Cooling device and cooling method for polycarbonate plate

Abstract

The invention relates to the technical field of plate processing, in particular to a cooling device and method for a polycarbonate plate, and the cooling device comprises a base, a conveying device for conveying the plate, a driving device for driving the conveying device and an adjusting mechanism; the conveying device and the driving device are both arranged on the base, and the conveying device comprises a conveying assembly capable of detecting the thickness of a plate; the driving device comprises a rotary driver and a first transmission assembly, and the driving end of the rotary driver is in transmission connection with the conveying assembly through the first transmission assembly; the adjusting mechanism is used for adjusting the transmission ratio of the first transmission assembly. The function of adjusting the conveying speed of the plates according to the thicknesses of the plates is achieved, and then the plates with different thicknesses can be cooled to the specified temperature in the corresponding areas. The problems of thermal stress accumulation and buckling deformation caused by insufficient adaptability of a fixed cooling rate to plates with different thicknesses are solved.

Description

Technical Field

[0001] The invention relates to the technical field of plate processing, and in particular to a cooling device and a cooling method for a polycarbonate plate. Background Art

[0002] Polycarbonate sheets are made of pure thermoplastics synthesized from petrochemicals, which have high lightness and high light transmittance. After processing, polycarbonate sheets need to be cooled and formed, and in order to improve the quality of polycarbonate sheets, it is necessary to avoid deformation of the sheets caused by too fast cooling.

[0003] To this end, a Chinese patent with authorization announcement number CN113492506B discloses a cooling device for an optical-grade polycarbonate plate, which uses a bottom trough and a cover plate as a combined structure to form a cooling trough, and multiple groups of cooling troughs are installed, wherein the bottom trough is the bottom structure of the cooling trough, in which an air-cooling structure is installed, which mainly plays the role of supporting the airflow from the bottom of the plate, and can also perform gradient cooling of the plate through a hot air flow with a gradually decreasing temperature, thereby reducing the one-time cooling speed of the plate and preventing deformation of the plate. During its working process, hot air (cold air relative to the temperature of the plate) can act on the bottom of the plate without obstacles, thereby playing an effective cooling role.

[0004] However, during the processing of the sheet, the internal heat of the thicker sheet cannot be transferred to the surface in time, and a steep temperature gradient is formed during the rapid cooling process, which makes the shrinkage rate difference between the surface and the core layer too large, resulting in internal stress concentration and even warping. Thinner sheets are exposed to low temperature environment due to excessive cooling time, and excessive cooling of the surface is prone to micro cracks or optical distortion, which seriously affects the product yield. Summary of the invention

[0005] In view of the above problems, a cooling device and a cooling method for polycarbonate plates are provided, which solve the problem of thermal stress accumulation and warping deformation caused by insufficient adaptability of a fixed cooling rate to plates of different thicknesses through a base, a conveying device, a driving device and an adjusting mechanism.

[0006] In order to solve the problems of the prior art, the present invention provides a cooling device for a polycarbonate plate, comprising a base, a conveying device for conveying the plate, a driving device for driving the conveying device and an adjusting mechanism; the conveying device and the driving device are both arranged on the base, and the conveying device includes a conveying component capable of detecting the thickness of the plate; the driving device includes a rotary driver and a first transmission component, and the driving end of the rotary driver is connected to the conveying component through the first transmission component; the adjusting mechanism is used to adjust the transmission ratio of the first transmission component.

[0007] Preferably, the conveying assembly includes a mounting frame and two material rollers distributed vertically up and down, and bearing seats for supporting the material roller are provided at both ends of each material roller; the bearing seat of the lower material roller is arranged on the base; the mounting frame is arranged on the base, and a nitrogen spring is provided on the mounting frame, and the piston rod of the nitrogen spring is connected to the bearing seat of the upper material roller.

[0008] Preferably, the adjustment mechanism includes a transmission disc, a driving wheel, a transmission belt and an adjustment assembly; the transmission disc is transmission-connected to the conveying assembly, and the transmission disc is provided with at least three sleeves that can slide radially along the transmission disc; the driving wheel is transmission-connected to the rotary driver, and the transmission belt is spanned over the driving wheel and the sleeve; the adjustment assembly is used to control the sliding of the sleeve.

[0009] Preferably, a lifting assembly for controlling the lifting of the mounting frame is provided on the base, and an elastic member is sleeved on the piston rod of the nitrogen spring, and a pressure sensor is provided between the piston rod and the elastic member.

[0010] Preferably, the adjustment assembly includes a transmission ring and a connecting rod; the transmission ring is arranged on the base so as to be liftable, and the transmission ring is transmission-connected to the mounting frame; both ends of the connecting rod are respectively hinged with an articulated seat, and the connecting rod is respectively connected to the transmission ring and the sleeve through the articulated seat.

[0011] Preferably, the first transmission assembly includes a transmission shaft and a gear ring; the transmission shaft is rotatably arranged on the base, and a rotating gear is sleeved on the transmission shaft; the gear ring is sleeved on the transmission plate, and the rotating gear is meshingly connected with the gear ring; a second transmission assembly is provided on the base, and the transmission shaft is transmission-connected to the material roller via the second transmission assembly.

[0012] Preferably, the second transmission assembly includes a second rotating shaft, a second bevel gear and a bevel gear disk; the second rotating shaft is rotatably set on the base, and the second rotating shaft is transmission-connected to the transmission shaft; there are two second bevel gears, and the two second bevel gears are both sleeved on the second rotating shaft; there are two bevel gear disks, and the two bevel gear disks are respectively sleeved on two material rollers, and the two bevel gear disks are respectively meshed and connected with the two second bevel gears.

[0013] Preferably, the lifting assembly includes a screw rod, which is rotatably arranged on the base, and the mounting frame is threadedly connected to the screw rod; the base is built with a motor for driving the screw rod to rotate.

[0014] Preferably, a stand is provided on the base, and an infrared thermometer for detecting the surface temperature of the plate is provided on the stand.

[0015] A cooling method for a polycarbonate sheet comprises the following steps: S1. Convey the plate through the conveying component and detect the thickness of the plate during conveying; S2. The transmission ratio of the first transmission assembly is adjusted by the adjusting mechanism, and the rotary drive is started to cool the plate step by step during the conveying process.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the function of adjusting the conveying speed of the plate according to the thickness of the plate through the base, conveying device, driving device and adjusting mechanism, so that plates of different thicknesses can be cooled to the specified temperature in the corresponding area. At the same time, the temperature difference between the inner and outer layers of the plate can be controlled within the specified range, avoiding the problem of warping deformation caused by internal stress concentration, and solving the problem of thermal stress accumulation and warping deformation caused by insufficient adaptability of the fixed cooling rate to plates of different thicknesses. When the thickness of the plate is thicker, the transmission ratio of the transmission component is increased, the conveying speed of the conveying device is reduced, and the cooling time of the plate is increased. Avoid the situation where the internal heat of the plate cannot be transferred to the surface in time, resulting in a large temperature difference between the inner and outer layers. When the thickness of the plate is thin, reduce the transmission ratio of the transmission component, thereby increasing the conveying speed of the conveying device and reducing the cooling time of the plate. Avoid the problem of micro cracks or deformation of thinner plates due to excessively long cooling time. Ensure the processing quality of the plate.

[0017] 2. The present invention realizes the function of sensing the thickness of the plate by adjusting the spacing of the material rollers through the mounting frame, the material rollers and the lifting assembly. When changing different plates, the plate squeezes the upper material roller when passing through the material roller, and the piston rod of the nitrogen spring contracts under the squeezing action, thereby allowing the plate to pass through the material roller smoothly. In addition, the nitrogen spring can provide a relatively constant elastic force, through which the material roller is pulled, the gravity on the material roller is balanced, the pressure caused by the material roller on the plate is reduced, and the plate is prevented from being deformed under the squeezing force.

[0018] 3. The present invention realizes the function of controlling the transmission ratio of the transmission assembly through a transmission disc, a driving wheel, a transmission belt and an adjustment assembly. The rotation radius of the transmission belt on one side of the transmission disc can be adjusted by controlling the radial sliding of multiple sleeves along the transmission disc. Then, when the transmission belt is driven to rotate by a driving wheel with a fixed speed, the rotation speed of the transmission disc is adjusted. The transmission disc is connected to the conveying device, and the conveying speed of the conveying device can be adjusted by adjusting the rotation speed of the transmission disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic schematic diagram of a cooling device for a polycarbonate plate of the present invention from a first viewing angle.

[0020] Figure 2 It is a three-dimensional schematic diagram of the cooperation between a plate and a conveying assembly of a cooling device for a polycarbonate plate of the present invention.

[0021] Figure 3 It is a three-dimensional schematic diagram of the cooperation of a conveying device, a driving device and an adjusting mechanism in a cooling device for a polycarbonate plate of the present invention.

[0022] Figure 4It is a three-dimensional schematic diagram of two groups of conveying components in a cooling device for a polycarbonate plate of the present invention.

[0023] Figure 5 It is a three-dimensional schematic diagram of a driving device in a cooling device for a polycarbonate plate of the present invention.

[0024] Figure 6 It is a three-dimensional schematic diagram of a first transmission assembly and an adjustment mechanism in a cooling device for a polycarbonate plate of the present invention.

[0025] Figure 7 The present invention is a schematic diagram of a three-dimensional exploded view of a transmission disc and an adjustment component in a cooling device for a polycarbonate plate.

[0026] Figure 8 It is a three-dimensional schematic diagram of a mounting frame and a lifting assembly in a cooling device for a polycarbonate plate of the present invention.

[0027] Fig. 9 The present invention Figure 8 A local enlarged schematic diagram of point A in the middle.

[0028] Fig.10 It is a stereoscopic schematic diagram of a cooling device for a polycarbonate plate of the present invention from a second viewing angle.

[0029] The numbers in the figure are: 1, base; 11, bracket; 111, first rotating shaft; 112, first bevel gear; 12, stand; 121, infrared thermometer; 2, conveying device; 21, conveying assembly; 211, mounting frame; 2111, nitrogen spring; 2112, elastic member; 2113, stand; 2114, connecting ring; 212, material roller; 2121, bearing seat; 22, lifting assembly; 221, screw; 3, driving device; 31, rotating Driver; 32. First transmission assembly; 321. Transmission shaft; 3211. Rotating gear; 322. Gear ring; 33. Second transmission assembly; 331. Second rotating shaft; 332. Second bevel gear; 333. Bevel gear disc; 4. Adjustment mechanism; 41. Transmission disc; 411. Sleeve; 412. Sliding seat; 42. Driving wheel; 43. Transmission belt; 44. Adjustment assembly; 441. Transmission ring; 442. Connecting rod; 4421. Articulated seat; 5. Plate. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Reference Figure 1-Figure 3A cooling device for a polycarbonate plate comprises a base 1, a conveying device 2 for conveying a plate 5, a driving device 3 for driving the conveying device 2 and an adjusting mechanism 4; the conveying device 2 and the driving device 3 are both arranged on the base 1, the conveying device 2 comprises a conveying component 21 capable of detecting the thickness of the plate 5; the driving device 3 comprises a rotary driver 31 and a first transmission component 32, the driving end of the rotary driver 31 is connected to the conveying component 21 through the first transmission component 32; the adjusting mechanism 4 is used to adjust the transmission ratio of the first transmission component 32.

[0032] The present invention realizes the function of adjusting the conveying speed of the plate 5 according to the thickness of the plate 5 through the base 1, the conveying device 2, the driving device 3 and the adjusting mechanism 4, so that the plates 5 of different thicknesses can be cooled to the specified temperature in the corresponding area. At the same time, the temperature difference between the inner and outer layers of the plate 5 can be controlled within the specified range, avoiding the problem of warping deformation caused by internal stress concentration, and solving the problem of thermal stress accumulation and warping deformation caused by the insufficient adaptability of the fixed cooling rate to the plates 5 of different thicknesses. The base 1 and the conveying device 2 are provided with a heat insulation plate, so as to form a cabin for cooling the plate 5, and the cabin is provided with an air cooling device for cooling the plate 5. The cabin and the air cooling device are both prior art and are not shown in the figure. The conveying component 21 detects the thickness of the plate 5 when conveying the plate 5, and then cooperates with the adjusting mechanism 4 to adjust the corresponding conveying speed. The rotary driver 31 is preferably a servo motor, and a controller for human-computer interaction is provided on the base 1, and the rotary driver 31 is electrically connected to the controller.

[0033] In the working state, the processed plate 5 is transported by the conveying device 2, and the plate 5 can be stepped cooled in the cabin through the air cooling device. During the transportation, the thickness of the plate 5 is detected by the conveying component 21, and according to the thickness of the plate 5, the conveying component 21 adjusts the transmission ratio of the first transmission component 32 through the adjustment mechanism 4, and provides a constant rotation speed through the rotary driver 31. The rotary driver 31 provides driving force for the conveying device 2 through the first transmission component 32, so after adjusting the transmission ratio of the first transmission component 32, the conveying speed of the conveying device 2 changes accordingly. When the thickness of the plate 5 is thicker, the transmission ratio of the first transmission component 32 is increased, the conveying speed of the conveying device 2 is reduced, and the cooling time of the plate 5 is increased. Avoid the situation where the internal heat of the plate 5 cannot be transferred to the surface in time, resulting in a large temperature difference between the inner and outer layers. When the thickness of the plate 5 is thin, reduce the transmission ratio of the first transmission component 32, and then increase the conveying speed of the conveying device 2, and reduce the cooling time of the plate 5. Avoid the problem of micro cracks or deformation of thinner plates 5 due to excessive cooling time. Ensure the processing quality of the plate 5.

[0034] Reference Figure 2-Figure 4The conveying assembly 21 includes a mounting frame 211 and two material rollers 212 distributed vertically up and down, and bearing seats 2121 for supporting the material roller 212 are provided at both ends of each material roller 212; the bearing seat 2121 of the lower material roller 212 is arranged on the base 1; the mounting frame 211 is arranged on the base 1, and a nitrogen spring 2111 is provided on the mounting frame 211, and the piston rod of the nitrogen spring 2111 is connected to the bearing seat 2121 of the upper material roller 212.

[0035] The present invention realizes the function of detecting the thickness of the plate 5 by adjusting the spacing of the material rollers 212 through the mounting frame 211, the material rollers 212 and the lifting assembly 22. When different plates 5 are replaced, the plate 5 squeezes the upper material roller 212 when passing through the material roller 212, and the piston rod of the nitrogen spring 2111 contracts under the squeezing action, so that the plate 5 can pass through the material roller 212 smoothly. In addition, the nitrogen spring 2111 can provide a relatively constant elastic force, through which the material roller 212 is pulled, the gravity of the material roller 212 is balanced, the pressure caused by the material roller 212 on the plate 5 is reduced, and the plate 5 is prevented from being deformed under the squeezing force. There is a gap between the two material rollers 212 for the plate 5 to pass through, and a central shaft connected to the material roller 212 is penetrated on the material roller 212, and the material roller 212 is rotatably connected to the bearing seat 2121 through the central shaft. There are multiple groups of material rollers 212, and the driving device 3 drives the multiple groups of material rollers 212 to rotate to complete the conveying of the plate 5. In the working state, when the plate 5 passes through the gap between the two material rollers 212, the two material rollers 212 are squeezed by the plate 5, thereby pushing the upper material roller 212 upward to compress the nitrogen spring 2111. During the upward movement of the upper material roller 212, the transmission ratio of the first transmission assembly 32 is adjusted by the adjustment mechanism 4, and the conveying device 2 controls the plate 5 to cool at a corresponding speed.

[0036] Reference Figure 2 , Figure 5-Figure 7 : The adjusting mechanism 4 includes a transmission disc 41, a driving wheel 42, a transmission belt 43 and an adjusting assembly 44; the transmission disc 41 is transmission-connected to the conveying assembly 21, and the transmission disc 41 is provided with at least three sleeves 411 which can slide radially along the transmission disc 41; the driving wheel 42 is transmission-connected to the rotary driver 31, and the transmission belt 43 is spanned over the driving wheel 42 and the sleeve 411; the adjusting assembly 44 is used to control the sliding of the sleeve 411.

[0037] The present invention realizes the function of controlling the transmission ratio of the first transmission assembly 32 through the transmission disc 41, the driving wheel 42, the transmission belt 43 and the adjustment assembly 44. The rotation radius of the transmission belt 43 on one side of the transmission disc 41 can be adjusted by controlling the radial sliding of multiple sleeves 411 along the transmission disc 41, and then the rotation speed of the transmission disc 41 is adjusted when the driving wheel 42 with a fixed speed drives the transmission belt 43 to rotate, and the transmission disc 41 is connected to the conveying device 2 by transmission, and the conveying speed of the conveying device 2 can be adjusted by adjusting the rotation speed of the transmission disc 41. The driving wheel 42 is connected to the driving end of the rotary driver 31 through the first transmission assembly 32, and the transmission disc 41 is connected to the driving wheel 42 by transmission through the sleeve 411 and the transmission belt 43. At least three slide grooves are provided on the transmission disc 41 for guiding the movement of the slide seat 412, and the slide grooves extend along the radial direction of the transmission disc 41. The multiple slide grooves are distributed in a circular array about the axis of the transmission disc 41, and a slide seat 412 is slidably mounted on each slide groove, and the sleeve 411 is fixedly mounted on the slide seat 412. The more the number of slides 412 and sleeves 411 is, the more stable the transmission of the transmission belt 43 is. The sleeve 411 is fixedly mounted on the slide 412, and the sleeve 411 has an anti-skid rubber layer on the outside to avoid the problem of slipping between the sleeve 411 and the transmission belt 43 and affecting the transmission. A bracket 11 is provided on the base 1, and a first rotating shaft 111 is rotatably provided on the bracket 11. The driving wheel 42 is sleeved on the first rotating shaft 111. The first rotating shaft 111 and the rotary driver 31 are both sleeved with a first bevel gear 112, and the two first bevel gears 112 are meshed and connected. A tensioning wheel is slidably provided on the bracket 11, and the tension of the transmission belt 43 is maintained by the tensioning wheel. After the adjustment component 44 adjusts the position of the sleeve 411, the transmission belt 43 can still be stably sleeved on the sleeve 411 and the driving wheel 42.

[0038] In the working state, the operator starts the rotary driver 31 through the controller. After receiving the signal, the rotary driver 31 drives the first rotating shaft 111 to rotate through the first bevel gear 112. The first rotating shaft 111 drives the driving wheel 42 to rotate. The driving wheel 42 drives the sleeve 411 to rotate through the transmission belt 43, and drives the transmission disc 41 to rotate through the sleeve 411. The transmission disc 41 is connected to the conveying assembly 21 through the first transmission assembly 32. When the transmission disc 41 rotates, it drives the material roller 212 to rotate, and then pushes the plate 5 to move through the material roller 212.

[0039] Reference Figure 2-Figure 4 : A lifting assembly 22 for controlling the lifting of the mounting frame 211 is provided on the base 1, and an elastic member 2112 is sleeved on the piston rod of the nitrogen spring 2111, and a pressure sensor is provided between the piston rod and the elastic member 2112.

[0040] The present invention realizes the function of automatically adjusting the position of the mounting frame 211 according to the movement of the material roller 212 through the lifting component 22, the elastic member 2112 and the pressure sensor. The pressure sensor and the lifting component 22 are both electrically connected to the controller. When the upper material roller 212 is squeezed by the plate 5 and moves upward, the piston rod of the nitrogen spring 2111 contracts, and the elastic member 2112 is also compressed. The pressure sensor senses the pressure increase and feeds back the signal to the controller. The controller sends a signal to the lifting component 22, and the lifting component 22 controls the mounting frame 211 to move upward. Then the adjustment component 44 controls the movement of the slide 412, and the slide 412 drives the sleeve 411 to move, adjusts the transmission ratio of the driving wheel 42 and the transmission disc 41, and changes the rotation speed of the material roller 212.

[0041] Reference Figure 6 and Figure 7 : The adjustment component 44 includes a transmission ring 441 and a connecting rod 442; the transmission ring 441 is arranged on the base 1 so as to be liftable, and the transmission ring 441 is transmission-connected to the mounting frame 211; both ends of the connecting rod 442 are respectively hinged with an articulated seat 4421, and the connecting rod 442 is respectively connected to the transmission ring 441 and the sleeve 411 through the articulated seat 4421.

[0042] The present invention realizes the function of adjusting the position of the sleeve 411 accordingly when the thickness of the plate 5 changes through the transmission ring 441, the connecting rod 442 and the hinge seat 4421. The mounting frame 211 is provided with a vertical rod 2113, and the end of the vertical rod 2113 away from the mounting frame 211 is connected with a connecting ring 2114, and the connecting ring 2114 is rotatably connected with the transmission ring 441. In the working state, the lifting component 22 adjusts the height of the mounting frame 211 according to the thickness of the plate 5. When the mounting frame 211 moves, the connecting ring 2114 is driven to move by the vertical rod 2113, and the connecting ring 2114 drives the transmission ring 441 to move. In this process, the vertical rod 2113 and the connecting ring 2114 are rotatably connected to the transmission ring 441, so that the vertical rod 2113 and the connecting ring 2114 will not affect the rotation of the transmission disk 41. The transmission ring 441 pushes or pulls the sleeve 411 to move through the connecting rod 442 , and the sleeve 411 moves radially along the transmission disc 41 under the guidance of the slide seat 412 and the slide groove, thereby adjusting the transmission ratio of the transmission belt 43 and controlling the rotation speed of the material roller 212 .

[0043] Reference Figure 3 , Figure 8 and Fig. 9 : The first transmission assembly 32 includes a transmission shaft 321 and a gear ring 322; the transmission shaft 321 is rotatably set on the base 1, and a rotating gear 3211 is sleeved on the transmission shaft 321; the gear ring 322 is sleeved on the transmission disk 41, and the rotating gear 3211 is meshed and connected with the gear ring 322; a second transmission assembly 33 is provided on the base 1, and the transmission shaft 321 is transmission-connected to the material roller 212 through the second transmission assembly 33.

[0044] The present invention realizes the function of driving the material roller 212 to rotate through the rotary driver 31 through the transmission shaft 321, the rotating gear 3211, the gear ring 322 and the second transmission assembly 33. In the working state, after the controller starts the rotary driver 31, the rotary driver 31 drives the first rotating shaft 111 to rotate through the first bevel gear 112, and the first rotating shaft 111 drives the driving wheel 42 to rotate, and the driving wheel 42 drives the transmission disk 41 and the gear ring 322 to rotate through the transmission belt 43 and the sleeve 411. The gear ring 322 drives the rotating gear 3211 meshed with it to rotate, and the rotating gear 3211 drives the transmission shaft 321 to rotate, and the transmission shaft 321 drives the material roller 212 to rotate through the second transmission assembly 33 to complete the conveying of the plate 5. In the process of the driving wheel 42 driving the transmission disk 41 to rotate through the transmission belt 43, the transmission ratio is adjusted by adjusting the position of the sleeve 411 by the adjustment assembly 44, and then the rotation speed of the material roller 212 is controlled. The cooling time of the plate 5 is adjusted according to the thickness of the plate 5 to avoid deformation or cracking of the plate 5 during the cooling process.

[0045] Reference Figure 3 , Figure 8 and Fig. 9 The second transmission assembly 33 includes a second rotating shaft 331, a second bevel gear 332 and a bevel gear disk 333; the second rotating shaft 331 is rotatably set on the base 1, and the second rotating shaft 331 is transmission-connected with the transmission shaft 321; there are two second bevel gears 332, and the two second bevel gears 332 are both sleeved on the second rotating shaft 331; there are two bevel gear disks 333, the two bevel gear disks 333 are respectively sleeved on the two material rollers 212, and the two bevel gear disks 333 are respectively meshed and connected with the two second bevel gears 332.

[0046] The present invention realizes the function of driving the material roller 212 to rotate through the transmission shaft 321 through the second rotating shaft 331, the second bevel gear 332 and the bevel gear disc 333. The two second bevel gears 332 are both located between the two bevel gear discs 333, and the upper second bevel gear 332 and the second rotating shaft 331 are slidably matched through the keyway. An extension frame is provided on the bearing seat 2121 on the upper material roller 212, and the upper second bevel gear 332 is rotatably arranged on the extension frame. When the mounting frame 211 pulls the bearing seat 2121 and the upper material roller 212 to move through the piston rod of the nitrogen spring 2111, the second bevel gear 332 will be driven to slide on the second rotating shaft 331, so that the second rotating shaft 331 drives the second bevel gear 332 to rotate while not affecting the up and down movement of the second bevel gear 332. The transmission shaft 321 and the second rotating shaft 331 are connected through a pulley and a synchronous belt transmission. Adjacent second rotating shafts 331 are also connected through a pulley and a synchronous belt transmission. When the rotary driver 31 drives the transmission shaft 321 to rotate through the adjustment mechanism 4, the transmission shaft 321 drives the second rotating shaft 331 to rotate through the pulley and the synchronous belt, and the second rotating shaft 331 drives the two second bevel gears 332 to rotate, and the two second bevel gears 332 respectively drive the two bevel gears 333 to rotate, and the two bevel gears 333 respectively drive the two material rollers 212 to rotate, so as to convey the plate 5. In order to ensure that the two material rollers 212 can rotate in the same speed and in opposite directions, the two second bevel gears 332 are arranged between the two bevel gears 333, and then the rotation direction of the two bevel gears 333 is adjusted, and the material rollers 212 of the adjacent conveying assembly 21 are synchronously rotated through the transmission of the second rotating shaft 331, the pulley and the synchronous belt, and then the continuous conveying of the plate 5 is completed.

[0047] Reference Figure 2 and Figure 3 : The lifting assembly 22 includes a screw rod 221, which is rotatably arranged on the base 1, and the mounting frame 211 is threadedly connected to the screw rod 221; the base 1 has a built-in motor for driving the screw rod 221 to rotate.

[0048] The present invention realizes the function of driving the mounting frame 211 to move up and down through the screw rod 221 and the motor. When the thickness of the plate 5 changes and squeezes the material roller 212, the pressure sensor senses the change in the elastic force of the elastic member 2112 and feeds back a signal to the controller. The controller sends a signal to the motor, the motor drives the screw rod 221 to rotate, the screw rod 221 drives the mounting frame 211 threadedly connected thereto to move, the mounting frame 211 drives the transmission ring 441 to move through the vertical rod 2113 and the connecting ring 2114, the transmission ring 441 pushes or pulls the sleeve 411 to move through the connecting rod 442, and adjusts the rotation speed of the material roller 212.

[0049] Reference Figure 1 , Figure 2 and Fig.10: A stand 12 is provided on the base 1, and an infrared thermometer 121 for detecting the surface temperature of the plate 5 is provided on the stand 12.

[0050] The present invention realizes the function of detecting the surface temperature of the plate 5 at a specified position through the stand 12 and the infrared thermometer 121. There are multiple stands 12, and each stand 12 is provided with an infrared thermometer 121, and the multiple stands 12 are equidistantly distributed along the conveying direction. The cooling condition of the plate 5 in each area is detected by the infrared thermometers 121 on the multiple stands 12. When the cooling condition is abnormal, such as the cooling speed is too fast or insufficient, the controller sends a signal to the rotary driver 31 to directly adjust the output speed of the rotary driver 31, so as to avoid the problem of excessive error between the cooling efficiency and the cooling efficiency required by the plate 5 due to the insufficient sensitivity of the adjustment mechanism 4.

[0051] Reference Figure 1-Figure 4 : A cooling method for a polycarbonate sheet, comprising the following steps: S1, conveying the plate 5 through the conveying component 21, and detecting the thickness of the plate 5 during conveying; S2. The transmission ratio of the first transmission assembly 32 is adjusted by the adjusting mechanism 4, and the rotary driver 31 is started to cool the plate 5 step by step during the conveying process.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A cooling device for a polycarbonate plate, characterized in that: It comprises a base (1), a conveying device (2) for conveying a plate (5), a driving device (3) for driving the conveying device (2), and an adjusting mechanism (4); The conveying device (2) and the driving device (3) are respectively arranged on the base (1), and the conveying device (2) comprises a conveying component (21) capable of detecting the thickness of the plate (5); The driving device (3) comprises a rotary driver (31) and a first transmission assembly (32), wherein a driving end of the rotary driver (31) is transmission-connected to the conveying assembly (21) via the first transmission assembly (32); The adjustment mechanism (4) is used to adjust the transmission ratio of the first transmission assembly (32).

2. A cooling device for a polycarbonate plate according to claim 1, characterized in that: The conveying assembly (21) comprises a mounting frame (211) and two material rollers (212) distributed vertically up and down, and each material roller (212) is provided with a bearing seat (2121) for supporting the material roller (212) at both ends; The bearing seat (2121) of the upper material roller (212) is arranged on the base (1); The mounting frame (211) is arranged on the base (1), and a nitrogen spring (2111) is arranged on the mounting frame (211), and a piston rod of the nitrogen spring (2111) is connected to a bearing seat (2121) of an upper material roller (212).

3. A cooling device for a polycarbonate plate according to claim 2, characterized in that: The adjustment mechanism (4) comprises a transmission disc (41), a driving wheel (42), a transmission belt (43) and an adjustment component (44); The transmission disc (41) is transmission-connected to the conveying assembly (21), and the transmission disc (41) is provided with at least three sleeves (411) capable of sliding radially along the transmission disc (41); The driving wheel (42) is drivingly connected to the rotary driver (31), and the driving belt (43) is straddled between the driving wheel (42) and the sleeve (411); The adjustment assembly (44) is used to control the sliding of the sleeve (411).

4. A cooling device for a polycarbonate plate according to claim 3, characterized in that: A lifting assembly (22) for controlling the lifting of the mounting frame (211) is provided on the base (1), and an elastic member (2112) is sleeved on the piston rod of the nitrogen spring (2111), and a pressure sensor is provided between the piston rod and the elastic member (2112).

5. A cooling device for a polycarbonate plate according to claim 3, characterized in that: The adjustment assembly (44) comprises a transmission ring (441) and a connecting rod (442); The transmission ring (441) is arranged on the base (1) in a manner that it can be lifted and lowered, and the transmission ring (441) is in transmission connection with the mounting frame (211); Two ends of the connecting rod (442) are respectively hinged to a hinge seat (4421), and the connecting rod (442) is respectively connected to the transmission ring (441) and the sleeve (411) through the hinge seat (4421).

6. A cooling device for a polycarbonate plate according to claim 3, characterized in that: The first transmission assembly (32) comprises a transmission shaft (321) and a gear ring (322); The transmission shaft (321) is rotatably disposed on the base (1), and a rotating gear (3211) is sleeved on the transmission shaft (321); The gear ring (322) is sleeved on the transmission plate (41), and the rotating gear (3211) is meshedly connected with the gear ring (322); A second transmission assembly (33) is provided on the base (1), and the transmission shaft (321) is transmission-connected to the material roller (212) via the second transmission assembly (33).

7. A cooling device for a polycarbonate plate according to claim 6, characterized in that: The second transmission assembly (33) comprises a second rotating shaft (331), a second bevel gear (332) and a bevel gear disc (333); The second rotating shaft (331) is rotatably disposed on the base (1), and the second rotating shaft (331) is transmission-connected to the transmission shaft (321); Two second bevel gears (332) are provided, and the two second bevel gears (332) are both sleeved on the second rotating shaft (331); Two bevel gear discs (333) are provided, the two bevel gear discs (333) are respectively sleeved on the two material rollers (212), and the two bevel gear discs (333) are respectively meshed and connected with the two second bevel gears (332).

8. A cooling device for a polycarbonate plate according to claim 4, characterized in that: The lifting assembly (22) comprises a screw rod (221), the screw rod (221) is rotatably disposed on the base (1), and the mounting frame (211) is threadedly connected to the screw rod (221); The base (1) has a built-in motor for driving the screw rod (221) to rotate.

9. A cooling device for a polycarbonate plate according to claim 1, characterized in that: A stand (12) is provided on the base (1), and an infrared thermometer (121) for detecting the surface temperature of the plate (5) is provided on the stand (12).

10. A method for cooling a polycarbonate plate, using a cooling device for a polycarbonate plate as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, conveying the plate (5) through the conveying component (21), and detecting the thickness of the plate (5) during conveying; S2. The transmission ratio of the first transmission assembly (32) is adjusted by means of the adjustment mechanism (4), and the rotary drive (31) is started to cool the plate (5) during the conveying process.

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