KR101040560B1 - Freeform automated injection molding systems - Google Patents

Abstract

The present invention relates to a preform automatic injection molding system for injection molding a preform. More specifically, the first movable mold and the second movable mold are continuously moved to a stationary mold to inject the preform, and the amount of the first movable mold is increased. Preform injected to the side is taken over at the same time and transferred to the cooling device, delayed transfer until the preform is cooled to a predetermined temperature, and preform automatic injection molding to transfer the cooled preform to the loading box through the transfer belt As for the system,

An injection apparatus configured to form a preform on both sides of the first movable mold by forming a fixed mold for forming a preform and a first and second movable mold;

A taking-out apparatus which takes out the injected preform to the take-out plate to move forward and backward and transfers it to the next step;

A cooling device which inserts the extracted preform into the cooling pipe and cools and transfers the cooling water by the cooling water and the compressed air while sequentially delaying the movement;

A transporting device for transporting and discharging the cooled preform to the loading box;

It is to provide a preform automatic injection molding system consisting of a compressor and a coolant supply for supplying the coolant and compressed air to the blowout device and the cooler.

Preform, Cooling Device, Conveyer, Blowing Out Device

Description

Freeform automated injection molding systems

The present invention relates to a preform automatic injection molding system for injection molding a preform. More specifically, the first movable mold and the second movable mold are continuously moved to a stationary mold to inject the preform, and the amount of the first movable mold is increased. Preform injected to the side is taken over at the same time and transferred to the cooling device, delayed transfer until the preform is cooled to a predetermined temperature, and preform automatic injection molding to transfer the cooled preform to the loading box through the transfer belt It's about the system.

Preform refers to an article molded into a small "U" shaped tubular body produced in a preliminary step for blow molding a PET bottle made of synthetic resin.

The preform injection-molded in the injection molding machine is manufactured by using polyethylene terephthalate (PET) as a main raw material, and supplied to the blow molding machine to form a PET bottle having a predetermined size to produce a PET bottle. You will get

An injection apparatus for injection molding such a preform includes an injection apparatus equipped with an injection mold, which is distinguished by a male and female to inject the raw material of the preform, and a conveying apparatus for transferring the preform molded by the injection apparatus, It is composed of a cooling storage device for cooling while mounting the preform until a certain quantity is satisfied, and a conveying conveyor for receiving a predetermined quantity and transferring it to a predetermined position, and the compressor for generating cooling water and vacuum in the cooling apparatus. And cooling water supply.

The conventional preform injection device is to injection molding up to 32 to 96 preforms in one mold, and withdraws them, mounts them in a cooling storage device to which cooling water is supplied, and then cools them by leaving them for a predetermined time. After precooling is completed, the preform is dropped onto the transfer conveyor, and then transferred to the loading box.

The present invention is to solve the problems of the conventional preform injection device described above, by using a single injection device to enable injection molding of a greater amount of preform, and automatically cool the injection molded preform, It is to provide a preform injection molding apparatus by maximizing the use efficiency by automatically loading the preform in a loading box.

An injection apparatus configured to form a preform on both sides of the first movable mold by forming a fixed mold for forming a preform and a first and second movable mold;

A taking-out apparatus which takes out the injected preform to the take-out plate to move forward and backward and transfers it to the next step;

A cooling device which inserts the extracted preform into the cooling pipe and cools and transfers the cooling water by the cooling water and the compressed air while sequentially delaying the movement;

A transporting device for transporting and discharging the cooled preform to the loading box;

An object of the present invention is to provide a preform automatic injection molding system including a compressor and a coolant supply for supplying coolant and compressed air to the blower and the cooler.

The preform automatic injection molding system of the present invention having the above-described configuration is provided with a feature capable of injection molding a larger amount of preforms at a time, cooling the transferred preforms, and cooling the preforms automatically discharged and loaded. It is loaded in the box, and the sound of the alarm to replace the stacked loading box provides the effect of maximizing management efficiency.

The present invention which exhibits such an effect is described in more detail below.

An injection apparatus configured to form a preform on both sides of the first movable mold by forming a fixed mold for forming a preform and a first and second movable mold;

A taking-out apparatus which takes out the injected preform to the take-out plate to move forward and backward and transfers it to the next step;

A cooling device which inserts the extracted preform into the cooling pipe and cools and transfers the cooling water by the cooling water and the compressed air while sequentially delaying the movement;

A transporting device for transporting and discharging the cooled preform to the loading box;

It is composed of a compressor and a coolant supply for supplying the coolant and the compressed air to the take-out device and the cooler.

After the fixed mold and the second movable mold are in close contact with both sides of the first movable mold, the first preform and the second preform are simultaneously formed by supplying a raw material for forming the reformate.

Take out the molded first preform and the second preform at the same time and feed them into the cooling tube, and transfer the first preform and the second preform into the cooling tube sequentially, and supply cooling water to the cooling tube to perform the cooling operation, It supplies compressed air to discharge heat generated during cooling to the outside,

The first preform and the second preform that have been cooled and discharged are transferred to a conveying conveyor, and are configured to be transported and put into a loading box.

The structure of this invention comprised in this way is demonstrated in detail as an Example referring an accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan schematic view showing the constitution of the present invention, and Fig. 2 is a front schematic view of the present invention.

An injection device 1 equipped with a mold for molding a preform, a takeout device 10 for taking out and transporting the injected preform, a cooling device 20 for cooling while delaying the taken out preform, and a cooled preform In the conventional preform injection molding apparatus composed of a conveying device 30, a compressor 40, and a cooling water supply device 50 for conveying and discharging to the stacking box 60,

The injection device 1 is composed of a fixed mold 2, a first movable mold 3 and a second movable mold 4, and the fixed mold 2 and the first movable mold 3 are in close contact with each other. The first preform (P1) is configured to injection molding, the first movable mold (3) and the second movable mold (4) in close contact to injection molding the second preform (P2), the first movable mold (3), The pair of guides 5 are provided on the side surfaces of the second movable mold 4 so that the second movable mold 4 and the first movable mold 3 are separated from the stationary mold 2.

The take-out device 10 is configured by a take-out plate 12 that is moved forward and backward by the motor 11, and is configured by mounting a pair of take-out plates 12 having the same configuration.

The suction plate 12 is connected to the compressor 40 and a plurality of suction ports 13 are formed to take out the first and second preforms P1 and P2 injection-molded by suction force.

The cooling device 20 is for receiving and cooling the first and second preforms P1 and P2 formed by the injection device 1, and having a number of cooling transfer pipes corresponding to the number of injected preforms. (21), and the cooling air and compressed air flows into the outer periphery of the cooling transfer pipe (21) to form a granular air supply passage (22) and a cooling water circulation passage (23) for cooling operation, and the small conveyance. Conveyor 24 is mounted to be configured to sequentially feed the preform injected.

The cooling transfer pipe 21 has a hollow portion 21a having a diameter in which a preform is inserted in a central portion thereof, and is compressed with a plurality of cooling water circulation paths 23 along the outer circumference of the hollow portion 21a in the longitudinal direction. Compressed air supply passage 22 through which air is introduced, is formed to form a cutout portion 26 in which one side is cut in the longitudinal direction, and configured to open at one side of the hollow portion 21a, the chain belt ( The transfer rod part 28 which is sequentially transferred by the transfer bar 25 fixed to 24 is coupled.

The hollow part 21a is provided with an injection nozzle 27 for injecting compressed air from the compressed air supply hole 22.

The conveying device 30 is rotated in one direction by a conveying belt 31 which is rotated by a drive motor, and second conveying the conveyed preform to a high position under the end of the conveying belt 31. Slope conveyor 32 is installed.

At the bottom of the end of the slope conveyor 32, a forward and reverse rotation conveyor 33 is installed to transfer the preform transferred to the second stacking box 60 again, and a large stacking box 60 at both ends thereof. Are configured to be located respectively.

The forward and reverse rotation conveyor 33 may be configured such that the forward and reverse rotation is switched by the sensor for sensing the weight at the bottom of the loading box 60, or by installing a timer to repeat the forward and reverse rotation operation.

The operation of the present invention configured as described above will be described.

In order to eject the preform, when the second movable mold 4 is pushed toward the stationary mold 2, the second movable mold 4 is brought into close contact with the first movable mold 3, and then the first movable mold 3 is connected to the first movable mold 3. The second movable mold 4 is in close contact with the fixed mold 2.

Both sides of the first movable mold 3 are provided with molds for injecting the preform, and after the first and second preforms P1 and P2 are molded at both sides of the first movable mold 3, The second movable mold 4 first returns to its original position.

When the return of the second movable mold 4 is completed, the first movable mold 3 connected to the second movable mold 4 starts backward and the separation of each mold is completed.

At this time, as the first movable mold 3 and the second movable mold 4 are separated, the molded first and second preforms P1 and P2 remain on both sides of the first movable mold 3. Subsequently, the takeout device 10 is operated to take out the first and second preforms P1 and P2 formed therein.

The take-out apparatus 10 is provided with the same number of suction ports 13 as the number of the first and second preforms P1 and P2 formed in the take-out plate 12 by the operation of the motor 11, respectively. The suction port 13 sucks the first and second preforms P1 and P2 and draws them out, and moves them back to the next cooling device 20 while being moved backward.

The first and second preforms P1 and P2 taken out and transferred to the inlet of the cooling device 20 are first and second preforms P1 and P2 adsorbed to the suction port 13 by the operation of the compressor 40. ) Is pushed into the hollow portion 21a of the cooling pipe body 21 constituting the cooling device 20.

Each of the first and second preforms P1 and P2 entering the hollow portion 21a of each cooling pipe 21 constituting the cooling device 20 is a cooling water circulation path 23 formed at the periphery of the cooling pipe 21. The heat generated by the first and second preforms P1 and P2 cooled by the coolant circulating along the airflow and entering the internal hollow portion 21a of the cooling pipe 21 is compressed by the compressor 40. By supplying the compressed air to the hollow portion 21a through the compressed air supply passage 22 to the injection nozzle 27, forced air is discharged to the outside.

In this way, the first and second preforms P1 and P2 cooled by the internal hollow portion 21a of the cooling pipe 21 are transferred to the cutouts 26 formed in the notch 26 formed on one surface of the cooling pipe 21. By 25 is sequentially transported to the rear, and finally falling to the conveying belt 31 constituting the conveying device (30).

At the distal end of the cooling tube body 21, the curved first and second preforms P1 and P2 are bent downward to prevent the surface from being scratched while falling to the transfer belt 31. It can be configured to fall to the conveyance belt 31 while absorbing the drop impact.

The first and second preforms P1 and P2 separated by the conveying belt 31 are conveyed to a high position through the slope conveyor 32 provided at one side, and the forward and reverse rotation is provided at the lower end of the slope conveyor 32. Falling into the conveyor 33 is put into one of the left and right loading box 60 to be stored.

The loading box 60 is equipped with a sensor for measuring and sensing the weight or a timer for converting forward and reverse rotation by inputting an operation time, and when a sufficient amount of preforms are loaded in any one of the loading boxes 60, The rotational direction of the rotary conveyor 33 is switched to put into another stacking box 60.

In addition, the alarm box is installed in the stacking box 60 so that a predetermined amount of preform is loaded to generate an alarm sound when the input weight or moving time is reached so that an administrator replaces the stacking box 60 in which the stacking of the preform is completed. can do.

As described above, the preform injection molding system of the present invention maximizes productivity by molding a larger amount of preforms in one injection molded body, as well as a series of processes of simultaneously extracting and cooling and transporting and loading the stacked boxes. This is done automatically.

1 is a plan view showing the configuration of the present invention

Figure 2 is a front view showing the front configuration of the present invention

Figure 3 is a side view showing the side configuration of the present invention

Figure 4 is an enlarged cross-sectional view of the cooling pipe applied to the present invention.

[Description of Drawings]

1: Injection device 2: Fixed mold

3: first movable mold 4: second movable mold

5: guide

10: ejection device 11: compression cylinder

12: extraction board 13: adsorption port

20: cooling device 21: cooling pipe

22: compressed air supply passage 23: cooling water circulation passage

24: chain belt 25: transfer bar

30: transfer device 31: transfer belt

32: Slope Conveyor 33: Forward Reverse Conveyor

40: compressor 50: cooling water supply

60: stacking box

Claims (5)

An injection device 1 equipped with a mold for molding a preform, a takeout device 10 for taking out and transporting the injected preform, a cooling device 20 for cooling while delaying the taken out preform, and a cooled preform In the conventional preform injection molding device composed of a conveying device 30, a compressor 40, and a cooling water supply device 50 for conveying and discharging to a stacking box (B), The injection device 1 is composed of a fixed mold 2, a first movable mold 3 and a second movable mold 4, and the fixed mold 2 and the first movable mold 3 are in close contact with each other. The first preform (P1) is configured to injection molding, the first movable mold (3) and the second movable mold (4) in close contact with the injection molding the second preform (P2), the first movable mold (3), A pair of guides 5 are installed at the side surfaces of the second movable mold 4 so as to be moved forward and backward by the motor 11, and the second movable mold 4 and the first movable mold 3 are fixed molds ( Preform automatic injection molding system, characterized in that configured to be separated from 2). The method of claim 1, The take-out device 10 comprises a take-out plate 12 that is moved forward and backward by the motor 11, and is configured by mounting a pair of take-out plates 12 having the same configuration to both sides, The outlet plate 12 is formed by forming a plurality of suction ports 13 to be connected to the compressor 40 to take out the first and second preforms P1 and P2 injection-molded by the suction force. Preform automatic injection molding system. The method of claim 1, The cooling device 20 is for receiving and cooling the first and second preforms P1 and P2 formed by the injection device 1, and having a number of cooling transfer pipes corresponding to the number of injected preforms. (21), and the cooling air and compressed air flows into the outer periphery of the cooling transfer pipe (21) to form a granular air supply passage (22) and a cooling water circulation passage (23) for cooling operation, and the chain belt ( The transfer bar 25 is mounted on the 24, and the input preforms are sequentially transferred. The cooling transfer pipe 21 has a hollow portion 21a having a diameter in which a preform is inserted in a central portion thereof, and is compressed with a plurality of cooling water circulation paths 23 along the outer circumference of the hollow portion 21a in the longitudinal direction. Compressed air supply passage 22 through which air is introduced, is formed to form a cutout portion 26 in which one side is cut in the longitudinal direction, and configured to open at one side of the hollow portion 21a, the chain belt ( The transfer rod portion 28 which is sequentially transferred by the transfer bar 25 fixed to the 24 is coupled, The hollow part (21a) is a preform automatic injection molding system, characterized in that the injection nozzle 27 for injecting compressed air from the compressed air supply hole (22). The method of claim 1, The conveying device 30 is rotated in one direction by a conveying belt 31 which is rotated by a drive motor, and the first and second preforms P1, which are conveyed to the lower end of the conveying belt 31. Install the slope conveyor 32 for the secondary transfer of P2) to a high position, At the lower end of the slope conveyor 32, a forward and reverse rotation conveyor 33 is installed to transfer the preforms P1 and P2, which are secondarily transported, to the two stacking boxes 60. Preform automatic injection molding system, characterized in that the stacking box 60 is configured to be located respectively. The method of claim 4, wherein The reverse rotation conveyor 33 is a means for switching the forward and reverse rotation by a sensor for sensing the weight in the lower portion of the loading box 60; and by installing a timer, the forward and reverse rotation operation repeatedly for a predetermined time Means for proceeding; Preform automatic injection molding system comprising any one of the means.

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