Injection blow molding machine

Abstract

The present invention provides an injection molding machine that can prevent damage to fixed and rotating members caused by the final molded product being trapped between them. [Solution] An injection blow molding machine comprising: a fixed member fixed to a frame; a movable member movable relative to the fixed member; a rotating member positioned between the fixed member and the movable member, which, after molding a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after molding a final molded product together with the movable member, rotates to face the fixed member; and a detection means attached to the fixed member, the rotating member, or the frame, for detecting whether or not a final molded product exists between the fixed member and the rotating member.

Description

Technical Field

[0001] The present invention relates to an injection blow molding machine.

Background Art

[0002] For example, the device described in Patent Document 1 includes an injection unit, an injection mold unit, a take-out unit, a transfer unit, a temperature control transfer unit, a delivery unit, a blow molding transfer unit, a blow molding mold unit, and a container take-out unit. Further, the device described in Patent Document 1 includes a control unit that controls the one-cycle operation of each operation unit according to a normal operation program and an end program that stops the device when an abnormality is detected, and an abnormality detection sensor is further provided for each operation unit. When an abnormality is detected, the control unit sequentially stops and controls each operation unit after the temperature control transfer unit every time the processing operation of the remaining preforms ends.

[0003] For example, the injection blow molding machine described in Patent Document 2 includes a fixed platen fixed to a support frame, a movable platen slidably attached to a guide member on the support frame, and an intermediate mold support frame slidably attached to the guide member between the fixed platen and the movable platen. The injection blow molding machine described in Patent Document 2 is a device that performs a step of molding a preform as an intermediate molded product in a test tube shape by injection molding and a step of molding the preform into a final molded product by blow molding, that is, blow molding. In the injection blow molding machine described in Patent Document 2, injection molding is performed at an injection station between the fixed platen and the intermediate mold support frame, and blow molding is performed at a blow station between the movable platen and the intermediate mold support frame.

[0004] The intermediate mold support frame for an injection blow molding machine described in Patent Document 2 has a roughly gate-like shape, with its lower end slidably attached to a guide member, and comprises left and right legs extending vertically and a top plate extending laterally that connects the upper ends of the legs. The core mold frame is disposed between the left and right legs. The core mold frame is fixed to a cylindrical support column that is attached through the left and right legs. In other words, the core mold frame is non-rotatably attached to the intermediate mold support frame. Rotating frames, which serve as gripping frames, are rotatably attached to the left and right outer sides of the intermediate mold support frame on the support column. Cylindrical guide bars extending forward and backward are attached to the front and rear sides of the rotating frames. A gripping frame, which supports a molded product gripping device for gripping the outer circumference of the mouth of a preform as an intermediate molded product, is slidably attached in the axial direction of the guide bar and is lockable and unlockable at the tip of the guide bar. A molded product gripping device is attached to the gripping frame. The molded product gripping device has a screw-type split mold as a mouth-type split mold, and a slide plate to which the screw-type split mold is attached.

[0005] In the injection station, each male mold section enters each female mold section attached to the fixed mold. The split screw mold, with its halves joined together, is fitted into the vicinity of the entrance of the female mold section and sandwiched between the female mold section and the injection core mold. As a result, a cavity is formed between the inner surfaces of the female mold section and the split screw mold and the outer surface of the male mold section, and resin is filled into this cavity to form a preform.

[0006] Furthermore, at the blowing station, the screw-type split mold, which is gripping the preform, is pressed against the opening of the blow-molding female mold. As a result, the flange portion of the preform is pressed against the outer surface of the opening of the blow-molding female mold, and the portion beyond the flange enters the inside of the blow-molding female mold. In this state, high-pressure air is blown into the inside of the preform, causing it to expand and press against the inner surface of the blow-molding female mold. This makes it possible to form a bottle-shaped or cascading final molded product that has the shape of the inner surface of the blow-molding female mold. The final molded product will fall out naturally when the screw-type split mold is separated and the grip on the mouth of the final molded product is released.

[0007] An electric motor is attached to one leg of the intermediate support frame as a drive source for rotating the rotating frame. By operating the electric motor, the rotating frame rotates around the support column. As a result, the gripping frame in which the screw split mold grips the preform moves from the injection station to the blowing station, and the other gripping frame moves from the blowing station to the injection station. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Publication No. 2000-127236 [Patent Document 2] Patent No. 4283181 [Overview of the project] [Problems that the invention aims to solve]

[0009] In the injection molding machine described in Patent Document 2, the gripping frame holding the preform with the screw split mold moves from the injection station to the blowing station, and the other gripping frame moves from the blowing station to the injection station. Therefore, if the screw split mold continues to grip the final molded product at the blowing station, the final molded product moves from the blowing station to the injection station together with the gripping frame. Then, when the intermediate mold support frame moves toward the fixed mold in order to perform injection molding at the injection station, the final molded product can get caught between a fixed member such as a female mold attached to the fixed mold and a rotating member such as a screw split mold. As a result, there is a risk that the fixed member or rotating member may be damaged. The present invention aims to provide an injection molding machine that can prevent damage to fixed members and rotating members caused by the final molded product being caught between them. [Means for solving the problem]

[0010] The present invention, completed with this objective in mind, is an injection blow molding machine comprising: a fixed member fixed to a frame; a movable member movable relative to the fixed member; a rotating member positioned between the fixed member and the movable member, which, after molding a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after molding a final molded product together with the movable member, rotates to face the fixed member; and a detection means attached to the fixed member, the rotating member, or the frame, for detecting whether or not the final molded product exists between the fixed member and the rotating member. Here, the detection means may be attached to the upper part of the fixing member. Alternatively, the preforms and the final molded products may be molded in a vertical arrangement, and the detection means may detect along the vertical direction. Furthermore, the detection means may be a laser sensor that emits a laser downwards, or an ultrasonic sensor that transmits ultrasonic waves downwards. From another perspective, the present invention is an injection blow molding machine comprising: a fixed member fixed to a frame; a movable member movable relative to the fixed member; a rotating member positioned between the fixed member and the movable member, which, after molding a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after molding a final molded product together with the movable member, rotates to face the fixed member; and a detection means attached to the movable member or the rotating member for detecting whether or not a final molded product exists between the movable member and the rotating member. Here, the detection means may be attached to the upper part of the movable member. Furthermore, the detection means may include a camera that captures images between the movable member and the rotating member. Alternatively, the preforms and the final molded products may be molded in a vertical arrangement, and the detection means may detect along the vertical direction. Furthermore, the detection means may be an ultrasonic sensor that transmits ultrasonic waves downwards, or a laser sensor that projects a laser downwards. Furthermore, from another perspective, the present invention is an injection blow molding machine comprising: a fixed member fixed to a frame; a movable member movable relative to the fixed member; and a rotating member positioned between the fixed member and the movable member, which, after molding a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after molding a final molded product together with the movable member, rotates to face the fixed member; wherein the machine molds a plurality of preforms and final molded products in a vertical arrangement, and also molds a plurality of preforms and final molded products in an orthogonal direction perpendicular to the direction of movement of the movable member relative to the fixed member and the vertical arrangement, and is equipped with detection means for detecting along the direction in which the number is greater, which of the number of arrangements in the vertical direction or the number of arrangements in the orthogonal direction. Here, the number of arrangements in the vertical direction is greater than the number of arrangements in the orthogonal direction, and the detection means may be an ultrasonic sensor that transmits ultrasonic waves downwards, or a laser sensor that irradiates a laser downwards. Further, the detection means may be attached to at least one of the upper part of the fixed member and the upper part of the movable member.

Advantages of the Invention

[0011] According to the present invention, it is possible to suppress damage to the fixed member and the rotating member caused by the final molded product being sandwiched between the fixed member and the rotating member.

Brief Description of the Drawings

[0012] [Figure 1] It is a view of an example of a cross section of an injection blow molding machine according to the first embodiment seen in the vertical direction. [Figure 2] It is a view of an example of a cross section of an injection blow molding machine according to the first embodiment seen in the second direction. [Figure 3] (a) is a view showing an example of a cross section before molding the final molded product. (b) is a view showing an example of a cross section after molding the final molded product. [Figure 4] It is an example of a view of the injection blow molding machine seen in the direction of part IV of FIG. 2. [Figure 5] It is an example of a view when the sensor detects that there is a final molded product between the cavity plate and the intermediate mold. [Figure 6] It is an example of a view of the injection blow molding machine according to the second embodiment seen in the direction of part VI of FIG. 2. [Figure 7] It is an example of a view when the sensor detects that there is a final molded product between the movable mold and the intermediate mold. [Figure 8] It is an example of a view showing a modified example of the sensor. [Figure 9] It is an example of a view of the injection blow molding machine according to the third embodiment seen in the direction of part VI of FIG. 2. [Figure 10] It is an example of a view when the sensor detects that there is a final molded product between the driving side movable part and the driven side movable part.

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. <First Embodiment> FIG. 1 is a view showing an example of a cross-section of an injection blow molding machine 1 according to the first embodiment as viewed in the vertical direction. FIG. 2 is a view showing an example of a cross-section of an injection blow molding machine 1 according to the first embodiment as viewed in the second direction. FIG. 3(a) is a view showing an example of a cross-section before forming the final molded product 600. FIG. 3(b) is a view showing an example of a cross-section after forming the final molded product 600. Note that FIGS. 1 and 2 show a state in which the fixed mold 10 and the injection core mold 51 are opened. Further, FIGS. 1, 2, and 3(b) show a state in which the driving-side movable part 22a and the driven-side movable part 22b of the movable blow split mold 22 are opened, and the movable blow split mold 22 and the blow guide 52 are opened.

[0014] The injection blow molding machine 1 is a device that performs injection molding (in other words, injection molding) and blow molding (in other words, blow molding). The injection blow molding machine 1 forms, for example, a test tube-shaped preform 610, which is an intermediate molded product, by injection molding, and forms a final molded product 600 such as a container by blowing high-pressure air into the inside of the preform 610 and expanding it by blow molding.

[0015] The injection molding machine 1 comprises a fixed mold 10, a movable mold 20 that is movable relative to the fixed mold 10, and an intermediate mold 30 positioned between the fixed mold 10 and the movable mold 20. The injection molding machine 1 performs injection molding at the injection station between the fixed mold 10 and the intermediate mold 30 by closing the molds of the fixed mold 10 and the intermediate mold 30. The injection molding machine 1 also performs blow molding at the blow station between the intermediate mold 30 and the movable mold 20 by closing the molds of the intermediate mold 30 and the movable mold 20. Hereafter, the direction of movement of the movable mold 20 relative to the fixed mold 10 (in other words, the left and right directions in Figures 1 and 2) may be referred to as the "first direction." In the first direction, the side on which the fixed mold 10 is positioned may be referred to as the "first side," and the side on which the movable mold 20 is positioned may be referred to as the "second side." The injection molding machine 1 is positioned such that the up and down direction in Figure 2 is the top and bottom direction. In the following, the vertical direction in Figure 2 may be simply referred to as the "vertical direction." Furthermore, the direction perpendicular to the first direction and the vertical direction (in other words, the vertical direction in Figure 1) may be referred to as the "second direction."

[0016] The injection molding machine 1 includes a fixed platen 11 fixed to a frame 500 fixed to the floor and holding a fixed mold 10, and a movable platen 21 slidably mounted on a guide member 510 on the frame 500 and holding a movable mold 20. The injection molding machine 1 also includes an intermediate mold support frame 31 slidably mounted on the guide member 510 between the fixed platen 11 and the movable platen 21 and supporting an intermediate mold 30.

[0017] Furthermore, the injection molding machine 1 includes an injection device (not shown) on the side opposite to the fixed mold 10 relative to the fixed platen 11, which injects resin into a cavity formed between the fixed mold 10 and the intermediate mold 30. Furthermore, the injection molding machine 1 is equipped with a clamping device (not shown) on the side of the movable platen 21 opposite to the movable mold 20. The clamping device has a clamping cylinder device (not shown) for driving the movable platen 21 and a support plate (not shown) to which the clamping cylinder device is attached. The support plate and the fixed platen 11 are connected by a plurality (e.g., four) tie bars 520. The fixed platen 11 is fixed to the frame 500 by bolts or the like. The movable platen 21 and the intermediate support frame 31 are supported from below mainly by the guide member 510 and move in a first direction along the tie bar 520.

[0018] Furthermore, the injection molding machine 1 includes a cavity plate 13 having multiple female mold portions 12. In this embodiment, a total of 12 female mold portions 12 are provided, forming two rows of six female mold portions arranged vertically, and the cavity plate 13 having 12 female mold portions 12 is attached to the fixed mold 10. Furthermore, a sensor 100 is attached to the cavity plate 13 to detect whether or not the final molded product 600 is located between the fixed mold 10 and the cavity plate 13. The sensor 100 will be described in detail later.

[0019] The movable mold 20 includes a movable injection mold 22, a first bottom mold 23, a second bottom mold 24, and a suction device 25 for sucking up the final molded product 600. The movable injection mold 22 has a drive-side movable part 22a and a driven-side movable part 22b, which are arranged facing each other. The drive-side movable part 22a and the driven-side movable part 22b are moved in a second direction by the mold drive cylinder device 26, causing them to come into contact and separate. When the drive-side movable part 22a and the driven-side movable part 22b come into contact, an injection molding female mold 27 is formed. In this embodiment, one pair of drive-side movable part 22a and driven-side movable part 22b forms six injection molding female molds 27 arranged in the vertical direction, and two pairs of drive-side movable part 22a and driven-side movable part 22b are arranged side by side in the second direction. The drive-side movable part 22a is connected to the piston rod 26a of the mold drive cylinder device 26 and is moved directly by the mold drive cylinder device 26. The driven movable part 22b is connected to the driving movable part 22a of another set and is moved in a second direction so as to come into contact with and separate from the driving movable part 22a of its own set. The split-type drive cylinder device 26 can be exemplified by, for example, a pneumatic cylinder device.

[0020] The first bottom mold 23 is attached to the movable platen 21. The first bottom mold 23 has a through hole 23a that penetrates in the first direction. The through hole 23a is positioned on the extension of the center line of the final molded product 600 when the drive-side movable part 22a and the driven-side movable part 22b are closed in the mold, and forms a space in which the second bottom mold 24 can be positioned. Around the through hole 23a in the first bottom mold 23, a recess 23b is formed that is recessed from the contact surface with the movable blowing split mold 22.

[0021] The second bottom mold 24 is a cylindrical member and is positioned in the through hole 23a of the first bottom mold 23. The second bottom mold 24 is positioned to protrude slightly from the recess 23b of the first bottom mold 23 toward the first side in the first direction. The diameter of the second bottom mold 24 is slightly smaller than the diameter of the through hole 23a of the first bottom mold 23. Therefore, when the second bottom mold 24 is positioned in the through hole 23a, a gap is formed between the first bottom mold 23 and the second bottom mold 24.

[0022] The suction device 25 consists of a vacuum pump and the like, and sucks up the final molded product 600. Specifically, the suction device 25 sucks up the final molded product 600 using the gap formed between the first bottom mold 23 and the second bottom mold 24 as an air passage during suction.

[0023] The intermediate mold 30 includes a rotating frame 35 that is rotatably attached to the intermediate mold support frame 31, and a core mold frame 50 that is not rotatably attached to the intermediate mold support frame 31. Here, the intermediate support frame 31 comprises rectangular parallelepiped-shaped legs 32, which are positioned at both ends in the second direction and are shaped such that the vertical direction is the longitudinal direction and the first direction is the short direction; a top plate 33u connecting the upper parts of both legs 32; and a bottom part 33b connecting the lower parts of both legs 32. A cylindrical support column 34 is fixed to the vertical center of each leg 32, and is attached so as to penetrate the leg 32 in the second direction. Furthermore, through holes (not shown) in the first direction for passing tie bars 520 are formed in the upper and lower parts of each leg 32.

[0024] The rotating frame 35 is attached to the outer circumference of the support column 34 via bearing members 36 such as ball bearings, and is rotatable relative to the intermediate support frame 31 with the centerline of the support column 34 as the center of rotation. In this embodiment, an annular driven gear 37 is attached to the side surface of the rotating frame 35, and a drive gear 38b attached to the rotating shaft 38a of the electric motor 38 meshes with the driven gear 37. As a result, the rotating frame 35 rotates around the support column 34 when the electric motor 38 is operated.

[0025] The intermediate mold 30 has a plurality of guide bars 39 attached to the rotating frame 35 so as to extend in a first direction, and a gripping frame 40 that is slidably attached to the guide bars 39 in the first direction. In this embodiment, in the open state shown in Figures 1 and 2, the intermediate mold 30 has one guide bar 39 at the first end of the rotating frame 35, and one at the upper and lower ends of each end in the second direction. In addition, the rotating frame 35 has one guide bar 39 at the second end, and one at the upper and lower ends of each end in the second direction. In other words, the intermediate mold 30 according to this embodiment has a total of eight guide bars 39. However, the intermediate mold 30 may also have four guide bars at the upper and lower ends of each end in the second direction, extending on both the fixed mold 10 side and the movable mold 20 side.

[0026] In the state shown in Figures 1 and 2, one gripping frame 40 is provided at each end of the rotating frame 35 in the first direction. The gripping frames 40 are slidably mounted on four guide bars 39, which are located on the same side with respect to the centerline of the support column 34. The gripping frame 40 has a gripping device 41 for forming and gripping the mouth portion 620 of the final molded product 600. The gripping device 41 includes a screw split mold 42 for forming and gripping the mouth portion 620, a slide plate 43 to which the screw split mold 42 is attached, and a gripping release member 44 for releasing the grip of the mouth portion 620. The gripping release member 44 is driven by a gripping release drive device (not shown). The screw split mold 42 forms the mouth portion 620 in a closed state during injection molding and grips the mouth portion 620 in a closed state during blow molding. The screw split mold 42 also releases the mouth portion 620 by opening the mold after the completion of blow molding.

[0027] More specifically, the screw mold 42 is configured to be separable in a second direction, with each half of the screw mold 42 attached to the half of the slide plate 43. The half of the slide plate 43 is also attached to the gripping frame 40 so as to be slidable in the second direction. The gripping release member 44 is configured to be separable in a second direction, with each half of the gripping release member 44 attached to the half of the slide plate 43. When the gripping release member 44 is pushed open in the second direction, the half of each slide plate 43 and the half of each screw mold 42 are also pushed open and separated in the second direction. This releases the grip on the mouth 620 of the final molded product 600 after the blow molding is completed at the blow station. In this embodiment, the screw split mold 42 is provided at positions corresponding to the female mold portion 12 attached to the fixed mold 10 and the female mold 27 for blow molding of the movable blow split mold 22. In other words, in the state shown in Figures 1 and 2, the screw split mold 42 forms two rows of six pieces arranged vertically.

[0028] The core formwork 50 is fixed to the support column 34, thereby being non-rotatably attached to the intermediate support frame 31. An injection core mold 51 is attached to the side of the core mold 50 facing the fixed platen 11, and a blowing guide 52 is attached to the side of the core mold 50 facing the movable platen 21. The injection core mold 51 has a base portion 51a and a male mold portion 51b, and in the closed state, it forms a cavity with the shape of the preform 610 between itself and the female mold portion 12. The blowing guide 52 has a base portion 52a and, when in a closed state, is in close contact with the entrance of the female mold 27 for blow molding, which is formed by the close contact of the drive-side movable portion 22a and the driven-side movable portion 22b, and forms a space for blow molding that has the shape of the final molded product 600.

[0029] The intermediate mold 30 also includes a stretch rod 53 that can protrude from the base portion 52a of the blowing guide 52, a connecting plate 54 to which the base portions of the multiple stretch rods 53 are attached, and a stretch rod drive device 55 for protruding the stretch rods 53. The stretch rod drive device 55 can be exemplified as, for example, a pneumatic cylinder device. The stretch rod drive device 55 can be exemplified as being attached to the upper and lower outer surfaces of the core mold 50. The connecting plate 54 is connected to the piston rod of the stretch rod drive device 55. When the stretch rod drive device 55 is operated, the connecting plate 54 connected to the piston rod moves, and the stretch rod 53 protrudes into the preform 610. In this embodiment, the final molded product 600 is formed from the preform 610 by stretch-blow molding, in which the stretch rod 53 is made to protrude into the preform 610, and high-pressure air is blown into the preform 610 while stretching it.

[0030] Furthermore, the injection molding machine 1 includes an intermediate mold drive cylinder device 15 that moves the intermediate mold support frame 31 in a first direction relative to the fixed platen 11, and a connecting rod 16 connected to the piston rod of the intermediate mold drive cylinder device 15. The intermediate mold drive cylinder device 15 is fixed to the fixed platen 11, and the connecting rod 16 is attached to the intermediate mold support frame 31. By operating the intermediate mold drive cylinder device 15, the intermediate mold support frame 31 can be moved relative to the fixed platen 11. As a result, the injection molding machine 1 can perform injection molding and blow molding by closing, clamping, and opening the mold at separate timings in the injection station and the blowing station.

[0031] Furthermore, the injection molding machine 1 has a control device 70 that controls the injection molding machine 1. The control device 70 has a CPU (Central Processing Unit) (not shown), a ROM (Read Only Memory) (not shown) which is a memory area for storing programs, and a RAM (Random Access Memory) (not shown) which is a program execution area. The control device 70 realizes various functions by having the CPU execute programs stored in the ROM or a storage device such as an HDD (Hard Disk Drive) or semiconductor memory. The control device 70 also controls the operation of the sensor 100, and the control device 70 receives detection results from the sensor 100 and other various sensors. Based on the detection results from the various sensors, the control device 70 controls the operation of the injection device (not shown), the clamping device (not shown), the intermediate mold drive cylinder device 15, the electric motor 38, the grip release drive device (not shown), the stretch rod drive device 55, etc. The operation of the injection molding machine 1, which is performed based on the control by the control device 70, will be described below.

[0032] (operation) In this embodiment, the injection blow molding machine 1, in one molding cycle, forms 12 preforms 610 equal to the number of female molds 12 by injection molding at the injection station. In addition, at the blow station, the injection blow molding machine 1 uses the same number of preforms 610 formed at the injection station in the previous molding cycle to perform blow molding and form 12 final molded products 600.

[0033] First, as shown in Figures 1 and 2, the mold opens at the injection station and blowing station, and a mold clamping device (not shown) activates to begin closing the mold. This causes the movable platen 21 to move from the open state to the closed state, that is, closer to the fixed platen 11. While the movable platen 21 is moving from the open state to the closed state, the intermediate mold drive cylinder device 15 activates, causing the intermediate mold support frame 31 to move from the open state to the closed state, that is, closer to the fixed platen 11. Before the movable platen 21 moves from the open state to the closed state, the split mold drive cylinder device 26 is activated, causing the drive-side movable part 22a and the driven-side movable part 22b to move in the second direction and close, forming the female mold 27 for blow molding.

[0034] Then, when the movable platen 21 is in the closed position, the mold closing is completed at the injection station and the blowing station. In this case, the gripping frame 40 at the injection station and the blowing station is in contact with the core mold 50.

[0035] In this case, at the injection station, each male mold portion 51b is inserted into each female mold portion 12 attached to the fixed mold 10. A cavity is formed between the inner surface of the female mold portion 12 and the screw split mold 42 and the outer surface of the male mold portion 51b. The resin injected by the injection device is then filled into the cavity. Even after the resin filling is complete, the mold remains closed to cool the resin inside the cavity.

[0036] Furthermore, in the blowing station, as shown in Figure 3(a), the screw split mold 42, which is gripping the mouth 620 of the preform 610, is pressed against the opening of the blow-molding female mold 27 formed by the drive-side movable part 22a and the driven-side movable part 22b. As a result, the flange of the preform 610 is pressed against the outer surface of the opening of the blow-molding female mold 27, and the part beyond the flange enters the inside of the blow-molding female mold 27. Also, the tip 52b of the base 52a of the blowing guide 52 enters the mouth 620 of the preform 610. Then, the stretch rod drive device 55 is activated, and the stretch rod 53 protrudes toward the back of the blow-molding female mold 27, and at the same time, high-pressure air is blown into the inside of the preform 610, causing the preform 610 to expand and press against the inner surface of the blow-molding female mold 27. As a result, as shown in Figure 3(b), a bottle-shaped or bottle-shaped bottomed container having the shape of the inner surface of the female mold 27 for blow molding is formed as the final molded product 600. When the stretching is complete, the stretching rod 53 is returned to its original position from its protruding state. Then, when the blow molding is complete, the clamping force applied to the movable platen 21 by the mold clamping device is released.

[0037] Subsequently, while maintaining the positional relationship between the drive-side movable part 22a and the driven-side movable part 22b and the gripping device 41, the movable platen 21 moves away from the core mold 50. Then, when a predetermined gap is formed between the screw split mold 42 and the blowing guide 52, the drive-side movable part 22a and the driven-side movable part 22b move in a second direction. The screw split mold 42 is also pushed open in the second direction, opening the mouth 620. Then, when the distance between the drive-side movable part 22a and the driven-side movable part 22b becomes at least greater than the outer diameter of the final molded product 600, the final molded product 600 falls downward from between the drive-side movable part 22a and the driven-side movable part 22b. The final molded product 600 is discharged below the injection blowing molding machine 1 and stored in a storage device (not shown).

[0038] Subsequently, the intermediate mold drive cylinder device 15 operates, causing the intermediate mold support frame 31 to move from the mold closed state to the mold open state, that is, away from the fixed platen 11. As the core mold frame 50 moves along with the intermediate mold support frame 31, the male mold portion 51b is pulled out from the female mold portion 12 attached to the fixed mold 10. Subsequently, as the intermediate mold support frame 31 moves further away from the fixed platen 11, the gripping frame 40 also moves along with it, and the screw split mold 42 is pulled out from the female mold portion 12. In this case, the split portion of the screw split mold 42 is biased toward the center by the biasing member and is connected to each other, so it grips the mouth portion 620 of the preform 610.

[0039] As a result, the gripping frame 40 in the injection station reaches a position away from the fixed mold 10 with the screw split mold 42 gripping all 12 preforms 610. Next, the electric motor 38 is activated, causing the rotating frame 35 to rotate around the centerline of the support column 34. As a result, the gripping frame 40 in which the screw mold 42 grips the preform 610 moves from the injection station to the blowing station, and the other gripping frame 40 moves from the blowing station to the injection station.

[0040] Then, when the rotation of the rotating frame 35 is complete, the mold opens at the injection station and the blowing station. This completes one molding cycle. Thereafter, the above operation is repeated, and a predetermined number of molding cycles are repeated.

[0041] However, if the control device 70 detects that the final molded product 600 is located between the fixed mold 10 and the intermediate mold 30, it stops all operations of the injection molding machine 1, including the operation of the clamping device and the intermediate mold drive cylinder device. This is because if the mold is closed while the gripping device 41 of the intermediate mold 30 is gripping the final molded product 600, the final molded product 600 may be crushed by being sandwiched between the intermediate mold 30 and the cavity plate 13, which would have adverse effects. Examples of adverse effects include damage to the female mold section 12 and the intermediate mold 30, and overfilling of the resin if the crushed final molded product 600 is inside the female mold section 12 when resin is filled. Therefore, the injection molding machine 1 is equipped with a sensor 100, and if the sensor 100 detects that the final molded product 600 is between the cavity plate 13 and the intermediate mold 30 before the mold is closed, the control device 70 stops all operations of the injection molding machine 1.

[0042] The following provides a detailed description of sensor 100. Figure 4 is an example of a view of the injection molding machine 1 as seen in the direction of section IV in Figure 2. Figure 5 is an example of a diagram showing when the sensor 100 detects that the final molded product 600 is located between the cavity plate 13 and the intermediate mold 30. Sensor 100 is a laser sensor capable of calculating the distance to an object through the emission and reception of laser light. Sensor 100 is mounted on the upper part of the cavity plate 13 and emits a laser downward so as to detect the presence of the final molded product 600 between the cavity plate 13 and the intermediate mold 30 before the mold is closed. When the mold is open, it is preferable that the sensor 100 is mounted so that, in the first direction, its position is such that it can emit a laser downward at a distance less than the height H of the final molded product 600, in the first direction from the first end face of the gripping frame 40 facing the cavity plate 13 (see Figure 5). In other words, it is preferable that the sensor 100 is mounted so that the laser emitted downward hits the final molded product 600 and so as to be able to receive the light that hits and is reflected back. Furthermore, as shown in Figure 4, the sensor 100 is positioned so that its vertical position is above the upper surface of the cavity plate 13.

[0043] Furthermore, two sensors 100 are provided in the second direction. In this embodiment, a total of 12 female mold portions 12 are provided so that two rows of six are arranged vertically. As shown in Figure 4, one sensor is provided above each of the two rows. This is because the laser emitted by the laser sensor is directional, allowing for highly accurate detection of the final molded products 600 present in each of the two rows.

[0044] The method for attaching the sensor 100 to the upper part of the cavity plate 13 is not particularly limited. For example, as shown in Figure 5, the sensor 100 can be attached to the tip of an arm 110 that is fixed to the upper surface of the cavity plate 13 with fastening members such as bolts or screws. As shown in Figure 4, one sensor 100 may be attached to the tip of one arm 110, or two sensors 100 may be attached to the tip of one arm 110.

[0045] With the sensor 100 configured as described above, it is possible to detect the presence of the final molded product 600 between the fixed mold 10 and the intermediate mold 30 before the mold is closed by using the time it takes to emit a laser beam, receive the light that hits the final molded product 600 and reflects back. Since the laser beam travels in a straight line, it is possible to detect the final molded product 600 at any position in the same row with a single sensor 100.

[0046] In the embodiment described above, the base of the arm 110, to which the sensor 100 is attached at its tip, is fixed to the cavity plate 13. However, the position in which the base of the arm 110 is fixed is not particularly limited. For example, the base of the arm 110 may be attached to the fixed mold 10, or to the fixed platen 11. Alternatively, the base of the arm 110 may be attached to the frame 500. Furthermore, the base of the arm 110 may be attached to the intermediate mold support frame 31 or the intermediate mold 30.

[0047] Alternatively, the sensor 100 may be positioned to detect the presence of the final molded product 600 between the fixed mold 10 and the intermediate mold 30 before the mold is closed by projecting a laser beam from below to above the cavity plate 13. For example, the base of the arm 110, to which the sensor 100 is attached at its tip, can be fixed to at least one of the cavity plate 13, the fixed mold 10, the fixed platen 11, or the frame 500. Alternatively, the base of the arm 110 can be attached to the intermediate mold support frame 31 or the intermediate mold 30. When the base of the arm 110 is attached to the intermediate mold 30, it is preferable to attach it to the rotating frame 35 or the gripping frame 40.

[0048] Furthermore, the sensor 100 is not limited to a laser sensor. The sensor 100 may be an ultrasonic sensor capable of calculating the distance to an object through the transmission and reception of ultrasonic waves. The ultrasonic sensor can detect the presence of the final molded product 600 between the fixed mold 10 and the intermediate mold 30 before the mold is closed by using the time it takes to transmit ultrasonic waves and receive the reflected waves that hit the final molded product 600 and return. Even if the sensor 100 is an ultrasonic sensor, the presence of the final molded product 600 can be detected by attaching it to the cavity plate 13 or the like using the same method as in the case of a laser sensor.

[0049] Furthermore, the sensor 100 may have a camera and use the image captured by the camera to detect the presence of the final molded product 600 between the fixed mold 10 and the intermediate mold 30 before the mold is closed. The sensor 100 can detect the presence of the final molded product 600 by comparing the image captured by the camera with an image previously captured and stored in a storage device. Alternatively, the camera may transmit the image captured to the control device 70, and the control device 70 may detect the presence of the final molded product 600 by comparing the image transmitted from the camera with an image previously captured and stored in a storage device. Furthermore, if the sensor 100 is a camera type, by using a camera with a field of view that can capture the entire area between the fixed mold 10 and the intermediate mold 30 before the mold is closed, one camera can detect all 12 locations in the two rows of the final molded product 600.

[0050] Furthermore, by positioning the sensor 100 outside the end face in the second direction of the cavity plate 13 and projecting a laser in the second direction, it is also possible to detect the presence of the final molded product 600 between the fixed mold 10 and the intermediate mold 30 before the mold is closed. In this configuration, considering the straightness of the laser, it is necessary to provide one sensor at each position corresponding to the six female mold sections 12 arranged in the vertical direction, thus requiring six sensors 100. Even in this case, it is preferable to attach the base of the arm 110 with the sensor 100 attached to its tip to at least one of the cavity plate 13, fixed mold 10, fixed platen 11, intermediate mold support frame 31, or intermediate mold 30. Furthermore, in this configuration, the sensor 100 may be an ultrasonic sensor or a camera system with a camera.

[0051] As described above, the injection blow molding machine 1 includes a cavity plate 13, a fixed mold 10, and a fixed platen 11 (hereinafter sometimes referred to as "fixed members") fixed to the frame 500. The injection blow molding machine 1 also includes a movable mold 20 and a movable platen 21 (hereinafter sometimes referred to as "movable members") that are movable relative to the fixed members. The injection blow molding machine 1 also includes a gripping frame 40 (an example of a rotating member) positioned between the fixed members and the movable members, which, after molding the preform 610 together with the fixed members, rotates to face the movable members while gripping the preform, and after molding the final molded product 600 together with the movable members, rotates to face the fixed members. The injection blow molding machine 1 also includes a sensor 100 (an example of a detection means) attached to the fixed members, the gripping frame 40, or the frame 500, which detects whether or not the final molded product 600 is present between the fixed members and the gripping frame 40.

[0052] With the injection molding machine 1 configured as described above, the control device 70 can stop the operation of the injection molding machine 1 when the sensor 100 detects that the final molded product 600 is present between the fixing member and the gripping frame 40. As a result, it is possible to prevent adverse effects on the injection molding machine 1 caused by the final molded product 600 being crushed, such as by being sandwiched between the intermediate mold 30 and the cavity plate 13.

[0053] In the injection blow molding machine 1 described above, the sensor 100 is preferably mounted on the upper part of a fixed member (at least one of the cavity plate 13, fixed mold 10, and fixed platen 11). For example, in the embodiment described above, the sensor 100 is mounted on the upper part of the cavity plate 13. For example, since water piping for cooling the fixed mold 10 etc. is close to the frame 500, mounting the sensor 100 to a fixed member offers greater flexibility in selecting a mounting location than mounting the sensor 100 to the frame 500.

[0054] In the injection blow molding machine 1 according to this embodiment, six preforms 610 and final molded products 600 are molded in a vertical arrangement. Therefore, if the sensor 100 is a laser sensor or an ultrasonic sensor, it is desirable that it detects along the vertical direction. In the injection blow molding machine 1 according to this embodiment, two preforms 610 and final molded products 600 are molded in a second arrangement. Therefore, the number of sensors 100 can be reduced compared to when the sensor 100 detects along the second direction.

[0055] In other words, the injection molding machine 1 molds multiple preforms 610 and final molded products 600 in a vertical arrangement, and also molds multiple preforms 610 and final molded products 600 in a second direction which is perpendicular to the direction of movement of the movable member relative to the fixed member (in other words, the first direction) and perpendicular to the vertical direction. Preferably, the injection molding machine 1 is equipped with sensors 100 that detect along the direction with the larger number of arrangements, which is either the vertical arrangement of 6 or the second arrangement of 2. In other words, in the injection molding machine 1 according to this embodiment, it is preferable to be equipped with sensors 100 that detect along the vertical direction with the larger number of arrangements, which is either the vertical arrangement of 6 or the second arrangement of 2. This is because the number of sensors 100 can be reduced compared to a configuration equipped with sensors 100 that detect along the second direction with the smaller number of arrangements. The sensor 100 may be a camera-type sensor with a camera, but the cost can be reduced if the sensor 100 is a laser sensor or an ultrasonic sensor.

[0056] <Second Embodiment> Figure 6 is an example of a view of the injection blow molding machine 2 according to the second embodiment, as seen in the direction of part VI in Figure 2. Figure 7 is an example of a diagram showing when the sensor 200 detects that the final molded product 600 is located between the movable mold 20 and the intermediate mold 30. The injection molding machine 2 according to the second embodiment differs from the injection molding machine 1 according to the first embodiment in that it detects the presence of the final molded product 600 between the movable mold 20 and the intermediate mold 30 after mold opening. The differences from the first embodiment will be described below. The same reference numerals are used for the same components in the first and second embodiments, and their detailed descriptions will be omitted.

[0057] For example, if the gripping device 41 remains gripping the final molded product 600 after blow molding, the gripping frame 40 may then rotate, potentially causing the final molded product 600 to reach the space between the fixed mold 10 and the intermediate mold 30. In the injection blow molding machine 2 according to the second embodiment, a sensor 200 is provided to detect that the final molded product 600 is between the movable mold 20 and the intermediate mold 30 after the mold has been opened, before the final molded product 600 is rotated to be positioned between the fixed mold 10 and the intermediate mold 30. The sensor 200 has a camera 201 and can be exemplified as detecting the presence of the final molded product 600 by comparing an image captured by the camera 201 with an image previously captured and stored in a storage device. Alternatively, the camera 201 may transmit an image captured by the camera 201 to a control device 70, and the control device 70 may detect the presence of the final molded product 600 by comparing the image transmitted from the camera with an image previously captured and stored in a storage device. In this case, the sensor 200 is composed of the camera 201 and the control device 70.

[0058] Furthermore, it can be exemplified that the camera 201 is mounted above the movable mold 20 and has a field of view capable of capturing images of the portion of the movable mold 20 side of all 12 gripping devices 41 of the intermediate mold 30 after the mold has been opened. By using a sensor 200 equipped with a camera 201, a single camera 201 attached to the movable platen 21 can detect whether at least one of the 12 gripping devices 41 of the intermediate mold 30 is gripping the final molded product 600 after the mold has been opened. When the sensor 200 detects that the final molded product 600 is between the movable mold 20 and the intermediate mold 30 after the mold has been opened, the control device 70 stops all operations, thereby preventing the final molded product 600 from reaching the area between the fixed mold 10 and the intermediate mold 30. As a result, damage to the fixed mold 10 and the intermediate mold 30 is suppressed.

[0059] The position and method of attaching the camera 201 to the upper part of the movable mold 20 are not particularly limited. For example, as shown in Figure 6, the camera 201 can be attached to the tip of an arm 210 that is fixed to the upper surface of the driven movable part 22b with fastening members such as bolts and screws. Alternatively, as shown in Figure 6, one camera 201 can be attached to the tip of one arm 210.

[0060] Furthermore, although the base of the arm 210, to which the camera 201 is attached at its tip, is fixed to the movable mold 20, the position in which the base of the arm 210 is fixed is not particularly limited. For example, the base of the arm 210 may be attached to the movable platen 21. Alternatively, the base of the arm 210 may be attached to the frame 500. Alternatively, the base of the arm 210 may be attached to the intermediate mold support frame 31 or the intermediate mold 30.

[0061] Furthermore, instead of mounting the camera 201 to photograph the space between the movable mold 20 and the intermediate mold 30 from above, the camera 201 may be mounted to photograph the space between the movable mold 20 and the intermediate mold 30 from below. Alternatively, the camera 201 may be mounted from the outside of the end of the intermediate mold 30 in the second direction to photograph the space between the movable mold 20 and the intermediate mold 30 in the second direction.

[0062] Figure 8 is an example of a diagram showing a modified version of sensor 200. The sensor 200 may be a laser sensor or an ultrasonic sensor. If the sensor 200 is a laser sensor, as shown in Figure 8, it is preferable that it be mounted so that the laser can be projected downward from the second end face of the gripping frame 40 facing the movable mold 20 in the direction of the second side, at a distance less than the height H of the final molded product 600, in the direction of the second side. This is because lasers travel in a straight line. Similarly, if the sensor 200 is an ultrasonic sensor, it is preferable that it be mounted so that the ultrasonic waves can be projected downward from the second end face of the gripping frame 40 facing the movable mold 20 in the direction of the second side, at a distance less than the height H of the final molded product 600, in the direction of the second side, in the direction of the second side. Furthermore, if the sensor 200 is a laser sensor or an ultrasonic sensor, for example, the base of the arm 210 with the sensor 200 attached to its tip may be attached to at least one of the movable platen 21, frame 500, intermediate mold 30, or intermediate mold support frame 31.

[0063] Furthermore, if the sensor 200 is a laser sensor, it is possible to detect the final molded product 600 between the movable mold 20 and the intermediate mold 30 after the mold has opened by placing it outside the end face in the second direction of the movable mold 20 and projecting a laser in the second direction. In this configuration, considering the straightness of the laser, it is necessary to place one sensor at each position corresponding to the six gripping devices 41 arranged in the vertical direction, thus requiring six sensors 200. Even in this case, it is preferable to attach the base of the arm 210 with the sensor 200 attached to its tip to at least one of the movable mold 20, movable platen 21, frame 500, intermediate mold 30, or intermediate mold support frame 31. Furthermore, in this configuration, the sensor 200 may also be an ultrasonic sensor.

[0064] As described above, the injection blow molding machine 2 is equipped with a sensor 200 (an example of a detection means) attached to the movable member or the gripping frame 40, which detects whether or not the final molded product 600 is present between the movable member and the gripping frame 40. With the injection molding machine 2 configured as described above, the control device 70 can stop the operation of the injection molding machine 2 when the sensor 200 detects that the final molded product 600 is located between the movable member and the gripping frame 40. This prevents the final molded product 600 from rotating between the intermediate mold 30 and the fixed mold 10. As a result, it is possible to prevent adverse effects on the injection molding machine 2 caused by the final molded product 600 being crushed, such as by being caught between the intermediate mold 30 and the cavity plate 13.

[0065] In the injection molding machine 2 described above, the sensor 200 is preferably mounted on the upper part of a movable member (at least one of the movable mold 20 and the movable platen 21). For example, in the embodiment described above, the sensor 200 is mounted on the upper part of the movable mold 20. For example, since water pipes for cooling the movable mold 20 etc. are located close to the frame 500, mounting the sensor 200 on a movable member offers greater flexibility in selecting a mounting location than mounting the sensor 200 on the frame 500.

[0066] Furthermore, the injection molding machine 2 may be equipped with a sensor 100 according to the first embodiment in addition to the sensor 200, and the control device 70 may control the operation of the injection molding machine 2 based on the detection results of the sensor 100 and the sensor 200. This accurately suppresses adverse effects on the injection molding machine 2 caused by the final molded product 600 being crushed between the intermediate mold 30 and the cavity plate 13.

[0067] <Third Embodiment> Figure 9 is an example of a view of the injection blow molding machine 3 according to the third embodiment, as seen in the direction of part VI in Figure 2. Figure 10 is an example of a diagram showing when the sensor 300 detects that the final molded product 600 is located between the drive-side movable part 22a and the driven-side movable part 22b. The injection blow molding machine 3 according to the third embodiment differs from the injection blow molding machine 1 according to the first embodiment in that it detects the presence of the final molded product 600 between the drive-side movable part 22a and the driven-side movable part 22b after mold opening. The differences from the first embodiment will be described below. The same reference numerals are used for the same parts in the first and third embodiments, and their detailed descriptions will be omitted.

[0068] For example, if, after blow molding, the final molded product 600 remains in place without falling between the drive-side movable part 22a and the driven-side movable part 22b, the final molded product 600 will be crushed between the drive-side movable part 22a and the driven-side movable part 22b during the next mold closing. As a result, there is a risk of damage to the movable blow-molding split mold 22, the gripping device 41, etc. In the injection blow molding machine 3 according to the third embodiment, there is a sensor 300 that detects whether the final molded product 600 is located between the drive-side movable part 22a and the driven-side movable part 22b. The sensor 300 detects the presence or absence of the final molded product 600 immediately after the mold opens between the drive-side movable part 22a and the driven-side movable part 22b, for example, when blow molding is performed.

[0069] Sensor 300 is a laser sensor. Sensor 300 is mounted on the upper part of the movable platen 21 and projects a laser downward. In the example shown in Figure 10, the sensor 300 is positioned in the first direction at the location where the blow molding female mold 27 is formed. Also, as shown in Figure 10, the sensor 300 is positioned in the vertical direction above the upper surface of the movable blow split mold 22. Furthermore, as shown in Figure 9, two sensors 300 are provided in the second direction. In this embodiment, a total of 12 blow molding female molds 27 are provided, forming two rows of six molds each in the vertical direction. Therefore, as shown in Figure 9, one sensor 300 is provided above each of the two rows.

[0070] The method of attaching the sensor 300 to the upper part of the movable platen 21 is not particularly limited. For example, as shown in Figure 10, the sensor 300 can be attached to the tip of an arm 310 that is fixed to the upper surface of the movable platen 21 with fastening members such as bolts or screws. As shown in Figure 9, one sensor 300 may be attached to the tip of one arm 310, or two sensors 300 may be attached to the tip of one arm 310. The base of the arm 310, to which the sensor 300 is attached at its tip, may be attached to at least one of the movable mold 20, frame 500, intermediate mold 30, or intermediate mold support frame 31. Furthermore, the sensor 300 may be an ultrasonic sensor or a camera-type sensor.

[0071] With the injection molding machine 3 configured as described above, the control device 70 can stop the operation of the injection molding machine 3 when the sensor 300 detects that the final molded product 600 is located between the drive-side movable part 22a and the driven-side movable part 22b. This prevents damage to the movable injection mold 22, gripping device 41, etc., caused by the final molded product 600 being crushed between the drive-side movable part 22a and the driven-side movable part 22b during the next mold closing.

[0072] Furthermore, the injection molding machine 3 is equipped with at least one of the sensor 100 according to the first embodiment or the sensor 200 according to the second embodiment, and the control device 70 may control its operation based on the detection result of at least one of the sensors 100 or 200. As a result, the injection molding machine 3 is further able to accurately suppress adverse effects on the injection molding machine 3 caused by the final molded product 600 being crushed between the intermediate mold 30 and the cavity plate 13. [Explanation of Symbols]

[0073] 1,2,3…Injection blow molding machine, 10…Fixed mold (example of fixed component), 11…Fixed platen (example of fixed component), 13…Cavity plate (example of fixed component), 20…Movable mold (example of movable component), 21…Movable platen (example of movable component), 35…Rotating frame, 40…Gripping frame (example of rotating component), 41…Gripping device, 42…Screw split mold, 50…Core mold, 100,200,300…Sensor (example of detection means), 500…Frame, 600…Final molded product, 610…Preform

Claims

1. A fixing member fixed to the frame, A movable member that is movable relative to the fixed member, A rotating member is positioned between the fixed member and the movable member, and after forming a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after forming a final molded product together with the movable member, rotates to face the fixed member. A detection means attached to the fixed member, the rotating member, or the frame for detecting whether or not the final molded product is present between the fixed member and the rotating member, An injection blow molding machine equipped with [a specific feature].

2. The detection means is attached to the upper part of the fixing member, The injection blow molding machine according to claim 1.

3. Multiple preforms and final molded products are molded in a vertical arrangement. The detection means detects along the vertical direction, The injection blow molding machine according to claim 2.

4. The detection means is a laser sensor that emits a laser downwards, or an ultrasonic sensor that transmits ultrasonic waves downwards. The injection blow molding machine according to claim 3.

5. A fixing member fixed to the frame, A movable member that is movable relative to the fixed member, A rotating member is positioned between the fixed member and the movable member, and after forming a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after forming a final molded product together with the movable member, rotates to face the fixed member. A detection means attached to the movable member or the rotating member for detecting whether or not a final molded product exists between the movable member and the rotating member, An injection blow molding machine equipped with [a specific feature].

6. The detection means is mounted on the upper part of the movable member. The injection blow molding machine according to claim 5.

7. The detection means includes a camera that photographs the space between the movable member and the rotating member. The injection blow molding machine according to claim 5.

8. Multiple preforms and final molded products are molded in a vertical arrangement. The detection means detects along the vertical direction, The injection blow molding machine according to claim 5.

9. The detection means is an ultrasonic sensor that transmits ultrasonic waves downwards, or a laser sensor that projects laser light downwards. The injection blow molding machine according to claim 8.

10. A fixing member fixed to the frame, A movable member that is movable relative to the fixed member, A rotating member is positioned between the fixed member and the movable member, and after forming a preform together with the fixed member, rotates to face the movable member while gripping the preform, and after forming a final molded product together with the movable member, rotates to face the fixed member. Equipped with, An injection blow molding machine that molds multiple preforms and final molded products in a vertical arrangement, and also molds multiple preforms and final molded products in an orthogonal direction perpendicular to the direction of movement of the movable member relative to the fixed member and the vertical direction, The system includes detection means for detecting along the direction in which the number of arrangements in the vertical direction or the number of arrangements in the orthogonal direction is greater. Injection blow molding machine.

11. The number of arrangements in the vertical direction is greater than the number of arrangements in the orthogonal direction. The detection means is an ultrasonic sensor that transmits ultrasonic waves downwards, or a laser sensor that emits a laser downwards. The injection blow molding machine according to claim 10.

12. The detection means is attached to at least one of the upper part of the fixed member and the upper part of the movable member. The injection blow molding machine according to claim 10.

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