CN202241896U

CN202241896U - Double-wall corrugated pipe forming device

Info

Publication number: CN202241896U
Application number: CN2011203883728U
Authority: CN
Inventors: 何海潮; 王淳德
Original assignee: SUZHOU JEWELL PRECISION MACHINERY CO Ltd
Current assignee: SUZHOU JEWELL PRECISION MACHINERY CO Ltd
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-05-30
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a double-wall corrugated pipe forming device which comprises a mouth die, a core die, a water jacket with a cooling water channel, a blowing guide sleeve, a water inlet pipe, a draw bar and a water return pipe, wherein the blowing guide sleeve is positioned between the core die and the water jacket and can be used for preventing the core die and the water jacket from exchanging cold and heat; the draw bar is used for fixing the water jacket; and the rear end of the water jacket is provided with a mounting hole of which the diameter is matched with the outer diameter of the blowing guide sleeve. The double-wall corrugated pipe forming device is characterized in that the blowing guide sleeve is provided with a plurality of bosses along the circumstance; on the circumstance of the blowing guide sleeve, the blowing guide sleeve is in contact with the water jacket only by the outer circumstance surface of the bosses; the front end surface, outer circumstance surface and rear end surface of the blowing guide sleeve are respectively provided with a sealing slot; each sealing slot is respectively provided with a seal ring; the sealing slot on the outer circumstance surface of the blowing guide sleeve penetrates through the plurality of bosses along the circumstance; the rear end surface of the blowing guide sleeve is connected with the rear end surface of the core die in a sealing mode; and the front end surface of the blowing guide sleeve is in sealing contact with the hole bottom surface of the mounting hole.

Description

Double-wall corrugated pipe forming apparatus

Technical field

the utility model relates to a kind of double-wall corrugated pipe forming apparatus, particularly the water jacket heat-insulating technique of corrugated pipe forming device.

Background technology

are as shown in Figure 1; Be the water jacket heat-proof device of present double-wall corrugated pipe, it comprises parts such as mouthful mould 1, core 2, air blowing guide pin bushing 3, water jacket 4, water inlet pipe 5, pull bar 6, return pipe 7, sealing ring 10, heating collar 12, spacer shell 13 and heat insulating mattress 14.The water jacket heat-proof device of present existing bellows has two shortcomings: one of which although between water jacket 4 and the core 2 heat insulating mattress 14 is arranged, and is provided with heating collar 12 at core 2 inner surfaces; But can be owing to the impact of performance decline of long slightly heat insulating mattress 14 service time, distortion makes the core 2 and the clearance distance of water jacket 4 diminish; When therefore producing; The low temperature that cooling jacket 4 takes place through regular meeting is delivered on the core 2, makes core 2 temperature reduce, and influences the stability of material discharging; The inner surface that causes product breaks, phenomenon such as wrinkling and uneven, influenced ordinary production; They are two years old; Former traditional external structure is because design is unreasonable; Meeting normally pressurize when blowing, the gas that blows into can be from 10 gas leakage of the sealing ring air blowing guide pin bushing 3 and water jacket 2 faying faces, the effect of the air blowing when influencing the production enlarging; Influenced the full moulding of the full and enlarging inwall of the waveform of product, and the using and detecting of the ring stiffness of product, ring flexibility.

Summary of the invention

The purpose of the utility model is the deficiency to above-mentioned prior art, and a kind of novel double-wall corrugated pipe forming apparatus is provided, and can realize heat insulation between described core and the described water jacket making sealing effectiveness better.

are for solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of double-wall corrugated pipe forming apparatus; Comprise: mouthful mould, core, have the water jacket of cooling water channel, between described core and said water jacket and stop air blowing guide pin bushing, the water inlet pipe of both cold and hot exchanges, the pull bar that is used for fixing described water jacket, return pipe; The rearward end of described water jacket offers the installing hole that the external diameter with said air blowing guide pin bushing is complementary; Described air blowing guide pin bushing upper edge circumferentially is provided with a plurality of boss; Week of said air blowing guide pin bushing upwards, the only outer peripheral face through a plurality of said boss of described air blowing guide pin bushing and said water jacket contacts; Offer seal groove on the front end face of said air blowing guide pin bushing, outer circumference surface, the rear end face respectively; Be respectively arranged with sealing ring in each described seal groove; Seal groove on the external peripheral surface of said air blowing guide pin bushing is along circumferentially passing a plurality of said boss; The rear end face of described air blowing guide pin bushing and the rear end face of described core are tightly connected, and the front end face of described air blowing guide pin bushing contacts with bottom surface, the hole sealing of described installing hole.

offer passage, screw hole and the screwed hole of the described pull bar that is used to be threaded further on the said air blowing guide pin bushing, described air blowing guide pin bushing is connected on the said core through screw and said pull bar.

further, and are gapped between described water jacket and the described core, and described gap forms the enlarging insufflation channel, and described insufflation channel is connected with described passage.

further, the rear end face of said air blowing guide pin bushing is provided with a plurality of convex tendons, only contacts through a plurality of described convex tendons between described air blowing guide pin bushing and the said core.

further, a plurality of described convex tendons are disposed radially respectively on said air blowing guide pin bushing.

further, described air blowing guide pin bushing upper edge circumferentially evenly is provided with 4 described boss.

The beneficial effect of the utility model is: the utility model adopts a kind of water jacket heat-insulating technique, and heat insulation between realization core that can be good and the water jacket improved the stability of material discharging, makes the inner surface of product more smooth; The water jacket heat-proof device of the utility model can also guarantee its sealing, has improved the air blowing effect when the production enlarging, helps using and detecting of product ring stiffness ring flexibility.

Description of drawings

Fig. 1 is traditional corrugated pipe forming device sketch map;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is the cutaway view (along A-A in the accompanying drawing 4) of the air blowing guide pin bushing of the utility model;

Fig. 4 is the right view of the air blowing guide pin bushing of the utility model;

Fig. 5 is the left view of the air blowing guide pin bushing of the utility model;

Fig. 6 is the partial enlarged view of the rearward end of double-wall corrugated pipe forming apparatus;

wherein: 1, mouthful mould; 2, core; 3, air blowing guide pin bushing; 4, water jacket; 5, water inlet pipe; 6, pull bar; 7, return pipe; 8, screw; 9, nut; 101, first sealing ring; 102, second sealing ring; 103, the 3rd sealing ring; 11, nut collar; 12, heating collar; 13, spacer shell; 14, heat insulating mattress; 15, end cap; 16, water jacket overcoat; 17, insufflation channel; 21, material extrusion; 31, boss; 32, ladder hole; 33, screwed hole; 34, passage; 351, first seal groove; 352, second seal groove; 353, the 3rd seal groove; 36, convex tendon; 41, water channel.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model clearer; Below in conjunction with embodiment shown in the drawings the utility model is done following detailed description the in detail; Wherein, " the place ahead " described in this specification is identical with right side shown in the accompanying drawing 1, and " rear " described in the specification is identical with left side shown in the accompanying drawing 1:

are a kind of double-wall corrugated pipe forming apparatus like Fig. 2, shown in 6, and it includes mouthful mould 1, core 2, air blowing guide pin bushing 3, water jacket 4, water inlet pipe 5, pull bar 6, return pipe 7, screw 8, nut 9, sealing ring 10 and nut collar 11 etc.Wherein mouthful mould 1, core 2 join with water jacket 4, and the material extrusion 21 of annular is arranged between mouthful mould 1 and the core 2.The molding materials of molten state is extruded from the material extrusion 21 between mouth mould 1 and the core 2, and constantly extends forward, when extruded material process water jacket 4, because the temperature of water jacket 4 is lower, makes the rapid cooling forming of bellows internal face.Wherein, the rear end of water jacket 4 offers the installing hole that is used to accommodate said air blowing guide pin bushing 3, and air blowing guide pin bushing 3 is arranged in the installing hole, and is installed in and is used to isolate water jacket 4 and core 2 between core 2 and the water jacket 4, reduces the core of heat and the heat exchange between the cold water jacket.

are like Fig. 3, shown in 4 and 5; The week of air blowing guide pin bushing 3 upwards evenly is provided with a plurality of boss 31, and this boss 31 is a little more than the external peripheral surface at other positions, and the rear end face of air blowing guide pin bushing 3 is provided with a plurality of convex tendons 36; A plurality of convex tendons 36 protrude from the front surface at other positions; Therefore after air blowing guide pin bushing 3 installs, between air blowing guide pin bushing 3 and the water jacket 4 only the outer peripheral face through this boss 31 contact, and between air blowing guide pin bushing 3 and the core 2 only the front surface through a plurality of convex tendons 36 contact; Because between air blowing guide pin bushing 3 and the core 2, air blowing guide pin bushing 3 reduces with effective contact area between the water jacket 4, therefore can reduce the heat transmission.In order to reach better effect of heat insulation, the front end face of air blowing guide pin bushing 3 also can realize that the part at the bottom of the hole with water jacket 4 installing holes contact through the processing small embossment, and is less usually owing to this contact area in the actual production, so generally do not reprocess convexity.

air blowing guide pin bushing 3 is fixedly mounted on the front end face of core 2 through screw 8; The front end face of air blowing guide pin bushing 3, rear end face and external peripheral surface all offer seal groove; Wherein, the seal groove of the front end face of air blowing guide pin bushing 3 and rear end face extends along the direction that is parallel to its front end face and rear end face respectively.Offer first seal groove 351 on the rear end face of air blowing guide pin bushing 3, seal with first sealing ring 10 between the front end face of air blowing conduit 3 and core 2; Offering second seal groove, 352, the second seal grooves 352 on the external peripheral surface of air blowing guide pin bushing 3 is provided with second sealing ring 102 in a plurality of boss 31, the second seal grooves 352 and contacts with the internal face of water jacket 4 along circumferentially passing; Likewise; Match at the bottom of the hole of the front end face of air blowing guide pin bushing 3 and the installing hole of said water jacket 4, offer on the front end face of air blowing guide pin bushing 3 in the 3rd seal groove 353, the three seal grooves 353 the 3rd sealing ring 103 is set; The 3rd sealing ring 103 contacts with at the bottom of the installing hole hole; The guide pin bushing 3 of avoiding blowing directly contacts with water jacket 4, because the poor thermal conductivity of sealing ring, so can make isolated heat transmission between air blowing guide pin bushing 3 and core 2 and the water jacket 4.

water jacket 4 is connected with air blowing guide pin bushing 3 through pull bar 6, and an end of pull bar 6 is through being threaded onto on the air blowing guide pin bushing 3, and the other end is pressed on the end cap 15 through nut 9 and nut collar 11, and end cap 15 is withheld on the end face of water jacket 4.The outer surface of water jacket 4 has water channel 41, and the import of water channel 41 is communicated with water inlet pipe 5, and the outlet of water channel 41 is communicated with return pipe 7, in the outside of the outer surface of water jacket 4 water jacket overcoat 16 is arranged.Gapped between the end face of water jacket 4 near the surface of an end face of air blowing guide pin bushing 3 and core 2, this gap forms insufflation channel 17.

are like Fig. 3, shown in 4 and 5; Structural representation for air blowing conduit 3; Offer ladder hole 32, screwed hole 33, passage 34 and seal groove 35 on the air blowing conduit 3, ladder hole 32 is used to pass screw 8, thereby air blowing guide pin bushing 3 is fixedly connected with core 2.Screwed hole 33 on the air blowing guide pin bushing 3 is used to install pull bar 6, and an end of passage 34 is communicated with air blowing guide pin bushing 3, and the other end is connected with insufflation channel 17.Air blowing guide pin bushing 3 can be kept apart the high temperature of mould and the low temperature of cooling jacket 4, make core 2 keep certain high temperature, and cooling jacket 4 also can keep certain low temperature; Like this; From the material that extrusion 21 between mouth mould 1 and the core 2 is extruded, the water jacket 4 through the band negative pressure makes the inwall of product cool off fast; In the needs enlarging, air blowing guide pin bushing 3 can also guarantee air tight.

the foregoing description is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalent transformation or modifications of being done according to the utility model spirit all should be encompassed within the protection domain of the utility model.

Claims

1. double-wall corrugated pipe forming apparatus; Comprise: mouthful mould, core, have the water jacket of cooling water channel, between described core and said water jacket and stop air blowing guide pin bushing, the water inlet pipe of both cold and hot exchanges, the pull bar that is used for fixing described water jacket, return pipe; The rearward end of described water jacket offers the installing hole that the external diameter with said air blowing guide pin bushing is complementary; It is characterized in that: described air blowing guide pin bushing upper edge circumferentially is provided with a plurality of boss; Week of said air blowing guide pin bushing upwards, the only outer peripheral face through a plurality of said boss of described air blowing guide pin bushing and said water jacket contacts; Offer seal groove on the front end face of said air blowing guide pin bushing, outer circumference surface, the rear end face respectively; Be respectively arranged with sealing ring in each described seal groove; Seal groove on the external peripheral surface of said air blowing guide pin bushing is along circumferentially passing a plurality of said boss; The rear end face of described air blowing guide pin bushing and the rear end face of described core are tightly connected, and the front end face of described air blowing guide pin bushing contacts with bottom surface, the hole sealing of described installing hole.

2. double-wall corrugated pipe forming apparatus according to claim 1; It is characterized in that: offer passage, screw hole on the said air blowing guide pin bushing and the screwed hole of the described pull bar that is used to be threaded, described air blowing guide pin bushing is connected on the said core through screw and said pull bar.

3. double-wall corrugated pipe forming apparatus according to claim 2 is characterized in that: gapped between described water jacket and the described core, described gap forms the enlarging insufflation channel, and described insufflation channel is connected with described passage.

4. double-wall corrugated pipe forming apparatus according to claim 1 is characterized in that: the rear end face of said air blowing guide pin bushing is provided with a plurality of convex tendons, only contacts through a plurality of described convex tendons between described air blowing guide pin bushing and the said core.

5. double-wall corrugated pipe forming apparatus according to claim 4 is characterized in that: a plurality of described convex tendons are disposed radially respectively on said air blowing guide pin bushing.

6. double-wall corrugated pipe forming apparatus according to claim 1 is characterized in that: described air blowing guide pin bushing upper edge circumferentially evenly is provided with 4 described boss.