Extrusion mechanism of blow-filling-sealing integrated machine and blow-filling-sealing integrated machine

Abstract

This application discloses an extrusion mechanism and the blow-fill-seal integrated machine, relating to the field of filling equipment technology. It involves setting a vertically arranged tube within the space enclosed by the extrusion die to insulate heat and serve as a carrier. Multiple rows of vertically arranged semiconductor cooling chips are placed on the tube, with the hot ends of the cooling chips close to the extrusion die. While maintaining the temperature around the extrusion die, the area near the die axis is cooled. This achieves the technical effects of minimizing damage to the filling liquid during use, effectively accelerating the cooling of the mold contents, and minimizing the impact on the flowability of the molten material within the extrusion die.

Description

Technical Field

[0001] This invention relates to the field of filling equipment technology, and in particular to an extrusion mechanism and a blow-fill-seal integrated machine. Background Technology

[0002] Blow-fill-seal aseptic filling process is an advanced aseptic filling technology that is widely used in the pharmaceutical, food and cosmetic industries, and is especially suitable for the production of small-volume liquid products. The core equipment used in the blow-fill-seal aseptic filling process is the blow-fill-seal integrated machine.

[0003] The blow-fill-seal integrated machine includes an extrusion mechanism, a filling needle, a head clamp assembly, and a forming mold (the forming mold is a left-right centered opening and closing mold and includes a main mold and a head mold). During operation, the extrusion mechanism continuously extrudes the tube blank and conveys it to the forming mold. During this period, air is blown into the tube blank from the top of the extrusion die head of the extrusion mechanism to maintain its expansion state. The tube blank is shaped by the forming mold. Then, the filling needle passes through the space enclosed by the extrusion die head and enters the container shaped by the forming mold for filling. Finally, the head clamp assembly is used to complete the sealing.

[0004] The extrusion die is a vertically oriented tube. Because it needs to contain molten plastic to extrude the tube blank, the temperature around it and the space it encloses is relatively high. When the filling needle is used for filling, it needs to penetrate the space enclosed by the extrusion die. When it approaches and penetrates the extrusion die, both the needle itself and the liquid it needs to deliver will be affected by the ambient temperature. Especially for liquids that are sensitive to high temperatures, they are easily damaged by temperature during filling. In addition, during the process of forming the tube blank into a container in the forming mold, the temperature of the tube blank is cold on the outside and hot on the inside because the cooling component is located inside the forming mold. In order to avoid the impact of high temperature on the filling liquid, sufficient cooling time needs to be allowed for the inner container of the forming mold, which will slow down the overall product preparation efficiency and is not conducive to high-efficiency production. If cold air is blown into the tube blank from the top of the extrusion die to reduce damage to the molten plastic and accelerate the cooling of the inner container of the molding die, the temperature of the extrusion die itself will not meet the standard due to the influence of the cold air (affecting the fluidity of the molten plastic in the extrusion die), which will seriously affect the high-quality molding of the tube blank and is not conducive to production.

[0005] Therefore, there is a need for an extrusion mechanism in a blow-fill-seal machine that causes less damage to the filling liquid during use, can effectively accelerate the cooling of the inner container of the molding die, and has less impact on the flowability of the molten plastic in the extrusion die. Summary of the Invention

[0006] This application provides an extrusion mechanism for a blow-fill-seal integrated machine, which solves the technical problems of existing blow-fill-seal integrated machines causing significant damage to the filled liquid and low product preparation efficiency due to their own structural limitations. It achieves the technical effects of minimizing damage to the filled liquid, effectively accelerating the cooling of the inner container of the molding die, and having minimal impact on the flowability of the molten material in the extrusion die during use.

[0007] This application provides an extrusion mechanism for a blow-fill-seal integrated machine, including an extrusion die; the extrusion die is a vertically placed cylindrical tube with an inlet on one side and an outlet at the bottom, and molten plastic is output from the outlet under pressure to form a tube blank; it also includes a temperature insulation and temperature control component; The temperature insulation and temperature regulation component is used to isolate the high temperature of the extrusion die for the filling needle and to controllably adjust the temperature within the space enclosed by the extrusion die. The temperature insulation and regulation assembly includes a top load frame, a top air jet ring, a vertical load tube, and a temperature regulation plate; The top support frame is a rigid frame that is fixed to the top of the extrusion die; The top air jet ring is a rigid hollow ring body, fixed on the top support frame, coaxial with the extrusion die head, connected to the air source, and has multiple air outlets evenly distributed at the bottom; The vertical carrier tube is a vertical rigid round tube, with its top fixed to the bottom of the top carrier frame. Its axis coincides with the axis of the extrusion die, and its axial length is the same as the axial length of the extrusion die. The temperature regulating plate is a vertically placed rectangular semiconductor cooling plate, and there are multiple plates arranged in multiple rows and columns, with more than 5 plates in each row and more than 3 plates in each column. The temperature regulating plate is inserted through and fixed on the vertical carrier tube, with the hot end close to the side wall of the extrusion die and the cold end close to the axis of the extrusion die, and it operates under control.

[0008] Furthermore, the inner diameter of the vertically placed carrier tube is 0.6 to 0.8 times the diameter of the space enclosed by the extrusion die.

[0009] Furthermore, the air outlet of the top jet ring blows air directly downwards, and the air outlet is located directly above the cold end of the temperature regulating plate. The air blown out from the air outlet will have its temperature reduced after passing through the cold end of the temperature regulating plate.

[0010] Preferably, the distance between the hot end of the temperature regulating plate and the side wall of the extrusion die is greater than 7 mm.

[0011] A blow-fill-seal integrated machine includes a support frame, an extrusion mechanism, a head clamp assembly, a filling needle, and a forming mold; the number of head clamp assemblies is two, which are slidably positioned on the support frame and can slide up and down in a controlled manner to follow the tube blank. The end cap clamp assembly not only performs the sealing operation, but also serves to punch holes in the tube blank at the appropriate time to promote the flow of gas inside the tube blank. Two end-clamp assemblies are symmetrically arranged below the extrusion mechanism. When they are brought close to each other in a controlled manner, they punch holes in the side wall of the tube blank or seal the container formed by the molding die. The end cap clamp assembly includes a welded sealing plate for sealing treatment, and a venting cone for punching holes in the tube blank to facilitate ventilation; the venting cone is a metal rod with a sharp end, arranged laterally, and there are multiple cones arranged in a row.

[0012] Furthermore, the end cap clamp assembly includes a horizontal telescopic frame, an end U-shaped frame, a horizontal support column, a welded sealing plate, and a venting cone; The horizontal telescopic frame is a horizontal rigid frame that is controlled to extend and retract, with one end positioned on the support frame. The end-shaped frame is a rigid plate and is fixed to the other end of the horizontal telescopic frame; The horizontally placed support column is a rigid column placed horizontally, with both ends positioned on the end bracket. It has a built-in motor that is controlled to rotate relative to the end bracket. The welding sealing plate is a horizontally placed rectangular rigid metal plate, which is an electric heating plate. It is fixed to the bottom of the horizontally placed support column and heats the opening of the container formed by the molding die to achieve sealing. The non-sharp end of the venting cone is fixed to the side wall of the C-shaped frame at the far end of the horizontally placed column.

[0013] Furthermore, the horizontal telescopic frame includes a basic telescopic rod, as well as a fixed plate and a sliding rod; The basic telescopic pole consists of a base section and a movable section. The base section is positioned on the support frame, and the movable section moves relative to the base section to achieve the telescopic extension and retraction of the basic telescopic pole. The fixed plate is a vertical rigid plate, fixed to the base of the basic telescopic rod near the movable part, and has a through hole for the sliding rod to pass through. The sliding rod is a horizontally placed rigid round rod, one end of which is fixed to the end-shaped frame, and it passes through and is slidably positioned on the fixed plate.

[0014] Furthermore, the venting cone has a built-in electric heating wire that is heated before piercing, thus facilitating insertion during piercing.

[0015] Preferably, an air intake groove is positioned on the side wall of the venting cone; An adsorption connecting pipe is positioned on the surface of the end-shaped frame near the horizontally placed column, and an exhaust port is positioned on the surface away from the horizontally placed column; the adsorption connecting pipe and the exhaust port are connected. The adsorption connecting tube is a horizontally placed rigid tube, with an end magnet positioned at the end furthest from its fixed point; the end magnet is a ring-shaped electromagnet that is controlled to be energized and de-energized. A connecting telescopic pipe is fixed on the side wall of the horizontally placed column away from the venting cone; the connecting telescopic pipe is connected to the suction groove. The connecting expansion tube is a horizontally placed non-metallic corrugated pipe, with an end ring positioned at the end furthest from its own fixed point. The end ring is a ferromagnetic metal ring; the end magnet is compatible with the end ring; When the connecting telescopic tube rotates close to the adsorption connecting tube, the control end magnet is energized, attracting the end ring and thus connecting the connecting telescopic tube with the adsorption connecting tube; the exhaust port is connected to the pump assembly.

[0016] Preferably, a blank pressing assembly is also positioned on the head clamp assembly; The blank pressing assembly includes an abutment plate, an intermediate compression spring, and a regulating magnet; The contact plate is a vertical rigid plate with through holes that correspond one-to-one with the vent cones on the horizontally placed column. The contact plate is slidably positioned on the venting cone and slides along its length; the contact plate is made of ferromagnetic material; The intermediate compression spring is a metal compression spring located between the contact plate and the horizontal support column, with one end fixed to the contact plate and the other end fixed to the side wall of the horizontal support column. The regulating magnet is an electromagnet block that is controlled to be energized and de-energized. It is fixed on a horizontal support column and located in the space enclosed by the middle compression spring. When the regulating magnet is de-energized, the contact plate moves to the position of the venting cone near the tip.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: By setting up a vertically oriented tube within the space enclosed by the extrusion die to insulate heat and serve as a carrier, and by placing multiple rows and columns of vertically oriented semiconductor cooling chips on the tube with the hot end of the semiconductor cooling chips close to the extrusion die, the system cools the area near the extrusion die axis while maintaining the temperature around the extrusion die. This effectively solves the technical problems of existing blow-fill-seal integrated machines, which suffer significant damage to the filling liquid and have low product preparation efficiency due to their own structural limitations. As a result, the extrusion mechanism of the blow-fill-seal integrated machine causes less damage to the filling liquid during use, effectively accelerates the cooling of the inner container of the molding die, and has less impact on the flowability of the molten material inside the extrusion die. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the extrusion mechanism of the blow-fill-seal integrated machine of this application; Figure 2 This is a schematic diagram showing the positional relationship of the components of the extrusion mechanism of the blow-fill-seal integrated machine of this application; Figure 3 This is a schematic diagram of the structure of a temperature insulation and regulation component; Figure 4 This is a simplified structural diagram of the blow-fill-seal integrated machine; Figure 5 This is a schematic diagram of the external structure of the end cap clamp assembly; Figure 6 A schematic diagram showing the state of the end cap clamp assembly during sealing; Figure 7 This is a schematic diagram showing the positional relationship of the components of the end cap clamp assembly; Figure 8 This is a structural schematic diagram of the pressure component assembly.

[0019] In the picture: Extrusion die 001, tube blank 011, end cap clamp assembly 002, filling needle 003, bottle head mold 004, bottle body mold 005, top support frame 110, top air jet ring 120, vertical support tube 130, temperature regulating plate 140, base frame 150, basic telescopic rod 211, fixed plate 212, sliding rod 213, end C-shaped frame 220, adsorption connecting tube 221, end magnet 222, exhaust port 223, horizontal support column 230, connecting telescopic tube 231, end ring 232, welded sealing plate 240, venting cone 250, suction groove 251, pump assembly 260, contact plate 271, through hole 272, intermediate compression spring 273, regulating magnet 274. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0021] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Example 1

[0024] like Figures 1 to 3 As shown, the extrusion mechanism of the blow-fill-seal integrated machine of this application includes an extrusion die 001 and a temperature insulation and control assembly; The extrusion die 001 is a vertically placed cylindrical tube with an inlet on one side and an outlet at the bottom. Molten plastic is output from the outlet under pressure to form a tube blank 011. The tube blank 011 is a tubular plastic blank. Both the extrusion die 001 and the tube blank 011 are existing technologies and will not be described in detail here.

[0025] The temperature insulation and temperature regulation component is used to isolate the high temperature of the extrusion die 001 from the filling needle 003 and to control and adjust the temperature within the space enclosed by the extrusion die 001, thereby ensuring efficient product processing while reducing damage to the liquid medicine. The temperature insulation and temperature regulation assembly includes a top support frame 110, a top air jet ring 120, a vertical support pipe 130, a temperature regulation plate 140, and a base frame 150; The top support frame 110 is a rigid frame, preferably a horizontal rod, which serves as a load-bearing and supporting element and is fixed to the top of the extrusion die 001. The top jet ring 120 is a rigid hollow ring body, fixed to the top or bottom of the top support frame 110, coaxial with the extrusion die 001, and connected to the air source (preferably an air pump). Multiple downward-facing air outlets are evenly distributed at the bottom. The air source sends gas into the top jet ring 120 so that it is ejected downward. The vertical carrier tube 130 is a vertical rigid round tube, with its top fixed to the bottom of the top carrier frame 110. Its axis coincides with the axis of the extrusion die 001, and its axial length is the same as that of the extrusion die 001. Its inner diameter is 0.6 to 0.8 times the diameter of the space enclosed by the extrusion die 001. It serves as a load-bearing and supporting function while also providing a certain degree of heat insulation. The side wall of the vertical carrier tube 130 is densely covered with grooves for positioning the temperature regulating plate 140. The temperature regulating plate 140 is a vertically placed rectangular semiconductor cooling plate, and there are multiple plates arranged in multiple rows and columns, with more than 5 plates in each row and more than 3 plates in each column. The temperature regulating plate 140 is inserted through and fixed on the vertical carrier tube 130. The hot end is close to the side wall of the extrusion die 001, and the cold end is close to the axis of the extrusion die 001. The distance between the hot end of the temperature regulating plate 140 and the side wall of the extrusion die 001 is greater than 7 mm. The temperature regulating plate 140 is controlled to operate. During operation, it maintains a high temperature near the position of the extrusion die 001 and reduces the temperature near the axis of the extrusion die 001. The air outlet of the top air jet ring 120 blows air directly downwards. The air outlet is located directly above the cold end of the temperature regulating plate 140. The air blown out from the air outlet will be cooled down after passing through the cold end of the temperature regulating plate 140. The base frame 150 is a rigid frame or rigid rod that fixes the bottom of the vertical carrier tube 130 to the extrusion die 001.

[0026] During the operation of the blow-fill-seal machine, the temperature control plate 140 of the extrusion mechanism operates continuously or intermittently. While maintaining the high temperature environment around the extrusion die 001 to ensure the fluidity of the molten material inside the extrusion die, it reduces the temperature of the working path of the filling needle 003 to reduce the damage to the drug caused by heat during filling. At the same time, it cools the gas flowing through the cold end of the temperature control plate 140 to accelerate the cooling of the inner container of the molding die and improve the product preparation efficiency.

[0027] Preferably, the gas supplied to the top jet ring 120 is cooled.

[0028] Preferably, the temperature of the gas supplied to the top jet ring 120 is below 15 degrees Celsius.

[0029] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: This invention solves the technical problems of existing blow-fill-seal integrated machines, which suffer significant damage to the filled liquid and have low product preparation efficiency due to their structural limitations. It achieves the technical effects of minimizing damage to the filled liquid during use, effectively accelerating the cooling of the inner container of the molding die, and having minimal impact on the flowability of the molten material in the extrusion die.

[0030] Example 2

[0031] like Figure 4 As shown, a blow-fill-seal integrated machine includes a support frame, an extrusion mechanism, a cap clamp assembly 002, a filling needle 003, and a molding die; The structure and function of the extrusion mechanism are the same as those of the extrusion mechanism in Example 1; The supporting frame is the frame of the blow-fill-seal integrated machine (not shown in the figure), a rigid frame structure positioned on the ground, which serves to support and position other components of the blow-fill-seal integrated machine; the forming mold is a left-right centered opening and closing mold including a bottle head mold 004 and a bottle body mold 005, located below the sealing head clamp assembly 002; the filling needle 003 is used to inject liquid medicine into the container formed by the forming mold; the supporting frame, forming mold, and filling needle 003 are all prior art and will not be described in detail here; like Figure 5 and Figure 6 As shown, the end cap clamp assembly 002 serves to seal the container formed by the molding die, and also serves to punch holes in the tube blank 011 in a timely manner to promote gas flow inside the tube blank 011 and further accelerate the cooling of the container formed by the molding die. The number of the end cap clamp assemblies 002 is two, which are slidably positioned on the support frame and controlled to slide up and down along the rigid frame, thus moving with the tube blank 011; The two end-head clamping assemblies 002 are symmetrically arranged and located below the extrusion mechanism. When controlled to approach each other, they punch holes in the side wall of the tube blank 011 or seal the container shaped by the forming die. The end-head clamping assembly 002 includes a horizontally arranged telescopic frame body, an end C-shaped frame 220, a horizontally arranged support column 230, a welding and sealing plate 240, and a gas release cone 250. The horizontally arranged telescopic frame body is a horizontally arranged rigid frame body with a horizontal telescopic function. It is controlled to expand and contract, and one end is positioned on the support frame. The horizontally arranged telescopic frame body includes a basic telescopic rod 211. The basic telescopic rod 211 is a horizontally arranged rigid electric telescopic rod. The end C-shaped frame 220 is a rigid plate body fixed at the other end of the horizontally arranged telescopic frame body for connection and fixation. Its cross-section is a C-shape with the opening facing away from the horizontally arranged telescopic frame body. The horizontally arranged support column 230 is a horizontally arranged rigid column body. Both ends are positioned on the end C-shaped frame 220. It has a built-in motor and is controlled to rotate relative to the end C-shaped frame 220. The axial direction of the rotation axis is perpendicular to the telescopic direction of the horizontally arranged telescopic frame body and the same as the length direction of the connecting line between the two ends of the end C-shaped frame 220. The welding and sealing plate 240 is a horizontally arranged rectangular rigid metal plate, which is an electric heating plate. It is fixed at the bottom of the horizontally arranged support column 230 and heats the mouth of the container shaped by the forming die when it touches the mouth, thereby achieving sealing. The gas release cone 250 is a metal rod with a sharp end (the whole is conical), horizontally arranged. The non-sharp end is fixed on the side wall of the horizontally arranged support column 230 away from the end C-shaped frame 220. The number of them is multiple and arranged in a row, and is used to insert into the tube blank 011 in due time to punch holes for ventilation in the tube blank 011, thereby accelerating the flow of the gas blown into the tube blank 011. When the blow-fill-seal integrated machine of the present application is in use: During the extrusion process of the tube blank 011, air is blown into the tube blank 011 through the top air jet ring 120 to maintain its expansion state; the venting cone 250 is controlled to approach and insert into the tube blank 011 and then reset, creating air holes in the area where it will become the mouth of the molded container; then the end cap clamp assembly 002 is controlled to move down so that it follows the tube blank 011 and stops near the top of the bottle head mold 004; the tube blank 011 between the molding molds is shaped by mold closing, and the liquid medicine is injected using the filling needle 003; during this process, the temperature control plate 1 is adjusted as needed (by changing the current). The temperature regulation efficiency of 40 protects the liquid medicine while dissipating heat from the inner wall of the molded container (the gas blown into the tube blank 011 flows out from the air hole, thereby increasing the gas flow speed in the molded container, thereby accelerating the heat dissipation efficiency of the inner wall of the molded container, and thus improving the overall production efficiency of the product); then, the horizontal carrier column 230 is controlled to rotate so that the welding sealing plate 240 rotates to the upright position, and then it is heated when it comes into contact with the mouth of the container molded by the forming mold to achieve sealing (the air hole is sealed together during sealing); the cycle operation is carried out to achieve continuous production of the product.

[0032] Furthermore, such as Figure 5 and Figure 6 As shown, to improve the stability of the horizontal telescopic frame's extension and retraction, the horizontal telescopic frame also includes a fixed plate 212 and a sliding rod 213; the basic telescopic rod 211 includes a base part and a movable part, the base part is positioned on the support frame, and the movable part moves relative to the base part to realize the extension and retraction of the basic telescopic rod 211; the fixed plate 212 is a vertical rigid plate, fixed on the base part of the basic telescopic rod 211 near the movable part, and has a through hole for the sliding rod 213 to pass through; the sliding rod 213 is a horizontal rigid round rod, one end of which is fixed on the end-shaped frame 220, and passes through and is slidably positioned on the fixed plate 212.

[0033] Preferably, the venting cone 250 has a built-in electric heating wire that is heated before piercing, thus facilitating insertion during piercing.

[0034] Preferred, such as Figure 7As shown, to further promote gas flow, the venting cone 250 is hollow inside, and one or more suction grooves 251 communicating with the internal space are positioned on its side wall; an adsorption connecting pipe 221 is positioned on the surface of the end-shaped frame 220 near the horizontal support column 230, and an exhaust port 223 is positioned on the surface away from the horizontal support column 230; the adsorption connecting pipe 221 has a built-in gas channel, connecting the adsorption connecting pipe 221 and the exhaust port 223; the adsorption connecting pipe 221 is a horizontal rigid pipe, and an end magnet 222 is positioned at the end away from its own fixing point; the end magnet 222 is a ring electromagnet, which is controlled to be energized and de-energized; a connecting telescopic pipe 231 is fixed on the side wall of the horizontal support column 230 away from the venting cone 250; the horizontal support column 230 has a built-in gas channel, connecting the connecting telescopic pipe 231 to the suction groove 251; the connecting telescopic pipe 231 is a horizontal non-metallic corrugated pipe, which can be extended as needed. An end ring 232 is positioned at the end furthest from its fixed point; the end ring 232 is a ferromagnetic metal ring used to cooperate with the end magnet 222; the end magnet 222 is adapted to the end ring 232; when the connecting telescopic tube 231 rotates to approach the adsorption connecting tube 221, the end magnet 222 is energized to attract the end ring 232, thereby connecting the connecting telescopic tube 231 with the adsorption connecting tube 221; the exhaust port 223 is connected to the air pumping assembly 260; the air pumping assembly 260 is a combination of an air pump, an air valve, and an air delivery pipe; after the venting cone 250 is inserted into the tube blank 011, it is not reset, but only controlled to move with the tube blank 011 until the opening of the molded container needs to be welded closed; after the venting cone 250 is inserted into the tube blank 011, the connecting telescopic tube 231 is connected to the adsorption connecting tube 221, and then the air pumping assembly 260 is used to draw air from the space enclosed by the tube blank 011, thereby promoting gas circulation.

[0035] Preferred, such as Figure 8As shown, to facilitate the insertion and removal of the venting cone 250, a pressing assembly is also positioned on the end cap clamp assembly 002; the pressing assembly includes a contact plate 271, an intermediate compression spring 273, and an adjusting magnet 274; the contact plate 271 is an upright rigid plate, on which a through hole 272 is provided, corresponding one-to-one with the venting cone 250 on the horizontal support column 230 and of similar size (diameter difference less than 3 mm); the venting cone 250 passes through the through hole 272; the contact plate 271 is slidably positioned. The air venting cone 250 slides along its length; the contact plate 271 is made of ferromagnetic material, and its surface away from the horizontal support column 230 is smooth; the intermediate compression spring 273 is a metal compression spring located between the contact plate 271 and the horizontal support column 230, with one end fixed to the contact plate 271 and the other end fixed to the side wall of the horizontal support column 230; the regulating magnet 274 is an electromagnet block that is controlled to be energized and de-energized, fixed to the horizontal support column 230 and located within the area enclosed by the intermediate compression spring 273. In space; when the regulating magnet 274 is energized, it attracts the contact plate 271, causing it to overcome the elastic force of the intermediate compression spring 273 and approach it; when the regulating magnet 274 is de-energized, the contact plate 271 moves to a position near the tip of the venting cone 250; when the venting cone 250 needs to be inserted into the tube blank 011, the end of the venting cone 250 and the contact plate 271 simultaneously (or almost simultaneously) contact the tube blank 011. The presence of the contact plate 271 to a certain extent restricts the tube blank 011 from approaching the tip of the venting cone 250. The deformation caused by the pressure of the venting cone 250 facilitates the venting cone 250 to punch through holes in the tube blank 011; after the contact plate 271 contacts the tube blank 011, the control magnet 274 attracts the contact plate 271 and moves it away from the tip of the venting cone 250; when it is necessary to pull out the venting cone 250, the horizontal telescopic frame 210 drives the venting cone 250 to retract while the control magnet 274 is de-energized, so that the contact plate 271 squeezes the tube blank 011, thus facilitating the pull-out of the venting cone 250.

[0036] Preferably, the operation of the air pumping assembly 260 is interrupted during the process of pulling out the venting cone 250.

[0037] Preferably, during the process of pulling out the vent cone 250, the operation of the air pump assembly 260 is controlled to exhaust the air from the air intake groove 251, thereby reducing the resistance when pulling out the vent cone 250.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An extrusion mechanism of a blow-fill-seal integrated machine, comprising an extrusion die (001); the extrusion die (001) is a vertically arranged cylindrical tube with an inlet on one side and an outlet at the bottom, wherein molten plastic is output from the outlet under pressure to form a tube blank (011); characterized in that: It also includes thermal insulation and temperature control components; The temperature insulation and temperature regulation component is used to isolate the filling needle (003) from the high temperature of the extrusion die (001) and to control the temperature within the space enclosed by the extrusion die (001); The temperature insulation and temperature regulation assembly includes a top load frame (110), a top air jet ring (120), a vertical load tube (130), and a temperature regulating plate (140); The top support frame (110) is a rigid frame that is fixed to the top of the extrusion die (001); The top air jet ring (120) is a rigid hollow ring body, fixed on the top support frame (110), coaxial with the extrusion die (001), connected to the air source, and has multiple air outlets evenly distributed at the bottom; The vertical carrier tube (130) is a vertical rigid round tube, the top of which is fixed to the bottom of the top carrier frame (110), the axis of which coincides with the axis of the extrusion die (001), and the axial length is the same as the axial length of the extrusion die (001). The temperature regulating plate (140) is a vertically placed rectangular semiconductor cooling plate. There are multiple plates arranged in multiple rows and columns, with more than 5 plates in each row and more than 3 in each column. The temperature regulating plate (140) is inserted through and fixed on the vertical carrier tube (130). The hot end is close to the side wall of the extrusion die (001), and the cold end is close to the axis of the extrusion die (001). It is operated under control.

2. The extrusion mechanism of the blow-fill-seal integrated machine as described in claim 1, characterized in that: The inner diameter of the vertical carrier tube (130) is 0.6 to 0.8 times the diameter of the space enclosed by the extrusion die (001).

3. The extrusion mechanism of the blow-fill-seal integrated machine as described in claim 1, characterized in that: The air outlet of the top air jet ring (120) blows air directly downwards. The air outlet is located directly above the cold end of the temperature regulating plate (140). The air blown out from the air outlet will have its temperature reduced after passing through the cold end of the temperature regulating plate (140).

4. The extrusion mechanism of the blow-fill-seal integrated machine as described in claim 1, characterized in that: The distance between the hot end of the temperature regulating plate (140) and the side wall of the extrusion die (001) is greater than 7 mm.

5. A blow-fill-seal integrated machine, comprising a support frame, an extrusion mechanism, a head clamp assembly (002), a filling needle (003), and a forming mold; the number of head clamp assemblies (002) is two, which are slidably positioned on the support frame and controlled to slide up and down, thus following the movement of the tube blank (011); characterized in that: The structure of the extrusion mechanism is the same as that of the extrusion mechanism in claim 1; The end cap clamp assembly (002) not only performs the sealing operation, but also plays the role of punching holes in the tube blank (011) in a timely manner to promote the gas flow inside the tube blank (011); Two end-cap clamp assemblies (002) are symmetrically arranged and located below the extrusion mechanism. When they are brought close to each other in a controlled manner, they punch holes in the side wall of the tube blank (011) or seal the container formed by the molding die. The end cap clamp assembly (002) includes a welded sealing plate (240) for sealing treatment, and a venting cone (250) for punching holes in the tube blank (011) to facilitate ventilation; the venting cone (250) is a metal rod with a sharp end, arranged laterally, and there are multiple cones arranged in a row.

6. The blow-fill-seal integrated machine as described in claim 5, characterized in that: The end cap clamp assembly (002) includes a horizontal telescopic frame, an end U-shaped frame (220), a horizontal support column (230), a welded sealing plate (240), and a venting cone (250); The horizontal telescopic frame is a horizontal rigid frame that is controlled to extend and retract, with one end positioned on the support frame. The end-shaped frame (220) is a rigid plate body, fixed to the other end of the horizontal telescopic frame body; The horizontal support column (230) is a horizontal rigid column with both ends positioned on the end bracket (220). It has a built-in motor and is controlled to rotate relative to the end bracket (220). The welding sealing plate (240) is a horizontally placed rectangular hard metal plate, which is an electric heating plate. It is fixed to the bottom of the horizontally placed support column (230) and heats the opening of the container formed by the forming mold to achieve sealing. The non-sharp end of the venting cone (250) is fixed to the side wall of the far end of the cross-shaped frame (220) of the horizontal support column (230).

7. The blow-fill-seal integrated machine as described in claim 5, characterized in that: The horizontal telescopic frame includes a basic telescopic rod (211), a fixed plate (212), and a sliding rod (213); The basic telescopic pole (211) includes a base part and a movable part. The base part is positioned on the support frame, and the movable part moves relative to the base part to realize the telescopic extension and retraction of the basic telescopic pole (211). The fixed plate (212) is a vertical rigid plate, fixed on the base of the basic telescopic rod (211) near the movable part, and has a through hole for the sliding rod (213) to pass through. The sliding rod (213) is a horizontally placed rigid round rod, one end of which is fixed on the end-shaped frame (220), and it passes through and is slidably positioned on the fixed plate (212).

8. The blow-fill-seal integrated machine as described in claim 5, characterized in that: The venting cone (250) has a built-in electric heating wire that is heated before piercing, thus facilitating insertion during piercing.

9. The blow-fill-seal integrated machine as described in claim 6 or 8, characterized in that: An air intake groove (251) is positioned on the side wall of the venting cone (250); An adsorption connecting pipe (221) is positioned on the surface of the end-shaped frame (220) near the horizontal support column (230), and an exhaust port (223) is positioned on the surface away from the horizontal support column (230); the adsorption connecting pipe (221) and the exhaust port (223) are connected; The adsorption connecting tube (221) is a horizontally placed rigid tube, with an end magnet (222) positioned at the end away from its own fixed point; the end magnet (222) is a ring-shaped electromagnet that is controlled to be energized and de-energized. A connecting telescopic tube (231) is fixed on the side wall of the horizontally placed column (230) away from the venting cone (250); the connecting telescopic tube (231) is connected to the suction groove (251); The connecting telescopic pipe (231) is a horizontally placed non-metallic corrugated pipe, and an end ring (232) is positioned at the end away from its own fixed point; The end ring (232) is a ferromagnetic metal ring; the end magnet (222) is compatible with the end ring (232); When the connecting telescopic tube (231) rotates to be close to the adsorption connecting tube (221), the control end magnet (222) is energized, attracting the end ring (232) and thus connecting the connecting telescopic tube (231) with the adsorption connecting tube (221); the exhaust port (223) is connected with the air pump assembly (260).

10. The blow-fill-seal integrated machine as described in claim 9, characterized in that: The head clamp assembly (002) also has a blank pressing assembly positioned on it; The blanking assembly includes a contact plate (271), an intermediate compression spring (273), and a regulating magnet (274); The contact plate (271) is a vertical rigid plate with through holes (272) that correspond one-to-one with the vent cones (250) on the horizontal support column (230). The contact plate (271) is slidably positioned on the venting cone (250) and slides along its length; The contact plate (271) is made of ferromagnetic material; The intermediate compression spring (273) is a metal compression spring located between the contact plate (271) and the horizontal support column (230). One end is fixed to the contact plate (271), and the other end is fixed to the side wall of the horizontal support column (230). The regulating magnet (274) is an electromagnet block that is controlled to be energized and de-energized. It is fixed on the horizontal support column (230) and located in the space enclosed by the intermediate compression spring (273). When the regulating magnet (274) is de-energized, the contact plate (271) moves to the position near the tip of the venting cone (250).

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