CN209975747U - Composite material connecting piece for prefabricated sandwich heat-insulation wall - Google Patents
Composite material connecting piece for prefabricated sandwich heat-insulation wall Download PDFInfo
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- CN209975747U CN209975747U CN201920772127.3U CN201920772127U CN209975747U CN 209975747 U CN209975747 U CN 209975747U CN 201920772127 U CN201920772127 U CN 201920772127U CN 209975747 U CN209975747 U CN 209975747U
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Abstract
The utility model discloses a combined material connecting piece for prefabricating sandwich thermal insulation wall. The composite material connecting piece comprises a sleeve and a composite material connecting piece body; the sleeve is sleeved on the connecting piece body through injection molding; the sleeve is provided with a first end and a second end; the first end is provided with a limiting plate; the second end is provided with a bottom plate; the bottom plate is used for guiding and preventing the connecting piece from being pulled out of the heat insulation plate of the wall body; and a plurality of positioning anti-skidding thread ribs are arranged on the sleeve between the limiting plate and the bottom plate. The connecting piece has more stable performance and more accurate and reliable positioning.
Description
Technical Field
The utility model relates to a combined material connecting piece for prefabricating sandwich thermal insulation wall.
Background
In order to improve the energy-saving and heat-insulating effect of buildings, prolong the service life of building components and improve the construction effect of buildings, prefabricated sandwich heat-insulating walls are popularized and applied in the market. The prefabricated sandwich heat-insulating wall is a heat-insulating wall integrating bearing, heat insulation and enclosure decoration, and is composed of an inner leaf concrete wallboard, a heat-insulating layer and an outer leaf concrete wallboard, and the three layers are connected into a whole through a special connecting piece. The inner leaf concrete wallboard and the outer leaf concrete wallboard are generally made of reinforced concrete, the heat insulation layer is usually an extruded polystyrene heat insulation plate (XPS), and the three layers are compounded together through a composite material connecting piece. The composite material connecting piece penetrates through the heat insulation board in parallel, two ends of the connecting piece are anchored in the inner leaf concrete wall board and the outer leaf concrete wall board respectively, the concrete of the outer leaf wall is only used as a protective layer and a decorative layer of the heat insulation material and does not participate in the stress of the inner leaf wall, and the outer leaf wall can freely stretch and retract under the action of temperature change, so that the inner leaf wall and the outer leaf wall are independent in behavior.
The composite material connecting piece has the characteristics of excellent anchoring property, low heat conductivity coefficient, good corrosion resistance, simple and convenient construction and the like, avoids the cold and hot bridge effect, and greatly improves the heat preservation effect and the safety of the wall body. From the categories and characteristics of the connecting pieces commonly used in China at present, the fiber reinforced plastic connecting piece, namely the composite material connecting piece, is the connecting technology which is most widely applied to industrialized buildings at present. The connecting piece for the prefabricated concrete sandwich heat-insulation wallboard is used as an important embedded part for connecting the inner concrete layer and the outer concrete layer of the wallboard, is a key factor which has great influence on the mechanical property and the thermal property of the wallboard, and determines the safety and the functionality of the wallboard. The composite material connecting piece body applied to the market at present is produced by adopting a traditional impregnation mode, and the problems of uneven fiber arrangement, unstable performance and the like exist. Meanwhile, the problems of unstable splicing positioning in the heat insulation layer and the like exist in the aspect of structural design of the connecting piece. Therefore, there is a need to develop a composite material connector with more stable performance and more accurate and reliable positioning.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a combined material connecting piece for prefabricating sandwich thermal insulation wall, its performance is more stable, the location is more accurate reliable.
The utility model provides a composite material connecting piece for a prefabricated sandwich thermal insulation wall, which comprises a sleeve and a composite material connecting piece body; the sleeve is sleeved on the connecting piece body through injection molding; the sleeve is provided with a first end and a second end; the first end is provided with a limiting plate; the second end is provided with a bottom plate; the bottom plate is used for guiding and preventing the connecting piece from being pulled out of the heat insulation plate of the wall body; and a plurality of positioning anti-skidding thread ribs are arranged on the sleeve between the limiting plate and the bottom plate. The prefabricated sandwich heat-insulation wall comprises an inner leaf concrete wallboard, a heat-insulation layer and an outer leaf concrete wallboard. The connecting pieces are arranged in the inner leaf concrete wallboard, the heat preservation layer and the outer leaf concrete wallboard.
The cross-section of the connector body has a plurality of projections extending outwardly on the outer surface of the cylinder, forming a triangle-like, star-like or tooth-like shape. According to the utility model discloses a connecting piece, preferably, the cross-section of connecting piece body is a class triangle-shaped, connecting piece body both ends all are provided with recess for the anchor. Preferably, the transition portion is connected by a circular arc, that is, three sides are concave circular arcs. This improves the stability of the performance of the connection.
According to the connector of the present invention, preferably, the groove is in a v-shaped configuration. This is beneficial to increasing the anchoring force of the connecting piece and the concrete wall board.
According to the utility model discloses a connecting piece, preferably, the recess top with the distance is 5 ~ 8mm between the tip of connecting piece body. According to the utility model discloses a connecting piece, more preferably, the recess top with the distance is 6 ~ 7mm between the tip of connecting piece body.
The utility model discloses a connecting piece body can adopt the FRP material, the sleeve pipe can adopt the plastics material. According to the utility model discloses a connecting piece, preferably, the connecting piece body is fibre reinforced composite connecting piece body. According to the utility model discloses a connecting piece, preferably, the sleeve pipe is the plastic sleeve pipe.
The utility model discloses a limiting plate can be various shapes, for example, square, circular, oval etc. The utility model discloses a bottom plate can prevent extracting the toper bottom plate for the direction. The diameter of the bottom plate is generally smaller than that of the limit plate. According to the utility model discloses a connecting piece, preferably, the limiting plate is circular limiting plate, the toper bottom plate is prevented extracting for the direction by the bottom plate.
According to the utility model discloses a connecting piece, preferably, the diameter of bottom plate is less than the diameter of limiting plate, just the diameter of bottom plate with the corresponding diameter of the circle that the axis of locating anti-skidding screw thread muscle used the connecting piece body to form as the centre of a circle matches. Therefore, the performance of the connecting piece is more stable, and the positioning is more accurate and reliable.
According to the utility model discloses a connecting piece, preferably, the limiting plate with the axis of connecting piece body is arranged perpendicularly, the bottom plate adopts double-deck design, location anti-skidding screw thread muscle is two-way multiple spot spiral arrangement structure. The positioning anti-slip thread rib can be of an arc-shaped structure, so that the fixing performance of the connecting piece can be further improved. According to an embodiment of the present invention, the bottom plate is a double-layer tapered bottom plate with a wide upper part and a narrow lower part.
The connecting piece of the utility model can be prepared by adopting the following method:
manufacturing a connecting piece body through an injection pultrusion process;
injecting molten plastic around the connector body by an injection molding process to form a sleeve;
and cooling the molten plastic to obtain the composite material connecting piece with the connecting piece body sleeved with the sleeve.
The manufacturing of the connecting piece body comprises the following steps:
and designing a corresponding injection pultrusion die and a corresponding tool according to the cross-sectional shape of the connecting piece body, wherein the injection pultrusion die adopts single-hole injection, the fiber directional arrangement of the composite material is realized through the fiber arrangement pore plate and the injection pultrusion die, and the accurate proportioning injection impregnation of the glue solution is realized through an injection machine. The fiber arrangement pore plate adopts a multilayer gradient alignment pore plate, and all fibers of the composite material are arranged in sequence.
The manufacturing method of the connecting piece of the utility model specifically comprises the following steps:
firstly, manufacturing a fiber reinforced plastic connecting piece body by adopting an injection pultrusion process;
then, injecting molten plastic (such as ABS resin) around the fiber reinforced connector body by adopting an injection molding process to form a sleeve;
and cooling the molten plastic (such as ABS resin) for a certain time to obtain the prefabricated sandwich heat-insulating wall composite material connecting piece with the plastic (such as ABS resin) sleeve sleeved on the periphery of the fiber reinforced plastic connecting piece body.
The utility model discloses a sandwich thermal insulation wall body that heat preservation thickness is greater than 80mm can be applied to the connecting piece. During manufacturing, carbon fiber or aramid fiber can be mixed in the center of the connecting piece body to improve the mechanical property of the pultrusion piece. When the fused plastic (such as ABS resin) is injected around the connector body made of the fiber reinforced plastic by adopting an injection molding process, the fused plastic (such as ABS resin) is injected in the middle section of the connector body made of the fiber reinforced plastic, so that the plastic sleeve is sleeved outside the middle section of the connector body, and the length of the plastic sleeve is the same as the thickness of the heat preservation layer.
When the connecting piece is manufactured, a person skilled in the art can customize the connecting pieces with different specifications respectively according to the heat-insulating layers with different thicknesses, so that when the connecting piece is inserted into the prefabricated sandwich heat-insulating wall body, the connecting piece can be positioned and fixed in length to be accurately installed.
The utility model discloses the connecting piece body adopts class triangle-shaped structure, and both ends processing has "√" type structure anchor recess, and the atress is even, and strong with the concrete anchoring. The utility model discloses a connecting piece plastic casing adopts two direction to prevent pulling out the design, and double thread location design, the application effect is better. Furthermore, the utility model discloses a connecting piece adopts injection pultrusion technology to make and forms, and the fibre is directional accurate, stable in quality, with low costs, shaping efficient.
Drawings
Fig. 1 is a three-dimensional structure diagram of a composite material connecting piece of the present invention;
FIG. 2 is a front view of a composite connector of the present invention;
fig. 3 is a top view of a composite connector of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a schematic view of a composite material connecting piece mold of the present invention.
The reference numerals are explained below:
1-connecting piece body, 2-limiting plate, 3-sleeve, 4-bottom plate, 5-first preformed plate, 6-preformed frame, 7-second preformed plate, 8-die cavity, 9-injection hole and 10-injection die.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the present invention and are not limiting thereof.
As shown in fig. 1 to 4, the utility model discloses a combined material connecting piece for prefabricated sandwich thermal insulation wall sets up among prefabricated sandwich thermal insulation wall's interior leaf concrete wallboard, heat preservation and outer leaf concrete wallboard, and this connecting piece includes connecting piece body 1 and sleeve pipe 3. The connecting piece body 1 is made of fiber reinforced plastic (FRP material), and the sleeve 3 is an ABS resin sleeve. The cross-sectional shape of the connector body 1 is set to be like a triangle as shown in fig. 3, and the transition part adopts a circular arc design mode, that is, three sides are concave circular arcs. As can be seen from FIGS. 1-2, the cross-section of the connector body 1 has three protrusions extending outwardly on the outer surface of the cylinder, thereby forming a triangle-like shape. The two ends of the connector body 1 are provided with anchoring grooves which are in a V shape to increase the anchoring force with the concrete wall panel. In this embodiment, the tip of the groove (i.e., the end away from the ferrule) is 6mm in length from the tip (i.e., both ends) of the connector body 1.
The sleeve 3 is sleeved on the connecting piece body 1 through injection molding and is located in the middle of the connecting piece body 1. The sleeve 3 is provided with a first end and a second end. The first end of sleeve 3 is fixed with circular limiting plate 2. The second end of the sleeve 3 is fixedly provided with a bottom plate 4. The bottom plate 4 is a tapered bottom plate for guiding and preventing the connecting member from being pulled out of the insulation layer of the wall body. The surface of sleeve pipe 3 is provided with a plurality of location antiskid screw thread muscle, and it is arc structure. In this embodiment, the limiting plate 2, the bottom plate 4 and the sleeve 3 are integrally formed.
As can be seen from fig. 4, the limiting plate 2 is perpendicular to the axis of the connector body 1, the bottom plate 4 is a double-layer frustum shape with a wide top and a narrow bottom, and the end face of the bottom plate 4 is perpendicular to the axis of the connector body 1. The diameter of the bottom plate 4 is smaller than that of the limiting plate 2, and is equivalent to the corresponding diameter of a circle formed by the outer edge of the positioning anti-skidding thread rib by taking the axis of the connecting piece body 1 as the center of a circle. The bottom plate 4 adopts a double-layer design, and the positioning anti-skidding thread ribs are arranged in a bidirectional multipoint spiral manner. The bottom plate 4 can make things convenient for the connecting piece to insert in the heat preservation to location, fixed length installation, and play sealed effect, prevent that the concrete thick liquid from getting into the hole, influence the heat preservation effect.
The utility model discloses a connecting piece's shear resistance and tensile strength are high, adopt fibre reinforced plastic connector cooperation plastic sleeve pipe coefficient of heat conductivity little for the connection of prefabricated concrete sandwich thermal insulation wall internal, outer leaf concrete slab. The utility model discloses a structural function integration of connecting piece has that the coefficient of thermal conductivity is low, and is anticorrosive, the higher advantage of shear strength.
The following describes the manufacturing method of the connector of the present invention in detail. When the connecting piece body 1 is manufactured by adopting an injection pultrusion process, firstly, an injection pultrusion die and a tool are designed according to the section shape of the connecting piece body 1. Fig. 5 is a schematic diagram of the composite material connecting piece mold of the present invention, which is an injection pultrusion mold, and includes a preforming frame 6, a first preformed plate 5 disposed on one side of the preforming frame 6, a second preformed plate 7 disposed on the other side of the preforming frame 6, and an injection mold 10 connected to the preforming frame 6. The injection mold 10 has a mold cavity 8, an injection cavity, and an injection hole 9. The injection mold 10 employs single-hole injection, and an injection cavity is provided at a location 20 cm in front of the injection mold 10. The size of the injection cavity is set according to the volume fraction of the fiber reinforced plastic, and the shape of the injection cavity is consistent with that of the connecting piece body 1. The front end of the injection mould 10 is fixedly provided with a yarn dividing plate and two pre-forming plates which are arranged in a conical transition way. The preformed plate closest to the die inlet is similar in cross-sectional shape to the connector body 1. The yarn penetrating holes of the pre-forming plate are arranged in an array mode, and accurate positioning of integral yarn arrangement is achieved. During molding, the continuous and stable production of the connecting piece body 1 is realized by means of a creel with a tension function, a glue injection machine and pultrusion equipment. The fiber reinforced plastic adopts an epoxy resin system, the molding temperature is divided into three regions, the temperature range of the front region is 110-130 ℃, the temperature of the middle region is 150-170 ℃, the temperature of the rear region is 160-180 ℃, and the speed is 0.6-0.8 m/min.
Injecting molten ABS resin around the fiber reinforced connector body by adopting an injection molding process to form a sleeve; and cooling the molten ABS resin for a certain time to obtain the prefabricated sandwich heat-insulating wall composite material connecting piece with the ABS resin sleeve sleeved on the periphery of the fiber reinforced plastic connecting piece body.
The present invention is not limited to the above embodiments, and any variations, modifications, and substitutions that may occur to those skilled in the art may be made without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a combined material connecting piece for prefabricating with filling thermal insulation wall which characterized in that:
the connector comprises a sleeve and a composite material connector body;
the sleeve is sleeved on the connecting piece body through injection molding;
the sleeve is provided with a first end and a second end; the first end is provided with a limiting plate; the second end is provided with a bottom plate; the bottom plate is used for guiding and preventing the connecting piece from being pulled out of the heat insulation plate of the wall body;
and a plurality of positioning anti-skidding thread ribs are arranged on the sleeve between the limiting plate and the bottom plate.
2. The connector of claim 1, wherein: the cross-section of the connecting piece body is triangular, and grooves for anchoring are arranged at two ends of the connecting piece body.
3. The connector of claim 2, wherein: the grooves are in a V-shaped structure.
4. The connector of claim 2, wherein: the distance between the top of recess and the tip of connecting piece body is 5 ~ 8 mm.
5. The connector of claim 2, wherein: the distance between the top of recess and the tip of connecting piece body is 6 ~ 7 mm.
6. A connecting member according to any one of claims 1 to 5, wherein: the connecting piece body is made of fiber reinforced composite materials.
7. A connecting member according to any one of claims 1 to 5, wherein: the sleeve is a plastic sleeve.
8. A connecting member according to any one of claims 1 to 5, wherein: the limiting plate is a circular limiting plate, and the bottom plate is a guiding anti-pulling conical bottom plate.
9. The connector of claim 8, wherein: the diameter of the bottom plate is smaller than that of the limiting plate, and the diameter of the bottom plate is equivalent to the corresponding diameter of a circle formed by the outer edge of the positioning anti-skidding thread rib by taking the axis of the connecting piece body as the center of a circle.
10. A connecting member according to any one of claims 1 to 5, wherein: the limiting plate and the axis of the connecting piece body are arranged vertically, the bottom plate adopts a double-layer design, and the positioning anti-skidding thread rib is of a bidirectional multi-point spiral arrangement structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920772127.3U CN209975747U (en) | 2019-05-27 | 2019-05-27 | Composite material connecting piece for prefabricated sandwich heat-insulation wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920772127.3U CN209975747U (en) | 2019-05-27 | 2019-05-27 | Composite material connecting piece for prefabricated sandwich heat-insulation wall |
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| CN209975747U true CN209975747U (en) | 2020-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056093A (en) * | 2019-05-27 | 2019-07-26 | 北玻院(滕州)复合材料有限公司 | Composite material connector and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056093A (en) * | 2019-05-27 | 2019-07-26 | 北玻院(滕州)复合材料有限公司 | Composite material connector and its manufacturing method |
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