CN116533486A - Co-extrusion molding process for metal and plastic - Google Patents
Co-extrusion molding process for metal and plastic Download PDFInfo
- Publication number
- CN116533486A CN116533486A CN202310233165.2A CN202310233165A CN116533486A CN 116533486 A CN116533486 A CN 116533486A CN 202310233165 A CN202310233165 A CN 202310233165A CN 116533486 A CN116533486 A CN 116533486A
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- China
- Prior art keywords
- metal
- extrusion
- coiled sheet
- plastic
- auxiliary
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 85
- 239000002184 metal Substances 0.000 title claims abstract description 85
- 238000001125 extrusion Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 40
- 229920003023 plastic Polymers 0.000 title claims abstract description 35
- 239000004033 plastic Substances 0.000 title claims abstract description 35
- 238000005096 rolling process Methods 0.000 claims abstract description 18
- 230000000536 complexating effect Effects 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000004553 extrusion of metal Methods 0.000 claims description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 6
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000010668 complexation reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 11
- 239000000155 melt Substances 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92847—Inserts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of coextrusion, and discloses a coextrusion molding process of metal and plastic, wherein rolling speed and traction speed are controlled to be consistent through a tension controller, so that fluctuation of the size and shape of molded metal sections caused by asynchronous movement of the two is avoided, and the subsequent coextrusion difficulty is avoided; the process is characterized in that auxiliary extrusion is introduced, a film with the thickness of 0.1-0.2mm is formed on the metal surface of a product, a runner of the auxiliary extrusion is opposite to a runner of main extrusion, the auxiliary extrusion is used for keeping melt balance with the extrusion of the main runner in the co-extrusion process, the auxiliary extrusion is used for preventing the melt of the main runner from overflowing to the metal surface to cause product defects, and meanwhile, the outer surface of a metal section can be separated from an extrusion die in the extrusion process, so that the outer surface of the metal section is not scratched by the die; the film which is extruded in an auxiliary way can be attached to a product to be used as a protective film, so that the defects of surface scratch and the like caused by the later processing, storage and transportation processes and the like are avoided.
Description
Technical Field
The invention relates to the technical field of coextrusion, in particular to a coextrusion molding process of metal and plastic.
Background
In the process of co-extrusion molding of metal and plastic, the rolling speed is consistent with the traction speed, so that the problem that the size and the shape of the molded metal section are fluctuated due to the fact that the two are asynchronous, the subsequent co-extrusion is difficult is avoided, the melt of the main runner overflows to the metal surface to cause product defects, meanwhile, the outer surface of the metal section can be difficultly separated from an extrusion die in the extrusion process, and the outer surface of the metal section is scratched by the die; the defects of surface scratch and the like are easy to occur in the processes of later processing, storage and transportation of products and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a co-extrusion molding process of metal and plastic, which solves the problems.
The invention provides the following technical scheme: a metal and plastic co-extrusion molding process comprises a metal coiled sheet, a rolling line, a tension controller, a main extruder, an auxiliary extruder, a co-extrusion die, a shaping table, a tractor and an automatic cutting machine, and comprises the following steps:
s1, after a metal coiled sheet is formed by rolling and binding wires, the metal coiled sheet is pulled by a tractor and enters a co-extrusion die;
s2, extruding corresponding plastics into a die through respective runners through a main extruder and an auxiliary extruder to form corresponding shapes, and then shaping through a shaping table and then drawing out by a tractor;
s3, cutting the metal coil sheet into defined lengths through an automatic cutting machine.
Preferably, in said step S1, said tension controller controls the speed of the wire rolling in synchronism with the speed of the following tractor.
Preferably, in the step S2, the flow channel of the main extruder is opposite to the flow channel of the auxiliary extruder.
Preferably, in the step S2, the plastic extruded by the auxiliary extruder forms a film with a thickness of 0.1-0.2mm on the outer surface of the metal coiled sheet.
Preferably, the upper end and the lower end of the outlet of the co-extrusion die are respectively provided with a sensing device, the sensing devices are used for detecting the pulled-out speed of the metal coiled sheet, and the sensing devices are electrically connected with the traction mechanism.
Preferably, the metal coil sheet is wound before being rolled into a wire.
Preferably, the complexing treatment comprises the following steps:
a, preparing a complexing solution: the complexing solution is formed by mixing butanone and cyclohexanone according to the mass ratio of 2-3:1;
b, soaking the metal coiled sheet in the complexing solution for 1-3h;
and C, taking out the soaked metal coil sheet, cleaning and drying.
Compared with the prior art, the invention provides a co-extrusion molding process of metal and plastic, which has the following beneficial effects:
(1) The co-extrusion molding process of the metal and the plastic controls the rolling speed to be consistent with the traction speed through the tension controller, so that the fluctuation of the size and the shape of the molded metal section bar caused by the asynchronous movement of the rolling speed and the traction speed is avoided, and the subsequent co-extrusion difficulty is avoided; the process is characterized in that auxiliary extrusion is introduced, a film with the thickness of 0.1-0.2mm is formed on the metal surface of a product, a runner of the auxiliary extrusion is opposite to a runner of main extrusion, the auxiliary extrusion is used for keeping melt balance with the extrusion of the main runner in the co-extrusion process, the auxiliary extrusion is used for preventing the melt of the main runner from overflowing to the metal surface to cause product defects, and meanwhile, the outer surface of a metal section can be separated from an extrusion die in the extrusion process, so that the outer surface of the metal section is not scratched by the die; the film which is extruded in an auxiliary way can be attached to a product to be used as a protective film, so that the defects of surface scratch and the like caused by the later processing, storage and transportation processes and the like are avoided.
(2) According to the co-extrusion molding process of the metal and the plastic, the plastic can be more stably and reliably attached to the outer surface of a product through the complexation treatment of the metal coiled sheet, so that the integrity of the metal coiled sheet produced by the method is improved.
Drawings
FIG. 1 is a schematic view of a metal coil sheet structure according to the present invention;
FIG. 2 is a schematic diagram of the relative configuration of the primary and secondary extruder runners of the present invention;
FIG. 3 is a schematic diagram of the structure of the product of the present invention after co-extrusion of metal and plastic.
In the figure: 1. rolling and binding the wire; 2. a tension controller; 3. a main extruder; 4. an auxiliary extruder; 5. a co-extrusion die; 6. a shaping table; 7. a traction machine; 8. an automatic cutting machine; 9. a metal coil sheet; 10. a film.
Detailed Description
Referring to fig. 1-3, a metal and plastic co-extrusion process includes a metal coil sheet 9, a rolling line 1, a tension controller 2, a main extruder 3, an auxiliary extruder 4, a co-extrusion die 5, a shaping table 6, a tractor 7 and an automatic cutter 8, and includes the following steps:
s1, after the metal coiled sheet 9 is processed and formed by a rolling wire 1, the metal coiled sheet is pulled by a tractor 7 and enters a co-extrusion die 5;
s2, extruding corresponding plastics into a die through respective runners through a main extruder 3 and an auxiliary extruder 4 to form corresponding shapes, and then shaping through a shaping table 6 and then pulling out by a tractor 7;
and S3, cutting the metal coil sheet 9 into defined lengths by an automatic cutter 8.
In this embodiment, in the step S1, the tension controller 2 controls the rolling speed of the rolling line 1 to be synchronous with the speed of the rear tractor 7, so as to avoid the fluctuation of the size and shape of the formed metal profile caused by the asynchronous movement of the rolling line 1 and the rear tractor 7, and the difficulty in the rear coextrusion.
In this embodiment, in step S2, the flow channels of the main extruder 3 and the auxiliary extruder 4 are opposite, and in the co-extrusion process, the flow channels are in balance with the main flow channel, so that the melt in the main flow channel is prevented from overflowing to the metal surface to cause product defects, and meanwhile, the outer surface of the metal profile can be separated from the extrusion die in the extrusion process, so that the outer surface of the metal profile is prevented from being scratched by the die.
In this embodiment, in step S2, the plastic extruded by the auxiliary extruder 4 forms a film 10 with a thickness of 0.1-0.2mm on the outer surface of the metal coiled sheet, and the film can be attached to a product to be used as a protective film, so that defects such as surface scratches caused by later processing, storage and transportation processes and the like are avoided.
In this embodiment, the upper and lower ends of the outlet of the co-extrusion die 5 are respectively provided with an induction device, the induction device is used for detecting the pulled-out speed of the metal coil sheet 9, and the induction device is electrically connected with the traction mechanism.
The sensing device is used for detecting whether the metal coiled sheet 1 is pulled out by the tractor 7 at the outlet of the co-extrusion die 5; the sensing means is also used to control the rate at which the retractor 7 pulls out the rolled sheet metal 1 in accordance with the rate at which the rolled sheet metal 1 is pulled out. The sensing device preferably adopts an infrared transceiver.
The invention is used for controlling the thickness of a metal coiled sheet 1 through the arrangement of an infrared transceiver, and specifically comprises the following steps: when the speed of the tractor 7 for pulling out the metal coiled sheet 1 is low, namely the sensing device can recognize that the pulled speed of the metal coiled sheet 1 is lower than a set lower threshold value, and at the moment, the sensing device can send a control signal to control the tractor 7 to accelerate the speed of pulling out the metal coiled sheet 1; similarly, when the rate at which the rolled sheet 1 is pulled out is high, the sensing means controls the tractor 7 to reduce the rate at which the rolled sheet 1 is pulled out. The notification sensing means regulate the speed of the tractor 7, thereby ensuring that the thickness of the drawn metal coil sheet remains unchanged within the error range.
Of course, the sensing device can control the action of the tractor 7 according to the pulling rate of the metal coiled sheet 1, and can control the action of the tractor 7 according to the thickness of the metal coiled sheet 1, so that when the extrusion efficiency of plastic changes, the thickness of the metal coiled sheet 1 can reach the standard by changing the pulling rate, specifically: when the thickness of the plastic is too thick, that is, the infrared transceiver tests that the distance between the metal coiled sheet 1 and the infrared transceiver is smaller than the preset lower threshold, the infrared transceiver sends a signal to the tractor 7 to control the tractor 7 to increase the traction speed; similarly, when the rolled metal sheet 1 is too thin, the infrared transceiver device tests that the distance between the rolled metal sheet 1 and the infrared transceiver device is greater than the preset upper threshold, so that the infrared transceiver device sends a signal to the tractor 7 to control the tractor 7 to reduce the traction rate. The speed of the tractor 7 is controlled through the infrared transceiver, so that the amount of the components of the aluminum co-extrusion plastic of the unit length in the co-extrusion die of the first extruder 3 is changed, the thickness of the plastic on the aluminum is regulated and controlled, and the effect of controlling the thickness of the metal coil sheet 1 to keep dynamic balance in a certain range is achieved.
In this embodiment, the rolled metal sheet 9 is wound before being rolled by the wire 1.
In this embodiment, the complexing process includes the following steps:
a, preparing a complexing solution: the complexing solution is formed by mixing butanone and cyclohexanone according to the mass ratio of 2-3:1;
b, putting the metal coiled sheet 9 into a complexing solution for soaking for 1-3h;
and C, taking out the soaked metal coiled sheet 9, cleaning and drying.
Therefore, the plastic can be more stably and reliably attached to the outer surface of the aluminum material, and the integrity of the aluminum-plastic plate produced by the invention is improved.
In summary, the metal and plastic co-extrusion molding process is characterized in that the tension controller controls the rolling speed to be consistent with the traction speed, so that the fluctuation of the size and shape of the molded metal section bar caused by the asynchronous movement of the tension controller and the traction speed is avoided, and the subsequent co-extrusion difficulty is avoided; the process is characterized in that auxiliary extrusion is introduced, a film with the thickness of 0.1-0.2mm is formed on the metal surface of a product, a runner of the auxiliary extrusion is opposite to a runner of main extrusion, the auxiliary extrusion is used for keeping melt balance with the extrusion of the main runner in the co-extrusion process, the auxiliary extrusion is used for preventing the melt of the main runner from overflowing to the metal surface to cause product defects, and meanwhile, the outer surface of a metal section can be separated from an extrusion die in the extrusion process, so that the outer surface of the metal section is not scratched by the die; the film which is extruded in an auxiliary way can be attached to a product to be used as a protective film, so that the defects of surface scratch and the like caused by the later processing, storage and transportation processes and the like are avoided.
According to the co-extrusion molding process of the metal and the plastic, the plastic can be more stably and reliably attached to the outer surface of a product through the complexation treatment of the metal coiled sheet, so that the integrity of the metal coiled sheet produced by the method is improved.
Claims (7)
1. The co-extrusion molding process of metal and plastic comprises a metal coiled sheet (9), a rolling line (1), a tension controller (2), a main extruder (3), an auxiliary extruder (4), a co-extrusion die (5), a shaping table (6), a tractor (7) and an automatic cutter (8), and is characterized by comprising the following steps:
s1, after a metal coiled sheet (9) is processed and formed by a rolling wire (1), the metal coiled sheet is pulled by a tractor (7) and enters a co-extrusion die (5);
s2, extruding corresponding plastics into a mold through respective runners through a main extruder (3) and an auxiliary extruder (4) to form corresponding shapes, and then shaping through a shaping table (6) and then pulling out by a tractor (7);
s3, cutting the metal coiled sheet (9) into defined lengths by an automatic cutting machine (8).
2. A process for co-extrusion of metal and plastic according to claim 1, wherein: in step S1, the tension controller (2) controls the speed of rolling of the wire (1) to be synchronized with the speed of the following tractor (7).
3. A process for co-extrusion of metal and plastic according to claim 1, wherein: in the step S2, the flow channel of the main extruder (3) is opposite to the flow channel of the auxiliary extruder (4).
4. A process for co-extrusion of metal and plastic according to claim 1, wherein: in the step S2, the plastic extruded by the auxiliary extruder (4) forms a film (10) with the thickness of 0.1-0.2mm on the outer surface of the metal coiled sheet.
5. A process for co-extrusion of metal and plastic according to claim 1, wherein: the upper end and the lower end of the outlet of the co-extrusion die (5) are respectively provided with an induction device, the induction devices are used for detecting the pulled-out speed of the metal coiled sheet (9), and the induction devices are electrically connected with the traction mechanism.
6. A process for co-extrusion of metal and plastic according to claim 1, wherein: the metal coiled sheet (9) is subjected to a texturing treatment before being rolled by the rolling wire (1).
7. A process for co-extrusion of metal and plastic according to claim 6, wherein: the complexation treatment comprises the following steps:
a, preparing a complexing solution: the complexing solution is formed by mixing butanone and cyclohexanone according to the mass ratio of 2-3:1;
b, soaking the metal coiled sheet (9) in the complexing solution for 1-3h;
and C, taking out the soaked metal coiled sheet (9), cleaning and drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310233165.2A CN116533486A (en) | 2023-03-13 | 2023-03-13 | Co-extrusion molding process for metal and plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310233165.2A CN116533486A (en) | 2023-03-13 | 2023-03-13 | Co-extrusion molding process for metal and plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116533486A true CN116533486A (en) | 2023-08-04 |
Family
ID=87449477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310233165.2A Pending CN116533486A (en) | 2023-03-13 | 2023-03-13 | Co-extrusion molding process for metal and plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116533486A (en) |
-
2023
- 2023-03-13 CN CN202310233165.2A patent/CN116533486A/en active Pending
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