CN216867199U - Fiber reinforced plastic profile capable of being welded in hot melting mode and assembly thereof - Google Patents

Abstract

The utility model discloses a fiber reinforced plastic profile capable of being welded in a hot melting way and a component thereof. The fiber reinforced plastic profile component capable of being welded in a hot melting mode comprises a connecting pipe and the fiber reinforced plastic profile capable of being welded in the hot melting mode, wherein the connecting pipe is used for being inserted into the rib pipe. According to the utility model, the two ends of the connecting pipe are respectively in hot-melt welding with the rib pipes in the two main bodies, so that hot-melt connection of the butt joint surfaces containing fibers is avoided, and the connection is firmer and more reliable.

Description

Fiber reinforced plastic profile capable of being welded in hot melting mode and assembly thereof

Technical Field

The utility model relates to the technical field of composite plastic profile welding, in particular to a fiber reinforced plastic profile capable of being welded in a hot melting mode and a component thereof.

Background

At present, in the fiber plastic composite section bar in the industry, when the common composite section bar is combined and assembled, one side surfaces of the section bar, which are contacted with each other, are heated by using a heating plate, and then the heated and melted side surfaces of the two section bars are butted to realize hot melting welding. However, for a composite section bar which is finally manufactured by embedding and co-extruding or multi-layer winding and co-extruding glass fibers, carbon fibers and the like and is compounded with other fiber reinforced materials in a plastic main material, when the composite section bar is heated and melted by a heating plate, the butt joint surface is heated due to different properties of the fiber materials and a plastic main material and different melting temperatures and flowability, so that the plastic flows away from the butt joint surface and the fiber materials are stacked and folded, an effective welding surface is only a small amount of plastic, the welding position is very fragile, and an effective welding layer cannot be formed. At present, other connecting modes such as surface welding of the section bar with the plastic layer on the outer surface are used, the strength of the connecting position is still limited, and the connecting position is a pain point of the product. At present, no fiber plastic composite section product capable of solving the welding problem exists in the industry.

There is a springboard for a fish raft, the material of the upper layer board, the material of the lower layer board and the material of the connecting board are the same. All be equipped with continuous reinforcing fiber on upper and lower plywood and the connecting plate, this continuous reinforcing fiber's both ends extend to the corresponding end that corresponds the plate body respectively. The whole upper plate face an organic whole of upper plate is provided with an anti-skidding layer, and this anti-skidding layer is quartz sand layer, diamond sand layer, cinder layer or the stone sublayer of honour. The upper plate and the lower plate of the plastic gangplank are of an integral structure through the connecting plates, the strength is high, the PE, PP or PVC is adopted, the structure is light, the structural strength and the fatigue resistance are further enhanced after continuous reinforcing fibers are embedded in the plate body, the service performance of the plastic gangplank is improved, and the defect of poor fatigue resistance of the plastic gangplank for the fishing raft is effectively overcome. And this springboard has add the skid resistant course on the top surface of the upper plate, and this skid resistant course is quartz sand layer, diamond sand layer, cinder layer or the stone sublayer, so both convenient to draw materials and make, has good non-skid property again.

However, in the above scheme, the upper plate, the lower plate and the connecting plate are provided with the reinforcing fibers, and the anti-slip layer consisting of the quartz sand layer or the diamond sand layer, the cinder layer and the stone layer is additionally arranged on the top surface of the upper plate, so that the gangway is not suitable for hot welding. When the springboard is connected by other means, for example, two fish raft are connected by using the metal sheet and the screw, after the connection mode is used for a long time, the connection part between the screw and the fish raft is loosened, the metal sheet and the screw are easy to oxidize, particularly, the use scene of the fish raft is special, and the metal is easy to corrode by seawater.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defect of low hot-melt welding strength of a fiber reinforced plastic profile component in the prior art, and provides the fiber reinforced plastic profile component. According to the utility model, the two ends of the connecting pipe are respectively in hot-melt welding with the rib pipes in the two main bodies, so that hot-melt connection of the butt joint surfaces containing fibers is avoided, and the connection is firmer and more reliable.

The purpose of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a but hot melt welding's fiber reinforced plastic section, includes inside hollow main part, the inside a plurality of rib pipes that are parallel to each other that are equipped with of main part, the rib pipe is located the both sides of main part, the main part is close to the side of rib pipe terminal surface is the butt joint face, the butt joint face is used for connecting between two main parts.

The inside rib pipe that is equipped with of main part can be through the plug connector that cross sectional shape and rib pipe match, with the even section of plug connector insert respectively establish the rib pipe of two main parts in with rib pipe hot melt be connected, be connected through rib pipe in the main part and plug connector like this, avoid carrying out the hot melt to the butt joint face that contains the fibrous layer, but carry out the hot melt to the inside wall of rib pipe and the lateral wall of plug connector, the standard tubular product that the plug connector can convenient to use purchase, and the main part during manufacturing, the size of rib pipe matches with standard tubular product, guarantees that the rib pipe can carry out the hot melt with standard tubular product and be connected.

Further, the main part includes hollow inlayer, twines the complex fiber layer on the inlayer outer wall, and locates the skin on the complex fiber layer outer wall.

The composite fiber layer can be made of glass fiber, carbon fiber and other reinforced fiber materials, can be extruded together with the inner layer and the outer layer, or can be extruded out of the inner layer of the main body and the ribbed pipe in the inner layer, then the fiber materials are wound around the outer wall of the inner layer in a circle, and finally the outer layer of the main body is extruded out. The inner layer and the outer layer are made of plastic main materials of sectional materials, the materials can be PP, PE, PVC and the like, and the composite fiber layer can greatly improve the mechanical properties of the main body such as strength and the like. The composite fiber layer is clamped between the inner layer and the outer layer, the composite fiber layer is exposed at the section of the plate consisting of the inner layer, the composite fiber layer and the outer layer, and if the side face of the host machine is heated by using a traditional hot-melt welding method, the welding position is unreliable due to fiber stacking in the composite fiber layer, so that the composite fiber layer needs to be avoided in the welding process. When the inner side wall of the ribbed pipe is heated and melted, only the surface of the inner side wall of the ribbed pipe is melted, and a composite fiber layer is not involved, so that after the main bodies are connected by using the plug connectors, gaps of butt joint surfaces between the main bodies can be bonded by glue, a heating rod can be placed at the joint between the main bodies to be heated and melted and connected with the outer layer, the auxiliary connection effect can be achieved, the composite fiber layer is not influenced, other connection modes or the gaps between the main bodies which are not influenced can be used for sealing, and the implementation of the scheme is not influenced.

Furthermore, at least one outer surface of the main body is also provided with a surface coating layer for skid resistance, and the surface coating layer is provided with skid-proof patterns.

The outer surface of the main body can be provided with a surface covering layer according to requirements, the surface covering layer can be set to be a required color, and the anti-skid patterns can also be set according to requirements. The surface covering may be provided on one or more faces of the body.

Furthermore, the material of the surface coating is thermoplastic plastics.

In this scheme, carry out the hot melt welding back through the plug connector between the main part, the direct butt joint face of main part has certain gap, can heat the melting welding through near surface coating in gap, only welds surface coating like this, can avoid heating the composite fiber layer. And if the main bodies are connected only through the surface coating layer, the connection strength is not sufficient, but after the main bodies are subjected to the hot-melt welding through the plug connectors, the connection of the surface coating layer can play a role in assisting the enhancement of the gap between the connected main bodies.

Furthermore, the anti-slip patterns are a plurality of parallel grooves formed in the surface of the main body, and the axes of the grooves are parallel to the axes of the rib pipes.

When carrying out the hot melt to the surface cladding layer like this, the plastics after melting can flow in the recess, avoid the butt fusion seam arch, cause harmful effects when influencing outward appearance and using.

A hot-weldable fibre-reinforced plastic profile assembly comprising a connecting tube and a hot-weldable fibre-reinforced plastic profile as described above, the connecting tube being for insertion in the ribbed tube.

According to the utility model, the hollow ribbed tube is arranged in the main body, and when the two main bodies are spliced, the connecting tube is used for hot melting and inserting the two main bodies into the ribbed tube of the other main body, so that the two main bodies are connected together. The plug-in connector in the scheme is a connecting pipe. Need not carry out the hot melt to the butt joint face of the main part that contains the fibrous layer like this, but heat the melting and then weld rib pipe and connecting pipe in the main part, thereby avoid containing the one side direct heating of fibrous layer with the main part and lead to the fibre to pile up mixing and make the seam fragile unreliable. When the section bar is subjected to hot melting welding, the welding device is used for heating the inner side wall of one end of the rib pipe in one main body and the outer side wall of one end of the connecting pipe, then one end of the heated connecting pipe is inserted into the heated rib pipe, the rib pipe and the connecting pipe can be connected together after plastics are cooled, and then the outer side wall of the other end of the connecting pipe of the welding device and the inner side wall of one end of the rib pipe in the other main body are used for heating and then are spliced and cooled. Like this, just can be through connecting pipe both ends respectively with main part hot melt welding, be in the same place two main part fixed connection, and, because it can set up many rib pipes in hot melt welding and a main part and supply the connecting pipe to connect to be between connecting pipe and the rib pipe, firm in connection reliability between the main part is high, simultaneously, connect two main parts through the connecting pipe, compare through sheetmetal and screw connection, can avoid sheetmetal and screw life time to take place the corrosion after than long and lead to the performance decline to appear fracture connection unreliable easily, also can avoid because the intensity and the hardness of metal and plastics, the difference of the nature of pliability etc., the junction between sheetmetal and screw and the main part can produce great gap along with the increase of live time gradually, lead to the connection between the main part to take place to become flexible.

Because the rib pipe only both ends are connected with the connecting pipe, so set up two sets of rib pipes of mutually perpendicular in the main part, every group all contains a plurality of rib pipes that are parallel to each other. In this way, the four sides of the main body can be connected with other main bodies through connecting pipes, and after the main body is formed into a required shape, the main body can be welded with the rib pipes through the connecting pipes with one sealed ends in a hot melting mode, so that the rib pipes exposed outside are sealed. The main body can also be provided with only one group of ribbed pipes, the ribbed pipes in the main body are all parallel to each other, and the main body can be spliced only along the axis of the ribbed pipes. The two bodies may be used in combination as desired.

Further, the connecting pipe is a multilayer composite pipe, and the multilayer composite pipe is a plastic layer, a fiber layer and a thermoplastic plastic layer from inside to outside in sequence.

The outermost layer of the connecting pipe is a thermoplastic layer, and the outermost layer of the connecting pipe is welded with the rib pipe after being heated and melted by using a welding device. The fiber layer of the connecting pipe is used for increasing the strength of the connecting pipe, the fiber layer at the joint between the two main bodies is broken, so that the strength of the joint is far lower than that of the main bodies, and the fiber layer is added on the connecting pipe, so that the continuous fiber layer is arranged at the joint between the two main bodies, and the strength and the reliability of the joint between the two main bodies are greatly increased.

Furthermore, the cross section of the rib pipe perpendicular to the axis of the rib pipe is rectangular, and the cross section of the connecting pipe perpendicular to the axis of the connecting pipe is rectangular matched with the rib pipe.

In order to reduce the weight, the inner part of the main body is hollow, the rib pipe is also used as a supporting and reinforcing structure in the inner part of the main body, and the inner part of the main body can be also provided with a reinforcing structure such as a reinforcing rib. The shape of the cross section of the rib pipe perpendicular to the axis of the rib pipe can be any shape of rectangle, circle, trapezoid and the like. In the scheme, the cross section of the ribbed tube is rectangular.

Furthermore, the cross sections of the rib pipes and the connecting pipes, which are perpendicular to the axes of the rib pipes and the connecting pipes, are circular.

The more common of the circular pipelines, the existing pipelines in the market can be directly used as connecting pipes, and the universality is stronger.

Further, the side surfaces of the main body on two sides of the axis of the rib pipe are mutually matched inclined surfaces.

The butt joint surfaces of the main bodies are inclined surfaces, when the two main bodies are spliced, the inclined surfaces of the two main bodies are overlapped up and down, the two inclined surfaces are forced to be attached more tightly by the weight of the main bodies and the weight born by the main bodies in use, if the butt joint surfaces are vertical planes, the two main bodies are easily separated to form a larger gap, and if the butt joint surfaces are the two inclined surfaces, the inclined surfaces are also attached up and down even if the two main bodies are separated from each other along the axial direction of the ribbed pipe.

The connecting piece is sleeved on the connecting pipe, a through hole for the connecting pipe to pass through is formed in the connecting piece, the connecting piece and the main body are perpendicular to the cross section of the axis of the rib pipe and are similar polygons, the cross section area of the connecting piece perpendicular to the axis of the rib pipe is not smaller than that of the main body perpendicular to the axis of the rib pipe, and the connecting piece is made of thermoplastic plastics.

The connecting piece is arranged between the butt joint surfaces of the two main bodies when the two main bodies are connected, and the connecting piece is provided with a through hole which can be sleeved on the connecting pipe. The connecting piece is made of thermoplastic plastics, can be heated and melted and is respectively in hot-melt welding with the butt joint surfaces of the two main bodies, so that the connecting piece serves as an adhesive for bonding the butt joint surfaces of the two main bodies. When the connecting piece is perpendicular to when the cross sectional area of the axis of the rib pipe is larger, the connecting piece is sleeved on the connecting pipe, the edge of the connecting piece is protruded relative to the main body, and after the connecting pipe and the two main bodies are respectively subjected to hot melting welding, the protruded edge of the connecting piece is heated and melted, so that the gap between the two main bodies can be filled after the connecting piece is melted, and the connection between the main bodies is further enhanced.

Compared with the prior art, the utility model has the beneficial effects that:

(1) through inside rib pipe and the connecting pipe that is parallel to each other in the main part, at the connecting pipe both ends respectively with the rib pipe hot melt welding in two main parts, avoid leading to fibrous piling up to the butt joint face heating of the main part that contains the composite fiber layer for connect more firmly reliably.

(2) Set up the composite fiber layer in the connecting pipe, increase the intensity of connecting pipe, also make the junction between two main parts also have continuous composite fiber layer simultaneously, increase the intensity of junction.

(3) The surface coating and the anti-slip patterns are arranged on the surface of the main body, so that the anti-slip function is increased, and the surface coatings at the joint of the two main bodies can be melted to fill the gap for reinforcing connection.

(4) The connecting piece is arranged between the two main bodies to bond the butt joint surfaces of the two main bodies and fill a gap at the joint.

(5) The inclined plane of the butt joint surface of the main body is connected more tightly, so that the situation that the joint of the two main bodies is separated easily because the butt joint surface is a plane perpendicular to the axis of the ribbed pipe is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a main body of embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of the main body of embodiment 2 of the present invention;

FIG. 3 is a schematic view of the overall structure of embodiment 3 of the present invention;

fig. 4 is a schematic view of the overall structure of embodiment 4 of the present invention.

The graphic symbols are illustrated as follows:

1-main body, 11-inner layer, 12-composite fiber layer, 13-outer layer, 14-surface coating layer, 141-groove, 2-ribbed pipe, 3-connecting pipe and 4-connecting piece.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and operate, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and it is possible for one of ordinary skill in the art to understand the specific meaning of the above terms according to the specific situation.

Example 1

As shown in fig. 1, a fiber reinforced plastic profile capable of being welded by hot melting comprises a main body 1 with a hollow interior, wherein a plurality of rib pipes 2 which are parallel to each other are arranged in the main body 1, the rib pipes 2 are arranged on two sides of the main body 1, the side surface of the main body 1, which is close to the end surfaces of the rib pipes 2, is a butt joint surface, and the butt joint surface is used for connecting the two main bodies 1.

The inside rib pipe 2 that is equipped with of main part 1 can be through the plug connector that cross sectional shape and rib pipe 2 match, with the even section of plug connector insert respectively establish two main part 1 in the rib pipe 2 with rib pipe 2 hot melt be connected, be connected through rib pipe 2 in the main part 1 and plug connector like this, avoid carrying out the hot melt to the butt joint face that contains the fibrous layer, but carry out the hot melt to the inside wall of rib pipe 2 and the lateral wall of plug connector, the plug connector can convenient to use standard tubular product of purchasing, and main part 1 when making, the size of rib pipe 2 matches with standard tubular product, guarantees that rib pipe 2 can carry out the hot melt with standard tubular product and be connected.

As shown in fig. 1, the body 1 includes a hollow inner layer, a composite fiber layer 12 wound on an outer wall of the inner layer, and an outer layer 13 provided on an outer wall of the composite fiber layer 12.

The composite fiber layer 12 may be a reinforcing fiber material such as glass fiber and carbon fiber, in this embodiment, when the profile is processed, the inner layer of the main body 1 and the ribbed pipe 2 in the inner layer are extruded first, then the fiber material is wound around the outer wall of the inner layer by one turn, and finally the outer layer 13 of the main body 1 is extruded. The inner layer and the outer layer 13 are made of plastic main materials of sectional materials, the materials can be PP, PE, PVC and the like, and the composite fiber layer 12 can greatly improve the mechanical properties of the main body 1 such as strength and the like. The composite fiber layer 12 is sandwiched between the inner layer and the outer layer 13, the composite fiber layer 12 is exposed at the section of the plate consisting of the inner layer, the composite fiber layer 12 and the outer layer 13, and if the side face of the host machine is heated by using a traditional hot-melt welding method, the welding position is unreliable due to the stacking of fibers in the composite fiber layer 12, so that the composite fiber layer 12 needs to be avoided in the welding process. When the inner side wall of the ribbed pipe 2 is heated and melted, only the surface of the inner side wall of the ribbed pipe is melted, the composite fiber layer 12 is not involved, after the main bodies 1 are connected by the connecting pipe 3, gaps of butt joint surfaces between the main bodies 1 can be bonded by glue, a heating rod can be placed on a seam between the main bodies 1 to heat and melt the outer layer 13 for connection, the auxiliary connection effect can be achieved, the composite fiber layer 12 is not influenced, other connection modes or the gaps between the main bodies which are not influenced can be used for sealing, and the realization of the scheme is not influenced.

As shown in fig. 1, at least one outer surface of the main body 1 is further provided with a surface coating 14 for preventing slip, and the surface coating 14 is provided with a slip-preventing pattern.

The outer surface of the main body 1 can be provided with a surface covering layer according to requirements, the surface covering layer can be set to be a required color, and the anti-skid patterns can also be set according to requirements. The surface coating may be provided on one or more faces of the body 1.

As shown in fig. 1, the surface coating 14 is made of thermoplastic.

In this scheme, carry out the hot melt welding back through connecting pipe 3 between the main part 1, main part 1 is direct has certain gap to the interface, can heat the melting welding through near the surface coating in gap, only welds surface coating like this, can avoid heating composite fiber layer 12. And if the bodies 1 are connected only by the surface coating layer, the connection strength is insufficient, but after the bodies 1 have been thermally welded by the connection pipe 3, the connection of the surface coating layer may serve to assist in reinforcing the gap between the connected bodies 1.

As shown in fig. 1, the anti-slip pattern is a plurality of parallel grooves 141 formed on the surface of the main body 1, and the axes of the grooves 141 are parallel to the axis of the rib tube 2.

When the surface cladding layer is hot-melted, the melted plastic flows into the groove 141, so that the welding seam is prevented from being protruded, the appearance is prevented from being influenced, and adverse effects are caused during use.

Example 2

This embodiment is similar to embodiment 1, except that, as shown in fig. 2, in this embodiment, when the main body 1 is processed, the composite fiber layer 12 is co-extruded with the inner layer and the outer layer 13, the composite fiber layer 12 does not completely cover the inner layer, and a part of the inner layer is in direct contact with the outer layer 13.

Example 3

A heat-weldable fibre-reinforced plastic profile assembly comprising a connecting tube 3 and a heat-weldable fibre-reinforced plastic profile as in embodiment 1 or 2, the connecting tube 3 being intended to be inserted into the ribbed tube 2.

The utility model is characterized in that a hollow ribbed tube 2 is arranged in a main body 1, and when the two main bodies 1 are spliced, a connecting tube 3 is used for hot melting and inserting into the ribbed tube 2 of the other main body 1 to connect the two main bodies 1 together. In this way, the butt joint surface of the main body 1 containing the fiber layer does not need to be subjected to hot melting, the rib pipes 2 and the connecting pipes 3 in the main body 1 are heated, melted and welded, and the situation that the fiber is accumulated and mixed due to the direct heating of the surface of the main body 1 containing the fiber layer, so that the joint is fragile and unreliable is avoided. When the section bar is subjected to hot melting welding, a welding device is used for heating the inner side wall of one end of the rib pipe 2 in one main body 1 and the outer side wall of one end of the connecting pipe 3, then one end of the heated connecting pipe 3 is inserted into the heated rib pipe 2, the rib pipe 2 and the connecting pipe can be connected together after plastics are cooled, and then the outer side wall of the other end of the connecting pipe 3 and the inner side wall of one end of the rib pipe 2 in the other main body 1 are used for heating and then are spliced and cooled. Like this, just can be through connecting pipe 3 both ends respectively with 1 hot melt welding of main part, be in the same place two main part 1 fixed connection, and, because be hot melt welding between connecting pipe 3 and the rib pipe 2 and can set up many rib pipe 2 in one main part 1 and supply connecting pipe 3 to connect, firm in connection reliability between the main part 1 is high, and simultaneously, connect two main parts 1 through connecting pipe 3, compared through sheetmetal and screw connection, can avoid the sheetmetal and screw life time than long after take place the corrosion and lead to the performance to descend the easy fracture connection unreliable that appears, also can avoid because the intensity and the hardness of metal and plastics, the difference of the nature of pliability etc. can be avoided, the junction between sheetmetal and screw and main part 1 can produce great gap along with the increase of live time gradually, lead to the connection between the main part 1 to take place to become flexible.

Because only two ends of the ribbed pipes 2 are connected with the connecting pipe 3, two groups of mutually perpendicular ribbed pipes 2 are arranged in the main body 1, and each group comprises a plurality of mutually parallel ribbed pipes 2. In this way, all four sides of the main body 1 can be connected to other main bodies 1 through the connection pipes 3, and after the main body 1 is formed into a desired shape, the rib pipes 2 exposed to the outside can be sealed by the connection pipes 3 having one sealed end being thermally welded to the rib pipes 2. The main body 1 can also be provided with only one group of ribbed pipes 2, the ribbed pipes 2 in the main body 1 are all parallel to each other, and the main body 1 can be spliced only along the axis of the ribbed pipes 2. The two bodies 1 may be used in combination as needed.

As shown in fig. 3, the connecting pipe 3 is a multilayer composite pipe, and the multilayer composite pipe sequentially comprises a plastic layer, a fiber layer and a thermoplastic plastic layer from inside to outside.

The outermost layer of the connecting pipe 3 is a thermoplastic layer, and the outermost layer of the connecting pipe 3 is welded with the ribbed pipe 2 after being heated and melted by using a welding device. The composite fiber layer 12 of the connecting pipe 3 is used for increasing the strength of the connecting pipe 3, the fiber layer at the joint between the two main bodies 1 is broken, so that the strength of the joint is far lower than that of the main bodies 1, and the composite fiber layer 12 is added at the connecting pipe 3, so that the continuous fiber layer is also arranged at the joint between the two main bodies 1, and the strength and the reliability of the joint between the two main bodies 1 are greatly increased.

As shown in fig. 3, the cross sections of the ribbed tube 2 and the connecting tube 3 perpendicular to their own axes are circular.

In order to reduce the weight, the inner part of the main body 1 is hollow, the ribbed tube 2 is also used as a supporting and reinforcing structure in the main body 1, and a reinforcing structure such as a reinforcing rib can be arranged in the main body 1. In the scheme, the cross section of the ribbed pipe 2 is circular, the circular pipeline is more common, the existing pipeline on the market can be directly used as the connecting pipe 3, and the universality is stronger.

Example 4

The embodiment is similar to embodiment 3, except that, as shown in fig. 4, the embodiment further includes a connecting member 4 sleeved on the connecting pipe 3, a through hole for the connecting pipe 3 to pass through is provided on the connecting member 4, the cross-sectional shapes of the connecting member 4 and the main body 1 perpendicular to the axis of the rib pipe 2 are similar polygons, the cross-sectional area of the connecting member 4 perpendicular to the axis of the rib pipe 2 is not less than the cross-sectional area of the main body 1 perpendicular to the axis of the rib pipe 2, and the material of the connecting member 4 is thermoplastic.

The connecting piece 4 is arranged between the butt joint surfaces of the two main bodies 1 when the two main bodies 1 are connected, and the connecting piece 4 is provided with a through hole which can be sleeved on the connecting pipe 3. The connecting piece 4 is made of thermoplastic plastics, and can be heated and melted to be respectively in thermal welding with the butt joint surfaces of the two main bodies 1, so that the connecting piece 4 serves as an adhesive for bonding the butt joint surfaces of the two main bodies 1. When the connecting piece 4 is perpendicular to the cross sectional area of the axis of the rib pipe 2 is larger, the connecting piece 4 is sleeved on the connecting pipe 3, the edge of the connecting piece 4 is protruded relative to the main body 1, and after the connecting pipe 3 and the two main bodies 1 are respectively subjected to hot melting welding, the protruded edge of the connecting piece 4 is heated and melted, so that the gap between the two main bodies 1 can be filled after the connecting piece 4 is melted, and the connection between the main bodies 1 is further enhanced.

Example 5

This embodiment is similar to embodiment 3 or 4, except that in this embodiment, the side surfaces of the main body 1 on both sides of the axis of the rib tube 2 are mutually matched slopes.

The butt joint face of the main body 1 is an inclined face, when the two main bodies 1 are spliced, the inclined faces of the two main bodies 1 are overlapped up and down, the weight of the main body 1 and the weight born when the main body is used can force the two inclined faces to be jointed more tightly, if the butt joint face is a vertical plane, the two main bodies 1 are easily separated to form a larger gap, and if the butt joint face is the two inclined faces, the inclined faces can be jointed up and down even if the two main bodies 1 are separated from each other along the axis direction of the rib pipe 2.

Example 6

This embodiment is similar to embodiment 3 or 4 or 5, except that in this embodiment, the cross section of the rib tube 2 perpendicular to the axis of the rib tube 2 is rectangular, and the cross section of the connecting tube 3 perpendicular to the axis of the connecting tube 3 is rectangular matching with the rib tube 2.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a but hot melt welding's fiber reinforced plastic section bar, its characterized in that, including inside hollow main part (1), a plurality of rib pipes (2) that are parallel to each other that are equipped with inside main part (1), rib pipe (2) are located the both sides of main part (1), main part (1) are close to the side of rib pipe (2) terminal surface is the butt joint face, the butt joint face is used for connecting between two main parts (1).

2. A hot-weldable fibre-reinforced plastic profile according to claim 1, characterised in that the body (1) comprises a hollow inner layer (11), a composite fibre layer (12) wound around the outer wall of the inner layer (11), and an outer layer (13) provided on the outer wall of the composite fibre layer (12).

3. A hot-melt weldable fibre-reinforced plastic profile according to claim 1 or 2, characterised in that at least one outer surface of the main body (1) is further provided with a surface coating (14) for slip resistance, the surface coating (14) is provided with a slip-resistant pattern, and the material of the surface coating (14) is thermoplastic.

4. A hot-weldable fibre-reinforced plastic profile according to claim 3, characterised in that the slip-resistant pattern is a plurality of mutually parallel grooves (141) provided in the surface of the main body (1), the axes of the grooves (141) being parallel to the axis of the ribbed tube (2).

5. A heat-weldable fibre-reinforced plastic profile assembly, characterised in that it comprises a connecting tube (3) and a heat-weldable fibre-reinforced plastic profile according to one of claims 1 to 4, the connecting tube (3) being intended to be inserted in the ribbed tube (2).

6. A hot-melt weldable fibre-reinforced plastic profile assembly according to claim 5, characterised in that the connecting tube (3) is a multilayer composite tube, which is in turn, from the inside to the outside, a plastic layer, a fibre layer and a thermoplastic layer.

7. A hot-melt weldable fibre-reinforced plastic profile assembly according to claim 5 or 6, wherein the cross-section of the ribbed tube (2) perpendicular to the axis of the ribbed tube (2) is rectangular and the cross-section of the connecting tube (3) perpendicular to the axis of the connecting tube (3) is rectangular to match the ribbed tube (2).

8. A heat-weldable fibre-reinforced plastic profile assembly according to claim 5 or 6, characterised in that the cross-sections of the ribbed tube (2) and the connecting tube (3) perpendicular to their own axes are both circular.

9. A hot-weldable fibre-reinforced plastic profile assembly according to claim 5, characterised in that the sides of the main body (1) on both sides of the axis of the ribbed tube (2) are bevelled to match each other.

10. A hot-melt weldable fiber reinforced plastic profile component according to claim 5, further comprising a connecting member (4) sleeved on the connecting pipe (3), wherein a through hole for the connecting pipe (3) to pass through is formed in the connecting member (4), the connecting member (4) and the main body (1) are similar polygons in cross-sectional shapes perpendicular to the axis of the rib pipe (2), the cross-sectional area of the connecting member (4) perpendicular to the axis of the rib pipe (2) is not smaller than that of the main body (1) perpendicular to the axis of the rib pipe (2), and the connecting member (4) is made of thermoplastic plastic.

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