CN211413182U - Floating type compression roller device capable of efficiently replacing rollers - Google Patents
Floating type compression roller device capable of efficiently replacing rollers Download PDFInfo
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- CN211413182U CN211413182U CN201922266969.4U CN201922266969U CN211413182U CN 211413182 U CN211413182 U CN 211413182U CN 201922266969 U CN201922266969 U CN 201922266969U CN 211413182 U CN211413182 U CN 211413182U
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Abstract
The utility model provides a floating compression roller device that can high-efficiently trade roller, including stopper, orbital base in area, roller frame, compression roller and drive arrangement, orbital base in area, roller frame and compression roller connect gradually under to from last, roller frame and orbital base sliding connection in area, the stopper is used for carrying out the axial spacing to the roller frame with orbital base cooperation, drive arrangement mentions or falls down in the orbital base in area, it is gapped between roller frame and the orbital base in area. When the compression roller normally works, the roller frame is positioned in the long groove of the base with the track, and the height of the long groove is larger than the roller diameter of the vertical roller wheel, so that the roller frame can float up and down in the long groove in the height direction to drive the compression roller to float up and down. The utility model discloses simple structure is exquisite, and the compression roller is high at during operation position precision, can realize high efficiency's roll change operation, has good application promotion prospect.
Description
Technical Field
The utility model belongs to the technical field of the rolling production of cold rolling mill, concretely relates to floating compression roller device that can high-efficiently roll change.
Background
In the cold rolling mill equipment, in order to compact the strip, a compression roller is arranged above the strip, and the compression roller is pressed downwards during operation to tightly press the strip on a guide plate or a lower roller. In the production of modern high-speed rolling mills, the frequency of maintenance and replacement of the rolls is also increasing.
The compression roller generally uses the bolt to close the roller bearing frame on the compression roller support by pneumatic cylinder drive in traditional cold rolling unit, and the compression roller is removed after need dismantling the bolt when overhauing and changing, uses bolt and compression roller support to close when the compression roller resets again. The whole roll changing process is time-consuming and labor-consuming, and the efficiency is extremely low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a floating compression roller device of roller can high-efficiently be traded, high efficiency removes the compression roller and resets.
Therefore, the utility model provides a technical scheme as follows:
the utility model provides a floating compression roller device that can high-efficiently trade roller, includes stopper, orbital base in area, roller frame, compression roller and drive arrangement, orbital base in area, roller frame and compression roller connect gradually under to from last, roller frame and orbital base sliding connection in area, the stopper is used for carrying out the axial spacing to the roller frame with orbital base cooperation, drive arrangement mentions or falls down orbital base in the area, it is gapped between roller frame and the orbital base in area.
One side of the base with the tracks is provided with a limiting plate, the other side of the base with the tracks is provided with a limiting groove, and the limiting groove is matched with the limiting block.
The cross section of the base with the tracks is of an inverted U-shaped structure, the base with the tracks comprises long grooves, roller changing tracks and positioning surfaces, the long grooves are arranged inside the base with the tracks, two side surfaces of the long grooves are guide surfaces, the roller changing tracks are located on the lower surfaces of the long grooves, and the positioning surfaces are located on the lower surfaces of the base with the tracks.
The roller frame comprises a roller frame body, a vertical roller and side rollers, the roller frame body comprises a flat plate and a vertical plate, the cross section of the flat plate connected with the vertical plate is of an inverted T-shaped structure, and the vertical roller and the side rollers are arranged on two sides of the vertical plate symmetrically and are in multiple groups.
The compression roller comprises a roller and bearing seats arranged on two sides of the roller, wherein a handle is arranged on the bearing seat on one side, and the bearing seats are fixedly connected with the roller frame.
The driving device is an oil cylinder, an air cylinder or a motor, and the base with the track is fixedly connected with the driving device.
The width of the two side surfaces of the long groove is equal to the width of the outer tangent surface of the side rollers at the two sides, and the height of the long groove is larger than the roller diameter of the vertical roller.
The vertical plate is provided with a first shaft hole and a convex block, the convex block corresponds to the side rollers one by one, and the vertical rollers are symmetrically arranged on two sides of the vertical plate through a wheel shaft penetrating through the first shaft hole;
the convex blocks are symmetrically arranged on two sides of the vertical plate, grooves and second shaft holes are formed in the convex blocks, the side rollers are arranged in the grooves, the second shaft holes are formed in the upper end and the lower end of each groove, and the vertical rollers and the side rollers are axially vertical.
The utility model has the advantages that:
the utility model provides a floating compression roller device of roller can high-efficient change, when the compression roller normally worked, the roller frame was located the elongated slot of orbital base in area, because the highly roller footpath that is greater than upright running roller of elongated slot for the roller frame can be floated from top to bottom in the elongated slot on the direction of height, drives the compression roller and floats from top to bottom.
When the compression roller presses the strip, the lower surface of the base with the track is tightly attached to the upper surface of the roller frame flat plate to realize positioning in the height direction so as to ensure the levelness tolerance of the compression roller. All side rollers on two sides of the roller frame are tightly attached to guide surfaces on two sides of the long groove, so that the positioning of the compression roller in the rolling direction of the rolling mill is realized, and the parallelism tolerance of the compression roller and other rollers of the rolling mill is ensured.
The utility model discloses a limiting plate is hugged closely to stopper card income in the spacing groove of taking orbital base, roller frame one side, and the opposite side is locked by the stopper, realizes the compression roller at axial location.
The utility model discloses simple structure is exquisite, and the compression roller is high at during operation position precision, can realize high efficiency's roll change operation, has good application promotion prospect.
In order to make the above and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
fig. 2 is a left side view of an embodiment of the present invention;
FIG. 3 is an isometric view of a base with rails;
FIG. 4 is an isometric view of a roll stand and a press roll;
FIG. 5 is a sectional view of the working position of the present invention;
figure 6 the utility model discloses trade the roller position or the compression roller lifts up the cross-sectional view.
In the figure:
description of reference numerals:
1. a limiting block; 2. a base with a track; 3. a roller frame; 4. a compression roller; 5. a drive device; 6. a vertical roller wheel; 7. a side roller; 8. a roll frame body; 9. a long groove; 10. a roll changing track; 11. positioning the surface; 12. a guide surface; 13. a flat plate; 14. a vertical plate; 15. a handle; 16. a first shaft hole; 17. a bump; 18. a groove; 19. a second shaft hole; 20. a limiting groove; 21. a strip of material.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
In the present invention, the upper, lower, left and right sides in the drawings are regarded as the upper, lower, left and right sides of the floating type press roll device capable of efficiently changing rolls described in the present specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Example 1:
this embodiment provides a floating compression roller device that can high-efficiently trade roller, including stopper 1, orbital base 2, roller frame 3, compression roller 4 and drive arrangement 5 in area, drive arrangement 5, orbital base 2, roller frame 3 in area and compression roller 4 from last to connecting gradually down, roller frame 3 and 2 sliding connection of orbital base in area, stopper 1 is used for carrying out the axial spacing with orbital base 2 cooperation to roller frame 3 in area, drive arrangement 5 is in mentioning orbital base 2 in area or dropping, it is gapped between roller frame 3 and the orbital base 2 in area. As shown in fig. 1.
Specifically, the working process or application process of the floating type press roll device capable of efficiently changing the roll provided by the embodiment is as follows:
because a gap is reserved between the roller frame 3 and the base 2 with the track, the roller frame 3 can float up and down, when the compression roller 4 works, the driving device 5 presses down to drive the compression roller 4 to press the strip 21, and the lower surface of the base 2 with the track is tightly attached to the upper surface of the roller frame 3. When the compression roller 4 changes the roller, the driving device 5 lifts the compression roller 4 through the roller frame 3, and the limiting block 1 is taken out from the limiting groove 20. The operator can easily pull the roll stand 3 and the press roll 4 out of the mill.
The utility model discloses simple structure is exquisite, and compression roller 4 is high at during operation position precision, and whole roll change operation high efficiency has good application prospect.
Example 2:
this embodiment provides a floating compression roller device that can high-efficiently trade roller, including stopper 1, orbital base 2, roller frame 3, compression roller 4 and drive arrangement 5 in area, drive arrangement 5, orbital base 2, roller frame 3 in area and compression roller 4 from last to connecting gradually down, stopper 1 is used for carrying out the axial spacing with orbital base 2 cooperation to roller frame 3, drive arrangement 5 is in mentioning orbital base 2 in area or dropping, it is gapped between orbital base 2 in area 3 and the roller frame. As shown in fig. 1 and 2.
One side of the base 2 with the tracks is provided with a limiting plate, the other side of the base is provided with a limiting groove 20, and the limiting groove 20 is matched with the limiting block 1.
The base 2 with the tracks is provided with a limiting plate at the opposite side of the moving-out side of the compression roller 4, the compression roller 4 is provided with a limiting groove 20 at the moving-out side, the limiting block 1 can be clamped into the limiting groove 20 when the compression roller 4 works, and the limiting plate and the limiting block 1 axially lock the roller frame 3. Wherein, the limiting block 1 is a steel rectangular block.
Example 3:
this embodiment provides a floating compression roller device that can high-efficiently trade roller, including stopper 1, orbital base 2, roller frame 3, compression roller 4 and drive arrangement 5 in area, drive arrangement 5, orbital base 2, roller frame 3 in area and compression roller 4 from last to connecting gradually down, stopper 1 is used for carrying out the axial spacing with orbital base 2 cooperation to roller frame 3, drive arrangement 5 is in mentioning orbital base 2 in area or dropping, it is gapped between orbital base 2 in area 3 and the roller frame.
As shown in fig. 3, the cross section of the base 2 with the track is an inverted U-shaped structure, the base 2 with the track includes a long groove 9, a roller changing track 10 and a positioning surface 11, the long groove 9 is disposed inside the base 2 with the track, two side surfaces of the long groove 9 are guide surfaces 12, the roller changing track 10 is located on a lower surface of the long groove 9, and the positioning surface 11 is located on a lower surface of the base 2 with the track.
The base 2 with the track is of an inverted U-shaped structure, the upper surface of the base is connected with a drive through a bolt, a fine-machined long groove 9 is arranged in the base, two side surfaces of the long groove 9 are guide surfaces 12 of the side rollers 7, the width of the two side surfaces of the long groove 9 is equal to the width of the outer tangent surfaces of the side rollers 7, the height of the long groove 9 is larger than the roller diameter of the vertical roller 6, the lower surface of the long groove 9 is a fine-machined roller changing track 10, the inverted U-shaped lower surface of the base 2 with the track is a fine-machined positioning surface 11, and the upper surface of a flat plate 13 of the roller frame 3 is tightly attached to the positioning surface 11 when the press roller 4.
Example 4:
this embodiment provides a floating compression roller device that can high-efficiently trade roller, including stopper 1, orbital base 2, roller frame 3, compression roller 4 and drive arrangement 5 in area, drive arrangement 5, orbital base 2, roller frame 3 in area and compression roller 4 from last to connecting gradually down, stopper 1 is used for carrying out the axial spacing with orbital base 2 cooperation to roller frame 3, drive arrangement 5 is in mentioning orbital base 2 in area or dropping, it is gapped between orbital base 2 in area 3 and the roller frame.
The roller frame 3 comprises a roller frame body 8, vertical rollers 6 and side rollers 7, the roller frame body 8 comprises a flat plate 13 and a vertical plate 14, the cross section of the flat plate 13 connected with the vertical plate 14 is of an inverted T-shaped structure, and the vertical rollers 6 and the side rollers 7 are arranged on two sides of the vertical plate 14 in a multi-group mode and are symmetrically arranged on two sides of the vertical plate 14.
As shown in fig. 4, the roller frame 3 is composed of a vertical roller 6, a side roller 7 and a roller frame body 8, wherein the roller frame body 8 is of an inverted T-shaped structure, the lower surface of a flat plate 13 is fixed with a bearing seat of a press roller 4 through a bolt, a plurality of first shaft holes 16 and a plurality of symmetrically distributed convex blocks 17 are processed on two sides of a vertical plate 14 on the upper portion of the roller frame body 8, and a groove 18 and a second shaft hole 19 are processed on the convex blocks 17. The vertical rollers 6 are symmetrically arranged at two sides of the vertical plate 14 through wheel shafts, and the side rollers 7 are symmetrically arranged in the grooves 18 of the lugs 17 at two sides through wheel shafts.
The compression roller 4 consists of a roller and bearing blocks on two sides, wherein a handle 15 is arranged on the bearing block on the moving-out side and is used for pushing and pulling the compression roller 4 in and out during roller change. The bearing seat of the press roll 4 is connected with the roll frame 3 through a bolt.
Example 5:
this embodiment provides a floating compression roller device that can high-efficiently trade roller, including stopper 1, orbital base 2 in area, roll rack 3, compression roller 4 and drive arrangement 5.
The compression roller 4 consists of a roller and bearing blocks on two sides, wherein a handle 15 is arranged on the bearing block on the moving-out side and is used for pushing and pulling the compression roller 4 in and out during roller change. The bearing seat of the press roll 4 is connected with the roll frame 3 through a bolt.
The roller frame 3 comprises vertical roller wheel 6, side roller wheel 7 and roller frame body 8, and wherein roller frame body 8 is the structure of falling T, and it is fixed with the bearing frame of compression roller 4 that the lower surface of flat board 13 passes through the bolt, and 14 both sides processing of the riser on 8 upper portions of roller frame body have a plurality of first shaft holes 16, and a plurality of lugs 17 of symmetric distribution in addition, processing fluted 18 and second shaft hole 19 on the lug 17. The vertical rollers 6 are symmetrically arranged at two sides of the vertical plate 14 through wheel shafts, and the side rollers 7 are symmetrically arranged in the grooves 18 of the lugs 17 at two sides through wheel shafts.
The base 2 with the track is of an inverted U-shaped structure, the upper surface of the base is connected with the driving device 5 through bolts, a fine-machined long groove 9 is arranged in the base, two side surfaces of the long groove 9 are guide surfaces 12 of the side rollers 7, the width of the two side surfaces of the long groove is equal to the width of outer tangent surfaces of the side rollers 7 on the two sides, the height of the long groove 9 is larger than the roller diameter of the vertical roller 6, the lower surface of the long groove 9 is a fine-machined roller changing track 10, the inverted U-shaped lower surface of the base 2 with the track is a fine-machined positioning surface 11, and the upper surface of a flat plate 13 of the roller frame 3 is tightly attached to the positioning surface 11 when the press roller.
The base 2 with the track is provided with a limiting plate at the opposite side of the moving-out side of the press roller 4, the press roller 4 is provided with a limiting groove 20 at the moving-out side, the limiting block 1 can be clamped into the limiting groove 20 when the press roller 4 works, and the limiting plate and the limiting block 1 axially lock the roller frame 33. The limiting block 1 is a steel rectangular block.
The driving device 5 is located above the base 2 with the track, and can be an oil cylinder, an air cylinder or a motor, and is used for lifting and dropping the base 2 with the track.
The working principle is as follows:
when the compression roller 4 normally works, the roller frame 3 is positioned in the long groove 9 of the base 2 with the track, and the height of the long groove 9 is larger than the roller diameter of the vertical roller 6, so that the roller frame 3 can float up and down in the long groove 9 in the height direction to drive the compression roller 4 to float up and down. When the press roll 4 does not press the strip 21, the vertical roller 6 falls on the surface of the roll changing track 10, as shown in the cross-sectional view of the lifting and roll changing position of the press roll 4 in fig. 6.
The driving device 5 drives the base 2 of the belt track to press downwards, and after the press roller 4 contacts with the surface of the strip 21, the driving device 5 continues to press downwards, at this time, the lower surface of the base 2 with the belt track is tightly attached to the upper surface of the flat plate 13 of the roller frame 3 to realize positioning in the height direction so as to ensure the levelness tolerance of the press roller 4, and the vertical roller 6 is separated from the surface of the roller changing track 10, as shown in the working position cross-sectional view of the press roller 4 in fig. 5. All the side rollers 7 on both sides of the roller frame 3 are tightly attached to the guide surfaces 12 on both sides of the elongated slot 9, so that the positioning of the compression roller 4 in the rolling direction of the rolling mill is realized, and the parallelism tolerance of the compression roller 4 and other rollers of the rolling mill is ensured, as shown in fig. 2. The limiting block 1 is clamped into a limiting groove 20 of the base 2 with the track, one side of the roller frame 3 is tightly attached to the limiting plate, and the other side of the roller frame is locked by the limiting block 1, so that the axial positioning of the pressing roller 4 is realized.
When the press roll 4 needs to be changed, the driving device 5 lifts the tracked base 2, the vertical roller 6 falls on the surface of the roll changing track 10, the upper surface of the flat plate 13 of the roll stand 3 is separated from the lower surface of the tracked base 2, and the cross section of the press roll 4 in the lifting and roll changing position of fig. 6 shows. The limiting block 1 is taken out of the limiting groove 20, and at the moment, an operator can easily pull the whole roller frame 3 and the whole pressing roller 4 out of the base 2 with the tracks through the handle 15 on the bearing seat of the pressing roller 4, and the base is lifted away by using a workshop crane. When the replaced compression roller 4 is to be reset, the workshop crane is used for integrally hoisting the roller frame 3 and the compression roller 4 to the side of the base 2 with the track, the roller frame 3 is aligned to the fine machining elongated slot 9 in the base, and an operator can easily push the compression roller 4 into the base for resetting. After resetting, the limiting block 1 is inserted into the limiting groove 20, and the compression roller 4 can start to work without adjustment.
The compression roller 4 with the structure has high position precision during working, and the whole roller changing operation is rapid and efficient.
Example 6:
the embodiment provides a method for using a floating type compression roller device capable of efficiently replacing rollers, when a compression roller 4 works normally, a vertical plate 14 of a roller frame 3 is positioned in an elongated slot 9 of a base 2 with a track, a gap between the vertical plate and the elongated slot 9 enables the roller frame 3 to float up and down along the height direction of the elongated slot 9 and drives the compression roller 4 to float up and down, and at the moment, a vertical roller 6 falls on the surface of the roller replacing track 10;
when the compression roller 4 presses the strip 21, the driving device 5 drives the base 22 of the belt track to press downwards, after the compression roller 4 is contacted with the surface of the strip 21, the driving device 5 continues to press downwards, at the moment, the lower surface of the base 2 with the track is tightly attached to the upper surface of the flat plate 13 of the roller frame 3, the positioning in the height direction is realized, the levelness tolerance of the compression roller 4 is ensured, the vertical roller wheel 6 is separated from the roller changing track 10, all the side roller wheels 7 are tightly attached to the guide surfaces 12 on the two sides of the long groove 9, the positioning of the compression roller 4 in the rolling direction of the rolling mill is realized, and the parallelism tolerance of.
Example 7:
on the basis of embodiment 6, this embodiment provides a method for using a floating type compression roller device capable of efficiently replacing rollers, when a compression roller 4 needs to replace rollers, a driving device 5 lifts a base 2 with a track, at the moment, a vertical roller 6 falls on the surface of a roller replacement track 10, the upper surface of a flat plate 13 of a roller frame 3 is separated from a positioning surface 11 of the base 2 with the track, a limiting block 1 is taken out, and then the whole roller frame 3 and the compression roller 4 are pulled out of the base 2 with the track and are lifted away by a workshop crane;
when the replaced compression roller 4 is reset, the workshop crane is used for integrally hoisting the roller frame 3 and the compression roller 4 to the side of the base 2 with the track, the vertical plate 14 of the roller frame 3 is aligned to the long groove 9 in the base, the compression roller 4 is pushed to reset, the limiting block 1 is inserted into the limiting groove 20, and the roller replacement is completed.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (8)
1. The utility model provides a floating compression roller device that can high-efficiently roll change which characterized in that: including stopper (1), orbital base (2), roller frame (3), compression roller (4) and drive arrangement (5) in area, drive arrangement (5), orbital base (2), roller frame (3) in area and compression roller (4) are from last to connecting gradually down, roller frame (3) and orbital base (2) sliding connection in area, stopper (1) are used for carrying out the axial spacing with orbital base (2) cooperation to roller frame (3), drive arrangement (5) are in mentioning or falling down orbital base (2) in area, it is gapped between roller frame (3) and the orbital base (2) in area.
2. A floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: one side of the base (2) with the track is provided with a limiting plate, the other side of the base is provided with a limiting groove (20), and the limiting groove (20) is matched with the limiting block (1).
3. A floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: the cross section of the base (2) with the track is of an inverted U-shaped structure, the base (2) with the track comprises a long groove (9), a roller changing track (10) and a positioning surface (11), the long groove (9) is arranged inside the base (2) with the track, two side surfaces of the long groove (9) are guide surfaces (12), the roller changing track (10) is located on the lower surface of the long groove (9), and the positioning surface (11) is located on the lower surface of the base (2) with the track.
4. A floating pressure roller device capable of efficiently changing rollers according to claim 3, characterized in that: the roller frame (3) comprises a roller frame body (8), vertical rollers (6) and side rollers (7), the roller frame body (8) comprises a flat plate (13) and a vertical plate (14), the cross section of the flat plate (13) connected with the vertical plate (14) is of an inverted T-shaped structure, and the vertical rollers (6) and the side rollers (7) are arranged on two sides of the vertical plate (14) in a multi-group and symmetrical mode.
5. A floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: the compression roller (4) comprises a roller and bearing seats arranged on two sides of the roller, wherein a handle (15) is arranged on the bearing seat on one side, and the bearing seats are fixedly connected with the roller frame (3).
6. A floating pressure roller device capable of efficiently changing rollers according to claim 1, characterized in that: the driving device (5) is an oil cylinder, an air cylinder or a motor, and the base (2) with the track is fixedly connected with the driving device (5).
7. A floating pressure roller device capable of efficiently changing rollers as claimed in claim 4, characterized in that: the width of two side surfaces of the long groove (9) is equal to the width of the outer tangent surface of the side rollers (7) at two sides, and the height of the long groove (9) is greater than the roller diameter of the vertical roller (6).
8. A floating pressure roller device capable of efficiently changing rollers as claimed in claim 4, characterized in that: the vertical plate (14) is provided with a first shaft hole (16) and convex blocks (17), the convex blocks (17) correspond to the side rollers (7) one by one, and the vertical rollers (6) are symmetrically arranged on two sides of the vertical plate (14) through a wheel shaft penetrating through the first shaft hole (16);
the vertical plate is characterized in that the convex blocks (17) are symmetrically arranged on two sides of the vertical plate (14), grooves (18) and second shaft holes (19) are formed in the convex blocks (17), the side rollers (7) are arranged in the grooves (18), the second shaft holes (19) are formed in the upper end and the lower end of the grooves (18), and the vertical rollers (6) are axially vertical to the side rollers (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266969.4U CN211413182U (en) | 2019-12-17 | 2019-12-17 | Floating type compression roller device capable of efficiently replacing rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266969.4U CN211413182U (en) | 2019-12-17 | 2019-12-17 | Floating type compression roller device capable of efficiently replacing rollers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211413182U true CN211413182U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922266969.4U Active CN211413182U (en) | 2019-12-17 | 2019-12-17 | Floating type compression roller device capable of efficiently replacing rollers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211413182U (en) |
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2019
- 2019-12-17 CN CN201922266969.4U patent/CN211413182U/en active Active
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