KR100357814B1 - Preform neck crystallization machine - Google Patents

Abstract

The present invention relates to a neck crystallization apparatus for a preform, wherein the neck crystallization apparatus includes a conveying path for carrying two rows of preforms in parallel, and in the middle of the conveying path, first and second heating for heating the necks of the two rows of preforms to a crystallization temperature. And a cooling section for cooling the heated neck of the two rows of preforms and a takeout section for taking out the two rows of preforms after cooling, and the two rows of preforms are stored in the conveying path by storing the two sections of the body of the preforms. A conveying member for conveying is provided, and the cooling section is inserted into the neck portion of the heated preform 10 and inserted into the neck portion of the neck portion when the cooling core 96 is removed from the neck portion. It is characterized in that the two-row mold release tube member is installed to contact and release the neck inner surface and the cooling core.

Description

Neck crystallization device of preform {PREFORM NECK CRYSTALLIZATION MACHINE}

The present invention relates to a neck crystallization apparatus of a preform, and more particularly, to a neck crystallization apparatus of a preform for improving heat resistance and mechanical properties of the neck portion of a heat resistant container.

As a method of whitening and crystallizing the neck part of the preform in shaping | molding a heat resistant resin container, what is shown by Unexamined-Japanese-Patent No. 61-1288 and Unexamined-Japanese-Patent No. 61-24170 is known.

The method of crystallizing the neck portion of the preform shown in this publication is to insert a core into the neck portion of the preform. In the state where the inner circumferential surface of the neck portion and the outer circumferential surface of the core are in contact with each other, the neck portion is crystallized and the shape of the neck portion is regulated.

In addition, during crystallization, the neck part and the other part of the preform are thermally blocked by a heat insulating material, and the neck part is exposed to a hot air atmosphere to perform heat treatment. In this case, the lower surface of the flange part formed below the neck part of the preform and the heat insulating material The heat treatment is performed at intervals between the upper surfaces.

In this way, the gap between the lower surface of the flange portion and the upper surface of the heat insulator prevents the heat of the flange portion from escaping from the heat insulator and prevents the temperature decrease of the flange portion, thereby eliminating the heat treatment shortage.

However, in such a crystallization method, the core inserted into the neck portion of the preform only regulates the shape of the neck portion. For this reason, after heating the neck part of a preform, the neck part cannot be actively cooled and it takes out from crystallization, and there exists a possibility that a shaping | molding cycle may become long.

In addition, although the neck portion is crystallized while the inner circumferential surface of the neck portion and the outer circumferential surface of the core are in contact with each other, there is no disclosure of a device for releasing the core and the neck portion after the heat treatment is completed and it is difficult to automate.

In addition, heat treatment is performed at intervals between the lower surface of the flange portion and the upper surface of the heat insulator. In the case where the flange portion is deformed by the heat treatment, there is no means for shaping, and thus it is in a state where it cannot be shaped.

Therefore, the applicant of the present application proposed the neck part crystallization apparatus of the preform suitable for the automation which can reliably shape the shape of the neck part of a preform using a core, and can pull out a core from a neck part reliably (Japanese Patent Application Laid-Open No. 10-96613). number).

However, since the heating takes time to crystallize the neck portion, there is room for improvement in terms of productivity improvement.

Further, room for improvement such as simplification of assembly of the member for conveying the preform, further simplification of the structure, improvement of stability, and the like is left.

An object of the present invention is to provide a neck crystallization apparatus of a preform that can achieve neck crystallization of a larger amount of preform and improve productivity.

Another object of the present invention is to provide a neck crystallization apparatus of a preform that enables the simplification of assembly of the member carrying the preform, further the simplification of the structure, and the improvement of the stability.

1 is a schematic plan view showing a neck crystallization apparatus of a preform according to one embodiment of the present invention;

FIG. 2 is an enlarged cross-sectional view along the II-II line of FIG. 1;

3 is an enlarged cross-sectional view of the conveying member;

4 is an enlarged cross-sectional view along the line IV-IV of FIG. 1;

5 is an enlarged cross-sectional view along the line VV of FIG. 1;

6 is a side view seen from the arrow VI direction of FIG. 1, and

7 is a cross-sectional view showing another example of a mold release member different from FIG. 4.

* Explanation of symbols for the main parts of the drawings

10: preform 12: neck

14: body portion 16: flange portion

18: crystallization apparatus 20: conveying path

32: carrier chain 34a, 34b: sprocket

64: cooling unit 88: gear

178: slide shaft 182: block for falling comers

According to one aspect of the present invention, there is provided an apparatus for crystallizing the neck portion of a preform having a neck portion and a bottomed cylindrical body portion that is continued to the neck portion.

A plurality of conveying members each holding a plurality of preforms,

The plurality of conveying members are fixed at predetermined intervals and are conveying bodies for conveying the plurality of preforms in parallel;

A supply unit for supplying the plurality of preforms to each of the plurality of conveying members;

A heating unit for heating the neck portion of the supplied plurality of preforms to a crystallization temperature,

Cooling unit for cooling the heated neck portion and

It is a neck part crystallization apparatus of the preform provided with the extraction part which takes out the said some preform which has the said cooled neck part.

According to one aspect of the present invention, the neck portions of the plurality of preforms are heated and cooled after being conveyed in parallel with the plurality of preforms. Therefore, crystallization of many neck parts can be performed at a time, and productivity can be improved remarkably.

Thus, each of the plurality of conveying members may have a conveying block fixed to the conveying chain. It is preferable that this conveying block has two cylinder members holding two preforms, and conveys these two preforms along a parallel conveyance path. In addition, it is preferable that each of the two cylinder members accommodates the body portion of the preform to expose and maintain the neck portion. With this configuration, two preforms can be held for each transport block, thereby doubling the productivity.

In addition, the heating unit is disposed on both sides of the parallel conveying path and two heaters for heating the two neck portions exposed by the two cylinder members, and arranged in the center of the parallel conveying path and heat from the two heaters It is preferable to provide a heat insulating member for blocking.

When overheating the neck portion on one of the two heaters, the neck portion can be heated at a stable temperature by blocking the influence of heat from the other side of the two heaters with the heat insulating member.

The preform may have a flange portion formed between the neck portion and the body portion.

In this case, the conveying member may be configured by installing a bottom member receiving the bottom of the preform inserted into the barrel member, a holder installed at the lower end of the barrel member, and a magnetic rod inserted into the barrel member through the holder. have.

In this case, an upper surface of the cylinder member is provided with a shaping surface for shaping the lower surface of the flange portion, and the holder is integrally rotatable and ascendably engaged with the magnetic rod.

Moreover, when a preform is conveyed at least to a heating part, it is preferable that a space | interval is provided between the upper surface of a cylinder member and the lower surface of the flange part of a preform like a conventional thing. At this time, it is preferable that the holder is pressed upward by the pressing means so that the lower surface of the flange portion and the shaping surface of the cylindrical member are pressed to form the lower surface of the flange portion.

In this way, the conveying member of the preform is formed of a tubular member, a bottom member, a holder, and a rod for magnetic use, and the holder is rotatable and ascendable with respect to the rod for magnetic use, thereby allowing the cylindrical member to rotate and move upward with a simple structure. The assembly of the conveying member can be simplified.

In addition, a flange is formed on the upper surface of the cylinder member to form a lower surface of the flange portion, and the pressing portion presses the orthogonal surface of the cylinder member and the flange portion lower surface, so that the flange portion can be reliably deformed by heating. The lower surface can be shaped by the shaping surface of the cylinder member.

Therefore, during heating, the lower surface of the flange portion is reliably heated and the heat is not lost by the tube member, thereby making it possible to ensure crystallization of the flange portion that is difficult to thickly crystallize. You can make sure.

In another aspect of the present invention, there is provided an apparatus for crystallizing the neck portion of a preform, wherein the neck portion crystallization apparatus of the preform has a neck portion and a tubular body portion having a bottom following the neck portion.

A conveying path for holding and conveying the preform on a conveying member;

Supply unit for supplying the preform to the conveying member,

Heating unit for heating the neck portion of the preform supplied to a crystallization temperature,

Cooling unit for cooling the heated neck portion and

A take-out part for taking out the preform having the cooled neck part;

The supply portion and the conveyance path are synchronously driven by the same drive source, and the supply portion can transfer the preform to the conveyance member in synchronization with the conveyance timing of the conveyance member.

According to the present invention, the preform can be reliably transferred from the supply unit to the transfer unit, and the structure can be simplified and the cost can be reduced by using one drive source.

In this case, the preform may be continuously conveyed along the conveyance path instead of intermittently conveyed. In this case, it is preferable that the said supply part is provided with the screw conveyor which carries continuously the alignment of the said preform, and the conveyance mechanism which receives and conveys this continuously conveyed said preform continuously and conveys it to the said conveyance member.

With such a configuration, the preform can be continuously transferred from the supply portion to the transfer member without stopping.

Neck part crystallization apparatus of the preform which concerns on another aspect to this invention

A conveying path for conveying a plurality of preforms having a neck portion and a tubular body portion having a bottom subsequent to the neck portion,

A heating part installed in the middle of the conveying path and heating the neck part to a crystallization temperature;

Cooling unit for cooling the neck portion heated in the heating portion,

A take-out part for taking out the preform having the cooled neck part;

The conveying path is provided with a conveying member for storing the body portion of the preform and conveying the preform in a state in which the neck portion is exposed,

The cooling unit

A cooling core inserted into the neck portion of the heated preform to cool the neck portion,

And a centering member for centering the conveying member when at least the cooling core is inserted into the neck portion.

In this way, even if the preform and the cooling core are shifted, at least when the cooling core is inserted into the neck, the conveying member is centered by the centering member. Accordingly, problems such as irrationality caused by misalignment, for example, the cooling core deforms the neck portion of the preform can be solved.

Here, in the case where the conveying path has a conveying chain that is configured to be fixed to the conveying member, misalignment easily occurs in the conveying member, so that the above-described structure becomes more effective.

In addition, when the conveying member is conveyed continuously without being intermittently conveyed by the conveying chain, the centering member may also be conveyed continuously together with the conveying member.

In order to drive this continuous conveying centering member, it is preferable to provide the centering cam follower which moves along the centering cam.

Neck part crystallization apparatus of a preform according to another aspect of the present invention

A conveying path for conveying a plurality of preforms having a neck portion and a bottomed cylindrical body portion following the neck portion,

A heating part installed in the middle of the conveying path and heating the neck part to a crystallization temperature;

Cooling unit for cooling the neck portion heated in the heating unit and

A take-out part for taking out the preform having the cooled neck part;

The conveying path includes a plurality of conveying members for storing the body portion of the preform and conveying the preform in a state where the neck portion is exposed.

The cooling unit

A cooling core inserted into the neck of the heated preform and cooling while shaping the inner surface of the neck;

And a release tube member for contacting an opening end surface of the neck portion to release the cooling core from the inner surface of the neck portion when the cooling core is taken out of the neck portion.

By inserting a cooling core into the neck of the heated preform, the neck is cooled from the inner surface and taken out from the end of the heating of the preform. Therefore, the molding cycle can be shortened and the shaping cycle can be shortened at the same time as cooling. Can be.

Further, when the cooling core is removed from the neck portion after cooling the neck portion by the cooling core, the release tube member contacts the neck opening end surface of the preform, thereby preventing the preform from rising. For this reason, the cooling core from inside the neck part can be taken out reliably, and the structure suitable for automation can be provided.

The neck crystallization apparatus of the preform includes a first cam, a first cam follower that moves along the first cam to set a height position of the cooling core, and a height position of the release tubular member that moves along the first cam. It may further include a second cam follower for setting the.

This makes it possible to reliably set the height positions of the cooling core and the mold release member along the first cam.

In addition, a second cam for forcibly inserting the cooling core into the neck part by regulating the height position of the first cam follower may be further provided.

The second cam allows the cooling core to be reliably and forcibly fit into the neck while being arranged in close contact with the neck.

At this time, it is preferable to further provide elevating means for elevating the second cam.

This lifting means is operated, for example, in the management of the apparatus to move the second cam by the lifting means, and sets it to a position where the cooling core cannot be inserted into the neck portion. At the time of this management, conveyance of a preform may be stopped and heating may be performed. In this case, the neck portion of the preform is excessively heated to increase the shrinkage of the neck portion than during normal operation. As such, it is dangerous to forcibly insert the cooling core into the excessively constricted neck, so that the cooling core cannot be inserted. In addition, since the preform heated excessively is discarded as a defective product, it is not necessary to cool and shape the sheet by the cooling core.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described in detail with reference to drawings.

1-6 is a figure which shows the neck crystallization apparatus of the preform which concerns on one Embodiment of this invention.

The preform 10 has a neck portion 12 having an opening as shown in FIG. 3, a cylindrical body portion 14 having a bottom following the neck portion 12, and a flange portion 16 formed at the bottom of the neck portion. It is provided with, for example, injection molding with polyethylene terephthalate (PET) resin.

And the neck part 12 is comprised so that it may whiten-crystallize with the crystallization apparatus 18 which concerns on this embodiment.

As shown in FIG. 1, the crystallization apparatus 18 is provided with the conveyance path 20 for carrying out the crystallization by conveying the preform 10 on the base 1, and heating it in the middle of the conveyance.

The conveying path 20 includes two first and second linear conveying paths 22 and 24 that are parallel to each other in a track shape, and first and second semicircular conveying paths 26 and 28 on both ends.

The conveying chain 32 is pulled tensionlessly along this track-shaped conveyance path 20 in an endless shape.

As shown in FIGS. 1-4, the preform 10 is hold | maintained by the many conveyance member 30 fixed to the conveying chain 32, and is conveyed in parallel.

This conveyance member 30 is provided in the conveyance path 20, and conveys the preform 10 in two rows, and can convey more preform 10 simultaneously.

The conveying chain 32 is fixed to the inner side surfaces of these many conveying members 30 as shown in FIG.2 and FIG.4.

The conveying chain 32 is pulled in an endless shape along the track-shaped conveying path 20.

On the other hand, as shown in Fig. 1, the endless conveying chain 32 has two sprockets 34a and 34b which rotate around the center of the first and second semicircular conveyance paths 26 and 28 as the rotation center. Rotation is driven by engagement.

Since these 1st, 2nd semi-circle conveyance paths 26 and 28 have almost the same structure, the specific structure is demonstrated with reference to the 2nd semi-circle conveyance path 28. As shown in FIG.

At the center of the second semi-circular conveyance path 28, the support shaft 80 is fixed to the base 1 as shown in FIG.

The support shaft 80 is rotatably supported by the sprocket 34a and the gear 88.

On the other hand, in the base 1, a motor (not shown) is fixed, and the sprocket 34a is rotationally driven through the gear 88 by the driving of the motor, and the conveying chain 32 meshes with the sprocket 34a. The conveyance member 30 fixed to) is driven continuously along the conveyance path 20.

In addition, although the sprocket 34b (not shown) is rotatably supported by the support shaft 80 also in the 1st semi-circle conveyance path 26, the gear for rotationally driving this sprocket 34b, The motor and the like are not arranged.

The sprocket 34b installed in the first semi-circular conveyance path 26 has the driving force of the sprocket 34a on the side of the second semi-circular conveyance path 28 transmitted through the conveying chain 32, and is transmitted to the conveying chain 32. By rotating follower.

The conveyance member 30 is provided with the cylinder member lifting block 48 and the conveyance block 36, as shown in FIG. The cylindrical member rising block 48 includes a cylindrical member 42 covering the outer circumference of the body portion 14 of the preform 10 and a bottom member 44 which receives the bottom of the preform 10 in the cylindrical member 42. ) And the holder 40 which supports the lower part of the cylinder member 42 are rotatably maintained by 2 sets of each. The conveying block 36 penetrates through the holder 40 and holds rotatably the magnetic rod 46 which has the grooved pulley 38 at the lower end, and is fixed to the conveying chain 32.

The cylinder member raising block 48 is conveyed on the cylinder member rail 68 provided with the cam member 51 for a cylinder member raising at both ends, and arrange | positioned along the conveyance path 20. As shown in FIG.

The conveyance block 36 has a cam follower 52 and is conveyed on the lane 50 arrange | positioned along the conveyance path 20. As shown in FIG.

The bottom portion of the preform 10 is supported by the bottom member 44 as shown in FIG. 3 and is spaced a between the top surface of the tubular member 42 and the bottom surface of the flange portion 16 of the preform 10. ) Is formed. Moreover, the preform 10 is hold | maintained in this cylinder member 42 in the state which the neck part 12 was exposed.

The gap a prevents heat from being lost to the cylinder member 42 on the lower surface of the flange 16.

In addition, the upper surface of the cylindrical member 42 has a ring-shaped convex portion 41 having an inner diameter larger than the outer diameter of the flange portion 16 of the preform 10 and protruding from the lower surface of the flange portion 16. It is formed and is heated to the upper end of the body portion at the time of heating to cover so as not to crystallize.

By doing in this way, it can be reliably extended from just under the flange part 16 at the time of extending blow molding.

When the crystallization of the lower surface of the flange portion 16 is to be promoted, the above-described convex portion 41 may not be provided.

In addition, the upper surface of the cylinder member 42 is a regular surface for shaping the lower surface of the flange portion 16. When the convex part 41 is provided, as shown in FIG. 3, the bottom surface becomes a fixed surface.

In addition, the cylindrical member 42 is detachably attached to the holder 40 via the O-ring 43, and the spacer 45 is disposed below the bottom member 44 in correspondence with the length of the preform 10. It is installed so that conversion is possible.

Therefore, by replacing this spacer 45, it becomes possible to cope with the preform 10 of various lengths.

The bottom member 44 is provided with a gap a between the lower surface of the flange portion 16 of the preform 10 and the upper surface of the tubular member 42, as shown in FIG. 3, through the spacer 45. It is made to support the bottom of the preform 10 in the state having.

The holder 40 is rotatably provided with respect to the cylinder member raising block 48 provided with the cam member 51 for cylinder member raising.

In addition, the holder 40 is integrally rotatable with respect to the magnetic rod 46 and is engaged with the pin 47 on the magnetic rod 46 side and the slit 49 so as to be able to slide slightly upward and downward. have.

In the track-shaped conveying path 20, the first linear conveying path 22 is provided with a supply unit 58 for supplying the preform 10 to the conveying member 30 as shown in FIG. 1. The 1st, 2nd heating part 60a, 60b is provided in the 1st linear conveyance path 22 and the 2nd linear conveyance path 24 downstream from this supply part 58, respectively.

In addition, the heat insulating part 62 is provided in the 1st semi-circular conveyance path 26, and the cooling part 64 is provided in the 2nd semi-circular conveyance path 28, and the supply part 58 of the 1st linear conveyance path 22 is provided. The extraction part 66 is provided in the upstream.

The supply part 58 is comprised so that the preform 10 may be supplied in the middle of the 1st linear conveyance path 22.

This supply part 58 is equipped with the preform feeder which is not shown in figure which rotates and supplies the preform 10 accommodated inside.

The preform feeder is provided with two rows of supply shooters 70 extending substantially along the tangential direction.

The preform supply mechanism 72 is provided in the outlet end of this supply shooter 70.

This preform supply mechanism 72 transfers the screw conveyor 74 of two rows and the preform 10 to two conveyance members 30 of the conveyance path 20 as shown in FIG. 5 and FIG. The transfer mechanism 76 is provided.

As shown in FIG. 5, the two rows of screw conveyors 74 convey the preform 10 at a constant pitch by the two branch joints 154 based on the power from the sprocket 152 side.

Here, a rotation drive shaft 146 is provided to transmit power through the belt 142 and the sprocket 144 and rotate in synchronization with the output side of the motor of the conveying path 20. The sprocket 148 is fixed to this rotation drive shaft 146. The above-mentioned sprocket 152 is rotatable in synchronization with the motor of the conveying path 20 by being connected through the sprocket 148 and the belt 150.

And the preform 10 supplied by the supply shooter 70 is arrange | positioned at predetermined intervals, and it conveys continuously to the receiving part 156 side which is the conveyance mechanism 76. As shown in FIG.

The conveyance mechanism 76 carries out two rows of preforms 10 at the receiving section 156 while continuously rotating the two rows of retaining cores 160 along a substantially rectangular supply conveying path 158. It receives and transfers the two rows of preforms 10 to the conveyance member 30 on the conveyance path 20 by the conveyance mechanism 162. As shown in FIG.

The supply conveying path 158 is provided with the supply conveying chain 168 which spreads over the drive sprocket 164 and three driven sprockets 166 as shown in FIG. The drive sprocket 16 is installed in the rotation drive shaft 146 to rotate synchronously with the motor of the conveying path 20. A plurality of supply conveying blocks 170 holding the holding core 160 are fixed to the supply conveying chain 168, and the supply conveying cam follower 172 provided in the supply conveying block 170 is fixed. It is made to move along the supply conveyance rail 174. FIG.

The two rows of retaining cores 160 are slidably installed in a vertical direction with respect to the supply conveying block 170, and a retaining core cam follower 176 is attached to an upper end thereof.

In addition, the lower end of the holding core 160 is provided with a split ring 182 that can hold the preform 10 from the inside.

In the supply block 170 for supply, the drop commer block 180 is held to be movable in the vertical direction through the slide shaft 178.

The slide shaft 178 is provided with a first spring 184 for return of the retaining core 160 and a second spring 186 for return of the dropcomer block 182.

In addition, a dropping cam follower 192 is provided at the upper end of the slide shaft 178.

The dropcomer block 182 is provided with a dropcomer 188 that abuts against the upper end of the preform 10 and causes the preform 10 to fall from the split ring 182.

The receiving unit 156 is provided with a retaining core lowering cam 190 for lowering the retaining core 160 to insert the split ring 182 into the preform 10.

Therefore, when the supply conveying block 170 is conveyed to the receiving unit 156 side, the retaining core cam follower 176 is pushed down to fit the retaining core lowering cam 190, and the split ring 182 is removed. It descends gradually and enters the neck part 12 of the preform 10, and the diameter is reduced and the preform 10 is maintained from the inside by the reaction force.

After that, it gradually rises and takes out the preform 10 from the screw conveyor 74, and the preform 10 is conveyed to the conveyance part 162 side.

The transfer core 162 lowers the retaining core 160 to insert the preform 10 into the cylindrical member 42 of the conveying member 30, and the drop core 180 for the drop core 180 and the drop commer block 180. The falling commer lowering cam 196 for lowering the preform 10 and dropping the preform 10 from the holding core 160 by the falling commer 188 is provided.

Therefore, when the supply conveying block 170 is conveyed to the conveying part 162 in the state which hold | maintained the preform 10, the retaining core cam follower 176 will be pushed down in engagement with the retaining core lowering cam 194. The preform 10 gradually descends to enter the cylinder member 42.

Accordingly, the falling cam follower 192 is engaged with the falling commer descending cam 196, and the falling commer 188 descends together with the falling commer block 180 and presses the upper end of the preform 10 to divide the ring ( The preform 10 is dropped into the cylinder member 42 from the 182.

Thereafter, the holding core 160 and the falling comer block 180 are gradually raised to be conveyed to the receiving portion 156 side.

The first and second heating units 60a and 60b include first and second heating boxes 69a and 69b provided along the first and second linear conveyance paths 22 and 24.

In this heating box 69a, 69b, as shown in FIG. 2, the near-infrared heater 67 is installed in the both sides of the neck part 12 corresponding position which carried the conveyance path of the preform 10, for example, and the neck part 12 is carried out. ) And the flange portion 16 can be heated to a crystallization temperature.

In addition, the near infrared heater 67 is provided with the reflecting plate 65, and reflects the light from the near infrared heater 64 so that the neck part 12 and the flange part 16 can be heated efficiently.

In addition, as shown in FIG. 2, an insulation member 63 is provided at the center of the parallel conveyance path of the two preforms 10. This heat insulation member 63 prevents the heating wire from two near-infrared heaters 67 reaching each neck part 12 of the left and right two preforms 1 of FIG. The heater 67 on the left side of FIG. 2 heats only the neck portion 12 of the preform 10 on the left side by the heat insulating member 63. Similarly, the heater 67 on the right side of FIG. 2 heats only the neck portion 12 of the preform 10 on the right side.

Moreover, the mechanism for rotating the preform 10 is provided in the 1st, 2nd heating part 60a, 60b.

That is, in the first and second heating boxes 69a and 69b, the grooved belt 92 placed on a magnetic pulley (not shown) at a position opposite to the grooved pulley 38 moving together with the transfer member 30. ) Is installed.

The grooved belt 92 is disposed over almost the entire length of the first and second heating boxes 69a and 69b.

Therefore, the preform 10 carried in the 1st, 2nd heating part 60a, 60b is engaged with the grooved pulley 38 and the grooved belt 92 of the lower end of the magnetic rod 46, The cylindrical member 44, which holds the preform 10, is rotated together with the holder (4).

The heat insulation part 62 covers the 1st semi-circular conveyance path 26 with the heat insulation cover 94, and the preform 10 heated by the 1st heating part 60a is conveyed to the 1st semi-circular conveyance path 26, and is Insulation of the preform 10 is performed over to 1 heating part 60b.

The cooling part 64 conveys the preform 10 heated by the 1st, 2nd heating part 60a, 60b to the 2nd semi-circular conveyance path 28 from the 2nd heating part 60a to the extraction part 66. In the meantime, the preform 1 is cooled and shaped.

That is, the cooling unit 64 is inserted into the neck portion 12 of the preform 1 conveyed to the second semi-circular conveying path 28 as shown in FIG. 4 to cool the neck portion 12 from the inner surface and at the same time the neck portion. The inner surface of the neck portion 12 is brought into contact with the upper surface of the flange portion 16 when the cooling core 96 is formed in two rows and the cooling core 96 is pulled out of the neck portion 12. And a plurality of release cylinder members 98a for releasing the cooling core 96.

Instead of the flange portion 16 of the preform 10 instead of the flange portion 16a shown in FIG. 4, the inner surface of the neck portion 12 and the cooling core 96 are brought into contact with the opening end surface of the neck portion 12. You may provide the some mold release cylinder member 98b to mold-release (refer FIG. 7).

As shown in FIG. 7, deformation of the flange portion 16 can be prevented by contacting the opening end surface of the neck portion 12.

In addition, although the following structural description demonstrates the cylindrical member 98a for release shown in FIG. 4, it is applicable to the mold release cylindrical member 98b for FIG.

The cooling core 96 and the release cylindrical member 98a are rotatable in conjunction with the sprocket 34a via the interlock mechanism 100 and are liftable by the elevating mechanism 102.

The interlock mechanism 100 has a rotating plate 104 in parallel with the upper region of the sprocket 34a.

The rotating plate 104 is fixed to the sprocket 34a by the connecting shaft 106 and rotates integrally.

Two rotary guide shafts 108 and 110 extending along the vertical axis of the rotary plate 104 are fixed along the circumferential shape at intervals corresponding to the transfer member 30.

The upper part of the guide shafts 108 and 110 is fixed to the plate 112 while the upper end of some of the guide shafts 110 is fixed to the coolant distributor support plate 116 supporting the coolant distributor 114 and the coolant distributor support plate 116 is also fixed. It is possible to rotate with the rotating plate 104.

Further, the cooling core fixing plate 118 on the upper side and the release tube member fixing plate 120 on the lower side of the guide side 108 and 110 are provided to be capable of lifting up and down.

The cooling cores 96 connected to the cooling water distributor 114 through the cooling hoses 122 are taken out to each cooling core fixing plate 118 in a state of protruding downward.

The outer diameter of the cooling core 96 is formed corresponding to the inner diameter of the neck portion 12 of the preform 10.

Holes for penetrating the cooling core 96 are formed in each release cylinder member fixing plate 120, and the release cylinder member 98a protrudes downward so as to cover the cooling core 96 from around the hole. have.

The inner diameter of this mold release member 98a is larger than the outer diameter of the neck part 12, and is formed in the size which can contact the upper surface of the flange part 16. As shown in FIG.

The lifting mechanism 102 is fixed to the upper end of the support shaft 80 and cam 126 circumferentially installed on the cam fixing plate 124 located above the rotating plate 104, as shown in Figs. Cam follower 128 for cooling provided in the both ends of the cam 132, the cooling core fixing plate 118, and the release member fixing plate 120 for circumference | surroundings which were provided around the 2nd semi-circular conveyance path 28 side of the cam fixing plate 124 ) And a cam follower 130 for release.

This cooling cam follower 128 (first cam follower) and release cam follower 130 (second cam follower) are regulated by the cams 126 and 132 (first cam) for cooling core 96 and release. The cylinder member 98a can be raised and lowered.

The cam 126 of the cam fixing plate 124 regulates the cooling cam follower 128 and the release cam follower 130 located in the inward direction, and the cam 132 around the cam fixing plate 124 is located in the outward direction. The cooling cam follower 128 and the release cam follower 130 is configured to regulate.

The cam 126 includes a cooling core inserting portion 126a, a cooling core inserting holding portion 126b, a cooling core ejecting portion 126c, a release cylinder member rising portion 126d, and a rising holding portion 126e. The cam 132 is provided between the cooling core insertion part 126a and the mold release member 126d for release.

In particular, the cooling core inserting portion 126a restricts the upward direction of the cooling cam follower 128 by the cam 134 (second cam), and forces the cooling core 96 to force the neck portion 12 of the preform 10. It is set to push in). 4, the cam 134 of the outer side of the 2nd semi-circular conveyance path 28 is not shown. In addition, since FIG. 4 already shows the state after the cooling core 96 is inserted into the neck part by the cam 134, the cam follower 128 is not in contact with any member.

By raising and lowering the cam 134 in the cam lifting cylinder 135, the situation in which the cooling core 96 is forcibly pushed into the excessively heated neck portion 12 can be prevented. Such a situation occurs, for example, in the management of the device. In the management of the apparatus, the conveyance of the preform 10 is stopped while the neck portion 12 of the stopped preform 10 is continuously heated for a longer time than the heating time in the normal process. Thereafter, when the conveyance of the preform 10 is resumed, the cooling core 96 is inserted into the neck portion 12 heated in this manner as usual. However, since the neck portion 12 heated for a long time also has a large amount of shrinkage, there is a risk that the cooling core 96 is forcibly pushed in. In such a case, when the cam 134 which pushes down the cooling core 96 by the cam lifting cylinder 135 is raised, the cooling core 96 is forced by the cam 134 so as to force the neck portion of the preform 10 ( 12) can be prevented from being pushed in.

In addition, in the cooling unit 64, when the cooling core 96 is lowered, the upper surface of the cylinder member 42 is pressed against the lower surface of the flange portion 16 so that the lower surface of the flange portion 16 is shaped. Doing.

That is, the press cam (not shown) which comprises a press means protrudes and is provided in the position on the base 1 corresponding to the press position of the cylinder member 42. As shown in FIG. When the conveying member 30 is conveyed to this press cam position, the cylinder member raising cam follower 46 installed in the lower end of the cylinder member raising rod 48 will be mounted on the press cam, and the cylinder member raising rod 48 will be raised. Through this, the cylinder member 42 raises by the space | interval a, and presses the lower surface of the flange part 16. As shown in FIG.

The upper surface of the cylinder member 42 is formed in the final shape of the lower surface of the flange part 16, and can shape the lower surface of the flange part 16 shrink | contracted and deformed by heat processing.

In addition, corresponding to the lower end of the magnetic rod 46 for centering the preform 10 and the cooling core 96 held on the conveying member 30 over the cooling section 64 of the second conveying path 28. There is a centering core 84 fixed to the sprocket 34a in position.

The centering core 84 usually has a spring 82 for applying downward force and a cam follower 86 for centering. The centering cam 84 is placed on the lower end of the rod 46 by placing the cam follower 86 on the center 1 on the centering cam 87 disposed corresponding to the cooling core insert 126a on the base 1. Abutting centers firmly.

As shown in FIG. 1, the blowout part 66 includes a blowout opening / closing member 136 that grips the flange 16 of the plurality of preforms 10, and a blowdown lifting cylinder that lifts the blowout opening / closing member 136 ( 138 and a take-out retraction cylinder 140 for horizontally moving the take-up lifting cylinder 138 and the take-off opening / closing member 136 to a take-out position outside the machine.

Then, the ejecting opening / closing member 136 is lowered in the open state to stand by. When the predetermined number of preforms 10 are provided in the ejection section 66, the ejection opening / closing member 16 is closed to grab the predetermined number of preforms 10, and the ejection opening / closing member is removed by the ejection lifting cylinder 138 as it is. The preform 10 is pulled out of the barrel member 42 by raising 136. Further, the preform 10 is horizontally moved to the ejection position outside the machine by the ejection retraction cylinder 140, and then the ejection opening and closing member 136 is opened to eject the preform 1.

The present invention is not limited to the above embodiment and can be modified in various forms within the scope of the gist of the present invention.

For example, in the above embodiment, two rows of preforms are conveyed in parallel in the conveyance path, but one or three or more rows of preforms can be conveyed.

The neck crystallization apparatus of the preform of the present invention can achieve neck crystallization of a larger amount of preform and improve productivity.

Furthermore, the neck crystallization apparatus of the preform of this invention enables the simplification of the assembly | assembly of the member which conveys a preform, further simplifying a structure, and improving stability.

Claims (14)

An apparatus for crystallizing the neck portion of a preform having a neck portion and a bottomed cylindrical body portion subsequent to the neck portion, A plurality of conveying members each holding a plurality of preforms, The plurality of conveying members are fixed at predetermined intervals and are conveying bodies for conveying the plurality of preforms in parallel; A supply unit for supplying the plurality of preforms to each of the plurality of conveying members; A heating unit for heating the neck portion of the supplied plurality of preforms to a crystallization temperature, A cooling unit for cooling the heated neck portion, and A neck part crystallization apparatus of a preform, characterized by comprising a blowout part for taking out the plurality of preforms having the cooled neck part. The method of claim 1, Each of the plurality of conveying members has a conveying block fixed to the conveying chain, The conveying block has two cylinder members for holding two preforms, Conveying the two preforms along a parallel conveying path, Preform neck crystallization apparatus, characterized in that each of the two cylindrical member accommodates the body portion of the preform to expose and maintain the neck portion. The method of claim 2, The heating unit Two heaters disposed at both sides of the parallel transport path and heating two neck portions exposed from the two cylinder members; A neck crystallization apparatus of a preform, characterized in that it is arranged at the center of the parallel conveying path, and provided with a heat insulating member for blocking heat from the two heaters. The method of claim 2, The preform has a flange portion formed between the neck portion and the body portion, The conveying member A bottom member receiving a bottom portion of the preform inserted into the tub member; A holder installed at the bottom of the barrel member, and A magnetic rod inserted into the barrel member through the holder, An upper surface of the tubular member is provided with a shaping surface for shaping the lower surface of the flange portion The holder is integrally rotatable and ascendingly engaged with the magnetic rod, A gap is provided between an upper surface of the tubular member and a lower surface of the flange portion of the preform when the preform is being conveyed at least to the heating section, And the lower surface of the flange portion and the shaping surface of the tubular member are pressed, and the lower surface of the flange portion is shaped by the holder being pressed upward by the pressing means. An apparatus for crystallizing the neck portion of a preform having a neck portion and a bottomed cylindrical body portion subsequent to the neck portion, A conveying path for holding and conveying the preform on a conveying member; Supply unit for supplying the preform to the conveying member, Heating unit for heating the neck portion of the preform supplied to a crystallization temperature, A cooling unit for cooling the heated neck portion, and A take-out part for taking out the preform having the cooled neck part; The supply section and the conveyance path are synchronously driven by the same drive source, and the supply section conveys the preform to the conveying member in synchronization with the conveying timing of the conveying member. The method of claim 5, The preform is continuously conveyed along the conveying path, The supply unit Screw conveyor for continuous conveying while aligning the preform, A neck crystallization apparatus for a preform, characterized by comprising a conveying mechanism for receiving and conveying the continuously conveyed preform continuously to the conveying member. A conveying path for conveying a plurality of preforms having a neck portion and a bottomed cylindrical body portion following the neck portion, A heating part installed in the middle of the conveying path and heating the neck part to a crystallization temperature; A cooling unit cooling the neck portion heated in the heating unit, and A take-out part for taking out the preform having the cooled neck part; The conveying path is provided with a conveying member for conveying the preform in a state of receiving the body portion of the preform and exposing the neck portion, The cooling unit A cooling core inserted into the neck of the heated preform to cool the neck; And a centering member for centering the conveying member when at least the cooling core is inserted into the neck portion. The method of claim 7, wherein The conveying path is provided with a neck chain crystallization apparatus that is fixed to the conveying member is driven. The method of claim 8, The conveying member is continuously conveyed by the conveying chain, And the centering member is continuously conveyed together with the conveying member. The method of claim 9, The centering member has a necking crystallization apparatus of the preform, characterized in that it comprises a centering cam follower moving along the centering cam. A conveying path for conveying a plurality of preforms having a neck portion and a bottomed cylindrical body portion following the neck portion, A heating part installed in the middle of the conveying path and heating the neck part to a crystallization temperature; A cooling unit cooling the neck portion heated in the heating unit, and A take-out part for taking out the preform having the cooled neck part; The conveying path is provided with a plurality of conveying members for storing the body portion of the preform and conveying the preform in a state in which the neck portion is exposed, The cooling unit A cooling core inserted into the neck portion of the heated preform and cooling while shaping the inner surface of the neck portion; And a release tube member for contacting an opening end surface of the neck portion to release the cooling core from the inner surface of the neck portion when the cooling core is taken out of the neck portion. The method of claim 11, 1st cam, A first cam follower moving along the first cam to set a height position of the cooling core; and And a second cam follower for moving along the first cam to set the height position of the release cylinder member. The method of claim 12, And a second cam for regulating the height position of the first cam follower and forcibly inserting the cooling core into the neck portion. The method of claim 13, And an elevating means for elevating said second cam.