CN211416367U - Pultrusion mould for composite material production and fiber reinforced composite material with cavity - Google Patents
Pultrusion mould for composite material production and fiber reinforced composite material with cavity Download PDFInfo
- Publication number
- CN211416367U CN211416367U CN201920702918.9U CN201920702918U CN211416367U CN 211416367 U CN211416367 U CN 211416367U CN 201920702918 U CN201920702918 U CN 201920702918U CN 211416367 U CN211416367 U CN 211416367U
- Authority
- CN
- China
- Prior art keywords
- glue injection
- cavity
- injection box
- die
- core
- 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.)
- Active
Links
Images
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
A pultrusion mould for producing composite materials and a fiber reinforced composite material with a cavity comprise a glue injection box, a forming mould and one or more core moulds, wherein the glue injection box comprises a channel for the core moulds to penetrate through, the channel is provided with a feed inlet and a discharge outlet, a guide strip is arranged in the channel, the guide strip extends from one side of the feed inlet to one side of the discharge outlet, one end of the core mould is supported or fixed by the guide strip, the other end of the core mould is arranged in the cavity of the forming mould, and the guide strip enables the distance between the core mould and the inner wall of the cavity of the forming mould to be kept; when the fiber passes through, the liquid matrix material in the glue injection box moves forwards along with the fiber, and the internal pressure of the liquid matrix material is increased because the cross section area of the channel is gradually reduced, so that the fiber can be quickly soaked to form a composite material precursor; the composite material precursor is gathered near the inlet of the forming mold cavity through the two sides of the guide strip and enters the gap between the core mold and the inner wall of the forming mold cavity to be cured or shaped into the composite material with the cavity, so that the precision of the wall thickness of the composite material cavity is improved.
Description
Technical Field
The utility model relates to a combined material pultrusion technical field, concretely relates to a fiber reinforced composite who is used for material complex pultrusion mould and has die cavity.
Background
Composite materials are materials with distinct phase separation characteristics formed by mixing two or more materials, the morphology and the performance of the composite materials are different from those of any one of the materials alone, the main components of the composite materials are matrix materials and reinforcing materials, and fibers are the most commonly used reinforcing materials. In general, composite materials refer to materials in their final form after molding, while materials in their form before final molding after mixing of matrix materials with reinforcing materials are referred to as composite precursors. The pultrusion process is to solidify or shape the continuous fiber yarn and fabric soaked with liquid base material under the action of traction force through a mould with a constant section cavity to continuously produce the composite material with unlimited length. In the production of the composite material with the cavity, a core mold with the same section as that of the composite material cavity penetrates through the cavity of the mold, one end of the core mold is fixed outside the cavity of the mold, the other end of the core mold is freely suspended in the cavity of the mold, and the thickness of the wall of the composite material cavity is determined by the gap between the core mold and the cavity of the mold. At present, the length of the composite material pultrusion mould is generally between 600 millimeters and 1000 millimeters, wherein the pultrusion mould with the length of 900-1000 millimeters is widely used.
In the existing pultrusion process of composite materials, a method for impregnating fibers by a resin continuous injection method is an effective method, resin is continuously injected into a cavity of a specially designed glue injection box according to actual demand, so that the fibers passing through the cavity of the glue injection box are quickly soaked and then enter a mold cavity connected with the rear section of the glue injection box for curing or shaping, and in many designs, the glue injection box is designed to be a part of a mold inlet to play the same function. The continuous resin injection method is rapidly used in composite pultrusion, but it is difficult to achieve high wall thickness accuracy in the manufacture of pultruded composite articles with a cavity. This is because in the pultrusion of composite materials, one end of the core mold needs to be freely suspended in the glue injection box and the mold cavity at the same time, which causes the cantilever length of the core mold to be greatly lengthened and easily to rock or rotate in the mold cavity, which causes the gap size between the core mold and the mold cavity to be changed, and the wall thickness precision of the composite material cavity to be reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a pultrusion mould for material is compound supports mandrel one end outside the mould cavity through the supporting part, makes the inner wall interval of the other end of mandrel and die cavity remain stable in the mould cavity to guarantee the precision of combined material shaping back wall thickness.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a pultrusion die for producing composite materials comprises a forming die, one or more than two core dies and one or more than two supporting parts for supporting or fixing the core dies, wherein the forming die is provided with a cavity, the cavity is provided with a cavity inlet and a cavity outlet, one end of the core die is arranged in the cavity through the cavity inlet, the other end of the core die is positioned outside the cavity inlet and is supported or fixed by the supporting parts, and the cross sections of the supporting parts are gradually reduced along the running direction of fibers.
The utility model discloses further set up to: the supporting part is a guide strip, the length direction of the guide strip is consistent with that of the core mould, and the length of the guide strip is greater than or equal to 10 mm.
The utility model discloses further set up to: the guide strip is positioned outside the cavity inlet, and the distance from the end with the smallest cross section of the guide strip to the cavity inlet is 0-200 mm.
The utility model discloses further set up to: the pultrusion die for producing the composite material is also provided with an auxiliary supporting device for auxiliary supporting or fixing of the core die, and the supporting part is arranged between the auxiliary supporting device and the entrance of the cavity.
The utility model discloses further set up to: the number of the core moulds is more than two, a spacing bar is arranged between the core moulds, and the length of the spacing bar is more than or equal to 10 mm.
The utility model discloses further set up to: the cross section of the spacing bars becomes gradually smaller along the running direction of the fiber.
The utility model discloses further set up to: the cross section of one side of the spacing bar close to the entrance of the cavity is zero or larger than zero.
The utility model discloses further set up to: the spacer bar and the core mold are connected with each other or manufactured integrally.
The utility model discloses further set up to: the glue injection box comprises a channel, the channel comprises a glue injection box feeding port and a glue injection box discharging port, a distance is reserved between the glue injection box discharging port and the cavity inlet, or the glue injection box and the forming die are connected with each other or hermetically connected with each other or integrally manufactured, the part of the core die, which is positioned outside the cavity, penetrates through the channel, and the part of the core die, which is positioned outside the cavity, penetrates through the channel.
The utility model discloses further set up to: a part or all of the guide strip is arranged in the channel
The utility model discloses further set up to: the guide strip is fixed to the channel and/or the core mold or the guide strip is manufactured integrally with the channel and/or the core mold.
The utility model discloses further set up to: the guide strip extends towards one side of the glue injection box discharge port continuously from one side of the glue injection box feed port, or the guide strip extends to the glue injection box discharge port continuously from the glue injection box feed port, or extends out of the glue injection box discharge port.
The utility model discloses further set up to: one or more or all of the guide strip, the core mold, the spacing strip and the channel are provided with runner grooves perpendicular to the running direction of the fiber. .
The utility model discloses further set up to: the area of the feeding hole of the glue injection box is S1, the area of the discharging hole of the glue injection box is S2, the cross sectional area of the guide strip on one side of the feeding hole of the glue injection box is S3, the cross sectional area of the guide strip on one side of the discharging hole of the glue injection box is S, n guide strips (n is more than or equal to 1) are arranged in the channel, and S1-nS3 is met when S2-nS is more than or equal to S1-nS 3.
The utility model discloses further set up to: the area of the feeding hole of the glue injection box is S1, the area of the discharging hole of the glue injection box is S2, the cross-sectional area of the spacer bars on one side of the feeding hole of the glue injection box is SJ3, the cross-sectional area of the spacer bars on one side of the discharging hole of the glue injection box is SJ4, m spacer bars are arranged in the channel, m is more than or equal to 1, and S1-mSJ3 is satisfied when S2-mSJ 4.
The utility model discloses further set up to: n guide strips are arranged in the channel, and n is more than or equal to 1, so that S2-mSJ4-nS4 is less than or equal to S1-mSJ3-nS 3.
The utility model discloses further set up to: the glue injection box is provided with a glue injection hole communicated with the channel.
The utility model also provides a manufacturing approach of fibre reinforced composite with die cavity, adopt a pultrusion mould for the composite production, include following step:
a) placing the core mold in the cavity and supported or secured with the guide bar;
b) after the fiber material is impregnated with the liquid matrix material to form the composite material precursor, the composite material precursor is pulled forwards and is converged at the inlet of the cavity through the two sides of the guide strip, and then the composite material precursor enters the cavity;
c) the composite material precursor is cured or set into a composite material between the cavity and the core mold.
The utility model also provides a manufacturing approach of fibre reinforced composite with die cavity, still include:
the core mold penetrates through the glue injection box;
passing the fibrous material through the channel;
injecting the liquid matrix material into the channel.
The utility model also provides a fibre reinforced composite material with die cavity, foretell manufacturing method production manufacturing. Or by using any of the pultrusion dies for composite production described above.
The utility model also provides a combined material's application, the fibre reinforced composite who has the die cavity is used for making the frame section bar including door, window, curtain.
To sum up, the utility model discloses following effect has:
1. the guide strip arranged in the glue injection box greatly reduces the cantilever of the core mould in the mould cavity, so that the core mould is accurately and stably positioned in the glue injection box and the mould, and simultaneously the passing fiber and the liquid matrix material are not interfered, thereby greatly improving the wall thickness precision of the composite material after molding;
2. the guide strip is opposite to and keeps supporting the core mould from the feeding hole to the discharging hole of the glue injection box, so that the position degree of the core mould in the glue injection box and the mould is ensured;
3. the guide strip smoothly and gradually shrinks from the feed inlet to one side of the discharge outlet without dead angles, so that fibers in the glue injection box can cling to the guide strip and continuously take away the liquid matrix material on the surface of the guide strip, and the liquid matrix material is not solidified on the inner wall of the channel and the surface of the guide strip;
4. the gaps between the inner wall of the channel and the guide strips and/or the spacing strips, namely the glue injection cavity, are continuously reduced, and when the fibers continuously pass through the glue injection cavity enclosed by the inner wall of the channel, the core mold, the guide strips and/or the spacing strips, the inner pressure of the liquid matrix material is increased due to the gradual reduction of the glue injection cavity, so that the efficiency of the liquid matrix material for soaking the fibers is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.
FIG. 1 is a schematic view of the overall structure of a composite pultrusion die for materials in example 1;
fig. 2 is a schematic view showing an internal structure of a pultrusion die in example 1, which is mainly used in a state where a core die is integrally formed;
fig. 3 is a schematic view showing an internal structure of a pultrusion die in example 1, which is mainly used for embodying a state where a core die is absent;
fig. 4 is a schematic view of the overall structure of the glue injection box in embodiment 1, which is mainly used for showing the structure on one side of the feed port of the glue injection box;
fig. 5 is a schematic view of the overall structure of the glue injection box in embodiment 1, which is mainly used for showing the structure at one side of the discharge port of the glue injection box;
FIG. 6 is a front view of the inlet side of the cartridge in example 1;
FIG. 7 is a schematic view showing the construction of the injection box of example 2 comprising two core molds and a spacer;
FIG. 8 is a flowchart of a method of manufacturing the composite material of example 3.
In the figure: 1. forming a mould; 11. a cavity; 111. a cavity entrance; 112. a cavity outlet; 2. injecting a glue box; 21 channels; 211. A feeding hole of the glue injection box; 212. a discharging port of the glue injection box; 22. a glue injection port; 3. a flange; 4. a core mold; 5. a guide strip; 6. A spacer bar; 7. a runner groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to realize the purpose of the utility model, in some embodiments, the following technical scheme is adopted:
as shown in fig. 1, 2 and 3, a pultrusion die for composite material production includes a molding die having a cavity inlet and a cavity outlet, a core die having one end placed in the cavity through the cavity inlet and the other end located outside the cavity inlet and supported or fixed by a support portion having a cross section gradually reduced in a fiber running direction, and a core die and a support portion for supporting or fixing the core die. In order to reduce the abrasion of the fibers by the supporting part in the running process, the supporting part is a guide strip, the length direction of the guide strip is consistent with the length direction of the core mold, and the length of the guide strip is more than or equal to 10mm, preferably, the guide strip in the scheme is a wedge with a gradually reduced cross section along the length direction of the running fibers, more preferably, the tail end of the guide strip is shrunk to zero, and the fiber core mold support and fixing device has the advantages that the core mold can be supported or fixed, the space occupied by the guide strip can be gradually reduced, and the fibers can have enough space to pass through; in order to prevent the fiber from being pinched off by being caught in a gap between the guide strip and the core mold and/or the passage when the fiber advances in the passage, the guide strip is in close abutment with the core mold and/or the passage, preferably, the guide strip is in continuous close abutment with the core mold and/or the passage from the starting end to the ending end in the fiber advancing direction, and more preferably, the guide strip is integrally manufactured with the passage; preferably, the length of the guide strip is greater than or equal to 50mm, more preferably, the length of the guide strip is greater than or equal to 100mm, most preferably, the length of the guide strip is greater than or equal to 200mm, and the guide strip which is as long as possible is used for supporting or fixing the core mold, so that the distance between the core mold and the inner wall of the cavity in the cavity is ensured to be constant; the guide strip is positioned at the outer side of the cavity inlet, the distance from the minimum end of the cross section of the guide strip to the cavity inlet is 0-200mm, preferably, the distance from the minimum end of the cross section of the guide strip to the cavity inlet is 0-100 mm, more preferably, the distance from the minimum end of the cross section of the guide strip to the cavity inlet is 0-50 mm, and the effect is that the guide strip is close to the cavity inlet as much as possible, the cantilever distance of the core mold in the cavity is as small as possible, and the stable gap between the core mold and the inner wall of the cavity is ensured; in order to increase the stability of the long core mold in the actual production process, an auxiliary support means for auxiliary support or fixation of the core mold is further provided, and a support portion is usually provided between the auxiliary support means and the cavity entrance.
As shown in fig. 3, 4 and 5, a glue injection box is arranged on one side of the inlet of the cavity, the glue injection box comprises a channel, the channel comprises a feed port of the glue injection box and a discharge port of the glue injection box, the glue injection box is provided with a glue injection hole communicated with the channel, and the liquid matrix material enters the channel through the glue injection hole. During the actual production, have distance between injecting glue box discharge gate and the die cavity entry or injecting glue box discharge gate and die cavity entry correspond and be connected. A part or the whole of the guide strip is arranged in the channel; the guide strip is fixed to the channel and/or the core mold. In actual production, the part of the core mold outside the cavity penetrates the passage. The guide strip extends towards one side of the glue injection box discharge port from one side of the glue injection box feed port continuously, or the guide strip extends to the glue injection box discharge port from the glue injection box feed port continuously, or extends out of the glue injection box discharge port, preferably, the distance between the starting end of the guide strip and the glue injection box feed port is 0-100 mm, more preferably, 0-50 mm, most preferably, 0-10 mm, and the guide strip has the effect that the fiber is separated by the guide strip at the place with the largest channel space, and the fiber is not compressed by the channel when passing through, so that the fiber is not broken by the starting end of the guide strip easily.
Referring to fig. 6, the area of the feed inlet of the glue injection box is S1, the area of the discharge outlet of the glue injection box is S2, the cross-sectional area of the guide strip on the side of the feed inlet of the glue injection box is S3, the cross-sectional area of the guide strip on the side of the discharge outlet of the glue injection box is S4, and n guide strips (n is greater than or equal to 1) are arranged in the channel, so that the requirement that S2-nS4 is less than or equal to S1-nS3 is met.
In the scheme, the glue injection box and the forming die are mutually connected in a sealing way or are manufactured integrally; the guide strip and the channel inside the glue injection box are connected with each other or integrally manufactured.
The specific implementation process comprises the following steps:
when the glue injection box is 200-400 mm in length and is connected with the forming die in a sealing manner, the guide strip is wedge-shaped, the cross section area of the wedge-shaped guide strip is gradually reduced along the advancing direction of the fibers and is as long as the glue injection box, preferably, the guide strip starts from the feed port of the glue injection box, more preferably, the cross section of the guide strip at the discharge port of the glue injection box is reduced to zero, further preferably, the guide strip and the channel of the glue injection box are manufactured integrally, the core die penetrates through the channel of the glue injection box and the cavity of the forming die, the core mold starts from the outside of the feed inlet of the glue injection box and ends at the outlet of the cavity of the forming mold, the cross section of the core mold is constant, in actual production, the cross-sectional area of the starting end of the core mold is smaller than that of the other portion, and is locked by the locking mechanism, the core mould is prevented from being pulled into the cavity of the forming mould in the pultrusion process, when the pultrusion process needs to be stopped, and the locking mechanism is opened, so that the core mold can enter the cavity of the forming mold together with the fiber and is finally pulled out for cleaning. In this case, the core mold is tightly abutted by the four guide strips from top to bottom and from left to right, thereby being fixed in the channel of the glue injection box, since the guide strips are as long as the glue injection box, the core mold can be fixed stably without additional auxiliary support, the minimum distance between the guide strip and the inlet of the cavity of the forming mold is only 0-20 mm as the guide strip is contracted to the outlet of the glue injection box, so that the cantilever of the core mold hanging in the cavity is minimum and thus is fixed most stably, the probability of the core mold shaking in the cavity of the molding die is minimum, because the guide strip is tightly abutted against the core mold and the channel, the fiber can not be clamped into the gap between the guide strip and the core mold and the channel when advancing in the channel, therefore, the fiber can not be pinched off, meanwhile, the length direction of the guide strip is consistent with the advancing direction of the fiber, the fiber advances along the side wall of the guide strip, and the fiber can not be rubbed off by the guide strip to block the inlet of a forming die cavity; in this case, the cross-sectional area of the feed port is larger than the cross-sectional area of the discharge port, the cross-sectional area of the starting end of the guide strip is large, the cross-sectional area of the ending end is zero, and the difference between the cross-sectional area of the feed port minus the cross-sectional areas of 4 guide strips is larger than the difference between the cross-sectional area of the discharge port minus the cross-sectional area of the guide strips, so that the fibers advance in a gradually reduced channel, the internal pressure of the liquid matrix material in the channel is increased, the fibers are soaked quickly, and bubbles are discharged towards the feed port.
In other embodiments, on the basis of the above embodiments, as shown in fig. 7, there are more than two core molds, and a spacer is disposed between the core molds, in this scheme, the spacer is a wedge with a gradually decreasing cross section along the length direction of the fiber running, which has the effect of not only supporting or fixing the core molds, but also gradually reducing the space occupied by the spacer, so that the fiber has enough space to pass through.
The length of the spacing bars is more than or equal to 10mm, preferably, the length of the spacing bars is more than or equal to 50mm, more preferably, the length of the spacing bars is more than or equal to 100mm, most preferably, the length of the spacing bars is more than or equal to 200mm, and the spacing bars which are as long as possible are used for supporting or fixing the core moulds, so that the distance between the core moulds is ensured to be stable and constant.
In order to reduce the resistance of the spacing bar to the forward running of the fiber, the cross section of the spacing bar is gradually reduced along the running direction of the fiber, the cross section of one side of the spacing bar close to the inlet of the cavity is zero or more than zero, preferably, the cross section area of one side of the spacing bar close to the inlet of the cavity is 1/2 of the cross section area of the starting end of the spacing bar, more preferably, the cross section area of one side of the spacing bar close to the inlet of the cavity is 1/4 of the cross section area of the starting end of the spacing bar, and more preferably, the cross section area of one side of the spacing bar close to the inlet of the cavity is 63.
In order to prevent the fiber from being pinched off by being caught in a gap between the spacer and the core mold when the fiber advances in the passage, the spacer is in close contact with the core mold, preferably, the spacer is in continuous close contact with the core mold from a starting end to a finishing end in a fiber advancing direction, and more preferably, the spacer and the core mold are connected to each other or integrally manufactured.
Referring to fig. 7, in the present embodiment, one or more or all of the guide bars, the core mold, the spacers, and the channels are provided with channel grooves perpendicular to the fiber running direction, the channel grooves connect the channels separated by the guide bars or the spacers, so that the liquid matrix material can smoothly flow and be uniformly distributed in the channels, and the channel grooves disposed on the core mold and on the inner wall of the channels can assist the liquid matrix material to be uniformly distributed around the channels or the cross section of the core mold, so that all the fibers passing through the channels can be soaked.
In the scheme, the area of a feed inlet of the glue injection box is S1, the area of a discharge outlet of the glue injection box is S2, the cross sectional area of the spacer bars on one side of the feed inlet of the glue injection box is SJ3, the cross sectional area of the spacer bars on one side of the discharge outlet of the glue injection box is SJ4, m spacer bars are arranged in a channel, m is more than or equal to 1, and S1-mSJ3 is satisfied when S2-mSJ4 is more than or equal to S1-mSJ 3; when n guide strips are arranged in the channel, and n is more than or equal to 1, S2-mSJ4-nS4 is more than or equal to S1-mSJ3-nS3, the liquid matrix material can be driven to advance together in the advancing process of the fibers, the space passing through the channel is gradually reduced, the internal pressure of the liquid matrix material is increased, and fine bubbles are discharged from a feed inlet of the glue injection box while the fibers are soaked.
The specific implementation process comprises the following steps:
the cross section area of the starting end of the core mould is smaller than that of other parts, and the core mould is locked by the locking mechanism, so that the core mould is prevented from being pulled into the cavity of the forming mould in the pultrusion process, and when the pultrusion process needs to be stopped, the locking mechanism is opened, so that the core mould and the fibers can enter the cavity of the forming mould and are finally pulled out and cleaned. In this case, 2 core moulds are provided, a spacing strip is arranged between the core moulds and manufactured integrally with the core moulds, and the spacing strip ensures that the distance between the core moulds is fixed; the core mold is tightly abutted by six guide bars from top to bottom and from left to right so as to be fixed in a channel of the glue injection box; the spacer is a wedge with the cross section area gradually reduced along the fiber advancing direction, the spacer is as long as the glue injection box, the spacer starts from a feed port of the glue injection box, the cross section contraction of a discharge port of the glue injection box is zero, the spacer starts from the outside of the feed port of the glue injection box and ends at a cavity outlet of the forming die, the spacer is as long as 200-400 mm and contracts to the discharge port of the glue injection box, the minimum distance from the cavity inlet of the forming die is only 0-20 mm, so that the cantilever of the core die hanging in the cavity is minimum, the probability of shaking of the core die in the cavity of the forming die is minimum, and the distance between the core dies is fixed to be most stable; the spacing bar and the core die are manufactured integrally, so that fibers cannot be clamped and broken when advancing in the channel and cannot be clamped and broken by a gap between the spacing bar and the core die, meanwhile, the length direction of the spacing bar is consistent with the advancing direction of the fibers, and the fibers advance along the side wall of the spacing bar and cannot be broken by the spacing bar to block the inlet of a forming die cavity; in this case, the cross-sectional area of the feed port is larger than the cross-sectional area of the discharge port, the cross-sectional area of the starting end of the guide strip is large, the cross-sectional area of the ending end is zero, the cross-sectional area of the starting end of the spacer strip is large, the difference between the cross-sectional area of the feed port minus the cross-sectional areas of 6 guide strips and the cross-sectional area of the starting end of the spacer strip is larger than the difference between the cross-sectional area of the discharge port minus the cross-sectional areas of all the guide strips and the cross-sectional area of the spacer strip, so that the fibers advance in a gradually reduced channel, the internal pressure of the liquid matrix material in the channel is increased, and the fibers are soaked.
And the inner wall of the channel, the core mold, the guide strip and the spacing strip are all provided with a runner groove perpendicular to the advancing direction of the fibers to form an annular runner groove perpendicular to the advancing direction of the fibers, so that the liquid matrix material injected into the channel can be rapidly distributed annularly along the runner groove, and the fibers can be uniformly infiltrated by the liquid matrix material.
The fiber reinforced composite material with the cavity can be manufactured by the following method, as shown in fig. 1 to 8, the pultrusion die for producing the composite material comprises the following steps:
a) placing the core mold in the cavity and supporting or fixing it with a guide bar;
b) dipping fibers in a liquid base material to form a composite material precursor, then drawing the precursor forwards, gathering the precursor at the inlet of the cavity through two sides of the guide strip, and then entering the cavity;
c) the composite material precursor is cured or set into a composite material between the cavity and the core mold.
Further still include:
a) the core mold passes through the glue injection box;
b) passing the fibrous material through the channel;
c) a liquid matrix material is injected into the channel.
The wall thickness precision of the composite material cavity produced by the method can be greatly improved to be within 0.2mm, and meanwhile, the abrasion of the core mold supporting part to the fibers is reduced, and the positioning precision of the fibers is improved, so that the pultrusion production quality of the composite material is greatly improved, and the risk of the fiber breaking and mold blocking machine halt is reduced.
The specific implementation mode is as follows:
when the liquid base material is polyurethane resin and the fiber is glass fiber, the forming mold is provided with a heating device, the polyurethane resin soaks the glass fiber in the glue injection box to form a composite material precursor, the composite material precursor enters a cavity of the heated forming mold, the polyurethane resin reacts and solidifies in the forming mold to form the composite material precursor, and the composite material is continuously pulled out of the forming mold.
When the liquid base material is molten thermoplastic polymer and the fiber is glass fiber, the outlet of the forming mold is provided with a cooling and shaping device, the thermoplastic polymer soaks the glass fiber in the glue injection box to form a composite material precursor, the composite material precursor enters the cavity of the heated forming mold, the thermoplastic polymer is cooled and shaped at the outlet of the forming mold to form the composite material precursor into the composite material, and the composite material is continuously drawn out of the forming mold.
When the liquid base material is molten aluminum alloy and the fiber is glass fiber, the outlet of the forming mold is provided with a cooling and shaping device, the aluminum alloy is soaked with the glass fiber in the glue injection box to form a composite material precursor, the composite material precursor enters a cavity of the heated forming mold, the thermoplastic polymer is cooled and shaped at the outlet of the forming mold to form the composite material precursor into the composite material, and the composite material is continuously pulled out of the forming mold.
Adopt the utility model discloses aforementioned manufacturing method, or adopt aforementioned arbitrary the pultrusion mould production for combined material production can produce a fibre reinforced composite who has the die cavity. The fiber reinforced composite material with the cavity can be applied to manufacturing frame profiles of doors, windows and curtain walls. This embodiment exemplifies an example in which a composite material with a cavity is applied to a door, a window, and a curtain wall as a frame material. The combined material is used by 15 ~ 25% weight ratio's polyurethane resin and 75 ~ 85% glass fiber the utility model discloses a technology is made, has 1 ~ 4 die cavities, the wall thickness is 1.5 ~ 3.5mm, the wall thickness precision can be controlled within 0.2mm, the combined material frame section bar of making has the rigidity equal with cross-section aluminum alloy frame section bar, heat transfer coefficient is the 1/700 of the latter, the elastic deformation scope is 5 times of the latter, the door, window, the curtain wall that this kind of combined material cutting group frame back and door plant, glass and sealing material made together give sound insulation, thermal-insulated, anti wind pressure, anti water permeability can far exceed the corresponding product that current material made.
It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.
Claims (18)
1. A pultrusion die for composite material production is characterized by comprising a forming die, one or more than two core dies and one or more than two supporting parts for supporting or fixing the core dies, wherein the forming die is provided with a cavity, the cavity is provided with a cavity inlet and a cavity outlet, one end of the core die is arranged in the cavity through the cavity inlet, the other end of the core die is positioned outside the cavity inlet and is supported or fixed by the supporting parts, and the cross sections of the supporting parts are gradually reduced along the running direction of fibers.
2. The pultrusion die for composite production as recited in claim 1, wherein the supporting portion is a guide strip, a length direction of the guide strip and a length direction of the core die are identical, and the length is 10mm or more.
3. The pultrusion die for composite production as claimed in claim 2, characterized in that the guide strip is located outside the cavity entrance, the end of the guide strip with the smallest cross section is at a distance of 0-300mm from the cavity entrance, and the cross section of the end of the guide strip with the smallest cross section is zero or greater than zero.
4. The pultrusion die for composite production as recited in claim 1, characterized in that an auxiliary supporting means for auxiliary support or fixation of the core die is further provided, the supporting means being provided between the auxiliary supporting means and the entrance of the cavity.
5. The pultrusion die for composite production as claimed in claim 2, characterized in that more than two core dies are provided and a spacer bar is provided between the core dies, the length of the spacer bar being 10mm or more.
6. The pultrusion die for composite production as claimed in claim 5, characterized in that the cross section of the spacer bars tapers in the direction of travel of the fibers.
7. The pultrusion die for composite production as claimed in claim 6, characterized in that the cross section of the side of the spacer bar close to the entrance of the cavity is zero or greater than zero.
8. The pultrusion die for composite production as claimed in any of claims 5 to 7, characterized in that the spacer bars are connected to the core die or are manufactured in one piece.
9. The pultrusion die for producing composite materials as claimed in claim 2, further comprising a glue injection box, wherein the glue injection box comprises a passage, the passage comprises a glue injection box feed inlet and a glue injection box discharge outlet, the glue injection box discharge outlet is spaced from the cavity inlet, or the glue injection box and the forming die are connected with each other or hermetically connected with each other or integrally manufactured, and the part of the core die outside the cavity penetrates through the passage.
10. The pultrusion die for producing composite materials as claimed in claim 6, further comprising a glue injection box, wherein the glue injection box comprises a passage, the passage comprises a glue injection box feed inlet and a glue injection box discharge outlet, the glue injection box discharge outlet is spaced from the cavity inlet, or the glue injection box and the forming die are connected with each other or hermetically connected with each other or integrally manufactured, and the part of the core die outside the cavity penetrates through the passage.
11. The pultrusion die for composite production as claimed in claim 9, characterized in that a part or all of the guide strips are arranged in the channels.
12. The pultrusion die for composite production as claimed in claim 10, characterized in that the guide strips are fixed to the channel and/or the core die or are manufactured in one piece with the channel and/or the core die.
13. The pultrusion die for composite production according to claim 10 or 11, characterized in that the guide strip extends continuously from one side of the feeding hole of the glue injection box towards one side of the discharging hole of the glue injection box, or the guide strip extends continuously from the feeding hole of the glue injection box to the discharging hole of the glue injection box, or extends out of the discharging hole of the glue injection box.
14. The pultrusion die for composite production as claimed in claim 10, characterized in that one or more or all of the guide strips, the core die, the spacer strips and the channels are slotted with runner channels perpendicular to the running direction of the fibers.
15. The pultrusion die for composite production as claimed in claim 10, wherein the area of the feeding port of the glue injection box is S1, the area of the discharging port of the glue injection box is S2, the cross-sectional area of the guide strip on the side of the feeding port of the glue injection box is S3, the cross-sectional area of the guide strip on the side of the discharging port of the glue injection box is S, n guide strips are arranged in the channel, n is greater than or equal to 1, and S2-nS is greater than or equal to S1-nS 3.
16. The pultrusion die for composite production as claimed in claim 14, wherein the area of the feed port of the glue injection box is S1, the area of the discharge port of the glue injection box is S2, the cross-sectional area of the spacer bars at one side of the feed port of the glue injection box is SJ3, the cross-sectional area of the spacer bars at one side of the discharge port of the glue injection box is SJ4, m spacer bars are arranged in the channels, m is greater than or equal to 1, and S2-mSJ4 is greater than or equal to S1-mSJ 3.
17. The pultrusion die for composite production as claimed in claim 15, characterized in that n guide strips are arranged in the channel, and n is greater than or equal to 1, and satisfies S2-mSJ4-nS4 ≤ S1-mSJ3-nS 3.
18. A fiber-reinforced composite having a cavity, characterized by: produced using a pultrusion die for composite production as claimed in any of claims 1 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920702918.9U CN211416367U (en) | 2019-05-15 | 2019-05-15 | Pultrusion mould for composite material production and fiber reinforced composite material with cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920702918.9U CN211416367U (en) | 2019-05-15 | 2019-05-15 | Pultrusion mould for composite material production and fiber reinforced composite material with cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211416367U true CN211416367U (en) | 2020-09-04 |
Family
ID=72284463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920702918.9U Active CN211416367U (en) | 2019-05-15 | 2019-05-15 | Pultrusion mould for composite material production and fiber reinforced composite material with cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211416367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142987A (en) * | 2019-05-15 | 2019-08-20 | 湖州守真新材料科技有限公司 | A kind of pultrusion die for Material cladding |
-
2019
- 2019-05-15 CN CN201920702918.9U patent/CN211416367U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142987A (en) * | 2019-05-15 | 2019-08-20 | 湖州守真新材料科技有限公司 | A kind of pultrusion die for Material cladding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3993726A (en) | Methods of making continuous length reinforced plastic articles | |
| US5073413A (en) | Method and apparatus for wetting fiber reinforcements with matrix materials in the pultrusion process using continuous in-line degassing | |
| JP2802430B2 (en) | Molding method | |
| US5876641A (en) | In-line process for injection of foam material into a composite profile | |
| KR101776383B1 (en) | Manufacturing apparatus for composite reinforcement structure and manufacturing method for the same | |
| CN211416367U (en) | Pultrusion mould for composite material production and fiber reinforced composite material with cavity | |
| CN1970279A (en) | A novel pultrude process and product thereof | |
| CN111923450A (en) | Pultrusion method of thin-wall component | |
| CN211000064U (en) | A prevent blockking up pultrusion mould and pultrusion production facility for combined material | |
| US4393024A (en) | Method of producing a racket frame | |
| CN216914916U (en) | Pultrusion workpiece production equipment and pultrusion workpiece | |
| CN114434833A (en) | Pultrusion method of multi-cavity precast core mould | |
| CN211993772U (en) | Two chamber forming die of battery package HP-RTM | |
| CN211640912U (en) | Door leaf shaping extrusion tooling | |
| CN214137417U (en) | Static infiltration device for rapid pultrusion of composite material | |
| CN109693401B (en) | Composite material pultrusion die, forming equipment and method thereof, profile and application thereof | |
| CN110142987A (en) | A kind of pultrusion die for Material cladding | |
| CN207842095U (en) | Composite material drawing and extruding mold, former and proximate matter and its application | |
| KR19990029350A (en) | Manufacturing method and apparatus for fiber reinforced foam molding | |
| CN112536944A (en) | Two chamber forming die of battery package HP-RTM | |
| EP2699409B1 (en) | Pultrusion apparatus with fiber guides | |
| CN115091788B (en) | Method suitable for compensating pulling and extruding process of photovoltaic fiber reinforced composite frame | |
| CN115071172B (en) | Multilayer pultrusion production line suitable for photovoltaic fiber composite frame and production method | |
| KR100697631B1 (en) | Method and apparatus for manufacturing the variable section having products of fiber reinforced and thermosetting resin | |
| CN115071171B (en) | Multilayer pultrusion device and method suitable for photovoltaic fiber reinforced composite frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |