Plastic pontoon blow molding device

Abstract

This invention discloses a blow molding device for plastic floats, including a worktable, an extrusion assembly, a moving mold, a fixed mold, and an air blowing assembly. The moving mold is slidably mounted on the worktable, and the fixed mold is fixed on the worktable. Both the fixed mold and the moving mold have molding cavities. A control box is mounted on the worktable, and the extrusion assembly is located above the control box. A shearing assembly for cutting the extruded material is located below the discharge port of the extrusion assembly on the fixed mold. The air blowing assembly is mounted on the worktable and located below the mold closing position of the moving mold and the fixed mold. By placing the extrusion assembly and the air blowing assembly on the upper and lower sides of the mold closing position of the moving mold and the fixed mold, this invention can reduce one molding station. Furthermore, by relying on the first push rod and the second push rod, the fixed mold and the moving mold can automatically unload the plastic float after mold opening, thereby effectively improving the efficiency of blow molding.

Description

TECHNICAL FIELD

[0001] The application discloses a plastic buoy blow molding device and belongs to the technical field of blow molding production equipment. BACKGROUND

[0002] The buoy is processed through a blow molding process and can float on the water surface. The buoy is made of strong and tough high-molecular polyethylene and the like and has good weather resistance and impact resistance. The buoy can resist ultraviolet rays, freezing, and chemical agent oil stains and the like and can automatically rise and fall with water level changes. The buoy is widely applied to the construction of floating platforms on water. SUMMARY

[0003] The application aims to solve the problems in the prior art and provides a plastic buoy blow molding device.

[0004] The application achieves the above-mentioned purpose through the following technical scheme. The plastic buoy blow molding device comprises a workbench, an extrusion assembly, a movable mold, a fixed mold and a blowing assembly. The movable mold is slidingly arranged on the workbench. The fixed mold is fixed on the workbench and is provided with a forming cavity in the movable mold and the fixed mold. The workbench is provided with a control box. The extrusion assembly is located above the control box. The fixed mold is provided with a shearing assembly below a discharge port of the extrusion assembly for shearing the extruded material. The blowing assembly is installed on the workbench and is located below a mold closing position of the movable mold and the fixed mold. The control box is provided with a power mechanism for driving the movable mold to slide. The power mechanism comprises a first movable plate, a second movable plate, a locking assembly and a transmission assembly. The first movable plate is fixedly provided with a pushing column. One end of the pushing column is fixedly connected with the movable mold after penetrating through the control box and the fixed mold. The second movable plate is provided with a first push rod. The first push rod extends into the forming cavity of the fixed mold after penetrating through the control box. The transmission assembly is in transmission connection with the first movable plate and is used for driving the first movable plate to slide horizontally. The locking assembly is used for keeping the second movable plate and the first movable plate in a locked state. The control box is provided with a driving rod on a side close to the fixed mold. The driving rod is used for releasing the locked state of the first movable plate and the second movable plate. The workbench is further provided with a through hole for the plastic buoy to fall.

[0005] Preferably, the transmission assembly comprises a first motor and a screw rod. Both ends of the screw rod are in rotation connection with the control box. The first motor is installed on the control box and the output shaft of the first motor is fixedly connected with one end of the screw rod. The first movable plate is in screw connection with the screw rod. The second movable plate is provided with a first through hole for avoiding the screw rod.

[0006] Preferably, the locking assembly comprises a fixed block, a sliding block, a fixed plate and a first spring, the second movable plate is located on the side of the first movable plate away from the driving rod, the first movable plate is provided with a second through hole for the driving rod to pass through, and the first movable plate is further provided with a sliding groove, the sliding groove is arranged perpendicularly intersecting the first through hole, the sliding block is slidingly arranged in the sliding groove, the fixed plate is installed on the side of the first movable plate, the two ends of the first spring are respectively in contact with the first movable plate and the sliding block, and the first spring applies an outward force to the sliding block, the fixed block is in L-shaped structure, one end of the fixed block is fixed on the second movable plate, the sliding block is provided with a third through hole for the driving rod to pass through, the driving rod and the sliding block are provided with first wedge surfaces matched with each other, and the fixed block and the sliding block are provided with second wedge surfaces matched with each other.

[0007] Preferably, the movable mold is provided with a second push rod, one side of the workbench is provided with a limiting baffle, the second push rod pushes out the plastic float in the movable mold after contacting the limiting baffle, the second push rod is in ladder shaft structure, the end with large diameter is located on the inner side of the movable mold, and the end with small diameter extends to the outer side of the movable mold, the second push rod is further provided with a reset assembly, the reset assembly comprises a second spring and a nut, the nut is installed on one end of the second push rod, the second spring is sleeved on the outer side of the second push rod, and the two ends of the second spring are respectively in contact with the movable mold and the nut.

[0008] Preferably, the shearing assembly comprises a second motor, a driving gear, a driven gear, a first cutter and a mounting frame, the mounting frame is fixed on the fixed mold, the second motor is arranged on the mounting frame, the driving gear is fixed on the output shaft of the second motor, the driven gear is rotatably arranged on the mounting frame, and the first cutter is fixed on the driven gear.

[0009] Preferably, the blowing assembly comprises a cylinder, an air inlet nozzle, a first mounting plate, a second mounting plate, a limiting bolt, a third spring and a gas pump, the cylinder and the gas pump are both installed on the workbench, the piston of the cylinder is fixedly connected with the first mounting plate, one end of the limiting bolt is fixedly connected with the second mounting plate after penetrating through the first mounting plate, the third spring is sleeved on the outer side of the limiting bolt, and the two ends of the third spring are respectively in contact with the first mounting plate and the second mounting plate, the air inlet nozzle is fixed on the first mounting plate, one end of the air inlet nozzle is slidingly arranged with the second mounting plate, and a hose is connected between the other end of the air inlet nozzle and the gas pump.

[0010] Preferably, the workbench is provided with a removing assembly, the removing assembly comprises a second cutter and a third mounting plate, the third mounting plate is fixed on the workbench, the second cutter is arranged on the third mounting plate, and the top surface of the second cutter is flush with the bottom surface of the movable mold.

[0011] Compared with the prior art, the present application has the beneficial effects that:

[0012] By setting the power mechanism, the second push rod, the limiting baffle and the reset assembly, the power mechanism can drive the movable mold to slide horizontally, so that the movable mold and the fixed mold realize mold opening and mold closing. In the process of mold opening, the first push rod moves with the second movable plate and pushes the plastic float out of the fixed mold. Then the second movable plate moves a distance and remains stationary, while the movable mold continues to move towards the limiting baffle. Then the plastic float is pushed out of the movable mold by the second push rod and falls out of the through hole. In this way, automatic blow molding and unloading can be realized.

[0013] By setting the extrusion assembly and the blowing assembly on the upper and lower sides of the position where the movable mold and the fixed mold are closed, one molding station can be reduced, the land space of the blow molding equipment is smaller, and in the process of opening the movable mold and the fixed mold, the excess waste material at the blow molding position of the plastic float is cut off by the cutting assembly. Thus, subsequent secondary processing can be avoided, the labor intensity of workers is reduced, the waiting time for blow molding is short, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the plastic float blow molding device of the present application;

[0015] Figure 2 It is an internal structure schematic view of the plastic float blow molding device of the present application;

[0016] Figure 3 It is a sectional view of the power mechanism in the present application;

[0017] Figure 4 It is a structure schematic view of the power mechanism, the fixed mold and the movable mold in the present application;

[0018] Figure 5 It is a structure schematic view of the fixed mold, the first push rod and the push column in the present application;

[0019] Figure 6 It is a structure schematic view of the fixed block and the sliding block in the present application;

[0020] Figure 7 It is a structure schematic view of the blowing assembly in the present application;

[0021] Figure 8 It is a structure schematic view of the cutting assembly in the present application;

[0022] Reference numerals: 1. Worktable; 2. Power mechanism; 3. Control box; 4. Extrusion assembly; 5. Shearing assembly; 6. Limiting baffle; 7. Fixed mold; 8. Moving mold; 9. Through hole; 10. First motor; 11. Second movable plate; 12. First movable plate; 13. First push rod; 14. Screw; 15. Air blowing assembly; 16. Third mounting plate; 17. Second cutter; 18. Plastic float; 19. Second spring; 20. Second push rod; 21. Nut; 22. Drive rod; 23. 24. Fixed plate; 25. Fixed block; 26. Sliding block; 27. First spring; 28. First through hole; 29. ​​Second through hole; 30. Third through hole; 31. Push column; 32. First wedge surface; 33. Second wedge surface; 34. Cylinder; 35. Limit bolt; 36. Third spring; 37. Air inlet elbow; 38. Second mounting plate; 39. First mounting plate; 40. Second motor; 41. Driven gear; 42. Driven gear; 43. First cutter; 44. Mounting bracket. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-8As shown, a plastic float blow molding device includes a worktable 1, an extrusion assembly 4, a moving mold 8, a fixed mold 7, and an air blowing assembly 15. The moving mold 8 is slidably mounted on the worktable 1, and the fixed mold 7 is fixed on the worktable 1. Both the fixed mold 7 and the moving mold 8 have molding cavities. A control box 3 is mounted on the worktable 1, and the extrusion assembly 4 is located above the control box 3. A shearing assembly 5 for cutting the extruded material is located below the discharge port of the extrusion assembly 4 on the fixed mold 7. The air blowing assembly 15 is mounted on the worktable 1 and located below the mold closing position of the moving mold 8 and the fixed mold 7. A power mechanism 2 for driving the moving mold 8 to slide is located inside the control box 3. The power mechanism 2 includes a first movable plate 12, a second movable plate 11, a locking assembly, and a... The transmission assembly includes a push column 30 fixedly mounted on the first movable plate 12. One end of the push column 30 passes through the control box 3 and the fixed mold 7 and is fixedly connected to the moving mold 8. A first push rod 13 is provided on the second movable plate 11. The first push rod 13 passes through the control box 3 and extends into the molding cavity of the fixed mold 7. The transmission assembly is connected to the first movable plate 12 and is used to drive the first movable plate 12 to slide horizontally. The locking assembly is used to keep the second movable plate 11 locked to the first movable plate 12. A drive rod 22 is provided on the side of the control box 3 near the fixed mold 7. The drive rod 22 is used to release the locking state of the first movable plate 12 and the second movable plate 11. The worktable 1 is also provided with a through hole 9 for the plastic float 18 to fall.

[0025] The transmission assembly includes a first motor 10 and a screw 14. The two ends of the screw 14 are rotatably connected to the control box 3. The first motor 10 is mounted on the control box 3, and the output shaft of the first motor 10 is fixedly connected to one end of the screw 14. The first movable plate 12 is threadedly connected to the screw 14. The second movable plate 11 is provided with a first through hole 27 to avoid the screw 14. The first motor 10 drives the screw 14 to rotate in both directions, so that the first movable plate 12 drives the push column 30 to move synchronously. This allows the moving mold 8 to slide horizontally along the worktable 1, thus realizing the closing and opening of the moving mold 8 and the fixed mold 7. The second movable plate 11 is locked to the first movable plate 12 by a locking assembly. Thus, when the first movable plate 12 slides during the mold opening process, the second movable plate 11 will move synchronously with the first movable plate 12.

[0026] The locking assembly includes a fixed block 24, a sliding block 25, a fixed plate 23, and a first spring 26. A second movable plate 11 is located on the side of the first movable plate 12 away from the drive rod 22. The first movable plate 12 has a second through hole 28 for the drive rod 22 to pass through, and also has a groove that intersects and is perpendicular to the first through hole 27. The sliding block 25 is slidably disposed within the groove. The fixed plate 23 is mounted on the side of the first movable plate 12. Both ends of the first spring 26 abut against the first movable plate 12 and the sliding block 25, respectively, and apply a force to the sliding block 25 that protrudes from the fixed plate 23. The fixed block 24 has an L-shaped structure, and one end is fixed to the second movable plate 24. On the movable plate 11, the sliding block 25 is provided with a third through hole 29 for the drive rod 22 to pass through. The drive rod 22 and the sliding block 25 are provided with mutually cooperating first wedge surfaces 31. The fixed block 24 and the sliding block 25 are both provided with mutually cooperating second wedge surfaces 32. When the transmission assembly drives the first movable plate 12 to move towards the fixed mold 7, the push column 30 drives the movable mold 8 away from the fixed mold 7, thereby realizing mold opening. Since one end of the sliding block 25 is blocked by the fixed block 24 when the first movable plate 12 slides, the sliding block 25 drives the fixed block 24 and the second movable plate 11 to maintain the same movement state as the first movable plate 12. This allows the first wedge surface 31 on the second movable plate 11 to be opened. Push rod 13 ejects the blow-molded plastic float 18 from the fixed mold 7, ensuring that the plastic float 18 moves synchronously with the moving mold 8. After the plastic float 18 has moved a certain distance, drive rod 22 inserts into the third through hole 29. Simultaneously, drive rod 22 and sliding block 25 cooperate with the first wedge surface 31, causing drive rod 22 to drive sliding block 25 to slide in the groove and compress the first spring 26, retracting one end of sliding block 25 into the groove until sliding block 25 is no longer blocked by fixed block 24. When the transmission assembly drives the first movable plate 12 to slide, the second movable plate 11 remains stationary due to the obstruction of drive rod 22. The second movable plate 11 and the first movable plate 12... 2 is released from its locked state, while the moving mold 8 continues to slide, preparing for the subsequent disengagement of the plastic float 18 from the moving mold 8. During the mold closing process, the transmission component first drives the first movable plate 12 and the push column 30 to reset. The moving mold 8 moves synchronously with the first movable plate 12. When the drive rod 22 disengages from the third through hole 29, the sliding block 25 resets under the action of the first spring 26. When the first movable plate 12 pushes the second movable plate 11 to abut against the side wall of the control box 3, the sliding block 25 is compressed by the second wedge surface 23 on the fixed block 24 and the sliding block 25, and then resets again. In this way, the first movable plate 12 and the second movable plate 11 can be locked again.

[0027] A second push rod 20 is provided on the moving mold 8. A limit baffle 6 is provided on one side of the worktable 1. After the second push rod 20 abuts against the limit baffle 6, it pushes out the plastic float 18 inside the moving mold 8. The second push rod 20 has a stepped shaft structure, with the larger diameter end located inside the moving mold 8 and the smaller diameter end extending to the outside of the moving mold 8. A reset assembly is also provided on the second push rod 20. The reset assembly includes a second spring 19 and a nut 21. The nut 21 is installed at one end of the second push rod 20, and the second spring 19 is sleeved on the second push rod 8. The outer side of the second push rod 20, and the two ends of the second spring 19 respectively abut against the moving mold 8 and the nut 21. When the plastic float 18 is ejected from the fixed mold 7 by the first push rod 13, the first push rod 13 can no longer move, while the moving mold 8 continues to slide towards the limiting baffle 6 under the drive of the push column 30. When one end of the second push rod 20 abuts against the limiting baffle 6, it begins to compress the second spring 19, so that the second push pushes the plastic float 18 out of the moving mold 8 until the plastic float 18 falls out of the through hole 9.

[0028] The shearing assembly 5 includes a second motor 39, a drive gear 40, a driven gear 41, a first cutter 42, and a mounting frame 43. The mounting frame 43 is fixed on the fixed mold 7. The second motor 39 is mounted on the mounting frame 43. The drive gear 40 is fixed on the output shaft of the second motor 39. The driven gear 41 is rotatably mounted on the mounting frame 43. The first cutter 42 is fixed on the driven gear 41. The second motor 39 drives the drive gear 40 to rotate forward or backward by a certain angle, so that the driven gear 41 drives the first cutter 42 to rotate. In this way, the extruded fluid raw material can be cut off, thus preparing for the subsequent blow molding of the fluid raw material.

[0029] The air blowing assembly 15 includes a cylinder 33, an air inlet bend 36, a first mounting plate 38, a second mounting plate 37, a limiting bolt 34, a third spring 35, and an air pump. Both the cylinder 33 and the air pump are mounted on the worktable 1. The piston of the cylinder 33 is fixedly connected to the first mounting plate 38. One end of the limiting bolt 34 passes through the first mounting plate 38 and is fixedly connected to the second mounting plate 37. The third spring 35 is sleeved on the outside of the limiting bolt 34, and its two ends respectively abut against the first mounting plate 38 and the second mounting plate 37. The air inlet bend 36 is fixed to the first mounting plate 38, and one end of the air inlet bend 36 is slidably disposed with respect to the second mounting plate 37. The other end is connected to the air pump via a flexible hose. When the fluid material is extruded by the extrusion assembly 4, the fluid material is a hollow structure. The structure involves lowering one end of the moving mold 8 and the fixed mold 7 to their lowest points, then the cylinder 33 drives the first mounting plate 38 to move upward. When the second mounting plate 37 touches the moving mold 8 and the fixed mold 7, the first mounting plate 38 and the air inlet bend 36 continue to move upward until the air inlet bend 36 is inserted into the hollow fluid material. Then the moving mold 8 and the fixed mold 7 close, and the air pump then introduces gas into the air inlet bend 36 to complete the blow molding of the fluid material. Before the mold opens, the cylinder 33 first drives the first mounting plate 38 to descend, allowing the air inlet bend to be pulled out from the formed plastic float 18. The second mounting plate 37 remains in contact with the fixed mold 7 and the moving mold 8 under the action of the third spring 35. This can prevent the material from adhering to the air inlet bend 36 and affecting the next blow molding.

[0030] The workbench 1 is equipped with a rejection assembly, which includes a second cutter 17 and a third mounting plate 16. The third mounting plate 16 is fixed on the workbench 1, and the second cutter 17 is mounted on the third mounting plate 16. The top surface of the second cutter 17 is flush with the bottom surface of the moving mold 8. During the mold opening process between the moving mold 8 and the fixed mold 7, the plastic float 18 is pushed out from the fixed mold 7 by the first push rod 13 and kept pressed against the moving mold 8. As the plastic float 18 slides synchronously with the moving mold 8, the blow molding position of the plastic float 18 passes through the second cutter 17 when it moves with the moving mold 8. In this way, the second cutter 17 can remove the excess waste material on the plastic float 18 without manual processing, which effectively reduces the labor intensity of workers.

[0031] Working principle: In the blow molding of the float, the fixed mold 7 remains stationary. When the moving mold 8 and the fixed mold 7 close, to prevent the fluid material extruded by the extrusion assembly 4 from falling onto the first push rod 13, the transmission assembly drives the moving mold 8 to move a certain distance towards the fixed mold 7 until the first push rod 13 is far away from directly below the extrusion position of the extrusion assembly 4. At this time, there is still a large gap between the moving mold 8 and the fixed mold 7. Then, the extrusion assembly 4 extrudes the fluid material, which falls between the moving mold 8 and the fixed mold 7, until the fluid material falls to the lowest point between the fixed mold 7 and the moving mold 8. After reaching a low point, the air blowing assembly 15 moves upward and inserts the air blowing port upward into the hollow fluid material. Then, the transmission assembly drives the moving mold 8 to slide smoothly and close with the fixed mold 7. At the moment before mold closing, the shearing assembly 5 cuts the fluid material. The upper end of the cut fluid material falls between the moving mold 8 and the fixed mold 7 by gravity. Subsequently, the air pump delivers gas to the air inlet bend 36, so that the fluid material adheres tightly to the inner walls of the fixed mold 7 and the moving mold 8 to achieve the blow molding effect. During the mold closing process, the first movable plate 12 approaches... The second movable plate 11 abuts against the control box 3 to achieve a locked state. After the plastic float 18 is blow-molded, the air blowing assembly 15 is lowered first, causing the air inlet bend 36 to disengage from the plastic float 18. Then, the transmission assembly drives the first movable plate 12 to move towards the fixed mold 7, causing the moving mold 8 to open with the fixed mold 7. At this time, the first push rod 13 moves synchronously with the second movable plate 11, causing the plastic float 18 to be ejected from the fixed mold 7. Subsequently, the plastic float 18 and the moving mold 8 move synchronously. When passing the rejection assembly, the second cutter 1... 7. Remove excess waste material from the plastic float 18. When the drive rod 22 abuts against the sliding block 25, the sliding block 25 retracts into the groove, releasing the locking state of the first movable plate 12 and the second movable plate 11. In this way, the first movable plate 12 can continue to be driven by the transmission component, while the second movable plate 11 remains stationary. When the moving mold 8 is continued to be pushed by the push column 30, when the second push rod 20 abuts against the limit baffle 6, the plastic float 18 can be pushed out of the moving mold 8 and fall from the through hole 9 to achieve automatic unloading.

[0032] It will be apparent to those skilled in the art that the present 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 its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic float blow molding device, comprising a worktable (1), an extrusion assembly (4), a moving mold (8), a fixed mold (7), and an air blowing assembly (15), characterized in that, The moving mold (8) is slidably mounted on the worktable (1), and the fixed mold (7) is fixed on the worktable (1). Both the fixed mold (7) and the moving mold (8) are provided with forming cavities. The worktable (1) is provided with a control box (3). The extrusion assembly (4) is located above the control box (3). The fixed mold (7) is provided with a shearing assembly (5) for cutting the extruded material below the discharge port of the extrusion assembly (4). The air blowing assembly (15) is mounted on the worktable (1) and located below the mold closing position of the moving mold (8) and the fixed mold (7). The control box (3) is provided with a power mechanism (2) for driving the moving mold (8) to slide. The power mechanism (2) includes a first movable plate (12). The second movable plate (11), locking assembly, and transmission assembly are provided. A push column (30) is fixedly installed on the first movable plate (12). One end of the push column (30) passes through the control box (3) and the fixed mold (7) and is fixedly connected to the moving mold (8). A first push rod (13) is provided on the second movable plate (11). The first push rod (13) passes through the control box (3) and extends into the molding cavity of the fixed mold (7). The transmission assembly is connected to the first movable plate (12) and is used to drive the first movable plate (12) to slide horizontally. The locking assembly is used to keep the second movable plate (11) and the first movable plate (12) locked. The control box (3) is provided with a locking assembly on the side near the fixed mold (7). The drive rod (22) is used to release the locking state of the first movable plate (12) and the second movable plate (11). The worktable (1) is also provided with a through hole (9) for the plastic float (18) to fall. The locking assembly includes a fixing block (24), a sliding block (25), a fixing plate (23), and a first spring (26). The second movable plate (11) is located on the side of the first movable plate (12) away from the drive rod (22). The first movable plate (12) is provided with a second through hole (28) for the drive rod (22) to pass through. The first movable plate (12) is also provided with a sliding groove. The sliding groove is perpendicular to the first through hole (27). The sliding block (24) is also provided with a sliding block (25). 5) The sliding arrangement is in the groove. The fixed plate (23) is installed on the side of the first movable plate (12). The two ends of the first spring (26) abut against the first movable plate (12) and the sliding block (25) respectively, and apply a force to the sliding block (25) that protrudes from the fixed plate (23). The fixed block (24) has an L-shaped structure, and one end of it is fixed on the second movable plate (11). The sliding block (25) is provided with a third through hole (29) for the drive rod (22) to pass through. The drive rod (22) and the sliding block (25) are provided with a first wedge-shaped surface (31) that cooperates with each other. The fixed block (24) and the sliding block (25) are both provided with a second wedge-shaped surface (32) that cooperates with each other.The air blowing assembly (15) includes a cylinder (33), an air inlet bend (36), a first mounting plate (38), a second mounting plate (37), a limiting bolt (34), a third spring (35), and an air pump. The cylinder (33) and the air pump are both mounted on the workbench (1), and the piston of the cylinder (33) is fixedly connected to the first mounting plate (38). One end of the limiting bolt (34) passes through the first mounting plate (38) and is fixedly connected to the second mounting plate (37). The third spring (35) is sleeved on the outside of the limiting bolt (34), and its two ends abut against the first mounting plate (38) and the second mounting plate (37) respectively. The air inlet bend (36) is fixed on the first mounting plate (38), and one end of the air inlet bend (36) is slidably disposed with respect to the second mounting plate (37), while the other end is connected to the air pump via a flexible hose.

2. The plastic float blow molding device according to claim 1, characterized in that, The transmission assembly includes a first motor (10) and a screw (14). The two ends of the screw (14) are rotatably connected to the control box (3). The first motor (10) is mounted on the control box (3), and the output shaft of the first motor (10) is fixedly connected to one end of the screw (14). The first movable plate (12) is threadedly connected to the screw (14). The second movable plate (11) is provided with a first through hole (27) to avoid the screw (14).

3. The plastic float blow molding device according to claim 1, characterized in that, The moving mold (8) is provided with a second push rod (20), and a limit baffle (6) is provided on one side of the worktable (1). After the second push rod (20) abuts against the limit baffle (6), it pushes out the plastic float (18) inside the moving mold (8). The second push rod (20) has a stepped shaft structure, and the end with a larger diameter is located inside the moving mold (8), while the end with a smaller diameter extends to the outside of the moving mold (8). The second push rod (20) is also provided with a reset assembly, which includes a second spring (19) and a nut (21). The nut (21) is installed at one end of the second push rod (20), and the second spring (19) is sleeved on the outside of the second push rod (20). The two ends of the second spring (19) abut against the moving mold (8) and the nut (21) respectively.

4. The plastic float blow molding device according to claim 1, characterized in that, The shearing assembly (5) includes a second motor (39), a drive gear (40), a driven gear (41), a first cutter (42), and a mounting bracket (43). The mounting bracket (43) is fixed on the fixed mold (7). The second motor (39) is mounted on the mounting bracket (43). The drive gear (40) is fixed on the output shaft of the second motor (39). The driven gear (41) is rotatably mounted on the mounting bracket (43). The first cutter (42) is fixed on the driven gear (41).

5. The plastic float blow molding device according to claim 1, characterized in that, The workbench (1) is provided with a rejection assembly, which includes a second cutter (17) and a third mounting plate (16). The third mounting plate (16) is fixed on the workbench (1), and the second cutter (17) is disposed on the third mounting plate (16), with the top surface of the second cutter (17) flush with the bottom surface of the moving mold (8).

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