CN207240783U - A kind of PVC board extrusion moulding apparatus - Google Patents
A kind of PVC board extrusion moulding apparatus Download PDFInfo
- Publication number
- CN207240783U CN207240783U CN201721075035.7U CN201721075035U CN207240783U CN 207240783 U CN207240783 U CN 207240783U CN 201721075035 U CN201721075035 U CN 201721075035U CN 207240783 U CN207240783 U CN 207240783U
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- CN
- China
- Prior art keywords
- cavity
- extrusion molding
- booster pump
- pvc board
- moulding apparatus
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of PVC board extrusion moulding apparatus, including by the thermofusion device of plastic hot melt, the booster pump connected with the thermofusion device port of export, the extruded mould connected with booster pump outlet end, the extrusion molding passage for making plastics extrusion moulding is provided with the extruded mould, transition case is provided between the booster pump and extruded mould, it is provided with the cavity connected respectively with booster pump and extrusion molding passage in the transition case, the connectivity part of the connectivity part of extrusion molding passage and cavity less than booster pump and cavity；The cavity is connected with vacuum by vacuum pipe.The beneficial effects of the utility model are：The defects of the utility model can effectively avoid board cavity after shaping into stomata or bubble, so as to improve the yield rate and quality of product, advantageously reduces the risk in industrial production, so as to save production cost.
Description
Technical field
Extrusion molding field is the utility model is related to, is a kind of PVC board extrusion moulding apparatus specifically.
Background technology
Extrusion molding is to heat plastic raw materials, is allowed to, in glutinous stream mode, under the action of pressurization, by extruded mould become
Section and the similar non-individual body of Oral incision, it is glassy state then to carry out cooling and shaping, cleaved and obtain having certain geometry
The plastic products of shape and size.This method can produce pipe, cylinder, rod, film, piece, profile shapes, electric wire etc..Under the conditions of the prior art, squeeze
Often occurs the defects of stomata or bubble in molding product, the principal element of the defect occur includes that temperature control is excessive, plastics make moist
Having moisture, parking for a long time to cause decomposition plastics not exclude, clean, natural environment humidity is high, the water in extrusion moulding apparatus or gas contain
Measure excessive.
Utility model content
The purpose of this utility model is to provide it is a kind of it is simple in structure, easy to use, stomata or bubble etc. can be reduced lack
Fall into the PVC board extrusion moulding apparatus produced.
The utility model is achieved through the following technical solutions：A kind of PVC board extrusion moulding apparatus, including the hot melt by plastic hot melt
Device, the booster pump connected with the thermofusion device port of export, the extruded mould connected with booster pump outlet end, the extruded mould
The extrusion molding passage for making plastics extrusion moulding is inside provided with, transition case is provided between the booster pump and extruded mould,
The cavity connected respectively with booster pump and extrusion molding passage is provided with the transition case, extrusion molding passage is low with the connectivity part of cavity
In the connectivity part of booster pump and cavity；The cavity is connected with vacuum by vacuum pipe.This programme is by using vacuum
Gas extraction inside device can be gone out and avoid because there are gas inside equipment the product of extrusion molding being held by device in advance
Easily there is the defects of stomata or bubble.Early period plastics enter inside device but when be not fully filled with device inner space,
The gas in liquid plastic can be made to be separated in the situation of negative pressure with liquid plastic and avoid being mixed into liquid plastic
Gas causes the defects of stomata or bubble.So that this programme can improve the quality of product.
The cavity is connected with conical through-hole；The cavity is connected by conical through-hole with extrusion molding passage, described
The small end of conical through-hole is directed toward extruded mould.The pressure inside liquid plastic can be increased using conical through-hole so as to be mixed into
Gas inside liquid plastic it is upward to avoid stomata or bubble is formed in plate after shaping the defects of.
The extrusion molding passage is laterally set, according to the circulating direction of plastics, the length dimension of extrusion molding channel cross-section by
It is cumulative plus, height dimension is gradually reduced and cross-sectional area remains unchanged.It can ensure to lead in the constant situation extrusion molding of pressure with this
The flow for the liquid plastic that cross section passes through keeps identical everywhere in road, so as to avoid causing to occur because of mass flow discrepancy recessed
The defects of falling into, or avoid outside air from being mixed into extrusion molding channel interior by the outlet of extrusion molding passage and cause stomata or bubble etc.
Defect.
Two extrusion molding passages are symmetrically arranged with the extruded mould, and two extrusion molding passages pass through same hole and mistake
Cross case connection.Production efficiency is improved easy to two-way operation with this, and avoids forming high pressure in cavity inside and causing the energy
Waste.
The cavity is cylinder, is provided with the central shaft coaxial with cavity in cavity, is set on the central shaft
There is the helical blade that diameter is identical with cavity diameter；The length of the helical blade is less than or equal to the length of cavity.Utilize
Helical blade can increase the stroke of liquid plastic, so as to be conducive to make to be mixed into condition of the gas in liquid plastic in negative pressure
Under be sufficiently separated.
The driving motor being connected with central shaft driven is provided with the outside of the transition case.It is easy to utilize driving electricity with this
Machine drives helical blade to rotate, so that be conducive to be pressurized liquid plastic, or after machining, control booster pump is anti-
Turn, liquid plastic is flowed back and avoid forming residual in cavity.
The exit of the extrusion molding passage is detachably provided with slab type mold, is provided with and is used on the slab type mold
Make the forming hole of plastic shaping, the length and width dimensions of the forming hole are less than the length and width dimensions of extrusion molding channel outlet.It is easy to this
The plate with different sizes and shapes requirement is prepared using slab type mold, improves the scope of application of this programme.
The utility model compared with prior art, has the following advantages and beneficial effect：
The defects of the utility model can effectively avoid board cavity after shaping into stomata or bubble, so as to improve production
The yield rate and quality of product, advantageously reduce the risk in industrial production, so as to save production cost.
Brief description of the drawings
Fig. 1 is the structure diagram of this programme；
Fig. 2 is the structure diagram of embodiment 6；
Wherein 1-thermofusion device, 2-booster pump, 3-transition case, 4-vacuum pipe, 5-vacuum, 6-helical-blade
Piece, 7-conical through-hole, 8-slab type mold, 9-extrusion molding passage, 10-extruded mould, 11-driving motor.
Embodiment
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is not
It is limited to this.
Embodiment 1：
As shown in Figure 1, in the present embodiment, a kind of PVC board extrusion moulding apparatus, including by the thermofusion device 1 of plastic hot melt, with heat
Booster pump 2, the extruded mould 10 that is connected with 2 port of export of booster pump of 1 port of export of fusing device connection, in the extruded mould 10
The extrusion molding passage 9 for making plastics extrusion moulding is provided with, transition case is provided between the booster pump 2 and extruded mould 10
3, the cavity connected respectively with booster pump 2 and extrusion molding passage 9, the company of extrusion molding passage 9 and cavity are provided with the transition case 3
Connectivity part of the logical place less than booster pump 2 and cavity；The cavity is connected with vacuum 5 by vacuum pipe 4.Before work,
Extrusion molding passage 9 is obtained exit seal, and air in transition case 3 is extracted using vacuum 5.Addition PVC in hot melt device 1
Grain, and PVC granule is heated using thermofusion device 1 and forms liquid plastic, start booster pump 2, the negative pressure in transition case 3
And liquid plastic is entered in transition case 3 under the action of booster pump 2.The sealing of extrusion molding passage 9 is opened, is continued in booster pump 2
Under the action of work, liquid plastic is left inside this programme by extrusion molding passage 9 and is cooled and shaped by cooling device, by follow-up
Liquid plastic promote molding plastics to move forward.In the present embodiment, the thermofusion device and cooling device are existing skill
Art, and it is not as the improvement of this programme, and content of the those skilled in the art according to described in the application can be realized
Effect is stated, the concrete structure of thermofusion device and cooling device is not repeated herein.Extracted using vacuum 5 in transition case 3
Air, and enable extrusion molding passage 9 kept before liquid plastic is extruded sealing effectively avoid gas enter liquid modeling
The defects of stomata or bubble being formed in material.Also, early period liquid plastic enter device inside but be not fully filled with device
When portion space, the gas in liquid plastic can be made to be separated in the situation of negative pressure with liquid plastic and avoid being mixed into
Gas in liquid plastic causes the defects of stomata or bubble.By making transition case 3 and the connectivity part of booster pump 2 be less than cavity
Peak, can realize makes all the time there are a negative pressure region in cavity, so as to be conducive to make subsequently to be mixed into liquid plastic
Gas separated under the action of negative pressure with liquid plastic and enter negative pressure region.There is stomata or gas so as to reduce in product
The defects of bubble.
Embodiment 2：
On the basis of above-described embodiment, in the present embodiment, the cavity is connected with conical through-hole 7；The cavity
Connected by conical through-hole 7 with extrusion molding passage 9, the small end of the conical through-hole 7 is directed toward extruded mould 10.Utilize conical through-hole
7 can increase pressure inside liquid plastic so as to which the gas being mixed into inside liquid plastic is upward to avoid being molded
The defects of stomata or bubble are formed in plate afterwards.In the present embodiment, other parts not described and the content of above-described embodiment
It is identical, therefore do not repeat.
Embodiment 3：
On the basis of above-described embodiment, in the present embodiment, the extrusion molding passage 9 is laterally set, according to the stream of plastics
Logical direction, the length dimension of 9 cross section of extrusion molding passage gradually increases, height dimension is gradually reduced and cross-sectional area remains unchanged.
It can ensure that the flow for the liquid plastic that cross section passes through keeps phase everywhere in the constant situation extrusion molding passage 9 of pressure with this
Together, so that the defects of avoiding causing to be recessed because of mass flow discrepancy, or the outlet for avoiding outside air from passing through extrusion molding passage 9
The defects of being mixed into the inside of extrusion molding passage 9 and causing stomata or bubble.In the present embodiment, other parts not described and above-mentioned reality
It is identical to apply the content of example, therefore does not repeat.
Embodiment 4：
On the basis of above-described embodiment, in the present embodiment, two extrusion moldings are symmetrically arranged with the extruded mould 10
Passage 9, and two extrusion molding passages 9 are connected by same hole with transition case 3.Effect of the liquid plastic in pressure can be made with this
Under from both direction separating device inner space realize two-way operation, production efficiency is improved with this, is avoided in cavity inside shape
Energy waste is caused into high pressure, and advantageously reduces equipment cost, by being not by the exit design of two extrusion molding passages 9
Same shape can also process two kinds of different products at the same time, so as to improve the scope of application of this programme.In the present embodiment, its
The part that he does not describe is identical with the content of above-described embodiment, therefore does not repeat.
Embodiment 5：
On the basis of above-described embodiment, in the present embodiment, the cavity is cylinder, is provided with cavity and cavity
Coaxial central shaft, is provided with the diameter helical blade 6 identical with cavity diameter on the central shaft；The helical blade
6 length is less than or equal to the length of cavity.The stroke of liquid plastic can be increased using helical blade 6, so as to be conducive to make
The gas being mixed into liquid plastic is sufficiently separated under conditions of negative pressure, to reduce the general of the defects of stomata or bubble occur
Rate.In the present embodiment, other parts not described are identical with the content of above-described embodiment, therefore do not repeat.
Embodiment 6：
As shown in Fig. 2, on the basis of above-described embodiment, in the present embodiment, the outside of the transition case 3 be provided with
The driving motor 11 of central shaft driven connection.Drive helical blade 6 to rotate by making motor 11 just transfer machine, utilize helical blade
Rotation drive liquid plastic movement, so as to be conducive to be pressurized liquid plastic.The cavity after the completion of production and processing
Interior residue has liquid plastic, inverts motor 11 and controls booster pump to invert or open, and utilizes the rotation band hydrodynamic of helical blade 6
State plastics flow back and avoid forming residual in cavity, avoid remaining liquid plastic from being cooled and shaped and cause later stage cleaning tired
It is difficult.In the present embodiment, other parts not described are identical with the content of above-described embodiment, therefore do not repeat.
Embodiment 7：
On the basis of above-described embodiment, in the present embodiment, the exit of the extrusion molding passage 9 is detachably provided with plate
Pattern has 8, and the forming hole for making plastic shaping, the length and width dimensions of the forming hole are provided with the slab type mold 8
The length and width dimensions exported less than extrusion molding passage 9.With this be easy to using the slab type mold 8 exported with different shape come prepare with
The plate of different sizes and shapes requirement, improves the scope of application of this programme, and only need to change slab type mold 8 to prepare
Different plate, advantageously reduces the costs such as use, the maintenance of equipment.In the present embodiment, other parts not described with it is above-mentioned
The content of embodiment is identical, therefore does not repeat.
The above, is only the preferred embodiment of the utility model, and limit in any form is not done to the utility model
System, every any simple modification made according to the technical essence of the utility model to above example, equivalent variations, each falls within
Within the scope of protection of the utility model.
Claims (7)
1. a kind of PVC board extrusion moulding apparatus, including the thermofusion device by plastic hot melt（1）With thermofusion device（1）Port of export connection
Booster pump（2）With booster pump（2）The extruded mould of port of export connection（10）, the extruded mould（10）Inside it is provided with and is used for
Make the extrusion molding passage of plastics extrusion moulding（9）, it is characterised in that：The booster pump（2）With extruded mould（10）Between set
There is transition case（3）, the transition case（3）Inside be provided with respectively with booster pump（2）With extrusion molding passage（9）The cavity of connection, is squeezed
Mould passage（9）It is less than booster pump with the connectivity part of cavity（2）With the connectivity part of cavity；The cavity passes through vacuum pipe（4）
It is connected with vacuum（5）.
A kind of 2. PVC board extrusion moulding apparatus according to claim 1, it is characterised in that：The cavity is connected with taper and leads to
Hole（7）；The cavity passes through conical through-hole（7）With extrusion molding passage（9）Connection, the conical through-hole（7）Small end be directed toward
Extruded mould（10）.
A kind of 3. PVC board extrusion moulding apparatus according to claim 1 or 2, it is characterised in that：The extrusion molding passage（9）It is horizontal
To setting, according to the circulating direction of plastics, extrusion molding passage（9）The length dimension of cross section gradually increases, height dimension gradually subtracts
Small and cross-sectional area remains unchanged.
A kind of 4. PVC board extrusion moulding apparatus according to claim 3, it is characterised in that：The extruded mould（10）It is interior right
Title is provided with two extrusion molding passages（9）, and two extrusion molding passages（9）Pass through same hole and transition case（3）Connection.
A kind of 5. PVC board extrusion moulding apparatus according to any one of claim 1,2,4, it is characterised in that：The cavity
For cylinder, the central shaft coaxial with cavity is provided with cavity, diameter and cavity diameter phase are provided with the central shaft
Same helical blade（6）；The helical blade（6）Length be less than or equal to cavity length.
A kind of 6. PVC board extrusion moulding apparatus according to claim 5, it is characterised in that：The transition case（3）Outside set
It is equipped with the driving motor being connected with central shaft driven（11）.
A kind of 7. PVC board extrusion moulding apparatus according to any one of claim 1,2,4,6, it is characterised in that：Described squeezes
Mould passage（9）Exit slab type mold is detachably installed（8）, the slab type mold（8）On be provided with for making plastics
Molding forming hole, the length and width dimensions of the forming hole are less than extrusion molding passage（9）The length and width dimensions of outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721075035.7U CN207240783U (en) | 2017-08-25 | 2017-08-25 | A kind of PVC board extrusion moulding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721075035.7U CN207240783U (en) | 2017-08-25 | 2017-08-25 | A kind of PVC board extrusion moulding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207240783U true CN207240783U (en) | 2018-04-17 |
Family
ID=61882497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721075035.7U Expired - Fee Related CN207240783U (en) | 2017-08-25 | 2017-08-25 | A kind of PVC board extrusion moulding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207240783U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624970A (en) * | 2019-10-03 | 2019-12-31 | 陈鹏 | Aluminum alloy extruder capable of taking out internal bubbles by utilizing self-rotation |
-
2017
- 2017-08-25 CN CN201721075035.7U patent/CN207240783U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624970A (en) * | 2019-10-03 | 2019-12-31 | 陈鹏 | Aluminum alloy extruder capable of taking out internal bubbles by utilizing self-rotation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20200825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |