CN112643986B - Forming device for S-shaped hollow plate - Google Patents
Forming device for S-shaped hollow plate Download PDFInfo
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- CN112643986B CN112643986B CN202011593935.7A CN202011593935A CN112643986B CN 112643986 B CN112643986 B CN 112643986B CN 202011593935 A CN202011593935 A CN 202011593935A CN 112643986 B CN112643986 B CN 112643986B
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 59
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims description 58
- 239000003292 glue Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000013329 compounding Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 16
- 238000003825 pressing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/501—Extruder feed section
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention discloses a forming device of an S-shaped hollow plate, which comprises the following specific steps: s1, putting raw materials into an extruding machine, and feeding materials through the extruding machine; s2, dividing the raw materials provided by the plastic extruding machine into an upper forming conveying line, a middle forming conveying line and a lower forming conveying line, and extruding the raw materials into an upper plate body, an S-shaped reinforcing rib and a lower plate body which are distributed from top to bottom by utilizing the three forming conveying lines; s3, gluing the upper side and the lower side of the S-shaped reinforcing rib; s4, compounding the upper plate body, the S-shaped reinforcing ribs and the lower plate body in a distributed state from top to bottom to form an S-shaped hollow plate; the forming device comprises a frame, and an upper plate forming mechanism, an S-shaped reinforcing rib forming mechanism, a lower plate forming mechanism and a composite mechanism which are arranged on the frame. The invention can realize the line production of the S-shaped hollow plate, obviously improve the production efficiency and reduce the production cost.
Description
Technical Field
The invention relates to the technical field of hollow plate production, in particular to a forming device of an S-shaped hollow plate.
Background
The hollow plate is a novel material with light weight, no toxicity, no pollution, water resistance, shock resistance, aging resistance, corrosion resistance and rich colors. Compared with a paperboard structure product, the hollow board has the advantages of moisture resistance, corrosion resistance and the like, and is mainly applied to various industrial fields such as electronics, packaging, machinery, light industry, post, food, medicine, pesticide, household appliances, advertisements, decoration, cultural goods, optomagnetic technology, bioengineering, medicine and health and the like. Is a novel environment-friendly packaging material, and the S-shaped hollow plate is also one of the hollow plates.
In the S-shaped hollow plate structure, because the reinforcing strips in the S-shaped hollow plate structure are of the S-shaped structure, continuous extrusion molding production cannot be realized, continuous automatic production cannot be realized for the S-shaped hollow plate, and only manual production can be realized, so that the production efficiency of the S-shaped hollow plate in the prior art is low, and the production cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the forming device of the S-shaped hollow plate, which can realize the linear production of the S-shaped hollow plate, obviously improve the production efficiency and reduce the production cost.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a forming device of cavity board in S type which characterized in that: the device comprises a rack, and an upper plate forming mechanism, an S-shaped reinforcing rib forming mechanism, a lower plate forming mechanism and a composite mechanism which are arranged on the rack;
the upper plate forming mechanism and the lower plate forming mechanism are respectively positioned above and below the S-shaped reinforcing rib forming mechanism and respectively comprise an extruder for providing raw materials and a plate body forming die for respectively extruding the raw materials into an upper plate body and a lower plate body;
the S-shaped reinforcing rib forming mechanism comprises an extruder for providing raw materials, a front forming die for receiving the raw materials and extruding the raw materials into the linear reinforcing ribs and a rear forming die for receiving the linear reinforcing ribs and extruding the linear reinforcing ribs into the S-shaped reinforcing ribs;
the composite mechanism simultaneously receives the upper plate body, the S-shaped reinforcing ribs and the lower plate body, and forms an upper structure, a middle structure and a lower structure by combining the upper plate body, the S-shaped reinforcing ribs and the lower plate body to form the S-shaped hollow plate.
Preferably, the rear forming die comprises a sliding plate, a base, a squeezing plate assembly and a driving assembly;
the sliding plate is in sliding fit with the rack;
the driving assembly is connected with the sliding plate and drives the sliding plate to move towards or back to the front forming die in a reciprocating mode;
the base is fixed on the sliding plate, and a channel for the linear reinforcing ribs to pass through is formed in the base;
the extrusion plate assembly comprises a cylinder group and a plurality of groups of S-shaped extrusion plate groups arranged in the channel, each group of S-shaped extrusion plate groups comprises a first extrusion plate and a second extrusion plate, a forming groove is formed between the first extrusion plate and the second extrusion plate, the first extrusion plate and the second extrusion plate are connected with the cylinder group, and the cylinder group drives the first extrusion plate and the second extrusion plate to move reversely or oppositely.
Preferably, the cylinder group comprises a first cylinder and a second cylinder which are arranged in opposite directions, and a piston rod of the first cylinder and a piston rod of the second cylinder are connected with the first extrusion plate and the second extrusion plate respectively.
Preferably, the first pressing plate and the second pressing plate are respectively connected with the first cylinder and the second cylinder through connecting parts.
Preferably, the sizing mechanism is positioned on a subsequent station of the rear forming die and can glue the top surface and the bottom surface of the S-shaped reinforcing rib.
The invention has the advantages that: the S-shaped hollow plate can be continuously produced, the production efficiency of the S-shaped hollow plate is obviously improved, and meanwhile, the production cost can be reduced.
Drawings
Fig. 1 is a schematic view illustrating a rear molding die being away from a front molding die in the molding apparatus for S-shaped hollow plate provided in this embodiment;
FIG. 2 is a schematic view of the compression plate assembly of this embodiment engaged within the channel of the base;
FIG. 3 is a schematic view of the rear forming die close to the front forming die in the S-shaped hollow plate provided by the present embodiment;
fig. 4 is a schematic view of a first pressing plate provided in this embodiment;
FIG. 5 is a schematic view of the upper plate forming mold according to this embodiment
FIG. 6 is a schematic view of a pre-mold provided in the present embodiment;
fig. 7 is a schematic diagram of the composite mechanism provided in this embodiment.
Detailed Description
The forming apparatus of the S-shaped hollow plate according to the present invention will be further described with reference to fig. 1 to 7.
The utility model provides a forming device of hollow plate in S type which characterized by: the device comprises a frame 1, and an upper plate forming mechanism 5, an S-shaped reinforcing rib forming mechanism 2, a lower plate forming mechanism 6 and a compounding mechanism 4 which are arranged on the frame 1. The upper plate forming mechanism 5 and the lower plate forming mechanism 6 are respectively located above and below the S-shaped reinforcing rib forming mechanism 2, and each include an extruder 52/61 for supplying a raw material and a plate body forming die for extruding the raw material into a plate body. The plate forming die corresponding to the upper plate forming mechanism 5 is the upper plate forming die 51 and extrudes the raw material into the upper plate 81, the plate forming die corresponding to the lower plate forming mechanism 6 is the lower plate forming die 62 and extrudes the raw material into the lower plate 82, and the extrusion of the raw material into the plate is the prior art, so the detailed structure of the upper plate forming die 51 and the lower plate forming die 62 is not described in detail in this embodiment. The S-shaped reinforcing bar forming mechanism 2 includes an extruder 23 that supplies a raw material, a front forming die 21 that receives the raw material and extrudes the raw material into the linear reinforcing bars 6, and a rear forming die 22 that receives the linear reinforcing bars and extrudes the linear reinforcing bars into the S-shaped reinforcing bars 5. The composite mechanism 4 simultaneously receives the upper plate 81, the S-shaped reinforcing ribs 5 and the lower plate 82, and composites the upper plate, the S-shaped reinforcing ribs and the lower plate into an upper structure, a middle structure and a lower structure to form the S-shaped hollow plate 9.
In the above process, one extruder may be provided to supply the upper plate forming die 51, the front forming die 21, and the lower plate forming die 62 at the same time, or three extruders may be provided to supply the three forming dies separately. In this example, three extruders were used to feed each.
In this embodiment, in order to facilitate the upper, middle and lower distribution of the upper plate forming mold 51, the S-shaped reinforcing rib forming mechanism 2 and the lower body forming mold 62, the frame 1 has an upper frame 13 for mounting the upper plate forming mold 51, a middle frame 11 for mounting the S-shaped reinforcing rib forming mechanism 2 and a table 12 for mounting the lower plate forming mold 62.
Specifically, a front molding die 21 is installed at a front position of the middle layer frame body 11, and the front molding die 21 is used for extruding the raw material into the bar-shaped structure 6, which is a prior art and will not be described in detail in this embodiment. The rear forming die 22 includes a slide plate 221, a base 223, a squeeze plate assembly and a drive assembly 24. The sliding plate 221 is slidably fitted on the middle layer frame body 11 and located at a subsequent station of the front forming die 21. The driving assembly is connected to the slide plate 221 and drives the slide plate 221 to reciprocate toward or away from the front molding die 21. The base 223 is fixed to the sliding plate 221 by bolts, and has a passage in the base 223 through which the linear reinforcing ribs pass. The extrusion plate assembly includes a cylinder block and a plurality of S-shaped extrusion plate sets 222 disposed in the base passage, the plurality of S-shaped extrusion plate sets 222 are arranged perpendicular to the conveying direction of the reinforcing bars, each of the S-shaped extrusion plate sets 222 includes a first extrusion plate 2221 and a second extrusion plate 2222, a forming groove 2223 is formed between the first extrusion plate 2221 and the second extrusion plate 2222, and the first extrusion plate 2221 and the second extrusion plate 2222 are connected to the cylinder block and driven by the cylinder block to move the first extrusion plate 2221 and the second extrusion plate 2222 in opposite directions, so as to realize extrusion forming or loosening of the straight reinforcing bars.
In this embodiment, the driving assembly is a ball screw assembly, which is disposed between the sliding plate 221 and the middle frame 11, that is, the nut sleeve 243 is installed on the bottom wall of the sliding plate 221, the screw 241 is installed on the middle frame 11 and is matched with the nut sleeve 243, and the motor 242 is installed on the middle frame 11 and is connected with the screw 241, so as to drive the sliding plate 221 to reciprocate.
The cylinder group includes a first cylinder 224 and a second cylinder 225 which are oppositely disposed, and a piston rod of the first cylinder 224 and a piston rod of the second cylinder 225 are connected to a first pressing plate 2221 and a second pressing plate 2222, respectively. Connecting portions 22211 having connecting holes 22212 fitted to the piston rods are formed at upper sides of both ends of the first and second pressing plates 2221 and 2222, and the first and second pressing plates 2221 and 2222 are connected to the first and second cylinders 224 and 225, respectively, through the connecting portions 22211. The connecting portions 22211 are provided at the upper sides of both ends of the first pressing plate 2221 or the second pressing plate 2222, and can avoid the reinforcing ribs during transmission.
The composite mechanism 4 is a plate body with a straight line channel, and the inlet of the channel is in arc transition so as to protect the upper plate body and the lower plate body which enter the channel. And traction rollers 7 are arranged at both the inlet and the outlet of the channel.
The forming device of the S-shaped hollow plate further comprises a gluing mechanism 3, wherein the gluing mechanism 3 is positioned on a subsequent station of the rear forming die 22, namely, the rear forming die is installed on the middle layer frame body 11 through bolts, and the top surface and the bottom surface of the S-shaped reinforcing rib can be glued. The gluing mechanism 3 comprises a gluing box 32, a gluing box 34, a gluing roller 31 positioned in the gluing box 32 and a gluing roller 33 positioned in the gluing box 34. After the S-shaped reinforcing ribs are glued, the S-shaped reinforcing ribs can be conveniently combined with the upper plate body and the lower plate body.
Based on the structure, the production method of the S-shaped hollow plate comprises the following steps:
s1, putting raw materials into three extruding machines, and feeding materials through the three extruding machines;
s2, dividing the raw materials provided by the plastic extruding machine into an upper forming conveying line, a middle forming conveying line and a lower forming conveying line, and extruding the raw materials into an upper plate body, an S-shaped reinforcing rib and a lower plate body which are distributed from top to bottom by utilizing the three forming conveying lines;
s3, gluing the upper side and the lower side of the S-shaped reinforcing rib;
and S4, compounding the upper plate body, the S-shaped reinforcing ribs and the lower plate body in a distributed state from top to bottom to form the S-shaped hollow plate.
In the S-shaped reinforcing rib forming conveyor line of step S2, the raw material is extruded into the linear reinforcing ribs 6 through the front molding die 21, and then the linear reinforcing ribs 6 enter the passages in the rear molding die 22, and the linear reinforcing ribs are extruded into the S-shaped reinforcing ribs 5 through the S-shaped extrusion plate group 222.
In the extrusion process of the rear forming die 22, the first air cylinder 224 and the second air cylinder 225 drive the first extrusion plate 2221 and the second extrusion plate 2222 to move oppositely, so as to extrude the linear reinforcing ribs into an S-shaped structure, and in the process that the first extrusion plate 2221 and the second extrusion plate 2222 clamp the reinforcing ribs, the ball screw pair drives the rear forming die 22 to move synchronously along with the reinforcing ribs; after extrusion forming is carried out within a certain time, the first air cylinder 224 and the second air cylinder 225 drive the first extrusion plate 2221 and the second extrusion plate 2222 to move reversely, so that the formed S-shaped reinforcing ribs are loosened; after the release, the ball screw 241 pair drives the rear molding die 22 to move toward the front molding die 21, and the rear molding die 22 continues the extrusion molding of the straight reinforcing rib just fed out from the front molding die 21, thereby circulating.
In the above process, cooling water paths are provided in the base 223 of the front molding die 21 and the rear molding die 22, the upper plate molding die 51, the lower plate molding die 62, and the composite mechanism 4. After the raw materials pass through the upper forming die and the lower forming die, the raw materials are preliminarily shaped, but certain softness still exists, and the softness does not influence the raw materials to enter the compound mechanism 4; the upper plate body and the lower plate body are completely cooled after passing through the compound mechanism 4; after the raw material passes through the front forming die 21, the raw material still has certain softness so as to be convenient for the extrusion of the S-shaped extrusion plate group 222, meanwhile, the softness does not influence the feeding of the raw material into the rear forming die 22, and the reinforcing ribs are completely cooled and formed after passing through the rear forming die 22.
Unless otherwise specified, in the present invention, if the terms "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the orientation or positional relationship in the present invention are only used for exemplary illustration and are not to be construed as limiting the present patent, and those skilled in the art can understand the specific meaning of the above terms according to the specific situation by combining the drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (4)
1. The utility model provides a forming device of hollow plate in S type which characterized by: the device comprises a rack, and an upper plate forming mechanism, an S-shaped reinforcing rib forming mechanism, a lower plate forming mechanism and a composite mechanism which are arranged on the rack;
the upper plate forming mechanism and the lower plate forming mechanism are respectively positioned above and below the S-shaped reinforcing rib forming mechanism and respectively comprise an extruder for providing raw materials and a plate body forming die for respectively extruding the raw materials into an upper plate body and a lower plate body;
the S-shaped reinforcing rib forming mechanism comprises an extruder for providing raw materials, a front forming die for receiving the raw materials and extruding the raw materials into the linear reinforcing ribs and a rear forming die for receiving the linear reinforcing ribs and extruding the linear reinforcing ribs into the S-shaped reinforcing ribs;
the composite mechanism simultaneously receives the upper plate body, the S-shaped reinforcing ribs and the lower plate body, and composites the upper plate body, the S-shaped reinforcing ribs and the lower plate body into an upper structure, a middle structure and a lower structure to form an S-shaped hollow plate,
the rear forming die comprises a sliding plate, a base, an extrusion plate assembly and a driving assembly;
the sliding plate is in sliding fit with the rack;
the driving assembly is connected with the sliding plate and drives the sliding plate to move towards or back to the front forming die in a reciprocating mode;
the base is fixed on the sliding plate, and a channel for the linear reinforcing ribs to pass through is formed in the base;
the extrusion plate assembly comprises a cylinder group and a plurality of groups of S-shaped extrusion plate groups arranged in the channel, each group of S-shaped extrusion plate groups comprises a first extrusion plate and a second extrusion plate, a forming groove is formed between the first extrusion plate and the second extrusion plate, the first extrusion plate and the second extrusion plate are connected with the cylinder group, and the cylinder group drives the first extrusion plate and the second extrusion plate to move reversely or oppositely.
2. The apparatus for forming an S-shaped hollow plate according to claim 1, wherein: the cylinder group comprises a first cylinder and a second cylinder which are arranged in an opposite mode, and a piston rod of the first cylinder and a piston rod of the second cylinder are connected with the first extrusion plate and the second extrusion plate respectively.
3. The apparatus for forming an S-shaped hollow plate according to claim 2, wherein: connecting parts are formed on the upper sides of the two ends of the first extrusion plate and the second extrusion plate, and the first extrusion plate and the second extrusion plate are respectively connected with the first air cylinder and the second air cylinder through the connecting parts.
4. The apparatus for forming an S-shaped hollow plate according to claim 1, wherein: the gluing mechanism is positioned on a subsequent station of the rear forming die and can glue the top surface and the bottom surface of the S-shaped reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593935.7A CN112643986B (en) | 2020-12-29 | 2020-12-29 | Forming device for S-shaped hollow plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593935.7A CN112643986B (en) | 2020-12-29 | 2020-12-29 | Forming device for S-shaped hollow plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112643986A CN112643986A (en) | 2021-04-13 |
| CN112643986B true CN112643986B (en) | 2023-03-24 |
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| CN202011593935.7A Active CN112643986B (en) | 2020-12-29 | 2020-12-29 | Forming device for S-shaped hollow plate |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830064B (en) * | 2010-05-25 | 2012-07-04 | 阮中亮 | Device with rib plastic formwork formed by extrusion molding |
| CN102829318B (en) * | 2012-09-24 | 2015-04-01 | 李保银 | Composite plastic board supported by ribs and production method thereof |
| CN102990896B (en) * | 2012-12-21 | 2014-12-24 | 浙江精诚模具机械有限公司 | Multilayer composite hollow plate extrusion die head |
| CN105863251A (en) * | 2016-05-20 | 2016-08-17 | 宁夏钻通管道铺设服务有限公司 | Plastic building template and producing technique thereof |
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Denomination of invention: Forming device for S-shaped hollow board Effective date of registration: 20230928 Granted publication date: 20230324 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Zhouwei Branch Pledgor: Zhejiang Zhapu plastic products Co.,Ltd. Registration number: Y2023980059535 |