CN117656401A - Cooling device in plastic cover production system - Google Patents

Abstract

The invention 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, wherein two support plates are fixedly connected above the workbench, a ball screw is rotationally connected between the two support plates, the screw directions of threads on two sides of the ball screw are opposite, moving blocks are in threaded connection with the threads on two sides of the ball screw, and a first moving plate and a second moving plate are respectively and fixedly connected with the tops of the two moving blocks; the first movable plate is fixedly connected with a placing mechanism for placing the plastic cover, and the second movable plate is fixedly connected with a turnover mechanism for turning over the plastic cover. According to the invention, the placing mechanism is arranged, when the plastic covers are cooled, the plastic covers above the placing plate can be reversely buckled on the plurality of conical fixing blocks in the shaking process by shaking the placing plate, so that the plastic covers can be arranged, a certain gap is kept between the plastic covers, and the cooling effect on the plastic covers is improved.

Description

Cooling device in plastic cover production system

Technical Field

The invention belongs to the technical field of injection molding equipment, and particularly relates to a cooling device in a plastic cover production system.

Background

The plastic bottle cap integrates the advantages of a plurality of materials due to low material cost, is popular in packaging container material factories, and is widely applied in the field of food packaging. In the production process of plastic bottle caps, it is necessary to process the plastic bottle caps by compression molding or injection molding and to cool the plastic caps after the process is completed.

However, the cooling device in the existing plastic cover production system often has the following technical problems when cooling the plastic cover:

1. when cooling the plastic covers, the plastic covers are often directly piled up at one place, and effective arrangement cannot be obtained, so that the cooling effect of piled up plastic covers is poor;

2. in the cooling process of the plastic cover, the plastic cover cannot be turned over, so that the bottom of the plastic cover cannot be directly contacted with cooling air, and comprehensive cooling treatment cannot be obtained;

3. after the cooling of moulding the lid is accomplished, often need the staff to manually pick up the lid of moulding and accomodate, the cost of labor has been improved when complex operation.

Disclosure of Invention

The invention aims at solving the problems in the background art and provides a cooling device in a plastic cover production system, which can sort plastic covers and turn over the plastic covers at the same time so as to improve the cooling effect of the plastic covers.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

a cooling device in a plastic cover production system, comprising:

the device comprises a workbench, wherein two supporting plates are fixedly connected above the workbench, a ball screw is rotationally connected between the two supporting plates, the screw directions of threads on two sides of the ball screw are opposite, moving blocks are in threaded connection with the threads on two sides of the ball screw, and a first moving plate and a second moving plate are respectively and fixedly connected to the tops of the two moving blocks;

the plastic cover overturning device comprises a first movable plate, a second movable plate, a turnover mechanism and a storage mechanism, wherein the first movable plate is fixedly connected with a placing mechanism for placing a plastic cover, the second movable plate is fixedly connected with the turnover mechanism for overturning the plastic cover, and the storage mechanism for storing the plastic cover is fixedly connected with the upper part of the workbench.

Preferably, the placing mechanism comprises a placing plate, two first springs, a plurality of conical fixing blocks and a shaking mechanism, wherein the placing plate is elastically connected to the first moving plate through the two first springs, the conical fixing blocks are fixedly connected to the upper portion of the placing plate, and the shaking mechanism for reversely buckling the plastic cover on the conical fixing blocks is rotationally connected to the bottom of the placing plate.

Preferably, the shaking mechanism comprises a guide wheel and a guide plate, wherein the guide wheel is rotationally connected to the lower wall of the placing plate, the guide plate is fixedly connected to the workbench, and the guide wheel always moves along the guide plate.

Preferably, tilting mechanism includes two fixed plates, two sliding sleeves, swinging plate, two first gears, two bull sticks, two motors, two first arc racks, two second arc racks, two transfer lines, two second gears, two first racks, two second racks, two third racks and two connecting rods, two the equal fixed connection of fixed plate is on the second movable plate, two all sliding sleeve has been cup jointed on the fixed plate, two it is connected with the swinging plate to rotate between the sliding sleeve, the equal interference fit in axle center both ends of swinging plate has first gear, two equal rotation connection has the bull stick on the side wall that the swinging plate was kept away from to the sliding sleeve, two equal fixedly connected with motor on the side wall that the bull stick was kept away from to the sliding sleeve, two the output shaft of motor respectively with two bull sticks fixed connection, two equal fixedly connected with first arc racks on the bull stick, two first arc racks respectively with two first gears intermeshing, two on the fixed connection has the second rack, two equal interference fit has two racks, two equal sliding sleeve have two first racks and two second arc racks, two equal fixed connection has the second rack.

Preferably, the storage mechanism comprises a guide rail, a lifting plate, a rotating shaft, a rotating disc, a plurality of limiting frames, rollers, two third gears, two fourth racks, four driving wheels and two driving belts, wherein the guide rail is fixedly connected to the upper wall of the workbench, the lifting plate is connected to the swinging plate in a penetrating and sliding manner, the rotating shaft is connected to the part, extending to the upper side of the swinging plate, of the lifting plate, the rotating disc is fixedly connected to the rotating shaft, the limiting frames are fixedly connected to the rotating disc, the rollers are connected to the bottom of the lifting plate in a rotating manner, the third gears are connected to the two side walls of the bottom of the lifting plate in a rotating manner, the fourth racks are fixedly connected to the two side walls of the guide rail, the two third gears are meshed with the two fourth racks respectively, the driving wheels are in interference fit with the two ends of the rotating shaft and the axes of the two third gears, and the driving belts are sleeved between the two driving wheels on the same side in the four driving wheels.

Preferably, the locking column is fixedly connected to the upper side of the rotating disc, clamping blocks are elastically connected to the two sides of the locking column through second springs, locking grooves matched with the locking column are formed in the placing plate, and clamping grooves matched with the clamping blocks are formed in the inner walls of the locking grooves.

Preferably, the inside sliding connection of locking post has the push rod, the bottom of push rod extends to the below of swinging plate, push rod top fixedly connected with extrusion piece, the bottom fixedly connected with extrusion wheel of fixture block.

Preferably, a storage frame is fixedly connected to one side wall, close to the second moving plate, of the workbench, and an inclined guide plate is fixedly connected to the upper portion of the workbench.

Compared with the prior art, the cooling device in the plastic cover production system has the advantages that:

1. according to the invention, the placing mechanism is arranged, when the plastic covers are cooled, the plastic covers above the placing plate can be reversely buckled on the plurality of conical fixing blocks in the shaking process by shaking the placing plate, so that the plastic covers are arranged, a certain gap is kept between the plastic covers, and the cooling effect on the plastic covers is improved;

2. according to the invention, after the plastic cover is reversely buckled and cooled, the motor is used for driving the rotating rod to rotate, the first gear is further driven to rotate through the first arc-shaped rack, the swinging plate is enabled to rotate to be horizontal to the placing plate, the second arc-shaped rack is used for driving the third rack to rotate, the third rack is enabled to drive the first rack to move upwards, the second rack is further driven to move downwards through the second gear, the swinging plate is enabled to move downwards in a horizontal state with the placing plate, the plastic cover is enabled to enter the limiting frame, at the moment, the motor rotates reversely, the placing plate can be driven to rotate along with the swinging plate, 180-degree overturning of the plastic cover is completed, after the placing plate is separated from the swinging plate, cooling treatment can be carried out on the other side of the plastic cover, full cooling on the front side and the back side of the plastic cover is completed, and the cooling effect of the bottom of the plastic cover is improved.

3. According to the invention, the storage mechanism is arranged, after the plastic cover is cooled, the first moving plate and the second moving plate can be driven by the ball screw to be away from each other, in the process, the lifting plate is driven by the guide rail and the roller to move upwards, after the lifting plate moves to a certain height, the rotating disc is driven by the third gear and the fourth rack to overturn, the cooled plastic cover on the swinging plate is jacked up and toppled over, and the plastic cover enters the storage frame to be stored, so that a worker does not need to manually pick up and store the plastic cover, and the labor cost is reduced.

4. According to the invention, the locking column and the locking groove are arranged, after the swinging plate rotates to be horizontal to the placing plate, the locking column enters the locking groove by downward movement of the swinging plate, so that the placing plate is automatically locked with the swinging plate, the placing plate is synchronously turned in the process that the swinging plate drives the plastic cover to turn over, the plastic cover is limited by the conical fixing block and the limiting frame, the plastic cover is prevented from falling in the turning over process, and the working efficiency and the cooling effect of cooling the plastic cover are improved.

5. According to the invention, the extrusion block and the extrusion wheel are arranged, so that after the plastic cover is turned over, the placing plate and the swinging plate can be unlocked only by pushing the push rod, the placing plate can return to the initial position under the action of the elastic force of the first spring, the unlocking work of the swinging plate and the placing plate is facilitated, and the turning work of the plastic cover is more convenient and faster.

Drawings

FIG. 1 is a schematic perspective view of a cooling device in a plastic cover production system according to the present invention;

FIG. 2 is a schematic view showing a perspective structure of a cooling device in a plastic cover production system, wherein the perspective structure is arranged above a workbench;

FIG. 3 is a schematic view of a plastic cover production system according to the present invention, showing a perspective view of a cooling device at another angle above a table;

fig. 4 is an enlarged view at a in fig. 3;

fig. 5 is an enlarged view at B in fig. 3;

FIG. 6 is an enlarged view at C in FIG. 3;

FIG. 7 is an enlarged view at D in FIG. 3;

FIG. 8 is a cross-sectional view of a locking post in a cooling device in a plastic cover production system provided by the present invention;

fig. 9 is an enlarged view at E in fig. 8;

fig. 10 is a top view of a cooling device in a plastic cover production system where a plate is placed.

In the figure, 1, a workbench; 11. a support plate; 12. a ball screw; 13. a moving block; 14. a first moving plate; 15. a second moving plate; 2. a placement mechanism; 21. placing a plate; 22. a first spring; 23. a conical fixed block; 24. a dithering mechanism; 241. a guide wheel; 242. a guide plate; 3. a turnover mechanism; 31. a fixing plate; 32. a sliding sleeve; 33. a swinging plate; 34. a first gear; 35. a rotating rod; 36. a motor; 37. a first arcuate rack; 38. a second arcuate rack; 39. a transmission rod; 310. a second gear; 311. a first rack; 312. a second rack; 313. a third rack; 314. a connecting rod; 4. a storage mechanism; 41. a guide rail; 42. a lifting plate; 43. a rotating shaft; 44. a rotating disc; 45. a limit frame; 46. a roller; 47. a third gear; 48. a fourth rack; 49. a driving wheel; 410. a transmission belt; 5. locking the column; 51. a clamping block; 52. a locking groove; 53. a clamping groove; 54. a second spring; 6. a push rod; 61. extruding a block; 62. and (5) extruding the wheel.

Detailed Description

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

As shown in fig. 1 to 10, a cooling device in a plastic cap production system includes:

the workbench 1, two supporting plates 11 are fixedly connected above the workbench 1, a ball screw 12 is rotatably connected between the two supporting plates 11, the screw directions of threads on two sides of the ball screw 12 are opposite, moving blocks 13 are in threaded connection with the threads on two sides of the ball screw 12, and the tops of the two moving blocks 13 are fixedly connected with a first moving plate 14 and a second moving plate 15 respectively;

wherein, the top of workstation 1 is equipped with cooling body, can blow the cooling air to workstation 1 top through cooling body, accomplishes the cooling treatment to the plastic cover.

The first movable plate 14 is fixedly connected with a placing mechanism 2 for placing the plastic cover, the second movable plate 15 is fixedly connected with a turnover mechanism 3 for turning over the plastic cover, and the upper part of the workbench 1 is fixedly connected with a containing mechanism 4 for containing the plastic cover.

The placing mechanism 2 comprises a placing plate 21, two first springs 22, a plurality of conical fixing blocks 23 and a shaking mechanism 24, wherein the placing plate 21 is elastically connected to the first moving plate 14 through the two first springs 22, the plurality of conical fixing blocks 23 are fixedly connected to the upper side of the placing plate 21, and the shaking mechanism 24 for reversely buckling a plastic cover on the conical fixing blocks 23 is rotationally connected to the bottom of the placing plate 21.

The shaking mechanism 24 comprises a guide wheel 241 and a guide plate 242, wherein the guide wheel 241 is rotatably connected to the lower wall of the placement plate 21, the guide plate 242 is fixedly connected to the workbench 1, and the guide wheel 241 always moves along the guide plate 242.

Aiming at the problem that the cooling effect of the stacked parts of the plastic covers is poor because the plastic covers cannot be arranged when being cooled in the prior art, the invention is provided with the placing mechanism 2, when the plastic covers are cooled, the plastic covers can be conveyed to the placing plate 21, then the guide wheels 241 at the bottom of the placing plate 21 are moved through the movement of the first moving plate 14 and the placing plate 21, and the placing plate 21 is further subjected to reciprocating vertical displacement under the action of the guide plates 242, so that the placing plate 21 shakes, the plastic covers above the placing plate 21 are reversely buckled on the conical fixing blocks 23 in the shaking process, the arranging effect of the plastic covers is achieved, a certain gap is kept between the plastic covers, and the cooling effect of the plastic covers is improved.

The turnover mechanism 3 comprises two fixing plates 31, two sliding sleeves 32, a swinging plate 33, two first gears 34, two rotating rods 35, two motors 36, two first arc racks 37, two second arc 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, wherein the two fixing plates 31 are fixedly connected to the second moving plate 15, the sliding sleeves 32 are sleeved on the two fixing plates 31 in a sliding manner, the swinging plate 33 is connected between the two sliding sleeves 32 in a rotating manner, the rotating rods 35 are connected to the two ends of the axle center of the swinging plate 33 in an interference manner, the motors 36 are fixedly connected to one side wall of the two sliding sleeves 32, the output shafts of the two motors 36 are fixedly connected with the two rotating rods 35 respectively, the first arc racks 37 are fixedly connected to the two rotating rods 35, the two first arc racks 37 are respectively meshed with the two first racks 34, the two second racks 312 are fixedly meshed with the two second racks 312, the two arc racks 312 are fixedly meshed with the two second racks 310, and the two arc racks 312 are fixedly meshed with the two second racks 310 are fixedly connected to the two second racks 35, and the two arc racks 313 are fixedly meshed with the two second racks 38.

In order to solve the problem that in the prior art, the bottom of the plastic cover cannot be directly contacted with cooling air, so that comprehensive cooling treatment cannot be obtained, the turnover mechanism 3 is provided, after the plastic cover is reversely buckled and cooled, the motor 36 drives the rotating rod 35 to rotate, the first arc-shaped rack 37 further drives the first gear 34 to rotate, the swinging plate 33 is enabled to rotate to be horizontal to the placing plate 21, the second arc-shaped rack 38 drives the third rack 313 to rotate, the third rack 313 drives the first rack 311 to move upwards, the second rack 312 is driven to move downwards through the second gear 310, the second rack 312 moves downwards, the fixed plate 31 is driven to move downwards relative to the sliding sleeve 32 through the connecting rod 314, the swinging plate 33 is enabled to keep horizontal to the placing plate 21, the plastic cover is enabled to enter the limiting frame 45, at the moment, the motor 36 is driven to reversely rotate, the placing plate 21 is enabled to rotate to follow the swinging plate 33 to overturn 180 DEG, the plastic cover is enabled to be separated from the swinging plate 33, and the plastic cover is cooled on the other side after the placing plate 21 is enabled to be separated from the swinging plate 33, and the bottom of the plastic cover is cooled completely, and the comprehensive cooling effect is improved.

The storage mechanism 4 comprises a guide rail 41, a lifting plate 42, a rotating shaft 43, a rotating disc 44, a plurality of limiting frames 45, idler wheels 46, two third gears 47, two fourth racks 48, four driving wheels 49 and two driving belts 410, wherein the guide rail 41 is fixedly connected to the upper wall of the workbench 1, the lifting plate 42 penetrates through the swinging plate 33 and is connected with the swinging plate 33 in a sliding manner, the rotating shaft 43 is rotatably connected with the part, extending to the upper side of the swinging plate 33, of the lifting plate 42, the rotating disc 43 is fixedly connected with the rotating disc 44, the rotating disc 44 is fixedly connected with the plurality of limiting frames 45, the bottom of the lifting plate 42 is rotatably connected with the idler wheels 46, the two side walls at the bottom of the lifting plate 42 are rotatably connected with the third gears 47, the two side walls at the bottom of the guide rail 41 are fixedly connected with the fourth racks 48, the two third gears 47 are respectively meshed with the two fourth racks 48, the two ends of the rotating shaft 43 and the axes of the two third gears 47 are in interference fit with the 49, and the driving wheels 410 are sleeved between the two 49 at the same side in the four driving wheels 49.

Wherein, fixedly connected with accomodates the frame on workstation 1 is close to a lateral wall of second movable plate 15, and the top fixedly connected with slope stock guide of workstation 1 for in the plastic lid can fall to accomodate the frame through the slope stock guide when empting.

According to the invention, the storage mechanism 4 is arranged, when the plastic cover is cooled, the ball screw 12 can drive the first moving plate 14 and the second moving plate 15 to be away from each other, in the process, the lifting plate 42 is driven to move upwards through the guide rail 41 and the roller 46, after the plastic cover is moved to a certain height, the rotating disc 44 is driven to overturn through the mutual engagement of the third gear 47 and the fourth rack 48, and the cooled plastic cover on the swinging plate 33 is jacked up and toppled over to enter the storage frame for storage, so that the plastic cover does not need to be manually picked up and stored by the worker, and the labor cost is reduced.

In addition, the locking column 5 is fixedly connected to the upper portion of the rotating disc 44, the clamping blocks 51 are elastically connected to the two sides of the locking column 5 through the second springs 54, the locking grooves 52 matched with the locking column 5 are formed in the placing plate 21, the clamping grooves 53 matched with the clamping blocks 51 are formed in the inner wall of the locking grooves 52, after the swinging plate 33 rotates to be horizontal with the placing plate 21, the locking column 5 is enabled to enter the locking grooves 52 through downward movement of the swinging plate 33, the clamping blocks 51 are extruded to the clamping grooves 53, when the clamping blocks 51 are horizontal with the clamping grooves 53, the clamping blocks 51 automatically pop up into the clamping grooves 53 under the action of the elasticity of the second springs 54, so that the placing plate 21 is automatically locked with the swinging plate 33, the swinging plate 33 drives the placing plate 21 to synchronously overturn in the plastic cover, the plastic cover is limited through the conical fixing blocks 23 and the limiting frames 45, the plastic cover is prevented from falling in the overturning process, and the working efficiency and the cooling effect of the plastic cover are improved.

Besides, the push rod 6 is slidably connected to the inside of the locking column 5, the bottom of the push rod 6 extends to the lower side of the swinging plate 33, the extrusion block 61 is fixedly connected to the top of the push rod 6, the extrusion wheel 62 is fixedly connected to the bottom of the clamping block 51, after the plastic cover is turned over, the extrusion block 61 can extrude the extrusion wheel 62 only by pushing the push rod 6, and then the clamping block 51 is pulled out of the clamping groove 53, so that the placing plate 21 and the swinging plate 33 are unlocked, the placing plate 21 can return to the initial position under the action of the elastic force of the first spring 22, the unlocking work of the swinging plate 33 and the placing plate 21 is facilitated, and the turning work of the plastic cover is more convenient and rapid.

The invention can explain its functional principle by the following modes of operation:

when the plastic cover placing device is used, the plastic cover is placed into the placing plate 21, then the first moving plate 14 and the second moving plate 15 are driven to be close to each other through the rotation of the ball screw 12, in the process, the guide wheel 241 at the bottom of the placing plate 21 moves, and the placing plate 21 is further subjected to reciprocating vertical displacement under the action of the guide plate 242, so that the placing plate 21 shakes, the plastic cover above the placing plate 21 is reversely buckled on the plurality of conical fixing blocks 23 in the shaking process, and the plastic cover is tidied;

when the first moving plate 14 and the second moving plate 15 are closest to each other, cooling air is blown onto the placing plate 21 by the cooling mechanism, and the inverted plastic cover is subjected to cooling treatment;

after cooling for a certain time, the motor 36 drives the rotating rod 35 to rotate, the first arc-shaped rack 37 further drives the first gear 34 to rotate, the swinging plate 33 rotates to be horizontal with the placing plate 21, the second arc-shaped rack 38 drives the third rack 313 to rotate, the third rack 313 drives the first rack 311 to move upwards, the second gear 310 drives the second rack 312 to move downwards, the connecting rod 314 drives the fixed plate 31 to move downwards relative to the sliding sleeve 32, the swinging plate 33 keeps the horizontal state of the placing plate 21 to move downwards, the locking column 5 is conveyed into the locking groove 52, locking of the swinging plate 33 and the placing plate 21 is achieved, at the moment, the plastic cover enters into the limiting frame 45, the driving motor 36 reversely rotates, the placing plate 21 can be driven to rotate along with the swinging plate 33, 180-degree overturning of the plastic cover is completed, after the placing plate 21 is separated from the swinging plate 33, the other surface of the plastic cover can be cooled, and the cooling effect on the bottom of the plastic cover is improved;

after the plastic cover is fully cooled, the first moving plate 14 and the second moving plate 15 are separated from each other again, in this process, the lifting plate 42 is driven to move upwards through the guide rail 41 and the roller 46, and after the lifting plate moves to a certain height, the rotating disc 44 is driven to overturn through the mutual engagement of the third gear 47 and the fourth rack 48, so that the cooled plastic cover on the swinging plate 33 is jacked up and toppled over, and the plastic cover enters the storage frame for storage.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (8)

1. A cooling device in a plastic cover production system, comprising:

the device comprises a workbench (1), wherein two supporting plates (11) are fixedly connected above the workbench (1), a ball screw (12) is rotationally connected between the two supporting plates (11), the screw directions of threads on two sides of the ball screw (12) are opposite, moving blocks (13) are in threaded connection with the threads on two sides of the ball screw (12), and a first moving plate (14) and a second moving plate (15) are respectively and fixedly connected to the tops of the two moving blocks (13);

the plastic cover placing device is characterized in that a placing mechanism (2) for placing the plastic cover is fixedly connected to the first moving plate (14), a turnover mechanism (3) for turnover the plastic cover is fixedly connected to the second moving plate (15), and a storage mechanism (4) for storing the plastic cover is fixedly connected to the upper side of the workbench (1).

2. The cooling device in the plastic cover production system according to claim 1, wherein the placing mechanism (2) comprises a placing plate (21), two first springs (22), a plurality of conical fixing blocks (23) and a shaking mechanism (24), the placing plate (21) is elastically connected to the first moving plate (14) through the two first springs (22), a plurality of conical fixing blocks (23) are fixedly connected to the upper portion of the placing plate (21), and the shaking mechanism (24) for reversely buckling the plastic cover on the conical fixing blocks (23) is rotatably connected to the bottom of the placing plate (21).

3. Cooling device in a plastic cover production system according to claim 2, characterized in that the shaking mechanism (24) comprises 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), the guide plate (242) is fixedly connected to the workbench (1), and the guide wheel (241) always moves along the guide plate (242).

4. The cooling device in the plastic cover production system according to claim 1, wherein the turnover mechanism (3) comprises two fixed plates (31), two sliding sleeves (32), a swinging plate (33), two first gears (34), two rotating rods (35), two motors (36), two first arc racks (37), two second arc 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 two fixed plates (31) are fixedly connected to the second movable plate (15), the two fixed plates (31) are respectively sleeved with the sliding sleeves (32) in a sliding manner, the swinging plate (33) is rotatably connected between the two sliding sleeves (32), the first gears (34) are respectively in interference fit with the two ends of the axle center of the swinging plate (33), one side wall, far away from the swinging plate (33), of the two sliding sleeves (32) is rotatably connected with the motor (35), the two rotating rods (36) are respectively connected with the two side walls (35) of the two sliding sleeves (36), two all fixedly connected with first arc rack (37) on bull stick (35), two first arc rack (37) respectively with two first gear (34) intermeshing, two equal fixedly connected with second arc rack (38) on bull stick (35), two slide sleeve (32) are located the position of bull stick (35) below and all rotate and be connected with transfer line (39), two equal interference fit has second gear (310) on transfer line (39), two the both sides of second gear (310) are meshed respectively with first rack (311) and second rack (312), two the equal fixedly connected with third rack (313) in top of first rack (311), two third rack (313) respectively with two second arc rack (38) intermeshing, two second rack (312) all are connected with fixed plate (31) through connecting rod (314).

5. The cooling device in the plastic cover production system according to claim 4, wherein the containing mechanism (4) comprises a guide rail (41), a lifting plate (42), a rotating shaft (43), a rotating disc (44), a plurality of limiting frames (45), rollers (46), two third gears (47), two fourth racks (48), four driving wheels (49) and two driving belts (410), the guide rail (41) is fixedly connected to the upper wall of the workbench (1), the lifting plate (33) is connected with the lifting plate (42) in a penetrating sliding manner, the part, extending to the upper side of the swinging plate (33), of the lifting plate (42) is rotatably connected with the rotating shaft (43), the rotating disc (44) is fixedly connected with the rotating disc (44), the limiting frames (45) are fixedly connected to the rotating disc (44), the bottoms of the lifting plate (42) are rotatably connected with the rollers (46), the third gears (47) are rotatably connected to the two side walls of the bottom of the lifting plate (42), the two side walls of the guide rail (41) are fixedly connected with the fourth racks (48), the two racks (47) are in interference fit with the axes (47), the two third gears (47) are meshed with the axes (47), a driving belt (410) is sleeved between two driving wheels (49) on the same side of the four driving wheels (49).

6. The cooling device in the plastic cover production system according to claim 5, wherein a locking column (5) is fixedly connected above the rotating disc (44), clamping blocks (51) are elastically connected to two sides of the locking column (5) through second springs (54), locking grooves (52) matched with the locking column (5) are formed in the placing plate (21), and clamping grooves (53) matched with the clamping blocks (51) are formed in the inner wall of the locking grooves (52).

7. The cooling device in the plastic cover production system according to claim 6, wherein the locking column (5) is slidably connected with a push rod (6), the bottom of the push rod (6) extends to the lower side of the swinging plate (33), the top of the push rod (6) is fixedly connected with a squeezing block (61), and the bottom of the clamping block (51) is fixedly connected with a squeezing wheel (62).

8. The cooling device in the plastic cover production system according to claim 1, wherein a receiving frame is fixedly connected to a side wall of the workbench (1) close to the second moving plate (15), and an inclined guide plate is fixedly connected to the upper side of the workbench (1).