JPH0623830A - Blow molding machine having neck piece inserting device - Google Patents

Abstract

PURPOSE:To provide a blow molding machine capable of inserting a plurality of neck pieces simultaneously into a corresponding plurality of neck cavity dies by arranging at the same intervals as the neck cavity dies stopping at eject station. CONSTITUTION:Neck pieces 30 are fed to an arranging device 70 through a hopper 60 and a feeder 62. The eight neck pieces 30 are arranged at the same intervals as neck cavity dies 20 on the arranging line 72 of the arranging device 70. These neck pieces 30 are held by a delivery chuck mechanism 110 in a first delivery position 100 and then transferred through a lowering transfer line 104 to a second delivery position 106. A supply chick mechanism 140 receives the eight insert pieces in the second delivery position 106 and after the ejection action at eject station 16 completes the insertion of the insert pieces 30 in a third delivery position 184 below the neck cavity die 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding machine for blow molding a hollow body such as a bottle having an insert device for inserting a neck piece into a neck cavity mold.

[0002]

2. Description of the Related Art For example, polyethylene terephthalate (P
BACKGROUND ART Beverage bottles obtained by biaxially stretch blow molding a preform injection-molded by ET) or the like are widely used. This type of bottle has high heat resistance and mechanical strength because its barrel is biaxially oriented, but the neck on the open end side is not biaxially oriented, so it is inferior in terms of heat resistance and mechanical strength. There is. Therefore, a piece corresponding to the neck portion of the bottle is injection-molded with a resin material different from that of the bottle body, for example, polycarbonate (PC) or a mixed material of PET and PET, and this piece is inserted into the neck cavity mold to be bottled. An insert molding technique for molding a resin is disclosed in JP-A-4-97822 and JP-A-4-97822.
It is disclosed in Japanese Patent No. 10591. Further, the applicant of the present application has adopted a technique in which a PET resin, which is a material similar to that of the body, is used as a molding resin material for the piece, which is heated and then slowly cooled to be whitened and crystallized.
/ JP 91/01287. Further, according to these proposals, it is disclosed that this piece is carried out at the eject station after the bottle ejecting process is completed.

[0003]

Generally, in an apparatus having a one-stage molding machine such as an injection molding station, a temperature control station, a blow molding station and an eject station, a neck cavity mold is circulated and conveyed to each station. It realizes the molding cycle of. At this time, the transfer timing of the neck cavity mold is determined according to the molding cycle in the injection molding station which requires the most processing time. And, in the eject station, since it is only the operation of ejecting the bottle whose neck part is held in the neck cavity mold, the processing time is the shortest, and it is possible to insert the piece into the neck cavity mold at this eject station. It is preferable in that the cycle time is not increased.

By the way, in this type of one-stage molding apparatus, in order to increase the number of bottles to be molded per cycle, a plurality of neck cavity molds are circulated and conveyed to each station as one set. Therefore, even when inserting the piece into the neck cavity mold,
Within the time allowed for the neck cavity mold to stop at the eject station, as many pieces as the neck cavity mold must be inserted. Further, if the pieces are not inserted into proper positions in the plurality of neck cavity molds, molding defects will occur in the preform injection molding process.

Therefore, it is an object of the present invention to accurately insert the same number of neck pieces as the neck cavity molds within the allowed time when the plurality of neck cavity molds are stopped at the eject station. It is to provide a blow molding machine having a neck piece insert device.

[0006]

The present invention uses a plurality of neck cavity molds into which a plurality of neck pieces are respectively inserted, and a plurality of injection cavity molds and injection core molds. Injection molding station for injection molding a plurality of materialized preforms, the preform holding heat during injection molding is conveyed by the neck cavity mold and placed in the blow cavity mold, and a drawing rod and blow air are used. Blow molding station for biaxially stretch blow molding into a hollow body, an eject station for ejecting the conveyed hollow body by opening drive of the neck cavity mold, and a plurality of neck cavity molds stopped by the eject station. The same number of neck pieces with the same pitch as the arrangement pitch Prealigning supporting, and having an insert device for inserting a plurality of neck piece in the open driven in a plurality of said neck cavity mold.

[0007]

According to the present invention, the insert device preliminarily aligns and supports the same number of neck pieces at the same pitch as the arrangement pitch of the plurality of neck cavity molds stopped at the eject station. Then, the ejecting operation is completed at the ejecting station, and the plurality of neck pieces that are aligned and supported in advance are simultaneously inserted into the plurality of neck cavity molds that are maintained in the released state.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a biaxial stretch blow molding device to which the present invention is applied will be specifically described below with reference to the drawings.

FIG. 2 is a plan view of the embodiment apparatus, in which an upper base 4 is fixed at an upper position facing the base 2. The upper base 4 supports a turntable 6 which is driven to rotate intermittently every 90 °. At four positions of the turntable 6, there are arranged holding plates 8 supporting a plurality of, for example, eight neck cavity molds 20 described later.

Below the turntable 6, there are four injection molding stations 10, facing the holding plate 8, respectively.
A temperature control station 12, a blow molding station 14, and an eject station 16 are provided. Then, the insert device 1 having the characteristic structure of this embodiment
8 is arranged on the side of the eject station 16.

FIG. 3 shows a mold clamping state of the mold in the injection molding station 10. In the figure, the neck cavity mold 20 defines the outer wall of the neck portion of the preform 32, the injection cavity mold 22 defines the outer walls of the body and bottom of the preform 32, and the injection core mold 24 represents The inner wall of the preform 32 is defined. In this embodiment, the neck cavity mold 20
After inserting the neck piece 30 into the mold, the mold clamping state is set. The neck piece 30 has, for example, a hollow cylindrical shape having a thread forming portion 30a, a locking ring 30b, and a support ring 30c. And
By filling the cavity 26 with a resin material such as polyethylene terephthalate (PET), the neck piece 3
0 is injection-molded with the preform 32 integrated with the neck portion.

After the mold opening drive at the injection molding station 10, the neck portion of the preform 32 is held by the neck cavity mold 20. The neck cavity mold 20 is used as a conveying means for the preform 32, and conveys the preform 32 as the rotary disk 6 is driven. In the temperature control station 12, the temperature of the injection-molded preform is adjusted to an appropriate temperature for stretching, if necessary, and then the blow molding station 14 uses blow air and a stretching rod to biaxially stretch-blow mold the bottle 34 from the preform 32. Will be done.

FIG. 4 shows an eject operation in the eject station 16. The upper base 4 facing the eject station 16 is provided with a driving means (not shown) for driving the neck cavity mold 20 composed of a split mold to open, and an air cylinder 42 for driving the eject rod 40. ing. Eject rod 40
Is inserted inside the bottle 34 and the neck cavity mold 20
When the two are opened, they are prevented from moving in close contact with one of the split molds, thereby ensuring the free fall associated with the eject operation. A shooter 44 is arranged on the base 2 facing the eject station 16 and discharges the bottle 34 ejected from the neck cavity mold 20 to the side of the apparatus. At the outlet 44a of the shooter 44, a conveyor 46 that conveys the bottle 34 is arranged along the side wall of the apparatus body. Conveyor 46
The upper bottle 34 will be conveyed toward the unloader 48 as shown in FIG. In this embodiment, the shooter 4
4, the conveyor 46 and the unloader 48 constitute a non-defective product discharge route 50. A guide plate 52 is provided in a part of the area along the forming path of the conveyor 46. The guide plate 52 can be moved by a hinge 54 from a vertical state shown by a solid line in FIG. 4 to a horizontal state shown by a chain line.
Before eject driving the bottle 34 at the eject station 16, the guide plate 52 is tilted horizontally to be driven, so that the ejected bottle 34 is moved toward the front side of the device from the conveyor 46 with the force of dropping the shooter 44. Will be discharged. This discharge route is referred to as a defective product discharge route 56. Note that FIG. 12 shows the control system of the apparatus of this embodiment, and the guide plate 53 is opened and closed by the guide plate drive unit 260 in response to a command from the CPU 200.

Next, the insert device 18 will be described with reference to FIGS. 1, 2 and 6 to 12.

1 and 2, a large number of injection-molded neck pieces 30 are put in the hopper 60. A feeder 62 is connected to the hopper 60. The feeder 62 includes a ball feeder 64 that supplies the neck piece 30 along a circumferential path, and a linear feeder 66 that is connected to the ball feeder 64 and that conveys the neck piece 30 in a line. A first sensor 68a is provided on the entrance side of the linear feeder 66, and photoelectrically detects whether or not the neck piece 30 is full in the linear feeder 66. In addition, as shown in FIG. 6, a second sensor 68b is provided near the exit of the straight feeder 66. The feeder 62 is shown in FIG.
It is driven by a feeder drive unit 210 shown in FIG.

An aligning device 70 is fixedly provided on the upper base 4, for example, at a lateral position facing the eject station 16. This aligning device 70 is a C shown in FIG.
The neck pieces 30 which are driven by the alignment drive unit 220 which receives a command from the PU 200 and are conveyed in a single line by the linear feeder 66 are arranged on the alignment line 72 at a predetermined pitch P.
Arrange the required number with. A push rod 76 driven forward and backward by an air cylinder 74 to position one neck piece 30 at a position P0 on the extension line of the alignment line 72.
Is provided. The push rod 76 is driven after detecting the neck piece 30 by the second sensor 68b, and drives and drives one neck piece 30 to the position P0. A third sensor 68c for detecting whether or not the neck piece 30 is present at this position P0 is provided.

In this embodiment, the holding plate 8 is provided with eight neck cavity molds 20, and the eight neck pieces 30 are aligned at the respective positions P1 to P8 on the alignment line 72 in the alignment device 70. There is. The pitch P between the adjacent positions matches the arrangement pitch of the neck cavity molds 20 supported by the holding plate 8.

As shown in FIG. 6, a fixed guide 80 and a movable guide 82 are provided in parallel with the alignment line 72. The movable guide 82 can be moved up and down, and the alignment line 72
When the eight neck pieces 30 are aligned above, they are stopped at the upper limit position.

As shown in FIG. 7, a slit 84 is provided along the center line of the alignment line 72 between the fixed guide 80 and the movable guide 82, and an alignment conveyance section 86 is disposed below the slit 84. There is. This aligning and conveying section 86 is
As shown in FIG. 7, eight pins 88 to be inserted into the hollow portion of the neck piece 30 are vertically provided upright. As a method of driving the aligning and conveying section 82, first, the presence of the neck piece 30 at the position P0 is confirmed by the second sensor 68b.
Then, the pin 88 is moved to the lower position corresponding to the positions P0 to P7.
After arranging, the pin 88 is driven to rise in the direction of arrow a shown in FIG. As a result, the pin 88 is inserted into the hollow portion of the neck piece 30. Next, the alignment conveyance unit 86 is step-fed by the pitch P in the direction of arrow b in FIG. As a result, the neck piece 30 on the alignment line 72 has a pitch P.
It will be driven forward by the amount. After that, the alignment conveyance unit 86 is driven downward in the direction of arrow c, and is further driven in the direction of arrow d by the pitch P, whereby the initial position can be reset. By repeating this driving, eight neck pieces 30 can be arranged on the alignment line 72 at a pitch P. The end of the alignment line 72,
That is, the position P8 is provided with a fourth sensor 78 for detecting whether or not the neck piece 30 is present at this position (see FIG. 6).

A pusher 90 is provided for driving the eight neck pieces 30 aligned on the alignment line 72 forward toward the first delivery position 100. The pusher 90 has a push rod 92 at a position facing each of the positions P1 to P8. The tip of the push rod 92 is configured as a positioning guide portion 94 having two inclined surfaces. Therefore, by moving the push rod 92 forward after retracting the movable guide 82 downward, the eight neck pieces 30 centered by the positioning guide portion 94 are moved toward the first delivery position 100. You can It should be noted that, with the movable guide 82 stopped at the upper limit position, the push rod 92 is driven forward by a predetermined stroke to center the eight neck pieces 30, and then the movable guide 82 is driven downward to drive the first neck piece 30. The neck piece 30 may be conveyed toward the delivery position 100. Further, the neck piece 30 is provided in the transport path 102 between the alignment line 72 and the first delivery position 100.
It is also possible to provide a guide (not shown) for moving the vehicle straight.

The eight neck pieces 30 arranged on the first delivery position 100 are chucked by the delivery chuck mechanism 110, moved on the descending conveyance line 104, and then driven down to the second delivery position 106. Be transported to. This delivery chuck mechanism 110 is C shown in FIG.
It is driven by a delivery chuck driving unit 230 that receives a command from the PU 200, and as shown in FIG. 8, for example, is fixed to an elevating plate 114 that can move up and down along a slide rail 112 fixed to the upper base 4.

An advancing / retreating plate 118 is provided on the elevating plate 114, and a delivery chuck 120 is supported on the advancing / retreating plate 118. The advancing / retreating plate 118 can move the delivery chuck 120 between the first delivery position 100 and the descending conveyance line 104 by driving the air cylinder 116. A guide plate 119 is provided at the lower end of the advancing / retreating plate 118, and the delivery chuck 120 is the first
When it is set to the delivery position 100, it can contact the eight neck pieces 30 arranged on the position 100 and correct the positional deviation of the neck piece 30.

As shown in FIGS. 8 and 9, the delivery chuck 1
Reference numeral 20 has first and second chuck pieces 122 and 124 which are supported by a forward and backward plate 118 by a pin 126 so as to be openable and closable. A coil spring 128 is stretched between the first and second chuck pieces 122 and 124, and is normally set in a closed state by the urging force of the spring 128. When the first and second chuck pieces 122 and 124 are set to the closed state, the lower ends of the chuck pieces 122 and 124 are inserted between the locking ring 30b and the support ring 30c of the neck piece 30, and the neck piece Thirty
Can be supported. The first and second chuck pieces 122,
A drive plate 132 for driving the opening of 124 is provided. This drive plate 132 is the air cylinder 1
It can be raised and lowered by driving 30. This drive plate 1
32 has a protrusion 134 at an upper position facing the eight delivery chucks 120, and the drive plate 132 is driven downward to cause the protrusion 134 to move to the first and second chuck pieces 12.
The upper surface of 2,124 will be pressed. Then,
As shown by the chain line in FIG. 9, the first and second chuck pieces 122, 124 are driven to open against the biasing force of the coil spring 128, and the neck piece 30 can be detached.

Delivery chuck mechanism 11 having the above structure
0 chucks the eight neck pieces 30 arranged on the first delivery position 100 with each delivery chuck 120, then horizontally conveys to the position of the descending conveyance line 104, and then descends along the slide rail 112. Transport. A second transfer position 106 is provided at the lower end position of the descending conveyance line 104.

As shown in FIG. 1, the descending conveyance line 104
The neck piece 30 is lowered to the side position of the carrier line 10
4 is provided with a discharge shooter 136. The discharge shooter 136 is movable in the horizontal direction, and when the fourth detection sensor 78 detects by the CPU that the eighth neck piece 30 has not reached the position P8 within a predetermined time, Discharge shooter drive unit 2
It is horizontally driven by 40 to the position of the descending conveyance line 104. In this case, the delivery chuck mechanism 110 is not driven downward along the descending conveyance line 104, and the first and second chuck pieces 122 and 124 are opened while waiting at a position above the entrance of the discharge shooter 136. To drive.
As a result, the neck piece 30 supported by the first and second chuck pieces 122 and 124 is changed to the discharge shooter 136.
Neck pieces 3 that have been exhausted at
0 is prevented from being inserted into the neck cavity mold 20. Further, if the neck pieces are aligned and conveyed until the required number is reached, the neck pieces 30 cannot be inserted at the timing synchronized with the molding cycle. Therefore, a certain number of the neck pieces 30 can be inserted within a predetermined time in time for the molding cycle. If they cannot be transported, they are uniformly excluded from the supply route.

A feed chuck mechanism 140 for receiving the eight neck pieces 30 at the second delivery position 106 and inserting the neck pieces 30 into the eight neck cavity molds 20 stopped on the eject station 16.
Is provided. This supply chuck mechanism 140 is C
It is driven by the supply chuck drive unit 250 which receives a command from the PU 200. As shown in FIGS. 10 and 11, this supply chuck mechanism 140 has a plurality of drive arms 142 that are horizontally and vertically driven.
The fixing plate 144 is fixed to the tip position of the. Above the fixed plate 144, eight support plates 146 are arranged in parallel with the fixed plate 144. Support plate 146
Fixes the upper end of a rod 148 extending vertically downward. The fixed plate 144 has a first guide portion 144a that guides the rod 148 in the vertical direction. A flange-shaped stopper 148a is provided on the lower end side of the rod 148 protruding downward from the guide portion 144a. Then, the fixed plate 144 and the support plate 14
A compression coil spring 150 inserted through the rod 148 is provided between the compression coil spring 150 and the pressure sensor 6. Therefore, the distance between the fixed plate 144 and the support plate 146 is maintained by the urging force of the compression coil spring 150 while the stopper 148a is always in contact with the lower surface of the guide portion 144a.

On the lower surface of the support plate 146, the support shaft 15
First and second chuck levers 15 that can be opened and closed by 6
2, 154 are provided. The support plate 14 is attached to one end of each of the first and second chuck levers 152 and 154.
Chuck piece 16 protruding upward from the hole provided in 6
0,160 are provided. At the other end of the first and second chuck levers 152 and 154, a rotatable roller 15 is provided.
8, 158 are supported. The first and second chuck levers 152 and 154 are pressed by a pressure contact coil spring 159 that is in contact with a position between the support shaft 156 and the roller 158, and the roller 158, which is normally located outside the support shaft 156, The movement is urged so as to reduce the distance between the opposing members 158. Therefore, the chuck pieces 160, 1
It is urged to move in a direction in which the facing distance of 60 is expanded.
Therefore, when the pair of chuck pieces 160, 160 are inserted into the hollow portion of the neck piece 30, the pair of chuck pieces 160, 160 are urged by the coil spring 159.
Is pressed against the inner wall of the piece, and the neck piece 30 can be chucked.

The neck piece 30 is attached to the pair of chuck pieces 16.
In order to disengage it from 0,160, it is sufficient to drive so as to increase the distance between the rollers 158,158 of the first and second chuck levers 152,154. For this purpose, a chuck release driving mechanism 170 is provided. The chuck release driving mechanism 170 moves the wedge-shaped member 178 forward and backward between the rollers 158 and 158 to advance and retract the plate 174.
Have. The advancing / retreating plate 174 has a guide shaft 172.
Is fixed, and the guide shaft 172 is fixed to the fixed plate 14
It is movably supported in the horizontal direction by a second guide portion 144b provided at the position 4. Furthermore, the reciprocating plate 174
An air cylinder 176 is provided in the air cylinder 176, and the advancing / retreating plate 174 is moved forward / backward by driving the air cylinder 176. The first chuck lever 152 has an extension portion 1 extending further ahead of the formation position of the chuck piece 160.
It has 62. A proximity switch 164 that can detect the position of the extension 162 is arranged. As a result, when the neck piece 30 is chucked by the pair of chuck pieces 160, 160, the extension 162 is stopped at a predetermined position. Therefore, the neck switch 30 is detected by the proximity switch 164. It can detect whether or not it is chucked. On the other hand, when the neck piece 30 does not exist, the extension 162 is set to a position deviated from the above predetermined position by the biasing force of the coil spring 159, so that the non-chuck state of the neck piece 30 can be detected. .

Next, a method of inserting the neck piece 30 using the supply chuck mechanism 140 will be described.

By the delivery chuck mechanism 110, after the neck piece 30 reaches the second delivery position 106 which is the lower limit position of the descending conveyance line 104, the supply chuck mechanism 14 is provided.
The drive arm 142 of 0 is driven upward. As a result, the support plate 146 comes into contact with the lower surfaces of the eight neck pieces 30. At this time, after the support plate 146 reaches the lower surface of the neck piece 30, the drive arm 142 is overdriven upward, whereby the coil Spring 1
The contraction of 50 causes the support plate 146 to closely contact the lower surface of the neck piece 30. This drive arm 1
When the 42 is driven upward, the chuck release driving mechanism 170
As a result, the distance between the pair of chuck pieces 160, 160 facing each other is narrowed. Therefore, when the support plate 146 reaches the lower surface of the neck piece 30, the pair of chuck pieces 160, 160 is inserted into the hollow portion of the neck piece 30. Then, the chuck release driving mechanism 170
The advancing / retreating plate 174 is driven backward by driving the air cylinder 176. Then, the wedge-shaped member 178 is separated from between the rollers 158, 158, and the pair of chuck pieces 16
This means that the facing distance of 0,160 is increased. Therefore, the inner wall of the hollow portion of the neck piece 30 can be pressed and supported by the pair of chuck pieces 160, 160.
After this, the first and second chuck pieces 122 and 124 of the delivery chuck mechanism 110 are driven to open, and the neck piece 3
Let go from 0. By this operation, the neck piece 30
Is a supply chuck mechanism 140 from the delivery chuck mechanism 110.
Will be handed over to.

After this, the drive arm 142 is driven to descend, and the neck piece 30 is set to the first lower position 180 below the second delivery position 106. In the supply chuck mechanism 140, while the neck piece 30 is supported by the pair of chuck pieces 160, 160, the neck piece 30 is stopped at the second delivery position 106 or the first lower position 180. , Waiting until the eject operation of the bottle 34 at the eject station 16 is completed. The eject operation at the eject station 16 is a neck cavity mold 2 composed of a split mold.
0 is driven open, and the push rod 92 maintains the center position of the bottle 34 to allow it to fall freely. By both of these operations, the neck portion of the bottle 34 is separated from the neck cavity mold 20, and is discharged to the non-defective product discharge route 50 or the defective product discharge route 56 via the shooter 44. In addition, based on the detection by the fourth sensor 78, when the neck piece 30 is discharged through the discharge shooter 136, the bottle 34 molded without the neck piece 30 being inserted is replaced with the guide plate 52.
Is selectively driven to discharge defective products to the defective product discharge route 56.

In the eject station 16, after the above eject operation is completed, the push rod 92 is driven to retract upward, and the neck cavity mold 20 constituted by the split mold is maintained in the released state. When the eject operation in the eject station 16 is completed, the drive arm 142 in the supply chuck mechanism 140 is driven forward,
The neck piece 30 is moved from the first lower position 180 to a second lower position 182 below the eight neck cavity molds 20. Further, the drive arm 142 is driven to rise, the support plate 146 of the supply chuck mechanism 140 reaches the lower surface of the neck cavity mold 20, and the coil spring 150 is overdriven until it is compressed. As a result, the support plate 146
Closely contacts the lower surface of the neck cavity mold 20 to achieve precise positioning in the height direction. After that, the neck cavity mold 20 composed of a pair of split molds is driven to be closed and the pair of chuck pieces 160 of the supply chuck mechanism 140 is driven to be separated, so that the neck piece 30 is moved to the third position 184. Is transferred from the supply chuck mechanism 140 to the neck cavity mold 20, and the neck cavity mold 2
Insertion into 0 will be completed. The supply chuck mechanism 140 from which the neck piece 30 has been detached is stopped at the retracted position by following the route opposite to the above driving.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, the present invention can be applied to a device of three stations which does not have the temperature control station 12 in the above-mentioned embodiment, and the point is to use a blow molding machine of three stations or more having independent eject stations.

[0034]

As described above, according to the present invention, the same number of neck pieces can be simultaneously inserted at the same pitch as the arrangement pitch of a plurality of neck cavity molds stopped at the eject station.

[Brief description of drawings]

FIG. 1 is a side view of an eject station and an insert device of a molding machine to which the present invention is applied.

FIG. 2 is a plan view of an example device.

FIG. 3 is a cross-sectional view of a mold clamping state of the injection molding station shown in FIG.

FIG. 4 is a schematic explanatory diagram for explaining an eject operation in the eject station shown in FIG.

FIG. 5 is a schematic explanatory view showing a bottle carrying section in the eject station.

FIG. 6 is a schematic plan view of an alignment unit in the insert device.

FIG. 7 is a schematic explanatory diagram of a step transporting unit for insert pieces in the aligning unit.

FIG. 8 is a schematic side view of a delivery chuck mechanism in the insert device.

9 is a schematic explanatory view showing a chuck portion of the delivery chuck mechanism shown in FIG.

FIG. 10 is a schematic plan view of a supply chuck mechanism in the insert device.

FIG. 11 is a schematic explanatory view showing a state in which a neck piece is inserted into a neck cavity mold using a supply chuck mechanism.

FIG. 12 is a block diagram of a control system of the embodiment apparatus.

[Explanation of symbols]

 10 injection molding station 14 blow molding station 16 eject station 18 insert device 20 neck cavity type 30 neck piece 50 good product discharge route 56 defective product discharge route 60 hopper 62 feeder 70 alignment device 78 fourth sensor 86 alignment transport unit 110 delivery chuck mechanism 120 Delivery chuck 136 Discharge shooter 140 Supply chuck mechanism 144 Fixed plate 146 Support plate

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65D 1/02 A 7445-3E 23/00 B 8111-3E // B29K 105: 20 B29L 22:00 4F (72) Inventor Fumiya Amari 3-4586 Ko, Komoro-shi, Nagano Nissei ASB Machinery Co., Ltd.

Claims (4)

[Claims] 1. A plurality of preforms in which the insert pieces are integrated into a neck portion are formed by using a plurality of neck cavity molds into which a plurality of neck pieces are respectively inserted, and a plurality of injection cavity molds and injection core molds. An injection molding station for injection molding and the preform that retains heat during injection molding are conveyed by the neck cavity mold and placed in the blow cavity mold, and biaxially stretched blown into a hollow body using a stretch rod and blow air. The blow molding station for molding, the ejecting station for ejecting the conveyed hollow body by the opening drive of the neck cavity mold, and the same number as the arrangement pitch of the plurality of neck cavity molds stopped at the eject station. Pre-align and support the neck pieces of the An insert device for inserting a plurality of neck pieces into the plurality of moved neck cavity molds, and a blow molding machine having a neck piece insert device. 2. The insert device according to claim 1, wherein the feeder that conveys the neck pieces and the required number of the neck pieces conveyed by the feeder are arranged at the same pitch as the arrangement pitch of the plurality of neck cavity molds. An aligning unit, and a supply chuck unit that chucks the aligned neck pieces and supplies them into the plurality of neck cavity molds that are open-driven at the eject station.
The blow molding machine having a neck piece insert device, wherein the supply chuck section chucks a necessary number of neck pieces and waits before performing an eject at the eject station. 3. The drive control unit for controlling the driving of the aligning unit and the supply chuck unit at a timing synchronized with a molding cycle time, and the driving control unit arranged in the middle of the transfer of the neck piece according to claim 2, A sensor that detects whether or not the neck piece can be supplied to the neck cavity mold of the eject station within a predetermined timing in time, and the drive control unit has a time-out based on a signal from the sensor. A blow molding machine having a neck piece insert device, wherein the neck piece is removed from the transfer path when is detected. 4. The ejection station according to claim 3, wherein the eject station includes a non-defective product discharge route for discharging a hollow body having a neck piece insert-molded therein and a defective product discharge route for discharging a hollow body having a neck piece not insert-molded therein. Wherein the drive control unit performs drive control to guide the hollow body formed by removing the neck piece from the transfer path without inserting the neck piece to the defective product discharge route. Blow molding machine having a neck piece insert device for