WO2007137497A1

WO2007137497A1 - A plastic composite board with friction welded structure

Info

Publication number: WO2007137497A1
Application number: PCT/CN2007/001595
Authority: WO
Inventors: Luhao Leng
Original assignee: Luhao Leng
Priority date: 2006-05-19
Filing date: 2007-05-16
Publication date: 2007-12-06
Also published as: CN101074759A

Abstract

A plastic composite board with friction welded structure comprises a plastic surface plate (11) and an injection molded piece (12). The plastic surface plate (11) is extruded directly or vacuum-molded after extrusion. The injection molded piece (12) can be formed by injection molding directly or consisted of plural injection molded pieces. The plastic surface plate (11) and the injection molded piece (12) are welded together at the contact position by friction welding. Small protuberant points or stripes are arranged at the contact position between the injection molded piece (12) and the bottom surface of plastic surface plate (11), and can be melted to bind the plastic surface plate (11) and the injection molded piece (12) when friction welding. In the case that the higher structural strength is required, an internally embedded reinforcement can be placed between the injection molded piece (12) and the plastic surface plate (11) to enhance strength and decrease the amount of the injection molded piece (12) used. The plastic composite board can be applied to chair board, file cabinet, store cabinet, materiel shelf, wall decorative board, clothespress separator or the like.

Description

Plastic composite board with friction welding structure

The present invention relates to a plastic composite panel, and more particularly to a plastic composite panel of a friction welded structure.

Background technique

Sheet is a commonly used material in the construction or furniture industry, for example, as a wall panel, or as a panel for making tables, a seat and backrest for a chair, a partition or a bedside for a bookcase or cabinet, or Baffle at the end of the bed. The previous wall decoration panels, or the panels of various tables such as conference tables, dining tables, leisure tables, computer desks, or the use of a variety of indoor and outdoor products such as the seat and backrest of the chair, the partition of the bookshelf or the cabinet. Most of the plates are made of wood, fiberboard or particleboard. These wood-based plates will be used less and less with the reduction of forest resources in China, the restrictions on timber harvesting, and the increasing price of wood. Therefore, plastic sheets made of plastics are increasingly used by people. When the prior art plastic sheets are selected as the sheets of the above products, one is made by injection molding, however, The plastic plate of this structure is heavy in weight, very inconvenient to move, and requires expensive equipment and molds, especially for large-sized boards, and the other is made by plastic forming. Although the composite board is light in weight, easy to clean, low in cost and beautiful in appearance, the composite board usually needs to be filled with a honeycomb paperboard and a lining member between the panel and the bottom plate to enhance the strength, which brings the production. A certain degree of difficulty, resulting in the production costs can not be reduced, affecting the competitiveness of the product.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a plastic composite panel of a friction welded structure, which is connected by friction welding structure between a panel formed by extrusion molding or extrusion and a molded part after extrusion. Together, the advantages of the respective structures of plastic extrusion, blistering and injection molding can be maximized, and the composite sheets can be compensated for each other, so that the composite sheet has low cost, low material consumption, easy processing, light weight, easy production process automation, and composite board. The surface is smooth, smooth and so on.

The technical solution adopted by the present invention to solve the technical problem thereof is: a plastic composite board of a friction welding structure, comprising:

a plastic panel having a shape of a single body formed by direct extrusion molding or extrusion molding after extrusion, and having an upper surface and a lower surface;

1

Confirmation The injection molded part is one or more single structures which are made by direct injection molding and are matched with the shape of the plastic panel. The upper part of the contact with the lower surface of the plastic panel is provided with a plurality of parts which can be melted on the panel during friction stir welding. Small bumps or small ribs between the injection molded parts that connect the panel to the injection molded part;

The periphery of the plastic panel is coincident with the corresponding periphery of the injection molded part, and the lower surface of the plastic panel is integrated with the corresponding bumps or ribs of the injection molded part by friction welding.

The injection molded part is a single injection molded single structure, and the injection molded part is attached to all of the lower surface of the plastic panel or a portion attached to the lower surface of the plastic panel.

The injection molded part is a combination of a plurality of injection-molded single-body structures, and the injection-molded parts are attached to all of the lower surface of the plastic panel or to the lower surface of the plastic panel.

The upper part of the injection molded part is also integrally injection-molded with a plurality of upwardly protruding ribs, and the contact between the top of the rib and the lower surface of the plastic panel is provided to be melted between the panel and the injection molded part during friction welding. Small bumps or small ribs that connect the panel to the molded part.

An embedded reinforcement member is further disposed between the plastic panel and the injection molded part.

The plastic panel is a single layer or a multilayer body formed by blistering or direct forming.

The upper surface of the plastic panel is a flat surface or a curved surface.

The upper surface of the plastic panel is also provided with a texture or pattern structure made by printing.

The upper surface of the plastic panel is also compounded with a film layer containing a grain or pattern structure.

The upper surface of the plastic panel is further provided with a texture or pattern formed thereon by a transfer film, and the texture or pattern is also sprayed with a thermally cured or photocured varnish.

The plastic parts of the plastic composite panel and the overlapping sides of the panel are integrally joined by welding or glue. The embedded reinforcement member includes a closed frame or u-shaped frame formed of a tubular member or profile and a reinforcement member lining the corner portion of the composite plate body.

The embedded reinforcement member is a separate two frame or a II-shaped frame or an H-shaped frame formed of a pipe member or a profile.

The embedded reinforcement is a separate hardware and pipe.

The reinforcing member lining the corner is a hardware or a plastic member.

The plastic composite board of the friction welding structure of the invention has a single-shaped structure with a certain shape formed by direct extrusion molding or extrusion molding after extrusion, and the injection molded part is directly injection-molded and matched. One or more single-body structures in the shape of a plastic panel, thus, plastic panels and injection molded parts can be used The composite panel is made of the same color, for example, the plastic panel is light gray, and the injection molded part is also light gray; the plastic panel and the injection molded part can also be made into different colors to form the composite panel, for example, the plastic panel is light gray. The injection molded parts are green, or the plastic panels are beige, and the injection molded parts are blue; thus, the color of the composite panels is formed, which greatly increases the aesthetic effect of the composite panels.

'The plastic composite panel of the friction welded structure of the present invention is connected by friction welding structure between the panel formed by extrusion molding or extrusion and the injection molded part, in order to make the plastic panel and the injection molded part It can meet the technical requirements of friction welding, and it is necessary to provide some small bumps or small ribs for friction welding on the surface contact between the injection molded part and the plastic panel, the surface of the plastic panel and the contact point of the injection molded part, through these small bumps Or small ribs, integral or partial welded joints into one unit. Friction welding is a pressure welding method that utilizes the heat generated by the frictional movement of the weldment to achieve a reliable connection of the material. When the friction welding is performed, the friction welder applies a certain pressure and causes a relative frictional movement between the plastic panel and the injection molded part. The heat generated by the friction causes the contact end surface of the plastic panel and the injection molded part to reach a thermoplastic state. When the temperature reaches the melting point of the plastic itself, the welded small bumps or small ribs of the injection molded part melt rapidly at the contact of the plastic panel and the injection molded part. Then, it is bonded between the plastic panel and the injection molded part, and the plastic panel and the injection molded part are simultaneously cooled and shaped under a certain pressure, so that the welding between the plastic panel and the injection molded part is achieved, and the connection between the plastic panel and the injection molded part is realized. fixed. The injection molded part matched with the plastic panel may be a direct injection molding or a plurality of injection molded parts combined; and the injection molded part may be completely attached to the lower surface of the plastic panel, or may be partially attached to the plastic panel. The lower surface. The composite panel adopts the structural form of the same material and different process characteristics, which can maximize the advantages of the respective structures of plastic extrusion, plastic molding and injection molding, and make up for each other.

The plastic composite board of the friction welding splicing structure of the invention can also embed the reinforcing member in the green condition with high structural strength requirement, thereby improving the strength and reducing the amount of the plastic parts.

The plastic composite plate of the friction welded structure of the invention is a plastic extruded plate, and the shape and size of the surface can be made according to actual requirements, without requiring expensive equipment and molds like plastic parts, and the surface is integrally formed. It has good flatness, various colors, multi-layer material compounding, high surface hardness, easy to realize thin-walled large parts, and there are no defects such as shrinkage and flow marks on the surface of injection molded parts. The plastic panel is made of blister or direct forming. It can be single-layer or multi-layer. The thickness of the plastic plate is between 0.3 mm and 4 mm. For example, the materials that can be used are ABS, PP, PS. Single layer or PMMA+PS, PC+PS multilayer coextrusion, etc. Using the characteristics of multi-layer co-extrusion, the surface of the composite board can be improved under the premise of low cost changes. Hardness, wear resistance, weather resistance, and widening the range of products used. The upper surface of the plastic panel can be made into a flat surface, or can be made into any curved surface that can be molded by plastic molding and injection molding, so that the shape of the product is varied and has a wider range of use. The upper surface of the plastic panel may also be provided with a texture or pattern structure made by printing, or may be combined with a film layer containing a texture or a pattern structure, for example, various wood grain may be printed on the surface of the panel, The color of natural materials such as marble can also be combined with a film of various natural colors such as wood grain and marble. The upper surface of the plastic panel may also be provided with a texture or a pattern structure formed by the transfer film. For example, a transfer film having a natural material color such as various wood grain or marble may be composited on the surface of the panel, after transfer. Remove the film, spray heat-cured or light-cured varnish to increase the hardness and weather resistance of the surface.

The plastic composite plate of the friction welded structure of the present invention, the injection molded part may be a direct injection molding, or a plurality of injection molded parts may be combined. The injection molded parts can be combined in multiple pieces, so that the parts of the injection molded parts are reduced in size, thereby reducing the cost of the equipment and the mold, and avoiding the structure of the large-sized plastic parts; the injection molded parts are various in form, the dimensional accuracy is 髙, the reinforcing ribs can be designed, and the welding can be improved. Composite board strength.

In the plastic composite plate of the friction welding structure of the present invention, the upper part of the injection molded part may be provided with ribs or no ribs, and when the ribs are provided, small bumps or small ribs are usually provided on the ribs.

The plastic composite plate of the friction welding structure of the invention, the embedded reinforcement member can be a closed frame, which is composed of a pipe member or a profile, and the corner portion is lined with a reinforcing member, which can strengthen the corner impact resistance and also function as a connection; The reinforcing member may also be a u-shaped frame composed of a pipe member or a profile, and the corner portion is lined with a reinforcing member; the embedded reinforcing member may also be a separate two frame, which is composed of a pipe member or a profile; or the embedded reinforcement member is II-shaped. The frame is made up of pipe fittings or profiles; or the embedded reinforcing member is an H-shaped frame, which is composed of pipe fittings or profiles; the embedded reinforcing members can also be separate hardware pieces and pipe fittings, which can strengthen the strength of the composite plate and also connect effect. The pipe fittings or profiles are extruded, drawn or machined into the desired shape, and the reinforcing members of the corner lining are hardware or plastic parts.

The invention has the beneficial effects that the plastic panel produced by direct extrusion molding or extrusion molding is welded and welded together by a friction welding structure, and is integrally molded on the upper part of the injection molded part. a plurality of upwardly protruding ribs, the contact of the top of the ribs with the lower surface of the plastic panel is provided with a plurality of small convexities which can be melted between the panel and the injection molded part during the friction welding to connect the panel and the injection molded part Point or small ribs; this composite board structure made of the same material and different process characteristics can maximize the advantages of plastic extrusion, blistering and injection molding, and make up for each other. Make The composite board has the advantages of low cost, less material consumption, easy processing, light weight, easy production automation, smooth surface of the composite board, smooth and the like, and can be applied to a chair panel, a file cabinet, a locker, a material rack, a wall surface. Decorative panels, wardrobe partitions, etc.

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, a plastic composite panel of a friction welded structure of the present invention is not limited to the embodiment.

Figure 1 is a schematic view showing the structure of the present invention used on a seat;

Figure 2 is an enlarged schematic view of a portion A of Figure 1;

Figure 3 is an exploded perspective view of Figure 2;

4 is a schematic structural view of the first embodiment of the present invention as a seat panel;

Figure 5 is a schematic structural view of a panel of the chair plate of the embodiment;

Figure 6 is a schematic view showing the structure of the present invention as a seat back;

Figure 7 is a schematic view showing the structure of the present invention as a seat back (tilt);

8 is a schematic structural view of a panel of the present invention according to Embodiment 2;

Figure 9 is a schematic view showing another configuration of the present invention used on a seat according to the third embodiment;

Figure 10 is a schematic view showing the structure of the present invention as a seat board according to the third embodiment;

Figure 11 is a schematic structural view 1 of the fourth embodiment of the present invention;

Figure 12 is a second structural view of the fourth embodiment of the present invention;

Figure 13 is a schematic structural view 1 of the fifth embodiment of the present invention;

Figure 14 is a second structural view of the fifth embodiment of the present invention;

Figure 15 is a first schematic view of the construction of the present invention;

Figure 16 is a second structural view of the sixth embodiment of the present invention;

17 is a schematic structural view of the seventh embodiment of the present invention;

Figure 18 is a schematic view showing the configuration of an injection molded article of the present invention.

detailed description

Embodiment 1 Referring to FIG. 1 to FIG. 7, a plastic composite panel of a friction welded structure of the present invention is used on a seat, and FIG. 1 shows a schematic structural view of a seat. The utility model comprises a chair frame 3, a seat board 1 and a seat back 2 mounted on the seat frame 3, and the seat board 1 and the seat back 2 are plastic composite plates of a friction welding structure. As shown in FIG. 2 to FIG. 5, the seat board 1 includes:

Plastic panel 11, a monomer structure having a shape formed by direct extrusion molding or extrusion molding after extrusion, provided with an upper surface and a lower surface;

The injection molded part 12 is a single structure which is formed by direct injection molding and is matched with the shape of the plastic panel, and the upper part thereof is integrally injection-molded with a plurality of upwardly protruding ribs 121, the top of the rib 121 and the lower part of the plastic panel 11. The surface contact portion is provided with a plurality of small ribs 122 which can be melted between the panel 11 and the injection molded part 12 during friction welding to connect the panel and the injection molded part together;

The periphery of the plastic panel 11 is coincident with the corresponding periphery of the injection molded part 12, and the lower surface of the plastic panel 11 and the corresponding ribs 122 of the injection molded part are integrally joined by friction welding.

The plastic panel 11 is a single layer body formed by blistering or direct forming. Of course, a multilayer body may also be used; the upper surface of the plastic panel 11 is flat; and a film 111 is laminated on the upper surface of the plastic panel 11 111 is provided with a pattern or pattern structure made by printing; the plastic parts 12 and the overlapping sides of the panel 11 are integrally joined by welding or glue.

The seat panel 1 of the present invention, the plastic panel 11 is a single-shaped single-piece structure which is formed by direct extrusion molding or extrusion molding after extrusion, and the injection molded part 12 is directly injection-molded and is fitted to a plastic panel. One or more single structures of the shape, thus, the plastic panel 11 and the injection molded part 12 can be made into the same color to form the composite panel, for example, the plastic panel 11 is light gray, and the injection molded component 12 is also light gray; 11 and the injection molded part 12 can also be made into different colors to form a composite board. For example, the plastic panel 11 is light gray, the injection molded part 12 is green, or the plastic panel 11 is beige, and the injection molded part 12 is blue; The diversity of the color of the seat panel 1 is formed, which greatly increases the aesthetic effect of the seat panel 1.

The seat board 1 of the present invention is connected by a friction welding structure between the panel 11 which is formed by extrusion or extrusion and the injection molded part 12, in order to satisfy the gap between the plastic panel 11 and the injection molded part 12. The process requirements of the friction welding include that a small rib 122 for friction welding is provided on the surface of the injection molded part 12 and the plastic panel 11, and the surface of the plastic panel 11 and the contact point of the injection molded part 12 pass through the small ribs 122. , integral welding or partial welding is connected in one piece. Friction welding is a pressure welding method that utilizes the heat generated by the frictional movement of the weldment to achieve a reliable connection of the material. When the friction welding is performed, the friction welder applies a certain pressure and causes a relative frictional movement between the plastic panel 11 and the injection molded part 12. The heat generated by the friction causes the contact end surface of the plastic panel 11 and the injection molded part 12 to reach a thermoplastic state. When the temperature reaches the melting point of the plastic itself, the welded small ribs 122 of the injection molded part are in contact with the plastic panel 11 and the injection molded part 12. Quickly melted, and then bonded between the plastic panel 11 and the injection molded part 12, and the plastic panel 11 and the injection molded part 12 are simultaneously cooled and shaped under a certain pressure, thereby achieving welding between the plastic panel 11 and the injection molded part 12, realizing plastic The connection between the panel 11 and the injection molded part 12 is fixed. The injection molded part 12 matched with the plastic panel 11 is directly injection molded. Of course, a plurality of injection molded parts may be combined; the injection molded part 12 is completely attached to the lower surface of the plastic panel 11, and of course, Partially attached to the lower surface of the plastic panel 11. This kind of chair panel 1 uses the same material and different process features to maximize the advantages of plastic extrusion, blistering and injection molding, and make up for each other.

The seat panel 1 of the present invention, the plastic panel 11 is a plastic extrusion plate, the shape and size of the surface can be made according to actual requirements, without the need for expensive equipment and molds like plastic parts, and the surface is integrally formed, and the flatness is good. The color is diverse, the multi-layer material is compounded, the surface hardness is 髙, and it is easy to realize a thin-walled large piece, and the surface has no defects such as shrinkage and flow marks of the injection molded part. The plastic panel 11 is formed by blistering or direct forming, and may be a single layer or a plurality of layers. The thickness of the plastic plate is between 0.3 mm and 4 mm. For example, the materials that can be used are ABS, PP, PS single layer or P MA+PS, PC+PS multilayer coextrusion, etc. By using the characteristics of multi-layer coextrusion, the hardness, wear resistance and weather resistance of the surface of the chair panel 1 can be improved under the premise of low cost change, and the scope of use of the product can be broadened. The upper surface of the plastic panel 11 is made flat. Of course, it can also be used as any curved surface for blistering and injection molding, so that the shape of the product is varied and has a wider range of use. The upper surface of the plastic panel 11 may also be provided with a grain or pattern structure formed by printing, or a film layer containing a texture or a pattern structure, for example, various wood grain may be printed on the surface of the panel, The color of natural materials such as marble can also be combined with a film of various natural colors such as wood grain and marble. The upper surface of the plastic panel may also be provided with a texture or a pattern structure formed by the transfer film. For example, a transfer film having a natural material color such as various wood grain or marble may be composited on the surface of the panel, after transfer. Remove the film, spray heat-cured or light-cured varnish to increase the hardness and weather resistance of the surface.

The seat panel 1 of the present invention is a direct injection molding, and of course, a plurality of injection molded parts can be combined as needed. The injection molded parts can be combined in multiple pieces, so that the parts of the injection molded parts are reduced in size, thereby reducing the cost of the equipment and the mold, avoiding the structure of the large-sized plastic parts; the injection molded parts are various in form, the dimensional accuracy is high, the reinforcing ribs can be designed, and the welding can be improved. Composite board strength.

As shown in FIG. 6 to FIG. 7 , the seat back 2 includes a plastic panel 21 , an injection molded component 22 , and an embedded reinforcing member 23 . The injection molded component 22 is integrally injection molded with a plurality of upwardly protruding ribs 221 , and the top of the rib 221 Plastic The contact of the lower surface of the panel 21 is provided with a plurality of small ribs (not shown) which can be melted between the panel 21 and the injection molded part 22 during friction welding to connect the panel and the injection molded part; 21 is a curved shape, and the embedded reinforcing member 23 is used to realize connection with the seat frame 3.

Embodiment 2 Referring to FIG. 8, a plastic composite panel of a friction welded structure of the present invention is used on a seat, and is different from the first embodiment in that a surface of the panel is provided with a printing layer 112. The printed layer 112 is a texture or pattern structure printed directly on the surface of the panel by printing.

Embodiment 3 Referring to FIG. 9 to FIG. 10, a plastic composite panel of a friction welded structure of the present invention is used on a seat, and FIG. 9 shows a schematic structural view of another structural seat. The seat includes a seat frame 30, a seat plate 10 and a seat back 20 mounted on the seat frame 30, and the seat plate 10 and the seat back 20 are plastic composite plates of a friction welded structure.

The plastic composite panel comprises a plastic panel 15, an injection molded component 16 and an embedded reinforcement 17; the plastic panel 15 of the seat panel 10 and the back 20 is formed by direct extrusion or extrusion molding. The integrally formed unitary structure is provided with an upper surface and a lower surface; the upper sides of the injection molded part 16 are integrally injection-molded with a plurality of upwardly convex ribs 161, and the top of the rib 161 is provided with small ribs or small bumps ( Not shown in the drawing), when the plastic panel 15 is coupled with the injection molded part 16, the friction welding method is adopted, and small ribs or small bumps on the top of the rib 161 are melted between the panel 15 and the injection molded part 16 to make The panel 15 is fixed to the injection molded part 16, and the embedded reinforcement 17 is two separate tubes. The embedded reinforcement 17 is disposed between the plastic panel 15 and the injection molded part 16, and on the other hand, functions to reinforce the seat board 10, and On the one hand, it also functions to facilitate connection with the seat frame 30.

Embodiment 4 Referring to FIG. 11 and FIG. 12, a plastic composite board of a friction welded structure of the present invention comprises a plastic panel 41 and an injection molded part 42, and the plastic panel 41 is directly extruded or extruded. The formed single-shaped structure has a top surface and a lower surface; the injection molded part 42 is integrally injection-molded on both sides thereof with a plurality of upwardly protruding ribs 421, the top of the rib 421 and the plastic panel The contact of the lower surface of 41 is provided with a plurality of small ribs 422 which can be melted between the panel 41 and the injection molded part 42 during friction welding to connect the panel and the injection molded part together;

The periphery of the plastic panel 41 is coincident with the corresponding periphery of the injection molded member 42, and the lower surface of the plastic panel 41 is integrated with the corresponding rib 421 of the injection molded member 42 by friction welding.

Embodiment 5 Referring to FIG. 13 and FIG. 14 , a plastic composite panel of a friction welded structure of the present invention comprises a plastic panel 51 and an injection molded component 52. The injection molded component 52 is integrally formed by injection molding. The rib 521, the contact of the top of the rib 521 with the lower surface of the plastic panel is provided with a plurality of small bumps 522 which can be melted between the panel and the injection molded part during the friction welding to connect the panel and the injection molded part together. There is also a buried reinforcing member 53 between the plastic panel 51 and the injection molded member 52. The embedded reinforcing member 53 is a separate two frame, which is composed of a tubular member, and may of course also be formed of a profile. The embedded reinforcing member 53 is Located on both sides of the composite panel. By using friction welding, the small bumps 522 on the top of the ribs 521 are melted between the panel 51 and the injection molded part 52 to fix the panel 51 and the injection molded part 52, thereby constituting the composite board.

Embodiment 6 Referring to FIG. 15 and FIG. 16, a plastic composite board of a friction welding structure of the present invention comprises a plastic panel 61 and an injection molded part 62, an injection molded part 62, and an injection molded part 62 is formed by injection molding. The raised rib 621, the contact of the top of the rib 621 with the lower surface of the plastic panel is provided with a plurality of small convexities which can be melted between the panel and the injection molded part during the friction welding to connect the panel and the injection molded part. Point or small rib (not shown); by friction welding, small ribs or small bumps on the top of the rib 621 are melted between the panel 61 and the injection molded part 62 to make the panel 61 and the injection molded part 62 Fixed to form a composite panel.

In this configuration, the injection molded part 62 is a combination of four injection-molded single-body structures 6201, 6202, 6203, and 6204, and the injection-molded single-body structures 6201, 6202, 6203, and 6204 are formed in a frame shape. The injection molded part 62, and thus the injection molded part 62 is attached to a part of the lower surface of the plastic panel, so that the part size of the injection molded part can be made small, thereby reducing the cost of the apparatus and the mold.

Embodiment 7 Referring to FIG. 17 and FIG. 18, a plastic composite panel of a friction welded structure of the present invention comprises a plastic panel 71, an injection molded component 72, an embedded reinforcement 73, and the embedded reinforcement 73 is a pipe or A separate dome-shaped frame formed by the profile, the embedded reinforcement 73 is disposed between the plastic panel 71 and the injection molded component 72. The injection molded component 72 is integrally formed by injection molding a plurality of upwardly protruding ribs 721, and the top of the rib 721 The contact of the lower surface of the plastic panel is provided with a plurality of small bumps 722 which can be melted between the panel and the injection molded part during the friction welding to connect the panel and the injection molded part; by friction welding, the top of the rib 721 The small bumps 722 are melted between the face plate 71 and the injection molded part 72 to fix the face plate 71 and the injection molded part 72, thereby constituting the composite plate.

In this configuration, the injection molded part 72 is a combination of two injection molded single-body structures 7201 and 7202, and the injection-molded single-body structures 7201 and 7202 are attached to the lower surface of the plastic panel, the same. Since the two-piece injection molded unitary structures 7201, 7202 are used to form the injection molded part 72, the part size of the injection molded part can be made small, thereby reducing the cost of the equipment and the mold. Industrial applicability

The invention fully utilizes the advantages of different plastic molding processes and advanced friction welding technology to form a plastic composite plate with friction welding structure, including plastic panels, injection molded parts, plastic panels directly extruded or extruded and extruded. Forming, the injection molded part can be directly injection molded or composed of a plurality of injection molded parts, and the injection molded part and the plastic part are welded together by friction welding at the contact portion. The invention has convenient processing, is suitable for large-scale industrial production, and has good industrial applicability.

Claims

Rights request

A plastic composite panel of a friction welded structure, comprising:

a plastic panel having a shape of a single body formed by direct extrusion molding or extrusion molding after extrusion, 'providing an upper surface and a lower surface;

The injection molded part is one or more single structures which are made by direct injection molding and are matched with the shape of the plastic panel. The upper part of the contact with the lower surface of the plastic panel is provided with a plurality of parts which can be melted on the panel during friction welding. Small bumps or small ribs between the injection molded parts that connect the panel to the injection molded part;

2 . The plastic composite panel of the friction welded structure according to claim 1 , wherein: the injection molded part is a single injection molded single structure, and the injection molded part is attached to all of the lower surface of the plastic panel or A portion attached to the lower surface of the plastic panel.

3 . The plastic composite panel of the friction welded structure according to claim 1 , wherein: the injection molded part is combined with a plurality of injection molded single structures, and the injection molded part is attached to the plastic panel. 3 . The entire surface or the portion attached to the lower surface of the plastic panel.

4 . The plastic composite panel of the friction welded structure according to claim 1 , wherein: the upper part of the injection molded part is integrally injection-molded with a plurality of upwardly protruding ribs, and the top of the rib and the plastic panel. The contact of the lower surface is provided with a plurality of small bumps or small ribs which can be melted between the panel and the injection molded part during the friction welding to connect the panel to the injection molded part.

The plastic composite panel of the friction welded structure according to claim 1, wherein: the plastic panel is a single layer or a multilayer body formed by blistering or direct forming, and the plastic panel is The upper surface is a flat surface or a curved surface.

The plastic composite panel of the friction welded structure according to claim 1, wherein: the upper surface of the plastic panel is further provided with a texture or a pattern structure formed by printing; or The printed film produces a texture or pattern on it, and the texture or pattern is also coated with a thermally or photocurable varnish.

The plastic composite panel of the friction welded structure according to claim 1, wherein the upper surface of the plastic panel is further compounded with a film layer containing a grain or a pattern structure.

8 . The plastic composite panel of the friction welded structure according to claim 1 , wherein: the plastic parts of the plastic composite board and the overlapping sides of the panel are integrally joined by welding or glue. 8 .

9 . The plastic composite panel of the friction welded structure according to claim 1 , wherein: the plastic panel and the injection molded component further comprise an embedded reinforcement, wherein the embedded reinforcement comprises: A closed frame or U-shaped frame composed of a pipe or a profile and a reinforcing member lining the corner of the composite plate; the lining-reinforced member is a hardware or a plastic member.

10 . The plastic composite panel of the friction welded structure according to claim 1 , wherein: the plastic panel and the injection molded component further comprise an embedded reinforcement, wherein the embedded reinforcement is A separate two-frame or II-shaped frame or H-shaped frame made up of separate hardware, fittings, or tubes or profiles.

The plastic composite panel of the friction welded structure according to claim 4, wherein: the plastic panel is a single layer body formed by direct extrusion molding or extrusion molding. The layered panel is designed with an injection molded part according to the shape of the curved panel. The injection molded part comprises a bottom panel and an upwardly protruding rib, and the top of the rib is provided with a plurality of layers which can be melted between the panel and the injection molded part during ultrasonic welding to make the panel Small bumps or small ribs that are joined to the injection molded part, and the injection molded part is welded to the lower surface of the curved panel to form a seat plate or a backboard of the seat.

12. The plastic composite panel of the friction welded joint structure according to claim 11, wherein a reinforcing member is fixed between the plastic panel and the injection molded part, and is used for a seat plate or a backboard and other components. Connection.

The plastic composite panel of the friction welded structure according to claim 4, wherein: the plastic composite panel is a seat panel in which the seat panel and the seat back are integrated, and the plastic panel is directly extruded. Or a single-layer or multi-layer curved panel formed by extrusion molding after extrusion, and a plurality of injection molded parts are designed according to the shape of the curved panel, and the injection molded part comprises a bottom panel and an upwardly protruding rib, and the top of the rib is provided There are a number of small bumps or small ribs which can be melted between the panel and the injection molded part during ultrasonic welding to connect the panel to the injection molded part, and the plurality of injection molded parts are respectively welded to the lower surface of the curved panel.

The plastic composite panel of the friction welded structure according to claim 13, wherein a reinforcing member is fixed between the plastic panel and the injection molded part, and the reinforcing member is provided with two tubular members respectively. side.

15. The plastic composite panel of the friction welded structure according to claim 1, wherein: the injection molded part comprises a bottom panel and upwardly protruding ribs, and the upwardly protruding ribs have a mesh structure. .