Novel segmented heating roller and calender with same

A segmented heating and calendering technology, which is applied to household appliances, other household appliances, flat products, etc., can solve the problems of uneven temperature between the middle and both ends of the calender roll surface, three high and two low transverse thicknesses, etc., and achieve an improvement in the overall Heating method, ensuring uniformity, and solving the effect of horizontal thickness unevenness

Pending Publication Date: 2020-11-03
SHANGHAI YOUPU PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defects in the prior art, the object of the present invention is to provide a novel segmented heating roller and a calender with this structure. The present invention divides the roller into a plurality of individually temperature-controlled heating rollers in the axial direction. area, which solves the problem of uneven temperature between the middle and both ends of the calender roll surface, eliminates the phenomenon of "three highs and two lows" in the transverse thickness of the film (sheet) product, and ensures the uniformity of the transverse thickness of the film (sheet)

Method used

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  • Novel segmented heating roller and calender with same
  • Novel segmented heating roller and calender with same
  • Novel segmented heating roller and calender with same

Examples

Experimental program
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Effect test

Embodiment 1

[0034] This embodiment provides a new segmented heating roller, the structure of which is shown in the attached figure 1 As shown: including the roller core 1 and the left shaft end 2 and the right shaft end 3 arranged at both ends of the roller core 1, the outer wall of the roller core 1 is evenly distributed with a plurality of mutually parallel grooves along the axial direction 4. The groove 4 is opened along the circumferential direction of the roller core 1 and has a circular structure, the electromagnetic coil 5 is arranged in the groove 4, and the outer wall of the roller core 1 is covered with a roller cover 6, A threading hole 7 for setting a power line and / or a signal line is provided in the middle of the roller. The number and density of electromagnetic coils are determined according to the actual situation. The higher the density, the smaller the temperature difference between the heating sections, the fewer the number of electromagnetic coils, and the lower the c...

Embodiment 2

[0043] This embodiment provides a new segmented heating roller, the structure of which is as described in Embodiment 1.

[0044] This embodiment also provides a calender with this structure, the calender has a plurality of rollers described in Embodiment 1, and the electromagnetic coils 5 on adjacent rollers are arranged alternately, as figure 2 and 3 shown. And the electromagnetic coils 5 on adjacent rollers are arranged alternately. That is, staggering the heating sections of the upper and lower adjacent rollers can effectively eliminate the stepwise temperature difference between the heating sections of the electromagnetic coil (for example, in the last roller, the material is between the two electromagnetic heating sections, The temperature is relatively low, and the material flows to the next adjacent roller as the roller rolls. Because the electromagnetic coils on the adjacent rollers are staggered, the material is in the electromagnetic coil of the next adjacent roll...

Embodiment 1 and 2

[0045] Embodiment 1 and 2 have the following beneficial effects:

[0046] (1) The overall heating method of the traditional calender roll is improved, the processing area of ​​the calender roll is divided into several sections, and the longitudinal segmental heating is carried out, and each section is independently heated and controlled, which is different from the conventional heating of the calender roll (calender roll conventional Heating means that there is only one set of heating device for the entire calender roll, and the overall heating of the calender roll cannot solve the problem of uneven temperature between the middle and both ends of the calender roll surface), and the temperature of the middle and both ends of the roll surface is controlled separately to solve the problem Solved the problem of uneven temperature in each area of ​​the roller surface;

[0047] (2) The working power of each electromagnetic coil is controlled separately by the controller, and the rol...

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Abstract

The invention provides a novel segmented heating roller which comprises a roller core, a left shaft end and a right shaft end. The left shaft end and the right shaft end are arranged at the two ends of the roller core, a plurality of parallel grooves are evenly distributed in the outer wall of the roller core in the axial direction at intervals, the grooves are formed in the circumferential direction of the roller core and are of an annular structure, and electromagnetic coils are arranged in the grooves; and the outer wall of the roller core is sleeved with a roller surface sleeve, and a threading hole where a power line and / or a signal line is arranged is formed in the middle of the roller. The invention further provides a calender with the structure, the calender is provided with a plurality of rollers, and the electromagnetic coils on the adjacent rollers are arranged in a staggered manner. The roller is divided into a plurality of heating areas with the temperature capable of being independently controlled in the axial direction, the problem that the temperature in the middle and at the two ends of a roller surface of a calendering roller is not uniform is solved, the phenomenon that the transverse thickness of a film (sheet) product is large at the middle and the two sides and small at two near-center sections is eliminated, and the uniformity of the transverse thicknessof the film (sheet) product is guaranteed.

Description

technical field [0001] The invention relates to the field of special-shaped calendering rolls, in particular to a novel segmented heating roll and a calendering machine with the structure. Background technique [0002] In the calendering process of film or hard sheet, there is a problem of uneven transverse thickness, that is, the thickness of the middle and two sides. The reasons are as follows: 1) During the calendering process, the roller is elastically deformed by the separation force of the material between the rollers; 2. ) The two sides of the roller are not covered by the material and it is easy to dissipate heat, and there is lubricating oil in the bearings at both ends of the roller. The cylinder is generally heated horizontally (such as heat-conducting oil-type calender rolls), and it is heated as a whole, so the temperature of a single area of ​​the cylinder cannot be controlled separately. [0003] There are currently three solutions: [0004] 1. Medium-height...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/24B29C43/52B29C43/46B29L7/00
CPCB29C43/24B29C43/46B29C43/52B29L2007/002
Inventor 宋铱宁
Owner SHANGHAI YOUPU PLASTIC
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