CA1198564A - Deep drawing machine for manufacturing receptacles made out of thermoplastic foil material - Google Patents
Deep drawing machine for manufacturing receptacles made out of thermoplastic foil materialInfo
- Publication number
- CA1198564A CA1198564A CA000406796A CA406796A CA1198564A CA 1198564 A CA1198564 A CA 1198564A CA 000406796 A CA000406796 A CA 000406796A CA 406796 A CA406796 A CA 406796A CA 1198564 A CA1198564 A CA 1198564A
- Authority
- CA
- Canada
- Prior art keywords
- slider
- hollow mold
- deep
- banderole
- drawing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 title claims abstract description 10
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 8
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000011888 foil Substances 0.000 title abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000006854 communication Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 3
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002483 medication Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/16—Lining or labelling
- B29C51/165—Lining or labelling combined with the feeding or the shaping of the lining or the labels
- B29C51/167—Lining or labelling combined with the feeding or the shaping of the lining or the labels of a continuous strip
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
ABSTRACT
A deep drawing machine for manufacturing containers from thermo-plastic foil material has an arrangement for inserting banderole-shaped strip section into the hollow mold prior to the deep drawing step. The machine includes support means for a roll of foil material, means for transporting the foil material, a heating arrangement and a forming arrangement. The forming arrangement has a stationary counter mold, the hollow mold being movable per-pendicular to the foil plane and being pressed against the counter mold after the heating of the foil. The container is then formed by means of a pressure medium and the strip sections, which have been introduced into the hollow mold, are simultaneously sealed onto the container. The arrangement for inserting the banderole-shaped strip sections (10) into the hollow mold (11) includes a winding mandrel (12) which is stationary with respect to the axially movable hollow mold (11), in the outer peripheral surface of which winding mandrel there are disposed a plurality of bores (14) adapted to be placed in communica-tion with a vacuum source (13). Arranged exteriorly from the hollow mold (11) at the inlet side of the banderole-shaped strip sections (10) is a slider (16) which is glidably mounted relative to the hollow mold (11) and the winding mandrel (12). The slider includes a recess (17), the height of which corres-ponds to the banderole-shaped strip sections.
A deep drawing machine for manufacturing containers from thermo-plastic foil material has an arrangement for inserting banderole-shaped strip section into the hollow mold prior to the deep drawing step. The machine includes support means for a roll of foil material, means for transporting the foil material, a heating arrangement and a forming arrangement. The forming arrangement has a stationary counter mold, the hollow mold being movable per-pendicular to the foil plane and being pressed against the counter mold after the heating of the foil. The container is then formed by means of a pressure medium and the strip sections, which have been introduced into the hollow mold, are simultaneously sealed onto the container. The arrangement for inserting the banderole-shaped strip sections (10) into the hollow mold (11) includes a winding mandrel (12) which is stationary with respect to the axially movable hollow mold (11), in the outer peripheral surface of which winding mandrel there are disposed a plurality of bores (14) adapted to be placed in communica-tion with a vacuum source (13). Arranged exteriorly from the hollow mold (11) at the inlet side of the banderole-shaped strip sections (10) is a slider (16) which is glidably mounted relative to the hollow mold (11) and the winding mandrel (12). The slider includes a recess (17), the height of which corres-ponds to the banderole-shaped strip sections.
Description
S~
The invention relates to a deep-drawing machine for manufacturing containers or receptacles made out of thermoplastic foil matcrial which in-cludes an arrangement for introducing sections of banderole-shaped strips into the hollow molds prior to the deep drawing step.
A deep-drawing machine of -this type permits an economic and hygienic packaging of substances in liquid or pasty form, for example, medications or food stuff. For this purpose, the deep-drawing machine includes means for manufacturing the container, means for fil~ng the container and means for sealing it. Furthermore, there are means provided to affix onto the container, for exanple, decorative material, by means of a banderole-like strip which is connected to the exterior wall of the container and is permanently bonded to it by means of being sealed thereon.
A deep-drawing machine of this type is, for example, disclosed in German published patent application No. 23 65 028. In this known deep-drawing machine the arrangement for inserting the banderole-like strip sections into the hollow mold encompasses a slidably axially movable winding mandrel which serves to act on the banderole-like strip sections. The winding mandrel pro-jects in a first position completely into the hollow mold, whereas in its other second position its front end forms the bottom of the mold during the forming process.
In particular, with a rotatable winding mandrel with a circular surface and a container shape which departs from the conventional cylindrical shape (such container shape can, for example, have an elliptical cross-sectional surface in the edge vicinity) there arise certain problems when introducing the banderoles. Such problems exhibit themselves, for example, in that over-lapping end portions of the banderole during the deep-drawing of the container is displaced in a direction towards the bottom of the mold and thereby no _ I
longer remains at the same heigh-t as the initial portion of the banderole. ~uch a banderoled container is, however, used as scrap.
It is an object of this invention to improve known deep-drawing machines of the above type in such a way that the afore-described prob]ems are avoided and an error-free banderoling is achieved.
The invention provides a deep drawing machine for manu-facturing containers from thermoplastic sheet material by deep drawing followed by pressure forming in a hollow mold, said machine including insertion means for positioning a banderole-shaped s-trip section into the hollow mold prior to deep drawing of the sheet material, whereby when -the container is formed by means of a pres-sure medium applied -to the interior thereof the strip section is sealed onto the outer surface of the container: wherein said insertion means cornprises a winding mandrel having a profile that corresponds to the interior of said hollow mold to be received therein with a clearance that defines a guide channel around the winding mandrel; the guide channel portion of the outer peripheral surface of the mandrel having a plurality of openings -therein tha-t are adapted to be placed in communication with a vacuum source;
means for feeding said s-trip sec-tion endwise into said guide channel and around said winding mandrel; means to apply vacuum to said openings to draw the strip section against -the surface of said winding mandrel; means to move said hollow mold axially with respect to said winding mandrel to posi-tion said strip section at a predetermined axial location within said hollow mold; means for releasing said strip section from said mandrel and means for engag-ing it to said hollow mold at said predetermined location.
The inven-tion is here:inafter further described, by way of example only, in conjunction with the drawings, in whicho Figure 1 is a schematic cross-sectional view in the region of the - 2a -s~
hollow molds of the deep-drawing machine in which all parts of the arrangement, which are not immediately related to the invention, have been omitted, which cross-sectional view is along line B-B of Figure 2;
Figure 2 is a longitudinal sectional view along .~-A o~ Pigure l;
Figure 3 is a plan view of the upper side of the glidably mounted slider;
Figure 4 is a cross-sectional view of the glidably mounted slider along line C-C of Figure 3;
Figure 5 is a partial view of the glidably mounted slider viewed in the direction in which the banderole-shaped strip section is introduced;
Figure 6 illustrates a first embodiment of a cutting arrangement for cutting the banderole-shaped strip sections;
Figure 7 illustrates a further embodiment of a cut~ing arrangement for cutting the banderole-shaped strip sections; and Figure 8 is a cross-sectional view of a plurality of hollow molds arranged side-by-side in the cutting plane s-s according to Figure 2.
The principle of manufacturing of containe-rs having banderole-shaped strips in a deep-drawing machine is already known. The banderole-shaped strip~
which can serve for decorative or reinforcement purposes~ is inserted in a hollow mold, a thermoplastic preheated foil is placed over the open side of the hollow mold, and with the aid of a punch the thermoplastic foil is shaped while being introduced into the hollow mold and thereby is shaped into a con-tainer. For final shaping the container receives the necessary shape by means of a pressure medium which acts on the punch side on the preshaped con~ainer and presses its walls against the in~er surface of the hollow mold. The foil of the container is thus fixedly joined to the banderole-strip which has been previously introduced into the hollow mold.
:
s~
In order to make possible the insertion of the banderole-sha~ed strip into the hollow mold there is provided in the known deep-drawing machines a rotatable winding mandrel which brings the banderole-shaped strip into a shape which is adapted to that of the container and then transfers the strip into the hollow mold.
The arrangement of this invention departs from the aforedescribed conventional arrangement in that a non-rotatable winding mandrel 1~ is provided (see Figure 1)~ which is fixedly arranged relative to the axially movable hollow.mold 1l. Outside of the hollow mold 11 there is mounted at the inlet side of the banderole-shaped strip sections 10 a slider 16 which is glidably mounted relative to the hollow mold 11 and the winding mandrel 12 (see Figures 3 to 5). This slider 16 has a plurality of recesses 17 the height of which correspond to the width of the banderole-shaped strips 10. In order to facilit-ate the introduction of the banderole-shaped strips 10 i.nto the recesses 17, the recess is advantageously widened by a funnel-shape at the side confronting the exterior surface 18 of the slider 16 which faces away from the hollow mold 11 .
The glidable movement of the slider 16 is effected perpendicular to the plane of the banderole-shaped strip 10 and in a plane which is parallel to the path, (not shown) traversed by the foil and from which the containers are manufactured.
The glidably mounted sliders 16 are alternatively movable between essentially two operative positions~ whereby in the first operati~e position of the slider 16 the recess 17 is in alignment with the inlet channel l9 for the banderole-shaped strip sections 10 in the hollow mold 11 and whereby in the second operative position of the slider 16 the recess 17 is disposed at the level of the openings 15 in the exterior peripheral surface of the winding man-drel 12. In order to limit the respecti~e operative positions of the slider 16, the latter has two stops 20, 21 projecting in the direction of the hollow mold 113 which serve to abut against the exterior surfaces 22, 23 of the hollow mold 11 and in this manner limit the further movement of the slider 16 from its respective operative position. At least one adjustable screw 39, mounted in the stop 21 where it can be fixed in position, serves to exactly adjust the working positions of the glidably mounted slider 16.
The inserting of the banderole-shaped strip 10 into the hollow mold 11 is carried out as follows:
The slider 16 is disposed in its first working position, in which the recess 17 is in alignment with the inlet channel 19. This operative position of the slider 16 is limited by the stop 219 which abuts against the exterior surface 23 of the hollow mold 11. The hollow mold 11, which is movable relative to the fixed winding mandrel 12 in the axial direction, su~rounds in its first working positioll the winding mandrel 12 coaxially in such a way that there is formed between the inner wall 33 of ~he hollow mold 11 and the exterior wall 34 of the winding mandrel 12 a guide chalmel 35 for the banderole-shaped strips 10.
The banderole~shaped strips 10 are paid out from a supply roller (not shown~ and by suitable means, for example3 bilaterally disposed drive rollers 27 acting on the strip 10, is preferably guided step-wise through the recess 17 and the inlet channel l9 in such a way into the guide channel 35 that it abuts against the exterior curved surface 34 of the winding mandrel 12. In order to facilitate the introduction of the banderole-shaped strips 10, the glidably motmted slider 16 has a nose-shaped projection 16' which projects nor-mally from the exterior surface 18' of the slider 16 facing the winding mandrel 12. This projection 16' is clearly visible from an examination of ~igures 3 and 4. The banderole-shaped strip 10, which is introduced into the recess 17 is slidingly guided along the exterior surface ~0 of the projection 16'. The winding mandrel 12 has at its disposal a cut-out ~1 at the level and depth of the projection 16 for the purpose of not hindering the movement of the slider 16 between its different operative positions. The forward end of the strip 10 thus reaches the region of the exterior glide surface 3~ of the winding mandrel 12 wherein a bore 14 is arranged which is in communication via a conduit 13' with a vacuum source 13, and as a result the strip 10 is held against the exterior surface 14 of the winding mandrel 12.
By means of a cutting arrangement 28, the banderole-shaped strip 10 is thereafter cut to a predetermined length, which in general has a maximum length corresponding to the exterior periphery of the container to be banderoled.
In contrast to the arrangements of the prior art, no overlappi.ng of the strip 10 is necessary, so that in an advantageous manner displacement of the overlapping end pieces of the strip during the deep-drawing process can not occur.
The arrangement of the invention also makes it possible in an advan-tageous manner to work with shorter strip sec*ions the length of which may be less than the exterior periphery of the container, for example when only portions of the exterior periphery of the container are to be provided with a banderole-shaped strip 10.
The glidably mounted slider 16 is thereafter moved into its second operative position which is limited by means of the stop 20 against which with the exterior surface 22. The further movement o:E the slider 16 is illustrated by means of the arrow 36. During the further movement of the slider 16, the rear end portion of the banderole-shaped strip 10 (which is still disposed within the recess 17 of the slider 16) is moved by means of the slider 16 in a s~'~
direction onto the exterior peripheral surface 34 of the winding mandrel 12 and thereby arrives at the region of the opening 15. These openings 15, as is the case with the opening 14, are in communication with a vacuum source 13 via the conduit 13'. When the opening 15 is placed in communication with the vacuum source, the rear end piece of the banderole-shaped strip 10 which has been moved by the s]ider 16, is held against the winding mandrel 12. In order not to inter~ere with the forward end piece which is disposed in the region o~
the opening 1~ against the winding mandrel, the projection 16' has a recess 16" (see Figure 4).
In a first working skep the hollow mold 11, which is movable in the axial direction moves relative to the stationary winding mandrel 12 so that the openings 26 on the inner wall surface 25 of the hollow mold 11 are disposed at the level of the banderole-shaped strips lO wound on the winding mandrel. The openings 26 are in communication with the vacuum source during predetermined periods of time. First of all~ the communication of the openings 1~, 15 with the vacuum source 13 is interrupted, as a result of which the strip lO is re-leased ~rom the exterior peripheral surface 34 of the winding mandrel 12 and, due to the inherent elastic tension, bears against the inner wall surface 25 of the hollow mold 11 in the region of the bores 26. Thereafter the openings 26 are placed in communication with the vacuum source, whereby the strip 10 is firm-ly held against the inner wall of the hollow mold 11. In a further working step the hollow mold ll then moves upwardly together with the thereto adhering strip 10 relative to the stationary winding mandrel 12 so that its upper base surface 24 forms the bottom o khe hollow mold 11. I`hereafter in a known manner, as has been previously herein described, a container is formed by means of a deep-draw-ing process with the aid of the hollow mold 11$ the con~ainer being made out of a thermoplastic foil material. The banderole-shaped strip 10, which adheres 5~j~
to ~he ex~erior wall of the container and annularly su-rrolmds it, is thus permanently seale~ to the wall of such container.
ln the meantime the glidably mounted slider 16 has returned to its first operative position so that with the introduction of a new banderole section into the inlet opening of the recess 17 a new sequence of the afore-described operative steps can be initiated.
For the further movement o:E the glidably mounted slider 16 into its operative position in the direction of the arrow 36 there is provided a drive mechanism 38. This drive mechanism is preferably a linear drive mechanism which has a reciprocating piston acting in the operative directions which is actuated by a pressure medium9 such as for example pressuriæed air.
With reference to Figures 6 and 7 there are illustrated advantageous embodi.ments of the cut~ing arrangement 28 for precutting the banderole-shaped s*rips 10 to a predetermined length. The embodiment of Figure 6 includes a first stationary member 37 having a cutting edge 31 in which a further second part 29 is rotatably mounted about an axis disposed in the plane of the strip 10, which part 29 has a centrally arranged guide slit 30 ~hich is adapted for guiding the strip 10 therethrough. Upon rotational movement of the rotatable part 39 the banderole-shaped strip 10 is cut at the cutting edge 31.
A particularly advantageous embodiment of a cutting arrangement 28 is schematically illustrated in Figure 7. Such arrangement includes a knife 32, which is arranged parallel to the outer surface of the slider and stationary relative to its movement and thereby during the further movement of the slider 16 into its second operative position the banderole-shaped strips is cut in the region of the funnel-shaped mouth of the recess 17. This embodiment dis-tinguishes itself by having only a few parts which makes it particularly reliable in operation.
~3~
It is possible without any particular degree of difficulty, as is schematically illustrated in Figure 8, to introduce banderole-shaped strips 10 into a plurality of hollow molds 11. In such arrangement for examp]e a row of a plurality of hollow molds 11 are arranged side-by-side. For this purpose, the slider 16 has a number of hollow molds 11 and a corresponding number of recesses 17 and projections 16' through which the banderole-shaped strips are guided.
The invention relates to a deep-drawing machine for manufacturing containers or receptacles made out of thermoplastic foil matcrial which in-cludes an arrangement for introducing sections of banderole-shaped strips into the hollow molds prior to the deep drawing step.
A deep-drawing machine of -this type permits an economic and hygienic packaging of substances in liquid or pasty form, for example, medications or food stuff. For this purpose, the deep-drawing machine includes means for manufacturing the container, means for fil~ng the container and means for sealing it. Furthermore, there are means provided to affix onto the container, for exanple, decorative material, by means of a banderole-like strip which is connected to the exterior wall of the container and is permanently bonded to it by means of being sealed thereon.
A deep-drawing machine of this type is, for example, disclosed in German published patent application No. 23 65 028. In this known deep-drawing machine the arrangement for inserting the banderole-like strip sections into the hollow mold encompasses a slidably axially movable winding mandrel which serves to act on the banderole-like strip sections. The winding mandrel pro-jects in a first position completely into the hollow mold, whereas in its other second position its front end forms the bottom of the mold during the forming process.
In particular, with a rotatable winding mandrel with a circular surface and a container shape which departs from the conventional cylindrical shape (such container shape can, for example, have an elliptical cross-sectional surface in the edge vicinity) there arise certain problems when introducing the banderoles. Such problems exhibit themselves, for example, in that over-lapping end portions of the banderole during the deep-drawing of the container is displaced in a direction towards the bottom of the mold and thereby no _ I
longer remains at the same heigh-t as the initial portion of the banderole. ~uch a banderoled container is, however, used as scrap.
It is an object of this invention to improve known deep-drawing machines of the above type in such a way that the afore-described prob]ems are avoided and an error-free banderoling is achieved.
The invention provides a deep drawing machine for manu-facturing containers from thermoplastic sheet material by deep drawing followed by pressure forming in a hollow mold, said machine including insertion means for positioning a banderole-shaped s-trip section into the hollow mold prior to deep drawing of the sheet material, whereby when -the container is formed by means of a pres-sure medium applied -to the interior thereof the strip section is sealed onto the outer surface of the container: wherein said insertion means cornprises a winding mandrel having a profile that corresponds to the interior of said hollow mold to be received therein with a clearance that defines a guide channel around the winding mandrel; the guide channel portion of the outer peripheral surface of the mandrel having a plurality of openings -therein tha-t are adapted to be placed in communication with a vacuum source;
means for feeding said s-trip sec-tion endwise into said guide channel and around said winding mandrel; means to apply vacuum to said openings to draw the strip section against -the surface of said winding mandrel; means to move said hollow mold axially with respect to said winding mandrel to posi-tion said strip section at a predetermined axial location within said hollow mold; means for releasing said strip section from said mandrel and means for engag-ing it to said hollow mold at said predetermined location.
The inven-tion is here:inafter further described, by way of example only, in conjunction with the drawings, in whicho Figure 1 is a schematic cross-sectional view in the region of the - 2a -s~
hollow molds of the deep-drawing machine in which all parts of the arrangement, which are not immediately related to the invention, have been omitted, which cross-sectional view is along line B-B of Figure 2;
Figure 2 is a longitudinal sectional view along .~-A o~ Pigure l;
Figure 3 is a plan view of the upper side of the glidably mounted slider;
Figure 4 is a cross-sectional view of the glidably mounted slider along line C-C of Figure 3;
Figure 5 is a partial view of the glidably mounted slider viewed in the direction in which the banderole-shaped strip section is introduced;
Figure 6 illustrates a first embodiment of a cutting arrangement for cutting the banderole-shaped strip sections;
Figure 7 illustrates a further embodiment of a cut~ing arrangement for cutting the banderole-shaped strip sections; and Figure 8 is a cross-sectional view of a plurality of hollow molds arranged side-by-side in the cutting plane s-s according to Figure 2.
The principle of manufacturing of containe-rs having banderole-shaped strips in a deep-drawing machine is already known. The banderole-shaped strip~
which can serve for decorative or reinforcement purposes~ is inserted in a hollow mold, a thermoplastic preheated foil is placed over the open side of the hollow mold, and with the aid of a punch the thermoplastic foil is shaped while being introduced into the hollow mold and thereby is shaped into a con-tainer. For final shaping the container receives the necessary shape by means of a pressure medium which acts on the punch side on the preshaped con~ainer and presses its walls against the in~er surface of the hollow mold. The foil of the container is thus fixedly joined to the banderole-strip which has been previously introduced into the hollow mold.
:
s~
In order to make possible the insertion of the banderole-sha~ed strip into the hollow mold there is provided in the known deep-drawing machines a rotatable winding mandrel which brings the banderole-shaped strip into a shape which is adapted to that of the container and then transfers the strip into the hollow mold.
The arrangement of this invention departs from the aforedescribed conventional arrangement in that a non-rotatable winding mandrel 1~ is provided (see Figure 1)~ which is fixedly arranged relative to the axially movable hollow.mold 1l. Outside of the hollow mold 11 there is mounted at the inlet side of the banderole-shaped strip sections 10 a slider 16 which is glidably mounted relative to the hollow mold 11 and the winding mandrel 12 (see Figures 3 to 5). This slider 16 has a plurality of recesses 17 the height of which correspond to the width of the banderole-shaped strips 10. In order to facilit-ate the introduction of the banderole-shaped strips 10 i.nto the recesses 17, the recess is advantageously widened by a funnel-shape at the side confronting the exterior surface 18 of the slider 16 which faces away from the hollow mold 11 .
The glidable movement of the slider 16 is effected perpendicular to the plane of the banderole-shaped strip 10 and in a plane which is parallel to the path, (not shown) traversed by the foil and from which the containers are manufactured.
The glidably mounted sliders 16 are alternatively movable between essentially two operative positions~ whereby in the first operati~e position of the slider 16 the recess 17 is in alignment with the inlet channel l9 for the banderole-shaped strip sections 10 in the hollow mold 11 and whereby in the second operative position of the slider 16 the recess 17 is disposed at the level of the openings 15 in the exterior peripheral surface of the winding man-drel 12. In order to limit the respecti~e operative positions of the slider 16, the latter has two stops 20, 21 projecting in the direction of the hollow mold 113 which serve to abut against the exterior surfaces 22, 23 of the hollow mold 11 and in this manner limit the further movement of the slider 16 from its respective operative position. At least one adjustable screw 39, mounted in the stop 21 where it can be fixed in position, serves to exactly adjust the working positions of the glidably mounted slider 16.
The inserting of the banderole-shaped strip 10 into the hollow mold 11 is carried out as follows:
The slider 16 is disposed in its first working position, in which the recess 17 is in alignment with the inlet channel 19. This operative position of the slider 16 is limited by the stop 219 which abuts against the exterior surface 23 of the hollow mold 11. The hollow mold 11, which is movable relative to the fixed winding mandrel 12 in the axial direction, su~rounds in its first working positioll the winding mandrel 12 coaxially in such a way that there is formed between the inner wall 33 of ~he hollow mold 11 and the exterior wall 34 of the winding mandrel 12 a guide chalmel 35 for the banderole-shaped strips 10.
The banderole~shaped strips 10 are paid out from a supply roller (not shown~ and by suitable means, for example3 bilaterally disposed drive rollers 27 acting on the strip 10, is preferably guided step-wise through the recess 17 and the inlet channel l9 in such a way into the guide channel 35 that it abuts against the exterior curved surface 34 of the winding mandrel 12. In order to facilitate the introduction of the banderole-shaped strips 10, the glidably motmted slider 16 has a nose-shaped projection 16' which projects nor-mally from the exterior surface 18' of the slider 16 facing the winding mandrel 12. This projection 16' is clearly visible from an examination of ~igures 3 and 4. The banderole-shaped strip 10, which is introduced into the recess 17 is slidingly guided along the exterior surface ~0 of the projection 16'. The winding mandrel 12 has at its disposal a cut-out ~1 at the level and depth of the projection 16 for the purpose of not hindering the movement of the slider 16 between its different operative positions. The forward end of the strip 10 thus reaches the region of the exterior glide surface 3~ of the winding mandrel 12 wherein a bore 14 is arranged which is in communication via a conduit 13' with a vacuum source 13, and as a result the strip 10 is held against the exterior surface 14 of the winding mandrel 12.
By means of a cutting arrangement 28, the banderole-shaped strip 10 is thereafter cut to a predetermined length, which in general has a maximum length corresponding to the exterior periphery of the container to be banderoled.
In contrast to the arrangements of the prior art, no overlappi.ng of the strip 10 is necessary, so that in an advantageous manner displacement of the overlapping end pieces of the strip during the deep-drawing process can not occur.
The arrangement of the invention also makes it possible in an advan-tageous manner to work with shorter strip sec*ions the length of which may be less than the exterior periphery of the container, for example when only portions of the exterior periphery of the container are to be provided with a banderole-shaped strip 10.
The glidably mounted slider 16 is thereafter moved into its second operative position which is limited by means of the stop 20 against which with the exterior surface 22. The further movement o:E the slider 16 is illustrated by means of the arrow 36. During the further movement of the slider 16, the rear end portion of the banderole-shaped strip 10 (which is still disposed within the recess 17 of the slider 16) is moved by means of the slider 16 in a s~'~
direction onto the exterior peripheral surface 34 of the winding mandrel 12 and thereby arrives at the region of the opening 15. These openings 15, as is the case with the opening 14, are in communication with a vacuum source 13 via the conduit 13'. When the opening 15 is placed in communication with the vacuum source, the rear end piece of the banderole-shaped strip 10 which has been moved by the s]ider 16, is held against the winding mandrel 12. In order not to inter~ere with the forward end piece which is disposed in the region o~
the opening 1~ against the winding mandrel, the projection 16' has a recess 16" (see Figure 4).
In a first working skep the hollow mold 11, which is movable in the axial direction moves relative to the stationary winding mandrel 12 so that the openings 26 on the inner wall surface 25 of the hollow mold 11 are disposed at the level of the banderole-shaped strips lO wound on the winding mandrel. The openings 26 are in communication with the vacuum source during predetermined periods of time. First of all~ the communication of the openings 1~, 15 with the vacuum source 13 is interrupted, as a result of which the strip lO is re-leased ~rom the exterior peripheral surface 34 of the winding mandrel 12 and, due to the inherent elastic tension, bears against the inner wall surface 25 of the hollow mold 11 in the region of the bores 26. Thereafter the openings 26 are placed in communication with the vacuum source, whereby the strip 10 is firm-ly held against the inner wall of the hollow mold 11. In a further working step the hollow mold ll then moves upwardly together with the thereto adhering strip 10 relative to the stationary winding mandrel 12 so that its upper base surface 24 forms the bottom o khe hollow mold 11. I`hereafter in a known manner, as has been previously herein described, a container is formed by means of a deep-draw-ing process with the aid of the hollow mold 11$ the con~ainer being made out of a thermoplastic foil material. The banderole-shaped strip 10, which adheres 5~j~
to ~he ex~erior wall of the container and annularly su-rrolmds it, is thus permanently seale~ to the wall of such container.
ln the meantime the glidably mounted slider 16 has returned to its first operative position so that with the introduction of a new banderole section into the inlet opening of the recess 17 a new sequence of the afore-described operative steps can be initiated.
For the further movement o:E the glidably mounted slider 16 into its operative position in the direction of the arrow 36 there is provided a drive mechanism 38. This drive mechanism is preferably a linear drive mechanism which has a reciprocating piston acting in the operative directions which is actuated by a pressure medium9 such as for example pressuriæed air.
With reference to Figures 6 and 7 there are illustrated advantageous embodi.ments of the cut~ing arrangement 28 for precutting the banderole-shaped s*rips 10 to a predetermined length. The embodiment of Figure 6 includes a first stationary member 37 having a cutting edge 31 in which a further second part 29 is rotatably mounted about an axis disposed in the plane of the strip 10, which part 29 has a centrally arranged guide slit 30 ~hich is adapted for guiding the strip 10 therethrough. Upon rotational movement of the rotatable part 39 the banderole-shaped strip 10 is cut at the cutting edge 31.
A particularly advantageous embodiment of a cutting arrangement 28 is schematically illustrated in Figure 7. Such arrangement includes a knife 32, which is arranged parallel to the outer surface of the slider and stationary relative to its movement and thereby during the further movement of the slider 16 into its second operative position the banderole-shaped strips is cut in the region of the funnel-shaped mouth of the recess 17. This embodiment dis-tinguishes itself by having only a few parts which makes it particularly reliable in operation.
~3~
It is possible without any particular degree of difficulty, as is schematically illustrated in Figure 8, to introduce banderole-shaped strips 10 into a plurality of hollow molds 11. In such arrangement for examp]e a row of a plurality of hollow molds 11 are arranged side-by-side. For this purpose, the slider 16 has a number of hollow molds 11 and a corresponding number of recesses 17 and projections 16' through which the banderole-shaped strips are guided.
Claims (16)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A deep drawing machine for manufacturing containers from thermoplastic sheet material by deep drawing followed by pressure forming in a hollow mold, said machine including insertion means for positioning a banderole-shaped strip section into the hollow mold prior to deep drawing of the sheet material, whereby when the container is formed by means of a pressure medium applied to the interior thereof the strip section is sealed onto the outer sur-face of the container:
wherein said insertion means comprises a winding mandrel having a profile that corresponds to the interior of said hollow mold to be received therein with a clearance that defines a guide channel around the winding mandrel;
the guide channel portion of the outer peripheral surface of the mandrel having a plurality of openings therein that are adapted to be placed in communication with a vacuum source;
means for feeding said strip section endwise into said guide channel and around said winding mandrel;
means to apply vacuum to said openings to draw the strip section against the surface of said winding mandrel;
means to move said hollow mold axially with respect to said winding mandrel to position said strip section at a predeter-mined axial location within said hollow mold;
means for releasing said strip section from said mandrel and means for engaging it to said hollow mold at said predeter-mined location.
wherein said insertion means comprises a winding mandrel having a profile that corresponds to the interior of said hollow mold to be received therein with a clearance that defines a guide channel around the winding mandrel;
the guide channel portion of the outer peripheral surface of the mandrel having a plurality of openings therein that are adapted to be placed in communication with a vacuum source;
means for feeding said strip section endwise into said guide channel and around said winding mandrel;
means to apply vacuum to said openings to draw the strip section against the surface of said winding mandrel;
means to move said hollow mold axially with respect to said winding mandrel to position said strip section at a predeter-mined axial location within said hollow mold;
means for releasing said strip section from said mandrel and means for engaging it to said hollow mold at said predeter-mined location.
2. A deep drawing machine according to claim 1 further comprising a slider including a slot-shaped recess of a size corresponding to said strip section, said slider being positioned adjacent said winding mandrel and guided to slide in a direction transverse to the axis of said hollow mold to and from a limiting position wherein said recess is in register with said guide channel;
said feeding means being operative to deliver the leading end of said strip section into said feed channel generally tangen-tially with respect to said winding mandrel and around the major portion of the periphery of the winding channel, the trailing portion of said strip section remaining in the recess of said slider;
said slider thereafter being displaceable away from its limiting position such that the trailing end of said strip section is drawn from said recess and can move into engagement with the winding mandrel.
said feeding means being operative to deliver the leading end of said strip section into said feed channel generally tangen-tially with respect to said winding mandrel and around the major portion of the periphery of the winding channel, the trailing portion of said strip section remaining in the recess of said slider;
said slider thereafter being displaceable away from its limiting position such that the trailing end of said strip section is drawn from said recess and can move into engagement with the winding mandrel.
3. A deep drawing machine according to claim 1 wherein the means for engaging said strip section to said hollow mold comprises a series of holes in the wall of said hollow mold, said holes being selectively connectable to a vacuum source.
4. A deep-drawing machine according to claim 2, wherein, at the exterior surface of the slider which faces away from the hollow mold said slot-shaped recess has a funnel-widened entry in order to facilitate the introduction of the banderole-shaped strip sections.
5. A deep-drawing machine according to claim 2, wherein the glidably mounted slider has a nose-shaped projection, which project perpendicularly relative to the axis of winding mandrel.
6. Deep-drawing machine according to claim 5, wherein the projection is disposed immediately adjacent to the recess in such a way that the side surface of the projection serves as a guide means for the banderole-shaped strip section.
7. Deep-drawing machine according to claim 6, wherein the winding mandrel has a cut-out, the dimensions of which in height and depth correspond to the projection.
8. Deep-drawing machine according to claim 5, 6 or 7, where-in the projection includes a recess in order not to hinder transfer of the slider into its second operative position wherein the forward end piece of the banderole-shaped strip abuts against the winding mandrel in the region of the opening.
9. Deep-drawing machine according to claim 1, wherein the glidably mounted slider is reciprocably movable between said first mentioned limiting position and a second limiting position wherein the recess of the slider is about on the level of a vacuum opening in the exterior peripheral surface of the winding mandrel.
10. Deep-drawing machine according to claim 9, wherein the slider has two stops projecting in the direction of the hollow mold, which are adapted to abut against the exterior surfaces of the hollow mold and limit the reciprocable movement of the slider in its corresponding two limiting positions.
11. Deep-drawing machine according to claim 10, wherein precise adjustment of the prevailing limiting position of the slider is achieved by at least one adjusting screw, which is rotatably mounted in the stop of the slider and can be fixedly mounted therein.
12. Deep-drawing machine according to claim 1, wherein the hollow mold is axially slidably movable between at least two oper-ative positions relative to the stationary winding mandrel, whereby in the first operative position an end surface of the winding mandrel forms the bottom of the hollow mold, and in the second operative position the rolled on banderole-shaped strip is released from said mandrel to be disposed against the inner wall of said hollow mould at said predetermined axial location whereat there are disposed openings for selective communication with a vacuum source.
13. Deep-drawing machine according to claim 1, wherein associated with said feeding means is a cutting arrangement for cutting the banderole-shaped strip section to a predetermined length.
14. Deep-drawing machine according to claim 13, wherein the cutting arrangement includes a rotatably arranged part having a centrally disposed guide slit for guiding the banderole-shaped strip section, and a fixedly arranged cutting edge.
15. Deep-drawing machine according to claim 2, wherein for cutting the banderole-shaped strip section to a predetermined length, a cutting arrangement is provided, which includes a knife fixedly arranged parallel to the exterior surface of the slider and which during movement of the slider away from its limiting posi-tion cuts the banderole-shaped strip section in the region of the entry of the recess.
16. Deep-drawing machine according to claim 13, wherein for movement of the glidably mounted slider there is provided a linear drive mechanism which includes a reciprocably movable piston actu-ated by a pressure medium.
14.
14.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813126904 DE3126904C2 (en) | 1981-07-08 | 1981-07-08 | Thermoforming machine for the production of a banderole-shaped strip section having containers from a thermoplastic film |
| DEP3126904.4-16 | 1981-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1198564A true CA1198564A (en) | 1985-12-31 |
Family
ID=6136387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000406796A Expired CA1198564A (en) | 1981-07-08 | 1982-07-07 | Deep drawing machine for manufacturing receptacles made out of thermoplastic foil material |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0069211B1 (en) |
| JP (1) | JPS5811125A (en) |
| CA (1) | CA1198564A (en) |
| DE (1) | DE3126904C2 (en) |
| ES (1) | ES513740A0 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008009706A1 (en) | 2008-02-18 | 2009-08-20 | Hassia Verpackungsmaschinen Gmbh | Device for feeding banderols |
| FR3013693B1 (en) * | 2013-11-25 | 2017-05-12 | Arcil | DEVICE FOR SUPPLYING DECORATIONS IN A DEVICE FOR INTRODUCING DECORATIONS. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1969306U (en) * | 1967-05-12 | 1967-09-28 | Hassia Verpakkungsmaschinen G | DEEP-DRAWING MACHINE WITH DEVICE FOR INSERTING A BANDEROLE-SHAPED STRIP IN A MOLD. |
| CH504949A (en) * | 1969-03-13 | 1971-03-31 | Intercan S A C O Fiduciaire Wa | Plant for manufacturing containers with complex walls for packaging food and / or pharmaceutical products |
| DE2363020C2 (en) * | 1973-12-19 | 1981-10-08 | Société d'Application Plastique, Mécanique et Electronique Plastimécanique S.A., Courbevoie | Thermoforming machine for the production of containers from thermoplastic film with device for inserting a band-shaped strip into a mold |
| DE2365028C3 (en) * | 1973-12-28 | 1983-11-24 | Société d'Application Plastique, Mécanique et Electronique Plastimécanique S.A., Courbevoie | Thermoforming machine for the production of containers from thermoplastic film with sealed band-shaped strip section |
| FR2340191A1 (en) * | 1976-02-04 | 1977-09-02 | Gatrun Anstalt | BANDEROLES MANUFACTURING AND DEPOSIT SYSTEM |
| DE2604789C3 (en) * | 1976-02-07 | 1980-11-20 | Societe D'application Plastique, Mecanique Et Electronique Plastimecanique S.A., Falaise (Frankreich) | Thermoforming machine for the production of containers from thermoplastic film with sealed, band-shaped strips |
| FR2342145A1 (en) * | 1976-02-24 | 1977-09-23 | Erca | Thermoformed plastics breakers with decorative strip - have square shape with rounded corners and are moulded directly onto strip |
-
1981
- 1981-07-08 DE DE19813126904 patent/DE3126904C2/en not_active Expired
-
1982
- 1982-04-30 EP EP19820103716 patent/EP0069211B1/en not_active Expired
- 1982-06-21 JP JP57105567A patent/JPS5811125A/en active Granted
- 1982-07-06 ES ES513740A patent/ES513740A0/en active Granted
- 1982-07-07 CA CA000406796A patent/CA1198564A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3126904C2 (en) | 1984-09-27 |
| JPH0340688B2 (en) | 1991-06-19 |
| ES8304472A1 (en) | 1983-03-16 |
| DE3126904A1 (en) | 1983-01-27 |
| JPS5811125A (en) | 1983-01-21 |
| EP0069211B1 (en) | 1985-10-09 |
| EP0069211A1 (en) | 1983-01-12 |
| ES513740A0 (en) | 1983-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3577700A (en) | Method and apparatus for producing container parts from sheet material | |
| DE2327286C2 (en) | Packaging device | |
| FI70547C (en) | FOERSTAERKNINGSREMSA FOERSEDD FOERPACKNING FOER FLYTANDE FYLLMEDEL | |
| JP2875396B2 (en) | Insert label supply method and apparatus | |
| DE2462125C3 (en) | Device for manufacturing packaging containers | |
| GB2054451A (en) | Making tubular plastics intermediate product and forming reclosable bags therefrom | |
| CA1152793A (en) | Method and apparatus for blanking, folding and inserting membrane into container covercap | |
| DE2034154C2 (en) | Device for the production of open-topped containers with composite walls | |
| US4335635A (en) | Device for severing and transferring a label | |
| US3272681A (en) | Apparatus for applying labels, platens or the like on hollow bodies | |
| NO811042L (en) | PROCEDURE AND DEVICE FOR MANUFACTURING A PLASTIC CONTAINER WITH A CLOSING DEVICE | |
| CA1198564A (en) | Deep drawing machine for manufacturing receptacles made out of thermoplastic foil material | |
| NL8101767A (en) | Machine for deep-drawing of truncated conical containers. | |
| US4452580A (en) | Deep drawing machine for manufacturing receptacles made out of thermoplastic foil material | |
| US4394115A (en) | Forming arrangement for machines making receptacles out of thermoplastic material | |
| SU1276251A3 (en) | Method for continuous production of hose-type article from elastic material in form of fabric panel and device for effecting same | |
| GB1590484A (en) | Production of sheet plastics material | |
| WO1996009155A1 (en) | Method and device for injection molding | |
| EP0660781B1 (en) | Method and apparatus for producing folders | |
| DE2640721C2 (en) | Device for producing the shell of cup-shaped containers | |
| DE69922809T2 (en) | DEVICE FOR MANUFACTURING A CONTAINER | |
| US3827128A (en) | Method for producing containers with composite walls | |
| EP3724083B1 (en) | Tool system for a packaging device and shaping unit for shaping shaped articles made of film | |
| US5707196A (en) | Cap making apparatus and method | |
| DE2850843A1 (en) | Moulding thermoplastic film containers with external strip covering - where strips are fed into moulds before moulding heated film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |