Plastic container forming device

Abstract

The utility model discloses a plastic container forming device which comprises a machine body, wherein an injection molding station, a pre-forming station and a forming station are arranged on the machine body; the mouth mold is mounted on the machine body and can sequentially move to the injection molding station, the pre-forming station and the forming station; the injection molding device is arranged at the injection molding station and is used for being matched with the mouth mold, so that a bottle preform with a downward bottle opening is formed at the top end of the mouth mold in an injection molding manner; the pre-forming device is arranged at the pre-forming station and is used for being matched with the mouth mold so as to carry out pre-blowing forming on a bottle blank which is subjected to injection molding at the top end of the mouth mold and provided with a downward bottle opening; and the forming device is arranged at the forming station and is used for being matched with the mouth mold so as to carry out blowing forming on a bottle blank which is pre-blown and formed at the top end of the mouth mold and has a downward bottle opening to form a bottle body. When the bottle preform is subjected to injection molding, pre-forming and forming, the formed bottle opening faces downwards, so that foreign matters are prevented from falling into the bottle preform and the bottle body in the forming process.

Description

Technical Field

[0001] The utility model relates to a plastic container forming device, in particular to a plastic container forming apparatus. Background Art

[0002] At present, for plastic containers such as liquid plastic bottles like beverage bottles and hanging bottles, generally three processes are required during production: In the first process, the injection cavity mold and the mouth mold cooperate to initially injection-mold a preform into a bottle embryo; in the second process, the injection cavity mold is separated from the mouth mold, the bottle embryo is hung at the bottom end of the mouth mold, and the mouth mold drives the bottle embryo to move to the next station, and cooperates with a pre-blowing core to initially blow the bottle embryo to stretch and initially form it; in the third process, the blowing core is separated from the mouth mold, the mouth mold drives the initially formed bottle embryo to move to the next station, and cooperates with the blowing core to blow the initially formed bottle embryo and finally form it into a bottle body.

[0003] However, in the existing blow molding process, some of the molds and equipment for injection molding, pre-blowing, and forming are located above the mouth mold for forming the caliber of the bottle embryo. During the operation of each station, the opening of the formed container structure always faces upward. Since the mold will vibrate during the mold closing and opening processes, foreign objects are likely to fall into the bottle embryo and the bottle body during the forming process; in addition, in the prior art, the bottle body needs to be inverted and then transferred to a cleaning station for blowing and cleaning, resulting in low cleaning efficiency. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a plastic container forming device, in which when the bottle embryo is injection-molded, pre-formed, and formed, the formed bottle mouth faces downward, preventing foreign objects from falling into the bottle embryo and the bottle body during the forming process.

[0005] The purpose of the utility model is achieved by adopting the following technical solutions:

[0006] A plastic container forming device includes:

[0007] A machine body, on which an injection molding station, a pre-forming station, and a forming station are provided;

[0008] A mouth mold, which is installed on the machine body and can sequentially move to the injection molding station, the pre-forming station, and the forming station;

[0009] An injection molding device, which is arranged at the injection molding station and is used to cooperate with the mouth mold to injection-mold a bottle embryo with a downward-facing bottle mouth at the top end of the mouth mold;

[0010] A pre-forming device, which is arranged at the pre-forming station and is used to cooperate with the mouth mold to pre-blow and form the bottle embryo with a downward-facing bottle mouth injection-molded at the top end of the mouth mold;

[0011] A forming device, which is arranged at a forming station and is used to cooperate with the die head to blow-mold a pre-blow-molded bottle blank with the bottle mouth facing down at the top of the die head to form a bottle body.

[0012] Further, the injection molding device includes an injection cavity mold and an injection core. The injection cavity mold is arranged at the top of the machine body and above the die head. An injection cavity is provided at the bottom of the injection cavity mold. The die head can move closer to or away from the injection cavity mold along the height direction of the machine body. The die head is used to penetrate into the injection cavity after moving closer to the injection cavity mold. The injection core is arranged on the machine body and below the die head. The injection core can move closer to or away from the die head along the height direction of the machine body. The injection core is used to penetrate into the die head and extend into the injection cavity after moving closer to the die head.

[0013] Further, the pre-forming device includes a pre-blow mold and a pre-blow core. The pre-blow mold is arranged at the top of the machine body and above the die head. A pre-blow cavity is provided at the bottom of the pre-blow mold. The die head can move closer to or away from the pre-blow mold along the height direction of the machine body. The die head is used to extend into the pre-blow cavity after moving closer to the pre-blow mold. The pre-blow core is installed on the machine body and below the die head. The pre-blow core can move closer to or away from the die head. The pre-blow core is used to extend out of the die head and penetrate into the pre-blow cavity after moving closer to the die head. The pre-blow core is used to blow air after penetrating into the pre-blow cavity.

[0014] Further, the forming device includes a blow mold and a first blowing core. The blow mold is arranged at the top of the machine body and above the die head. A forming cavity is provided at the bottom of the blow mold. The die head can move closer to or away from the blow mold along the height direction of the machine body. The die head is used to extend into the forming cavity after moving closer to the blow mold. The first blowing core is installed on the machine body and below the die head. The first blowing core can move closer to or away from the die head. The first blowing core is used to extend out of the die head and penetrate into the forming cavity after moving closer to the die head. The first blowing core is used to blow air after penetrating into the forming cavity. A stretching rod is penetrated in the first blowing core. The stretching rod is used to stretch the bottle blank when the first blowing core penetrates into the forming cavity.

[0015] Further, a stretching moving plate and a stretching moving plate driving member are provided on the machine body. The stretching moving plate is arranged below the first blowing core. The stretching rod is installed on the stretching moving plate. The stretching moving plate driving member is used to drive the stretching moving plate to move along the height direction of the machine body.

[0016] Further, a cleaning and bottle-taking station and a blowing and cleaning device are provided on the machine body. The blowing and cleaning device is arranged at the cleaning and bottle-taking station and is used to cooperate with the die head to blow and clean and take out the bottle body with the bottle mouth facing down that is blow-molded at the top of the die head.

[0017] Further, the air-blowing cleaning device includes a second air-blowing core, which is arranged on the machine body and located below the die. The second air-blowing core can move closer to or away from the die along the height direction of the machine body; the second air-blowing core is used to penetrate through the die and be inserted into the bottle body after moving closer to the die; the second air-blowing core is used to introduce gas into the bottle body to blow and clean the bottle body.

[0018] Further, the air-blowing cleaning device further includes a die opening and closing assembly, which is installed on the machine body and can move closer to or away from the die along the height direction of the machine body; the die opening and closing assembly is used to open the die after moving away from the die so that the bottle mouth is separated from the die.

[0019] The die opening and closing assembly includes a stripping plate, a stripping insert and a stripping plate driving member. There is a positioning socket on the die. The stripping insert is installed on the moving plate of the stripping frame. The stripping plate driving member is used to drive the stripping plate to move along the height direction of the machine body so that the stripping insert is inserted into the positioning socket.

[0020] Further, a turntable is arranged on the machine body. The turntable is pivotally connected to the machine body. There are a plurality of dies on the turntable. The injection molding device, the preforming device and the forming device are sequentially arranged at intervals in the rotation direction of the turntable.

[0021] Further, a turntable frame and a turntable frame driving member are arranged on the machine body. The turntable frame is installed on the machine body and can move along the height direction of the machine body; the turntable frame driving member is used to drive the turntable frame to move; the turntable is pivotally connected to the turntable frame.

[0022] Compared with the prior art, the beneficial effect of the present utility model is that during molding, the die can move to the injection molding station, and the die can cooperate with the injection molding device to preliminarily form a preform. The formed preform is located at the top of the die. Thereafter, the die drives the preform to move to the preforming station, and then cooperates with the preforming device to perform pre-blow molding. Then, the die drives the pre-blow molded preform to move to the forming station, and the die cooperates with the forming device to blow and form a bottle body. During the above process, the die is always at the bottom, that is, the bottle mouth of the formed bottle body is downward. In this way, it can prevent foreign objects from falling into the product from top to bottom during the transfer of the die.

[0023] In addition, the formed bottle body with the bottle mouth downward can be directly driven by the die to move to the cleaning and bottle taking station and cooperate with the air-blowing cleaning device to directly perform air-blowing cleaning. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2Structural schematic diagram of the injection molding device of the present utility model;

[0026] Figure 3 Structural schematic diagram of the preforming device of the present utility model;

[0027] Figure 4 Structural schematic diagram of the air blowing and cleaning device of the present utility model;

[0028] Figure 5 Structural schematic diagram of the air blowing and cleaning device of the present utility model.

[0029] In the figure: 10, machine body; 11, turntable frame; 12, turntable; 121, positioning socket; 13, turntable frame driving part; 20, die; 31, injection cavity mold; 311, injection cavity; 32, injection core; 33, injection core driving part; 41, pre-blowing mold; 42, pre-blowing cavity; 43, pre-blowing core; 44, stretching rod; 45, pre-blowing core plate; 451, pre-blowing core plate driving part; 46, stretching moving plate; 461, stretching moving plate driving part; 51, forming cavity; 52, first air blowing core; 53, first air blowing core plate; 54, first air blowing core plate driving part; 61, second air blowing core; 62, second air blowing core plate; 63, demolding insert; 64, demolding plate; 65, demolding plate driving part; 66, second air blowing core plate driving part. Specific embodiments

[0030] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined with each other to form new embodiments. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation to the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0032] In the description of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "connected", "communicated", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] The terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] As Figures 1-5 shown, a plastic container molding device includes a machine body 10, a mouth mold 20, an injection molding device, a preforming device, a forming device, and a blowing and cleaning device. An injection molding station, a preforming station, a forming station, and a cleaning and bottle taking station are provided on the machine body 10. The above-mentioned mouth mold 20 is installed on the machine body 10 and can sequentially move to the injection molding station, the preforming station, the forming station, and the cleaning and bottle taking station.

[0035] The specific injection molding device is arranged at the injection molding station and is used to cooperate with the mouth mold 20 to injection mold a preform at the top of the mouth mold 20; the preforming device is arranged at the preforming station and is used to cooperate with the mouth mold 20 to pre-blow the preform injection molded at the top of the mouth mold 20.

[0036] In addition, the forming device is arranged at the forming station and is used to cooperate with the mouth mold 20 to blow-mold the preform pre-blown at the top of the mouth mold 20 to form a bottle body; the blowing and cleaning device is arranged at the cleaning and bottle taking station and is used to cooperate with the mouth mold 20 to blow and clean the bottle body blow-molded at the top of the mouth mold 20. Specifically, the forming station is a blow molding station, and the forming device is a blow molding device.

[0037] Based on the above structure, when using the plastic container forming device of the present utility model, during forming, the mouth mold 20 can move to the injection molding station, and the mouth mold 20 can cooperate with the injection molding device to preliminarily form a preform. The formed preform is located at the top of the mouth mold 20. Thereafter, the mouth mold 20 drives the preform to move to the preforming station, and then cooperates with the preforming device to perform pre-blow molding. Then, the mouth mold 20 drives the pre-blow molded preform to move to the forming station, and the mouth mold 20 cooperates with the forming device to blow and form a bottle body. During the above process, the mouth mold 20 is located at the bottom end, that is, the mouth of the formed bottle body is downward. In this way, it can prevent foreign objects from falling into the product from top to bottom during the transfer of the mouth mold 20.

[0038] In addition, the formed bottle body with the mouth downward can be directly driven by the mouth mold 20 to move to the cleaning and bottle taking station, and cooperate with the air blowing cleaning device to directly perform air blowing cleaning.

[0039] Furthermore, the injection molding device includes an injection cavity mold 31 and an injection core 32. The injection cavity mold 31 is arranged at the top end of the machine body 10 and above the mouth mold 20, and an injection cavity 311 is provided at the bottom end of the injection cavity mold 31. The above-mentioned mouth mold 20 can move closer to or away from the injection cavity mold 31 along the height direction of the machine body 10, and the mouth mold 20 can be inserted into the injection cavity 311 after moving closer to the injection cavity mold 31. In addition, the injection core 32 is arranged on the machine body 10 and below the mouth mold 20. The injection core 32 can move closer to or away from the mouth mold 20 along the height direction of the machine body 10, and the injection core 32 can be inserted into the mouth mold 20 and extend into the injection cavity 311 after moving closer to the mouth mold 20.

[0040] Based on this structure, during injection molding, the mouth mold 20 can move upward and extend into the injection cavity 311 of the injection cavity mold 31. Thereafter, the injection core 32 can move closer to the mouth mold 20. After the injection core 32 moves closer to the mouth mold 20, it can pass through the mouth mold 20 and extend into the injection cavity 311. Thereafter, injection is carried out in the injection cavity 311 through the injection channel on the injection cavity mold 31. The structure of the mouth mold 20 can form a bottle embryo opening at the end of the injection cavity 311, and the injection core 32 can form a certain cavity structure inside the bottle embryo. The mouth mold 20 and the injection core 32 withdraw from the injection cavity 311, and the injection core 32 withdraws from the mouth mold 20, then a bottle embryo structure with a cavity and a bottle mouth can be preliminarily formed. Since the injection cavity 311 is above the mouth mold 20 during the forming process, the formed bottle mouth structure is downward, so that the mouth of the later formed container is downward, preventing dirt from falling through the bottle mouth during the transfer of the bottle embryo or the formed container and causing pollution.

[0041] Further, the preforming device includes a pre-blowing mold 41 and a pre-blowing core 43. The pre-blowing mold 41 is disposed at the top of the machine body 10 and above the die 20. Specifically, a pre-blowing cavity 42 is provided at the bottom end of the pre-blowing mold 41. Similarly, the above-mentioned die 20 can move closer to or away from the pre-blowing mold 41 along the height direction of the machine body 10, and the die 20 extends into the pre-blowing cavity 42 after moving closer to the pre-blowing mold 41. In addition, the above-mentioned pre-blowing core 43 is installed on the machine body 10 and below the die 20, and the pre-blowing core 43 can move closer to or away from the die 20, and the pre-blowing core 43 extends out of the die 20 and penetrates into the pre-blowing cavity 42 after moving closer to the die 20. And the pre-blowing core 43 can blow air after penetrating into the pre-blowing cavity 42.

[0042] On the basis of this structure, during pre-blowing forming, the preform formed above the die 20 at the injection molding station can move to the preforming station. When moving to the preforming station, the die 20 can move upward closer to the pre-blowing mold 41, so that the pre-blowing mold 41 is closed from above the die 20, and the preform on the die 20 can extend into the pre-blowing cavity 42. The pre-blowing core 43 penetrates into the pre-blowing cavity 42 from below the die 20, and the pre-blowing core 43 blows air to pre-blow and form the preform. Similarly, the blowing mouth of the preform faces downward, which can prevent foreign objects from falling into the preform, and during the pre-blowing process, foreign objects in the preform can also be cleaned, and the cleanliness of the preform is better after forming.

[0043] Further, the above-mentioned forming device includes a blowing mold and a first blowing core 52. The blowing mold is disposed at the top of the machine body 10 and above the die 20, and a forming cavity 51 is provided at the bottom end of the blowing mold. Specifically, the die 20 can move closer to or away from the blowing mold along the height direction of the machine body 10, and the die 20 extends into the forming cavity 51 after moving closer to the blowing mold.

[0044] The above-mentioned first blowing core 52 is installed on the machine body 10 and below the die 20; the first blowing core 52 can move closer to or away from the die 20; the first blowing core 52 extends out of the die 20 and penetrates into the forming cavity 51 after moving closer to the die 20; the first blowing core 52 is used for blowing air after penetrating into the forming cavity 51; a stretching rod 44 is penetrated in the first blowing core 52, and the stretching rod 44 is used for stretching the preform when the first blowing core 52 penetrates into the forming cavity 51.

[0045] During specific forming, the preform preformed at the preforming station can move to the forming station, and then the die 20 drives the preformed preform to move upward, driving the preform to extend into the forming cavity 51 of the blowing mold. The first blowing core 52 can extend out of the die 20 and penetrate into the forming cavity 51 after moving closer to the die 20. The first blowing core 52 blows air after penetrating into the forming cavity 51. A stretching rod 44 can also be penetrated in the first blowing core 52, and the stretching rod 44 can stretch the preform when the first blowing core 52 penetrates into the forming cavity 51.

[0046] Based on the above structure, when using the plastic container forming device of the present utility model, the pre-blow molded preform at the previous station can be located above the mouth mold 20, and the mouth mold 20 can be inserted through the bottom end of the preform. Therefore, the mouth structure formed by the mouth mold 20 can be at the bottom end of the bottle body.

[0047] Specifically, a stretching moving plate 46 and a stretching moving plate driving member 461 can also be provided on the machine body 10. The stretching moving plate 46 is arranged below the first blowing core 52, and the stretching rod 44 is installed on the stretching moving plate 46. The above stretching moving plate driving member 461 can drive the stretching moving plate 46 to move along the height direction of the machine body 10.

[0048] In this way, the stretching moving plate 46 can move closer to or away from the above first blowing core 52 under the drive of the stretching moving plate driving member 461. Therefore, the stretching rod 44 on the stretching moving plate 46 can move up and down relative to the first blowing core 52. In this way, the length of the stretching rod 44 extending out of the first blowing core 52 can be adjusted, that is, the length of the stretching rod 44 extending into the preform can be adjusted, which is convenient for shaping preforms of different models. Specifically, the extending length of the stretching rod 44 can be adjusted according to the size of the bottle body finally formed by the preform.

[0049] Furthermore, the above-mentioned blowing and cleaning device includes a second blowing core 61. The second blowing core 61 is arranged on the machine body 10 and below the mouth mold 20, and the second blowing core 61 can move closer to or away from the mouth mold 20 along the height direction of the machine body 10; the second blowing core 61 can pass through the mouth mold 20 and be inserted through the bottle body after moving closer to the mouth mold 20; the second blowing core 61 can introduce gas into the bottle body to blow and clean the bottle body.

[0050] Based on this structure, the bottle body formed at the forming station can move to the cleaning and bottle taking station under the drive of the mouth mold 20. After that, the second blowing core 61 can move upward, pass through the mouth mold 20, and extend into the bottle body. After that, the second blowing core 61 can be connected to an external gas supply device, and the second blowing core 61 can introduce gas into the bottle body to blow and clean the bottle body.

[0051] In this way, at the injection molding station, the preforming station, and the forming station, the mouth mold 20 is correspondingly located below the mold of the corresponding station, and each mold can be closed above the mouth mold 20, which can make the preforms and the bottle mouths of the bottle bodies formed at each station face downward, preventing foreign objects from falling into the product from above. In addition, the formed bottle body can also directly move to the cleaning and bottle taking station for blowing and cleaning.

[0052] Specifically, the blowing and cleaning device further includes a mouth mold opening and closing assembly. The mouth mold opening and closing assembly is installed on the machine body 10, and the mouth mold opening and closing assembly can move closer to or away from the mouth mold 20 along the height direction of the machine body 10.

[0053] Since the die is generally realized by two half-dies, that is, the two half-dies can approach each other to realize die clamping, and the two half-dies can move away from each other to realize die opening. When blowing and cleaning the bottle body, the die opening and closing assembly can move close to the die 20, cooperate with the two half-dies, make the two dies approach each other, realize die clamping, prevent the die 20 from shifting during the blowing process, and the blowing and cleaning effect is better. When the die opening and closing assembly moves away from the die, it can move away from the two half-dies to realize die opening, and then the bottle body can be taken off. More specifically, the die opening and closing assembly includes a stripping plate 64, a stripping insert 63 and a stripping plate driving member 65. A positioning socket 121 is correspondingly provided on the die 20. The stripping insert 63 is installed on the stripping plate 64, and the stripping plate driving member 65 can drive the stripping plate 64 to move in the height direction of the machine body 10 so that the stripping insert 63 is inserted into the positioning socket 121.

[0054] In this way, the stripping plate driving member 65 can drive the stripping plate 64 to move up and down, and then drive the stripping insert 63 on the stripping plate 64 to move up and down, so as to realize the cooperation with or withdrawal from the positioning socket 121 of the die 20. Specifically, when the stripping plate 64 moves upward, it can drive the stripping insert 63 to move upward, and the stripping insert 63 can be inserted into the positioning socket 121 to realize the positioning after die clamping. Further, in this embodiment, a turntable 12 can be provided on the machine body 10, and the turntable 12 is pivotally connected to the machine body 10. Of course, a plurality of dies 20 can be provided on the turntable 12. Die plates are correspondingly installed at the positions of the turntable 12 corresponding to the injection molding station, preforming station, forming station and cleaning and bottle taking station, and a plurality of dies 20 are provided on each die plate. The above injection molding device, preforming device, forming device and blowing and cleaning device are sequentially and spaced apart in the rotation direction of the turntable 12.

[0055] On the basis of this structure, a plurality of injection cavities 311 can be correspondingly provided at the bottom end of the injection cavity die 31 of the above injection molding device, and a plurality of injection cores 32 are provided. The plurality of injection cores 32 are installed on the injection core plate. An injection core driving member 33 is provided on the machine body 10. By driving the injection core plate to move up and down through the injection core driving member 33, the plurality of injection cores 32 can be correspondingly driven to penetrate or withdraw from the plurality of dies 20, so as to realize die opening or die clamping, and a plurality of preforms can be injection molded at one time.

[0056] Thereafter, the turntable 12 rotates to the next working station, corresponding to the position of the preforming device. At the bottom of the pre-blowing die 41 at this position, a plurality of pre-blowing cavities 42 can be correspondingly provided. Correspondingly, a plurality of the above-mentioned pre-blowing cores 43 can also be provided. The plurality of pre-blowing cores 43 can be installed on the pre-blowing core plate 45, and the pre-blowing core plate 45 is driven to move up and down by the pre-blowing core plate driving member 451. In addition, the above-mentioned stretching rods 44 can be inserted into each of the pre-blowing cores 43, and each of the stretching rods 44 is installed on the stretching moving plate 46 and moves up and down under the drive of the stretching moving plate driving member 461. In this way, the pre-blowing core plate driving member 451 drives the pre-blowing core plate 45 to move upward, pass through the die orifice 20 and close the mold with the pre-blowing die 41. At the same time, the stretching moving plate driving member 461 correspondingly drives the plurality of stretching rods 44 to move upward through the pre-blowing cores 43 for stretching actions, and multiple preforms can be pre-blown and formed at one time.

[0057] It should be noted that the stretching moving plate driving member 461 drives the plurality of stretching rods 44 on the stretching moving plate 46 to rise or fall synchronously. Therefore, the lengths of the plurality of stretching rods 44 extending out are the same, which is convenient for ensuring that the structural dimensions of the formed bottles are consistent.

[0058] Thereafter, the turntable 12 rotates to the forming station, and the plurality of die orifices 20 on the die orifice plate can drive the plurality of pre-blown preforms to move below the blowing die. A plurality of forming cavities 51 can be correspondingly provided at the bottom of the blowing die. Similarly, a plurality of the above-mentioned first blowing cores 52 are correspondingly provided and can all be installed on the first blowing core plate 53. By driving the first blowing core plate 53 with the first blowing core plate driving member 54, the plurality of first blowing cores 52 can be driven to move up and down, correspondingly pass through the plurality of die orifices 20 to the bottles on the die orifices 20, and perform a mold closing action with the blowing die for blowing and forming, and multiple bottles can be formed at one time.

[0059] Finally, the plurality of die orifices 20 on the die orifice plate move to the cleaning and bottle taking station under the rotation of the turntable 12. A plurality of the above-mentioned second blowing cores 61 are provided, and the plurality of second blowing cores 61 are installed on the second blowing core plate 62 and move up and down under the drive of the second blowing core plate driving member 66, and the blowing and cleaning of multiple bottles can be completed at one time.

[0060] On the basis of the above structure, the turntable 12 can drive the die orifice 20 to rotate to different stations, and the forming action has high continuity.

[0061] Furthermore, a turntable frame 11 and a turntable frame driving member 13 can be provided on the machine body 10. The turntable frame 11 is installed on the machine body 10, and the turntable frame 11 can move along the height direction of the machine body 10; the turntable frame driving member 13 can drive the turntable frame 11 to move; the turntable 12 is pivotally connected to the turntable frame 11.

[0062] In this way, the turntable rack driving member 13 can drive the turntable rack 11 to move up and down, and at the same time drive the turntable 12 on the turntable rack 11 to move up and down, thereby driving a plurality of die heads 20 to move up and down simultaneously, and performing mold opening or mold closing on the corresponding mold above the die head 20. Each device corresponding to the core injection 32, pre-blowing core 43, first blowing core 52 or second blowing core 61 arranged below the die head 20 can be driven separately. That is, the up and down movement of the die head 20 is consistent, and the forming actions of each station can be independent, with high forming and cleaning efficiency.

[0063] Further, an installation groove is provided at the bottom end of the injection mold, and an injection cavity mold is provided in the installation groove. Specifically, an injection cavity is formed in the injection cavity mold. In this way, the injection cavity mold can be assembled in the injection mold, and the injection cavity mold is communicated with the injection channel in the injection mold. The injection cavity mold can be disassembled and assembled, which is convenient for later disassembly and cleaning. In addition, a plurality of injection cavity molds are assembled in the installation groove, preventing the injection cavity mold from protruding from the bottom end surface of the injection mold and interfering with the end surface of the die plate, reducing the mold closing gap and achieving better forming effect.

[0064] Further, a heating component is provided in the pre-blowing mold, and the heating component is used to heat the pre-blowing cavity. In this way, during the pre-blowing forming process, the heating component can heat the pre-blowing formed preform, keeping the preform at a certain uniform temperature, preventing the pre-blowing formed preform from collapsing when moving to the next station, and facilitating later forming.

[0065] Further, a guiding plate can be connected between the two demolding inserts. First guiding columns are provided on both sides of the guiding plate. A connecting piece can be connected between the bottom end of the guiding plate and the second blowing core plate. One end of the first guiding column is connected to the second blowing core plate, and the other end of the first guiding column movably passes through the guiding plate and is connected to the demolding plate. The above-mentioned demolding plate driving member can drive the guiding plate to move.

[0066] In this way, when performing the blowing and cleaning operation of the blowing core, the demolding plate driving member can drive the guiding plate to move up and down. The up and down movement of the guiding plate can guide the second blowing core plate to move up and down. During the up and down movement, the first guiding column can be slidably matched with the above-mentioned demolding plate to guide the second blowing core plate to move relatively up and down, and the movement structure is stable.

[0067] Although only some components and embodiments of the present application have been illustrated and described, many modifications and changes (e.g., changes in the size, dimensions, structure, shape and proportion, installation arrangement, material use, color, orientation, etc. of each element) can be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0068] Finally, it should be noted that the above embodiments are only the preferred embodiments of the present utility model, and the scope of protection of the present utility model cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A plastic container forming device, characterized in that, it includes, a body, on which there are an injection molding station, a preforming station and a forming station; a die head, which is installed on the body and can move to the injection molding station, the preforming station and the forming station in sequence; an injection molding device, which is arranged at the injection molding station and is used to cooperate with the die head to injection mold a preform with the bottle mouth facing downwards at the top of the die head; a preforming device, which is arranged at the preforming station and is used to cooperate with the die head to pre-blow mold the preform with the bottle mouth facing downwards injection molded at the top of the die head; a forming device, which is arranged at the forming station and is used to cooperate with the die head to blow mold the preform with the bottle mouth facing downwards pre-blown at the top of the die head to form a bottle body; a cleaning and bottle taking station and a blowing cleaning device are arranged on the body, and the blowing cleaning device is arranged at the cleaning and bottle taking station and is used to cooperate with the die head to blow clean and take the bottle body with the bottle mouth facing downwards blow molded at the top of the die head.

2. The plastic container forming device according to claim 1, characterized in that, the injection molding device includes an injection cavity mold and an injection core. The injection cavity mold is arranged at the top of the body and above the die head, and an injection cavity is provided at the bottom of the injection cavity mold; the die head can move closer to or away from the injection cavity mold along the height direction of the body, and the die head is used to penetrate into the injection cavity after moving closer to the injection cavity mold; the injection core is arranged on the body and below the die head; the injection core can move closer to or away from the die head along the height direction of the body; the injection core is used to penetrate into the die head and extend into the injection cavity after moving closer to the die head.

3. The plastic container forming device according to claim 1, characterized in that, the preforming device includes a pre-blow mold and a pre-blow core. The pre-blow mold is arranged at the top of the body and above the die head, and a pre-blow cavity is provided at the bottom of the pre-blow mold; the die head can move closer to or away from the pre-blow mold along the height direction of the body; the die head is used to extend into the pre-blow cavity after moving closer to the pre-blow mold; the pre-blow core is installed on the body and below the die head; the pre-blow core can move closer to or away from the die head; the pre-blow core is used to extend out of the die head and penetrate into the pre-blow cavity after moving closer to the die head; the pre-blow core is used to blow air after penetrating into the pre-blow cavity.

4. The plastic container forming device according to claim 1, characterized in that, The forming device includes a blow mold and a first blowing core. The blow mold is provided at the top of the machine body and above the die head. A forming cavity is provided at the bottom of the blow mold. The die head can move closer to or away from the blow mold along the height direction of the machine body. The die head is used to extend into the forming cavity after moving closer to the blow mold. The first blowing core is installed on the machine body and below the die head. The first blowing core can move closer to or away from the die head. The first blowing core is used to extend out of the die head and penetrate into the forming cavity after moving closer to the die head. The first blowing core is used to blow air after penetrating into the forming cavity. A stretching rod is penetrated in the first blowing core. The stretching rod is used to stretch the preform when the first blowing core penetrates into the forming cavity.

5. The plastic container forming device according to claim 4, wherein, a stretching moving plate and a stretching moving plate driving member are provided on the machine body. The stretching moving plate is provided below the first blowing core. The stretching rod is installed on the stretching moving plate. The stretching moving plate driving member is used to drive the stretching moving plate to move along the height direction of the machine body.

6. The plastic container forming device according to claim 1, wherein, the blowing and cleaning device includes a second blowing core. The second blowing core is provided on the machine body and below the die head. The second blowing core can move closer to or away from the die head along the height direction of the machine body. The second blowing core is used to penetrate out of the die head and penetrate into the bottle body after moving closer to the die head. The second blowing core is used to introduce gas into the bottle body to blow and clean the bottle body.

7. The plastic container forming device according to claim 6, wherein, the blowing and cleaning device further includes a die head opening and closing assembly. The die head opening and closing assembly is installed on the machine body and can move closer to or away from the die head along the height direction of the machine body. The die head opening and closing assembly is used to open the die head to separate the bottle mouth from the die head after moving away from the die head. The die head opening and closing assembly includes a stripping plate, a stripping insert and a stripping plate driving member. A positioning socket is provided on the die head. The stripping insert is installed on the stripping frame moving plate. The stripping plate driving member is used to drive the stripping plate to move along the height direction of the machine body so that the stripping insert is inserted into the positioning socket.

8. The plastic container forming device according to any one of claims 1-7, wherein, a turntable is provided on the machine body. The turntable is pivotally connected to the machine body. A plurality of die heads are provided on the turntable. The injection molding device, the preforming device and the forming device are sequentially arranged at intervals in the rotation direction of the turntable.

9. The plastic container forming device according to claim 8, wherein, a turntable frame and a turntable frame driving member are provided on the machine body. The turntable frame is installed on the machine body and can move along the height direction of the machine body. The turntable frame driving member is used to drive the turntable frame to move. The turntable is pivotally connected to the turntable frame.

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