A large infusion bottle blowing molding production device

By using a combination of four-station indexing disc, five-station indexing disc, transfer assembly and drive assembly in the large infusion bottle blowing production device, the automatic assembly and efficient flow of mold components are achieved, and the degree of automation is solved and the problem of poor mold circulation and flow efficiency significantly improves production efficiency and reduces costs.

CN118952624BActive Publication Date: 2024-12-17HUNAN KANGYUAN PHARM CO LTD
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Patent Information

Application Number
CN202411420627.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-12
Publication Date
2024-12-17
Estimated Expiration
2044-10-12

AI Technical Summary

Technical Problem

The existing large infusion bottle blowing production equipment has low degree of automation, poor mold circulation and flow efficiency, and poor equipment coordination, resulting in low production efficiency and high cost.

Method used

An efficient automation device including four-station indexing disc, five-station indexing disc, transfer assembly and drive assembly was designed. Through automatic assembly, positioning and transfer of mold components, the efficient flow of molds between various stations is achieved. and precise coordination to reduce manual intervention and errors.

Benefits of technology

It improves the degree of production automation, optimizes the mold circulation and flow efficiency, unifies equipment control, significantly reduces production costs and maintenance costs, and improves production efficiency and equipment coordination.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The present invention discloses a large infusion bottle blow molding production device, including a four-station indexing plate, a five-station indexing plate, a transfer assembly and a drive assembly installed with a machine cover and internal assembly. The four-station indexing plate is provided with a transfer station A, a material unloading station, a mold closing station and a material loading station, and the five-station indexing plate is provided with a transfer station B, a heating station, a bottle blowing station, a cooling station and a polishing station, and the transfer stations A and B are arranged vertically opposite to each other. In addition, the device also includes a mold assembly, and the four-station indexing plate and the five-station indexing plate can accurately fix the mold assembly. The transfer assembly is vertically opposite to the transfer stations A and B, and the drive assembly maintains a power connection with the four-station indexing plate, the five-station indexing plate and the transfer assembly. The present invention not only improves production efficiency and reduces production costs, but also improves the coordination and cooperation effect between equipment, and has significant economic benefits and practical value.
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Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing equipment, in particular to a bottle blowing molding production device for a large infusion bottle. Background Art

[0002] Existing large infusion bottle blow molding production equipment usually adopts assembly line production. Although this method has improved production efficiency to a certain extent, its degree of automation still has great limitations. In assembly line production, each link often requires manual assistance, such as mold assembly, mold opening and mold closing operations, which not only increases labor costs, but also easily leads to misoperation or inefficiency in the production process.

[0003] In addition, the mold circulation efficiency used in existing devices is low, and the transfer and positioning of molds between various stations often takes a long time, which further increases production costs and affects the production capacity of the entire production line. The various devices in the entire assembly line usually have poor coordination problems, making it difficult to achieve unified control and management. This incoordination leads to bottlenecks or delays in the production process, further reducing the overall efficiency of the production line.

[0004] In general, the existing large infusion bottle blowing molding production equipment has many deficiencies in terms of automation, mold cycle efficiency, and coordinated control of various equipment. These problems make it difficult for enterprises to effectively improve production efficiency while investing large production costs. Therefore, a new type of blowing molding production equipment is urgently needed that can improve the level of automation, reduce production costs, and improve the coordination performance of equipment to meet the needs of modern production. Summary of the invention

[0005] In view of the above-mentioned shortcomings in the prior art, the purpose of the present invention is to provide a large infusion bottle blowing and molding production device with high efficiency, high degree of automation and low cost, which not only improves production efficiency and reduces production costs, but also improves the coordination and cooperation effect between equipment, and has significant economic benefits and practical value.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a large infusion bottle blow molding production device, including a mounting hood and a four-position dividing plate, a five-position dividing plate, a transfer assembly, and a drive assembly assembled in the mounting hood.

[0007] The four-station indexing plate is provided with a transfer station A, a material unloading station, a mold closing station, and a material loading station in a circular arrangement; the five-station indexing plate is provided with a transfer station B, a heating station, a bottle blowing station, a cooling station, and a polishing station in a circular arrangement; the transfer station A and the transfer station B are arranged vertically opposite to each other.

[0008] It also includes a mold assembly. The four-station dividing plate is provided with four groups of assembly slots A distributed in a circular array, and the five-station dividing plate is provided with five groups of assembly slots B distributed in a circular array. The mold assembly is fixedly assembled in the assembly slots A and B.

[0009] The transfer assembly is vertically opposite to the transfer station A and the transfer station B, and the drive assembly maintains power connection with the four-station indexing plate, the five-station indexing plate, and the transfer assembly.

[0010] In order to ensure that the four-station indexing plate, five-station indexing plate, transfer assembly, and drive assembly can be stably assembled in the installation hood, and to ensure that each component operates stably to achieve its designed function, the following technical solutions are provided:

[0011] The mounting cover comprises a machine platform, a protective cover and a top plate. The protective cover is fixedly mounted on the machine platform, and the top plate is fixedly mounted on the top of the protective cover.

[0012] The five-station dividing plate is arranged higher than the four-station dividing plate. The four-station dividing plate is fixedly connected with a mounting shaft A at the axis center, and the five-station dividing plate is fixedly connected with a mounting shaft B at the axis center. The mounting shaft A and the mounting shaft B are both rotationally connected with the machine platform and the protective cover.

[0013] The transfer component is arranged throughout the machine, and the driving component is assembled in the machine.

[0014] In order to ensure that the drive assembly can drive the four-station indexing plate, the five-station indexing plate, and the transfer assembly to operate stably, and realize the coordinated operation of the four-station indexing plate and the five-station indexing plate, the following technical solutions are provided:

[0015] The driving assembly includes an assembly box, a driving motor, a driving shaft, a transmission sleeve, and a transmission seat. The driving motor is power-connected to the driving shaft. The assembly box is fixedly installed in the machine. The driving motor is fixedly installed in the assembly box. The transmission sleeve and the transmission seat are both rotatably installed in the assembly box. The transmission seat is arranged on the top of the transmission sleeve. The driving shaft is rotatably installed in the transmission sleeve. A worm is fixedly connected to the output shaft of the driving motor. A worm wheel is fixedly connected to the bottom of the driving shaft. The worm wheel and the worm are matched and combined. The driving shaft maintains power connection with the transmission sleeve and the transmission seat respectively through two groups of oppositely arranged ratchet assemblies. The transmission sleeve maintains power connection with the four-station dividing plate and the five-station dividing plate, and the transmission seat maintains power connection with the transfer assembly.

[0016] In order to ensure that the two ratchet assemblies can realize the power connection between the drive shaft and the transmission sleeve or the transmission seat, the following technical solutions are provided:

[0017] Both groups of ratchet assemblies include a matching combination of an inner ratchet, a pawl, and a spring leaf. The inner ratchets in the two groups of ratchet assemblies are respectively fixed to the transmission sleeve and the transmission seat. The pawl is rotatably installed on the periphery of the drive shaft. The pawl is meshed with the corresponding inner ratchet, and the spring leaf is assembled between the pawl and the drive shaft.

[0018] In order to ensure that the power of the transmission sleeve can drive the four-position indexing plate and the five-position indexing plate to operate stably and realize the alternating operation of the four-position indexing plate and the five-position indexing plate, the following technical solutions are provided:

[0019] The transmission shaft sleeve is fixedly connected with a coaxially arranged driving disc A and a driving disc B. The outer edges of the driving disc A and the driving disc B are respectively fixedly connected with a driving column A and a driving column B. The driving column A and the driving column B are arranged in the same vertical direction.

[0020] A four-station sheave is fixedly connected to the mounting shaft A. The four-station sheave is matched with the driving disc A in a manner that does not cause motion interference. The driving column A cooperates with the guide groove in the four-station sheave.

[0021] A five-station sheave is fixedly connected to the mounting shaft B. The five-station sheave is matched with the driving disc B in a manner that does not cause motion interference. The driving column B cooperates with the guide groove in the five-station sheave.

[0022] In order to ensure that the transfer assembly can be stably installed and drive the mold assembly to be transferred between transfer station A and transfer station B, the following technical solutions are provided:

[0023] The transfer assembly includes a guide sleeve, a lifting sleeve, a reciprocating screw, and a rotational seat. The guide sleeve is fixedly installed on the top of the assembly box, the guide sleeve is arranged through the top surface of the machine, the lifting sleeve is slidably installed in the guide sleeve, the reciprocating screw is fixedly connected to the axis of the transmission seat and is arranged in the guide sleeve, and the rotational seat is fixed to the bottom of the lifting sleeve and maintains rotational connection with the reciprocating screw.

[0024] In order to ensure that the mold assembly can be stably driven by the transfer assembly, stably assembled and positioned in the assembly groove A of the transfer station A or in the assembly groove B at the transfer station B, the following technical solutions are provided:

[0025] The mold assembly includes an assembly seat, a positioning groove is provided at the bottom of the assembly seat, a positioning seat is fixedly connected to the top of the lifting sleeve and is nested and matched with the positioning groove, a positioning pin hole is provided on the side wall of the assembly seat, and the four-station dividing plate and the five-station dividing plate are respectively provided with installation grooves A and installation grooves B, the installation grooves A are arranged on both sides of the assembly groove A, and the installation grooves B are arranged on both sides of the assembly groove B, and positioning cylinders A and positioning cylinders B are respectively installed in the installation grooves A and B, and the piston rods of the positioning cylinders A and positioning cylinders B are nested and plugged in the positioning pin holes.

[0026] In order to ensure that the mold assembly can produce qualified bottles and facilitate the operation and control of mold opening and closing, the following technical solutions are provided:

[0027] The mold assembly also includes a threaded rod, a bottom mold and two groups of symmetrically arranged side molds. The bottom mold is fixedly installed on the assembly seat. The assembly seat is provided with guide grooves arranged on both sides of the bottom mold. The side molds are arranged on the top of the bottom mold. Slide seats are fixedly connected to the side molds. The two groups of slide seats are respectively slidably installed in the two groups of guide grooves. The threaded rod is rotatably installed in the two groups of guide grooves. The threaded rod is provided with two sections of thread grooves with opposite spiral directions, and the two sections of thread grooves are respectively screwed to the two groups of slide seats.

[0028] In order to realize the opening operation of the mold assembly at the unloading station of the four-station indexing plate to facilitate the removal of the formed bottle body, and to realize the closing operation of the mold assembly at the closing station to fill and load the injection plastic, the following technical solutions are provided:

[0029] The unloading station and the mold closing station are also equipped with control components, which include an assembly frame, a telescopic cylinder, a sliding frame, and an adjusting motor. The sliding frame is slidably installed in the assembly frame, the telescopic cylinder is arranged in the assembly frame, and the two ends of the telescopic cylinder are respectively fixedly connected to the sliding frame and the assembly frame, the adjusting motor is fixedly installed on the sliding frame, and a locking joint is fixedly connected to the output shaft of the adjusting motor, and a locking groove is fixedly connected to the end of the threaded rod, and the locking groove and the locking joint are nested and matched.

[0030] Beneficial effects of the present invention:

[0031] 1. Improve the degree of automation: This device realizes the automatic assembly, positioning and transportation of mold components at various stations by setting up components such as assembly seats, lifting sleeves and positioning cylinders, reducing the need for manual intervention and improving the automation level of the production process. This not only reduces labor costs, but also reduces errors and instability caused by manual operation.

[0032] 2. Optimize the mold circulation efficiency: By setting installation slots A and B on the four-station indexing plate and the five-station indexing plate respectively, and configuring positioning cylinders A and B, the mold components can be accurately positioned. With the coordinated operation of the four-station indexing plate, the five-station indexing plate and the transfer assembly, the mold components can be efficiently and stably circulated between the various stations.

[0033] 3. Unified control and coordination: The drive assembly used in this device can accurately control the operating posture and coordinated operation process of the four-station indexing plate, five-station indexing plate and transfer assembly, improve the coordination of the coordinated operation of each component and the unity of control, and ensure the close connection and efficient operation of each process.

[0034] 4. Reduce production costs: By improving the level of automation and mold circulation efficiency, the dependence on manual labor and waiting time in the production process are reduced, thus significantly reducing production costs. In addition, the stable circulation and positioning of mold components between various stations reduces mold loss and replacement frequency, further reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the matching combination of various components of the present invention;

[0036] Figure 2 It is a structural diagram of a four-station indexing plate, a five-station indexing plate and a matching combination of equipment installed thereon;

[0037] Figure 3 It is a schematic diagram of the structure of a four-station indexing plate and the equipment installed thereon;

[0038] Figure 4 It is a structural schematic diagram of a five-station indexing plate and the equipment installed thereon;

[0039] Figure 5 It is a schematic diagram of the structure of a four-station indexing plate and a five-station indexing plate;

[0040] Figure 6 is a schematic diagram of the structure of the drive component;

[0041] Figure 7 It is a structural diagram of the drive component from another perspective;

[0042] Figure 8 It is a detailed schematic diagram of the matching combination of the drive shaft, the transmission sleeve and the transmission seat;

[0043] Fig. 9 It is a detailed schematic diagram of the ratchet assembly, the drive shaft, the drive sleeve, and the drive seat;

[0044] Fig.10 It is a schematic diagram of the structure of the transfer component;

[0045] Fig.11 It is a structural diagram of the matching combination of the mold component and the control component;

[0046] Fig.12 It is a schematic diagram of the structure of the mold component in a cut-away state;

[0047] Fig.13 A schematic diagram of the control component.

[0048] In the figure: 1 installation cover, 11 machine, 12 protective cover, 121 inlet and outlet, 13 top plate, 2 four-station indexing plate, 201 transfer station A, 202 unloading station, 203 mold clamping station, 204 loading station, 21 assembly slot A, 22 installation shaft A, 23 four-station groove wheel, 24 installation slot A, 25 positioning cylinder A, 26 cover A, 3 five-station indexing plate, 301 transfer station B, 302 heating station, 303 bottle blowing station, 304 cooling station, 305 grinding station, 31 assembly slot B, 32 installation shaft B, 33 five-station groove wheel, 34 installation slot B, 35 positioning cylinder B, 36 cover B, 4 transfer assembly, 41 guide sleeve, 42 lifting sleeve, 421 positioning seat, 43 reciprocating screw, 44 rotating seat, 5 driving assembly, 51 assembly box, 52 driving motor, 521 worm, 53 driving shaft, 531 worm wheel, 54 driving sleeve, 541 driving disk A, 542 driving disk B, 543 driving column A, 544 driving column B, 55 driving seat, 56 ratchet assembly, 561 inner ratchet, 562 pawl, 563 reed, 6 mold assembly, 61 assembly seat, 611 positioning groove, 612 positioning pin hole, 613 guide groove, 62 threaded rod, 621 locking groove, 63 bottom mold, 64 side mold, 641 slide seat, 7 control assembly, 71 assembly frame, 72 telescopic cylinder, 73 sliding frame, 74 adjusting motor, 741 locking joint, 81 spraying equipment, 82 heating equipment, 83 bottle blowing equipment, 84 cooling equipment, 85 polishing equipment, 9 bottle body. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0050] See also Figure 1-Figure 4 A large infusion bottle blow molding production device includes a mounting cover 1 and a four-station indexing plate 2, a five-station indexing plate 3, a transfer component 4, and a drive component 5 assembled in the mounting cover 1.

[0051] The four-station indexing plate 2 is provided with a transfer station A201, a material unloading station 202, a mold closing station 203, and a material loading station 204 in a circular arrangement; the five-station indexing plate 3 is provided with a transfer station B301, a heating station 302, a bottle blowing station 303, a cooling station 304, and a polishing station 305 in a circular arrangement; the transfer station A201 and the transfer station B301 are arranged vertically opposite to each other.

[0052] It also includes a mold assembly 6. The four-station indexing plate 2 is provided with four groups of assembly grooves A21 distributed in a circular array. The five-station indexing plate 3 is provided with five groups of assembly grooves B31 distributed in a circular array. The mold assembly 6 is fixedly assembled in the assembly grooves A21 and B31.

[0053] The transfer assembly 4 is vertically opposite to the transfer station A201 and the transfer station B301 , and the driving assembly 5 maintains power connection with the four-station indexing plate 2 , the five-station indexing plate 3 , and the transfer assembly 4 .

[0054] The setting of installing the machine cover 1 can ensure the stable installation of the four-station dividing plate 2, the five-station dividing plate 3, the transfer component 4, the drive component 5 and other related processing equipment. Under the driving action of the drive component 5, it can ensure the coordinated operation of the four-station dividing plate 2, the five-station dividing plate 3, and the transfer component 4 to realize a series of processing procedures from pre-formed injection molding material to post-forming.

[0055] For the four-station indexing plate 2, its operation process is as follows: the mold assembly 6 at the transfer station B301 and the bottle body 9 formed therein are transferred to the transfer station A201 by the transfer assembly 4, and then the four-station indexing plate 2 is controlled to rotate 90 degrees, so that the mold assembly 6 with the formed bottle body 9 is transferred to the unloading station 202, and the mold assembly 6 is opened by the unloading station 202, and the formed bottle body 9 is unloaded, and at the same time, the mold assembly 6 with the preformed injection molding material at the loading station 204 is transferred to the transfer station A201, and then the transfer assembly 4 is used to transfer it to the transfer station B301;

[0056] When the four-station indexing plate 2 rotates 90° again, the mold assembly 6 controlled at the unloading station 202 is transferred to the mold closing station 203, and the mold closing station 203 sprays the release agent on the inner wall of the mold and recloses the opened mold assembly 6; after the four-station indexing plate 2 continues to rotate 90°, the mold assembly 6 sprayed with the release agent and closed is transferred to the loading station 204, and the preformed injection molding material is loaded into the mold assembly 6 at the loading station 204, forming a cycle operation of the four-station indexing plate 2.

[0057] For the five-station indexing plate 3, its operation process is as follows: the mold assembly 6 equipped with the preformed injection molded parts at the transfer station A201 is transferred to the transfer station B301 through the transfer component 4; then the five-station indexing plate 3 is controlled to rotate 72°, so that the mold assembly 6 equipped with the preformed injection molded parts is transferred to the heating station 302, and the mold assembly 6 and the preformed injection molded parts therein are heated by the heating station 302; then the five-station indexing plate 3 is controlled to continue to rotate 72°, so that the mold assembly 6 and the heated injection molded parts loaded therein are transferred to the bottle blowing station 303, and the injection molded parts are blown at the bottle blowing station 303 to form the bottle body 9 of the large infusion bottle; then the five-station indexing plate 3 is continued to be controlled to rotate 72°. The dial 3 is rotated 72° again to rotate the mold assembly 6 and the bottle body 9 loaded therein to the cooling station 304, and the cooling station 304 cools and shapes the mold assembly 6 and the bottle body 9 therein; then the five-station indexing plate 3 is controlled to continue to rotate 72°, so that the mold assembly 6 and the cooled and shaped bottle body 9 therein are rotated to the polishing station 305, and the bottle mouth position of the shaped bottle body 9 is polished to finally form a qualified large infusion bottle; finally, the five-station indexing plate 3 is controlled to rotate 72° and return to the transfer station B301, and the bottle body 9 and the mold assembly 6 formed in the transfer station B301 are transferred to the transfer station A201 controlled by the four-station indexing plate 2 with the help of the transfer assembly 4.

[0058] The driving assembly 5 can control the four-station indexing plate 2 and the five-station indexing plate 3 to operate alternately. After the driving assembly 5 drives the four-station indexing plate 2 to rotate 90°, the driving assembly 5 continues to operate, the four-station indexing plate 2 is in a stationary state and the five-station indexing plate 3 rotates 72°. Then the driving assembly 5 continues to operate, the five-station indexing plate 3 is in a stationary state and the four-station indexing plate 2 continues to rotate 90°, thus reciprocating and cooperating with the transfer assembly 4 to ensure that the mold assembly 6 is stably transferred at the transfer station A201 of the four-station indexing plate 2 and the transfer station B301 of the five-station indexing plate 3.

[0059] Specifically, when the transfer component 4 transfers the bottle body 9 and its mold assembly 6 at the transfer station B301 to the controlled transfer station A201, the transfer station B301 is in an empty state (without the mold assembly 6), and then the four-station indexing plate 2 is controlled to rotate 90 degrees while the five-station indexing plate 3 is in a stationary state. At this time, there is a mold assembly 6 with injection molding material at the transfer station A201, and the transfer component 4 is controlled to transfer the mold assembly 6 at the transfer station A201 and the injection molding material therein to the controlled transfer station A201. The transfer station B301 is at this time empty to receive the molded bottle body 9 delivered from the transfer station B301, and then the five-station indexing plate 3 is controlled to rotate 72° while the four-station indexing plate 2 is in a stationary state. At this time, the mold assembly 6 with injection molding material at the transfer station B301 is transferred to the heating station 302, and the bottle body 9 and its mold assembly 6 polished by the polishing station 305 are transferred to the transfer station B301 for the next cycle of transfer operation. Embodiment 2

[0060] See also Figure 1 In order to ensure that the four-station dividing plate 2, the five-station dividing plate 3, the transfer assembly 4, and the drive assembly 5 can be stably assembled in the installation hood 1, and to ensure that each component operates stably to achieve its designed function, the following technical solution is provided.

[0061] The mounting cover 1 comprises a machine platform 11 , a protective cover 12 , and a top plate 13 . The protective cover 12 is fixedly mounted on the machine platform 11 , and the top plate 13 is fixedly mounted on the top of the protective cover 12 .

[0062] The five-station indexing plate 3 is arranged higher than the four-station indexing plate 2. The four-station indexing plate 2 has a mounting shaft A22 fixedly connected to its axis, and the five-station indexing plate 3 has a mounting shaft B32 fixedly connected to its axis. Both the mounting shaft A22 and the mounting shaft B32 are rotationally connected to the machine table 11 and the protective cover 12.

[0063] The transfer assembly 4 is arranged throughout the machine platform 11 , and the driving assembly 5 is assembled in the machine platform 11 .

[0064] The arrangement of the machine platform 11 and the top plate 13 can ensure that the four-station indexing plate 2, the five-station indexing plate 3, the transfer assembly 4, the drive assembly 5 and other functional equipment are stably installed and operated in the installation cover 1. The protective cover 12 can separate the processing environment from the external environment to avoid mutual interference between the external environment and the processing and production environment of the large infusion bottle.

[0065] The setting of the installation axis A22 and the installation axis B32 can ensure that the four-station dividing plate 2 and the five-station dividing plate 3 can rotate stably in the installation hood 1. The five-station dividing plate 3 is set higher than the four-station dividing plate 2 to form a height difference for transfer, and can cooperate with the transfer assembly 4 to operate stably for the mold assembly 6 and the prefabricated injection molding material or molded bottle body 9 loaded therein between the four-station sealing plate and the five-station dividing plate 3.

[0066] At the loading station 204 and the unloading station 202, the unloading operations of the molded bottle body 9 and the loading of the prefabricated injection molding material are both realized by mechanical arms. In order to facilitate the loading and unloading operations in the installation machine cover 1, an inlet and outlet port 121 arranged opposite to the loading station 204 and the unloading station 202 is opened on the protective cover 12. Embodiment 3

[0067] See also Figure 1 , Figure 6-Figure 8 In order to ensure that the driving assembly 5 can drive the four-station indexing plate 2, the five-station indexing plate 3, and the transfer assembly 4 to operate stably, and realize the coordinated operation of the four-station indexing plate 2 and the five-station indexing plate 3, the following technical solution is provided.

[0068] The driving assembly 5 includes an assembly box 51, a driving motor 52, a driving shaft 53, a transmission sleeve 54, and a transmission seat 55. The driving motor 52 is power-connected to the driving shaft 53. The assembly box 51 is fixedly installed in the machine table 11. The driving motor 52 is fixedly installed in the assembly box 51. The transmission shaft and the transmission seat 55 are both rotatably installed in the assembly box 51. The transmission seat 55 is arranged on the top of the transmission sleeve 54. The driving shaft 53 is rotatably installed in the transmission sleeve 54. A worm 521 is fixedly connected to the output shaft of the driving motor 52. A worm wheel 531 is fixedly connected to the bottom of the driving shaft 53. The worm wheel 531 is matched with the worm 521. The driving shaft 53 maintains power connection with the transmission sleeve 54 and the transmission seat 55 respectively through two sets of oppositely arranged ratchet assemblies 56. The transmission sleeve 54 maintains power connection with the four-station dividing plate 2 and the five-station dividing plate 3. The transmission seat 55 maintains power connection with the transfer assembly 4.

[0069] The setting of the assembly box 51 can ensure that the drive motor 52, the drive shaft 53, the transmission sleeve 54, and the transmission seat 55 are stably installed therein, and that the worm 521, the worm wheel 531 and the drive shaft 53 are all rotatably installed therein, and the mounting shaft A22 on the four-station dividing plate 2 and the mounting shaft B32 on the five-station dividing plate 3 are also rotatably installed in the assembly box 51, thereby ensuring the stable installation and operation of the relevant components.

[0070] The driving motor 52 transmits power to the driving shaft 53 through the combination of the worm 521 and the worm wheel 531. The combination of the worm 521 and the worm wheel 531 has the effect of reducing speed and increasing torque, driving the driving shaft 53 to operate stably with a larger torque, and then the driving shaft 53 drives the four-station dividing plate 2, the five-station dividing plate 3, and the transfer assembly 4 to operate stably.

[0071] At the same time, the combination of the worm 521 and the worm wheel 531 also has a self-locking effect, that is, the power at the worm 521 end can be stably transmitted to the worm wheel 531 and drive the worm wheel 531 to operate, while the power at the worm wheel 531 end cannot be transmitted back to the worm 521, further ensuring the stability of the operation of the four-station dividing plate 2, the five-station dividing plate 3 and the transfer assembly 4.

[0072] The driving shaft 53 is poweredly connected through two sets of oppositely arranged ratchet assemblies 56, a transmission sleeve 54 and a transmission seat 55. When the driving motor 52 is controlled to drive the driving shaft 53 to rotate in the forward direction, the corresponding ratchet assembly 56 can independently drive the transmission sleeve 54 to operate stably, thereby driving the four-station dividing plate 2 and the five-station dividing plate 3 to operate, while the other set of ratchet assemblies 56 cannot transmit power. At this time, the transmission seat 55 and the transfer assembly 4 are in a stopped state.

[0073] When the driving motor 52 is controlled to drive the driving shaft 53 to rotate in the opposite direction, the corresponding ratchet assembly 56 can independently drive the transmission seat 55 to rotate stably, thereby driving the transfer assembly 4 to operate stably, while the other set of ratchet assemblies 56 cannot transmit power. At this time, the transmission sleeve and the four-station dividing plate 2 and the five-station dividing plate 3 are in a stopped state.

[0074] Through two sets of reversely arranged ratchet assemblies 56, the power of the drive motor 52 and the drive shaft 53 can be diverted to drive the four-station indexing plate 2, the five-station indexing plate 3 or the transfer assembly 4 to operate independently, thereby achieving the coordinated operation of the three and realizing the stable transfer of the mold assembly 6 and the injection molding material or bottle body 9 loaded therein at each indexing plate and each station.

[0075] See also Figure 8 , Fig. 9 In order to ensure that the two groups of ratchet assemblies 56 can realize the power connection between the drive shaft 53 and the transmission sleeve 54 or the transmission seat 55, the following technical solution is provided.

[0076] Both groups of ratchet assemblies 56 include a matching combination of an inner ratchet 561, a pawl 562, and a spring 563. The inner ratchet 561 in the two groups of ratchet assemblies 56 are respectively fixed to the transmission sleeve 54 and the transmission seat 55. The pawl 562 is rotatably installed on the periphery of the drive shaft 53. The pawl 562 is meshed with the corresponding inner ratchet 561, and the spring 563 is assembled between the pawl 562 and the drive shaft 53.

[0077] The inner ratchets 561 of the two groups of ratchet assemblies 56 are arranged in opposite directions, and each group of inner ratchets 561 is matched with multiple groups of pawls 562 to ensure that the pawls 562 can stably transmit power to the corresponding inner ratchets 561, and the reeds 563 can drive the pawls 562 to always be in an outwardly opened state.

[0078] When the drive shaft 53 rotates forward, the inner ratchet 561 assembled on the transmission sleeve 54 is in a meshing state with the corresponding pawl 562. At this time, the power of the drive shaft 53 can be transmitted to the transmission sleeve through the pawl 562, while the inner ratchet 561 and the corresponding pawl 562 in the transmission seat 55 are in a slipping state, and the power of the pawl 562 cannot be transmitted to the inner ratchet 561 in the transmission seat 55. At this time, the transmission seat 55 is in a stationary state.

[0079] When the driving shaft 53 rotates in the opposite direction, the inner ratchet 561 and the corresponding pawl 562 assembled on the transmission sleeve 54 are in a slipping state, and the power of the driving shaft 53 cannot be transmitted to the transmission sleeve through the pawl 562. At this time, the transmission sleeve is in a stationary state, and the inner ratchet 561 and the corresponding pawl 562 in the transmission seat 55 are in a meshing state. The power of the driving shaft 53 can be transmitted to the inner ratchet 561 through the pawl 562, thereby driving the transmission seat 55 to operate stably. Embodiment 4

[0080] See also Figure 6-Figure 8 In order to ensure that the power of the transmission shaft sleeve 54 can drive the four-station indexing plate 2 and the five-station indexing plate 3 to operate stably and realize the alternating operation of the four-station indexing plate 2 and the five-station indexing plate 3, the following technical solution is provided.

[0081] The transmission shaft sleeve 54 is fixedly connected with a driving disk A541 and a driving disk B542 which are coaxially arranged. The outer edges of the driving disk A541 and the driving disk B542 are fixedly connected with a driving column A543 and a driving column B544 respectively. The driving column A543 and the driving column B544 are arranged in the same vertical direction.

[0082] A four-station sheave 23 is fixedly connected to the mounting shaft A22 . The four-station sheave 23 is matched with the driving disk A541 in a manner that does not cause motion interference. The driving column A543 cooperates with the guide groove in the four-station sheave 23 .

[0083] A five-station sheave 33 is fixedly connected to the mounting shaft B32 . The five-station sheave 33 is matched with the driving disk B542 in a manner that does not cause motion interference. The driving column B544 cooperates with the guide groove in the five-station sheave 33 .

[0084] Due to the layout relationship between the four-station dividing plate 2 and the five-station dividing plate 3, the two are inevitably distributed on both sides of the transmission sleeve 54. When the transmission sleeve 54 drives the driving disk A541 and the driving disk B542 thereon to operate, since the driving column A543 and the driving column B544 are arranged in the same vertical direction, when the driving column A543 cooperates with the four-station groove wheel 23, the driving column B544 and the five-station groove wheel 33 are in a separated state. At this time, the driving column A543 can drive the four-station groove wheel 23 and the four-station dividing plate 2 to rotate 1 / 4 of a circle angle (i.e. 90°), while the five-station groove wheel 33 and the five-station dividing plate 3 are in a stationary state.

[0085] After the driving column A543 continues to rotate and disengages from the four-station groove wheel 23, the driving column B544 gradually begins to cooperate with the five-station groove wheel 33, and the driving column B544 drives the five-station groove wheel 33 and the five-station dividing plate 3 to rotate 1 / 5 of the circumferential angle (i.e. 72°), while the four-station groove wheel 23 and the four-station dividing plate 2 are in a stationary state, thereby realizing a cycle of alternating operation of the four-station dividing plate 2 and the five-station dividing plate 3.

[0086] See also Fig.10 In order to ensure that the transfer assembly 4 can be stably installed and drive the mold assembly 6 to be transferred between the transfer station A201 and the transfer station B301, the following technical solutions are provided:

[0087] The transfer assembly 4 includes a guide sleeve 41, a lifting sleeve 42, a reciprocating screw 43, and a rotary seat 44. The guide sleeve 41 is fixedly installed on the top of the assembly box 51, and the guide sleeve 41 is arranged through the top surface of the machine table 11. The lifting sleeve 42 is slidably installed in the guide sleeve 41. The reciprocating screw 43 is fixedly connected to the axis of the transmission seat 55 and arranged in the guide sleeve 41. The rotary seat 44 is fixedly connected to the bottom of the lifting sleeve 42 and is kept in rotary connection with the reciprocating screw 43.

[0088] The setting of the guide sleeve 41 can ensure that the lifting sleeve 42 can be lifted and lowered stably in the vertical direction. When the driving shaft 53 drives the transmission seat 55 to continuously rotate in one direction, it can drive the reciprocating screw 43 to rotate synchronously, and then the reciprocating screw 43 drives the rotating seat 44 and the lifting sleeve 42 to perform periodic lifting and lowering movements in the vertical direction.

[0089] When the lifting sleeve 42 runs from the top end of the stroke to the bottom end of the stroke, it can drive the mold assembly 6 from the transfer station B301 to the transfer station A201. When the lifting sleeve 42 runs from the bottom end of the stroke to the top end of the stroke, it can drive the mold assembly 6 from the rotation station A to the transfer station B301.

[0090] By controlling the periodic forward and reverse operation of the driving motor 52, the coordinated operation of the four-station indexing plate 2, the five-station indexing plate 3 and the transfer assembly 4 can be realized. When the driving motor 52 rotates forward to drive the five-station indexing plate 3 to rotate 72° alone, the processed bottle body 9 and the mold assembly 6 can be moved to the transfer station B301; then the driving motor 52 is controlled to reverse to make the transfer assembly 4 move from the top end of the stroke to the bottom end of the stroke, so that the bottle body 9 and the mold assembly 6 processed at the transfer station B301 can be moved to the transfer station B301. Transfer to the transfer station A201; then control the drive motor 52 to rotate forward again to drive the four-station dividing plate 2 to rotate 90° independently, so that the processed bottle body 9 is transferred to the feeding station 202, and the mold assembly 6 containing the injection molding material at the loading station 204 is transferred to the transfer station A201; then control the drive motor 52 to reverse again to make the bottle run from the bottom end of the stroke to the top end of the stroke, and transfer the mold assembly containing the injection molding material to the transfer station B301, thereby realizing a cycle of coordinated operations. Embodiment 5

[0091] See also Figure 2 , Figure 5 , Fig.10 In order to ensure that the mold assembly 6 can be stably driven by the transfer assembly 4 and stably assembled and positioned in the assembly groove A21 of the transfer station A201 or in the assembly groove B31 at the transfer station B301, the following technical solution is provided.

[0092] The mold assembly 6 includes an assembly seat 61, a positioning groove 611 is provided at the bottom of the assembly seat 61, a positioning seat 421 is fixedly connected to the top of the lifting sleeve 42 and is nested and matched with the positioning groove 611, a positioning pin hole 612 is provided on the side wall of the assembly seat 61, and a mounting groove A24 and a mounting groove B34 are respectively provided on the four-station dividing plate 2 and the five-station dividing plate 3. The mounting groove A24 is arranged on both sides of the assembly groove A21, and the mounting groove B34 is arranged on both sides of the assembly groove B31. The mounting groove A24 and the mounting groove B34 are respectively equipped with positioning cylinders A25 and positioning cylinders B35, and the piston rods of the positioning cylinders A25 and positioning cylinders B35 are nested and plugged in the positioning pin holes 612.

[0093] The positioning groove 611 at the bottom of the assembly seat 61 can cooperate with the positioning seat 421 provided on the transfer component 4, and the lifting sleeve 42 of the transfer component 4 drives the assembly seat 61 to perform lifting movement.

[0094] The setting of the mounting groove A24 and the mounting groove B34 can ensure that the positioning cylinder A25 and the positioning cylinder B35 can be stably installed therein. During the extension process of the positioning cylinder A25 and the positioning cylinder B35, the piston rod can extend to the assembly groove A21 and the assembly groove B31 respectively, and position the assembly seat 61 therein to ensure that the mold assembly 6 can be stably installed on the four-station dividing plate 2 and the five-station dividing plate 3.

[0095] Cover plates A26 and B36 are fixed to the tops of the mounting grooves A24 and B34 respectively to seal the positioning cylinders A25 and B35 installed therein to ensure their continuous and stable operation.

[0096] See also Fig.11 , 12 In order to ensure that the mold assembly 6 can produce a qualified bottle body 9 and facilitate the operation control of mold opening and mold closing, the following technical solution is provided.

[0097] The mold assembly 6 also includes a threaded rod 62, a bottom mold 63 and two groups of symmetrically arranged side molds 64. The bottom mold 63 is fixedly installed on the assembly seat 61. The assembly seat 61 is provided with guide grooves 613 arranged on both sides of the bottom mold 63. The side molds 64 are arranged on the top of the bottom mold 63. The side molds 64 are fixedly connected with slides 641. The two groups of slides 641 are respectively slidably installed in the two groups of guide grooves 613. The threaded rod 62 is rotatably installed in the two groups of guide grooves 613. The threaded rod 62 is provided with two sections of thread grooves with opposite spiral directions. The two sections of thread grooves are respectively screwed to the two groups of slides 641.

[0098] After the bottom mold 63 and the side mold 64 are spliced ​​and combined, a complete mold cavity can be formed to ensure that the prefabricated injection molding material can be formed into a qualified infusion bottle through the bottle blowing operation in the mold cavity.

[0099] Since the threaded grooves at both ends of the threaded rod 62 are arranged in opposite directions, when the threaded rod 62 is controlled to rotate, the two sets of slides 641 and the side molds 64 can be driven to run in opposite directions, so that the two sets of side molds 64 move away from or closer to each other, thereby realizing the opening and closing operations of the mold assembly 6.

[0100] See also Fig.11 , Fig.13 In order to realize the opening operation of the mold assembly 6 at the unloading station 202 of the four-station indexing plate 2 to facilitate the removal of the formed bottle body 9, and to realize the mold closing operation of the mold assembly 6 at the mold closing station 203 and the filling and loading of the injection molding material, the following technical solution is provided.

[0101] The unloading station 202 and the mold closing station 203 are also equipped with a control component 7, which includes an assembly frame 71, a telescopic cylinder 72, a sliding frame 73, and an adjusting motor 74. The sliding frame 73 is slidably installed in the assembly frame 71, the telescopic cylinder 72 is arranged in the assembly frame 71, and the two ends of the telescopic cylinder 72 are respectively fixedly connected to the sliding frame 73 and the assembly frame 71, the adjusting motor 74 is fixedly installed on the sliding frame 73, and a locking joint 741 is fixedly connected to the output shaft of the adjusting motor 74, and a locking groove 621 is fixedly connected to the end of the threaded rod 62, and the locking groove 621 and the locking joint 741 maintain a nested fit.

[0102] The assembly frame 71 can be fixed on the protective cover 12 or the top plate 13 of the mounting hood 1 by connecting the bracket and other components. The telescopic cylinder 72 can drive the sliding frame 73 and the adjusting motor 74 to move radially along the four-station dividing plate 2, thereby realizing the nesting, insertion and separation of the locking joint 741 and the locking groove 621. When the locking joint 741 and the locking groove 621 are in nested locking, the power of the adjusting motor 74 can be stably transmitted to the threaded rod 62, thereby driving the threaded rod 62 to operate to realize the opening and closing operations of the mold assembly 6. Embodiment 6

[0103] See also Figure 2-Figure 4 A spraying device 81 is also installed at the mold closing station 203. The spraying device 81 is fixed on the top plate 13 and arranged vertically downward. The nozzle is controlled by a cylinder and other lifting components to extend downward into the mold cavity of the mold assembly 6. The release agent is evenly sprayed onto the inner wall of the mold cavity through a pressure pump, which facilitates the demolding and unloading of the bottle body 9 formed by blow molding.

[0104] A heating device 82 is also installed at the heating station 302. The heating device 82 is installed on the top plate 13. The cover body is controlled to descend and cover the outside of the mold assembly 6 through telescopic components such as cylinders, and the internal bottom mold 63, side mold 64 and the injection plastic therein are heated by infrared heating.

[0105] A bottle blowing device 83 is installed at the bottle blowing station 303, which is also installed on the top plate 13. The blowing nozzle is driven down by the cylinder and sealed with the injection plastic exposed at the top of the side mold 64. High-pressure and high-temperature air is blown into the injection plastic with the help of an air pump to expand it, and a completed infusion bottle structure is formed under the restriction of the mold cavity.

[0106] A cooling device 84 is installed at the cooling station 304 and is mounted on the top plate 13. The cover is driven down by the cylinder to wrap the mold assembly 6 and the bottle body 9 formed therein. Cold air is blown into the cover from the top through an air pump. After cooling and temperature reduction treatment, the hot air generated can be discharged from the exhaust holes opened on the bottom side wall of the cover.

[0107] A grinding device 85 is installed at the grinding station 305, which is installed on the top plate 13 and drives the dust hood to descend through the cylinder so that the grinding wheel installed in the dust hood can dock with the bottle mouth of the bottle body 9. The motor drives the grinding wheel to rotate at a high speed to grind the bottle mouth smoothly, and the generated debris is sucked away by an exhaust pump connected to the dust hood.

[0108] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0109] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A large infusion bottle blowing molding production device, characterized in that: It comprises a mounting cover (1) and a four-station indexing plate (2), a five-station indexing plate (3), a transfer assembly (4), and a drive assembly (5) assembled in the mounting cover (1); The four-station indexing plate (2) is provided with a transfer station A (201), a material unloading station (202), a mold closing station (203), and a material loading station (204) arranged in a circular manner; the five-station indexing plate (3) is provided with a transfer station B (301), a heating station (302), a bottle blowing station (303), a cooling station (304), and a polishing station (305) arranged in a circular manner; the transfer station A (201) and the transfer station B (301) are arranged vertically opposite to each other; It also includes a mold assembly (6), the four-station indexing plate (2) is provided with four groups of assembly grooves A (21) distributed in a circular array, the five-station indexing plate (3) is provided with five groups of assembly grooves B (31) distributed in a circular array, and the mold assembly (6) is fixedly mounted in the assembly grooves A (21) and the assembly grooves B (31); The transfer assembly (4) is vertically opposite to the transfer station A (201) and the transfer station B (301), and the drive assembly (5) is in power connection with the four-station indexing plate (2), the five-station indexing plate (3), and the transfer assembly (4); The mounting cover (1) comprises a machine platform (11), a protective cover (12), and a top plate (13); the protective cover (12) is fixedly mounted on the machine platform (11), and the top plate (13) is fixedly mounted on the top of the protective cover (12); The five-station indexing disk (3) is arranged higher than the four-station indexing disk (2); a mounting shaft A (22) is fixedly connected to the axis of the four-station indexing disk (2); a mounting shaft B (32) is fixedly connected to the axis of the five-station indexing disk (3); the mounting shaft A (22) and the mounting shaft B (32) are both rotatably connected to the machine platform (11) and the protective cover (12); The transfer assembly (4) is arranged throughout the machine (11), and the drive assembly (5) is assembled in the machine (11); The driving assembly (5) comprises an assembly box (51), a driving motor (52), a driving shaft (53), a transmission sleeve (54), and a transmission seat (55); the driving motor (52) is connected to the driving shaft (53) by power; the assembly box (51) is fixedly installed in the machine platform (11); the driving motor (52) is fixedly installed in the assembly box (51); the transmission sleeve (54) and the transmission seat (55) are both rotatably installed in the assembly box (51); the transmission seat (55) is arranged on the top of the transmission sleeve (54); the driving shaft (53) is rotatably installed in the machine platform (11); In the transmission sleeve (54), a worm (521) is fixedly connected to the output shaft of the drive motor (52), a worm wheel (531) is fixedly connected to the bottom of the drive shaft (53), the worm wheel (531) and the worm (521) are matched and assembled, the drive shaft (53) is respectively connected to the transmission sleeve (54) and the transmission seat (55) by two groups of oppositely arranged ratchet assemblies (56), the transmission sleeve (54) is connected to the four-station indexing plate (2) and the five-station indexing plate (3), and the transmission seat (55) is connected to the transfer assembly (4); The two groups of ratchet assemblies (56) each comprise a matching combination of an inner ratchet (561), a pawl (562), and a leaf spring (563); the inner ratchet (561) in the two groups of ratchet assemblies (56) are respectively fixed to the transmission shaft sleeve (54) and the transmission seat (55); the pawl (562) is rotatably mounted on the periphery of the drive shaft (53); the pawl (562) is meshed with the corresponding inner ratchet (561); and the leaf spring (563) is assembled between the pawl (562) and the drive shaft (53); The transmission shaft sleeve (54) is fixedly connected to a drive disk A (541) and a drive disk B (542) which are coaxially arranged. The outer edges of the drive disk A (541) and the drive disk B (542) are respectively fixedly connected to a drive column A (543) and a drive column B (544). The drive column A (543) and the drive column B (544) are arranged in the same vertical direction. A four-station groove wheel (23) is fixedly connected to the mounting shaft A (22), the four-station groove wheel (23) and the driving disk A (541) are matched and assembled in a manner that does not cause motion interference, and the driving column A (543) cooperates with the guide groove in the four-station groove wheel (23); A five-station groove wheel (33) is fixedly connected to the mounting shaft B (32), the five-station groove wheel (33) and the driving disk B (542) are matched and assembled in a manner that does not cause motion interference, and the driving column B (544) cooperates with the guide groove in the five-station groove wheel (33).

2. A large infusion bottle blowing and molding production device according to claim 1, characterized in that: The transfer assembly (4) comprises a guide sleeve (41), a lifting sleeve (42), a reciprocating screw (43), and a rotational seat (44); the guide sleeve (41) is fixedly mounted on the top of the assembly box (51); the guide sleeve (41) passes through the top surface of the machine platform (11); the lifting sleeve (42) is slidably mounted in the guide sleeve (41); the reciprocating screw (43) is fixedly connected to the axis of the transmission seat (55) and arranged in the guide sleeve (41); the rotational seat (44) is fixedly connected to the bottom of the lifting sleeve (42) and is rotationally connected to the reciprocating screw (43).

3. A large infusion bottle blowing and molding production device according to claim 2, characterized in that: The mold assembly (6) comprises an assembly seat (61), a positioning groove (611) is provided at the bottom of the assembly seat (61), a positioning seat (421) which is nested and matched with the positioning groove (611) is fixedly connected to the top of the lifting sleeve (42), a positioning pin hole (612) is provided on the side wall of the assembly seat (61), and a mounting groove A (24) and a mounting groove B (34) are respectively provided on the four-station indexing plate (2) and the five-station indexing plate (3), the mounting groove A (24) is arranged on both sides of the assembly groove A (21), and the mounting groove B (34) is arranged on both sides of the assembly groove B (31), and the mounting groove A (24) and the mounting groove B (34) are respectively equipped with positioning cylinders A (25) and positioning cylinders B (35), and the piston rods of the positioning cylinders A (25) and positioning cylinders B (35) are nested and plugged with the positioning pin holes (612).

4. A large infusion bottle blowing and molding production device according to claim 3, characterized in that: The mold assembly (6) further comprises a threaded rod (62), a bottom mold (63), and two groups of symmetrically arranged side molds (64); the bottom mold (63) is fixedly mounted on the assembly seat (61); the assembly seat (61) is provided with guide grooves (613) arranged on both sides of the bottom mold (63); the side molds (64) are arranged on the top of the bottom mold (63); the side molds (64) are fixedly connected with slide seats (641); the two groups of slide seats (641) are respectively slidably mounted in the two groups of guide grooves (613); the threaded rod (62) is rotatably mounted in the two groups of guide grooves (613); the threaded rod (62) is provided with two sections of thread grooves with opposite spiral directions; the two sections of thread grooves are respectively screwed to the two groups of slide seats (641).

5. A large infusion bottle blowing and molding production device according to claim 4, characterized in that: The unloading station (202) and the mold clamping station (203) are also equipped with a control assembly (7), the control assembly (7) comprising an assembly frame (71), a telescopic cylinder (72), a sliding frame (73), and an adjusting motor (74); the sliding frame (73) is slidably mounted in the assembly frame (71); the telescopic cylinder (72) is arranged in the assembly frame (71), and the two ends of the telescopic cylinder (72) are respectively fixedly connected to the sliding frame (73) and the assembly frame (71); the adjusting motor (74) is fixedly mounted on the sliding frame (73); a locking joint (741) is fixedly connected to the output shaft of the adjusting motor (74); a locking groove (621) is fixedly connected to the end of the threaded rod (62); the locking groove (621) and the locking joint (741) are kept nested and matched.