CN200974328Y - Air-blowing casting needle - Google Patents
Air-blowing casting needle Download PDFInfo
- Publication number
- CN200974328Y CN200974328Y CN 200620016106 CN200620016106U CN200974328Y CN 200974328 Y CN200974328 Y CN 200974328Y CN 200620016106 CN200620016106 CN 200620016106 CN 200620016106 U CN200620016106 U CN 200620016106U CN 200974328 Y CN200974328 Y CN 200974328Y
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- CN
- China
- Prior art keywords
- sleeve
- mould pin
- wall
- cooling
- inner plunger
- 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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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The device is an inflatable module needle, which includes, from the outside to the inside, an external sleeve (1), an inner plunger (5), as well as a mould needle (2). The interlayer space between the inner hole wall of the plunger (5) and the outer of the mould needle (2) is taken as a passage of high-pressure gas. The top and the bottom of the inner plunger (5) match to the upper end and the low end water seal at the top and bottom end of the sleeve (1) respectively. The interlayer between the outer wall of the plunger (5) and the inner wall of the sleeve (1) is provided with a cooling water passage. The water inlet hole (11) of the cooling water passage and a water inlet (12) are arranged at the inner wall of the sleeve. The surface temperature of the mould needle can be greatly reduced, which can continue to blow molding for a long time to prevent glue from adhering on sleeve surface, after the utility model is used so as to improve the working efficiency and quality of the blow molding, and can produce bent and hollow plastic products.
Description
Technical field
The utility model relates to the mould accessory that adopts in a kind of plastic shaping, relates in particular to a kind of air blowing mould pin of blow molding hollow plastic articles.
Background technology
In the prior art, air blowing mould pin is a kind of mould accessory that is used for the blow molding hollow plastic articles, its structure generally includes an outside sleeve and is socketed in the interior mould pin that overlaps tube length of this sleeve axis hole, leave the space that can supply gases at high pressure to pass through between this mould pin and the sleeve hole wall, the mould pin has a resetting means that makes progress, and the bottom plug of a sealing sleeve bottom opening is arranged at its bottom.During blowing, gases at high pressure press down the mould pin and blow out from the space between mould pin and the sleeve hole wall, and mould pin bottom contacts with the plastics liquation of high temperature, just can form hollow plastic products under the effect of gases at high pressure.But the time of the continuous blowing of air blowing mould pin of this structure can not be oversize, therefore can only be blow molded into the hollow plastic articles of straight tube-like, and the plastic products of blowing bending, as as the plastic rubber winding pipe of handle of umbrella the time, need the long blowing time, but because the temperature of plastics liquation is very high, the time has been grown the temperature of later air blowing mould pin will be too high, glue is bonded at outside the sleeve, has had a strong impact on the effect of blowing.
The utility model content
But the technical problems to be solved in the utility model is to provide a kind of air blowing mould pin of long-time continuous blowing, but should the blowing of air blowing mould pin go out crooked hollow plastic articles thus.
The technical scheme in the invention for solving the above technical problem is, manufacture and design a kind of air blowing mould pin, the mould pin that comprises outer sleeve and run through tube chamber in the described sleeve, described mould pin is than described cover tube length, but its bottom is provided with the bottom plug of sealing sleeve bottom opening, and its top is provided with the resetting means that makes described mould pin keep the trend of moving; When described mould pin pressurized, described bottom plug moves down, the opening-like attitude in the bottom of described sleeve; Resetting means made to move on the mould pin and resets after pressure was cancelled, and the bottom of described sleeve is closed state; Comprise the inner plunger that is arranged between described sleeve lining and the mould pin outer wall in addition, mezzanine space between the inner hole wall of this inner plunger and the described mould pin outer wall is as the passage of gases at high pressure, the top of described inner plunger and bottom cooperate with the upper end and the bottom water-stop of described sleeve lining respectively, interlayer between the outer wall of described inner plunger and the described sleeve lining is provided with cooling-water duct, and the inlet opening of this cooling-water duct and apopore are arranged on the sidewall of described sleeve.Like this, the cooling water that flows just can in time be taken away the heat of sleeve surface, effectively reduces the temperature of air blowing mould pin.
The both sides of described inner plunger outer wall are respectively equipped with first vertical tangent plane and second vertical tangent plane, its bottom is provided with a circle groove, the part of described inner plunger outer wall except that first vertical tangent plane and second vertical tangent plane is the cambered surface that cooperates with described sleeve lining water-stop, thus the mezzanine space between described inner plunger outer wall and the sleeve lining is separated into first cooling-water duct and second cooling-water duct, cooling water enters first cooling-water duct from described inlet opening, enter second cooling-water duct through described groove again, flow out from described apopore at last.This flow direction of cooling water can reach preferable radiating effect.
Described mould pin top is provided with the external diameter enlarged footing big than the sleeve open top, and described resetting means is the compression spring that is arranged between this enlarged footing and the sleeve top.
Inlet opening on the described sleeve lateral wall and apopore place respectively have a recess, and the bottom of this recess is a plane, are convenient to water inlet pipe and are connected with paddle hole with outlet pipe.
Compare with prior art, air blowing mould pin of the present utility model is owing to externally be provided with cooling-water duct in the sleeve, therefore can reduce the temperature of sleeve surface greatly, prevent that the glue that melts is bonded at outside the sleeve, thereby prolonged the continuous blowing time of air blowing mould pin greatly, not only can guarantee blowing effect, improved production efficiency, can also be blow molded into crooked hollow plastic articles, for example with the plastic cement handle of umbrella of elbow, thereby can economize in raw materials and alleviate the weight of handle of umbrella.
Description of drawings
Fig. 1 is the schematic appearance of the utility model air blowing mould pin;
Fig. 2 is the profilograph of the utility model air blowing mould pin;
Fig. 3 is the A-A profile among Fig. 1;
Fig. 4 is the exploded view of the utility model air blowing mould pin.
The specific embodiment
Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.
Shown in Fig. 1,2 and 4, air blowing mould pin of the present utility model comprises from outside to inside successively: outer sleeve 1, inner plunger 5 and mould pin 2, described inner plunger 5 is lacked than sleeve 1 and is fixedly mounted in the axis hole 16 of sleeve 1, described mould pin 2 is grown than described sleeve 1 and is run through from the axis hole 55 of described inner plunger 5, but its bottom is provided with the bottom plug 21 of sealing sleeve 1 bottom opening, its top then is provided with and makes described mould pin 2 keep the resetting means 3 of the trend of moving, and the mezzanine space between the inner hole wall of mould pin 2 and inner plunger 5 is as the passage of gases at high pressure.When carrying out blowing, the top of described mould pin 2 is subjected to the downforce of gases at high pressure, and described bottom plug 21 moves down, and opening-like attitude is exposed in the bottom of described sleeve 1, and gases at high pressure are entered the glue of fusing and make it to form a hollow shape; And resetting means 3 makes to move on the mould pin 2 and resets after the pressure of gases at high pressure is cancelled, and the bottom of described sleeve 1 is sealed by bottom plug 21, and glue can not enter in the air blowing mould pin.
As Fig. 2, the vertical section of described mould pin 2 bottom plugs 21 is and suitable trapezoidal of described inner plunger 5 bottom shape of hole wall, can bring better sealing effect and blowing effect thus.
As shown in Figure 4, described mould pin 2 tops are provided with the external diameter short cylinder enlarged footing 22 big than sleeve 1 open top, and described resetting means 3 is for being arranged on compression spring between this enlarged footing 22 and sleeve 1 top or other elastomeric elements of similar effect.
As shown in Figures 2 and 3, special feature of the present utility model is, interlayer between described inner plunger 5 and described sleeve 1 inwall is provided with cooling-water duct 6, for this reason, as shown in Figure 4, the top of described inner plunger 5 and bottom are short cylinder and cooperate with the upper end and the bottom water-stop of described sleeve 1 circular inner wall respectively, the both sides of inner plunger 5 outer walls are respectively equipped with first vertical tangent plane 51 and second vertical tangent plane 52, its bottom is provided with a circle groove 53, the part of described inner plunger 5 outer walls except that first vertical tangent plane 51 and second vertical tangent plane 52 is the cambered surface 54 that cooperates with described sleeve 1 inwall water-stop, thus the mezzanine space between described inner plunger 5 outer walls and sleeve 1 inwall is separated into first cooling-water duct 61 and second cooling-water duct 62.Correspondingly, described sleeve 1 outer wall top has inlet opening 11 and the apopore 12 that is communicated with first cooling-water duct 61 and second cooling-water duct 62 respectively.Cooling water enters first cooling-water duct 61 from described inlet opening 11, enters second cooling-water duct 62 through described groove 53 again, flows out from described apopore 12 at last, thereby can effectively the heat of sleeve 1 be taken away.
Connect water inlet pipe and outlet pipe for convenience, inlet opening 11 and apopore 12 places on described sleeve 1 sidewall respectively have a recess 13, and the bottom of this recess 13 is a plane.
Claims (5)
1, a kind of air blowing mould pin, the mould pin (2) that comprises outer sleeve (1) and run through the interior tube chamber of described sleeve (1), described mould pin (2) is longer than described sleeve (1), but its bottom is provided with the bottom plug (21) of sealing sleeve (1) bottom opening, and its top is provided with the resetting means (3) that makes the trend of moving in described mould pin (2) maintenance; When described mould pin (2) pressurized, described bottom plug (21) moves down, the opening-like attitude in bottom of described sleeve (1); Resetting means (3) made to move on the mould pin (2) and resets after pressure was cancelled, and the bottom of described sleeve (1) is closed state; It is characterized in that:
Also comprise the inner plunger (5) that is arranged between described sleeve (1) inwall and mould pin (2) outer wall, mezzanine space between inner hole wall of this inner plunger (5) and described mould pin (2) outer wall is as the passage of gases at high pressure, the top of described inner plunger (5) and bottom cooperate with the upper end and the bottom water-stop of described sleeve (1) inwall respectively, interlayer between the outer wall of described inner plunger (5) and described sleeve (1) inwall is provided with cooling-water duct (6), and inlet opening (11) of this cooling-water duct (6) and apopore (12) are arranged on the sidewall of described sleeve (1).
2, air blowing mould pin according to claim 1, it is characterized in that: the both sides of described inner plunger (5) outer wall are respectively equipped with first vertical tangent plane (51) and second vertical tangent plane (52), its bottom is provided with a circle groove (53), the part of described inner plunger (5) outer wall except that first vertical tangent plane (51) and second vertical tangent plane (52) is the cambered surface (54) that cooperates with described sleeve (1) inwall water-stop, thus the mezzanine space between described inner plunger (5) outer wall and sleeve (1) inwall is separated into first cooling-water duct (61) and second cooling-water duct (62), cooling water enters first cooling-water duct (61) from described inlet opening (11), enter second cooling-water duct (62) through described groove (53) again, flow out from described apopore (12) at last.
3, air blowing mould pin according to claim 1 and 2, it is characterized in that: described mould pin (2) top is provided with the external diameter enlarged footing (22) big than sleeve (1) open top, and described resetting means (3) is for being arranged on the compression spring between this enlarged footing (22) and sleeve (1) top.
4, air blowing mould pin according to claim 1 and 2 is characterized in that: inlet opening (11) and apopore (12) on described sleeve (1) sidewall locate respectively to have a recess (13), and the bottom of this recess (13) is a plane.
5, air blowing mould pin according to claim 1 and 2 is characterized in that: the vertical section of described mould pin (2) bottom plug (21) is and suitable trapezoidal of described inner plunger (5) bottom shape of hole wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016106 CN200974328Y (en) | 2006-11-27 | 2006-11-27 | Air-blowing casting needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016106 CN200974328Y (en) | 2006-11-27 | 2006-11-27 | Air-blowing casting needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200974328Y true CN200974328Y (en) | 2007-11-14 |
Family
ID=38900620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620016106 Expired - Fee Related CN200974328Y (en) | 2006-11-27 | 2006-11-27 | Air-blowing casting needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200974328Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696329A (en) * | 2019-10-17 | 2020-01-17 | 焦二辉 | Blowing mandrel mechanism and hollow blow molding machine |
-
2006
- 2006-11-27 CN CN 200620016106 patent/CN200974328Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696329A (en) * | 2019-10-17 | 2020-01-17 | 焦二辉 | Blowing mandrel mechanism and hollow blow molding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20101127 |