CN203680759U - Sleeve of injection molding machine - Google Patents
Sleeve of injection molding machine Download PDFInfo
- Publication number
- CN203680759U CN203680759U CN201420044826.3U CN201420044826U CN203680759U CN 203680759 U CN203680759 U CN 203680759U CN 201420044826 U CN201420044826 U CN 201420044826U CN 203680759 U CN203680759 U CN 203680759U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- diameter
- melt
- charging hole
- pressure
- 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 discloses a sleeve of an injection molding machine. The sleeve comprises a sleeve body and a feeding part arranged at the front part of the sleeve part, the middle of the feeding part is provided with a first feeding hole and a plurality of second feeding holes symmetrically distributed at the periphery of the first feeding hole, and the diameter of the first feeding hole is more than that of the second feeding hole. The sleeve can ensure that the shearing force can act on a melt during use, so as to improve the plasticization of the melt, equalize the pressure in the melt, and ensure the pressure stressed on the wall of a pipeline connected with the sleeve to be safe pressure.
Description
Technical field
The utility model relates to a kind of parts of injection machine, more particularly, is the sleeve that a kind of injection machine is used.
Background technology
Common PE pipe fitting injection machine, plastic grain plastifies by single Screw Extrusion feeding device of plasticizing use, then directly enters injection barrel through check valve.Because belong to plunger injection, melten gel can only be accepted the pressure of pushing of plunger in machine barrel, is subject to hardly the effect of shearing force; When melt flows in passage, owing to existing inner viscosity resistance and the frictional resistance of conduit wall, in its flow process, there will be obvious VELOCITY DISTRIBUTION to change, if channel cross-section shape and size change, also can cause pressure in melt, the variation of velocity flow profile and volume flow rate, the thermal uniformity of plastics is poor, and plasticizing homogeneity is poor.These, all can bring harmful effect to the aspect such as production efficiency and forming technology of injection machine above.
In the patent that is CN202318730U in the patent No., improve for this problem.Then when this patent enters actual use after improvement, there is new problem.Melt in the time entering sleeve, because the charging of sleeve goes out to be only provided with 7 apertures, the suffered plunger of melt to push pressure certain, flow velocity the tube wall slow and pipeline that joins with sleeve is stressed larger.
Utility model content
Because prior art exists the problems referred to above, the utility model proposes a kind of sleeve of injection machine, it can effectively solve the problems referred to above of prior art.
The utility model addresses the above problem by the following technical programs:
A kind of sleeve of injection machine, comprise cylindrical shell and the feeder of being located at described barrel front end, the centre of described feeder is provided with the first charging hole and is symmetrically distributed in multiple second charging holes of described the first charging hole surrounding, and the diameter of described the first charging hole is greater than the diameter of described the second charging hole.
The diameter of the cross section of described cylindrical shell evenly increases, and the diameter of described barrel front end is less than the diameter of the rear end of described cylindrical shell.
Because the utility model has adopted above-mentioned technological means, the sleeve of injection machine of the present utility model had in use both ensured that melt can be subject to the effect of shearing force, increase the soffening of melt, pressure in again can improving uniformity of melt, guarantees that the suffered pressure of tube wall of the pipeline joining with sleeve is safe pressure.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with detailed description of the invention, describe the utility model in detail.
Shown in Figure 1, be the structural representation of an embodiment of the sleeve of injection machine of the present utility model.
In the present embodiment, the sleeve of injection machine comprises cylindrical shell 1 and is located at the feeder 2 of described barrel front end, the centre of described feeder 2 is provided with the first charging hole 21 and is symmetrically distributed in multiple second charging holes 22 of described the first charging hole 21 surroundings, in the present embodiment, the second charging hole 22 is provided with 6 along center line symmetry, can guarantee the equilibrium of pressure.The diameter of described the first charging hole 21 is greater than the diameter of described the second charging hole 22, in the first charging hole, can pass through more melt, prevents that the tube wall of the pipeline that melt pair and sleeve join from producing excessive pressure.
The diameter of the cross section of described cylindrical shell 1 evenly increases, and the diameter of described barrel front end is less than the diameter of the rear end of described cylindrical shell.Cylindrical shell entirety presents the trend of one outer, makes melt outwards circulation gradually, is unlikely to pressure to be all gathered in feeder, can continuously merge again melt out in each charging hole.
Should be understood that these embodiments are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (2)
1. the sleeve of an injection machine, it is characterized in that: comprise cylindrical shell and the feeder of being located at described barrel front end, the centre of described feeder is provided with the first charging hole and is symmetrically distributed in multiple second charging holes of described the first charging hole surrounding, and the diameter of described the first charging hole is greater than the diameter of described the second charging hole.
2. the sleeve of injection machine according to claim 1, is characterized in that: the diameter of the cross section of described cylindrical shell evenly increases, and the diameter of described barrel front end is less than the diameter of the rear end of described cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044826.3U CN203680759U (en) | 2014-01-24 | 2014-01-24 | Sleeve of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044826.3U CN203680759U (en) | 2014-01-24 | 2014-01-24 | Sleeve of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203680759U true CN203680759U (en) | 2014-07-02 |
Family
ID=51002716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044826.3U Expired - Fee Related CN203680759U (en) | 2014-01-24 | 2014-01-24 | Sleeve of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203680759U (en) |
-
2014
- 2014-01-24 CN CN201420044826.3U patent/CN203680759U/en not_active Expired - Fee Related
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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: 20140702 Termination date: 20180124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |