CN221051135U - Hollow bottom roller for formation production line - Google Patents
Hollow bottom roller for formation production line Download PDFInfo
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- CN221051135U CN221051135U CN202322600271.8U CN202322600271U CN221051135U CN 221051135 U CN221051135 U CN 221051135U CN 202322600271 U CN202322600271 U CN 202322600271U CN 221051135 U CN221051135 U CN 221051135U
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- hollowed
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- roller body
- grooves
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000011888 foil Substances 0.000 claims abstract description 56
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000010297 mechanical methods and process Methods 0.000 claims 2
- 238000005498 polishing Methods 0.000 claims 1
- 230000008093 supporting effect Effects 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000009835 boiling Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
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- Rolls And Other Rotary Bodies (AREA)
Abstract
The utility model relates to a hollowed-out bottom roller for a formation production line, which comprises a hollow roller body, wherein a plurality of hollowed-out groove groups are arranged on the circumferential surface of the roller body, the hollowed-out groove groups are distributed at equal intervals along the axis of the roller body, the hollowed-out groove groups comprise a plurality of hollowed-out grooves, the hollowed-out grooves are distributed at equal intervals along the circumference by taking the axis of the roller body as the circle center, and two adjacent hollowed-out groove groups are distributed at staggered positions. In this scheme set up a plurality of fretwork groove groups in the side of roll body to be equipped with a plurality of fretwork grooves in every fretwork groove group, can reduce the weight of backing roll through the setting of fretwork groove, and then can drive the backing roll and rotate when making the foil advance around the backing roll, reduce the frictional force between foil and the backing roll. The hollow groove groups are distributed on the roller body at equal intervals, so that the supporting positions of the foil on the roller body are distributed more uniformly, and the foil supporting effect is better.
Description
Technical Field
The utility model relates to the technical field of formation foil production, in particular to a hollowed-out bottom roller for a formation production line.
Background
The corrosion foil can be converted into the formation foil after formation, but because the corrosion foil can be corroded by acid liquor in the production process, the acid liquor used in the corrosion process stays on the surface of the corrosion foil after the corrosion foil is produced, and the acid liquor remained on the surface of the corrosion foil can influence the formation effect when the formation production is carried out, so that pretreatment is needed during the formation production, the acid liquor remained on the corrosion foil is removed, and the influence on the production effect of the formation foil is avoided. The traditional pretreatment method is to put the corrosion foil into pure water for boiling, take away the acid liquor on the surface of the corrosion foil by using the boiling water, and the bottom of the waste water tank is provided with a bottom roller for guiding the corrosion foil, the bottom roller in the boiling water tank is usually a common engineering plastic roller at present, the bottom roller made of the material is difficult to resist long-time high-temperature impact, and serious deformation and damage are easy to occur after a period of use, so that normal production can be influenced. In order to avoid deformation of the bottom roller, the prior art changes the material of the bottom roller into a temperature-resistant stainless steel material according to the original structural design of the bottom roller, and the change of the material is found in the production process, so that the weight of the bottom roller can be increased, the bottom roller is difficult to drive to rotate when the foil moves, the friction force between the foil and the bottom roller can be increased, and the weight of the foil can be influenced.
Disclosure of utility model
The utility model provides a hollowed bottom roller for a formation production line, which aims to solve the problems that in the prior art, the weight of a bottom roller made of stainless steel is increased, so that a foil is difficult to drive the bottom roller to rotate when moving, friction force between the foil and the bottom roller is increased, and the weight of the foil is influenced. The scheme sets up the multiunit hollow groove on stainless steel backing roll, can be when reducing backing roll weight, can also drive the backing roll and rotate when making the foil motion.
The technical scheme adopted by the utility model is as follows: the utility model provides a fretwork backing roll for formation production line, includes hollow roll body, and the circumference of roll body is equipped with a plurality of fretwork groove group, and a plurality of fretwork groove group is the equidistance along the axis of roll body and arranges, includes a plurality of fretwork groove in the fretwork groove group, and a plurality of fretwork groove uses the axis of roll body as the centre of a circle and is circumference equidistance and distributes, dislocation between two adjacent fretwork groove groups arranges.
In this scheme set up a plurality of fretwork groove groups in the side of roll body to be equipped with a plurality of fretwork grooves in every fretwork groove group, can reduce the weight of backing roll through the setting of fretwork groove, and then can drive the backing roll and rotate when making the foil advance around the backing roll, reduce the frictional force between foil and the backing roll. The hollow groove groups are distributed on the roller body at equal intervals, so that the supporting positions of the foil on the roller body are distributed more uniformly, and the foil supporting effect is better.
Preferably, the roller further comprises a bearing, wherein the two ends of the roller body are respectively provided with a mounting groove, and the bearing is positioned in the mounting grooves. After the bearing is arranged, the roller body is rotationally connected with the boiling water tank through the bearing, the bearing can further reduce friction force between the roller body and the boiling water tank during rotation, and the foil can drive the roller body to rotate during movement around the roller body more conveniently.
Preferably, the distance L between two adjacent hollow groove groups along the axis direction of the bottom roller is 7mm-9mm. In the same hollow groove group, the distance d between two adjacent hollow grooves is 7mm-9mm. When the foil moves around the bottom roller, enough friction force is needed between the foil and the bottom roller to enable the foil to drive the bottom roller to rotate, and in order to ensure enough friction force between the foil and the bottom roller, enough contact area between the foil and the bottom roller is required to be ensured. The experiment shows that when the distance L between two adjacent hollow groove groups along the axis direction of the bottom roller is more than 7mm-9mm. In the same hollowed-out groove group, when the distance d between two adjacent hollowed-out grooves is 7mm-9mm, the foil can be ensured to drive the bottom roller to smoothly rotate when advancing. When the distance L between two adjacent hollow groove groups along the axis direction of the bottom roller is less than 7mm; in the same hollowed-out groove group, when the distance d between two adjacent hollowed-out grooves is smaller than 7mm, the friction force between the foil and the bottom roller is insufficient due to insufficient contact area between the foil and the bottom roller, so that the foil is difficult to drive the bottom roller; when the distance L between two adjacent hollow groove groups along the axis direction of the bottom roller is more than 9mm; in the same hollowed-out groove group, when the distance d between two adjacent hollowed-out grooves is larger than 9mm, the foil is difficult to drive the bottom roller because of the overlarge weight of the bottom roller.
Preferably, when two adjacent hollow groove groups are arranged in a staggered manner, the two adjacent hollow groove groups are in a direction parallel to the axis of the bottom roller, and a gap between two adjacent hollow grooves in one hollow groove group is positioned in the middle of the corresponding hollow groove in the other hollow groove group. When the staggered arrangement that the gaps between two adjacent hollow grooves in one hollow groove group are positioned in the middle of the hollow grooves in the other hollow groove group is adopted, the side strength of the bottom roller is higher, and deformation is less prone to occurring.
Preferably, the hollow grooves are rectangular, and the rectangular hollow grooves are uniformly distributed on the bottom roller and then are processed.
Preferably, the shape of the hollowed-out groove is a parallelogram, and the bottom roller of the hollowed-out groove is a parallelogram, which has higher strength than the bottom roller of the hollowed-out groove, because the oblique side of the parallelogram can disperse the force, so that the supporting strength of the oblique side of the parallelogram is higher than that of the straight side of the rectangle.
Preferably, after the side surface of the roller body is unfolded, the oblique sides of the two parallelogram hollow grooves in the two adjacent hollow groove groups are parallel. In order to facilitate machining of the bottom roller with the hollow grooves being parallelograms, the hollow grooves on the side face of the roller body are arranged to be parallel to the oblique sides of the two parallelograms in the two adjacent hollow groove groups, and the direction of the bottom roller is prevented from being changed when the side face of the roller body is grooved.
Preferably, after the side surface of the roller body is unfolded, the oblique sides of the two parallelogram hollow grooves in the two adjacent hollow groove groups are intersected. Namely, the inclined directions of the parallelogram hollow grooves in two adjacent hollow groove groups are opposite, and at the moment, the component forces along the direction of the parallelogram oblique sides can be mutually offset when being dispersed, so that the supporting strength of the bottom roller is higher.
Preferably, the surface of the roller body is provided with a waterproof coating. The setting of waterproof coating can further reduce the bottom roll and boil the water contact in the basin, further reduces the influence to the bottom roll that is in boiling water for a long time.
Preferably, limiting protrusions are arranged at two ends of the roller body and used for preventing the foil from moving on the bottom roller. When the foil moves on the bottom roller along the axial direction of the roller body, the foil can be abutted with the limiting protrusion on the roller body, and the limiting protrusion plays a role in limiting the movement of the foil.
Compared with the prior art, the utility model has the beneficial effects that: in this scheme set up a plurality of fretwork groove groups in the side of roll body to be equipped with a plurality of fretwork grooves in every fretwork groove group, can reduce the weight of backing roll through the setting of fretwork groove, and then can drive the backing roll and rotate when making the foil advance around the backing roll, reduce the frictional force between foil and the backing roll. In addition, still be provided with the mounting groove at the both ends of foundation roller, the bearing that sets up in the mounting groove can reduce the foundation roller when rotating with the frictional force between the waste water groove, the foundation roller of being convenient for more rotates.
Drawings
FIG. 1 is a cross-sectional view of a hollowed-out bottom roll for a formation line of the present utility model;
FIG. 2 is an enlarged view of the portion A in FIG. 1 of a hollowed-out bottom roller for a formation line according to the present utility model;
FIG. 3 is a cross-sectional view of an embodiment 4 of a hollowed-out bottom roll for a formation line according to the present utility model;
fig. 4 is a cross-sectional view of an embodiment 5 of a hollowed-out bottom roll for a formation line according to the present utility model.
Wherein, the roller body-1; a mounting groove-101; the hollowed-out groove group-2; the groove 201 is hollowed out.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for better illustration of the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
Example 1
An embodiment 1 of a hollow bottom roller for a formation production line is shown in fig. 1, and the hollow bottom roller comprises a hollow roller body 1, wherein a plurality of hollow groove groups 2 are arranged on the circumferential surface of the roller body 1, the plurality of hollow groove groups 2 are distributed at equal intervals along the axis of the roller body 1, the hollow groove groups 2 comprise a plurality of hollow grooves 201, the plurality of hollow grooves 201 are distributed at equal intervals along the circumference with the axis of the roller body 1 as a circle center, and two adjacent hollow groove groups 2 are distributed at staggered positions.
The beneficial effects of this embodiment are: in this scheme set up a plurality of fretwork groove group 2 in the side of roll body 1 to be equipped with a plurality of fretwork groove 201 in every fretwork groove group 2, can reduce the weight of backing roll through the setting of fretwork groove 201, and then can drive the backing roll and rotate when making the foil advance around the backing roll, reduce the frictional force between foil and the backing roll. The hollow groove groups 2 are distributed on the roller body 1 at equal intervals, so that the supporting positions of the foil on the roller body 1 are distributed more uniformly, and the foil supporting effect is better.
Example 2
An embodiment 2 of a hollowed-out bottom roller for a formation production line is shown in fig. 1-2, and comprises a hollow roller body 1, wherein a plurality of hollowed-out groove groups 2 are arranged on the circumferential surface of the roller body 1, the plurality of hollowed-out groove groups 2 are distributed at equal intervals along the axis of the roller body 1, the hollowed-out groove groups 2 comprise a plurality of hollowed-out grooves 201, the plurality of hollowed-out grooves 201 are distributed at equal intervals along the circumference with the axis of the roller body 1 as the circle center, and two adjacent hollowed-out groove groups 2 are distributed at staggered positions.
Specifically, the roller body comprises a bearing, wherein the two ends of the roller body 1 are provided with mounting grooves 101, and the bearing is positioned in the mounting grooves 101.
Specifically, the distance L between two adjacent hollow groove groups 2 along the axis direction of the bottom roller is 7mm-9mm. In the same hollow groove group 2, the distance d between two adjacent hollow grooves 201 is 7mm-9mm.
Specifically, when two adjacent hollow groove groups 2 are arranged in a staggered manner, the gaps between two adjacent hollow grooves 201 in one hollow groove group 2 are positioned in the middle of the corresponding hollow groove 201 in the other hollow groove group 2 in the direction parallel to the axis of the bottom roller.
Specifically, the surface of the roller body 1 is provided with a waterproof coating. Limiting protrusions are arranged at two ends of the roller body 1 and used for preventing the foil from moving on the roller body 1.
Specifically, the hollow groove 201 is rectangular in shape.
The beneficial effects of this embodiment are: after the bearing is arranged, the roller body 1 is rotationally connected with the boiling water tank through the bearing, the bearing can further reduce friction force between the roller body 1 and the boiling water tank during rotation, and the foil can drive the roller body 1 to rotate during movement around the roller body 1 more conveniently. When the distance L between two adjacent hollow groove groups 2 along the axis direction of the bottom roller is more than 7mm-9mm. In the same hollowed-out groove group 2, when the distance d between two adjacent hollowed-out grooves 201 is 7mm-9mm, the bottom roller can be driven to smoothly rotate when the foil advances. The staggered arrangement that the gaps between two adjacent hollow grooves 201 in one hollow groove group 2 are positioned in the middle of the hollow grooves 201 in the other hollow groove group 2 is adopted, so that the side strength of the bottom roller is higher, and deformation is less prone to occurring. The arrangement of the waterproof coating can further reduce the adverse effect on the bottom roller caused by long-time placement in boiling water. The limit projection serves to limit the movement of the foil. Rectangular hollowed-out grooves 201 are uniformly distributed on the bottom roller and then are processed.
Example 3
An embodiment 3 of a hollowed-out bottom roller for a formation production line comprises a hollow roller body 1, wherein a plurality of hollowed-out groove groups 2 are arranged on the circumferential surface of the roller body 1, the plurality of hollowed-out groove groups 2 are distributed at equal intervals along the axis of the roller body 1, the hollowed-out groove groups 2 comprise a plurality of hollowed-out grooves 201, the plurality of hollowed-out grooves 201 are distributed at equal intervals along the circumference with the axis of the roller body 1 as the circle center, and two adjacent hollowed-out groove groups 2 are distributed in a staggered mode.
Specifically, the roller body comprises a bearing, wherein the two ends of the roller body 1 are provided with mounting grooves 101, and the bearing is positioned in the mounting grooves 101.
Specifically, the distance L between two adjacent hollow groove groups 2 along the axis direction of the bottom roller is 7mm-9mm. In the same hollow groove group 2, the distance d between two adjacent hollow grooves 201 is 7mm-9mm.
Specifically, when two adjacent hollow groove groups 2 are arranged in a staggered manner, the gaps between two adjacent hollow grooves 201 in one hollow groove group 2 are positioned in the middle of the corresponding hollow groove 201 in the other hollow groove group 2 in the direction parallel to the axis of the bottom roller.
Specifically, the surface of the roller body 1 is provided with a waterproof coating. Limiting protrusions are arranged at two ends of the roller body 1 and used for preventing the foil from moving on the roller body 1.
Specifically, the hollow groove 201 is in the shape of a parallelogram.
The beneficial effects of this embodiment are: the bottom roller of the shape of the hollowed out groove 201 of this embodiment is a parallelogram with higher strength than that of embodiment 2 because the hypotenuse of the parallelogram can distribute the force so that the hypotenuse of the parallelogram has higher supporting strength than the straight edge of the rectangle.
Example 4
An embodiment 4 of a hollowed-out bottom roller for a formation production line is shown in fig. 3, and comprises a hollow roller body 1, wherein a plurality of hollowed-out groove groups 2 are arranged on the circumferential surface of the roller body 1, the plurality of hollowed-out groove groups 2 are distributed at equal intervals along the axis of the roller body 1, the hollowed-out groove groups 2 comprise a plurality of hollowed-out grooves 201, the plurality of hollowed-out grooves 201 are distributed at equal intervals along the circumference with the axis of the roller body 1 as the center of a circle, and two adjacent hollowed-out groove groups 2 are distributed at staggered positions.
Specifically, the roller body comprises a bearing, wherein the two ends of the roller body 1 are provided with mounting grooves 101, and the bearing is positioned in the mounting grooves 101.
Specifically, the distance L between two adjacent hollow groove groups 2 along the axis direction of the bottom roller is 7mm-9mm. In the same hollow groove group 2, the distance d between two adjacent hollow grooves 201 is 7mm-9mm.
Specifically, when two adjacent hollow groove groups 2 are arranged in a staggered manner, the gaps between two adjacent hollow grooves 201 in one hollow groove group 2 are positioned in the middle of the corresponding hollow groove 201 in the other hollow groove group 2 in the direction parallel to the axis of the bottom roller.
Specifically, the surface of the roller body 1 is provided with a waterproof coating. Limiting protrusions are arranged at two ends of the roller body 1 and used for preventing the foil from moving on the roller body 1.
Specifically, the hollow grooves 201 are in a parallelogram shape, and when the side surfaces of the bottom roller are unfolded, the oblique sides of the two parallelogram hollow grooves 201 in the two adjacent hollow groove groups 2 are parallel.
The beneficial effects of this embodiment are: the oblique sides of the two parallelogram hollow grooves 201 in the two adjacent hollow groove groups 2 are parallel, so that the bottom roller is more convenient to process.
Example 5
An embodiment 5 of a hollowed-out bottom roller for a formation production line is shown in fig. 4, and comprises a hollow roller body 1, wherein a plurality of hollowed-out groove groups 2 are arranged on the circumferential surface of the roller body 1, the plurality of hollowed-out groove groups 2 are distributed at equal intervals along the axis of the roller body 1, the hollowed-out groove groups 2 comprise a plurality of hollowed-out grooves 201, the plurality of hollowed-out grooves 201 are distributed at equal intervals along the circumference with the axis of the roller body 1 as the center of a circle, and two adjacent hollowed-out groove groups 2 are distributed at staggered positions.
Specifically, the roller body comprises a bearing, wherein the two ends of the roller body 1 are provided with mounting grooves 101, and the bearing is positioned in the mounting grooves 101.
Specifically, the distance L between two adjacent hollow groove groups 2 along the axis direction of the bottom roller is 7mm-9mm. In the same hollow groove group 2, the distance d between two adjacent hollow grooves 201 is 7mm-9mm.
Specifically, when two adjacent hollow groove groups 2 are arranged in a staggered manner, the gaps between two adjacent hollow grooves 201 in one hollow groove group 2 are positioned in the middle of the corresponding hollow groove 201 in the other hollow groove group 2 in the direction parallel to the axis of the bottom roller.
Specifically, the surface of the roller body 1 is provided with a waterproof coating. Limiting protrusions are arranged at two ends of the roller body 1 and used for preventing the foil from moving on the roller body 1.
Specifically, the hollow groove 201 is in a parallelogram shape, and when the side surface of the bottom roller is unfolded, the oblique sides of the two parallelogram hollow grooves 201 in the two adjacent hollow groove groups 2 intersect, that is, the oblique directions of the parallelogram hollow grooves 201 in the two adjacent hollow groove groups 2 are opposite.
The beneficial effects of this embodiment are: the bottom roller in this embodiment has a higher strength than that in embodiment 3 because the component forces in the directions of the oblique sides of the parallelogram cancel each other out when dispersed.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. A fretwork backing roll for formation production line, its characterized in that includes hollow roll body (1) the circumference of roll body (1) is equipped with a plurality of fretwork groove group (2), and a plurality of fretwork groove group (2) are followed the axis of roll body (1) is the equidistance and arranges, including a plurality of fretwork groove (201) in fretwork groove group (2), a plurality of fretwork groove (201) use the axis of roll body (1) is circumference equidistance and distributes as the centre of a circle, adjacent two dislocation between fretwork groove group (2).
2. The hollowed-out bottom roller for the formation production line according to claim 1, further comprising bearings, wherein mounting grooves (101) are formed in two ends of the roller body (1), and the bearings are located in the mounting grooves (101).
3. The hollowed-out bottom roll for a formation production line according to claim 2, wherein the distance L between two adjacent hollowed-out groove groups (2) along the axis direction of the bottom roll is 7mm-9mm.
4. A hollow bottom roll for a chemical-mechanical polishing line according to claim 3, characterized in that in the same hollow groove group (2), the distance d between two adjacent hollow grooves (201) is 7mm-9mm.
5. The hollow-out bottom roll for a chemical-mechanical process line according to claim 4, wherein the hollow-out groove (201) is rectangular in shape.
6. The hollow-out bottom roll for a chemical-mechanical process line according to claim 4, wherein the hollow-out groove (201) is parallelogram-shaped.
7. The hollow-out bottom roll for a formation line according to claim 6, wherein the oblique sides of two parallelogram hollow-out grooves (201) in two adjacent hollow-out groove groups (2) are parallel after the side surfaces of the roll body (1) are unfolded.
8. The hollow-out bottom roll for a formation line according to claim 6, wherein the oblique sides of two parallelogram hollow-out grooves (201) in two adjacent hollow-out groove groups (2) intersect after the side surface of the roll body (1) is unfolded.
9. The hollow-out bottom roller for a formation line according to claim 1, characterized in that the surface of the roller body (1) is provided with a waterproof coating.
10. The hollowed-out bottom roller for a formation production line according to claim 1, wherein limiting protrusions are arranged at two ends of the side surface of the roller body (1) to prevent the foil from moving on the roller body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322600271.8U CN221051135U (en) | 2023-09-22 | 2023-09-22 | Hollow bottom roller for formation production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322600271.8U CN221051135U (en) | 2023-09-22 | 2023-09-22 | Hollow bottom roller for formation production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221051135U true CN221051135U (en) | 2024-05-31 |
Family
ID=91204233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322600271.8U Active CN221051135U (en) | 2023-09-22 | 2023-09-22 | Hollow bottom roller for formation production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221051135U (en) |
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2023
- 2023-09-22 CN CN202322600271.8U patent/CN221051135U/en active Active
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