CN219543553U - PU composite concrete wet casting mold with irregular complex texture surface - Google Patents

Abstract

The utility model discloses a PU composite concrete wet casting mold with an irregular and complex texture surface, which comprises a PU mold (2) and a section steel support and glass fiber reinforced plastic bottom mold (5); the profile steel support and glass fiber reinforced plastic bottom die (5) is provided with an irregular and complex texture surface, and the irregular and complex texture surface is covered with the PU die (2). And the material is compounded and matched with the glass fiber reinforced plastic material, so that the consumption and the cost expenditure of the PU material are greatly reduced. The composite mold for mold seed reproduction is provided, so that the irregular surface texture is accurately reduced, the deformation of the mold is small, and the precision is high. While also ensuring a robust and convenient manufacture of the overall structure. The cost performance is outstanding, and the use function and the economy are both satisfied. The durability is very good, the product can be stored for a long time without deformation, and the product is easy to repeatedly use for hundreds of times.

Description

PU composite concrete wet casting mold with irregular complex texture surface

Technical Field

The utility model belongs to the technical field of molding of IPC classification B28B clay or other ceramic components, slag or mixtures containing cement materials, and particularly relates to a structural innovation and improvement technology of a mold device for concrete wet-casting irregular and complex texture surface components.

Background

The concrete wet casting technology is developed rapidly.

Common disadvantages of conventional forms of concrete products are: 1) The strength of the concrete product is low under the condition of the same mixing proportion; 2) The compactness is low, and pores are formed in the dry hard concrete product, the plastic concrete product and the flowable concrete product; 3) The production cost is high, and various additives such as a water reducing agent, an early strength agent, an antifreeze agent, a release agent and the like are required to be added in the production process; 4) The water absorption rate is high; 5) The snow melt resistance is poor; 6) High-frequency vibration and high-frequency vibration noise pollution are serious; 7) The damage of the die is serious, and the service life of the die is shortened; 8) And the labor is more.

The wet concrete pouring technology overcomes the defects of the traditional technology, adopts plastic concrete or flowable concrete, adopts tiny and low-frequency vibration, adopts a mould to press and form, has high strength and frost resistance, resists corrosion of snow melting agent and has high production efficiency.

For example, 201910742720.8 discloses a special mould for producing high-strength concrete products by a wet method, which is composed of an upper die head 1, a lower die box 2, a lower die box water guide bottom plate 3 and a water guide steel plate net sheet 4 as shown in figure 1; the upper die head 1 is composed of a horizontal connecting plate 10, a vertical supporting plate 11 with a strip-shaped hole, a vertical supporting plate 12 with a groove, a horizontal pressing plate 13, a horizontal excessive pressing plate 14, a horizontal water guide pressure plate 15, an O-shaped sealing ring 16 and a vacuum drainage conduit 17; the lower die box 2 consists of a die box integral outer frame 20, a transverse die plate 21, a longitudinal die plate 22, a transverse wear-resistant lining plate 23, a longitudinal wear-resistant lining plate 24 and a hanging ring 25; the bottom surface of the horizontal water guide pressure plate 15 is provided with a plurality of fine vertical water guide through holes 150 which are uniformly arranged, and the top surface is provided with a cross water guide groove along the positions of the holes; the top surface of the lower mould box water guide bottom plate 3 is provided with a plurality of vertical through holes 150 which are uniformly arranged, the bottom surface of the lower mould box water guide bottom plate is provided with a cross-shaped water guide groove along the position of the holes, and the periphery of the bottom surface of the lower mould box water guide bottom plate is provided with a plurality of grooves 30 for placing water guide bottom plate retaining pins 26.

However, for casting concrete members with irregular surface textures or shapes, the decorative surface of the concrete member is the same as the surface of the mold 1, and as shown in fig. 2, the mold is a model of an actual casting, and because the mold 1 needs to be used as a master mold to prepare an irregular shape mold, namely, a shape mold corresponding to the irregular surface textures is needed, but the hard molds such as a steel mold, a wood mold, a hard plastic mold, a gypsum mold, a glass fiber reinforced plastic mold and the like in the prior art cannot be applied. The improved elastic mold made of PU material is shown in figure 3, the material is slightly deformed in the use process, is slightly affected by temperature, hardly affects the reality of the modeling texture, can well adapt to the irregular surface texture or modeling, and has the advantages of high price, too much material consumption, large cost proportion of the whole mold, high cost expenditure and quite uneconomical.

In order to reduce the using amount of PU materials, the corresponding improvements comprise tests of brushing the surface of the mold seed on the PU materials, but the flowability is strong, and the uneven surface of the mold seed 1 is brushed to easily form serious sagging, so that the thickness uniformity is poor, and even the thin part has almost no thickness, so that the mold cannot be practically used; in order to solve the problem of fluidity, many manufacturers or institutions carry out thickening treatment by adding the PU material into the admixture, so that the fluidity is reduced, the PU material is conveniently brushed on a mold, and the flowing is weakened, but the tearing resistance is severely reduced as a result, so that the structural strength cannot meet the phenomenon that the PU material is not torn in the demolding process after pouring concrete and the like, and the PU material can only be used as a disposable material, thus being not practical and economical.

Other corresponding improvement techniques are also disclosed in a small amount, for example, similar materials such as silica gel and the like which also have elastic materials are used, but the obvious disadvantage is that excessive deformation which is difficult to overcome exists in the use process, the splicing dislocation is serious to the products which need to be spliced with continuous textures or modeling, and the quality of the molded products is poor and the molded products are more difficult to use for multiple times.

Disclosure of Invention

Aiming at the problems and the technical requirements, the utility model provides a PU composite concrete wet casting mold with irregular and complex texture surfaces, which supports an improved mold design and manufacturing method and a molding process, so as to realize more convenient, rapid and accurate wet casting molding of concrete or similar cast components with texture surfaces with complex surface roughness and different depths.

The utility model adopts the following technical scheme, thereby briefly realizing the research purpose and function.

Therefore, the PU composite concrete wet casting mold with irregular and complex texture surface provided by the utility model comprises the following components: PU mould and section steel support and glass fiber reinforced plastic bottom mould; the profile steel support and the glass fiber reinforced plastic bottom die are provided with irregular and complex texture surfaces, and PU dies are covered on the irregular and complex texture surfaces.

Wherein, the irregular complex texture surface of shaped steel support and glass steel die block is covered with a layer of PU mould. Or at least two layers of PU molds are covered on the irregular complex texture surface of the section steel support and the glass fiber reinforced plastic bottom mold. Preferably, the PU mould is 10 mm-15 mm thick.

The section steel support and glass fiber reinforced plastic bottom die comprises a glass fiber reinforced plastic resin layer and a section steel support structure. Wherein, lay the reinforcing fiber net cloth on the glass steel resin layer. Preferably, the section steel supporting structure is used as a rigid support of the glass fiber reinforced plastic resin layer and is uniformly arranged in the cavity at the lower side of the glass fiber reinforced plastic resin layer and on the bottom plane. The thickness of the glass fiber reinforced plastic resin layer is 5-10 mm.

And a conical limiting point of an embedded structure is arranged between the irregular complex texture surface of the section steel support and the glass fiber reinforced plastic bottom die and the PU die at a part of relatively low points.

And the PU mould and the profile steel support are vertically surrounded with the periphery of the glass fiber reinforced plastic bottom mould, and a member pouring groove is formed in the area surrounded by the profile steel support, the glass fiber reinforced plastic bottom mould and the PU mould. In particular, the periphery of the PU mould is folded upwards along the inner wall of the side mould of the component, and the joint part of the PU mould and the inner wall of the side mould of the component is kept smooth and level.

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

1) The deformation of the die is less, the quality of the production member is ensured, and the precision is high.

2) Greatly reduces the consumption of PU materials and reduces the cost.

3) The durability is very good, the product can be stored for a long time without deformation, and the product cost is reduced.

4) The die is easy to repeatedly use, and the use times can be hundreds of times.

Drawings

The features and advantages of the present utility model will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be interpreted as limiting the utility model in any way.

Fig. 1 is a schematic diagram of a mold structure special for producing a high-strength concrete product by a wet method disclosed in the background art.

FIG. 2 is a schematic cross-sectional view of a concrete member casting mold with irregular surface texture or shape.

FIG. 3 is a schematic diagram of the full-filling PU material of the mold.

Fig. 4 is a schematic structural diagram of a molding section of the PU composite wet casting mold in embodiment 1 of the present utility model.

FIG. 5 is a schematic cross-sectional view of a clay layer coated on the surface of a mold in example 1 of the present utility model.

FIG. 6 is a schematic diagram of the mold for producing the glass fiber reinforced plastic resin layer after coating the clay layer in example 1 of the present utility model.

FIG. 7 is a schematic diagram of a PU material cavity filling layer formed by mold types in embodiment 1 of the present utility model

The reference numerals include:

1-mold type, 2-PU mold, 3-member pouring groove, 4-member side mold, 5-section steel support and glass fiber reinforced plastic bottom mold;

6-clay layer, 7-cone-shaped limiting point, 8-glass fiber reinforced plastic resin layer, 9-section steel supporting structure, 10-exhaust hole, 11-PU material pouring hole, 12-baffle mold surrounding frame and 13-PU material pouring cavity.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.

In practical application, the PU dosage is generally reduced as much as possible or the PU is compounded with other materials to be used, so that the proper cost performance is obtained, and the use function and the economy are both met.

Example 1: irregular modeling is carried out on the surface of the mold seed 1; as shown in fig. 4, the section steel support and glass fiber reinforced plastic bottom mold 5 has an irregularly complex texture surface, and the irregularly complex texture surface is covered with the PU mold 2.

In the embodiment of the utility model, in the process of turning over the mold seeds 1, the PU mold 2 accurately restores the required irregular and complex texture surface, meanwhile, the glass fiber reinforced plastic resin layer 8 provides fitting support for the bottom surface knot of the PU mold 2 while restoring the irregular and complex texture surface structure, and the section steel support structure 9 serving as the section steel support and the framework structure of the glass fiber reinforced plastic bottom mold 5 provides integral rigid support for the composite section mold.

The implementation principle of the embodiment is as follows:

1) As shown in fig. 5, a layer of clay with a certain thickness is coated on the irregular surface of the mold seed 1, a cone-shaped limiting point 7 is reserved on the irregular surface part of the mold seed 1, which is more protruded from the top part, by clay molding, and clay layer 6 is formed after clay is dried; wherein, the thickness of the clay layer 6 can be determined according to the weight of the component, and is generally 10 mm-15 mm; how many of the reserved cone limit points 7 are determined according to the area of the model 1.

2) As shown in fig. 6, on the basis of the clay layer 6 which is manufactured, the surface of the clay layer 6 is coated with glass fiber reinforced plastic resin material and is reinforced by a back-attached steel frame. The concrete method comprises the steps of brushing a glass fiber reinforced plastic resin layer 8 on the surface of a clay layer 6, and configuring a section steel supporting structure 9, wherein the section steel supporting structure 9 and the glass fiber reinforced plastic resin layer 8 are solidified into a whole, the thickness of the brushed glass fiber reinforced plastic resin layer 8 is generally 5-10 mm thick, reinforcing fiber mesh cloth is arranged in the glass fiber reinforced plastic resin layer 8, the size, the density and the like of the section steel supporting structure 9 are determined according to the weight of a manufactured component, and the bearing capacity of the section steel supporting structure 9 is not less than 4 times of the weight of the component; curing after the manufacturing is finished; meanwhile, the upper glass fiber reinforced plastic resin mold may need to be designed, segmented and manufactured uniformly according to actual modeling, dimension, demolding sequence and the like, and all parts are connected into a whole through mechanical bolts.

3) As shown in fig. 7, after the section steel supporting structure 9 and the glass fiber reinforced plastic resin layer 8 are solidified into a whole, the section steel supporting and glass fiber reinforced plastic bottom die 5 is formed, the clay layer 6 is easy to remove due to the strength bottom and brittleness, and the surface of the die seed 1 is cleaned up and then is sprayed with a release agent; then, assembling a blocking mold surrounding frame 12 on the peripheral outer walls of the mold seed 1, sealing and fixing the blocking mold surrounding frame 12 and the section steel support and the glass fiber reinforced plastic bottom mold 5, and paying attention to the requirements that the mold releasing agent is sprayed on the relevant surface before fixing, the strength and rigidity of the blocking mold surrounding frame 12 and the section steel support and the glass fiber reinforced plastic bottom mold 5 must be ensured to bear the casting pressure and the deformation under the action of tension, and the like; in addition, attention is paid to the buoyancy influence possibly generated on the upper glass fiber reinforced plastic mold during pouring, and limiting measures for the up-and-down possible movement of the glass fiber reinforced plastic mold are made. A PU material pouring hole 11 is manufactured on the conical limiting point 7, and an exhaust hole 10 is arranged at the joint of the baffle die surrounding frame 12 and the section steel support as well as the glass fiber reinforced plastic bottom die 5; and a PU material pouring cavity 13 is formed at the position of an original clay layer 6 which is a gap between the die seed 1 surrounded by the blocking die surrounding frame 12 and the irregular abutting surface of the profile steel support and the glass fiber reinforced plastic bottom die 5. The PU material pouring hole 11 is used for pouring PU material into the PU material pouring cavity 13, the PU material is cooled and solidified to form the PU mould 2 with the irregular complex texture surface layer structure, the PU mould comprises the conical limiting point 7 with the embedded structure, then the blocking mould surrounding frame 12 is firstly detached, the mould seed 1 is taken down, and then the structural member side mould 4 is arranged around the section steel support and glass steel bottom mould 5, so that the PU composite concrete wet pouring mould with the irregular complex texture surface is prepared. The conical limiting point 7 effectively improves the composite strength of the profile steel support of the PU mould 2 and the glass fiber reinforced plastic bottom mould 5, and reduces or avoids the PU mould 2 from falling out when the component is demoulded.

4) During casting, the wet concrete material is injected into a casting groove 3 of a structural steel support with the PU mould 2 and a glass fiber reinforced plastic bottom mould 5 composite mould upper side member, wherein the surface of the structural steel support is covered with the PU mould 2; after the concrete wet-process pouring molding component is poured and molded, the four surrounding baffle dies, namely the component side dies 4, are removed, the component is lifted from the profile steel support and the glass fiber reinforced plastic bottom die 5, the PU rubber die can be lifted in the process, and the rubber die and the component are required to be combined with the glass fiber reinforced plastic die to be in place after being demolded later.

Preferably, the glass fiber reinforced plastic resin layer 8 is 5-10 mm thick.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly attached, detachably attached, or integrally attached.

The present utility model will be described in further detail with reference to the above examples, and it should be noted that the present utility model is not limited thereto.

Claims (10)

1. The PU composite concrete wet pouring mold with the irregular and complex texture surface comprises a PU mold (2) and a profile steel support and glass fiber reinforced plastic bottom mold (5); the steel section support and glass fiber reinforced plastic bottom die (5) is characterized by having an irregular and complex texture surface, and the irregular and complex texture surface is covered with a PU die (2).

2. The PU composite concrete wet casting mold with the irregular and complex texture surface according to claim 1, wherein the irregular and complex texture surface of the steel section support and glass fiber reinforced plastic bottom mold (5) is covered with a layer of PU mold (2).

3. The PU composite concrete wet casting mold with the irregular and complex texture surface according to claim 1, wherein the irregular and complex texture surface of the steel section support and glass fiber reinforced plastic bottom mold (5) is covered with at least two layers of PU molds (2).

4. The PU composite concrete wet casting mold with irregular complex texture surface according to claim 1, wherein a conical limit point (7) of an embedded structure is arranged between the irregular complex texture surface of the section steel support and glass steel bottom mold (5) and the PU mold (2) at a part of relatively low points.

5. The PU composite concrete wet casting mold with the irregular and complex texture surface according to claim 1, wherein the thickness of the PU mold (2) is 10 mm-15 mm.

6. The PU composite concrete wet casting mold with the irregular and complex texture surface according to claim 1, wherein the section steel support and glass fiber reinforced plastic bottom mold (5) comprises a glass fiber reinforced plastic resin layer (8) and a section steel support structure (9); wherein, a reinforced fiber mesh cloth is laid on the glass fiber reinforced plastic resin layer (8).

7. The PU composite concrete wet casting mold with irregular and complex texture surface according to claim 1, wherein the PU mold (2) and the section steel support and glass steel bottom mold (5) are provided with surrounding component side molds (4) at the periphery, and component casting grooves (3) are formed in the areas surrounded by the component side molds (4) on the section steel support and glass steel bottom mold (5) and the upper side of the PU mold (2).

8. The PU composite concrete wet casting mold with the irregular and complex texture surface according to claim 6, wherein the section steel supporting structure (9) is used as a rigid support of the glass fiber reinforced plastic resin layer (8) and is uniformly arranged in a cavity at the lower side of the glass fiber reinforced plastic resin layer (8) and on a bottom plane.

9. The PU composite concrete wet casting mold with the irregular and complex texture surface according to claim 6, wherein the glass fiber reinforced plastic resin layer (8) is 5-10 mm thick.

10. The PU composite concrete wet casting mold with irregular and complex texture surface according to claim 7, wherein the PU mold (2) is turned upwards along the inner wall of the component side mold (4) at the periphery, and the joint part with the inner wall of the component side mold (4) is kept smooth and flush.