CN111016221A - Chain plate type thermoplastic plate equipment and long fiber thermoplastic plate preparation method - Google Patents
Chain plate type thermoplastic plate equipment and long fiber thermoplastic plate preparation method Download PDFInfo
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- CN111016221A CN111016221A CN201910787579.3A CN201910787579A CN111016221A CN 111016221 A CN111016221 A CN 111016221A CN 201910787579 A CN201910787579 A CN 201910787579A CN 111016221 A CN111016221 A CN 111016221A
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
- B29C70/506—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands and impregnating by melting a solid material, e.g. sheet, powder, fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
Abstract
The invention relates to a chain plate type thermoplastic plate device and a long fiber thermoplastic plate preparation method, wherein the chain plate type thermoplastic plate device comprises two groups of chain plate driving assemblies, one group of chain plate driving assemblies is positioned at the upper part, and the bottom of a chain plate body of the chain plate driving assemblies is provided with a horizontally distributed upper pressing surface; the other group of chain plate driving components are positioned at the lower part, and the top of the chain plate body is provided with a lower pressing surface which is horizontally distributed; a channel gap for conveying the plates is formed between the upper pressing surface and the lower pressing surface; during preparation, the fiber mixture of the extruder is directly fed into a chain plate type thermoplastic plate device to obtain a plate; the invention has reasonable structural design, can continuously produce long fiber thermoplastic plates by chain plate type thermoplastic plate equipment, has high production efficiency, greatly reduces the equipment investment, and can complete the matched production of plate products by only a small press and a heating device.
Description
Technical Field
The invention relates to the technical field of composite materials and processing equipment thereof, in particular to chain plate type thermoplastic plate equipment and a long fiber thermoplastic plate preparation method.
Background
A thermoplastic fiber reinforced plate belongs to an interlayer hybrid composite material formed under certain temperature and pressure. The strength, modulus, impact toughness, heat resistance and creep resistance of the material are all obviously superior to those of short fiber reinforced thermoplastic composite materials, except impact strength, the other properties are equivalent to those of glass fiber felt reinforced thermoplastic composite materials, through combination with continuous fiber fabrics, long fiber reinforced thermoplastic materials (LFT) can completely exceed glass fiber thermoplastic prepregs (GMT) in mechanical properties, the forming and processing properties of the long fiber reinforced thermoplastic materials are superior to those of the glass fiber thermoplastic prepregs (GMT), the long fiber reinforced thermoplastic materials have good mold filling capability, products can be formed through a mold pressing process, very complex components can be formed, and the long fiber reinforced thermoplastic materials can replace some metal materials, thermosetting SMC composite materials, Bulk Molding Compounds (BMC) and a series of engineering plastics and can be applied to the industries of automobile and other vehicle manufacturing, building, packaging household appliances, chemical engineering, breeding and the like.
However, the real LFT process equipment is high in introduction cost and cannot meet the market demand, and the traditional domestic composite material processing equipment has the problem of discontinuous processing, so that the production efficiency is low.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a chain plate type thermoplastic plate device and a long fiber thermoplastic plate preparation method, which are used for realizing low-cost and high-efficiency production of thermoplastic plates.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a flight thermoplastic panel apparatus, comprising:
the chain plate driving assemblies comprise an equipment bracket and a plurality of carrier rollers arranged on the equipment bracket, and chain plate bodies connected with the carrier rollers are arranged on the outer sides of the carrier rollers;
one group of chain plate driving components are positioned at the upper part, and the bottom of the chain plate body is provided with an upper pressing surface which is horizontally distributed; the other group of chain plate driving components are positioned at the lower part, and the top of the chain plate body is provided with a lower pressing surface which is horizontally distributed;
and a channel gap for conveying the plates is formed between the upper pressing surface and the lower pressing surface, the top surface of the upper pressing surface and the bottom surface of the lower pressing surface are respectively provided with the carrier roller, and the upper pressing surface and the lower pressing surface are pressed by the carrier rollers to convey the plates in the same direction.
The carrier roller includes drive roller and eccentric kneading roller, and the drive roller is equipped with at least two sets ofly, eccentric kneading roller sets up between adjacent drive roller, and eccentric kneading roller can constitute to the inside bellied portion of extrudeing of passageway clearance through rotating at last pressfitting face or lower pressfitting face surface.
Two sets of tensioning respectively that lie in both ends in the drive roller the inner wall setting of link joint body drives through the drive roller the link joint body rotates in step.
The driving roller adopts a heating roller structure.
The inside heating passageway that is used for the heating medium circulation that is equipped with of drive roller, the length direction of heating passageway distributes and is close to the drive roller surface setting along the axial of drive roller, and the drive roller both ends are equipped with heating import and heating export respectively, and heating import and heating export respectively with the heating passageway intercommunication.
The telescopic adjusting mechanism is installed and fixed on the equipment support of one group of chain plate driving assemblies, and the telescopic end of the telescopic adjusting mechanism is connected with the equipment support of the other group of telescopic adjusting mechanism.
The telescopic adjusting mechanism comprises a screw rod and a fixing block, the screw rod penetrates through the fixing block and is in threaded connection with the fixing block, the fixing block is installed on one group of chain plate driving assemblies, and one end of the screw rod serves as the telescopic end and is connected with the other group of chain plate driving assemblies.
The chain plate kneading machine is characterized by further comprising a driving motor, wherein the driving motor is fixedly arranged on an equipment support of one group of chain plate driving assemblies, the output end of the driving motor is in transmission connection with any one group of driving rollers of the two groups of chain plate driving assemblies respectively, and the driving rollers of the same group of chain plate driving assemblies are in transmission connection with the eccentric kneading rollers.
A method for preparing a long fiber thermoplastic sheet is characterized by comprising the following steps:
the fiber mixture is fed into a feed inlet of a channel gap of chain plate type thermoplastic plate equipment, and the fiber mixture is subjected to hot-pressing compounding by two groups of chain plate driving assemblies to obtain a preprocessed fiber laminate, wherein the process conditions comprise:
the hot pressing temperature is 200-220 ℃;
the hot-pressing contact time is 30-60 s;
the rolling pressure is 16-20 MPa;
the height of the channel gap is smaller than the thickness value of the preprocessed fiber laminate by 0.1-0.5 mm.
The fiber mixture is obtained by feeding matrix resin or a mixture of long fibers and the matrix resin into an extruder and carrying out melt extrusion.
The fiber mixture also comprises fiber yarns positioned on the two side surfaces of the fiber mixture.
The matrix resin is any one of polypropylene and polyethylene or a modified resin corresponding to the polypropylene and the polyethylene.
The long fiber is made of fiber yarn or woven fiber felt, and the fiber material of the long fiber is any one of glass fiber, carbon fiber and plant fiber.
The extruder is a double-screw extruder.
The extruder comprises nine heating zones and a head, and the specific working temperature is as follows:
the temperature of the first zone is 165-175 ℃; the temperature of the second zone is 195-205 ℃; the temperature of the three zones is 200-210 ℃; the temperature of the fourth zone is 205-215 ℃; the temperature of the five zones is 195-205 ℃; the temperature of the sixth zone is 195-205 ℃; the temperature of the seventh zone is 195-minus 205 ℃; the temperature of the eight area is 245-255 ℃; the temperature of the nine areas is 205-215 ℃; the head temperature is 205-215 ℃.
The method also comprises a leveling procedure, wherein the preprocessed fiber laminate is fed into a smooth roll device at a discharge port of a channel gap of the chain plate type thermoplastic plate device, and the smooth roll device is used for leveling the surface of the preprocessed fiber laminate.
The invention has the beneficial effects that: structural design is reasonable, can produce long fiber thermoplasticity panel in succession through chain slat type thermoplasticity panel equipment, and production efficiency is high, and greatly reduced equipment drops into simultaneously, only needs little press and heating apparatus can accomplish the supporting production of panel goods.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a chain plate type thermoplastic plate device.
Fig. 2 is a schematic structural view of the telescopic adjustment mechanism.
Fig. 3 is a schematic view of the structure of the driving roller.
Fig. 4 is a schematic view of the structure of the eccentric kneading roller.
FIG. 5 is a schematic diagram of a long fiber thermoplastic sheet manufacturing system.
In the figure: the device comprises a fiber yarn roller 1, an upper layer driving roller 2, an upper layer eccentric kneading roller 3, an upper layer driven driving roller 4, a telescopic adjusting mechanism 5, an upper layer device bracket 6, a lower layer device bracket 7, a lower layer driving roller 8, a driving motor 9, a transmission chain 10, a lower layer chain plate body 11, a lower layer driven driving roller 12, an upper layer chain plate body 13, a bearing seat 14, a lower layer eccentric kneading roller 15, a tensioning wheel 16, a tensioning adjusting device 17, a yarn feeding supporting roller 18, a heating inlet 19, a heating channel 20, a screw rod 21, a fixed block 22, an extruder 23, a 24 chain plate type thermoplastic plate device and a smooth roller device 25.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Example one
As shown in fig. 1 to 4: the embodiment provides a chain slat type thermoplasticity panel equipment, and it specifically includes:
the two groups of chain plate driving assemblies comprise a first chain plate driving assembly positioned at the upper part and a second chain plate driving assembly positioned at the lower part;
the first chain plate driving assembly comprises an upper layer equipment support 6, two driving rollers which are arranged on the upper layer equipment support 6 and are positioned at the same height and six upper layer eccentric kneading rollers 3 which are positioned at the same height, wherein the upper layer eccentric kneading rollers 3 are positioned between the driving rollers, the driving rollers comprise an upper layer driving roller 2 positioned at the end part of the left side and an upper layer driven driving roller 4 positioned at the end part of the right side, two ends of the upper layer eccentric kneading roller 3, the upper layer driving roller 2 and the upper layer driven driving roller 4 are respectively rotatably arranged on the upper layer equipment support 6 through bearing seats 14, gears connected with the upper layer eccentric kneading rollers 3 and the upper layer driving roller 2 are further arranged at the outer side of the upper layer equipment support 6, an upper layer chain plate body 13 connected with the upper layer driving roller 2 and the upper layer driven driving roller 4 are arranged at the outer side of the upper layer driving roller 2 and the upper layer driven driving roller 4, the, the upper layer driving roller 2 and the upper layer driven driving roller 4 respectively tension the inner wall of the upper layer chain plate body 13, the upper layer driving roller 2 rotates to drive the upper layer chain plate body 13 to synchronously rotate, and the bottom surface of the upper layer chain plate body 13 forms an upper pressing surface which is horizontally distributed;
the second chain plate driving assembly is the same as the first chain plate driving assembly in structure main body, and is only longitudinally and symmetrically distributed at the lower part of the first chain plate driving assembly, the second chain plate driving assembly comprises a lower-layer equipment support 7, two driving rollers which are positioned at the same height and six lower-layer eccentric kneading rollers 15 which are positioned at the same height are arranged on the lower-layer equipment support 7, the lower-layer eccentric kneading rollers 15 are positioned between the driving rollers, the driving rollers comprise a lower-layer driving roller 8 which is positioned at the end part of the left side and a lower-layer driven driving roller 12 which is positioned at the end part of the right side, the two ends of the lower-layer eccentric kneading roller 15, the lower-layer driving roller 8 and the lower-layer driven roller 12 are respectively rotatably arranged on the lower-layer equipment support 7 through bearing seats 14, gears connected with the lower-layer eccentric kneading roller 15 and the lower-layer driving roller 8 are also arranged at the outer, the lower driving roller 8 and the lower driven driving roller 12 are respectively used for tensioning the inner wall of the lower chain plate body 11, the lower driving roller 8 rotates to drive the lower chain plate body 11 to synchronously rotate, and the top surface of the lower chain plate body 11 forms a horizontally distributed lower pressing surface;
further, a driving motor 9 is further mounted on the lower-layer equipment support 7, the driving motor 9 adopts a double-shaft output reducer, an output end of the driving motor 9 is in transmission connection with gears of the upper-layer driving roller 2 and the lower-layer driving roller 8 through chains respectively, a tension pulley 16 is arranged on the outer side of the chain, the tension pulleys 16 are mounted and fixed on the lower-layer equipment support 7 at corresponding positions respectively, the function of matching and adjusting the chain in the process of adjusting the passage gap is met, and the tension effect of the chain is maintained by pressing the chain through the tension pulley 16; the upper layer driving roller 2 and the lower layer driving roller 8 are in transmission connection with gears of eccentric kneading rollers in respective chain plate driving assemblies through chains respectively, so that the first chain plate driving assembly and the second chain plate driving assembly are synchronously controlled by the driving motor 9 to perform synchronous anisotropic driving, and the synchronous conveying effect on the moving direction of the long fiber thermoplastic plate is met;
a channel gap for conveying the plates is formed between the upper pressing surface and the lower pressing surface, the upper pressing surface and the lower pressing surface are respectively pressed by the upper driving roller 2, the upper driven driving roller 4, the lower driving roller 8 and the lower driven driving roller 12 to convey the plates in the same direction, in the conveying process, the upper driven driving roller 4 and the lower eccentric kneading roller 15 can form an extruding part protruding towards the inner part of the channel gap on the surface of the upper pressing surface or the lower pressing surface through rotation, and the two side surfaces of the plates are kneaded by the extruding part, so that the impregnation effect of fibers in the plates and the plate quality are guaranteed;
further, upper initiative drive roller 2 and upper driven drive roller 4, lower floor initiative drive roller 8 and lower floor driven drive roller 12 all adopt the heating roller structure, and the inside heating passageway 20 that is used for the heating medium circulation that is equipped with of drive roller, the length direction of heating passageway 20 distributes along the drive roller axial at its place and is close to the drive roller surface setting, and the drive roller both ends are equipped with heating inlet 19 and heating export respectively, and heating inlet 19 and heating export respectively through radial passageway with heating passageway 20 intercommunication, heating medium gets into heating passageway 20 from heating inlet 19, and leaves from heating export heating passageway 20, keeps the heating state and the heating temperature of drive roller through circulating flow's heating medium.
Further, in order to meet the production of long fiber thermoplastic plates with different thicknesses, two groups of chain plate driving assemblies further comprise four groups of telescopic adjusting mechanisms 5 for adjusting the height of the channel gap, the two groups of chain plate driving assemblies are respectively positioned on the outer sides of the two groups of chain plate driving assemblies and are staggered with the inlet and outlet positions of the channel gap of the long fiber thermoplastic plates, each telescopic adjusting mechanism 5 comprises a screw rod 21 and a fixed block 22, each screw rod 21 penetrates through the corresponding fixed block 22 to be arranged and is in threaded connection with the corresponding fixed block 22, each fixed block 22 is installed on the upper equipment support 6 of the corresponding first chain plate driving assembly, the bottom end of each screw rod 21 serves as a telescopic end and is abutted to the top surface of the lower equipment support 7 of the corresponding second chain plate driving assembly, the height of the channel gap is controlled by rotating the adjusting screw rods 21.
As shown in fig. 5: a long fiber thermoplastic sheet preparation method is mainly based on the application of the chain plate type thermoplastic sheet equipment 24 in the actual production of long fiber thermoplastic sheets, and specifically comprises the following steps:
step 01: preparing a fiber mixture: adding the matrix resin granules into a storage tank according to design performance requirements and a formula proportion, adding the matrix resin granules into an extruder 23 by using a weightlessness type weighing scale for melting, adding long fibers into a feeding section of the extruder 23, and mixing, blending and banburying the long fibers with the matrix resin; the continuous fiber adopts fiber yarn or woven fiber felt cloth, the fiber material of the long fiber adopts any one of glass fiber, carbon fiber and plant fiber, the fiber yarn or woven fiber felt cloth is cut and then placed into an extruder 23, and the matrix resin is any one of polypropylene and polyethylene or corresponding modified resin thereof;
the extruder 23 adopts a double-screw extruder, the fiber mixture is extruded by a machine head of the extruder 23, and a mold opening in the machine head is processed and molded according to the design of the long fiber thermoplastic sheet; the extruder 23 comprises nine heating zones and a head, and the specific working temperature is as follows:
the temperature of the first zone is 170 ℃; the temperature of the second zone is 200 ℃; the temperature of the three zones is 205 ℃; the temperature of the fourth zone is 210 ℃; the temperature of the fifth area is 200 ℃; the temperature of the sixth zone is 200 ℃; the temperature of the seventh zone is 200 ℃; the temperature of the eight regions is 250 ℃; the temperature of the nine areas is 210 ℃; the temperature of the machine head is 210 ℃;
the extruder 23 is widely applied to blending, filling modification, reinforcing modification and extrusion molding of polymers, while the double-screw extruder adopted in the embodiment has good feeding characteristics and a wide application range, and has better mixing, exhausting, reacting and self-cleaning functions compared with a single-screw extruder, and in addition, the double-screw extruder has remarkable advantages in processing plastics and blends with poor thermal stability.
Step 02: mixing: the fiber mixture is fed into a feed inlet of a channel gap of the chain plate type thermoplastic plate device 24, the fiber mixture is dragged under the conveying effect of the chain plate type thermoplastic plate device 24, the fiber mixture is continuously fed into the channel gap of the chain plate type thermoplastic plate device 24, and the fiber mixture is subjected to hot pressing compounding by two groups of chain plate driving assemblies to obtain a preprocessed fiber laminate, wherein the process conditions comprise:
the hot pressing temperature is 200 ℃;
the hot-pressing contact time is 40 s;
the rolling pressure is 20 MPa;
the height of the channel gap is 1.9mm, and the thickness value of the preprocessed fiber laminate is 2 mm;
step 03: leveling: feeding the prefabricated fiber laminate into a smooth roll device 25 at a discharge port of a channel gap of a chain plate type thermoplastic plate device 24, and leveling the surface of the prefabricated fiber laminate by the smooth roll device 25;
step 04: shearing: and cutting the prepared fiber reinforced plate into required specifications by using a cutting mechanism.
Step 05: molding: the plates are put into a workpiece mould according to a certain quantity, and the required workpiece is manufactured through certain pressure and time.
Example two
As shown in fig. 1 to 4: the embodiment provides a chain slat type thermoplastic plate device, which is different from the first embodiment in that:
the front sides of the upper part of the upper-layer equipment bracket 6 of the first chain plate driving assembly and the upper part of the lower-layer equipment bracket 7 of the second chain plate driving assembly are also provided with fiber yarn rollers 1 which are fixedly connected with the upper-layer equipment bracket 6 and the lower-layer equipment bracket 7 and are used for placing yarn rolls of fiber yarns and feeding the fiber yarns into the gap of the channel through the guide rollers.
As shown in fig. 5: the difference between the method for preparing the long fiber thermoplastic sheet and the first embodiment is mainly that the fiber mixture is prepared in step 01, and the specific implementation manner of step 01 is as follows:
step 01: preparing a fiber mixture: adding the matrix resin granules into a storage tank according to design performance requirements and a formula proportion, and adding the matrix resin granules into an extruder 23 by utilizing a weight-loss type weighing scale for melting, wherein the matrix resin is any one of polypropylene and polyethylene or a modified resin corresponding to the polypropylene and the polyethylene;
the extruder 23 adopts a double-screw extruder, matrix resin is extruded by a machine head of the extruder 23, and a mould opening in the machine head is processed and molded according to the design of the long fiber thermoplastic sheet; the extruder 23 comprises nine heating zones and a head, and the specific working temperature is as follows:
the temperature of the first zone is 170 ℃; the temperature of the second zone is 200 ℃; the temperature of the three zones is 205 ℃; the temperature of the fourth zone is 210 ℃; the temperature of the fifth area is 200 ℃; the temperature of the sixth zone is 200 ℃; the temperature of the seventh zone is 200 ℃; the temperature of the eight regions is 250 ℃; the temperature of the nine areas is 210 ℃; the temperature of the machine head is 210 ℃;
the extruder 23 is widely applied to blending, filling modification, reinforcing modification and extrusion molding of polymers, while the double-screw extruder adopted in the embodiment has good feeding characteristics and a wide application range, and has better mixing, exhausting, reacting and self-cleaning functions compared with a single-screw extruder, and in addition, the double-screw extruder has remarkable advantages in processing plastics and blends with poor thermal stability;
simultaneously with the extrusion of the matrix resin, fiber yarns are synchronously paved on the upper side surface and the lower side surface of the matrix resin respectively through the fiber yarn roller 1, so that the matrix resin and the fiber yarns form a fiber mixture, and the fiber mixture is fed into a feed port of a channel gap of the chain plate type thermoplastic plate device 24 according to the step 02 in the first embodiment.
EXAMPLE III
As shown in fig. 1 to 4: the embodiment provides a chain plate type thermoplastic plate device, which has the same structure as the embodiment.
As shown in fig. 5: the preparation method of the long fiber thermoplastic plate is mainly based on the application of the chain plate type thermoplastic plate device 24 in the actual production of the long fiber thermoplastic plate, and is different from the first embodiment and the second embodiment in that the fiber mixture is prepared in the step 01, the laying of the fiber yarns in the second embodiment is added on the basis of the first embodiment, so that the inner part and the two side surfaces of the fiber mixture both contain fibers, and the specific implementation mode of the step 01 is as follows:
step 01: preparing a fiber mixture: adding the matrix resin granules into a storage tank according to design performance requirements and a formula proportion, adding the matrix resin granules into an extruder 23 by using a weightlessness type weighing scale for melting, adding long fibers into a feeding section of the extruder 23, and mixing, blending and banburying the long fibers with the matrix resin; the continuous fiber adopts fiber yarn or woven fiber felt cloth, the fiber material of the long fiber adopts any one of glass fiber, carbon fiber and plant fiber, the fiber yarn or woven fiber felt cloth is cut and then placed into an extruder 23, and the matrix resin is any one of polypropylene and polyethylene or corresponding modified resin thereof;
the extruder 23 adopts a double-screw extruder, the fiber mixture is extruded by a machine head of the extruder 23, and a mold opening in the machine head is processed and molded according to the design of the long fiber thermoplastic sheet; the extruder 23 comprises nine heating zones and a head, and the specific working temperature is as follows:
the temperature of the first zone is 170 ℃; the temperature of the second zone is 200 ℃; the temperature of the three zones is 205 ℃; the temperature of the fourth zone is 210 ℃; the temperature of the fifth area is 200 ℃; the temperature of the sixth zone is 200 ℃; the temperature of the seventh zone is 200 ℃; the temperature of the eight regions is 250 ℃; the temperature of the nine areas is 210 ℃; the temperature of the machine head is 210 ℃;
the extruder 23 is widely applied to blending, filling modification, reinforcing modification and extrusion molding of polymers, while the double-screw extruder adopted in the embodiment has good feeding characteristics and a wide application range, and has better mixing, exhausting, reacting and self-cleaning functions compared with a single-screw extruder, and in addition, the double-screw extruder has remarkable advantages in processing plastics and blends with poor thermal stability;
simultaneously with the extrusion of the matrix resin, unidirectional glass fiber yarns are synchronously paved on the upper side surface and the lower side surface of the matrix resin respectively through the fiber yarn roller 1, so that the matrix resin and the unidirectional glass fiber yarns form a fiber mixture, and the fiber mixture is fed into a feed port of a channel gap of the chain plate type thermoplastic plate device 24 according to the step 02 in the first embodiment.
The above description is only a preferred embodiment of the present invention, and the technical solutions to achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (15)
1. A flight thermoplastic panel apparatus, comprising:
the chain plate driving assemblies comprise an equipment bracket and a plurality of carrier rollers arranged on the equipment bracket, and chain plate bodies connected with the carrier rollers are arranged on the outer sides of the carrier rollers;
one group of chain plate driving components are positioned at the upper part, and the bottom of the chain plate body is provided with an upper pressing surface which is horizontally distributed; the other group of chain plate driving components are positioned at the lower part, and the top of the chain plate body is provided with a lower pressing surface which is horizontally distributed;
and a channel gap for conveying the plates is formed between the upper pressing surface and the lower pressing surface, the top surface of the upper pressing surface and the bottom surface of the lower pressing surface are respectively provided with the carrier roller, and the upper pressing surface and the lower pressing surface are pressed by the carrier rollers to convey the plates in the same direction.
2. The chain slat type thermoplastic panel apparatus as claimed in claim 1, wherein: the carrier roller includes drive roller and eccentric kneading roller, and the drive roller is equipped with at least two sets ofly, eccentric kneading roller sets up between adjacent drive roller, and eccentric kneading roller can constitute to the inside bellied portion of extrudeing of passageway clearance through rotating at last pressfitting face or lower pressfitting face surface.
3. The chain slat type thermoplastic panel apparatus as claimed in claim 2, wherein: two sets of tensioning respectively that lie in both ends in the drive roller the inner wall setting of link joint body drives through the drive roller the link joint body rotates in step.
4. The chain slat type thermoplastic panel apparatus as claimed in claim 2, wherein: the driving roller adopts a heating roller structure.
5. The chain slat type thermoplastic panel apparatus as claimed in claim 4, wherein: the inside heating passageway that is used for the heating medium circulation that is equipped with of drive roller, the length direction of heating passageway distributes and is close to the drive roller surface setting along the axial of drive roller, and the drive roller both ends are equipped with heating import and heating export respectively, and heating import and heating export respectively with the heating passageway intercommunication.
6. The chain slat type thermoplastic panel apparatus as claimed in claim 1, wherein: the telescopic adjusting mechanism is installed and fixed on the equipment support of one group of chain plate driving assemblies, and the telescopic end of the telescopic adjusting mechanism is connected with the equipment support of the other group of telescopic adjusting mechanism.
7. The chain slat type thermoplastic panel apparatus as claimed in claim 6, wherein: the telescopic adjusting mechanism comprises a screw rod and a fixing block, the screw rod penetrates through the fixing block and is in threaded connection with the fixing block, the fixing block is installed on one group of chain plate driving assemblies, and one end of the screw rod serves as the telescopic end and is connected with the other group of chain plate driving assemblies.
8. The chain slat type thermoplastic panel apparatus as claimed in claim 1, wherein: the chain plate kneading machine is characterized by further comprising a driving motor, wherein the driving motor is fixedly arranged on an equipment support of one group of chain plate driving assemblies, the output end of the driving motor is in transmission connection with any one group of driving rollers of the two groups of chain plate driving assemblies respectively, and the driving rollers of the same group of chain plate driving assemblies are in transmission connection with the eccentric kneading rollers.
9. A method for preparing a long fiber thermoplastic sheet is characterized by comprising the following steps:
the fiber mixture is fed into a feed inlet of a channel gap of chain plate type thermoplastic plate equipment, and the fiber mixture is subjected to hot-pressing compounding by two groups of chain plate driving assemblies to obtain a preprocessed fiber laminate, wherein the process conditions comprise:
the hot pressing temperature is 200-220 ℃;
the hot-pressing contact time is 30-60 s;
the rolling pressure is 16-20 MPa;
the height of the channel gap is smaller than the thickness value of the preprocessed fiber laminate by 0.1-0.5 mm.
10. The method of claim 9, wherein the long fiber thermoplastic sheet is prepared by: the fiber mixture is obtained by feeding matrix resin or a mixture of long fibers and the matrix resin into an extruder and carrying out melt extrusion.
11. The method of claim 10, wherein the long fiber thermoplastic sheet is prepared by: the fiber mixture also comprises fiber yarns positioned on the two side surfaces of the fiber mixture.
12. The chain slat type thermoplastic panel apparatus as claimed in claim 10, wherein: the matrix resin is any one of polypropylene and polyethylene or a modified resin corresponding to the polypropylene and the polyethylene.
13. The method of claim 10, wherein the long fiber thermoplastic sheet is prepared by: the long fiber is made of fiber yarn or woven fiber felt, and the fiber material of the long fiber is any one of glass fiber, carbon fiber and plant fiber.
14. The method of claim 10, wherein the long fiber thermoplastic sheet is prepared by: the extruder comprises nine heating zones and a head, and the specific working temperature is as follows:
the temperature of the first zone is 165-175 ℃; the temperature of the second zone is 195-205 ℃; the temperature of the three zones is 200-210 ℃; the temperature of the fourth zone is 205-215 ℃; the temperature of the five zones is 195-205 ℃; the temperature of the sixth zone is 195-205 ℃; the temperature of the seventh zone is 195-minus 205 ℃; the temperature of the eight area is 245-255 ℃; the temperature of the nine areas is 205-215 ℃; the head temperature is 205-215 ℃.
15. The method of claim 9, wherein the long fiber thermoplastic sheet is prepared by: the method also comprises a leveling procedure, wherein the preprocessed fiber laminate is fed into a smooth roll device at a discharge port of a channel gap of the chain plate type thermoplastic plate device, and the smooth roll device is used for leveling the surface of the preprocessed fiber laminate.
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