CN101134363A

CN101134363A - Double-walled clamping bar plastic tube forming device

Info

Publication number: CN101134363A
Application number: CNA2007101129081A
Authority: CN
Inventors: 张其智; 武停启
Original assignee: WEIFANG ZHONGYUN SCIENTIFIC RESEARCH Co Ltd
Current assignee: WEIFANG ZHONGYUN SCIENTIFIC RESEARCH Co Ltd
Priority date: 2007-09-03
Filing date: 2007-09-03
Publication date: 2008-03-05
Anticipated expiration: 2027-09-03
Also published as: CN100503210C

Abstract

The double wall inside ribbed plastic pipe forming apparatus includes one support, one mold body fixed on the support, one outer mold core mounted through bearing inside the mold body, one chain wheel mounted in the back part of the outer mold core, one inner mold core mounted through bearing inside the outer mold core, one inner mold core rack to fix the back part of the inner mold core, one inner pipe sizing sleeve in the end of the inner mold core, one extruding die in the end of the mold body, one cooling wind ring and one vacuum outer pipe sizing sleeve mounted on the extruding die, one axial flow channel inside the outer mold core and one inside rib forming block in the end of the outer mold core. Compared with available technology, the present invention has the advantages of simple structure, low power consumption, low cost, saving in material and one time higher production efficiency.

Description

Double-walled clamping bar plastic tube forming device

Technical field

The present invention relates to the extrusion equipment of plastic pipe, particularly relate to a kind of extrusion molding apparatus of double-walled clamping bar plastic tube.

Background technology

At present, in various structured wall popes, the double-walled plastic film capicitor is owing to have ring stiffness height, easy to connect, advantage such as cost is lower, and what be used as field such as urban construction more and more buries ground draining, blow-off line.But the existing make-up machine of producing the double-walled plastic film capicitor, all be to make plastic film capicitor continuously shaped moving continuously of shaping position and home position by forming module, each specification double-wall pipe all needs a large amount of forming modules, complex structure not only, equipment investment is huge, and the fault rate height, shaping speed is slow, and production efficiency is low.The patent No. is that the double-walled plastic corrugated pipe molding machine of 03276507.X and the patent No. are that 03269257.9 vertical plastic corrugated pipe forming machine all belongs to this kind equipment.

The patent No. is that the utility model of 90226754.X has provided a kind of double-walled clamping bar plastic tube, and it is to be connected with the spirality reinforcement between two concentric tube walls.But this utility model provides a kind of little caliber drainpipe for building, its original purpose of design is for noise reduction, because its design parameter is unreasonable, under identical ring stiffness, this double-walled clamping bar plastic tube is than great many of above-mentioned general double-walled plastic film capicitor rice, so can not promote always.

Summary of the invention

Purpose of the present invention is exactly at above-mentioned the deficiencies in the prior art, a kind of simple in structure, plastic tube forming device that production efficiency is high is provided, this device can disposablely be produced the double-walled clamping bar plastic tube that is provided with spiral reinforcing rod between two walls, substituting existing double-walled plastic film capicitor, thereby energy savings, reduce equipment investment to reach the purpose that reduces production costs.

For achieving the above object, double-walled clamping bar plastic tube forming device of the present invention, have support and the die body that is fixedly mounted on the support, core rod outside in die body, being equipped with by bearing, have the gap that holds melt between outer core rod and die body, outer core rod rear portion is equipped with the hinge wheel that drives outer core rod rotation.By bearing inner mould core is installed in the core rod outside, has the gap that holds melt between inner mould core and outer core rod, the rear portion of inner mould core is fixedly mounted in the inner mould core support, and this inner mould core support is fixedly mounted on the support.The pipe calibration sleeve is equipped with a mouthful mould in the die body end in the inner mould core end is installed with, and on mouthful mould cooling vane is installed, and outer tube vacuum sizing cover is installed on the cooling vane.Be provided with one or more axial melt flow channel in the external mold core body, the interior muscle forming blocks that is contained in outer core rod end face is arranged corresponding to the runner exit place.

The double-walled clamping bar plastic tube of institute of the present invention moulding is that inside and outside wall is all smooth circular solid wall pipe, middle spiral reinforcing rod and the seam under melt state of inside and outside layer pipe are an integral body, thereby guaranteed the structural strength of whole tubing, an and extrusion molding of whole tubing, no longer resemble and need a large amount of forming modules the double-wall corrugated pipe, thereby simplified the structure and relevant control system of tube forming device greatly, the manufacturing cost of having saved equipment has reduced equipment energy consumption.Through experiment test, compare with producing existing double-wall corrugated pipe, under the situation of same inner diameter and ring stiffness, this shaped device can drop into 50% by minimizing equipment, produces power consumption and saves 30%, and raw material can be saved more than 20%.Owing to adopted the measure of inside and outside cooling simultaneously, can realize rapidly and efficiently extruding of tubing, production efficiency can double.

Description of drawings

Fig. 1 is a main cutaway view of the present invention, shows its overall structure;

Fig. 2 is the front view of outer core rod;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the longitudinal sectional view of the double-walled clamping bar plastic tube of moulding of the present invention;

Fig. 5 is the left view of Fig. 4.

The specific embodiment

The accompanying drawing illustrated embodiment, the present invention has support 9, and die body 6 is installed in support 9, and support 9 ends are equipped with block 8 by screw 7, realize the axial location to die body 6.In die body 6 by the external mold mandrel hold 121 and the external mold mandrel hold II23 be equipped with outside core rod 25, two bearings on outer core rod 25, realizes the circumferential location of outer core rod 25 in die body 6 by interference fit.Core rod 25 rear portions are equipped with hinge wheel 20 outside, hinge wheel 20 is installed in thrust ring 16 on the outer core rod 25 and external mold mandrel and holds I21 and be fixed on the outer core rod 25, outer core rod 25 is realized axial location by the thrust bearing 12 that is installed on the thrust ring 16, and there is the thrust bearing pallet 15 that is fixed on outer core rod 25 ends by screw 14 in thrust bearing 12 outsides.6 of outer core rod 25 and die bodys have the gap that holds melt, and these melts are extruded the back and formed outer wall 28.By bearing 22 inner mould core 24 is installed in the core rod 25 outside, this bearing 22 is fixed on the inner mould core 24 by interference fit, realizes the inner mould core 24 circumferential location in the core rod 25 outside.The rear portion of inner mould core 24 is fixed on the inner mould core support 11 by screw 13, realizes the axial location of inner mould core 24, and inner mould core support 11 is fixedly mounted on the end of support 9 by screw 10.25 of inner mould core 24 and outer core rods have the gap that holds melt, and these melts are extruded the back and formed inner layer tube wall 30.Pipe calibration sleeve 2 in inner mould core 24 ends are installed with by screw 27, the cooling tracheae 26 that front end is connected with interior pipe calibration sleeve 2 passes inner mould core 24 inner chambers.In die body 6 ends mouthful mould 5 is installed, and realizes that by adjustment screw 4 mouthful moulds 5 are concentric with outer core rod 25.Cooling vane 3 is installed on mouth mould 5, and overlaps 1 axial restraint by the outer tube vacuum sizing.Be provided with the axial melt flow channel of 3-6 bar 31 in core rod 25 bodies outside, corresponding to each runner 31 exit the interior muscle forming blocks 32 that is installed in outer core rod 25 end faces is arranged, form the spiral reinforcing rod 29 between inside and outside tube wall after the melt in the runner 31 is extruded by interior muscle forming blocks 32.Be equipped with on support 9 by minor sprocket 18 and chain 19 and drive the motor 17 that hinge wheel 20 rotates, hinge wheel 20 drives outer core rod 25 and rotates.

Operation principle of the present invention is as follows: the melt that die body 6 and outer core rod are 25 is extruded that machine is extruded and is fixed to the outer wall 28 of tubing under the effect of cooling vane 3 and outer tube vacuum sizing cover 1; The melt that outer core rod 25 and inner mould core are 24 is extruded that machine is extruded and is the inner layer tube wall 30 of tubing at the effect compacted under of interior pipe calibration sleeve 2; Motor 17 drives hinge wheel 20 by minor sprocket 18 and chain 19 and the outer core rod 25 of final drive rotates; Melt core rod 25 axial flow outside extruder pressure effect lower edge in the outer core rod 25 body inner flow passages 31, and the interior muscle forming blocks 32 that is positioned at outer core rod 25 ends changes direction, finally along the direction outflow angled with outer core rod 25 exit end faces, and with inner layer tube wall 30 and outer wall 28 seam, the rotary action of core rod 25 forms down spiral reinforcing rod 29 outside; 2 pairs of inner layer tube walls of pipe calibration sleeve 30 were realized the effect of cooling sizing in cold gas was sent into by tracheae 26.

Claims

1. double-walled clamping bar plastic tube forming device, have support (9) and be fixedly mounted on die body (6) on the support (9), it is characterized in that: core rod (25) outside in die body (6), being equipped with by bearing (21) (23), have the gap that holds melt between outer core rod (25) and die body (6), outer core rod (25) rear portion is equipped with the hinge wheel (20) that drives outer core rod (25) rotation; By bearing (22) inner mould core (24) is installed in the core rod (25) outside, has the gap that holds melt between inner mould core (24) and outer core rod (25), the rear portion of inner mould core (24) is fixedly mounted in the inner mould core support (11), and this inner mould core support (11) is fixedly mounted on the support (9); Pipe calibration sleeve (2) is equipped with a mouthful mould (5) in die body (6) end in inner mould core (24) end is installed with, and on mouthful mould (5) cooling vane (3) is installed, and outer tube vacuum sizing cover (1) is installed on the cooling vane (3); Be provided with axial melt flow channel (31) in core rod (25) body outside, the interior muscle forming blocks (32) that is installed in outer core rod (25) end face is arranged corresponding to runner (31) exit.

2. double-walled clamping bar plastic tube forming device according to claim 1 is characterized in that being provided with the cooling tracheae (26) that front end is connected with interior pipe calibration sleeve (2) in inner mould core (24) inner chamber.

3. double-walled clamping bar plastic tube forming device according to claim 1 is characterized in that being equipped with the motor (17) that rotates by chain drive hinge wheel (20) on support (9).

4. double-walled clamping bar plastic tube forming device according to claim 1 is characterized in that being evenly equipped with the axial melt flow channel of 3-6 bar (31) in core rod (25) body outside.