CN201272000Y - Independent pressure maintaining mechanism of injection moulding machine - Google Patents
Independent pressure maintaining mechanism of injection moulding machine Download PDFInfo
- Publication number
- CN201272000Y CN201272000Y CNU2008201221891U CN200820122189U CN201272000Y CN 201272000 Y CN201272000 Y CN 201272000Y CN U2008201221891 U CNU2008201221891 U CN U2008201221891U CN 200820122189 U CN200820122189 U CN 200820122189U CN 201272000 Y CN201272000 Y CN 201272000Y
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- CN
- China
- Prior art keywords
- pressurize
- gate valve
- oil cylinder
- pressure maintaining
- injection
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Abstract
The utility model discloses an independent pressure maintaining mechanism of an injection machine, which comprises a nozzle (1), a front machine barrel (2), and a pressure maintaining device (13); the back part of the front machine barrel (2) is connected with a material barrel (6); a screw (7) consistent with the axis of an injection channel is arranged in the material barrel (6); a pressure maintaining channel is arranged in the pressure maintaining device (13); a pressure maintaining plunger piston (4) which is sealed and matched with the inner wall of the channel in a sliding way and a pressure maintaining oil cylinder (5) capable of leading the pressure maintaining plunger piston (4) to move are arranged in the pressure maintaining channel; the utility model is characterized in that the front machine barrel (2) is also connected with a gate valve device (14); the gate valve device (14) is provided with a gate valve core (3) and a gate valve oil cylinder (8) capable of leading the gate valve core (3) to move; the gate valve device (14) is arranged between the pressure maintaining device (13) and the material barrel (6); the gate valve core (3) and the gate valve oil cylinder (8) capable of leading the gate valve core (3) to move are arranged in the gate valve device (14); and the pressure maintaining plunger piston (4) and the pressure maintaining oil cylinder (5) are mutually independent. The injection machine with the pressure maintaining mechanism is suitable for the parts with large injection amount, and thick walls, and has a short production period and high production efficiency.
Description
Technical field
The utility model relates to a kind of injection machine, specifically be a kind of independent pressure-keeping mechanism of injection machine.
Background technology
Injection machine is a kind of plastic molding machinery of special use, and it utilizes the thermoplasticity of plastics, and after heat fused, in addition pressure makes it flow into die cavity fast again, through pressurize and the cooling of a period of time, becomes the plastic products of different shape.The typical workflow of existing common injection machine is: matched moulds--penetrates the platform reach and puts-preformed that------die sinking--ejects--preformed for pressurize and cooling in injection in place.
Injection machine must switch to pressurize after injection stage is finished, to replenish the contraction that cooling forms, last till till the gate freeze always.Traditional injection machine pressurizer and pre-molding apparatus are one, normally finish plasticizing again after injection, pressurize, the cooling by screw rod, and dust cycle is very long, and production efficiency is very low.Along with the development of producing and the innovation of technology, a kind of injection machine has appearred in the market, it has independently pressure-keeping mechanism, and disclosing a mandate publication number as China national Department of Intellectual Property is the utility model patent of CN201023294 " the independent pressure-keeping mechanism of injection machine ".Its technical scheme is: comprise machine barrel, front barrel, nozzle, needle-valve, pressurize oil cylinder, plunger, described front barrel has sprue and side runner, between two runners interface channel is arranged, sprue and side runner junction form a chamber, and the chamber is by sealed nozzle, needle-valve is set in the chamber, seal primary flow passage when needle-valve one end contacts with the sprue outlet, and cover upper spring, spring one end is spacing by needle-valve, the baffle ring of other end connecting band through hole, baffle ring is spacing by nozzle; Described front barrel is connected with machine barrel, and feed worm places machine barrel; Described pressurize oil cylinder is connected under the side runner of front barrel, and its plunger places side runner.It mainly is to close runner and carry out pressurize by needle-valve, and this structure also can satisfy pressurize and storing two actions are carried out simultaneously, can utilize the time of independent pressurize to carry out storing, also is fit to general injection volume, general heavy wall product.But in the production in enormous quantities of reality, such as, the production of the preform mould that 32 chambeies and 32 chambeies are above, because the chamber number is many, it requires injection volume big, and the storing amount is also big, again because the bottle embryo belongs to the wall thickness part, pressurize and cool time are all long, so abovely thisly close runner and the injection machine that carries out pressurize by needle-valve, pressure-keeping mechanism can't satisfy the demand of actual production.
The piston rod of its pressurize plunger and pressurize oil cylinder is connected one in addition, when the pressurize oil cylinder is return, can make the pressurize plunger together along with the motion of pressurize oil cylinder, the easy like this appearance cavity, idiosome surface that makes in the die cavity.
The content of utility model
The technical problems to be solved in the utility model is, overcomes above existing technological deficiency, and a kind of independent pressure-keeping mechanism of injection machine is provided, and is fit to that injection volume is big, the part of wall thickness, and with short production cycle, production efficiency is high.
Technical scheme to be solved in the utility model is, a kind of independent pressure-keeping mechanism with injection machine of following structure is provided: it comprises nozzle, front barrel, pressurizer, the rear portion of described front barrel is connected with barrel, be provided with a screw rod consistent in the described barrel with the injection canal axis, be provided with a pressurize passage in the pressurizer, be provided with a pressurize plunger and the pressurize oil cylinder that can make the pressurize plunger motion of joining in the described pressurize passage with the vias inner walls sealed sliding.
Also connect a gate-valve device on the described front barrel, described gate-valve device is located between pressurizer and the barrel, establishes a gate valve core and the gate valve oil cylinder that can make the motion of gate valve core in the described gate-valve device, and described pressurize plunger is independent mutually with the pressurize oil cylinder.Described gate valve in-core have one with the passage of its axis normal, this passage and injection canal axial alignment can be injected; Can close injection canal with the injection canal dislocation.
Described pressurize plunger independently is meant mutually that with the pressurize oil cylinder the in-oil cylinder piston rod of pressurize separates with the pressurize plunger, when the pressurize oil cylinder is return, the pressurize plunger is return with the pressurize oil cylinder, thereby delayed the time of pressurize, the quality of idiosome in the die cavity is had good raising.
During injection, at first the PET material is prepared injection through barrel, spiro rod plasticizing; Gate valve oil cylinder control gate valve core is opened the injection canal in the front barrel then, and start injection, melt are full of front barrel and die cavity, and the pressurize plunger is freely retreated by injection pressure; After injection was finished, gate valve oil cylinder control gate valve core was closed injection canal in the front barrel, and the pressurize oil cylinder promotes the pressurize plunger and carries out pressurize, and the while screw rod feeds in raw material, preformed, prepares the melt of injection next time; At last, pressurize finishes, and the pressurize oil cylinder retreats with the pressurize plunger and separates, thereby finishes the sampling action of an injection, pressurize, preformed.
After adopting above structure, the utility model has the following advantages compared with prior art:
1, by improving pressurizer and gate-valve device, after injection is finished, gate-valve device is closed injection canal by the gate valve core, and the pressurize oil cylinder promotes the pressurize plunger and carries out independently pressurize action, and the screw rod of injection machine can carry out a large amount of storings and the preformed of long period separately simultaneously.The action of pressurize is controlled in this employing independently gate-valve device, is fit to that injection volume is big, the part of wall thickness, not only improves plasticizing quality but also improve plasticizing capacity thereby reach.
2, the in-oil cylinder piston rod of pressurize separates with the pressurize plunger, when the pressurize oil cylinder is return, the pressurize plunger is return with the pressurize oil cylinder, thereby delayed the time of pressurize, the cavity appears in the surface that prevents idiosome in the die cavity like this when the pressurize oil cylinder is return, and the quality of finished product is had good raising.
Description of drawings
Fig. 1 is a generalized section of the present utility model.
Fig. 2 is the A-A generalized section of the utility model in Fig. 1.
Fig. 3 is the side schematic view and the B-B generalized section of the utility model gate-valve device.
As shown in the figure: 1, nozzle, 2, front barrel, 3, the gate valve core, 4, the pressurize plunger, 5, the pressurize oil cylinder, 6, barrel, 7, screw rod, 8, the gate valve oil cylinder, 9, pad, 10, fixed block, 11, gate valve oil cylinder protecgulum, 12, the anti-rotation guide rod, 13, pressurizer, 14, gate-valve device.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As Fig. 1, Fig. 2, shown in Figure 3, it comprises nozzle 1, front barrel 2, pressurizer 13 the independent pressure-keeping mechanism of the utility model injection machine, the rear portion of described front barrel 2 is connected with barrel 6, be provided with a screw rod 7 consistent in the described barrel 6 with the injection canal axis, be provided with a pressurize passage in the pressurizer 13, be provided with a pressurize plunger 4 and the pressurize oil cylinder 5 that can make 4 motions of pressurize plunger of joining in the described pressurize passage with the vias inner walls sealed sliding.
Also connect a gate-valve device 14 on the described front barrel 2, described gate-valve device 14 is located between pressurizer 13 and the barrel 6, establish a gate valve core 3 and the gate valve oil cylinder 8 that can make 3 motions of gate valve core in the described gate-valve device 14, described pressurize plunger 4 is separate with pressurize oil cylinder 5.
Described pressurize plunger 4 independently is meant mutually with pressurize oil cylinder 5, piston rod and pressurize plunger 4 in the pressurize oil cylinder 5 are separated, and when the pressurize oil cylinder is return, the pressurize plunger are return with the pressurize oil cylinder, thereby delayed the time of pressurize, the quality of idiosome in the die cavity has been had good raising.
Have in the described gate valve core 3 one with the passage of its axis normal, this passage and injection canal axial alignment can be injected; Can close injection canal with the injection canal dislocation.The fixed block 10 on the top of described gate valve core 3 is provided with the anti-rotation guide rod 12 that prevents that gate valve core 3 from radially rotating, and prevents that the rotation of gate valve core from causing stopping up channel, has also played guide effect to gate valve core 3 is installed in addition.The position that gate-valve device 14 is connected with front barrel is provided with heat insulation pad 9, and gate valve oil cylinder protecgulum 11 is provided with cooling circuit, prevents that the temperature of gate valve oil cylinder 8 is too high, influences the operate as normal of gate-valve device 14.
During injection, at first the PET material is prepared injection through barrel 6, screw rod 7 plasticizings; The injection canal opened in the front barrel 2 of gate valve oil cylinder 8 control gate valve cores 3 then, start injection, melt are full of front barrel 2 and die cavity, and pressurize plunger 4 is freely retreated by injection pressure; After injection was finished, gate valve oil cylinder 8 control gate valve cores 3 were closed injection canals in the front barrel 2, and the piston rods in the pressurize oil cylinder 5 promote pressurize plungers 4 and carry out pressurize, simultaneously screw rod 7 feed in raw material, preformed, prepare the melt of injection next time; At last, pressurize finishes, and pressurize oil cylinder 5 retreats with pressurize plunger 4 and separates, thereby finishes the sampling action of an injection, pressurize, preformed.
Claims (4)
1, a kind of independent pressure-keeping mechanism of injection machine, it comprises nozzle (1), front barrel (2), pressurizer (13), the rear portion of described front barrel (2) is connected with barrel (6), be provided with a screw rod (7) consistent in the described barrel (6) with the injection canal axis, be provided with a pressurize passage in the pressurizer (13), be provided with a pressurize plunger (4) and the pressurize oil cylinder (5) that can make pressurize plunger (4) motion of joining in the described pressurize passage with the vias inner walls sealed sliding;
It is characterized in that: also connect a gate-valve device (14) on the described front barrel (2), described gate-valve device (14) is located between pressurizer (13) and the barrel (6), establish a gate valve core (3) and the gate valve oil cylinder (8) that can make gate valve core (3) motion in the described gate-valve device (14), described pressurize plunger (4) is independent mutually with pressurize oil cylinder (5).
2, the independent pressure-keeping mechanism of injection machine according to claim 1 is characterized in that: described pressurize plunger (4) is meant independently mutually that with pressurize oil cylinder (5) piston rod and pressurize plunger (4) in the pressurize oil cylinder (5) are separated.
3, the independent pressure-keeping mechanism of injection machine according to claim 1 is characterized in that: the fixed block (10) on the top of described gate valve core (3) is provided with the anti-rotation guide rod (12) that prevents that gate valve core (3) from radially rotating.
4, the independent pressure-keeping mechanism of injection machine according to claim 1 is characterized in that: have in the described gate valve core (3) one with the passage of gate valve core (3) axis normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201221891U CN201272000Y (en) | 2008-07-25 | 2008-07-25 | Independent pressure maintaining mechanism of injection moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201221891U CN201272000Y (en) | 2008-07-25 | 2008-07-25 | Independent pressure maintaining mechanism of injection moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201272000Y true CN201272000Y (en) | 2009-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201221891U Expired - Fee Related CN201272000Y (en) | 2008-07-25 | 2008-07-25 | Independent pressure maintaining mechanism of injection moulding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201272000Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464751A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Injection molding mold less prone to generating melted marks |
| CN104494075A (en) * | 2014-12-26 | 2015-04-08 | 广东富瑞精密机械有限公司 | Self-cleaning plunger type injection device and self-cleaning plunger type injection molding machine |
| CN105058710A (en) * | 2014-10-09 | 2015-11-18 | 广州迅智机械有限公司 | Nanometer montmorillonite and PET molding conversion valve |
-
2008
- 2008-07-25 CN CNU2008201221891U patent/CN201272000Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464751A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Injection molding mold less prone to generating melted marks |
| CN103464751B (en) * | 2013-08-26 | 2016-06-01 | 苏州米莫金属科技有限公司 | A kind of die for injection molding being unfavorable for producing molten trace |
| CN105058710A (en) * | 2014-10-09 | 2015-11-18 | 广州迅智机械有限公司 | Nanometer montmorillonite and PET molding conversion valve |
| CN104494075A (en) * | 2014-12-26 | 2015-04-08 | 广东富瑞精密机械有限公司 | Self-cleaning plunger type injection device and self-cleaning plunger type injection 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: 20090715 Termination date: 20110725 |