CN210563366U - Composite hollow latticed flat plate - Google Patents

Abstract

The utility model provides a compound cavity latticed flat board, the enhancement layer adopts continuous fibers to strengthen it, makes inside its embedding template through pultrusion process, makes its melting be whole, promotes and produces the property ability. Make under the condition of the same sectional area, compare in prior art, the utility model discloses an intensity is higher. Under the condition of guaranteeing the strength is unanimous, the utility model discloses a sectional area is littleer, thereby makes the utility model discloses a weight can alleviate. The reinforced layer is reinforced by adopting continuous fibers, so that the bending modulus is greatly improved, the impact resistance is effectively improved, the resilience is greatly improved, and the service life is prolonged.

Description

Composite hollow latticed flat plate

Technical Field

The utility model relates to a building templates field, especially a compound cavity latticed flat board.

Background

The flat board of former building use mainly has wooden formwork, plywood, covers and moulds the template class, and main problematic is that life is on the low side, generally is 3 ~ 5 times, except that product self weight is heavy, and easily absorbs water, leads to the cement to pour the back and absorb water, and the inflation finally causes the product weight to aggravate, surface fracture, and the swell directly influences life, installation effectiveness and use cost.

The existing plastic-coated template cannot use continuous long fibers when the template is produced due to the adoption of an injection molding production process, the strength of a product is directly influenced by the length of the fibers, and the longest fiber length is 1-2 cm due to the fact that the ordinary hollow building template is meshed with screws during production and has a shearing effect on glass fibers, so that the longest fiber length cannot be 1-2 cm, the long fiber length cannot be paved along the length or the width of the template, and the sectional area of the product needs to be increased to improve the strength of the product.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a compound cavity latticed flat board, adopts the cavity form in order to alleviate product weight, uses the continuity long fiber to carry out the face simultaneously and strengthens. The weight is lower than that of a wood template, and the wood template has the characteristics of no water absorption, no shrinkage, long service life, good forming effect and the like.

The utility model discloses a realize like this: a composite hollow latticed flat plate comprises a plastic filling layer, a reinforcing layer and a plastic surface layer; the surface of the plastic filling layer is a plane, and the interior of the plastic filling layer is a hollow latticed structure; the reinforcing layer comprises a base layer, and a plurality of continuous fibers are arranged on the base layer; the upper surface and the lower surface of the plastic filling layer are symmetrically provided with the reinforcing layers; the plastic surface layer covers the reinforcing layer and the plastic filling layer to form a whole.

Further, the hollow lattice structure is a rectangular lattice, a triangular lattice, or a honeycomb lattice.

Furthermore, the hollow latticed structure is a latticed structure with common adjacent sides, and two sides of the latticed structure in the stress direction are arc-shaped, semi-elliptical or semicircular.

Furthermore, the plurality of continuous fibers on the base layer are arranged transversely and longitudinally.

Further, the reinforcing layer is a continuous glass fiber prepreg tape.

The utility model has the advantages of as follows:

(1) the enhancement layer adopt continuous fibers to strengthen the enhancement layer, and the enhancement layer is fused into a whole by using a composite process to embed the enhancement layer into the template, so that the product performance is improved. Make under the condition of the same sectional area, compare in prior art, the utility model discloses an intensity is higher. Under the condition of guaranteeing the strength is unanimous, the utility model discloses a sectional area is littleer, thereby makes the utility model discloses a weight can alleviate.

(2) The enhancement layer adopts the continuity fibre to strengthen, and firstly, flexural modulus promotes by a wide margin, and secondly, effectively increases its shock resistance, and thirdly, the resilience improves by a wide margin, and fourthly, improves life.

(3) And the filling layer adopts hollow structure, compares and adopts solid core among the prior art, and weight is lighter.

(4) Compound cavity latticed dull and stereotyped adopt the plastic to make, compare in current wooden model, be difficult for absorbing water, inflation, the difficult fracture in surface, swell to promote life and promote the roughness of pouring back concrete surface, improve quality.

(5) The composite hollow latticed flat plate is made of plastic, can be repeatedly recycled, and has a recycling residual value superior to that of a wood template.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

Fig. 1 is a front view of a composite hollow lattice-like flat plate according to the present invention.

Fig. 2 is a side view of a composite hollow cellular panel according to the present invention.

Fig. 3 is a top view of a composite hollow grid plate according to the present invention.

Fig. 4 is a partially enlarged schematic view a of fig. 2.

Fig. 5 is a partially enlarged schematic view B of fig. 2.

Fig. 6 to 8 are size diagrams of an embodiment of the composite hollow lattice-like flat plate according to the present invention.

Fig. 9 is a first embodiment of the arrangement of the continuous fibers according to the present invention.

Fig. 10 shows a second embodiment of the arrangement of the continuous fibers according to the present invention.

Fig. 11 is a schematic view of a second hollow lattice embodiment of the present invention.

Fig. 12 is a schematic view of a third hollow lattice embodiment of the present invention.

Fig. 13 is a front view of a production line of the manufacturing method of the present invention.

Fig. 14 is a top view of fig. 11.

Fig. 15 is a flow chart of a manufacturing method according to the present invention.

Fig. 16 is a schematic cross-sectional view of the extrusion die head for plastic filler layer of the present invention.

Fig. 17 is a schematic structural view of the shaping mold for the plastic filling layer of the present invention.

Fig. 18 is a schematic top view of the coating die of the present invention.

Fig. 19 is a schematic front view of the coating mold of the present invention.

Fig. 20 is a schematic sectional view of the coating die of the present invention.

Fig. 21 is a schematic structural view of a second shaping mold for the plastic filling layer of the present invention.

Fig. 22 is a schematic view of a hollow grid according to a fourth embodiment of the present invention.

In the figure: 100. a composite hollow latticed flat plate, 110, a plastic surface layer, 120, a reinforcing layer, 121, a base layer, 122, continuous fibers, 130 and a plastic filling layer; 131. hollow lattices 1311, two sides of the lattices in the direction of stress;

1. a single screw extruder, 2, a hydraulic screen changer, 3, an extrusion die head, 31, a die outer frame, 32, a forming insert, 33, a blowing hole, 34, a filling layer forming cavity, 4, a forming die, 41, a cooling upper die, 42, a cooling lower die, 43, a cooling left die, 44, a cooling right die, 45, a forming cavity, 5, a forming device, 5, a traction machine, 7, a first unreeling frame, 8, a second unreeling frame, 9, an unreeling platform, 10, a three-channel oven, 11, a two-roller attaching device, 12, a double screw extruder, 13, a second hydraulic screen changer, 14, a coating die, 141, a guiding device, 142, a die body, 1421, a forming cavity, 15, a second forming die, 151, a cooling upper die, 152, a cooling lower die, 153, a cooling left die, 154, a cooling right die, 155, a forming cavity, 16, a second forming device, 17, a second traction machine, 18. a cutting machine 19, a longitudinal conveying device 20 and a transverse conveying device;

d1, width of the composite hollow latticed flat plate, D2, length of the composite hollow latticed flat plate, thickness of D3, thickness of the composite hollow latticed flat plate, thickness of D4, reinforcing layer, thickness of D5, thickness of the plastic surface layer on one side, width of D6, hollow latticed shape, thickness of D7, plastic filling layer on one side, thickness of D8, surface of the plastic filling layer, thickness of D9, plastic surface layer on the other side, thickness of D10, thickness of the plastic filling layer on the other side, and length of D11, hollow latticed shape.

Detailed Description

Referring to fig. 1 to 22, the present invention provides a composite hollow grid-shaped flat plate 100, which includes a plastic filling layer 130, a reinforcing layer 120 and a plastic surface layer 110; the surface of the plastic filling layer 130 is a plane, and the interior is a hollow latticed structure; the reinforcing layer 120 comprises a base layer 121, and a plurality of continuous fibers 122 are arranged on the base layer 121; the upper and lower surfaces of the plastic filling layer 130 are symmetrically provided with the reinforcing layer 120; the plastic surface layer 110 covers the reinforcing layer 120 and the plastic filling layer 130 to form a whole.

The reinforcing layer 120 adopts the continuous fibers 122 to reinforce the reinforcing layer, for example, the reinforcing layer can be manufactured through a composite process, so that the reinforcing layer is embedded into the template, the reinforcing layer is melted into a whole, and the performance of the product is improved. Compared with the prior art, the short fiber sections are not full-length fibers but short fiber sections with the length of 1-2 cm, and the short fiber sections are mixed with plastic particles during manufacturing and are integrally molded, so that the short fibers in the existing template are not in the same plane but are disorderly, and the increased strength is not in the stress direction of the template in all directions, so that the strength increasing effect is limited. The continuous fibers 122 of the present invention are of a full length and are arranged more neatly, so that the strength of the continuous fibers in the stress direction of the template is higher. Under the condition of guaranteeing the strength is unanimous, the utility model discloses a sectional area is littleer, thereby makes the utility model discloses a weight can alleviate.

On the other hand, the reinforcing layer 120 is reinforced by the continuous fibers 122, so that the flexural modulus is greatly improved, the impact resistance is effectively improved, the resilience is greatly improved, and the service life is prolonged.

Filling layer 130 adopts hollow structure, compares and adopts solid core among the prior art, and weight is lighter.

Compound cavity latticed dull and stereotyped 100 adopt the plastic to make, compare in current wooden model, be difficult for absorbing water, inflation, the difficult fracture in surface, swell to promote life and promote the roughness of pouring back concrete surface, improve quality. In a preferred embodiment, the plastic surface layer 110 may be made of flame retardant and wear resistant plastic, which may increase the wear resistance and flame retardancy of the composite hollow grid panel 100, and improve the fire resistance. The plastic facing layer 110 may also be made of abrasion resistant plastic, and then added with existing flame retardant.

The composite hollow latticed flat plate 100 is made of plastic, can be repeatedly recycled, and has a recycling residual value superior to that of a wood template. The wood mould can only be discarded, and the wood mould is stuck with concrete, so that the wood mould is inconvenient to take and burn even when the wood mould is taken.

For example, the plastic filler layer 130 can be made of pure resin, resin with glass fiber, resin with mineral filler, etc. The reinforcing layer 120 may be made of a composite reinforcing material such as a continuous fiber mat, a glass fiber unidirectional tape, or the like. The plastic surface layer can be made of wear-resistant, anti-skid, acid-base resistant or flame-retardant materials.

The hollow lattice 131 structure is a rectangular lattice 131, a triangular lattice 131, or a honeycomb lattice 131. In other embodiments, it may be manufactured in other shapes, such as other polygonal shapes or profiled structures. In the embodiment shown in fig. 1-4, is a rectangular lattice 131. The second embodiment shown in fig. 11 is a schematic view of a honeycomb-shaped lattice 131.

The hollow latticed structure 131 is a latticed structure with common adjacent sides, two sides of the latticed structure in the stress direction are arc-shaped, semi-elliptical or semicircular, namely, the corresponding hollow latticed structure is an elliptical latticed structure. In the third embodiment shown in fig. 12, which is an embodiment of a structural schematic diagram of an oval lattice, the two sides of the lattice in the force-receiving direction are labeled as 1311.

As shown in fig. 4, the hollow lattice structure may be two layers, or three layers as shown in fig. 22, or may be one layer or another number of layers in other embodiments, and may be set according to the strength requirement.

Complex root on the basic unit 121 continuous fibers 122 is violently indulges the range, adopts violently indulge the range then need not to distinguish length or width direction in the use, and prior art is because it adopts short fibre section to make then need distinguish the direction of length and width in the use, like this the utility model discloses undoubtedly more facilitate the use. In other embodiments, the continuous fibers 122 may be arranged in other ways, such as crossing obliquely in a plane, triangular in a plane, other polygonal shapes, or a profiled arrangement.

The reinforcing layer 120 is a continuous glass fiber prepreg tape 120, is an existing material, can be purchased directly on the market, and is convenient to take out.

In an embodiment, the method for manufacturing the composite hollow latticed flat plate 100 of the present invention comprises the following steps:

the production line of the manufacturing method comprises a single-screw extruder 1, a hydraulic screen changer 2, an extrusion die head 3, a sizing die 4, a sizing device 5, a tractor 6, two first unreeling frames 7, two second unreeling frames 8, an unreeling platform 9, a three-channel oven 10, a two-roller laminating device 11, a double-screw extruder 12, a second hydraulic screen changer 13, a coating die 14, a second sizing die 15, a second sizing device 16, a second tractor 17, a cutting machine 18, a longitudinal conveying device 19 and a transverse conveying device 20;

step S1, extruding the plastic filling layer 130 through the single-screw extruder 1, installing the hydraulic screen changer 2 at the extrusion outlet of the single-screw extruder 1, filtering impurities of the plastic raw material, installing the plastic filling layer 130 extrusion die head 3 at the outlet of the hydraulic screen changer 2, and forming the shape of the filling layer 130 through the extrusion die head 3; as shown in fig. 16, the extrusion die head 3 includes a die outer frame 31 and a forming insert 32 inserted into the die outer frame 31 according to the prior art, and molten plastic material is introduced into a filling layer forming cavity 34 between the die outer frame 31 and the forming insert 32 through a flow passage, thereby forming a plastic filling layer 130. In a preferred embodiment, each forming insert 32 may further be provided with a blowing hole 33, the blowing hole 33 is communicated with the forming cavity, and the blowing hole 33 is connected to a blowing system (not shown); the blowing system blows air into the blowing holes 33 and blows the melted raw material to the molding cavity, so that the hollow latticed molding effect of the plastic filling layer 130 is better.

Step S2, arranging a shaping mold 4 behind the outlet of the extrusion die head 3, and shaping the just extruded plastic filling layer 130 through the shaping mold 4 to prevent the plastic filling layer 130 from deforming to influence the quality of a finished product in the later period; the shaping mold 4 is arranged on the shaping device 5, so that the shaping mold 4 and the extrusion die head 3 are positioned on the same horizontal plane, and the plastic filling layer 130 extruded from the extrusion die head 3 can be smoothly transited to the shaping mold 4 and is kept flat without bending; the shaping device 5 is used as a support frame, and in the specific implementation, for example, a table can be used, and in order to improve the use safety, a table made of iron or steel can also be used. As shown in fig. 17, the shaping mold 4 includes a split cooling upper mold 41, a cooling lower mold 42, a cooling left mold 43, a cooling right mold 44, and a shaping cavity 45, wherein the cooling shaping mold is provided with an air suction hole (not shown), is communicated with the shaping cavity 45, and is connected to a vacuum pump for vacuum-absorbing the uncooled shaped product. The inside preparation water route of design mould to connect the cold water machine, cool off uncooled design product, the cooling principle is that the plastic filling layer passes through heat-conduction, gives design mould with heat transfer, takes away the heat through cooling water circulative cooling design mould 4 to cool off the plastic filling layer 130 in the design cavity 45. The four cooling shaping dies can be opened and closed, the assembly and the use are convenient, and in the specific implementation, the four cooling shaping dies can be connected and fixed by bolts, so that the operation is convenient.

Step S3, a tractor 6 is provided behind the sizing die 4, for example, a ten-roll tractor is used, and the drawing is carried out to the subsequent process by the tractor 6. Two layers of unreeling platforms 9 are arranged behind the tractor 6, each layer of unreeling platform 9 comprises two unreeling frames, each unreeling frame is provided with a reel of the reinforcing layer 120, the reinforcing layer 120 is made of continuous glass fiber prepreg tapes 120, the upper and lower layers of the reinforcing layer 120 correspond to the upper and lower surfaces of the plastic filling layer 130, two unwinding frames are arranged on each layer of unwinding platform 9, the lower layer is two first unwinding frames 7, the upper layer is two second unwinding frames 8, one of the layers is used as a spare for ensuring continuous generation, that is, when the continuous glass fiber prepreg tape 120 of one unreeling rack is used up, the continuous glass fiber prepreg tape 120 of the other unreeling rack is directly connected to be used without stopping the machine to wait for replacing materials of the empty unreeling rack, the spent unwind stand may then be replaced with a new continuous fiberglass prepreg tape 120 after the splice is completed. And the plastic filling layer 130 from the tractor 6 passes through the middle vacant position of the upper and lower unwinding platforms to the subsequent process. A three-channel oven 10 is arranged behind the unreeling platform 9; the plastic filling layer coming out of the tractor 6 enters the middle inlet of the three-channel oven 10, and on the unreeling frames of the upper layer and the lower layer, one continuous glass fiber prepreg tape 120 is correspondingly dragged to the upper inlet and the lower inlet;

step S4, operating the three-channel oven 10, and heating the continuous glass fiber prepreg tapes 120 on the upper layer and the lower layer and the plastic filling layer 130 in the middle layer through the three-channel oven 10, wherein the heating temperature is 150-200 ℃; the two-roller laminating device 11 is arranged behind the three-channel oven 10 for softening the glass fibers, the upper and lower continuous glass fiber prepreg tapes 120 and the middle plastic filling layer 130 after being heated and softened in the three-channel oven 10 are drawn to the two-roller laminating device 11 for rolling into a whole, and the pressure of the two-roller laminating device 11 is as follows: 0.1-0.6 mpa, so as to realize pre-bonding, and marking as a pre-bonded semi-finished product;

step S5, extruding the plastic surface layer 110 through a double-screw extruder 12, wherein the double-screw extruder 12 adopts a 72-building-block double-screw extruder 12, a second hydraulic screen changer 13 is installed at the outlet of the double-screw extruder 12, impurities of the raw materials are filtered through the second hydraulic screen changer 13, and then the plastic surface layer 110 is extruded; the double screw extruder 12 and the single screw extruder 1 are arranged transversely and longitudinally,

a coating die 14 is arranged behind the second hydraulic screen changer 13, the coating die 14 is arranged at the cross point of the transverse and longitudinal axes of the double-screw extruder 12 and the single-screw extruder 1, the pre-bonded reinforcing layer 120 and the plastic filling layer 130 enter the coating die 14 from the transverse direction, the plastic surface layer 110 enters the coating die 14 from the longitudinal direction, and the plastic surface layer 110 is coated outside the pre-bonded reinforcing layer 120 and the plastic filling layer 130 through the coating die; in the actual production, the time can be calculated, for example, because the processes of manufacturing the pre-bonded reinforcing layer 120 and the plastic filler layer 130 are too long, when the production is started, the production can be performed for a period of time first, and then the production of the plastic surface layer 110 is started, so that finally the plastic surface layer 110 and the pre-bonded semi-finished product enter the coating mold 14 at the same time, and because the plastic surface layer 14 has residual heat just after the manufacturing and is not shaped, and the pre-bonded semi-finished product is also rolled and bonded and has residual heat and is not shaped, the two are not required to be heated in the coating process, and the coating can be performed therebetween;

of course, it should be noted here that, since the just pre-bonded semi-finished product and the just extruded plastic surface layer 110 both have residual heat and are in a softened state, the coating process can be performed by directly using these characteristics, which also reduces energy consumption, but in other embodiments, the coating and forming mold can be separated, and the plastic surface layer needs to be heated and softened again, and energy consumption is needed to re-heat, which causes unnecessary waste; the coating mold 14 serves as a molding mold for the plastic surface layer 110 and also serves as a mold for coating the pre-bonded semi-finished product with the plastic surface layer 110, thereby having two functions.

As shown in fig. 18-20, the overmold 14 includes a mold body 142, the mold body 142 having a molding cavity 1421 and a trapezoidal shaped entrance 1422; the pre-bonded semi-finished product enters the molding cavity 1421 through the trapezoidal inlet 1422, the melted plastic surface layer 110 extruded from the twin-screw extruder 12 enters the molding cavity 1421 through the runner (not shown) of the coating mold 14 to coat the pre-bonded semi-finished product, and the plastic surface layer 110 is molded through the molding cavity 1421, so that the coating and molding are performed while saving time and energy, and the steps of molding the plastic surface layer 110 first and then additionally adding the thermoplastic surface layer 11 are not required. The runner (not shown) is only required to be communicated with the outlet of the twin-screw extruder 12 in an airtight manner, and the outlet of the runner is communicated with the molding cavity 1421, and the runner is not required to be specially arranged according to the existing pultrusion die technology. In a specific implementation, guiding devices 141, such as guiding wheels 141 or guiding rollers 141, may also be provided on both sides of the trapezoidal inlet 1422 to guide the pre-glued semi-finished product.

Step S6, the second shaping mold 15 is arranged behind the covering mold 14, the second shaping mold 15 is erected on the second shaping device 16, a second tractor 17 is arranged behind the second shaping mold 15, the second tractor 17 also adopts a ten-roller tractor, and a cutting machine 18 is arranged behind the second tractor 17; after coating, the product enters a second shaping die 15 at the rear part for shaping, after shaping is finished, the product is pulled to a cutting machine 18 through a second tractor 17, and the product is cut into templates with various lengths according to requirements to obtain a final finished product. The second fixing device 16 is used as a support frame, and an existing table can be used, and an iron or steel table can be used for improving safety.

As shown in fig. 21, the second shaping mold 15 has the same structure as the shaping mold 4, the second shaping mold 15 also includes an upper cooling mold 151, a lower cooling mold 152, a left cooling mold 153, a right cooling mold 154, and a shaping cavity 155, and the second shaping mold 15 is also provided with an air suction hole (not shown) which is communicated with the shaping cavity 155 and connected to a vacuum pump for vacuum suction of the uncooled shaped product. The inside preparation water route of second cooling design mould 15 to connect the cold water machine, cool off not cooling design product, the cooling principle is that the product passes through heat-conduction, gives second design mould 15 with heat transfer, takes away the heat through cooling water circulative cooling design mould 15 to cool off the product in the design cavity 155. The four cooling shaping dies can be opened and closed, the assembly and the use are convenient, and in the specific implementation, the four cooling shaping dies can be connected and fixed by bolts, so that the operation is convenient.

Finally, a conveying device can be arranged to convey the final finished product away, for example, in a specific embodiment, a longitudinal conveying device 19 and a transverse conveying device 20 are respectively arranged behind the cutting machine 18, so that the finished product can be conveniently placed at the rear part through two-direction conveying, and more time is provided for placing the finished product. Of course in other embodiments, a transverse or longitudinal transport device may also be provided separately. Of course, a conveying device is not needed, and workers can directly take out and place finished products after the cutting of the cutting machine is finished.

In one embodiment, the specification of a composite hollow grid panel 100 is: d1-915 mm, D2-183 mm, D3-15 mm, D4-0.8 mm, D5-1.2 mm, D6-5 mm, D7-1 mm, D8-0.6 mm, D9-1.2 mm, D10-1 mm, D11-7.485 mm. Of course, in other embodiments, D1-D11 may have other dimensions and may be made symmetrical.

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims (5)

1. A composite hollow latticed slab, characterized in that: comprises a plastic filling layer, a reinforcing layer and a plastic surface layer; the surface of the plastic filling layer is a plane, and the interior of the plastic filling layer is a hollow latticed structure; the reinforcing layer comprises a base layer, and a plurality of continuous fibers are arranged on the base layer; the upper surface and the lower surface of the plastic filling layer are symmetrically provided with the reinforcing layers; the plastic surface layer covers the reinforcing layer and the plastic filling layer to form a whole.

2. A composite hollow grid panel according to claim 1, wherein: the hollow latticed structure is a rectangular lattice, a triangular lattice or a honeycomb lattice.

3. A composite hollow grid panel according to claim 1, wherein: the hollow latticed structure is a latticed structure with common adjacent sides, and two sides of the latticed structure in the stress direction are arc-shaped, semi-elliptical or semicircular.

4. A composite hollow grid panel according to claim 1, wherein: the plurality of continuous fibers on the base layer are arranged transversely and longitudinally.

5. A composite hollow grid panel according to claim 1, wherein: the reinforcing layer is a continuous glass fiber prepreg tape.

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