CN213006179U - A segmentation heating system for plastics calendering roller - Google Patents
A segmentation heating system for plastics calendering roller Download PDFInfo
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- CN213006179U CN213006179U CN202021831230.XU CN202021831230U CN213006179U CN 213006179 U CN213006179 U CN 213006179U CN 202021831230 U CN202021831230 U CN 202021831230U CN 213006179 U CN213006179 U CN 213006179U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 251
- 238000003490 calendering Methods 0.000 title claims abstract description 115
- 239000004033 plastic Substances 0.000 title claims abstract description 43
- 229920003023 plastic Polymers 0.000 title claims abstract description 43
- 230000011218 segmentation Effects 0.000 title description 6
- 230000005674 electromagnetic induction Effects 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 20
- 230000008569 process Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000000465 moulding Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- 238000009529 body temperature measurement Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model provides a sectional heating system for plastic calendering roller, a plurality of calendering rollers are arranged on the plastic calendering roller, and the roller of the calendering rollers is divided into a plurality of annular heating areas with adjacent sections; the annular heating areas are respectively and independently provided with a heating device and a temperature measuring sensor for measuring the temperature of each section of the annular heating area, the heating devices are connected with a heating control panel, a plurality of heating control panels are arranged, are configured with the heating devices in a set and are connected in a one-to-one correspondence manner through heating electric collecting rings; the temperature measuring sensor is connected with the temperature controller through a temperature measuring signal collecting ring, and the heating control panel is connected with the temperature controller through a signal wire. The utility model discloses not only improve the control of plastics calender roll temperature effectively, the difference in temperature control with both ends in the middle of the calender roll is within the scope of requirement moreover, the problem that appears three highs two low when having solved plastics calender equipment production membrane (piece).
Description
Technical Field
The utility model relates to a calendering roller field specifically relates to a segmentation heating system for plastics calendering roller.
Background
The plastic calendering process is one widely used mode for producing plastic film (sheet). The thermoplastic plastic is extruded from the gap between two calender rolls of the plastic calender to form a thin sheet (film) with uniform thickness, as shown in fig. 1 and fig. 2 (101 is raw material, 102 is calender roll, and 103 is finished product in fig. 1 and fig. 2). When the calendering roller works, the calendering roller bears a large separating force, the separating force enables the calendering roller to generate flexural deformation like a planted beam, and the deformation value is expanded from the middle point of the roller axis at the maximum deflection position to two ends and gradually reduced, so that the phenomenon that the middle of the calendered film is thick and two sides of the calendered film are thin in the transverse direction is caused. In order to overcome the phenomenon of nonuniform transverse thickness of a rolled film caused by roller deformation, the rigidity of the roller is improved from the aspects of material selection, structural design and the like, and roller deflection compensation measures such as a 'middle-high method', 'shaft crossing method' and a 'prestress method' can be adopted during the design of a calender to theoretically solve the phenomenon of deflection deformation.
However, the traditional calendering roller is heated transversely, the temperature difference existing in the axial direction of the roller during operation is affected by the cooling of lubricating oil at the bearing positions at the two sides of the roller and the fact that the roller is not coated, and the two ends of the roller are easier to dissipate heat than the middle part, so that the two ends of a calendering roller processing area are inconsistent with the middle temperature, the temperature of the center of the roller is high, and the temperatures of the two sides are low, as shown in fig. 2. Because the deviation of the temperature affects the stability of the plastic processing, the following problems are caused: (1) because the two ends of the roller are easier to radiate heat than the middle part, the temperature at the two ends of the roller is lower than that at the middle part, and the radial thermal expansion amount of the low-temperature area on the roller is small, the axial roller gap value is greatly changed, and the thickness of the two sides of the film in the transverse direction is increased; meanwhile, when the film (sheet) is stripped and stretched, the part of the calendering roller with high temperature is drawn and thinned, and the phenomenon of thick edge of the plastic film (sheet) in the calendering process can also be caused; (2) because the material in the roller gap of the calender moves, the material with high temperature moves towards the material with low temperature, and the flow pattern phenomenon on the surface of the sheet is generated; (3) causing fatal defects of three high and two low (two sides and equal high) of rolled plastic film (sheet) products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defect among the prior art, the utility model aims at providing a segmentation heating system for plastics calendering roller, the utility model discloses fall into a plurality of regions with the calendering roller from the centre to the calendering roller both ends, carry out independent temperature heating and control respectively, carry out the segmentation heating, not only improve the control of plastics calendering roller temperature effectively, in addition the difference in temperature control with both ends in the middle of the calendering roller within the scope of requirement, solved the problem of the three high two low that plastics calendering membrane (piece) goods machine equipment can't solve always.
According to one aspect of the utility model, a sectional heating system for plastic calendering rollers is provided, a plurality of calendering rollers (1) are arranged on the plastic calendering roller, and a plurality of annular heating areas (2) with adjacent sections are separated on the roller of the calendering rollers (1); the annular heating areas (2) are respectively and independently provided with a heating device (3) and a temperature measuring sensor (4) for measuring the temperature of each section of the annular heating area (2), the heating devices (3) are connected with a heating control board (8), a plurality of heating control boards (8) are arranged, are configured with the heating devices (3) in a set and are connected with the heating electric collecting rings (5) in a one-to-one corresponding mode; the temperature measuring sensor (4) is connected with the temperature controller (7) through a temperature measuring signal collecting ring (6), and the heating control panel (8) and the temperature controller (7) are arranged in the heating control cabinet and are connected through a signal line.
The heating and temperature measuring devices of each section of the annular heating area (2) are respectively configured into a set independently, each set of heating and temperature measuring device comprises a heating device (3), a temperature measuring sensor (4), a temperature controller (7) and a heating control panel (8), and the rotating calendering roller is electrically connected with a fixed control cabinet through a heating electric collecting ring (5) and a temperature measuring signal collecting ring (6); install heating device (3) on the calendering roller of rotatory running state and be connected through each passageway and heating control panel (8) of heating electricity collecting ring (5) and form the control closed loop, temperature measurement sensor (4) are connected with temperature controller (7) through each passageway and the formation control closed loop of temperature measurement signal collecting ring (6), accomplish rotatory/fixed connection conversion through the collecting ring, realize electrical connection, and signal communication in the system can select to pass through wireless transmission communication or light signal transmission communication, and transmission mode is various, can be nimble changeable according to the in-service use condition, satisfies multiple user demand, and the practicality is strong.
Preferably, the heating device (3) is an electric heating device or an electromagnetic induction heating device. The electric heating device is simple and convenient to heat, and the electromagnetic induction heating device has the advantages of long service life and stable and reliable operation.
In order to achieve the above object, the present invention further provides a control method for a sectional heating system of a plastic calender roll, comprising the following steps:
step one, the heating control panel (8) provides power for the heating device (3) through the heating electric collecting ring (5), and each section of annular heating area (2) of each calendering roller (1) of the plastic calender starts to be heated;
secondly, the temperature measuring sensors (4) respectively acquire the actual temperature of each section of the annular heating area (2), and transmit temperature signals to the temperature controller (7) through the temperature measuring signal collecting rings (6);
reading the received temperature signal by the temperature controller (7), comparing and analyzing the identified actual temperature of each section of annular heating area (2) on each calendering roller (1) with the preset temperature, and sending a heating adjustment instruction to the heating control board (8) through control operation according to the actual temperature value and the temperature change condition;
fourthly, the heating control panel (8) controls the heating device (3) to adjust the heating electric power of the corresponding annular heating area (2) through the heating electric collecting ring (5) according to the heating adjustment instruction, and the corresponding annular heating area (2) performs corresponding temperature adjustment;
and step five, re-detecting and starting the next cycle.
Preferably, the heating adjustment instruction is:
when the actual temperature of the annular heating area (2) on each calendering roller (1) is lower than the preset temperature, the temperature controller (7) sends a command of increasing the heating electric power to a heating control board (8) connected with the heating device (3) in the annular heating area (2), and the corresponding annular heating area (2) is heated and heated;
when the actual temperature of the annular heating area (2) on each calendering roller (1) is higher than the preset temperature, the temperature controller (7) sends a command of reducing heating electric power to a heating control board (8) connected with a heating device (3) in the annular heating area (2), and the corresponding annular heating area (2) is cooled;
when the actual temperature of the annular heating area (2) on each calendering roller (1) is equal to the preset temperature, the temperature controller (7) sends a command for maintaining the current heating electric power to a heating control board (8) connected with the heating device (3) in the annular heating area (2), and the corresponding annular heating area (2) maintains the current temperature.
Preferably, the preset temperature of each section of the annular heating area (2) on the calendering roll (1) is in a curvilinearly descending trend from the annular heating area (2) in the middle of the calendering roll (1) to the annular heating areas (2) at two ends of the calendering roll (1). Namely, the preset temperature of the annular heating area (2) in the middle of the calendering roll (1) is higher than the preset temperature of the annular heating areas (2) at the two ends of the calendering roll (1). Because the material in the roller clearance of film (piece) in the calendering molding process constantly rolls over from the centre of roller and flows to roller both ends, and the material in the middle of the roller is thick promptly, the thin at both ends, therefore the heating region is the curvilinearly decline from the middle of roller to the both ends difference in temperature, can thoroughly solve the uneven problem of film (piece) lateral thickness. And the section that three high appear in the roller in the calendering molding process, can set up the preset temperature that increases this section in the temperature controller, control heating device and raise the temperature of this heating zone, in the section of two low, reduce the preset temperature of this section, control heating device and reduce the temperature of this heating zone, make the film (sheet) of the section that the roller temperature rises in the calendering molding process thin, the film (sheet) of the section that the temperature reduces thickens, thus has solved the uneven problem of lateral thickness of film (sheet) thoroughly.
Preferably, the preset temperatures of the symmetrical annular heating areas (2) at the two ends of the calendering roller (1) are the same. Because the symmetric areas at the left and right ends of the calendering roller are affected by the lubricating oil in the bearing in the same way, and the materials in the roller gap of the film (sheet) in the calendering molding process continuously roll from the middle of the roller to flow to the two ends of the roller, the temperatures of the symmetric areas at the left and right ends of the roller are generally the same, and can be adjusted simultaneously when adjusting the temperatures, so that the signal line or the communication channel for connecting the electromagnetic wire and the controller can be reduced, and the cost is reduced.
The working principle is as follows: each section of annular heating area of each calendering roller on the plastic calender is independently heated and independently temperature-measured, and if 1 calendering roller is divided into n sections of annular heating areas, n heating devices and n temperature-measuring sensors are arranged on the calendering roller, and n pairs of heating connecting wires, n temperature-measuring signal wires and collecting ring channels with the same number as the heating connecting wires and the temperature-measuring signal wires are arranged on the calendering roller; the temperature measurement signal collecting ring is used for transmitting a temperature signal measured on the calendering roller in a rotating working state to a temperature controller arranged in a heating control cabinet, and the temperature controller carries out analysis operation on the received measured temperature and sends a heating adjustment instruction to the annular heating areas of the respective sections; the heating control panel adjusts the heating power of the heating devices of each section according to the heating adjustment instruction, and controls the temperature of the annular heating area of the corresponding section; the heating electric collecting ring transmits the heating electric energy output by the heating control panel to the heating device on the rotating calendering roller, and controls the corresponding annular heating area to carry out corresponding temperature adjustment.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model relates to a sectional heating system for plastics calendering roller has improved the whole heating method of traditional calendering roller, divide into a plurality of sections the processing region of calendering roller, and each section independently heats and control, be different from the conventional heating of calendering roller (calendering roller conventional heating is that whole strip calendering roller only has one set of heating device, carry out the bulk heating to the calendering roller, can't solve the inhomogeneous problem of calendering roller roll surface middle and both ends temperature), control respectively through the temperature in the middle of the pair of roll surface and both ends, thereby solved the inhomogeneous problem of the temperature in each region of roll surface;
(2) the utility model relates to a sectional heating system for plastics calender roll carries out the sectional heating, can improve the control of plastics calender roll temperature effectively, and the position temperature setting that the sheet is thick is high, and the position temperature setting that is thin is low, and the difference in temperature control of the middle of the calender roll and both ends is within the scope of requirement for the processing temperature of whole calendering roll all can keep unanimous, has not only solved the problem of the flow line of one side, has solved the problem of three high two low that plastics calender equipment can't solve always;
(3) the utility model relates to a sectional heating system for plastics calendering roller separates into the adjacent annular heating region in a plurality of sections on the roller, carries out longitudinal heating, and the temperature of each section on whole roller can be controlled more conveniently for traditional horizontal heating, has guaranteed calendering roller processing area's both ends and the uniformity of intermediate temperature;
(4) the utility model relates to a sectional heating system for plastic calendering roller, which has simple system, smart design and obvious effect;
(5) the utility model relates to a sectional heating system for plastics calendering roller, heating device adopt electric heater unit or electromagnetic induction heating device, and are more energy-conserving, and for the calendering roller that adopts the conduction oil to heat, its energy consumption can reduce 40%, and adopt the electric energy, also give for clean, have avoided the pollution of conduction oil to the plastic products;
(6) the utility model relates to a sectional heating system for plastics calendering roller, easily processing and assembly, the operation is reliable and stable, convenient operation, and is with low costs, and the practicality is strong, is fit for promoting on a large scale.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of a plastic calender roll;
FIG. 2 is a schematic view of the processing of a plastic calender roll;
FIG. 3 is a schematic view of the temperature distribution in the processing zone of the plastic calender rolls;
FIG. 4 is a schematic structural diagram of a calendering roller in a sectional heating system for a plastic calendering roller according to the present invention;
FIG. 5 is a schematic view of the assembly connection of the sectional heating system for the plastic calender roll of the present invention;
fig. 6 is a schematic curve comparison diagram of the thickness of a product manufactured by a traditional heating mode and a sectional heating system of the invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
The embodiment provides a sectional heating system for a plastic calendering roller, and the assembly connection schematic diagram is shown in the attached figure 4: a plurality of calendering rollers 1 are arranged on the plastic calender, and the roller of each calendering roller 1 is divided into a plurality of annular heating areas 2 with adjacent sections (the structure of each annular heating area is shown in a detailed figure 3); the annular heating areas 2 are respectively and independently provided with a heating device 3 and a temperature measuring sensor 4 for measuring the temperature of each section of the annular heating area 2, the heating devices 3 are connected with a heating control board 8, and a plurality of heating control boards 8 are arranged, are configured in a set with the heating devices 3 and are connected in a one-to-one correspondence manner through heating electric collecting rings 5; the temperature measuring sensor 4 is connected with the temperature controller 7 through the temperature measuring signal collecting ring 6, and the heating control panel 8 and the temperature controller 7 are arranged in the heating control cabinet and are connected through a signal wire.
The heating and temperature measuring devices of each section of the annular heating area 2 are respectively configured into a set independently, each set of heating and temperature measuring device comprises a heating device 3, a temperature measuring sensor 4, a temperature controller 7 and a heating control panel 8, and the rotating calendering roller is electrically connected with a fixed control cabinet through a heating electric collecting ring 5 and a temperature measuring signal collecting ring 6; install heating device 3 on the calendering roller of rotatory running state and be connected with heating control panel 8 through each passageway of heating electricity collecting ring 5 and form the control closed loop, temperature sensor 4 is connected with temperature controller 7 through each passageway of temperature measurement signal collecting ring 6 and is formed the control closed loop, accomplishes rotatory/fixed connection conversion through the collecting ring, realizes electrical connection, and signal communication in the system can select through wireless transmission communication or light signal transmission communication, and transmission mode is various, can be nimble changeable according to the in-service use condition, satisfies multiple user demand, and the practicality is strong.
Further, the heating device 3 is an electric heating device or an electromagnetic induction heating device. The electric heating device is simple and convenient to heat, and the electromagnetic induction heating device has the advantages of long service life and stable and reliable operation.
In a second aspect, the present embodiment further provides a control method for a staged heating system for plastic calendering rolls, comprising the following steps:
step one, the heating control panel 8 provides power for the heating device 3 through the heating electric collecting ring 5, and each section of annular heating area 2 of each calendering roller 1 of the plastic calender starts to be heated;
secondly, the temperature measuring sensor 4 respectively acquires the actual temperature of each section of the annular heating area 2 and transmits a temperature signal to the temperature controller 7 through the temperature measuring signal collecting ring 6;
step three, the temperature controller 7 reads the received temperature signal, compares and analyzes the identified actual temperature of each section of the annular heating area 2 on each calendering roller 1 with the preset temperature, and sends a heating adjustment instruction to the heating control board 8 through control operation according to the actual temperature value and the temperature change condition;
fourthly, the heating control board 8 controls the heating device 3 to adjust the heating electric power of the corresponding annular heating area 2 through the heating electric collecting ring 5 according to the heating adjustment instruction, and the corresponding annular heating area 2 carries out corresponding temperature adjustment;
and step five, re-detecting and starting the next cycle.
Further, the heating adjustment instruction is:
when the actual temperature of the annular heating area 2 on each calendering roller 1 is lower than the preset temperature, the temperature controller 7 sends an instruction for increasing the heating electric power to a heating control board 8 connected with the heating device 3 in the annular heating area 2, and the corresponding annular heating area 2 is heated and heated;
when the actual temperature of the annular heating area 2 on each calendering roller 1 is higher than the preset temperature, the temperature controller 7 sends a command of reducing heating electric power to a heating control board 8 connected with the heating device 3 in the annular heating area 2, and the corresponding annular heating area 2 is cooled;
when the actual temperature of the annular heating area 2 on each calendering roller 1 is equal to the preset temperature, the temperature controller 7 sends an instruction for maintaining the current heating electric power to the heating control board 8 connected with the heating device 3 in the annular heating area 2, and the corresponding annular heating area 2 maintains the current temperature.
Furthermore, the preset temperature of each section of the annular heating area 2 on the calendering roll 1 is in a curvilinearly descending trend from the annular heating area 2 in the middle of the calendering roll 1 to the annular heating areas 2 at the two ends of the calendering roll 1. Namely, the preset temperature of the annular heating area 2 in the middle of the calendering roll 1 is higher than the preset temperature of the annular heating areas 2 at the two ends of the calendering roll 1. Because the material in the roller clearance of film (piece) in the calendering molding process constantly rolls over from the centre of roller and flows to roller both ends, and the material in the middle of the roller is thick promptly, the thin at both ends, therefore the heating region is the curvilinearly decline from the middle of roller to the both ends difference in temperature, can thoroughly solve the uneven problem of film (piece) lateral thickness. And the section that three high appear in the roller in the calendering molding process, can set up the preset temperature that increases this section in the temperature controller, control heating device and raise the temperature of this heating zone, in the section of two low, reduce the preset temperature of this section, control heating device and reduce the temperature of this heating zone, make the film (sheet) of the section that the roller temperature rises in the calendering molding process thin, the film (sheet) of the section that the temperature reduces thickens, thus has solved the uneven problem of lateral thickness of film (sheet) thoroughly.
Further, the preset temperatures of the symmetrical annular heating areas 2 at the two ends of the calendering roller 1 are the same. Because the symmetric areas at the left and right ends of the calendering roller are affected by the lubricating oil in the bearing in the same way, and the materials in the roller gap of the film (sheet) in the calendering molding process continuously roll from the middle of the roller to flow to the two ends of the roller, the temperatures of the symmetric areas at the left and right ends of the roller are generally the same, and can be adjusted simultaneously when adjusting the temperatures, so that the signal line or the communication channel for connecting the electromagnetic wire and the controller can be reduced, and the cost is reduced.
The working principle is as follows: each section of annular heating area of each calendering roller on the plastic calender is independently heated and independently temperature-measured, and if 1 calendering roller is divided into n sections of annular heating areas, n heating devices and n temperature-measuring sensors are arranged on the calendering roller, and n pairs of heating connecting wires, n temperature-measuring signal wires and collecting ring channels with the same number as the heating connecting wires and the temperature-measuring signal wires are arranged on the calendering roller; the temperature measurement signal collecting ring is used for transmitting a temperature signal measured on the calendering roller in a rotating working state to a temperature controller arranged in a heating control cabinet, and the temperature controller carries out analysis operation on the received measured temperature and sends a heating adjustment instruction to the annular heating areas of the respective sections; the heating control panel adjusts the heating power of the heating devices of each section according to the heating adjustment instruction, and controls the temperature of the annular heating area of the corresponding section; the heating electric collecting ring transmits the heating electric energy output by the heating control panel to the heating device on the rotating calendering roller, and controls the corresponding annular heating area to carry out corresponding temperature adjustment.
Through experimental verification, process the utility model discloses a product thickness homogeneity that segmentation heating system made obtains improving, as shown in fig. 5, curve 9 is traditional heating methods and causes the inhomogeneous schematic curve of product thickness because of the roller surface temperature is inhomogeneous, commonly known as "three high two low"; curve 10 is adopted the utility model discloses a temperature schematic curve that sectional heating system carries out sectional control to the temperature of calendering roller roll surface, its section that three high appears in the roller in the calendering shaping process, increases the preset temperature of this section, controls heating device and increases the temperature of this heating region, reduces the preset temperature of this section in the section of two low, controls heating device and reduces the temperature of this heating region, compensates product thickness through adjusting the temperature; curve 11 is for adopting the utility model discloses a thickness of the product that makes after the sectional heating system carries out temperature compensation indicates the curve, can see from curve 11, and film (piece) attenuation in the district section that roller temperature rose in the calendering molding process, film (piece) thickening in the district section that the temperature dropped, the homogeneity of product thickness obtains very big improvement, and the analysis can know the utility model discloses a sectional heating system has thoroughly solved the uneven problem of film (piece) lateral thickness.
The embodiment has the following beneficial effects:
(1) the integral heating mode of the traditional calendering roller is improved, the processing area of the calendering roller is divided into a plurality of sections, each section is independently heated and controlled, and the problem of non-uniform temperature of the middle and two ends of the surface of the calendering roller cannot be solved by integrally heating the calendering roller (the conventional heating of the calendering roller is that the whole calendering roller only has one set of heating device, and the temperature of the middle and two ends of the surface of the calendering roller is respectively controlled), so that the problem of non-uniform temperature of each area of the surface of the calendering roller is solved;
(2) the sectional heating is carried out, the temperature control of the plastic calender roll can be effectively improved, the temperature of the thick part of the sheet is set to be high, the temperature of the thin part of the sheet is set to be low, and the temperature difference between the middle part and the two ends of the calender roll is controlled within the required range, so that the processing temperature of the whole calender roll can be kept consistent, the problem of flow lines on the sheet surface is solved, and the problem of three-high two-low which can not be solved by plastic calender equipment is solved;
(3) the roller is divided into a plurality of annular heating areas with adjacent sections for longitudinal heating, so that the temperature of each section on the whole roller can be more conveniently controlled compared with the traditional transverse heating, and the consistency of the temperatures of two ends and the middle of a calendering roller processing area is ensured;
(4) the system is simple, the design is ingenious, and the effect is obvious;
(5) the heating device adopts an electric heating device or an electromagnetic induction heating device, so that the energy is saved, compared with a calendering roller which adopts heat conduction oil for heating, the energy consumption can be reduced by 40 percent, and the heating device adopts electric energy and is clean, so that the pollution of the heat conduction oil to plastic products is avoided;
(6) the device is easy to process and assemble, stable and reliable in operation, convenient to operate, low in cost, high in practicability and suitable for large-scale popularization.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (2)
1. The sectional heating system for the plastic calendering rollers is characterized in that a plurality of calendering rollers (1) are arranged on the plastic calendering roller, and a roller of each calendering roller (1) is divided into a plurality of annular heating areas (2) with adjacent sections; the annular heating areas (2) are respectively and independently provided with a heating device (3) and a temperature measuring sensor (4) for measuring the temperature of each section of the annular heating area (2), the heating devices (3) are connected with a heating control board (8), a plurality of heating control boards (8) are arranged, are configured with the heating devices (3) in a set and are connected with the heating electric collecting rings (5) in a one-to-one corresponding mode; the temperature measuring sensor (4) is connected with the temperature controller (7) through a temperature measuring signal collecting ring (6), and the heating control panel (8) and the temperature controller (7) are arranged in the heating control cabinet and are connected through a signal line.
2. The staged heating system for plastic calendering rolls according to claim 1, wherein the heating device (3) is an electric heating device or an electromagnetic induction heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021831230.XU CN213006179U (en) | 2020-08-28 | 2020-08-28 | A segmentation heating system for plastics calendering roller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021831230.XU CN213006179U (en) | 2020-08-28 | 2020-08-28 | A segmentation heating system for plastics calendering roller |
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| CN213006179U true CN213006179U (en) | 2021-04-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890619A (en) * | 2020-08-28 | 2020-11-06 | 上海友浦塑胶有限公司 | Sectional heating system for plastic calendering roller and control method thereof |
| CN115230244A (en) * | 2022-05-11 | 2022-10-25 | 株洲时代华先材料科技有限公司 | Roller type hot-pressing device and hot-pressing process thereof |
-
2020
- 2020-08-28 CN CN202021831230.XU patent/CN213006179U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890619A (en) * | 2020-08-28 | 2020-11-06 | 上海友浦塑胶有限公司 | Sectional heating system for plastic calendering roller and control method thereof |
| CN115230244A (en) * | 2022-05-11 | 2022-10-25 | 株洲时代华先材料科技有限公司 | Roller type hot-pressing device and hot-pressing process thereof |
| CN115230244B (en) * | 2022-05-11 | 2023-10-13 | 株洲时代华先材料科技有限公司 | Roller type hot pressing device and hot pressing process thereof |
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Effective date of registration: 20231106 Address after: No. 86, Industrial Avenue, Lai'an Economic Development Zone, Chuzhou, Anhui 239200 Patentee after: Anhui Youpu New Material Technology Co.,Ltd. Address before: 201613 area E, 1st floor, building 1, 128 Zhongchen Road, Songjiang District, Shanghai Patentee before: SHANGHAI YOUPU PLASTIC Co.,Ltd. |
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