CN208148450U - Bellows double layer socket joint forms flaring module tail portion pressing device online - Google Patents

Abstract

The utility model provides a kind of bellows double layer socket joint and forms flaring module tail portion pressing device online, it is sequentially connected from front to back by the special module of the bellows general module of circular flow, flaring module and carrying spigots, double-wall corrugated pipe squeezes out nose assembly and connects with water jacket, double-wall corrugated pipe squeezes out the outer wall melt extrusion mould-outlet of head and the Distance Shortened of inner wall melt extrusion mould-outlet to the adjacent position of two die orifices, and the tail portion for being flared module is equipped at least one special small echo.The utility model optimizes the prior art, the tubing produced saves raw material, reference waveform head Forming Quality can be effectively improved, whole root canal material good forming effect and inside and outside surface quality is good, and realize the band flaring double-wall corrugated pipe that same size molding machine produces maximum effective length with least module.

Description

Bellows double layer socket joint forms flaring module tail portion pressing device online

Technical field

The utility model belongs to bellows manufacturing field, in particular to a kind of bellows double layer socket joint forms flaring online Module tail portion pressing device.

Background technique

In bellows manufacturing field, especially in heavy caliber high density polyethylene (HDPE) bellows production process, generally double Wall bellows squeezes out head and is equipped with inner wall melt extrusion mould-outlet and outer wall melt extrusion mould-outlet, but two die orifices are at a distance of distant, Long, the double-deck welding is bad there is cooling time for the melt squeezed out by two die orifices, unstable product quality, production efficiency are low, And the disadvantages of double-wall corrugated pipe squeezes out handpiece structure complexity, manufactures and is difficult in maintenance.

For such structure, some producers propose improvement project on the market, are exactly two die orifices apart from each other in head Between aperture, so as to the enclosure space that during tube extrusion, will be formed between inside and outside wall melting material and head die orifice and external pressure Contracting gas reservoir connects, so that the pressure change in the space is adjusted by compressed gas reservoir.

Module is the important component on plastic tube product line in molding machine, and effect is in plastic melt by squeezing Solidifying and setting is carried out to fusant together with head after the head of machine is transported in molding machine cavity block out, cavity block is according to visitor Family requires designed shape, the modeling just needed after material after solidification is in the cavity block of molding machine out in this way Expects pipe material.

In addition, just needing to be flared module when production has the plastic pipe of flared section, wherein flaring module production flaring The starting point of tubing is flaring die block header, and the end of production flaring module is flaring module tail portion.Traditional flaring module Tail portion is designed as being directly connected standard module, i.e. cuts away a part of tail portion single wall after whole tube forming and be flared after tubing just The double-wall corrugated pipe partial head of standard unit's tubing is obtained.Since flared tail is directly connected standard bellows head, It is flared the gas in segment type chamber in this way in flared section forming process due to pressure unevenness, it is double-wall corrugated in production standard to will lead to it When gas break through standard corrugated pipe wall, and cause the defect of double-wall corrugated tube head Forming Quality difference.

Summary of the invention

The technical issues of the utility model is solved be to provide a kind of simple, reliable for operation, the double-deck weldability of structure it is good, expand Bellows section Forming Quality good bellows double layer socket joint in mouth tail portion forms flaring module tail portion pressing device online.Shorten The inside and outside wall melt cooling time difference, improve the welding quality of bellows inside and outside wall.

The technical solution adopted in the utility model is：A kind of bellows double layer socket joint forms flaring module tail portion pressure online Tight device is sequentially connected from front to back by the special module of the bellows general module of circular flow, flaring module and carrying spigots, Double-wall corrugated pipe squeezes out nose assembly and connects with water jacket, and double-wall corrugated pipe squeezes out the outer wall melt extrusion mould-outlet of head and inner wall melts The adjacent position of two die orifices is gradually shortened in the distance of material extrusion mould-outlet, and the tail portion for being flared module is special small equipped at least one Wave.Normal standard module is reconnected after special small echo.The whole root canal material obtained in this way only needs to be flared in cutting Segment trailer and special small echo part are cut off together, so that it may obtain the starting point of standard tubing.

The wave height of special small echo is less than standard wave height, and the pitch of waves is less than the standard pitch of waves, and trough pressing point is than standard ripple tube wave Paddy pressing point is low.After this design can allow tubing flared section to form, forming gas presses hot melt material by special small echo It is tightly lockked when molding by the special small wave mode chamber in module, it is preferred that using two special small forms at double locking guarantee, It can guarantee and break through hot melt material even if gas-pressurized, defect is caused in the forming process of special small echo, but since gas is let out Except certain pressure, then when being formed via reference waveform, it is ensured that good waveform quality.And flared tail and two special small Wave part is the part that can be removed, so even if special small echo poor quality, will not influence the quality of normal tubing.

Double-wall corrugated pipe squeezes out the upper outer die lip of nose assembly and lower outer die lip links together and forms outer die lip, outer die lip It is outer wall melt extrusion mould-outlet with the gap after the assembly of intermediate die lip, the gap after intermediate die lip and the assembly of interior die lip is molten for inner wall Expect extrusion mould-outlet.

Inclined tube road, inner wall melt extrusion mould-outlet and outer wall melt extrusion mould-outlet are equipped in intermediate die lip close to the inclined tube road Both sides up and down.

Water jacket is equipped with cooling stick core, is equipped with vertical pipeline between water jacket and interior die lip, cooling stick core and inner wall melt it Between through vertical pipeline be sent into compressed air, under the action of air pressure inside, inner wall melt is deviated to outer wall melt direction, and interior Air between outer wall melt is gradually discharged through vertical pipeline, and inside and outside wall melt is bonded and is fused to together.

The special module of bellows general module, flaring module and carrying spigots is equipped with and vacuumizes hole or multiple groups vacuumize hole With cooling-water duct or multiple groups cooling-water duct, the suction-operated in inside and outside wall melt vacuum duct in internal pressure and forming module Under, it is fitted on the contour curve of forming module bell and spigot together, the circulation that heat is formed in module in cooling duct is cold But water is taken away and cooling and shaping becomes double layer socket joint area.

The utility model has the beneficial effects that the prior art is optimized, the pipe produced using the utility model structure Material saves raw material, can effectively improve reference waveform head Forming Quality, whole root canal material good forming effect and inside and outside surface quality It is good, and realize the band flaring double-wall corrugated pipe that same size molding machine produces maximum effective length with least module.

In addition, mechanical property is good, the online double layer socket joint quality that manufactures is stablized, high production efficiency, and double-wall corrugated pipe It is simple to squeeze out handpiece structure, produces and processes and easy to maintenance and reliable for operation.

Detailed description of the invention

Attached drawing 1 is that bellows double layer socket joint forms flaring module tail portion pressing device schematic diagram online.

Attached drawing 2 is enlarged drawing at Figure 1A.

Attached drawing 3 is that bellows double layer socket joint forms flaring module tail portion pressing device working principle diagram online.

Attached drawing 4 is enlarged drawing at Fig. 3 B.

Appended drawing reference：1- bellows general module 2- cooling duct 3- flaring module 4- vacuumizes hole 5- carrying spigots It is cooling in the 8- inner wall melt extrusion mould-outlet 9- vertical pipeline 10- of special module 6- outer wall melt extrusion mould-outlet 7- inclined tube road Channel；Outer die lip under outer die lip 16- on the cooling stick core 12- water jacket 13- flaring special small echo 15- of module tail portion 14- of 11- 17- double-wall corrugated pipe squeezes out die lip 20- tubing 21- flaring die block header 22- expansion mouth in the die lip 19- of the centre head 18- Tail portion wave 23- standard wave

Specific embodiment

The utility model is further explained with reference to the accompanying drawing.

As shown in Figure 1, Figure 2, the utility model is that a kind of bellows double layer socket joint forms flaring module tail portion compression dress online It sets, is sequentially connected from front to back by the special module 5 of the bellows general module 1 of circular flow, flaring module 3 and carrying spigots, Double-wall corrugated pipe squeezes out 17 component of head and water jacket 12 connects, and double-wall corrugated pipe squeezes out the outer wall melt extrusion mould-outlet 6 of head 17 The adjacent position of two die orifices is gradually shortened with the distance of inner wall melt extrusion mould-outlet 8, there are two the tail portion of flaring module 3 is set Special small echo 14.Normal standard wave 23 is reconnected after special small echo 14.The whole root canal material obtained in this way cutting when only It needs to be flared segment trailer and two special 14 parts of small echo is cut off together, so that it may obtain the starting point of standard tubing.Shorten The inefficient length of flaring 3 flared section of module, saves material, and due to the presence of special small echo 14, standard corrugated pipe head The hidden danger that portion is easy to appear Forming Quality difference is eliminated here, to ensure that the Forming Quality of double-wall corrugated pipe.It keeps away Exempt from the standard bellows head that excision Forming Quality is not good enough too much, saves production time and raw materials for production.In production line On, quantity-produced double-wall corrugated pipe is cut in double layer socket joint and 14 region of special small echo, at this time every double-wall corrugated pipe Dou Youyige double layer socket joint area, in this way in engineering construction, double-wall corrugated pipe can easily be completed to be connected.

Flaring module 3 shortens the inefficient length for being flared end in design, to reserve the special small echo 14 of arrangement Position, such as Fig. 3 and Fig. 4.Two special small echos 14 designs in this position, occupancy be flared section inefficient length, it is special The wave height of small echo 14 is less than standard wave height, and the pitch of waves is less than the standard pitch of waves, and trough pressing point presses point than the trough of standard wave 23 It is low.Preferably, the wave height of special small echo 14 is 0.3~0.8 times of standard wave, and the pitch of waves is 0.3~0.8 times of standard wave, trough Pressing point is 0.5mm~2mm lower than the trough of standard wave 23 pressing point.After this design can allow tubing flared section to form, gas is formed Body presses hot melt material and is tightly lockked when being formed by special small echo 14 by the 14 type chamber of special small echo in module, and two A special small echo 14 forms double locking guarantee, can guarantee and break through hot melt material even if gas-pressurized, special small echo 14 at When causing defect during type, but since gas is let out except certain pressure, then being formed via standard wave 23, it is ensured that good Waveform quality.And being flared module tail portion 13 and 14 part of special small echo is the part that can be removed, so even if special small echo 14 The pipe workpiece quality of position is bad, will not influence the quality of normal tubing 20.

The upper outer die lip 15 that double-wall corrugated pipe squeezes out 17 component of head links together with lower outer die lip 16 forms outer die lip, Gap after outer die lip and intermediate die lip 18 assemble is outer wall melt extrusion mould-outlet 6, after intermediate die lip 18 and interior die lip 19 assemble Gap be inner wall melt extrusion mould-outlet 8.

Inclined tube road 7, inner wall melt extrusion mould-outlet 8 and outer wall melt extrusion mould-outlet 6 are equipped in intermediate die lip 18 close to inclined tube The both sides up and down on road 7.

Water jacket 12 is equipped with cooling stick core 11, is equipped with vertical pipeline 9 between water jacket 12 and interior die lip 19, cooling stick core 11 with It is sent into compressed air through vertical pipeline 9 between inner wall melt, under the action of air pressure inside, inner wall melt is to outer wall melt direction Offset, and the air between inside and outside wall melt is gradually discharged through vertical pipeline 9, and inside and outside wall melt is bonded and is fused to together.

The special module 5 of bellows general module 1, flaring module 3 and carrying spigots is equipped with multiple groups and vacuumizes hole 4 and multiple groups Cooling-water duct 2.Inside and outside wall melt under the suction-operated in vacuum duct 4, fits to molding in internal pressure and forming module together On the contour curve of module bell and spigot, the recirculated cooling water that heat is formed in module in cooling duct 2 is taken away and cooling is fixed Type becomes double layer socket joint area.

When the device is operated, double-wall corrugated pipe squeezes out outer wall melt extrusion mould-outlet 6 and inner wall melt extrusion on head 17 8 extrusion mould-outlet of die orifice passes through two moulds at a distance of closer (with reference to enlarged drawing at A, two die orifices distance is only the width of a small echo) The melt that mouth squeezes out, cooling time is short, and the ectonexine melt temperature difference is small, so the double-deck melt welding is good, product quality is protected Card, and double-wall corrugated pipe extrusion 17 structure of head is simple, it is easy to process.Double-wall corrugated pipe squeezes out to be installed with before head 17 Water jacket 12, for playing the role of cooling to pipe material inner wall after molding.

When manufacturing double layer socket joint part, compressed air enters cooling stick core 11 and inner wall melt by vertical pipeline 9 Between inner wall melt in extrusion mould-outlet 8, under internal gas pressure, inner wall melt is to outside in outer wall melt extrusion mould-outlet 6 Wall melt deviates, and the air between inside and outside wall melt is gradually discharged through vertical pipeline 9, and inside and outside wall melt is bonded and welding is one It rises, under the suction-operated for vacuumizing hole 4 in internal pressure and flaring module 3, fits to the contour curve of forming module bell and spigot On, heat is taken away and gradually cooling and shaping by the recirculated cooling water in the cooling duct 2 in general module 1 and flaring module 3 And become double layer socket joint area.

Produce the tubing of equivalent diameter specification, general module design aligning method be several pairs of conventional ripple modules successively Followed by a pair of of flaring module of arrangement after arrangement, the flaring starting point of the flaring module are covered with entire module to terminating to correct. During tube forming, all modules carry out periodic motion according to desired trajectory line, to mold bellows segment and flared section Whole section of tubing being connected.Then by the cast-cutting saw cutting on line on pipe production line fall to be flared segment trailer and close to its it is latter The several segments bellows of measured length, to obtain the band flared section plastic film capicitor of whole equal length.

The utility model is connected to the special small of flaring module tail portion in optimization design module, in flaring module tail portion 13 Wave 14, it is online to manufacture subsequent two special small echos 14 of bell and spigot and common bellows portion timesharing, when bellows general module 1 Or the special module 5 of carrying spigots runs to the position of extruder melt extrusion mould-outlet, 7 entrance inside and outside walls are molten by the road for compressed air Expect in cavity, under the influence of air pressure, inner wall melt fits to together with cooling stick core 11, and outer wall melt fits to forming module On the section profile curve of bellows 1, the heat of inside and outside wall is respectively by the recirculated water in inner cooling channel 10 and cooling duct 2 It takes away, is solidified togather after inside and outside wall is cooling.

Such as attached drawing 3, needing the corrugated pipe 20 of molding band flaring is via molding machine upper module molding plastics online The special module 5 of band flaring double-wall corrugated pipe, several bellows general modules 1 and a flaring module 3 and carrying spigots is pressed It is mounted on molding machine mould bases according to certain sequence, all modules are successively moved on molding machine with fixed motion profile, with it In one piece of module be reference, after the module occurs from some position, when next time occurs in the position again, all modules are completed One cycle of operation, molding tubing is that so in cycles pipe can be completed in a fixed unit length tubing at this time The uninterrupted online production of material.When tubing is via between flaring module tail portion and next standard module, since there are two spies The presence of different small echo 14, has been limited in what special small echo 14 occurred for the second-rate bellows segment being likely to occur in forming process Position, and bellow flare segment trailer 13 and special small echo 14 are to need removed part at that time in the design, to guarantee The Forming Quality of whole bellows.

Claims (6)

1. a kind of bellows double layer socket joint forms flaring module tail portion pressing device online, common by the bellows of circular flow The special module (5) of module (1), flaring module (3) and carrying spigots is sequentially connected from front to back, and double-wall corrugated pipe squeezes out head (17) and water jacket (12) connection, double-wall corrugated pipe squeeze out the outer wall melt extrusion mould-outlet (6) and inner wall melt extrusion of head (17) The adjacent position of two die orifices is gradually shortened in the distance of die orifice (8), it is characterised in that：The tail portion of flaring module (3) is set There is at least one special small echo (14).

2. bellows double layer socket joint according to claim 1 forms flaring module tail portion pressing device, feature online It is：The wave height of the special small echo (14) is less than standard wave height, and the pitch of waves is less than the standard pitch of waves, and trough pressing point is than standard ripple Tube wave paddy pressing point is low.

3. bellows double layer socket joint according to claim 1 forms flaring module tail portion pressing device, feature online It is：The double-wall corrugated pipe squeezes out the upper outer die lip (15) of head (17) and lower outer die lip (16) links together and forms external mold Gap after lip, outer die lip and intermediate die lip (18) assemble is outer wall melt extrusion mould-outlet (6), the intermediate die lip (18) and interior Gap after die lip (19) assembly is inner wall melt extrusion mould-outlet (8).

4. bellows double layer socket joint according to claim 1 forms flaring module tail portion pressing device, feature online It is：The water jacket (12) is equipped with cooling stick core (11), and vertical pipeline is equipped between the water jacket (12) and interior die lip (19) (9)。

5. bellows double layer socket joint according to claim 1 forms flaring module tail portion pressing device, feature online It is：The special module (5) of the bellows general module (1), flaring module (3) and carrying spigots is equipped with multiple groups and vacuumizes hole (4) and multiple groups cooling-water duct (2).

6. bellows double layer socket joint according to claim 3 forms flaring module tail portion pressing device, feature online It is：Inclined tube road (7), the inner wall melt extrusion mould-outlet (8) and outer wall melt extrusion die are equipped in the intermediate die lip (18) Mouthful (6) are close to the both sides up and down of the inclined tube road (7).