CN117513068B - Heating plate fixing structure of pulp suction die - Google Patents
Heating plate fixing structure of pulp suction die Download PDFInfo
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- CN117513068B CN117513068B CN202311503733.2A CN202311503733A CN117513068B CN 117513068 B CN117513068 B CN 117513068B CN 202311503733 A CN202311503733 A CN 202311503733A CN 117513068 B CN117513068 B CN 117513068B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 74
- 238000009413 insulation Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention provides a heating plate fixing structure of a pulp suction die, which comprises a heating plate, a die body and a fastener, wherein a locking hole is formed in the heating plate along the horizontal direction of the heating plate, and the locking hole sequentially comprises a first groove-shaped hole part and a second groove-shaped hole part from top to bottom; the die body is provided with a plurality of connecting holes which are in one-to-one correspondence with the locking holes and are communicated with the lower end of the second groove-shaped hole part, and an internal thread structure is arranged in the connecting holes; the fastening piece sequentially comprises a fastening cap part, a fastening rod part and a fastening thread part from top to bottom, wherein each fastening piece is respectively and sequentially inserted into the locking hole and the connecting hole from top to bottom so as to lock the heating plate on the die body, the fastening cap part is positioned in the first groove-shaped hole part, the fastening rod part is positioned in the second groove-shaped hole part, the fastening thread part is in threaded connection with the internal thread structure, a first gap is reserved between the fastening cap part and the inner side wall of the first groove-shaped hole part in the horizontal direction, and a second gap is reserved between the fastening rod part and the inner side wall of the second groove-shaped hole part in the horizontal direction.
Description
Technical Field
The invention relates to the technical field of pulp sucking dies, in particular to a heating plate fixing structure of a pulp sucking die.
Background
In the existing pulp-sucking mould, a heating plate for heating is generally arranged, and the heating plate is generally directly locked on other plate structures of the pulp-sucking mould at a plurality of positions through a plurality of common bolts. Because the heating temperature on the heating plate can reach 260 ℃, the heating plate can expand due to heating, and the common bolt locks the heating plate in the horizontal direction and the up-down direction at the locking position of the common bolt, so that the position of the heating plate for expanding can only be the position between the locking positions, the heating plate is in a concave-convex shape, the flatness of the heating plate is seriously influenced, and the position of a die cavity arranged on the heating plate and the quality of products formed on the die cavity are influenced.
The prior art solves the problems by locking the heating plate at the middle position of the heating plate, starting the equipment to operate, completing the thermal expansion of the heating plate after the temperature of the heating plate on the pulp sucking mould reaches the required temperature, stopping the machine, continuously locking the heating plate at other positions of the heating plate by other bolts, and starting the equipment to operate for production. While this approach may ensure a certain flatness of the heating plate, it severely affects the time and efficiency of the production process due to the need for downtime for the process, as well as relocking the heating plate.
Therefore, it is necessary to provide a heating plate fixing structure of a pulp suction mold which can ensure the efficiency of production and processing while ensuring the flatness of the heating plate.
Disclosure of Invention
The invention aims to provide a heating plate fixing structure of a pulp sucking mould, which can ensure the flatness of the heating plate and the production and processing efficiency.
In order to achieve the above purpose, the invention provides a heating plate fixing structure of a pulp suction die, which comprises a heating plate, a die body and a fastener, wherein a plurality of locking holes penetrating up and down are arranged on the heating plate along the horizontal direction of the heating plate, and each locking hole sequentially comprises a first groove-shaped hole part and a second groove-shaped hole part which is formed by narrowing and extending from the lower end of the first groove-shaped hole part from top to bottom; the die body is provided with a plurality of connecting holes which are in one-to-one correspondence with the locking holes and are communicated with the lower end of the second groove-shaped hole part, and an internal thread structure is arranged in each connecting hole; the fastening piece sequentially comprises a fastening cap part, a fastening rod part and fastening thread parts from top to bottom, the number of the fastening piece is the same as that of the locking holes, the fastening piece is sequentially inserted into the locking holes and the connecting holes from top to bottom so as to lock the heating plate on the die body, the fastening cap part is positioned in the first groove-shaped hole part, the diameter of the fastening cap part is larger than that of the second groove-shaped hole part, the fastening rod part is positioned in the second groove-shaped hole part, the fastening thread parts are in threaded connection with the internal thread structures, a first gap is reserved between the fastening cap part and the inner side wall of the first groove-shaped hole part in the horizontal direction, and a second gap is reserved between the fastening rod part and the inner side wall of the second groove-shaped hole part in the horizontal direction.
Preferably, the die body comprises an air hole plate and a supporting component from top to bottom, the connecting hole comprises a first connecting hole part formed on the air hole plate and a second connecting hole part formed on the supporting component, the upper end of the first connecting hole part is communicated with the lower end of the second groove-shaped hole part, the lower end of the first connecting hole part is communicated with the upper end of the second connecting hole part, and the internal thread structure is formed on the inner side wall of the second connecting hole part; the fastening rod part is arranged in the second groove-shaped hole part and the first connecting hole part in a penetrating mode, and the fastening thread part is arranged in the second connecting hole part.
Preferably, a third gap is formed between the fastening rod portion and the inner side wall of the first connecting hole portion.
Preferably, the cross section of the first connecting hole portion is a slot-shaped hole.
Preferably, the support assembly comprises a heat insulating plate and a bearing plate, wherein the heat insulating plate is arranged below the air hole plate, the bearing plate is arranged below the heat insulating plate, and the second connecting hole part is formed on the heat insulating plate and the bearing plate.
Preferably, the second connecting hole part comprises a first hole-dividing section formed on the heat insulating plate and a second hole-dividing section formed on the bearing plate, the upper end of the first hole-dividing section is communicated with the lower end of the first connecting hole part, the lower end of the first hole-dividing section is communicated with the upper end of the second hole-dividing section, and the internal thread structure is formed on the inner side wall of the second hole-dividing section; the fastening rod part also penetrates through the first hole-dividing section, and the fastening thread part is positioned in the second hole-dividing section.
Preferably, a fourth gap is formed between the fastening rod portion and the inner side wall of the first sub-hole section.
Preferably, the first hole-dividing section has a larger diameter than the second hole-dividing section, and the fastening rod portion has a larger diameter than the fastening screw portion.
Compared with the prior art, the fixing structure of the heating plate of the pulp suction mold is characterized in that the fixing structure is provided with the locking holes and the connecting holes which are in one-to-one correspondence with the locking holes on the heating plate, when the locking holes and the connecting holes are respectively and sequentially inserted from top to bottom by utilizing a plurality of fasteners, the locking holes sequentially comprise the first groove-shaped hole part and the second groove-shaped hole part which is formed by narrowing and extending from the lower end of the first groove-shaped hole part from top to bottom, the fasteners sequentially comprise the fastening cap part, the fastening rod part and the fastening thread part from top to bottom, so that the fastening rod part is positioned in the second groove-shaped hole part, the fastening thread part is in threaded connection with the internal thread structure, and accordingly, the heating plate is locked on the mold body in different positions of the heating plate in the up-down direction.
Drawings
Fig. 1 is a perspective view of a structure for fixing a heating plate of a pulp suction mold according to the present invention.
Fig. 2 is a plan view of a heating plate fixing structure of the pulp suction mold of the present invention.
Fig. 3 is a cross-sectional view taken along A-A in fig. 2.
FIG. 4 is a partial block diagram of the fastener location of FIG. 3.
Fig. 5 is a perspective view of a heating plate of the heating plate fixing structure of the pulp suction mold of the present invention.
Fig. 6 is an enlarged view at B in fig. 5.
Fig. 7 is a perspective view showing a structure of a fastener for fixing a heating plate of a pulp suction mold according to the present invention.
Detailed Description
In order to describe the technical content and constructional features of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 7, a heating plate fixing structure 100 of a pulp sucking die of the present invention includes a heating plate 1, a die body 2 and a fastener 3, wherein a plurality of locking holes 11 penetrating up and down are provided on the heating plate 1 along a horizontal direction thereof, and each locking hole 11 sequentially includes a first slot-shaped hole portion 111 and a second slot-shaped hole portion 112 formed by narrowing and extending from a lower end of the first slot-shaped hole portion 111 from top to bottom; the die body 2 is provided with a plurality of connecting holes 21 which are in one-to-one correspondence with the locking holes 11 and are communicated with the lower end of the second groove-shaped hole part 112, and an internal thread structure 22 is arranged in the connecting holes 21; the fastening pieces 3 sequentially comprise fastening cap parts 31, fastening rod parts 32 and fastening thread parts 33 from top to bottom, the number of the fastening pieces 3 is the same as that of the locking holes 11, the fastening pieces 3 are respectively inserted into the locking holes 11 and the connecting holes 21 from top to bottom in sequence to lock the heating plate 1 on the die body 2, the fastening cap parts 31 are positioned in the first groove-shaped hole parts 111, the diameter of the fastening cap parts 31 is larger than that of the second groove-shaped hole parts 112, the fastening rod parts 32 are positioned in the second groove-shaped hole parts 112, the fastening thread parts 33 are in threaded connection with the internal thread structures 22, a first gap D1 is reserved between the fastening cap parts 31 and the inner side walls of the first groove-shaped hole parts 111 in the horizontal direction, and a second gap D2 is reserved between the fastening rod parts 32 and the inner side walls of the second groove-shaped hole parts 112 in the horizontal direction. The upper portion of the heating plate 1 may be connected to a cavity member of the pulp suction mold, but is not limited thereto.
Since the fastening cap portion 31 and the inner side wall of the first groove-shaped hole portion 111 have the first gap D1 therebetween in the horizontal direction and the fastening rod portion 32 and the inner side wall of the second groove-shaped hole portion 112 have the second gap D2 therebetween in the horizontal direction, so that the heating plate 1 is restrained in the up-down direction while having an expandable space in the horizontal direction, the heating plate 1 expands only in the horizontal direction when heated, and the heating plate 1 is prevented from expanding in the up-down direction when heated.
Referring to fig. 1, 3 and 4, in the present embodiment, the mold body 2 includes, from top to bottom, an air hole plate 23 and a supporting component 24, the connecting hole 21 includes a first connecting hole portion 211 formed on the air hole plate 23 and a second connecting hole portion 212 formed on the supporting component 24, an upper end of the first connecting hole portion 211 is communicated with a lower end of the second groove-shaped hole portion 112, a lower end of the first connecting hole portion 211 is communicated with an upper end of the second connecting hole portion 212, and an internal thread structure 22 is formed on an inner sidewall of the second connecting hole portion 212; the fastening rod portion 32 is inserted into the second groove-shaped hole portion 112 and the first connection hole portion 211, and the fastening screw portion 33 is positioned in the second connection hole portion 212. Further, the fastening rod portion 32 and the inner sidewall of the first connection hole portion 211 have a third gap D3 therebetween. Since the air hole plate 23 is adjacent to the heating plate 1, after the heating plate 1 is heated to a certain temperature, the air hole plate 23 is heated up due to the heat transfer, and is further expanded by heat, and by providing the third gap D3 between the fastening rod portion 32 and the inner wall of the first connection hole portion 211, the air hole plate 23 can be expanded only in the horizontal direction by using the third gap D3 under the condition that the air hole plate 23 is vertically restricted, thereby ensuring the flatness of the air hole plate 23. More specifically, the cross section of the first connection hole portion 211 is a slot-shaped hole, but not limited thereto. The specific structure and principle of the air hole plate 23 are well known to those skilled in the art, and are not described herein.
With continued reference to fig. 1, 3 and 4, in the present embodiment, the supporting component 24 includes a thermal insulation plate 241 and a bearing plate 242, the thermal insulation plate 241 is disposed below the air hole plate 23, the bearing plate 242 is disposed below the thermal insulation plate 241, and the second connecting hole 212 is formed on the thermal insulation plate 241 and the bearing plate 242. The heat insulating plate 241 may serve as a heat insulator, and the bearing plate 242 may serve as a bearing support. Specifically, the second connection hole portion 212 includes a first hole-dividing section 212a formed on the heat insulation plate 241 and a second hole-dividing section 212b formed on the carrier plate 242, an upper end of the first hole-dividing section 212a is communicated with a lower end of the first connection hole portion 211, a lower end of the first hole-dividing section 212a is communicated with an upper end of the second hole-dividing section 212b, and the internal thread structure 22 is formed on an inner sidewall of the second hole-dividing section 212 b; the fastening rod portion 32 is also penetrated into the first hole-dividing section 212a, and the fastening screw portion 33 is positioned in the second hole-dividing section 212 b. Further, the fastening rod portion 32 has a fourth gap D4 with the inner side wall of the first split hole section 212 a. By setting the fourth gap D4, after the heat insulation plate 241 is subjected to the heat transfer of the air hole plate 23, if the heat is expanded, the heat insulation plate 241 can be expanded only in the horizontal direction by utilizing the fourth gap D4, so as to ensure the flatness of the heat insulation plate 241.
Referring to fig. 4 and 7, in the present embodiment, the first hole-dividing section 212a has a larger diameter than the second hole-dividing section 212b, and the fastening rod portion 32 has a larger diameter than the fastening thread portion 33.
In summary, according to the heating plate fixing structure 100 of the pulp absorbing mold of the invention, by arranging the locking hole 11 on the heating plate 1 and arranging the plurality of connecting holes 21 corresponding to the locking holes 11 one by one on the mold body 2, when the plurality of fasteners 3 are respectively inserted into the locking hole 11 and the connecting holes 21 from top to bottom in sequence, the locking hole 11 sequentially comprises the first groove-shaped hole part 111 from top to bottom and the second groove-shaped hole part 112 formed by narrowing and extending from the lower end of the first groove-shaped hole part 111, the fasteners 3 sequentially comprises the fastening cap part 31, the fastening rod part 32 and the fastening thread part 33 from top to bottom, so that the fastening rod part 31 is positioned in the first groove-shaped hole part 111 and is tightly pressed on the heating plate 1, the fastening rod part 32 is positioned in the second groove-shaped hole part 112, and the fastening thread part 33 is in threaded connection with the internal thread structure 22, so that the heating plate 1 is locked on the mold body 2 at different positions of the heating plate 1 in the up-down direction, and the first gap D1 is arranged between the inner side walls of the fastening cap part 31 and the first groove-shaped hole part 111 in the horizontal direction, the fastening rod part 32 is not required to be expanded in the up-down direction, and the expansion of the heating plate 1 can be effectively prevented from being stopped in the up-down direction, and the horizontal expansion of the heating plate 1 is ensured, and the expansion of the heating plate 1 can be effectively prevented from being stopped in the up-down direction, and the horizontal direction is required to be expanded in the horizontal direction, and the horizontal direction of the heating plate 1 is required to be expanded in the horizontal direction and the horizontal direction 1 is only when the heating plate 1 is required to be expanded in the up and the horizontal direction is required to be expanded.
The foregoing disclosure is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. A heating plate fixing structure of a pulp sucking die, which is characterized by comprising:
The heating plate is provided with a plurality of locking holes penetrating up and down along the horizontal direction, and each locking hole sequentially comprises a first groove-shaped hole part and a second groove-shaped hole part which is formed by narrowing and extending from the lower end of the first groove-shaped hole part from top to bottom;
The die body is provided with a plurality of connecting holes which are in one-to-one correspondence with the locking holes and are communicated with the lower end of the second groove-shaped hole part, and an internal thread structure is arranged in the connecting holes;
The fastening parts sequentially comprise fastening cap parts, fastening rod parts and fastening thread parts from top to bottom, the number of the fastening parts is the same as that of the locking holes, the fastening parts are respectively inserted into the locking holes and the connecting holes from top to bottom in sequence so as to lock the heating plate on the die body, the fastening cap parts are positioned in the first groove-shaped hole parts, the diameter of the fastening cap parts is larger than that of the second groove-shaped hole parts, the fastening rod parts are positioned in the second groove-shaped hole parts, the fastening thread parts are in threaded connection with the internal thread structures, a first gap is reserved between the fastening cap parts and the inner side walls of the first groove-shaped hole parts in the horizontal direction, and a second gap is reserved between the fastening rod parts and the inner side walls of the second groove-shaped hole parts in the horizontal direction;
The die body sequentially comprises an air hole plate and a supporting component from top to bottom, wherein the connecting hole comprises a first connecting hole part formed on the air hole plate and a second connecting hole part formed on the supporting component, the upper end of the first connecting hole part is communicated with the lower end of the second groove-shaped hole part, the lower end of the first connecting hole part is communicated with the upper end of the second connecting hole part, and the internal thread structure is formed on the inner side wall of the second connecting hole part; the fastening rod part is arranged in the second groove-shaped hole part and the first connecting hole part in a penetrating manner, and the fastening thread part is arranged in the second connecting hole part; a third gap is formed between the fastening rod portion and the inner side wall of the first connecting hole portion.
2. The structure for fixing the heating plate of the pulp suction mold according to claim 1, wherein the cross section of the first connection hole portion has a groove-shaped hole shape.
3. The structure for fixing the heating plate of the pulp suction mold according to claim 1, wherein the supporting member comprises a heat insulating plate and a bearing plate, the heat insulating plate is disposed below the air hole plate, the bearing plate is disposed below the heat insulating plate, and the second connection hole is formed in the heat insulating plate and the bearing plate.
4. The structure for fixing a heating plate of a pulp suction mold according to claim 3, wherein the second connection hole part comprises a first split hole section formed on the heat insulation plate and a second split hole section formed on the carrier plate, an upper end of the first split hole section is communicated with a lower end of the first connection hole part, a lower end of the first split hole section is communicated with an upper end of the second split hole section, and the internal thread structure is formed on an inner side wall of the second split hole section; the fastening rod part also penetrates through the first hole-dividing section, and the fastening thread part is positioned in the second hole-dividing section.
5. The structure for fixing the heating plate of the pulp suction mold according to claim 4, wherein a fourth gap is provided between the fastening rod portion and the inner side wall of the first divided hole section.
6. The structure for fixing a heating plate of a pulp suction mold according to claim 4, wherein the first perforated section has a larger diameter than the second perforated section, and the fastening rod portion has a larger diameter than the fastening screw portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311503733.2A CN117513068B (en) | 2023-11-10 | 2023-11-10 | Heating plate fixing structure of pulp suction die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311503733.2A CN117513068B (en) | 2023-11-10 | 2023-11-10 | Heating plate fixing structure of pulp suction die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117513068A CN117513068A (en) | 2024-02-06 |
| CN117513068B true CN117513068B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311503733.2A Active CN117513068B (en) | 2023-11-10 | 2023-11-10 | Heating plate fixing structure of pulp suction die |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050090529A (en) * | 2004-03-08 | 2005-09-13 | 유진하이텍(주) | Pipe distributor manufacture machine of pulp mold |
| CN102433804A (en) * | 2011-10-25 | 2012-05-02 | 广州华工环源绿色包装技术有限公司 | Forming device of lifting and descending reciprocating-type pulp molding equipment |
| CN103993528A (en) * | 2014-06-11 | 2014-08-20 | 曲士彬 | Cylinder type molded pulp package sizing device |
| CN107815931A (en) * | 2017-05-19 | 2018-03-20 | 杭州百路纸品有限公司 | Paper pulp model formation machine and drying all-in-one paper pulp molding forming device and method |
| CN108978358A (en) * | 2018-09-04 | 2018-12-11 | 永发（江苏）模塑包装科技有限公司 | A kind of paper mould printer device |
-
2023
- 2023-11-10 CN CN202311503733.2A patent/CN117513068B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050090529A (en) * | 2004-03-08 | 2005-09-13 | 유진하이텍(주) | Pipe distributor manufacture machine of pulp mold |
| CN102433804A (en) * | 2011-10-25 | 2012-05-02 | 广州华工环源绿色包装技术有限公司 | Forming device of lifting and descending reciprocating-type pulp molding equipment |
| CN103993528A (en) * | 2014-06-11 | 2014-08-20 | 曲士彬 | Cylinder type molded pulp package sizing device |
| CN107815931A (en) * | 2017-05-19 | 2018-03-20 | 杭州百路纸品有限公司 | Paper pulp model formation machine and drying all-in-one paper pulp molding forming device and method |
| CN108978358A (en) * | 2018-09-04 | 2018-12-11 | 永发（江苏）模塑包装科技有限公司 | A kind of paper mould printer device |
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| Publication number | Publication date |
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| CN117513068A (en) | 2024-02-06 |
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