CN213441058U

CN213441058U - Extrusion die for producing double-wall corrugated pipe

Info

Publication number: CN213441058U
Application number: CN202022397558.1U
Authority: CN
Inventors: 黄华; 黄安淳; 黄群华; 李选; 白新武; 郑知秀; 黄广豪
Original assignee: Guangdong Yulong Pipe Co ltd
Current assignee: Guangdong Yulong Pipe Co ltd
Priority date: 2020-10-24
Filing date: 2020-10-24
Publication date: 2021-06-15
Anticipated expiration: 2030-10-24

Abstract

The application relates to an extrusion tooling of double-walled bellows tubular product production usefulness belongs to bellows production technical field, and it includes: a mold body; a cavity arranged in the middle of the end surface at one side of the die body; an inner plastic flow cavity which is arranged on the outer side surface of the die body in a surrounding way and is close to one side of the cavity opening; encircle to mould including offering and flow the chamber and keep away from the outer chamber that flows of moulding of cavity opening one side, wherein, be provided with on the mould body and be used for the separation to mould outward and flow the chamber opening and mould in and flow the chamber opening and extrude thermoplastic separating mechanism, separating mechanism includes: the air blowing cavity is annularly arranged on the die body; and the heat radiation fan is annularly arranged on the inner wall of the blowing cavity, wherein the blowing cavity is arranged on the outer side surface of the die body and is positioned between the opening of the inner plastic flow cavity and the opening of the outer plastic flow cavity. The application provides an extrusion tooling of double-walled bellows tubular product production usefulness can carry out the forced air cooling to the double-walled bellows raw materials of extrusion tooling output to make the double-walled bellows raw materials separate each other at the extrusion tooling output.

Description

Extrusion die for producing double-wall corrugated pipe

Technical Field

The application relates to the field of corrugated pipe production, in particular to an extrusion die for producing double-wall corrugated pipe materials.

Background

The double-wall corrugated pipe is a novel pipe with an outer wall with an annular structure and a smooth inner wall, and is commonly used in drainage pipes and protection pipes of power cables in municipal engineering and blow-off pipes in the industries of chemical engineering, medicine, environmental protection and the like. Although currently used only in developed countries such as europe and the united states, the production of double-wall corrugated pipes is mostly performed by extrusion dies, and is inevitably promoted and developed in China in the future due to excellent performance and relatively low cost.

When the double-wall corrugated pipe raw materials are extruded from the extrusion die, the raw materials are adhered to each other, so that the quality of the double-wall corrugated pipe is influenced to a certain extent.

In view of the above problems, the applicant believes that, during the use of the double-wall corrugated pipe extrusion die, since the temperature of the raw materials extruded from the extrusion die is high, the raw materials are easily adhered to each other, thereby damaging the structure of the double-wall corrugated pipe.

SUMMERY OF THE UTILITY MODEL

In order to reduce the phenomenon of adhesion each other when double-walled bellows raw materials are extruded from extrusion tooling, this application provides an extrusion tooling of double-walled bellows tubular product production usefulness, can carry out the forced air cooling to the double-walled bellows raw materials of extrusion tooling output end to make double-walled bellows raw materials separate each other at extrusion tooling output end, and then improved the quality of double-walled bellows.

The application provides a pair of extrusion tooling of double-walled bellows tubular product production usefulness adopts following technical scheme:

an extrusion die for producing a double-walled corrugated tubing, comprising: a mold body; the cavity is formed in the middle of the end face of one side of the die body; the inner plastic flow cavity is arranged on the outer side surface of the die body in a surrounding mode and is close to one side of the cavity opening; encircle to set up interior mould a class chamber and keep away from the outer class chamber that moulds of cavity opening one side, be provided with on the mould body and be used for the separation outer mould a class chamber opening with interior mould a class chamber opening and extrude thermoplastic separating mechanism, separating mechanism includes: the air blowing cavity is annularly arranged on the die body; and the heat dissipation fan is annularly arranged on the inner wall of the blowing cavity, wherein the blowing cavity is arranged on the outer side surface of the die body and is positioned between the opening of the inner plastic flow cavity and the opening of the outer plastic flow cavity.

Through adopting above-mentioned technical scheme, can cool off the thermoplasticity of blowing the chamber opening to reduce and mould each other's adhesion between the thermoplasticity extruded in class chamber and the thermoplasticity extruded in class chamber outward.

Preferably, one end of the mold body near the cavity opening is provided with a cooling portion for further cooling the double-wall corrugated pipe.

Through adopting above-mentioned technical scheme, can further accelerate the cooling shaping of the thermoplasticity of extruding from outer plastic flow chamber opening and interior plastic flow chamber opening through cooling portion.

Preferably, the cooling part includes: the cooling pipe is arranged on one side of the output end of the die body; the mounting cavity is formed in the middle of one end, far away from the die body, of the cooling pipe; the water cooling piece is arranged in the mounting cavity; and the auxiliary water cooling piece is arranged in the mounting cavity.

Through adopting above-mentioned technical scheme, from moulding the thermoplasticity of flowing the chamber opening and moulding the chamber opening and extrude in and can move along the cooling tube outside of tubes face under the power effect that the mould body provided, the water-cooling piece that sets up simultaneously in the installation cavity and supplementary water-cooling piece have reduced the area of cooling portion.

Preferably, the water cooling member includes: the water cooling cavity is arranged in the wall of the cooling pipe in a surrounding manner; the water tank is arranged on the inner wall of the installation cavity; one end of the water inlet pipe penetrates through the inner wall of the cooling pipe and is communicated with the water cooling cavity; one end of the water outlet pipe penetrates through the inner wall of the cooling pipe and is communicated with the water cooling cavity; the water inlet pump is arranged on the inner wall of the installation cavity and is connected with one end, far away from the water cooling cavity, of the water inlet pipe; the water outlet pump is arranged on the inner wall of the installation cavity and connected with one end, far away from the water cooling cavity, of the water outlet pipe; the first hose is arranged on the water tank, and one end of the first hose, which is far away from the water tank, is connected with the input end of the water inlet pump; and the second hose is arranged on the water tank, and one end of the second hose, which is far away from the water tank, is connected with the output end of the water outlet pump.

Through adopting above-mentioned technical scheme, when the power of intake pump and outlet pump was linked together, hydroenergy in the water tank can be in the water-cooling chamber in the cooling tube along first hose and inlet tube entering successively under the drive of intake pump, water in the water-cooling chamber is in the water tank is got back to along outlet pipe and second hose under the drive of outlet pump simultaneously to realize the hydrologic cycle of water between water tank and water-cooling reinforce, the heat of cooling tube outside face has been walked away to the circulating water, the cooling effect of cooling tube to the heat plasticity attached to the cooling tube outer wall has been improved.

Preferably, the auxiliary water cooling member includes: a negative pressure hole formed on the outer side surface of the cooling pipe; one end of the negative pressure pipe penetrates through the inner wall of the cooling pipe and is communicated with the negative pressure hole; and the negative pressure machine is arranged on the inner wall of the installation cavity, wherein one end, far away from the negative pressure hole, of the negative pressure pipe is communicated with the negative pressure machine.

By adopting the technical scheme, when the negative pressure machine is started, the negative pressure machine can adsorb the thermoplastic attached to the outer side surface of the cooling pipe through the negative pressure pipe and the negative pressure hole, so that the contact area between the thermoplastic and the cooling pipe is increased, and the heat dissipation efficiency of the cooling pipe is improved.

Preferably, the outer side surface of the cooling pipe is provided with anti-sticking lines for preventing the double-wall corrugated pipe to be formed from being stuck on the outer side surface of the cooling pipe.

Through adopting above-mentioned technical scheme, can reduce the adhesion between the thermoplasticity of adhering to on the cooling tube outside face through the antiseized line of cooling tube outside face mountain and the cooling tube outside.

Preferably, the anti-sticking texture comprises: and a plurality of grooves which are circumferentially arranged on the outer side surface of the cooling pipe.

Through adopting above-mentioned technical scheme, can make cooling tube outside of tubes face unevenness through encircleing the recess of seting up at cooling tube outside of tubes face, reduced the area of contact of cooling tube outside of tubes face and heat plastics to realize antiseized effect, it is lower to set up the recess cost simultaneously, has reduced the manufacturing cost of cooling tube.

Preferably, the top of the water tank is provided with a heat dissipation hole.

Through adopting above-mentioned technical scheme, the louvre at water tank top can be with the absorptive some heat of aquatic through evaporating the drainage water tank, can be used as the moisturizing hole of water tank simultaneously, and the convenience is traded water to the water tank.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the cooling molding of the thermoplastic extruded from the opening of the outer plastic flow cavity can be accelerated by air cooling, so that the adhesion with the thermoplastic extruded from the opening of the inner plastic flow cavity is reduced, and the quality of the double-wall corrugated pipe is improved;

2. the heat dissipation of the double-wall corrugated pipe on the outer side surface of the cooling pipe is further accelerated through the water circulation in the water cooling cavity and the water tank;

3. through the negative pressure hole, the negative pressure pipe connected with the negative pressure machine and the negative pressure hole, the inner wall of the double-wall corrugated pipe can be well attached to the cooling pipe in the movement process of the double-wall corrugated pipe on the outer surface of the cooling pipe, and the cooling efficiency of the cooling pipe is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure in an embodiment of the present application;

FIG. 2 is a cross-sectional view of a mold jacket in an embodiment of the present application;

fig. 3 is a schematic view of the inner structure of the cooling tube in the embodiment of the present application.

Description of reference numerals: 11. an inner rotating body; 12. a cavity; 13. an outer rotating body; 14. sleeving a mold sleeve; 15. an inner plastic flow cavity; 16. an outer plastic flow cavity; 17. an inner feed pipe; 18. an outer feed pipe; 21. a heat radiation fan; 31. a cooling tube; 32. a mounting cavity; 331. a water-cooled cavity; 332. a water tank; 3321. heat dissipation holes; 333. a water inlet pipe; 334. a water outlet pipe; 335. a water inlet pump; 336. discharging the water pump; 337. a first hose; 338. a second hose; 341. a negative pressure machine; 342. a negative pressure hole; 343. a negative pressure tube; 41. and (4) a groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an extrusion die for producing a double-wall corrugated pipe.

Referring to fig. 1, an extrusion mold for producing a double-wall corrugated pipe comprises an inner rotating body 11, wherein a cavity 12 is formed in the middle of the end surface of one side of the inner rotating body 11, which is far away from a feeding pipe, an outer rotating body 13 is sleeved on the outer side of the inner rotating body 11, and an inner plastic flow cavity 15 is formed between the outer rotating body 13 and the inner rotating body 11.

In addition, a mold jacket 14 is sleeved outside the outer rotating body 13, and an outer plastic flow cavity 16 is formed between the mold jacket 14 and the outer rotating body 13. An inner feeding pipe 17 and an outer feeding pipe 18 are arranged on the die outer sleeve 14, wherein the inner feeding pipe 17 penetrates through the outer rotating body 13 and is communicated with the inner plastic flow cavity 15, and the outer feeding pipe 18 penetrates through the die outer sleeve 14 and is communicated with the outer plastic flow cavity 16.

The inner and outer

plastic flow chambers

15 and 16 can be supplied with thermoplastic for the production of double-walled corrugated pipes via the inner and

outer feed pipes

17 and 18, respectively.

In addition, the opening has all been seted up on mould overcoat 14 to the one end that interior plastic flow chamber 15 kept away from interior inlet pipe 17 and the one end that outer inlet pipe 18 was kept away from to outer plastic flow chamber 16, wherein, interior plastic flow chamber 15 opening encircles and sets up in mould overcoat 14 lateral surface and is close to cavity 12 opening one side, outer plastic flow chamber 16 opening encircles and sets up in interior plastic flow chamber 15 keeping away from cavity 12 opening one side, and simultaneously, the position that lies in between interior plastic flow chamber 15 opening and the outer plastic flow chamber 16 opening on mould overcoat 14 lateral surface has seted up the blowing chamber, install cooling fan 21 at the blowing intracavity, cooling fan 21 is towards the air-out of blowing chamber opening direction.

When the extrusion die is in a working state, the thermoplastic extruded from the opening of the outer plastic flow cavity 16 and the thermoplastic extruded from the opening of the inner plastic flow cavity 15 are mutually overlapped to form a double-layer structure after passing through the opening of the blowing cavity, and the air output by the heat dissipation fan 21 can cool the thermoplastic flowing out of the outer plastic flow cavity 16, so that the thermoplastic of the outer plastic flow cavity 16 and the thermoplastic of the inner plastic flow cavity 15 are prevented from being adhered to each other to a certain extent.

In addition, for further accelerating the cooling shaping of double-walled bellows, install cooling body at the extrusion tooling output, cooling body is including installing the cooling tube 31 in mould overcoat 14 one end, it is equipped with water-cooling chamber 331 to encircle in the cooling tube 31 pipe wall, negative pressure hole 342 has been seted up to the lateral surface equipartition of cooling tube 31, the figure of negative pressure hole 342 specifically is three in this embodiment, negative pressure hole 342 equidistance encircles and establishes on cooling tube 31 surface, keep away from mould overcoat 14 middle part at cooling tube 31 and seted up installation cavity 32.

Wherein, a water tank 332, a water inlet pump 335 and a water outlet pump 336 are fixed on the inner wall of the mounting cavity 32, and the water tank 332 is cuboid. The top surface of the water tank 332 is provided with a heat radiation hole 3321, one side surface of the water tank 332 is connected with a first hose 337, one end of the first hose 337 far away from the water tank 332 is connected with the input end of the water inlet pump 335, the output end of the water inlet pump 335 is provided with a water inlet pipe 333, and one end of the water inlet pipe 333 far away from the water inlet pump 335 is inserted into the inner wall of the cooling pipe 31 until the water inlet pipe 333 is communicated with the water cooling cavity.

A second hose 338 is connected to one side surface of the water tank 332, the second hose 338 is located on the side surface of the water tank 332 opposite to the surface where the first hose 337 is located, one end of the second hose 338, which is far away from the water tank 332, is connected to an output end of the water outlet pump 336, an input end of the water outlet pump 336 is provided with a water outlet pipe 334, and one end of the water outlet pipe 334, which is far away from the water outlet pump 336, is inserted into the inner wall of the cooling pipe 31 until the water inlet pipe 333 is communicated with the.

When the power supply of the water inlet pump 335 and the water outlet pump 336 is switched on, the water in the water tank 332 is conveyed to the water cooling cavity 331 by the water inlet pump 335 through the first hose 337 and the water inlet pipe 333, and simultaneously the water in the water cooling cavity 331 is conveyed back to the water tank 332 by the water outlet pump 336 through the water outlet pipe 334 and the second hose 338, so that the water circulation of the cold water cavity is formed, the temperature of the cooling pipe 31 can be reduced better, and the cooling forming of the double-wall corrugated pipe attached to the outer wall of the cooling pipe 31 is accelerated. Meanwhile, a part of heat of the water body in the water tank 332 can be discharged out of the water tank 332 through the heat dissipation hole 3321 formed in the top of the water tank 332.

Meanwhile, a negative pressure machine 341 is fixed on the inner wall of the mounting cavity 32, three negative pressure pipes 343 are mounted on the negative pressure machine 341, and one ends of the three negative pressure pipes 343 far away from the negative pressure machine 341 are inserted into the inner wall of the cooling pipe 31 to be respectively communicated with the negative pressure holes 342 on the outer side surfaces of the three cooling pipes 31.

When the power of the negative pressure machine 341 is turned on, the double-wall corrugated pipe outside the cooling pipe 31 is adsorbed on the outer side surface of the cooling pipe 31 by the negative pressure hole 342, so that the cooling effect of the cooling pipe 31 on the double-wall corrugated pipe is improved.

In addition, a plurality of grooves 41 are formed in the outer side surface of the cooling pipe 31 in an equidistant surrounding mode, the grooves 41 can prevent the double-wall corrugated pipe which is not completely sized from being adhered to the outer side surface of the cooling pipe 31 to a certain extent, and the quality of the produced double-wall corrugated pipe can be improved.

The implementation principle of the extrusion die for producing the double-wall corrugated pipe material in the embodiment of the application is as follows:

when the extrusion die is in a working state, an operator is communicated with a motor of the heat radiation fan 21, a water inlet pump 335, a water outlet pump 336 and a power supply of the negative pressure machine 341, when the thermoplastic in a molten state flows into the inner plastic flow cavity 15 and the outer plastic flow cavity 16 through the inner feeding pipe 17 and the outer feeding pipe 18 respectively, the thermoplastic in the molten state is extruded from an opening of the inner plastic flow cavity 15 and an opening of the outer plastic flow cavity 16 on the die outer sleeve 14 after being processed by the extrusion die and moves towards the cooling pipe 31, the thermoplastic temperature is higher and is not completely shaped at the moment, and when the thermoplastic extruded from the outer plastic flow cavity 16 passes through the heat radiation fan 21 on the die outer sleeve 14, the heat radiation fan 21 performs air cooling on the thermoplastic in the outer plastic flow cavity 16, so that the cooling of the thermoplastic is accelerated, the phenomenon that the thermoplastic is adhered to the thermoplastic in the inner plastic flow cavity.

When the outer plastic flow cavity 16 and the inner plastic flow cavity 15 move outside the cooling pipe 31 in a thermoplastic manner, the grooves 41 formed in the outer side surface of the cooling pipe 31 enable the outer side surface of the cooling pipe 31 to be uneven, and the thermoplastic adhesion of the inner plastic flow cavity 15 close to the outer side surface of the cooling pipe 31 is avoided to a certain extent.

In addition, the water in the water tank 332 in the cooling pipe 31 flows from the water tank 332 to the water cooling chamber 331 by the driving of the water inlet pump 335, and the water in the water cooling chamber 331 flows back to the water tank 332 by the driving of the water outlet pump 336, so that the water circulation of the water cooling chamber 331 is realized, and the outer surface of the cooling pipe 31 can be cooled by the water circulation, thereby reducing the thermoplastic temperature in contact with the outer surface of the cooling pipe 31.

Meanwhile, the negative pressure machine 341 can adsorb the thermoplastic on the outer side surface of the cooling pipe 31 through the negative pressure pipe 343 and the negative pressure hole 342, thereby improving the heat radiation efficiency of the cooling pipe 31.

The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An extrusion die for producing a double-walled corrugated tubing, comprising: a mold body; a cavity (12) arranged in the middle of the end surface at one side of the die body; an inner plastic flow cavity (15) which is arranged on the outer side surface of the die body in a surrounding way and is close to one side of the opening of the cavity (12); encircle to set up interior moulding flow chamber (15) are kept away from flow chamber (16) are moulded outward to cavity (12) opening one side, its characterized in that, be provided with on the mould body and be used for the separation outer moulding flow chamber (16) opening with interior moulding flow chamber (15) opening extrudes thermoplastic separating mechanism, separating mechanism includes: the air blowing cavity is annularly arranged on the die body; and the heat dissipation fan (21) is annularly arranged on the inner wall of the blowing cavity, wherein the blowing cavity is arranged on the outer side surface of the die body and is positioned between the opening of the inner plastic flow cavity (15) and the opening of the outer plastic flow cavity (16).

2. An extrusion die for producing a double-walled corrugated pipe material according to claim 1, wherein the end of the die body near the opening of the cavity (12) is provided with a cooling portion for further cooling the double-walled corrugated pipe.

3. The extrusion die for producing a double-walled corrugated pipe material as recited in claim 2, wherein the cooling portion comprises: a cooling pipe (31) arranged on one side of the output end of the die body; the mounting cavity (32) is formed in the middle of one end, far away from the die body, of the cooling pipe (31); a water cooling member disposed within the mounting cavity (32); and an auxiliary water cooling element arranged in the mounting cavity (32).

4. The extrusion die for producing a double-walled corrugated pipe material as claimed in claim 3, wherein the water cooling member comprises: a water cooling cavity (331) which surrounds and is arranged in the pipe wall of the cooling pipe (31); a water tank (332) disposed at an inner wall of the installation chamber (32); one end of the water inlet pipe (333) penetrates through and is inserted into the inner wall of the cooling pipe (31) and communicated with the water cooling cavity (331); one end of the water outlet pipe (334) penetrates through and is inserted into the inner wall of the cooling pipe (31) and communicated with the water cooling cavity (331); the water inlet pump (335) is arranged on the inner wall of the installation cavity (32) and is connected with one end, far away from the water cooling cavity (331), of the water inlet pipe (333); the water outlet pump (336) is arranged on the inner wall of the installation cavity (32) and is connected with one end, far away from the water cooling cavity (331), of the water outlet pipe (334); a first hose (337) arranged on the water tank (332), wherein one end of the first hose, which is far away from the water tank (332), is connected with the input end of the water inlet pump (335); and a second hose (338) which is arranged on the water tank (332) and one end of which is far away from the water tank (332) is connected with the output end of the water outlet pump (336).

5. The extrusion die for producing a double-walled corrugated pipe material as claimed in claim 3, wherein the auxiliary water cooling member comprises: a negative pressure hole (342) formed in the outer side surface of the cooling pipe (31); a negative pressure pipe (343) having one end inserted through the inner wall of the cooling pipe (31) and communicating with the negative pressure hole (342); and a negative pressure machine (341) arranged on the inner wall of the installation cavity (32), wherein one end of the negative pressure pipe (343) far away from the negative pressure hole (342) is communicated with the negative pressure machine (341).

6. The extrusion die for producing the double-wall corrugated pipe material as claimed in claim 3, wherein the outer side surface of the cooling pipe (31) is provided with anti-sticking lines for preventing the double-wall corrugated pipe to be formed from being stuck on the outer side surface of the cooling pipe (31).

7. The extrusion die of claim 6, wherein the anti-sticking texture comprises: a plurality of grooves (41) circumferentially opened on the outer side surface of the cooling pipe (31).

8. The extrusion die for producing the double-wall corrugated pipe material as claimed in claim 4, wherein the top of the water tank (332) is provided with heat dissipation holes (3321).