DE1604667C - Method and device for Ent burrs made of thermoplastic material bottles od the like hollow bodies - Google Patents

Description

The invention relates to a method and a device for deburring thermoplastic Plastic-made bottles or similar hollow bodies, which after manufacture by inflation of a parison in a split shape at least one in a diametrical plane on one side lying: have a ridge, the bottles by means of a conveyor to a punching device be transported, which has a cutting and a knife plate that are relative to each other and to der.Flasche are power-driven movable and their cutting edges with the contour to be deburred match, and the ridge in the aligned position of the cutting edge of the cutting plate Bottle in a position outside of its conveying plane directly along the surface of the The bottle is separated and the bottle is then conveyed further.

The bottles made of thermoplastic material can be extruded and blown in a known manner be made and provided with a handle. This creates on the neck section and if necessary, a burr is removed on the handle of the bottle by closing the blow mold halves must become.

Numerous attempts have been made to provide devices for removing burrs which but not fully satisfied. The experience has shown that in the plastic bottles produced by the extrusion blow molding process, especially if these have a handle, dimensional deviations occur, mainly in the area where the burr formation occurs, which in the known deburring devices leads to unacceptable amounts of rejects led, because when using punching devices the alignment of the ridge lines Bottle was too imprecise to the cut edges of the cutting plate or the knife plate. For this reason it was common practice to remove the burr by hand.

In the known method from which the invention is based, the device used there a conveying device, with which the bottles received lying on it step by step in the Conveyor track arranged punching device are fed. The punching device has a cutting and a cutter plate that is horizontally positioned and powered relative to each other and to the bottle are movable and whose cutting edges match the contour to be deburred. the Cutting insert is arranged above and the cutter insert is arranged below the conveyor. To remove the With the ridge attachment, the bottle with the ridge attachment is aligned with the cutting edge of the cutting plate The cutting plate is lifted off the conveyor and moved against the cutting plate in a power-driven manner. After cutting off the ridge, the knife plate with the bottle lowers and places it on the Conveyor from which it falls off at the end. An exact alignment of the ridge approach to the Schniüplatte does not appear to be possible with this known device, so that the aforementioned Defects comes.

Another known device is used for cutting out or punching out hollow bodies such as Bottles made of plastic material, which are preferably made of two superimposed welded at the edge Films are made by inflation. The hollow body is in one of the outer contour of the hollow body Corresponding tub centered added, the side walls of the tub a cut plate enforce movably. The welding edge of the hollow body is between the upper edges of the Clamped the tub and a movable cutting tool and then pushed it through the cutting plate, wherein the surface of the welding edge clamped between the trough and the cutting tool the finished punched hollow body remains. A separation of the welding edge immediately along the wall of the hollow body is not possible, since then the two halves of the hollow body are no longer connected would have with each other. In contrast, a hollow body is assumed according to the invention, which is produced from a parison in the extrusion-blow molding process, with the resulting burr immediately is cut off at the hollow body contour, so that a smooth surface is created.

It is also a device for the production and deburring of hollow bodies, in particular bottles, made of plastic material that is blown from an extruded, clamped between two mold halves Strand are produced, known, in which a hollow mandrel in the end forming the bottle neck is introduced through which the pressure medium is blown to expand the strand. It is one Device provided with which the ridge forming on the neck and bottom of the bottle of the at least partially received in the mold bottle is removed. One with the shape The invention does not provide for a combined deburring device.

Furthermore, a method and a device for the production of bottles from thermoplastic Plastic known in which an eqtruded tube end is enclosed between two movable mold halves and expanded by a hollow mandrel introduced into the neck part by means of a pressure medium will. Excess material forms on the part that forms the neck of the bottle Bottle when closing the mold halves a burr, which is removed by the fact that the bottle neck forming part of the mold from rotatably mounted around the longitudinal axis of the bottle in the mold halves There are parts that are rotated around the longitudinal axis after the blow-molding process is completed before the mold is opened, thereby removing the burr from the bottle neck shear off. With this type of burr removal, grooves and streaks can appear on the surface. In this case, too, the deburring takes place in the form, which is not the case with the subject matter of the invention the case is.

The invention is based on the object of the method for deburring from thermoplastic Plastic produced 'bottles or similar hollow bodies a clean and precise separation of the ridge along the surface of the object even with the inaccuracies that normally occur to allow, wherein the contour of the ridge line can have any shape, and a device to create the implementation of the procedure.

To solve this problem, the invention proposes that the bottle on the conveyor is rotated about its longitudinal axis in a position in which the ridge approach an angle zq dei • Forms the plane of the cutting plate, and during its

Movement from the conveyor to the cutting plate when you hit the same in the aligned with the ridge to the cutting plate and on this adjacent position is rotated.

According to this method, the hollow body to be deburred aligns itself with its ridge line exactly after the cutting edge of the cutting plate by turning it into the recess of the cutting plate will. The cut is made along the surface without cutting into the Wall of the hollow body to cause scrap if inaccuracies in the shape of the hollow body should occur.

Another method feature of the invention, which is essential for the precise alignment of the ridge approach Contributing to the cutting plate is that the bottle to align the ridge with the cutting plate is moved axially at the same time as it rotates.

If bottles or hollow bodies are to be deburred, which have burrs on both sides in the diametrical plane, whose starting lines on both sides, relative to the axis of the bottle, can run asymmetrically, is more advantageous Continuing the process, always place the bottle in the ridge level with the same ridge in oriented in the same direction, whereupon the ridge on one side is in the punching position Aligned bottle cut off and then after releasing and realigning the bottle the ridge on the other side is cut off. The separate deburring of both sides of the Bottles and their special alignment with respect to the cutting plate guarantee a clean separation of the burr immediately along the approach of the same.

The device for carrying out the method in the case of one-sided burr formation is provided with a conveying device provided that transports the bottles to a punching device that has a cutting and a Has knife plate which are movable relative to each other and to the bottle and the power driven The cut edges match the contour to be deburred is characterized by:

45

a) a horizontal guide, along which the cutting plate and the knife insert, which are arranged vertically are power-driven movable between a release position and a deburring position are;

b) a support plate for freely rotatable about a vertical axis in the deburring position the bottles, which by their own weight and the weight of the bottle just overcoming lifting device between an upper and a lower limit position is displaceable, wherein the end face of the in the deburring position located cutting plate has a distance to the axis of rotation of the support plate, which in essentially corresponds to half the thickness of the ridge attachment;

c) a conveyor belt of a conveyor device, with which a bottle in a lateral distance Can be moved to the ready position having the support plate, in which the bottle axis and the Support plate axis lie in a common vertical plane that is perpendicular to End face of the cutting plate extends;

d) devices arranged on the conveyor system, with which a bottle located on it can be aligned so that the ridge base level forms an acute angle to the face of the cutting plate;

e) a driven transfer device that can be moved horizontally by means of motors and piston rods, has the plates with which the bottle in the ready position is loose can be detected and displaced into the deburring position, the bottle through the stop their ridge approach during their movement into the deburring position on the face the cutting plate is rotated around its axis, while at the same time the lifting device the support plate is actuated, and thereby the bottle under a rotary and vertical movement aligned with its ridge line to the cutting edges of the cutting plate and in the attachment of the Ridge approach ah whose face is moved.

In order to carry out the method in the case of a burr on both sides, a further development of the device provides that a punching device is provided for each ridge on both sides of the bottle, each one have a common guide for the associated cutting inserts and cutter inserts, and that both Punching devices are independently operated bar.

In order to ensure a clean separation of the burr, it is also provided that the knife of the cutter plate or plates on the side facing away from the bottle surface forms a cutting edge Have bevel, the corresponding inclined surfaces of the cut edges of the cutting plate or plates intervene. .

To allow the device to be adapted to different bottle shapes and sizes, is provided in a further training that the conveyor is a standby position of the Bottle-defining locking device with motors, the universal device and the support plate in one Trained as a work table adjustable in height on columns guided lower frame and the punching device are arranged on a height-adjustable upper frame guided on the columns, and that the upper section of the conveyor belt that feeds the bottles, the work table and the one opening in the Work table-penetrating support plate lie in a common plane from which the support plate can be lifted is.

Furthermore, the end positions of the cutting plate or plates are controlled by a cam drive with a motor and cams can be determined.

About those arriving in random positions on the conveyor belt, some of them directly one behind the other To feed bottles individually to the locking device that determines the readiness position, it is provided that a separating device at the outlet end of a bottle neck between receiving first guide is arranged and two arranged at a distance in the conveying direction Has pressure medium-operated motors, the piston rods alternately in the path of movement of the Bottles can be pushed, and that the standby position determining, in the conveying direction behind the separating device arranged locking device at the exit end of one of the

Bottle neck is arranged between the receiving second guide and the piston rods of their alternately into the two pressurized-medium-operated motors, which are arranged at a distance in the conveying direction Movement path of the bottles are slidable.

In a further embodiment of the device for aligning the ridge approach it is provided that between the motors of the separating device two the ridge on both sides of the bottle neck nozzles acting on compressed air are arranged in the opposite direction.

Here, a preferred embodiment provides that between the two receiving the neck Guides a light barrier directed at right angles over the movement path of the bottles with a Light source and a photocell is provided with which a scanning device with a light source and a photocell for determining the sides of bottles with an asymmetrical ridge on both sides is controllable, which in turn controls a pressure medium-operated motor, the piston rod in the Movement path of the bottle attacking the ridge on a certain side and thereby the bottle can be advanced rotating about its axis.

Another feature that is also related to the proper alignment of the ridge base in the standby position provides that between the motors of the standby position determining locking device a ridge approach on one side of the bottle with compressed air, turning the burr attachment plane into the desired angle plane to the face of the cutting plates Nozzle is arranged.

The cutting plate or cutting plates and the cutting plate or cutting plates are expediently interchangeable Fastened tool heads, which guided on parallel extending guides designed as rods and can be operated by motors.

The subject matter of the invention is now based on a. Embodiment and the drawings described. It shows

1 shows a side view of the degassing device,

F i g. FIG. 2 is a view of the FIG. 1 shown device when looking from the left side of Fig. C

F i g. 3 is a top view of the FIG. 1 shown device,

F i g. 4 shows a horizontal section along line 4-4 of FIG. 2,

F i g. 5 is a diagrammatic partial representation of details of the cutting plates of the punching device;

6 shows a diagrammatic partial representation of details of the cutter insert,

F i g. 7 shows a partial section along line 7-7 of FIG. 2 to illustrate the interaction of the ridge exhibiting part of one side of the bottle with the corresponding cutting plate,

FIG. 8 shows a section corresponding to FIG. 7 for Representation of the interaction of the part having the ridge with the other side of the bottle the corresponding cutting plate,

F i g. 9 a further partial section along line 9-9 of F.i g. 7,

Fig. 10 is a partial section along line 10-10 of Fi g. 9 to show details of the cutting crifies between the knives of the knife plate and the cutting edges of the cutting plate,

11 is a schematic plan view of the device for aligning the bottles on yours. Transport to the in Fig. 1 shown device, FIG. 12 is a schematic side view of the device shown in FIG. 11,

Figures 13a and 13b are simplified plan and views, respectively the deburring device for displaying the positions of the parts when a bottle is arranged in the ready position with respect to the punching device,

14a and 14b simplified top and views of the device according to FIGS. 13a and 13b for Representation of the positions of the parts when the bottle is captured in the ready position for transfer the same,

Figures 15a and 15b are simplified top and bottom views the device of Fig. 13a and 13b to show the positions of the parts after Transferring the bottle to the punching position,

Figures 16a and 16b are simplified top and bottom views the device according to FIGS. 13a and 13b for displaying the positions of the parts at the moment the ridge separation from the side of the bottle that has the handle to be separated,

FIGS. 17a and 17b simplified top and bottom views of the device according to FIGS. 13a and 13b to show the positions of the parts at the moment the ridge is separated from the other Side of the bottle.

The device of FIGS. 1 to 4 comprises one Frame 30, which includes four vertical columns 32, which are supported by various cross braces 34 or some other rigid framework near the lower end of the pillars 32 are connected.

A conveyor device 36 with a driven conveyor belt of known design that feeds the bottles B to be deburred is mounted in such a way that its upper or supporting strand 38 passes between the columns 32. The deburring device is arranged on the pillars 32. The upper run 38 of the conveyor belt moves from right to left in FIG. 1 and from left to right in FIG. 3 and 4.

In a selected vertical adjustable and lockable position, a lower frame 40 is on the Columns 32 guided, which can be clamped in the selected position by clamps 42. It will now in particular to the F i g. 2 and 4 are referred to. The lower frame 40 comprises two side parts 44, which extend transversely between the upper and lower run of the conveyor belt. On each side of the Conveyor belt vertical plates 46 are attached to the side parts 44 that the conveyor belt between to lock myself in. On one side of the conveyor belt is a first horizontal work table 48 on the Plate 46 attached. The work table 48 is stiffened by a vertical rib 52 (Fig. 2) which is attached to the Plate 46 and the work table 48 can be welded. On the opposite side of the conveyor belt a slightly smaller horizontal plate 54 is attached in a similar manner, which also has a stiffening rib 56 has.

Fig. 2 shows that the plate 54 with a circular

. shaped opening 58 is provided by a circular Support plate 60 is interspersed with play. The support plate 60 is at the end of a piston rod 62 a pneumatic motor 64 of a lifting device attached, the cylinder for example by

a retaining bracket 66 is detected by the piston rod 11.0 of the motor 102, which piston rod is driven firmly with the reinforcing rib

56 is connected. The support plate 60 can be turned around.

the vertical axis of the piston rod 62 freely rotating the arrangement of a bottle B in the ready. A roller bearing 68 is used for this, with the shaft position in which it is supported by the motors 70 and the support plate 60 on the piston rod 62 and the associated components of the relocating device. can be detected, is controlled by the pneumatic

The tops of the work table 48, the plate see motor 104 determines which on the work

54 and the upper run 38 of the conveyor belt are table 48 is arranged in such a position that

arranged in a common horizontal plane one of the piston rod 112 of the motor 104

net. The work table 48 and the plate 54 carry io gripped bottle B aligned with the transfer device.

each cylinder of two pneumatic motors is.

gates70 and 72. The piston rod 74 of the motor On the pillars 32 is above the lower frame 70 carries at its outer end a perpendicular mens 40 a punching device 120 perpendicularly extending plate 76, the two out of each other vertically adjustable. Fig. 3 shows the punching device spaced-apart horizontal plates 78 to 15 120, which carries from a rectangular frame with anErquisition of the bottle B , the recesses 80 formed or rigidly connected end walls 122 have the shape of that of the bottle B and side walls 124 as well as with corresponds to vertical sockets, as best shown in FIG. 4 consists of 126, which are and is provided at each corner. The piston rod 82 of the motor 72 is also slidably guided on the pillars 32. The punching a vertical plate 84 and two horizontal devices 120 are at a predetermined height on plates 86 for gripping the bottle B, which can be adjusted in sliding columns 32, namely by two vertical ways, have a recess 88 like the corresponding threaded spindles 134, plates 78 on the piston rod 74 that speak the threaded holes. The screw-thread bottles B have a circular cross-section, and the counter spindles 134 are rotatably mounted at their lower ends in recesses 80 and 88, which are located opposite the housing, and which in a certain height correspond to the corresponding diagonally opposite diagonally opposite sides of the circular circumference of the bottle B completely one. The plates 76 and 78 are fixedly arranged on lowing columns 32. Fastened between the two rods 90 which are slidably guided in bores 30, housings 138, each one of plates 92 and 94 extends horizontally. A like diagonally extending drive shaft 140 with a training comes in the plates 84 and 86 of the handwheel 142. In each housing 138 a gear motor 72 is for use. The actuation of the Mo arranged to rotate through the rotation of the drive gates 70 and 72 is synchronous so that a bottle B 35 spindles received in the shaft 140 by means of the handwheel 142 rotates in the same direction. In this between the position and the manner shown in FIG. 4, the punching device 120 can be displaced in the height of the upper run 38 of the conveyor belt. can. The piston rods 74 and 82 can as shown in FIG. 3, the punching device also has to be withdrawn separately in order to release the vent 120 in the exemplary embodiment two horizontal 38 of the conveyor belt extending alleles apart on the upper strand 40 in the path of movement of the bottles B and the movement of pairs of guides designed as rods, To allow an incoming bottle B from the left into a right and a left guide 150 or an alignment with the motors 70 and 72. 152. The guides 150 and 152 are mounted in the side motors 70 and 72 and the plates 76, 78 and 45 mounted on their piston walls 124 of the punching device 120 and rods 74 and 82, respectively, extend across the conveyor belt . On the 84, 86 represent a horizontal transfer device right guide 150 are right tool heads 154, which slide the transfer of the bottles B from the top to receive a cutting plate 202 and 156 to the ren run 38 of the conveyor belt on the support plate 60 receiving a cutter plate 220 causes, wherein the vertical axis of each bottle B, the tool head 156 is in one of the aligned so by means of a to coincide with the axis of rotation 50 side walls 124 mounted pneumatic motor support plate 60 on the piston rod 62 together 158 whose piston rod 160 directly with falls to him. is coupled, on the guides 150 back and forth

On the lower frame 40, several can be pneumatically displaced. In Fig. 3 is the piston .matic motors 100, 102, 104 arranged as a rod 160 in its fully extended position, and stops for monitoring the movement of 55 the tool head takes the maximum at the factory bottles B in the Serve standby position, in the tool head 154 approximated position.
they can be detected by the transfer device. Fig. 3 also shows the tool head 154 in NEN. The motor 100 is fastened on an extension part of its position as close as possible to the tool head 156, 106 of the lower frame 40 (FIG. 4). The displacement of the tool head can be pushed with its piston rod 1Ö8 into the movement 60 154 on the guides 150 by a cam of the conveyor belt driven by the path of the bottles B on the supporting strand 38 of a pneumatic motor 168. In this arrangement of sticks. 2, 3 and 9 show two development, the piston rod 108 prevents the further adjusting rings 160 a, which are clamped on the guides 150 of the incoming bottles B by the fixed movement, as well as two on the guides on the conveyor belt. When the piston rod 65 is withdrawn, the compression springs 162, which are arranged to resiliently move out of the path of movement of the bottles B on the loading of the tool head 154 to the left conveyor belt, can be the same as shown in Fig. 4 in Figs. 2 and 9 on the adjusting rings 160a , move to the right until they are supported by the.

As shown in FIG. 2, a cam 164 is pivotable on one attached to the side wall 124 Journal 166 mounted. On a bracket 172, which is also attached to the side wall 124, is a motor 168 is pneumatically mounted so as to be pivotable about a pin 170. The piston rod 174 of the Motor 168 is articulated on cam 164 with a pin 176. The cam 164 has two edges 178 and 180 extending at right angles to one another and defined by an arcuate section 182 ″, the edge 178 being at a greater distance from the pin 166 than the edge 180.

When the piston rod 174 of the motor 168 is in its fully retracted position, as shown in FIG. 2, the cam 164 assumes a position in which the edge 178 on the Rear side 184 of the tool head 154 rests. When the piston rod 174 of the motor 168 is completely is extended, the cam 164 is about the pin 166 by 90 ° counterclockwise from the in Fig. 2 is pivoted and rests with the edge 180. the back 184 of the tool head 154 at. In this position, the tool head 154 is from the position shown in FIG. 2 position shown by the compression springs 162 on the tool head applied force moves to the left.

On the left guides 152 are left tool heads 186 and 188 for receiving cutter inserts sliding bearing. The left tool head 188 is just like the right tool head 156 reciprocally driven by a pneumatic motor 190 mounted on one of the side walls 124 and the piston rod 192 of which is directly coupled to the tool head 188.

The tool head 186 can slide on the guide 152, but only for that purpose serves him in a chosen division on the guide 152 set. An adjusting screw 194 is located between the side wall 124 and the tool head 186 arranged, which is used to adjust the tool head 186.

Fig. 5 shows the tool head 154 with a downwardly extending mounting plate 196, which can be stiffened by ribs 198. On the surface a right-hand cutting plate carrier 200 is detachably fastened to the fastening plate 196 by means of screws, see above that the tool head 154 is suitable for receiving various cutting plates 202.

As can be seen from FIGS. 1 to 4, the bottles B have a round cross-section and have a tapering neck section 5 on which a handle H made in one piece with the bottle B is arranged. During the production of the bottle B , a ridge F arises, which protrudes on the inside and outside of the handle H and from the neck section S of the bottle B on the side diametrically opposite the handle //.

As shown in FIG. 5, a cutting plate 202 is attached to the right tool head 154, in the end face 204 of which a recess 206 corresponding to the handle H is incorporated, in which one half of the handle is received when the burr F rests on the end face 204. The purpose of this recess 206 is to allow the handle // to move inwardly beyond the face 204 so that the cutting edges 208 of the cutting plate 202 can capture the ridge F directly on the surface of the bottle B along the ridge lines. The recess 206 forms a cut edge 208 corresponding to the outer contour of the handle H and a cut edge 210 corresponding to the inner contour of the handle H.

The left tool head. 186 has a downwardly extending mounting plate 212, which for Attachment of a left cutting plate 214 is used. The cutting plate 214 has an end face 216 which

ίο is limited by a cutting edge 218, the shape of the ridge line on the side of the handle // opposite the. Shoulder portion of the bottle B corresponds.

F i g. 6 shows the right tool head 156 carrying a right cutter insert 220. On the face the cutter plate 220 is a knife 222 for the outer handle contour and a knife 224 for the inner handle contour attached, which together with the cutting edges 208 and 210 of the cutting plate 202 act, as can be seen from FIG. The left one Tool head 188 carries a left knife plate 226, on the face of which a knife 228 is attached, the shape of which corresponds to the cutting edge 218 of the left cutting plate 214. The knives 222, 224 and 228 are made of strip steel and have a cutting edge that is bevelled on one side; they are means Screws 230 attached to the corresponding cutter plates 220, 226, which is most evident on the knife 228 in FIG. 6 is shown. Stop bars can be placed on the end faces of the cutter inserts 220 and 226 232 be attached to the depth of engagement, the knife 222, 224, 228 in the cutting plates 202, 214 to limit.

10 shows that the cutting edges 208 and 210 of the cutting plate 202 are chamfered in accordance with the bevel of the cutting edges of the knives 222 and 224. When the knives assume the position in which the burr is severed, the cutting edges of the knives practically protrude beyond the burr attachment line and the end faces 204 of the cutting plate 202, as can be seen from FIG. 10, so as to shear the burr cut off from bottle B.

The end faces 204 and 216 of the cutting plates

202 and 214 lie in a plane extending at right angles to the longitudinal direction of the guides 150, 152. In some cases, the cut edges 208, 210, 218 may protrude slightly beyond the end faces 204, 216. The main requirement when inserting the bottle B into the punching device is that the vertical plane of the end faces 204, 216 of the cutting plates 202, 214 on which the burr rests is precisely defined. Cut edges 208, 210, 218 protruding beyond the end faces 204, 216 may be desirable in some cases if a relatively thick or blistered burr occurs.

The first step in aligning the cutting plates 202, 214 is to define the perpendicular ones Plane of the left cutting edge 218, which by. half the thickness of the ridge from the vertical Axis of rotation of the support plate 60 containing vertical plane must be set back.

The right end face 204 is then aligned with their tool head 154 so that the vertical plane of the cutting edges 208 and 210 lies in the same plane as the cutting edge 218 of the _lin: ken die plate 214 with the cam 164 in which g in F i. 2 is in the position shown. The scales

11 12

right or radial spacing of the cut edges 208 dimensions depend on the shape of the bottles B. In the case of 'and 210 of the right cut plate 202 from the lower example shown, it is with regard to the axis of rotation of the support plate 60 that corresponds to that of the Connecting lines on the diametrically half-thickness of the ridge.Opposite sides of the bottle B not sym-

The vertical position of the cutting edges 208 and 5 metric to one another are necessary for the bottles B.

210 of the right cutting plate. 202 is to be aligned with reference to beforehand in such a way that its handle // with loading

the position of the cutting edge 218 of the left cutting train on the direction of movement on the conveyor belt

Plate 214 slightly offset in height with respect to the one facing forward, because the handle cut plate on the right

Ridge lines of the bottle B.. th tool head 154 is arranged. This particular

As can be seen from FIGS. 7 and 8, the sectional io more alignment would not be required if all

edge 218 of the left cutting plate 214 relative to the ridge lines on the diametrically opposite

Cut edges 208 and 210 of the right cut plate would be symmetrical about the sides of bottle B.

202 offset vertically upwards, so that the cut 'The bottle B to be deburred also offers a

edge 218 with a perpendicular distance upwards over the second problem, in that the shoulder section in the

the ridge line of the left bottle shoulder area of the handle // excepted in this way

The section lying without touching the ridge line is that the tapered shoulder portion of the

when the handle of the bottle is in the recess bottle B on the inside of the handle H

206 of the right cutting plate 202 is added. is pressed to join the indentation

This offset is used because as a result of the unevenly conical surface of the shoulder on the inside of the handle // with normal cooling or other effects, slight deviations occur between the bottles. To get one through this edge, even if the bottles are made in the same gentle possible interference when inserting the mold. Because of this discrepancy between bottle B and the cutting plates, it has proven to be more advantageous to cut the ridge of the plane of the Gravon protruding from bottle B at an angle to the opposite shoulder sections of the bottle at an angle to the cutting plate in the bottle, rather in two separate operations aligned as a riding position so that the hand can be separated at the same time. In order to align the bottle exactly with grip // during the movement of bottle B into that of the cutting plate, the device is designed in such a way that the cutting plate is inserted into the cutting plate face so that the seat of the bottle hits the cutting plate before the shoulder or the edge is cut into the plate In preparation for the separation process, the movement beyond the plane of the cutting plate end surfaces is caused by the interaction between the.

Bottle surface and the corresponding face To the desired direction setting through surface of the cutting plate is determined. Through ge. lead, an alignment device is used, which is shown separately, independently taking place insertion in Figs. 11 and 12 is shown schematically. The bottles to be deburred will not have any effect on the burr separation section on the supporting strand 38 of a conveyor belt without any deviations between the two shoulder sections. The vertically offset relationship between the right-hand position. The bottles are on the handgriffentgratenden cutting edges and the conveyor belt from left to right in FIGS. 11 and 12 cutting edges of the left cutting plate permits contact una 40 conveyed to the deburring towards separate seating of the respective Fläscfienober- here in the converging mouth of two counter surfaces with regard to 'Plate the appropriate incision of the neck-receiving guides. This separate ride-on process is carried out. 240 a, which is guided above the supporting strand 38 of the by the right cutting plate after Ent conveyor belt about the upper part of the shoulder distance of the ridge from the handle of the bottle by means of 45 sections of the bottle are attached. The two of the cam drive are withdrawn and then guides 240 are raised on a slightly larger Abßend the bottle by means of the support plate 60 than the neck diameter is in this area until the bottle shoulder to the cut, but are close enough to each other edge 218 of the left cutting plate 214 is applied. to capture the ridge protruding from the bottle. around

A corresponding relationship exists in the case of the 50, the plane of the ridge approximately parallel to the trimming of the knife, so that it aligns itself in a fitting direction of movement of the bottle on the supporting engagement with the corresponding cut edges of the strand 38. '. ·. Move cutting plates. Near the exit end of the guides 240 is a

The vertical plane of the cutting edges 208, 210, gate by two pneumatic motors 242 and 244

218 Hegt, formed parallel to the direction of movement of the fla- 55, which are arranged so that their piston

on the supporting strand 38 of the conveyor rods 246, 248 in each case in the path of movement of the

des and is offset sideways from this. While bottles are moving in and out of the conveyor belt

the final orientation of the bottles B can be moved back relative to the same. The piston rods 246,

the cutting plates 202, 214 when moving the bottle 248 are at right angles to the direction of movement of the

see B from the conveyor belt arranged in the cutting plates 202, 60 bottle, and the distance between the

214 takes place by the relocating device, it is piston rods 246 and 248 is chosen so that he

but necessary, the bottle B with its gratansät- is slightly larger than the bottle diameter. ■ · ■

zen in a ready position to the cutting The movement of the piston rod 248 to align in their full plates 202, 214 before they are implemented - _{: the} extended position is used to stop a

will. · ■,. '., 65 Bottle on the conveyor belt at a point where

As can be seen from the following description, the ridge that abuts the piston rod 248 is the pre-alignment of the bottles B before detecting bottle with two nozzles 250 and 252 which are aligned with

the same through the relocating device to some extent a compressed air source in connection. the

13 14

Nozzles 250 and 252 can be directed towards the opposite front, the light source 258 passes, the light is arranged on the guides 240 , whereby a nozzle 250 and 252 is not attached to each beam from the light source 258 to the photo guide 240 and reflects cell 260 , and in this case it is arranged so that it does not actuate a jet of compressed air against motor 262 because the bottle, like the ridge of the bottle desired on the extended one, is directed onto a piston rod 248 with the handle facing forward is applied. As shown in Fig. 11, the conveyor belt is moved on,
The nozzles 250, 252 are visible in the longitudinal direction. According to the illustration in FIG. 4, the movement of the bottle into the deburring device is held at a distance from one another during the conveyor belt in such a way that they each detect the burr on the opposite side of two further neck-receiving guides act on opposite sides of the bottle to a io 266 the bottle neck at an elevated location on rotational movement in the clockwise direction - as in Fig. 11 the ridge while the bottle from the extended drive shown -. to effect until the burr on the counter NEN piston rod 110 of the Motor 102 stops overlying guides and is thus counteracted, a nozzle 268 directs an air jet against the direction of movement forming an angle. the ridge protruding from the shoulder portion,

The motor 242 stops the incoming bottle row between the guides 240, which is again turning the bottle around its vertical axis, until the plane of the ridge is at an angle in a position in which it is free from that of approximately 45 ° to the direction of movement of the extended piston rod 248, includes bottle on the conveyor belt. The exact bottle rotated by the angle of inclination of the ridge to the direction of movement by the air jets of nozzles 250 and 252 from the line pressure of the arriving conveyor belt is not overly critical. To relieve the pressure on the mending bottles and one purpose at a time to release the level of the ridge from the bottle by keeping the plunger rod in it to ensure that the edge C of the 248 is pulled back out of the bottle's trajectory. Shoulder indentation on the inside of the hand. 'grifles is arranged in such a way that they

After being released from the guides 240 , the bottle moves through the transfer device to the bottle to the right (FIGS. 11 and 12) until it intersects the cutting plate behind the corresponding beam of light from a light source 254 under the cutting edge 210 of the right cutting plate breaks, which is arranged on one side of the conveyor belt 202 . During the transfer of the orderly and detected on a photocell 256 on the opposite bottle to the cutting plate 202 which is directed from the .über founding side of the conveyor belt. 30 outside of the handle protruding ridge the forehead-When the bottle interrupts the light beam, then surface 204, and the above-mentioned engagement between a second light source 258 is activated. the ridge and the bottle caused after the Darweiche above the movement path of the bottle position in Fig. 4 during the transfer of and on one side of the conveyor belt, bottle a rotation of the same counterclockwise to a downwardly inclined light beam so clockwise in FIG. 4, in order to ken the plane of the ridge so that it swivels onto the shoulder surface of the bottle so that it meets the plane of the end face. A second photocell 260 is arranged so that 204, 216 coincide.

Assuming that the various parts of the conical bottle shoulder are retracted into the photocells 260 of the transfer device when the bottle is in its handle, then the light beam from the light source 258 is allowed to be retracted Loose side points in the direction of conveyance, referring to FIG. 4, a retraction of the piston

Somewhat behind the photo rod 110 in the direction of movement from the position shown in FIG. 4 the position shown the cells 256, 260 is next to the upper strand 38 of the entrainment of the conveyor belt previously carried by the piston rod 110, a pneumatic motor 262 with a bottle held by the supporting strand 38 piston rod 264 , which is normally 45 of the conveyor belt to the right in Fig 4, until there is a retracted position in which the bottle does not hit the extended piston rod 112 in the path of movement of the bottles on the conveyor. As soon as the bottle tied the piston rod 112 protrudes into it. As can be seen from Fig. 12, it is touched, the various parts of the UmMotor 262 take in an elevated place, for example in a setting device and the punching device, as well as the plane with the middle section of the bottle as shown in Figs. 13a and 13b shoulder and according to the illustration in FIG. 11 such positions. In these figures, the motor 104 is ordered so that its piston rod 264 has been omitted with respect to FIG.
the direction of movement of the bottles on the conveyor It is first referred to Fig. 13 a genome band forms an angle. When the photocell 260 , in which the bottle is in the ready position with the handle facing backwards, in which the plane GP of the ridge on the bottle is detected, the motor 262 is actuated, the bottle B with the vertical plane DP -DP to extend the piston rod 264 and so far in the end faces 204, 216 forms an angle, moving the path of movement of the bottle that the axis of rotation A of the support plate 60 in the plane DP ridge on the shoulder side without a handle at the free end of the End faces 204, 216 lies. Which strikes the bottle B in the piston rod 264. The piston rod 60 restraining the standby position piston rod 264 holds this portion of the ridge solid, and 112 is arranged so that in this position, the movement of the conveyor belt causes a rotation axis CA of the bottle in a vertical plane of the bottle by approximately 180 ° about its axis , so that the plane DP-DP is perpendicular along that the directional adjustment of the handle of the axis of rotation A of the support plate 60 intersects. The bottle is reversed. 65 bottle handle is on the side of the right sectional

As a result of the non-symmetrical shape of the flat plate 202 arranged for deburring the handle side,

shoulder with the indentation around your hand- In this operating stage the piston rods 74,

handle is when a bottle with the handle 82 of both motors 70 and 72 in FIGS. 13a and

13 shown completely retracted, the plates 78, 86 grasping the bottle being withdrawn and releasing the path of movement of the bottles on the conveyor belt. The tool head 154 is in its outermost front position, in which the cutting edges lie in the plane DP-DP , while the two tool heads 156 and 188 are in their outermost retracted positions. 13b shows the support plate 60 in its extreme lower position, in which its upper side lies in a plane with the surface of the supporting strand 38 of the conveyor belt. The first step in the relocating process is that the motors 70 and 72 are actuated to move their piston rods 74, 82, respectively, into the positions shown in FIG. 13 a · position shown in dashed lines to advance in the. the bottle is loosely gripped between plates 78 and 86.

The control is such that now the piston rod 82 of the motor 72 is retracted, ie to the left in FIGS. 13a and 13b, while the piston rod 74 of the motor 70 is extended to the same extent, ie is moved to the left, so that the Plates 78 move together with plates 86 of the enclosed bottle B.

Here, the bottle is displaced from the position shown in FIGS. 13a and 13b towards the end faces 204 and 216 , the bottle B moving to the left of the supporting strand 38 of the conveyor belt onto the support plate 60 .

As soon as the bottle B is the cut plates. 202, 214 , referring now to FIGS. 14a and 14b, the ridge protruding from the outside of the handle abuts the end face 204 due to the inclination and causes the motor 70 to rotate if the motor 70 continues to move to the left of the support plate 60 taken bottle B. as the bottle B is kept on the support plate 60 and the latter can rotate freely about its axis, the continued movement of the bottle results in B to the left to a rotational movement of the base plate 60 in a direction such that the plane GP of the ridge is pivoted into a parallel position with respect to the plane DP-DP. FIGS. 14a and 14b show the bottle after having performed the half rotary movement.

Bottle B is free to rotate as it is not firmly gripped by plates 86 and 78. In addition, at a point in time immediately after the initial movement of the bottle B onto the support plate 60, the motor 64 is operated to slowly raise the bottle B while it is being moved to the left by the transfer device. Thus, by the time the ridge first contacts the face 204 , the top of the support plate 60 has just been raised slightly above the surface of the plate 54 so that the only resistance to the rotation of the bottle is that caused by the Rolling bearing 68 of the piston rod 62 of the motor 64 is opposed. The substantial extent to which the plates 78 and 86 encompass the circumference of the bottle is intended to ensure that the bottle axis is not tilted when moving to the axis of rotation A of the support plate 60.

The transfer stroke of the motors 70 and 72 is controlled in such a way that it is ended when the axis CA of the bottle coincides with the axis of rotation A of the support plate 60. The plane of the ridge GP also coincides with the plane DP-DP of the cutting edges. It should be noted that because of the limited thickness of the ridge on the bottle and, in some cases, the bubbles present in the ridge, there is not always an exact coincidence between the two. Levels and axes is reached. However, since the end position of the bottle with respect to the cutting plate is determined by the interaction of the cut edges with the surface of the bottle along the ridge line, the reduced thickness of the ridge or other changes in the ridge has practically no effect on the deburring process.

Reference is now made to FIG. 5, in which the right cutting plate 202 for the handle side is provided in the end face 204 with the recess 206 which is delimited by the cutting edges 208 and 210 , the shape of which corresponds to the ridge lines of the inside - and outside of the bottle handle correspond. During the movement of the bottle from the position shown in Figures 13a and 13b to the point at which the plane GP of the ridge on the bottle (substantially) coincides with the plane DP-DP of the cut edges, the bottle picks up at one of three various components composed of complex movement. The first component is a rectilinear horizontal movement by the motors 70 and 72. The second component is that of the rotation of the bottle about its vertical axis, which is caused by the abutment of the ridge on the face 204 , while the bottle is still linear by the motors 70 and 72 is moved. The third movement component is a straight, vertical movement which is brought about by the lifting of the support plate 60. After the ridge hits the face 204 , all three components of movement occur simultaneously.

The total amount of rectilinear horizontal movement to which the bottle is subjected is determined mechanically by regulating the stroke of the motor 70. The total amount of rotation of the bottle about its vertical axis is also primarily dependent on the stroke of the motor 70. However, the amount of vertical movement imparted to the bottle is determined by the interaction between the bottle and the downwardly directed portions of the cut edges 208 and 210 .

The amount of pressure exerted on the motor 64 to lift the bottle during its movement into the punching position is so small that it is easily overcome if an upward-facing surface on the bottle in the region of the ridge line meets a downward-facing surface of the Recess 206 comes into cooperation in the area of the cut edges.

In the manner described, the bottle handle is inserted into the cutting plate 202, this position being shown in FIGS. 15a and 15b.

Reference is now made to Figures 16a and 16b; here the right motor 158 is actuated in order to move the cutter insert 220, 226 from the retracted position shown in FIGS. 15a and 15b into the deburring position corresponding to FIGS. 16a and 16b. In this movement, the knives 222, 224 cut the ridge around the handle and come into mating engagement

(Fig. 10) with the corresponding cutting edges 208, 210 of the cutting plate 202. The motor 158 is then actuated in order to move the tool head 156 back into its initial position shown in Fig. 15a.

109 647/179

During the backward movement of the tool head 156 , the motor 168 is actuated in order to extend its piston rod 174 and thereby pivot the cam 164 so that the edge 180 having the short distance comes to rest against the rear side 184 of the tool head 154 . During this process, the compression springs 162 push the tool head 156 to the left from the position shown in FIGS. 16a and 16b into the retracted position shown in FIGS. 17a and 17b.

As soon as the right tool head 156 and thus the end face 204 is withdrawn to the left out of the plane DP-DP , the bottle handle is released. The retraction motion cancels the downward force exerted by the downwardly directed portions of the cut edges and allows the motor 64 to raise the support plate 60 until the left shoulder side of the bottle abuts the cut edge 218 . This makes the bottle perpendicular relative to the corresponding cutting plates in the form shown in FIG. 8 is brought into position, wherein the right cutting plate in Fig. 8 is withdrawn in a direction away from the viewer, so that it comes free from the bottle.

The motor 190 is then actuated to move the left tool head 188 to its forward position in which the blades of the left knives 228 grain into mating engagement with the left cutting edges 218, thereby severing the burr from the left shoulder of the bottle. After the separation process, the left tool head 188 is returned to its starting position by the piston rod 192 of the motor 190 being retracted.

At this point, the ridge F is severed from the handle H and also from the left opposite shoulder side of the bottle B. The motor 64 is then operated in reverse to lower the support plate 60 to its original position, and the motors 70 and 72 are operated simultaneously to slide the bottle B horizontally from the support plate 60 onto the supporting strand 38 of the conveyor belt. During this process, the piston rod 74 of the motor 70 is returned to its fully retracted position (position corresponding to FIGS. 13a and 13b), while the motor 72 moves its plates 86 far enough to the right to place the deburred bottle B on the conveyor belt , and then reversing its movement again to move the plates 86 into the positions shown in FIG. 13 a and 13 b to move back the position shown. During this movement, the motor 168 is activated again in order to return the right tool head 154 to its front position, in which the end face 204 lies in the plane DP-DP. The motor 104 has been actuated at any suitable point in time during the relocating and deburring process, so that when the deburred bottle is returned to the supporting strand 38 of the conveyor belt, the piston rod 112 has been retracted so that the deburred bottle can be transported away from the conveyor belt. The motor 104 is then actuated to move its piston rod 112 into the path of movement of the bottle on the supporting strand 38, and the piston rod 110 is withdrawn to release the next bottle, which then strikes the piston rod 112 and thus the device ready for operation to repeat the deburring process described.

While the device described is used in particular for deburring bottles, where the ridge lines on the opposite sides of the bottle are not symmetrical, it is obvious that the invention can also be used for bottles and hollow bodies, in which the ridge lines on the opposite sides of the hollow body run symmetrically.

Because of the deviations of the individual hollow bodies, even if they are in the same shape one after the other can be generated, a precise severing of the burr in all cases by aligning the to clipping surface can be achieved in such a way that the surface itself is used to cut the To determine the position of the hollow body relative to the punching device and the bottle in this way for realigning each individual surface to be trimmed. Even with symmetrical bottles it is desirable to orient the bottle separately in the same way to avoid the ridge on either side to separate the bottle center line in two processes.

Claims (13)

Patent claims: 1. Process for deburring bottles made of thermoplastic material or the like hollow bodies, which after production by inflating a parison in a split shape at least one ridge approach lying in a diametrical plane on one side have, wherein the bottles are transported to a punching device by means of a conveyor device are, which has a cutting and a knife plate, which are relative to each other and are power-driven movable to the bottle and their cut edges with the to be deburred Match the contour and with the ridge in line with the cutting edge of the cutting plate Position of the bottle in a position outside of its conveying plane separated along the surface of the bottle and then conveyed the bottle further is, characterized in that the bottle is on the conveyor about its longitudinal axis is rotated to a position in which the ridge is at an angle to the plane of the cutting plate forms, and during their movement from the conveyor to the cutting plate at the stop on the same in the aligned with the ridge to the cutting plate and on this adjacent position is rotated. 2. The method according to claim 1, characterized in that the bottle for alignment of the ridge attachment is moved axially at the same time as the cutting plate is rotated. 3. The method according to claim 1 or 2 for deburring bottles, which on both sides in the diametrical plane, lying ridge approaches, the two-sided approach lines, based on the axis of the bottle, can run asymmetrically, characterized in that the bottle (B) always in the ridge level is aligned with the same ridge pointing in the same direction, whereupon the ridge Approach cut off on one side of the bottle aligned in the punching position and then After releasing and realigning the bottle, cut off the ridge on the other side will. 4. Device for performing the method according to claim 1 and 2 with a conveyor device, which transports the bottles to a punching device that has a cutting and a Has knife plate which are movable relative to one another and to the bottle in a power-driven manner and whose cut edges match the contour to be deburred, characterized by: a) a horizontal guide (150) along which the cutting plate (202) and the cutter insert ' (220), which are arranged vertically, are power-driven movable between a release position and a deburring position; b) a support plate (60) for the bottles (B), which is freely rotatable about a vertical axis in the deburring position and which is lifted by a lifting device with a motor (64) between an upper and a lower one, which is just overcoming its own weight and the weight of the bottle (B) is displaceable to a lower limit position, the end face of the cutting plate (202) in the deburring position being at a distance from the axis of rotation of the support plate (60) which corresponds essentially to half the thickness of the burr attachment; c) a conveyor device (36) having a conveyor belt with which a bottle (B) can be moved into a readiness position which is laterally spaced from the support plate (60) and in which the bottle axis and the support plate axis lie in a common vertical plane which is at right angles extends to the end face of the cutting plate (202); d) devices arranged on the conveying device (36) with which a bottle (β) located thereon can be aligned in such a way that the ridge attachment plane forms an acute angle to the end face of the cutting plate (202) ; e) a transfer device driven horizontally displaceably by means of motors (70, 72) and piston rods (74, 82) which has plates (78, 86) with which the bottle (B) in the ready position can be loosely grasped and moved into the deburring position , the bottle (B) being rotated about its axis by the stop of its ridge attachment during its movement into the deburring position on the end face (204) of the cutting plate (202) , while at the same time the lifting device (64) of the support plate (60) is actuated, and is aligned by the bottle (B) under a rotary and vertical movement with its ridge line to the cutting edges (208, 210) of the cutting plate (202) and moved into contact with the ridge on its end face (204) . 5. Apparatus according to claim 4 for performing the method according to claim 3, characterized characterized in that for each ridge on both sides of the bottle (B) a punching device (120) is provided which each have a common guide (150 or 152) for the associated cutting plates (202 or 214) and cutter inserts (220 or 226) , and that both punching devices can be operated independently of one another. 6. Apparatus according to claim 4 or 5, characterized in that the knives (222, 224, 228) of the knife plate or plattens (220, 226) on the side facing away from the bottle surface have a bevel forming the cutting edge, which in corresponding inclined surfaces of the cut edges (208, 210, 218) of the cut plate or plates (202, 214) engage. 7. Device according to one of claims 4 to 6, characterized in that the conveying device (38), a locking device with motors (100, 102) determining the readiness position of the bottles (B), the transfer device and the support plate (60) on a work table (48) formed adjustable in height on columns (32) guided lower frame (40) and the punching device (120) are arranged on an upper frame adjustable in height on the columns (32), and that the upper, the bottles (B) feeding strand ( 38) of the conveyor belt, the work table (48) and the support plate (60) passing through an opening (58) in the work table (48) lie in a common plane from which the support plate (60) can be lifted. 8. Device according to one of claims 4 to 7, characterized in that the end positions of the cutting plate or plates (202 or 214) can be determined by a cam drive with motor (168) and cam (164) . 9. Device according to one of claims 3 to 7, characterized in that a separating device is arranged at the outlet end of a first guide (240) receiving the bottle neck between them and has two pressure-medium-operated motors (242, 244) arranged at a distance in the conveying direction, whose piston rods (246, 248) can be pushed alternately into the path of movement of the bottles (B), and that the locking device, which determines the standby position and is arranged in the conveying direction behind the separating device, is arranged at the outlet end of a second guide (266) which accommodates the bottle neck between them, and the Piston rods (108, 110) of their two pressure medium-operated motors (100, 102) , which are arranged at a distance in the conveying direction, can be pushed alternately into the movement path of the bottles. 10. The device according to claim 9, characterized in that between the motors (242, 244) of the separating device two the ridge on both sides of the bottle neck in the opposite direction with compressed air acting nozzles (250, 252) are arranged. 11. The device according to claim 1 or 10, characterized in that a light barrier with a light source (254) and a photocell (256) directed at right angles over the path of movement of the bottles (B) is provided between the two guides (240, 266) receiving the neck is, with which a scanning device with a light source (258) and a photocell (260) to determine the side of a bottle (B) with both sides asymmetrically running ridge is controllable, which in turn controls a pressure medium-actuated piston motor (262) , whose piston rod (264) engages in the movement path of the bottle (B) at the ridge of a certain side and thereby the Bottle (B) is rotatable about its axis. 12. Device according to one of claims 4 to 11, characterized in that between the motors (100, 102) of the locking device determining the standby position, a ridge on one side of the bottle (B) with The nozzle (268) which acts on compressed air and rotates the ridge base plane in the desired angular plane to the end face (204, 216) of the cutting plates (202, 214) is arranged. 13. Device according to one of claims 4 to 12, characterized in that the cutting plate or plates (202, 214) and the cutting plate or plates (200, 226) are exchangeable on tool heads (154, 156 or 186, 188 ), which are guided on guides (150, 152) that extend in parallel and are designed as rods and can be actuated by motors (158, 168, 190). In addition 5 sheets of drawings