CN110900999A - Fiber-reinforced starch composite material quick-drying and setting device - Google Patents
Fiber-reinforced starch composite material quick-drying and setting device Download PDFInfo
- Publication number
- CN110900999A CN110900999A CN201911135111.2A CN201911135111A CN110900999A CN 110900999 A CN110900999 A CN 110900999A CN 201911135111 A CN201911135111 A CN 201911135111A CN 110900999 A CN110900999 A CN 110900999A
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- China
- Prior art keywords
- drying
- shaping
- die
- composite material
- heating
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
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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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
本发明涉及制品干燥定型技术领域，公开一种纤维增强淀粉复合材料快干定型装置，包括注射成型机、定型公模、加热公模及可与定型公模、加热公模适配的母模，注射成型机末端具有射嘴，母模上开设与射嘴适配的进料嘴，母模底部固定有滑动支座，滑动支座下方设有滑轨供滑动支座滑移使母模在定型公模和加热公模之间移动。复合材料历经定型和干燥两道工序，而在定型过程中即通过定型公模上的多孔网可排出浆料中的多余水分，此即初次干燥，随后在干燥公模处进行终极干燥，两次干燥双管齐下，保证最终的干燥效果；加热公模的多孔网上设置高周波发生器可有效加快加热进度，便于制品中的水分快速蒸发。
The invention relates to the technical field of product drying and shaping, and discloses a fiber-reinforced starch composite material quick-drying and shaping device, comprising an injection molding machine, a shaping male mold, a heating male mold, and a female mold that can be matched with the shaping male mold and the heating male mold, There is a nozzle at the end of the injection molding machine, and a feeding nozzle that matches the nozzle is set on the master mold. A sliding support is fixed at the bottom of the master mold, and a sliding rail is provided under the sliding support for the sliding support to slide so that the master mold can be shaped. Move between male mold and heated male mold. The composite material undergoes two processes of setting and drying, and during the setting process, the excess water in the slurry can be discharged through the porous mesh on the setting male mold, which is the primary drying, followed by final drying at the drying male mold, twice. The two-pronged drying process ensures the final drying effect; the high-frequency generator set on the porous mesh of the heating male mold can effectively speed up the heating progress and facilitate the rapid evaporation of water in the product.
Description
Technical Field
The invention relates to the technical field of product drying and shaping, in particular to a quick-drying and shaping device for a fiber reinforced starch composite material.
Background
Starch is a renewable recyclable green material from natural plants, can be used as grain for human use, and is widely applied to the fields of chemical industry and new materials for preparing various composite materials. Due to the excellent biodegradability, starch is generally used as filling to prepare thermoplastic high-biochar-content bio-based composite materials, is widely applied to disposable products, and is more and more valued by people in the large environment that petrochemical resources are increasingly in shortage and white pollution is increasingly serious at present. The plant fiber is used as another natural renewable resource with wide source, is used as a main raw material of the bio-based composite material for synthesis and manufacture of new materials, is applied to papermaking, wood-plastic composite materials and the like, and effectively promotes the application of the environment-friendly bio-based composite material. Many researches have been carried out to add starch and plant fiber as filling components into plastic materials for preparing novel composite materials, and the addition of the plant fiber can change the characteristics of the traditional pure plastic materials, so that the processing technology is more complicated and is more difficult to control. Moreover, most of the materials cannot be degraded after being mixed with the plastic resin, and the recyclability of the composite material is affected.
There has also been much research and application in which natural plants are made into pulp, and a heterogeneous product is produced through a pulp molding process, and is called stereolithography. Although the process can obtain fully-degradable pure natural products without plastic components, the forming process is relatively complex, the energy consumption is high, the yield is low, and the application is greatly limited. If the plant fiber, the starch and the adhesive component are prepared into a sizing agent with a certain concentration and the sizing agent is prepared into a special-shaped product through injection molding, the special-shaped product has very important application value. But the technical difficulty is how to quickly discharge the water in the slurry and accelerate the shaping of the product. The traditional process adopts an electric heating process, but has high energy consumption and slow water evaporation, and is difficult to simultaneously maintain the quality and the efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the quick-drying and shaping device for the fiber reinforced starch composite material, which has high drying speed and high yield.
The purpose of the invention is realized by the following technical scheme:
a quick-drying and shaping device for a fiber reinforced starch composite material comprises an injection molding machine, a shaping male die, a heating male die and a female die which can be matched with the shaping male die and the heating male die, wherein a nozzle is arranged at the tail end of the injection molding machine, a feeding nozzle matched with the nozzle is arranged on the female die, a sliding support is fixed at the bottom of the female die, and a sliding rail is arranged below the sliding support and used for the sliding support to slide so that the female die can move between the shaping male die and the heating male die.
Furthermore, the surface of the shaping male die matched with the female die is provided with a porous net with the same structure as the die cavity.
Furthermore, a porous net with the same structure as the cavity is arranged on the surface of the heating male die matched with the female die.
Further, the mesh openings on the porous net are uniformly distributed.
Still further, the mesh size is uniform.
Furthermore, the shaping male die is also provided with a compressed gas inlet, and compressed gas can enter the die cavity along the porous net.
Furthermore, the heating male die is provided with a high-frequency generator inside the porous net.
Further, the injection molding machine is a single screw injection molding machine.
Compared with the prior art, the invention has the following beneficial effects:
1) the composite material is subjected to two procedures of shaping and drying, redundant moisture in the slurry can be discharged through a porous net on a shaping male die in the shaping process, namely primary drying is carried out, final drying is carried out at the drying male die, and the final drying effect is ensured under the condition of two drying processes;
2) the high-frequency generator is arranged on the porous net of the heating male die, so that the heating progress can be effectively accelerated, and the rapid evaporation of water in the product is facilitated;
3) the shaping male die can inject compressed gas into the die cavity through the porous net, so that the products of the shaping male die and the female die can smoothly fall into the female die in the demolding process, and the demolding efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a plant fiber reinforced starch sheet quick-drying and shaping device according to example 1.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the drawings are provided for illustrative purposes only and are not intended to be limiting; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, a quick-drying and setting device for a fiber reinforced starch composite material comprises an injection molding machine 1, a hopper 2 for feeding materials to the injection molding machine, a setting male die 3, a heating male die 4 and a female die 5 capable of being matched with the setting male die and the heating male die, wherein a nozzle 11 is arranged at the tail end of the injection molding machine 1, a feeding nozzle 51 matched with the nozzle is arranged on the female die 5, a sliding support 6 is fixed at the bottom of the female die 5, and a slide rail 7 is arranged below the sliding support 6 and used for the sliding support to slide so that the female die can move between the setting male die and the heating male die.
After the plant fiber reinforced starch composite material slurry is injected into the female die 5 from the injection molding machine, the shaping male die 3 and the female die 5 are firstly closed to carry out product shaping, after the shaping process is finished, the shaping male die 3 and the female die 5 are demoulded, the sliding support 6 drives the female die 5 to move along the sliding rail to the position below the heating male die 4, the heating male die 4 and the female die 5 are closed, and the shaped product is dried.
In order to enhance the drying effect of the product, the primary drying can be carried out in the shaping stage of the product, so that the porous net 8 with the same structure as the cavity 52 is arranged on the surface of the shaping male die 3 matched with the female die 5, and the moisture in the slurry injected into the cavity of the female die can enter the shaping male die through the meshes 81 on the porous net and be discharged.
In addition, the surface of the heating male die 4 matched with the female die 5 is also provided with a porous net 8 with the same structure as the die cavity, the porous net is the same as the porous net structure on the shaping male die, the heating male die is provided with a high-frequency generator (not shown) inside the porous net 8, and after the heating male die 4 is matched with the female die 5, the high-frequency generator can effectively accelerate the heating progress, so that the moisture in the product can be quickly evaporated and evaporated out through the porous net 8.
The mesh holes 81 on the porous net have uniform thickness and are uniformly distributed on the porous net to ensure the drying effect at all positions in the mold cavity.
In order to ensure that the shaping male die and the female die can be smoothly demoulded when the female die needs to be transferred to the heating male die, the shaping male die 3 is also provided with a compressed gas inlet (not shown), and compressed gas can be blown into the die cavity along the porous net 81, so that the product can smoothly fall into the female die 5 under the pressure of the compressed gas.
The injection molding machine 1 of the embodiment is a single screw injection molding machine, and the single screw injection molding machine does not need to be heated and can be kept at normal temperature in the process of quick drying and molding of the composite material.
In the embodiment, the product formed by injection molding of the fiber reinforced starch composite material slurry is subjected to twice drying means and is quickly evaporated by combining a high-frequency quick heating mode, so that quick drying is ensured, and product forming is completed.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A quick-drying and shaping device for a fiber reinforced starch composite material is characterized by comprising an injection molding machine, a shaping male die, a heating male die and a female die which can be matched with the shaping male die and the heating male die, wherein a nozzle is arranged at the tail end of the injection molding machine, a feeding nozzle matched with the nozzle is arranged on the female die, a sliding support is fixed at the bottom of the female die, and a sliding rail is arranged below the sliding support and used for the sliding support to slide so that the female die can move between the shaping male die and the heating male die.
2. The quick-drying and sizing device for fiber reinforced starch composite material according to claim 1, wherein the surface of the sizing male die matched with the female die is provided with a porous net with the same structure as the die cavity.
3. The apparatus of claim 1, wherein the heated male mold has a porous mesh with the same structure as the mold cavity on the surface matched with the female mold.
4. A quick-drying and setting device of fiber reinforced starch composite material according to claim 2 or 3, characterized in that the mesh holes on the porous net are evenly distributed.
5. The fiber reinforced starch composite quick-drying and setting device according to claim 4, wherein the mesh has uniform thickness.
6. The apparatus for quick-drying and setting fiber-reinforced starch composite material according to claim 2, wherein the setting male mold further comprises a compressed gas inlet, and the compressed gas can enter the mold cavity along the porous net.
7. The device for quick-drying and setting fiber reinforced starch composite material according to claim 3, wherein the heating male die is provided with a high frequency generator inside the porous net.
8. The fiber reinforced starch composite quick-drying and setting device of claim 1, wherein the injection molding machine is a single screw injection molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135111.2A CN110900999A (en) | 2019-11-19 | 2019-11-19 | Fiber-reinforced starch composite material quick-drying and setting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135111.2A CN110900999A (en) | 2019-11-19 | 2019-11-19 | Fiber-reinforced starch composite material quick-drying and setting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110900999A true CN110900999A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911135111.2A Pending CN110900999A (en) | 2019-11-19 | 2019-11-19 | Fiber-reinforced starch composite material quick-drying and setting device |
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| JPH04185316A (en) * | 1990-11-16 | 1992-07-02 | Mitsubishi Plastics Ind Ltd | Plating molding device within mold |
| JPH0784019B2 (en) * | 1992-02-24 | 1995-09-13 | 株式会社三▼しゅう▼モールド | Manufacturing method of resin assembly parts |
| CN2230772Y (en) * | 1995-01-25 | 1996-07-10 | 李福来 | Special mould for producing products from paper pulp |
| CN2344422Y (en) * | 1998-11-27 | 1999-10-20 | 东北大学 | A pulp molding machine |
| CN2514028Y (en) * | 2001-12-04 | 2002-10-02 | 浙江科威轻工发展有限责任公司 | Fully-automatic shaper for snack box moulded with paperpulp |
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