阅读说明：本技术 滚塑强化支撑体及滚塑制品 (Rotational molding reinforced support and rotational molding product ) 是由 程云模 于 2019-11-08 设计创作，主要内容包括：本发明涉及滚塑强化支撑体及滚塑制品,其特征在于,采用滚塑工艺与滚塑制品的产品壁一次同步成型,所述支撑体位于滚塑制品的中空腔体内；包括支撑基体以及滚塑成型于支撑基体表层的滚塑体,所述支撑基体表层的滚塑体与滚塑制品的产品壁为一次滚塑成型的一体结构。本发明的滚塑强化支撑体,经由滚塑工艺使其与滚塑制品的产品壁一次同步成型,不仅能够解决滚塑制品自身强度不足的问题,同时还能实现对产品进行局部密封、分仓分腔以及增设隔断的功能。(The invention relates to a rotational molding strengthening support body and a rotational molding product, which are characterized in that a rotational molding process is adopted to be synchronously molded with the product wall of the rotational molding product at one time, and the support body is positioned in a hollow cavity of the rotational molding product; including supporting the base member and the rotational moulding body of rotational moulding shaping in supporting the base member top layer, the rotational moulding body on supporting the base member top layer and the product wall of rotational moulding goods are rotational moulding shaping's an organic whole structure once. The rotational molding strengthening support body is synchronously molded with the product wall of the rotational molding product at one time through the rotational molding process, so that the problem of insufficient strength of the rotational molding product can be solved, and the functions of local sealing, bin and cavity division and partition addition of the product can be realized.)

1. The rotational molding strengthening support is characterized in that a rotational molding process is adopted to be synchronously molded with the product wall of a rotational molding product at one time, and the support is positioned in a hollow cavity of the rotational molding product; including supporting the base member and the rotational moulding body of rotational moulding shaping in supporting the base member top layer, the rotational moulding body on supporting the base member top layer and the product wall of rotational moulding goods are rotational moulding shaping's an organic whole structure once.

2. The rotomolding reinforced support of claim 1,

the supporting base body consists of a middle main body part and two end root base parts, and the middle main body part is connected between two inner walls of the rotational molding product and can play the roles of bearing pressure, local sealing, separating and separating the hollow cavity; the two end root bases are respectively embedded in the two inner walls of the rotational molding product through the rotational molding process and are used for stably and firmly connecting the supporting base body to the inner walls of the rotational molding product.

3. The rotomolding reinforced support of claim 1,

the width of the root base parts at the two ends of the supporting base body is larger than the thickness of the main body part, so that the root base parts at the two ends of the supporting base body meet the combination firmness between the root base parts and the inner wall of the product.

4. The rotomolding reinforced support of claim 1,

the supporting base body adopts a plate, a bar, a rod and a column which are made of plastic, metal or other non-metal materials, or a frame body structure which is formed by welding or bundling the plate, the bar, the rod and the column.

5. The rotomolding reinforced support of claim 1,

the number of the supporting matrixes is set to be a plurality according to practical application scenes and use requirements.

6. The rotomolding reinforced support of claim 1,

when the supporting base body is made of metal materials, the surface of the supporting base body is pre-coated with a plastic coating layer.

7. The rotomolding reinforced support of claim 1,

the supporting base body is of a plate-shaped structure, and the plate-shaped structure is combined with a specific application scene to select a hollow design or a full-plate design.

8. A rotational molding product, wherein the cavity body is at least provided with a rotational molding strengthening supporting body according to claims 1-7, the rotational molding strengthening supporting body comprises a supporting base body and a rotational molding body rotationally molded on the surface layer of the supporting base body, the supporting base body is composed of a middle main body part and two end base parts, and the middle main body part is connected between two inner walls of the rotational molding product and can play the roles of bearing, local sealing, separating and binning for the cavity body; the base parts at the two ends are respectively embedded in the two inner walls of the rotational molding product through rotational molding bodies on the surface layers of the base parts so as to stably and firmly connect the support matrix to the inner walls of the rotational molding product.

9. The rotomoulded article of claim 8, wherein the rotomoulded article is designed as a rotomoulded boat or rotomoulded case, depending on the application.

Technical Field

The invention relates to a rotational molding product, in particular to a rotational molding reinforced support body and a rotational molding product with the rotational molding reinforced support body.

Background

The rotational moulding process is a thermoplastic hollow moulding process, and its basic moulding principle is that resin powder raw material is firstly added into mould, then the mould is heated and continuously rotated, the resin raw material in the mould is gradually and uniformly coated and melt-adhered on the whole inner surface of the mould under the action of gravity and heat, and formed into required shape, and finally the final rotational moulding product is formed through a series of procedures of cooling, demoulding and forming, etc.

In the plastic mould processing technology, the rotational moulding forming technology is always an important position. Compared with the traditional plastic mould processing technologies such as injection, blow molding, extrusion molding and the like, the rotational molding technology has the advantages that: 1. the rotational molding die has low manufacturing cost; 2. the edge and the external corner of the rotational molding product have good strength; 3. the shape of the rotational moulding product can be very complex, and the thickness can exceed more than 5 millimeters; 4. the rotational molding process can produce fully-closed products, and is particularly suitable for forming seamless large hollow plastic products.

However, due to the specific forming principle of the rotational molding process, one obvious defect is that the product can only be used for preparing hollow or shell products. Because the rotational molding product is of a double-layer hollow structure, plastic is used as rotational molding raw material, and the size thickness and the limitation of the traditional rotational molding process are added, the strength of partial products is insufficient, the deformation resistance is poor, and the use requirement cannot be met.

In order to solve the problems of insufficient strength and poor deformation resistance of rotational molding products, the following three types of traditional improvement measures are mainly adopted.

One is as follows: and cutting the double-layer rotational molding product from the middle, dividing the double-layer rotational molding product into two single layers, manually welding a plastic rib plate on one layer, and welding the plastic rib plate with the other layer after welding. The mode of manually welding the plastic rib plates is adopted, the welding line strength is poor, the production efficiency is particularly low, the product reliability is poor, the plastic rib plates are not connected with one layer, the effect of improving the product strength is limited, most importantly, the original one-step forming surface is damaged, and the significance of rotational molding production is lost.

The second step is as follows: the product is additionally provided with the adhesion points to adhere the double layers of the product together, and the mode is mainly used for improving the local deformation of the product, and the effect of improving the strength of the product is general because the product is only in local point contact.

And thirdly: part of products improve the product strength by increasing the wall thickness of the products or using modified materials, and the effect is general and the production cost is greatly increased.

Disclosure of Invention

The invention aims to solve the problem of insufficient strength of a rotational molding product, and further provides a rotational molding strengthening support body which is formed in a hollow cavity of the rotational molding product while the rotational molding product is formed through a rotational molding process, and a rotational molding product with the rotational molding strengthening support body. The rotational molding product has excellent deformation resistance and very good strength, and can further realize the function of area partition or cavity division in the product according to actual requirements.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the rotational molding reinforced support body is characterized in that a rotational molding process is adopted to be synchronously molded with the product wall of a rotational molding product at one time, and the support body is positioned in a hollow cavity of the rotational molding product; comprises a supporting base body and a rotational molding body rotationally molded on the surface layer of the supporting base body; the rotational molding body of the surface layer of the supporting base body and the product wall of the rotational molding product are of an integrated structure formed by rotational molding at one time.

The supporting base body consists of a middle main body part and two end root base parts, and the middle main body part is connected between two inner walls of the rotational molding product and can play the roles of bearing pressure, local sealing, separating and separating the hollow cavity; the base parts at the two ends are respectively embedded in the two inner walls of the rotational molding product through a rotational molding process so as to stably and firmly connect the support matrix to the inner walls of the rotational molding product;

accordingly, in order to achieve better bonding between the support matrix and the rotomoulded article, the width of the two end root bases of the support matrix should be greater than the thickness of the main body part, so that the two end root bases of the support matrix satisfy the bonding firmness between the two end root bases and the inner wall of the product.

Further, a certain distance is reserved between the end surfaces of the root bases at the two ends of the support matrix and the outer wall of the rotational molding product; the distance can completely wrap the root base of the supporting base body in the rotational molding product on one hand, and ensures the connection tightness between the root base and the rotational molding product on the other hand, and the distance is smaller than 1.5 times of the wall thickness of the product through practice verification;

the supporting base body adopts structures such as plates, strips, rods, columns and the like made of plastics, metals or other non-metallic materials or a frame body structure formed by splicing, welding or bundling the structures such as the plates, the strips, the rods, the columns and the like;

when the supporting base body is made of metal materials, a plastic coating layer can be coated on the surface of the supporting base body in advance, and the plastic coating layer can protect the supporting base body, prevent corrosion and ensure the service life;

the number of the supporting matrixes can be set according to actual application scenes and use requirements;

the supporting base body is of a plate-shaped structure, and the plate-shaped structure can be designed in a hollow-out mode or a full-plate mode according to specific application scenes.

The rotational molding product is characterized in that at least one rotational molding strengthening support body is arranged in the cavity body, the rotational molding strengthening support body comprises a support base body and a rotational molding body rotationally molded on the surface layer of the support base body, the support base body is composed of a middle main body part and two end base parts, and the middle main body part is connected between two inner walls of the rotational molding product and can play the roles of bearing, local sealing, partition and binning on the cavity body; the base parts at the two ends are respectively embedded in the two inner walls of the rotational molding product through rotational molding bodies on the surface layers of the base parts so as to stably and firmly connect the support matrix to the inner walls of the rotational molding product.

The rotational molding strengthening support body is synchronously molded with the product wall of the rotational molding product at one time through the rotational molding process, so that the problem of insufficient strength of the rotational molding product can be solved, and the functions of local sealing, bin and cavity division and partition addition of the product can be realized. More importantly, the deformation resistance of the product is improved, and other properties of the product are not damaged or influenced. The support matrix made of rigid materials is embedded into the rotational molding product through the rotational molding process, the one-step rotational molding forming process is adopted, the process is efficient and reliable, the excellent performance of the rigid materials is integrated into the rotational molding materials, the defect that the tensile strength and the compressive strength of plastics are insufficient is effectively overcome, the strength and the reliability of the product are greatly improved, the application field and the scene range of the rotational molding product are widened, and the rotational molding product has wide practicability.

Drawings

FIG. 1: a schematic structural diagram of the front side of the support base body;

FIG. 2: the left side view of FIG. 1;

FIG. 3: a schematic view of a support substrate and mold mounting structure;

FIG. 4: a second schematic view of a supporting substrate and a mold mounting structure;

FIG. 5: a third schematic view of a supporting substrate and a mold mounting structure;

in the figure, 1, a support base body, 10, a main body part, 11, a root base part, 11a, an end face, 2, a rotational molding body, 30, a product wall, 31, a hollow cavity, 4, a nonmagnetic plate, 41, an upper die, 42, a lower die, 5, a fixing bolt, 51, a nonmagnetic metal rod, 52, a metal shaft, 6, a fixing nut, 7, a nut, 71, a magnetic body, 8, a high-temperature resistant magnet, 9 and a threaded hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.