CN210733347U - Special pressurizing preimpregnation die head for fiber reinforced plastic sheet machine - Google Patents
Special pressurizing preimpregnation die head for fiber reinforced plastic sheet machine Download PDFInfo
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- CN210733347U CN210733347U CN201921385696.9U CN201921385696U CN210733347U CN 210733347 U CN210733347 U CN 210733347U CN 201921385696 U CN201921385696 U CN 201921385696U CN 210733347 U CN210733347 U CN 210733347U
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Abstract
The utility model relates to a special pressurized preimpregnation die head for a fiber reinforced plastic sheet machine, which comprises a die head main body, wherein the middle part of the die head main body is provided with at least one group of fiber channels which are arranged in a longitudinally through way, and fiber yarns are conveyed inside the fiber channels; the die head body comprises a feeding hole and a discharging hole which are communicated with each other, and the discharging hole is positioned outside the fiber channel and is used for paving the thermoplastic base materials in a molten state to two sides of the fiber yarns respectively; the utility model has the advantages of reasonable design, can lay on fibre yarn both sides surface when the thermoplasticity matrix is extruded, equipment whole production work efficiency is high, can be competent in the efficient production task in batches, and the overall preparation cost of combined material sheet and goods is lower, and fibre yarn and thermoplasticity matrix distribute evenly, combine effectually, are applicable to the great fibre yarn of thickness.
Description
Technical Field
The utility model relates to a combined material equipment technical field especially relates to a dedicated pressurization preimpregnation die head of fiber reinforced plastic sheet machine.
Background
The plastic fiber composite board is a composite material which is formed by pre-impregnating and compounding a molten base material and a reinforced fiber yarn fabric and then carrying out extrusion molding through a compression roller, and the plastic fiber board is widely used on automobile parts by virtue of the excellent properties of high strength and high density.
The plastic fiber reinforced plate is a composite material reinforced sheet material which is formed by laminating plastic fibers and a molten plastic at a certain temperature through compression molding, the thickness of the sheet material can be adjusted according to actual requirements, the sheet material can be manufactured and processed into various automobile parts and can replace metal parts, the vehicle weight can be reduced, and the plastic fiber reinforced plate has great significance for energy conservation and emission reduction;
the existing production process of plastic fiber reinforced product parts is generally to twist and break long fibers with screws by an extruder to be mixed with molten plastic, then the mixture is put into a mold to be extruded and molded into a product, the deformation of the product is difficult to control in the process, the strength of the composite material product part is not obviously enhanced due to short fiber length, the use requirements of light weight and high strength of a composite material product are difficult to complete, the existing production process of the composite material sheet is to lay the molten plastic on fiber yarns to be extruded and molded by a compression roller, the molten glue needs to penetrate through prefabricated fiber cloth to the other side in the molding process, the process melting effect is poor, the flow is not uniform enough, and the strength standard is difficult to achieve.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a special pressurizing preimpregnation die head for a fiber reinforced plastic sheet machine, which is used for producing composite material sheets meeting the product requirements.
The utility model provides a technical scheme that its technical problem adopted is:
a special pressurization preimpregnation die head for a fiber reinforced plastic sheet machine comprises a die head main body and is characterized in that:
the middle part of the die head body is provided with at least one group of fiber channels which are longitudinally arranged in a penetrating way, and fiber yarns are conveyed in the fiber channels;
the die head body comprises a feeding hole and a discharging hole which are communicated with each other, and the discharging hole is positioned outside the fiber channel and is used for paving the thermoplastic base materials in a molten state to two sides of the fiber yarns respectively.
Still included a plurality of compression rollers, the compression roller divide into two sets ofly and is located respectively fibre passageway lower part both sides, the thermoplasticity matrix of fibre gauze and both sides set up between two sets of compression rollers to by the compression roller extrusion the thermoplasticity matrix of fibre gauze and both sides thereof.
The cross section of the fiber channel is of a slender structure, and the discharge ports are respectively positioned on the inner walls of the two long sides of the fiber channel.
The die head body is internally provided with a heat flow channel for conveying thermoplastic base materials, one end of the heat flow channel is communicated with the feed inlet, and the other end of the heat flow channel is communicated with the discharge outlet in a one-to-one correspondence manner through a flow dividing channel.
The die head body is connected with the discharge end of the extruder, the feed inlet of the die head body is communicated with the discharge end of the extruder, and the extruder directly feeds the thermoplastic base material into the feed inlet of the die head body.
The discharge ports comprise two groups and are respectively positioned at two sides of the fiber channel;
the discharge ports of the same group are an opening;
or two or more openings are arranged in sequence, and the openings are distributed on the same straight line or different straight lines.
One end of the flow dividing channel communicated with the heat flow channel is also provided with a flow dividing cavity, and the heat flow channels are respectively communicated with the flow dividing channels one by one through the flow dividing cavity.
The hot flow channel is characterized in that the interior of one side, close to the feeding hole, of the hot flow channel also comprises a pressurizing chamber, a pressurizing screw rod which is rotatably arranged is arranged in the pressurizing chamber, one end of the pressurizing screw rod extends out of the die head body and is connected with a driving device, and the driving device is used for driving the pressurizing screw rod to rotate and conveying the thermoplastic base material.
One end of the distribution channel communicated with the discharge port is a material homogenizing chamber, one end of the material homogenizing chamber is communicated with the distribution channel, and the other end of the material homogenizing chamber is communicated with the discharge port.
The opening of the discharge port is of a slender structure, the material homogenizing chamber communicated with the feed port is of a flat structure, two side edges of the material homogenizing chamber are inclined planes, and the thickness of the material homogenizing chamber is gradually reduced from the diversion channel to the discharge port.
The utility model has the advantages that: structural design is reasonable, can lay on fibre yarn both sides surface when the thermoplasticity base material is extruded, and the whole production work efficiency of equipment is high, can be competent at the efficient production task in batches, and the overall preparation cost of combined material sheet and goods is lower, and fibre yarn and thermoplasticity base material distribute evenly, combine effectually, are applicable to the great fibre yarn of thickness.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the upper portion axial measurement structure of the present invention.
Fig. 2 is a schematic view of the lower shaft measuring structure of the present invention.
Fig. 3 is a schematic view of the structure of the present invention.
Fig. 4 is a schematic view of the structure of the right side of the present invention.
Fig. 5 is a schematic top view of the present invention.
FIG. 6 is a schematic bottom view of the die body.
FIG. 7 is a schematic perspective view of a thermal flow passage in the die body.
FIG. 8 is a schematic diagram of an axial structure of the heat flow channel.
Fig. 9 is a schematic top view of the heat flow channel.
In the figure: the device comprises an extruder 1, a motor 2, a speed reducer 3, a first module 4, a second module 5, a fiber channel 6, a third module 7, a fourth module 8, a press roller 9, a hot flow channel 10, a pressurization chamber 11, a diversion chamber 12, a diversion channel 13, a material homogenizing chamber 14, a discharge hole 15 and a pressurization screw 16.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
As shown in fig. 1 to 9: the embodiment provides a special pressurized prepreg die head for a fiber reinforced plastic sheet machine, which comprises a die head main body, wherein the die head main body is arranged at the discharge end of an extruder 1 and is used for controlling the discharge position and the shape of a thermoplastic base material in the extruder 1 and achieving a two-layer structure matched with fiber yarns, wherein the extruder 1 in each view adopts a schematic figure, the extruder 1 can adopt a single-screw extruder or a double-screw extruder, and for better explaining the structural principle of the embodiment, the specific implementation structure of the die head main body is as follows.
The middle part of the die head body is provided with a group of fiber channels 6 which are longitudinally arranged in a penetrating way, the cross sections of the fiber channels 6 are of slender structures and are used for matching with the shape of the flaky cross section of the fiber yarns, the fiber channels 6 are used for conveying the fiber yarns, and a certain gap is kept between two sides of the fiber yarns and the inner wall of the fiber channels 6 and is used for laying the thermoplastic base material;
the die head body comprises a feeding hole and a discharging hole 15 which are communicated with each other, the discharging hole 15 is positioned on the inner walls of two long sides of the fiber channel 6, the thermoplastic base material in a molten state in the die head body is extruded out from the discharging hole 15, and the thermoplastic base material is respectively paved on two sides of the fiber yarns, so that the thermoplastic base material and the surfaces of the two sides of the fiber yarns are simultaneously impregnated, the combination effect is good, and the melting effect and the quality of the composite material sheet are guaranteed;
the discharge ports 15 positioned at two sides of the fiber channel 6 are both openings with a long and thin structure, and the length directions of the openings are linearly distributed, so that the thermoplastic base material forms a flat structure when extruded out from the discharge ports 15 and can be directly paved on the surfaces of two sides of the fiber yarns;
further, the embodiment of the discharge hole 15 further includes: the discharge port 15 can be formed by a plurality of openings and is positioned on the same straight line, so that different sizes of the openings can be designed according to actual use, and thermoplastic clamping materials with different thicknesses can be laid at different positions on two sides of the fiber yarns; wherein when the opening is located different straight lines, then can make up and constitute a plurality of parallel distribution's discharge gate 15, can lay multilayer thermoplasticity sizing material in cellosilk both sides, corresponding in order to satisfy the transport effect of thermoplasticity base stock, the reposition of redundant personnel part in the heat flow channel 10 middle part of the inside of die head body can set up corresponding multiunit, and the volume of die head body also can increase, simultaneously with the 1 quantity of extruder that the die head body matches also can increase.
The die head body also comprises two groups of compression rollers 9, one compression roller 9 is arranged on each group, the two groups of compression rollers 9 are respectively positioned on two sides of the lower part of the fiber channel 6, the fiber gauze and the thermoplastic base materials on two sides of the fiber gauze are arranged between the two groups of compression rollers 9, and the compression rollers 9 extrude the fiber gauze and the thermoplastic base materials on two sides of the fiber gauze; in general, the gap between the press rolls 9 should be slightly smaller than the thickness of the composite material sheet formed by the fiber gauze and the thermoplastic base material, so as to maintain the extrusion effect of the press rolls 9 on the composite material sheet, meanwhile, both sides of the press rolls 9 should be installed and fixed by corresponding brackets, and the rotating assembly effect of the press rolls 9 is maintained, meanwhile, a driving device (such as a speed reduction motor) is utilized to control the rotation of the press rolls 9 and synchronously convey the composite material sheet to the outside, so as to achieve the effects of extrusion and traction, the impregnation effect of the fiber yarns and the two layers of thermoplastic base materials with different strengths is realized by the extrusion with a certain pressure, the conveying effect of the composite material sheet is ensured by traction, and meanwhile, the device should be matched with the discharge speed of the thermoplastic base materials, so that the device can continuously complete the production of the composite material sheet, wherein the installation and driving effect of, therefore, the detailed structure and connection relationship of the bracket and the driving device are not described in detail in this embodiment.
Further, in order to achieve the effect of stably conveying the thermoplastic base material in the die head body, a heat flow channel 10 for conveying the thermoplastic base material is arranged in the die head body, one end of the heat flow channel 10 is communicated with the feed inlet, the heat flow channel 10 is communicated with the two discharge outlets 15 in a one-to-one correspondence manner, in order to meet the requirement of normal conveying of the thermoplastic base material, the heat flow channel 10 sequentially comprises a pressurizing chamber 11, a flow dividing chamber 12, a flow dividing channel 13 and a material homogenizing chamber 14 from the feed inlet to the discharge outlets 15 in a square manner, wherein:
the die head is characterized in that the pressurizing chamber 11 is longitudinally distributed and arranged close to the feeding hole, a pressurizing screw 16 which is rotatably arranged is arranged in the pressurizing chamber 11, the bottom end of the pressurizing screw 16 extends out of the die head body and is connected with a driving device, the driving device comprises a motor 2 and a speed reducer 3, the output end of the motor 2 is connected with the input end of the speed reducer 3, the output end of the speed reducer 3 and the input end of the speed reducer 3 are mutually connected and fixed to form a whole, the output end of the speed reducer 3 is fixedly connected with the pressurizing screw 16, so that the motor 2 can drive the pressurizing screw 16 to rotate for conveying thermoplastic base materials, and the bottom of the speed reducer 3 is fixedly arranged; in the structure, the thermoplastic base material directly enters the pressurizing chamber 11 after entering the hot flow channel 10 from the extruder 1 through the feed inlet, and the thermoplastic base material sinks into the lower part of the pressurizing chamber 11 by the self gravity because the pressurizing chamber 11 is longitudinally distributed, and the pressurizing screw 16 can rotate by self and convey the thermoplastic base material downwards in the process, and the working principle of the pressurizing screw is similar to that of a single-screw extruder, so that the acceleration and pressurizing conveying of the thermoplastic base material are realized, and the stable supply effect of the thermoplastic base material at the discharge port 15 is ensured;
the flow dividing chamber 12 is located at the bottom end of the pressurizing chamber 11 and communicated with the pressurizing chamber 11, the pressurizing chamber 11 is of a flat structure, two sides of the flow dividing chamber 12 are symmetrically distributed, the pressurizing chamber 11 is located in the middle of the flow dividing chamber 12, the flow dividing chamber 12 is transversely distributed and relatively large in internal space, the thermoplastic base materials conveyed by the pressurizing chamber 11 can be temporarily stored, two openings symmetrically distributed relative to the pressurizing chamber 11 are further formed in the bottom surface of the pressurizing chamber 11 and communicated with the flow dividing channel 13, the structure can ensure that the thermoplastic base materials conveyed to the flow dividing channel 13 are sufficient, and the thermoplastic base materials in the two flow dividing channels 13 are uniformly distributed;
the material homogenizing chamber 14 is positioned between the flow dividing channel 13 and the discharge port 15, one end of the material homogenizing chamber 14 is communicated with the flow dividing channel 13, the other end of the material homogenizing chamber 14 is communicated with the discharge port 15, the opening length of the discharge port 15 is far greater than the diameter of the flow dividing channel 13, so that the material homogenizing chamber 14 is integrally of a triangular structure, the flow dividing channel 13 is communicated with one vertex angle position of the triangular structure, the discharge port 15 occupies one side edge opposite to the vertex angle of the flow dividing channel 13, and the thermoplastic base material is gradually diffused and moves towards the discharge port 15 after entering the flow dividing channel 13;
the homogenizing chamber 14 is of a flat structure, two side edges of the homogenizing chamber 14 are inclined planes, the thickness of the homogenizing chamber 14 is gradually reduced from the diversion channel 13 to the discharge port 15, through the structural design, the thermoplastic base materials can be uniformly conveyed into the cross section of the whole homogenizing chamber 14 after entering the homogenizing chamber 14, the thickness of the thermoplastic base materials in the homogenizing chamber 14 is changed in the conveying process, the materials are also distributed and diffused to the edges of the two sides of the homogenizing chamber 14, and finally the thermoplastic base materials are uniformly conveyed out of the whole discharge port 15.
Meanwhile, in this embodiment, in the structure of the heat flow channel 10 in the above structure, the die head body includes a first module 4, a second module 5, a third module 7 and a fourth module 8 that are fixedly connected to each other, wherein the first module 4 is located at the upper portion of the left side, a pressurizing chamber 11 and a flow dividing chamber 12 are provided in the first module 4, the second module 5 is located at the bottom of the first module 4 and at the top of the third module 7, a fiber channel 6 is provided in the middle of the third module 7, the second module 5 is in a U-shaped structure, so that the middle of the second module 5 and the third module 7 avoids the position of the fiber channel 6, the flow dividing channels 13 are respectively provided in the second module 5 and the third module 7, the fourth module 8 is located at the bottom of the third module 7, and the material homogenizing chamber; through the structure, the whole heat flow channel 10 can be processed on different modules in different regions, and finally the whole heat flow channel can be formed to meet the use requirement.
The special pressurized prepreg die head for the fiber reinforced plastic sheet machine based on the structure has the following process in actual production:
preheating long fiber gauze: placing the fiber yarn roller wound with the fiber yarn on a corresponding support, and preheating the fiber yarn by heating mechanisms such as a heating roller and the like in the fiber yarn conveying process, wherein the preheating temperature is 220-;
melting of the thermoplastic base material: meanwhile, the extruder 1 adopts a single-screw extruder or a double-screw extruder to melt and extrude the thermoplastic base material into the die head body, and the thermoplastic base material can adopt any one of polyethylene, polypropylene, polyurethane, polystyrene, polyvinyl chloride, polyamide, epoxy resin, phenolic resin and unsaturated polyester resin or modified resin corresponding to the thermoplastic base material;
combining the thermoplastic base material with the fiber yarn: the fiber yarns are conveyed from top to bottom in the fiber channel 6, meanwhile, the thermoplastic base materials in a molten state are paved on two sides of the fiber yarns through a discharge port 15 of the die head body, the fiber yarns and the thermoplastic base materials are conveyed downwards and are fed between the compression rollers 9 at the same time, fiber cloth and the thermoplastic base materials are further uniformly fused under the extrusion of the compression rollers 9, the thickness of the composite material sheet is kept uniform, and the first-time prepressing is completed;
and finally, feeding the composite material sheet into a chain plate type device for re-extrusion, and finally cutting to obtain the composite material sheet with the specified size, wherein the composite material sheet is directly placed into a die of a die pressing device and pressed into a product.
The above is only the preferred embodiment of the present invention, as long as the preferred embodiment is realized by the same means, the objective technical solution of the present invention all belongs to the protection scope of the present invention.
Claims (10)
1. A special pressurization preimpregnation die head for a fiber reinforced plastic sheet machine comprises a die head main body and is characterized in that:
the middle part of the die head body is provided with at least one group of fiber channels which are longitudinally arranged in a penetrating way, and fiber yarns are conveyed in the fiber channels;
the die head body comprises a feeding hole and a discharging hole which are communicated with each other, and the discharging hole is positioned outside the fiber channel and is used for paving the thermoplastic base materials in a molten state to two sides of the fiber yarns respectively.
2. The pressurized prepreg die head for fiber reinforced plastic sheet machines of claim 1, wherein: still included a plurality of compression rollers, the compression roller divide into two sets ofly and is located respectively fibre passageway lower part both sides, the thermoplasticity matrix of fibre gauze and both sides set up between two sets of compression rollers to by the compression roller extrusion the thermoplasticity matrix of fibre gauze and both sides thereof.
3. The pressurized prepreg die head for fiber reinforced plastic sheet machines of claim 1, wherein: the cross section of the fiber channel is of a slender structure, and the discharge ports are respectively positioned on the inner walls of the two long sides of the fiber channel.
4. The pressurized prepreg die head for fiber reinforced plastic sheet machines of claim 1, wherein: the die head body is internally provided with a heat flow channel for conveying thermoplastic base materials, one end of the heat flow channel is communicated with the feed inlet, and the other end of the heat flow channel is communicated with the discharge outlet in a one-to-one correspondence manner through a flow dividing channel.
5. The pressurized prepreg die head for fiber reinforced plastic sheet machines of claim 1, wherein: the die head body is connected with the discharge end of the extruder, the feed inlet of the die head body is communicated with the discharge end of the extruder, and the extruder directly feeds the thermoplastic base material into the feed inlet of the die head body.
6. The pressurized prepreg die head for fiber reinforced plastic sheet machines of claim 1, wherein: the discharge ports comprise two groups and are respectively positioned at two sides of the fiber channel;
the discharge ports of the same group are an opening;
or two or more openings are arranged in sequence, and the openings are distributed on the same straight line or different straight lines.
7. The pressurized prepreg die head for fiber reinforced plastic sheet machine according to claim 4, wherein: one end of the flow dividing channel communicated with the heat flow channel is also provided with a flow dividing cavity, and the heat flow channels are respectively communicated with the flow dividing channels one by one through the flow dividing cavity.
8. The pressurized prepreg die head for fiber reinforced plastic sheet machine according to claim 4, wherein: the hot flow channel is characterized in that the interior of one side, close to the feeding hole, of the hot flow channel also comprises a pressurizing chamber, a pressurizing screw rod which is rotatably arranged is arranged in the pressurizing chamber, one end of the pressurizing screw rod extends out of the die head body and is connected with a driving device, and the driving device is used for driving the pressurizing screw rod to rotate and conveying the thermoplastic base material.
9. The pressurized prepreg die head for fiber reinforced plastic sheet machine according to claim 4, wherein: one end of the distribution channel communicated with the discharge port is a material homogenizing chamber, one end of the material homogenizing chamber is communicated with the distribution channel, and the other end of the material homogenizing chamber is communicated with the discharge port.
10. The pressurized prepreg die head for fiber reinforced plastic sheet machines of claim 8, wherein: the opening of the discharge port is of a slender structure, the material homogenizing chamber communicated with the feed port is of a flat structure, two side edges of the material homogenizing chamber are inclined planes, and the thickness of the material homogenizing chamber is gradually reduced from the diversion channel to the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385696.9U CN210733347U (en) | 2019-08-26 | 2019-08-26 | Special pressurizing preimpregnation die head for fiber reinforced plastic sheet machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385696.9U CN210733347U (en) | 2019-08-26 | 2019-08-26 | Special pressurizing preimpregnation die head for fiber reinforced plastic sheet machine |
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| Publication Number | Publication Date |
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| CN210733347U true CN210733347U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921385696.9U Active CN210733347U (en) | 2019-08-26 | 2019-08-26 | Special pressurizing preimpregnation die head for fiber reinforced plastic sheet machine |
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| CN (1) | CN210733347U (en) |
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- 2019-08-26 CN CN201921385696.9U patent/CN210733347U/en active Active
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