JPH10109356A - Forming device of container and forming method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow to realize space-saving and cost reduction by a method wherein the controlling of the local temperature of a preform can be performed without enlarging a device. SOLUTION: This device has a heating part 42 for heating a synthetic resin preform 28 up to its proper temperature for blow molding or higher, a blow molding part 44 for blow-molding the preform 28 heated at the heating part 42, a waiting part 50 for waiting the heated preform 28 between the heating part 42 and the blow molding part 44 and a conveying means 34 for conveying the preform 28 under the state being held with conveying members 36 from the heating part 42 through the waiting part 50 to the blow molding part 44. The waiting part 50 has a cooling means 52 for controlling the temperature of the preform 28 conveyed from the heating part 42, a positioning plate 54 for positioning the conveying members 36 and a movingly driving means 56 for movingly driving the cooling means 52 and the positioning plate 54 to and from the preform 28 and the conveying members 36. In addition, the positioning plate 54 positions the conveying members 36 by coming into contact with the conveying members 36.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container molding apparatus and a container molding method, and more particularly to a container molding method in which a preform is conveyed by a conveying member holding the preform, heated, and then blow molded to form the container. The present invention relates to a molding apparatus and a method for molding a container.

[0002]

BACKGROUND OF THE INVENTION As a method for blow molding a container from a cylindrical preform (parison), a method called a cold parison method or a two-stage method, a hot parison method or a one-stage method. There is a method called. In the cold parison method (two-stage method), it is necessary to heat a preform (parison) at room temperature to a temperature at which blow molding can be performed, that is, a so-called appropriate temperature for blow molding. Since the reform (parison) retains heat at the time of injection molding, it is not necessary to heat it for as long as the cold parison method (two-stage method), but it is necessary to heat it to an appropriate temperature or more for blow molding.

[0003] In any of these methods, the heating up to the temperature suitable for blow molding is to uniformly heat the preform in the circumferential direction.

On the other hand, when blow molding a container having a special shape such as a flat container or the like, a preform which is merely heated and heated has a portion which is greatly stretched and a portion which is not stretched so much. Therefore, a thin portion and a thick portion are generated in the container.

[0005] In order to avoid such a state, it is necessary to provide a temperature distribution such that the temperature of the largely stretched portion of the preform is lower than that of the other portions. In order to provide such a temperature distribution, it is necessary to perform local temperature control on the preform.

[0006] If a temperature control device for locally controlling the temperature of such a preform is added, the size of the molding device becomes large, so that space cannot be saved and the cost increases.

Further, in order to stably obtain the desired molding quality by blow molding the preform subjected to the above-mentioned heating and heating, the temperature difference between the inside and outside of the preform is reduced, or the preform temperature is balanced. For the purpose of obtaining, it is also performed to arrange a standby position.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a container molding apparatus and a container molding method capable of locally controlling the temperature of a preform without increasing the size of the apparatus, thereby saving space and reducing costs. Is to provide.

Another object of the present invention is to provide a container molding apparatus and a container molding method capable of performing accurate local temperature control with a simple configuration.

[0010]

In order to achieve the above object, the invention according to claim 1 comprises a heating section for heating a preform made of a synthetic resin to a suitable temperature for blow molding, and a preform heated by the heating section. A blow molding section for blow molding, a standby section for waiting the preform heated between the heating section and the blow molding section, and a blow molding section from the heating section to the blow molding section via the standby section. A container forming apparatus having a transport unit that transports a reform while holding the reform on a transport member, wherein the standby unit is configured to control a temperature of the preform transported from the heating unit, Positioning means for positioning a member, and forward and backward driving means for individually or integrally driving the temperature control means and the positioning means individually or integrally with the preform and the conveying member, -Decided Me means is characterized by positioning the conveying member in contact with the conveying member.

According to the present invention, a temperature control means is provided in a standby section disposed between the heating section and the blow molding section, and the temperature of the preform is adjusted while the temperature of the preform is relaxed in the standby section. By effectively utilizing the empty space in the standby section, the preform can be temperature-controlled without providing a separate temperature control section, and the space can be saved without increasing the size of the container forming apparatus, and Cost can also be reduced.

[0012] Further, by having positioning means for positioning the conveying member for conveying the preform, the temperature can be adjusted in a state where the conveying member is positioned, so that accurate temperature adjustment can be performed and the temperature adjusting means and the positioning unit can be positioned. The device can be simplified by moving the unit forward and backward by the simple operation of the forward and backward driving unit.

According to a second aspect of the present invention, in the first aspect, the temperature control means is a cooling means for cooling the preform.

According to the present invention, it is effective when the preform is locally cooled.

The present invention is particularly effective when a specially shaped container such as a flat container is formed.

According to a third aspect of the present invention, in the first aspect, the temperature adjusting means is a heating means for heating the preform.

According to the present invention, it is effective when the preform is locally heated.

Particularly, the effect is great when the trunk portion of the preform corresponding to the shoulder portion of the container is heated so as to be easily stretched, or when a thick portion which is insufficiently heated by the heating portion is heated. Things.

According to a fourth aspect of the present invention, in the first aspect, the temperature adjusting means is a temperature adjusting member for adjusting the temperature by contacting the temperature adjusted surface of the preform.

According to the present invention, for example, by using a contact-type temperature control member such as a cooling block or a heating block,
The temperature of the preform can be adjusted according to the purpose. In particular, in the case of the contact type, it is effective when it is desired to clarify the temperature control area.

According to a fifth aspect of the present invention, in the first aspect, the temperature adjusting means is a temperature adjusting member for adjusting the temperature in a non-contact manner with the surface to be adjusted of the preform.

According to the present invention, the temperature of the preform can be adjusted according to the purpose by a non-contact type temperature adjusting member using, for example, cooling air, heated air, a radiant heat source, or the like. In particular, in the case of the non-contact type, it is advantageous in that the temperature can be controlled without applying mechanical pressure to the preform and that the boundary between the temperature-controlled portion and the non-temperature-controlled portion is not clear, thereby improving the appearance of the product. is there.

According to a sixth aspect of the present invention, in the first aspect, the transport member forms a circulating transport path that is circulated and transported by a transport unit, and the temperature control unit, the positioning unit, and the forward / backward drive unit are connected to the circulating transport path It is characterized by being arranged outside the road.

According to the present invention, there are relatively few devices outside the circulating conveyance path, and the empty space is effectively used by installing the temperature control means, the positioning means, the forward / backward driving means and the like using this empty space. And installation can be performed easily.

According to a seventh aspect of the present invention, in the first aspect, the surface of the preform which is located in a direction in which the preform is transported is a temperature control surface, and the temperature control means is provided in a direction in which the preform is transported. It is characterized in that it can be moved forward and backward in the intersecting direction.

According to the present invention, temperature control can be performed only by moving the temperature control means straightly to and from the temperature control surface, and the apparatus can be simplified.

According to an eighth aspect of the present invention, in the first aspect, the standby section has a preform rotating means for adjusting the orientation of the preform in the blow molding section at the time of blow molding.

According to the present invention, by rotating the preform in accordance with the direction of the blow molding section, the temperature can be controlled without moving the temperature control means in accordance with the direction of the blow molding section. The device can be simplified.

According to a ninth aspect of the present invention, in the ninth aspect, the conveying member has a sprocket for rotating when heated by a heating unit, and the preform rotating means includes a rack meshing with the sprocket of the conveying member. Is provided so as to be able to move forward and backward.

According to the present invention, a simple structure in which the rack meshing with the sprocket is moved forward and backward by using the sprocket for rotation provided on the conveying member,
The preform can be rotated reliably and accurately.

According to a tenth aspect of the present invention, when a preform is held by a conveying member provided in a conveying means and is conveyed from a heating section to a blow molding section, the preform is disposed between the heating section and the blow molding section. A method of forming a container, wherein the container is obtained by blow molding after adjusting the temperature of the preform in the standby unit, wherein the standby unit waits the temperature control unit at a position outside the transport region of the preform. Moving the transport member holding the preform by the transport unit from the heating unit to the standby unit, stopping the transport member in the standby unit, and moving the temperature control unit forward to the preform side Adjusting the temperature of the temperature-adjusted surface of the preform by a temperature adjusting means for a certain period of time after positioning the conveying member; and, after the temperature adjustment, changing the temperature adjusting means to the preform. A step of retracting retracted position outside transmission area, and a step of moving to the blow molding unit in the conveying member holding the preform by the conveying means,
And blow molding the preform with high-pressure air at the blow molding unit.

According to the present invention, the temperature control means is made to stand by at a position outside the transport area of the preform, and when the preform is transported, the transport member is positioned, and the temperature is adjusted by the temperature control means. By retracting and retreating to a position outside the transfer area, the temperature can be adjusted without hindering the transfer of the transfer member, and the temperature-adjusted preform is blow-molded by the blow molding unit.
A container having a desired shape and thickness can be formed.

An eleventh aspect of the present invention is characterized in that, in the tenth aspect, after the step of adjusting the temperature by the temperature adjusting means, a step of rotating the preform in accordance with the orientation at the time of blow molding in the blow molding section is provided. And

According to the present invention, by rotating the preform in accordance with the direction of the blow molding section, blow molding can be performed in an optimal state in the blow molding section.

[0035]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 4 are views showing a container forming apparatus according to an embodiment of the present invention.

FIG. 1 is a plan view of a container forming apparatus.

The molding apparatus for the container 38 is roughly divided into a preform molding station 12 and a
A blow molding station 14 and a transfer section 16 located between the preform molding station 12 and the blow molding station 14 are provided.

The preform molding station 12 has injection core dies (not shown) at two positions separated by a rotation angle of 180 °, and rotates the injection core dies intermittently and circulates along a rotary conveyance path. It has a board 18. At each stop position of the injection core mold, an injection molding part 22 is provided at a position facing the injection device 20, and a take-out part 24 is provided facing the injection molding part 22. The injection molding section 22 has an injection cavity mold 26 that is driven to clamp relative to the injection core mold, and for example, simultaneously molds six preforms 28.

On the other hand, in the take-out section 24, the preform 28 can be taken out of the injection core mold by driving the injection core mold relatively to the preform 28.

In this embodiment, the neck of the preform 28 is formed by a neck cavity mold (not shown), and the preform 28 is held and rotated by the neck cavity mold and the injection core mold. It is transported to the take-out part 24 by the board 18.

In the take-out section 24, after the injection core mold is partially released, the preform 28 is released from the neck cavity mold so that the preform 28 is taken out.

The blow molding station 14 is attached to four sprockets 30, a transport chain 32 stretched over them, and a device (not shown) for driving the sprockets, such as an electric motor for rotating one sprocket or a hydraulic cylinder. And a transport means 34 for circulating transport constituted by a rack provided and a pinion attached to the sprocket.

A plurality of, for example, 24 transfer members 36 are fixed to the transfer chain 32 at a predetermined distance, and each of the transfer members 36 is attached to the preform 28 or the container 38.
Is to be supported. A receiving section 40 for receiving the preform 28 from the transfer section 16, a heating section 42 for heating the preform 28 received by the receiving section 40 to an appropriate temperature or more for blow molding, on the transport path of the transport member 36,
A blow molding unit 44 for obtaining the container 38 by stretching and blowing the preform 28 heated by the heating unit 42 and a container extracting unit 46 for taking the container 38 blow molded by the blow molding unit 44 out of the apparatus are provided. .

A heating device 43 is disposed in the heating section 42. The heating device 43 is provided with, for example, a plurality of infrared heaters extending along a conveying path arranged in the height direction of the preform, and passes through the heating device 43. At this time, the sprocket provided on the transport member 36 is meshed with the rotation chain so that the preform is rotated and the circumferential direction is uniformly heated.

The blow molding section 44 includes a blow mold clamping mechanism 4.
5 has a blow cavity mold 48 which is clamped to the preform 28, and for example, two preforms 28 are blow-molded.

The container take-out section 46 is operated by a take-out device 47
The container 38 is turned upside down and taken out in an upright state.

The transfer section 16 transfers the preform 28 taken out from the take-out section 24 of the preform molding station 12 to the receiving section 40 of the blow molding station 14.

At the take-out section 24 of the preform molding station 12, the same number of preforms 28 are taken out of the injection molding section 22 at the same time. At the delivery section 16, for example, six are taken out at the take-out section 24 at the same time. The preforms 28 are transferred to the receiving unit 40 two by two.

The preform molding station 12
In this example, the preform 28 is injection-molded in an upright state, whereas the delivery unit 16 turns the preform 28 upside down and delivers the preform 28 to the blow molding station 14 in an upright state.

Further, in the blow molding station 14, the transport means 34 is in a state of intermittently transporting the transport member 36, and the preform 28 heated between the heating section 42 and the blow molding section 44 is intermittently stopped. Is set as a standby unit 50 that temporarily waits.

Then, the preform 28 heated by passing through the heating device 43 of the heating unit 42 in the standby unit 50 waits for a certain period of time, so that the temperature difference between the outer surface and the inner surface of the preform 28 can be reduced. It has become.

The standby unit 50 includes a cooling unit 52 as a temperature control unit for controlling the temperature of the preform 28 conveyed from the heating unit 42, and a positioning plate 54 as a positioning unit for positioning the conveying member 36. , These cooling means 52 and positioning plate 54
8 and an advancing / retreating drive means 56 for advancing / retreating the transport member 36.

The cooling means 52 and the positioning plate 5
The fourth and forward / backward drive means 56 are arranged outside the circulating conveyance path of the conveying member 36 so as to effectively use the space outside the circulating conveyance path with relatively few devices.

2 to 4 show the temperature control means in the standby section.

The cooling means 52 has two pairs of openable and closable cooling blocks 58a and 58b, and each pair of cooling blocks 58a and 58b has a pair of openable and closable rods 60a and 60b, respectively, which are vertically arranged in parallel. It is in the state supported by.

Further, one cooling block 58a of each set
Are fixed to one opening / closing rod 60a, respectively, and penetrate the other opening / closing rod 60b. The other cooling block 58b is fixed to the other opening / closing rod 60b, and penetrates one opening / closing rod 60a. It is in the state where it was made.

Further, a pair of opening / closing rods 60a, 60b
Are arranged so as to be slidable in the axial direction, respectively, and a rack 62 is formed at a position facing the opening / closing rods 60a, 60b.
A pinion 64 that meshes with each of the racks 62 is provided between the racks 62.

The driving rod 68 of the opening / closing cylinder 66 is connected to one end of the other opening / closing rod 60b.

Accordingly, the driving rod 6 of the opening / closing cylinder 66
4 is driven in the direction of arrow A in FIG. 4, the other opening / closing rod 60b slides in the direction of arrow A, and
8b is moved in the direction A, along with the rack 62 and the pinion 64, one opening / closing rod 60a slides in the direction of arrow B, and one cooling block 58a is moved in the direction of arrow B to move the cooling blocks 58a and 58b. In this state, the preform 28 is sandwiched between the cooling blocks 58a and 58b, and the cooling blocks 58a and 58b contact only the both side surfaces of the body of the preform 28 to be cooled.

In this case, the cooling blocks 58a, 5a
8b is a length that extends over substantially the entire body of the preform 28, and the contact surface with the preform 28 is the preform 2
8 has a shape corresponding to a part of the outer shape of both side surfaces.

Further, here, the surfaces to be cooled, which are the surfaces to be temperature-controlled, of the preform 28 are both side surfaces located in the conveying direction of the preform 28, and by this cooling, the blow container is made almost uniform as a flat container at the time of blow molding. A thick container 38 can be formed.

The blow cavity mold 48 has a flat container-shaped cavity whose major surface is on the split surface side, and the preform 28 is housed in the blow cavity mold 48 such that the cooling portion is located in the longitudinal direction. It is supposed to be.

The positioning plate 54 is integrally attached to a lower portion of an attachment plate 70 to which the cooling means 52 is attached, and is bent in an L-shape toward the two transport members 36 from there. In this state, two engagement recesses 72 that engage with the two transport members 36 are formed.

The advancing / retracting driving means 56 includes a pair of parallel guide rods 74 provided on the rear surface of the mounting plate 70 so as to protrude in the horizontal direction, and a pair of guide rods 74 slidably receiving the pair of guide rods 74 above the support frame 76. It comprises a guide receiving member 78 and an advance / retreat driving cylinder 82 attached between the guide receiving member 78 of the support frame 76 and having a driving rod 80 connected to the mounting plate 70. Then, the mounting plate 7 is moved by the advance / retreat driving cylinder 82 through the driving rod 80.
0 is moved forward and backward, so that the cooling blocks 58a, 58
b and positioning plate 54 at the same time
And can be driven forward and backward with respect to the transport member 36.

Therefore, with the cooling blocks 58a, 58b opened by the opening / closing cylinder 66, the cooling blocks 58a, 58
b and the positioning plate 54 are retracted to stand by, the opening / closing cylinder 66 opens the cooling blocks 58a and 58b to stand by, and the conveying member 36 holds the preform 28 and is conveyed from the heating unit 42 and stopped. Then, when the cooling blocks 58a and 58b and the positioning plate 54 are advanced through the mounting plate 70 by the advance / retreat driving cylinder 82, the engaging recess 72 of the positioning plate 54
6, the cooling member 58a, 58b is opposed to the surface of the preform 28 which is located in the transport direction.

In this state, the cooling blocks 58a and 58b are closed by the opening / closing cylinder 66, and the preform 28 is cooled for a predetermined time.

After a lapse of a predetermined time, the opening / closing cylinder 6
When the cooling blocks 58a and 58b are opened by 6 and the cooling blocks 58a and 58b and the positioning plate 54 are retracted by the advance / retreat driving cylinder 82, the transporting member 36 and the preform 28 are released to be in a transportable state.

Next, a method of forming the container 38 using the above-described container forming apparatus will be described.

First, the preform molding station 12
Then, a plurality of, for example, six, preforms 28 are injection-molded in the injection molding section 22, the preforms 28 are held by a neck cavity mold and an injection core mold (not shown), and are conveyed to the take-out section 24 by the rotating disk 18. I do.

In the take-out part 24, a plurality of preforms 28 are released from the injection core mold and the neck cavity mold,
For example, six preforms 28 are taken out.

In the transfer section 16, the preforms 28 taken out simultaneously by the take-out section 24 are inverted two by two and transferred to the transport member 36 located in the receiving section 40 of the blow molding station 14 in an inverted state.

In the blow molding station 14, the preform 28 supported by the transport member 36 in an inverted state is intermittently transported by the transport means 34, and passes through a heating device provided in the heating section 42 to blow-mold the preform 28. After being heated to an appropriate temperature or higher, it is intermittently stopped by the standby unit 50 before being conveyed to the blow molding unit 44.

The appropriate temperature for blow molding here depends on the location of the preform and the specifications (thickness distribution, strength, etc.) required for the container.

In the standby section 50, the cooling blocks 58a, 58b and the positioning plate 54 are retracted by the advance / retreat driving cylinder 82, and the cooling blocks 58a, 58b are opened by the opening / closing cylinder 66 to stand by. In this state, the cooling blocks 58a and 58b and the positioning plate 54 are located outside the transport area of the preform 28,
This is a state in which the conveyance of the preform 28 is not hindered.

Next, in a state where the transport member 36 holding the preform 28 is stopped from moving from the heating section 42 to the standby section 50 by driving the transport means 34, the advance / retreat driving cylinder 82
The cooling block 58a, 58b and the positioning plate 54 are advanced to the preform 28 and the conveying member 36 side by the, and the conveying member 36 is positioned by the positioning plate 54.
a and 58b are closed, and the surface to be cooled located in the transport direction of the preform 28 for a certain period is cooled by the cooling blocks 58a and 58b.

The temperature and contact time of the cooling block are as follows:
It can be arbitrarily adjusted and set according to the thickness of the preform, the desired temperature difference, and the specifications required for the container.

Next, after cooling for a predetermined time, the cooling blocks 58a and 58b and the positioning plate 54 are retracted and retracted to a position outside the transport area of the preform 28 by the advance / retreat driving cylinder 82.

In this state, the transport member 36 and the preform 28 can be transported, and then the transport means 34 is driven to move the transport member 36 holding the preform 28 to the blow molding section 44.

Then, when the preform 28 is blow-molded by high-pressure air in the blow-molding section 44, the flat container 38 having a substantially uniform thickness is formed.

As a matter of course, the shape of the container is not limited to a flat shape, and the present invention can be applied to a container such as a polygonal one having a cross section whose distance from the preform wall is significantly different.

FIG. 5 to FIG. 9 show an embodiment for forming a desired portion thick or maintaining a thick state, instead of the above-described embodiment for making the container wall uniform. FIG.

In this embodiment, the preform 28, which is intermittently transported one by one at the blow molding station and held upside down by the blow molding transport member 36, is transferred from the heating section (not shown) to the standby section 50. The handle 86 is inserted into the preform 28 in a state where it is conveyed and stopped.

When inserting the handle 86, the conveying member 36 is positioned by the positioning means 94, and after the handle 86 is inserted, the body of the preform 28 corresponding to the engaging portion 88 of the handle 86 with the container body is inserted. The preform 2 is cooled by the cooling means 96, and
8 is rotated by rotating means 98 so as to match the direction at the time of blow molding.

The positioning means 94 includes a positioning plate 114 which is provided at a position facing the transfer member 36 and engages with the transfer member 36, and the positioning plate 114 is connected to the transfer member 3.
And a positioning cylinder 116 that moves forward and backward with respect to 6.

The cooling means 96 includes a positioning plate 114
It also has an air nozzle 118 made movable forward and backward by a positioning cylinder 116.

The air nozzle 118 is supported at a height position corresponding to the body portion of the preform 28 corresponding to the engaging portion of the container 38 engaged with the engaging portion 88 of the handle 86 during blow molding, and is positioned. When the plate 114 moves back and forth,
The air nozzle 118 is movable in a direction intersecting with the direction of movement of the positioning plate 114 so as not to interfere with the handle 86 inserted into the preform 28. Specifically, as shown in FIG. 9, the drive rod 126 of the drive cylinder 124 is attached to the attachment member 122 of the support rod 120 that holds the air nozzle 118 at a predetermined height, and the attachment member 122 The guide rod 130 is guided by the mounting bracket 128, and the drive rod 126 is driven by the drive cylinder 124 so that the air nozzle 118 is retracted from the handle 86, and the handle 86 and the preform 28 are moved.
The tip of the nozzle can move between a position where the tip of the nozzle faces the body of the preform 28.

The rotating means 98 includes a positioning plate 114
The rack 132 is provided integrally with the positioning plate 114 along the direction in which the rack 1 moves.
Reference numeral 32 denotes a sprocket 1 for rotating the preform 28 when heated by a heating unit 42 provided on the transport member 36.
It is possible to engage with 34 teeth.

The positioning plate 114 can be moved by the preform rotating cylinder 136 in a direction away from the conveying member 36 by a distance that the rack 132 rotates the conveying member 36 by 90 degrees.

The positioning means 94 and the rotating means 98
Is slightly lifted and lowered by a lifting cylinder 100.

Next, the operation state will be described.

First, when the preform 28 held in an inverted state by the conveying member 36 is conveyed to the standby section 50 and stopped, the positioning plate 114 is moved to the positioning cylinder 116.
With this, the transfer member 36 is engaged, and the transfer member 36 is positioned.

In this state, the handle 86 descends and the handle 86
Is inserted into the body of the preform 28.

Next, when the rack 132 is lowered by the elevating cylinder 100, the rack 132 is engaged with the sprocket 134 attached to the transport member 36, and the transport member 36 can be rotated via the sprocket 134.

In this state, the air nozzle 118 is moved by the drive cylinder 124 so that the nozzle tip is located between the preform 28 and the handle 86, and the container which engages with the engaging portion 88 of the handle 86 during blow molding. The body of the preform 28 corresponding to the body is cooled.

Next, the preform rotating cylinder 136
Then, the positioning plate 114 and the rack 132 are retracted, and the conveying member 36 is rotated by 90 degrees to adjust the position of the handle 86 to the direction of the blow cavity type handle receiving recess of the blow molding portion.

Further, from this state, the lifting cylinder 100
The rack 132 is raised by the
When the positioning plate 114 and the rack 132 are retracted from the transporting member 36 according to 6, the transporting member 36 holding the preform 28 with the handle 86 can be transported.

The present invention is not limited to the above embodiment, but can be modified to various embodiments within the scope of the present invention.

For example, in the above-described embodiment, a one-stage container forming apparatus has been described. However, the present invention is not limited to this example, and is applicable to a two-stage container forming apparatus.

In the above embodiment, the case where six preforms are injection-molded in the injection molding section and two preforms are blow-molded in the blow molding section has been described. The number can be changed as appropriate.

Further, in the above embodiment, the case where the cooling means is used as the temperature control means has been described. However, the present invention is not limited to this example, and it is also possible to employ a heating means.

Further, a plurality of air nozzles may be provided, or a porous member, for example, a filter may be provided between the air nozzle and the outer wall of the preform.
In addition, cooling may be performed so that air can be evenly distributed.

In any case, it is important to partially control the temperature of the preform in the standby section immediately before blow molding.

[0104]

[Brief description of the drawings]

FIG. 1 is a plan view showing a container forming apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of a standby unit of FIG.

FIG. 3 is a plan view in which a part of FIG. 2 is omitted.

FIG. 4 is a front view as viewed from a cooling block side in FIG. 2;

FIG. 5 is a partial side view showing another embodiment of the present invention.

FIG. 6 is a plan view seen from the opposite side of FIG. 5;

FIG. 7 is a plan view showing a state in which the conveying member is positioned from the state of FIG. 6 to perform cooling.

8 is a plan view showing a state where the preform is rotated from the state of FIG.

FIG. 9 is a front view of a cooling unit.

[Explanation of symbols]

 28 Preform 34 Conveying means 36 Conveying member 38 Container 42 Heating part 44 Blow molding part 50 Standby part 52 Cooling means 54 Positioning plate 56 Advance / retreat driving means 58a, 58b Cooling block 72 Engaging recess 82 Advance / retreat driving cylinder 94 Positioning means 96 Cooling means 98 rotating means 114 positioning plate 118 air nozzle 132 rack 134 sprocket

Claims (11)

[Claims] 1. A heating section for heating a preform made of synthetic resin to a suitable temperature or higher for blow molding, a blow molding section for blow molding the preform heated by the heating section, the heating section and the blow molding section. Forming a container having a standby unit for holding the preform heated between the heating unit and a conveying unit for holding the preform on a conveying member and conveying the preform from the heating unit to the blow molding unit via the standby unit; The apparatus, wherein the standby unit includes a temperature control unit that performs temperature control on the preform conveyed from the heating unit, a positioning unit that positions the conveyance member, and the temperature control unit and the positioning unit. Reciprocating drive means for individually or integrally driving the preform and the transport member, wherein the positioning means contacts the transport member and positions the transport member Molding apparatus of the container, characterized in Rukoto. 2. The container molding apparatus according to claim 1, wherein the temperature control unit is a cooling unit for cooling the preform. 3. The container molding apparatus according to claim 1, wherein the temperature control unit is a heating unit that heats the preform. 4. The container molding apparatus according to claim 1, wherein the temperature control means is a temperature control member for controlling a temperature by contacting a temperature control surface of the preform. 5. The container forming apparatus according to claim 1, wherein the temperature control means is a temperature control member for controlling the temperature in a non-contact manner with the surface to be controlled of the preform. 6. The circulating transport path according to claim 1, wherein the transport member forms a circulating transport path that is circulated and transported by a transport unit, and the temperature control unit, the positioning unit, and the forward / backward drive unit are disposed outside the circulating transport path. An apparatus for forming a container, comprising: 7. The preform according to claim 1, wherein a surface of the preform located in a direction of transport of the preform is a temperature control surface, and the temperature control unit moves back and forth in a direction intersecting the direction of transport of the preform. An apparatus for forming a container, wherein the apparatus is made movable. 8. The container molding apparatus according to claim 1, wherein the standby unit includes a preform rotating unit that adjusts the orientation of the preform during blow molding in the blow molding unit. 9. The conveying member according to claim 8, wherein the conveying member has a sprocket for rotating when heated by a heating unit, and the preform rotating means is capable of moving a rack meshing with the sprocket of the conveying member. An apparatus for forming a container, comprising: 10. A conveying member holding a preform by a conveying means, wherein when the preform is conveyed from a heating section to a blow molding section, the preform is held by a standby section disposed between the heating section and the blow molding section. A method for forming a container, wherein the container is obtained by blow-molding after adjusting the temperature, wherein the standby unit causes a temperature control unit to stand by at a position outside a transfer region of the preform; Moving the held transport member from the heating section to the standby section, stopping the transport member in the standby section, moving the temperature control means forward to the preform side, and positioning the transport member. Thereafter, a step of adjusting the temperature of the temperature-controlled surface of the preform by a temperature adjusting means for a predetermined time; and, after the temperature adjustment, retreating the temperature adjusting means to a position outside the transport region of the preform. Retreating, moving the preform to the blow molding unit with the conveyance member holding the preform by the conveyance unit, and blow molding the preform with high-pressure air in the blow molding unit. A method for molding a container, comprising: 11. The molding of a container according to claim 10, further comprising, after the step of adjusting the temperature by the temperature adjusting means, a step of rotating the preform in accordance with a direction at the time of blow molding in the blow molding section. Method.