CN113715137A

CN113715137A - Forming die and forming method for elbow heat-preservation cotton

Info

Publication number: CN113715137A
Application number: CN202110912815.7A
Authority: CN
Inventors: 卢志涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-11-30

Abstract

The invention belongs to the technical field of heat preservation pipes, and particularly relates to a forming die and a forming method of elbow heat preservation cotton, wherein the forming die comprises a die body and is characterized in that: the die body comprises a female die and a male die, an arc-shaped groove is formed in the female die, an included angle of 90 degrees is formed between the starting end and the ending end of the groove, the cross section of the inner wall of the groove is an arc surface, and the upper end surface of the groove is higher than the circle center of the arc surface; the male die and the female die are arranged oppositely, and a specific gap is arranged between the male die and the female die. The invention can improve the processing efficiency, reduce the material loss and simultaneously improve the heat preservation performance.

Description

Forming die and forming method for elbow heat-preservation cotton

Technical Field

The invention belongs to the technical field of heat preservation pipes, and particularly relates to a forming die and a forming method of elbow heat preservation cotton.

Background

The heat insulation pipe is a short name of heat insulation pipeline, is used for conveying liquid, gas and other media, and is widely applied to heat insulation of pipelines of petroleum, chemical engineering, aerospace, military, central heating, municipal administration and the like. The heat preservation pipe is usually composed of an internal conveying pipe, heat preservation cotton and a shell, and in the actual installation and use process, the heat preservation sleeve of the straight pipe is formed by wrapping heat preservation materials on the straight pipe, baking the straight pipe to enable the straight pipe to be solidified, and then dividing the straight pipe into two parts to be assembled and fixed on site. When the elbow insulating pipe needs to be wrapped with the insulating sleeve, the straight pipe insulating sleeve is cut into horseshoe-shaped thin blocks by adopting an inclined surface cutting method in the prior art, and then the elbow insulating sleeve is assembled on site. The method has high operation requirements on workers and high rejection rate, thereby causing a great deal of waste of raw materials, and having complex processing and low work efficiency; meanwhile, due to the fact that a plurality of blocks are spliced, the number of spliced seams is large, the heat insulation performance of the bent pipe is seriously affected, and the heat insulation performance is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the forming die and the forming method of the elbow heat-insulation cotton can improve the processing efficiency, reduce the material loss and improve the heat-insulation performance.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a cotton forming die of elbow heat preservation, includes the mould body, its characterized in that: the die body comprises a female die and a male die, an arc-shaped groove is formed in the female die, an included angle of 90 degrees is formed between the starting end and the ending end of the groove, the cross section of the inner wall of the groove is an arc surface, and the upper end surface of the groove is higher than the center of the arc surface; the male die and the female die are arranged oppositely, and a specific gap is arranged between the male die and the female die.

The invention also provides a molding method of the elbow heat-preservation cotton, which is characterized by comprising the following steps:

(1) laying the heat-insulating material in the concave mould;

(2) placing the male die in the female die, and pressing the heat-insulating material tightly;

(3) sending the die body into an oven for baking at the baking temperature of 600 +/-50 ℃;

(4) and taking out the mold body, and demolding to obtain the elbow heat-preservation cotton.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the elbow heat-insulation cotton is manufactured by adopting the mode of the female die and the male die, the production process is simple and easy to operate, when the elbow heat-insulation cotton is used, only two pieces of heat-insulation cotton are buckled on the conveying bent pipe in a butt joint mode, and the outside of the elbow heat-insulation cotton is fixed by the shell, so that the production efficiency can be greatly improved, and meanwhile, the material is hardly lost.

2. The upper end surface of the groove is higher than the circle center of the arc surface, and when the heat insulation pipe is actually installed, the parts higher than the circle center of the arc surface are overlapped together, so that a splicing gap does not exist between the two pieces of heat insulation cotton, and the heat insulation performance of the bent pipe part is effectively guaranteed.

Drawings

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

fig. 2 is a schematic sectional view taken along line a-a in fig. 1.

Labeled as:

1. a female die; 2. male die, 3, groove.

Detailed Description

The invention will be further described with reference to the following examples:

as shown in fig. 1-2, the invention provides a forming die for elbow heat-preservation cotton, which comprises a die body, wherein the die body comprises a female die 1 and a male die 2, an arc-shaped groove 3 is formed in the female die 1, and an included angle of 90 degrees is formed between the starting end and the ending end of the groove 3. The cross section of the inner wall of the groove 3 is an arc surface, and the upper end surface of the groove 3 is higher than the center of the arc surface. The male die 2 and the female die 1 are arranged oppositely, and a specific gap is formed between the male die 2 and the female die 1. In order to ensure the strength of the die, the die body is made of metal.

Based on the mould, the invention also provides a forming method of the elbow heat-preservation cotton, which comprises the following steps:

(1) laying a heat-insulating material in the female die 1;

(2) placing the male die 2 in the female die 1, and pressing the heat-insulating material tightly;

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention may be made without departing from the technical spirit of the present invention.

Claims

1. The utility model provides a cotton forming die of elbow heat preservation, includes the mould body, its characterized in that: the die body comprises a female die and a male die, an arc-shaped groove is formed in the female die, an included angle of 90 degrees is formed between the starting end and the ending end of the groove, the cross section of the inner wall of the groove is an arc surface, and the upper end surface of the groove is higher than the center of the arc surface; the male die and the female die are arranged oppositely, and a specific gap is arranged between the male die and the female die.

2. The method for molding the elbow insulation cotton of the mold according to claim 1, comprising the following steps:

(1) laying the heat-insulating material in the concave mould;