阅读说明：本技术 定型模具 (Shaping die ) 是由 张明德 于 2020-07-17 设计创作，主要内容包括：本发明公开一种定型模具,包括上模、下模,上模和下模具有型腔,上模的型腔和下模的型腔匹配形成工件的截面形状；所述上模和下模均设置冷却水套,冷却水套设置进水管和出水管；所述上模和下模均设置真空腔,所述真空腔与型腔表面间设置多条气道,所述气道为条形,且在型腔表面均匀排列；所述真空腔与真空管连接,真空管与真空泵连接。本发明的优点：可精确控制护角带的表面尺寸及精度,防止凹凸不平,且护角带内部具有一定的间隙,可使得护角带具有一定的弹性。(The invention discloses a shaping mold which comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are provided with cavities, and the cavities of the upper mold and the lower mold are matched to form the cross-sectional shape of a workpiece; the upper die and the lower die are both provided with cooling water jackets, and the cooling water jackets are provided with a water inlet pipe and a water outlet pipe; the upper die and the lower die are both provided with vacuum cavities, a plurality of air passages are arranged between the vacuum cavities and the surfaces of the cavities, the air passages are strip-shaped and are uniformly arranged on the surfaces of the cavities; the vacuum cavity is connected with a vacuum tube, and the vacuum tube is connected with a vacuum pump. The invention has the advantages that: the surface size and the precision of the angle bead belt can be accurately controlled, unevenness is prevented, a certain gap is formed in the angle bead belt, and the angle bead belt can have certain elasticity.)

1. A shaping mold comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are provided with cavities, and the cavities of the upper mold and the lower mold are matched to form the cross-sectional shape of a workpiece; the upper die and the lower die are both provided with cooling water jackets, and the cooling water jackets are provided with a water inlet pipe and a water outlet pipe; the method is characterized in that: the upper die and the lower die are both provided with vacuum cavities, a plurality of air passages are arranged between the vacuum cavities and the surfaces of the cavities, the air passages are strip-shaped and are uniformly arranged on the surfaces of the cavities; the vacuum cavity is connected with a vacuum tube, and the vacuum tube is connected with a vacuum pump.

2. The sizing die as recited in claim 1, wherein: the air passages are parallel to each other.

3. The sizing die as recited in claim 1, wherein: the upper die and the lower die are connected through hinges.

4. A method of using the sizing die of claim 1, comprising: the corner protection belt produced by the extruder firstly enters the shaping mold, then passes through other shaping molds and then passes through the cooling water tank, and finally a product is produced.

Technical Field

The invention relates to the field of machinery, in particular to a shaping die for a corner protecting belt.

Background

The angle protecting belt is used for protecting the edge part of the steel coil and preventing the steel coil from being damaged by external force during transportation; along with the requirement of more and more precision, the protection of coil of strip also receives more and more attention. The surface of the existing angle bead belt is uneven, and the surface of a steel coil is inevitably damaged when the steel coil is bound; in addition, the height of the angle bead belt is generally equal to that of the surface of the high-pressure steel coil, and the angle bead belt firstly collides with other objects when colliding, so that the angle bead belt has certain elasticity, and the existing angle bead belt has no elasticity, so that the use requirement cannot be met.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a shaping mold, which can precisely control the surface size and precision of an angle bead belt, prevent unevenness, and provide a certain gap inside the angle bead belt, so that the angle bead belt has a certain elasticity; the specific technical scheme is as follows:

a shaping mold comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are provided with cavities, and the cavities of the upper mold and the lower mold are matched to form the cross-sectional shape of a workpiece; the upper die and the lower die are both provided with cooling water jackets, and the cooling water jackets are provided with a water inlet pipe and a water outlet pipe; the upper die and the lower die are both provided with vacuum cavities, a plurality of air passages are arranged between the vacuum cavities and the surfaces of the cavities, the air passages are strip-shaped and are uniformly arranged on the surfaces of the cavities; the vacuum cavity is connected with a vacuum tube, and the vacuum tube is connected with a vacuum pump.

The air passages are parallel to each other.

The upper die and the lower die are connected through hinges.

The invention further discloses a using method of the shaping mold, the corner protecting belt produced by the extruder firstly enters the shaping mold, and then passes through other shaping molds and then passes through a cooling water tank to finally produce a product.

The invention has the advantages that: under the action of vacuum adsorption, the surface of the angle bead belt is in close contact with the surface of the cavity to form certain pre-pressure, so that the surface of the angle bead belt overcomes the defect of unevenness along with the reduction of temperature; because the surfaces of the two sides of the angle bead belt are provided with the air passages for vacuum adsorption, the angle bead belt which is just entered into the shaping mould by the extrusion mould is not completely cooled and shaped, and the surfaces of the two sides of the angle bead belt are firstly cooled because of being tightly attached to the cavity, so the edge parts of the angle bead belt cooled at the two sides can be close to the cavity through the adsorption effect of the air passages, a certain gap is formed in the angle bead belt, and the pores in the angle bead belt are finally formed along with the reduction of the temperature; these voids will have some elasticity and provide a cushioning effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view taken along the line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at the location B-B of FIG. 2;

FIG. 4 is a schematic illustration of pore formation;

fig. 5 is a schematic view of a production line using the sizing die of the present invention.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings, and as shown in the figures, the present invention includes an upper die 6 and a lower die 7, the upper die and the lower die have a cavity 8, and the cavity of the upper die and the cavity of the lower die are matched to form the cross-sectional shape (the cross-section of the embodiment is n-type) of a workpiece 10; the upper die and the lower die are both provided with cooling water jackets 14, and the cooling water jackets are provided with a water inlet pipe 9 and a water outlet pipe 10; the upper die and the lower die are both provided with a vacuum cavity 15, a plurality of air passages 13 are arranged between the vacuum cavity and the surface of the cavity, the air passages are strip-shaped and are uniformly arranged on the surface of the cavity; the vacuum chamber is connected with a vacuum tube 12, and the vacuum tube 12 is connected with a vacuum pump.

The air passages 13 are parallel to each other.

And the upper die 6 and the lower die 7 are connected through a hinge 11.

The invention further discloses a using method of the sizing die, raw materials entering the extruder 2 from the hopper 1 are heated in the extruder and then extruded by the screw, the extruded angle bead belt firstly enters the sizing die disclosed by the invention, and then passes through other sizing dies after being sized, and then passes through the cooling water tank, and finally a product is produced. Other sizing dies herein do not include the vacuum tube and air channel structure of the present invention.

The raw materials of the embodiment are composite materials mainly made of polyethylene, the melting point of the composite materials is 115 ℃, the outlet temperature of an extrusion die is 120 ℃, therefore, the corner protector belt which just enters a shaping die is not cooled and shaped, when the edges of two sides of the corner protector belt are in close contact with a cavity under the action of vacuum suction, the surface of the corner protector belt is rapidly cooled under the influence of the die to form a hard shell, and the hard shell is close to the cavities of the two sides, so that pores are formed inside the corner protector belt; and the hard shell is tightly contacted with the cavity, so that the defect of unevenness is overcome.