FR2559757A1 - DEVICE AND METHOD FOR SHAPING THE SHAPE PART OF BOTTLES OF THERMOPLASTIC MATERIAL SUCH AS GLASS BOTTLES - Google Patents

Abstract

THE INVENTION CONCERNS A MACHINE INTENDED TO MANUFACTURE ARTICLES IN THERMOPLASTIC MATERIALS, FOR EXAMPLE OF GLASS. THIS MACHINE ESSENTIALLY INCLUDES A 14 CARROUSSEL WITH PAIRS OF MANDRELING ASSEMBLIES 16, 18 VERTICALLY ALIGNED TO THE PERIPHERY OF THE CARROUSSEL AND MACHINING CARTS DRIVEN WITH THE CARROUSSEL AND CARRYING FIXED MACHINING STATIONS ON A CHAIN TO MOVE INTO A CHAIN. MACHINING CARTS. THE INVENTION APPLIES IN PARTICULAR TO MACHINES FOR MANUFACTURING FLASKS AND GLASS BULBS.

Description

-1-

APPARATUS FOR MANUFACTURING BOTTLES

  The present invention relates generally to machines for forming articles such as bottles and containers made of thermoplastic materials such as glass, and more particularly relates to a

  machine intended to form the neck of a bottle, comprising

  an outer edge and a throat pushed inward.

  Machinery for the manufacture of large

  As a standard, small items of thermoplastic material such as glass bottles and ampoules are well known in the art and have reached a high degree of elaboration. Examples of such machines are described in US Pat. Nos. 3,227,539 and 3,424,570. In general, these machines comprise a carousel with several pairs of vertically aligned rotating mandrels arranged around a rotating frame. . When the frame turns as well as the mandrels, they pass through several relatively fixed positions that heat, separate and form glass tubes into tubes.

  vials, ampoules and other containers.

  The speed of production of these machines is

  mitigated by many considerations, the duration of which

  necessary for the slowest and most

  The most complex part of the production sequence is not the least. Clearly, in such a sequential machine, the longest operation determines the speed of production. In the manufacture of glass bottles which may comprise a neck with an outer rim and a groove pushed inwards, the manufacturing phases to form this neck represent

  usually the most complex and slow phase.

  It is therefore desirable to increase the speed at which

  the neck of a bottle is machined to increase the

  overall speed of the machine and its rate of production.

  U.S. Patent No. 3,730,699 discloses a principle directed toward increasing the production speed of such a machine for manufacturing glass bottles. This patent discloses a machine for manufacturing articles of thermoplastic material in which two carriages support endless conveyors comprising tools which are engaged and disengaged from the raw material disposed in the rotating mandrels of a vertical machine for manufacturing vials.

  glass, to perform the machining of the neck of the article.

  It has been suggested that three or four tools be

  preferably on each carriage assembly. But it became apparent that an increase in machining stations

  entails a corresponding increase in

  cooling of the machining elements of the neck, improving

  performance. In addition, the device described in this patent only provides a diameter neck

  uniform interior. It is common practice to pre-

  see an external groove pushed inward into the inner wall of the neck of the bottle. It seems like

  the device according to the aforementioned patent is not

  to produce such a configuration.

  According to the invention, a machine for manufacturing

  small items such as flasks or other containers

  pients in a thermoplastic raw material comprises

  several pairs of rotating chucks, superior

  lower and lower, for example 36 pairs, which are

  generally around the periphery of a

  circular dre around a vertical axis. The

  senior positions in mandrinage receive and maintain

  lengths of a hollow product, such as glass tubes. Various heating, separating and forming stations transform the glass into containers that leave the machine via the lower mandrilling stations. The various heating, forming, and mandrilling operations are performed in such a way that a closed end or neck is made in a 180 rotation of the main frame of the machine and that a complete article is produced in a rotation of

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  -3- 360. Thus, each operation is performed every one and pairs of positions fulfilling identical functions can be arranged in positions

  diametrically opposite around the machine.

  These pairs of device diametrically opposed

  are the sets of machining stations according to the invention

  tion. Each machining station assembly includes a

  seems to be a conveyor with, for example, 9 of these

  swimming fixed on a chalne moving and circulating

  around the conveyor assembly. Each of the job

  has free wheels above and below

  res that engage the rotating peripheral surfaces

  of collars on the upper and lower pairs of mandrels

  the machines, and align exactly with them. A horizontally directed cam and a roller

  partner attached to each of the machining stations the entral-

  vertically close to the neck of the flasks of

  which are fixed in the upper chuck

  laughing. The operating elements of the pos-

  machining tasks include a pair of

  born by cam and mandrel segments. When axially aligned with the neck of the vial, the thumbwheels move toward each other and engage the outside of the neck of the vial while the segments of the mandrel part to form the inside of the neck and a refolded throat if any. After the end of the machining operations, the knobs move away from each other and the finished bottle neck, the chuck segments come closer and the entire machining station

  descends vertically, moving away from the neck.

  A machine for making bottles according to the invention

  The invention preferably comprises 36 pairs of rotating mandrels vertically aligned or 18 positions on a given half or 180 of the machine. It has proved advantageous to link the number of machining stations to the number of sets of rotating mandrels in order to

  to ensure optimal performance. In this respect, the

  The use of 9 machining stations per conveyor assembly ensures that each machining station engages and operates repetitively and only with the same four pairs.

  of rotating mandrels. It also appeared that this name

  number of machining stations ensures a cooling

  increased for the tools between each sequence of

  swimming, which also improves the performance of the

  machine and the qualities of the finished product.

  The object of the invention is therefore to propose a

  machine for the manufacture of articles made of pre-

  thermoplastics, for example flasks and

glass containers.

  Another object of the invention is to propose a vertical machine for manufacturing glass bottles comprising two conveyors diametrically opposed with

  several machining stations in circulation.

  Another object of the invention is to

  install a vertical glass vial manufacturing machine with vertically aligned pairs of rotating mandrels and circulating machining stations

  placed on peripheral conveyors, with a report

  between the pairs of chucks and

2: 1 machining stations.

  Another object of the invention is to

  put a vertical machine to make flasks

  taking machining stations forming both a flange on the outer surface of the neck of the bottle and a

  throat discharged on the inner surface of the neck.

  Another object of the invention is to propose a vertical machine for manufacturing glass bottles comprising machining stations circulating on

  diametrically opposed conveyors, each

  swimming comprising a pair of rotating knobs and a

segmented mandrel expandable.

  Other features and advantages of the

  will appear during the description that will

  follow of an exemplary embodiment and with reference to the attached drawings in which:

  FIG. 1 is a perspective view of a machine

  vertical china to manufacture glass vials according to the invention, Figure 2 is a schematic representation of the drive elements of the vertical machine manufacture glass vials according to the invention, Figure 3 is a partial side view of two vertically aligned mandrel stations and a pair of sets of machining stations of a machine

  vertically to manufacture glass bottles according to the

  Figure 4 is a side view of one of the two sets of machining stations; Figure 5 is a partial sectional view of one of the two sets of machining stations;

  Figure 5A is a partial perspective view--

  the machining station operating cams, FIG. 6 is a top view of one of the two machining station assemblies; FIG. 7 is a top view of a machining station carriage; according to the invention, FIG. 8 is a side view of a machining station carriage according to the invention, FIG. 9 is a section of a machining station according to the invention, according to line 9. 9 of FIG. 7, FIG. 10 is a section of a machining station according to the invention, along the line 10-10 of FIG. 7, and FIG. 11 is a partial view from above of the adjustment device of FIG. mandrel of a machining station according to the invention,

  FIG. 1 thus represents a vertical machine

  the manufacture of bottles according to the invention, generally designated by the reference 10. The machine 10 comprises

  a circular frame 12 which supports a central carousel

  tral 14 mounted to rotate about a vertical axis.

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  The carousel 14 carries upper mandrel assemblies

  lower and lower 16 and 18 respectively, which are arranged in pairs, aligned vertically. Each of the

  the upper chuck assemblies 16 receives a length of

  as a glass tube 20 from which articles are made. Although the number

  pairs of mandrel assembly 16 and 18 can

  For example, the machine 10 comprises, for example, 36 pairs. By way of example and illustration, this number of pairs of chucks 16 and 18 will be used. It is necessary

  however note that larger or smaller numbers

  The set pairs 16 and 18 may be suitable for implementing the invention. Two sets of 22

  double belt conveyor unload the final articles

born of the machine 10.

  Referring now to FIGS. 1, 2 and 3, the carousel 14 is rotated by a drive assembly 24 comprising, for example, an electric motor 26, a speed reducer unit 28, a

  transmission device such as a chain or a cour-

  box 30 and a gearbox 32 for dispensing

  motor force. Gear boot 32 has an armature

  34 vertically oriented bearing a pinion 36 dis-

  placed near its upper end. The pinion 36 drives a right gear 38 fixed to the carousel 14. The start of the drive assembly 24

  therefore causes the carousel 14 to rotate.

  appears to be superior in mandrinage 16 and each set of

  18 of the mandrel forming a pair are

  coaxially aligned to rotate about a vertical axis

  cal and comprise pinions 40 which meshing with a respective one of two upper and lower spur gears 42. The spur gears 42 are driven by a

  variable speed drive assembly 44. Rotation

  carousel 14 causes a synchronous rotation

  of each of the pairs of upper mandrel assemblies

  16 and 18, the rotational speed being adjustable with respect to the rotation of the carousel by the drive assembly 44. Each of the upper and lower mandrel assemblies 16 and 18 has a smooth-walled collar 46. fixed to turn with it, and arranged concentrically. Various fixed heating and cam elements (not shown) are arranged around the machine frame 12 and, when the upper and lower mandrel assemblies 16 and 18 rotate around the center of the carousel 14, the glass tubes 20 are heated, cut and machined into a desired article, for example a glass vial, which has been removed from the machine by one of the conveyor assemblies 22. As has been indicated, the manufacture of an end or a neck is made on a 180 rotation of carousel 14; a complete article is manufactured during a rotation of 360. In order to maximize production, the end of one article and the neck of another can be produced simultaneously in a rotation of 180

  and for this purpose, all heating stations and

  on the machine 10 in dia-

strictly opposite.

  As shown in Figures 1, 2 and 4, the

  China to manufacture vials 10 comprises two sets of machining stations diametrically opposed. The rotational energy is supplied to the machining assemblies by shafts 52 from the gearbox 32 of motive power distribution, two transmissions

  54 at right angles and two trees 56 oriented vertically-

  is lying. Each of the vertical trees 56 ends with a

  gear wheel 58 around which passes a chalk 60.

  A free toothed wheel 62 ensures the correct tension of the chalk 60 which is arranged around a toothed wheel.

  chain 64 and transmits him the driving force. The wheel den-

  Tee 64 is arranged to rotate in a bearing 66 fixed to a frame 68 of the machining station assembly 50. One element of a splined assembly 70 is fixed to rotate on the gearwheel 64 to transfer the driving force to the other element of the splined assembly 70 and to

  Consequently, a drive gear 72

  in a conveyor assembly 74 while allowing adjustment of the vertical height of the conveyor assembly 74 relative to the frame 68, in a manner to be described in FIG.

more in detail later.

  The frame 68 and the conveyor assembly 74 are mounted to pivot on the frame 12 of the machine

  in order to deviate from it and to facilitate the

  and the maintenance of the various elements therein

  mounted. The vertical shaft 56 passes into support brackets

  78 and 80, aligned axially, extending respectively

  from the frames 68 and 12. The shaft 56 is preferably arranged in steps 82 fixed in the

  supports 78 and 80 and is exactly positioned

  the stretching in an anti-friction block 84 which is also fixed on the machine frame 12. The shaft

  56 thus functions as a hinge pin

  turn of which all 50 machining stations can pi-

  vote in the manner already described. A device

  locking as a threaded retaining pin 86 extends

  the frame 12 in the frame 68 can be used

  in order to maintain the turntable assembly 50 of the machining station in its operative position against the path of the upper mandrel assemblies 16 and 18

  and lower respectively as shown in Figure 3.

  Figures 4 and 5 show that the vertical adjustment

  of the conveyor assembly 74 is carried out by a machine

  adjusting mechanism 90. Adjustment mechanism 90

  has a horizontal shaft 92 which passes through a cushion

  net 94 suitable, fixed on the frame 68. A steering wheel 96 is

  attached to the end of the shaft 92 and a collar of

  holding 98 maintains the shaft 92 in fixed axial position

  relative to the pad 94. A set 100 of

  The auger transfers the rotation of the shaft 92 to a vertically directed threaded rod 102. The threaded rod is preferably supported by anti-friction bearings 104. The threaded portion of the rod 102 is disposed in a complementary tapped hole 106, formed

  in a vertical plate 108. The plate 108 is now

  to slide vertically along a parallel support plate 110 by fasteners 112, selectively attached, and is held against lateral movement by the fasteners

  112 as well as by trapezoidal support plates 114.

  The rotation of the flywheel 96 therefore drives the rotation of the elements of the worm drive assembly 100, the rotation of the threaded rod 102 and the raising or lowering of the conveyor assembly 74.

  In this respect, the canelé assembly 70 maintains the trans-

  driving force to the conveyor assembly 74 in

  the whole range of vertical movement produced by the

adjusting mechanism 90.

  Figures 5, 6 and 8 show that the conveyor assembly 74 supports a plurality of machining carriages 120 which travel along a controlled path along its periphery. As already indicated, the number of machining carriages 120 is preferably linked to the number

  pairs of sets 16 and 18 of chucks.

  It has proved advantageous to use 9 trolleys

  120 on each of the two sets of 50 machining stations in a vertical machine manufacturing

  bottles containing 36 pairs of sets 16 and 18 of pos-

  chucks. Each of the machining carriages 120 has a rectangular support block 122 which rests on an inner bearing surface 124 and a surface

  126, forming part of the whole

  conveyor belt 74. Convex chalk guides 128

  positioned between the bearing surfaces 124 and 126 guide the drive chain 130 from the drive gear 72 disposed at one end of the conveyor assembly 74 to a free gear 132 arranged

  to turn in the conveyor assembly 74 at its end.

  opposite. The training line 130 is a - | u -25975 Hollow rivet and, in spaced hollow rivets

  fasteners are arranged such as

  134. The bolt 134 passes into a bearing, like an anti-friction bearing 136, and thus ensures a rotationally reduced friction fit between the support block 122 of the machining carriage 120 and the driving line.

  130. The conveyor assembly 74 further comprises a platform

  than upper bracket 138 which holds the support block

  122 against any vertical movement as opposed to

  124 and 126 while minimizing

  transverse forces on the training line 130.

  The support block 122 defines a passage 140, preferably rectangular, which functions as a linear bearing for a horizontal slide 142. The support block 122 also defines a slot 144 whose longitudinal axis is parallel to the axis of translation of the slide 142 in the passage 140. A spring latch pin 146 is disposed in the slot 144 and attached to the slider 142. A second spring latch pin 148 is attached to the support block 122 at the opposite end of the elongated slot 144. A tension spring is placed between the balusters 146 and

  148 and recalls the slide 142 and the various elements

  associated with the opposite of the central part of

the conveyor assembly 74.

  Figures 5, 6, 7 and 8 show that a guide block 156 is disposed above the support block 122 and fixed on it. In addition to providing a clearance for the tension of the spring 150,1st guide block 156 defines a passage

  rectangular 158 in which is disposed a horizontal bar

  Rectangular 160 rectangular. Inside the dwellings

  162 of maintaining springs in block 158 are provided

  two compression springs 164 which recall the bar 160 and a pair of rollers 162 disposed at each end of the bar towards the center of the conveyor assembly 74. During part of the circulation of the machining station 120 around the conveyor assembly 74,

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  The rollers 166 engage a vertical surface 168 on the

  upper plate 170 of the conveyor assembly 74 and guide-

  dent the machining carts 120 around the set

  conveyor 74. On the upper surface of the guide block

  156 is secured to a guide arm 174. On the inner end portion of the guide arm 174 is mounted a cam follower or follower 176. The pusher 176 is in contact with a vertical surface 178 on a pair of cams 180. irregularly shaped, fixed on the plates

  the top 178 of the conveyor assembly 74 in

  equidistant sidings of the sides and ends. The vertical surfaces 178 of the irregular cams 180 cooperate with the pushers 176 to guide and direct

  the positions of the machining carts 120 when they cir-

  around the conveyor assembly 74 near its

  end parts. This guidance by the irregular cams

  res 180 ensures a positive engagement of the collars 46 on

  the mandrinage stations 16 and 18 by the carriages

sinage 120.

  Figures 5, 7 and 8 show that the horizontal slide 142 is perpendicularly supported and fixed

  on a vertical bar 190. On the upper ends

  upper and lower of the vertical bar 190 are fixed two stirrups 192 and 194, respectively upper and lower. Each of the stirrups 192 and 194 comprises two rollers 196 and 198 arranged to rotate about vertical axes, spaced parallel. The two rollers 196 disposed on the upper yoke 192 exactly position the upper portion of the vertical bar 190 relative to the upper mandrinage assembly 16, by the juxtaposition and the bearing on the collar 46 fixed around the upper assembly 16 rotating mandrinage and the two rollers 198 disposed below the lower yoke 194 exactly position the lower portion of the vertical bar 190 relative to the chuck assembly 18 by the juxtaposition and rolling on the collar 46 disposed around the 'together

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-12-

  The position of the carriage of

  sinage 120 is thus determined and exactly referenced

  from above and below, relative to the position of the two upper and lower mandrel assemblies 16 and 18 respectively. According to FIGS. 5, 5A and 8, the vertical bar of the machining carriage 190 supports a machining station 200 to slide. The machining station 200 comprises a cam follower 202 mounted for turning and disposed beneath the block. 122. During part of the circulation of the trolley assembly 120 around

  the conveyor assembly 74, the pusher 202 engages a platform

  cam 204 secured by a support structure 206

  propriety on the exposed inside of the plate

  vertical 108. The cam plate 204 moves vertically

  the machining station 200 along the vertical bar.

  190 from a position coilincid with the lower portion of the vertical bar 190 as shown in FIG. 4, upwardly to the position of FIG. 8 in which the machining station 200 can machine a glass vial 210 held to rotate in one of the upper mandrel assemblies 16. The support structure 206 also assembles two horizontal cams 212. The cams 212 are fixed

  on the support structure 206, for example by means of

  threaded fasteners 214 which allow lateral adjustment. The function of the two cams 212 will be described by

the following.

  A stirrup structure 220 is articulated on the

  part of the substation of the machining station 200 near the bar-

  vertical re 190 by pivots 222. A cam follower

  224 is mounted to rotate about a perpendicular axis

  to the plane of the caliper structure 200, to the ex-

  end of the caliper 220 opposite to the machining station 200.

  A tension spring 226 mounted between the machining station and the end of the stirrup 220 on which the pusher 224 is mounted ensures the restoring force of the stirrup 220 in the clockwise direction. seen

  in Figure 8. The movement in the direction of the

  The time of a watch of the caliper 222 is limited and regulated by an adjustable stop 228 which may consist of a bolt of the current type disposed in a threaded hole with a locking nut. The rear part of stirrup 220 is

  truncated as shown in Figure 5 while the

  front tie of the stirrup shown in Figure 8 ends with two upper parallel support plates and

lower 230.

  As shown in Figures 8 and 9, the

  Supporting members 230 at the end of the yoke 20 engage a roller 232 which is mounted on a sliding assembly 234. The slider assembly 234 is maintained for low friction translation along vertical axes.

  by two linear ball bearings 236 which are

  behind two double cam parts 238. The pieces 238 therefore move vertically in response to the support

  pusher 224, with one or other of the cams 212.

  As shown in Figures 9 and 10, the position

machining unit 200 comprises a first assembly block which is

  250 comprising enlarged openings 252 by

  which threaded fasteners 254 can pass freely. Threaded fasteners

  254 are supported by corresponding threaded openings

  256 defined by a second assembly block

  258. Between the first and second mounting blocks 250 and 258 is interposed a relatively fixed plate 260 which forms a part of the body of the machining station 200 and on which is arranged horizontally a

  262. On the opposite sides of the fixed plate

  260, and held horizontally on the plate

  horizontal 262 are two rotating adjusting screws

  264 which are screwed into complete threaded holes

  264 and 268 respectively in the mounting blocks 250 and 258. When the securing devices 254 are stripped, each of the screws 264 allows independent and accurate adjustment of the vertical position of the blocks.

  adjustable mounting plates 250 and 258 respectively.

  In the maintained view of FIGS. 7, 8, 9 and 10, the

  first mounting block 250 vertically adjustable

  carries two sets of spaced bushes 270 which position and support so as to be able to rotate two parallel and spaced pivots 272. On each of the pivots 272, is mounted one of two pivoting arms 274. Approximately in the middle of the arms of lever 274 can rotate two knobs 276. Two symmetrical cam surfaces 178

  and obliquely oriented are arranged between the knurls

  276 and the ends of the lever arms 274 furthest from the pins 272. The two cam surfaces 278 are aligned and cooperate with complementary oblique cam surfaces 280 defined by the upper parts of the two double cam parts 238. When the parts double cams 238 move vertically upwards, the lever arms 274 and consequently the wheels 276 that they support move apart, and vice versa. The minimum center-to-center distance of knurl 276 can be adjusted by a set screw 282

  who taps near the end of one of the arms of the-

  274, which is maintained for example against any rotation produced by vibration by means of a spring 284. A similar threaded stop 286 with locking nuts 288 is aligned with the adjusting screw 282. A tension spring 290 mounted between the ends of the lever arms 274 opposite the pins 272 provide the return force by which the lever arms 274 and

  the wheels 276 come closer to one another in

  in response to the descent movement of the double cam parts 238. According to FIGS. 7, 9 and 10, the second block of

  adjustable mounting 258 has two sets of socket

  300 which position in rotation and support two parallel and spaced pivots 302. One of two horizontal and spaced lever arms 304 is mounted on the upper end of the pivots 302. On each of the

  lever arm 304, almost at its horizontal center

  tal, is mounted one of two symmetrical segments of man-

  306 semi-cylindrical shaft. Each of the mandrel segments 306 preferably has a radially outer lip or bead 308 which can be used to form a groove discharged into the neck of the vial 210. The mandrel segments 306 are removably mounted on the lever arms 304 by fixing devices, for example screws 310. Preferably,

  one of the screws 310 has a longer length which facilitates

  you access, because of the limited space in which

  it is near the vertical bar 190 (see

Figure 8).

  As shown in FIGS. 8 and 11, the lever arms 304 each define a respective one of two obliquely oriented cam surfaces 312 which are parallel and which cooperate with complementary cam surfaces 314 disposed obliquely on the double cam members 238. As shown in FIG. 8, a vertical upward translation movement of the cam members 238 displaces the chuck segments 306.

  towards each other and vice versa. Parts of ex-

  the end of the lever arms 304 furthest from the pivots 302 comprise an adjustment mechanism 320. The adjustment mechanism 320 comprises a threaded piece 322

  between the respective lever arms 304, free of sliding

  at least one of the lever arms 304. The threaded part 322 has an adjustable locking device 324. A compression spring 326 disposed coaxially around the threaded piece 322 assures that the mandrel segments 306 move laterally at the same time. opposite one

  the other to the maximum extent permitted by the

  setting 320 when the cam surfaces

  312 and 314 allow.

  The operation of the machining station assembly 50 will now be described with reference to the figures

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  -16- 6 to 11. As already indicated, the sets of

  upper and lower mandrels 16 and 18 respectively

  are turning on their parallel vertical axes and es-

  The conveyor assembly 74 supports and drives the nine carriages 120 on each of the two post sets 50.

  machining in such a way that the linear velocity of

  chuck assemblies 14 and 16 and the assemblies

  trolleys 120 be the same when they engage and move along a common arc on a part

  of their journey. It appears that the sets of chains

  riots 120 are articulated relatively freely on

  the training ladder 72 and therefore the pos-

  200 of the machining carts supported on the machining carriages 120 can be and are positioned exactly by

  compared to the upper and lower mandrel assemblies

  16 and 18 respectively by the turnover of

  upper and lower rollers of rollers 196 and 198 with

  the collars 46 associated with the mandrel assemblies

  16 and 18. When the engagement between the machining carriages 120 and the mandrel assemblies 16 and 18 is ensured, the cam follower 224 engages the first one.

  of the two cams 212 which pivots the caliper 220, displaces

  vertically the double cam parts 238, trans-

  the wheels 276 are moved away from each other and tightens the chuck segments 306. At approximately the same time, the cam follower 202 engages the cam 204.

  vertically upward the

  200, in a position suitable for forming the neck of the glass vial 210 maintained in the assembly

  16. When the sets of man-

  16 and 18 and the machining trolleys

  nu to move along the common arc, the first of the two cams 212 goes down and the cam follower 224,

  caliper 220, the double cam parts 238, the knurls

  276 and mandrel segments 306 are released and

  return to the positions shown in Figure 8.

  In these positions, the knurls 276 machine the outside neck of the bottle 210 and the mandrel segments 306,

  including the protruding parts 308, machine the inte-

  the neck of the bottle 210, including the formation of a groove if desired. It is understood that

  the precise profile of the neck of the bottle 210 can be modified

  by appropriate changes in the profiles of the

  276 and mandrel segments 306 to obtain the desired shape. At the end of the machining of the bottle 210, the mandrilling assemblies 16 and 18 and the carriage

  machining 120 continue to move together

  corn. The elements of the machining station 200 are extracted from the bottle 210, unlike the way in which they have penetrated. In other words, the cam follower 224 is again actuated by the second of the two cams 212, so that the chuck segments 306 are narrowed and the wheels 276 move apart. In this position, the machining station 200 is lowered from the engagement with the bottle 210 by the descent of the cam 204 and by the

  cam follower 202 which follows it. The descent of the

  cam follower 212 releases the caliper assembly 220 and the

  The letters 276 contract while the chuck segments 306 move apart. Of course, the machining carts 120 continue to circulate around the set

conveyor 74.

  The extended circulation path and the fact that the machining stations 200 perform the functions

  machining for about a third of the time

  an extended cooling period of which

  is a better product. The ratio between the machining stations 200 and the pairs of the mandrill assemblies 16 and 18 which is 2: 1 was found to be optimal for both

  cooling time and production rate.

  Using the upper and lower pairs of the rollers 196 and 198 to engage the respective collars 46 associated with the upper mandrel assemblies

  and lower 16 and 18 respectively improves the alignment

  The bottleneck shaping elements of the machining station 200 and makes it possible to obtain a better product. Similarly, the adjustment screws 282 associated with the knurls 276 and the adjustment mechanism 220 associated with the chuck segments 306 allow precise adjustment of lateral translation, which can be done while the machine is running, which makes it possible to obtain Improved performance of the machine 10 as well as a better product. The mandrel segments 306 secured by the screws 310 can also be easily disassembled and replaced by other mandrels with different profiles. For example, mandrel segments having

  a smooth vertical wall thus forming an inter-

  complementary smooth (without throat) can

can be used.

  Finally, it should be noted that the adjustment of the posi-

  vertical operations of the lever arms 274 and consequently

  That wheels 276 and lever arms 304 and therefore mandrel segments 306 can be made simply and quickly by releasing the screws 254 and independently adjusting the appropriate one of the screws 254 until the desired vertical position rollers

  276 and mandrel segments 306 is reached. This regulation

  glage can also be done while the machine

works.

  Of course, many modifications can

  can be made to the described and

  glossy as a non-limiting example without going out

  the frame or the spirit of the invention.

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Claims (24)

  1. Machine intended to machine at the end of the regions   neighboring prefabricated articles made of thermoplastic   such as pre-made glass articles, which are   characterized in that it comprises a rotating carousel (14) with a plurality of upper and lower vertically aligned pairs of upper and lower mandrel assemblies (16, 18).   disposed against the periphery of said carousel and   several vertical axes of rotation, each of said mandrel assemblies comprising a   collar defining an axis coaxial with said axis of rotation   respectively, a device for rotating said carousel and said chuck assemblies, at least   a machining carriage (120) positioned near the perimeter   said carousel, said machining carriage comprises   a drive gear (58) and a free gear (62) rotatable on said carriage, a   chalne (60) disposed around said toothed wheels of   processing and free, and several machining stations (200) attached to said chalne for movement along the periphery of said machining carriage, said plurality of   machining stations each comprising a pair of   higher and lower levels to engage one   tif said collars on said mandrel assemblies   upper and lower, a first pair of   voting, each arm having a respective thumbwheel (276) attached thereto, a second pair of swivel arms each having a mandrel segment (306) attached thereto, and a cam device disposed near said first and said second pair of arms for pivoting said first pair of arms apart while pivoting the second pair of arms to bring them together, and pivoting said first pair of arms to bring them together by pivoting the second pair of arms to dismiss them.   2. Machine according to claim 1, characterized   in that each of said pairs of devices -20- 2559? 5?   of higher and lower commitment consists of two pebbles.   3. Machine according to claim 1, characterized   characterized in that said carousel (14) has 36 pairs of vertically aligned mandrel assemblies (16, 18).   4. Machine according to claim 1 or 3,   characterized in that each machining trolley comprises nine said machining stations (200).   5. Machine according to claim 1, characterized   in that said carousel frame is disposed   to turn around a stationary structure and the-   said machining trolley comprises a device for   pivoting said carriage on said structure stationary.   6. Machine according to claim 5, characterized   in that it further comprises a device   drive shaft (32) for transferring the   energy of said device rotating to said carriage, the axis of   rotation of said drive shaft device   cidant with the pivot axis of said device pivoting attachment.   7. Machine according to claim 5, characterized   in that said pivoting carriage comprises a provision   (90) for selectively raising and lowering said   machining trolley with respect to said housing structure dre.   8. Machine according to claim 1, characterized   in that said machining trolley comprises a first   first cam device (204) for raising and lowering said machining stations and a second cam device (212) for translating a translation to said cam device disposed near said first and second pairs of arms when said machining station moves   following the periphery of said machining carriage.   9. Machine according to claim 1, characterized   in that said first pair of said pivot arms 2559757 -   Both and said neighboring cam device comprise   oblique surfaces arranged in a complementary manner, la-   said second pair of pivoting arms and said adjacent cam device comprising complementary obliquely disposed surfaces and said pivot axes of said first and said second pair of support arms and said axes of said wheels and said segments of said mandrel being parallel.   Machine according to claim 1, characterized   characterized in that said first pair of swivel arms and said second pair of swivel arms comprise associated devices for independently adjusting their   vertical positions in relation to audits of respective swimming.   11. Machine intended to machine at the end of the   neighboring regions with pre-made articles made of   moplastics, characterized in that it comprises a rotating carousel (14), a plurality of upper and lower aligned mandrel assemblies (16, 18)   vertically arranged around the periphery of the car-   roussel and defining several vertical axes of   tation, a collar arranged around each of the said   shanks, said collar defining an axis   that coincides with the respective vertical axis, a   driving task for rotating said carousel and for synchronously rotating each of said   pairs of upper and lower mandrel assemblies   at least one machining carriage (120) arranged   from the periphery of said carousel, said machining carriage   comprising a drive gear (58) a free gear (64), a gear (60) disposed about said drive gear and said gear   toothed, several machining stations mounted on the-   said chalne and a device for rotating said   toothed wheel and to move said pos-   machining stations around said carriage, said machining stations each including a pair of devices for engaging said collar arranged around a set   upper mandrel of a pair of set of man-   vertically aligned die and a vertically aligned pair of devices for engaging said collar disposed about a lower mandrel assembly of   said pair of vertically aligned mandrel assembly   first pair of pivoting devices, each   that pivoting device being a device for supporting   a respective rotating wheel (276), a second   pair of pivoting devices, each pivoting device   both a device for supporting a segment of a mandrel (306) and a device for rotating said   first and second pair of a pivot device   so that said knobs can be selectively advanced toward each other to form the outside of a neck of an article while said chuck segments can be moved away from each other to form the inside of a neck of an article.   Machine according to claim 11, characterized   in that said device intended to   said first and second pairs of   swiveling systems includes a sliding structure with   oblique cam surfaces that engage and   vote the said first and the second tives.   Machine according to claim 11, characterized   in that said chuck segments comprise   each a projecting part to form a region   trante in the inner part of a bottle neck.   Machine according to claim 11, characterized   in that it further comprises a fixed frame and a pivoting mounting device of said carriage on said stationary housing, said pivoting mounting device defining a pivot axis.   Machine according to claim 14, characterized   in that said device rotating said driving gear and circulating said stations   around said carriage has at least one shaft of   treatment whose axis of rotation coincides with the said pivot axis.   Machine according to claim 11, characterized in that said carousel (14) comprises thirty six of said pairs of chuck assemblies (16, 18).   vertically aligned, each of said carriages   swimming comprising nine of said machining stations (200).   Machine according to claim 11, characterized   in that said machining trolley comprises a   first cam device for raising and lowering   said machining stations, a second cam device for imparting a translational movement to said device rotating said first and said second pair of pivoting devices and said pivot axes of said   said first and said second pair of arms   and said axes of said wheels and said segments   chuck elements being parallel.   Machine according to claim 11, characterized   in that said first and said second pair   pivoting devices are mounted in   to adjust the vertical position of the   said first and second pivoting device by   report to said respective machining station.   19. Machine according to claim 1, characterized   in that each of said machining stations (200) de-   finishes a reference machining axis, each of said   upper pair and said lower pair of   commitment devices being placed at a distance of   the uniform of said reference machining axis, so   that said reference machining axis and said axis of rotation   said joint chuck assemblies when   said upper and lower engagement devices   are in contact with the said collars of the said weights of mandrinage.   Machine according to claim 19, characterized 255975?   In that said two knobs are arranged to rotate on parallel axes equally spaced and parallel to said machining reference axes, said mandrel coinciding with said machining reference axis and extending along its length.   Machine according to claim 11, characterized   in that each of said plurality of machining stations   ge (200) defines a reference machining axis and said   pair of devices engaging said collar disposed   turn of said upper mandrel assembly are equi-   remote from said reference machining axis, and said pair of devices for engaging said disposed collar   around said lower mandrel assembly is equi-   remote from said reference machining axis.   22. Process for shaping the part of   bottleneck of a glass flask or similar article,   characterized in that it consists essentially of   produce an article in a machinable condition, at   high temperature, to prepare a pair of spindles   These are arranged to rotate on a reference axis   vertical joint, a collar being attached to each of the   said mandrels and being arranged coaxially with said vertical reference axis, to rotate said article   around its longitudinal axis in one of the said man-   drills, to provide a machining station defining an axis   machining reference and comprising two pairs of   reference lines, each of said two reference rollers   A chuck collar is disposed to engage a respective one of said chuck collars, a segmented chuck being aligned with said machining reference axis and a pair of chucks.   the wheels being arranged to rotate on parallel axes   parallel to said mandrels so that each of said two reference rollers engages a respective one of said collars, and that the vertical reference axis and the axis machining reference coincident, to introduce said chuck segments in the article -25-   and forming the neck portion of the article by engaging   ant to the outside of the article with said wheels while spacing said chuck segments and engaging   inside the article with said segments of man- drin spread.   23. The method of claim 22, characterized   in that said longitudinal axis of the article and the machining reference axis coincide during the phase bottleneck training.   24. The method of claim 22, characterized   in that it further comprises tightening said chuck segments and disengaging said chucks from commitment with said article.