FR2508506A1 - INSPECTION AND STRETCHING MACHINE WITH ATTACHING ARTICLES SUCH AS TIGHTS AND THE LIKE - Google Patents

Abstract

A CARROUSEL AND ARM 202 STRUCTURE CYCLICALLY MOVES A SERIES OF PAIRS OF DRAWING SHAPES 82 BETWEEN AN INSERTION STATION AND AN EXTRACTION STATION. AT THE INSERTION STATION, WE CAN PROVIDE CARRIAGE MEANS 57 THAT CAN BE RAISED AND LOWERED, ON THE SAID MEANS WITH CARRIAGE, 70 ARMS SWINGING BETWEEN AN INTERNAL POSITION AND AN EXTERNAL POSITION, WITH THE MOBILE END OF THE SAID APPENDIX 72A ARMS EDGE OF THE BELT OF THE ARTICLE, AND SUITABLE TO SPREAD THEM DURING THE MOVEMENT UNTIL THE INTERNAL POSITION IN WHICH THE SAID APPENDICES HAVE THE ARTICLE ABOVE THE PAIR OF SHAPES 82 WHICH IS IN THE INSERTION POSITION.

Description

inspection and drawing flachine with articulating attachment

  keys such as tights and the like.

  The present invention relates to a carousel structure which passes a series of forms of stretching cyclically from an insertion station to an extraction station, a device

  provided in the insertion station comprising means for each

  riot (or equivalent) which can be raised and lowered, arranged on the sides of an inspection and insertion station for articles, on said carriage means, swing arms

  between an internal position and an external position, at the

  movable mites of these arms, appendages capable of grasping the edge of the belt of the article and capable of spreading it during movement to the internal position in which said appendages present the article above the pair shapes that are in the insertion position, and

  means for controlling arm oscillations and lowering

  carriage means for insertion of the article

on the forms.

  The invention therefore relates to an apparatus intended for handling and treating articles of the stockings or tights type which limits operator intervention as much as possible, and which makes it possible to carry out checks. These aims and advantages, and to others will become apparent to those skilled in the art at the

reading of the following text.

  A machine of this kind, intended for insertion and

  stretching with fixing of items such as stockings or collars

  lants, includes a carousel structure comprising a series of pairs of stretching shapes, intended to be moved

  cyclically between an insertion station and an extraction station

  tion -According to the invention, there is provided in the insertion station an assembly comprising carriage means (or equivalent) which can be raised and lowered, which are arranged on the sides of an inspection station and insertion of articles, arms mounted on said carriage means and oscillating between an internal position and an external position, appendages provided at the movable ends of said arms and capable of grasping the edge of the belt of the article, and capable of spreading it

  during movement to the internal position in the

  which said appendices present the article on the pair of forms located at the insertion station, and means for controlling the oscillations of the arms and the lowering of said carriage means for the insertion of the article on the forms, using auxiliary means acting centrally

  between the shapes and along the outer edges of the shapes.

  We can provide on each side of the insertion station a

  pair of arms with double articulation links in parallel

  articulated logram, provided with offset appendages which, according to a position of the arms, are side by side, and in the opposite position, are distant from each other Said appendages can be provided with extensions oriented one towards the other

  for entering the edge of the article.

  The machine can be equipped with a horizontal edge located at the front and above the forms at the insertion station, along which the article slides during transfer, in

  view of accompanying it during insertion on the forms.

  It is also possible to provide an inspection form arranged opposite the forms in the insertion position, on which the articles are inserted; this form of inspection

  has piping between its-

  which move upward the extensions of the appen-

  dices, to grab the edge of the item and transfer it.

  This form of inspection can be rotated

  around a central vertical axis to allow inspection

  tion on two fronts This form of inspection can also be supported by an articulated frame by means of which it

  can be brought into the exclusion position.

  As a variant, at the insertion station, it is possible to provide a horizontal apparatus provided with pairs of appendages and suitable and assume a position in which the appendages are turned towards the operator who places the edge of the article therein, and a position where the appendages are turned upwards

  so that the edge of the article is driven by the extensions

  swing arm bearings, when they are brought together side by side for the lifting stroke A guide profile can

be combined with the said appendices.

  To activate the carriages, it is possible to provide continuous chains returned by chain wheels to the ends of the

  carriage races, each connected by an articulated arm

  linked to the carriage and the respective chain These articulated arms can be kinematically articulated to the oscillating arms in

  view of the transfer of the article, to order the oscillations-

  tions, at the ends of the carriage races.

  The invention will now be explained in more detail with

  reference to the description which follows and to the attached drawing which

  represents a nonlimiting embodiment of the invention

  tion. In the drawing: Figure 1 is a partial sectional view along line II of Figure 3, Figure 2 is a partial sectional view along line II-II of Figure 1, Figure 3 is a plan view according to line III-III of FIG. 1, FIG. 4 is a sectional view along line IV-IV of FIG. 1, FIG. 5 is a partial sectional view along line VV of FIG. 3,

  Figures 6 and 7 show a view along line VI-

  VII of FIG. 5, showing two positions of the organs used

  to stretch the article on the stretch forms, Figures 8 and 9 are sectional views along lines VIII-VIII and IX-IX of Figure 7, Figure 10 is a sectional view along line XX of Figure 4, Figures 11 and 12 are a sectional view along the line XI-XI of Figure 1, showing the transfer members in two positions, Figures 13, 14 and 15 are a local sectional view along the line XIII-XIII of Figures 1 and 3, according to three successive positions of the members indicated in these figures, Figure 16 is a sectional view along line XVI-XVI of Figures 2 and 3, Figures 17 and 18 show, in two orthogonal views, a central group for maneuvering and selection figures 19, 20, 21 and 22 represent in perspective certain phases in the cycle of inspection and insertion of the article, figures 23, 24 and 25 represent the ends of the forms of stretching, FIGS. 26 and 27 represent an alternative embodiment of the presentation system on of the article, FIGS. 28 and 29 represent an alternative embodiment of the control of the reciprocating movement of the carriages

carrying the insertion arms.

  As a whole, the machine comprises a frame 31 and

  gantries 33, sleepers 35, 36 and 37 and others that support

  therebetween a central structure 39 comprising a motor group 40 disposed above a part 42 rotating step by step and constituting the carousel of a series of pairs of drawing forms, for cyclic transfer by a series of stations A, B, C, D, E, F, G and H, A representing the insertion station and G representing the extraction station, the whole being

  in accordance with the description given below 'The structure 39

  also supports other control and selection means

  for the elimination of defective items.

  In Figures 1 to 9, 11, 12 and 19 to 22 is shown the equi-

  pement of station A intended for the insertion of articles such as tights on the forms where they must undergo the thermal treatment of stabilization, that is to say of stretching At station A can also be carried out the control of the the article in two possible ways, namely by preliminary presentation in a control form, or by insertion directly into the form of heat treatment intended for drawing; in the first case, the control can be carried out directly on the control form which can be moved to two opposite positions around a vertical axis, or else by a back inspection by means of a mirror; in the second

  In this case, the inspection from the back is carried out by means of a mirror.

  At station A, two opposite lateral structures 51 are provided, oriented vertically in the manner of boxes forming vertical guides 53 and 55 intended for carriage means.

  Respective 57 The structures 51 are connected by a frame 59.

  In each structure 51 is provided a chain 120 returned to the ends of the structure by chain wheels 122 and 124 The carriage 57 can be fixedly connected to a strand of the chain 120, the latter being driven in both directions

  for the lift and lowering stroke of the carriage 57.

  As a variant, it is possible to provide intermittent control in the same direction for the chain 120 and support for the carriage 57 alternately by one or the other of the two ascending and descending strands of the chain On each of the carriages 57, two arms 70 are articulated on spaced axes 68, these arms being connected to one another in an articulated manner by two links 72 and 74 The links and arms 70 of each carriage form articulated parallelograms The link 72 comprises an appendage 72 A comprising an angle extension 72 B in a position offset relative to the center line of the rod 74, on the side opposite to the displacement

  of Appendix 72 B from the center line of the appendix

  dice 72 Each of the two articulated systems 68, 70, 72, 74 can assume two positions substantially symmetrical with respect to the midline defined by the pair of axes of the trunnions 68 In one of the two angular positions of the two arms 70, the appendages 72 A, 72 B and 74 A, 74 B are found substantially close to one another insofar as the offsets relative to the center line of the links 72 and 74 subtract, while in the other opposite position and approximately symmetrical , the two appendages 72 A, 72 B and 74 A, 74 B deviate from each other The displacement from a position in which the extensions 72 B and 74 B are brought together to a position in which they are separated is obtained in the upper part of the path of the carriages 67 along the strands of the chain 120; the displacement of the position in which the extensions 72 B, 74 B are separated until that in which said extensions are brought together takes place at the bottom of the reverse course of the

carts 57.

  The position of the operator being that indicated in O in the drawing, there is provided on the frame 51, 59, between the two structures 51 and at an intermediate level, a support 80

  on which a double form of compressed inspection is placed

  nant two forms 82 arranged side by side, each having a pair of external wings 84 having a narrowed portion, to form a channel 86; the channels 86 of the two forms 82 are. oriented vertically and outward relative to the

pair of said shapes 82.

  The two forms 82 can be in a fixed position and co-

  planar in a transverse plane forming the inspection front

  In this case, one can provide at the back of the two forms 82 (that is to say on the opposite side of the operator with respect to the two forms 82) a panel 90 reflecting in the manner of a mirror, adjacent to a frame 92 forming an upper edge 92 A; the panel 90 extends downward beyond this edge and approximately over the height of the form 82, while the frame 92 has its own upper edge 92 A in a position higher than that of the upper ends of the

  82 shapes, while in a backward position

laugh about them.

  The two forms 82 can also be supported as a variant by a device 96 rotating on a vertical axis materialized by a pin 98, so that the operator

  can rotate all of the two shapes 82 and can.

  inspect the opposite sides of an article strung on these two forms, without using the reflective panel 90 An elastic stud restraint system can be provided to define two inspection positions at 1800 relative to one another. Cyclically, a pair of stretching forms 101 comes into position behind the gantry 92, 92 A after each intermittent advance of the platform or of the carousel 202, which will be described in more detail below, supporting a series of pairs of stretching forms 101 By providing for displacement of the

  arm 70 towards positions symmetrical with respect to the

  position, the position of the forms 101 is opposite and at

  equal strength of the shapes 82 with respect to the plane of vertical symmetry parallel and intermediate to the articulations 68 of the two pairs of arms 70 In any case, the arrangement of the shapes 82 and 101 and the control system of the pairs of arms 70 are provided so that these arms are tilted outward from

  the machine, that is to say towards the operator O, these arms present

  both the pairs of extensions 72 B, 74 B side by side and in alignment with the channels 86 of the two forms 82, while

  when the arms 70 are inclined inwards, that is to say

  say towards the carousel of the forms 101, the extensions 72 B, 74 B are separated and are located on the opposite parts of the

plan formed by the forms 101.

  Thanks to the devices described below, the alternating angular displacements of the two pairs of arms 70 are obtained.

  in order to perform the functions which will now be described

  tes At the start of an operation to insert an article M to be inspected and sent to heat treatment on the machine, the operator grasps the edge BM along the line of the waistband of the body of the article or of the pants and inserts it on the two forms 82, bringing the edge BM of the article towards the base of the two forms 82 and therefore in correspondence of the wings 84 and the channels 86; the GM legs of the article are therefore adjusted to the individual shapes 82 and simultaneously inspected during this operation The inspection can be carried out directly on the anterior part of the shapes 82 and indirectly through the image reflected by the mirror 90 as regards relates to the rear bottom of the forms 82 As a variant, the operator can inspect the article on the front front of the forms 82, then rotate the device 96, 82 and

  repeat the inspection on the other front of the 82 shapes themselves

  same. The inspection is carried out while the arms 70 are in positions in which they do not interfere with the article insertion and inspection maneuver which is indicated above. At the end of the inspection, the arms 70 are moved outwards while the extensions 72 B, 74 B

  on each side are brought together and in correspondence

  weighting of channels 86, as well as below these.

  Once the inspection has been completed, the lifting order of the cha-

  riots is given Said carriages lifting, the two pairs of extensions 72 B, 74 B which are side by side penetrate into the channels 86 and drive the edge of the article by

  raising, and thereby raising the article itself.

  During the lifting of the carriages 57, the article M thus remains entrained by the extensions 72 B, 74 B, the points PM being displaced and left hanging on the side of the operator O. The lifting of the carriages t 7 being completed, the two pairs of arms 70 move angularly to move away from the operator in the direction of the carousel of the forms 101, to arrive above the pair of forms 101 which is at the insertion station A comprised between the two structures 51; during this angular displacement, and for the reasons already indicated, the appendages 72 A, 74 A and the extensions 72 B, 74 B of each pair of arms 70 move apart and thereby widen the edge BM to bring it to a approximately rectangular and elongated shape, outside of the shapes 101,

  (when you consider the plan view) above these shapes.

  The article M is thus ready for insertion in the forms 101, while the points PM extend on the upper edge 92 A. At this point begins the phase of insertion of the article on

  the pair of forms 101 (which can be found at station A) via the

  intermediate of the lowering of the carriages 57 and of the separated pairs of the extensions 72 B, 74 B, which reach the lowered position while being further apart; in this position, the edge BM of the article M is removed from the extensions 72 B, 74 B which continue their lowering movement until the article M is completely inserted, also using a member in the form of an insertion finger which will be described later and which acts between the two forms 101 on the crotch "of the article during its own lowering stroke; other means are also provided with soft appendages

  forming stretching pads of the article which will also be

  described below to facilitate the insertion of the ar-

  ticle on the forms 101 The lowered position being reached, the pairs of arms 70 of the carriages which are lowered are subjected to an angular displacement to reach, starting from the position leaning towards the carousel, a position leaning outwards and inwards. operator, accompanied by reconciliation

  which follows extensions 72 B, 74 B and their positioning

  below channels 86, to repeat the cycle.

  The insertion operation of the article on forms 101

  can also be carried out without the preliminary inspection phase

  mining on forms 82, any inspection that may

  be performed in this case after stretching on the forms 101.

  In this case, the shapes 82 and their support means are removed, as well as the possible mirror 90, the frame 92, 92 A remaining in function without constituting an obstacle to the visibility of the pair of shapes 101 located at the post

  rear A In this case, the operator, instead of stretching the

  key on the 82 shapes, and always grabbing the BM edge of

  the article, places it directly on the extension pairs

  72 B, 74 B which are side by side in the lowered position and advanced outward, or even during the lifting of

  carriages 57 and therefore pairs of extensions

  chés, in the absence (as already said) of the support structure 80 of the forms 82 and the latter The article therefore reaches with the extensions 72 B, 74 B the position raised in

  view of their transfer in the manner already described to the posi-

  tion overhanging on the forms 101, with a view to the insertion on the pair of said forms 101 located at station A At the

  limit, we can exclude, for example by rotation, the whole

seems 51, 59.

  To control the vertical reciprocating movements of the carriages 57, the respective chains 120 which are returned by the chain wheels 122 and 124 are mounted as already said in the two structures 51 arranged face to face, one

  two-wheel drive which is driven by a motor-

  conductor 126; the two chains can be driven by the same drive source or by two independent but synchronous drive sources The reversal control can be obtained by reversing the gearmotor 126 or by switching the coupling of the carriages 57 to one or to the other strand of the respective chains, alternately For this reversal, it is possible in each case to provide limit switches 128, 130 (FIG. 5) of the microswitch type or the like, cooperating with a stop provided on the respective channel or

250 850.6

  on one of the chains 120 As a variant, it is possible to provide a control such as that which is illustrated in FIGS. 26 and 27. The arms 70, articulated at 68 on the carriages 57, as already said, must be rocked from one position inclined outwards towards an inclined position inwards, when the carriages 57 reach their raised position, so

  to separate the ends 72 B, 74 B as they reach the

  above the forms 101 The reverse tilting movement towards the outside and bringing the ends 72 B, 74 B must be carried out at the end of the downward stroke To obtain this result, fixed stops are provided in the structures 51 132 (FIGS. 2, 11, 19 and 20) with which the appendages 134 of the arms 70 cooperate, which project radially with respect to the articulation 68 of one of the arms,

  to tilt the arms themselves inward

  eur in the direction of arrow fl, at the end of the lifting stroke; similar stops 136 provided in the section

  lower part of the structure 51, impose on the arms 70 the lower

  reverse, i.e. outward and in the direction of arrow f 2, at the end of the downward stroke of the

carts 57.

  As already said, the ends 72 B, 74 B separated from the pairs of arms 70 insert the article M on the forms 101, article which the ends 72 B, 74 B grip by the edge BM

  from the waist line by advancing it down.

  The article, during this movement, moves on the edge 92 A as it is brought down and the GM legs of the article are thus inserted on the forms 101 This operation is carried out not only by said two ends 72 B, 74 B, but also by a finger-shaped member 140, angularly movable around a joint 142 supported by a carriage 144 This carriage can move along a

  vertical and central slide 146 supported by a structure

  rear frame 148 supported by the central structure 39 and

  symmetrically arranged with respect to the two green structures

  tical 51, inside the crown formed by the pairs of shapes 101 The finger-shaped member 140 is biased there in an angular position raised by spring means 149, and this finger-shaped member comprises an appendage as a square with a control roller 150, which can cooperate with a fixed profile 152 capable of imposing (against the action of the opposing spring 149) a lowering of the finger 140 so that it is arranged between the two hot shapes 101 in insertion position A, i.e. at

  the front of the structure 148 The angular lowering of the gold-

  gane 140 is caused by the profile 152 as soon as the carriage 144 begins a lowering stroke Thanks to this movement, the article is also stressed upon insertion on the forms

  101 by the action of finger 140, which acts in correspondence

  crotch dance "to push the body of the article down in cooperation with the action of the ends 172 B,

  174 B the carriage 144 is controlled by lifting and a-

  lowering of one of the two chains 154, 156 which are mounted on the structure 148 and advantageously returned by chain wheels, one of these wheels corresponding to each chain being actuated by a respective geared motor 158, 159, the carriage 144 being connected to the adjacent strand and parallel to the guide 146 of one of the chains, for example of the chain 154; the lowering control of this carriage is controlled by a program comprising suitable devices so that the lowering is determined only after the ends 72 B, 74 B have started inserting the article

  on hot forms 101; the upward movement of the cha-

  riot 144 can be obtained by an appropriate lower limit switch, until it stops in the raised position where the finger 140 also returns to the angular position raised upwards under the action exerted by the profile

command 152.

  On the guide 146 (FIGS. 5 to 7 and 9) there is movably mounted a second carriage 160, also supported by means suitable for

  ensure the insertion of the article on the pair of warm forms

  101 This second carriage 160 includes a crossmember 162 on

  which are articulated in 163 two pairs of symmetrical brackets

  triques 164; the brackets of each pair carry at their upper ends soft appendages 166 projecting in the manner of consoles, capable of acting on two longitudinal edges of a respective shape 101, and against which they are biased by a spring 168 The pairs of brackets 164 can be controlled, against the respective spring 168, by cylinder and piston systems 170, which act by means of a respective cross member 172 on the ends of the arms of the brackets 164 of each pair which are at the opposite ends carrying the soft appendages 166; when a cylinder and piston system 170 recalls the respective cross member 172 upwards, the latter causes a deviation

  of the upper parts of the levers 164 and therefore the

  relative appendix detail 166 Apparatus 160, 162

  is controlled by the chain 156 which is activated by the moto-

  reducer 159 independently but synchronized with respect to the chain 154, and always by means of a

  program for initiating lowering, through

  diary of a limit switch for reversing

  movement and with a limit switch

  intended for stopping in the raised position The device-

  lage 160, 162 begins the lowering movement when the ends 72 B, 74 B, by lowering, have started the insertion of the article on the forms 101 of the pair which has reached insertion station A, and after the active run of lowering the carriage 144 of the finger 140 also began With

  lowering of the apparatus 160, 162, the pairs of appen-

  soft dices 166 recalled by the springs 168 act gently on the article which is about to be inserted on the hot forms 101, said appendages 170 resting on the longitudinal edges of the forms; thus ends the insertion of the article and in particular of the points PM of the legs GM When the soft appendages 166 have reached their goal, the cylinder and piston system 160 is controlled to recall the cross members 172 upwards, thus causing the of the fluffy appendages 166, which cease

  to exert their action on the article; at this point, the device-

  lage 160, 162 can be lifted again by a command

  reverse of the part of the chain 156; the lifting movement

  This takes place immediately before or at the same time

2.508506

  that the lifting movement of the carriage 144, which has

  accompanied by the action of the appendices 72 B, 74 B The cumulative action

  tive of appendages 72 B, 74 B, finger 140 and pairs of fluffy appendages 166, ensures total and regular spreading of articles M on pairs of hot shapes 101 as they appear at the insertion station A, which allows

  to obtain regular stretching of the articles.

  Considering more particularly FIGS. 1 to 4, it can be seen that on a platform structure 200 forming carrou-

  salt, eight hot forms 101 are provided by means of the arms 202

  according to this example, these forms being moved from the information station

  setting A and in the direction of arrow f 800 in order to successively reach the successive positions indicated in B, C, D, E, F, G and H by an intermittent movement Along the route between positions B and F s '' draws

  the article with heating and also a possible humidification

  cation; the treatment can be carried out by said hot forms 101, also under the action of an atmosphere defined by a gallery which can be arranged along at least part of the route between stations B and F.

  At stations A to F, the pairs of shapes 101 are co-planar-

  res and side by side These forms are also mounted on respective arms 202 of the carousel platform 200 in an articulated fashion and along a common central vertical axis defined by articulation axes 206 The two forms 101 of

  each pair can also be moved from the posi-

  co-planar to a position in which they are side by side and parallel to each other, as shown in item G reached after stretching To control the movement

  angular of the forms 101 of each pair around the articu-

  respective vertical relationships 206, the two forms (FIGS. 3, 4 and 10) are connected by rods 208 to a lever 210 which is articulated respectively at 212 to the arm 202; the lever 210 is provided with a feeler means 214 capable of cooperating with a cam and channel profile 216 disposed between the station F and the station H. This profile 216 can impose, by means of the tie rods 208, the symmetrical angular movement of the two forms 101 around the joints 206 and in the direction of the center of the platform 200, during the movement between the station F and the

  post G, and again the reverse symmetrical angular movement

  said forms during the passage between station G and station H, so as to arrange the forms in order to reach the insertion station A in the correct position suitable for

receipt of the item.

  Station G is set up to obtain the extraction of the

  ticle stretched by means of a sampling system For reali-

  ser the sample, that is to say the extraction of the article from the forms 101 which are side by side at station G (Figures 10 and 13 to 16), a fixed structure 300 is provided, which forms a vertical guide 302 intended for the movement of a carriage 304 which can

  move from a higher position 304 A to a lower position

  eure 304 B (figure 10) passing through intermediate positions

  diaries such as those indicated in 304 The movement of the carriage 304 is obtained by means of a chain system 306, supported by the structure 300 and controlled by an electric geared motor 308 capable of being actuated according to reciprocating movements in both directions for lifting and lowering, via programming and appropriate limit switches The carriage 304 carries a hinge 310, an extraction finger 312 of which an arm is integral 314 comprising a feeler ball joint 316 capable of cooperating with a vertical cam profile 318, this feeler ball joint 316 being urged against the profile 318 by a small spring 320 The profile 318 is produced so that in the lower position 304 B, the finger 312 is arranged in a lowered position 312 B and unthreaded relative to the forms 101 arranged side by side at the station G, which makes it possible to obtain the translation of the pairs of forms 101 in order to reach and then to overtake post G When the carriage 304 is lifted from the lower position 304 A, the

  profile 318 forces finger 312 to assume a raised position

  horizontal path between the two forms 101 placed side by side and located at station G The lifting stroke of the finger 312 causes a lifting action of the article M threaded on the forms 101, by exerting an action on the edge BM of the belt line This action of finger 312 facilitates the extraction and removal which is carried out by means of the device which will be described below. At the end of the lifting, the carriage 304 returns to the lowered position and finger 312 is carried over. towards position 312 B to allow intermittent movement of the carousel platform 200. Inside each form 101 (see also Figures 23 to 25) is longitudinally formed a displacement seat for a rod 320 which has at its upper part a shaped head 322; this head can move between and along a hollow end portion 324, which is hollowed out in each shape, this cavity being provided over the entire thickness of the shape When the head 322 is lifted, it completes the profile of the upper end of the form 101, while when the head 322 is lowered, it leaves the cavity uncovered at the upper end part, so as to allow the point PM of the article to be taken, which extends while being stretched at the end of the article, and therefore also in the area of the cavity 324 The head 322 which is raised ensures the continuity of the profile at the end of the

  form, for ease of insertion of the article.

  The lowering of the head 322 allows the grip of the tip of

  the corresponding article of the hollow part 324.

  With a view to taking the point of the article and the sample

  vement from forms 101 at station G, a device with two clamps 326 is provided, supported by a carriage 330 capable of moving horizontally In practice, two carriages 330 can be provided comprising respective clamps devices 328, connected to a certain distance from each other to a pair of chains 332 movably guided in tracks of a horizontal structure 334, on which the chain return wheels are also provided. A geared motor 336 is actuated intermittently and provided for picking up and transporting the stretched article on

  a surface 338 disposed below the active strand of the trans-

  carrier represented by the chains 332 Each carriage 330 comprises vertical guide means 330 A for raising and lowering the clamp assembly 328, when the latter reaches with a carriage 330 the extraction position above forms 101 at station G The structure 334 is supported by a console 340 combined for example at the top of the structure 300 To the console 340 is applied a control system 342 with cylinder and piston, and the mobile device 344 comprises a console 346 able to be placed in a notch formed in the body of the clamp

  328 Pliers which are in the extraction position above

  above forms 101 located at post G can therefore be

  lowered and raised to pick up the item by grabbing it

  by a double clamp corresponding to the cavity 324.

  On the console 346 is provided a support 350 supported by a control system 352 capable of controlling by means of a

  rod 354 the control element of the double clamp, for the

  casing before completing the lowering movement and for the

  close before the lifting movement for the extraction

  tion of the article The assembly of the clamp 328 has a

  central appendage 328 A liable to penetrate during the

  lowering, between the two points of the forms 101 arranged side by side; the central appendage 328 A is flanked by a pair of arms 328 B which are symmetrical and symmetrically articulated

  to the body of the clamp, and likely to be distant from the ap-

  pendulum 328 A under the action exerted by the rod 354 on a transmission rod 328 C mounted in the body of the clamp 328 Thanks to the control system 352, the double clamp 328 A is thus opened and closed, 328 B and

  therefore entering the two PM points of the article to be

  rer The article seized by the points in the manner indicated above

  above is extracted forms 101 arranged side by side, due to the lifting and translation of the body of the clamp 328; the lifting, which is obtained by the system 342, is preceded by the lifting of the extraction finger 312, the latter moving the body of the article up and along the forms 101, thus determining the extraction by the double clamp 328 Besides being lifted along the guide 330 A, this clamp is also driven in due time in the direction of the arrow f 338 along and above the surface 338, which means that the article is not only extracted from forms 101, but also extended on said surface, from where it will be

  then removed for making or other manipulations.

  The control of the heads 332 and therefore of the rods 320 is obtained from a control system 370 supported by the frame of the machine and which vertically moves a console 372 in

  correspondence of the extraction position G, and possible-

  with a certain advance There, the console 372 has in its slot a lower head 374 rods 320 of pairs of shapes which appear progressively at station G, or inside it. Thus, the command 370 determines in good time the lowering of the head 322 with a view to gripping the points of the article by the clamp 328, in correspondence

  notches 324; the same system 370-372 determines the resolution

  lifting of the heads 322 when the pairs of shapes concerned move in the direction of station A. Provision is made for controlling the intermittent movement of the carousel platform 200-202 on the central structure 39 (see FIGS. 2 to 4, 17, 18) a device 402 of the Maltese cross type or the like, which acts on a toothed ratchet 404 meshing with a toothed crown 406 secured to a cage

  408 being part of the carousel The device 402 is ac-

  powered by a 410 engine and via a trans-

  belt mission, and a means of

manual control 412.

  The central structure 309 and the machine is associated with a

  program combined with various control and inter-

  limit switches, which can easily be understood

  dre the operation by the description given above.

  The entire program also includes a selector capable of storing the deviations noted by the operator during the inspection at station A, using the inspection form 82

  and / or mirror systems The operator has a button-

  pusher on which it acts when it is in the presence

  of a defective item or to discard The signal of this button-

  pushbutton is stored in memory so as to determine the command to eliminate the defective item when it reaches the extraction station G The storage can be of the electronic type, or of the electro-mechanical type, or even of the type

* electro-pneumatic In the drawing is shown a provision

  memory storage device comprising a selector 430 provided with studs 432 which are raised or lowered according to the indications obtained by the above-mentioned push button; the selector 430 moves synchronously with the carousel 200 and causes for example the activation of a suction mouth 434

  (see Figure 3), which eliminates the defective item when it

  this reaches the extraction station and is extracted, or else puts

  action immediately after the elimination of the

  defective key and before the next movement of the machine in

  view of the extraction of a following article.

  According to the variant shown in Figures 26 and 27, a

  insertion device indicated as a whole in 501 cooperates

  re with the gripping extensions 72 B, 74 B, the device being placed on the support 80 in place of the devices 82,

  84, 86 of the previous solution, and authorizing a presentation

  convenient tation of articles to the means of seizure represented

  by said extensions This assembly 501 includes a sup-

  port 503 forming a rotation seat with horizontal and transverse axis for an apparatus comprising a cross-member 505 and two pairs of angled appendages in the form of a blade 507,

  which are arranged at the ends of the cross-member 505 and ortho-

  rotated relative to the axis of the latter, which is also the axis of angular displacement of the crosspiece; the angle-shaped appendages 507 are spaced apart from each other in the same way as the wings 84, in order to define the intermediate spaces corresponding to the channels 86 An element in the shape of a guide blade 508 is advantageously combined with the appendages 507 , able to facilitate the maneuver of insertion of the article In the support 503 are provided

  means not illustrated but which one can easily imagine -

  which impose on the crossmember 505 and appendages 507 two

  respective positions, appendages 507 being turned horizontally

  horizontally outwards (figure 26) or brought vertically-

upward (Figure 27).

  In order for the article M to be inserted in a position allowing it to be removed from the machine, the operator who finds the appendages 507 of the element 508 in a horizontal position and turned outwards (i.e. towards operator), can easily put on the BM edge of

  the article on appendices 507, by a brief hori-

  zontal from the edge BM towards the body of the machine This being done, the cross-member 505 is turned around its axis to present the appendages 507 in a vertical position turned upwards, a position which corresponds to that of the wings 84 and of the channels 86 Thanks to the movement already described, parallelogram arms 70 and extensions 72 B, 74 B, the latter penetrate into the intermediate space between the pairs of appendages 507, grasp the edge BM and remove

  lifting the article and then transferring it to the

  above hot forms 101, with extension of extensions

  elements 72 B, 74 B and insertion into hot forms 101, at the

already described.

  This arrangement facilitates the repeated maneuver by the operator.

  during his work period, when we give up

use shapes 82.

  In the variant embodiment shown in FIGS. 28 and 29, an alternative control of the carriages 57 is used which involves decelerations and accelerations at the ends of the reciprocating races of the carriages, on the occasion of the reversal of the movement, this which can also allow recourse to a continuous movement of the chain 120 which is returned to the upper part by the chain wheel 122 and to the lower part by the chain wheel 124 According to this embodiment and via an arm 601 articulated at 603, each carriage 57 is connected to the respective chain 120, in correspondence with a shoe articulation 605 connected to a chain link. It follows that thanks to a very continuous movement of these shoes with the chain, the swing arms 620 perform along the arcs of

  return chains an oscillation between two extreme positions

  mes along the vertical strands of said chains; along the chain deflection arcs and around the wheels 122 and 124, the drive of the carriages 57 follows a law of deceleration and acceleration which can be roughly compared to a sinusoidal law, and therefore of decelerations and gradual accelerations The chains can move in a movement

  continuous and may stop approximately in correspondence

  dance of the point of maximum lifting (and / or lowering) of the shoes 605 along the active trajectory of the chain wheels, i.e. approximately half of

  the chain return arc 120 on the respective wheel.

  One can also adopt a provision of this type for driving other trolleys or skids using chains, as already indicated for example for the control of

  carriages 144 and 160 and / or carriage 304.

  When the command is applied to the carriages 57, the provision

  sition indicated above which includes the arms 601 can be used with advantage also to determine the angular displacements of the arms 70 and movements smoother than those obtained by means of stops, and also in a simpler way In this regard , there is provided a gear 607 concentric with the articulation 603 and integral with the arm 601 of each carriage; this gear 607 meshes with a toothing

  609 in sector, integral with arms 70 and concentric with the rear

  respective ticulation 68 Thus, the angular oscillation of the arm 601 along each of the return trajectories of the

  chain on the chain wheels 122 and 124, determines a movement

  corresponding angular ment of the two arms 70 (one of the two being driven by the one which is integral with the teeth 609) according to a similar law of acceleration and deceleration By correctly choosing the articulation 68 to be coupled to the gear 607, the two movements of the pairs of arms 70 are obtained from the outside of the machine and in the direction of the hot forms 101 in the position for receiving the article, or respectively for the movement towards the outside of said arms,

  in the lower part of their back-and-forth travel.

  In these conditions, it is possible to have recourse

  also to a continuous movement of the chains 120.

  The operator who inserts the articles on device 501 or any other equivalent device may be exempt from the

  visual inspection of the item, or else he can monitor only-

  the front of the article on forms 101 which are at station A or on the way to station B Another operator further downstream can then be devoted to inspection, or

  complete the inspection, also using mirrors.

  As is obvious, and as already follows from the foregoing, the invention is in no way limited to those of its embodiments, no more than to those of the embodiments of its various parts, having been more specificaly

  considered; on the contrary, it embraces all the vari-

  antes- The possible presence of numerical references in

  the purpose of the included claims is to facilitate the

  reading of the claims with reference to the description and

  drawings, but are not intended to limit the scope

  application of the protection provided by these claims.

Claims (7)

  1 Inspection and drawing machine with articulating attachment   stocking or pantyhose type keys, including a structure   in carousel with a series of pairs of label shapes   rage intended to be moved cyclically between an insertion station and an extraction station, characterized in that at the insertion station (A) is provided an assembly comprising carriage means (57) (or equivalent) which can be raised and lowered, disposed on the sides of an article inspection and insertion station, on said carriage means, arms (70) oscillating between an internal position and an external position, at the movable ends of these arms of the appendages (72 B-74 B) capable of grasping the edge of the belt of the article and able to deflect it during movement to the internal position in which said appendages present the article above the pair of forms (101) found at   insertion station (A), and oscillating control means   tions of said arms and lowering of said carriage means for the insertion of the article on the forms (101), with the help of auxiliary means acting centrally between the   shapes and along the outer edges of the shapes.   2 Machine according to claim 1, characterized in that there is provided on each side of the insertion station a pair of arms (70) with double links (72-74) with articulations in   articulated parallelogram, fitted with appendages (72 A-74 A) deca-   strips which, in a position of the arms (70), are side by side, and   in the opposite position are spaced from each other.   3 Machine according to claim 1 or 2, characterized in that said appendages (72 A-74 A) are provided with extensions (72 B-74 B) turned upward for gripping the edge of the article. 4 Machine according to claim 1, characterized in that   that it comprises a horizontal edge (92 A) disposed at the a-   front and above the forms at the insertion station, along   which slides the article during the transfer, for the accom-   wrap during insertion on the forms (101).   Machine according to claim 1 or 3, characterized in that it further comprises an inspection form (82) available in position at the front of the forms (101) being in the insertion position, on which are inserted the articles, said inspection form (82) having on its outer edges channels (86) between which the extensions (72 B-74 B) of the appendages move upward to drive   the edge of the item and transfer it.   6 Machine according to claim 5, characterized in that said form of inspection (82) is capable of being   rotated around a central vertical axis for an inspection tion on both sides.   7 Machine according to claim 5 or 6, characterized in that said shape (82) is supported by an articulated frame   by which it can be excluded.   8 Machine according to claim 1 or 3, characterized in that it comprises, at the insertion station, a horizontal device (505) provided with a pair of appendages (507) and capable of assuming a position such as the appendages (507) are turned towards the operator, who thread the edge of the article there, and a position where the appendages (107) are turned upwards so that the edge of the article is taken up by the extensions (72 B-74 B) arms (70), when they are placed side by side for the lifting stroke, a profile of   guidance which can be combined with said appendices.   9 Machine according to claim 1, characterized in that to actuate the carriages (57), there are provided chains, continuous (120) and returned by chain wheels (122-124)   at the ends of the races of the carriages, and of the oscil-   lants (601) articulated respectively on the carriages and on the chains.   Machine according to claim 9, characterized in that said oscillating arms (601) are kinematically connected (at 607-609) to the arms (70) for transferring the article, to control the oscillations of said arms (70) at the ends carriage races (57).