CN113601868B

CN113601868B - Plastic hollow ball forming equipment

Info

Publication number: CN113601868B
Application number: CN202110911057.7A
Authority: CN
Inventors: 周叶青
Original assignee: Tianchang Fubao Rubber & Plastic Products Co ltd
Current assignee: Tianchang Fubao Rubber & Plastic Products Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2023-03-14
Anticipated expiration: 2041-08-10
Also published as: CN113601868A

Abstract

The invention relates to the technical field of auxiliary devices for forming hollow spheres, in particular to plastic hollow sphere forming equipment; the automatic inflating device comprises a workbench, a turntable mechanism, a primary die forming mechanism and a finished product forming mechanism, wherein an operation station, a primary die forming station and a finished product forming station are arranged on the workbench, the primary die forming mechanism and the finished product forming mechanism are respectively positioned at the primary die forming station and the finished product forming station, the turntable mechanism is rotatably arranged on the workbench, three groups of positioning mechanisms are uniformly arranged at the top end of the turntable mechanism at equal angles, three groups of inflating mechanisms are arranged at the bottom end of the turntable mechanism at equal angles, each inflating mechanism comprises a lifting plate, a metal inflating pipe and a driving mechanism for driving the lifting plates to lift, the top of each metal inflating pipe is provided with a tip, and a support ring for placing an inflating nozzle is arranged on the outer side of each metal inflating pipe; only need a workman can accomplish the shaping of plastic clean shot, it is easy and simple to handle, improve production efficiency and use reliability.

Description

Plastic hollow ball forming equipment

Technical Field

The invention relates to the technical field of accessories for hollow ball forming, in particular to plastic hollow ball forming equipment.

Background

As is known, the plastic clean shot generally is used for making the bladder of football, basketball, volleyball, current plastic clean shot is in process of production, at first process into the plastic that has the cavity with the plastic piece and just mould, then carry out rubber coating installation charging connector to the plastic and just mould, put into the shaping mould with the plastic again, toward the inside inflating of plastic first mould, add the thermosulfurization simultaneously, make the plastic just mould become the clean shot, whole flow gets off and needs a plurality of workman's operations, the operation is more loaded down with trivial details, influence production efficiency, lead to using the reliability lower.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the plastic hollow ball forming equipment, which can complete the forming of the plastic hollow ball only by one worker, is simple and convenient to operate, and improves the production efficiency and the use reliability.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a plastic clean shot former, includes the workstation, still includes carousel mechanism, primary mould forming mechanism and finished product forming mechanism, be provided with operation station, primary mould forming station and finished product forming station on the workstation, primary mould forming mechanism and finished product forming mechanism are located primary mould forming station and finished product forming station department respectively, carousel mechanism is rotatable to be set up on the workstation to evenly be provided with three positioning mechanism of group at the top of carousel mechanism isogonism, three positioning mechanism of group correspond operation station, primary mould forming station and finished product forming station respectively, carousel mechanism's bottom isogonism is provided with three inflating mechanism of group, three inflating mechanism of group are located three positioning mechanism's of group below respectively, and three inflating mechanism of group all include lifter plate, metal inflating pipe and drive lifter plate and carry out the actuating mechanism that goes up and down, metal inflating pipe's bottom is passed the lifter plate and is supplied with the source intercommunication with the outside, and metal inflating pipe's top is provided with most advanced to be provided with the support ring that is used for placing the charging connector in metal tracheal outside.

Preferably, carousel mechanism includes servo motor, cavity back shaft, solid back shaft, air supply case and rotary disk, the top of cavity back shaft and the bottom middle part intercommunication of air supply case, the workstation is passed to the bottom of cavity back shaft to be provided with first gear in the outside of cavity back shaft, servo motor installs in the bottom of workstation to be provided with the second gear at servo motor's output, second gear and first gear engagement, the bottom of solid back shaft and the top middle part fixed connection of air supply case, the top of solid back shaft and the bottom middle part fixed connection of rotary disk.

Preferably, still include the air pump, the output of air pump is provided with the air supply pipe, the air supply pipe communicates through rotary seal structure with the bottom of cavity back shaft, the outside of air supply case is provided with three groups of air supply branch pipes, three groups of air supply branch pipes's output respectively with three groups through flexible pipe the bottom intercommunication of metal inflation pipe to all be provided with the solenoid valve in three groups of air supply branch pipes's the outside.

Preferably, the primary mold forming mechanism comprises a first support and a hydraulic oil cylinder, the first support is fixedly connected with the workbench, the hydraulic oil cylinder is installed on the first support, an upper forming mold is arranged at the bottom output end of the hydraulic oil cylinder, and lower forming molds matched with the upper forming mold are arranged on the three groups of positioning mechanisms.

Preferably, the finished product forming mechanism comprises a second support and two groups of opening and closing half dies, the second support is fixedly installed on the workbench, the tops of the two groups of opening and closing half dies are hinged to the second support, the two groups of opening and closing half dies can be combined into a finished product die with a spherical cavity, and the second support is provided with two groups of opening and closing cylinders for respectively driving the two groups of opening and closing half dies to open and close.

Preferably, be provided with two sets of breachs on the second support, two sets of breachs set up relatively to all can rotate at two sets of breach department and be provided with the hinge bar, the bottom of two sets of hinge bars is articulated with the outside of two sets of half modules that open and shut respectively, the one end of two sets of cylinders that open and shut all is articulated with the top of second support, and the output of two sets of cylinders that open and shut is articulated with the top of two sets of hinge bars respectively.

Preferably, the finished product mould is internally provided with a cavity, the bottom of the cavity is provided with an accommodating groove for accommodating the support ring, the top surface of the accommodating groove is level with the inner side wall of the cavity, and the bottom end of the finished product mould is provided with a through hole communicated with the accommodating groove.

Preferably, a part of the accommodating groove is located on one of the open-close half dies, and the other part of the accommodating groove is located on the other open-close half die.

Preferably, the positioning mechanism comprises a positioning table, a positioning groove is formed in the positioning table, a through hole communicated with the positioning groove is formed in the rotating disc, the top end of the metal inflating pipe penetrates through the through hole and extends into the positioning groove, and the lower forming die is located in the positioning groove.

Preferably, the driving mechanism comprises a cylinder support and a lifting cylinder, the cylinder support is fixedly installed at the bottom end of the rotating disk, the lifting cylinder is installed at the bottom end of the cylinder support, and the top output end of the lifting cylinder is fixedly connected with the bottom end of the lifting plate.

(III) advantageous effects

Compared with the prior art, the invention provides plastic hollow ball forming equipment, which has the following beneficial effects: the plastic hollow ball forming equipment comprises a metal inflating pipe, a worker firstly wears an inflating valve on the metal inflating pipe, the bottom end of the inflating valve is tightly attached to the top end of a support ring, then a plastic sheet is placed at a positioning mechanism in a folded mode, the plastic sheet at an operation station is rotated to a primary mold forming station through a turntable mechanism, the plastic sheet is cut through a primary mold forming mechanism in a pressing mode, the plastic sheet is processed into a plastic primary mold with a cavity structure, meanwhile, a lifting plate is driven to move upwards through a driving mechanism, the top of the metal inflating pipe is inserted into the plastic primary mold, the inflating valve is attached to the bottom of the plastic primary mold, then the turntable mechanism rotates the plastic primary mold to a finished product forming station, the plastic primary mold is wrapped in a mold cavity through a finished product forming mechanism, inflating is carried out inside the plastic primary mold through the inflating mechanism, the ball bladder is formed at the finished product forming mechanism, the plastic primary mold is processed into a hollow ball structure, finally, the turntable mechanism rotates the formed hollow ball to the operation station, the hollow ball to the hollow ball, the worker takes off the plastic nozzle and the plastic sheet, the hollow ball can be formed only by taking, the plastic hollow ball, and the plastic hollow ball can be continuously operated by the worker, and the hollow ball forming efficiency can be improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic elevation view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic perspective view of the primary mold forming mechanism of the present invention;

FIG. 5 is a schematic perspective view of the positioning mechanism and the pump mechanism of the present invention;

FIG. 6 is a schematic perspective view of the final forming mechanism of the present invention;

FIG. 7 is a schematic view of the connection structure of the opening and closing half-mold and the opening and closing cylinder according to the present invention;

in the drawings, the reference numbers: 1. a work table; 2. a primary mould forming mechanism; 3. a finished product forming mechanism; 4. a lifting plate; 5. a metal inflation pipe; 6. a support ring; 7. a servo motor; 8. a hollow support shaft; 9. a solid support shaft; 10. an air source box; 11. rotating the disc; 12. a first gear; 13. a second gear; 14. an air pump; 15. a gas supply pipe; 16. a gas supply branch pipe; 17. a telescopic pipe; 18. an electromagnetic valve; 19. a first bracket; 20. a hydraulic cylinder; 21. forming an upper die; 22. forming a lower die; 23. a second bracket; 24. opening and closing the half mould; 25. an opening and closing cylinder; 26. a hinged lever; 27. accommodating grooves; 28. a through hole; 29. a positioning table; 30. positioning a groove; 31. a cylinder support; 32. and a lifting cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-7, the plastic hollow ball forming equipment comprises a workbench 1, and further comprises a turntable mechanism, a primary mold forming mechanism 2 and a finished product forming mechanism 3, wherein an operation station, the primary mold forming station and the finished product forming station are arranged on the workbench 1, the primary mold forming mechanism 2 and the finished product forming mechanism 3 are respectively located at the primary mold forming station and the finished product forming station, the turntable mechanism is rotatably arranged on the workbench 1, three groups of positioning mechanisms are uniformly arranged at the top end of the turntable mechanism at equal angles, the three groups of positioning mechanisms respectively correspond to the operation station, the primary mold forming station and the finished product forming station, three groups of inflating mechanisms are arranged at the bottom end of the turntable mechanism at equal angles, the three groups of inflating mechanisms are respectively located below the three groups of positioning mechanisms, each group of inflating mechanisms comprises a lifting plate 4, a metal inflating pipe 5 and a driving mechanism for driving the lifting plate 4 to lift, the bottom end of the metal inflating pipe 5 passes through the lifting plate 4 and is communicated with an external air supply source, a tip is arranged at the top of the metal inflating pipe 5, and a support ring 6 for placing an inflating nozzle is arranged outside the metal inflating pipe 5; the utility model discloses a hollow ball forming device, including support ring 6, the plastic piece, carousel mechanism, metal inflation pipe 5, the workman wears the charging connector at first on metal inflation pipe 5, the bottom of charging connector pastes tightly with the top of support ring 6, then place the plastic piece folding in positioning mechanism department, the plastic piece of operation station department is rotatory to primary mould shaping station department through carousel mechanism, press the cutting to the plastic piece through primary mould forming mechanism 2, become the plastic primary mould that has the cavity structure with the plastic piece processing, simultaneously through actuating mechanism drive lifter plate 4 rebound, make the top of metal inflation pipe 5 insert to the inside of plastic primary mould, the charging connector pastes the bottom at the plastic primary mould, then carousel mechanism rotates the plastic primary mould to finished product shaping station department again, wrap the plastic primary mould in the die cavity through finished product forming mechanism 3, inflate toward the inside of plastic primary mould through inflating mechanism, accomplish the shaping of bladder in finished product forming mechanism 3 department, with the plastic primary mould processing into hollow ball structure, the hollow ball after last carousel mechanism will be shaped rotates to operation department to operation, the workman takes off the hollow ball, the placing of the plastic piece and the plastic only need to accomplish the hollow ball shaping operation and can improve the operation of plastic hollow ball shaping operation and the operation of taking, the hollow ball can be put, the improvement.

Referring to fig. 3 and 5, the turntable mechanism comprises a servo motor 7, a hollow supporting shaft 8, a solid supporting shaft 9, an air source box 10 and a rotating disc 11, the top end of the hollow supporting shaft 8 is communicated with the middle of the bottom end of the air source box 10, the bottom end of the hollow supporting shaft 8 penetrates through the workbench 1, a first gear 12 is arranged on the outer side of the hollow supporting shaft 8, the servo motor 7 is installed at the bottom end of the workbench 1, a second gear 13 is arranged at the output end of the servo motor 7, the second gear 13 is meshed with the first gear 12, the bottom end of the solid supporting shaft 9 is fixedly connected with the middle of the top end of the air source box 10, and the top end of the solid supporting shaft 9 is fixedly connected with the middle of the bottom end of the rotating disc 11; still include air pump 14, the output of air pump 14 is provided with air supply pipe 15, rotary seal structure intercommunication is passed through with the bottom of cavity back shaft 8 to air supply pipe 15, the outside of air supply box 10 is provided with three air supply branch pipes 16 of group, the output of three air supply branch pipes 16 of group respectively with three groups through flexible pipe 17 metal inflation pipe 5's bottom intercommunication to all be provided with solenoid valve 18 in the outside of three air supply branch pipes 16 of group, servo motor 7 drives second gear 13 and rotates, second gear 13 drives first gear 12 and hollow back shaft 8 and rotates, hollow back shaft 8 drives air supply box 10, solid back shaft 9 and rotary disk 11 rotate, thereby realize the rotation of rotary disk 11, servo motor 7 drives rotary disk 11 rotatory 120 at every turn, air pump 14 is in air supply box 10 with gas through air supply pipe 15, the gas in the air supply box 10 gets into metal inflation pipe 5 through air supply branch pipe 16 and flexible pipe 17, accomplishes the operation of inflating, solenoid valve 18 is used for controlling required metal inflation pipe 5 work.

Referring to fig. 4, the blank mold forming mechanism 2 includes a first support 19 and a hydraulic oil cylinder 20, the first support 19 is fixedly connected with the workbench 1, the hydraulic oil cylinder 20 is installed on the first support 19, an upper forming mold 21 is arranged at the output end of the bottom of the hydraulic oil cylinder 20, and lower forming molds 22 matched with the upper forming mold 21 are arranged on the three sets of positioning mechanisms; the hydraulic cylinder 20 drives the upper forming die 21 to move downwards, the upper forming die 21 and the lower forming die 22 are matched to complete the press cutting of the plastic sheet, the plastic sheet is pressed and cut into a plastic primary die with a cavity structure, and the primary die forming mechanism 2 is the same as the existing plastic primary die forming structure.

Referring to fig. 6, the finished product forming mechanism 3 includes a second support 23 and two sets of opening and closing half molds 24, the second support 23 is fixedly mounted on the workbench 1, the tops of the two sets of opening and closing half molds 24 are hinged to the second support 23, the two sets of opening and closing half molds 24 can be combined into a finished product mold with a spherical cavity, two sets of opening and closing cylinders 25 are arranged on the second support 23 and respectively drive the two sets of opening and closing half molds 24 to open and close, two sets of notches are arranged on the second support 23 and are opposite to each other, hinge rods 26 are rotatably arranged at the two sets of notches, the bottom ends of the two sets of hinge rods 26 are respectively hinged to the outer sides of the two sets of opening and closing half molds 24, strip-shaped adjusting holes are reserved at the hinge positions of the hinge rods and the opening and closing half molds to ensure that the opening and closing half molds can be opened and simultaneously ensure the sealing performance after the opening and closing of the opening and closing half molds, one end of the two sets of opening and closing cylinders 25 are hinged to the top ends of the two sets of opening and closing cylinders 25 are respectively hinged to the top ends of the hinge rods 26; when the plastic preliminary mould moves to finished product shaping station department, lifter plate 4 drives metal and beats trachea 5 and shaping preliminary mould and lifts by a certain height, makes things convenient for two half module 24 that open and shut to wrap the plastic preliminary mould in the die cavity, and two sets of cylinders 25 that open and shut drive hinge bar 26, drives half module 24 that opens and shuts through hinge bar 26 and opens and shuts.

Referring to fig. 7, a cavity is formed inside the finished mold, a receiving groove 27 for receiving the support ring 6 is formed at the bottom of the cavity, the top surface of the receiving groove 27 is flush with the inner side wall of the cavity, a through hole 28 communicated with the receiving groove 27 is formed at the bottom end of the finished mold, a part of the receiving groove 27 is located on one of the opening and closing mold halves 24, and the other part of the receiving groove 27 is located on the other opening and closing mold half 24; after the two groups of opening and closing half molds 24 are closed, the support ring 6 is positioned at the accommodating groove 27, and the top surface of the support ring 6 is level with the inner wall of the cavity, so that the forming effect of the inflating nozzle during the forming of the bladder is ensured.

Referring to fig. 5, the positioning mechanism includes a positioning table 29, a positioning groove 30 is disposed on the positioning table 29, a through hole communicated with the positioning groove 30 is disposed on the rotating disc 11, the top end of the metal inflation tube 5 penetrates through the through hole and extends into the positioning groove 30, the lower forming die 22 is disposed in the positioning groove 30, the folded plastic sheet is disposed in the positioning groove 30, and the upper forming die 21 and the lower forming die 22 are matched to complete the press-cutting forming of the plastic sheet.

Referring to fig. 5, the driving mechanism includes a cylinder bracket 31 and a lifting cylinder 32, the cylinder bracket 31 is fixedly mounted at the bottom end of the rotating disk 11, the lifting cylinder 32 is mounted at the bottom end of the cylinder bracket 31, and the top output end of the lifting cylinder 32 is fixedly connected with the bottom end of the lifting plate 4; the lifting cylinder 32 drives the lifting plate 4 to lift, and the plastic blank mold is inserted into the top of the metal inflating pipe 5 and lifted to the height of a finished product mold.

Example 2:

the inside of the half-open-close mold 24 is provided with a heating mechanism for heating the inside of a finished product mold, the forming of the bladder is completed through vulcanization, the heating mechanism adopts an electric heating mode, and after the forming, the inside of the half-open-close mold 24 can be subjected to air blowing and heat dissipation by a fan so as to rapidly enter the forming of the next plastic initial mold.

When the hollow ball forming machine is used, a worker firstly wears the inflating nozzle on the metal inflating pipe 5, the bottom end of the inflating nozzle is tightly attached to the top end of the support ring 6, then the plastic sheet is placed at the positioning mechanism in a folding mode, the plastic sheet at the operation station is rotated to the primary mold forming station through the turntable mechanism, the plastic sheet is cut through the primary mold forming mechanism 2 in a pressing mode, the plastic sheet is processed into a plastic primary mold with a cavity structure, meanwhile, the lifting plate 4 is driven to move upwards through the driving mechanism, the top of the metal inflating pipe 5 is inserted into the plastic primary mold, the inflating nozzle is attached to the bottom of the plastic primary mold, then the turntable mechanism rotates the plastic primary mold to the finished product forming station, the plastic primary mold is wrapped in the mold cavity through the finished product forming mechanism 3, the inflating mechanism inflates the inside of the plastic primary mold, the finished product forming mechanism 3 completes the forming of the ball liner, the plastic primary mold is processed into a hollow ball structure, finally, the turntable mechanism rotates the formed hollow ball to the operation station, the worker only needs to take the inflating nozzle and place the plastic sheet, the hollow ball forming efficiency can be improved, and the hollow ball forming efficiency can be improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components in the document are electrically connected with an external master controller and 220V mains supply, and the master controller can be a computer or other conventional known devices for playing a role in control.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The plastic hollow ball forming equipment comprises a workbench (1), and is characterized by further comprising a turntable mechanism, a primary mould forming mechanism (2) and a finished product forming mechanism (3), wherein an operation station, a primary mould forming station and a finished product forming station are arranged on the workbench (1), the primary mould forming mechanism (2) and the finished product forming mechanism (3) are respectively located at the primary mould forming station and the finished product forming station, the turntable mechanism is rotatably arranged on the workbench (1), three groups of positioning mechanisms are uniformly arranged at the top end of the turntable mechanism at equal angles, the three groups of positioning mechanisms respectively correspond to the operation station, the primary mould forming station and the finished product forming station, three groups of inflating mechanisms are arranged at equal angles at the bottom end of the turntable mechanism and are respectively located below the three groups of positioning mechanisms, the three groups of inflating mechanisms respectively comprise a lifting plate (4), a metal inflating pipe (5) and a driving mechanism for driving the lifting plate (4) to lift, the bottom end of the metal inflating pipe (5) passes through the lifting plate (4) and is communicated with an external air supply source, the top of the metal inflating pipe (5) is provided with a support ring (6) arranged at the outer side of the metal inflating pipe;

carousel mechanism includes servo motor (7), cavity back shaft (8), solid back shaft (9), air supply case (10) and rotary disk (11), the top of cavity back shaft (8) and the bottom middle part intercommunication of air supply case (10), workstation (1) is passed to the bottom of cavity back shaft (8) to be provided with first gear (12) in the outside of cavity back shaft (8), install in the bottom of workstation (1) servo motor (7) to be provided with second gear (13) at the output of servo motor (7), second gear (13) and first gear (12) meshing, the bottom of solid back shaft (9) and the top middle part fixed connection of air supply case (10), the top of solid back shaft (9) and the bottom middle part fixed connection of rotary disk (11).

2. The plastic hollow ball forming device according to claim 1, further comprising an air pump (14), wherein an air supply pipe (15) is arranged at an output end of the air pump (14), the air supply pipe (15) is communicated with the bottom end of the hollow supporting shaft (8) through a rotary sealing structure, three groups of air supply branch pipes (16) are arranged outside the air source box (10), output ends of the three groups of air supply branch pipes (16) are respectively communicated with the bottom ends of the three groups of metal inflating pipes (5) through telescopic pipes (17), and electromagnetic valves (18) are arranged outside the three groups of air supply branch pipes (16).

3. The plastic hollow sphere forming equipment according to claim 1, wherein the primary mold forming mechanism (2) comprises a first support (19) and a hydraulic cylinder (20), the first support (19) is fixedly connected with the workbench (1), the hydraulic cylinder (20) is installed on the first support (19), an upper forming mold (21) is arranged at an output end of the bottom of the hydraulic cylinder (20), and lower forming molds (22) matched with the upper forming mold (21) are arranged on the three sets of positioning mechanisms.

4. The plastic hollow sphere forming equipment according to claim 1, wherein the finished product forming mechanism (3) comprises a second support (23) and two sets of opening and closing half molds (24), the second support (23) is fixedly installed on the workbench (1), the tops of the two sets of opening and closing half molds (24) are hinged to the second support (23), the two sets of opening and closing half molds (24) are combined into a finished product mold with a spherical cavity, and the second support (23) is provided with two sets of opening and closing cylinders (25) for respectively driving the two sets of opening and closing half molds (24) to open and close.

5. The plastic hollow ball forming device according to claim 4, wherein two sets of notches are formed in the second support (23), the two sets of notches are opposite to each other, hinge rods (26) are rotatably disposed at the two sets of notches, the bottom ends of the two sets of hinge rods (26) are respectively hinged to the outer sides of the two sets of half-open/close modules (24), one ends of the two sets of open/close cylinders (25) are respectively hinged to the top end of the second support (23), and the output ends of the two sets of open/close cylinders (25) are respectively hinged to the top ends of the two sets of hinge rods (26).

6. The plastic hollow sphere forming equipment according to claim 4, wherein the finished mold is provided with a cavity inside, a receiving groove (27) for receiving the support ring (6) is formed in the bottom of the cavity, the top surface of the receiving groove (27) is flush with the inner side wall of the cavity, and the bottom end of the finished mold is provided with a through hole (28) communicated with the receiving groove (27).

7. The plastic hollow sphere forming apparatus according to claim 6, wherein a portion of the accommodating groove (27) is located on one of the split mold halves (24), and another portion of the accommodating groove (27) is located on the other split mold half (24).

8. The plastic hollow sphere forming device according to claim 3, wherein the positioning mechanism comprises a positioning table (29), a positioning groove (30) is formed in the positioning table (29), a through hole communicated with the positioning groove (30) is formed in the rotating disc (11), the top end of the metal inflating tube (5) penetrates through the through hole and extends into the positioning groove (30), and the forming lower die (22) is located in the positioning groove (30).

9. The plastic hollow sphere forming equipment according to claim 1, wherein the driving mechanism comprises a cylinder support (31) and a lifting cylinder (32), the cylinder support (31) is fixedly installed at the bottom end of the rotating disc (11), the lifting cylinder (32) is installed at the bottom end of the cylinder support (31), and the top output end of the lifting cylinder (32) is fixedly connected with the bottom end of the lifting plate (4).