KR20120119326A - Apparatus of manufacturing foldable pet bottles - Google Patents

Abstract

PURPOSE: PET bottle manufacturing equipment for integrally combining a preform and a handle is provided to reduce initial costs for constructing the equipment and improve the quality of finished products by integrating a preform cap crystallization step and a PET bottle blowing step into a single step. CONSTITUTION: PET bottle manufacturing equipment for integrally combining a preform and a handle comprises a blowing unit(800) and a handle supply unit(950). The blowing unit biaxially stretches a preform. The handle supply unit supplies handles to the blowing unit for coupling the handle and the preform into a single body.

Description

Apparatus of manufacturing foldable PET bottles combining the preform and the handle integrally

The present invention relates to a PET bottle manufacturing apparatus for integrally combining the preform and the handle, and integrally performing a crystallization step of heating the preform stopper to increase hardness and a blowing step of biaxial stretching after heating the preform body. It relates to a PET bottle manufacturing apparatus characterized in that to form a PET bottle by integrally coupling the handle to the preform body.

In general, the PET bottle manufacturing method is to produce a PET bottle by stretching (biaxially stretching) in the longitudinal and transverse directions after injection molding a polyester chip into a test tube-type PET preform (hereinafter referred to as a preform). Therefore, it is divided into room temperature filling (bottle water bottle, soy sauce bottle) and high temperature filling (juice bottle, green tea bottle, etc.), and the normal temperature filling PET bottle is generally manufactured by simultaneously molding preform injection molding and blowing. High-temperature filling PET bottles must have a high PET bottle hardness when the contents are filled at temperatures above 88 ° C. Unlike PET bottles for normal temperature filling, the PET bottle can be prevented from being deformed by filling the crystallization (heat treatment) step to increase the hardness of the bottle cap. When manufacturing PET bottles for high temperature filling, a separate device for crystallizing (heat treatment) the PET bottle cap is required. To be installed to operate the bottle stopper portion crystallizer.

In order to manufacture the PET bottle for high temperature filling as described above, because the stopper crystallization step, it is not possible to manufacture the finished product in a single facility as in the manufacture of PET bottle for room temperature filling, and because it must go through a multi-step process, In comparison, the initial capital investment cost is high, the manufacturing cost is high due to the multi-stage manufacturing method, the installation space is largely required, and the quality of logistics is difficult due to the increase of logistics movement.

On the other hand, the conventional PET bottle is mainly used as a beverage container, the volume was mostly less than 2 liters. However, as PET bottles are used not only as containers for soy sauce, soybean paste and kimchi, but also as containers for grains and buckets, demand for large bottles of more than 5 liters is increasing rapidly.

The first priority to be solved when producing a large volume of PET bottles is to form a handle to lift the container. This is because, if the bottle contains about 10 liters of contents, the container cannot be lifted or transported without the proper handle.

Conventionally, the handle of a large-capacity PET bottle cannot be formed in the PET bottle itself, but has been formed in the cap of the PET bottle. However, the handle formed on the lid has a limit on the load it can withstand, and thus the volume of the PET bottle increases, the heavier the weight of the contents contained in the PET bottle, as well as the inconvenience in use, reveals problems in the robustness.

In addition, in the case of a large-capacity PET bottle, even if a handle is formed on the lid, it is necessary to further include a handle on the body of the PET bottle. For example, if you have a bottle of 5 liters or more, you can use the two hands to take out the contents inside without the handle, but if you have a handle, you can take out the contents using one hand.

However, in the related art, although a PET bottle having a handle shape is manufactured as a preform, there is no production of a PET bottle in which the preform and a separate handle are integrally combined.

The present invention integrates the preform stopper crystallization step and the PET bottle blowing step separated in the PET bottle manufacturing line for high temperature filling into one process, significantly lowering the initial capital investment cost and increasing the manufacturing cost reduction and the logistics movement process increased by the multi-step manufacturing method. In order to improve the quality of the product by reducing the number, in particular to provide a PET bottle manufacturing apparatus that enables the integral combination of the preform and a separate handle.

An object of the present invention as described above in the PET bottle manufacturing apparatus comprising a blowing unit for biaxially stretching the preform, the preform is biaxially stretched by supplying a handle to the mold of the blowing unit for biaxially stretching the preform At the same time is achieved by a PET bottle manufacturing apparatus for integrally coupling the handle with the preform, characterized in that it comprises a handle supply unit for integrally coupled to the outer side of the biaxially stretched preform.

Here, the handle and the transfer hole for the longitudinal direction; A conveying hole for transversing the handle; And first and second fixing jaws formed above and below the handles so that the preform (P) is biaxially stretched in the mold so as to be caught and fixed to the outer side of the preform (P).

In addition, the handle supply unit and the handle guide rail for supplying the handle in a free-falling manner guides the movement; A longitudinal conveying device which clamps the handle by using a conveying hole for the longitudinal conveyance of the handle supplied from the handle guide rail and conveys the downward direction; A handle transfer device inserted into a transfer hole for transverse transfer of the handle supplied through the longitudinal transfer device to clamp the handle and to position the mold in a blowing unit for biaxially stretching the preform P; Characterized in that comprises a.

And the PET bottle manufacturing apparatus, the preform supply unit consisting of a rotating guide plate for guiding the preform to be supplied and transported freely falling and the preform supplied by the inclined guide rail at regular intervals and conveyed; ; A heating unit mounted on each of the preforms supplied by the preform supply unit, and transported to each other, and a stopper portion of the transferred preform is crystallized and a body portion of the preform is heated and provided; A first transfer unit for transferring the preform heated by the heating unit; A blowing unit for biaxially stretching the preform supplied by the transfer unit and simultaneously coupling a handle to the outside of the proform; A second transfer unit collecting and transferring the PET bottle completed by the blowing unit; And a discharge unit for discharging the finished PET bottle provided by the second transfer unit.

The present invention integrates the preform stopper crystallization step and the PET bottle blowing step separated in the PET bottle manufacturing line for high temperature filling into one process, significantly lowering the initial capital investment cost and increasing the manufacturing cost reduction and the logistics movement process increased by the multi-step manufacturing method. The effect is to improve the quality of the finished product.

In addition, the present invention can be firmly mounted to the PET bottle by the molding method of integrating a separate handle with the preform, and thus there is an advantage that the large-capacity PET bottle can be used with one hand and is firm.

1 is a plan view of a PET bottle manufacturing apparatus according to the present invention,
Figure 2 is a right side view of the PET bottle manufacturing apparatus according to the present invention is a partial right side view to remove the unnecessary parts,
3 is an enlarged view of FIG.
4 to 9 is a view showing a schematic configuration and operation relationship of the handle supply unit according to the present invention,
10 is a view showing a conversion process from a preform to a PET bottle according to the present invention,
11 is a detailed plan view of the PET bottle manufacturing apparatus according to the present invention,
12 is a partial front view of FIG. 11;
FIG. 13 is a partial right side view of FIG. 11;
14 is a detailed view of the preform supply unit according to the present invention,
15 is a right side view of the heating unit according to the present invention;
16 is a detailed view of the mounting unit according to the present invention;
17 is a detailed view of the first and second transfer units according to the present invention;
18 is a detailed view of a blowing unit according to the invention.

The present invention relates to a PET bottle manufacturing apparatus comprising a blowing unit 800 for biaxially stretching the preform (P), and the crystallization step of increasing the hardness by heating the preform stopper (P1) and the preform body (P2) After the heating is performed integrally performing the blowing step of biaxial stretching, in particular, the PET bottle manufacturing apparatus, characterized in that to form the PET bottle 1000 by integrally coupling the handle 990 to the preform body portion (P2) will be.

To this end, in the present invention, when the preform P is biaxially stretched by the blowing unit 800, the preform P is biaxially coupled so that the handle 990 is integrally coupled to the outside of the preform P at the same time. It characterized in that it comprises a handle supply unit 950 for supplying a handle 990 to the mold 802 of the blowing unit 800 for stretching.

The handle 990 is a transport hole (996) for longitudinal transport; A transfer hole 995 for lateral transfer of the handle 990; And first and second fixing jaws (991, 992, 993, 994) formed above and below the handle (990) so that the preform (P) is biaxially stretched in the mold (802) to be caught and fixed to the outside of the preform (P). do.

The handle supply unit 950 guides the handle 990 to guide the movement and the handle guide rail 970 for supplying freely falling; Longitudinal conveying device 988 for clamping the handle 990 by using a conveying hole 996 for the longitudinal conveyance of the handle 990 supplied from the handle guide rail 970, and conveying downward; ; It is inserted into the conveying hole 995 for the transverse conveyance of the handle 990 supplied through the longitudinal conveying device 988 to clamp the handle 990, and to biaxially stretch the preform (P) And a handle transfer device 982 positioned in the mold 802 of the blowing unit 800.

And the PET bottle manufacturing apparatus for guiding the preform (P) to be supplied and transported inclined guide rail 101 and the preform (P) supplied by the inclined guide rail 101 at equal intervals to transport the free fall. A preform supply unit composed of a rotary feed plate 103; The preform P supplied by the preform supply unit is mounted to each other, and the stopper portion P1 of the preform P to be transferred is crystallized, and the body portion P2 of the preform P is heated and provided. A heating unit 200; A first transfer unit 760 for transferring the preform P heated by the heating unit 200 to the blowing unit 800; A second transfer unit 770 which collects and transfers the finished PET bottle 1000 to which the handle 990 is coupled by the blowing unit 800 and the handle supply unit 950; And a discharge unit 900 for discharging the completed PET bottle 1000 provided by the second transfer unit 770.

Hereinafter, with reference to the accompanying drawings showing a preferred embodiment of the present invention will be described in detail.

1 is a block diagram of the main configuration of the present invention, the present invention is largely divided into a preform supply unit, a heating unit 200, the first and second transfer units (760, 770), blowing unit 800, discharge unit 900 and the handle supply unit 950.

Here, the preform supply unit, the heating unit 200, the first and second transfer units (760, 770), the blowing unit 800 and the discharge unit 900 is a 'high temperature filling PET bottle manufacturing applicant filed previously The configuration is the same as or similar to that of the apparatus' (application number: 10-2009-0018413).

As shown in FIGS. 1 and 12, the preform supply unit guides the preform P and moves the inclined guide rail 101 to free fall, and the preform P supplied by the inclined guide rail 101. It is configured to include a rotary conveying plate 103 for aligning and feeding at equal intervals.

The heating unit 200 mounts and feeds each of the preforms P supplied by the preform supply unit, and the stopper portion P1 of the transferred preforms P is crystallized and the body portion of the preforms P ( P2 is a configuration that is provided by heating, as shown in Figures 1, 11, 12, 15, the mounting cam 513, the escape cam 512, preform mounting unit (SPU), preform body heating device (BHB) And a preform body heating lamp BLP, a cooling unit 505, a plug heating device CHB, a plug heating lamp CLP, and the like.

The first transfer unit 760 is configured to transfer the preform P heated by the heating unit 200 to the blowing unit 800 (see FIG. 17), and the second transfer unit 770 is blown. By the unit 800 and the handle supply unit 950 is a configuration for collecting the completed PET bottle 1000 is coupled to the handle 990 to the discharge unit 900.

Discharge unit 900 is a configuration for discharging the completed PET bottle 1000 provided by the second transfer unit 770, as shown in Figure 11 the rotating shafts (911,912), discharge rotation guides (921,922) and The discharge guide 940 is included.

As shown in FIG. 2, the handle 990 includes a transfer hole 996 for longitudinal transfer, a transfer hole 995 for transverse transfer of the handle 990, and the preform P. The first and second fixing jaws 991, 992, 993, 994 are formed at upper and lower sides of the handle 990 so as to be caught and fixed to the outside of the preform P when being biaxially stretched at 802.

The handle supply unit 950 guides the movement of the handle 990 as illustrated in FIGS. 2 to 9, and provides a handle guide rail 970 for supplying in a free fall manner, and the handle guide rail 970. Longitudinal conveying device 988 and the longitudinal conveying device 988 for clamping the handle 990 by using a conveying hole 996 for the longitudinal conveyance of the handle 990 is conveyed downward; The mold of the blowing unit 800 for clamping the handle 990 and biaxially stretching the preform P is inserted into the transport hole 995 for the transverse conveyance of the handle 990 supplied through the mold. And a handle transfer device 982 positioned at 802.

Specifically, the handle guide rail 970 is formed as shown in Figure 2 to guide the movement of the handle 990 and at the same time supply in a free-falling manner. And the lower end adjacent to the end of the handle guide 990 of the handle guide rail 970 is provided with a support for preventing the free fall of the handle 990, which is omitted in the drawings.

Accordingly, the handle 990 is guided through the handle guide rail 970 and freely falls but is supported by the support part.

And the longitudinal conveying device 988 is a longitudinal rod pin 987 is inserted into the longitudinal conveying hole 996 of the handle 990 supported by the supporting portion as shown in Figure 4 to 7 And a longitudinal guide rail 989 and a longitudinal conveying rail 988a for guiding the handle 990 inserted into the rod pin 987 to the handle conveying apparatus 982 stably.

The handle conveying apparatus 982 is inserted into the conveying hole 995 for the transverse conveyance of the handle 990 supplied through the longitudinal conveying apparatus 988, and a transverse rod pin for clamping the handle 990 ( 983 and a handle conveying device guide rail 981 for positioning the handle 99 clamped to the transverse rod pin 983 to the mold 802, thereby stably holding the handle 990. It is placed in the mold 802.

The blowing unit 800 is configured to biaxially stretch the preform P, and as shown in FIG. 12, the base mold 801, the body mold 802, the mold opening preventing device 803, and the high pressure nozzle cylinder. 804, longitudinally extending rod 805, longitudinally extending servomotor 806, sliding unit 807, high pressure cooling valve 808, high pressure secondary valve 809, high pressure primary valve 810, exhaust valve (811), mold opening prevention device operating cylinder 812, base mold upper, í ~ operating cylinder 813, silencer 814, mold opening and closing link 815, longitudinally extending servomotor drive pulley (817), belt tension Adjusting roller 818, timing belt 819, mold mounting unit 820, mold opening and closing rotary shaft 821, mold opening and closing rotary shaft roll ¬¬ 822, exhaust valve operation cylinder 830, high pressure primary valve operation cylinder 831, high pressure secondary valve operation cylinder 832, high pressure cooling valve operation cylinder 833, and high pressure hose 834 for cooling.

Hereinafter, an operation relationship of the present invention will be described with reference to FIGS. 1 to 18.

The main motor 701 of FIG. 11 uses the gear 702 and the timing belt 719 to form the first and second transfer units 760 and 770, the rotation shafts 711, 712, 713, 714, 911, 912, and the three-dimensional cam rotation shaft 715 of the discharge unit 900. To drive.

The heating unit 200 and the rotary feed plate 103 of the preform supply unit are driven by the servomotor 211, the helical gearbox 212, the power transmission rotation shaft 213, and the preform entry rotation shaft 102 (FIG. 11). And FIG. 14).

14, 15 and 17, the inclined guide rail 101 transfers the preform P supplied from the preform supply device (separately) to the rotary transfer plate 103 in a free-fall form, and rotates the transfer plate 103. ) Arranges the preforms P at equal intervals and supplies them to the heating unit 200. The preform P supplied by the rotary transfer plate 103 is transferred by the mounting unit SPU to the preform stopper heating device CHB of the heating unit 200. The mounting method of the mounting unit (SPU) is a method in which the insertion mechanism 603 compressed by the compression spring 609 is forcibly inserted into the preform P while being separated from the preform mounting cam 513. The preform P inserted into the mounting unit SPU is transferred by horizontal and vertical transfer mechanisms 508 for crystallizing the preform stopper portion P1 and heating the body portion P2. At the same time, the preform P is rotated by the rotating unit 504 for rotating the preform P while transferring the preform stopper heating device CHB which crystallizes the preform stopper P1 as the first process. The preform stopper P1 is crystallized. And while the preform body portion P2 passes through the preform body portion heating device BHB, a preform body portion P2 heating process, which is a second process for blowing, is performed. Here, the preform stopper heating device (CHB) for performing the crystallization process of the preform stopper (P1), which is the first process, and the preform body heating device (BHB) for heating the preform body (P2), which is the second process, It is necessary to pay attention to the feature that the structure is arranged to reduce the thermal characteristic change of the preform body portion P2 due to heat during the crystallization process, which is the first process.

15 and 16, the preform stopper portion P1 is first heated to form a crystallized tissue, and then the preform stopper portion P1 that is crystallized and heated while heating the preform body portion P2 is cooled in a cooling unit. By simultaneously cooling by 505, the process time can be shortened, and the preform during transfer can be used by using the hybrid insertion mechanism 603 incorporating the conventional blowing exclusive insertion mechanism 601 and the preform crystallization insertion mechanism 602. Falling can be prevented, and stable dimensions can be ensured, which allows the preform (P) crystal and blowing mixing process.

The cooling process after the preform stopper P1 crystallization structure is formed to prevent deformation of the preform stopper P1 due to high heat after the preform crystallization step, and the cooling method is a water inlet 531 and an air inlet 501. Dimensional stability was secured by installing a preform stopper cooling device 511 having a composite structure of water cooling and air cooling using an aluminum material having excellent circulation structure and excellent thermal conductivity.

Referring to FIGS. 15 and 16, the preform passing through the preform stopper heating device CHB turns the preform stopper P1 into a crystallized preform CP, and then passes through the preform body heating device BHB. Body portion P2 is a suitable temperature (95 ~ 130 ℃) to blow, and in order to transfer the preform in this state to the blowing unit 800, the preform must be separated from the preform mounting unit (SPU), such a departure The method may be formed in various forms, but is detached by contacting the roller 605 of the preform mounting unit (SPU) with the preform release cam 512 as shown in FIG. 6.

Referring to FIGS. 16 and 17, the first transfer unit 760 is used as a means for transferring the preform P separated from the preform mounting unit SPU to the blowing unit 800. It is a drive mechanism of a rotation method using a planar cam 763 to change the position of the three-dimensional cam 765 to change the rotational feed speed of the preform, the power transmission is a timing belt (power transmission from the main motor 701) 719).

Here, the three-dimensional cam 765 for varying the rotational feed rate of the preform is in the shape of a bone cam, the roller 764 passes through the cam shape, the speed is changed according to the position, the planar cam 763 varying the position of the preform The cam is a plate-shaped cam, the roller 762 on the rim of the cam to change the position of the preform by the rotation of the friction, the preform is mounted by a preform mounting grip 751 with a tension spring 761 attached It is transferred to the blowing unit 800.

Referring to FIGS. 16, 2, and 3, when the preform is transferred to the blowing unit 800, the base mold 801 is raised → the handle 990 is inserted → the body mold 802 is closed → the mold opening prevention device 803 is raised → lowering of the high pressure nozzle cylinder 804 → lowering of the longitudinal drawing rod 805 → primary lateral stretching by compressed air pressure (5 to 15 kg / cm2) → secondary lateral stretching by compressed air pressure (25 to 40 kg / cm2) → The finished PET bottle 1000 is manufactured in which the handle 990 is integrally combined in the process of discharging the residual air pressure inside the bottle.

In the process, the base mold 801 raising and lowering operation is operated by the operation cylinder 813 and the signal comes out of the control panel and receives the signal to operate the solenoid valve to move up and down, and open and close the body mold. The operation consists of a link 815 plate connected to the rear surface of the mold mounting unit 820 and a rotating shaft 821 and a roller 822 connected thereto, the longitudinal feeder 988 of the handle supply unit 950, The handle conveying apparatus 982 receives the handle 990 from the handle guide rail 970 and positions the handle 990 on the body mold, and the roller 822 contacts and rotates the cam 740 to rotate the link. 815 is operated to perform the opening / closing operation of the mold holding unit 820, and each of the molds 802 and 802 'operates with a phase difference of 180 degrees, and the lowering and raising operation of the high pressure nozzle cylinder 804 is performed by the base gold direction ( Same method of operation It is operated by the furnace control panel, and the longitudinal stretching by lowering the longitudinal stretching rod 805 is very important to the quality of securing the speed and alignment of the longitudinal stretching according to the variety. ) And the sliding unit 807 are integrally formed.

In the lateral stretching process using compressed air, a weak primary pressure (5 to 15 kg / cm2) is supplied first, and then the handle 990 is combined with the final molding at the strong secondary pressure (25 to 40 kg / cm2). At this time, the supply of compressed air is supplied by the primary pressure supply valve and the secondary pressure supply valve, the operation of which consists of an air cylinder for operating the primary pressure supply valve through the control panel and an air cylinder for operating the secondary pressure supply valve, In the cooling process to prevent deformation of the product after blowing, when the cooling valve 833 is opened, the compressed air is introduced into the mold through the longitudinally extending rod 805, and at this time, the exhaust valve is opened at the same time and the compressed air is released through the silencer 814. After securing the dimensional stability through cooling by the air flow is transferred to the discharge unit (900).

The transfer for discharging the finished product is made by the second transfer unit 770 operated in the same manner as the first transfer unit 760, and the description thereof is replaced with the description of the first transfer unit 760 and omitted. Let's do it. Although not shown, an overload protection device (torque meter) is mounted on the rotating shaft to protect the equipment in the event of a load.

Next, the discharge of the completed PET bottle 1000 is transferred to the discharge guide 940 by the discharge feed rotation shafts 911 and 912 and the discharge rotation guides 921 and 922, and the driving thereof is driven by the timing belt 719. ) In conjunction with

The present invention is not limited to the embodiment as described above, and of course, various modifications can be made without departing from the scope of the following claims.

P: preform P1: preform stopper
P2: Preform Body CP: Crystallization Preform
SPU: Preform Mounting Unit B: Base
CHB: preform plug heater
CLP: Preform stopper heating lamp
BHB: Preform Body Heating
BLP: Preform Body Heating Lamp
101: inclined guide rail 103: rotary feed plate
200: heating unit 760: first transfer unit
770: second transfer unit 800: blowing unit
900: discharge unit 950: handle supply unit
970: handle guide rail 981: handle feed guide rail
982: handle feed 990: handle
991,993: first fixed jaw 992,994: second fixed jaw

Claims (4)

In the PET bottle manufacturing apparatus comprising a blowing unit 800 for biaxially stretching the preform (P),
Blowing for biaxially stretching the preform P such that the handle 990 is integrally coupled to the outside of the preform P at the same time when the preform P is biaxially stretched by the blowing unit 800. PET bottle manufacturing apparatus for integrally combining the handle with the preform, characterized in that it comprises a handle supply unit (950) for supplying the handle (990) to the mold (802) of the unit (800). The method of claim 1,
The handle 990 is a transport hole (996) for longitudinal transport;
A transfer hole 995 for lateral transfer of the handle 990; And
First and second fixing jaws (991, 992, 993, 994) formed above and below the handle (990) so that the preform (P) is biaxially stretched in the mold (802) to be caught and fixed to the outside of the preform (P);
PET bottle manufacturing apparatus for integrally combining the preform and the handle, characterized in that comprises a. The method of claim 2,
The handle supply unit 950 guides the movement of the handle 990 and the handle guide rail 970 to supply in a free-falling manner;
Longitudinal conveying device 988 for clamping the handle 990 by using a conveying hole 996 for the longitudinal conveyance of the handle 990 supplied from the handle guide rail 970, and conveying downward; ;
It is inserted into the conveying hole 995 for the transverse conveyance of the handle 990 supplied through the longitudinal conveying device 988 to clamp the handle 990, and to biaxially stretch the preform (P) A handle feeder 982 positioned in the mold 802 of the blowing unit 800;
PET bottle manufacturing apparatus for integrally combining the preform and the handle, characterized in that configured to include a. The method of claim 1,
The inclined guide rail 101 for guiding the supplied preform P and freely falling, and the rotating transfer plate 103 for aligning and feeding the preform P supplied by the inclined guide rail 101 at equal intervals. Preform supply unit consisting of;
The preform P supplied by the preform supply unit is mounted to each other, and the stopper portion P1 of the preform P to be transferred is crystallized, and the body portion P2 of the preform P is heated and provided. A heating unit 200;
A first transfer unit 760 for transferring the preform P heated by the heating unit 200 to the blowing unit 800;
A second transfer unit 770 which collects and transfers the finished PET bottle 1000 to which the handle 990 is coupled by the blowing unit 800 and the handle supply unit 950; And
A discharge unit 900 for discharging the completed PET bottle 1000 provided by the second transfer unit 770;
PET bottle manufacturing apparatus that combines the preform and the handle integrally comprising a.

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