CN204183803U - Tri-roll press machine - Google Patents
Tri-roll press machine Download PDFInfo
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- CN204183803U CN204183803U CN201420608712.7U CN201420608712U CN204183803U CN 204183803 U CN204183803 U CN 204183803U CN 201420608712 U CN201420608712 U CN 201420608712U CN 204183803 U CN204183803 U CN 204183803U
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Abstract
The utility model discloses a kind of tri-roll press machine, first, the two ends of the 3rd pressure roller are arranged in a movable axis bearing respectively, movable axis bearing is all connected by connector the inner with a screw rod, axially lock between screw rod and connector and radial direction can rotate, every root screw flight is equipped with in the first tapped through hole of the thread bush of frame, screw rod outer end is connected with rotating driving device, each movable axis bearing is connected with at least one lifting rod, lifting rod is all located in the installation through hole of corresponding thread bush, lifting rod be provided with spring and regulate pressing plate, spring makes movable axis bearing have the trend of tight nearly corresponding thread bush, frame outside discharge zone above the 3rd pressure roller is provided with discharge guiding device.The utility model has the advantages that: the impact that thread pitch adjusts adjacent roller space can be overcome, and can rolled products is neat, outwards derivation efficiently.
Description
Technical field
The utility model relates to calender, refers more particularly to tri-roll press machine.
Background technology
Calender is mainly in order to produce the thin sheet products such as plastic sheet, film, artificial leather.The structure of traditional tri-roll press machine comprises: three pressure rollers of L-shaped layout, that is: the second pressure roller, horizontal direction is positioned at the first pressure roller of the second pressure roller side, vertical direction is positioned at the 3rd pressure roller above the second pressure roller, spacing between adjacent pressure roller and the thickness of rolled products adapt, three pressure rollers can rotate respectively under the driving of calendering driving mechanism, the rotation direction of three pressure rollers makes calendering raw material first be admitted to first, first time calendering is carried out between second pressure roller, complete the output of rolled products above the 3rd pressure roller of final calendering---namely discharge zone exports, frame is provided with the spacing regulator of spacing between the adjacent pressure roller of adjustment, the structure of spacing regulator is: first, the two ends of the 3rd pressure roller are arranged in a movable axis bearing respectively, movable axis bearing is all movably set in frame, the adjustment driving mechanism of energy driving shaft bearing movement is respectively arranged with between frame and each movable axis bearing, the concrete structure of each adjustment driving mechanism is: the thread bush being fixedly installed threaded through hole in frame, screw rod is equipped with in the tapped through hole of thread bush, the inner of screw rod is connected with movable axis bearing by connector, axially lock between screw rod and connector and radial direction can rotate, the rotating driving device that outer end and the drive screw of screw rod rotate is connected.When needing to adjust the spacing between adjacent pressure roller, start rotating driving device, screw rod is rotated, because thread bush is fixedly installed in frame, therefore screw rod will drive movable axis bearing to move axially relative to thread bush, thus realizes the object of spacing between the adjacent pressure roller of adjustment.
There is following defect in traditional tri-roll press machine: one, to be cooperatively interacted transmission by screw thread between screw rod and thread bush, this screw drive structure makes the ridge on screw rod always there is thread pitch with between the ridge be meshed in tapped through hole, just being difficult to the actual pitch accurately controlled between adjacent pressure roller like this when carrying out calendering work, being also just difficult to the thickness accurately controlling rolled products; Two, do not have discharge guiding device in tri-roll press machine, roll the rolled products produced and guide output by operator, not only increase labour intensity, operating efficiency is lower, and production cost is high.
Utility model content
The purpose of this utility model is: provide a kind of and can get rid of the impact of thread pitch on spacing between adjacent pressure roller, thus can accurately control rolled products thickness and tri-roll press machine rolled products efficiently can derived.
For achieving the above object, the technical solution adopted in the utility model is: tri-roll press machine, comprise: frame, three pressure rollers of L-shaped layout are provided with in frame, that is: the second pressure roller, horizontal direction is positioned at the first pressure roller of the second pressure roller side, vertical direction is positioned at the 3rd pressure roller above the second pressure roller, three pressure rollers rotate respectively under the driving of calendering driving mechanism, the rotation direction of three pressure rollers makes calendering raw material first be admitted to first, between second pressure roller, first time calendering is carried out in top, the discharge zone of rolled products above the 3rd pressure roller completing final calendering exports, frame is provided with the spacing regulator regulating spacing between adjacent pressure roller, the structure of spacing regulator is: first, the two ends of the 3rd pressure roller are arranged in a movable axis bearing respectively, movable axis bearing is all movably set in frame, each movable axis bearing is all connected by connector the inner with a screw rod, axially lock between screw rod and connector and radial direction can rotate, the equal threaded engagement of every root screw rod is arranged in the first tapped through hole of thread bush, all thread bush are all fixedly mounted in frame, the rotating driving device that outer end and the drive screw of screw rod rotate is connected, each movable axis bearing is also connected with at least one lifting rod, the equal activity of every root lifting rod is located in the installation through hole of corresponding thread bush, every root lifting rod be provided with spring and regulate pressing plate, the two ends of spring are pressed on thread bush respectively and regulate between pressing plate, the elastic force of spring makes movable axis bearing have the trend of the thread bush near correspondence, thus the ridge on screw rod is held out against mutually with the ridge be meshed in the first tapped through hole, frame outside the 3rd pressure roller discharge zone is provided with the guide rail of a pair vertical direction, lifting support is arranged in pair of guide rails by the slide of its both sides, lifting support is provided with the some guide rollers rolled products exported by the 3rd pressure roller can derived, guide roller is parallel to the 3rd pressure roller and arranges, and frame is provided with the lifting drive that lifting support can be driven to be elevated.
Further, aforesaid tri-roll press machine, wherein, the concrete structure of rotating driving device is: be connected with guide flat keyway by dive key between the outer end of screw rod and the worm gear in worm gear case, there is gap between dive key and guide flat keyway and gap can guarantee that worm gear drives bolt rotary and do not hinder screw axial to move, the worm gear in worm gear case is driven by reducing motor by worm screw.
Further, aforesaid tri-roll press machine, wherein, the structure of described lifting drive is: the frame above lifting support is arranged installation crossbeam, the two-end part installing crossbeam is movably set with the guide screw mandrel of a vertical direction respectively, the bottom of two guide screw mandrels is equipped with respectively in second tapped through hole at lifting support two ends, the upper end of two guide screw mandrels is respectively arranged with guide worm gear, driven by a two output reduction motor in synchrony with the guide worm screw of two guide worm gear engaged transmission respectively and rotate, two output reduction motor is arranged on to be installed on crossbeam.
Further, aforesaid tri-roll press machine, wherein, the frame at the 3rd pressure roller two ends arranges the overlap cutter sweep of a cutting rolled products overlap respectively, its concrete structure is: in order to cut the cutting knife of overlap, cutting knife is arranged on knife bar, the outer end of knife bar is provided with sliding sleeve, sliding sleeve movable set is being installed on the horizontal mounting bar in frame, horizontal mounting bar and the 3rd pressure roller arranged in parallel, sliding sleeve can move on horizontal mounting bar, and can rotate around horizontal mounting bar, sliding sleeve is provided with the lock-screw that sliding sleeve can be locked on horizontal mounting bar.
Further, aforesaid tri-roll press machine, wherein, the correcting wedge preventing the 3rd pressure roller and the second pressure roller from mutually colliding also is provided with between the 3rd pressure roller and the second pressure roller, the outer end of correcting wedge is provided with the curved boom to a lateral buckling, the bearing block of the second pressure roller end is provided with stay bolt, stay bolt is provided with two locking nuts, curved boom activity to be located on stay bolt and between two locking nuts, curved boom can be locked on stay bolt by two locking nuts, and make between the movable axis bearing of correcting wedge in the 3rd pressure roller end and the bearing block of the second pressure roller end.
Further, aforesaid tri-roll press machine, wherein, each movable axis bearing is connected to two lifting rods, and two lifting rods are respectively in the both sides of corresponding screw rod symmetrically.
Further, aforesaid tri-roll press machine, wherein, the syndeton between adjustment pressing plate and lifting rod is: on lifting rod, be provided with thread segment, thread segment is provided with adjusting nut, and adjusting nut is locked at the outside regulating pressing plate.
Further, aforesaid tri-roll press machine, wherein, the syndeton of knife bar and sliding sleeve is: knife bar offers elongate holes, roll adjustment screw can move around and can be locked in elongate holes in elongate holes, and described roll adjustment screw is fixedly mounted on sliding sleeve.
The utility model has the advantages that: one, owing to being all provided with lifting rod in each movable axis bearing, every root lifting rod be provided with spring and regulate pressing plate, the elastic force of spring makes movable axis bearing have the trend of the thread bush near correspondence, thus the screw flight tooth in each movable axis bearing is held out against mutually with between the ridge be meshed in the first corresponding tapped through hole, so just overcome the impact that thread pitch adjusts spacing when rotating screw bolt carries out spacing adjustment between adjacent pressure roller, thus accurately can control the thickness of rolled products, improve the quality of production of rolled products, two, pass through the lifting support of discharge zone arranged outside liftable adjustment above the 3rd pressure roller and some guide rollers are set on lifting support, make the rolled products of deriving from the 3rd pressure roller can outside derivation under the dredging of guide roller, substantially increase the derivation efficiency of rolled products like this, reduce labour intensity, also reduce production cost simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of tri-roll press machine described in the utility model.
Fig. 2 is the structure for amplifying schematic diagram of part A in Fig. 1.
Fig. 3 is the mounting structure schematic diagram of correcting wedge in Fig. 1.
Fig. 4 is the structural representation of the left apparent direction of Fig. 3.
Fig. 5 is the structural representation of the overlap cutter sweep in tri-roll press machine described in the utility model.
Fig. 6 is the mounting structure schematic diagram of the lifting drive shown in B direction in Fig. 1.
Fig. 7 is the mounting structure schematic diagram of the guide roller in Fig. 1 shown in C direction.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in further detail.
As Fig. 1, shown in Fig. 2, tri-roll press machine, comprise: frame 1, three pressure rollers of L-shaped layout are provided with in frame 1, that is: the second pressure roller 2, horizontal direction is positioned at the first pressure roller 3 of the second pressure roller 2 side, vertical direction is positioned at the 3rd pressure roller 4 above the second pressure roller 2, three pressure rollers rotate respectively under the driving of calendering driving mechanism 20, calendering driving mechanism 20 is actuation techniques conventional in tri-roll press machine, mainly comprise: motor, the transmission mechanisms such as travelling gear, the rotation direction of three pressure rollers makes calendering raw material first be admitted to carry out first time between the first pressure roller 3 and the second pressure roller 2 to roll, the discharge zone of rolled products above the 3rd pressure roller 4 completing final calendering exports, frame is provided with the spacing regulator regulating spacing between adjacent pressure roller, the concrete structure of the spacing regulator of the present embodiment is: the two ends of the first pressure roller 3 and the 3rd pressure roller 4 are arranged in a movable axis bearing 5 respectively, movable axis bearing 5 is all movably set in frame 1, each movable axis bearing 5 is all connected by connector 7 the inner with a screw rod 6, all axially lock between screw rod 6 and connector 7 and radial direction can rotate, every root screw rod 6 threaded engagement is arranged in the first tapped through hole 81 of thread bush 8, all thread bush 8 are all fixedly mounted in frame 1, the rotating driving device that outer end and the drive screw 6 of screw rod 6 rotate is connected, in the present embodiment, the concrete structure of rotating driving device is: be connected with guide flat keyway by dive key between the outer end of screw rod 6 and the worm gear 14 in worm gear case 13, gap is there is between dive key and guide flat keyway, and gap can guarantee that worm gear 14 drives screw rod 6 rotate and do not hinder screw rod 6 to move axially, worm gear 14 in worm gear case 13 is driven by reducing motor by worm screw 16, reducing motor can be arranged in frame 1, each movable axis bearing 5 is also connected with at least one lifting rod 9, the quantity of lifting rod 9 can be arranged according to actual needs, in order to make movable axis bearing 5 uniform force in the present embodiment, each movable axis bearing 5 is connected to two lifting rods 9, two lifting rods 9 are respectively in the both sides of the screw rod 6 corresponding with this movable axis bearing 5 symmetrically, every root lifting rod 9 all activity is located in the installation through hole 82 of corresponding thread bush 8, every root lifting rod 9 be provided with spring 10 and regulate pressing plate 11, syndeton between adjustment pressing plate 11 and lifting rod 9 is: on lifting rod 9, be provided with thread segment 91, thread segment 91 is provided with adjusting nut 12, adjusting nut 12 is locked at the outside regulating pressing plate 11, the two ends of spring 10 are pressed on thread bush 8 respectively and regulate between pressing plate 11, the elastic force of spring 10 makes movable axis bearing 5 have the trend of the thread bush 8 near correspondence, thus ridge on screw rod 6 is held out against mutually with the ridge be meshed in the first tapped through hole 81, by the locked position of adjustment adjusting nut 12 on thread segment 91, can the elastic force of regulating spring 10.In order to the elastic force of spring 10 can be made full use of, usually need lifting rod 9 to be parallel to corresponding screw rod 6 and arrange.In addition, the correcting wedge 17 preventing the 3rd pressure roller 4 and the second pressure roller 2 from mutually colliding also is provided with between the 3rd pressure roller 4 and the second pressure roller 2, as Fig. 3, shown in Fig. 4, the outer end of correcting wedge 17 is provided with the curved boom 171 to a lateral buckling, the bearing block 21 of the second pressure roller 2 end is provided with stay bolt 15, stay bolt 15 is provided with two locking nuts, curved boom 171 activity to be located on stay bolt 15 and between two locking nuts, curved boom 171 can be locked on stay bolt 15 by two locking nuts, and make correcting wedge 17 between the movable axis bearing 5 and the bearing block 21 of the second pressure roller 2 end of the 3rd pressure roller 4 end, by the locked position of adjustment curved boom 171 on stay bolt 15, the front end that can change correcting wedge 17 stretches to the position between the 3rd pressure roller 4 and the second pressure roller 2, thus regulate the size of crashproof spacing between the 3rd pressure roller 4 and the second pressure roller 2, as can be seen from Figure 4 the front end of correcting wedge 17 is more deep, crashproof spacing between 3rd pressure roller 4 and the second pressure roller 2 is larger, the size of crashproof spacing can adjust according to actual needs.Owing to being all provided with two lifting rods 9 in each movable axis bearing 5, every root lifting rod 9 be provided with spring 10 and regulate pressing plate 11, the elastic force of spring 10 makes movable axis bearing 5 have the trend of the thread bush 8 near correspondence, thus make mutually to hold out against between the ridge of the screw rod 6 in each movable axis bearing 5 with the ridge be meshed in the first corresponding tapped through hole 81, so just overcome the impact that thread pitch adjusts spacing when rotating screw bolt 6 carries out spacing adjustment between adjacent pressure roller, thus accurately can control the thickness of rolled products, improve the quality of production of rolled products.
As Fig. 1, Fig. 6, shown in Fig. 7, frame 1 above the 3rd pressure roller 4 outside discharge zone is provided with the guide rail 50 of a pair vertical direction, lifting support 60 is arranged in pair of guide rails 50 by the slide of its both sides, lifting support 60 is provided with some guide rollers 70 rolled products exported by the 3rd pressure roller 4 outwards can derived, the quantity of guide roller 70 can be arranged according to actual needs, in the present embodiment, on lifting support 60, horizontal interval is provided with three guide rollers 70, described guide roller 70 is all parallel to the 3rd pressure roller 4 and arranges, frame 1 is provided with the lifting drive that lifting support 60 can be driven to be elevated, the structure of the lifting drive described in the present embodiment is: the frame 1 above lifting support 60 is arranged and installs crossbeam 190, the two-end part installing crossbeam 190 is movably set with the guide screw mandrel 80 of a vertical direction respectively, the bottom of two guide screw mandrels 80 is equipped with respectively in second tapped through hole 601 at lifting support 60 two ends, the upper end of two guide screw mandrels 80 is respectively arranged with guide worm gear 90, synchronously rotation is driven by a two output reduction motor 110 respectively with two guide worm screws 100 of two ends guide worm gear 90 engaged transmission, two output reduction motor 110 is arranged on to be installed on crossbeam 190.In addition, the overlap cutter sweep 210 of a cutting rolled products overlap is set respectively in the present embodiment in the frame 1 at the 3rd pressure roller 4 two ends, as shown in Figure 5, the concrete structure of overlap cutter sweep 210 is: in order to cut the cutting knife 130 of overlap, cutting knife 130 is arranged on knife bar 140, the outer end of knife bar 140 is provided with sliding sleeve 160, sliding sleeve 160 movable set is on the horizontal mounting bar 170 be installed in frame 1, horizontal mounting bar 170 and the 3rd pressure roller 4 are parallel to each other, sliding sleeve 160 can move on horizontal mounting bar 170, and can rotate around horizontal mounting bar 170, sliding sleeve 160 is provided with the lock-screw 180 that sliding sleeve 160 can be locked on horizontal mounting bar 170, knife bar 140 with the syndeton of sliding sleeve 160 is: knife bar 140 offers elongate holes 141, roll adjustment screw can move around in elongate holes 141, and can be locked in elongate holes 141, described roll adjustment screw is fixedly mounted on sliding sleeve 160.In actual use procedure, the position of sliding sleeve 160 on horizontal mounting bar 170 at two ends can be adjusted according to the width of rolled products, also sliding sleeve 160 can correspondingly be rotated according to the cutting angle of reality, guarantee that cutting knife 130 can cut overlap, in addition, also adjust by the adjustment position of roll adjustment screw in elongate holes 141 length that knife bar 140 stretches out, above-mentioned adjustment is all very convenient.
During work, 3rd pressure roller 4 constantly rotates and is constantly derived from discharge zone by the rolled products rolled, simultaneously, the cutting knife 130 being positioned at the 3rd pressure roller 4 two ends constantly carries out overlap cutting to the rolled products of deriving, thus ensure that the both sides of the rolled products produced are smooth, neat, the rolled products that overlap has cut is directed into guide roller 70 along with the discharge zone of rotation constantly above the 3rd pressure roller 4 of the 3rd pressure roller 4, and rolled products constantly outwards efficiently, is fitly derived along three guide rollers 70.When needing the guide height adjusting guide roller 70, starting two output reduction motor 110 synchronously drives the guide worm screw 100 at two ends and guide worm gear 90 to rotate, thus the synchronous guide screw mandrel 80 at two ends that drives rotates, such lifting support 60 is just moved up and down until be adjusted to suitable height along guide rail 50 by the chute at its two ends.
Claims (8)
1. tri-roll press machine, comprise: frame, three pressure rollers of L-shaped layout are provided with in frame, that is: the second pressure roller, horizontal direction is positioned at the first pressure roller of the second pressure roller side, vertical direction is positioned at the 3rd pressure roller above the second pressure roller, three pressure rollers rotate respectively under the driving of calendering driving mechanism, the rotation direction of three pressure rollers makes calendering raw material first be admitted to first, between second pressure roller, first time calendering is carried out in top, the discharge zone of rolled products above the 3rd pressure roller completing final calendering exports, frame is provided with the spacing regulator regulating spacing between adjacent pressure roller, it is characterized in that: the structure of spacing regulator is: first, the two ends of the 3rd pressure roller are arranged in a movable axis bearing respectively, movable axis bearing is all movably set in frame, each movable axis bearing is all connected by connector the inner with a screw rod, axially lock between screw rod and connector and radial direction can rotate, the equal threaded engagement of every root screw rod is arranged in the first tapped through hole of thread bush, all thread bush are all fixedly mounted in frame, the rotating driving device that outer end and the drive screw of screw rod rotate is connected, each movable axis bearing is also connected with at least one lifting rod, the equal activity of every root lifting rod is located in the installation through hole of corresponding thread bush, every root lifting rod be provided with spring and regulate pressing plate, the two ends of spring are pressed on thread bush respectively and regulate between pressing plate, the elastic force of spring makes movable axis bearing have the trend of the thread bush near correspondence, thus the ridge on screw rod is held out against mutually with the ridge be meshed in the first tapped through hole, frame outside the 3rd pressure roller discharge zone is provided with the guide rail of a pair vertical direction, lifting support is arranged in pair of guide rails by the slide of its both sides, lifting support is provided with the some guide rollers rolled products exported by the 3rd pressure roller can derived, guide roller is parallel to the 3rd pressure roller and arranges, and frame is provided with the lifting drive that lifting support can be driven to be elevated.
2. tri-roll press machine according to claim 1, it is characterized in that: the concrete structure of rotating driving device is: be connected with guide flat keyway by dive key between the outer end of screw rod and the worm gear in worm gear case, there is gap between dive key and guide flat keyway and gap can guarantee that worm gear drives bolt rotary and do not hinder screw axial to move, the worm gear in worm gear case is driven by reducing motor by worm screw.
3. tri-roll press machine according to claim 1, it is characterized in that: the structure of described lifting drive is: the frame above lifting support is arranged installation crossbeam, the two-end part installing crossbeam is movably set with the guide screw mandrel of a vertical direction respectively, the bottom of two guide screw mandrels is equipped with respectively in second tapped through hole at lifting support two ends, the upper end of two guide screw mandrels is respectively arranged with guide worm gear, driven by a two output reduction motor in synchrony with the guide worm screw of two guide worm gear engaged transmission respectively and rotate, two output reduction motor is arranged on to be installed on crossbeam.
4. the tri-roll press machine according to claim 1 or 2 or 3, it is characterized in that: the overlap cutter sweep that a cutting rolled products overlap is set respectively in the frame at the 3rd pressure roller two ends, its concrete structure is: in order to cut the cutting knife of overlap, cutting knife is arranged on knife bar, the outer end of knife bar is provided with sliding sleeve, sliding sleeve movable set is being installed on the horizontal mounting bar in frame, horizontal mounting bar and the 3rd pressure roller arranged in parallel, sliding sleeve can move on horizontal mounting bar, and can rotate around horizontal mounting bar, sliding sleeve is provided with the lock-screw that sliding sleeve can be locked on horizontal mounting bar.
5. the tri-roll press machine according to claim 1 or 2 or 3, it is characterized in that: between the 3rd pressure roller and the second pressure roller, be also provided with the correcting wedge preventing the 3rd pressure roller and the second pressure roller from mutually colliding, the outer end of correcting wedge is provided with the curved boom to a lateral buckling, the bearing block of the second pressure roller end is provided with stay bolt, stay bolt is provided with two locking nuts, curved boom activity to be located on stay bolt and between two locking nuts, curved boom can be locked on stay bolt by two locking nuts, and make between the movable axis bearing of correcting wedge in the 3rd pressure roller end and the bearing block of the second pressure roller end.
6. the tri-roll press machine according to claim 1 or 2 or 3, is characterized in that: in each movable axis bearing, be connected to two lifting rods, and two lifting rods are respectively in the both sides of corresponding screw rod symmetrically.
7. the tri-roll press machine according to claim 1 or 2 or 3, it is characterized in that: the syndeton between adjustment pressing plate and lifting rod is: on lifting rod, be provided with thread segment, thread segment is provided with adjusting nut, and adjusting nut is locked at the outside regulating pressing plate.
8. tri-roll press machine according to claim 4, it is characterized in that: the syndeton of knife bar and sliding sleeve is: knife bar offers elongate holes, roll adjustment screw can move around and can be locked in elongate holes in elongate holes, and described roll adjustment screw is fixedly mounted on sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608712.7U CN204183803U (en) | 2014-10-21 | 2014-10-21 | Tri-roll press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608712.7U CN204183803U (en) | 2014-10-21 | 2014-10-21 | Tri-roll press machine |
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| Publication Number | Publication Date |
|---|---|
| CN204183803U true CN204183803U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420608712.7U Active CN204183803U (en) | 2014-10-21 | 2014-10-21 | Tri-roll press machine |
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| CN (1) | CN204183803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309043A (en) * | 2014-10-21 | 2015-01-28 | 张家港市兰航机械有限公司 | Three-roller calender |
-
2014
- 2014-10-21 CN CN201420608712.7U patent/CN204183803U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309043A (en) * | 2014-10-21 | 2015-01-28 | 张家港市兰航机械有限公司 | Three-roller calender |
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