Cooling device for plastic bottle processing

Abstract

The application belongs to the technical field of cooling devices, and discloses a cooling device for plastic bottle processing, which comprises a supporting seat, a rotating column rotatably arranged on the top of the supporting seat, a rotating assembly arranged on the supporting seat and used for driving the rotating column to rotate, a cooling assembly arranged on the supporting seat and used for cooling the plastic bottle, a rotating disc coaxially arranged on the top of the rotating column, a plurality of rotating blocks penetrating through the top of the rotating disc, two limiting columns slidingly arranged on the bottom of each rotating block, a rotating assembly arranged on the rotating disc and the supporting seat and used for driving the plurality of rotating blocks to rotate, and a displacement mechanism arranged on the rotating block and the supporting seat and used for driving the two limiting columns to move close to or away from each other. The application improves the stability of the bottle embryo during cooling, reduces the probability of the bottle embryo body falling off from the limiting column, and thus ensures the normal cooling work of the device.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, and in particular to a cooling device for processing plastic bottles. Background Technology

[0002] Blow molding machines are important pieces of equipment on plastic bottle production lines. They are used to blow plastic preforms into finished bottles. During the blowing process, the preforms need to be heated at high temperatures to soften them, and then quickly cooled and shaped.

[0003] Chinese utility model patent CN222571562U discloses a rotary blow molding machine preform cooling device, including a support platform and a support base. The surface of the support platform is provided with a rotating component and a cooling component. The rotating component includes an electric turntable, which is rotatably mounted on the top of the support platform. A connecting block is provided on the surface of the electric turntable, and a connecting rod is magnetically connected inside the connecting block. The bottom of the connecting rod is inserted into the preform body, and a small gear is provided on the top of the connecting rod. The cooling component includes a fixing plate, which is located on the top of the support base. A heat dissipation cylinder is provided in the middle of the fixing plate, and a semi-annular plate is provided on the top of the fixing plate. An installation plate is provided inside the heat dissipation cylinder, and a servo motor is provided on the surface of the installation plate. The drive shaft of the servo motor is provided with fan blades.

[0004] In the process of cooling plastic bottles, the preform body of the aforementioned rotary blow molding machine directly inserts the preform body into the bottom of the connecting rod. At the same time, the plastic preform body is rotating and the wind force generated by the fan blades increases the probability that the preform body body will fall off the bottom of the connecting rod, thus affecting the normal heat dissipation work of the device. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a cooling device for processing plastic bottles.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cooling device for processing plastic bottles, comprising a support base and a rotating column rotatably mounted on the top of the support base. The support base is provided with a rotating assembly for driving the rotating column to rotate, and a cooling assembly for cooling the plastic bottle is provided on the support base. A turntable coaxially arranged with the rotating column is fixed on the top of the rotating column. Multiple rotating blocks are provided through the top of the turntable. Two limiting posts are slidably arranged at the bottom of each rotating block. A rotating assembly for driving the multiple rotating blocks to rotate is provided on both the turntable and the support base. A displacement mechanism for driving the two limiting posts to move closer or further apart is provided on both the rotating blocks and the support base.

[0007] By adopting the above technical solution, the preform is first placed on two limiting posts. The displacement mechanism moves the two sets of limiting posts away from each other and presses the preform together. Then, the rotating component drives the rotating post to rotate, causing the turntable connected to the rotating post, the rotating block connected to the turntable, and the limiting post connected to the rotating block to all rotate. During this process, the rotating component drives the rotating block to rotate while the cooling component cools the preform, improving the stability of the preform during the cooling process and reducing the probability of the preform body falling off the limiting posts, thereby ensuring the normal cooling operation of the device.

[0008] Furthermore, the displacement mechanism includes a displacement assembly, which includes a push rod that passes through the top of the rotating block and slides in engagement with it, and a connecting block fixed to the side wall of the limiting post near the push rod. The bottom of the push rod and the junction of the side walls on both sides of the push rod are provided with inclined surfaces. The distance between the two sets of inclined surfaces gradually decreases from top to bottom. Both sets of inclined surfaces abut against the connecting block on the same side. The number of connecting blocks is equal to the number of limiting posts, and their positions correspond one-to-one. The distance between the side walls of the two connecting blocks that are close to each other gradually decreases from top to bottom. The displacement components gradually decrease from top to bottom. The displacement components also include a limiting block fixed to the top of the push rod, a support spring fixed between the top of the limiting block and the rotating block and sleeved on the push rod, and a universal ball bearing movably installed on the top of the limiting block. The number of displacement components is equal to the number of rotating blocks and their positions correspond one-to-one. The displacement mechanism also includes a reset component for driving the two limiting posts to move closer to each other when the push rod rises, and a lifting component for driving the push rod to rise and fall. The number of reset components is equal to the number of limiting posts and their positions correspond one-to-one.

[0009] By adopting the above technical solution, the lifting assembly drives the push rod to descend, and the support spring gradually contracts. Since the bottom of the push rod and the junction of its side walls are both provided with inclined surfaces, the distance between the two sets of inclined surfaces gradually decreases from top to bottom. Both sets of inclined surfaces abut against the connecting blocks on the same side. The number of connecting blocks is equal to the number of limiting posts, and their positions correspond one-to-one. The distance between the side walls of the two connecting blocks gradually decreases from top to bottom, causing the two connecting blocks and the two limiting posts to move away from each other, thereby achieving the purpose of clamping the preform. Similarly, the lifting assembly drives the push rod to rise, and the reset assembly drives the two blocks closer together and resets them, thereby achieving the purpose of releasing the preform.

[0010] Furthermore, a sliding through hole is provided through the rotating block. The number of sliding through holes is equal to the number of sets of reset components and their positions correspond one-to-one. The reset component includes a sliding block that is slidably disposed in the sliding through hole and fixed to the limiting post, a reset spring fixed between the sliding block and the sliding through hole, and a limiting rod that is disposed through the sliding block and slidably engaged. The limiting rod is fixed in the sliding through hole, and the reset spring is sleeved on the limiting rod.

[0011] By adopting the above technical solution, during the process of the two limiting posts moving away from each other, the sliding blocks connected to the two limiting posts move away from each other, the two sets of return springs are gradually compressed, and during the process of the push rod rising, the return springs gradually extend and return to their original position, so that the sliding blocks connected to the return springs and the limiting posts connected to the sliding blocks move closer to the push rod, so as to ensure the work of clamping or releasing the preform.

[0012] Furthermore, the rotating assembly includes a housing fixedly sleeved on the support base, an internal gear ring fixed on the inner side wall of the housing and coaxially arranged with the turntable, and a rotating gear fixedly sleeved on the rotating block and meshing with the internal gear ring. The number of rotating gears is equal to the number of rotating blocks and their positions correspond one-to-one. Two sets of operating through holes symmetrically arranged about the axis of the housing are provided through the side wall of the housing.

[0013] By adopting the above technical solution, during the rotation of the turntable, both the rotating block connected to the turntable and the rotating gear connected to the rotating block rotate. Since the rotating gear meshes with the internal gear ring, the rotating block connected to the rotating gear rotates, thereby achieving the purpose of rotating the preform.

[0014] Furthermore, the lifting assembly includes a mounting bracket fixed to the housing and an arc block fixed to the mounting bracket. The distance between the side walls at both ends of the arc block gradually decreases from top to bottom, and the distance between the top of the universal ball bearing and the top of the turntable is greater than the distance between the bottom of the arc block and the top of the turntable.

[0015] By adopting the above technical solution, during the rotation of the turntable, the rotating block connected to the turntable, the push rod connected to the rotating block, the limiting block connected to the push rod, and the universal ball connected to the limiting block all move. During this process, the universal ball first contacts the bottom of the arc block, and is squeezed downwards, causing the push rod to descend and the support spring to contract. Finally, the universal ball separates from the arc block, the support spring extends, and drives the push rod upwards, thereby achieving the purpose of clamping or releasing the preform using the two sets of limiting posts. Because the distance between the sidewalls at both ends of the arc block gradually decreases from top to bottom, it facilitates the movement of the universal ball to the bottom of the arc block.

[0016] Furthermore, the cooling component includes a cooler fixed on the mounting bracket, an exhaust pipe fixed and connected to the air outlet of the cooler, and a heat dissipation box that is installed through and fixed on the outer casing. The end of the exhaust pipe away from the cooler is fixed and connected to the heat dissipation box, and multiple ventilation holes are provided through the side wall of the heat dissipation box near the support base.

[0017] By adopting the above technical solution, after the air cooler starts working, it draws in the outside air through its air inlet and cools the air. Then, the cold air is discharged from the air cooler's air outlet to the exhaust pipe, and then discharged into the heat dissipation box through the exhaust pipe. Finally, it is discharged through the air outlet and the preform is cooled.

[0018] Furthermore, the push rod has a cavity extending into the limiting block, and the bottom of the push rod has an exhaust hole communicating with the cavity. An auxiliary mechanism is provided on the turntable, and the auxiliary mechanism includes an auxiliary component. The auxiliary component includes a sealing box fixed on the turntable, a sealing piston slidably connected in the sealing box, an air inlet pipe fixed and connected to the side wall of the sealing box, and a hose fixed and connected to the side wall of the sealing box. The air inlet pipe is provided with a one-way valve to control air entering the sealing box from the outside. The end of the hose away from the sealing box is fixed and connected to the limiting block. The hose communicates with the cavity, and the hose is provided with a one-way valve to control air being discharged from the sealing box to the cavity. The auxiliary mechanism also includes a reciprocating component for driving the sealing piston to reciprocate.

[0019] By adopting the above technical solution, after the preform cools down and moves to one of the operating through holes, the reciprocating assembly drives the sealing piston to move towards the axis of the turntable, which increases the pressure in the sealing box. The air in the sealing box is discharged into the cavity through the hose and finally discharged from the cavity. The gas acts on the preform and causes it to fall off the two limiting posts. There is no need to manually remove the preform from the limiting posts, which facilitates the use of the device.

[0020] Furthermore, the reciprocating assembly includes a reciprocating spring fixed between the sealing piston and the inner wall of the sealing box, and a slide rod fixed on the sealing piston. The slide rod passes through the sealing box and is slidably connected. The reciprocating assembly also includes a movable ball mounted movably on the end of the slide rod away from the sealing box, and a fixing block fixed on the inner wall of the outer shell and located above one of the operating through holes. The distance between the side wall of the fixing block near the turntable axis and the turntable axis gradually increases from the middle of the fixing block to both sides.

[0021] By adopting the above technical solution, during the rotation of the turntable, the sealing box connected to the turntable, the slide rod connected to the sealing box, and the movable ball connected to the slide rod all rotate. The movable ball contacts the side wall of the fixed block. The movable ball first moves from one side of the fixed block to the middle position of the fixed block. Since the distance between the side wall of the fixed block near the turntable axis and the turntable axis gradually increases from the middle to both sides of the fixed block, the movable ball is first forced to move towards the axis closer to the turntable, causing the slide rod connected to the movable ball and the sealing piston connected to the slide rod to move and compress the air in the sealing box. The reciprocating spring is gradually stretched. Finally, the movable ball moves from the middle of the fixed block to the other side of the fixed block. The reciprocating spring gradually contracts and returns to its original position, causing the sealing piston connected to the reciprocating spring, the slide rod connected to the sealing piston, and the movable ball connected to the slide rod to move away from the turntable axis. The outside air is discharged into the sealing box through the air inlet pipe, ensuring the continuous use of the device.

[0022] Furthermore, the rotating assembly includes a rotating motor fixed to the top of the support base, a drive gear fixedly sleeved on the output end of the rotating motor, and a driven gear fixedly sleeved on the rotating column and meshing with the drive gear. A receiving box is provided on the top of the support base, and the receiving box is located below the fixed block.

[0023] By adopting the above technical solution, the rotating motor drives the driving gear to rotate, causing the driven gear meshing with the driving gear and the rotating column connected to the driven gear to rotate, thereby achieving the purpose of rotating the turntable. Bottle preforms that detach from the limiting column will fall into the receiving box for easy collection.

[0024] In summary, the present invention has the following beneficial effects: In this application, by setting a displacement mechanism, the stability of the preform during cooling is improved, and the probability of the preform body falling off the limiting column is reduced, thereby ensuring the normal cooling operation of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 yes Figure 1 Another perspective is used to highlight the connection structure between the mounting bracket and the arc block;

[0027] Figure 3 This is a schematic diagram illustrating the internal structure of the outer shell in an embodiment of this utility model;

[0028] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the push rod and the connecting block;

[0029] Figure 5This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the sliding block and the sliding through hole;

[0030] Figure 6 yes Figure 2 Enlarged diagram of point A in the middle.

[0031] In the diagram: 1. Support base; 2. Rotating column; 3. Turntable; 4. Rotating block; 5. Limiting column; 6. Displacement mechanism; 61. Displacement assembly; 611. Push rod; 612. Connecting block; 613. Limiting block; 614. Support spring; 615. Universal ball bearing; 62. Reset assembly; 621. Sliding block; 622. Reset spring; 623. Limiting rod; 63. Lifting assembly; 631. Mounting bracket; 632. Arc block; 7. Rotating assembly; 71. Rotating motor; 72. Driving gear; 73. Driven gear; 8. 81. Cooling component; 82. Air cooler; 83. Exhaust pipe; 9. Heat dissipation box; 94. Rotating component; 95. Outer shell; 96. Internal gear ring; 97. Rotating gear; 98. Operating through hole; 19. Sliding through hole; 10. Material receiving box; 11. Auxiliary mechanism; 121. Auxiliary component; 1211. Sealing box; 1212. Sealing piston; 1213. Air inlet pipe; 1214. Hose; 122. Reciprocating component; 1221. Reciprocating spring; 1222. Slide rod; 1223. Moving ball; 1224. Fixed block. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] like Figure 1-6As shown in the embodiment of this application, a cooling device for processing plastic bottles is disclosed, including a support base 1, a displacement mechanism 6, a rotating assembly 9, a cooling assembly 8, an auxiliary mechanism 12, and a rotating assembly 7. A rotating column 2 is rotatably mounted on the top of the support base 1. A turntable 3 coaxially arranged with the rotating column 2 is fixed on the top of the rotating column 2. A plurality of rotating blocks 4 are provided through the top of the turntable 3, and two limiting posts 5 are slidably arranged at the bottom of each rotating block 4. A sliding through hole 10 is provided through the rotating block 4. First, the preform is placed on two limiting posts 5. The displacement mechanism 6 moves the two sets of limiting posts 5 away from each other and presses the preform together. Then, the rotating component 7 drives the rotating post 2 to rotate, causing the turntable 3 connected to the rotating post 2, the rotating block 4 connected to the turntable 3, and the limiting posts 5 connected to the rotating block 4 to all rotate. During this process, the rotating component 9 drives the rotating block 4 to rotate while the cooling component 8 cools the preform, improving the stability of the preform during the cooling process and reducing the probability of the preform body falling off the limiting posts 5, thereby ensuring the normal cooling operation of the device.

[0034] A displacement mechanism 6 is mounted on both the rotating block 4 and the support base 1. The displacement mechanism 6 drives the two limiting posts 5 to move closer or further apart. The displacement mechanism 6 includes a displacement assembly 61, a reset assembly 62, and a lifting assembly 63. The displacement assembly 61 includes a push rod 611, a connecting block 612, a limiting block 613, a support spring 614, and a universal ball bearing 615. The number of displacement assemblies 61 is equal to the number of rotating blocks 4, and their positions correspond one-to-one. The push rod 611 passes through the top of the rotating block 4 and slides within it. Inclined surfaces are provided at the junction of the bottom of the push rod 611 and the side walls on both sides of the push rod 611. A cavity extending into the limiting block 613 is provided inside the push rod 611, and an exhaust hole communicating with the cavity is provided at the bottom of the push rod 611. The distance between the two sets of inclined surfaces gradually decreases from top to bottom, and both sets of inclined surfaces abut against the connecting block 612 on the same side. Connecting blocks 612 are fixed to the side wall of the limiting post 5 near the push rod 611. The number of connecting blocks 612 is equal to the number of limiting posts 5, and their positions correspond one-to-one. The distance between the side walls of two connecting blocks 612 that are close to each other gradually decreases from top to bottom. The limiting block 613 is fixed to the top of the push rod 611. The support spring 614 is fixed between the top of the limiting block 613 and the rotating block 4 and is sleeved on the push rod 611. The universal ball bearing 615 is movably installed on the top of the limiting block 613. The lifting assembly 63 drives the push rod 611 to descend, causing the support spring 614 to gradually contract. Since the bottom of the push rod 611 and the junction of its side walls are both provided with inclined surfaces, the distance between the two sets of inclined surfaces gradually decreases from top to bottom. Both sets of inclined surfaces abut against the connecting blocks 612 on the same side. The number of connecting blocks 612 is equal to the number of limiting posts 5, and their positions correspond one-to-one. The distance between the side walls of the two connecting blocks 612 that are close to each other gradually decreases from top to bottom, causing the two connecting blocks 612 and the two limiting posts 5 to move away from each other, thereby achieving the purpose of clamping the preform. Similarly, the lifting assembly 63 drives the push rod 611 to rise, and the reset assembly 62 drives the two blocks to move closer together and reset, thereby achieving the purpose of releasing the preform.

[0035] The reset assembly 62 is used to drive the two limiting posts 5 to move closer to each other when the push rod 611 rises. The number of reset assemblies 62 is equal to the number of limiting posts 5, and their positions correspond one-to-one. The number of sliding through holes 10 is equal to the number of reset assemblies 62, and their positions correspond one-to-one. The reset assembly 62 includes a sliding block 621, a reset spring 622, and a limiting rod 623. The sliding block 621 is slidably disposed in the sliding through hole 10 and fixed to the limiting post 5. The reset spring 622 is fixed between the sliding block 621 and the sliding through hole 10, and the reset spring 622 is sleeved on the limiting rod 623. The limiting rod 623 is disposed through the sliding block 621 and slidably engaged, and the limiting rod 623 is fixed in the sliding through hole 10. As the two limiting posts 5 move away from each other, the sliding blocks 621 connected to the two limiting posts 5 move away from each other. The two sets of return springs 622 are gradually compressed. As the push rod 611 rises, the return springs 622 gradually extend and return to their original positions. This causes the sliding blocks 621 connected to the return springs 622 and the limiting posts 5 connected to the sliding blocks 621 to move closer to the push rod 611, thus ensuring the clamping or releasing of the preform.

[0036] A rotating assembly 9 is mounted on both the support base 1 and the turntable 3. The rotating assembly 9 drives multiple rotating blocks 4 to rotate. The rotating assembly 9 includes a housing 91, an internal gear ring 92, and rotating gears 93. The housing 91 is fixedly fitted onto the support base 1. Two sets of symmetrically arranged operating through holes 94 about the axis of the housing 91 are provided through the side wall of the housing 91. The internal gear ring 92 is fixed to the inner side wall of the housing 91 and coaxially arranged with the turntable 3. The rotating gears 93 are fixedly fitted onto the rotating blocks 4 and mesh with the internal gear ring 92. The number of rotating gears 93 is equal to the number of rotating blocks 4, and their positions correspond one-to-one. During the rotation of the turntable 3, both the rotating blocks 4 connected to the turntable 3 and the rotating gears 93 connected to the rotating blocks 4 rotate. Since the rotating gears 93 mesh with the internal gear ring 92, the rotating blocks 4 connected to the rotating gears 93 rotate, thus achieving the purpose of rotating the preform.

[0037] The lifting assembly 63 is used to drive the push rod 611 to rise and fall. The lifting assembly 63 includes a mounting bracket 631 and an arc block 632. The mounting bracket 631 is fixed to the housing 91, and the arc block 632 is fixed to the mounting bracket 631. The distance between the side walls at both ends of the arc block 632 gradually decreases from top to bottom, and the distance between the top of the universal ball bearing 615 and the top of the turntable 3 is greater than the distance between the bottom of the arc block 632 and the top of the turntable 3. During the rotation of turntable 3, the rotating block 4 connected to turntable 3, the push rod 611 connected to rotating block 4, the limiting block 613 connected to push rod 611, and the universal ball bearing 615 connected to limiting block 613 all move. In this process, the universal ball bearing 615 first contacts the bottom of the arc block 632, and is squeezed downwards, causing the push rod 611 to descend and the support spring 614 to contract. Finally, the universal ball bearing 615 separates from the arc block 632, the support spring 614 extends, and the push rod 611 rises, thus achieving the purpose of clamping or releasing the preform using the two sets of limiting posts 5. Since the distance between the side walls at both ends of the arc block 632 gradually decreases from top to bottom, it facilitates the movement of the universal ball bearing 615 to the bottom of the arc block 632.

[0038] A cooling assembly 8 is mounted on a support base 1 and is used to cool the plastic bottle. The cooling assembly 8 includes a cooler 81, an exhaust pipe 82, and a heat dissipation box 83. The cooler 81 is fixed to a mounting bracket 631, and the exhaust pipe 82 is fixed and connected to the outlet end of the cooler 81. The end of the exhaust pipe 82 furthest from the cooler 81 is fixed and connected to the heat dissipation box 83. The heat dissipation box 83 is mounted through and fixed to the outer casing 91, and multiple ventilation holes are provided through the side wall of the heat dissipation box 83 near the support base 1. After the cooler 81 operates, it draws in external air through its inlet end and cools the air. Then, the cold air is discharged from the outlet end of the cooler 81 to the exhaust pipe 82, then from the exhaust pipe 82 into the heat dissipation box 83, and finally discharged through the ventilation holes, thus cooling the bottle preform.

[0039] Auxiliary mechanism 12 is mounted on turntable 3 and includes auxiliary component 121 and reciprocating component 122. Auxiliary component 121 includes a sealing box 1211, a sealing piston 1212, an air inlet pipe 1213, and a hose 1214. The sealing box 1211 is fixed to turntable 3, and the sealing piston 1212 is slidably connected inside the sealing box 1211. The air inlet pipe 1213 is fixed and connected to the side wall of the sealing box 1211, and a one-way valve is provided on the air inlet pipe 1213 to control the air entering the sealing box 1211 from the outside. The hose 1214 is fixed and connected to the side wall of the sealing box 1211, and one end of the hose 1214 away from the sealing box 1211 is fixed and connected to the limiting block 613. The hose 1214 communicates with a cavity, and a one-way valve is provided on the hose 1214 to control the air discharged from the sealing box 1211 into the cavity. By adopting the above technical solution, after the preform cools down and moves to the position of one of the operating through holes 94, the reciprocating assembly 122 drives the sealing piston 1212 to move towards the axis of the turntable 3, which increases the pressure in the sealing box 1211. The air in the sealing box 1211 will be discharged into the cavity through the hose 1214 and finally discharged from the cavity. The gas will act on the preform and cause the preform to fall off the two limiting posts 5. There is no need to manually remove the preform from the limiting posts 5, which facilitates the use of the device.

[0040] The reciprocating assembly 122 drives the sealing piston 1212 to reciprocate. The reciprocating assembly 122 includes a reciprocating spring 1221, a slide rod 1222, a movable ball 1223, and a fixed block 1224. The reciprocating spring 1221 is fixed between the sealing piston 1212 and the inner wall of the sealing housing 1211, and the slide rod 1222 is fixed on the sealing piston 1212. The slide rod 1222 passes through the sealing housing 1211 and is slidably connected. The movable ball 1223 is movably mounted on the end of the slide rod 1222 away from the sealing housing 1211. The fixed block 1224 is fixed on the inner wall of the housing 91 and located above one of the operating through holes 94. The distance between the side wall of the fixed block 1224 near the axis of the turntable 3 and the axis of the turntable 3 gradually increases from the middle of the fixed block 1224 to both sides. During the rotation of turntable 3, the sealing box 1211 connected to turntable 3, the slide rod 1222 connected to sealing box 1211, and the movable ball 1223 connected to slide rod 1222 all rotate. The movable ball 1223 will contact the side wall of fixed block 1224. The movable ball 1223 will first move from one side of fixed block 1224 to the middle position of fixed block 1224. Since the distance between the side wall of fixed block 1224 near the axis of turntable 3 and the axis of turntable 3 gradually increases from the middle to both sides of fixed block 1224, the movable ball 1223 is first subjected to force and moves towards the axis of turntable 3, causing the slide rod connected to movable ball 1223 to rotate. Both 1222 and the sealing piston 1212 connected to the slide rod 1222 move and compress the air in the sealing box 1211, and the reciprocating spring 1221 is gradually stretched. Finally, the movable ball 1223 moves from the middle of the fixed block 1224 to the other side of the fixed block 1224. The reciprocating spring 1221 gradually contracts and returns to its original position, so that the sealing piston 1212 connected to the reciprocating spring 1221, the slide rod 1222 connected to the sealing piston 1212, and the movable ball 1223 connected to the slide rod 1222 all move in a direction away from the axis of the turntable 3. The outside air will be discharged into the sealing box 1211 through the air inlet pipe 1213 to ensure the continuous use of the device.

[0041] A rotating assembly 7 is mounted on the support base 1 and is used to drive the rotating column 2 to rotate. The rotating assembly 7 includes a rotating motor 71, a driving gear 72, and a driven gear 73. The rotating motor 71 is fixed to the top of the support base 1. The driving gear 72 is fixedly sleeved on the output end of the rotating motor 71, and the driven gear 73 is fixedly sleeved on the rotating column 2 and meshes with the driving gear 72. A receiving box 11 is provided on the top of the support base 1, and the receiving box 11 is located below the fixing block 1224.

[0042] By adopting the above technical solution, after the rotating motor 71 starts working, it drives the driving gear 72 to rotate, causing the driven gear 73 meshing with the driving gear 72 and the rotating column 2 connected to the driven gear 73 to rotate, thereby achieving the purpose of rotating the turntable 3. The preforms that fall off the limiting column 5 will fall into the receiving box 11, which facilitates the collection of the preforms.

[0043] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cooling device for processing plastic bottles, comprising a support base (1) and a rotating column (2) rotatably mounted on the top of the support base (1), wherein the support base (1) is provided with a rotating assembly (7) for driving the rotating column (2) to rotate, and the support base (1) is provided with a cooling assembly (8) for cooling the plastic bottle, characterized in that: The top of the rotating column (2) is fixed with a turntable (3) coaxially arranged with the rotating column (2). Multiple rotating blocks (4) are provided through the top of the turntable (3). Two limiting posts (5) are slidably arranged at the bottom of each rotating block (4). A rotating assembly (9) for driving the multiple rotating blocks (4) to rotate is provided on the turntable (3) and the support base (1). A displacement mechanism (6) for driving the two limiting posts (5) to move closer or further away from each other is provided on the rotating block (4) and the support base (1).

2. The cooling device for processing plastic bottles according to claim 1, characterized in that: The displacement mechanism (6) includes a displacement assembly (61), which includes a push rod (611) that passes through the top of the rotating block (4) and slides in cooperation with it, and a connecting block (612) fixed to the side wall of the limiting post (5) near the push rod (611). The bottom of the push rod (611) and the junction of the side walls on both sides of the push rod (611) are provided with inclined surfaces. The distance between the two sets of inclined surfaces gradually decreases from top to bottom. Both sets of inclined surfaces abut against the connecting block (612) on the same side. The number of connecting blocks (612) is equal to the number of limiting posts (5), and their positions correspond one-to-one. The distance between the side walls of the two connecting blocks (612) that are close to each other gradually decreases from top to bottom. The component (61) also includes a limiting block (613) fixed to the top of the push rod (611), a support spring (614) fixed between the top of the limiting block (613) and the rotating block (4) and sleeved on the push rod (611), and a universal ball bearing (615) movably installed on the top of the limiting block (613). The number of the displacement components (61) is equal to the number of rotating blocks (4) and their positions correspond one-to-one. The displacement mechanism (6) also includes a reset component (62) for driving the two limiting posts (5) to move closer to each other when the push rod (611) rises, and a lifting component (63) for driving the push rod (611) to rise and fall. The number of the reset components (62) is equal to the number of limiting posts (5) and their positions correspond one-to-one.

3. The cooling device for processing plastic bottles according to claim 2, characterized in that: The rotating block (4) is provided with a sliding through hole (10). The number of sliding through holes (10) is equal to the number of sets of reset components (62) and their positions correspond one-to-one. The reset component (62) includes a sliding block (621) that is slidably disposed in the sliding through hole (10) and fixed to the limiting post (5), a reset spring (622) fixed between the sliding block (621) and the sliding through hole (10), and a limiting rod (623) that is provided through the sliding block (621) and slidably engaged. The limiting rod (623) is fixed in the sliding through hole (10), and the reset spring (622) is sleeved on the limiting rod (623).

4. The cooling device for processing plastic bottles according to claim 3, characterized in that: The rotating assembly (9) includes a housing (91) fixedly sleeved on the support base (1), an internal gear ring (92) fixed on the inner side wall of the housing (91) and coaxially arranged with the turntable (3), and a rotating gear (93) fixedly sleeved on the rotating block (4) and meshing with the internal gear ring (92). The number of rotating gears (93) is equal to the number of rotating blocks (4) and their positions correspond one-to-one. Two sets of operation through holes (94) are symmetrically arranged about the axis of the housing (91) on the side wall of the housing (91).

5. A cooling device for processing plastic bottles according to claim 4, characterized in that: The lifting assembly (63) includes a mounting bracket (631) fixed on the outer shell (91) and an arc block (632) fixed on the mounting bracket (631). The distance between the side walls at both ends of the arc block (632) gradually decreases from top to bottom. The distance between the top of the universal ball (615) and the top of the turntable (3) is greater than the distance between the bottom of the arc block (632) and the top of the turntable (3).

6. A cooling device for processing plastic bottles according to claim 5, characterized in that: The cooling component (8) includes a cooler (81) fixed on the mounting bracket (631), an exhaust pipe (82) fixed and connected to the air outlet of the cooler (81), and a heat dissipation box (83) that is installed through the outer shell (91) and fixed. The end of the exhaust pipe (82) away from the cooler (81) is fixed and connected to the heat dissipation box (83). The side wall of the heat dissipation box (83) near the support base (1) is provided with multiple ventilation holes.

7. A cooling device for processing plastic bottles according to claim 2, characterized in that: The push rod (611) has a cavity extending into the limiting block (613). The bottom of the push rod (611) has an exhaust hole communicating with the cavity. The turntable (3) is provided with an auxiliary mechanism (12). The auxiliary mechanism (12) includes an auxiliary component (121). The auxiliary component (121) includes a sealing box (1211) fixed on the turntable (3), a sealing piston (1212) slidably connected to the sealing box (1211), an air inlet pipe (1213) fixed and connected to the side wall of the sealing box (1211), and an air inlet pipe (1213) fixed and connected to the sealing box (1211). The hose (1214) on the side wall of the box (1211) is provided with a one-way valve on the air inlet pipe (1213) to control the air from the outside to enter the sealed box (1211). The end of the hose (1214) away from the sealed box (1211) is fixed and connected to the limiting block (613). The hose (1214) is connected to the cavity. The hose (1214) is provided with a one-way valve to control the air from the sealed box (1211) to the cavity. The auxiliary mechanism (12) also includes a reciprocating assembly (122) for driving the sealing piston (1212) to reciprocate.

8. A cooling device for processing plastic bottles according to claim 7, characterized in that: The reciprocating assembly (122) includes a reciprocating spring (1221) fixed between the sealing piston (1212) and the inner wall of the sealing box (1211) and a slide rod (1222) fixed on the sealing piston (1212). The slide rod (1222) passes through the sealing box (1211) and is slidably connected. The reciprocating assembly (122) also includes a movable ball (1223) movably installed on the end of the slide rod (1222) away from the sealing box (1211) and a fixing block (1224) fixed on the inner wall of the outer shell (91) and located above one of the operating through holes (94). The distance between the side wall of the fixing block (1224) near the axis of the turntable (3) and the axis of the turntable (3) gradually increases from the middle to both sides of the fixing block (1224).

9. A cooling device for processing plastic bottles according to claim 8, characterized in that: The rotating assembly (7) includes a rotating motor (71) fixed to the top of the support base (1), a drive gear (72) fixedly sleeved on the output end of the rotating motor (71), and a driven gear (73) fixedly sleeved on the rotating column (2) and meshing with the drive gear (72). A receiving box (11) is provided on the top of the support base (1), and the receiving box (11) is located below the fixing block (1224).

Images