CN115556399A - Injection molding preparation process of environment-friendly student desk and stool - Google Patents
Injection molding preparation process of environment-friendly student desk and stool Download PDFInfo
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- CN115556399A CN115556399A CN202211336460.2A CN202211336460A CN115556399A CN 115556399 A CN115556399 A CN 115556399A CN 202211336460 A CN202211336460 A CN 202211336460A CN 115556399 A CN115556399 A CN 115556399A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0092—Producing upholstery articles, e.g. cushions, seats
Abstract
The invention belongs to the technical field of injection molding, and particularly discloses an injection molding preparation process of an environment-friendly student desk stool, which comprises the following steps: step 1, raw material treatment: crushing various wastes into chips, sieving the chips with a 40-80-mesh sieve, and preparing a plasticizer, an internal release agent and plastics; step 2 preparation of green compacts: heating and stirring the waste scraps, the plasticizer, the release agent and the plastic prepared in the step 1 to obtain a blank; step 3, preparing a die: preparing a steel die in the shape of a desk stool by using a steel plate, and coating an external release agent on the surface of the steel die; step 4, compression molding: extruding the blank obtained in the step 2 into the steel die prepared in the step 3 by using an injection molding machine, cooling, and taking down the steel die to obtain an injection-molded environment-friendly student desk stool; step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product. By adopting the scheme of the invention, not only a large amount of waste is recycled, but also the environment-friendly student desk and stool is obtained by utilizing lower cost.
Description
Technical Field
The invention belongs to the technical field of injection molding, and particularly relates to an injection molding preparation process of an environment-friendly student desk stool.
Background
Injection molding is a method for producing a model of an industrial product, and the product is generally produced by using rubber injection molding and plastic injection molding, and the injection molding can be divided into injection molding press molding and die casting. An injection molding machine (an injection machine or an injection molding machine for short) is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by the injection molding machine and the die.
Along with the development of human life, the quality of material life is greatly improved, and meanwhile, a large amount of waste books, newspapers, wood residues and the like are generated, wherein the waste is crushed to be used as filler in a blank, and plastic is mixed and injected or extruded into a mold prepared in advance, so that the obtained corresponding product component is the hot direction of recycling the waste at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an injection molding preparation process of an environment-friendly student desk stool, so as to recycle a large amount of waste and realize that the environment-friendly student desk stool is obtained at lower cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
an injection molding preparation process of an environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, sieving the chips with a 40-80-mesh sieve, and preparing a plasticizer, an internal release agent and plastics;
step 2 preparation of green compacts: heating and stirring the waste scraps, the plasticizer, the release agent and the plastic prepared in the step 1 to obtain a blank;
step 3, preparing a die: preparing a steel mould in the shape of a desk stool by using a steel plate, and coating an external release agent on the surface of the steel mould;
and step 4, compression molding: extruding the blank obtained in the step 2 into the steel die prepared in the step 3 by using an injection molding machine, cooling, and taking down the steel die to obtain an injection-molded environment-friendly student desk stool;
step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
Further, the wastes in the step 1 comprise waste books, waste newspapers, waste wood residues and waste stone powder.
Further, dividing the waste scraps in the step 1 into two equal parts, wherein one part is sieved by a 40-mesh sieve, the other part is sieved by a 60-mesh sieve, and then uniformly mixing the two parts of the waste scraps which are respectively sieved.
Further, dividing the waste scraps in the step 1 into two equal parts, wherein one part is sieved by a 40-mesh sieve, the other part is sieved by a 80-mesh sieve, and then uniformly mixing the two respectively sieved waste scraps.
Further, the waste fragments are divided into three equal parts, wherein the first part is sieved by a 40-mesh sieve, the second part is sieved by a 60-mesh sieve, the third part is sieved by a 80-mesh sieve, and then the three parts of the waste fragments which are respectively sieved are uniformly mixed.
Further, in the step 2, the heating and stirring temperature is 300 to 350 ℃, and the stirring speed is 300 to 350 r/min.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an injection molding preparation process of an environment-friendly student desk stool, which can recycle a large amount of waste and realize the preparation of the environment-friendly student desk stool with lower cost; in addition, in the invention, the strength of the prepared finished product is improved by mixing waste scraps with different thicknesses; the specific principle is that the chips with larger meshes can play a role of skeleton support, especially the waste wood residues, and the chips with small meshes can play a role of filling tissues, so that the strength of the finished product is ensured.
Drawings
Fig. 1 is a process flow chart of an embodiment 1 of the injection molding preparation process of the environment-friendly student desk stool of the invention.
Detailed Description
The invention is further described in detail below with reference to the accompanying drawings, and specific embodiments are given.
Example 1:
as shown in figure 1, the injection molding preparation process of the environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, and sieving the chips through a 40-mesh sieve, wherein the wastes in the embodiment comprise waste books, waste newspapers, waste wood residues and waste stone powder, drying the sieved chips at the temperature of 70-80 ℃, and preparing a plasticizer, an internal release agent and plastics.
In this example, the waste chips were 100 parts by weight, the plasticizer 2 parts by weight, the internal mold release agent 3 parts by weight, and the plastic 50 parts by weight. The plasticizer in this example is nitrile butadiene rubber.
Step 2 preparation of green compacts: and (2) heating and stirring the waste scraps, the plasticizer, the release agent and the plastics prepared in the step (1) in a stirrer at the heating temperature of 350 ℃, wherein the stirring speed is 350r/min, and the stirring time is 10min, so that the raw materials are uniformly mixed to obtain a blank.
Step 3, preparing a die: the steel mould in the shape of the desk stool is prepared by utilizing a steel plate, and an external release agent is coated on the surface of the steel mould.
Step 4, injection molding: and (3) extruding the blank obtained in the step (2) into the steel die prepared in the step (3) by using an injection molding machine, cooling, and taking off the steel die to obtain the injection-molded environment-friendly student desk stool.
Step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
Example 2:
the difference from the embodiment 1 is that the injection molding preparation process of the environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, and sieving the chips through a 60-mesh sieve, wherein the wastes in the embodiment comprise waste books, waste newspapers, waste wood residues and waste stone powder, drying the sieved chips at the temperature of 70-80 ℃, and preparing a plasticizer, an internal release agent and plastics.
In this example, the waste chips were 100 parts by weight, the plasticizer 3 parts by weight, the internal mold release agent 4 parts by weight, and the plastic 55 parts by weight. The plasticizer in this example is nitrile butadiene rubber.
Step 2 preparation of green compacts: and (2) heating and stirring the waste scraps, the plasticizer, the release agent and the plastics prepared in the step (1) in a stirrer at the heating temperature of 300 ℃, wherein the stirring speed is 300r/min, and the stirring time is 10min, so that the raw materials are uniformly mixed to obtain a blank.
Step 3, preparing a die: the steel mould in the shape of the desk stool is prepared by utilizing a steel plate, and an external release agent is coated on the surface of the steel mould.
Step 4, injection molding: and (3) extruding the blank obtained in the step (2) into the steel die prepared in the step (3) by using an injection molding machine, cooling, and taking down the steel die to obtain the injection-molded environment-friendly student desk stool.
Step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
Example 3:
the difference from the embodiment 1 is that the injection molding preparation process of the environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, and sieving the chips through a 80-mesh sieve, wherein the wastes in the embodiment comprise waste books, waste newspapers, waste wood residues and waste stone powder, drying the sieved chips at the temperature of 70-80 ℃, and preparing a plasticizer, an internal release agent and plastics.
In this example, the waste chips were 100 parts by weight, the plasticizer 2 parts by weight, the internal mold release agent 3 parts by weight, and the plastic 50 parts by weight. The plasticizer in this example is nitrile butadiene rubber.
Step 2 preparation of green compacts: and (2) heating and stirring the waste scraps, the plasticizer, the release agent and the plastics prepared in the step (1) in a stirrer at the heating temperature of 300 ℃, wherein the stirring speed is 300r/min, and the stirring time is 10min, so that the raw materials are uniformly mixed to obtain a blank.
Step 3, preparing a die: the steel mould in the shape of the desk stool is prepared by utilizing a steel plate, and an external release agent is coated on the surface of the steel mould.
Step 4, injection molding: and (3) extruding the blank obtained in the step (2) into the steel die prepared in the step (3) by using an injection molding machine, cooling, and taking down the steel die to obtain the injection-molded environment-friendly student desk stool.
Step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
Example 4:
the difference from the embodiment 1 is that the injection molding preparation process of the environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, dividing the waste chips into two equal parts, sieving one part of the waste chips with a 40-mesh sieve and sieving the other part of the waste chips with a 60-mesh sieve, and then uniformly mixing the two parts of the waste chips which are respectively sieved, wherein the wastes in the embodiment comprise waste books, waste newspapers, waste wood residues and waste stone powder, drying the sieved chips at the temperature of 70-80 ℃, and preparing a plasticizer, an internal mold release agent and plastics.
In this example, the waste chips are 100 parts by weight, 2 parts by weight of a plasticizer, 3 parts by weight of an internal mold release agent, and 50 parts by weight of a plastic. The plasticizer in this example is nitrile butadiene rubber.
Step 2 preparation of green compacts: and (2) heating and stirring the waste scraps, the plasticizer, the release agent and the plastics prepared in the step (1) in a stirrer at the heating temperature of 300 ℃, wherein the stirring speed is 300r/min, and the stirring time is 10min, so that the raw materials are uniformly mixed to obtain a blank.
Step 3, preparing a die: the steel mould in the shape of the desk stool is prepared by utilizing a steel plate, and an external release agent is coated on the surface of the steel mould.
Step 4, injection molding: and (3) extruding the blank obtained in the step (2) into the steel die prepared in the step (3) by using an injection molding machine, cooling, and taking down the steel die to obtain the injection-molded environment-friendly student desk stool.
Step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
Example 5:
the difference from the embodiment 1 is that the injection molding preparation process of the environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, dividing the waste chips into two equal parts, sieving one part of the waste chips with a 40-mesh sieve and sieving the other part of the waste chips with a 80-mesh sieve, and then uniformly mixing the two parts of the waste chips which are respectively sieved, wherein the wastes in the embodiment comprise waste books, waste newspapers, waste wood residues and waste stone powder, drying the sieved chips at the temperature of 70-80 ℃, and preparing a plasticizer, an internal mold release agent and plastics.
In this example, the waste chips were 100 parts by weight, the plasticizer 2 parts by weight, the internal mold release agent 3 parts by weight, and the plastic 50 parts by weight. The plasticizer in this example is nitrile butadiene rubber.
Step 2 preparation of green compacts: and (2) heating and stirring the waste scraps, the plasticizer, the release agent and the plastics prepared in the step (1) in a stirrer at the heating temperature of 300 ℃, wherein the stirring speed is 300r/min, and the stirring time is 10min, so that the raw materials are uniformly mixed to obtain a blank.
Step 3, preparing a die: the steel mould in the shape of the desk stool is prepared by utilizing a steel plate, and an external release agent is coated on the surface of the steel mould.
Step 4, injection molding: and (3) extruding the blank obtained in the step (2) into the steel die prepared in the step (3) by using an injection molding machine, cooling, and taking down the steel die to obtain the injection-molded environment-friendly student desk stool.
Step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
Example 6:
the difference from the embodiment 1 is that the injection molding preparation process of the environment-friendly student desk stool comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, dividing the waste chips into three equal parts, wherein the first part is sieved by a 40-mesh sieve, the second part is sieved by a 60-mesh sieve, the third part is sieved by a 80-mesh sieve, and then uniformly mixing the three parts of respectively sieved waste chips, wherein the wastes in the embodiment comprise waste books, waste newspapers, waste wood residues and waste stone powder, drying the sieved chips at the temperature of 70-80 ℃, and preparing a plasticizer, an internal mold release agent and plastics.
In this example, the waste chips were 100 parts by weight, the plasticizer 2 parts by weight, the internal mold release agent 3 parts by weight, and the plastic 50 parts by weight. The plasticizer in this example is nitrile butadiene rubber.
Step 2 preparation of green compacts: and (2) heating and stirring the waste scraps, the plasticizer, the release agent and the plastics prepared in the step (1) in a stirrer at the heating temperature of 300 ℃, wherein the stirring speed is 300r/min, and the stirring time is 10min, so that the raw materials are uniformly mixed to obtain a blank.
Step 3, preparing a die: the steel mould in the shape of the desk stool is prepared by utilizing a steel plate, and an external release agent is coated on the surface of the steel mould.
Step 4, injection molding: and (3) extruding the blank obtained in the step (2) into the steel die prepared in the step (3) by using an injection molding machine, cooling, and taking down the steel die to obtain the injection-molded environment-friendly student desk stool.
Step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. An injection molding preparation process of an environment-friendly student desk stool, which is characterized by comprising the following steps: the method comprises the following steps:
step 1, raw material treatment: crushing various wastes into chips, sieving the chips with a 40-80 mesh sieve, and preparing a plasticizer, an internal release agent and plastics;
step 2 preparation of green compacts: heating and stirring the waste scraps, the plasticizer, the release agent and the plastic prepared in the step 1 to obtain a blank;
step 3, preparing a die: preparing a steel die in the shape of a desk stool by using a steel plate, and coating an external release agent on the surface of the steel die;
step 4, compression molding: extruding the blank obtained in the step 2 into the steel die prepared in the step 3 by using an injection molding machine, cooling, and taking down the steel die to obtain an injection-molded environment-friendly student desk stool;
step 5, surface treatment: and (4) polishing, spraying paint or carrying out surface three-dimensional printing and coloring on the injection molding product obtained in the step (4) to obtain a finished product.
2. The injection molding preparation process of the environment-friendly student desk stool as claimed in claim 1, wherein the injection molding preparation process comprises the following steps: the waste in the step 1 comprises waste books, waste newspapers, waste wood residues and waste stone powder.
3. The injection molding preparation process of the environment-friendly student desk stool as claimed in claim 2, wherein the injection molding preparation process comprises the following steps: and (2) dividing the waste scraps in the step (1) into two equal parts, wherein one part is sieved by a 40-mesh sieve, the other part is sieved by a 60-mesh sieve, and then uniformly mixing the two parts of respectively sieved waste scraps.
4. The injection molding preparation process of the environment-friendly student desk stool as claimed in claim 2, wherein the injection molding preparation process comprises the following steps: dividing the waste scraps in the step 1 into two equal parts, wherein one part is sieved by a 40-mesh sieve, the other part is sieved by an 80-mesh sieve, and then uniformly mixing the two parts of respectively sieved waste scraps.
5. The injection molding preparation process of the environment-friendly student desk stool as claimed in claim 2, wherein the injection molding preparation process comprises the following steps: and dividing the waste scraps into three equal parts, wherein the first part is sieved by a 40-mesh sieve, the second part is sieved by a 60-mesh sieve, the third part is sieved by a 80-mesh sieve, and then the three parts of the waste scraps sieved respectively are uniformly mixed.
6. The injection molding preparation process of the environment-friendly student desk stool as claimed in claim 5, wherein the injection molding preparation process comprises the following steps: in the step 2, the heating and stirring temperature is 300 to 350 ℃, and the stirring speed is 300 to 350 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211336460.2A CN115556399A (en) | 2022-10-28 | 2022-10-28 | Injection molding preparation process of environment-friendly student desk and stool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211336460.2A CN115556399A (en) | 2022-10-28 | 2022-10-28 | Injection molding preparation process of environment-friendly student desk and stool |
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| CN115556399A true CN115556399A (en) | 2023-01-03 |
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| CN202211336460.2A Pending CN115556399A (en) | 2022-10-28 | 2022-10-28 | Injection molding preparation process of environment-friendly student desk and stool |
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| CN (1) | CN115556399A (en) |
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- 2022-10-28 CN CN202211336460.2A patent/CN115556399A/en active Pending
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