A molding cavity unit for processing plastic containers and a manufacturing method thereof

Abstract

The present invention discloses a molding cavity unit and manufacturing method for processing plastic containers. The unit comprises an upper mold and a lower mold for processing plastic containers. The upper mold is positioned above the lower mold, and a receiving tray is fixedly inserted through the top center of the upper mold. The present invention relates to the field of plastic container processing technology. The molding cavity unit and manufacturing method for processing plastic containers utilize the coordination between a micro-servo motor, a spur gear, a waste material removal mechanism, and a lower slide. The micro-servo motor is activated to drive the spur gear and the adjustment tray to rotate, thereby bringing the left and right cutting blade assemblies closer together. This automatically separates the casting waste in the square through-cavity from the plastic product in the mold cavity, thereby improving production efficiency. Through the coordination between a fluororubber hose, a cutting blade body, a stopper, and a vent hole, air pressure is utilized to automatically and quickly eject the separated casting waste from the casting short pipe, reducing subsequent workload.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic container processing, in particular to a molding cavity unit for processing plastic containers and a manufacturing method thereof. Background Art

[0002] Plastic containers are containers made of plastic materials for storing, transporting or packaging items. Plastic containers are widely used in the food industry, pharmaceutical industry, cosmetics industry and various industrial and household products.

[0003] Referring to a plastic container processing mold with Chinese patent publication number CN215359693U, the mold groove is slidably installed on the slide groove through a slider, and cooperates with a spiral rod and a drive motor to realize the rapid pulling of the mold groove into and out of the power box, so that the molding mold can be quickly demolded, and a fixed-size mold groove is used to mold the plastic product, so that the thickness of the molded plastic product is more uniform, thereby improving the qualified rate of the finished plastic product.

[0004] Referring to a plastic container molding mold that is easy to demold with Chinese patent publication number CN216578777U, a demolding mechanism is added to the structure of the molding mold. When producing plastic containers, the demolding mechanism is used to demold the product, thereby improving production efficiency and making the molding mold more convenient to use.

[0005] A comprehensive analysis of the above reference patents reveals the following defects:

[0006] The existing molding cavity unit and manufacturing method for processing plastic containers inject raw materials into the mold cavity through the pouring end thereon, which will eventually produce pouring waste that remains in the pouring end. It is impossible to automatically cut and separate the pouring waste from the plastic product in the mold cavity and quickly push out the pouring end, which increases the workload in the later stage. Therefore, it is necessary to provide a molding cavity unit and manufacturing method for processing plastic containers to solve the above technical problems. Summary of the Invention

[0007] In response to the shortcomings of the existing technology, the present invention provides a molding cavity unit and a manufacturing method for processing plastic containers, which solves the problem that when raw materials are injected into the mold cavity through the pouring end on the molding cavity unit, pouring waste will eventually remain in the pouring end, and the pouring waste cannot be automatically cut and separated from the plastic products in the mold cavity and quickly pushed out of the pouring end, which increases the workload in the later stage.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a molding cavity unit for processing plastic containers, comprising an upper mold and a lower mold for processing plastic containers, the upper mold being located above the lower mold, a receiving tray being fixedly passed through the middle of the top of the upper mold, a pouring end mechanism being fixedly passed through the middle of the receiving tray, a motor chamber being fixedly provided on the right side of the top of the receiving tray, a micro servo motor being fixedly provided at the bottom of the inner cavity of the motor chamber, a spur gear being fixedly provided at the output end of the micro servo motor passing through the top of the receiving tray, a waste The waste material cutting mechanism has sliding grooves on both sides of the left and right sides of the bottom of the inner cavity of the accommodating plate. The waste material cutting mechanism includes several T-shaped slide bars, and an adjusting plate is fixedly arranged between the bottoms of several of the T-shaped slide bars. A plurality of teeth are evenly fixedly arranged on the side walls of the adjusting plate. Arc-shaped limiting grooves are provided on both sides of the top of the adjusting plate. Connecting protrusions are slidably passed through the interiors of the two arc-shaped limiting grooves. Cutting knife assemblies are fixedly arranged at the bottoms of the two connecting protrusions. Lower sliders are fixedly arranged at the bottoms of the two cutting knife assemblies, and the lower sliders are slidably connected to the interiors of the corresponding sliding grooves.

[0009] Preferably, the pouring end mechanism includes a pouring short tube, the bottom of the pouring short tube is fixedly passed through the interior of the accommodating plate, a square through cavity is opened inside the pouring short tube, a spiral cavity is opened on the side wall of the pouring short tube, an air intake pipe connected to the spiral cavity is fixedly provided at the lower front end of the pouring short tube, a first solenoid valve is fixedly provided at the rear end of the air intake pipe, and the bottom of the air intake pipe is fixedly connected to the bronchus.

[0010] Preferably, the bottom of the bronchial tube is fixedly passed through the top of the upper mold and the front wall of the accommodating plate, a second solenoid valve is fixedly provided at the lower part of the bronchial tube, fluororubber hoses are fixedly connected to the left and right sides of the rear end of the bottom of the bronchial tube, a heat-conducting inner sleeve is fixedly provided on the inner wall of the square through cavity, an exhaust pipe connected to the spiral cavity is fixedly provided at the upper part of the rear end of the casting short tube, and side grooves are provided on the left and right sides of the lower part of the square through cavity.

[0011] Preferably, the adjustment disk is rotatably sleeved on the outside of the casting short tube, a circle of annular groove is opened on the top of the inner cavity of the accommodating disk, the tops of several T-shaped sliding rods are slidably connected in the annular groove, and the two cutting knife assemblies slide through the interior of the corresponding side through grooves respectively.

[0012] Preferably, the cutting blade assembly includes a cutting blade body, a placement cavity is provided inside the cutting blade body on a side close to the casting short tube, and an air guide cavity is provided inside the placement cavity on a side away from the casting short tube.

[0013] Preferably, the front end of the cutting knife body is fixedly connected to the rear end of the corresponding fluororubber hose on the side away from the casting short tube, the placement cavity, the air guide cavity and the interior of the fluororubber hose are in a connected state, and several vertical rods are evenly slid through the top of the placement cavity.

[0014] Preferably, a stopper is fixedly provided on the top of each vertical rod, and a plurality of ventilation holes are provided on the top of the placement cavity and below each stopper.

[0015] Preferably, a horizontal connecting rod is fixedly arranged between the bottoms of the plurality of vertical rods, the top of the horizontal connecting rod is fixedly connected to the top wall of the placement cavity via a plurality of telescopic springs, and the plurality of telescopic springs and the plurality of vertical rods are interlaced with each other.

[0016] The present invention also provides a method for manufacturing a plastic container using a molding cavity unit, the specific method comprising the following steps:

[0017] Step 1: The molding cavity unit is used in conjunction with the injection molding mechanism. The upper mold and the lower mold are tightly fitted together by the force applied by the external hydraulic system. The injection molding mechanism is used to inject the molten plastic raw material into the internal mold cavities of the upper mold and the lower mold through the square through-cavity, so that the molten plastic raw material fully fills the internal mold cavities of the upper mold and the lower mold. When enough raw material is injected into the mold cavity, the excess raw material remains in the square through-cavity, and then the injection of raw material is immediately stopped. Then the plastic between the upper mold and the lower mold begins to cool and solidify;

[0018] Step 2: During the process, the first solenoid valve is opened, and the external air pump is used to input cold air into the spiral cavity through the air inlet pipe. The cold air passes through the spiral cavity and is finally discharged through the exhaust pipe. During the process, the cold air exchanges heat with the casting waste in the square cavity, so that the casting waste in the square cavity is quickly cooled and shaped. After a certain period of time, the micro servo motor is started to drive the spur gear to rotate. Since the spur gear is engaged with the teeth, the adjustment disk and the arc-shaped limit groove rotate accordingly. Under the push of the inner wall of the arc-shaped limit groove, the connecting convex rod and the cutting knife assembly move to the side close to the casting short pipe, and the lower slider slides inside the sliding groove. The left and right cutting knife assemblies approach each other until they touch, and then the micro servo motor stops working. During the process, the two cutting knife assemblies cut and separate the casting waste in the square cavity from the plastic products in the mold cavity;

[0019] Step 3. Close the first solenoid valve and open the second solenoid valve. The external air pump inputs cold air into the fluororubber hoses on the left and right sides through the air inlet pipe and the bronchial pipe, and then the gas enters the placement cavity. As the air pressure in the placement cavity increases, the block is pushed upward, and the cut and separated casting waste is also pushed upward a certain distance under the action of the block. The gas continues to be discharged through various vents, so that the air pressure at the bottom of the casting waste continues to increase. Under the action of air pressure, the casting waste is pushed upward, and the casting waste is automatically separated. Then close the second solenoid valve, and under the elastic action of the telescopic spring, the block returns to its original position. Then start the micro servo motor again to drive the spur gear to rotate in the opposite direction, reverse the adjusting disk, and drive the connecting convex rod and the cutting knife assembly to move to the side away from the casting short tube, so that the cutting knife assembly is separated from the square through cavity. When the plastic raw material in the mold cavity is completely cooled and solidified, the upper mold and the lower mold are separated, and the finished plastic container is taken out, and the manufacture of the plastic container is completed.

[0020] Preferably, the teeth on the right engage with the left side of the spur gear.

[0021] Beneficial effects

[0022] The present invention provides a molding cavity unit and a manufacturing method for processing plastic containers. Compared with the prior art, it has the following advantages:

[0023] 1. A molding cavity unit and manufacturing method for processing plastic containers. Through the interaction between a micro servo motor, a spur gear, a waste cutting mechanism, and a lower slide chute, the micro servo motor is activated to drive the spur gear and the adjustment disk to rotate, thereby moving the left and right cutting blade assemblies closer together, automatically cutting and separating the casting waste in the square through cavity from the plastic product in the mold cavity, thereby improving production efficiency.

[0024] 2. A molding cavity unit and manufacturing method for processing plastic containers. Through the mutual cooperation between the fluororubber hose, the cutting knife body, the block and the vent hole, the air pressure can automatically and quickly push the cast waste after cutting and separation from the casting short pipe, reducing the workload in the later stage.

[0025] 3. A molding cavity unit and manufacturing method for processing plastic containers. Through the interaction between the spiral cavity, the air inlet pipe and the exhaust pipe, cold air is introduced into the spiral cavity to exchange heat with the casting waste in the square cavity, so that the casting waste is quickly cooled and shaped so that it can be cut and separated from the plastic product in the mold cavity in time.

[0026] 4. A molding cavity unit and manufacturing method for processing plastic containers. The setting of the heat-conducting inner sleeve can quickly transfer the heat of the casting waste to the cold air in the spiral cavity, further improving the heat exchange efficiency and reducing energy waste. It has a simple structure but strong functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A perspective view of the present invention;

[0028] Figure 2 For the present invention Figure 1 A partial enlarged view of point A in the middle;

[0029] Figure 3 It is a partial cross-sectional view of the waste removal mechanism of the present invention in a non-working state;

[0030] Figure 4 It is a partial cross-sectional view of the waste removal mechanism of the present invention in a working state;

[0031] Figure 5 For the present invention Figure 3 A partial enlarged view of point B in the middle;

[0032] Figure 6 A top view of the waste removal mechanism of the present invention in a non-working state;

[0033] Figure 7 A top view of the waste removal mechanism of the present invention in a working state;

[0034] Figure 8 A top view of the cutting blade assembly of the present invention;

[0035] Figure 9 A top cross-sectional view of the receiving tray of the present invention;

[0036] Figure 10 A top view of the adjustment disk of the present invention;

[0037] Figure 11 is a front cross-sectional view of the cutting blade assembly of the present invention;

[0038] Figure 12 For the present invention Figure 11 A partial enlarged view of point C in the middle.

[0039] In the figure: 1. upper mold; 2. lower mold; 3. receiving plate; 4. pouring end mechanism; 41. pouring short tube; 42. square through cavity; 43. spiral cavity; 44. air inlet pipe; 45. first solenoid valve; 46. bronchial tube; 47. second solenoid valve; 48. heat-conducting inner sleeve; 49. exhaust pipe; 410. side through groove; 5. motor room; 6. micro servo motor; 7. spur gear; 8. waste cutting mechanism; 81. T-shaped slide bar; 82. adjusting plate; 83. teeth; 84. arc-shaped limit groove; 85. connecting protrusion; 86. cutting knife assembly; 861. cutting knife body; 862. placement cavity; 863. air guide cavity; 864. vertical rod; 865. block; 866. vent; 867. horizontal connecting rod; 868. telescopic spring; 87. lower slider; 9. lower slide groove; 10. fluororubber hose. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] The present invention provides two technical solutions:

[0042] like Figure 1 、 3 -6 shows a first embodiment: a molding cavity unit for processing plastic containers, comprising an upper mold 1 and a lower mold 2 for processing plastic containers, the upper mold 1 being located on the upper part of the lower mold 2, a receiving tray 3 being fixedly passed through the top middle of the upper mold 1, a pouring end mechanism 4 being fixedly passed through the middle of the receiving tray 3, a motor chamber 5 being fixedly provided on the top right side of the receiving tray 3, a micro servo motor 6 being fixedly provided on the bottom of the inner cavity of the motor chamber 5, a spur gear 7 being fixedly provided on the output end of the micro servo motor 6 passing through the top of the receiving tray 3, a waste cutting mechanism 8 being provided inside the receiving tray 3, There are sliding grooves 9 on both sides of the left and right sides of the bottom of the inner cavity. The waste cutting mechanism 8 includes several T-shaped slide bars 81. An adjusting disk 82 is fixedly arranged between the bottoms of the several T-shaped slide bars 81. A number of teeth 83 are evenly fixedly arranged on the side walls of the adjusting disk 82. Arc-shaped limit grooves 84 are provided on both sides of the top of the adjusting disk 82. The insides of the two arc-shaped limit grooves 84 are slidably penetrated by connecting protruding rods 85. The bottoms of the two connecting protruding rods 85 are fixedly provided with cutting knife assemblies 86. The bottoms of the two cutting knife assemblies 86 are fixedly provided with lower sliding blocks 87. The lower sliding blocks 87 are slidably connected to the insides of the corresponding sliding grooves 9.

[0043] Through the mutual cooperation among the micro servo motor 6, the spur gear 7, the waste cutting mechanism 8 and the lower slide chute 9, the micro servo motor 6 is started to drive the spur gear 7 and the adjustment disk 82 to rotate, so that the cutting knife assemblies 86 on the left and right sides are close to each other, and the casting waste in the square cavity 42 and the plastic products in the mold cavity are automatically cut and separated, thereby improving production efficiency.

[0044] like Figure 2 、 7-12 shows a second embodiment, which is mainly different from the first embodiment in that: a molding cavity unit for processing plastic containers, the pouring end mechanism 4 includes a pouring short tube 41, the bottom of the pouring short tube 41 is fixedly passed through the interior of the accommodating plate 3, a square through cavity 42 is opened inside the pouring short tube 41, a spiral cavity 43 is opened on the side wall of the pouring short tube 41, an air inlet pipe 44 connected to the spiral cavity 43 is fixedly provided at the lower front end of the pouring short tube 41, a first solenoid valve 45 is fixedly provided at the rear end of the air inlet pipe 44, and a branch valve 46 is fixedly connected to the bottom of the air inlet pipe 44. The tube 46 is characterized in that: the bottom of the bronchial tube 46 is fixedly passed through the top of the upper mold 1 and the front wall of the accommodating plate 3, the lower part of the bronchial tube 46 is fixedly provided with a second solenoid valve 47, the left and right sides of the bottom rear end of the bronchial tube 46 are fixedly connected with a fluororubber hose 10, the inner wall of the square through cavity 42 is fixedly provided with a heat-conducting inner sleeve 48, the upper part of the rear end of the casting short tube 41 is fixedly provided with an exhaust pipe 49 connected to the spiral cavity 43, the left and right sides of the lower part of the square through cavity 42 are provided with side grooves 410, the adjusting disk 82 is rotatably sleeved on the outside of the casting short tube 41, and the accommodating plate 3 is provided with a plurality of lateral grooves 410. The top of the inner cavity is provided with a circle of annular grooves, and the tops of several T-shaped slide bars 81 are slidably connected in the annular grooves. The two cutting knife assemblies 86 slide through the interior of the corresponding side through grooves 410 respectively. The cutting knife assembly 86 includes a cutting knife body 861. A placement cavity 862 is provided inside the cutting knife body 861 on the side close to the casting short tube 41. An air guide cavity 863 is provided on the side of the placement cavity 862 away from the casting short tube 41. The front end of the cutting knife body 861 is fixedly connected to the rear end of the corresponding fluororubber hose 10 on the side away from the casting short tube 41. The placement cavity 862 and the air guide cavity 863 and the interior of the fluororubber hose 10 are in a connected state, and a number of vertical rods 864 are evenly slid through the top of the placement cavity 862, and a block 865 is fixedly provided on the top of each vertical rod 864. A number of vent holes 866 are provided at the top of the placement cavity 862 and below each block 865, and a horizontal connecting rod 867 is fixedly provided between the bottoms of the vertical rods 864. The top of the horizontal connecting rod 867 is fixedly connected to the top wall of the placement cavity 862 by a number of telescopic springs 868, and the number of telescopic springs 868 and the number of vertical rods 864 are staggered with each other.

[0045] Through the mutual cooperation among the fluororubber hose 10, the cutting knife body 861, the block 865 and the vent hole 866, the air pressure can automatically push the cut and separated casting waste out of the casting short tube 41 quickly, reducing the workload in the later stage. Through the mutual cooperation among the spiral cavity 43, the air inlet pipe 44 and the exhaust pipe 49, cold air is introduced into the spiral cavity 43 to exchange heat with the casting waste in the square cavity 42, so that the casting waste is quickly cooled and shaped so that it can be cut and separated from the plastic product in the mold cavity in time. The setting of the heat-conducting inner sleeve 48 can quickly transfer the heat of the casting waste to the cold air in the spiral cavity 43, further improving the heat exchange efficiency and reducing energy waste. The structure is simple but the functionality is strong.

[0046] The embodiment of the present invention further provides a method for manufacturing a plastic container using a molding cavity unit, the specific method comprising the following steps:

[0047] Step 1: The molding cavity unit is used in combination with the injection molding mechanism. The upper mold 1 and the lower mold 2 are tightly fitted together by the force applied by the external hydraulic system. The injection molding mechanism is used to inject the molten plastic raw material into the internal mold cavities of the upper mold 1 and the lower mold 2 through the square through cavity 42, so that the molten plastic raw material fully fills the internal mold cavities of the upper mold 1 and the lower mold 2. When enough raw material is injected into the mold cavity, the excess raw material remains in the square through cavity 42, and then the injection of raw material is immediately stopped. Then, the plastic between the upper mold 1 and the lower mold 2 begins to cool and solidify.

[0048] Step 2: During the process, the first solenoid valve 45 is opened, and the external air pump is used to input cold air into the spiral cavity 43 through the air inlet pipe 44. The cold air passes through the spiral cavity 43 and is finally discharged through the exhaust pipe 49. During the process, the cold air exchanges heat with the casting waste in the square cavity 42, so that the casting waste in the square cavity 42 is quickly cooled and shaped. After a certain period of time, the micro servo motor 6 is started to drive the spur gear 7 to rotate. Since the spur gear 7 is engaged with the teeth 83, the adjustment disk 82 and the arc-shaped limit groove 84 rotate accordingly. Under the push of the inner wall of the arc-shaped limit groove 84, the connecting protrusion 85 and the cutting blade assembly 86 move to the side close to the casting short tube 41, and the lower slider 87 slides inside the sliding groove 9. The left and right cutting blade assemblies 86 approach each other until they touch, and then the micro servo motor 6 stops working. During the process, the two cutting blade assemblies 86 cut and separate the casting waste in the square cavity 42 from the plastic product in the mold cavity;

[0049] Step 3: Close the first solenoid valve 45 and open the second solenoid valve 47. The external air pump inputs the cold air into the fluororubber hoses 10 on the left and right sides through the air inlet pipe 44 and the bronchial pipe 46. Then the gas enters the placement chamber 862. As the air pressure in the placement chamber 862 increases, the block 865 is pushed upward. Under the action of the block 865, the cut and separated casting waste is also pushed upward for a certain distance. The gas continues to be discharged through the various vents 866, so that the air pressure at the bottom of the casting waste continues to increase. Under the action of the air pressure, the casting waste is pushed upward. , realizing automatic separation of the casting waste, and then closing the second solenoid valve 47. Under the elastic action of the telescopic spring 868, the stopper 865 returns to its original position, and then starting the micro servo motor 6 again to drive the spur gear 7 to rotate in the opposite direction, so that the adjusting disk 82 is reversed, and the connecting protrusion 85 and the cutting knife assembly 86 are driven to move to the side away from the casting short tube 41, so that the cutting knife assembly 86 is separated from the square through cavity 42. When the plastic raw material in the mold cavity is completely cooled and solidified, the upper mold 1 and the lower mold 2 are separated, and the finished plastic container is taken out, that is, the manufacture of the plastic container is completed.

[0050] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A molding cavity unit for processing a plastic container, comprising an upper mold (1) and a lower mold (2) for processing a plastic container, characterized in that: The upper mold (1) is located on the upper part of the lower mold (2); a receiving tray (3) is fixedly passed through the middle of the top of the upper mold (1); a pouring end mechanism (4) is fixedly passed through the middle of the receiving tray (3); a motor chamber (5) is fixedly provided on the right side of the top of the receiving tray (3); a micro servo motor (6) is fixedly provided at the bottom of the inner cavity of the motor chamber (5); a spur gear (7) is fixedly provided at the output end of the micro servo motor (6) passing through the top of the receiving tray (3); a waste cutting mechanism (8) is provided inside the receiving tray (3); and lower sliding grooves (9) are provided on both the left and right sides of the inner cavity bottom of the receiving tray (3); The waste cutting mechanism (8) includes a plurality of T-shaped slide bars (81), an adjusting disk (82) is fixedly provided between the bottoms of the plurality of T-shaped slide bars (81), a plurality of teeth (83) are evenly fixedly provided on the side wall of the adjusting disk (82), arc-shaped limiting grooves (84) are provided on both sides of the top of the adjusting disk (82), and connecting protruding rods (85) are slidably passed through the interiors of the two arc-shaped limiting grooves (84), a cutting knife assembly (86) is fixedly provided at the bottoms of the two connecting protruding rods (85), and a lower sliding block (87) is fixedly provided at the bottoms of the two cutting knife assemblies (86), and the lower sliding block (87) is slidably connected to the interiors of the corresponding lower sliding grooves (9); The cutting blade assembly (86) comprises a cutting blade body (861), a placement cavity (862) is provided inside the cutting blade body (861) on a side close to the casting short tube (41), and an air guide cavity (863) is provided inside the placement cavity (862) on a side away from the casting short tube (41), so that gas can enter the placement cavity (862) through the air guide cavity (863) and automatically separate the casting waste under the action of gas pressure.

2. A molding cavity unit for processing plastic containers according to claim 1, characterized in that: The pouring end mechanism (4) comprises a pouring short tube (41), the bottom of the pouring short tube (41) is fixedly passed through the interior of the accommodating plate (3), a square through cavity (42) is provided inside the pouring short tube (41), a spiral cavity (43) is provided on the side wall of the pouring short tube (41), an air intake pipe (44) connected to the spiral cavity (43) is fixedly provided at the lower front end of the pouring short tube (41), a first solenoid valve (45) is fixedly provided at the rear end of the air intake pipe (44), and a bronchial tube (46) is fixedly connected to the bottom of the air intake pipe (44).

3. A molding cavity unit for processing plastic containers according to claim 2, characterized in that: The bottom of the bronchial tube (46) is fixedly provided between the top of the upper mold (1) and the front wall of the accommodating plate (3); a second solenoid valve (47) is fixedly provided at the lower portion of the bronchial tube (46); a fluororubber hose (10) is fixedly provided on both the left and right sides of the rear end of the bottom of the bronchial tube (46); a heat-conducting inner sleeve (48) is fixedly provided on the inner wall of the square through cavity (42); an exhaust pipe (49) connected to the spiral cavity (43) is fixedly provided at the upper portion of the rear end of the casting short tube (41); and side through grooves (410) are provided on both the left and right sides of the lower portion of the square through cavity (42).

4. A molding cavity unit for processing a plastic container according to claim 3, characterized in that: The regulating disk (82) is rotatably sleeved on the outside of the casting short tube (41), and a circle of annular grooves is provided on the top of the inner cavity of the accommodating disk (3). The tops of the plurality of T-shaped sliding rods (81) are slidably connected in the annular grooves, and the two cutting knife assemblies (86) respectively slide through the inside of the corresponding side through grooves (410).

5. A molding cavity unit for processing plastic containers according to claim 4, characterized in that: The front end of the cutting knife body (861) is fixedly connected to the rear end of the corresponding fluororubber hose (10) at a side away from the casting short tube (41), and the placement cavity (862), the air guide cavity (863) and the interior of the fluororubber hose (10) are in a communicating state. A plurality of vertical rods (864) are uniformly slidably passed through the top of the placement cavity (862).

6. A molding cavity unit for processing plastic containers according to claim 5, characterized in that: A stopper (865) is fixedly provided on the top of each vertical rod (864), and a plurality of ventilation holes (866) are provided on the top of the placement cavity (862) and below each stopper (865).

7. A molding cavity unit for processing a plastic container according to claim 6, characterized in that: A horizontal connecting rod (867) is fixedly arranged between the bottoms of the plurality of vertical rods (864), and the top of the horizontal connecting rod (867) is fixedly connected to the top wall of the placement cavity (862) via a plurality of telescopic springs (868), and the plurality of telescopic springs (868) and the plurality of vertical rods (864) are interlaced with each other.

8. A method for manufacturing a plastic container using the molding cavity unit for processing a plastic container according to claim 7, characterized in that: The method comprises the following steps: Step 1: The molding cavity unit is used in combination with the injection molding mechanism. The upper mold (1) and the lower mold (2) are tightly fitted together by the force applied by the external hydraulic system. The injection molding mechanism is used to inject the molten plastic raw material into the internal mold cavity of the upper mold (1) and the lower mold (2) through the square through cavity (42), so that the molten plastic raw material fully fills the internal mold cavity of the upper mold (1) and the lower mold (2). When enough raw material is injected into the mold cavity, the excess raw material stays in the square through cavity (42), and then the injection of the raw material is immediately stopped. Then, the plastic between the upper mold (1) and the lower mold (2) begins to cool and solidify; Step 2: During the process, the first electromagnetic valve (45) is opened, and the cold air is input into the spiral cavity (43) through the air inlet pipe (44) by using an external air pump. The cold air passes through the spiral cavity (43) and is finally discharged through the exhaust pipe (49). During the process, the cold air exchanges heat with the casting waste in the square cavity (42), so that the casting waste in the square cavity (42) is quickly cooled and shaped. After a certain period of time, the micro servo motor (6) is started to drive the spur gear (7) to rotate. Since the spur gear (7) is meshed with the teeth (83), the adjustment disk (8 2) and the arc-shaped limiting groove (84) rotate accordingly, and under the push of the inner wall of the arc-shaped limiting groove (84), the connecting protruding rod (85) and the cutting knife assembly (86) move to the side close to the casting short tube (41), and the lower slider (87) slides inside the lower sliding groove (9), and the left and right cutting knife assemblies (86) approach each other until they touch, and then the micro servo motor (6) stops working. During the process, the two cutting knife assemblies (86) cut and separate the casting waste in the square through cavity (42) and the plastic product in the mold cavity; Step 3: Close the first solenoid valve (45) and open the second solenoid valve (47). The external air pump inputs the cold air into the fluororubber hoses (10) on the left and right sides through the air inlet pipe (44) and the bronchial pipe (46). Then the gas enters the placement chamber (862). As the air pressure in the placement chamber (862) increases, the block (865) is pushed upward. Under the action of the block (865), the cut and separated casting waste is also pushed upward for a certain distance. The gas continues to be discharged through the various vents (866), so that the air pressure at the bottom of the casting waste continues to increase. Under the action of the air pressure, the casting waste is pushed upward, achieving The casting waste is automatically separated, and then the second electromagnetic valve (47) is closed. Under the elastic action of the telescopic spring (868), the stopper (865) returns to its original position, and then the micro servo motor (6) is started again to drive the spur gear (7) to rotate in the opposite direction, so that the adjustment disk (82) is reversed, and the connecting protrusion (85) and the cutting knife assembly (86) are moved to the side away from the casting short tube (41), so that the cutting knife assembly (86) is separated from the square through cavity (42). When the plastic raw material in the mold cavity is completely cooled and solidified, the upper mold (1) and the lower mold (2) are separated, and the finished plastic container is taken out, that is, the manufacturing of the plastic container is completed.

9. The method for manufacturing a plastic container using a molding cavity unit according to claim 8, wherein: The teeth (83) on the right side mesh with the left side of the spur gear (7).

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