CN209454121U - A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die - Google Patents
A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die Download PDFInfo
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- CN209454121U CN209454121U CN201822199474.XU CN201822199474U CN209454121U CN 209454121 U CN209454121 U CN 209454121U CN 201822199474 U CN201822199474 U CN 201822199474U CN 209454121 U CN209454121 U CN 209454121U
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- bellows
- mouth mold
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Abstract
A kind of polypropylene bellows plug die, its middle section is provided with the elongated slot of N item Yu bellows plug die axis parallel, long slot length is 50~100mm, width between adjacent two elongated slots is 3~30mm, distance=ripple plug die internal diameter × (0.5~1.5) of long slot pitch bellows plug die installation end face.Corrugated pipe forming head containing the plug die further includes head die body, vacuum tank, mouth mold, core model and cooling device, bellows plug die is mounted in vacuum tank, mouth mold is mounted on vacuum tank input end, and core model is mounted on mouth mold center, and there are ripple blank channels between core model and mouth mold；The cooling device includes the interior water composite cooling pipe being arranged in core model pore and the external spray head of vacuum chamber interior wall.The plug die design science, structure are simple, at low cost with the first-born production bellows of corrugated pipe forming machine containing the plug die, high-efficient, pollution-free, and bellows cooling velocity of being formed is fast, impact flexibility and excellent in cushion effect.
Description
Technical field
It is the utility model relates to a kind of plastic machinery equipment component, in particular to a kind of anti-for improving polypropylene bellows
The polypropylene bellows plug die of impact strength and corrugated pipe forming head containing the plug die.
Background technique
Polypropylene (PP) is a kind of high comprehensive performance, using extensive general-purpose plastics, there is very extensive purposes,
But polypropylene is crystalline polymer, internal there is very big spherocrystal, causes that polyacrylic impact strength is low, poor toughness, especially
It is embrittlement easy at low temperature, to limit its further utilization and development.
To improve the deficiency in PP performance, common method has two kinds:
1. elastic body toughening is modified, advantage significantly improves the impact flexibility of matrix resin really, but simultaneously and not
The rigidity and intensity of basis material are reduced avoidablely；
2. beta crystal-type nucleater is modified, its advantage is that product impact resistance can be improved but do not reduce the heat for even improving product
Deformation temperature makes to be taken into account in terms of impact resistance and resistance to heat distorsion this contradictory two, but works as and use PP reworked material or PP
Effect is unobvious after slightly compound other plastics；
In addition the above method all largely improves cost.
Utility model content
The purpose of this utility model is to provide a kind of polypropylene bellows plug die and the bellows containing the plug die at
Type head, to overcome above-mentioned deficiency present in prior art；
The technical scheme adopted by the utility model is that: a kind of polypropylene bellows plug die, the bellows plug die
Length L1 >=250mm, the middle section of bellows plug die are provided with the elongated slot of N item Yu bellows plug die centerline axis parallel, elongated slot
Length L2 be 50~100mm, the width L3 between adjacent two elongated slots is 3~30mm, long slot pitch bellows plug die installation
The distance L4=D of end face × (0.5~1.5), wherein D is ripple plug die internal diameter；
Multiple apertures are laid at the top of each wave crest of bellows plug die；
The numerical value of above-mentioned N is the arbitrary integer between 2~32, and general 4~8 more excellent.
It is another solution is that a kind of corrugated pipe forming head, the corrugated pipe forming head are containing above-mentioned polypropylene wave
The corrugated pipe forming head of line pipe plug die, including head die body, vacuum tank, mouth mold, core model, bellows plug die and cooling dress
It sets；
The vacuum tank is that a volume is greater than the volume of bellows plug die and accommodates the close of the lower bellows plug die
Chamber is sealed, the front end face center of vacuum tank is provided with preceding mounting hole, and the input end end face center of vacuum tank is provided with rear mounting hole, bellows
Plug die front end connect by preceding sealing ring with preceding mounting hole, bellows plug die rear end pass through rotary flange and rear sealing ring and
Mounting hole connects afterwards, is provided at least one pump orifice for penetrating the outer wall on the outer wall of the vacuum tank；
The mouth mold is mounted on the input end of vacuum tank, and its rear end is connect with head die body, and the front end of mouth mold is equipped with sealing
Step and mouth mold end, the mouth mold end passes through the centre bore of rotary flange and puts in the port of bellows plug die, described
Installation supporting pad and polytetrafluoroethylene (PTFE) pad are set in sealed step and so that it is connected with mouth mold by locking nut, described poly- four
The end face of vinyl fluoride pad and the end face of rotary flange are in close contact to form rotary seal face；The core model is fitted to mouth
Mould center, there are the channels that ripple blank passes through between core model and mouth mold；
The cooling device includes interior water composite cooling pipe and external spray head, and the pore of core model is arranged in the interior water composite cooling pipe
Interior and penetrate through the core model along the central axis of the core model and extend back into bellows plug die, its rear end is passed through backward along pore
Core model slave head mould body draws from inside to outside and by the external high-pressure cold water pump of hose, and interior water composite cooling pipe front end has central jets；
The external spray head is mounted on vacuum chamber interior wall and by the external high-pressure cold water pump of hose.
Further, the diameter of the mouth mold end, which is equal to ripple plug die internal diameter, subtracts 2~20mm, the length of mouth mold end
For 10~50mm, the wall thickness of mouth mold end is 3~5mm.
Further, the quantity of the external spray head is 2~12, simultaneously opposite bellows is uniformly mounted on vacuum chamber interior wall
Plug die.
Further: the radical of the interior water composite cooling pipe being arranged in the pore of core model is 1~6, is located at interior water cooling
But the number of the central jets of pipe front end is 1~6.
Due to taking above-mentioned technical proposal, a kind of polypropylene bellows plug die of the utility model and containing the plug die
Corrugated pipe forming head has the following beneficial effects:
It, should with containing 1. a kind of polypropylene bellows plug die design science, structure of the utility model are simple, easy to process
The first-born production bellows of the corrugated pipe forming machine of plug die, it is at low cost, it does not pollute, the sizing cooling velocity of bellows is fast, produces
It is high-efficient: after the molten plastic ripple pipe from head die body enters vacuum tank along core model, since vacuum tank has pump orifice,
Suction by vacuum pump to vacuum tank makes ripple pipe be close to ripple plug die and forms bellows, at the same time, comes from high pressure
The water of water pump sprays entire ripple plug die and bellows with nebulizing, maximum limit through central jets and external spray head
Degree increases cooling surface, while central jets make refrigerant using water and directly cool down molded bellows, and the heat taken away is remote
It is much bigger to make refrigerant than air-flow, and makes corrugated pipe forming cooling rapidly, greatly improves production efficiency；
2. bellows plug die has enough length due to a kind of polypropylene bellows plug die for using the utility model
Degree (be greater than or equal to 250mm), bellows in ripple plug die can basic cooling and shaping, thus can ensure that bellows can be stablized
Production；Again since the middle section of ripple plug die is provided with the N item elongated slot parallel with axis, the length L2 of elongated slot is 50~100mm, if
In the water that the external spray head of vacuum chamber interior wall sprays while cooling to ripple plug die, the elongated slot that can pass through on plug die is straight
It connects cooling bellows it is made to meet with chilling and obtain quick crystallization rate to obtain the polypropylene bellows of high beta-crystalline form content,
Polypropylene bellows impact strength is set to be greatly improved；
3. diameter D1=ripple plug die 4 internal diameter D- (2~20mm), the length L6 of mouth mold end of the mouth mold end are
The wall thickness D2 of 10~50mm, mouth mold end are 3~5mm, and the setting of the size can enable mouth mold be inserted into ripple plug die, second is that
By the mouth mold end of the size can moderately reduce polypropylene corrugated pipe orifice base temperature, improve mouth base melt strength be convenient at
Type, next can make, and the radial swollen stretching of splashing of generation in forming process, to effectively eliminate, " molecularly oriented of polypropylene extrusion generation is led
Cause that longitudinal strength is very strong and radial strength is very poor " unfavorable phenomenon；
4. due to installing polytetrafluoroethylene (PTFE) pad in the sealed step of mouth mold front end, can make mouth mold front end and rotary flange it
Between seal, while the heat of mouth mold can be prevented to be transmitted to and rotary flange and then be transmitted to ripple plug die, influence the cold of ripple plug die
But and then influence bellows quickly crystallizes.
To a kind of polypropylene bellows plug die of the utility model and contain the plug die with reference to the accompanying drawings and examples
The technical characteristic of corrugated pipe forming head be further described.
Detailed description of the invention
Fig. 1 is the ripple plug die main view (broken section) of the utility model；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is a kind of corrugated pipe forming handpiece structure schematic diagram of plug die of bellows containing polypropylene of the utility model
(broken section)；
Fig. 4 is mouth mold front-end architecture schematic diagram (section view)；
In figure:
1-ripple blank, 2-mouth molds, 21-mouth mold ends, 22- sealed step, 3-core models, 31-pores, 4-waves
Line pipe plug die, 40-attachment bases, 41-wave crests, 42-apertures, 43-elongated slots, 5-rotary flanges, 6-interior water composite cooling pipes,
7-central jets, 8-vacuum tanks, 9-external spray heads, 10-corrugated pipes, 11-preceding sealing rings, 12-supporting pads, 13-is poly-
Tetrafluoroethene pad, 14-locking nuts；
D-ripple plug die internal diameter, L1-ripple plug die length, the long slot length of L2-, adjacent two elongated slots of L3-it
Between width, the distance of L4-long slot pitch bellows plug die installation end face, the long groove width of L5-；
L6-mouth mold end length, D1-mouth mold internal diameter, D2-mouth mold end wall thickness.
Specific embodiment
Embodiment one
A kind of polypropylene bellows plug die, length L1 >=250mm of the bellows plug die 4, bellows plug die 4
Middle section be provided with the elongated slot 41 of 4 with bellows plug die centerline axis parallel, the length L2 of elongated slot is 50~100mm, adjacent
Width L3 between two elongated slots be 3~30mm long slot pitch bellows plug die 4 install the distance L4=D of end face × (0.5~
1.5), wherein D is ripple plug die internal diameter；
Multiple apertures 43 are laid at the top of the wave crest 42 of each ripple of bellows plug die 4；
As transformation, it being opened in the numerical value of the item number N of the elongated slot in bellows plug die middle section also changeable, numerical value is 2~
Arbitrary integer between 32, general 4~8 more excellent, and the width L5 of elongated slot is according to the item number of elongated slot and the internal diameter of ripple plug die
It determines, premised on guaranteeing the width between adjacent two elongated slots.
Embodiment two
A kind of corrugated pipe forming head, the corrugated pipe forming head are containing a kind of polypropylene bellows plug die for implementing one
Corrugated pipe forming head, including head die body, vacuum tank 8, mouth mold 2, core model 3, bellows plug die 4 and cooling device；
The vacuum tank 8 is that a volume is greater than the volume of bellows plug die 4 and accommodates the lower bellows plug die
Seal chamber, the front end face center of vacuum tank 8 are provided with preceding mounting hole, and the input end end face center of vacuum tank is provided with rear mounting hole, wave
Line pipe plug die front end is connect by preceding sealing ring 11 with preceding mounting hole, and bellows plug die rear end passes through attachment base and rotary process
Orchid 5 connects, and rotary flange and rear mounting hole are rotatablely connected, set between rotary flange and rear mounting hole rear sealing ring move it is close
It seals, is provided at least one pump orifice for penetrating the outer wall on the outer wall of the vacuum tank；
The mouth mold 2 is mounted on the input end of vacuum tank, and its rear end is connect with head die body, and the front end of mouth mold is equipped with sealing
Step 22 and mouth mold end 21, the mouth mold end pass through the centre bore of rotary flange 5 and put in the port of bellows plug die,
Installation supporting pad 12 and polytetrafluoroethylene (PTFE) pad 13 are set in the sealed step 22 and are linked to be it with mouth mold by locking nut 14
One, the end face of the polytetrafluoroethylene (PTFE) pad 13 and the end face of rotary flange 5 are in close contact to form rotary seal face；It is described
Core model 3 is fitted to 2 center of mouth mold, and there are the channel that ripple blank passes through between core model and mouth mold, the thickness in channel is
For the thickness of bellows pipe；
The cooling device includes interior water composite cooling pipe 6 and external spray head 9, and the pipe of core model 3 is arranged in the interior water composite cooling pipe
In hole 31 and the core model is penetrated through along the central axis of the core model to extend back into bellows plug die 4, its rear end along pore backward
It passes through 3 slave head mould body of core model to draw and pump by the external high-pressure cold water of hose from inside to outside, interior water composite cooling pipe front end has center
Spray head 7；The external spray head 9 is mounted on vacuum chamber interior wall and by the external high-pressure cold water pump of hose.
The diameter D1 of the mouth mold end is equal to 4 internal diameter D of ripple plug die and subtracts 2~20mm, the length L6 of mouth mold end
For 10~50mm, the wall thickness D2 of mouth mold end is 3~5mm.
The quantity of the external spray head 9 is 2~12, is uniformly mounted on vacuum chamber interior wall simultaneously opposite bellows sizing
Mould；The radical of interior water composite cooling pipe 6 in the pore 31 that core model 3 is arranged in is 1~6, positioned at interior 6 front end of water composite cooling pipe
The number of central jets 7 is 1~6.
Claims (5)
1. a kind of polypropylene bellows plug die, it is characterised in that: length L1 >=250mm of the bellows plug die (4), wave
The middle section of line pipe plug die is provided with the elongated slot (43) of N item Yu bellows plug die centerline axis parallel, and the length L2 of elongated slot is 50
~100mm, the width L3 between adjacent two elongated slots are 3~30mm, the distance L4 of long slot pitch bellows plug die installation end face
=D × (0.5~1.5), wherein D is ripple plug die internal diameter；
Multiple apertures (42) are laid at the top of each wave crest of the bellows plug die (4) (41)；
The numerical value of above-mentioned N is the arbitrary integer between 2~32, and general 4~8 more excellent.
2. a kind of corrugated pipe forming head, it is characterised in that: the corrugated pipe forming head is to contain polypropylene described in claim 1
The corrugated pipe forming head of bellows plug die, including head die body, vacuum tank (8), mouth mold (2), core model (3), bellows are fixed
Diameter mould (4) and cooling device；
The vacuum tank (8) is that a volume is greater than the volume of bellows plug die (4) and accommodates the lower bellows plug die
Seal chamber, the front end face center of vacuum tank are provided with preceding mounting hole, and the input end end face center of vacuum tank is provided with rear mounting hole, ripple
Pipe plug die front end is connect by preceding sealing ring (11) with preceding mounting hole, bellows plug die rear end pass through rotary flange (5) and
Sealing ring is connect with rear mounting hole afterwards, at least one pump orifice for penetrating the outer wall is provided on the outer wall of the vacuum tank；
The mouth mold (2) is mounted on the input end of vacuum tank, and its rear end is connect with head die body, and the front end of mouth mold is equipped with sealing station
Rank (22) and mouth mold end (21), the mouth mold end pass through the centre bore of rotary flange (5) and put in bellows plug die
Port installation supporting pad (12) and polytetrafluoroethylene (PTFE) pad (13) and passes through locking nut (14) and makes it on the sealed step (22)
It is connected with mouth mold, the end face of the polytetrafluoroethylene (PTFE) pad (13) is in close contact to be formed with the end face of rotary flange (5)
Rotary seal face；The core model (3) is fitted to mouth mold (2) center, and there are ripple blanks to pass through between core model and mouth mold
Channel；
The cooling device includes interior water composite cooling pipe (6) and external spray head (9), and the interior water composite cooling pipe is arranged in core model (3)
It in pore (31) and penetrates through the core model along the central axis of the core model to extend back into bellows plug die (4), its rear end is along pipe
Hole is passed through core model (3) slave head mould body backward and is drawn from inside to outside and by the external high-pressure cold water pump of hose, interior water composite cooling pipe front end
With central jets (7)；The external spray head (9) is mounted on vacuum chamber interior wall and by the external high-pressure cold water pump of hose.
3. a kind of corrugated pipe forming head as claimed in claim 2, it is characterised in that: the diameter D1 of the mouth mold end is equal to
The internal diameter of ripple plug die subtracts 2~20mm, and the length L6 of mouth mold end is 10~50mm, and the wall thickness D2 of mouth mold end is 3~
5mm。
4. a kind of corrugated pipe forming head as claimed in claim 3, it is characterised in that: the quantity of the external spray head (9) is 2
~12, simultaneously opposite bellows plug die is uniformly mounted on vacuum chamber interior wall.
5. a kind of corrugated pipe forming head as claimed in claim 4, it is characterised in that: pore of the setting in core model (3)
(31) radical of the interior water composite cooling pipe (6) in is 1~6, is located at the number of the central jets (7) of interior water composite cooling pipe (6) front end
It is 1~6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199474.XU CN209454121U (en) | 2018-12-26 | 2018-12-26 | A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822199474.XU CN209454121U (en) | 2018-12-26 | 2018-12-26 | A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die |
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| Publication Number | Publication Date |
|---|---|
| CN209454121U true CN209454121U (en) | 2019-10-01 |
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| CN201822199474.XU Active CN209454121U (en) | 2018-12-26 | 2018-12-26 | A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483845A (en) * | 2018-12-26 | 2019-03-19 | 柳州市瑞和塑料科技有限责任公司 | A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die |
-
2018
- 2018-12-26 CN CN201822199474.XU patent/CN209454121U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483845A (en) * | 2018-12-26 | 2019-03-19 | 柳州市瑞和塑料科技有限责任公司 | A kind of polypropylene bellows plug die and the corrugated pipe forming head containing the plug die |
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