Temperature control device for calendering roller of calender

Abstract

The utility model discloses a calender roller temperature control device which comprises a shell, calender rollers are installed on the upper side and the lower side of the interior of the shell, a cooling box is arranged on the front side face of the shell, cooling rollers which are evenly distributed are rotationally connected to the upper side of the interior of the cooling box, and the calender roller temperature control device further comprises an adjusting mechanism. The adjusting mechanism comprises a water tank, a water storage tank, a backflow pipe, a temperature sensor, a first pump machine, a second pump machine, a spraying row pipe and a spraying head, the water tank is arranged in the cooling box, the water storage tank is arranged on the bottom wall of the cooling box, a water outlet of the water tank is communicated with a water inlet of the water storage tank through the backflow pipe, and the temperature sensor is connected to the front portion of the outer surface of the backflow pipe in series; according to the temperature control device for the calendering roller of the calender, the surface temperature of the cooling roller is controlled not to be too high through the adjusting mechanism, the situation that finished products are unqualified due to the fact that calendered plastic is damaged by the cooling roller with the too high temperature is avoided, and resources are saved.

Description

Technical Field

[0001] This utility model relates to the field of preservation technology for pharmaceutical capsules, specifically to a temperature control device for calender rolls in a calendering machine. Background Technology

[0002] Pharmaceutical capsules are usually sealed and preserved in a plastic (PVC) shell. In order to make the plastic shell reach the required thickness, a calender is usually used. The calender consists of two or more rollers arranged in a certain pattern. Under a certain temperature, the plastic (PVC) is pressed and stretched into a film of a certain thickness and surface shape.

[0003] In the operation of existing calenders, workers typically feed plastic between two calendering rollers and then drive the two calendering rollers to rotate. When the plastic passes through the gap between the two calendering rollers rotating in opposite directions, it is subjected to shear force and tensile stress simultaneously, thereby stretching it to a suitable thickness. The finished product is then cooled in a cooling box.

[0004] Existing calenders have the following problems: After the calender has been working for a period of time, the surface temperature of the cooling rollers in the cooling box will rise. The excessively high temperature of the cooling rollers will damage the calendered plastic, resulting in unqualified finished products and waste of resources. To address this, we propose a calender roller temperature control device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a temperature control device for calender rolls of a calender. By adjusting the mechanism, the surface temperature of the cooling roll is controlled to prevent it from becoming too high, thus avoiding the situation where the calendered plastic is damaged by the excessively hot cooling roll, resulting in unqualified finished products. This saves resources and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a calender roll temperature control device, including a housing, calender rolls are installed on both the upper and lower sides inside the housing, a cooling box is provided on the front side of the housing, and cooling rolls are rotatably connected to the upper side inside the cooling box, and an adjustment mechanism is also included.

[0007] Adjustment mechanism: It includes a water tank, a water storage tank, a return pipe, a temperature sensor, a first pump, a second pump, a spray pipe, and nozzles. The cooling box has a water tank inside, and a water storage tank is located on the bottom wall of the cooling box. The drain outlet of the water tank and the inlet of the water storage tank are connected through the return pipe. A temperature sensor is connected in series on the front of the outer surface of the return pipe, and the probe end of the temperature sensor is inserted into the inside of the return pipe. A first pump is connected in series on the rear of the outer surface of the return pipe. A spray pipe is located at the outlet of the water storage tank, and a second pump is connected in series on the middle of the outer surface of the spray pipe. Nozzles are provided at the spray nozzles of the spray pipe. The adjustment mechanism controls the surface temperature of the cooling roller to prevent it from becoming too high, avoiding damage to the calendered plastic caused by the overheated cooling roller, which could lead to unqualified finished products and save resources.

[0008] Furthermore, it also includes a microcontroller, which is fixedly connected to the front side of the housing. The input terminal of the microcontroller is electrically connected to an external power source. The input terminals of pump one and pump two are respectively electrically connected to the output terminal of the microcontroller. The temperature sensor is bidirectionally electrically connected to the microcontroller to facilitate the normal operation of the control device.

[0009] Furthermore, the regulating mechanism also includes a cooling box, the bottom wall of which is equipped with a cooling box, and the middle part of the return pipe is located inside the cooling box. The return pipe inside the cooling box is S-shaped to facilitate the cooling of the coolant.

[0010] Furthermore, the upper and lower sides of the inner shell are rotatably connected to a rotating shaft, and a calendering roller is fixedly sleeved on the outer surface of the rotating shaft. The right end of the rotating shaft passes through the side wall of the shell and is equipped with a gear. The two gears are meshed and connected to facilitate the rotation of the two calendering rollers in opposite directions.

[0011] Furthermore, a motor is installed inside the housing. The right end of the output shaft of the motor is fixedly connected to the left end of the upper rotating shaft. The input end of the motor is electrically connected to the output end of the microcontroller to provide driving force.

[0012] Furthermore, a protective cover is provided in the middle of the upper surface of the outer shell, and glass observation windows are provided in the installation openings on the front and rear sides of the protective cover to prevent dust from entering and to facilitate observation of the rolling process.

[0013] Furthermore, a support is provided on the rear side of the cooling box, and a winding roller is rotatably connected to the rear side of the upper surface of the support via a rotating rod. A second motor is provided on the left side of the support, and the right end of the output shaft of the second motor is fixedly connected to the left end of the rotating rod. The input end of the second motor is electrically connected to the output end of the microcontroller, which facilitates the traction and winding of the finished product.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This calender roll temperature control device has the following advantages:

[0015] Pump 2 draws coolant from the water tank and sprays it onto the outer surface of the cooling roller through the spray nozzles to cool it down. Pump 1 returns the used coolant from the water tank to the water tank through the return pipe. When the temperature sensor detects that the temperature of the returned coolant is too high, it controls Pump 2 to increase the flow rate of coolant to spray the cooling roller and cool it down, so that the surface temperature of the cooling roller does not become too high. By adjusting the pumping efficiency of Pump 2, the flow rate of coolant is controlled, thereby controlling the temperature of the cooling roller. This avoids the situation where the calendered plastic is damaged by the excessively hot cooling roller, resulting in unqualified finished products, thus saving resources. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cooling box of this utility model;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the cooling box of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the outer shell of this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the outer shell of this utility model.

[0021] In the diagram: 1. Outer casing; 2. Microcontroller; 3. Adjustment mechanism; 31. Water tank; 32. Water storage tank; 33. Return pipe; 34. Temperature sensor; 35. Pump I; 36. Cooling box; 37. Pump II; 38. Spray pipe; 39. Spray head; 4. Rotary shaft; 5. Calendering roller; 6. Gear; 7. Motor I; 8. Dust cover; 9. Glass observation window; 10. Cooling box; 11. Cooling roller; 12. Support; 13. Take-up roller; 14. Motor II. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5This embodiment provides a technical solution: a calender roll temperature control device, including a housing 1, with calender rolls 5 installed on both the upper and lower sides inside the housing 1, a cooling box 10 on the front side of the housing 1, and uniformly distributed cooling rollers 11 rotatably connected to the upper side inside the cooling box 10. It also includes an adjustment mechanism 3 and a microcontroller 2, which is fixedly connected to the front side of the housing 1. The input terminal of the microcontroller 2 is electrically connected to an external power source. Rotary shafts 4 are rotatably connected to both the upper and lower sides inside the housing 1, with calender rolls 5 fixedly fitted onto the outer surface of each rotating shaft 4. Gears are provided at the right end of each rotating shaft 4, passing through the side wall of the housing 1. 6. Two gears 6 mesh with each other. A motor 7 is installed inside the outer casing 1. The right end of the output shaft of motor 7 is fixedly connected to the left end of the upper rotating shaft 4. The input end of motor 7 is electrically connected to the output end of the microcontroller 2. A protective cover 8 is provided in the middle of the upper surface of the outer casing 1. Glass observation windows 9 are provided in the mounting openings on both the front and rear sides of the protective cover 8. A bracket 12 is provided on the rear side of the cooling box 10. A winding roller 13 is rotatably connected to the rear side of the upper surface of the bracket 12 via a rotating rod. (An electrostatic eliminator is provided on the front side of the upper surface of the bracket 12, located between the cooling box 10 and the winding roller 13.) The input end of the motor is electrically connected to the output end of the microcontroller 2. A second motor 14 is located on the left side of the bracket 12. The right end of the output shaft of the second motor 14 is fixedly connected to the left end of the rotating rod. The input end of the second motor 14 is electrically connected to the output end of the microcontroller 2. The operator feeds plastic through the feed inlet on the front side of the dust cover 8 between the two calendering rollers 5. Then, the microcontroller 2 is operated to turn on the first motor 7. The output shaft of the first motor 7 drives the upper rotating shaft 4 to rotate. The rotation of the upper rotating shaft 4 drives the upper gear 6 to rotate. Through the meshing of the two gears 6, the upper rotating shaft 4 drives the lower rotating shaft 4 to rotate, and the two rotating shafts 4 rotate in the same direction. Conversely, the rotation of the shaft 4 causes the two calendering rollers 5 to rotate in opposite directions. When the plastic passes through the gap between the two calendering rollers 5 rotating in opposite directions, it will be subjected to shear force and tensile stress simultaneously, thus stretching to a suitable thickness. The staff can observe the calendering process through the glass observation window 9. The calendered finished product is passed through the cooling rollers 11 that are staggered in the cooling box 10. Then, static electricity is eliminated by the static eliminator. Finally, it is fixed to the outer surface of the take-up roller 13. Then, the motor 14 is turned on. The output shaft of the motor 14 drives the take-up roller 13 to rotate, thereby pulling and winding the finished product.

[0024] Adjustment mechanism 3 includes a water tank 31, a water storage tank 32, a return pipe 33, a temperature sensor 34, a first pump 35, a second pump 37, a spray pipe 38, and a nozzle 39. The cooling box 10 has a water tank 31 inside, and a water storage tank 32 is located on the bottom wall of the cooling box 10. The drain outlet of the water tank 31 and the inlet of the water storage tank 32 are connected via the return pipe 33. A temperature sensor 34 is connected in series at the front of the outer surface of the return pipe 33, and the sensing end of the temperature sensor 34 is inserted into the interior of the return pipe 33. A first pump 35 is connected in series at the rear of the outer surface of the return pipe 33. A spray pipe 38 is provided at the outlet of the water tank 32. A second pump 37 is connected in series in the middle of the outer surface of the spray pipe 38. Each spray nozzle 39 is provided at the spray outlet of the spray pipe 38. The input terminals of the first pump 35 and the second pump 37 are electrically connected to the output terminals of the microcontroller 2. The temperature sensor 34 is bidirectionally electrically connected to the microcontroller 2. The regulating mechanism 3 also includes a cooling box 36. The bottom wall of the cooling box 10 is equipped with a cooling box 36. The middle part of the return pipe 33 is located inside the cooling box 36. The return pipe 33 inside the cooling box 36 is S-shaped. When the second pump 37 is turned on, the pump... The coolant in the water storage tank 32 is drawn out by pump 37. The coolant reaches the nozzle 39 through the spray pipe 38 and is then sprayed onto the outer surface of the cooling roller 11 to cool it down. The used coolant falls into the water tank 31. Then, pump 35 is turned on, and pump 35 returns the coolant in the water tank 31 to the water storage tank 32 through the return pipe 33. Temperature sensor 34 transmits the temperature of the returned coolant to the display screen of the microcontroller 2. The operator can view the detected data on the display screen. When the coolant flows through the return pipe 33 located in the cooling tank 36, heat is transferred between the coolant and the cooler liquid in the cooling tank 36, thereby reducing the temperature of the returning coolant and facilitating reuse. The cooler liquid in the cooling tank 36 can be replaced at any time. When the temperature of the returning coolant is detected to be too high, the pump 37 is controlled to increase the flow rate of the coolant to spray the cooling roller 11 to cool it down, so that the surface temperature of the cooling roller 11 is not too high. The flow rate of the coolant is controlled by adjusting the pumping efficiency of the pump 37, thereby controlling the temperature of the cooling roller 11.

[0025] The working principle of the calender roll temperature control device provided by this utility model is as follows: The operator feeds plastic into the space between two calender rolls 5 through the feed inlet on the front side of the dust cover 8. Then, the microcontroller 2 activates motor 7. The output shaft of motor 7 drives the upper rotating shaft 4 to rotate. The rotation of the upper rotating shaft 4 drives the upper gear 6 to rotate. Through the meshing of the two gears 6, the upper rotating shaft 4 drives the lower rotating shaft 4 to rotate, and the two rotating shafts 4 rotate in opposite directions. The rotation of the rotating shafts 4 causes the two calender rolls 5 to rotate, and the plastic passes through them. When passing through the gap between two calendering rollers 5 rotating in opposite directions, the product is subjected to both shear force and tensile stress, thus stretching it to a suitable thickness. Workers can observe the calendering process through the glass observation window 9. The calendered product is then passed between the alternating cooling rollers 11 inside the cooling box 10, where static electricity is eliminated by an electrostatic eliminator. Finally, it is fixed to the outer surface of the take-up roller 13. Then, motor 2 14 is turned on, and its output shaft drives the take-up roller 13 to rotate, traction and winding the product. Pump 2 37 is then turned on, and pump 2 37... Coolant is drawn from water tank 32 and flows through spray pipe 38 to nozzle 39. It is then sprayed onto the outer surface of cooling roller 11 to cool it. The used coolant falls into water tank 31. Pump 35 is then turned on, pumping the coolant from water tank 31 back into water tank 32 through return pipe 33. Temperature sensor 34 transmits the monitored temperature of the returning coolant to the display screen of microcontroller 2. Operators view the detected data on the display screen. When the coolant passes through the return pipe 33 located in the cooling tank 36, heat is transferred between the coolant and the cooler liquid in the cooling tank 36, thereby lowering the temperature of the returning coolant and facilitating reuse. The cooler liquid in the cooling tank 36 can be replaced at any time. When the temperature of the returning coolant is detected to be too high, the pump 37 is controlled to increase the flow rate of the coolant to spray the cooling roller 11 to cool it down, so that the surface temperature of the cooling roller 11 is not too high. The flow rate of the coolant is controlled by adjusting the pumping efficiency of the pump 37, thereby controlling the temperature of the cooling roller 11.

[0026] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be an STM32L1, the temperature sensor 34 can be a TMP100NA / 3K, the pump 35 and pump 37 can be ACm centrifugal pumps, the motor 7 and motor 14 can be YP-100 series, and the static eliminator can be a QP-F35A. The microcontroller 2 controls the operation of the temperature sensor 34, pump 35, pump 37, motor 7, motor 14 and static eliminator using methods commonly used in the prior art.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A temperature control device for calender rolls of a calender, comprising a housing (1), wherein calender rolls (5) are installed on both the upper and lower sides inside the housing (1), and a cooling box (10) is provided on the front side of the housing (1), wherein uniformly distributed cooling rolls (11) are rotatably connected to the upper side inside the cooling box (10), characterized in that: It also includes an adjustment mechanism (3); Adjustment mechanism (3): It includes a water tank (31), a water storage tank (32), a return pipe (33), a temperature sensor (34), a first pump (35), a second pump (37), a spray pipe (38), and a nozzle (39). The cooling box (10) is equipped with a water tank (31) inside, and a water storage tank (32) is provided on the bottom wall of the cooling box (10). The drain outlet of the water tank (31) and the inlet of the water storage tank (32) are connected by a return pipe (33). A temperature sensor (34) is connected in series on the front of the outer surface of the return pipe (33), and the detection end of the temperature sensor (34) is inserted into the interior of the return pipe (33). A pump (35) is connected in series on the rear of the outer surface of the return pipe (33). A spray pipe (38) is provided at the outlet of the water storage tank (32). A pump (37) is connected in series on the middle of the outer surface of the spray pipe (38). A nozzle (39) is provided at the spray nozzle of the spray pipe (38).

2. The calender roll temperature control device according to claim 1, characterized in that: It also includes a microcontroller (2), which is fixedly connected to the front side of the housing (1). The input end of the microcontroller (2) is electrically connected to an external power source. The input ends of pump one (35) and pump two (37) are electrically connected to the output end of the microcontroller (2) respectively. The temperature sensor (34) is bidirectionally electrically connected to the microcontroller (2).

3. The calender roll temperature control device according to claim 1, characterized in that: The adjustment mechanism (3) also includes a cooling box (36). The bottom wall of the cooling box (10) is provided with a cooling box (36). The middle part of the return pipe (33) is located inside the cooling box (36). The return pipe (33) located inside the cooling box (36) is S-shaped.

4. The calender roll temperature control device according to claim 2, characterized in that: The upper and lower sides of the inner shell (1) are rotatably connected to a rotating shaft (4). A calendering roller (5) is fixedly sleeved on the outer surface of the rotating shaft (4). A gear (6) is provided at the right end of the rotating shaft (4) through the side wall of the shell (1). The two gears (6) are meshed and connected.

5. The calender roll temperature control device according to claim 4, characterized in that: The housing (1) is equipped with a motor (7). The right end of the output shaft of the motor (7) is fixedly connected to the left end of the upper rotating shaft (4). The input end of the motor (7) is electrically connected to the output end of the microcontroller (2).

6. The calender roll temperature control device according to claim 1, characterized in that: The upper surface of the outer shell (1) is provided with a protective cover (8), and the installation openings on the front and rear sides of the protective cover (8) are provided with glass observation windows (9).

7. The calender roll temperature control device according to claim 2, characterized in that: The cooling box (10) is provided with a bracket (12) on the rear side. The upper surface of the bracket (12) is rotatably connected to a winding roller (13) via a rotating rod. The left side of the bracket (12) is provided with a second motor (14). The right end of the output shaft of the second motor (14) is fixedly connected to the left end of the rotating rod. The input end of the second motor (14) is electrically connected to the output end of the microcontroller (2).

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