A kind of structure improved calender
Technical field
The utility model relates to the calender technical field, relates in particular to a kind of structure improved calender.
Background technology
At present, in paper production line, calender is final decision paper quality and quantity-produced key equipment.Calender of the prior art is when paper injection; If joint appears in paper web, between the felt wrapped roll owing to can't separate and cause joint be compelled pressurized, because of the mode of joint majority employing adhesive tape bonds; Therefore adhesive tape can be entangled in that cause on the roll surface can't ordinary production; Can damage equipment when serious, in order to address this problem, the structure that people have improved calender can separate felt wrapped roll to make the paper web joint can pass through calender smoothly.
The patent No. is 201020564635.1 Chinese utility model patent; A kind of weight power cardboard calender is disclosed; It comprises Power Component, frame, top roller, bottom roller and micro-adjusting mechanism, and micro-adjusting mechanism comprises worm gear, worm screw and handwheel, artificial rotation hand wheel; Can drive worm gear rotates; Make bottom roller move up and down and the roll gap of top roller and bottom roller regulated that top roller and bottom roller formed certain roll gap, the problem that the paper web joint is passed through smoothly when this kind structure had solved the paper web joint through calender.When yet the manual adjustment calender formed roll gap, labour intensity was big when felt wrapped roll promoted, and operation is heavy; Hoisting velocity slowly and not steady, and roll gap needs through manually-operated link, by the nip paper injection of manual work between top roller and bottom roller after producing; There is potential safety hazard; Waste time and energy, automaticity is low, and production efficiency is lower; And the Power Component of this calender is a motor that is connected with top roller, and when manual adjustment made top roller and bottom roller form roll gap, top roller separated with bottom roller and its linear velocity is inconsistent; After the paper web joint was passed through by roll gap smoothly, top roller and bottom roller closed roller, this moment by the paper web of roll compacting between top roller and bottom roller since top roller and bottom roller when closing roller the linear velocity of two rollers inconsistent; The press polish weak effect of paper web, product of poor quality, do not meet production requirement; Even be prone to make the stress distribution of paper surface uneven; Cause disconnected paper easily, causing equally can't ordinary production, and operating efficiency is low.
The utility model content
The utility model is to the deficiency of prior art; Provide that a kind of automaticity is high, production efficiency is high, reduce labour intensity, effectively improve the structure improved calender of press polish effect; Quality through the paper web of this calender roll compacting is good, and the paper web smoothness is far above the standard of the top grade article of national GB/T16797-2008 defined.
The utility model is realized through following technology.
A kind of structure improved calender comprises frame and felt wrapped roll, and said felt wrapped roll is connected in said frame; Said felt wrapped roll comprises top roller and bottom roller; Said calender also comprises roll gap regulating system and the double motor equipment that is used to regulate gap between top roller and the bottom roller, and said double motor equipment drives and connects said felt wrapped roll, and said roll gap regulating system comprises PLC control system and Hydraulic Station; Said Hydraulic Station is connected with said felt wrapped roll, and said PLC control system and said Hydraulic Station are electrically connected.
Wherein, said double motor equipment is two direct current generators or two variable-frequency motors, and the set inside of said direct current generator or variable-frequency motor has encoder.
Wherein, two said direct current generators are connected with the axle head of said top roller, said bottom roller through universal joint respectively.
Wherein, said PLC control system comprises the PLC and the master control electromagnetic valve of electrical connection, and said master control electromagnetic valve is arranged at said frame.
Wherein, said Hydraulic Station comprises the power set that the said bottom roller of driving moves up and down, and said power set are hydraulic cylinder, and said hydraulic cylinder is fixedly connected on the bottom of said frame, and the piston rod of said hydraulic cylinder is connected with the bearing of said bottom roller.
Wherein, said Hydraulic Station comprises interconnected hydraulic oil pump and Hydraulic Elements, and said Hydraulic Elements are two-position four-way solenoid valve, and said two-position four-way solenoid valve is connected with pressure-reducing valve, choke valve, check valve and overflow valve.
Wherein, said calender also comprises the regulator that is used to control hydraulic oil pump, and said regulator comprises touch-screen, and said touch-screen is arranged at the surface of said frame.
Wherein, said two-position four-way solenoid valve is connected in the two ends of said hydraulic cylinder.
Wherein, said Hydraulic Station also comprises pressure switch, and said pressure switch and said overflow valve are formed protection system.
Wherein, the diameter of said felt wrapped roll is 450mm to 500mm, and said felt wrapped roll is that alloy forges moulding and the heat treated crowned roll of process.
The beneficial effect of the utility model: a kind of structure improved calender; Comprise frame and felt wrapped roll; Said felt wrapped roll is connected in said frame, and said felt wrapped roll comprises top roller and bottom roller, and said calender also comprises roll gap regulating system and the double motor equipment that is used to regulate gap between said top roller and the said bottom roller; Said double motor equipment drives and connects said felt wrapped roll; Said roll gap regulating system comprises PLC control system and Hydraulic Station, and said Hydraulic Station is connected with said felt wrapped roll, and said PLC control system and said Hydraulic Station are electrically connected.The utility model is as the press polish equipment of paper complete machine; Roll gap between roll gap regulating system scalable control top roller and the bottom roller; PLC control system can receive the lifting signal of the cylinder cutting knife of sending out the paper machine of complete machine; PLC control this moment system partly arrives the length computation felt wrapped roll separation time of the paper of calender according to the linear velocity of felt wrapped roll real time execution and the splicing of sending out the paper machine; When the paper web joint is about to the nip through top roller and bottom roller, calender is assigned the separation order of felt wrapped roll, Hydraulic Station ordered about bottom roller and moved down with top roller and separate the certain roll gap of formation automatically this moment; Make the paper web joint smoothly through roll gap, treat that the paper web joint recovers the former roller state that closes immediately through the back felt wrapped roll; Felt wrapped roll is when separating; Double motor equipment drives top roller and bottom roller run-in synchronism; The linear velocity of felt wrapped roll is consistent when guarantee dividing roller, treats that felt wrapped roll can close roller synchronously after the paper web joint is through roll gap, avoids the paper web unbalanced stress and disconnected paper occurs; Production is normally carried out continuously without interruption, and operating efficiency is high.The utility model can make the paper web joint nip through felt wrapped roll automatically; Reduced manually-operated intermediate link, simplified production process, reduced labour intensity, automaticity is high, production efficiency is high; Help promoting enterprise's mass automatic production; And effectively improved the press polish effect of paper web, good through the quality of the paper web of the utility model roll compacting, the paper web smoothness is far above the standard of the top grade article of national GB/T16797-2008 defined.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation at another visual angle of the utility model.
Fig. 3 is the hydraulic principle control chart of the utility model.
Reference numeral comprises:
1-frame, 2-felt wrapped roll, 21-top roller, 22-bottom roller, 3-double motor equipment, 31-direct current generator, 32-universal joint, 4-hydraulic cylinder.
The specific embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing the utility model is further described, the content that embodiment is mentioned not is the qualification to the utility model.
embodiment 1.
Extremely shown in Figure 3 like Fig. 1; A kind of structure improved calender of present embodiment comprises frame 1 and felt wrapped roll 2, and said felt wrapped roll 2 is connected in said frame 1; Said felt wrapped roll 2 comprises top roller 21 and bottom roller 22; Said calender also comprises roll gap regulating system and the double motor equipment 3 that is used to regulate gap between said top roller 21 and the said bottom roller 22, and said double motor equipment 3 drives and connects said felt wrapped roll 2, and said roll gap regulating system comprises PLC control system and Hydraulic Station; Said Hydraulic Station is connected with said felt wrapped roll 2, and said PLC control system and said Hydraulic Station are electrically connected.The utility model is as the press polish equipment of paper complete machine; Roll gap between roll gap regulating system scalable control top roller 21 and the bottom roller 22; PLC control system can receive the lifting signal of the cylinder cutting knife of sending out the paper machine of complete machine; PLC control this moment system partly arrives length computation felt wrapped roll 2 separation time of the paper web of calender according to the linear velocity of felt wrapped roll 2 real time executions and the splicing of sending out the paper machine; When the paper web joint is about to the nip through top roller 21 and bottom roller 22, calender is assigned the separation order of felt wrapped roll 2, Hydraulic Station ordered about bottom roller 22 and moved down to separate automatically with top roller 21 and form certain roll gap this moment; Make the paper web joint smoothly through roll gap, treat that the paper web joint recovers the former roller state that closes immediately through back felt wrapped roll 2; Certainly, Hydraulic Station also can order about top roller 21 and moves up to separate automatically with bottom roller 22 and form certain roll gap; Felt wrapped roll 2 is when separating; Double motor equipment drives top roller 21 and bottom roller 22 run-in synchronisms; The linear velocity of felt wrapped roll 2 is consistent when guaranteeing to divide roller, and felt wrapped roll 2 can close roller synchronously when treating the paper web joint through roll gap, avoids the paper web unbalanced stress and the paper that occurs breaking; The continuous free of discontinuities of production is carried out, and operating efficiency is high.The utility model can make the paper web joint pass through the nip of felt wrapped roll 2 automatically; Reduced manually-operated intermediate link, simplified production process, reduced labour intensity, automaticity is high, production efficiency is high; Help promoting enterprise's mass automatic production; And effectively improved the press polish effect of paper web, good through the quality of the paper web of the utility model roll compacting, the paper web smoothness is far above the standard of the top grade article of national GB/T16797-2008 defined.
In the present embodiment, said double motor equipment 3 is two direct current generators 31, and the set inside of said direct current generator 31 has encoder.Direct current generator 31 good speed adjustment features, convenience; Encoder can be controlled rotating speed, the tension force of direct current generator 31; Make the precisely linear velocities of control felt wrapped rolls 2 operations of direct current generator 31, guarantee that paper web can realize closing synchronously roller through felt wrapped roll 2 behind the nip of calender, guarantee to produce and normally carry out.
In the present embodiment, two said direct current generators 31 are connected through the axle head of universal joint 32 with said top roller 21, said bottom roller 22 respectively.Universal joint is 32 simple in structure, working service convenient, and the transmission distance of universal joint 32 is long and can turn to, and adopts universal joint 32 to connect the vibration that can reduce equipment, and maintenance equipment operates steadily.
In the present embodiment, said PLC control system comprises the PLC and the master control electromagnetic valve of electrical connection, and said master control electromagnetic valve is arranged at said frame 1.When PLC control system receives the lifting signal of cylinder cutting knife of the paper machine of sending out of complete machine; PLC partly arrives length computation bottom roller 22 separation time of the paper of calender according to the linear velocity of felt wrapped roll 2 real time executions and the splicing of sending out the paper machine; The master control electromagnetic valve is given in concurrent load instruction; The master control electromagnetic valve is assigned bottom roller 22 unloading command, makes bottom roller 22 separate the formation roll gap with top roller 21 and passes through by the paper web joint, treats that the paper web joint loads through back master control electromagnetic valve indication bottom roller 22 more automatically; Felt wrapped roll 2 recovers the former roller state that closes immediately, and the continuous free of discontinuities of production is carried out.
In the present embodiment, said Hydraulic Station comprises the power set that the said bottom roller 22 of driving moves up and down, and said power set are hydraulic cylinder 4, and said hydraulic cylinder 4 is fixedly connected on the bottom of said frame, and the piston rod of said hydraulic cylinder 4 is connected with the bearing of said bottom roller 22.That hydraulic cylinder 4 has is simple in structure, power output is big, stable and reliable for performance and working service advantage easily, can drive bottom roller 22 through moving upward of piston rod and upwards lift closed nip, and 22 pairs of paper web roll compacting through roll gap of bottom roller make paper web obtain ornamenting.Because employing bottom roller 22 upwards pressurizes rather than existing top roller 21 pressurizes to paper web downwards, in the time of can avoiding having a power failure like this, top roller 21 may fall because of oil pump quits work in the process that is raised, thereby causes roll surface to damage or security incident.
In the present embodiment; Said Hydraulic Station comprises interconnected hydraulic oil pump and Hydraulic Elements; Said Hydraulic Elements are two-position four-way solenoid valve, and said two-position four-way solenoid valve is connected with pressure-reducing valve, choke valve, check valve and overflow valve, and said two-position four-way solenoid valve is connected in the two ends of said hydraulic cylinder; Said Hydraulic Station also comprises pressure switch, and said pressure switch and said overflow valve are formed protection system.Two-position four-way solenoid valve is under the driving of hydraulic oil pump, and the hydraulic pressure oil content two-way that provides through oil circuit is to the two ends of hydraulic cylinder, and the pressure of Hydraulic Station is set to 20MPa, and pressure is big; Be easy to moving of drive pressure smooth roll 2, wherein, pressure-reducing valve control line pressure; Can prevent that pressure is excessive, throttle valve control is synchronous, and check valve control flows to; The control of hydraulic pressure and safety precautions guarantee that equipment is easy to operate, and control is sensitive, running safety.
In the present embodiment, said calender also comprises the regulator that is used to control hydraulic oil pump, and said regulator comprises touch-screen, and said touch-screen is arranged at the surface of said frame 1.Touch-screen can be controlled moulding pressure, the rate of climb and the branch roller speed of bottom roller 22; And make calender realize independent pressure regulation, the solenoid control of interlocking is adopted in pressure regulation, during pressure regulation one end; An other end is locked the pressure that can not influence the other end; Control sensitive and accurately, easy and safe to operate, further guaranteed the press polish quality of paper web.
The diameter of the said felt wrapped roll 2 of present embodiment is 450mm, and said felt wrapped roll 2 forges moulding and the heat treated crowned roll of process for alloy.The diameter of felt wrapped roll 2 is 450mm, and diameter is bigger, can increase nip and increase the contact area of felt wrapped roll 2 surface and paper web; Prevent paper web by conquassation, can improve the time of staying of paper web, and further improve the press polish effect of paper web at nip; The product smoothness is increased, and felt wrapped roll 2 forges moulding for alloy and through Overheating Treatment, its case hardness increases; More wear-resistant, effectively guarantee the press polish quality of paper web.
embodiment 2.
This enforcement is with the difference of embodiment 1: the said double motor equipment 3 of present embodiment is two variable-frequency motors, and the set inside of said variable-frequency motor has encoder.The variable-frequency motor speed governing is steady, and no torque pulsation is non-maintaining, operation is lasting, and rotating speed is higher, makes that mechanical automation degree and production efficiency greatly improve, energy savings, and device miniaturization, increase comfortableness.
In the present embodiment, the diameter of said felt wrapped roll 2 is 500mm, and said felt wrapped roll 2 forges moulding and the heat treated crowned roll of process for alloy.The diameter of felt wrapped roll 2 is 500mm, and diameter increases, and the surface of felt wrapped roll 2 is bigger with the contact area of paper web, the web calendered better effects if.The diameter of felt wrapped roll 2 is not limited to 500mm, can suitably adjust the size of felt wrapped roll 2 diameters according to actual needs, as long as felt wrapped roll 2 is effectively contacted with paper web through calender.
Other structure of present embodiment is identical with embodiment 1, repeats no more at this.
The paper web technical parameter that embodiment 1 ~ 2 press polish of the utility model makes is following:
The above embodiment; Be merely the preferred embodiments of the utility model; Be not to limit the utility model practical range; So all equivalences of doing according to the described structure of the utility model claim, characteristic and principle change or modify, and all should comprise in the utility model patent claim.