KR102260061B1 - A method for manufacturing a plastic bottle with a handle, a manufacturing device according to the same, and a plastic bottle manufactured thereby - Google Patents

Abstract

The present invention relates to a method for manufacturing a PET bottle with a handle, a manufacturing apparatus thereof, and a PET bottle manufactured thereby. According to the present invention, the method comprises: a preform supply step of supplying a preform; a preform heating step of heating the supplied preform; a preform input step of putting the heated preform into a mold device; a handle input step of inserting a handle into the mold device to mutually combine the handle and the preform; a molding preparation step of fixing the preform and the handle by closing the mold device; a forming step of stretching the preform by high-pressure air and a stretching rod to manufacture a PET bottle so that the preform and the handle are integrally formed; and a PET bottle discharging step of withdrawing a completed PET bottle from a mold. According to an embodiment of the present invention, a PET bottle with a handle can be quickly manufactured through a step-by-step process, and thus manufacturing efficiency can be maximized.

Description

A method for manufacturing a plastic bottle with a handle, a manufacturing device according to the same, and a plastic bottle manufactured thereby}

The present invention relates to a method for manufacturing a plastic bottle having a handle, an apparatus for manufacturing the same, and a PET bottle manufactured thereby.

It is common for a handle to be introduced to a container in which a large-capacity content of about 1 liter or more is stored, such as a soy sauce bottle and an edible oil bottle, so as to enhance user convenience.

As a technology related to the handle of such a bottle-type container, there is Patent Registration No. 10-0691697 (pinch grip type bottle-type container), which divides and forms a finger-receiving recess in the body of the container body, and uses this as a grip part for the container There is proposed a bottle-type container for holding a bottle, a so-called pinch grip type bottle-type container.

However, the storage capacity of this type of container is reduced by that much due to the grip part, and it is inconvenient because of the relatively insufficient strength for a woman at home to hold the grip part with one hand and discharge the contents, which is inconvenient, and there is a risk of damage to the body such as the wrist. It belongs to a product group that is not widely used because it is constantly exposed to the product, and there is a problem that the contents may be spilled by missing the bottle.

Meanwhile, as another prior art, there is Korean Patent Publication No. 10-2008-0018175 (a handle for a container, a container with a handle, and a manufacturing method thereof), which includes a container with a handle that can be filled with a liquid such as tea, especially in a high temperature state It relates to a heat-resistant container with a handle that can be filled without deformation of the container, and a method for manufacturing the same, wherein the cross-sectional shape of the body is substantially rectangular, and between the handle and the wall around the convex portion for attaching the handle in the recess. Provided a container with a handle and a method for manufacturing the same, which improves the blow moldability by providing a void in the container and does not cause problems such as cracking, cracking, wrinkling, deformation, and thickness imbalance due to improper elongation in the container and handle. have.

However, since this publication does not present a technology related to the introduction of a PET handle made of the same material as a PET bottle, problems such as separation and collection still remain.

As another prior art, there is Patent Publication No. 10-2008-0013582 (Gwanggu PET container equipped with a handle), which contains viscous products such as starch syrup, red pepper paste, and seasoning or liquid products such as soy sauce and vinegar in a PET container. In the case of storage, a wide-sphere PET container is presented with a handle that is fixed with a separate handle and the inlet of the container is widened for convenient use, but this is also a technology related to the introduction of a PET handle made of the same material as a PET bottle. Even if it is assumed that a PET handle is adopted, it has a problem that the manufacturing cost increases as much as the PET handle must be assembled separately after the PET bottle is completed.

Another prior art is Korean Patent Laid-Open No. 10-2003-0036566 (Manufacturing method of a liquid container), which includes a synthetic resin in a first mold for forming a preform having an external protrusion and a first receiving recess therein. manufacturing the preform by extruding and supplying; Seating the preform inside a second mold for forming a final molded body of a predetermined shape by expansion of the preform and coupling an inlet of the preform to a blow injector; manufacturing the final molded body by blowing wind into the first accommodating recessed part of the preform through the blow injector; and separating the final molded body from the second mold, whereby the liquid container manufactured by providing a structure in which the handle is integrated in the preform manufacturing step is provided after completion of the final molded product container. It is possible not only to solve the inconvenience of separately manufacturing and attaching, but also to simplify the manufacturing process of the liquid container and increase productivity.

However, since the preform (preform) in which the handle is integrally injection-molded is subjected to reheating of the preform for the subsequent blow process, it is heated to the handle and is easily deformed in the transport process, etc. It is a technology that is difficult to use.

1. Republic of Korea Patent No. 10-1667207 (2016.10.18)

An object of the present invention is to provide a method for manufacturing a plastic bottle having a handle that can maximize production efficiency by quickly manufacturing a PET bottle with a handle through a step-by-step process.

Another object of the present invention is to provide a PET bottle manufacturing apparatus having a handle that can easily withdraw the second clamp through the second clamp insertion and removal groove even after the mold apparatus is closed.

Another object of the present invention is to provide a plastic bottle having a handle that can produce a solid product by allowing the preform and the handle to be integrally combined during the blowing process.

The PET bottle manufacturing method of the present invention for achieving the above object,

A preform supply step of supplying a preform equipped with a lid coupling portion to the preform heating device via the preform supply device;

a preform heating step of receiving the preform from the preform supply device and heating the remaining portion except for the lid coupling part of the preform through the preform heating device;

a preform input step of injecting the preform discharged from the preform heating device into an open mold device via the preform input device so that the lid coupling part protrudes from the upper part of the mold device;

a handle input step of inserting the handle into the preform by moving the handle to the lower part of the preform through the handle inserting device in the open state of the mold device and then moving it upward;

a molding preparation step of closing the mold device in a state in which the preform and the handle are combined to fix the preform and the handle;

In a state where the preform and the handle are fixed through the mold device, the preform input device and the handle input device are moved to their original positions, and the blowing device is detachably coupled to the preform protruding from the upper part of the mold device and then stretched with high-pressure air. A molding step of manufacturing a plastic bottle so that the preform and the handle are integrally formed by stretching the preform through the rod;

A plastic bottle discharging step of opening the mold device while holding the lid coupling part of the plastic bottle protruding to the upper part of the mold device via the bottle discharging device and then withdrawing the plastic bottle with a handle from the mold device; characterized by comprising: .

The PET bottle manufacturing apparatus of the present invention for achieving the above object,

a mold device for holding the shape of the preform that is opened and closed by a power source and blown; a preform input device for putting the heated preform into the mold device; A blowing device for manufacturing a plastic bottle by stretching the preform through high-pressure air and a stretching rod; In the PET bottle manufacturing device equipped with a PET bottle discharging device for withdrawing the manufactured PET bottle from the mold device,

The mold device is divided into a first body, a second body, and a lower body, so that the first body and the second body are hinge-connected to open and close via an axis, and the inner upper end of the preform injected through the preform input device when closed A preform attaching part for wrapping and fixing a part is integrally formed, and on the surface where the first body and the second body are abutted to each other, a handle mounting part for fixing the handle by being removably inserted into the handle to be inserted at the time of closing is integrally formed, and the handle mounting part that the second clamp insertion and removal grooves open to the outside are integrally formed with the interposed therebetween;

In a state in which the handle is moved and placed on the lower part of the preform, the handle is moved upward to fit into the preform, and when the mold device is closed, the handle insertion device that is separated from the mold device through the second clamp insertion and removal groove is further reinforced to be; characterized by

Here, the preform input device,

a first clamp capable of gripping the heated preform;

a first rotating means for rotating the first clamp about a horizontal axis (X);

a first forward and backward movement means for moving the first rotation means forward and backward;

It is characterized in that it consists of a second rotation means for rotating the first forward and backward movement means about the vertical axis (Y) to move in the lateral direction.

Here, the PET bottle discharging device,

a third clamp capable of holding the plastic bottle;

a third forward and backward movement means for moving the third clamp forward and backward;

It is characterized in that it is composed of a third rotation means for rotating the third forward and backward movement means about the vertical axis (Y) to move in the lateral direction.

The PET bottle of the present invention for achieving the above object,

In a state in which the preform and the handle of the same material are coupled to each other, the upper end and the lower end of the ring-shaped rim constituting the handle are covered in the process of blowing the preform, and in addition, a plurality of stepped portions extending from the inner circumferential surface of the ring-shaped rim portion are wrapped to form a chin It is characterized in that the handle is made to form an integral part not to be separated.

According to the present embodiment, it is possible to quickly manufacture a PET bottle with a handle through a step-by-step process, thereby maximizing manufacturing efficiency.

In addition, as the second clamp insertion/removal groove is formed in the mold device, when the mold device is closed (closed), the second clamp is accommodated in the second clamp insertion/removal groove, thereby fundamentally preventing interference with the mold device. Since the handle is held until the device is closed (closed), the combination of the preform and the handle can be stably maintained. After the mold device is closed, the second clamp can be easily pulled out through the second clamp insertion/removal groove. There are advantages that can be

In addition, the PET bottle of the present invention extends toward the center from the inner peripheral surface of the ring-shaped rim portion and has an arc-shaped stepped portion radially disposed based on the center of the ring-shaped rim portion. As the preform is stretched (expanded), the handle is wrapped around the stepped portion. It is possible to fundamentally solve the problem that the handle is separated from the PET bottle as well as the rotation of the bottle is limited.

1 and 2 are schematic and block diagrams of a method for manufacturing a PET bottle having a handle according to the present invention.
Figure 3 is a schematic view showing an apparatus for manufacturing a PET bottle having a handle according to the present invention.
Figures 4a and 4b is a view for explaining the process of putting the preform into the mold device using the preform input device in the PET bottle manufacturing apparatus having a handle according to the present invention.
5 is a view for explaining the process of coupling the handle to the preform using the handle input device in the PET bottle manufacturing apparatus having a handle according to the present invention.
6A to 6C are views for explaining the process of completing a PET bottle using a blowing device in the PET bottle manufacturing apparatus having a handle according to the present invention.
7 is a view for explaining a process of withdrawing a PET bottle using a PET bottle discharging device in the device for manufacturing a PET bottle having a handle according to the present invention.
8 is a view showing a PET bottle with a handle according to the present invention.

Hereinafter, it will be described in detail based on the accompanying drawings.

1 and 2 are schematic and block diagrams of a method for manufacturing a PET bottle with a handle according to the present invention, and FIG. 3 is a schematic view showing an apparatus for manufacturing a PET bottle with a handle according to the present invention.

1 to 3, the method for manufacturing a PET bottle having a handle according to an embodiment includes a preform supply step (S1) and a preform heating step (S2), a preform input step (S3), a handle input step (S4), It consists of a molding preparation step (S5), a molding step (S6), and a PET bottle discharging step (S7), and below, each step and apparatus used for each step will be described together.

1) Preform supply step (S1)

The preform supply step (S1) is a step of supplying a preform (P) having an opening (P1) and a lid coupling part (P2) to the preform heating device (B) via the preform supply device (A), and initially the opening It is supplied to the preform heating device (B) with (P1) facing upward.

For reference, a ring-shaped stepped portion (plunge) is integrally provided at the lower end of the lid coupling portion P2, and this stepped portion (plunge) is later formed with preform attachment portions 311 and 321 mold device 300. is placed on the top surface of

The preform (P) supplied as described above is then disposed and transported on the transfer conveyor (CV) constituting the preform heating device (B) in a state in which the opening (P1) is turned over to face downward.

Since the preform supply device (A) is a well-known technique in the field, a detailed description thereof will be omitted.

2) Preform heating step (S2)

The preform heating step (S2) is a step of heating the preform (P) transferred along the transfer conveyor (CV) via the heater (Ht) constituting the preform heating device (B), in more detail, FIG. As shown in 1, the remaining portion of the preform (P) except for the lid coupling portion (P2) is heated.

For reference, the preform (P) is rotated (rotated) in place while the preform (P) is transported along the transfer conveyor (CV) so that it can be evenly heated by the heat of the heater (Ht) during the molding operation. It is advantageous.

The heater (Ht) may be installed to face each other based on the transfer conveyor (CV), may be installed only on one side with respect to the transfer conveyor (CV).

3) Preform input step (S3)

In the preform input step (S3), the preform (P) discharged from the preform heating device (B) is put into the mold device 300 opened via the preform input device 100, but the lid coupling part of the preform (P) (P2) is a step of protruding into the upper portion of the mold apparatus 300.

4A and 4B are diagrams for explaining a process of putting a preform into a mold apparatus using a preform input device in a PET bottle manufacturing apparatus equipped with a handle according to the present invention, which will be described with reference to the following.

When the preform (P) heated by the heater (Ht) is transferred through the transfer conveyor (CV), the preform input device 100 serves to put the heated preform (P) into the mold device 300 .

The preform input device 100 of this embodiment is composed of a first clamp 110 , a first rotation means 120 , a first forward and backward movement means 130 , and a second rotation means 140 .

The first clamp 110 is a claw-shaped member that is split into two, and is used for holding the preform (P) in the present embodiment.

In the first clamp 110, the claw-shaped members split into two are interconnected via a coil spring. When the claw-shaped members are spread apart, the coil spring is stretched, and when the gap is released, the coil spring is restored. The claw-shaped members are pulled against each other by pulling them.

For example, when the first clamp 110 is pushed toward the outer circumferential surface of one end of the preform (P) (the portion to which the lid is coupled), the claw-shaped members that were facing each other are opened to the inside of the preform (P). One end is retracted, and the outer peripheral surface of the preform (P) is fixed while being pressed by the force to restore the coil spring stretched in this process.

The first rotating means 120 is a known servomotor, and in this embodiment, the first clamp 110 is rotated about the horizontal axis X to the position of the preform P (the opening of the preform facing downward is upwards). It serves to invert).

The first forward/backward moving means 130 is a known actuator such as a linear motor and a hydraulic/pneumatic cylinder, and in this embodiment, the first rotating means 120 is advanced by the first clamp 110 to hold the preform (P). To be able to grip, on the contrary, by retracting the first rotation means 120 serves to separate the first clamp 110 from the preform (P).

The second rotation means 140 is a known servo motor like the first rotation means 120 , and in this embodiment, the first forward and backward movement means 130 , the first rotation means 120 , and the first clamp 110 . ) together to rotate about the vertical axis (Y) so that the heated preform (P) bitten by the first clamp (110) is put into the open mold device (300).

When the preform P heated by the preform input device 100 is put into the mold device 300 , the handle H is then put into the mold device 300 by the handle input device 200 .

4) Handle input step (S4)

In the handle input step (S4), the handle (H) is moved to the lower portion of the preform (P) via the handle input device (200) in the state in which the mold device (300) is opened, and then is moved upward to move the preform (P) ) is the step of inserting the handle (H).

5 is a view for explaining a process of coupling the handle to the preform using the handle input device in the apparatus for manufacturing a PET bottle having a handle according to the present invention, which will be described with reference to the following.

The handle inserting device 200 serves to couple the handle (H) to the preform (P) injected into the mold device (300) (a form that is inserted into the outer circumferential surface and surrounds the preform).

The handle inserting device 200 of this embodiment is composed of a second clamp 210 , a second forward and backward movement means 220 , and a lifting means 230 .

The second clamp 210 is a known hydraulic/pneumatic gripper, and in the present embodiment, the claw portion is closed or spread by receiving a power source (hydraulic/pneumatic) from the outside to hold or release the handle H.

The second forward/backward moving means 220 is a known actuator such as a linear motor or a hydraulic/pneumatic cylinder, and serves to advance or retreat the second clamp 210 in the present embodiment.

The lifting means 230 is a known actuator such as a linear motor and a hydraulic/pneumatic cylinder. In this embodiment, the second clamp 210 and the second forward and backward movement means 220 move up and down. do.

As an example, when a handle H having a ring-shaped rim portion H1 and a gripping portion H2 integrally formed with a stepped portion H3 on the inner circumferential surface is supplied from the handle supply device (not shown), the second forward and backward movement means The second clamp 210 is advanced by 220, and the advanced second clamp 210 receives the power source to grip the handle H.

When the second clamp 210 grips the handle H as described above, the second clamp 210 is retracted by the second forward and backward movement means 220, and accordingly, the handle H is the second clamp (210) will move with.

In the state moved as described above, the second clamp 210 and the second advance/retreat moving means 220 are moved downward by the lifting means 230 so that the upper surface of the handle H is relatively higher than the lower surface of the preform P. It is preferable to be positioned further below, in order to avoid interference with the preform (P) when the handle (H) is advanced later.

In the moved state as described above, the second clamp 210 is advanced by the second forward/backward moving means 220, and as the second clamp 210 moves forward, the handle H is also moved and the handle H It is preferable to make the center of the ring-shaped rim portion H1 of the preform P coincide with the center of the vertical axis of the preform P, which is later in the process of coupling the handle H and the preform P to each other. This is to prevent damage by fundamentally blocking the contact between the preforms (P).

In the state moved as described above, the second clamp 210 and the second advancing and retreating means 220 are moved upward by the lifting means 230, and in the process of moving upward, the ring-shaped rim portion of the handle H ( H1) is fitted around the preform (P) and surrounds the preform (P).

When the preform (P) and the handle (H) are coupled to each other by the preform input device 100 and the handle input device 200, the mold device 300 that has been opened is closed while the preform (P) and the handle (H) are closed. is fixed in a combined state.

5) Forming preparation step (S5)

The molding preparation step (S5) is a step of fixing the preform (P) and the handle (H) by closing the mold apparatus 300 in a state in which the preform (P) and the handle (H) are combined.

The mold apparatus 300 is divided into a first body 310, a second body 320, and a lower body 330, and the first body 310 and the second body 320 are hinged through an axis. and is opened and closed by an opening/closing motor (not shown).

The inner upper end of the first body 310 and the second body 320 has a part of the preform (P) heated when it is closed, that is, a semicircular shape that wraps around and fixes the lower end based on the stepped portion provided at the lower end of the lid coupling portion (P2) of the preform attachment parts 311 and 321 are integrally formed, and on the surfaces facing each other, the handle mounting parts 312 and 322 for fixing the handle H by being removably inserted into the inserted handle H at the time of closing are integrally formed, and the handle mounting part is integrally formed. The second clamp insertion and removal grooves 313 and 323 open toward the handle inserting device 200 are integrally formed so that the second clamp 210 can be withdrawn even when closed with the (312, 322) interposed therebetween.

For example, when the mold device 300 that has been opened (opened) is closed (closed), the lid coupling part P2 of the preform P is disposed to protrude upward of the mold device 300, and the lid coupling part ( Some of the remaining parts except for P2) are accommodated in the mold apparatus 300 and are wrapped and fixed by the preform attachment parts 311 and 321 .

In addition, the ring-shaped rim portion H1 constituting the handle H is accommodated in the mold device 300, the grip portion H2 is accommodated by being fitted in the handle mounting portions 312 and 322, and the grip portion fitted in the handle mounting portions 312 and 322. A part of (H2) is exposed through the second clamp insertion and removal grooves (313, 323).

In particular, as the second clamp insertion and removal grooves 313 and 323 are formed in the mold apparatus 300 as described above, when the mold apparatus 300 is closed (closed), the second clamp 210 is inserted into the second clamp insertion and removal grooves 313 and 323. Since it is accommodated, it is possible to fundamentally prevent interference with the mold device 300, and accordingly, the preform (P) and the handle (H) are held by the handle (H) until the mold device 300 is closed (closed). The coupled state can be stably maintained, and after the mold device 300 is closed, the second clamp 210 can be easily withdrawn through the second clamp insertion and removal grooves 313 and 323 .

On the other hand, when the preform (P) and the handle (H) are fixed by the closing of the mold device 300, the preform input device 100 and the handle input device 200 are respectively the preform (P) and the handle (H). is released and returns to the initial state.

6) Forming step (S6)

The molding step (S6) is heated through the high-pressure air and the stretching rod 340 supplied through the blowing device 300' in a state in which the preform (P) and the handle (H) are fixed to the mold device 300 . A step of manufacturing the plastic bottle PB so that the preform P and the handle H are integrally formed by stretching (expanding) the preform P, which will be described in detail as follows.

6A to 6C are views for explaining the process of completing a PET bottle using a blowing device in the PET bottle manufacturing apparatus having a handle according to the present invention, which will be described with reference to the following.

The blowing device 300 ′ is disposed so as to be elevating on the upper portion of the mold device 300 , and is detachably inserted into the lid coupling portion P2 protruding from the upper portion of the mold device 300 to remove it from the compressor (not shown). It serves to stretch (expand) the heated preform (P) through the supplied high-pressure air and the stretching rod 340 .

As shown in FIG. 6A , when the mold device 300 is closed, and the PET bottle inserting device 100 and the handle inserting device 200 are returned to their initial states, respectively, the mold device 300 is disposed on top of the The blowing device 300' is moved downward, and is detachably coupled to the lid coupling portion P2 of the preform P, as shown in FIG. 6b.

The high-pressure air supplied through the blowing device 300' in the coupled state as shown in FIG. 6b is provided to the inside of the preform (P), whereby the preform (P) is stretched (expanded), along with the stretching rod 340 helps the stretching (expansion) of the preform (P) as it descends in accordance with the stretching (expansion) speed of the preform (P), which is illustrated as shown in FIG. 6C .

Finally, a plastic bottle with a handle is completed by the process as described above.

Since the molding method as described above is a well-known technique in the relevant field, a detailed description thereof will be omitted.

7) PET bottle discharging step (S7)

The PET bottle discharging step (S7) is a step of discharging the completed PET bottle PB in the mold device 300 using the PET bottle discharging device 400, which will be described in more detail as follows.

7 is a view for explaining a process of withdrawing a PET bottle using a PET bottle discharging device in the PET bottle manufacturing apparatus having a handle according to the present invention, which will be described with reference to the following.

The PET bottle discharging device 400 serves to withdraw the completed PET bottle PB from the mold device 300 .

The PET bottle discharging device 400 of this embodiment is composed of a third clamp 410 , a third forward and backward movement means 420 , and a third rotation means 430 .

The third clamp 410 is a bifurcated claw-shaped member. In this embodiment, the third clamp 410 is used for holding the lid coupling portion P2 of the plastic bottle PB protruding from the upper portion of the mold apparatus 300 . do.

In the third clamp 410, the claw-shaped members split into two are interconnected via a coil spring. When the claw-shaped members are spread apart, the coil spring is stretched. When the split is released, the restoring force of the coil spring The claw-shaped members are pulled against each other by pulling them.

As an example, when the third clamp 410 is pushed toward the lid engaging portion P2 of the plastic bottle PB, the claw-shaped members that were facing each other open each other and the lid engaging portion of the plastic bottle PB inside ( P2) is introduced, and the outer peripheral surface of the cap coupling part P2 of the PET bottle PB is fixed while being pressed by the force to restore the coil spring stretched in this process.

The third forward and backward movement means 420 is a known actuator such as a linear motor and a hydraulic/pneumatic cylinder, and in this embodiment, the third clamp 410 is advanced to grip the PET bottle PB, and vice versa. 3 It serves to retract the clamp 410 to be separated from the PET bottle (PB).

The third rotating means 430 is a known servomotor, and in this embodiment, the third forward and backward movement means 420 and the third clamp 410 are rotated together about the vertical axis Y to the third clamp 410 . ) serves to deliver the bitten PET bottle (PB) to the discharge conveyor (not shown).

The aforementioned pad bottle inserting device 100, the handle inserting device 200, the blowing device 300 and the PET bottle discharging device 400 are controlled and controlled through a control unit such as a microcomputer.

8 is a view showing the PET bottle (PB) completed by the above steps, which will be described with reference to the following.

When the preform (P) is stretched (expanded) through high-pressure air and the stretching rod 340 in a state in which the preform (P) and the handle (H) are coupled to each other, the process of stretching (expanding) the preform (P) In the ring-shaped rim portion (H1) of the handle (H), it is protruded to cover the upper and lower surfaces, so a step is naturally formed. to be united with

In particular, the PET bottle PB of the present invention extends from the inner circumferential surface of the ring-shaped rim portion H1 toward the center and is radially arranged with respect to the center of the ring-shaped rim portion H1 (H3: see FIG. 3). As an example, as the preform (P) wraps around the stepped portion (H3) in the process of stretching (expanding), the rotation of the handle (H) is limited as well as the problem that the handle (H) is separated from the plastic bottle (PB). can be fundamentally solved.

On the other hand, it is preferable to apply the same material to the preform (P) and the handle (H), because it is possible to reduce the hassle of having to separate and discharge the handle (H) from the PET bottle (PB) when the contents are exhausted and discarded.

Although the present invention has been described in detail only with respect to the specific embodiments described, it is natural for those skilled in the art that various changes and modifications can be made within the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

100: preform input device 110: first clamp 120: first rotating means
130: first forward and backward movement means 140: second rotation means 200: handle input device
210: second clamp 220: second forward and backward movement means 230: elevating means
300: mold device 310: first body 320: second body
311,321: preform attachment part 312,322: handle mounting part
313,323: clamp insertion groove 300': blowing device 330: stretching rod
400: PET bottle discharging device 410: first clamp 420: third forward and backward movement means
430: third rotation means A: preform supply device B: preform heating device
P: preform P1: opening P2: lid coupling part
H: Handle H1: Ring-shaped rim portion H2: Grip portion
H3: Step PB: PET bottle CV: Transfer conveyor
Ht: heater

Claims (5)

A preform supply step of supplying a preform equipped with a lid coupling portion to the preform heating device via the preform supply device;
a preform heating step of receiving the preform from the preform supply device and heating the remaining portion except for the lid coupling part of the preform through the preform heating device;
a preform input step of injecting the preform discharged from the preform heating device into an open mold device via the preform input device so that the lid coupling part protrudes from the upper part of the mold device;
In the state in which the mold device is opened, the handle composed of the ring-shaped rim part and the grip part is moved to the lower part of the preform through the handle inserting device, and then moved upward to insert the handle to insert the handle into the preform so that the ring-shaped rim part surrounds the preform. step;
a molding preparation step of fixing the preform and the handle by closing the mold device in a state in which the handle is coupled to the preform so that the ring-shaped rim part surrounds the preform;
In a state in which the preform and the handle are fixed through the mold device, the preform input device and the handle input device are moved to their original positions, and the blowing device is detachably coupled to the preform protruding from the upper part of the mold device and then stretched with high-pressure air A molding step of manufacturing a plastic bottle so that the preform and the handle are integrally formed by stretching the preform through the rod;
A plastic bottle discharging step of opening the mold device while holding the lid coupling part of the plastic bottle protruding to the upper part of the mold device via the bottle discharging device and then withdrawing the plastic bottle with a handle from the mold device; characterized in that it comprises a A method for manufacturing a PET bottle with a handle.
a mold device for holding the shape of the preform that is opened and closed by a power source and blown; a preform input device for putting the heated preform into the mold device; A blowing device for manufacturing a plastic bottle by stretching the preform through high-pressure air and a stretching rod; In the PET bottle manufacturing device equipped with a PET bottle discharging device for withdrawing the manufactured PET bottle from the mold device,
The mold device is divided into a first body, a second body and a lower body, so that the first body and the second body are hinged to be able to open and close via an axis, and the inner upper end of the preform injected through the preform input device when closed A preform fitting part that wraps and fixes a part is integrally formed, and on the surface where the first body and the second body face each other, it is removably inserted into the handle composed of the ring-shaped rim part and the grip part that are put in at the time of closing to fix the grip part of the handle. The handle mounting portion is integrally formed, and the second clamp insertion/removal groove opened to the outside with the handle mounting portion interposed therebetween is integrally formed;
A second clamp capable of gripping the gripping portion of the handle, a second forward and backward movement means for moving forward and backward so that the second clamp can be inserted and detached from the mold device, and a lift for moving the second forward and backward movement means up and down means to move the handle composed of the ring-shaped rim and the gripping part so that the ring-shaped rim is placed on the lower part of the preform inserted into the mold device, and to move the handle upward so that the ring-shaped rim of the handle wraps around the perimeter of the preform. A plastic bottle manufacturing apparatus with a handle, characterized in that when the mold device is closed, a handle inserting device that separates from the mold device through the second clamp insertion and removal groove is further reinforced.
3. The method of claim 2,
The preform input device,
a first clamp capable of gripping the heated preform;
a first rotating means for rotating the first clamp about a horizontal axis (X);
a first forward and backward movement means for moving the first rotation means forward and backward;
A PET bottle manufacturing apparatus with a handle, characterized in that it comprises a second rotation means for rotating the first forward and backward movement means about the vertical axis (Y) to move in the lateral direction.
3. The method of claim 2,
The PET bottle discharging device,
a third clamp capable of holding the plastic bottle;
a third forward and backward movement means for moving the third clamp forward and backward;
A PET bottle manufacturing apparatus with a handle, characterized in that it comprises a third rotation means for rotating the third forward and backward movement means about the vertical axis (Y) to move in the lateral direction. delete

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