CN114670423A - Positioning molding plastic suction process - Google Patents
Positioning molding plastic suction process Download PDFInfo
- Publication number
- CN114670423A CN114670423A CN202210301894.2A CN202210301894A CN114670423A CN 114670423 A CN114670423 A CN 114670423A CN 202210301894 A CN202210301894 A CN 202210301894A CN 114670423 A CN114670423 A CN 114670423A
- Authority
- CN
- China
- Prior art keywords
- plastic
- molded
- plastic suction
- heating
- molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 91
- 239000004033 plastic Substances 0.000 title claims abstract description 88
- 238000000465 moulding Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000007493 shaping process Methods 0.000 claims description 34
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- -1 polyoxymethylene Polymers 0.000 claims description 8
- 238000010137 moulding (plastic) Methods 0.000 claims description 7
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 4
- 239000011118 polyvinyl acetate Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 239000002991 molded plastic Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/264—Auxiliary operations prior to the thermoforming operation, e.g. cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses a positioning molding plastic suction process, which has the technical scheme that: the positioning molding plastic suction process comprises the following steps: s1, according to the shape of the molded product, making the position needing to be molded protrude by 2mm, heating the position needing to be molded in the contact heating process, partially heating the unformed area, and heating by adopting a hot plate for contact heating; s2, drawing the material to be molded into a molding die by using a drawing device; and S3, positioning the material when the material is sent to a forming die, and then carrying out plastic suction forming. The plastic uptake product formed by the positioning forming plastic uptake process has high precision, and because the position needing to be formed protrudes by 2mm when the plastic uptake product is formed, the position needing to be formed is heated in the contact heating process, and the region part not formed is heated, so that the region thickness of the forming material at the forming part is more uniform during plastic uptake production, the forming material is more tightly attached to a mold, and the quality after forming is improved.
Description
Technical Field
The invention relates to the field of plastic uptake, in particular to a positioning molding plastic uptake process.
Background
The prior Chinese patent with publication number CN110920032B discloses a plastic suction molding process, which comprises the following steps: step one, processing a mould; taking materials and spraying glue; step three, heating and softening; step four, pressing and forming plastics; step five, cooling and forming; and step six, cutting and cleaning.
The above-mentioned process solves the problem of air leakage, but the above-mentioned blister forming process has some disadvantages, such as: after plastic molding, the precision is often insufficient due to material deformation.
Disclosure of Invention
Aiming at the problems mentioned in the background technology, the invention aims to provide a positioning and forming plastic suction process to solve the problems mentioned in the background technology.
The technical purpose of the invention is realized by the following technical scheme:
a positioning molding plastic suction process comprises the following steps:
s1, according to the shape of the molded product, making the position needing to be molded protrude by 2mm, heating the position needing to be molded in the contact heating process, partially heating the unformed area, and heating by adopting a hot plate for contact heating;
s2, drawing the material to be molded into a molding die by using a drawing device;
and S3, positioning the material when the material is sent to a forming die, and then carrying out plastic suction forming.
Preferably, the material to be molded is polyvinyl acetate, polyoxymethylene, polystyrene, polypropylene or polyvinyl chloride.
Preferably, in S1, when the heating plate is used for contact heating, a PTC heater is installed in the heating plate, and the PTC heater is electrically connected to a temperature controller.
Preferably, when the plastic suction molding in S3 is performed, a vacuum negative pressure plastic suction machine or a positive pressure plastic suction machine is used, and when the vacuum negative pressure plastic suction machine is used, the material to be molded is attached to the mold in a negative pressure vacuumizing manner; when a positive pressure plastic sucking machine is adopted, air is added to the front surface of the material to be molded through an air compressor, so that the softened material sheet to be molded is attached to the mold.
Preferably, after the S3 blister molding, the cutting machine is used to cut off the margin around the molded blister product.
Preferably, when the S3 plastic suction molding is performed, the side surface of the plastic suction mold is inclined, and the demolding inclination is 2 to 4 °.
Preferably, S3 plastic uptake shaping back, detects the plastic uptake product, and the detection project includes: whether the plastic suction is not in place or excessive or not, whether the stay wire is generated or not and whether the thickness is uneven or not.
Preferably, when the S3 plastic suction molding is performed, the mold is cooled by a cooling device before demolding, and the temperature of the cooling water is controlled to be 10-15 ℃.
In summary, the invention mainly has the following beneficial effects:
the plastic uptake product after this location shaping blister technology shaping precision is high, because when carrying out the shaping, can be according to the row of shaping product and touch the shape, let the outstanding 2mm in position that needs the shaping, in contact heating process, make the position that needs the shaping heat, at the regional part heating of not shaping, adopt hot plate contact heating during the heating, can make the regional thickness of shaping material in shaping department more even when the plastic uptake production, it is inseparabler with the laminating of mould, improve the quality after the shaping.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A positioning molding plastic suction process comprises the following steps:
s1, according to the shape of the molded product, making the position needing to be molded protrude by 2mm, heating the position needing to be molded in the contact heating process, partially heating the unformed area, and heating by adopting a hot plate for contact heating;
s2, drawing the material to be molded into a molding die by using a drawing device;
and S3, positioning the material when the material is sent to a forming die, and then carrying out plastic suction forming.
Wherein the material to be molded is polyvinyl acetate, polyoxymethylene, polystyrene, polypropylene or polyvinyl chloride.
In S1, when the heating plate is used for contact heating, a PTC heater is mounted on the heating plate, and the PTC heater is electrically connected to a temperature controller.
When the vacuum forming in the step S3 is performed, a vacuum negative pressure plastic-absorbing machine or a positive pressure plastic-absorbing machine is used, and when the vacuum negative pressure plastic-absorbing machine is used, the material to be formed is attached to the mold in a negative pressure vacuumizing manner; when a positive pressure plastic sucking machine is adopted, air is added to the front surface of the material to be molded through an air compressor, so that the softened material sheet to be molded is attached to the mold.
And after the S3 plastic suction molding, cutting off the margin of the periphery of the molded plastic suction product by using a cutting machine.
And when S3 plastic suction molding is carried out, the side face of the plastic suction mold is inclined, and the demolding inclination is 2-4 degrees.
Wherein, S3 plastic uptake shaping back detects to moulding plastics product, and the detection project includes: whether the plastic suction is not in place or excessive or not, whether the stay wire is generated or not and whether the thickness is uneven or not.
When the S3 plastic suction molding is carried out, the mold is cooled by a cooling device before demolding, and the temperature of cooling water is controlled to be 10 ℃.
Wherein, the plastic uptake goods precision after this location shaping blister process shaping is high, because when carrying out the shaping, can be according to the row of shaping product and touch the shape, let the outstanding 2mm in position that needs the shaping, in contact heating process, make the position heating that needs the shaping, at the regional part heating of not shaping, adopt hot plate contact heating during the heating, can make the regional thickness of shaping material in shaping department more even when the plastic uptake production, it is inseparabler with the laminating of mould, improve the quality after the shaping.
Example 2
A positioning molding plastic suction process comprises the following steps:
s1, according to the shape of the molded product, making the position needing to be molded protrude by 2mm, heating the position needing to be molded in the contact heating process, partially heating the unformed area, and heating by adopting a hot plate for contact heating;
s2, drawing the material to be molded into a molding die by using a drawing device;
and S3, positioning the material when the material is sent to a forming die, and then carrying out plastic suction forming.
Wherein the material to be molded is polyvinyl acetate, polyoxymethylene, polystyrene, polypropylene or polyvinyl chloride.
In S1, when the heating plate is heated by contact, the heating plate is provided with a PTC heater electrically connected to a temperature controller.
When the vacuum forming in the step S3 is performed, a vacuum negative pressure plastic-absorbing machine or a positive pressure plastic-absorbing machine is used, and when the vacuum negative pressure plastic-absorbing machine is used, the material to be formed is attached to the mold in a negative pressure vacuumizing manner; when a positive pressure plastic sucking machine is adopted, air is added to the front surface of a material to be molded through an air compressor, and the softened material sheet to be molded is attached to a mold.
And after the S3 plastic suction molding, cutting off the margin of the periphery of the molded plastic suction product by using a cutting machine.
And when S3 plastic suction molding is carried out, the side face of the plastic suction mold is inclined, and the demolding inclination is 2-4 degrees.
Wherein, after S3 plastic uptake shaping, detect the plastic uptake product, the detection item includes: whether the plastic uptake is not in place, whether the plastic uptake is excessive, whether the stay wire is generated and whether the thickness is uneven or not.
When the S3 plastic suction molding is carried out, the mold is cooled by a cooling device before demolding, and the temperature of cooling water is controlled to be 15 ℃.
Wherein, the plastic uptake goods precision after this location shaping blister process shaping is high, because when carrying out the shaping, can be according to the row of shaping product and touch the shape, let the outstanding 2mm in position that needs the shaping, in contact heating process, make the position heating that needs the shaping, at the regional part heating of not shaping, adopt hot plate contact heating during the heating, can make the regional thickness of shaping material in shaping department more even when the plastic uptake production, it is inseparabler with the laminating of mould, improve the quality after the shaping.
Wherein, the process also comprises the following steps of manufacturing and processing a mould;
softening the mould after the mould is completely treated and dried;
placing the softened plastic sheet and the wood cabinet in a vacuum chamber, starting an air suction switch, completely sucking air in the vacuum chamber, and cooling the plastic sheet to obtain a concave package or a process mold which is the same as the mold; and (3) cell shell: the transparent plastic hard sheet is made into transparent plastic with a specific convex shape by adopting a plastic suction process, and the transparent plastic is covered on the surface of a product to play a role in protecting and beautifying the product. Also named as bubble cap, vacuum cap; a tray: the plastic inner support is also called as a plastic inner support, a plastic hard sheet is made into plastic with a specific groove by adopting a plastic suction process, and a product is placed in the groove to play a role in protecting and beautifying the product; flocking and internal supporting: the plastic suction tray is made of special materials, and a layer of velvet material is adhered to the surface of a common plastic hard sheet, so that the surface of the tray has a velvet hand feeling and the packaging product grade is improved; antistatic tray: is a plastic uptake tray made of special material, and the surface resistance value of the material is less than 11 square ohms of 10. The plastic tray is mainly used for electronic and IT products; plastic suction molding: the mould for plastic suction production has the lowest cost of a plaster mould, the second is an electroplating copper mould and the most expensive is an aluminum mould. The mould is adhered with small holes and used for vacuum adsorption of the heated hard sheet to form a blister product.
Plastic suction molding: in the plastic suction, a plastic suction forming machine is adopted to adsorb plastic hard sheets softened by heating on the surface of a mold, and after cooling, concave-convex plastic is formed; plastic uptake and cutting: after plastic sucking molding, the plastic products are cut into single products by a cutter die through a punch press.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A positioning molding plastic suction process is characterized in that: the method comprises the following steps:
s1, according to the shape of the molded product, making the position needing to be molded protrude by 2mm, heating the position needing to be molded in the contact heating process, partially heating the unformed area, and heating by adopting a hot plate for contact heating;
s2, drawing the material to be molded into a molding die by using a drawing device;
and S3, positioning the material when the material is sent to a forming die, and then carrying out plastic suction forming.
2. The plastic molding process according to claim 1, wherein: the material to be molded is polyvinyl acetate, polyoxymethylene, polystyrene, polypropylene or polyvinyl chloride.
3. The positional forming blister process according to claim 1, wherein: in S1, when the heating plate is used for contact heating, a PTC heater is mounted in the heating plate, and the PTC heater is electrically connected to a temperature controller.
4. The plastic molding process according to claim 1, wherein: when the plastic suction molding in the step S3 is performed, a vacuum negative pressure plastic suction machine or a positive pressure plastic suction machine is adopted, and when the vacuum negative pressure plastic suction machine is adopted, the material to be molded is attached to the mold in a negative pressure vacuumizing mode; when a positive pressure plastic sucking machine is adopted, air is added to the front surface of the material to be molded through an air compressor, so that the softened material sheet to be molded is attached to the mold.
5. The plastic molding process according to claim 1, wherein: and after S3 plastic suction molding, cutting off the margin of the periphery of the molded plastic suction product by using a cutting machine.
6. The plastic molding process according to claim 1, wherein: when S3 plastic suction molding is carried out, the side face of the plastic suction mold is inclined, and the demolding inclination is 2-4 degrees.
7. The plastic molding process according to claim 1, wherein: s3 plastic uptake shaping back detects the product of moulding plastics, and the detection project includes: whether the plastic suction is not in place or excessive or not, whether the stay wire is generated or not and whether the thickness is uneven or not.
8. The plastic molding process according to claim 1, wherein: when S3 plastic suction molding is carried out, a cooling device is used for cooling the mold before demolding, and the temperature of cooling water is controlled to be 10-15 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210301894.2A CN114670423A (en) | 2022-03-25 | 2022-03-25 | Positioning molding plastic suction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210301894.2A CN114670423A (en) | 2022-03-25 | 2022-03-25 | Positioning molding plastic suction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114670423A true CN114670423A (en) | 2022-06-28 |
Family
ID=82076465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210301894.2A Pending CN114670423A (en) | 2022-03-25 | 2022-03-25 | Positioning molding plastic suction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114670423A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228050A (en) * | 2014-10-16 | 2014-12-24 | 雷宗好 | Plastic sucking molding method of flowerpots |
-
2022
- 2022-03-25 CN CN202210301894.2A patent/CN114670423A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228050A (en) * | 2014-10-16 | 2014-12-24 | 雷宗好 | Plastic sucking molding method of flowerpots |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114670423A (en) | Positioning molding plastic suction process | |
| JPS5898218A (en) | Heat forming method of film | |
| CN207330729U (en) | Model solid glass mold | |
| CN207044672U (en) | A kind of processing unit (plant) for printing three layers of composite plastic sheet thermoformed articles | |
| JPH03199030A (en) | Method and apparatus for thermoforming thermoplastic resin sheet | |
| CN206765349U (en) | A kind of plastic uptake equipment | |
| TWI641565B (en) | Molded three-dimensional glass mold and mold forming method | |
| CN216445243U (en) | Hot-press forming device for outer ring of heat-resistant glass plate | |
| CN215320172U (en) | A high tensile foil membrane softens and detects structure for in-mould injection moulding decorative mold | |
| CN211165289U (en) | Forming die of plastic uptake box | |
| CN113927820A (en) | A high tensile foil membrane softens and detects structure for in-mould injection moulding decorative mold | |
| CN210590532U (en) | Mould and hold in palm forming die | |
| JPS5941060Y2 (en) | Contact type face plate thermoforming machine | |
| JPS6331732A (en) | Thermoforming of vessel and the like | |
| EP0271078A2 (en) | Thermoforming method and apparatus for thermoplastic resin sheet | |
| CN105538591A (en) | Diaphragm hot pressing method used on surface of plastic product | |
| CN211279718U (en) | Plastic sucking plate production mold | |
| CN109514874A (en) | A kind of 3D colour toilet lid and processing method | |
| CN213006410U (en) | Accurate double-colored integrative thermoplastic forming die fixes a position | |
| CN106514994A (en) | Forming method for cloth-plastic composite shell | |
| CN105365204A (en) | Method for processing thermally formed product from printed three-layer composite plastic sheet | |
| CN115946333A (en) | Novel polymer bridge accessory processing method | |
| CN216732967U (en) | Mould capable of preventing food plastic uptake box from deforming | |
| JPH079547A (en) | Heat resistant vessel formed of polyethylene terephthalate sheet and production thereof | |
| JPH05104572A (en) | Manufacture of multilayer plastic vessel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220628 |