CN204687283U - A kind of screw injection device - Google Patents
A kind of screw injection device Download PDFInfo
- Publication number
- CN204687283U CN204687283U CN201520248602.9U CN201520248602U CN204687283U CN 204687283 U CN204687283 U CN 204687283U CN 201520248602 U CN201520248602 U CN 201520248602U CN 204687283 U CN204687283 U CN 204687283U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- spiral
- injection device
- plastics
- shell rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a kind of screw injection device, the plasticizing injection mechanism comprising hopper and be communicated with described hopper, described plasticizing injection mechanism comprises and to be communicated with described hopper, there is the barrel of jet hole, be axially set in the screw rod in described barrel, and drive the driving mechanism of described bolt rotary, the internal perisporium of described barrel is provided with helicla flute in the shape of a spiral, the described spiral fluted hand of spiral is consistent with the hand of spiral of spiral shell rib on described screw rod, and the spiral shell rib on described screw rod can partly be placed in described helicla flute, described screw rod is arranged with check ring near one end of described jet hole.Screw injection device of the present utility model can make plastics helically state motion, avoids " laminar flow " phenomenon; Meanwhile, screw rod and helicla flute all can apply shearing force to plastics, and plastics, under the effect of twinshell, can at utmost stir plastics, make plastics melting even, ensure that injection mo(u)lding quality.
Description
Technical field
The utility model relates to injection machine accessory field, particularly relates to a kind of screw injection device.
Background technology
Injection mo(u)lding is the main forming method of plastics, is characterized in that production efficiency is high, strong to the flexibility (adaptability) of operation of various plastics, and energy forming shape is complicated, accurate in size injecting products, and application is extensive.Its production process is: first the solid plastics of granular (or powdery) is plastified into the plastic melt that the plasticity with uniform density, viscosity and composition is good, inject enter in the die cavity of mould by applying certain pressure and making this kind of plastic melt possess certain flow rate again, after plastic melt cooling and shaping, just can obtain the plastic products consistent with die profile.
In injection mold system be by nozzle by the material injection sent here by barrel in mould, and barrel is the strength member of Plasticized component, the exterior heating collar of interior loading screw, bears the effect of combined stress and thermal stress.Its injection moulding process is: when screw rod rotates in barrel, the roll of plastic feeding cylinder that hopper is added, and progressively pushed forward, compacting, exhaust and plasticizing, the plastics of melting constantly accumulate between screw tip and nozzle, and screw rod originally experience melt pressure and slowly after move, when the melt accumulated reaches injection shot, screw rod stops operating, during injection, hydraulic pressure or mechanical force are passed to melt by screw rod makes it inject mould.
At present, material tube inner wall is smooth structure, screw rod rotates in the process of plastics propelling movement, compacting, exhaust and plasticizing, because having gap between the spiral shell rib on screw rod and material tube inner wall, make plastics in " laminar flow " state motion in barrel, in addition, because the existence in this gap, limit the shearing force of screw rod to plastics, cause plastic molting uneven, easy-formation defective products.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model be to provide a kind of can make plastic molting evenly, there is the injection moulding apparatus of larger shearing force.
Screw injection device of the present utility model, the plasticizing injection mechanism comprising hopper and be communicated with described hopper, described plasticizing injection mechanism comprises and to be communicated with described hopper, there is the barrel of jet hole, be axially set in the screw rod in described barrel, and drive the driving mechanism of described bolt rotary, it is characterized in that: the internal perisporium of described barrel is provided with helicla flute in the shape of a spiral, the described spiral fluted hand of spiral is consistent with the hand of spiral of spiral shell rib on described screw rod, and the spiral shell rib on described screw rod can partly be placed in described helicla flute, described screw rod is arranged with check ring near one end of described jet hole.
Further, described barrel periphery wall is radially provided with several for placing the groove of heater.
Further, described spiral fluted cross section is recessed circle, the deep equality of the described spiral fluted degree of depth and described spiral shell rib.
Further, described spiral shell rib inserts the half that the described spiral fluted degree of depth is the described spiral shell rib degree of depth.
Further, the root rounding of described spiral shell rib.
Further, the end of described jet hole has straightway.
Further, described driving mechanism is motor, and described screw rod is connected with described motor-driven by connecting screw rod propeller.
By such scheme, screw injection device of the present utility model can make plastics helically state motion, avoids " laminar flow " phenomenon; Meanwhile, screw rod and helicla flute all can apply shearing force to plastics, and plastics, under the effect of twinshell, can at utmost stir plastics, make plastics melting even, ensure that injection mo(u)lding quality.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of description, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
See Fig. 1, a kind of screw injection device described in the utility model one preferred embodiment, the plasticizing injection mechanism comprising hopper 10 and be communicated with hopper 10, plasticizing injection mechanism comprises barrel 20 that be communicated with hopper 10, that have jet hole 30, be axially set in the screw rod 40 in barrel 20, and the driving mechanism 50 that drive screw 40 rotates, driving mechanism 50 is motor, and screw rod 40 is connected with motor-driven by connecting screw rod propeller 60.The internal perisporium of barrel 20 of the present utility model is provided with helicla flute 21 in the shape of a spiral, and the hand of spiral of helicla flute 21 is consistent with the hand of spiral of spiral shell rib 41 on screw rod 40, and the spiral shell rib 41 on screw rod 40 can partly be placed in helicla flute 21.By arranging helicla flute 21 on the inwall of barrel 20 in the utility model, spiral shell rib 41 on screw rod 40 can be partly placed in helicla flute 21, namely spiral shell rib 41 forms concavo-convex coordinating with helicla flute 21, so, when screw rod 40 rotates, plastics are involved in barrel 20 from hopper 10 by screw rod 40, plastics are first twisted between two spiral shell ribs 41 of screw rod 40, along with rotation pushes, plastics advance in helicla flute 21 by spiral shell rib 41, because of helicla flute 21 in the shape of a spiral, thus plastics helically state motion can be made, therefore avoid " laminar flow " phenomenon; Simultaneously, plastics shearing force can be supplied to when screw rod 40 rotates, again because the spiral shell rib 41 on screw rod 40 coordinates with helicla flute 21, helicla flute 21 also can provide shearing force to plastics, plastics are under the effect of twinshell, at utmost can stir plastics, make plastics melting even, ensure that injection mo(u)lding quality.
Preferably, the cross section of the helicla flute 21 in the utility model is recessed circle, and the deep equality of the degree of depth of helicla flute 21 and spiral shell rib 41, concrete, the degree of depth that spiral shell rib 41 inserts helicla flute 21 is the half of spiral shell rib 41 degree of depth, so that plastics can enter between helicla flute 21 and spiral shell rib 41, can guarantee that plastics can spirally state move on the one hand, helicla flute 21 and spiral shell rib 41 pairs of plastics can be made on the other hand to implement shearing force.
Because of plastics helically state motion, for preventing plastics because of adverse current, screw rod 40 near one end of jet hole 30 sheathed check ring 42.
The utility model is at the root rounding of spiral shell rib 41, and it is too tight that rounding makes plastics not easily bond with screw rod 40, is conducive to plastics and advances toward jet hole 30 direction.
As the preferred embodiment of the utility model volume, the periphery wall of barrel 20 is radially provided with several for placing the groove 22 of heater, groove 22 is set, heater and groove 22 can be made to fit tightly, the heat utilizing heater to produce to greatest extent, to the plastic molting in barrel 20, reduces the loss of heat.
Preferably, the end of the jet hole 30 of barrel 20 end has straightway, and jet hole 30 is more easily extend in injection mold, in case the plastics of melting are at jet hole 30 place " salivation ".
The above is only preferred embodiment of the present utility model; be not limited to the utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (7)
1. a screw injection device, the plasticizing injection mechanism comprising hopper and be communicated with described hopper, described plasticizing injection mechanism comprises and to be communicated with described hopper, there is the barrel of jet hole, be axially set in the screw rod in described barrel, and drive the driving mechanism of described bolt rotary, it is characterized in that: the internal perisporium of described barrel is provided with helicla flute in the shape of a spiral, the described spiral fluted hand of spiral is consistent with the hand of spiral of spiral shell rib on described screw rod, and the spiral shell rib on described screw rod can partly be placed in described helicla flute, described screw rod is arranged with check ring near one end of described jet hole.
2. screw injection device according to claim 1, is characterized in that: described barrel periphery wall is radially provided with several for placing the groove of heater.
3. screw injection device according to claim 1, is characterized in that: described spiral fluted cross section is recessed circle, the deep equality of the described spiral fluted degree of depth and described spiral shell rib.
4. screw injection device according to claim 3, is characterized in that: described spiral shell rib inserts the half that the described spiral fluted degree of depth is the described spiral shell rib degree of depth.
5. screw injection device according to claim 4, is characterized in that: the root rounding of described spiral shell rib.
6. screw injection device according to claim 1, is characterized in that: the end of described jet hole has straightway.
7. screw injection device according to claim 1, is characterized in that: described driving mechanism is motor, and described screw rod is connected with described motor-driven by connecting screw rod propeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520248602.9U CN204687283U (en) | 2015-04-23 | 2015-04-23 | A kind of screw injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520248602.9U CN204687283U (en) | 2015-04-23 | 2015-04-23 | A kind of screw injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204687283U true CN204687283U (en) | 2015-10-07 |
Family
ID=54227617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520248602.9U Expired - Fee Related CN204687283U (en) | 2015-04-23 | 2015-04-23 | A kind of screw injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204687283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816441A (en) * | 2015-04-23 | 2015-08-05 | 苏州乔布注塑工业有限公司 | Screw type injection molding device |
-
2015
- 2015-04-23 CN CN201520248602.9U patent/CN204687283U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816441A (en) * | 2015-04-23 | 2015-08-05 | 苏州乔布注塑工业有限公司 | Screw type injection molding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |