CN204687287U - Pressurizer - Google Patents
Pressurizer Download PDFInfo
- Publication number
- CN204687287U CN204687287U CN201520427610.XU CN201520427610U CN204687287U CN 204687287 U CN204687287 U CN 204687287U CN 201520427610 U CN201520427610 U CN 201520427610U CN 204687287 U CN204687287 U CN 204687287U
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- CN
- China
- Prior art keywords
- sprue
- pressurize
- barrel
- communicated
- push rod
- 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)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to injection-moulding device technical field, be specifically a kind of for medium-and-large-sized plastic-injection moulding machine without defective material be detained independent pressure maintaining device, comprise body (9) after the barrel precursor (3) being provided with the first sprue and the barrel being provided with the second sprue, described first sprue is communicated with by non-return valve with the second sprue, and described barrel precursor (3) is provided with the nozzle (1) be communicated with first sprue one end, the screw rod chamber be communicated with the second sprue is provided with in body (9) after described barrel, screw rod (8) is provided with in described screw rod chamber, it is characterized in that: it also comprises the pressurize chamber being arranged on barrel precursor (3) and being above communicated with the first sprue, be arranged on pressurize push rod (2) in pressurize chamber and for providing the power set (4) of power to pressurize push rod (2).This pressurizer pressurize action synchronously can carry out with plasticizing action, reduces the formed product cycle.
Description
Technical field
The utility model relates to injection-moulding device technical field, be specifically a kind of for medium-and-large-sized plastic-injection moulding machine without defective material be detained independent pressure maintaining device.
Background technology
Medium-and-large-sized plastic-injection moulding machine injection volume is generally more than 2000 grams, and the product weight of production is more than 1000 grams, and product die joint area is comparatively large, and wall thickness is more than 2mm.There is contraction in various degree to prevent product after die sinking in this series products, usually needs the longer time to carry out pressurize action, and it is long to add raw material fusion time, and cause formed product long for cycle time, production efficiency is low.
For this series products, equipment manufacturers generally adopt the method shortening raw material fusion time to enhance productivity, as improved screw speed, increasing screw diameter etc.Improve screw speed and usually adopt small displacement hydraulic motor, reduce the discharge capacity of plastifying liquid pressure motor to improve hydraulic motor rotary speed, promote plasticizing capacity.But after hydraulic motor displacement reduces, motor torsional moment reduces, tough raw material plasticizing requirement cannot be met.Under the prerequisite not reducing motor displacement, improve screw speed, just must improve the overall flow of hydraulic system, which not only improves equipment cost, also relate to the entirety variation of hydraulic system pipeline latus rectum, change workload very large.Increase screw diameter effectively can improve the plasticizing weight in the unit interval, reduce fusion time, but can injection pressure be reduced, the negotiability of molten plastic in the nozzle unit interval is declined, reduce injection speed, be difficult to meet the long Shooting Technique requirement than large product of stream.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of pressurize action and plasticizing action synchronously to carry out, reduce the pressurizer in formed product cycle.
The technical scheme that the utility model adopts is: a kind of pressurizer, comprise body after the barrel precursor being provided with the first sprue and the barrel being provided with the second sprue, described first sprue is communicated with by non-return valve with the second sprue, and described barrel precursor is provided with the nozzle be communicated with first sprue one end, the screw rod chamber be communicated with the second sprue is provided with in body after described barrel, screw rod is provided with in described screw rod chamber, it also comprises the pressurize chamber being arranged on and barrel precursor is communicated with the first sprue, be arranged on pressurize push rod in pressurize chamber and for providing the power set of power to pressurize push rod.
The diameter of described pressurize push rod is less than the diameter of the first sprue.
Described pressurize push rod is provided with annular seal groove near first sprue one end.
Described pressurize push rod is provided with radiating groove away from first sprue one end.
Described non-return valve comprises the ball retainer being provided with centre bore and the steel ball be arranged in ball retainer centre bore, described centre bore is shoulder hole, the diameter of described centre bore one end coordinates with steel ball size, ensure steel ball energy Free-rolling, the diameter of the described centre bore other end is less than steel ball size, makes steel ball be unlikely to rush in the first sprue.
Also be provided with flange between body after described non-return valve and barrel, described flange is provided with the through hole for being communicated with the first sprue and the second sprue near non-return valve side, and the diameter of described through hole is less than the diameter of steel ball.
Operation principle of the present utility model is: during injection, screw rod moves forward, promote molten plastic and steel ball is pressed in ball retainer front end, molten plastic enters in the first sprue of barrel precursor by the centre bore of ball retainer, molten plastic sub-fraction promotes pressurize push rod and retreats, enter pressurize chamber, most raw material enters mould by nozzle injection.After injection terminates, screw rod stops moving forward, pressurize oil cylinder pushing pressurize push rod advances, molten plastic in pressurize chamber is pressed into the first sprue, and steel ball is melted plastics and promotes backward to be pressed on the through hole of flange, disconnects the first sprue and the second sprue, molten plastic cannot enter the second sprue, and then screw rod chamber cannot be entered, under the compressing of pressurize push rod, enter mould from nozzle, complete pressurize action.After steel ball cuts off the first sprue and the second sprue, screw rod starts rotated back, carries out plasticizing action.
Adopt above structure compared with prior art, the utility model has the following advantages: adopt this structure, can carry out pressurize action, be equivalent to deduct the dwell time in molding cycle, effectively reduce molding cycle time while plasticizing; Only provide the pressure required for pressurize action, oil cylinder active area is little, dwell pressure precise control; The diameter of pressurize push rod is less than the diameter of the first sprue, and such pressurize push rod front end can be goed deep in the first sprue, and the molten plastic in pressurize chamber is all emptying, prevents molten plastic from accumulating in for a long time in pressurize chamber and causes decomposition, is convenient to expect clearly; Pressurize push rod is provided with annular seal groove, effectively can prevents the seepage of molten plastic; Pressurize push rod arranges radiating groove, effectively can reduce the piston rod transmission of heat to pressurize oil cylinder.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model pressurizer.
As shown in the figure: 1, nozzle; 2, pressurize push rod; 3, barrel precursor; 4, power set; 5, ball retainer; 6, steel ball; 7, flange; 8, screw rod; 9, body after barrel.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described further, but the utility model is not limited only to following detailed description of the invention.
As shown in the figure: a kind of pressurizer, comprise body 9 after the barrel precursor 3 being provided with the first sprue and the barrel being provided with the second sprue, described first sprue is communicated with by non-return valve with the second sprue, and described barrel precursor 3 is provided with the nozzle 1 be communicated with first sprue one end, the screw rod chamber be communicated with the second sprue is provided with in body 9 after described barrel, screw rod 8 is provided with in described screw rod chamber, it also comprises the pressurize chamber being arranged on and barrel precursor 3 is communicated with the first sprue, be arranged on pressurize push rod 2 in pressurize chamber and for providing the power set 4 of power to pressurize push rod 2.In 25-90 degree between described pressurize chamber and the first sprue.
The diameter of described pressurize push rod 2 is less than the diameter of the first sprue.
Described pressurize push rod 2 is provided with annular seal groove near first sprue one end.
Described pressurize push rod 2 is provided with radiating groove away from first sprue one end.
Described non-return valve comprises the ball retainer 5 being provided with centre bore and the steel ball 6 be arranged in ball retainer 5 centre bore, described centre bore is shoulder hole, the diameter of described centre bore one end and steel ball 6 diametric fit, ensure steel ball energy Free-rolling, the diameter of the described centre bore other end is less than steel ball 6 diameter, makes steel ball be unlikely to rush in the first sprue.
Also be provided with flange 7 between body 9 after described non-return valve and barrel, described flange 7 is provided with the through hole for being communicated with the first sprue and the second sprue near non-return valve side, and the diameter of described through hole is less than the diameter of steel ball 6.Described flange 7 is actually and connects body after barrel precursor 3 and barrel.
Described power set 4 are pressurize oil cylinder, and described pressurize oil cylinder is arranged on barrel precursor 3, and are also provided with thermal insulation board between described pressurize oil cylinder and barrel precursor 3.
Barrel precursor 3 processes pressurize chamber, this cylindrical pressurize chamber and the first sprue angled.Pressurize push rod 2 is under the piston rod of pressurize oil cylinder drives, and move around in pressurize chamber, pressurize push rod 2 front end, with closure gasket groove, prevents molten plastic seepage.During injection, molten plastic enters barrel precursor 3 first sprue by non-return valve, and promote pressurize push rod 2 and retreat, molten plastic is filled and entered pressurize chamber, enters mould through nozzle 1 injection simultaneously.After injection terminates, pressurize oil cylinder pushing pressurize push rod 2 advances, and by molten plastic press-in barrel precursor 3 first sprue in pressurize chamber, now non-return valve cuts out under the effect of molten plastic, makes plastic raw materials cannot enter the second sprue, prevents from flowing backwards; Raw material in barrel precursor 3 first sprue is pressed into mould, completes pressurize action.Meanwhile, screw rod carries out plasticizing action under the driving of hydraulic motor.
Claims (7)
1. a pressurizer, comprise body (9) after the barrel precursor (3) being provided with the first sprue and the barrel being provided with the second sprue, described first sprue is communicated with by non-return valve with the second sprue, and described barrel precursor (3) is provided with the nozzle (1) be communicated with first sprue one end, the screw rod chamber be communicated with the second sprue is provided with in body (9) after described barrel, screw rod (8) is provided with in described screw rod chamber, it is characterized in that: it also comprises the pressurize chamber being arranged on barrel precursor (3) and being above communicated with the first sprue, be arranged on pressurize push rod (2) in pressurize chamber and for providing the power set (4) of power to pressurize push rod (2).
2. pressurizer according to claim 1, is characterized in that: the diameter of described pressurize push rod (2) is less than the diameter of the first sprue.
3. pressurizer according to claim 1, is characterized in that: described pressurize push rod (2) is provided with annular seal groove near first sprue one end.
4. pressurizer according to claim 1, is characterized in that: described pressurize push rod (2) is provided with radiating groove away from first sprue one end.
5. pressurizer according to claim 1, it is characterized in that: described non-return valve comprises the ball retainer (5) being provided with centre bore and the steel ball (6) be arranged in ball retainer (5) centre bore, described centre bore is shoulder hole, the diameter of described centre bore one end and steel ball (6) diametric fit, ensure steel ball energy Free-rolling, the diameter of the described centre bore other end is less than steel ball (6) diameter, makes steel ball be unlikely to rush in the first sprue.
6. pressurizer according to claim 5, it is characterized in that: after described non-return valve and barrel, between body (9), be also provided with flange (7), described flange (7) is provided with the through hole for being communicated with the first sprue and the second sprue near non-return valve side, and the diameter of described through hole is less than the diameter of steel ball (6).
7. pressurizer according to claim 1, is characterized in that: described power set (4) are pressurize oil cylinder, and described pressurize oil cylinder is arranged on barrel precursor (3), and are also provided with thermal insulation board between described pressurize oil cylinder and barrel precursor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520427610.XU CN204687287U (en) | 2015-06-19 | 2015-06-19 | Pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520427610.XU CN204687287U (en) | 2015-06-19 | 2015-06-19 | Pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204687287U true CN204687287U (en) | 2015-10-07 |
Family
ID=54227621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520427610.XU Expired - Fee Related CN204687287U (en) | 2015-06-19 | 2015-06-19 | Pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204687287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092315A (en) * | 2020-08-07 | 2020-12-18 | 昌盛达机械(浙江)有限公司 | Independent pressure maintaining device of plastic injection molding machine |
| WO2023163208A1 (en) * | 2022-02-28 | 2023-08-31 | 日精エー・エス・ビー機械株式会社 | Dwelling device, injection device, and injection method for resin material |
-
2015
- 2015-06-19 CN CN201520427610.XU patent/CN204687287U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092315A (en) * | 2020-08-07 | 2020-12-18 | 昌盛达机械(浙江)有限公司 | Independent pressure maintaining device of plastic injection molding machine |
| WO2023163208A1 (en) * | 2022-02-28 | 2023-08-31 | 日精エー・エス・ビー機械株式会社 | Dwelling device, injection device, and injection method for resin material |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170619 |