Continuous injection molding device and plastic bottle forming equipment

Abstract

The utility model discloses a continuous injection molding device and plastic bottle forming equipment, and belongs to the technical field of plastic bottle production, the continuous injection molding device comprises a plasticizing injection device, a plurality of rows of bottle preform preparation devices are connected behind the plasticizing injection device, the continuous injection molding device further comprises a flow dividing device, the shunting device comprises a communicating header pipe connected with an outlet of the plasticizing injection device, a plurality of communicating branch pipes connected with the communicating header pipe, and a switch assembly used for conducting the communicating branch pipes, and the communicating branch pipes are connected with the multiple rows of bottle preform preparation devices in a one-to-one correspondence mode. According to the utility model, continuous injection molding can be realized, overlong-time neutral gear is avoided, tighter continuous work is realized, and the production efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bottle production, in particular to a continuous injection molding device. In addition, the utility model also relates to a plastic bottle molding device comprising the continuous injection molding device. Background Art

[0002] Plastic bottles are a common container with a very large demand and are used in a wide range of applications, such as food and beverages, medical containers, medicine bottles, seasoning containers, etc.

[0003] There are two production processes for plastic bottles: a two-step method (more commonly used in the early stages of industry development) and a one-step method. In recent years, the one-step method has been increasingly recognized by the market. For example, a Chinese patent with patent application number 202210194038.1 discloses a linear injection-blow-fill-seal integrated plastic bottle packaging equipment with high integration and high energy-saving effects.

[0004] However, in actual application, it was found that the production capacity of the above equipment was difficult to further increase. The main problem was that it was impossible to realize continuous injection molding of multiple rows of bottle preforms. This was because it was difficult to seamlessly connect the injection molding and preform retrieval processes of the bottle preform preparation devices in each row, and there was a long working time gap, which resulted in the inability to connect the subsequent processes to carry out continuous and efficient production of multiple batches. Utility Model Content

[0005] The utility model provides a continuous injection molding device to solve the technical problem that the existing equipment cannot realize the continuous injection molding of multiple rows of bottle embryos.

[0006] At the same time, the utility model also provides a plastic bottle forming device comprising the above-mentioned continuous injection molding device.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A continuous injection molding device, comprising a plasticizing and injection molding device, wherein the plasticizing and injection molding device is connected to a multi-row bottle embryo preparation device, and the continuous injection molding device further comprises:

[0009] The flow dividing device comprises a connecting main pipe connected to the outlet of the plasticizing injection device, a plurality of connecting branch pipes respectively connected to the connecting main pipe, and a switch assembly for conducting each connecting branch pipe, and the plurality of connecting branch pipes are connected to the plurality of rows of preform preparation devices in a one-to-one correspondence.

[0010] Furthermore, the first end of the connecting branch pipe is connected to the connecting main pipe, and the second end of the connecting branch pipe is connected to a plastic injection cylinder, and the plastic injection cylinder is used to inject plasticized material into the preform preparation device.

[0011] Furthermore, the switch assembly includes a rotary valve or a solenoid valve for switching each connecting branch pipe.

[0012] Furthermore, the continuous injection molding device also includes a temperature-adjusting mold-out device, which is connected to the preform preparation device and is used to heat and keep the preforms prepared by the preform preparation device warm and drive the preforms to be transported to the next process.

[0013] Furthermore, the temperature regulating demolding device includes a temperature regulating mechanism and a transfer mechanism connected to the temperature regulating mechanism and used to drive the temperature regulating mechanism to move; the temperature regulating mechanism includes a first temperature regulating frame and a second temperature regulating frame arranged relatively to each other, and a driving component used to drive the first temperature regulating frame and the second temperature regulating frame to move closer to or away from each other, and the first temperature regulating frame and the second temperature regulating frame are used to clamp and fix the bottle blank to each other.

[0014] Furthermore, a plurality of limiting grooves are spaced apart on the opposite side walls of the first temperature regulating frame and the second temperature regulating frame, and the limiting grooves on the first temperature regulating frame and the second temperature regulating frame are combined in a one-to-one correspondence to form a plurality of limiting cavities, and the limiting cavities are adapted to the bottle preform and are used to clamp and fix the bottle preform.

[0015] Furthermore, a plurality of clamping plates are provided on the opposite side walls of the first temperature regulating frame and the second temperature regulating frame, wherein the clamping plates are arc-shaped plate-like structures, and the outwardly convex side of the clamping plates is connected to the side wall of the first temperature regulating frame or the second temperature regulating frame through a spring, and the clamping plates on the first temperature regulating frame and the second temperature regulating frame are combined in a one-to-one correspondence to form a plurality of limiting cavities, and the limiting cavities are adapted to the bottle preform and are used to clamp and fix the bottle preform.

[0016] Furthermore, the driving assembly includes a cylinder arranged beside the first temperature regulating frame and / or the second temperature regulating frame, and the cylinder is used to drive the first temperature regulating frame and / or the second temperature regulating frame to move to form the limiting cavity or open the limiting cavity.

[0017] Furthermore, a thermal insulation pad and a heating component connected to the thermal insulation pad are provided in the first temperature control frame and / or the second temperature control frame, and the heating component includes a heating tube or a heating wire. The thermal insulation pad is arranged on the inner wall of the first temperature control frame and the second temperature control frame, and the heating tube or the heating wire is arranged in the first temperature control frame and the second temperature control frame.

[0018] According to another aspect of the utility model, a plastic bottle forming device is also provided, which includes the above-mentioned continuous injection molding device, and a handover station, a pre-blowing device, a bottle blowing device and a bottle embryo transmission device connected in sequence, and the bottle blowing device is connected to the bottle embryo preparation device.

[0019] The utility model has the following beneficial effects:

[0020] The utility model connects multiple rows of preform preparation devices with the plasticizing injection device through a flow dividing device, wherein a connecting main pipe of the flow dividing device is connected to the plasticizing injection device, and a connecting branch pipe divides the connecting main pipe and connects with each row of preform preparation devices, and at the same time, each connecting branch pipe is opened or closed by a switch component, so that the plasticizing injection device sequentially performs injection molding on each row of preform preparation devices, and after each row of preform preparation devices completes taking out the preforms, injection molding can be performed in time, so that continuous injection molding is realized, too long time gap is avoided, more closely continuous work is realized, and production efficiency is further improved.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, the present invention also has other purposes, features and advantages. The present invention will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the continuous injection molding device of the preferred embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of a bottle blowing production line according to a preferred embodiment of the utility model.

[0025] Figure 3 It is a top view schematic diagram of a bottle blowing production line according to a preferred embodiment of the utility model.

[0026] Figure 4 It is a structural schematic diagram of the diversion device of the preferred embodiment of the utility model.

[0027] Figure 5 It is a schematic diagram of the overall structure of a bottle blowing production line according to another preferred embodiment of the utility model.

[0028] Legend: 100, plasticizing and injection device; 200, preform preparation device; 300, transfer station; 400, temperature-adjusting and demoulding device; 401, servo motor; 402, lead screw; 403, mounting plate; 404, guide rail; 405, temperature-adjusting mechanism; 406, cylinder; 407, heating tube; 408, first temperature-adjusting frame; 409, second temperature-adjusting frame; 410, tee; 411, switch assembly; 412, first rubber cylinder; 413, second rubber cylinder; 414, push rod; 500, pre-blowing device; 600, bottle blowing device; 700, filling device; 800, sealing device; 900, preform transmission device. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0030] Please refer to the attached drawing, which is a structural schematic diagram of a preferred embodiment of a continuous injection molding device and a plastic bottle molding equipment provided by the utility model.

[0031] A continuous injection molding device includes a plasticizing injection molding device 100, wherein the plasticizing injection molding device 100 is connected to a multi-row bottle embryo preparation device 200, and the continuous injection molding device further includes:

[0032] The flow dividing device includes a connecting main pipe connected to the outlet of the plasticizing injection device 100, a plurality of connecting branch pipes respectively connected to the connecting main pipe, and a switch assembly 411 for conducting each connecting branch pipe, and the plurality of connecting branch pipes are connected to the multi-row preform preparation devices 200 in a one-to-one correspondence.

[0033] The utility model connects multiple rows of preform preparation devices 200 with the plasticizing injection device 100 through a flow dividing device, wherein the connecting main pipe of the flow dividing device is connected to the plasticizing injection device 100, and the connecting branch pipe divides the connecting main pipe and connects with each row of preform preparation devices 200, and at the same time, each connecting branch pipe is opened or closed by a switch component 411, so that the plasticizing injection device 100 can perform injection molding to each row of preform preparation devices 200 in turn, and after each row of preform preparation devices 200 completes taking the preforms, injection molding can be performed in time, so that continuous injection molding is realized, too long time gap is avoided, more closely continuous work is realized, and production efficiency is further improved.

[0034] Preferably, please refer to Figure 1 and Figure 3 As shown, the first end of the connecting branch pipe is connected to the connecting main pipe, and the second end of the connecting branch pipe is connected to the injection cylinder, and the injection cylinder is used to inject plasticized material into the preform preparation device 200.

[0035] It is understandable that the split flow device can achieve a more closely continuous operation and further improve the production efficiency. Figure 5, a plasticizing screw of the plasticizing injection device 100 is continuously plasticized and connected to the plasticizing injection device 100 by a tee 410. The tee 410 has two connecting branches, which are respectively connected to the first injection tube and the second injection tube. The first injection tube and the second injection tube are respectively connected to a row of bottle embryo preparation devices 200. The switch component 411 controls the opening and closing of the two connecting branches: assuming that the connecting branch of the first injection tube is opened first, the plasticized material is first injected into the first injection tube. When the first injection tube is full, the switch component 411 closes the connecting branch of the first injection tube and opens the connecting branch of the second injection tube. At this time, the first injection tube can be injected (the push rod 414 pushes to inject) and maintain pressure. When the pressure maintenance is completed, the second injection tube is also filled. The switch component 411 closes the connecting branch of the second injection tube and opens the connecting branch of the first injection tube. The first injection tube starts to feed the material, and the second injection tube can start to inject, and so on alternately. Cooperating with the temperature-adjusting demoulding device 400 and the robot arm to realize embryo discharging and embryo taking to the next process, staggered work can be realized, that is, the time for injection molding and embryo discharging and embryo taking is equal, truly realizing seamless continuous production.

[0036] Preferably, please refer to Figure 3 As shown, the switch assembly 411 includes a rotary valve or a solenoid valve for opening and closing each connecting branch. It is understandable that the rotary valve or the solenoid valve can be used to open each connecting branch to achieve the function of alternating injection. It should be noted that the switch assembly 411 can control the switch state through a programmable controller to accurately control the opening and closing time of each connecting branch.

[0037] Preferably, please refer to Figure 1 and Figure 3 As shown, the continuous injection molding device also includes a temperature-adjusting mold-out device 400, which is connected to the preform preparation device 200, and is used to heat and keep the preforms prepared by the preform preparation device 200 and drive the preforms to be transported to the next process.

[0038] It can be understood that the temperature-adjusting demolding device 400 can realize the complete linear motion of the preform delivery process, thus avoiding the preform being exposed to the air for too long and losing too much heat due to deviation or turning routes, greatly improving the efficiency of delivery, avoiding additional heat supplementation processes, and further improving production capacity.

[0039] Preferably, please refer to Figure 1 and Figure 3As shown, the temperature regulating demoulding device 400 includes a temperature regulating mechanism 405 and a transfer mechanism connected to the temperature regulating mechanism 405 and used to drive the temperature regulating mechanism 405 to move; the temperature regulating mechanism 405 includes a first temperature regulating frame 408 and a second temperature regulating frame 409 that are arranged opposite to each other, and a driving component for driving the first temperature regulating frame 408 and the second temperature regulating frame 409 to move closer to or away from each other, and the first temperature regulating frame 408 and the second temperature regulating frame 409 are used to clamp and fix the bottle blank to each other.

[0040] It is understandable that the temperature regulating mechanism 405 can be driven by the transfer mechanism to perform linear motion, and the first temperature regulating frame 408 and the second temperature regulating frame 409 of the temperature regulating mechanism can be relatively displaced to achieve a state similar to opening and closing, and can clamp or release the bottle preform, so that the bottle preform is exposed in the open state, which is convenient for the bottle preform to be quickly taken out by the robot and transferred to the next process in a straight line, without the need to first clamp the bottle preform to rise, then offset and translate, and finally move down to place the bottle preform when taking the bottle, so that a large amount of displacement distance can be reduced and the exposure time of the bottle preform can be shortened. At the same time, the temperature regulating mechanism 405 of the temperature-controlled ejection device 400 can also heat the bottle preform in the process of linearly transporting the bottle preform, ensuring that the temperature of the bottle preform is within an appropriate range, which is beneficial to the quality of subsequent bottle blowing.

[0041] Preferably, please refer to Figure 1 and Figure 3 As shown, a plurality of limiting grooves are spaced apart on the opposite side walls of the first temperature regulating frame 408 and the second temperature regulating frame 409. The limiting grooves on the first temperature regulating frame 408 and the second temperature regulating frame 409 correspond to each other and are combined to form a plurality of limiting cavities, which are adapted to the preform and used to clamp and fix the preform.

[0042] It can be understood that the first temperature adjustment frame 408 and the second temperature adjustment frame 409 are provided with corresponding limiting grooves, and the limiting grooves on both sides are combined to form a limiting cavity to carry and limit the preform, and the first temperature adjustment frame 408 and the second temperature adjustment frame 409 can be relatively displaced to achieve a similar opening effect so that the preform is no longer limited to facilitate the rapid removal and transfer of the preform. Due to the linear motion mode and the openable function of the temperature adjustment mechanism 405, it is ensured that the preform does not need to go through the steps of taking the preform up, moving horizontally, and then moving downward when the preform is transported linearly, and the vertical displacement route is cancelled. Only the fastest translation movement is required to complete the transportation, which effectively shortens the transportation distance and transportation time.

[0043] Preferably, please refer to Figure 1 and Figure 3As shown, a plurality of clamping plates are arranged on the opposite side walls of the first temperature regulating frame 408 and the second temperature regulating frame 409, and the clamping plates are arc-shaped plate-like structures, and the convex side of the clamping plates is connected to the side wall of the first temperature regulating frame 408 or the second temperature regulating frame 409 through a spring, and the clamping plates on the first temperature regulating frame 408 and the second temperature regulating frame 409 are combined in a one-to-one correspondence to form a plurality of limiting cavities, and the limiting cavities are adapted to the bottle preforms and are used to clamp and fix the bottle preforms.

[0044] It is understandable that the arc-shaped clamping plates on the first temperature adjustment frame 408 and the second temperature adjustment frame 409 can also form a limiting cavity adapted to the bottle preform, and the bottle preform can be clamped or loosened through the limiting cavity. The clamping plates are installed by springs, and the springs can also play a buffering role on the clamping plates, reducing the excessive impact of the clamping plates on the bottle preforms during the process of clamping the bottle preforms, and avoiding damage to the bottle preforms caused by the deviation of the clamping position. In addition, the arc-shaped clamping plates can also meet the clamping requirements of bottle preforms with more diameters, because only part of the arc surface of the clamping plates needs to contact the bottle preforms to achieve the clamping function.

[0045] Preferably, please refer to Figure 1 and Figure 3 As shown, the driving assembly includes a cylinder 406 arranged next to the first temperature adjustment frame 408 and / or the second temperature adjustment frame 409, and the cylinder 406 is used to drive the first temperature adjustment frame 408 and / or the second temperature adjustment frame 409 to move to form the limiting cavity or open the limiting cavity.

[0046] It is understandable that the cylinder 406 can drive the first temperature adjustment frame 408 and / or the second temperature adjustment frame 409 to move, so as to adjust the distance between the first temperature adjustment frame 408 and the second temperature adjustment frame 409. It should be noted that the cylinder 406 can be connected to one of the first temperature adjustment frame 408 and the second temperature adjustment frame 409, or can be connected to both of them at the same time, and can achieve the same combination to form or open the limiting cavity.

[0047] Optionally, the driving assembly includes a baffle plate arranged at the bottom or top of the first temperature regulating frame 408 and / or the second temperature regulating frame 409, a baffle rod arranged in the linear motion direction of the first temperature regulating frame 408 and / or the second temperature regulating frame 409, and a spring connecting the first temperature regulating frame 408 and the second temperature regulating frame 409, the baffle rod is arranged correspondingly to the baffle plate, the baffle plate is arranged obliquely or one side of the baffle plate is an inclined surface, when the first temperature regulating frame 408 and the second temperature regulating frame 409 move along a straight line, when the baffle plate touches the baffle rod, the inclined baffle plate or the inclined surface of the baffle plate pushes the first temperature regulating frame 408 and / or the second temperature regulating frame 409 away from each other during the sliding contact with the baffle rod, so that the preform is exposed from the limiting cavity. Since the temperature regulating mechanism 405 reciprocates along a straight line, when the baffle plate is separated from the baffle rod, the first temperature regulating frame 408 and the second temperature regulating frame 409 can be tightened by the spring to form a heat preservation cavity. In this way, the first temperature regulating frame 408 and the second temperature regulating frame 409 can be opened without using active driving devices such as motors or linear cylinders, which is beneficial to saving energy and reducing costs.

[0048] Preferably, a thermal insulation pad and a heating component connected to the thermal insulation pad are provided in the first temperature control frame 408 and / or the second temperature control frame 409, and the heating component includes a heating tube 407 or a heating wire, and the thermal insulation pad is arranged on the inner wall of the first temperature control frame 408 and the second temperature control frame 409, and the heating tube 407 or the heating wire is arranged in the first temperature control frame 408 and the second temperature control frame 409.

[0049] It is understandable that the heating component can maintain the overall temperature of the first temperature regulating frame 408 and the second temperature regulating frame 409, so that the first temperature regulating frame 408 and the second temperature regulating frame 409 will not quickly conduct heat transfer to the temperature of the preform when clamping and limiting the preform, causing the preform to cool down quickly and affecting the quality of subsequent bottle blowing. It should be noted that the heating component can use a heating tube 407 or a heating wire, and the heating tube 407 or the heating wire can be arranged between the heat insulation pad and the inner wall of the first temperature regulating frame 408 and / or the second temperature regulating frame 409 to ensure that the temperature of the inner wall of the first temperature regulating frame 408 and / or the second temperature regulating frame 409 on the side in contact with the preform is continuously within an appropriate range.

[0050] According to another aspect of the utility model, a plastic bottle forming device is also provided, which includes the above-mentioned continuous injection molding device, and the handover station 300, the pre-blowing device 500, the bottle blowing device 600 and the bottle embryo transmission device 900 connected in sequence, and the bottle blowing device 600 is connected to the bottle embryo preparation device 200. It should be noted that the bottle embryo preparation device 200 includes a bottle embryo mold, and the bottle embryo mold and the plasticizing injection device 100 are both existing technologies and are not described here. The above devices are supported and installed by a frame, and the frame includes a protective cover to protect each device to form a safe production environment that is not polluted by the outside world.

[0051] It can be understood that the plastic bottle molding equipment of the present invention is in the form of an injection-blowing machine, which is a highly integrated device, and each device is arranged in a linear manner. Compared with the one-step bottle making method currently on the market, which uses a disc structure and it is difficult to increase the output by increasing the number of cavities, the present invention adopts a linear layout and is not limited to this. On the one hand, the number of cavities can be increased in the linear direction, and on the other hand, the number of rows can be increased to double the number of cavities.

[0052] Please note that, please refer to Figure 5 If the handover time is not long, the handover station 300 between the preform preparation device 200 and the bottle blowing device 600 can be cancelled as needed; in addition, the pre-blowing device 500 set in front of the bottle blowing device 600 can be cancelled as needed (for example, some products do not need pre-blowing), and each device can be arranged flexibly. In addition, the bottle blowing device 600 can also be connected with a filling device 700 and a sealing device 800 to form an injection, blowing, filling and sealing integrated machine, achieving a higher degree of integration, realizing more functions, and further improving production efficiency.

[0053] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0054] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection of the utility model.

Claims

1. A continuous injection molding device, comprising a plasticizing injection molding device (100), wherein the plasticizing injection molding device (100) is connected to a multi-row preform preparation device (200), characterized in that: The continuous injection molding device also includes: A flow dividing device, the flow dividing device comprising a connecting main pipe connected to the outlet of the plasticizing injection device (100), a plurality of connecting branch pipes respectively connected to the connecting main pipe, and a switch assembly (411) for conducting each connecting branch pipe, the plurality of connecting branch pipes being connected to a plurality of rows of preform preparation devices (200) in a one-to-one correspondence, the first end of the connecting branch pipe being connected to the connecting main pipe, the second end of the connecting branch pipe being connected to a plasticizing injection cylinder, the plasticizing injection cylinder being used for injecting plasticized material into the preform preparation device (200).

2. A continuous injection molding device according to claim 1, characterized in that: The switch assembly (411) comprises a rotary valve or a solenoid valve for switching each connecting branch pipe.

3. A continuous injection molding device according to claim 1, characterized in that: The continuous injection molding device further comprises a temperature-adjusting and demolding device (400), the temperature-adjusting and demolding device (400) being connected to the preform preparation device (200), the temperature-adjusting and demolding device (400) being used to heat and keep the preforms prepared by the preform preparation device (200) warm and drive the preforms to be transported to the next process.

4. A continuous injection molding device according to claim 3, characterized in that: The temperature regulating demoulding device (400) comprises a temperature regulating mechanism (405) and a transfer mechanism connected to the temperature regulating mechanism (405) and used to drive the temperature regulating mechanism (405) to move; the temperature regulating mechanism (405) comprises a first temperature regulating frame (408) and a second temperature regulating frame (409) arranged opposite to each other, and a driving component used to drive the first temperature regulating frame (408) and the second temperature regulating frame (409) to move closer to each other or away from each other, and the first temperature regulating frame (408) and the second temperature regulating frame (409) are used to clamp and fix the preform.

5. A continuous injection molding device according to claim 4, characterized in that: A plurality of limiting grooves are spaced apart on opposite side walls of the first temperature adjustment frame (408) and the second temperature adjustment frame (409); the limiting grooves on the first temperature adjustment frame (408) and the second temperature adjustment frame (409) are combined in a one-to-one correspondence to form a plurality of limiting cavities; the limiting cavities are adapted to the bottle preform and are used to clamp and fix the bottle preform.

6. A continuous injection molding device according to claim 5, characterized in that: A plurality of clamping plates are arranged on opposite side walls of the first temperature regulating frame (408) and the second temperature regulating frame (409), wherein the clamping plates are arc-shaped plate-like structures, and a convex side of the clamping plates is connected to the side wall of the first temperature regulating frame (408) or the second temperature regulating frame (409) through a spring. The clamping plates on the first temperature regulating frame (408) and the second temperature regulating frame (409) are combined in a one-to-one correspondence to form a plurality of limiting cavities, and the limiting cavities are adapted to the bottle preform and are used to clamp and fix the bottle preform.

7. A continuous injection molding device according to claim 5, characterized in that: The driving assembly comprises a cylinder (406) arranged beside the first temperature adjustment frame (408) and / or the second temperature adjustment frame (409), and the cylinder (406) is used to drive the first temperature adjustment frame (408) and / or the second temperature adjustment frame (409) to move so as to form the limiting cavity or open the limiting cavity.

8. A continuous injection molding device according to claim 4, characterized in that: A thermal insulation pad and a heating component connected to the thermal insulation pad are arranged in the first temperature control frame (408) and / or the second temperature control frame (409), and the heating component includes a heating tube (407) or a heating wire. The thermal insulation pad is arranged on the inner wall of the first temperature control frame (408) and the second temperature control frame (409), and the heating tube (407) or the heating wire is arranged in the first temperature control frame (408) and the second temperature control frame (409).

9. A plastic bottle forming device, characterized in that: The invention comprises a continuous injection molding device as claimed in any one of claims 1 to 8, and a handover station (300), a pre-blowing device (500), a bottle blowing device (600) and a preform transmission device (900) connected in sequence, wherein the handover station (300) is connected to the preform preparation device (200).

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