A cooling device in a cap production system

Abstract

The application belongs to the technical field of injection molding equipment, and particularly relates to a cooling device in a plastic cover production system, which comprises a workbench, two support plates are fixedly connected above the workbench, a ball screw is rotationally connected between the two support plates, the screw directions of the threads on the two sides of the ball screw are opposite, a moving block is threadedly connected at the threads on the two sides of the ball screw, and the top portions of the two moving blocks are fixedly connected with a first moving plate and a second moving plate respectively; a placing mechanism for placing plastic covers is fixedly connected to the first moving plate, and a turnover mechanism for overturning plastic covers is fixedly connected to the second moving plate. The placing mechanism is arranged, when the plastic covers are cooled, the plastic covers above the placing plate are inverted and placed on the conical fixing blocks in the shaking process of the placing plate, so that the plastic covers are arranged, a certain gap is kept between the plastic covers, and the cooling effect of the plastic covers is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of injection molding equipment, and in particular relates to a cooling device in a plastic cap production system. Background Technology

[0002] Plastic bottle caps, due to their low material cost and combination of advantages from many other materials, are welcomed by packaging container material manufacturers and are increasingly widely used in the food packaging industry. The production process of plastic bottle caps involves compression molding or injection molding, followed by cooling after processing.

[0003] However, the cooling devices in existing plastic cap production systems often have the following technical problems when cooling the plastic caps:

[0004] 1. When cooling plastic caps, they often pile up in one place and cannot be effectively organized, resulting in poor cooling effect at the piled-up area;

[0005] 2. During the cooling process of the plastic cap, it is impossible to flip the plastic cap, which means that the bottom of the plastic cap cannot directly contact the cooling air, thus failing to achieve comprehensive cooling.

[0006] 3. After the plastic caps have cooled down, staff often need to manually pick them up and put them away, which is cumbersome and increases labor costs. Summary of the Invention

[0007] The purpose of this invention is to address the problems mentioned in the background art by providing a cooling device in a plastic cap production system that can sort plastic caps and flip them over to improve the cooling effect of the plastic caps.

[0008] To achieve the above objectives, the present invention adopts the following technical solutions:

[0009] A cooling device in a plastic cap production system, comprising:

[0010] The workbench has two support plates fixedly connected to its top. A ball screw is rotatably connected between the two support plates. The spiral directions of the threads on both sides of the ball screw are opposite. Moving blocks are threaded to the threads on both sides of the ball screw. A first moving plate and a second moving plate are fixedly connected to the top of the two moving blocks, respectively.

[0011] A placement mechanism for placing plastic caps is fixedly connected to the first movable plate, a flipping mechanism for flipping plastic caps is fixedly connected to the second movable plate, and a storage mechanism for storing plastic caps is fixedly connected above the workbench.

[0012] Preferably, the placement mechanism includes a placement plate, two first springs, several conical fixing blocks, and a shaking mechanism. The placement plate is elastically connected to a first movable plate via the two first springs. Several conical fixing blocks are fixedly connected to the top of the placement plate, and a shaking mechanism for inverting the plastic cap onto the conical fixing blocks is rotatably connected to the bottom of the placement plate.

[0013] Preferably, the shaking mechanism includes a guide wheel and a guide plate. The guide wheel is rotatably connected to the lower wall of the placement plate, and the guide plate is fixedly connected to the worktable. The guide wheel always moves along the guide plate.

[0014] Preferably, the flipping mechanism includes two fixed plates, two sliding sleeves, a swing plate, two first gears, two rotating rods, two motors, two first arc-shaped racks, two second arc-shaped racks, two transmission rods, two second gears, two first racks, two second racks, two third racks, and two connecting rods. Both fixed plates are fixedly connected to a second movable plate. Sliding sleeves are slidably fitted onto both fixed plates. A swing plate is rotatably connected between the two sliding sleeves. First gears are interference-fitted to both ends of the swing plate's axis. Rotating rods are rotatably connected to the sidewalls of both sliding sleeves away from the swing plate. A connecting rod is fixedly connected to the sidewalls of both sliding sleeves away from the rotating rods. The motors have two output shafts that are fixedly connected to two rotating rods. Each of the two rotating rods has a first arc-shaped rack fixedly connected to it. The two first arc-shaped racks mesh with two first gears respectively. Each of the two rotating rods has a second arc-shaped rack fixedly connected to it. Each of the two sliding sleeves located below the rotating rods has a transmission rod rotatably connected to it. Each of the two transmission rods has a second gear with an interference fit. The two second gears have a first rack and a second rack meshing with each other on their sides respectively. Each of the two first racks has a third rack fixedly connected to its top. The two third racks mesh with the two second arc-shaped racks respectively. Each of the two second racks is fixedly connected to a fixed plate via a connecting rod.

[0015] Preferably, the storage mechanism includes a guide rail, a lifting plate, a rotating shaft, a rotating disk, several limiting frames, rollers, two third gears, two fourth racks, four transmission wheels, and two transmission belts. The guide rail is fixedly connected to the upper wall of the workbench. The lifting plate is slidably connected through the swing plate. The portion of the lifting plate extending above the swing plate is rotatably connected to the rotating shaft. The rotating disk is fixedly connected to the rotating shaft. Several limiting frames are fixedly connected to the rotating disk. Rollers are rotatably connected to the bottom of the lifting plate. Third gears are rotatably connected to both sides of the bottom of the lifting plate. Fourth racks are fixedly connected to both sides of the guide rail. The two third gears mesh with the two fourth racks respectively. Transmission wheels are interference-fitted at both ends of the rotating shaft and on the shafts of the two third gears. A transmission belt is sleeved between the two transmission wheels on the same side of the four transmission wheels.

[0016] Preferably, a locking post is fixedly connected above the rotating disk, and two sides of the locking post are elastically connected to a locking block by a second spring. The placement plate is provided with a locking groove that cooperates with the locking post, and the inner wall of the locking groove is provided with a locking slot that cooperates with the locking block.

[0017] Preferably, a push rod is slidably connected inside the locking column, the bottom of the push rod extends to the bottom of the swing plate, a pressing block is fixedly connected to the top of the push rod, and a pressing wheel is fixedly connected to the bottom of the locking block.

[0018] Preferably, a storage frame is fixedly connected to the side wall of the workbench near the second movable plate, and an inclined guide plate is fixedly connected to the top of the workbench.

[0019] Compared with existing technologies, the cooling device in this plastic cap production system has the following advantages:

[0020] 1. By setting up a placement mechanism, when the plastic cap is cooling, the plastic cap above the placement plate can be turned upside down onto several conical fixing blocks during the shaking process, thereby achieving the effect of tidying up the plastic cap, maintaining a certain gap between the plastic caps, and improving the cooling effect of the plastic cap.

[0021] 2. This invention, through the setting of a flipping mechanism, after the plastic cap has cooled down by being inverted, drives a rotating rod to rotate via a motor. This rotation, in turn, drives a first gear via a first arc-shaped rack, causing the swing plate to rotate to be horizontal with the placement plate. The subsequent rotation of the rotating rod drives a third rack via a second arc-shaped rack, causing the third rack to move the first rack upwards. This, in turn, drives the second rack downwards via a second gear, causing the swing plate to move downwards while remaining horizontal with the placement plate. This allows the plastic cap to enter the limiting frame. At this time, the reverse rotation of the motor can drive the placement plate to flip along with the swing plate, completing a 180° flip of the plastic cap. After the placement plate separates from the swing plate, the other side of the plastic cap can be cooled, achieving comprehensive cooling of both sides of the plastic cap and improving the cooling effect of the bottom of the plastic cap.

[0022] 3. This invention, through the setting of a storage mechanism, allows the first and second moving plates to move away from each other after the plastic cap has cooled down. During this process, the lifting plate is moved upward through the guide rail and rollers. After moving to a certain height, the rotating disk is rotated by the third gear and the fourth rack, lifting and tilting the cooled plastic cap on the swing plate so that it can be stored in the storage box. This eliminates the need for staff to manually pick up and store the plastic cap, reducing labor costs.

[0023] 4. By setting a locking pin and a locking groove, after the swing plate rotates to be horizontal with the placement plate, the downward movement of the swing plate will cause the locking pin to enter the locking groove, thereby automatically locking the placement plate with the swing plate. As the swing plate drives the plastic cover to flip, the placement plate flips synchronously. The plastic cover is limited by the conical fixing block and the limiting frame to prevent the plastic cover from falling off during the flipping process, thus improving the working efficiency and cooling effect of the plastic cover cooling.

[0024] 5. By setting up an extrusion block and an extrusion wheel, the present invention allows the placement plate to be unlocked from the swing plate simply by pushing the push rod after the plastic cap has been flipped. This allows the placement plate to return to its initial position under the elastic force of the first spring, which facilitates the unlocking of the swing plate and the placement plate and makes the flipping of the plastic cap more convenient and faster. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the cooling device in the plastic cap production system provided by the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the workbench above the cooling device in the plastic cap production system provided by the present invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the cooling device above the workbench in the plastic cap production system provided by the present invention from another angle.

[0028] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0030] Figure 6 yes Figure 3 Enlarged view of point C in the middle;

[0031] Figure 7 yes Figure 3 Enlarged view of point D in the middle;

[0032] Figure 8 This is a cross-sectional view of the locking column in the cooling device of the plastic cap production system provided by the present invention;

[0033] Figure 9 yes Figure 8 Enlarged view at point E in the middle;

[0034] Figure 10 This is a top view of the plate placement area in the cooling device of the plastic cap production system provided by the present invention.

[0035] In the diagram, 1. Workbench; 11. Support plate; 12. Ball screw; 13. Moving block; 14. First moving plate; 15. Second moving plate; 2. Placement mechanism; 21. Placement plate; 22. First spring; 23. Conical fixing block; 24. Vibration mechanism; 241. Guide wheel; 242. Guide plate; 3. Tilting mechanism; 31. Fixing plate; 32. Sliding sleeve; 33. Swing plate; 34. First gear; 35. Rotating rod; 36. Motor; 37. First arc-shaped rack; 38. Second arc-shaped rack; 39. Transmission. 310. Rod; 311. Second gear; 312. First rack; 313. Second rack; 314. Third rack; 315. Connecting rod; 4. Storage mechanism; 41. Guide rail; 42. Lifting plate; 43. Rotating shaft; 44. Rotating disk; 45. Limiting frame; 46. Roller; 47. Third gear; 48. Fourth rack; 49. Transmission wheel; 410. Transmission belt; 5. Locking pin; 51. Locking block; 52. Locking groove; 53. Locking groove; 54. Second spring; 6. Push rod; 61. Extrusion block; 62. Extrusion wheel. Detailed Implementation

[0036] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] like Figures 1-10 As shown, a cooling device in a plastic cap production system includes:

[0038] Workbench 1, with two support plates 11 fixedly connected above the workbench 1. A ball screw 12 is rotatably connected between the two support plates 11. The spiral directions of the threads on both sides of the ball screw 12 are opposite. Moving blocks 13 are threadedly connected to the threads on both sides of the ball screw 12. A first moving plate 14 and a second moving plate 15 are fixedly connected to the top of the two moving blocks 13 respectively.

[0039] The workbench 1 is equipped with a cooling mechanism above it, which can blow cooling air onto the workbench 1 to cool the plastic cap.

[0040] A placement mechanism 2 for placing plastic caps is fixedly connected to the first movable plate 14, a flipping mechanism 3 for flipping plastic caps is fixedly connected to the second movable plate 15, and a storage mechanism 4 for storing plastic caps is fixedly connected above the workbench 1.

[0041] The placement mechanism 2 includes a placement plate 21, two first springs 22, several conical fixing blocks 23, and a shaking mechanism 24. The placement plate 21 is elastically connected to the first moving plate 14 through the two first springs 22. Several conical fixing blocks 23 are fixedly connected to the top of the placement plate 21, and the bottom of the placement plate 21 is rotatably connected to a shaking mechanism 24 for inverting the plastic cap onto the conical fixing blocks 23.

[0042] The shaking mechanism 24 includes a guide wheel 241 and a guide plate 242. The guide wheel 241 is rotatably connected to the lower wall of the placement plate 21, and the guide plate 242 is fixedly connected to the worktable 1. The guide wheel 241 always moves along the guide plate 242.

[0043] To address the problem in existing technologies where plastic caps cannot be properly organized during cooling, resulting in poor cooling at the accumulation points, this invention provides a placement mechanism 2. During cooling, the plastic caps are conveyed to a placement plate 21. Subsequently, the movement of the first moving plate 14 and the placement plate 21 causes the guide wheel 241 at the bottom of the placement plate 21 to move. Further, under the action of the guide plate 242, the placement plate 21 undergoes reciprocating vertical displacement, causing it to vibrate. During this vibration, the plastic caps above the placement plate 21 are inverted and pressed against several conical fixing blocks 23, thus organizing the plastic caps, maintaining a certain gap between them, and improving the cooling effect.

[0044] The flipping mechanism 3 includes two fixed plates 31, two sliding sleeves 32, a swing plate 33, two first gears 34, two rotating rods 35, two motors 36, two first arc-shaped racks 37, two second arc-shaped racks 38, two transmission rods 39, two second gears 310, two first racks 311, two second racks 312, two third racks 313, and two connecting rods 314. Both fixed plates 31 are fixedly connected to the second moving plate 15. Sliding sleeves 32 are slidably fitted onto both fixed plates 31. A swing plate 33 is rotatably connected between the two sliding sleeves 32. First gears 34 are interference-fitted to both ends of the swing plate 33's axis. Rotating rods 35 are rotatably connected to the sidewalls of both sliding sleeves 32 away from the swing plate 33. A fixed connecting rod 35 is also fixed to the sidewalls of both sliding sleeves 32 away from the rotating rods 35. Two motors 36 are connected to the output shafts of the two motors 36, which are fixedly connected to two rotating rods 35 respectively. A first arc-shaped rack 37 is fixedly connected to each of the two rotating rods 35. The two first arc-shaped racks 37 mesh with the two first gears 34 respectively. A second arc-shaped rack 38 is fixedly connected to each of the two rotating rods 35. A transmission rod 39 is rotatably connected to each of the two sliding sleeves 32 located below the rotating rods 35. A second gear 310 is interference-fitted to each of the two transmission rods 39. A first rack 311 and a second rack 312 mesh with each other on both sides of the two second gears 310 respectively. A third rack 313 is fixedly connected to the top of each of the two first racks 311. The two third racks 313 mesh with the two second arc-shaped racks 38 respectively. The two second racks 312 are fixedly connected to the fixed plate 31 through the connecting rod 314.

[0045] To address the problem in existing technologies where the plastic cap cannot be flipped, preventing the bottom of the cap from directly contacting the cooling air and thus hindering comprehensive cooling, this invention provides a flipping mechanism 3. After the plastic cap has cooled upside down, a motor 36 drives a rotating rod 35 to rotate, which in turn drives a first arc-shaped rack 37 to rotate a first gear 34, causing the swing plate 33 to rotate until it is level with the placement plate 21. Subsequent rotation of the rotating rod 35 drives a second arc-shaped rack 38 to rotate a third rack 313, causing the third rack 313 to move the first rack 311 upwards, which in turn moves the second gear 31... The second rack 312 moves downward, and the downward movement of the second rack 312 will drive the fixed plate 31 to move downward relative to the sliding sleeve 32 through the connecting rod 314, so that the swing plate 33 moves downward while maintaining a horizontal position with the placement plate 21, thereby allowing the plastic cover to enter the limiting frame 45. At this time, the reverse rotation of the motor 36 can drive the placement plate 21 to follow the swing plate 33 to flip, completing a 180° flip of the plastic cover. After the placement plate 21 separates from the swing plate 33, the other side of the plastic cover can be cooled, completing the comprehensive cooling of the front and back of the plastic cover and improving the cooling effect of the bottom of the plastic cover.

[0046] The storage mechanism 4 includes a guide rail 41, a lifting plate 42, a rotating shaft 43, a rotating disk 44, several limiting frames 45, rollers 46, two third gears 47, two fourth racks 48, four transmission wheels 49, and two transmission belts 410. The guide rail 41 is fixedly connected to the upper wall of the workbench 1. The lifting plate 42 is slidably connected through the swing plate 33. The portion of the lifting plate 42 extending above the swing plate 33 is rotatably connected to the rotating shaft 43. The rotating disk 44 is fixedly connected to the rotating shaft 43. Several limiting frames 45 are fixedly connected. Rollers 46 are rotatably connected to the bottom of the lifting plate 42. Third gears 47 are rotatably connected to both sides of the bottom of the lifting plate 42. Fourth racks 48 are fixedly connected to both sides of the guide rail 41. Two third gears 47 mesh with two fourth racks 48 respectively. Transmission wheels 49 are interference-fitted on both ends of the rotating shaft 43 and the shaft of the two third gears 47. A transmission belt 410 is sleeved between the two transmission wheels 49 on the same side of the four transmission wheels 49.

[0047] A storage frame is fixedly connected to one side wall of the workbench 1 near the second moving plate 15, and an inclined guide plate is fixedly connected above the workbench 1, so that the plastic cap can fall into the storage frame through the inclined guide plate when it is tilted.

[0048] To address the cumbersome process of manually picking up and storing plastic caps after they have cooled, this invention provides a storage mechanism 4. Once the plastic caps have cooled, the ball screw 12 drives the first moving plate 14 and the second moving plate 15 to move away from each other. During this process, the guide rail 41 and rollers 46 drive the lifting plate 42 to move upward. After moving to a certain height, the meshing of the third gear 47 and the fourth rack 48 drives the rotating disk 44 to flip, lifting and tilting the cooled plastic caps on the swing plate 33 so that they can be stored in the storage frame. This eliminates the need for manual picking up and storing of the plastic caps, reducing labor costs.

[0049] In addition, a locking pin 5 is fixedly connected above the rotating disk 44. Both sides of the locking pin 5 are elastically connected to a locking block 51 via a second spring 54. The placement plate 21 has a locking groove 52 that cooperates with the locking pin 5. The inner wall of the locking groove 52 has a locking slot 53 that cooperates with the locking block 51. After the swing plate 33 rotates to be horizontal with the placement plate 21, the downward movement of the swing plate 33 will cause the locking pin 5 to enter the locking groove 52 and squeeze the locking block 51. When the locking block 51 is horizontal with the locking slot 53, the locking block 51 will automatically pop out into the locking slot 53 under the elastic force of the second spring 54, thereby making the placement plate 21 automatically lock with the swing plate 33. During the process of the swing plate 33 driving the plastic cover to flip, the placement plate 21 flips synchronously. The plastic cover is limited by the conical fixing block 23 and the limiting frame 45 to prevent the plastic cover from falling off during the flipping process, thereby improving the working efficiency and cooling effect of the plastic cover cooling.

[0050] In addition, a push rod 6 is slidably connected inside the locking post 5. The bottom of the push rod 6 extends to the bottom of the swing plate 33. A pressing block 61 is fixedly connected to the top of the push rod 6, and a pressing wheel 62 is fixedly connected to the bottom of the locking block 51. After the plastic cover is flipped, simply push the push rod 6 to make the pressing block 61 press the pressing wheel 62, thereby pulling the locking block 51 out of the slot 53, so that the placement plate 21 is unlocked from the swing plate 33. This allows the placement plate 21 to return to its initial position under the elastic force of the first spring 22, which facilitates the unlocking of the swing plate 33 and the placement plate 21, making the flipping of the plastic cover more convenient and faster.

[0051] The functional principle of this invention can be explained through the following operational methods:

[0052] In use, the plastic cap is placed into the placement plate 21. Then, the rotation of the ball screw 12 drives the first moving plate 14 and the second moving plate 15 to move closer to each other. During this process, the guide wheel 241 at the bottom of the placement plate 21 moves. Furthermore, under the action of the guide plate 242, the placement plate 21 performs reciprocating vertical displacement, which causes the placement plate 21 to shake. During the shaking process, the plastic cap on the top of the placement plate 21 is flipped onto several conical fixing blocks 23, which has the effect of tidying up the plastic cap.

[0053] When the first movable plate 14 and the second movable plate 15 are closest to each other, the cooling mechanism blows cooling air onto the placement plate 21 to cool the inverted plastic cover.

[0054] After a cooling period, the motor 36 drives the rotating rod 35 to rotate, which in turn drives the first gear 34 to rotate via the first arc-shaped rack 37, causing the swing plate 33 to rotate to be horizontal with the placement plate 21. The subsequent rotation of the rotating rod 35 will drive the third rack 313 to rotate via the second arc-shaped rack 38, causing the third rack 313 to drive the first rack 311 to move upwards. This, in turn, drives the second rack 312 to move downwards via the second gear 310. The downward movement of the second rack 312 will then drive the fixed plate 3 via the connecting rod 314. 1. The sliding sleeve 32 is displaced downward, so that the swing plate 33 is kept horizontal with the placement plate 21 and moves downward, and the locking pin 5 is delivered into the locking groove 52 to lock the swing plate 33 and the placement plate 21. At this time, the plastic cover enters the limit frame 45, and the drive motor 36 rotates in the opposite direction, which can drive the placement plate 21 to follow the swing plate 33 to flip, completing the 180° flip of the plastic cover. After the placement plate 21 and the swing plate 33 are separated, the other side of the plastic cover can be cooled to improve the cooling effect on the bottom of the plastic cover.

[0055] After the plastic cap has cooled completely, the first moving plate 14 and the second moving plate 15 are moved away from each other again. During this process, the lifting plate 42 will be moved upward by the guide rail 41 and the roller 46. After moving to a certain height, the rotating disk 44 will be rotated by the meshing of the third gear 47 and the fourth rack 48, which will lift and tilt the cooled plastic cap on the swing plate 33 so that it can be stored in the storage box.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cooling device in a plastic cap production system, characterized in that, include: A workbench (1) is provided. Two support plates (11) are fixedly connected above the workbench (1). A ball screw (12) is rotatably connected between the two support plates (11). The spiral directions of the threads on both sides of the ball screw (12) are opposite. Moving blocks (13) are threadedly connected to the threads on both sides of the ball screw (12). A first moving plate (14) and a second moving plate (15) are fixedly connected to the top of the two moving blocks (13) respectively. The first movable plate (14) is fixedly connected to a placement mechanism (2) for placing plastic caps, the second movable plate (15) is fixedly connected to a flipping mechanism (3) for flipping plastic caps, and the workbench (1) is fixedly connected to a storage mechanism (4) for storing plastic caps. The placement mechanism (2) includes a placement plate (21), two first springs (22), several conical fixing blocks (23) and a shaking mechanism (24). The placement plate (21) is elastically connected to the first moving plate (14) by the two first springs (22). Several conical fixing blocks (23) are fixedly connected to the top of the placement plate (21). The bottom of the placement plate (21) is rotatably connected to a shaking mechanism (24) for inverting the plastic cap onto the conical fixing blocks (23). The flipping mechanism (3) includes two fixed plates (31), two sliding sleeves (32), a swing plate (33), two first gears (34), two rotating rods (35), two motors (36), two first arc-shaped racks (37), two second arc-shaped racks (38), two transmission rods (39), two second gears (310), two first racks (311), two second racks (312), two third racks (313), and two connecting rods (314). The fixed plates (31) are all fixedly connected to the second movable plate (15). Sliding sleeves (32) are slidably sleeved on both fixed plates (31). A swing plate (33) is rotatably connected between the two sliding sleeves (32). The two ends of the swing plate (33) are both interference-fitted with the first gear (34). A rotating rod (35) is rotatably connected to the side wall of the two sliding sleeves (32) away from the swing plate (33). The side wall of the two sliding sleeves (32) away from the rotating rod (35) is fixed. A motor (36) is connected to the shafts of the two motors (36), which are fixedly connected to two rotating rods (35). A first arc-shaped rack (37) is fixedly connected to each of the two rotating rods (35). The two first arc-shaped racks (37) mesh with two first gears (34). A second arc-shaped rack (38) is fixedly connected to each of the two rotating rods (35). A transmission rod (39) is rotatably connected to each of the two sliding sleeves (32) located below the rotating rods (35). The transmission rod (39) is fitted with a second gear (310) with an interference fit. The two second gears (310) are respectively meshed with a first rack (311) and a second rack (312) on both sides. The top of the two first racks (311) is fixedly connected with a third rack (313). The two third racks (313) are respectively meshed with two second arc-shaped racks (38). The two second racks (312) are fixedly connected to the fixing plate (31) through a connecting rod (314). The storage mechanism (4) includes a guide rail (41), a lifting plate (42), a rotating shaft (43), a rotating disk (44), several limiting frames (45), rollers (46), two third gears (47), two fourth racks (48), four transmission wheels (49), and two transmission belts (410). The guide rail (41) is fixedly connected to the upper wall of the workbench (1). The lifting plate (42) is slidably connected through the swing plate (33). The portion of the lifting plate (42) extending above the swing plate (33) is rotatably connected to the rotating shaft (43). The rotating disk (44) is fixedly connected to the rotating shaft (43). Several limiting frames (45) are fixedly connected to the disc (44). Rollers (46) are rotatably connected to the bottom of the lifting plate (42). Third gears (47) are rotatably connected to both sides of the bottom of the lifting plate (42). Fourth racks (48) are fixedly connected to both sides of the guide rail (41). The two third gears (47) mesh with the two fourth racks (48) respectively. Transmission wheels (49) are interference-fitted on both ends of the rotating shaft (43) and the shaft center of the two third gears (47). A transmission belt (410) is sleeved between the two transmission wheels (49) on the same side of the four transmission wheels (49).

2. The cooling device in the plastic cap production system according to claim 1, characterized in that, The shaking mechanism (24) includes a guide wheel (241) and a guide plate (242). The guide wheel (241) is rotatably connected to the lower wall of the placement plate (21), and the guide plate (242) is fixedly connected to the workbench (1). The guide wheel (241) always moves along the guide plate (242).

3. The cooling device in the plastic cap production system according to claim 1, characterized in that, A locking pin (5) is fixedly connected above the rotating disk (44). Both sides of the locking pin (5) are elastically connected to a locking block (51) by a second spring (54). The placement plate (21) has a locking groove (52) that cooperates with the locking pin (5). The inner wall of the locking groove (52) has a locking slot (53) that cooperates with the locking block (51).

4. The cooling device in the plastic cap production system according to claim 3, characterized in that, The locking pin (5) is internally slidably connected to a push rod (6), the bottom of which extends to the bottom of the swing plate (33). The top of the push rod (6) is fixedly connected to a pressing block (61), and the bottom of the locking block (51) is fixedly connected to a pressing wheel (62).

5. The cooling device in the plastic cap production system according to claim 1, characterized in that, A storage frame is fixedly connected to one side wall of the workbench (1) near the second moving plate (15), and an inclined guide plate is fixedly connected above the workbench (1).

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