CN104972626A - Check valve for spiral injection molding machine - Google Patents
Check valve for spiral injection molding machine Download PDFInfo
- Publication number
- CN104972626A CN104972626A CN201510291882.6A CN201510291882A CN104972626A CN 104972626 A CN104972626 A CN 104972626A CN 201510291882 A CN201510291882 A CN 201510291882A CN 104972626 A CN104972626 A CN 104972626A
- Authority
- CN
- China
- Prior art keywords
- inwall
- check valve
- valve body
- fluid hole
- disk spring
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/581—Devices for influencing the material flow, e.g. "torpedo constructions" or mixing devices
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a check valve for a spiral injection molding machine. The check valve comprises a columnar valve body (4) with a central hole (2) and is characterized in that an annular liquid outlet hole (6) penetrating in the axial direction of the valve body (4) is arranged on the valve body (4); a connecting arm (8) and a disc-shaped spring (10) are arranged in the liquid outlet hole (6), the connecting arm (8) is used for enabling the two segments of the liquid outlet hole (6) to be separated, and the inner wall portions of the connecting arm (8) are connected together; and the end of the disc-shaped spring (10) is fixed to the side wall of the liquid outlet hole (6), and after the disc-shaped spring (10) is partly or completely compressed, the liquid outlet hole (6) is made to be in the radial direction. Problems in the prior art are solved, and the check valve is simple in structure and has the good check effect.
Description
Technical field
The present invention relates to a kind of Check valve of screw injection machine.
Background technology
Injection machine has another name called injection (mo(u)lding) machine or injector, and a lot of factory is hydraulic cutting presser (pi ji), and injecting products is beer part.It utilizes mould for plastics to make the main former of the plastic products of various shape thermoplastic or thermosetting material.Injection machine, according to the arrangement mode of injection device and clamping apparatus, can be divided into vertical, horizontal and vertical sleeping combined type.
Injection machine conventional in prior art is spiral injection machine, its principle is when screw rod rotates in barrel, plastic grain in barrel is involved in the screw channel of screw rod, and progressively by its compacting, exhaust, plasticizing, and constantly push barrel front end to by having plastified plastic melt, accumulate between barrel top and nozzle, screw rod itself is subject to the pressure of melt and slowly pusher.When the melt deposited reaches the variable of setting, screw rod just stops operating, and travels forward under the driving of injection cylinder, and the melt plastified is injected mould.After injection and pressurize terminate, screw rod starts again rotate and retreat, and realizes next circulation plasticizing work.
Under normal circumstances, need to arrange only antiflowback valve in one end of screw rod, only antiflowback valve complex structure of the prior art, and fluid stopping effect is poor.
Summary of the invention
It is simple that the technical problem to be solved in the present invention is to provide a kind of structure, and the good injection machine of fluid stopping effect is with stopping antiflowback valve.。
For solving the problem, the invention provides a kind of Check valve of screw injection machine, comprising the cylindrical valve body being provided with centre bore, it is characterized in that, described valve body is also provided with along its axially through annular fluid hole, is provided with in described fluid hole:
-linking arm for the inner wall section of its two-phase seperation is linked together;
The disk spring of-end winding support on described fluid hole sidewall, described disk spring, can by the radial direction of described fluid hole only after being partially or completely compression.
As a further improvement on the present invention, described fluid hole is made up of the first inwall of circle and the second inwall, the internal diameter of described first inwall is greater than the internal diameter of described second inwall, the end wall of described disk spring is fixed on described first inwall, described first inwall is also fixed with one and is provided with the first catch that aperture is greater than described second inwall, can be resisted against after described disk spring is compressed on described first catch.
As a further improvement on the present invention, described valve body is also provided with some sealing rings.
Beneficial effect of the present invention is, the invention solves the problems of the prior art, and structure is simple, has good backflow effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein: 2-centre bore; 4-valve body; 6-fluid hole; 8-linking arm; 10-disk spring; 12-first catch; 14-sealing ring.
Detailed description of the invention
Below the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the present invention includes the cylindrical valve body 4 being provided with centre bore 2, it is characterized in that, described valve body 4 is also provided with along its axially through annular fluid hole 6, is provided with in described fluid hole 6:
-linking arm 8 for the inner wall section of its two-phase seperation is linked together;
The disk spring 10 of-end winding support on described fluid hole 6 sidewall, described disk spring 10, can by the radial direction of described fluid hole 6 only after being partially or completely compression.
As a further improvement on the present invention, described fluid hole 6 is made up of the first inwall of circle and the second inwall, the internal diameter of described first inwall is greater than the internal diameter of described second inwall, the end wall of described disk spring 10 is fixed on described first inwall, described first inwall is also fixed with one and is provided with the first catch 12 that aperture is greater than described second inwall, can be resisted against after described disk spring 10 is compressed on described first catch 12.
As a further improvement on the present invention, described valve body 4 is also provided with some sealing rings 14.
Concrete principle of the present invention is as follows:
(1) as shown in Figure 1, when normally working, disk spring 10 is in relaxed state, and liquid enters the opposite side of valve body 4 from the side of valve body 4 by the spacing between the second inwall of disk spring 10 and inlet opening.
(2) after liquid enters the opposite side of valve body 4, cannot reflux, because, after fluid pressure here raises, meeting reverse extrusion disk spring 10, makes it be fitted on the first catch 12 gradually, now disk spring 10 is propped up, liquid cannot pass through this fluid hole 6, prevents liquid from flowing backwards, serves good sealing function.
Above embodiment is only the present invention's a kind of embodiment wherein, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (3)
1. the Check valve of a screw injection machine, comprise the cylindrical valve body (4) being provided with centre bore (2), it is characterized in that, described valve body (4) is also provided with along its axially through annular fluid hole (6), described fluid hole is provided with in (6):
-linking arm (8) for the inner wall section of its two-phase seperation is linked together;
The disk spring (10) of-end winding support on described fluid hole (6) sidewall, described disk spring (10), can by the radial direction of described fluid hole (6) only after being partially or completely compression.
2. the Check valve of a kind of screw injection machine according to claim 1, it is characterized in that, described fluid hole (6) is made up of the first inwall of circle and the second inwall, the internal diameter of described first inwall is greater than the internal diameter of described second inwall, the end wall of described disk spring (10) is fixed on described first inwall, described first inwall is also fixed with one and is provided with the first catch (12) that aperture is greater than described second inwall, can be resisted against after described disk spring (10) is compressed on described first catch (12).
3. the Check valve of a kind of screw injection machine according to claim 1, is characterized in that, described valve body (4) is also provided with some sealing rings (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291882.6A CN104972626A (en) | 2015-06-01 | 2015-06-01 | Check valve for spiral injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291882.6A CN104972626A (en) | 2015-06-01 | 2015-06-01 | Check valve for spiral injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104972626A true CN104972626A (en) | 2015-10-14 |
Family
ID=54269844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510291882.6A Pending CN104972626A (en) | 2015-06-01 | 2015-06-01 | Check valve for spiral injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104972626A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2770933Y (en) * | 2005-03-21 | 2006-04-12 | 北京中拓机械有限责任公司 | Special injection nozzle for gas auxiliary injection moulding |
| CN202293209U (en) * | 2011-10-08 | 2012-07-04 | 先锐模具配件(东莞)有限公司 | Automatic glue seal device for valve needle |
-
2015
- 2015-06-01 CN CN201510291882.6A patent/CN104972626A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2770933Y (en) * | 2005-03-21 | 2006-04-12 | 北京中拓机械有限责任公司 | Special injection nozzle for gas auxiliary injection moulding |
| CN202293209U (en) * | 2011-10-08 | 2012-07-04 | 先锐模具配件(东莞)有限公司 | Automatic glue seal device for valve needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |