Efficient bottle blow molding production device and method

Abstract

The invention provides an efficient bottle blow molding production device and method, and a compression molding cylinder and a blow molding cylinder are rotationally connected with a compression molding rotary drum and a blow molding rotary drum respectively and are driven by a driving motor to rotate. And the outer side of the chain is connected with a plurality of bottle mouth sleeves. A plurality of compression molding upper sliding sleeves connected with the compression molding male die shafts are arranged on the periphery of the upper portion of the compression molding rotary drum, a plurality of compression molding lower sliding sleeves connected with the compression molding female die sleeves are arranged on the periphery of the lower portion of the compression molding rotary drum, and when the compression molding rotary drum is far away from the blow molding cylinder, the compression molding male die shafts and the female die sleeves extrude the bottleneck sleeve and are far away from the bottleneck sleeve when approaching. A plurality of blow-molding upper sliding sleeves connected with blow-molding pipes are arranged on the periphery of the upper part of the blow-molding drum, a high-pressure air pump communicated with an air outlet pipe is mounted at the upper end of the cylinder, a plurality of blow-molding modules comprising inner mold sleeves and outer mold sleeves are vertically connected to the periphery of the lower part, when the blow-molding drum is far away from the compression molding cylinder, the blow-molding pipes and the modules move towards the bottle opening sleeve and the modules are closed, and when the blow-molding drum is close, the blow-molding drum is far away from the bottle opening sleeve and the modules are opened. The bottles are continuously produced at a high speed in a compression molding and blow molding combined mode, the efficiency can be improved, and the cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of bottle manufacturing technology and relates to a high-efficiency bottle blow molding production device and method. Background Technology

[0002] With the rapid development of the modern packaging industry, plastic bottles have become widely used in various fields such as food, beverages, pharmaceuticals, and daily chemicals due to their advantages such as light weight, transparency, corrosion resistance, ease of molding, and convenient transportation. Among them, polyethylene terephthalate (PET) has become the preferred material for producing transparent packaging bottles due to its excellent transparency, mechanical strength, airtightness, and food safety.

[0003] Currently, the mainstream production process for PET plastic bottles mainly adopts the "injection molding-stretching-blow molding" technology. This process is usually divided into two stages: the first stage is the injection molding of the preform, in which dried PET granules are heated to a molten state (about 260–290℃) in an injection molding machine and injected into a mold with a bottle neck structure. After cooling, a tubular preform is formed. The second stage is blow molding, in which the preform is fed into a blow molding machine and uniformly heated to a high-elastic state (about 100–120℃) in an infrared heating furnace. Then, it is axially stretched in the mold using a stretching rod and radially inflated with high-pressure gas, so that the preform is stretched in both directions and fits the inner wall of the mold. Finally, it is cooled and shaped into a plastic bottle of the desired shape.

[0004] However, existing PET bottle production processes have significant limitations. Since injection molding and blow molding are typically completed on different equipment or production lines, preforms must undergo cooling, storage, and transfer after injection molding before entering the blow molding process. During this process, small preforms require multiple pretreatment steps, including sorting, arranging, and heating, before entering the blow molding stage. This not only results in a complex and time-consuming production process but also necessitates the use of multiple independent pieces of equipment, such as injection molding machines, preform conveying systems, heating furnaces, and blow molding machines, leading to high equipment investment costs, large space requirements, and limited automation integration. Furthermore, the increased intermediate steps also cause problems such as repeated energy consumption, discontinuous production cycles, and low efficiency, making it difficult to meet the modern packaging industry's demands for efficient, energy-saving, and integrated production. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency bottle blow molding production apparatus and method, which uses a combination of compression molding and blow molding to produce bottles, enabling continuous high-speed production, effectively improving production efficiency and reducing costs.

[0006] To solve the above technical problems, the present invention provides a high-efficiency bottle blow molding production device, including a compression molding cylinder and a blow molding cylinder arranged opposite to each other. A compression molding drum is rotatably connected to the middle of the compression molding cylinder, and a blow molding drum is rotatably connected to the middle of the blow molding cylinder. The compression molding drum and the blow molding drum are driven to rotate by a drive motor. A transmission chain that rotates with the compression molding drum and the blow molding drum is connected to the middle of the compression molding drum and the blow molding drum. Multiple bottle neck sleeves are connected to the outer side of the transmission chain.

[0007] The upper outer periphery of the compression molding cylinder is provided with multiple compression molding upper sliding sleeves, each of which is slidably connected to a compression molding punch shaft. The lower outer periphery of the compression molding cylinder is provided with multiple compression molding lower sliding sleeves, each of which is slidably connected to a compression molding die sleeve with an upward opening, away from the blow molding cylinder. The compression molding punch shaft and the compression molding die sleeve are both pressed towards the bottle mouth sleeve, close to the blow molding cylinder, and the compression molding punch shaft and the compression molding die sleeve are both moved outward away from the bottle mouth sleeve.

[0008] The upper outer periphery of the blow molding cylinder is provided with multiple upper blow molding sleeves, each of which is slidably connected to an air blowing pipe. The upper end of the blow molding cylinder is equipped with a high-pressure air pump that is connected to the upper end of each air outlet pipe. The lower outer periphery of the blow molding cylinder is vertically slidably connected with multiple blow molding modules. Each blow molding module includes an inner mold sleeve and an outer mold sleeve, which are away from the compression molding cylinder. The air blowing pipe and the blow molding module move towards the bottle mouth sleeve, and the blow molding module is closed and close to the compression molding cylinder. The air blowing pipe and the blow molding module move outward away from the bottle mouth sleeve, and the blow molding module is open.

[0009] A plastic melt feeding module and a bottle demolding module are provided between the compression molding cylinder and the blow molding cylinder.

[0010] The present invention is further configured such that a drive motor for driving the rotation of the compression molding cylinder is installed inside the compression molding cylinder, a drive motor for driving the rotation of the blow molding cylinder is installed inside the blow molding cylinder, and sprocket rings are provided on the outer periphery of the middle part of the compression molding cylinder and the outer periphery of the middle part of the blow molding cylinder, and the transmission chain meshes with the two sprocket rings.

[0011] The present invention is further configured such that the outer wall of the middle part of the compression molding cylinder and the outer wall of the middle part of the blow molding cylinder are both provided with mounting grooves inward, each drive motor is installed in the corresponding mounting groove, the inner wall of the compression molding cylinder and the inner wall of the blow molding cylinder are provided with internal gear rings at the corresponding mounting grooves, the power output shaft of each drive motor is connected to a drive gear, and each mounting groove is rotatably connected with a transmission gear meshing between the corresponding internal gear ring and the corresponding drive gear.

[0012] The present invention is further configured such that a first upper annular guide rail and a first lower annular guide rail are respectively provided on the upper and lower ends of the compression cylinder on the outer periphery of the compression cylinder. The first upper annular guide rail is divided into a first horizontal lifting section close to the blow molding cylinder and a first horizontal pressing section away from the blow molding cylinder. The connection between the first horizontal lifting section and the first horizontal pressing section is smoothly transitioned. Each compression punch shaft is provided with a first upper sliding shaft that is slidably connected to the first upper annular guide rail at its upper end. Each compression punch shaft is provided with an upper pressing ring that cooperates with the upper edge of the bottle neck sleeve below the compression upper sliding sleeve.

[0013] The first lower annular guide rail is divided into a first horizontal pull-down section close to the blow-molded cylinder and a first horizontal press-up section away from the blow-molded cylinder. The connection between the first horizontal pull-down section and the first horizontal press-up section is smoothly transitioned. The lower end of each molding die sleeve is provided with a first sliding shaft that is slidably connected to the first lower annular guide rail. The upper edge of each molding die sleeve is provided with a press-up ring that cooperates with the lower edge of the bottle neck sleeve.

[0014] The outer periphery of the blow-molded cylinder is provided with a second upper annular guide rail and a second lower annular guide rail at the upper and lower ends of the compression molding cylinder, respectively. The second upper annular guide rail is divided into a second horizontal lifting section close to the compression molding cylinder and a second horizontal pressing section away from the compression molding cylinder. The connection between the second horizontal lifting section and the second horizontal pressing section is smoothly transitioned. The upper end of each air blowing pipe is provided with a second upper sliding shaft that is slidably connected to the second upper annular guide rail.

[0015] The second lower annular guide rail is divided into a second horizontal pull-down section close to the compression cylinder and a second horizontal press-up section away from the compression cylinder. The connection between the second horizontal pull-down section and the second horizontal press-up section is smoothly transitioned. Each inner mold sleeve is provided with a vertical connecting strip downwards, and each vertical connecting strip is provided with a second sliding shaft that is slidably connected to the second lower annular guide rail.

[0016] The present invention is further configured such that a horizontally arranged hollow air injection ring, which is fitted over the high-pressure air pump, is rotatably connected to the upper end of the blow-molded cylinder. The hollow air injection ring is connected to the upper part of the blow-molded rotary cylinder through multiple inverted L-shaped connecting strips arranged in a circle. The hollow air injection ring is divided into multiple air injection chambers corresponding to the air blowing pipes by partitions. Multiple air guide hoses corresponding to the air blowing pipes are connected to the outer side of the hollow air injection ring. Each air blowing pipe is connected to the corresponding air injection chamber through the air guide hose.

[0017] The hollow gas injection ring has multiple air inlets on its inner side, each corresponding to and communicating with the gas injection chamber. An arc-shaped gas filling ring is provided at the upper end of the blow-molded cylinder inside the hollow gas injection ring. The arc-shaped gas filling ring is connected to the outlet end of the high-pressure air pump. The arc-shaped gas filling ring is located on the side away from the compression molding cylinder. The outer side of the arc-shaped gas filling ring is open and is slidably and sealed to the inner side of the hollow gas injection ring, so that the blowing pipe moving downward toward the bottle neck sleeve can communicate with the arc-shaped gas filling ring.

[0018] The present invention is further configured such that each inner mold sleeve is recessed inward on the side facing the corresponding outer mold sleeve to form an inner bottle mold groove, each outer mold sleeve is recessed inward on the side facing the corresponding inner mold sleeve to form an outer bottle mold groove, each inner mold sleeve has multiple limiting slide shafts on its edge facing the corresponding outer mold sleeve, each outer mold sleeve has multiple limiting slide holes on its edge that are slidably connected to the corresponding limiting slide shafts, each limiting slide shaft has a limiting cap through the corresponding limiting slide hole at its free end, and each limiting slide shaft is fitted with a support spring located between the corresponding inner mold sleeve and the corresponding outer mold sleeve.

[0019] Each outer mold sleeve is made of a metal material that can be magnetically attracted. On the side of the outer wall of the blow-molded cylinder away from the compression-molded cylinder, multiple magnetic grooves are opened at the position after the blow-molded module moves up. Each magnetic groove is equipped with a strong magnet, so that after the blow-molded module moves up, the outer mold sleeve can close with the inner mold sleeve under the magnetic attraction of the strong magnet.

[0020] The invention is further configured such that each inner mold sleeve is provided with a vertically arranged vertical slide bar on the side facing the blow-molded cylinder, and the blow-molded rotary cylinder is provided with multiple vertical slide grooves below the transmission chain, which are slidably connected to the vertical slide bars one by one.

[0021] The present invention is further configured such that the plastic frit feeding module includes a molten material cylinder near the compression cylinder, the upper end of the molten material cylinder is connected to an extrusion port, a feeding hopper is provided on one side of the molten material cylinder, the lower end of the feeding hopper is connected to the lower part of the molten material cylinder through a feeding pipe, a spiral extrusion rod is rotatably connected inside the molten material cylinder, an extrusion motor for driving the spiral extrusion rod to rotate is installed at the lower end of the molten material cylinder, and a plurality of electric heating rings are provided on the outer periphery of the molten material cylinder along its height direction;

[0022] It also includes a transfer frame located between the melting cylinder and the transmission chain. The transfer frame is rotatably connected to a horizontally arranged turntable. A transfer motor for driving the turntable to rotate is installed on the transfer frame. The turntable has multiple circumferentially distributed C-shaped notches on its outer periphery. The opening of each notch is inclined in the same direction of rotation. The turntable and the edge of each notch are provided with C-shaped scrapers with downward cross-sections. The upper end of the extrusion port is at the same height as the lower end of the scraper. The scraper is higher than the bottle neck sleeve. A telescopic motor is installed on the transfer frame at the position corresponding to the notch and directly above the bottle neck sleeve. The telescopic shaft of the telescopic motor is connected downward to a push shaft that can extend into the scraper.

[0023] The present invention is further configured such that the bottle demolding module includes strip support plates located on both sides of the transmission chain and an extrusion rotary conveyor. The extrusion rotary conveyor includes a strip conveyor housing arranged along the length of the transmission chain and an extrusion conveyor belt movably arranged within the strip conveyor housing. The strip conveyor housing has an opening on one side facing the transmission chain, allowing the extrusion conveyor belt to contact the bottle. A conveyor motor for driving the extrusion conveyor belt is installed on the strip conveyor housing.

[0024] This invention also discloses a high-efficiency bottle blow molding production method, comprising the following steps:

[0025] S1. The drive motor drives the compression molding drum and the blow molding drum to rotate, and drives the transmission chain to carry the bottle mouth sleeve to move.

[0026] S2. The plastic granules are heated to 150℃-180℃, and the molten plastic is extruded through the plastic frit feeding module to form a plastic frit. The plastic frit is added to the bottle neck sleeve at the position of the compression molding cylinder near the blow molding cylinder.

[0027] S3. The bottle neck sleeve with plastic molten material gradually moves away from the blow molding cylinder along the transmission chain. During the process, the compression molding punch shaft and the compression molding die sleeve are both squeezed towards the bottle neck sleeve, and the plastic molten material is squeezed to form a small bottle preform.

[0028] S4. The small preform rotates half a turn around the compression cylinder with the bottle neck sleeve and moves toward the blow molding cylinder. During the process, the compression punch shaft and the compression die sleeve move away from the bottle neck sleeve, so that the small preform is released from the compression punch shaft and the compression die sleeve, and the small preform continues to move with the bottle neck sleeve.

[0029] S5. The small preform moves with the bottle neck sleeve to a position close to the blow molding cylinder. The air blowing tube moves downward and inserts into the small preform. The blow molding module covers the small preform upward, and then the blow molding module closes.

[0030] S6. During the rotation of the small preform around the blow molding cylinder, the high-pressure air pump introduces high-pressure gas into the small preform through the air blowing pipe and into the blow molding module, causing the preform to expand and fit tightly against the inner wall of the mold to form a complete bottle shape.

[0031] S7. The bottle then rotates half a turn around the blow-molded cylinder along the transmission chain, during which the bottle gradually cools and sets.

[0032] S8. When the bottle passes around the blow molding cylinder, the blow molding module opens and moves downward to release the bottle. The air blowing tube moves upward to be pulled out of the bottle, so that the bottle continues to move with the bottle neck sleeve.

[0033] S9. Finally, the bottle separates from the bottle neck sleeve and falls off under the action of the bottle demolding module.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] Firstly, this equipment adopts an integrated production method combining compression molding and blow molding, eliminating the cumbersome intermediate steps of preform cooling, storage, transfer, and multiple pretreatment processes in traditional processes. This makes the entire production process simpler and smoother, significantly shortens the production cycle, effectively improves production efficiency, and better meets the demands of the modern packaging industry for high-efficiency production.

[0036] Secondly, integrated production reduces the need for separate equipment, eliminating the need for multiple devices such as injection molding machines, preform conveying systems, heating furnaces, and blow molding machines. This not only lowers equipment investment costs but also reduces the space occupied by equipment, allowing for more efficient use of the production site. At the same time, the reduced number of devices also simplifies automation integration, facilitating more efficient automated production control.

[0037] Third, the reduction of intermediate steps avoids the repeated consumption of energy in multiple stages. In traditional processes, there is additional energy loss during the transfer and pretreatment of preforms. However, the integrated production of this device avoids these problems, reduces energy consumption in the production process, and achieves energy-saving production. Furthermore, the production cycle is more continuous and stable, avoiding production stagnation or uneven rhythm caused by intermediate steps, further improving production efficiency and product quality.

[0038] Fourth, in this device, the compression molding cylinder and the blow molding cylinder are arranged opposite each other, and multiple bottle neck sleeves are connected by a transmission chain. Combined with various molds and moving parts on the compression molding and blow molding cylinders, continuous high-speed production is achieved. The precise and efficient coordinated operation between the components enables the production of a large number of bottles in a short time, significantly increasing the output per unit time. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 Used to demonstrate the connection structure of the compression-molded cylindrical part;

[0041] Figure 3 Used to demonstrate the positional relationship between the bottle neck sleeve, the compression molding punch shaft, and the compression molding die sleeve;

[0042] Figure 4 It is a partial cross-sectional view used to show the drive motor inside the compression-molded cylinder;

[0043] Figure 5 Used to display the internal gear ring inside the compression molding drum;

[0044] Figure 6 Used to demonstrate the connection structure of the blow-molded cylindrical part;

[0045] Figure 7 Used to demonstrate the overall structure of a blow-molded cylinder;

[0046] Figure 8 Used to display the internal gear ring inside the blow molding drum;

[0047] Figure 9 Used to demonstrate the connection between the air blowing tube and the hollow air injection ring;

[0048] Figure 10 Used to display the open state of the blow molding module;

[0049] Figure 11 Used to demonstrate the overall structure of the plastic frit feeding module;

[0050] Figure 12 This is used to demonstrate the positional relationship between the bottle demolding module and the drive chain.

[0051] Among them, 1. Compression molding cylinder; 2. Blow molding cylinder; 3. Compression molding drum; 4. Blow molding drum; 5. Mounting groove; 6. Drive motor; 7. Internal gear ring; 8. Drive gear; 9. Transmission gear; 10. Transmission chain; 11. Sprocket ring; 12. Bottle neck sleeve; 13. Upper compression molding sleeve; 14. Compression molding punch shaft; 15. Lower compression molding sleeve; 16. Compression molding die sleeve; 17. First upper annular guide rail; 18. First lower annular guide rail; 19. First upper sliding shaft; 20. Upper pressure ring; 21. First lower sliding shaft; 22. Lower pressure ring; 23. Blow molding upper sleeve; 24. Air blowing pipe; 25. Inner mold sleeve; 26. Outer mold sleeve; 27. Vertical slide bar; 28. Vertical slide groove; 29. ​​Inner bottle mold groove; 30. Outer bottle mold groove; 31. Limiting slide shaft; 32. Limiting 33. Cap; 34. Support spring; 35. Strong magnet; 36. Second upper annular guide rail; 37. Second lower annular guide rail; 38. Second upper sliding shaft; 39. Vertical connecting strip; 40. Second lower sliding shaft; 41. High-pressure air pump; 42. Hollow air injection ring; 43. Inverted L-shaped connecting strip; 44. Air guide hose; 45. Air inlet; 46. Arc-shaped air filling ring; 47. Melting cylinder; 48. Extrusion port; 49. Feeding hopper; 50. Feeding pipe; 51. Spiral extrusion rod; 52. Extrusion motor; 53. Electric heating ring; 54. Transfer frame; 55. Turntable; 56. Notch; 57. Scraper; 58. Telescopic motor; 59. Push shaft; 60. Strip support plate; 61. Strip conveyor housing; 62. Extrusion conveyor belt; 63. Conveyor motor; 64. Transfer motor. Detailed Implementation

[0052] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed explanation of the efficient bottle blow molding production apparatus and method proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this invention. The same or similar reference numerals in the drawings represent the same or similar parts.

[0053] Example 1, referring to Figure 1-12 A high-efficiency bottle blow molding production device includes a compression molding cylinder 1 and a blow molding cylinder 2 arranged opposite to each other. A compression molding drum 3 is rotatably connected to the middle of the compression molding cylinder 1, and a blow molding drum 4 is rotatably connected to the middle of the blow molding cylinder 2. An inwardly extending mounting groove 5 is formed on the outer wall of the middle section of both the compression molding cylinder 1 and the blow molding cylinder 2. A drive motor 6 is installed in each mounting groove 5. An internal gear ring 7 is provided on the inner wall of both the compression molding drum 3 and the blow molding drum 4 at the corresponding mounting groove 5. A drive gear 8 is connected to the power output shaft of each drive motor 6. A transmission gear 9 is rotatably connected in each mounting groove 5, meshing between the corresponding internal gear ring 7 and the corresponding drive gear 8. The two drive motors 6 drive the compression molding drum 3 and the blow molding drum 4 to rotate synchronously.

[0054] A transmission chain 10 is connected to the middle of the compression molding drum 3 and the blow molding drum 4, and rotates with them. A sprocket ring 11 is provided on the outer periphery of the middle part of the compression molding drum 3 and the outer periphery of the middle part of the blow molding drum 4. The transmission chain 10 meshes with the two sprocket rings 11. Multiple bottle neck sleeves 12 distributed along its length are connected to the outer side of the transmission chain 10. Both the upper and lower ends of the bottle neck sleeve 12 are open. The inner wall of the bottle neck sleeve 12 is provided with a threaded mold so that the bottle neck can have threads.

[0055] The upper outer periphery of the compression drum 3 is provided with multiple compression upper sliding sleeves 13 corresponding to the positions of the bottle neck sleeve 12. Each compression upper sliding sleeve 13 is slidably connected to a compression punch shaft 14. The lower outer periphery of the compression drum 3 is provided with multiple compression lower sliding sleeves 15 corresponding to the positions of the bottle neck sleeve 12. Each compression lower sliding sleeve 15 is slidably connected to a compression concave sleeve 16 with its opening facing upward. The compression punch shaft 14 extends into the bottle neck sleeve 12 and the compression concave sleeve 16, which can compress the plastic melt into a small preform.

[0056] A first upper annular guide rail 17 and a first lower annular guide rail 18 are respectively provided at the upper and lower ends of the compression cylinder 3 on the outer periphery of the compression cylinder 1. The first upper annular guide rail 17 is divided into a first horizontal lifting section close to the compression cylinder 2 and a first horizontal pressing section away from the compression cylinder 2. The connection between the first horizontal lifting section and the first horizontal pressing section is smoothly transitioned. Each compression punch shaft 14 is provided with a first upper sliding shaft 19 that is slidably connected to the first upper annular guide rail 17 at its upper end. Each compression punch shaft 14 is provided with an upper pressure ring 20 below the compression upper sliding sleeve 13, which cooperates with the upper edge of the bottle neck sleeve 12. The upper pressure ring 20 presses against the upper end of the bottle neck sleeve 12 to prevent the plastic melt from being squeezed outward.

[0057] The first lower annular guide rail 18 is divided into a first horizontal downward pull section close to the blow molding cylinder 2 and a first horizontal upward press section away from the blow molding cylinder 2. The connection between the first horizontal downward pull section and the first horizontal upward press section is smooth. Each compression molding die sleeve 16 has a first downward sliding shaft 21 slidably connected to the first lower annular guide rail 18 at its lower end. Each compression molding die sleeve 16 has a lower pressing ring 22 at its upper edge that mates with the lower edge of the bottle neck sleeve 12. The lower pressing ring 22 presses against the lower end of the bottle neck sleeve 12 to prevent the plastic melt from being squeezed outward.

[0058] With the first upper annular guide rail 17 and the first lower annular guide rail 18, the compression punch shaft 14 and the compression die sleeve 16 are pressed towards the bottle neck sleeve 12 away from the blow molding cylinder 2, extruding the plastic melt into a small preform. As the preform approaches the blow molding cylinder 2, the compression punch shaft 14 and the compression die sleeve 16 move outward away from the bottle neck sleeve 12, allowing the small preform to be ejected from the compression punch shaft 14 and the compression die sleeve 16.

[0059] The upper outer periphery of the blow molding drum 4 is provided with multiple upper blow molding sleeves 23 corresponding to the positions of the bottle neck sleeves 12. Each upper blow molding sleeve 23 is slidably connected to an air blowing pipe 24. The lower outer periphery of the blow molding drum 4 is vertically slidably connected with multiple blow molding modules corresponding to the positions of the bottle neck sleeves 12. Each blow molding module includes an inner mold sleeve 25 close to the blow molding cylinder 2 and an outer mold sleeve 26 connected to the side of the inner mold sleeve 25 away from the blow molding cylinder 2. Each inner mold sleeve 25 is provided with a vertically arranged vertical slide bar 27 on the side facing the blow molding cylinder 2. The blow molding drum 4 is vertically provided with multiple vertical slide grooves 28 below the transmission chain 10, which are slidably connected to the vertical slide bars 27 one by one, so that the blow molding modules can slide back and forth along the height direction of the blow molding drum 4.

[0060] Each inner mold sleeve 25 is recessed inward on the side facing the corresponding outer mold sleeve 26 to form an inner bottle mold groove 29. Each outer mold sleeve 26 is recessed inward on the side facing the corresponding inner mold sleeve 25 to form an outer bottle mold groove 30. Each inner mold sleeve 25 has four limiting sliding shafts 31 on its edge facing the corresponding outer mold sleeve 26. Each outer mold sleeve 26 has four limiting sliding holes (figure omitted) on its edge that are slidably connected to the corresponding limiting sliding shafts 31. Each limiting sliding shaft 31 has a limiting cap 32 that passes through the corresponding limiting sliding hole. Each limiting sliding shaft 31 is fitted with a support spring 33 located between the corresponding inner mold sleeve 25 and the corresponding outer mold sleeve 26. Under the action of the support spring 33, when no external force is applied, the outer mold sleeve 26 moves away from the inner mold sleeve 25.

[0061] Each outer mold sleeve 26 is made of a magnetically attracted metal material. On the side of the outer wall of the blow-molded cylinder 2 away from the compression-molded cylinder 1, multiple magnetic slots are provided at the position after the blow-molding module moves up (figure omitted). Each magnetic slot is equipped with a strong magnet 34, so that after the blow-molding module moves up, the outer mold sleeve 26 can close with the inner mold sleeve 25 under the magnetic attraction of the strong magnet 34, so that the blow-molding module can provide sufficient support during the blow-molding expansion of the small preform.

[0062] A second upper annular guide rail 35 and a second lower annular guide rail 36 are respectively provided on the upper and lower ends of the outer periphery of the blow-molded cylinder 2 and the compression cylinder 3. The second upper annular guide rail 35 is divided into a second horizontal lifting section close to the compression cylinder 1 and a second horizontal pressing section away from the compression cylinder 1. The connection between the second horizontal lifting section and the second horizontal pressing section is smoothly transitioned. Each air blowing pipe 24 is provided with a second upper sliding shaft 37 that is slidably connected to the second upper annular guide rail 35 at its upper end.

[0063] The second lower annular guide rail 36 is divided into a second horizontal pull-down section close to the compression cylinder 1 and a second horizontal press-up section away from the compression cylinder 1. The connection between the second horizontal pull-down section and the second horizontal press-up section is smoothly transitioned. Each inner mold sleeve 25 is provided with a vertical connecting strip 38, and each vertical connecting strip 38 is provided with a second sliding shaft 39 that is slidably connected to the second lower annular guide rail 36.

[0064] The second upper annular guide rail 35 and the second lower annular guide rail 36 move away from the compression molding cylinder 1. The air blowing pipe 24 and the blow molding module move towards the bottle mouth sleeve 12, causing the small preform to expand with high-pressure gas inside the blow molding module and move closer to the compression molding cylinder 1. The air blowing pipe 24 and the blow molding module move outward away from the bottle mouth sleeve 12, eventually causing the air blowing pipe 24 to be pulled out of the bottle and the bottle to be removed from the blow molding module.

[0065] A high-pressure air pump 40 is installed at the upper end of the blow-molded cylinder 2. A hollow air injection ring 41, which is horizontally arranged and fitted with the high-pressure air pump 40, is rotatably connected to the upper end of the blow-molded cylinder 2. The hollow air injection ring 41 is connected to the upper part of the blow-molding drum 4 through multiple inverted L-shaped connecting strips 42 arranged in a circle. The hollow air injection ring 41 is divided into multiple air injection chambers corresponding to the air blowing pipes 24 by partitions (figure omitted). Multiple air guiding hoses 43, which are connected to the outer side of the hollow air injection ring 41, are connected to the outer side of the hollow air injection ring 41. Each air blowing pipe 24 is connected to the corresponding air injection chamber through the air guiding hose 43, so that the hollow air injection ring 41 can rotate with the blow-molding drum 4 and the air blowing pipes 24 can always be connected to the hollow air injection ring 41.

[0066] The hollow gas injection ring 41 has multiple air inlets 44 that are connected to the gas injection chambers one by one on its inner side. The upper end of the blow-molded cylinder 2 is provided with an arc-shaped gas filling ring 45 inside the hollow gas injection ring 41. The arc-shaped gas filling ring 45 is connected to the outlet end of the high-pressure air pump 40. The arc-shaped gas filling ring 45 is located on the side away from the compression molding cylinder 1. The outer side of the arc-shaped gas filling ring 45 is open and is slidably connected to the inner side of the hollow gas injection ring 41, so that the blowing pipe 24 moving downward toward the bottle neck sleeve 12 can be connected to the arc-shaped gas filling ring 45.

[0067] A plastic molten material feeding module and a bottle demolding module are provided between the compression molding cylinder 1 and the blow molding cylinder 2. The plastic molten material feeding module includes a molten material cylinder 46 that is vertically arranged close to the compression molding cylinder 1. The upper end of the molten material cylinder 46 is connected to an extrusion port 47. A feeding hopper 48 is provided on one side of the molten material cylinder 46. The lower end of the feeding hopper 48 is connected to the lower part of the molten material cylinder 46 through a feeding pipe 49. A spiral extrusion rod 50 is rotatably connected inside the molten material cylinder 46. An extrusion motor 51 for driving the spiral extrusion rod 50 to rotate is installed at the lower end of the molten material cylinder 46. Multiple electric heating rings 52 are arranged along the height direction on the outer periphery of the molten material cylinder 46. The electric heating rings 52 gradually heat and melt the plastic particles in the molten material cylinder 46, and under the action of the spiral extrusion rod 50, gradually extrude the molten plastic upward.

[0068] It also includes a material transfer frame 53 located between the melting cylinder 46 and the transmission chain 10. The material transfer frame 53 is rotatably connected to a horizontally set turntable 54. A material transfer motor 63 for driving the turntable 54 to rotate is installed on the material transfer frame 53. The outer periphery of the turntable 54 has multiple circumferentially distributed C-shaped notches 55. The opening of each notch 55 is inclined in the same direction of rotation. A scraper blade 56 with a C-shaped cross section is set downward on the edge of the turntable 54 and each notch 55. The upper end of the extrusion port 47 is at the same height as the lower end of the scraper blade 56. The scraper blade 56 is higher than the bottle neck sleeve 12, so that the rotating scraper blade 56 can scrape away the molten plastic at the extrusion port 47. A telescopic motor 57 is installed on the transfer rack 53 at the position corresponding to the notch 55 and directly above the displacement bottle neck sleeve 12. The telescopic shaft of the telescopic motor 57 is connected downward to a push shaft 58 that can extend into the scraper blade 56. Finally, the telescopic motor 57 pushes the plastic melt on the scraper blade 56 into the bottle neck sleeve 12 through the push shaft 58.

[0069] The bottle demolding module includes a strip support plate 59 located on both sides of the transmission chain 10 and an extrusion rotary conveyor. The extrusion rotary conveyor includes a strip conveyor housing 60 arranged along the length of the transmission chain 10 and an extrusion conveyor belt 61 movably arranged inside the strip conveyor housing 60. The strip conveyor housing 60 has an opening on one side facing the transmission chain 10, so that the extrusion conveyor belt 61 can contact the bottle. A conveyor motor 62 for driving the extrusion conveyor belt 61 is installed on the strip conveyor housing 60. The conveyor motor 62 drives the extrusion conveyor belt 61 to move in the opposite direction to the transmission chain 10. When the bottle enters between the strip support plate 59 and the extrusion conveyor belt 61, the strip support plate 59 and the extrusion conveyor belt 61 clamp the bottle. The extrusion conveyor belt 61 moving in the opposite direction drives the bottle to rotate, so that the bottle is released from the threaded connection with the bottle neck sleeve 12 and falls off the bottle neck sleeve 12.

[0070] Example 2: A high-efficiency bottle blow molding production method, using a high-efficiency bottle blow molding production apparatus as described in Example 1, includes the following steps:

[0071] S1. The drive motor 6 drives the compression molding drum 3 and the blow molding drum 4 to rotate, and drives the transmission chain 10 to carry the bottle mouth sleeve 12 to move.

[0072] S2. The plastic granules are heated to 150℃-180℃. The transfer motor 63 drives the turntable 54 to rotate. The rotating scraper 56 can scrape away the molten plastic at the extrusion port 47. The molten plastic is extruded to form a plastic floc through the plastic floc feeding module. The telescopic motor 57 pushes the plastic floc on the scraper 56 into the bottle mouth sleeve 12 through the push shaft 58.

[0073] S3. Under the guidance of the first upper annular guide rail 17 and the first lower annular guide rail 18, the bottle neck sleeve 12 with plastic melt moves gradually away from the blow molding cylinder 2 along the transmission chain 10. During the process, the compression molding punch shaft 14 and the compression molding die sleeve 16 are squeezed towards the bottle neck sleeve 12, and the plastic melt is squeezed to form a small bottle preform.

[0074] S4. The small preform rotates half a turn around the compression cylinder 1 with the bottle neck sleeve 12 and moves towards the blow molding cylinder 2. During the process, the compression punch shaft 14 and the compression die sleeve 16 move away from the bottle neck sleeve 12, so that the small preform is released from the compression punch shaft 14 and the compression die sleeve 16, and the small preform continues to move with the bottle neck sleeve 12.

[0075] S5. The small preform moves with the bottle neck sleeve 12 to near the blow molding cylinder 2. Under the guidance of the second upper annular guide rail 35 and the second lower annular guide rail 36, the air blowing pipe 24 moves downward and is inserted into the small preform. The blow molding module covers the small preform upward. Then, under the attraction of the strong magnet 34, the outer mold sleeve 26 can close with the inner mold sleeve 25 under the magnetic attraction of the strong magnet 34, and the blow molding module closes.

[0076] S6. During the rotation of the small preform around the blow molding cylinder 2, the high-pressure air pump 40, through the hollow air injection ring 41 that rotates with the blow molding cylinder 4, introduces high-pressure gas into the small preform through the air blowing pipe 24, and introduces high-pressure gas into the small preform in the blow molding module, causing the preform to expand and stick tightly to the inner wall of the mold to form a complete bottle shape.

[0077] S7. The bottle then rotates half a turn around the blow molding cylinder 2 along the transmission chain 10. During the process, the bottle gradually cools and sets. The cooling time is 10-12 seconds. If the rotation speed is faster, additional cooling equipment, such as air cooling, is required.

[0078] S8. When the bottle passes around the blow molding cylinder 2, the blow molding module leaves the strong magnet 34, the outer mold sleeve 26 loses its attraction and moves away from the inner mold sleeve 25 under the action of the support spring 33, causing the blow molding module to open and the blow molding module to move downward to remove the bottle. The air blowing pipe 24 moves upward to be pulled out of the bottle, so that the bottle continues to move with the bottle mouth sleeve 12.

[0079] S9. The conveyor motor 62 drives the extrusion conveyor belt 61 to move in the opposite direction to the transmission chain 10. When the bottle enters between the strip support plate 59 and the extrusion conveyor belt 61, the strip support plate 59 and the extrusion conveyor belt 61 clamp the bottle. The extrusion conveyor belt 61, moving in the opposite direction, causes the bottle to rotate, thus disengaging it from the threaded connection with the bottle neck sleeve 12 and causing it to fall off the bottle neck sleeve 12. It should also be noted that all terms such as "setup" and similar descriptive words in this application (especially the specification) indicate that there is or exists a connection relationship between two structures. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated further. For example, "m is provided with n" only means that the m structure has the n structure, and whether the two are connected by welding, riveting, adhesive or integral molding is within the scope of protection of this application; another example is "x is rotatably provided with y" only means that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other possible methods, are all within the scope of protection of this application.

[0080] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A high-efficiency bottle blow molding production apparatus, comprising a compression molding cylinder (1) and a blow molding cylinder (2) arranged opposite to each other, characterized in that, The compression cylinder (1) is rotatably connected to the middle of a compression cylinder (3), and the blow cylinder (2) is rotatably connected to the middle of a blow cylinder (4). The compression cylinder (3) and the blow cylinder (4) are driven to rotate by a drive motor (6). The compression cylinder (3) and the blow cylinder (4) are connected to the middle of a transmission chain (10) that rotates with them. Multiple bottle neck sleeves (12) are connected to the outside of the transmission chain (10). The upper outer periphery of the compression cylinder (3) is provided with a plurality of compression upper sliding sleeves (13), each compression upper sliding sleeve (13) is slidably connected to a compression punch shaft (14), the lower outer periphery of the compression cylinder (3) is provided with a plurality of compression lower sliding sleeves (15), each compression lower sliding sleeve (15) is slidably connected to a compression concave sleeve (16) with an opening facing upward, away from the blow molding cylinder (2), the compression punch shaft (14) and the compression concave sleeve (16) are both pressed toward the bottle mouth sleeve (12), and when they are close, they move away; The upper outer periphery of the blow molding cylinder (4) is provided with multiple blow molding upper sliding sleeves (23), each blow molding upper sliding sleeve (23) is slidably connected to an air blowing pipe (24), the upper end of the blow molding cylinder (2) is equipped with a high-pressure air pump (40) that is connected to each air outlet pipe, and the lower outer periphery of the blow molding cylinder (4) is vertically slidably connected with multiple blow molding modules, each blow molding module including an inner mold sleeve (25) and an outer mold sleeve (26), away from the compression molding cylinder (1), the air blowing pipe (24) and the blow molding module both move towards the bottle mouth sleeve (12), and the blow molding module is closed when it is close to the bottle mouth sleeve (12), and the blow molding module is opened when it is close to the bottle mouth sleeve (12). A plastic melt feeding module and a bottle demolding module are provided between the compression molding cylinder (1) and the blow molding cylinder (2).

2. The high-efficiency bottle blow molding production apparatus according to claim 1, characterized in that, The compression cylinder (1) is equipped with a drive motor (6) for driving the compression drum (3) to rotate, and the blow molding cylinder (2) is equipped with a drive motor (6) for driving the blow molding drum (4) to rotate. Sprocket rings (11) are provided on the outer periphery of the middle part of the compression drum (3) and the outer periphery of the middle part of the blow molding drum (4). The transmission chain (10) meshes with the two sprocket rings (11).

3. The high-efficiency bottle blow molding production apparatus according to claim 2, characterized in that, The outer wall of the middle part of the compression cylinder (1) and the outer wall of the middle part of the blow molding cylinder (2) are both provided with mounting grooves (5) inward. Each drive motor (6) is installed in the corresponding mounting groove (5). The inner wall of the compression cylinder (3) and the inner wall of the blow molding cylinder (4) are provided with internal gear rings (7) at the corresponding mounting grooves (5). The power output shaft of each drive motor (6) is connected to a drive gear (8). Each mounting groove (5) is rotatably connected with a transmission gear (9) meshing between the corresponding internal gear ring (7) and the corresponding drive gear (8).

4. The high-efficiency bottle blow molding production apparatus according to claim 1, characterized in that, The outer periphery of the compression cylinder (1) is provided with a first upper annular guide rail (17) and a first lower annular guide rail (18) at the upper and lower ends of the compression cylinder (3). The first upper annular guide rail (17) is divided into a first horizontal lifting section close to the blow molding cylinder (2) and a first horizontal pressing section away from the blow molding cylinder (2). The connection between the first horizontal lifting section and the first horizontal pressing section is smoothly transitioned. The upper end of each compression molding punch shaft (14) is provided with a first upper sliding shaft (19) that is slidably connected to the first upper annular guide rail (17). Each compression molding punch shaft (14) is provided with an upper pressure ring (20) that cooperates with the upper edge of the bottle neck sleeve (12) below the compression upper sliding sleeve (13). The first lower annular guide rail (18) is divided into a first horizontal pull-down section close to the blow-molded cylinder (2) and a first horizontal press-up section away from the blow-molded cylinder (2). The connection between the first horizontal pull-down section and the first horizontal press-up section is smoothly transitioned. Each compression molding die sleeve (16) is provided with a first sliding shaft (21) that is slidably connected to the first lower annular guide rail (18) at its lower end. Each compression molding die sleeve (16) is provided with a lower press-up ring (22) that cooperates with the lower edge of the bottle neck sleeve (12) at its upper edge. The outer periphery of the blow-molded cylinder (2) is provided with a second upper annular guide rail (35) and a second lower annular guide rail (36) at the upper and lower ends of the compression cylinder (3). The second upper annular guide rail (35) is divided into a second horizontal lifting section close to the compression cylinder (1) and a second horizontal pressing section away from the compression cylinder (1). The connection between the second horizontal lifting section and the second horizontal pressing section is smoothly transitioned. The upper end of each air blowing pipe (24) is provided with a second upper sliding shaft (37) that is slidably connected to the second upper annular guide rail (35). The second lower annular guide rail (36) is divided into a second horizontal pull-down section close to the compression cylinder (1) and a second horizontal press-up section away from the compression cylinder (1). The connection between the second horizontal pull-down section and the second horizontal press-up section is smoothly transitioned. Each inner mold sleeve (25) is provided with a vertical connecting strip (38) downward. Each vertical connecting strip (38) is provided with a second sliding shaft (39) that is slidably connected to the second lower annular guide rail (36).

5. The high-efficiency bottle blow molding production apparatus according to claim 1, characterized in that, The upper end of the blow-molded cylinder (2) is rotatably connected to a horizontally arranged hollow air injection ring (41) that is fitted with the high-pressure air pump (40). The hollow air injection ring (41) is connected to the upper part of the blow-molded rotary cylinder (4) through multiple inverted L-shaped connecting strips (42) arranged in a circle. The hollow air injection ring (41) is divided into multiple air injection chambers corresponding to the air blowing pipes (24) by partitions. Multiple air guiding hoses (43) corresponding to the air blowing pipes (24) are connected to the outer side of the hollow air injection ring (41). Each air blowing pipe (24) is connected to the corresponding air injection chamber through the air guiding hose (43). The hollow gas injection ring (41) has multiple air inlets (44) that are connected to the gas injection chambers one by one on the inner side. The upper end of the blow-molded cylinder (2) is provided with an arc-shaped gas filling ring (45) inside the hollow gas injection ring (41). The arc-shaped gas filling ring (45) is connected to the outlet end of the high-pressure air pump (40). The arc-shaped gas filling ring (45) is located on the side away from the compression molding cylinder (1). The outer side of the arc-shaped gas filling ring (45) is open and is sealed and slidably connected to the inner side of the hollow gas injection ring (41), so that the blowing pipe (24) moving downward toward the bottle neck sleeve (12) can be connected to the arc-shaped gas filling ring (45).

6. The high-efficiency bottle blow molding production apparatus according to claim 1, characterized in that, Each inner mold sleeve (25) is recessed inward on the side facing the corresponding outer mold sleeve (26) to form an inner bottle mold groove (29), and each outer mold sleeve (26) is recessed inward on the side facing the corresponding inner mold sleeve (25) to form an outer bottle mold groove (30). Each inner mold sleeve (25) has multiple limiting slide shafts (31) on its edge facing the corresponding outer mold sleeve (26). Each outer mold sleeve (26) has multiple limiting slide holes that are slidably connected to the corresponding limiting slide shafts (31) on its edge. Each limiting slide shaft (31) has a limiting cap (32) through the corresponding limiting slide hole on its free end. Each limiting slide shaft (31) is fitted with a support spring (33) located between the corresponding inner mold sleeve (25) and the corresponding outer mold sleeve (26). Each outer mold sleeve (26) is made of a metal material that can be magnetically attracted. On the side of the outer wall of the blow-molded cylinder (2) away from the compression-molded cylinder (1), multiple magnetic slots are provided at the position after the blow-molded module moves up. Each magnetic slot is provided with a strong magnet (34) so ​​that after the blow-molded module moves up, the outer mold sleeve (26) can close with the inner mold sleeve (25) under the magnetic attraction of the strong magnet (34).

7. The high-efficiency bottle blow molding production apparatus according to claim 6, characterized in that, Each inner mold sleeve (25) is provided with a vertically arranged vertical slide bar (27) on the side facing the blow-molded cylinder (2). The blow-molded rotary cylinder (4) is provided with multiple vertical slide grooves (28) below the transmission chain (10) that are slidably connected to the vertical slide bars (27) one by one.

8. The high-efficiency bottle blow molding production apparatus according to claim 1, characterized in that, The plastic frit feeding module includes a melting cylinder (46) near the compression cylinder (1). The upper end of the melting cylinder (46) is connected to an extrusion port (47). A feeding hopper (48) is provided on one side of the melting cylinder (46). The lower end of the feeding hopper (48) is connected to the lower part of the melting cylinder (46) through a feeding pipe (49). A spiral extrusion rod (50) is rotatably connected inside the melting cylinder (46). An extrusion motor (51) for driving the spiral extrusion rod (50) to rotate is installed at the lower end of the melting cylinder (46). A plurality of electric heating rings (52) are provided on the outer periphery of the melting cylinder (46) along its height direction. It also includes a transfer frame (53) located between the melting cylinder (46) and the transmission chain (10). The transfer frame (53) is rotatably connected to a horizontally arranged turntable (54). A transfer motor (63) for driving the turntable (54) to rotate is installed on the transfer frame (53). The outer periphery of the turntable (54) has multiple circumferentially distributed and C-shaped notches (55). The opening of each notch (55) is inclined in the same direction of rotation. The turntable (54) and each notch (55) has a C-shaped scraper (56) with downward-facing edges. The upper end of the extrusion port (47) is at the same height as the lower end of the scraper (56). The scraper (56) is higher than the bottle neck sleeve (12). The transfer rack (53) is equipped with a telescopic motor (57) at the position corresponding to the notch (55) and directly above the bottle neck sleeve (12). The telescopic shaft of the telescopic motor (57) is connected downward to a push shaft (58) that can extend into the scraper (56).

9. The high-efficiency bottle blow molding production apparatus according to claim 1, characterized in that, The bottle demolding module includes strip support plates (59) located on both sides of the transmission chain (10) and an extrusion rotary conveyor. The extrusion rotary conveyor includes a strip conveyor housing (60) arranged along the length of the transmission chain (10) and an extrusion conveyor belt (61) movably arranged inside the strip conveyor housing (60). The strip conveyor housing (60) has an opening on one side facing the transmission chain (10) so that the extrusion conveyor belt (61) can contact the bottle. A conveyor motor (62) for driving the extrusion conveyor belt (61) is installed on the strip conveyor housing (60).

10. A high-efficiency bottle blow molding production method, using the high-efficiency bottle blow molding production apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The drive motor (6) drives the compression molding drum (3) and the blow molding drum (4) to rotate, and drives the transmission chain (10) to carry the bottle mouth sleeve (12) to move. S2. Heat the plastic granules to 150℃-180℃, and extrude the molten plastic to form a plastic melt through the plastic melt feeding module. Add the plastic melt into the bottle mouth sleeve (12) at the position of the compression molding cylinder (1) near the blow molding cylinder (2). S3. The bottle neck sleeve (12) with plastic melt moves gradually away from the blow molding cylinder (2) along the transmission chain (10). During the process, the compression molding punch shaft (14) and the compression molding die sleeve (16) are both squeezed towards the bottle neck sleeve (12), and the plastic melt is squeezed to form a small bottle preform. S4. The small preform rotates half a circle around the compression cylinder (1) with the bottle neck sleeve (12) and moves towards the blow molding cylinder (2). During this process, the compression molding punch shaft (14) and the compression molding die sleeve (16) move away from the bottle neck sleeve (12) so that the small preform is released from the compression molding punch shaft (14) and the compression molding die sleeve (16) and the small preform continues to move with the bottle neck sleeve (12). S5. The small preform moves with the bottle neck sleeve (12) to a position close to the blow molding cylinder (2), the air blowing tube (24) moves downward and inserts into the small preform, the blow molding module covers the small preform upward, and then the blow molding module closes. S6. During the rotation of the small preform around the blow molding cylinder (2), the high-pressure air pump (40) introduces high-pressure gas into the small preform through the air blowing pipe (24) into the blow molding module, causing the preform to expand and stick tightly to the inner wall of the mold to form a complete bottle shape. S7. The bottle then rotates half a circle around the blow-molded cylinder (2) along the transmission chain (10), during which the bottle gradually cools and solidifies. S8. When the bottle passes around the blow molding cylinder (2), the blow molding module opens and moves downward to remove the bottle. The air blowing pipe (24) moves upward to be pulled out of the bottle, so that the bottle continues to move with the bottle mouth sleeve (12). S9. Finally, under the action of the bottle demolding module, the bottle separates from the bottle mouth sleeve (12) and falls off.

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