CN215151783U

CN215151783U - Guide device for PVC-O pipe fitting radial expansion orientation

Info

Publication number: CN215151783U
Application number: CN202120191544.6U
Authority: CN
Inventors: 赵天宝; 欧阳司晨; 李正秋; 杨建中
Original assignee: Yibin Tianyi New Material Technology Co ltd
Current assignee: Yibin Tianyi New Material Technology Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-12-14
Anticipated expiration: 2031-01-25

Abstract

The utility model discloses a guiding device for PVC-O pipe fitting radial expansion orientation, which comprises a pipe fitting molding heating section, a pipe fitting radial expansion molding section connected with the pipe fitting molding heating section and an expansion guiding mechanism arranged in the pipe fitting radial expansion molding section; the expansion guide mechanism comprises an expansion air sleeve, an expansion guide head arranged in the expansion air sleeve, a plurality of first air guide mechanisms arranged on the expansion guide head and a plurality of second air guide mechanisms arranged on the inner wall of the expansion air sleeve, and the first air guide mechanisms correspond to the second air guide mechanisms. The device has reliable structure, and reduces the impact of air flow on the air sleeve wall through the hole opening and air blowing modes. The relative sizes of the middle part and the head part of the air sleeve and the expansion degree in a natural state are adjusted to ensure the uniformity of expansion, so that the raw material resources can be greatly saved, the cost is reduced, the product performance is improved, and the air sleeve has obvious economic and social benefits.

Description

Guide device for PVC-O pipe fitting radial expansion orientation

Technical Field

The utility model relates to a material preparation technical field, concretely relates to a guider that is used for PVC-O pipe fitting radial expansion orientation.

Background

The PVC-O pipe is characterized in that molecules of a PVC material are rearranged by biaxial tension at the glass transition temperature of the PVC material, so that the material (pipe wall) forms a net structure, the brittle failure caused by micro cracks of a material body or scratches on the surface of the pipe wall can be borne, and the strength, the toughness and the anti-cracking performance of the pipe are obviously improved. The biaxially oriented polyvinyl chloride (PVC-O) pipe is manufactured by a special orientation processing technology, and the processing technology is characterized in that the PVC-U pipe produced by an extrusion method is axially stretched and radially stretched, so that PVC long-chain molecules in the pipe are regularly arranged in a biaxial direction, a novel PVC pipe with high strength, high toughness, high impact resistance and fatigue resistance is obtained, and the performance of the novel PVC pipe is far superior to that of a common PVC-U pipe. The development of PVC-O pipe can greatly save raw material resources, reduce cost, improve product performance and have obvious economic and social benefits. The existing guide device has the defects of uneven blowing, too large impact on the pipe wall caused by blowing, serious damage to the pipe wall, uneven blowing, poor blowing effect and serious influence on the forming quality of the pipe fitting.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a guider that is used for PVC-O pipe fitting radial expansion orientation to solve the poor problem of current guider effect of blowing.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a guiding device for PVC-O pipe fitting radial expansion orientation comprises a pipe fitting molding heating section, a pipe fitting radial expansion molding section connected with the pipe fitting molding heating section, and an expansion guiding mechanism arranged in the pipe fitting radial expansion molding section;

the expansion guide mechanism comprises an expansion air sleeve, an expansion guide head arranged in the expansion air sleeve, a plurality of first air guide mechanisms arranged on the expansion guide head and a plurality of second air guide mechanisms arranged on the inner wall of the expansion air sleeve, and the first air guide mechanisms correspond to the second air guide mechanisms.

The beneficial effects of adopting the above technical scheme are: this guider structure is reliable, and performance is good, expands the pipe fitting through the expansion guiding mechanism in the pipe fitting radial expansion shaping section to expand pipe fitting axis direction along different anchor rings respectively through a plurality of first air guide mechanisms and a plurality of second air guide mechanism, improve the homogeneity of pipe fitting inflation expansion, improve inflation expansion effect, guarantee pipe fitting shaping quality.

Further, first air guide mechanism is including setting up a plurality of first exhaust seats on the expansion direction guide head, setting up separation blade on first exhaust seat and offer the venthole on the separation blade, and the venthole is annular evenly distributed along the separation blade.

The beneficial effects of adopting the above technical scheme are: through the setting of first exhaust seat and venthole and the injeciation of setting up the mode, guarantee the homogeneity of gas in the venthole to the pipe wall inflation in-process, thereby avoid gaseous local stress effect that forms to produce structural damage to the pipe wall.

Furthermore, the air outlet holes are a plurality of and are annularly and uniformly distributed along the separation blades.

The beneficial effects of adopting the above technical scheme are: the air outlet holes are uniformly distributed, so that the discharged air forms uniform flow velocity along the pipe wall, and the blowing expansion effect of a single air guide mechanism on the pipe fitting is ensured.

Furthermore, the second air guide mechanism comprises a plurality of second exhaust seats arranged on the expansion air sleeve, exhaust channels arranged on two sides of the second exhaust seats and communicated with the inside of the second exhaust seats, and a cover plate arranged in the second exhaust seats.

The beneficial effects of adopting the above technical scheme are: the inflation expansion of the pipe fitting inner wall different from the inflation direction of the first exhaust seat is guaranteed through the cooperation of the second exhaust seat and the exhaust passage, and the second exhaust seat is effectively prevented from being blocked in the non-working state through the cover plate.

Furthermore, a return spring connected with the cover plate is arranged in the second exhaust seat.

The beneficial effects of adopting the above technical scheme are: the reset spring is used as the connecting piece of the cover plate, so that the use performance of the cover plate is improved, and the cover plate is prevented from falling off under the action of larger wind power.

Further, the expansion air jacket comprises an air jacket body, an air jacket shrinking section arranged in the middle of the air jacket body and an air jacket expansion section arranged at the end part of the air jacket body, and the diameter of the air jacket shrinking section is smaller than that of the air jacket expansion section.

The beneficial effects of adopting the above technical scheme are: the relative sizes of the middle part and the head part of the air sleeve and the expansion degree under a natural state are adjusted through the special arrangement of the expansion air sleeve structure, so that the uniformity of expansion is ensured.

Further, the pipe fitting radially expands the profiled section and is connected formula structure as an organic whole with pipe fitting shaping heating section.

The utility model discloses following beneficial effect has: the utility model provides a guider for PVC-O pipe fitting radial expansion orientation, its structure is reliable, performance is good, through the trompil with the injecing of the mode of blowing, the effectual impact that reduces the air current to the gas jacket wall to the relative size of mid portion and the head through the adjustment gas jacket and the expansion degree under the natural state guarantee the homogeneity of expansion, effectual improvement is to the effect of pipe fitting inflation expansion, guarantee the shaping quality of pipe fitting, and practice thrift raw and other materials resource greatly, reduce cost.

Drawings

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

FIG. 2 is a schematic structural view of the middle expanding guide mechanism of the present invention;

FIG. 3 is a schematic structural view of a first gas guiding mechanism of the present invention;

FIG. 4 is a schematic structural view of a second gas guiding mechanism of the present invention;

the reference numerals shown in fig. 1 to 4 are respectively expressed as: the device comprises a 1-pipe forming and heating section, a 2-pipe radial expansion forming section, a 3-expansion guide mechanism, a 30-expansion air sleeve, a 31-expansion guide head, a 32-first air guide mechanism, a 33-second air guide mechanism, a 320-first exhaust seat, a 321-baffle plate, a 322-air outlet hole, a 330-second exhaust seat, an 331-exhaust channel, a 334-cover plate, a 335-reset spring, a 301-air sleeve body, a 302-air sleeve reduction section and a 303-air sleeve expansion section.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 2, a guiding device for PVC-O pipe radial expansion orientation includes a pipe forming heating section 1, a pipe radial expansion forming section 2 connected to the pipe forming heating section 1, and an expansion guiding mechanism 3 disposed in the pipe radial expansion forming section 2; the pipe fitting radial expansion forming section 2 and the pipe fitting forming heating section 1 are connected into an integral structure.

The expanding guide mechanism 3 comprises an expanding air sleeve 30, an expanding guide head 31 arranged in the expanding air sleeve 30, a plurality of first air guide mechanisms 32 arranged on the expanding guide head 31 and a plurality of second air guide mechanisms 33 arranged on the inner wall of the expanding air sleeve 30, and the first air guide mechanisms 32 correspond to the second air guide mechanisms 33.

This guider structure is reliable, and performance is good, expands the pipe fitting through the expansion guiding mechanism 3 in the pipe fitting radial expansion shaping section 2 to expand pipe fitting axis direction along different anchor rings respectively through a plurality of first air guide mechanisms 32 and a plurality of second air guide mechanism 33, improve the homogeneity of pipe fitting inflation expansion, improve inflation expansion effect, guarantee pipe fitting shaping quality.

As shown in fig. 3, the first air guiding mechanism 32 includes a plurality of first exhaust seats 320 disposed on the expanding guide head 31, a blocking plate 321 disposed on the first exhaust seats 320, and air outlets 322 disposed on the blocking plate 321, and the air outlets 322 are uniformly distributed in an annular shape along the blocking plate 321. Through the setting of first exhaust seat 320 and venthole 322 and the injeciation of setting up the mode, guarantee the homogeneity of gaseous to the pipe wall inflation in-process in venthole 322, thereby avoid gaseous local stress effect that forms to produce structural damage to the pipe wall.

The air outlets 322 are multiple and are evenly distributed along the ring shape of the baffle 321. The gas discharged through the gas outlet holes 322 is uniformly distributed to form uniform flow velocity along the pipe wall, so that the blowing expansion effect of a single gas guide mechanism on the pipe fitting is ensured.

As shown in fig. 4, the second air guide mechanism 33 includes a plurality of second air discharging seats 330 disposed on the expanding air jacket 30, air discharging passages 331 disposed at both sides of the second air discharging seats 330 and communicating with the inside of the second air discharging seats 330, and a cover plate 334 disposed in the second air discharging seats 330. The inflation expansion of the inner wall of the pipe fitting in the direction different from the inflation direction of the first exhaust seat 320 is ensured through the matching arrangement of the second exhaust seat 330 and the exhaust passage 331, and the blockage of the second exhaust seat 330 in the non-working state is effectively avoided through the cover sheet 334.

A return spring 335 connected with the cover plate 334 is arranged in the second exhaust seat 330. The reset spring 335 is used as a connecting piece of the cover plate 334, so that the use performance of the cover plate 334 is improved, and the cover plate is prevented from falling off under the action of larger wind power.

The expanding air jacket 30 comprises an air jacket body 301, an air jacket reduced section 302 arranged in the middle of the air jacket body 301 and an air jacket expanding section 303 arranged at the end of the air jacket body 301, and the diameter of the air jacket reduced section 302 is smaller than that of the air jacket expanding section 303. The relative sizes of the middle part and the head part of the air sleeve and the expansion degree under the natural state are adjusted through the specific arrangement of the structure of the expansion air sleeve 30, so that the expansion uniformity is ensured.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The guiding device for the radial expansion orientation of the PVC-O pipe is characterized by comprising a pipe forming heating section (1), a pipe radial expansion forming section (2) connected with the pipe forming heating section (1) and an expansion guiding mechanism (3) arranged in the pipe radial expansion forming section (2);

the expansion guide mechanism (3) comprises an expansion air sleeve (30), an expansion guide head (31) arranged in the expansion air sleeve (30), a plurality of first air guide mechanisms (32) arranged on the expansion guide head (31) and a plurality of second air guide mechanisms (33) arranged on the inner wall of the expansion air sleeve (30), and the first air guide mechanisms (32) correspond to the second air guide mechanisms (33).

2. The guiding device for the radial expansion orientation of PVC-O pipes as recited in claim 1, wherein the first air guiding mechanism (32) comprises a plurality of first air exhausting seats (320) disposed on the expanding guiding head (31), a baffle plate (321) disposed on the first air exhausting seats (320), and an air outlet hole (322) opened on the baffle plate (321).

3. Guide means for the radial expansion orientation of PVC-O pipes according to claim 2, characterized in that said outlet holes (322) are multiple and uniformly distributed annularly along said flaps (321).

4. Guide device for the radial expansion orientation of PVC-O pipes according to claim 1, characterized in that said second air guiding means (33) comprise a plurality of second air evacuation seats (330) arranged on said expansion air jacket (30), air evacuation channels (331) arranged on both sides of said second air evacuation seats (330) and communicating with the interior of said second air evacuation seats (330), and cover sheets (334) placed inside said second air evacuation seats (330).

5. Guide for the radial expansion orientation of PVC-O pipes according to claim 4, characterized in that inside said second exhaust seat (330) there is provided a return spring (335) connected to said cover flap (334).

6. The guiding device for PVC-O pipe radial expansion orientation according to claim 1, wherein the expansion gas jacket (30) comprises a gas jacket body (301), a gas jacket reduced section (302) disposed in the middle of the gas jacket body (301), and a gas jacket expanded section (303) disposed at the end of the gas jacket body (301), and the gas jacket reduced section (302) has a diameter smaller than the diameter of the gas jacket expanded section (303).

7. Guide device for the radial expansion orientation of PVC-O pipes according to claim 6, characterized in that the pipe radial expansion forming section (2) is connected to the pipe forming heating section (1) as a one-piece structure.