CN212147524U

CN212147524U - Dry expanding machine

Info

Publication number: CN212147524U
Application number: CN201921654492.0U
Authority: CN
Inventors: 高金明; 钱玉兵
Original assignee: Shenzhen Dadu Industry Co Ltd
Current assignee: Shenzhen Dadu Industry Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-12-15
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to an equipment that the pyrocondensation pipe was made, specifically speaking relate to a dry machine that expands, including conveyor, heating device, expansion mould and drive mechanism, its characterized in that: the expansion mould comprises an expansion part, one end of the expansion part is fixedly connected with a part to be expanded, and the other end of the expansion part is fixedly connected with a cooling demoulding part; when the expansion device works, a pipe to be expanded penetrates upwards from the lower part between two front conveying rollers of the front conveying mechanism, then penetrates downwards from the upper part between two rollers of the main conveying mechanism, then enters the heating device to be heated, enters the expansion die after being heated to the expansion temperature, is expanded and cooled on the expansion die, and is pulled out by the traction mechanism to obtain a finished product; the utility model discloses simple structure, the expanding speed is fast, and convenient operation is swift, and the expansion process is stable, reduces the waste of material, has practiced thrift the cost.

Description

Dry expanding machine

Technical Field

The utility model relates to a device for manufacturing heat shrink tubes, in particular to a dry expanding machine.

Background

The existing thermal shrinkage pipe dry expanding machine generally comprises a conveying mechanism, a heating device, an expanding die and a traction mechanism, wherein a pipe to be expanded firstly passes through the conveying mechanism, enters the heating device for heating, enters the expanding die after reaching an expansion temperature, is expanded in the expanding die, and is drawn out by the traction mechanism after being cooled. The heating device is mainly a glycerol heating device, glycerol is used as a heating medium, and the glycerol is selected as the heating medium for two main reasons, wherein the glycerol is dissolved in water and is convenient to clean, the decomposition temperature of the glycerol is high and reaches more than 200 ℃, the expansion temperature of the heat-shrinkable tube is generally 120-150 ℃, and is far lower than the decomposition temperature of the glycerol. However, during the expansion process, water is inevitably mixed into the glycerol, the decomposition temperature is reduced, a large amount of smoke is easily generated, the environment and equipment are polluted, and the physical and psychological health of operators is not facilitated. In addition, glycerin attached to the surface of the heat-shrinkable tube needs to be washed by water, so that a large amount of water resources are wasted, and the glycerin enters water to pollute the water quality and is not beneficial to environmental protection; a small number of electric heating devices generally adopt mica heaters, the heating efficiency is low, the energy is wasted, in addition, the existing electric heating device expanding machine runs in a single machine mode, a machine set is not formed, the operation is inconvenient, the number of workers is large, the labor cost is high, the production efficiency is low, when the expanding machine is operated, the expanding machine needs to climb a ladder behind the expanding machine to be operated, the operation is inconvenient, the expanding machine is unsafe, and personal accidents are easy to happen.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a dry expanding machine to solve the problem that proposes in the above-mentioned background art, the utility model discloses simple structure, the expansion rate is fast, and convenient operation is swift.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a dry expanding machine comprises a conveying device, a heating device, an expanding die and a traction mechanism; the expansion mould and the heating device are aligned up and down, the conveying device comprises a front conveying mechanism and a main conveying mechanism, the main conveying mechanism is aligned up and down with the center of the heating device, the traction mechanism and the expansion mould, the main conveying mechanism is of a roller structure or a conveying belt structure, and the expansion mould comprises an expansion part, a part to be expanded, which is arranged at the upper end of the expansion part, and a cooling demoulding part which is arranged at the lower end of the expansion part.

Further, the heating device is provided with a heating cavity at the innermost layer, a far infrared heater is arranged around the heating cavity and arranged on the outermost heating shell of the heating device, and a heat insulation layer is filled between the far infrared heater and the heating shell.

Further, the far infrared heater comprises an inner cavity wall made of silicon carbide and a resistance wire wound on the inner cavity wall.

Furthermore, the main conveying mechanism is arranged on one side of the front conveying mechanism and has the same height.

The utility model has the advantages that:

the utility model relates to a dry expanding machine, during operation, a pipe to be expanded passes through from the lower part between two front conveying rollers of a front conveying mechanism to the upper part, then passes through from the upper part between two rollers of a main conveying mechanism to the lower part, then is heated in a heating device, enters an expanding die after being heated to an expanding temperature, is expanded and cooled on the expanding die, and is pulled out a finished product through a traction mechanism; the utility model discloses simple structure, the expanding speed is fast, and convenient operation is swift.

Drawings

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

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

FIG. 2 is a schematic view of the structure of the mid-far infrared heater of the present invention;

in the figure, a conveying device 1; a pre-conveying mechanism 11; a main conveying mechanism 12; a heating device 2; a heating chamber 21; a far infrared heater 22; an inner lumen wall 221; resistance wire 222; an insulating layer 23; a heating housing 24; expanding the mold 3; a portion to be expanded 31; the expanding portion 32; cooling the mold release part 33; a traction mechanism 4.

Detailed Description

As shown in fig. 1, a dry expanding machine comprises a conveying device 1, a heating device 2, an expanding die 3 and a traction mechanism 4; the expansion mould 3 and the heating device 2 are aligned up and down, the conveying device 1 comprises a front conveying mechanism 11 and a main conveying mechanism 12, the main conveying mechanism 12 is aligned up and down with the center of the heating device 2, the traction mechanism 4 and the expansion mould 3, the main conveying mechanism 12 is of a roller structure or a conveyer belt structure, and the expansion mould comprises an expansion part, a part to be expanded, which is arranged at the upper end of the expansion part, and a cooling demoulding part which is arranged at the lower end of the expansion part.

When the expansion device works, a pipe to be expanded penetrates upwards from the lower part between two front conveying rollers of the front conveying mechanism 11, then penetrates downwards from the upper part between two rollers of the main conveying mechanism 12, then enters the heating device 2 to be heated, enters the expansion die 3 after being heated to the expansion temperature, is expanded and cooled on the expansion die 3, and is pulled out by the traction mechanism 4 to form a finished product; the expansion die 3 comprises an expansion part 32, a part to be expanded 31 arranged at the upper end of the expansion part 32 and a cooling demolding part 33 arranged at the lower end of the expansion part 32; the pipe to be expanded 31 is in a small-diameter columnar shape, so that the heated pipe to be expanded can be smoothly inserted, the expanding part 32 is in a conical columnar shape, and after the pipe to be expanded in the small-diameter shape is expanded through the expanding part 32, the cooling demolding part 33 is in a large-diameter columnar shape, so that the cooling demolding of the expanded pipe after the pipe expansion can be facilitated. The utility model discloses simple structure, the expanding speed is fast, and convenient operation is swift.

As shown in fig. 1, the innermost layer of the heating device 2 is a heating cavity 21, a far infrared heater is arranged around the heating cavity 21, a heating shell 24 is arranged at the outermost layer of the heating device 2, and an insulating layer 23 is filled between the far infrared heater 22 and the heating shell 24; in this embodiment, the center of the cylindrical heating device 2 is the heating cavity 21, the far infrared heater 22 surrounding the heating cavity 21 can heat the heating cavity 21, and the heat preservation layer 23 is used for preserving heat when the far infrared heater 22 is heated, so that the temperature in the heating cavity 21 is raised, and the expansion pipe can be rapidly heated and softened.

As shown in fig. 1 and 2, the far infrared heater 22 includes an inner cavity wall 221 made of silicon carbide and a resistance wire 222 wound on the inner cavity wall 221; in this embodiment, the inner cavity wall 221 made of silicon carbide is uniformly and smoothly heat-conducting, and is not easily adhered to the pipe to be expanded after being heated and softened, and the resistance wire 222 uniformly wound on the inner cavity wall 221 is beneficial to uniformly increasing the temperature in the heating cavity 21.

As shown in fig. 1, the main conveying mechanism 12 is provided on the side of the pre-conveying mechanism 11 and has the same height; in this embodiment, the pipe to be expanded passes upward between the two front conveying rollers of the front conveying mechanism 11, then passes downward between the two rollers of the main conveying mechanism 12, and then enters the heating device 2 to be heated; the same height facilitates the pre-conveyor 11 feeding the tube to be expanded into the main conveyor 12.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A dry expanding machine comprises a conveying device (1), a heating device (2), an expanding die (3) and a traction mechanism (4); the expansion die (3) and the heating device (2) are aligned up and down, the conveying device (1) comprises a front conveying mechanism (11) and a main conveying mechanism (12), the main conveying mechanism (12) is aligned up and down with the center of the heating device (2), the traction mechanism (4) and the expansion die (3), and the main conveying mechanism (12) is of a roller structure or a conveying belt structure and is characterized in that: the expansion die (3) comprises an expansion part (32), a part to be expanded (31) arranged at the upper end of the expansion part (32) and a cooling demolding part (33) arranged at the lower end of the expansion part (32).

2. A dry expanding machine according to claim 1, wherein: the innermost layer of the heating device (2) is a heating cavity (21), a far infrared heater is arranged around the heating cavity (21), a heating shell (24) arranged on the outermost layer of the heating device (2), and a heat insulation layer (23) is filled between the far infrared heater (22) and the heating shell (24).

3. A dry expanding machine according to claim 2, wherein: the far infrared heater (22) comprises an inner cavity wall (221) made of silicon carbide and a resistance wire (222) wound on the inner cavity wall (221).

4. A dry expanding machine according to claim 1, wherein: the main conveying mechanism (12) is arranged on one side of the front conveying mechanism (11) and has the same height.