CN216039977U - Solidification forming device - Google Patents
Solidification forming device Download PDFInfo
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- CN216039977U CN216039977U CN202121393987.XU CN202121393987U CN216039977U CN 216039977 U CN216039977 U CN 216039977U CN 202121393987 U CN202121393987 U CN 202121393987U CN 216039977 U CN216039977 U CN 216039977U
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Abstract
The utility model relates to a coagulation forming device, which comprises a coagulation bath, a spinneret and a guide roller. Wherein the spinneret is arranged in the coagulating bath tank, so that the spinneret can be positioned in the coagulating bath liquid after the coagulating bath liquid is injected into the coagulating bath tank; the lower edge of the roller body of the guide roller extends into the coagulating bath tank, so that after the coagulating bath liquid is injected into the coagulating bath tank, the lower edge of the roller body of the guide roller can be immersed into the coagulating bath liquid; wherein, the position that the roll body lower edge of guide roll was located is higher than the position that the spinneret was located, and the relative position between spinneret, the guide roll satisfies: the fiber tow between the spinning nozzle and the guide roller has a gradient of 1-5 DEG along the running direction. The method is mainly used for designing the components of the solidification forming device, reasonably distributing the components, avoiding the phenomena of broken filaments, broken filaments and bifurcation generated in the solidification process of the fibers and avoiding the phenomenon of non-uniform fibers caused by non-uniform temperature concentration field of the solidification bath solution.
Description
Technical Field
The utility model relates to the technical field of carbon fibers, in particular to a solidification forming device.
Background
The polyacrylonitrile-based carbon fiber has the advantages of high tensile strength, high tensile modulus, low density, ablation resistance, corrosion resistance and the like, and is widely applied to the advanced technical fields of aerospace, aviation, ocean, nuclear power and the like.
Polyacrylonitrile fibers (known as precursor fibers by those skilled in the art) are precursors for producing polyacrylonitrile-based carbon fibers, and the preparation technology of precursor fibers is the core of the preparation of polyacrylonitrile-based carbon fibers. Factors such as the structure of the precursor, various defects, appearance quality and the like determine the performance, quality and even cost of the final carbon fiber to a great extent. Wherein, the production of high-quality raw silk puts high requirements on spinning equipment and a spinning process. The solidification process is a polyacrylonitrile nascent fiber solidification forming stage, in the process, polyacrylonitrile solution forms polyacrylonitrile solution trickle through a spinneret plate, and then solidification forming is carried out under the action of coagulant water. The quality stability of properties such as structure, appearance and the like of the precursor is directly determined in the solidification process, so that the solidification condition has very important influence on the quality of the precursor and the continuity of spinning and plays a critical role in the performance of the carbon fiber.
In the process of producing polyacrylonitrile protofilament by traditional wet spinning, the used coagulation forming device mainly comprises a spinning pack, a coagulation bath, a drawing roller and the like. At present, related technologies improve a coagulation forming device, for example, (1) related technologies ensure uniformity of a temperature concentration field of a coagulation liquid by designing a coagulation liquid distribution plate and a circular hole distribution on an overflow plate in a coagulation bath; (2) in the related technology, a fairing is introduced into a coagulation bath to eliminate the phenomena of wire winding of a guide roller in the coagulation bath and more broken wires in an overflow groove; (3) in the related technology, the problems of uneven bath liquid, broken wires of winding rollers and the like are solved by designing the positions of a coagulating bath inlet, a coagulating bath outlet, a coagulating liquid distribution plate and an overflow plate.
However, the related art related to coagulation forming devices at present is considered from the design of a coagulation bath, and the matching between devices, between devices and processes and between operations is not considered, so that the problems of broken filaments, hanging filaments and floating filaments of a winding roll and the problem of uniformity of primary fibers still exist.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a coagulation forming apparatus, which mainly aims to design components of the coagulation forming apparatus, and reasonably arrange the components to provide a better filament running path for the nascent fiber, increase the coagulation time of the nascent fiber in the coagulation bath solution, and reduce the time of exposing the nascent fiber in the air, so as to reduce the generation of broken filaments and broken filaments.
In order to achieve the purpose, the utility model mainly provides the following technical scheme:
in one aspect, embodiments of the present invention provide a coagulation forming device, wherein the coagulation forming device comprises:
a coagulation bath;
the spinneret is arranged in the coagulating bath tank, so that the spinneret can be positioned in the coagulating bath liquid after the coagulating bath liquid is injected into the coagulating bath tank;
the lower edge of the roller body of the guide roller extends into the coagulating bath tank, so that after the coagulating bath liquid is injected into the coagulating bath tank, the lower edge of the roller body of the guide roller can be immersed into the coagulating bath liquid;
wherein, the position that the roll body lower edge of guide roll was located is higher than the position that the spinneret was located, and the relative position between spinneret, the guide roll satisfies: the lifting gradient of the fiber tows between the spinning nozzle and the guide roller along the filament traveling direction is 1-5 degrees.
Preferably, the lift gradient is 2-3 °.
Preferably, the position of the spinneret in the coagulation bath is such that: after the coagulation bath liquid is injected into the coagulation bath groove, the distance between the center of the spinneret and the liquid level of the coagulation bath liquid is 5-20cm, and the distance is preferably 8-15 cm.
Preferably, the position of the guide roller satisfies: after the coagulation bath is injected into the coagulation bath, the distance between the lower edge of the roller body of the guide roller and the liquid level of the coagulation bath is 0-10cm, preferably 4-6 cm.
Preferably, the coagulation forming device further comprises a wire guide frame; the fiber tows sprayed out of the spinneret pass through the yarn guide frame and then pass through the guide roller; preferably, the distance between the yarn guide frame and the spinneret is A; the distance between the yarn guide frame and the guide roller is B; wherein, the ratio of A to B is (1-4): 1.
preferably, the coagulation forming device further comprises a drawing roller for making the fiber tows pass through the drawing roller after passing through the guide roller; preferably, the drawing roller is a driving roller; preferably, the guide roller is a driving roller; preferably, the drafting roller and the guide roller belong to the same roller group; more preferably, the roller number of the roller group is more than or equal to 2; preferably, the relative position of the drafting roller and the guide roller is set to satisfy: and enabling the fiber tows between the guide roller and the drafting roller to be vertical to a horizontal plane.
Preferably, the coagulation forming apparatus further includes:
the feeding pipe is connected with the spinning nozzle;
the feeding pipe is fixed with the coagulating bath through the support;
preferably, the feeding pipe is a gooseneck;
preferably, the feed pipe has a vacuum insulation layer.
Preferably, the coagulation bath is provided with a first bath wall and a second bath wall which are oppositely arranged, the spinning nozzle is close to the first bath wall, and the guide roller is close to the second bath wall; the coagulation forming device further comprises an overflow plate; wherein the lower end of the overflow plate is connected with the bottom of the coagulating bath tank, and the overflow plate extends upwards at the space between the guide roller and the second bath wall; an overflow groove is formed between the overflow plate and the second groove wall; preferably, the upper end of the overflow plate is 0-10cm, preferably 4-6cm higher than the lower edge of the roller body of the guide roller.
Preferably, the coagulating bath groove is provided with a coagulating bath liquid inlet and a coagulating bath liquid outlet; wherein the coagulation bath liquid inlet is arranged on a first bath wall of the coagulation bath tank, or the coagulation bath liquid inlet is positioned on the bottom of the coagulation bath tank at a position close to the first bath wall; preferably, a coagulation bath liquid distribution plate is arranged at the inlet of the coagulation bath liquid; the outlet of the coagulation bath liquid is arranged at the bottom of the overflow groove.
Preferably, the trough bottom of the coagulation bath comprises a first trough bottom positioned between a first trough wall and an overflow plate; the first groove bottom is sequentially provided with a flat bottom section and a slow flow section along the direction from the first groove wall to the overflow plate; wherein, the slow flow section is in a slope shape extending upwards; preferably, the length ratio of the flat bottom section to the slow flow section is 1 (2-4); preferably, the slope surface of the slope is wavy; preferably, the slope of the slow flow section is 3-5 °.
Compared with the prior art, the solidification forming device has at least the following advantages:
according to the coagulation forming device provided by the embodiment of the utility model, the spinneret can be immersed in the coagulation bath liquid, the lower edge of the roller body of the guide roller can be immersed in the coagulation bath liquid, and the lower edge of the roller body of the guide roller is higher than the spinneret, so that on the basis, the relative positions of the spinneret and the guide roller meet the following requirements: the lifting gradient of the fiber tows between the spinning nozzle and the guide roller along the filament traveling direction is 1-5 degrees; by reasonably arranging the spinning nozzle and the guide roller of the coagulation forming device, a better filament passing path is provided for the fiber tows, and the filament passing path can increase the coagulation time of the fiber tows in the coagulation bath liquid, reduce the time of exposure to air and reduce the generation of broken filaments and broken filaments. Furthermore, the utility model also sets the distance between the spinning nozzle and the roller body of the guide roller and the liquid level of the coagulation bath liquid and the position relationship between the guide roller and the drafting roller so as to further optimize the wire-moving path and reduce the generation of broken wires and broken wires.
Furthermore, the bottom of the coagulation bath of the coagulation forming device provided by the utility model can reduce the volume of the coagulation bath by arranging the slow flow section, so that the circulation speed of the coagulation bath is higher, the coagulation bath is further arranged into a wave-shaped slope bottom, no dead angle is ensured, the disturbance of water flow is reduced, and the influence on running fibers is avoided.
Furthermore, the coagulation forming device provided by the utility model adopts the feeding pipe with the vacuum heat-insulating layer and the position of the overflow plate to arrange, so that the temperature and viscosity of the spinning solution are uniform, the temperature concentration field of the coagulation bath solution is uniform, and the uniformity of the fiber is improved.
In conclusion, the coagulation forming device provided by the utility model determines a better filament running path for the nascent fiber through reasonable distribution of components of the coagulation forming device such as a spinning nozzle, a yarn guide frame, a guide roller, a drafting roller, a support, a feed pipe and the bottom of a coagulation bath (comprising a flat bottom section and a slow flow section), so that the uneven fiber caused by the uneven temperature concentration field of the coagulation bath is avoided, meanwhile, the phenomena of broken filaments, yarn breakage, branching and the like generated in the coagulation process of the fiber are avoided, the uniform forming and drafting of each part of the nascent fiber are further realized, and the performance dispersion among fiber monofilaments is reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a coagulation forming apparatus according to an embodiment of the present invention.
Detailed Description
To further explain the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present application will be given with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a solidification molding apparatus including: a coagulation bath 10, a spinneret 3 and a guide roll 6; wherein the spinneret 3 is installed in the coagulation bath 10 so that the spinneret 3 can be positioned in the coagulation bath after the coagulation bath 10 is injected therein. The lower edge 61 of the roller body of the guide roller 6 extends into the coagulation bath 10 so that the lower edge 61 of the roller body of the guide roller 6 can be immersed in the coagulation bath after the coagulation bath 10 is filled with the coagulation bath. Wherein, the position that roll body lower edge 61 of guide roll 6 is located is higher than the position that spinneret 3 was located, and the relative position between spinneret 3, the guide roll 6 satisfies: the gradient of the fiber strand between the spinneret 3 and the guide roll 6 in the direction of the running is 1 to 5 °, preferably 2 to 3 °.
In the coagulation forming apparatus provided in the present embodiment, the spinneret 3 is immersed (completely immersed) in the coagulation bath, the lower edge 61 of the roller body of the guide roller 6 is immersed in the coagulation bath, and the lower edge 61 of the roller body of the guide roller 6 is located at a position higher than the position of the spinneret 3, and therefore, the relative positions of the spinneret 3 and the guide roller 6 satisfy: the lifting gradient of the fiber tows between the spinneret 3 and the guide roller 6 along the filament traveling direction is 1-5 degrees; through carrying out reasonable layout to coagulation forming device's spinning jet 3 and guide roll, provide better walking path for the fibre silk bundle, this walking path can increase the coagulation time of fibre silk bundle in the coagulation bath, reduces the time of exposing in the air, simultaneously, reduces the friction with the roll surface, and then reduces the production of broken filament, disconnected silk.
Example 2
Preferably, in this embodiment, compared with the previous embodiment, as shown in fig. 1, the position of the spinneret 3 and the guide roll 6 is further designed as follows:
the position of the spinneret 3 in the coagulation bath 10 satisfies: after the coagulation bath 10 is filled with the coagulation bath, the distance between the center of the spinneret 3 and the liquid surface of the coagulation bath is 5 to 20cm, preferably 8 to 15 cm.
The position of the guide roller 6 satisfies: after the coagulation bath 10 is filled with the coagulation bath, the distance between the lower edge of the roller body of the guide roller 6 and the liquid level of the coagulation bath is 0 to 10cm, preferably 4 to 6 cm.
The arrangement is to ensure that the lifting gradient of the fiber tows between the spinneret 3 and the guide roll 6 along the filament running direction is 1-5 degrees, preferably 2-3 degrees, and ensure that the fiber tows between the spinneret 3 and the guide roll 6 are all positioned in the coagulating bath liquid, so as to reduce the generation of broken filaments and broken filaments.
Example 3
Preferably, the present embodiment provides a coagulation forming device, on the basis of the above embodiments, as shown in fig. 1, the coagulation forming device of the present embodiment further includes a guide frame 5; wherein, the yarn guide frame 5 is arranged in the coagulating bath 10, and the tows sprayed out from the spinneret 3 firstly pass through the yarn guide frame 5 and then pass through the guide roller 6.
Wherein, the distance between the yarn guide frame 5 and the spinneret 3 is A; the distance between the yarn guide frame 5 and the guide roller 6 is B; wherein, the ratio of A to B is (1-4): 1, so as to ensure that the fibers do not cross, and in addition, a bundle of nascent fibers passes through the middle of every 2 yarn guide rods, so that the yarn cross between spinning positions is avoided.
Example 4
Preferably, the present embodiment provides a coagulation forming device, on the basis of the above embodiment, as shown in fig. 1, the coagulation forming device further includes a drawing roller 7 for making the fiber tow pass through the guide roller 6 and then pass through the drawing roller 7.
Wherein the drafting roller 7 is a driving roller. The guide roller 6 is a drive roller. Preferably, the drafting roller 7 and the guide roller 6 belong to the same roller group; more preferably, the roller number of the roller group is more than or equal to 2; here, since the fiber tows (nascent fibers) are fragile, the drive roll avoids the phenomenon of yarn grinding, so that the roll speeds of the guide roll 6 and the drafting roll 7 are the same, and broken yarns caused by speed mismatching are avoided.
Preferably, the fiber tows between the drawing roller 7 and the guide roller 6 (i.e. the tangent point connecting line of the drawing roller 7 and the guide roller 6) are perpendicular to the horizontal plane, and are arranged in such a way that the staying time of the nascent fibers in the air after leaving the bath is reduced as much as possible without fiber separation, thereby further reducing the generation of broken filaments and broken filaments.
Example 5
Preferably, in addition to the above embodiments, as shown in fig. 1, the coagulation bath 10 has a first bath wall and a second bath wall which are oppositely disposed, the spinneret 3 is disposed near the first bath wall of the coagulation bath 10, and the guide roll 6 is disposed near the second bath wall of the coagulation bath 10; the coagulation forming device further comprises an overflow plate 11; wherein, the lower end of the overflow plate 11 is connected with the bottom of the coagulating bath 10, and the overflow plate 11 extends upwards in the space between the guide roll 6 and the second bath wall; wherein, an overflow trough is formed between the overflow plate 11 and the second trough wall; preferably, the upper end of the overflow plate 11 is 0-10cm, preferably 4-6cm higher than the lower edge of the roller body of the guide roller, and in addition, the height of the overflow plate 11 is adjustable.
Preferably, the coagulating bath 10 is provided with a coagulating bath liquid inlet and a coagulating bath liquid outlet; wherein, the coagulating bath liquid inlet is arranged on the first bath wall of the coagulating bath 10, or the coagulating bath liquid inlet is positioned on the bottom of the coagulating bath 10 close to the first bath wall; preferably, a coagulation bath liquid distribution plate is arranged at the inlet of the coagulation bath liquid; the outlet of the coagulation bath liquid is arranged at the bottom of the overflow groove.
Preferably, the coagulation forming device 10 further comprises a supply pipe 2 and a support 1; wherein, the feed pipe 2 is connected with the spinneret 3; the feed pipe 2 is fixed to the coagulation bath 10 by the support 1. Preferably, the feeding pipe 2 is a gooseneck and has a vacuum insulation layer. Here, the feeder tube 2 that this embodiment chose for use is for adopting gooseneck (sleeve) that has the vacuum heat preservation, makes the temperature and the viscosity of spinning solution remain stable, can effectively improve fibrous homogeneity.
Here, the coagulation forming apparatus provided by this embodiment can make the temperature and viscosity of the spinning solution uniform and the temperature concentration field of the coagulation bath uniform by using the supply pipe having the vacuum insulation layer and arranging the positions of the overflow plates, thereby improving the uniformity of the fiber.
Example 6
Preferably, the present embodiment provides a solidification forming apparatus, which is further designed based on embodiment 5 as shown in fig. 1 as follows: the tank bottom of the coagulation bath 10 comprises a first tank bottom positioned between a first tank wall and an overflow plate 11; wherein, the first tank bottom is sequentially provided with a flat bottom section 8 and a slow flow section 9 along the direction from the first tank wall to the overflow plate; wherein, the slow flow section is in a slope shape extending upwards; wherein the length ratio of the flat bottom section 8 to the slow flow section 9 is 1 (2-4); the slope surface of the slope is wavy; the gradient of the slow flow section 9 is 3-5 degrees.
The coagulating bath 10 of the coagulating and forming device provided by the embodiment has the advantages that the volume of the coagulating bath can be reduced by arranging the slow flow section 9 at the bottom of the coagulating bath, so that the circulating speed of the coagulating bath is higher, the coagulating bath is further arranged into a wavy slope bottom, no dead angle is ensured, the disturbance of water flow is reduced, and the influence on running fibers is avoided.
In addition, in the coagulation forming apparatus provided in the above embodiment, the liquid level vibration index of the coagulation bath liquid in the coagulation bath tank is not more than 0.05 mm/s.
In the coagulation forming apparatus according to the above embodiment, the surfaces of the guide roll 6, the draft roll 7, and the godet 5 are made of ceramic.
In summary, as shown in fig. 1, the coagulation forming device provided by the present invention determines a superior filament traveling path for the nascent fiber by reasonably distributing the components of the coagulation forming device, such as the spinneret 3, the godet 5, the guide roller 6, the drafting roller 7, the support 1, the feed pipe 2, and the bottom of the coagulation bath 10 (including the flat bottom section and the slow flow section), so as to avoid the uneven fiber caused by the uneven temperature concentration field of the coagulation bath, reduce the friction with the roller surface, avoid the phenomena of fuzz and bifurcation of the fiber in the coagulation process, further realize the uniform forming and drafting of each part of the nascent fiber, and reduce the performance dispersion among the filaments of the fiber.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (16)
1. A coagulation forming device, characterized in that the coagulation forming device comprises:
a coagulation bath;
the spinneret is arranged in the coagulating bath tank, so that the spinneret can be positioned in the coagulating bath liquid after the coagulating bath liquid is injected into the coagulating bath tank;
the lower edge of the roller body of the guide roller extends into the coagulating bath tank, so that after the coagulating bath liquid is injected into the coagulating bath tank, the lower edge of the roller body of the guide roller can be immersed into the coagulating bath liquid;
wherein, the position that the roll body lower edge of guide roll was located is higher than the position that the spinneret was located, and the relative position between spinneret, the guide roll satisfies: making the lifting gradient of the fiber tows between the spinneret and the guide roller along the filament traveling direction be 1-5 degrees;
the coagulation bath is provided with a first bath wall and a second bath wall which are oppositely arranged, the spinning nozzle is close to the first bath wall, and the guide roller is close to the second bath wall; the coagulation forming device further comprises an overflow plate; wherein the lower end of the overflow plate is connected with the bottom of the coagulating bath tank, and the overflow plate extends upwards at the space between the guide roller and the second bath wall; an overflow groove is formed between the overflow plate and the second groove wall;
the bottom of the coagulating bath tank comprises a first tank bottom positioned between a first tank wall and an overflow plate; the first groove bottom is sequentially provided with a flat bottom section and a slow flow section along the direction from the first groove wall to the overflow plate; the slow flow section is in an upward extending slope shape, the slope surface of the slope is in a wave shape, and the gradient of the slow flow section is 3-5 degrees; the length ratio of the flat bottom section to the slow flow section is 1 (2-4).
2. The coagulation forming apparatus of claim 1, wherein the lift slope is 2-3 °.
3. The coagulation forming apparatus according to claim 1 or 2, wherein the position of the spinneret within the coagulation bath is such that: and after the coagulation bath liquid is injected into the coagulation bath groove, the distance between the center of the spinneret and the liquid level of the coagulation bath liquid is 5-20 cm.
4. The coagulation forming device of claim 3, wherein the position of the spinneret within the coagulation bath is such that: and after the coagulation bath liquid is injected into the coagulation bath groove, the distance between the center of the spinneret and the liquid level of the coagulation bath liquid is 8-15 cm.
5. The coagulation forming apparatus according to claim 1 or 2, wherein the guide roller is positioned so as to satisfy: and after the coagulation bath is injected into the coagulation bath, the distance between the lower edge of the roller body of the guide roller and the liquid level of the coagulation bath is 0-10 cm.
6. The coagulation forming apparatus of claim 5, wherein the guide roll is positioned such that: and after the coagulation bath liquid is injected into the coagulation bath groove, the distance between the lower edge of the roller body of the guide roller and the liquid level of the coagulation bath liquid is 4-6 cm.
7. The coagulation forming device of claim 1, further comprising a wire guide; wherein the content of the first and second substances,
the yarn guide frame is arranged in the coagulating bath tank, so that the fiber tows sprayed out of the spinning nozzle pass through the yarn guide frame and then pass through the guide roller.
8. The coagulation forming apparatus of claim 7,
the distance between the yarn guide frame and the spinneret is A; the distance between the yarn guide frame and the guide roller is B; wherein, the ratio of A to B is (1-4): 1.
9. the coagulation forming device of claim 1, further comprising a draft roller for passing the fiber tow through the guide roller and then through the draft roller.
10. The coagulation forming apparatus of claim 9,
the drawing roller is a driving roller; and/or
The guide roller is a driving roller; and/or
The drafting roller and the guide roller belong to the same roller set; wherein the roller number of the roller group is more than or equal to 2; and/or
The relative position of the drafting roller and the guide roller is set to meet the following requirements: and enabling the fiber tows between the guide roller and the drafting roller to be vertical to a horizontal plane.
11. The coagulation forming device of claim 1, further comprising:
the feeding pipe is connected with the spinning nozzle;
and the feeding pipe is fixed with the coagulating bath through the support.
12. The coagulation forming apparatus of claim 11,
the feeding pipe is a gooseneck; and/or
The feeding pipe is provided with a vacuum heat-insulating layer.
13. The coagulation forming apparatus of claim 1,
the upper end of the overflow plate is 0-10cm higher than the lower edge of the roller body of the guide roller.
14. The coagulation forming apparatus of claim 13,
the upper end of the overflow plate is 4-6cm higher than the lower edge of the roller body of the guide roller.
15. The coagulation forming apparatus according to claim 1, wherein the coagulation bath tank is provided with a coagulation bath liquid inlet and a coagulation bath liquid outlet; wherein the content of the first and second substances,
the coagulating bath liquid inlet is arranged on a first bath wall of the coagulating bath tank, or the coagulating bath liquid inlet is positioned on the bottom of the coagulating bath tank at a position close to the first bath wall;
the outlet of the coagulation bath liquid is arranged at the bottom of the overflow groove.
16. The coagulation forming apparatus of claim 15, wherein a coagulation bath distribution plate is provided at an inlet of the coagulation bath.
Priority Applications (1)
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| CN202121393987.XU CN216039977U (en) | 2021-06-22 | 2021-06-22 | Solidification forming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121393987.XU CN216039977U (en) | 2021-06-22 | 2021-06-22 | Solidification forming device |
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| CN216039977U true CN216039977U (en) | 2022-03-15 |
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