the automatic cutting and bending machine according to FIG. 1, with the bending unit 18 extended to come flush with the construction unit consisting of the introduction system 14

  and the cutting installation 16, without overlap.

  The distance between the axes 48 and 50, shown in dashed lines, of the bending unit and the cutting installation is adjusted exactly to the length of the raw parts 52 obtained on a strip 56 and is here exactly two and a half times the length of the raw parts. If now the machine is to be used for the manufacture of smaller lengths of blanks 54, the bending unit 18 is moved to the right on the chassis according to FIG. 6, and this is exactly the case until the distance axes 48 and 50 of the bending unit and the installation

  to a measure which is in correlation with

  exactly with the length of the raw parts 54 of the strip. In the embodiment of FIG. 6, two and a half times the length of the

rough pieces.

  The great advantage that gives the possibility

  slide the bending unit in relation to the installation

  The cutting section is that the smaller and larger parts can be produced in the same machine, but each time with a minimum number of successive phases, so that the dimensions of the additional chain links remain as small as possible to ensure a good transmission of the raw parts in the bending unit. which improves accuracy

and avoid scraps.

  Different variants come within the scope of the invention. If in the exemplary embodiment it is not

  represented in each case that a bending unit respec-

  18, 118, 218, it goes without saying that several bending units of the same type can be arranged one behind the other. Also the automatic cutting and bending machine is not exclusively composed of an introduction system, a cutting installation and a bending unit; much more we can insert other

9 '2459694

  processing units, such as welding installations, drilling tools, milling machines and plastic injectors for coating the blanks. The machine is not limited, moreover, to the use of a strip product, but it can be fed by a series of

  separate rough pieces touching each other.

Claims (3)

CLAIMS / Automatic machine for cutting and bending, for small parts from a ribbon or wire, consisting of an introduction system for the product strip or wire of a cutting installation and at least one bending unit, which comprises a number of sliders arranged all around a central machining area, for the various bending tools, and o there is provided a central drive mechanism for all the tools; bending, the cutting installation and the introduction system, characterized in that the cutting installation 16 and the bending unit 18, 118, 218, to allow the adjustment of the distance between their hangers 48, 50, to a degree which is dependent on the length of the small parts, in their raw state, are arranged so as to be slidable relative to each other in the direction which is that of the advancement of the product in ribbon or yarn 56. / Machin automatic cutting and bending according to claim 1, characterized in that the bending unit 18, 118, 218 and the cutting unit 16 are interconnected by means of a shaft fluted 26, 36 telescopic. Automatic cutting and bending machine according to claim 2, because it is possible in that the track on which the cage of the bending unit 18, 118, 218 slides is arranged offset from the cutting plant 16, in the direction of the axis of its central wheel 20 so that it can be brought into the overlap position. 12459694 4 / Automatic cutting and bending machine according to claim 3, characterized in that the bending unit 18 can be slidably displaced behind the cutting device 16.   50 / Automatic cutting and bending machine according to claim 3, characterized in that the bending unit 218 can be slidably inserted under the cage of the cutting installation 16, the case   appropriate after removal of a false box 44.   60 / Automatic cutting and bending machine,   according to any one of claims 1 to 5   In isolation, the cutting installation 16 forms with the insertion system 14 a construction unit which remains stationary or can slide. integrally.   7 / Automatic cutting and bending machine,   according to any one of claims 1 to 6   In isolation, the bending unit 18, 118, 218 can be separated, as a whole, from the machine frame 12 or provided with a base which   it is clean and away from it.