KR100674221B1 - Cooling rotary equipment for preform of PET-bottle - Google Patents

Abstract

The present invention relates to a rotary apparatus for preform cooling, which constitutes an apparatus for crystallizing the neck of a PET bottle, comprising: a rotating drum (210) rotatably installed on a crystallization apparatus supporter; An input / output gear 220 provided in the rotating drum 210; Chain gear 230 provided in the rotating drum 210; A cooling mechanism 240 having a moving block 241 installed on the rotating drum 210 so as to reciprocate in the vertical direction, and a cooling chuck 242 fixed to the moving block 241 and fitted to the neck of the preform; It is fixed to the crystallization apparatus support, and has a structure having a first cam 250 for reciprocating the moving block 241 of the cooling mechanism 240 in the vertical direction; The rotating drum 210 is provided with a preform separation catching jaw 210a, and when the cooling chuck 242 rises, the preform engaged with the cooling chuck 242 is caught by the preform separating catching jaw 210a and separated, thus preform cooling. The structure of the rotary device for the use is greatly simplified.

Description

Rotary device for preform cooling {Cooling rotary equipment for preform of PET-bottle}

1 is a plan view showing a crystallization apparatus having a rotary apparatus for preform cooling according to the prior art;

2 is a cross-sectional view of a rotary apparatus for preform cooling according to the prior art,

3 is a view showing a cam movement path of the rotary apparatus for preform cooling according to the prior art,

Figure 4 is a cross-sectional view of the rotary rotary device for preform constituting the crystallization device according to the present invention,

5 is a view showing a cam movement path of the preform cooling rotary device constituting the crystallization device according to the present invention,

Figure 6 is a plan view showing a crystallization device having a rotary device for preform cooling according to the present invention.

-Explanation of terms for the main parts of the accompanying drawings-

10; First power transmission mechanism, 11; Rotation axis,

12; Input gear, 13; Output gear,

100; Drive, 110; Output gear,

200,200 '; Rotary device for preform cooling,

210; Rotating drum, 210a; Preform separation jaw,

220; Input and output gears, 230; Chain Gear,

240; Cooling mechanism, 241; Moving Block,

242; Cooling chuck, 250; First Cam,

251; Upper cam, 252; Bottom Cam,

290; Shock absorber 300; Preform feeder,

310; Holder transport chain, 330; holder,

400; Preform feeder, 500; Preform discharger,

600; Heater, 700; Auxiliary rotary device,

800; Tension control device,

A; First cam movement path of the rotary device for preform cooling according to the prior art,

B; Second cam movement path of the rotary device for preform cooling according to the prior art,

C; Third cam movement path of the rotary device for preform cooling according to the prior art,

D; First cam movement path of the rotary device for preform cooling according to the present invention,

P; Preform, R1; Heating Room,

R2; Cooling room.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary apparatus for preform cooling, which constitutes a device for crystallizing the neck of a PET bottle, and to a rotary apparatus for preform cooling for cooling the neck of a preform heated at high temperature.

As is well known, PET bottles are made of polyethylene as a raw material, and their demand is gradually increasing due to the advantages of being lightweight, unbreakable, and easy to mold.

The PET bottle has a different material or heat treatment state depending on the type of contents. In the case of PET bottles that keep the contents of the low temperature state intact, such as bottled water, there is no need to crystallize the neck part, so a separate heat treatment is not necessary. PET bottles that are sterilized and stored must be heat-treated and crystallized to prevent neck damage.

A brief description of the manufacturing process of a PET bottle with crystallized neck is as follows.

First, the raw material (compound form) stored in the raw material reservoir is transferred to a dryer to remove moisture contained in the raw material, and then transferred to an injection molding machine, which is injection molded into a preform that is an intermediate for the manufacture of PET bottles. The gate portion (lower protrusion portion of the preform) is cut to an appropriate length by a cutter.

Thereafter, the preform is heat treated by a crystallization apparatus to crystallize the neck of the preform.

After the neck portion has been crystallized, it is finally molded into a PET bottle by a blow molding machine, and then loaded onto the pallet through a palletizer through product defect inspection.

1 to 10 illustrate a conventional crystallization apparatus, which will be described below with reference to the conventional crystallization apparatus.

Conventional crystallization apparatus, as shown in Figure 1, the driving device 100; A rotary apparatus 200 for preform cooling, which is engaged by the driving apparatus 100 and rotates to cool the neck portion of the preform heated by the heating apparatus 600; A preform conveying apparatus 300 engaged with the rotary apparatus 200 for preform cooling to circulate and convey the preform in the process progress direction; A preform supply device 400 interlocked with the rotary device 200 for preform cooling to supply a preform from the outside to the preform feeder 300; A preform discharge device 500 interlocked with the preform cooling rotary device 200 to discharge the preform cooled by the preform cooling rotary device 200 to the outside; The neck portion of the preform is disposed between the preform supply device 400 and the preform cooling rotary device 200 and is transferred from the preform supply device 400 to the preform cooling rotary device 200 by the preform feeder 300. It consists of a heating device 600 for heating.

The drive device 100 is a known drive motor is applied.

The preform rotary device 200 is as shown in Figure 2 or 3, the rotating drum 210 is rotatably installed on the crystallization apparatus supporter; An input / output gear 220 provided in the rotating drum 210; Chain gear 230 provided in the rotating drum 210; A cooling mechanism 240 having a moving block 241 installed on the rotating drum 210 so as to reciprocate in the vertical direction, and a cooling chuck 242 fixed to the moving block 241 and fitted to the neck of the preform; A first cam 250 fixed to the crystallization apparatus supporter to reciprocate the moving block 241 of the cooling mechanism 240 in the vertical direction; A preform separation mechanism 260 installed on the rotating drum 210 so as to be reciprocated in a vertical direction and detaching the preform engaged with the cooling mechanism 240 from the cooling mechanism 240; It is fixed to the crystallizer support, and forms a structure having a second cam 270 for reciprocating the preform separation mechanism 260 in the vertical direction. Here, reference numeral 10 in FIG. 2 denotes a first power transmission mechanism for transmitting power from the drive device 100 to the rotary device 200 for preform cooling, and is rotatably installed on the crystallization device support. Input gear 12 that is fixed to the rotary shaft 11, the rotary shaft 11 and engaged with the output gear 110 of the drive device 100, the input and output gear of the rotary device 200 for the preform cooling fixed to the rotary shaft 11 Applied to (220) consisting of an output gear (13) engaging. In addition, reference numerals 20 and 30 in FIG. 3 denote a second power transmission mechanism and a third power used to transfer power from the rotary device 200 for preform cooling to the preform discharge device 500. As the transmission mechanism, the second power transmission mechanism 20 is fixed to the rotating shaft 21 and the rotating shaft 21 rotatably installed on the crystallization apparatus supporter to the input and output gear 220 of the rotary device 200 for preform cooling. Composed of an input gear 22, an output gear 23 fixed to the rotating shaft 21, the third power transmission mechanism 30 is a fixed shaft 31, a fixed shaft 31 fixed to the crystallization device support It was installed rotatably at the gear consisting of the input and output gear 32 to be engaged with the output gear 23 of the second power transmission mechanism (20). On the other hand, reference numeral "280" in Figures 2 and 3 is a shock absorbing mechanism for absorbing the shock applied to the preform separation mechanism 260, the movement is installed in the rotary drum 210 so as to reciprocate in the vertical direction Block 281, a third cam 282 fixed to the crystallization apparatus supporter for reciprocating the moving block 281 in the vertical direction, and a spring 283 disposed between the moving block 281 and the preform separation mechanism 260. Applied consisting of.

The preform conveying apparatus 300 is interlocked with the chain gear 230 of the preform cooling rotary device 200, the holder conveying chain 310 circulated in the process progress direction (310; see FIG. 2); A chain guide (not shown) fixed to the crystallization apparatus supporter to prevent the path deviation in the horizontal direction and the path deviation in the vertical direction of the holder transport chain 310; A holder 330 rotatably installed in the holder transport chain 310; It forms a structure having a holder rotating mechanism (not shown) for rotating the holder 330 is transferred in the process progress direction.

As shown in FIG. 1, the preform supply device 400 includes three preform supply rotary devices 410, 420, 430, and the three preform supply rotary devices 410, 420, 430 are provided from the preform discharge device 500. Interlocked with power.

As shown in FIG. 1, the preform discharge device 500 includes three preform discharge rotary devices 510, 520 and 530, and the three preform supply rotary devices 510, 520 and 530 are preform cooling rotary devices 200. Are interlocked with power from

The heating device 600 is a heating device that can heat the neck of the preform rotated while moving along the process progress direction by the preform conveying device 300, a known electric heater is applied. Since the heating device 600 has already been widely applied in the art and is being performed, a detailed description thereof will be omitted.

Meanwhile, as shown in FIG. 1, the heating device 600 is disposed in the heating chamber R1, and the rotary device 200 for preform cooling, the preform supply device 400, and the preform discharge device 500 are separated from each other. It is preferable to arrange | position to cooling chamber R2 of this, and to reduce heat loss.

Referring to the operation state of the conventional crystallization device is as follows.

When the driving device 100 is operated, as shown in FIGS. 1 and 2, the power of the driving device 100 is output gear 110 → the input gear 12 of the first power transmission mechanism 10 →. The output gear 13 of the first power transmission mechanism 10 is transmitted to the input / output gear 220 of the rotary device 200 for preform cooling, and the rotary drum 210 of the rotary device 200 for preform cooling is clockwise. Is rotated.

When the rotating drum 210 is rotated in the clockwise direction, as shown in FIGS. 1 and 2, holder transfer of the preform feeder 300 engaged with the chain gear 230 of the preform cooling rotary device 200 is performed. The chain 310 is forcedly circulated along the process progress direction.

In addition, when the rotating drum 210 is rotated in a clockwise direction, as shown in FIG. 1, the preform discharge device in which the power of the driving device 100 is engaged with the input / output gear 220 of the rotary device 200 for preform cooling. 500 and the preform supply device 400 meshed with the preform discharge device 500 are interlocked with the rotary device 200 for preform cooling.

When the preform is supplied from the outside to the third rotary device 430 for preform supply of the preform supply device 400 while the crystallization device is operating as described above, the preform is supplied to the third rotary device 430 for preform supply and the preform supply. After being transferred to the first rotary device 410 for supplying the preform by the second rotary device 420 for use, it is seated on the holder 330 of the preform feeder 300 by the first rotary device 410 for supplying the preform. do.

The preform seated on the holder 330 of the preform feeder 300 is then rotated while moving along the process progress direction, the heating device 600 is to heat the neck of the preform.

The preform whose neck is heated by the heating device 600 is then moved to the rotary device 200 for preform cooling.

When the preform is transferred to the rotary apparatus 200 for preform cooling, the cooling chuck 242 of the cooling mechanism 240 is lowered and inserted into the neck of the preform, and the neck of the preform heated at high temperature is the cooling chuck 242. It is cooled quickly by

Subsequently, when the cooling chuck 242 is raised, the preform is engaged with the cooling chuck 242 and lifted upward. In this state, the preform separation mechanism 260 is lowered so that the preform is pushed by the preform separation mechanism 260. It is pressed by 260a and comes out of the cooling chuck 242.

The preform separated from the cooling chuck 242 is supplied to the inlet opening 60a of the preform guide plate 60, and the preform supplied to the inlet opening 60a of the preform guide plate 60 is a first rotary device for preform discharge. Preform conveying plate 514 of 510, preform conveying plate 523 of second rotary device 520 for preform ejection, and preform conveying plate 533 of third rotary device 530 for preform ejection. Thus, it is discharged to the outside through the discharge port (60b) of the preform guide plate 60.

3 is a view showing a cam movement path of the rotary apparatus for preform cooling according to the prior art, the operation state of the rotary apparatus for preform cooling 200 will be described in more detail with reference to the following.

First, when the preform is supplied to the holder 330 of the preform feeder 300 at the point of time “P1”, the cooling chuck 242 located above the holder 330 is the same as the holder 330. As it moves, it descends gradually and fits into the neck of the preform.

Thereafter, the cooling chuck 242 is moved in the same manner as the holder 330 until the time point "P2", and is maintained in the state of being fitted to the neck of the preform, so that the neck of the preform is rapidly cooled by the cooling chuck 242. As such, when the neck of the preform is cooled, the diameter of the neck is reduced so that the inner surface of the neck and the outer surface of the cooling chuck 242 are engaged.

Then, when the "P2" time point is reached, the cooling chuck 242 is gradually raised, wherein the preform is engaged with the cooling chuck 242 to rise with the cooling chuck 242.

Thereafter, the preform separation mechanism 260 is gradually lowered at the point “P4” so that the pushing portion 260a of the preform separation mechanism 260 pushes down the preform engaged with the cooling chuck 242 in the downward direction, and the preform separation. The preform forcedly separated by the mechanism 260 is supplied to the inlet opening 60a of the preform guide plate 60 with the neck portion placed on the preform guide plate 60.

Thereafter, the process is repeated.

On the other hand, the moving block 281 of the shock absorbing mechanism 280 is guided by engaging the third cam 282 at a time point adjacent to "P2", and the moving block 281 is lowered at the time point "P3" to preform separation mechanism 260. ) Is elastically supported downward by the spring 283. As such, when the preform separation mechanism 260 is shot and supported by the spring 283, the shock generated by the preform separation mechanism 260 is buffered.

However, in the rotary apparatus 200 for preform cooling according to the related art, the preform discharge device 500 receives the preform separated from the cooling chuck 242 of the preform cooling rotary device 200 and discharges it to the outside. Taking the structure, the structure is quite complicated.

In addition, since the rotary device 200 for preform cooling according to the prior art is a method in which the cooling chuck 242 is also used as a preform conveying means to the preform discharge device 500, the preform conveying to the preform discharge device 500 is safe. Failure to do so frequently resulted in malfunctions.

The present invention has been invented to solve the above problems, and an object of the present invention is to provide a rotary apparatus for preform cooling having a simple structure capable of safely separating the preform from the cooling chuck.

The present invention for achieving the above object is a rotating drum rotatably installed on the crystallization apparatus supporter; Input and output gears provided in the rotating drum; Chain gear provided in the rotating drum; A cooling mechanism having a moving block installed on the rotating drum to be reciprocated in the vertical direction and having a cooling chuck fixed to the moving block and fitted to the neck of the preform; A preform cooling rotary device having a first cam fixed to a crystallization device support body and reciprocating a moving block of a cooling mechanism in a vertical direction, wherein the rotating drum is provided with a locking jaw for preform separation, and cooled when the cooling chuck rises. The preform meshed with the chuck is caught by a catching jaw for separating the preform.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

4 to 6 are views showing the present invention, the same reference numerals are attached to the same parts as those of FIGS. 1 to 3 showing the prior art, and description thereof will be omitted.

According to FIG. 4, the rotary apparatus 200 for preform cooling according to the present invention includes a rotating drum 210 rotatably installed on the crystal cosmetic support; An input / output gear 220 provided in the rotating drum 210; Chain gear 230 provided in the rotating drum 210; A cooling mechanism 240 having a moving block 241 installed on the rotating drum 210 so as to reciprocate in the vertical direction, and a cooling chuck 242 fixed to the moving block 241 and fitted to the neck of the preform; It is fixed to the crystallization apparatus support, and consists of a first cam 250 for reciprocating the moving block 241 of the cooling mechanism 240 in the vertical direction, the stopping jaw 210a for preform separation on the rotating drum 210 Is provided, the preform engaged with the cooling chuck 242 at the time of the rise of the cooling chuck 242 forms a structure that is caught by the catching jaw 210a for separating the preform.

Referring to Figure 4 when described in detail the operating state of the rotary device for preform cooling 200 according to the present invention.

First, when the preform is supplied to the holder 330 of the preform conveying apparatus 300 at the point of time “P7”, the cooling chuck 242 located above the holder 330 is the same as the holder 330. As it moves, it descends gradually and fits into the neck of the preform.

Thereafter, the cooling chuck 242 is moved in the same manner as the holder 330 to the point of time "P8" while maintaining the fitted state on the neck of the preform, and the neck of the preform is rapidly cooled by the cooling chuck 242.

Thereafter, when the "P8" time point is reached, the cooling chuck 242 gradually rises, and the preform engaged with the cooling chuck 242 also rises together with the cooling chuck 242, thus engaging the cooling chuck 242. Since the rising preform is caught by the catching jaw 210a for separating the preform, the rising is restrained naturally from the cooling chuck 242 and is seated on the holder 330 again.

According to the present invention, unlike the rotary apparatus 200 for preform cooling according to the prior art, it is installed to the reciprocating movement in the vertical direction on the rotating drum 210, the cooling mechanism 240 to the preform meshed with the cooling mechanism 240 A preform separation mechanism 260 detached from the base; The second cam 270 fixed to the crystallizer support body, which reciprocates the preform separation mechanism 260 in the vertical direction, becomes unnecessary, and also reduces the shock generated during the preform separation by the preform separation mechanism 260. Since the shock absorbing mechanism 280 is also unnecessary, the structure of the preform cooling rotary device 200 is greatly simplified, and the operation is also simplified, so that maintenance and maintenance are advantageous.

On the other hand, Figure 6 shows an example in which the rotary device for preform cooling 200 according to the present invention is applied to the neck crystallization apparatus of the PET bottle, as shown in this, interlocked with the preform transfer device 300, It transfers the preform supplied from the preform supply device 400 to the preform conveying device 300, reinforces the auxiliary rotary device 700 for delivering the preform mounted on the preform conveying device 300 to the preform discharge device 500 ; When the preform supply device 400 and the preform discharge device 500 are interlocked with the auxiliary rotary device 700, the preform cooling device 200 does not need to be involved in preform supply or discharge at all. When separating from the cooling chuck 242 of the cooling rotary device 200, the preform does not need to be lifted high so as to completely separate from the holder 330, and the preform is removed when the preform is removed from the cooling chuck 242. This path deviation problem does not occur at all.

On the other hand, reference numeral "800" is a tension control device for adjusting the tension of the preform conveying apparatus 300, in the present embodiment is installed in the cylinder mechanism to support the ball in one direction, the piston rod of the cylinder mechanism preform conveying device The chain gear rotated in engagement with the holder transport chain 310 of 300 was applied.

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.

For example, since the rotary device for preform cooling according to the present invention has a simple structure and can be manufactured in a small size, as shown in FIG. 6, two or more preform cooling rotary devices 200 and 200 ′ may be applied as needed. Of course you can. In this case, it is preferable to engage one preform cooling rotary device 200 with the driving device 100 and the other preform cooling rotary device 200 'to be engaged with the preform feeder 300 to be rotated.

4 and 5, the first cam 250 is divided into an upper cam 251 and a lower cam 252, and is fixed to a crystallization device support to move the upper cam 251 downward. Reinforcing the shock absorbing mechanism 290 to support the impact, the shock generated when the cooling chuck 242 is inserted into the neck of the preform seated on the holder 330 of the preform conveying device 300 is a shock absorber sphere 290 There is an effect that is reduced by. In this case, a sensor (not shown) may be installed in the shock absorbing mechanism 290 to automatically stop the operation of the crystallization apparatus when excessive pressure is generated in the shock absorbing mechanism 290.

According to the present invention as described above, the rotating drum 210 rotatably installed on the crystallization apparatus supporter; An input / output gear 220 provided in the rotating drum 210; Chain gear 230 provided in the rotating drum 210; A cooling mechanism 240 having a moving block 241 installed on the rotating drum 210 so as to reciprocate in the vertical direction, and a cooling chuck 242 fixed to the moving block 241 and fitted to the neck of the preform; It is fixed to the crystallization apparatus support, and has a structure having a first cam 250 for reciprocating the moving block 241 of the cooling mechanism 240 in the vertical direction; The rotating drum 210 is provided with a preform separation catching jaw 210a, so that the preform meshed with the cooling chuck 242 when the cooling chuck 242 is raised is caught by the preform separation catching jaw 210a. Therefore, the preform is safely separated from the cooling chuck 242, and the structure thereof is greatly simplified.

Claims (2)

A rotating drum 210 rotatably installed on the crystallization apparatus supporter; An input / output gear 220 provided in the rotating drum 210; Chain gear 230 provided in the rotating drum 210; A cooling mechanism 240 having a moving block 241 installed on the rotating drum 210 so as to reciprocate in the vertical direction, and a cooling chuck 242 fixed to the moving block 241 and fitted to the neck of the preform; In the rotary apparatus for preform cooling fixed to the crystallization apparatus support, and having a first cam 250 for reciprocating the moving block 241 of the cooling mechanism 240 in the vertical direction, The rotary drum 210 is provided with a preform separation catching jaw 210a, and the preform engaged with the cooling chuck 242 when the cooling chuck 242 rises is caught by the preform separation catching jaw 210a. Rotary device for preform cooling. The shock absorbing mechanism of claim 1, wherein the first cam 250 is divided into an upper cam 251 and a lower cam 252, and is fixed to a crystallization apparatus supporter to support the upper cam 251 in a downward direction. 290) a rotary device for preform cooling, characterized in that the reinforcement.

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