CN205969888U - Plastic products extrusion device - Google Patents
Plastic products extrusion device Download PDFInfo
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- CN205969888U CN205969888U CN201620798890.XU CN201620798890U CN205969888U CN 205969888 U CN205969888 U CN 205969888U CN 201620798890 U CN201620798890 U CN 201620798890U CN 205969888 U CN205969888 U CN 205969888U
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- Prior art keywords
- screw rod
- extrusion
- plastic products
- machine barrel
- extrusion device
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Abstract
The utility model discloses a plastic products extrusion device, it includes: the barrel, the barrel have the passageway of extruding and with extrude the feed inlet that the passageway is linked together, the feed seat, the feed seat is installed on the barrel, and the feed seat with the feed inlet is linked together, a screw rod, the screw rod rotatably supports on the barrel, the screw rod stretches into extrude the passageway to it extrudes the clearance to form on screw rod and the barrel to reserve between the wall of extruding the passageway, screw rod rotary driving mechanism, screw rod rotary driving mechanism with screw drive connects, so that the drive of screw rod rotary driving mechanism the screw rod is rotatory for the barrel. The utility model discloses can accomplish solid conveying in succession steadily, extrude the melt who provides complete plastify for the die head.
Description
Technical field
The utility model is related to a kind of plastic products extrusion device, belongs to plastics machinery industry, can be used for by continuously squeezing
The mode going out produces the products such as bar, sheet material, profile shapes.
Background technology
At present, ultra-high molecular weight polyethylene (UHMW-PE) is the thermoplastic engineering plastic that molecular weight is higher than 1,500,000, molecule
Chain length is 10-20 times of high density polyethylene (HDPE).The superior performance of ultra-high molecular weight polyethylene, with common polythene and other work
Engineering plastics are compared, and have unrivaled comprehensive serviceability, wearability is high, impact, good, the resistance to various burn intos of self lubricity
Health is nontoxic, cold resistance is strong, can in the environment of -80 DEG C Long-Time Service.The parts of various machineries can be done, including food machinery
Gear, worm gear, worm screw, bearing；Pump, valve, plate washer, filter plate etc. is done in chemical industry.The shaped piece made due to ultra-high polyethylene
Size and appearance itself can customize it is possible to be applied to various fields, and market prospects are boundless.
But, because the molecular weight of ultra-high molecular weight polyethylene is up to millions of, the extraordinary unordered entanglement of molecule interchain makes
Its molecule segment to warm-up movement delay of response, show as melt viscosity be up to 1 × 108Pa s, mobility extreme difference, in addition critical
Shear rate is extremely low, the shortcomings of be also easy to produce melt fracture so as to be difficult to be processed with the process technology of common plastics.In addition,
Ultra-high molecular weight polyethylene plasticization temperature is higher, itself is susceptible to degrade, leads to mechanical properties decrease, extrusion requires
Height, seriously constrains the popularization and application of ultra-high molecular weight polyethylene.
Content of the invention
Technical problem to be solved in the utility model is the defect overcoming prior art, provides a kind of plastic products extrusion
Device, it can continuously and stably complete Solid Conveying and Melting, provide the melt body of plasticizing completely for die head extrusion.
The utility model solves above-mentioned technical problem and adopts the technical scheme that：A kind of plastic products extrusion device, it wraps
Include：
Machine barrel, described machine barrel has extrusion passage and the spout being connected with described extrusion passage；
Feeding seat, described feeding seat is arranged on machine barrel, and described feeding seat is connected with described spout；
Screw rod, described screw rod can be rotated to support on machine barrel, and described screw rod stretches into described extrusion passage, and screw rod with
It is reserved with extrusion gap between the wall that extrusion passage is formed on machine barrel；
Screw rod rotary drive mechanism, described screw rod rotary drive mechanism is connected with described screw drive, so that described screw rod
Rotary drive mechanism drives described screw rod to rotate with respect to machine barrel.
Further for guarantee screw rod can steady extruding, enable screw rod rotary drive mechanism to export enough moments of torsion,
The frequency converter of the output speed of adjusting screw rod rotary drive mechanism is provided with described screw rod rotary drive mechanism.
The powder of use can stablize material feeding in feeding seat further, and the roughness of the inner surface of described feeding seat is little
In Ra0.8.
Further, described feeding seat tool has the material chamber of pyramidal structure in big top and small bottom.
Further for avoiding occurring situation about building bridge in feeding seat, thus having influence on the normal extrusion of equipment, described
The cone angle in material chamber is 18 °～22 °.
Further, described machine barrel is provided with cooling ring.
Further, described screw rod includes feed zone, compression section and metering section successively along the extrusion direction of extrusion passage.
Further, the external diameter of described screw rod is D, the bottom footpath d1=0.8D of described feed zone, length L1=of feed zone
4.35D, the bottom footpath d2=0.88D of metering section, length L3=3.65D of metering section, length L2=17D of compression section, described enter
Helical pitch t=0.67D of material section, compression section and metering section.
Further for the transfer efficiency improving to material, the wall that described machine barrel forms extrusion passage is along extrusion direction
It is provided with groove.
Further, described groove is arranged on the privileged site of the wall forming extrusion passage on described machine barrel, described specific
Position is described screw rod from the initiating terminal of feed zone extends to the corresponding position of the initial segment of metering section.
Further for avoiding leading to material melt body to rupture due to intensive shear, reduce the physical property of the product produced
Phenomenon, described groove along extrusion direction from depth to shallow.
After employing technique scheme, this plastic products extrusion device in an extrusion process, can be continuously and stably complete
Become Solid Conveying and Melting, the melt body of plasticizing completely is provided for die head extrusion, meets and produce needs.
Brief description
Fig. 1 is the structural representation of plastic products extrusion device of the present utility model；
Fig. 2 is the structural representation of screw rod of the present utility model.
Specific embodiment
In order that content of the present utility model is easier to be clearly understood, below according to specific embodiment and with reference to attached
Figure, is described in further detail to the utility model.
As shown in Figure 1, 2, a kind of plastic products extrusion device, it includes：
Machine barrel 1, described machine barrel 1 has extrusion passage and the spout being connected with described extrusion passage；
Feeding seat 4, described feeding seat 4 is arranged on machine barrel 1, and described feeding seat 4 is connected with described spout；
Screw rod 2, described screw rod 2 can be rotated to support on machine barrel 1, and described screw rod 2 stretches into described extrusion passage, and spiral shell
It is reserved with extrusion gap between the wall that extrusion passage is formed on bar 2 and machine barrel 1；
Screw rod rotary drive mechanism, described screw rod rotary drive mechanism is in transmission connection with described screw rod 2, so that described screw rod
Rotary drive mechanism drives described screw rod 2 to rotate with respect to machine barrel 1.
The frequency converter of the output speed of adjusting screw rod rotary drive mechanism is provided with described screw rod rotary drive mechanism.Become
Frequency device guarantee screw rod 2 can steady extruding, described screw rod rotary drive mechanism can export enough moments of torsion, by frequency converter
The output speed of adjusting screw rod rotary drive mechanism.
The roughness of the inner surface of described feeding seat 4 is less than Ra0.8.
Described feeding seat 4 has the material chamber of pyramidal structure in big top and small bottom, and the cone angle in described material chamber is 18 °～22 °.
Due to ultrahigh molecular weight polyethylene powder mobility extreme difference, the inwall of feeding seat 4 must be extremely smooth, otherwise powder
The inwall being attached to feeding seat 4 can form choked flow effect, leads to blanking unstable；In addition ultrahigh molecular weight polyethylene powder is adding
Be constantly in soft fluffy state in hopper, rely on self gravitation charging, summarized by production practices, the cone angle of feeding seat 4 excessive or
The too small situation that all can occur building bridge in hopper, thus having influence on the normal extrusion of equipment, the cone angle in described material chamber is defined to
18 °～22 ° proper.
As shown in Figure 1, 2, described machine barrel 1 is provided with cooling ring 3.
As shown in Figure 1, 2, described screw rod 2 includes feed zone 21, compression section 22 successively along the extrusion direction of extrusion passage
With metering section 23.
As shown in Figure 1, 2, the external diameter of described screw rod 2 is D, the bottom footpath d1=0.8D of described feed zone 21, feed zone 21
Length L1=4.35D, the bottom footpath d2=0.88D of metering section 23, length L3=3.65D of metering section 23, the length of compression section 22
L2=17D, helical pitch t=0.67D of described feed zone 21, compression section 22 and metering section 23.
As shown in Figure 1, 2, in order to improve the transfer efficiency to material for the ultra-high molecular weight polyethylene extrusion equipment, described machine barrel
The wall forming extrusion passage on 1 is provided with groove 11 along extrusion direction.
As shown in Figure 1, 2, described groove 11 is arranged on the privileged site of the wall forming extrusion passage on described machine barrel 1,
Described privileged site is described screw rod 2 from the initiating terminal of feed zone 21 extends to the corresponding portion of initiating terminal of metering section 23
Position.The conveying of material, screw rod spiral shell rib pressure surface and spiral shell edge surface when screw rod 2 rotates, can be realized in screw rod spiral shell rib pressure surface
Drive the material of machine barrel 1 inner wall trench to be fed forward, thus improve the transfer efficiency of material simultaneously.
As shown in Figure 1, 2, described groove 11 along extrusion direction from depth to shallow.
Particular embodiments described above, the technical problem that the utility model is solved, technical scheme and beneficial effect are entered
Go further description, should be understood that and the foregoing is only specific embodiment of the utility model, and without
In restriction the utility model, all any modification, equivalent substitution and improvement within spirit of the present utility model and principle, done
Deng should be included within protection domain of the present utility model.
Claims (10)
1. a kind of plastic products extrusion device is it is characterised in that it includes：
Machine barrel (1), described machine barrel (1) has extrusion passage and the spout being connected with described extrusion passage；
Feeding seat (4), described feeding seat (4) is arranged on machine barrel (1), and described feeding seat (4) is connected with described spout
Logical；
Screw rod (2), described screw rod (2) can be rotated to support on machine barrel (1), and described screw rod (2) stretches into described extrusion passage, and
And screw rod (2) and upper formation of machine barrel (1) are reserved with extrusion gap between the wall extruding passage；
Screw rod rotary drive mechanism, described screw rod rotary drive mechanism is in transmission connection with described screw rod (2), so that the rotation of described screw rod
Turning drive mechanism drives described screw rod (2) to rotate with respect to machine barrel (1).
2. plastic products extrusion device according to claim 1 it is characterised in that：Set on described screw rod rotary drive mechanism
It is equipped with the frequency converter of the output speed of adjusting screw rod rotary drive mechanism.
3. plastic products extrusion device according to claim 1 it is characterised in that：The inner surface of described feeding seat (4)
Roughness is less than Ra0.8.
4. plastic products extrusion device according to claim 1 it is characterised in that：Described feeding seat (4) has presents greatly
Under little shape pyramidal structure material chamber, the cone angle in described material chamber is 18 °～22 °.
5. plastic products extrusion device according to claim 1 it is characterised in that：It is provided with cooling on described machine barrel (1)
Ring (3).
6. plastic products extrusion device according to claim 1 it is characterised in that：Described screw rod (2) is along extrusion passage
Extrusion direction include feed zone (21), compression section (22) and metering section (23) successively.
7. plastic products extrusion device according to claim 6 it is characterised in that：The external diameter of described screw rod (2) is D, institute
State the bottom footpath d1=0.8D of feed zone (21), length L1=4.35D of feed zone (21), the bottom footpath d2=of metering section (23)
0.88D, length L3=3.65D of metering section (23), length L2=17D of compression section (22), described feed zone (21), compression section
(22) and metering section (23) helical pitch t=0.67D.
8. plastic products extrusion device according to claim 6 it is characterised in that：The upper extrusion that formed of described machine barrel (1) is led to
The wall in road is provided with groove (11) along extrusion direction.
9. plastic products extrusion device according to claim 8 it is characterised in that：Described groove (11) is arranged on described machine
The privileged site of the upper wall forming extrusion passage of cylinder (1), described privileged site is described screw rod (2) from feed zone (21)
Top extends to the corresponding position of initiating terminal of metering section (23).
10. plastic products extrusion device according to claim 9 it is characterised in that：Described groove (11) is along extrusion side
To from depth to shallow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620798890.XU CN205969888U (en) | 2016-07-11 | 2016-07-11 | Plastic products extrusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620798890.XU CN205969888U (en) | 2016-07-11 | 2016-07-11 | Plastic products extrusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205969888U true CN205969888U (en) | 2017-02-22 |
Family
ID=58026782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620798890.XU Active CN205969888U (en) | 2016-07-11 | 2016-07-11 | Plastic products extrusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205969888U (en) |
-
2016
- 2016-07-11 CN CN201620798890.XU patent/CN205969888U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |