CN111873291A - Novel segmentation heating roller and have calender of this structure - Google Patents
Novel segmentation heating roller and have calender of this structure Download PDFInfo
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- CN111873291A CN111873291A CN202010882258.4A CN202010882258A CN111873291A CN 111873291 A CN111873291 A CN 111873291A CN 202010882258 A CN202010882258 A CN 202010882258A CN 111873291 A CN111873291 A CN 111873291A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 79
- 230000011218 segmentation Effects 0.000 title claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 238000003490 calendering Methods 0.000 abstract description 36
- 238000000034 method Methods 0.000 description 19
- 239000000463 material Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 12
- 238000000465 moulding Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention provides a novel sectional heating roller, which comprises a roller core, a left shaft end and a right shaft end, wherein the left shaft end and the right shaft end are arranged at two ends of the roller core, a plurality of mutually parallel grooves are uniformly distributed on the outer wall of the roller core at intervals along the axial direction, the grooves are arranged along the circumferential direction of the roller core and are of a circular ring structure, electromagnetic coils are arranged in the grooves, a roller surface sleeve is sleeved on the outer wall of the roller core, and a threading hole for arranging a power line and/or a signal line is arranged in the middle of the roller. The invention also provides a calender with the structure, wherein the calender is provided with a plurality of rollers, and the electromagnetic coils on the adjacent rollers are arranged in a staggered manner. The invention divides the roller into a plurality of heating areas which can independently control the temperature in the axial direction, solves the problem of uneven temperature in the middle and two ends of the roller surface of the calendering roller, eliminates the phenomenon of three-high two-low transverse thickness of the film (sheet) product and ensures the uniformity of the transverse thickness of the film (sheet).
Description
Technical Field
The invention relates to the field of special-shaped calendering rollers, in particular to a novel sectional heating roller and a calender with the structure.
Background
The film or the hard sheet has the problem of uneven transverse thickness, namely, thickness of the middle part and two sides in the calendering forming process, and the reasons are as follows: 1) the roller is elastically deformed under the separating force of the materials between the rollers in the calendering process; 2) the two sides of the roller are not wrapped by materials and are easy to radiate, and lubricating oil is filled in bearings at the two ends of the roller, so that the oil temperature is lower, the heat at the two ends of the roller is taken away, and the temperature at the two sides of the calendering roller is lower; 3) the prior calendering roller is generally transversely heated (such as a heat conduction oil type calendering roller) and is integrally heated, so that the temperature of a single area of the roller cannot be independently controlled.
There are currently three solutions:
1. medium-high method: aiming at the roller deformation characteristic, the roller of the calender is made into a waist drum-shaped structure (as shown in figure 4) with the middle diameter slightly larger than the two ends in advance, when the processed materials are harder or the products are thinner, the roller with the larger height difference between the middle and the two ends can be selected, and the roller with the smaller height difference between the middle and the two ends can be selected. However, the medium-high method cannot be adjusted randomly according to different product varieties and specifications, and only the roller can be replaced according to the product varieties and specifications.
2. The shaft crossing method comprises the following steps: if the axes of two adjacent rollers of the calender are parallel to each other and are positioned in the same plane, the gap between the two rollers is rectangular under the condition that no load is applied to the rollers, and the roller gap can compensate the influence of the elastic deformation of the rollers on the thickness of a calendered product to a certain degree. However, the method of axis crossing can only be used as an auxiliary method for thickness correction, but cannot be used as a unique solution, and the larger the crossing value is, the more serious the arch-shaped section phenomenon of three high two low (i.e. the phenomenon that the middle and two sides are thick, the near middle area is thin, and the phenomenon is commonly called as three high two low).
3. The prestress method comprises the following steps: the method is that two sides of the roller bearing are provided with an auxiliary bearing, and a hydraulic or mechanical device is used for applying stress to the roller so as to cause the roller to generate bending deformation. But the bending deformation of the roller requires dozens of tons or even hundreds of tons of force, the requirements on the roller material and the quality of the bearing are extremely high, and only Germany and Italian technology is mature at present.
Due to the limitation of roller transverse heating, the phenomenon of three-high two-low transverse thickness of the film (sheet) product still cannot be completely eliminated. The uneven surface temperature of the roller causes uneven thermal expansion of the roller, the thermal expansion of the two ends with lower temperature is small, and the thermal expansion of the middle part of the roller with higher temperature is large, so that the phenomenon that the product is thick at the two ends and thin in the middle can be caused. The combined effect of the above cases is still "three high two low".
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a novel sectional heating roller and a calender with the structure.
According to one aspect of the invention, the novel sectional heating roller comprises a roller core (1), and a left shaft end (2) and a right shaft end (3) which are arranged at two ends of the roller core (1), wherein a plurality of mutually parallel grooves (4) are uniformly distributed on the outer wall of the roller core (1) at intervals along the axial direction, the grooves (4) are arranged along the circumferential direction of the roller core (1) and are of a circular ring structure, an electromagnetic coil (5) is arranged in each groove (4), a roller surface sleeve (6) is sleeved on the outer wall of the roller core (1), and a threading hole (7) for arranging a power line and/or a signal line is arranged in the middle of the roller. The number and the density of the electromagnetic coils are determined according to actual conditions, the higher the density is, the smaller the temperature difference between the heating sections is, the fewer the electromagnetic coils are arranged, and the cost investment is relatively low.
Preferably, the electromagnetic coil (5) is externally connected with a controller to control the working power of the electromagnetic coil (5), and the controller comprises a temperature control module and an electromagnetic heating control module which are connected. The temperature control module is used for ensuring that the temperature is accurate, and the electromagnetic heating control module guarantees that solenoid moves and carries out the instruction that the temperature control module exported, dedicated temperature controller can be chooseed for use to the temperature control module, also can choose for use PLC or industrial computer to add interface and software in addition and realize, and the similar converter of electromagnetic heating control module: the 380V power supply is input, a control signal is input, electricity (a frequency converter) of a driving motor with adjustable frequency is output, and a high-frequency electric driving electromagnetic induction coil (electromagnetic heating) with adjustable power is output.
Preferably, the electromagnetic coil (5) is connected with an external controller through an electric conduction slip ring.
Preferably, temperature sensors for monitoring the temperature of each heating area are arranged in each heating area of the surface of the roller where the electromagnetic coils (5) are laid, and the temperature sensors are connected and communicated with an external controller through a conductive slip ring or a wireless module. The temperature sensor, the controller and the electromagnetic coil are matched to work, so that the temperature of each heating area can be monitored and adjusted in real time, and the problem of uneven transverse thickness of the film (sheet) is thoroughly solved.
Preferably, the controller sets the same working power for the electromagnetic coils (5) which are symmetrically arranged in pairs at the left end and the right end of the roller core (1). Because the symmetric areas at the left and right ends of the roller are affected by the lubricating oil in the bearing in the same way, and the materials in the gaps of the roller in the calendering molding process of the film (sheet) continuously roll from the middle of the roller 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 coil and the controller can be reduced, and the cost is reduced.
Preferably, the electromagnetic coil (5) is externally connected with a power supply to supply power for heating. And the electromagnetic coil (5) is connected with an external power supply through the same power line.
In a second aspect, the invention also provides a calender with the structure, the calender is provided with a plurality of rollers, and the electromagnetic coils (5) on the adjacent rollers are arranged in a staggered mode. The heating zone of two adjacent rollers about staggering promptly, can effectively eliminate the temperature difference of ladder nature (for example in last roller, the material is located between two electromagnetic heating zones, the temperature is lower relatively, and this material flows after adjacent next roller along with the roller rolls, because of the crisscross setting of solenoid on the adjacent roller, this material is in solenoid's heating zone at adjacent next roller, its temperature can promote to go up, so effectively eliminated the temperature difference, avoided the material to be in between solenoid's the heating zone always).
The working principle is as follows: the electromagnetic coils are uniformly distributed on the outer wall of the roller core at intervals along the axial direction, so that the roller is divided into a plurality of heating areas (compared with the integral heating of the traditional roller) which can independently control the temperature in the axial direction (namely the transverse direction), the problem of uneven temperature in the middle and two ends of the roller surface of the calendering roller is solved, the uniformity of the transverse thickness of a film (sheet) is ensured, and the electromagnetic coils on the roller are arranged along the circumferential direction of the roller core and are in a ring-shaped structure, which is equivalent to that each electromagnetic coil independently heats the roller longitudinally, and the circumferential surface of the whole roller can be uniformly heated without temperature difference.
According to the physical characteristics of the plastic polymer material and the phenomena of the calendering molding process, the sectional electromagnetic heating roller aims at the problem of 'three high and two low' of the film (sheet), the working power of the electromagnetic coil is controlled by the controller, so that the temperature of the heating section where the electromagnetic coil is located is controlled, if the roller has the three high section in the calendering molding process, the controller controls and increases the working power of the electromagnetic coil in the section, the temperature of the section of the roller is increased, the working power of the electromagnetic coil in the section is reduced, the temperature of the section of the roller is reduced, the film (sheet) in the section where the temperature of the roller is increased in the calendering molding process is thinned, and the film (sheet) in the section where the temperature is reduced is thickened, so that the problem of uneven transverse thickness of the film (sheet) is thoroughly solved.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention relates to a novel sectional heating roller and a calender with the structure, which improve the integral heating mode of the traditional calendering roller, divide the processing area of the calendering roller into a plurality of sections for longitudinal sectional heating, and independently heat and control each section, and are different from the conventional heating of 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 integral heating of the calendering roller can not solve the problem of uneven temperature of the middle and two ends of the surface of the calendering roller), and the temperature of the middle and two ends of the surface of the calendering roller can be respectively controlled, thereby solving the problem of uneven temperature of each area of the surface of the calendering roller;
(2) the novel sectional heating roller and the calender with the structure respectively control the working power of each electromagnetic coil through the controller to perform sectional heating on the roller, and when the problem of three high and two low of a film (sheet) is solved, the temperature of the roller is increased in the section of the three high, the temperature of the roller is reduced in the section of the two low, so that the film (sheet) in the section of the roller with the increased temperature becomes thinner and the film (sheet) in the section of the reduced temperature becomes thicker in the calendering and molding process, thereby thoroughly solving the problem of uneven transverse thickness of the film (sheet) and eliminating the phenomenon of three high and two low;
(3) according to the novel sectional heating roller and the calender with the structure, the electromagnetic coils of the adjacent rollers on the calender are arranged in a staggered manner, so that the temperature difference between the boundaries of the electromagnetic coils is effectively eliminated, and the thickness uniformity of a film (sheet) is ensured;
(4) the novel sectional heating roller and the calender with the structure reduce energy consumption, the electromagnetic coil heating is directly acted on the roller, no pipeline heat loss exists, the heat conversion efficiency of the electromagnetic coil is high, and the energy can be saved by 50 percent compared with a heat-conducting oil type roller;
(5) compared with the heat-conducting oil type roller, the novel sectional heating roller and the calender with the structure adopt the electromagnetic coil for heating without arranging a heat-conducting oil circulating system (such as an oil pump, a heater and other equipment), thereby not only reducing equipment investment and occupying less space, but also being cleaner and tidier without heat-conducting oil;
(6) compared with heating wires, the novel sectional heating roller and the calender with the structure have the advantages that the electromagnetic coil is adopted for heating, the reaction rate is controlled to be high, the cooling speed of the electromagnetic coil is high, no residual heat exists, and the phenomenon of 'temperature rush' caused by residual heat is avoided;
(7) the novel sectional heating roller and the calender with the structure have the advantages of simple structure, ingenious design and obvious effect;
(8) the novel sectional heating roller and the calender with the structure have the advantages of stable and reliable operation, convenient installation and maintenance, low cost, strong practicability and suitability for large-scale popularization.
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 structural view of a novel sectional heating roller;
FIG. 2 is a schematic structural diagram of the staggered arrangement of the electromagnetic coils on the adjacent rollers;
FIG. 3 is an enlarged schematic view of the structure of the staggered arrangement of the electromagnetic coils on the adjacent rollers;
fig. 4 is a schematic diagram of a calender roll having a waist drum configuration.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The embodiment provides a novel sectional heating roller, and the structure thereof is shown in the attached figure 1 in detail: including roller core 1 and the left axle end 2 and the right axle end 3 of setting at roller core 1 both ends, there are a plurality of recesses 4 that are parallel to each other along axial direction interval equipartition on roller core 1's the outer wall, recess 4 is seted up and is the ring structure along roller core 1's circumferencial direction, be equipped with solenoid 5 in the recess 4, the cover is equipped with roller face cover 6 on roller core 1's the outer wall, and the through wires hole 7 of setting up power cord and/or signal line is seted up to the centre of roller. The number and the density of the electromagnetic coils are determined according to actual conditions, the higher the density is, the smaller the temperature difference between the heating sections is, the fewer the electromagnetic coils are arranged, and the cost investment is relatively low.
Preferably, the electromagnetic coil 5 is externally connected with a controller to control the working power of the electromagnetic coil 5, and the controller comprises a temperature control module and an electromagnetic heating control module which are connected. The temperature control module is used for ensuring that the temperature is accurate, and the electromagnetic heating control module guarantees that solenoid moves and carries out the instruction that the temperature control module exported, dedicated temperature controller can be chooseed for use to the temperature control module, also can choose for use PLC or industrial computer to add interface and software in addition and realize, and the similar converter of electromagnetic heating control module: the 380V power supply is input, a control signal is input, electricity (a frequency converter) of a driving motor with adjustable frequency is output, and a high-frequency electric driving electromagnetic induction coil (electromagnetic heating) with adjustable power is output.
Preferably, the electromagnetic coil 5 is connected to an external controller via an electrically conductive slip ring.
Preferably, temperature sensors for monitoring the temperature of each heating area are arranged in each heating area on the surface of the roller, wherein the temperature sensors are connected with an external controller through a conductive slip ring or a wireless module for communication. The temperature sensor, the controller and the electromagnetic coil are matched to work, so that the temperature of each heating area can be monitored and adjusted in real time, and the problem of uneven transverse thickness of the film (sheet) is thoroughly solved.
Preferably, the controller sets the same working power for the electromagnetic coils 5 symmetrically arranged at the left end and the right end of the roller core 1 in pairs. Because the symmetric areas at the left and right ends of the roller are affected by the lubricating oil in the bearing in the same way, and the materials in the gaps of the roller in the calendering molding process of the film (sheet) continuously roll from the middle of the roller 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 coil and the controller can be reduced, and the cost is reduced.
Preferably, the electromagnetic coil 5 is externally connected with a power supply to supply power for heating. The electromagnetic coil 5 is connected with an external power supply through the same power line.
The working principle is as follows: the electromagnetic coils are uniformly distributed on the outer wall of the roller core at intervals along the axial direction, so that the roller is divided into a plurality of heating areas (compared with the integral heating of the traditional roller) which can independently control the temperature in the axial direction (namely the transverse direction), the problem of uneven temperature in the middle and two ends of the roller surface of the calendering roller is solved, the uniformity of the transverse thickness of a film (sheet) is ensured, and the electromagnetic coils on the roller are arranged along the circumferential direction of the roller core and are in a ring-shaped structure, which is equivalent to that each electromagnetic coil independently heats the roller longitudinally, and the circumferential surface of the whole roller can be uniformly heated without temperature difference.
According to the physical characteristics of the plastic polymer material and the phenomena of the calendering molding process, the sectional electromagnetic heating roller aims at the problem of 'three high and two low' of the film (sheet), the working power of the electromagnetic coil is controlled by the controller, so that the temperature of the heating section where the electromagnetic coil is located is controlled, if the roller has the three high section in the calendering molding process, the controller controls and increases the working power of the electromagnetic coil in the section, the temperature of the section of the roller is increased, the working power of the electromagnetic coil in the section is reduced, the temperature of the section of the roller is reduced, the film (sheet) in the section where the temperature of the roller is increased in the calendering molding process is thinned, and the film (sheet) in the section where the temperature is reduced is thickened, so that the problem of uneven transverse thickness of the film (sheet) is thoroughly solved.
Example 2
This example provides a novel segmented heating roll having the structure described in example 1.
The embodiment also provides a calender with the structure, wherein the calender is provided with a plurality of rollers as described in the embodiment 1, and the electromagnetic coils 5 on the adjacent rollers are arranged in a staggered mode, as shown in figures 2 and 3. And the electromagnetic coils 5 on the adjacent rollers are arranged in a staggered way. The heating zone of two adjacent rollers about staggering promptly, can effectively eliminate the temperature difference of ladder nature (for example in last roller, the material is located between two electromagnetic heating zones, the temperature is lower relatively, and this material flows after adjacent next roller along with the roller rolls, because of the crisscross setting of solenoid on the adjacent roller, this material is in solenoid's heating zone at adjacent next roller, its temperature can promote to go up, so effectively eliminated the temperature difference, avoided the material to be in between solenoid's the heating zone always).
Examples 1 and 2 have the following advantageous 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, longitudinal segmented heating is carried out, and each section is independently heated and controlled, so that the problem that the temperature in the middle and two ends of the surface of the calendering roller is not uniform can be solved by integrally heating the calendering roller which only has one set of heating device in the whole calendering roller and cannot control the temperature in the middle and two ends of the surface of the calendering roller in the conventional heating mode of the calendering roller;
(2) the working power of each electromagnetic coil is respectively controlled by the controller, the roller is heated in a segmented manner, when the problem of three high and two low of the film (sheet) is solved, the temperature of the roller is increased in the section of three high, the temperature of the roller is reduced in the section of two low, so that the film (sheet) in the section of the roller with the increased temperature is thinned in the calendering and molding process, and the film (sheet) in the section of the roller with the reduced temperature is thickened, thereby thoroughly solving the problem of uneven transverse thickness of the film (sheet), and eliminating the phenomenon of three high and two low;
(3) the electromagnetic coils of the adjacent rollers on the calender are arranged in a staggered manner, so that the temperature difference between the boundaries of the electromagnetic coils is effectively eliminated, and the thickness uniformity of the film (sheet) is ensured;
(4) the energy consumption is reduced, the electromagnetic coil is heated by directly acting on the roller, the heat loss of a pipeline does not exist, the heat conversion efficiency of the electromagnetic coil is high, and the energy can be saved by 50 percent compared with that of a heat-conducting oil type roller;
(5) compared with the heat conduction oil type roller, the electromagnetic coil is adopted for heating without arranging a heat conduction oil circulating system (such as an oil pump, a heater and other equipment), so that the equipment investment is reduced, the occupied space is smaller, heat conduction oil is not needed, and the roller is cleaner and tidier;
(6) compared with heating by an electric heating wire, the electromagnetic coil heating has the advantages that the reaction rate is controlled to be high, the cooling speed of the electromagnetic coil is high, no residual heat exists, and the phenomenon of temperature rush caused by residual heat is avoided;
(7) the structure is simple, the design is ingenious, and the effect is obvious;
(8) the operation is reliable and stable, installation easy maintenance, and is with low costs, and the practicality is strong, is fit for promoting on a large scale.
The foregoing description of specific embodiments of the present 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 one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. The utility model provides a novel segmentation heating roller, includes roller core (1) and sets up left axle end (2) and right axle end (3) at roller core (1) both ends, its characterized in that, there are a plurality of recesses (4) that are parallel to each other along axial direction interval equipartition on the outer wall of roller core (1), recess (4) are seted up and are the ring shape structure along the circumferencial direction of roller core (1), be equipped with solenoid (5) in recess (4), the cover is equipped with roller face cover (6) on the outer wall of roller core (1), and threading hole (7) that set up power cord and/or signal line are seted up to the centre of roller.
2. A novel segmented heating roller according to claim 1, characterized in that the electromagnetic coil (5) is externally connected with a controller to control the working power of the electromagnetic coil (5), and the controller comprises a temperature control module and an electromagnetic heating control module which are connected.
3. A novel segmented heated roll according to claim 2, characterized in that the electromagnetic coil (5) is connected to an external controller through an electrically conductive slip ring.
4. A novel sectional heating roller as claimed in claim 3, characterized in that each heating area of the surface of the roller, which is laid with the electromagnetic coil (5), is provided with a temperature sensor for monitoring the temperature of each heating area, and the temperature sensor is connected and communicated with an external controller through a conductive slip ring or a wireless module.
5. A novel sectional heating roller as claimed in claim 4, characterized in that the controller sets the same working power for the electromagnetic coils (5) arranged symmetrically at the left and right ends of the roller core (1).
6. A calender of this construction, characterised in that the calender has a plurality of rolls according to any one of claims 1 to 6, and the electromagnetic coils (5) on adjacent rolls are staggered.
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| CN202010882258.4A CN111873291A (en) | 2020-08-28 | 2020-08-28 | Novel segmentation heating roller and have calender of this structure |
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| CN202010882258.4A CN111873291A (en) | 2020-08-28 | 2020-08-28 | Novel segmentation heating roller and have calender of this structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289514A (en) * | 2021-12-31 | 2022-04-08 | 南通盛邦制辊有限公司 | Electromagnetic induction heating roller for rolling steel plate |
| CN114905685A (en) * | 2022-06-14 | 2022-08-16 | 镇江中垒新材料科技有限公司 | Novel calendering equipment and calendering method for silica gel hot-pressing buffer coiled material |
| CN117246039A (en) * | 2023-10-26 | 2023-12-19 | 浙江京华激光科技股份有限公司 | Infrared heating's moulding roller group and mould pressing equipment |
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