JPWO2008018547A1 - Container blow molding system and label holding core - Google Patents

Abstract

The container blow molding system 10 holds a rotary table 11 that holds a blow mold 40, a label holding core 20 that supplies a label 3 into the blow mold 40 held on the rotary table 11, and a preform 2 a. And a preform holding body 41 to be supplied into the blow mold 40. A preform holder 41 is fitted into the blow mold 40 of the turntable 11, and an air blowing device 43 is connected to the preform holder 41. The label holding core 20 is formed of a cylindrical body, and a concave portion 20d that is drawn inward is formed on one side surface. The label 3 is wound around the label holding core 20, and both end portions 3a of the label 3 are received in the recess 20d.

Description

  The present invention relates to a container blow molding system for molding a blow molded container having a label on a side surface, and a label holding core used in the container blow molding system.

Conventional technology

  Conventionally, a blow molding system for molding a blow molded container having a label on a side surface is known (see Patent Documents 1 to 3).

In these blow molding systems, a label is previously inserted into the blow mold, and then a preform (parison) is inserted into the blow mold, and air is supplied to the parison to supply the blow mold. The blow molded container is molded inside.
JP-A-5-8289 JP-A-2-184848 JP-A-3338018

  In recent years, a blow molded container has been required to have a high gas barrier property. For this reason, the blow molded container has a label having a gas barrier property, and such a label is wound around the entire side surface of the blow molded container. It is required to be attached.

  However, it is not easy to insert and hold a single wafer label having a length sufficient to cover the entire side surface of the container into a blow mold consisting of left and right split molds, and covers the entire side surface of the blow molded container. A molding system for a blow molded container having a label has not yet been developed.

  On the other hand, in the example of Japanese Patent Laid-Open No. 3380018, there is proposed a method of opening a sheet sealed in a cylinder in advance in a mold and attaching a preform to the mold. The process of mounting the preform in it after opening the label in the mold is complicated. In addition, this method limits the area to be labeled and cannot cover the entire area of the cylinder.

  The present invention has been made in consideration of such points, and the blow of a container capable of easily and reliably forming a blow molded container having a label covering the entire circumference of the side surface including the height direction of the container. An object is to provide a molding system and a label holding core.

  The present invention holds a plurality of blow molds and a rotatable rotary table, a label holding core that winds and holds labels and supplies the labels into the blow molds of the rotary table, and holds a preform. A preform holding / supplying unit that fits into the blow mold of the rotary table and supplies the preform into the blow mold, and an air blower connected to the preform holding / supplying unit that fits into the blow mold of the rotary table And a blow mold clamping device for clamping the blow mold, and the label holding core is formed of a cylindrical body that can be inserted into the blow mold. The container blow molding system.

  The present invention is a blow molding system for a container, characterized in that a concave portion for receiving both end portions of a retractable label is provided on one side surface of a cylindrical body.

  The present invention is a blow molding system for a container, characterized in that a pair of small cylindrical portions that form recesses are provided on the side surface of the label holding core.

  The present invention is a blow molding system for a container, characterized in that an adsorption portion for adsorbing a label is formed on a side surface of the label holding core.

  In the present invention, a preform molding unit for molding a preform is provided on the upstream side of the rotary table, and the preform molded by the preform molding unit is conveyed to the blow mold of the rotary table by the preform holding and supplying unit. A blow molding system for a container.

  The present invention is a blow molding system for a container, characterized in that a gate cut portion for cutting a preform gate is provided between the preform molding portion and the rotary table.

  The present invention is a blow molding system for a container, characterized in that a preform cooling section for cooling the preform is provided between the preform molding section and the gate cut section.

  The present invention is a blow molding system for a container, wherein a preform heating unit for heating the preform is provided between the preform molding unit and the rotary table.

  According to the present invention, the label holding core is held by a movable supply table that is close to the rotary table and movable, and a label molding supply unit that forms and supplies a label is disposed on the opposite side of the supply table from the rotary table. A blow molding system.

  The present invention is a container characterized in that the label forming supply unit includes a label cutting unit that cuts the label raw material to form a label, and a label supply unit that supplies the formed label to the label holding core of the supply table. This is a blow molding system.

  According to the present invention, the label cutting unit slits the label raw material fed in the horizontal direction in the feeding direction, and then cuts it perpendicularly to the feeding direction to form a label arranged in the horizontal direction. The container has a receiving part for holding the container horizontally, and a label rotating mechanism that supports the receiving part and rotates to supply the label to the label holding core in a vertical direction. System.

  The present invention is a blow molding system characterized in that an adsorption portion for adsorbing a label is provided on the inner surface of a blow mold.

  The present invention is the blow molding system in which the blow mold is heated and temperature-controlled.

  In the present invention, the label holding core is installed on the supply table via the label holding core pedestal, and the supply table is held on the outer periphery of the label holding core and the supply position where the label is supplied to the outer periphery of the label holding core. It is a blow molding system characterized in that it takes a transfer position where a label being transferred is transferred into a blow mold held by a rotary table.

  The present invention provides a label center presser that presses the center of the label supplied from the label molding supply unit to the outer periphery of the label holding core near the supply position of the supply table, and the outer periphery of the label holding core provided on both sides of the label center presser. The blow molding system is characterized in that a pair of winding rollers for winding the label around the outer periphery of the label holding core while being moved are provided so as to be movable up and down.

  The blow molding system according to the present invention is characterized in that a label tip presser that presses the leading end portion of the label against the label holding core is provided at a portion facing the label holding press against the label holding core so as to be movable up and down. It is.

  In the present invention, the label center presser, the pair of winding rollers, and the label front end presser are held by a liftable lifting platform, a positioning opening is provided in the label holding core base, and the positioning holder is inserted into the positioning opening. A blow molding system characterized in that a positioning pin is provided.

  In the present invention, the label holding core pedestal is movable with respect to the supply table via the positioning mount, and a positioning opening is provided in the label holding core pedestal, and the positioning opening in the vicinity of the transfer position of the supply table is within the positioning opening. A positioning plate having a positioning pin to be inserted is provided so as to be movable up and down, and a positioning roller is provided on the positioning plate so as to contact the outer periphery of the blow mold and determine the position of the positioning plate with respect to the blow mold. Molding system.

  In the present invention, the tip of the positioning pin has a tapered shape, and when the positioning pin is inserted into the positioning opening, the label holding core base moves relative to the supply table and the label holding core is moved against the blow mold. The blow molding system is characterized in that positioning is performed.

  The present invention is the blow molding system, wherein the positioning plate is pressed toward the blow mold by the pressing means.

  The present invention is a label holding core that holds a label and is inserted into a blow mold, and is formed of a cylindrical body that can be inserted into the blow mold. It is a label holding core characterized in that a recess is provided to receive both ends.

  The present invention is a label holding core characterized in that a pair of small cylindrical portions forming recesses are provided on the side surfaces of the label holding core.

  The present invention is a label holding core characterized in that an adsorption portion for adsorbing a label is formed on a side surface of the label holding core.

  As described above, according to the present invention, the label holding core is formed with recesses for receiving both end portions of the label, so that a label having a relatively long circumferential length can be inserted into the blow mold. Can do. For this reason, it is possible to easily and reliably form a blow-molded container whose substantially entire side surface is covered by using a label having a long circumferential length.

1A to 1E are schematic views showing a container blow molding system according to the present invention. FIG. 2 is an overall plan view showing a container blow molding system according to the present invention. FIG. 3 is a side view showing a supply table for holding a label holding core and a label forming supply unit. FIG. 4 is a plan view showing a supply table for holding a label holding core and a label forming supply unit. FIG. 5 is a side view showing a rotary table that holds a blow mold. FIG. 6 is a plan view showing a rotary table that holds a blow mold. FIG. 7 is a side sectional view showing a blow mold. FIG. 8 is a perspective view showing a label holding core. 9A and 9B are side cross-sectional views showing a blow molded container. FIG. 10 is a cross-sectional view showing a label holding core. Fig.11 (a) is a perspective view which shows the modification of a label holding core, FIG.11 (b) is the sectional drawing. FIGS. 12A and 12B are side views showing a mechanism for winding the label around the outer periphery of the label holding core. FIG. 13 is a cross-sectional view taken along line AA of FIG. 12B showing a mechanism for winding the label around the outer periphery of the label holding core. 14A and 14B are side views showing a mechanism for positioning the label holding core with respect to the blow mold. FIG. 15 is a plan view showing a mechanism for positioning the label holding core with respect to the blow mold.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 10 are views showing an embodiment of a container blow molding system and a label holding core according to the present invention.

  First, an outline of a blow molding system of a container and a blow molded container molded by this blow molding system will be described with reference to FIGS. 1 and 9A and 9B.

  As shown in FIGS. 1 and 9A and 9B, the blow molded container 1 is formed by biaxial stretch blow molding, and is wound around the container body 2 and the entire side surface of the container body 2. And a labeled label 3.

  In this case, as shown in FIG. 9A, the label 3 is wound around substantially the entire circumference of the side surface of the container body 2, and almost no gap is provided between both end portions of the label 3.

  Thus, since the label 3 can cover substantially the entire side surface of the container body 2, the gas barrier property of the entire blow molded container 1 can be improved by using the label 3 having a high gas barrier property.

  The blow molded container 1 shown in FIG. 9A has a label 3 that covers the entire circumference of the side surface of the container main body 2. However, in the blow molded container 1 shown in the comparative example of FIG. Does not cover the entire circumference of the side surface of the container body 2, and a large gap is formed between both ends of the label 3.

  The container body 2 of the blow-molded container 1 shown in FIG. 9A is obtained by biaxially stretching and blow-molding a PP preform. Further, the label 3 is made of OPP / Al / heat seal OPP having a heat sealable OPP as an adhesive surface.

  Next, an outline of a blow molding method using a container blow molding system according to the present invention will be described with reference to FIGS. First, as shown in FIG. 1A, a PP preform 2a is molded in a preform molding section 15 having preform molding dies 15a and 15b.

  The preform 2 a molded in the preform molding unit 15 is then held by the preform holder 41. The preform holder 41 is held and conveyed by the carrier 42. In this case, the preform holding part 19 is comprised by the preform holding body 41 and the conveyance body 42 (FIG. 2).

  The preform holding body 41 holding the preform 2a is transported to the heating unit 18 by the transport body 42, and the preform 2a is heated in the heating unit 18 (FIG. 1B).

  Next, with respect to the preform 2 a held by the preform holder 41, the blow mold 40 is lowered in the blow molding section 12, and the preform holder 41 is inserted into the blow mold 40. In this case, the label 3 is supplied in advance into the blow mold 40 by a label holding core 20 described later (FIG. 1C).

  Next, as shown in FIG. 1 (d), the air blowing device 43 rises and approaches from the lower side to the preform holder 41 inserted into the blow mold 40 located in the blow molding portion 12. In this way, the air blowing device 43 is connected to the preform holding body 41, air is supplied from the air blowing device 43 into the preform 2a, and the preform 2a is blown into the blow mold 40 by the air thus supplied. The blow molded container 1 is molded. At this time, in the blow mold 40, the blow molded container 1 comprising the container main body 2 made of the preform 2a and the label 3 wound around the entire side surface of the container main body 2 is formed by biaxial stretch blow molding. .

  Next, the blow mold 40 is lifted from the preform holder 41, and thus the blow molded container 1 having the label 3 on the preform holder 41 is obtained (FIG. 1 (e)).

  Next, the container blow molding system 10 according to the present invention will be described in detail with reference to FIG.

  The container blow molding system 10 holds the plurality of blow molds 40 as described above, and also winds and holds the rotatable rotary table 11 and the label 3, and supplies the label 3 into the blow mold 40 of the rotary table 11. And a preform holder for holding the preform 2a and fitting the blow mold 40 positioned in the blow molding portion 12 of the rotary table 11 to supply the preform 2a into the blow mold 40. 41 and an air blowing device 43 that is connectable to a preform holding body 41 that fits into a blow mold 40 located in the blow molding portion 12 of the rotary table 11.

  In addition, on the upstream side of the turntable 11, a preform molding portion 15 including a pair of preform molding dies 15a and 15b for molding the preform 2a is provided. On the downstream side of the preform molding unit 15, a preform cooling unit 16 that cools the preform 2 a molded by the preform molding unit 15 and a gate of the preform 2 a cooled by the preform cooling unit 16 are cut. A gate cut portion 17 is sequentially provided.

  The preform 2 a cooled by the preform cooling unit 16 and gate-cut by the gate cut unit is held by a preform holding body 41, and the preform holding body 41 is conveyed to the heating unit 18 by the conveyance body 42. . The preform holding body 41 and the conveying body 42 constitute a preform holding / supplying unit 19.

  The preform 2 a held by the preform holder 41 is transported to the heating unit 18 and heated by the heating unit 18. Thereafter, the preform holding body 41 holding the preform 2a is conveyed to the rotary table 11.

  By the way, the blow mold 40 held on the rotary table 11 is conveyed along with the rotation of the rotary table 11 so that the label 3 held by the label holding core 20 is supplied into the blow mold 40. It has become.

  That is, the supply table 13 is rotatably provided near the rotary table 11, and the label holding core 20 is held on the supply table 13. A label forming supply unit 21 that forms and supplies the label 3 is disposed on the opposite side of the supply table 13 from the rotary table 11.

  Next, the supply table 13 that holds the label holding core 20 and the label forming supply unit 21 will be described with reference to FIGS. 3 and 4.

  A supply table 13 is provided in the vicinity of the rotary table 11, and a label forming supply unit 21 for forming and supplying the label 3 on the opposite side of the supply table 13 from the rotary table 11 is provided.

  The label molding supply unit 21 includes a label original fabric supply unit 28 that supplies the label original fabric 22, a guide roller 31 that guides the label original fabric 22 supplied from the label original fabric supply unit 28, and a downstream side of the guide roller 31. A slitter 23 for forming a plurality of, for example, four strip-shaped label original fabrics 22, and a label original fabric 22 provided on the downstream side of the slitter 23 are cut. And a label cutting part 24 for forming the label 3.

  Further, a clamp 33 for holding the label original fabric 22 is provided on the downstream side of the label cutting part 24, and a receiving part for receiving the label 3 formed by the label cutting part 24 below the label cutting part 24 and the clamp 33. 25 is provided. By selecting the label cutting blade of the label cutting unit 24, the wavy and zigzag labels 3 can be formed.

  The receiving portion 25 can be rotated by a lever (rotating mechanism) 26 so that the label 3 held in the horizontal direction can be set up in the vertical direction. That is, the lever 26 is rotatably attached to a moving body 27 that is held by a base 35 so as to be movable in the width direction, and the receiving portion 25 that receives the label 3 can be rotated from a horizontal position to a vertical position. .

  Among these, a label supply unit is configured by the moving body 27 on the base 35, the lever 26, and the receiving unit 25, and a label forming unit is configured by the clamp 33 and the label cutting unit 24.

  A label holding core 20 is mounted on the supply table 13, and four label holding cores 20 are provided on one side of the supply table 13 and four on the other side of the supply table 13. Yes. The label holding core 20 on one side of the supply table 13 and the label holding core 20 on the other side can be separated from each other by a cylinder 32.

  By the way, when mounting a long label 3 that exceeds 360 ° from the vicinity of 360 ° of the outer peripheral length, the label holding core 20 is formed of a substantially cylindrical body as shown in FIG. 8 and FIG. A recess 20d is formed which is pulled inward and receives both end portions 3a of the label 3.

  That is, a pair of small cylindrical portions 20b and 20c are provided on the side surface of the label holding core 20, and a concave portion 20d for receiving both end portions 3a of the label 3 is formed between the pair of small cylindrical portions 20b and 20c. Further, a suction part (suction hole) 20 a for sucking and holding the label is provided on the side surface of the label holding core 20.

  As described above, since the concave portion 20d for receiving both end portions 3a of the label 3 is formed on the side surface of the label holding core 20, the label 3 is placed on the side surface of the label holding core 20 so that the both end portions 3a enter the concave portion 20d. Can be wound. For this reason, the label 3 can be wound with a relatively long label 3 in the circumferential direction by the label holding core 20 as compared with the case where there is no recess 20d.

  Further, when the label 3 is 180 ° or more and less than 360 ° (leaving a gap of 0 to 5 mm) that is relatively shorter than the outer peripheral length of the label holding core 20, the label holding core 20 has a cylindrical shape with suction holes 20 f provided on the outer periphery. A thing may be used (FIGS. 11A and 11B).

  Next, the blow mold 40 held by the rotary table 11 will be described with reference to FIGS.

  As shown in FIGS. 5 to 7, the rotary table 11 is provided with two to four sets of blow molds 40, and each set includes four blow molds 40. In FIGS. 5 to 7, four sets are shown. Also, in the case of four sets of four blow molds 40, the sets of blow molds 40 are arranged 90 ° apart from each other. On the other hand, in the case of two sets, the blow molds 40 are spaced apart by 180 °.

  Further, the blow mold 40 provided on the rotary table 11 is held by the holding plate 53 for every four sets. That is, the holding plate 53 that holds each set of blow molds 40 is movable in the vertical direction with respect to the rotary table 11 in the cylinder 50, and four holding plates 53 are provided on one holding plate 53 via the holding rod 51. The blow mold 40 is attached.

  A base 55 is provided below the rotary table 11, and the rotary table 11 is rotated by a servo motor 48 provided on the base 55.

  In FIG. 5, the right side of the turntable 11 is a blow molding part 12, and the left side of the turntable 11 is the label 3 wound around the label holding core 20 on the supply table 13 in the blow mold 40. It becomes the transfer part 13b to insert. Note that the supply table 13 has a supply portion 13a that supplies the label 3 to the label holding core 20 on the opposite side of the transfer portion 13b (see FIG. 4).

  As shown in FIG. 5, an air blowing device 43 is provided in a portion of the base 55 corresponding to the blow molding portion 12, and the air blowing device 43 is provided with a compressed air blowing port 43 a.

  Further, the base 55 is provided with a stretch rod 45 penetrating the air blowing device 43, and the stretch rod 45 is moved in the vertical direction by an elevating cylinder 45 a attached to the base 55. The stretch rod 45 is inserted into the preform 2a held in the blow mold 40, and presses the preform 2a against the blow mold 40 during blow molding.

  By the way, as shown in FIG. 7, the blow mold 40 has a cylindrical side nested mold 40a and a bottom nested mold 40c. The preform holder 41 for holding the preform 2a is adapted to be fitted into the side insert mold 40a of the blow mold 40 and the blow mold clamping device 140. The preform 2a is a preform holder. 41 and a blow mold clamping device 140 provided outside the preform holding body 41.

  Further, in FIG. 7, the above-described stretch rod 45 rises from the lower side to the upper side in the blow mold 40 to press the preform 2 a against the bottom insert mold 40 c of the blow mold 40. Yes. The blow mold 40 is heated as a whole to adjust the temperature.

  Next, the operation of the present embodiment having such a configuration will be described.

  As shown in FIG. 2, the preform 2a is molded in the preform molding section 15 having a pair of preform molding dies 15a and 15b.

  The preform 2 a molded in the preform molding unit 15 is cooled by the preform cooling unit 16.

  Next, the preform 2a is sent to the gate cut portion 17 and gate cut.

  The preform 2 a cooled by the preform cooling unit 16 and gate-cut by the gate cut unit is held by a preform holding body 41, and the preform holding body 41 is conveyed to the heating unit 18 by the conveyance body 42. .

  The preform 2 a held by the preform holder 41 is transported to the heating unit 18 and heated by the heating unit 18. Thereafter, the preform holding body 41 holding the preform 2a is conveyed to the rotary table 11.

  During this time, the blow mold 40 held on the rotary table 11 is conveyed along with the rotation of the rotary table 11, and the label 3 held by the label holding core 20 is supplied into the blow mold 40. Yes.

  Next, the operation of forming the label 3 and supplying the label 3 into the blow mold 40 will be described.

  First, as shown in FIGS. 3 and 4, the label 3 is formed in the label forming supply unit 21, and the label 3 thus formed is supplied to the label holding core 20 side.

  That is, in FIG. 3 and FIG. 4, the label original fabric 22 is supplied from the label original supply unit 28 of the label forming supply unit 21, and the label original 22 supplied from the label original supply unit 28 is guided by the guide roller 31. 31 is sent to the slitter 23 provided on the downstream side. In the slitter 23, the label original fabric 22 is slit in the conveyance direction, and a plurality of, for example, four strip-shaped original labels 22 are formed. The strip-shaped label original fabric 22 is then cut at a label cutting portion 24 provided on the downstream side of the slitter 23, and the label 3 is formed. At this time, the label fabric 22 is held at its tip by the clamp 33.

  Next, the label 3 formed by cutting the label original fabric 22 in the label cutting unit 24 is received by the label cutting unit 24 and the receiving unit 25 provided below the clamp 33.

  Next, the moving body 27 holding each receiving portion 25 moves in the width direction, the receiving portion 25 expands in the width direction, and then the label 3 whose receiving portion 25 rotates 90 ° and extends in the transport direction is The direction is changed and it is arranged in the width direction.

  Next, the label 3 on the receiving portion 25 is rotated by a lever (rotating mechanism) 26 to change the direction from the horizontal direction to the vertical direction.

  In this way, the orientation of the label 3 is changed from the horizontal direction to the vertical direction by the receiving portion 25, so that the label 3 is wound around the outer periphery of the four label holding cores 20 that are arranged in advance at the supply position of the supply table 13. It is done.

  In this case, since the suction portion 20 a is provided on the outer periphery of the label holding core 20, the label 3 is sucked and held by the suction portion 20 a of the label holding core 20.

  By the way, as described above, a pair of small cylindrical portions 20b and 20c are provided on the side surface of the label holding core 20, and a concave portion 20d for receiving both end portions 3a of the label 3 is formed between the pair of small cylindrical portions 20b and 20c. Has been.

  As described above, since the concave portion 20d for receiving both end portions 3a of the label 3 is formed on the side surface of the label holding core 20, the label 3 is placed on the side surface of the label holding core 20 so that the both end portions 3a enter the concave portion 20d. Can be wound. For this reason, the label 3 can be wound with a relatively long label 3 in the circumferential direction by the label holding core 20 as compared with the case where there is no recess 20d.

  Next, the supply table 13 is rotated by 180 °, and the four label holding cores 20 at the supply position 13a of the supply table 13 are sent to the transfer position 13b of the supply table 13, and the label holding core is transferred to the transfer position 13b. The label 3 held by 20 is inserted into the blow mold 40 and transferred.

  That is, four blow molds 40 held by the rotary table 11 are on standby in the transfer device 13b. When the label holding core 20 comes to the transfer position 13b, the blow mold 40 is lowered toward the label holding core 20 by the cylinder 50 provided on the rotary table 11, and the label 3 held by the label holding core 20 is blown. The label 3 is transferred from the label holding core 20 into the blow mold 40 by being inserted into the mold 40 and simultaneously or sequentially performing the suction release of the label holding core 20 and the suction action in the blow mold 40. Is done.

  At this time, the label 3 is sucked and held by suction holes or suction slits provided on the inner surface of the blow mold 40 or a combination thereof.

  In addition, as described above, the label 3 having a relatively long circumferential length can be held by the label holding core 20. For this reason, a label having a long circumferential length can be inserted into the blow mold 40 easily and reliably, and the substantially entire circumference of the blow molded container 1 can be covered with the label 3.

  Next, the rotary table 11 is rotated by the servo motor 48, and the blow mold 40 comes to the blow molding part 12 side. At this time, a preform holding body 41 holding the preform 2 a is disposed below the blow mold 40. Thereafter, the blow mold 40 and the preform holding body 41 are lowered, and the preform holding body 41 is fitted into an air blowing device 43 provided in a portion of the base 55 corresponding to the blow molding portion 12.

  Next, compressed air is supplied into the preform 2 a from a compressed air blowing port 43 a provided in the air blowing device 43.

  As described above, the base 55 is provided with the stretch rod 45 penetrating the air blowing device 43, and at the same time as the compressed air is supplied into the preform 2a, the stretch rod 45 is attached by the lifting cylinder 45a attached to the base 55. Move upward. The stretch rod 45 moved upward is inserted into the preform 2 a held in the blow mold 40 and presses the preform 2 a against the blow mold 40.

  In this way, the blow molded container 1 including the container body 2 with the label 3 adhered to the outer side surface in the blow mold 40 is obtained by biaxial stretch blow molding.

  In the present embodiment, the label 3 held by the label holding core 20 can be inserted into the blow mold 40, and the label holding core 20 is provided with a recess 20d for receiving both end portions 3a, 3a of the label 3. Therefore, the label 3 having a relatively long circumferential length can be inserted into the blow mold 40. For this reason, the substantially entire circumference of the blow molded container 1 can be covered with the label 3 having a long circumferential length.

  Next, a mechanism for winding the label 3 delivered to the receiving portion 25 of the label forming supply portion 21 around the outer periphery of the label holding core 20 disposed on the supply table 13 will be described in detail with reference to FIGS. 3, 12, and 13.

  As shown in FIGS. 3, 12, and 13, the label 3 delivered to the receiving part 25 of the label molding supply part 21 is wound around the outer periphery of the label holding core 20 arranged on the supply table 13.

  In this case, the direction of the receiving portion 25 is changed by the lever 26 from the horizontal direction to the vertical direction. The label holding core 20 is arranged on the supply table 13 via a label holding core base 65. The label holding core pedestal 65 supports and fixes the label holding core 20 and can be moved with respect to the supply table 13 via the positioning mount 66 to finely adjust its position.

  By the way, the supply table 13 includes a supply position 13a where the label 3 is supplied from the label forming supply unit 21 to the outer periphery of the label holding core 20, and a blow where the label 3 held on the outer periphery of the label holding core 20 is held on the rotary table 11. The transfer position 13b to be transferred into the mold 40 can be taken (see FIG. 4).

  As shown in FIGS. 12 and 13, an elevating table 60 is provided in the vicinity of the supply position 13 a of the supply table so as to be movable up and down. Further, a label center presser 61 that presses the center portion of the label 3 sent from the receiving portion 25 to the lifting platform 60 against the outer periphery of the label holding core 20, and arranged on both sides of the label center presser 61 along the outer periphery of the label holding core 20. A pair of winding rollers 62a and 62b for winding the label 3 around the outer periphery of the label holding core 20 while moving are provided. Further, the lifting platform 60 is provided with a label tip presser 63 for pressing both end portions (tip portions) of the label 3 against the label holding core 20 at a portion facing the label center presser 61 with respect to the label holding core 20. Yes.

  The label center retainer 61, the pair of winding rollers 62a and 62b, and the label end retainer 63 are provided on the lifting platform 60 via drive cylinders 61S, 62S, and 63S, and are driven by the drive cylinders 61S, 62S, and 63S, respectively. The

  The label holding core base 65 and the positioning mount 66 are moved up and down with respect to the supply table 13 by a drive cylinder 66S. The label holding core base 65 is provided with a positioning opening 65a, and the lifting base 60 is provided with a positioning pin 64 having a tapered shape at the lower end 64a and being inserted into the positioning opening 65a.

  12 and 13, when the supply table 13 reaches the supply position 13a, the label holding core base 65 at the position shown in FIG. 12A is first driven by the drive cylinder 66S to reach the position shown in FIG. 12B. To rise.

  Next, the receiving portion 25 to which the label 3 has been delivered is rotated by 90 ° by the lever 26 and the direction thereof is changed from the horizontal direction to the vertical direction, and the label 3 on the receiving portion 25 comes into contact with the outer periphery of the label holding core 20. . The receiving portion 25 has a pair of suction portions 25a and 25b, and the label 3 is sucked and held by the pair of suction portions 25a and 25b.

  Next, the lifting platform 60 descends, the positioning pins 64 of the lifting platform 60 are inserted into the positioning openings 65 a of the label holding core base 65, and the label holding core base 65 is attached to the supply table 13 via the positioning mount 66. The label holding core pedestal 65 is accurately positioned with respect to the supply table 13 and the lifting platform 60 by moving slightly.

  At this time, the label center presser 61 and the pair of winding rollers 62a and 62b are in the space 25c between the pair of suction portions 25a and 25b.

  Next, the label center presser 61 is driven by the drive cylinder 61 </ b> S to press the center portion of the label 3 against the outer periphery of the label holding core 20.

  Thereafter, the suction operation of the pair of suction portions 25a and 25b is stopped, and the receiving portion 25 is rotated by 90 ° as a whole by the lever 26 and is separated from the label holding core 20 and returned to the original position.

  Next, the pair of winding rollers 62a and 62b is driven by the drive cylinder 62S and moves along the outer periphery of the label holding core 20, and the label 3 is wound around the outer periphery of the label holding core 20 by the pair of winding rollers 62a and 62b. . Thereafter, the label front end press 63 is driven by the drive cylinder 63S to press the front end portion of the label 3 against the label holding core 20. Thereafter, the label 3 is sucked and held on the outer periphery of the label holding core 20, the pair of winding rollers 62a and 62b are returned to their original positions by the drive cylinder 62S, and the label center presser 61 and the label front end press 63 are driven by the drive cylinders 61S and 63S. Separate from the label holding core 20. The shape of the label tip presser 63 can be selected as appropriate. In the case of a label holding core having a recess 20d as shown in FIG. 10, a triangular prism shape suitable for pushing is used.

  Next, the lifting platform 60 is raised and returned to the original position, and the label holding core base 65 is lowered and returned to the original position.

  In this way, the label 3 on the receiving portion 25 can be accurately and reliably wound around the outer periphery of the label holding core 20.

  Next, a mechanism for positioning the label holding core 20 with respect to the blow mold 40 will be described in detail with reference to FIGS. 5, 14, and 15. As shown in FIGS. 5, 14, and 15, the label holding core 20 around which the label 3 is wound is inserted into the blow mold 40.

  In this case, the label holding core 20 is arranged on the supply table 13 via the label holding core base 65. The label holding core pedestal 65 supports and fixes the label holding core 20 and can be moved with respect to the supply table 13 via the positioning mount 66 to finely adjust its position.

  By the way, the supply table 13 includes a supply position 13a where the label 3 is supplied from the label forming supply unit 21 to the outer periphery of the label holding core 20, and a blow where the label 3 held on the outer periphery of the label holding core 20 is held on the rotary table 11. The transfer position 13b to be transferred into the mold 40 can be taken (see FIG. 4).

  As shown in FIGS. 14 and 15, a positioning plate 72 is provided in the vicinity of the transfer position 13 b of the supply table 13 so as to be movable up and down. The label holding core base 65 has a positioning opening 65a, and the positioning plate 72 is provided with a pair of positioning pins 73a and 73b inserted into the positioning opening 65a. A shape is formed.

  The positioning plate 72 is provided with a pair of positioning rollers 71 a and 71 b that abut the outer periphery of the blow mold 40 and determine the position of the positioning plate 72 with respect to the blow mold 40.

  Further, the positioning plate 72 is pressed toward the blow mold 40 by the drive cylinder 72S.

  14 and 15, when the supply table 13 comes to the transfer position 13b, the blow mold 40 is first lowered. Next, the positioning plate 72 is driven by the drive cylinder 72 </ b> S, and the pair of positioning rollers 71 a and 71 b abut on the outer periphery of the blow mold 40. In this way, the position of the positioning plate 72 is determined with respect to the blow mold 40.

  Next, the label holding core pedestal 65 and the positioning mount 66 are driven by the drive cylinder 66S and lifted. At this time, the positioning pins 73a and 73b of the positioning plate 72 are inserted into the positioning openings 65a of the label holding core pedestal 65, and the label holding core pedestal 65 moves slightly with respect to the supply table 13 via the positioning mount 66, and blows. The label holding core 20 is positioned with respect to the mold 40.

  In this way, the label holding core 20 can be accurately positioned with respect to the blow mold 40, whereby the label 3 held on the outer periphery of the label holding core 20 is inserted into the blow mold 40 with high accuracy. can do.

Claims (23)

A rotary table that holds a plurality of blow molds and is rotatable,
A label holding core that winds and holds the label and supplies the label into the blow mold of the rotary table;
A preform holding and supplying unit that holds the preform and that fits into the blow mold of the rotary table and supplies the preform into the blow mold;
An air blowing device connected to a preform holding and feeding unit that fits into a blow mold of a rotary table;
A preform holding and supplying unit holding the preform, and a blow mold clamping device for clamping the blow mold,
A container blow molding system, wherein the label holding core is a cylindrical body that can be inserted into a blow mold.   2. A blow molding system for a container according to claim 1, wherein a concave portion for receiving both end portions of the pull-in label is provided on one side of the side surface of the cylindrical body.   The container blow molding system according to claim 2, wherein a pair of small cylindrical portions that form recesses are provided on a side surface of the label holding core.   The container blow molding system according to claim 2, wherein an adsorption portion for adsorbing the label is formed on a side surface of the label holding core. A preform molding part for molding a preform is provided on the upstream side of the rotary table,
2. The blow molding system for a container according to claim 1, wherein the preform molded by the preform molding unit is conveyed to the blow mold of the rotary table by the preform holding and supplying unit.   6. The container blow molding system according to claim 5, wherein a gate cut portion for cutting a gate of the preform is provided between the preform molding portion and the rotary table.   7. The container blow molding system according to claim 6, wherein a preform cooling part for cooling the preform is provided between the preform molding part and the gate cut part.   6. The blow molding system for a container according to claim 5, wherein a preform heating unit for heating the preform is provided between the preform molding unit and the rotary table. The label holding core is held by a supply table that is close to the rotary table and movable,
The blow molding system according to claim 1, wherein a label molding supply unit that forms and supplies a label is disposed on the supply table opposite to the rotary table.   The label forming supply unit includes a label cutting unit that cuts a label raw material to form a label, and a label supply unit that supplies the formed label to a label holding core of a supply table. Container blow molding system. The label cutting part cuts the label raw material sent in the horizontal direction, forms the label arranged in the horizontal direction,
The label supply unit includes a receiving unit that holds the label in a horizontal direction, and a label rotating mechanism that supports the receiving unit and rotates to supply the label to the label holding core in a vertical direction. The blow molding system for a container according to claim 10.   The blow molding system according to claim 1, wherein an adsorption portion for adsorbing a label is provided on an inner surface of the blow mold.   2. The blow molding system according to claim 1, wherein the blow mold is heated and temperature-controlled. The label holding core is installed on the supply table via the label holding core pedestal,
The supply table is a supply position where the label is supplied from the label forming supply unit to the outer periphery of the label holding core, and the transfer that the label held on the outer periphery of the label holding core is transferred into the blow mold held by the rotary table. The blow molding system according to claim 9, wherein the blow molding system is adapted to take a position.   A label center presser that presses the center of the label supplied from the label molding supply unit to the outer periphery of the label holding core near the supply position of the supply table, while moving along the outer periphery of the label holding core provided on both sides of the label center presser The blow molding system according to claim 14, wherein a pair of winding rollers for winding the label around the outer periphery of the label holding core are provided so as to be movable up and down.   16. The blow molding according to claim 15, wherein a label tip presser that presses the tip end portion of the label against the label holding core is provided at a portion facing the label center presser with respect to the label holding core so as to be movable up and down. system. The label center presser, the pair of winding rollers, and the label tip presser are held on a lifting platform that can be raised and lowered.
The blow molding system according to claim 16, wherein a positioning opening is provided in the label holding core base, and a positioning pin inserted into the positioning opening is provided in the lifting platform. The label holding core pedestal is movable with respect to the supply table via the positioning mount, and the label holding core pedestal is provided with a positioning opening,
A positioning plate having positioning pins inserted into the positioning openings is provided in the vicinity of the transfer position of the supply table so as to be movable up and down. The positioning plate abuts on the outer periphery of the blow mold and positions the positioning plate relative to the blow mold. 15. The blow molding system according to claim 14, further comprising a positioning roller for determining.   The tip of the positioning pin is tapered, and when the positioning pin is inserted into the positioning opening, the label holding core base moves with respect to the supply table to position the label holding core with respect to the blow mold. The blow molding system according to claim 18.   19. The blow molding system according to claim 18, wherein the positioning plate is pressed toward the blow mold by the pressing means. In the label holding core that holds the label and is inserted into the blow mold,
It consists of a cylinder that can be inserted into the blow mold,
A label holding core characterized in that a recess is provided on one side surface of the cylindrical body to receive both ends of the retracted label inward.   The label holding core according to claim 21, wherein a pair of small cylindrical portions that form recesses are provided on a side surface of the label holding core.   The label holding core according to claim 21, wherein a suction part for sucking the label is formed on a side surface of the label holding core.

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