CN114311580B - Injection molding machine pre-molding back pressure conversion valve block - Google Patents
Injection molding machine pre-molding back pressure conversion valve block Download PDFInfo
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- CN114311580B CN114311580B CN202111674852.5A CN202111674852A CN114311580B CN 114311580 B CN114311580 B CN 114311580B CN 202111674852 A CN202111674852 A CN 202111674852A CN 114311580 B CN114311580 B CN 114311580B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 41
- 238000001746 injection moulding Methods 0.000 title claims abstract description 32
- 238000000465 moulding Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000013016 damping Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims 3
- 239000002184 metal Substances 0.000 claims 2
- 241000233866 Fungi Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000010349 pulsation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a pre-molding back pressure conversion valve block of an injection molding machine, relates to the field of valve block equipment, and aims at solving the problems that manual control of the injection molding machine is not convenient in electrohydraulic control and the like. The invention utilizes the principle of installing the Boss pulsation damper in the conversion valve block to prevent the 'water hammer effect' from damaging the conversion valve block and other valve components in the conversion valve block caused by too strong liquid flow, carries out convenient insertion treatment on the pilot overflow valve, reduces the assembly space and the valve block volume of the conversion valve block, is beneficial to the maintenance and replacement work of the overflow valve, avoids the defect that the pilot overflow valve cannot be integrally installed, reduces the spring force in the inserted overflow valve, and avoids high pressure regulating deviation caused by too high spring stiffness.
Description
Technical Field
The invention relates to the field of valve block equipment, in particular to a pre-molding back pressure conversion valve block of an injection molding machine.
Background
In the existing injection molding machine, a manual control mode of the pre-molding back pressure is still widely used, but with the progress of electro-hydraulic proportional technology and the increasing of the quality requirement on plastic products, the electro-hydraulic proportional control mode of the pre-molding back pressure is increasingly adopted, the back pressure of the injection molding machine refers to the pressure of a hydraulic cylinder behind an injection screw, namely the pressure of the injection molding cylinder during pre-molding, the back pressure is high, the pre-molding is slow, the back pressure is low, the pre-molding is fast, the back pressure refers to the pressure of the rear end, and the back pressure is generally used for describing the pressure of fluid discharged by a system at an outlet or on a secondary side, which is opposite to the flowing direction.
In combination with the technical problems encountered above, on the premise of not changing the original machine structure and injection valve block, valves such as a pre-molding back pressure function conversion valve block are additionally arranged on the injection molding machine, so that the purpose that the pre-molding back pressure is converted into an electrohydraulic proportional control mode by a manual control mode is achieved, meanwhile, the 'water hammer effect' in the pre-molding process and the defect that the existing pilot overflow valve cannot be integrally installed and is inconvenient to carry out post-treatment and maintenance are overcome, meanwhile, the patent of a pre-molding anti-rotation oil way for the injection molding machine, with reference to a patent document number 201420717087.X, only solves the problem that the internal oil way of the valve block is blocked and cannot be pre-molded, but the 'water hammer effect' caused by oil impact after the oil way is not rotated is not considered to damage the components in the valve block, and then the pre-molding back pressure conversion valve block of the injection molding machine is provided to solve the technical problems.
Disclosure of Invention
Object of the invention
In order to solve the technical problems in the background art, the invention provides a pre-molded back pressure conversion valve block of an injection molding machine, which utilizes the principle that a Bodhisattva pulse damper is arranged in the conversion valve block to prevent the conversion valve block and other valve components in the conversion valve block from being damaged by 'water hammer effect' caused by too strong liquid flow, and performs convenient insertion treatment on a pilot overflow valve, so that the assembly space and the valve block volume of the conversion valve block are reduced, the overhaul and replacement work of the overflow valve are facilitated, the defect that the pilot overflow valve cannot be integrally installed is avoided, the spring force is reduced in the inserted overflow valve, and the pressure regulating deviation caused by the too high spring rigidity is avoided.
(II) technical scheme
The invention provides a pre-molding back pressure conversion valve block of an injection molding machine, which comprises an injection valve block, wherein the top surface of the injection valve block is provided with a superposition valve block, the top surface of the superposition valve block is provided with a plug-in type pilot overflow valve, the plug-in type pilot overflow valve is internally provided with a plug-in overflow structure B through a pipeline with a threaded hole, the surface of the injection valve block is provided with a plurality of valve holes, and the inner parts of the valve holes are all provided with damping structures A.
As a preferable scheme of the invention, the plug overflow structure B comprises a threaded shell and a sealing sleeve, wherein the bottom opening of the threaded shell is fixedly connected with the top opening of the sealing sleeve, the inner wall of the sealing sleeve is movably connected with a movable column, one end of the movable column penetrates out of the sealing sleeve, the other side of the movable column is provided with a spring, the other end of the spring is provided with a limiting piece, and the other side of the limiting piece is welded with an adjusting bolt penetrating through the top of the threaded shell.
As a preferable scheme of the invention, one end of the adjusting bolt, which is positioned at the top of the threaded shell, is sleeved with the adjusting nut, round holes are formed in two sides of the limiting piece, cylindrical springs are arranged in the round holes, the length of the adjusting bolt, which penetrates out of the threaded shell, is adjusted by screwing the adjusting nut, so that spring force is reduced in the plug-in overflow valve, and high pressure adjusting deviation caused by overhigh spring stiffness is avoided.
As a preferable scheme of the invention, a through hole for the penetration of the adjusting bolt is formed in the top of the threaded shell, a through hole for the penetration of one end of the movable column is formed in the bottom of the sealing sleeve, overflow ports are formed in two sides of the sealing sleeve, and threads are formed in the outer ring of the threaded shell.
As a preferable scheme of the invention, the bottom surface of the plug-in type pilot overflow valve is provided with a threaded hole, and threads in the threaded hole are meshed with threads in the outer ring of the threaded shell.
As a preferable scheme of the invention, the damping structure A comprises a damper shell, through holes are formed in the side walls of the valve holes, the inner walls of the through holes are clamped with the outer ring of the damper shell, a liquid inlet pipeline and a liquid outlet pipeline are sleeved at one end of the damper shell, which is positioned in the valve holes, a liquid blocking disc is sleeved at one end of the liquid inlet pipeline, which is far away from the damper shell, and the outer ring of the liquid blocking disc is welded with the periphery of the inner wall of the valve holes.
As a preferable scheme of the invention, one end of the damper shell, which is positioned outside the injection valve block, is provided with an air bag inflation valve, the other end of the air bag inflation valve is provided with an air bag positioned inside the damper shell, one end of the damper shell, which is close to the liquid inlet pipeline or the liquid outlet pipeline, is provided with a through groove, the inner wall of the through groove is welded with a connecting rod, one end of the connecting rod, which is far away from the liquid outlet pipeline and the liquid inlet pipeline, is welded with a fungus-shaped rod, after liquid enters into a valve hole in the injection valve block, the liquid enters into the damper shell through the liquid inlet pipeline, after being extruded by the air bag in the damper shell, the flow of the liquid is slowed down by the elasticity of the air bag, and the extruded air bag discharges the liquid to the liquid outlet pipeline under the shunting action of the fungus-shaped rod along with the release of the elasticity.
As a preferable scheme of the invention, the bottom surface of the injection valve block is fixedly provided with a superposition one-way valve and an electromagnetic directional valve, the side edge of the injection valve block is respectively provided with a proportional pressure valve and an electro-hydraulic directional valve, and the side edge of the superposition valve block is fixedly provided with an electromagnetic directional valve.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial technical effects:
1. the pilot overflow valve in the conversion valve block is subjected to treatment of facilitating insertion by means of the thought of the plug-in overflow valve, so that the assembly space and the valve block volume of the conversion valve block are reduced, the overhaul and replacement work of the overflow valve are facilitated, the defect that the pilot overflow valve cannot be integrally installed is avoided, the spring force is reduced in the plug-in overflow valve, the pressure regulating deviation caused by overhigh spring stiffness is avoided, and the discharging of the injection molding machine is further influenced.
2. According to the invention, through installing structures such as the injection valve block, the damper shell and the like, the phenomenon that the water hammer effect is caused to damage the conversion valve block and other valve components in the conversion valve block due to too strong liquid flow is realized, after the liquid enters the valve hole in the injection valve block, the liquid enters the damper shell through the liquid inlet pipeline, after the liquid is extruded by the air bag in the damper shell, the liquid flow is slowed down by the elasticity of the air bag, and the extruded air bag discharges the liquid to the liquid outlet pipeline under the shunting action of the fungus-shaped rod along with the release of the elasticity.
In summary, the invention utilizes the principle of installing the Boss pulsation damper in the conversion valve block to prevent the 'water hammer effect' from damaging the conversion valve block and other valve components in the conversion valve block due to too strong liquid flow, and the pilot overflow valve is conveniently inserted, so that the assembly space and the valve block volume of the conversion valve block are reduced, the maintenance and replacement work of the overflow valve are facilitated, the defect that the pilot overflow valve cannot be integrally installed is avoided, the spring force is reduced in the inserted overflow valve, and the pressure regulating deviation caused by too high spring rigidity is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a pre-molding back pressure conversion valve block of an injection molding machine.
Fig. 2 is a schematic diagram of an injection valve block structure of a pre-molded back pressure conversion valve block of an injection molding machine.
Fig. 3 is a schematic diagram of a cross-sectional structure of a valve hole of a pre-molded back pressure conversion valve block of an injection molding machine.
Fig. 4 is an enlarged schematic view of a damping structure a of a pre-molded back pressure conversion valve block of an injection molding machine according to the present invention.
Fig. 5 is a schematic diagram of a plug-in pilot relief valve structure of a pre-molded back pressure conversion valve block of an injection molding machine.
Fig. 6 is a schematic diagram of a cross-sectional structure of a pilot relief valve inserted into a pre-molded back pressure conversion valve block of an injection molding machine.
Fig. 7 is an enlarged schematic diagram of an inserted overflow structure B of a pre-molded back pressure conversion valve block of an injection molding machine.
Reference numerals: 1. an injection valve block; 2. plug-in type pilot overflow valve; 3. a proportional pressure valve; 4. an electrohydraulic reversing valve; 5. stacking valve blocks; 6. superposing a one-way valve; 7. an electromagnetic reversing valve; 8. an electromagnetic reversing valve; 9. a valve hole; 10. a liquid blocking disc; 11. a connecting rod; 12. a liquid inlet pipe; 13. a liquid outlet pipe; 14. a mushroom stem; 15. an air bag; 16. an air bag inflation valve; 17. a damper housing; 18. a threaded housing; 19. an adjusting nut; 20. an adjusting bolt; 21. a movable column; 22. sealing sleeve; 23. a spring; 24. and a limiting piece.
Detailed Description
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures may be shown in exaggerated form in particular figures to illustrate related details or structures of embodiments of the present disclosure.
Embodiment one: referring to fig. 1-7, a pre-molded back pressure conversion valve block of an injection molding machine comprises an injection valve block 1, wherein a superposition valve block 5 is arranged on the top surface of the injection valve block 1, a plug-in type pilot overflow valve 2 is arranged on the top surface of the superposition valve block 5, a plug-in overflow structure B is arranged in the plug-in type pilot overflow valve 2 through a pipeline with a threaded hole, a plurality of valve holes 9 are arranged on the surface of the injection valve block 1, damping structures A are arranged in the valve holes 9, the plug-in overflow structure B comprises a threaded shell 18 and a sealing sleeve 22, the bottom opening of the threaded shell 18 is fixedly connected with the top opening of the sealing sleeve 22, the sealing sleeve 22 is inserted into a through hole on the surface of the superposition valve block 5, after the length of an adjusting bolt 20 penetrating out of the threaded shell 18 is adjusted through screwing an adjusting nut 19, then the threaded shell 18 is meshed with a threaded hole in the plug-in type pilot overflow valve 2 for rotation, one end of the inner wall of the sealing sleeve 22 is movably connected with a movable column 21 penetrating out of the sealing sleeve 22, the other side of the movable column 21 is provided with a spring 23, the other end of the spring 23 is provided with a limiting plate 24, when the movable column 21 is extruded by the impact of the liquid running in the valve block and penetrates out of one end of the sealing sleeve 22, the movable column 21 naturally moves towards the direction close to the threaded shell 18 and is extruded and compressed by the spring 23, meanwhile, the limiting plate 24 is pushed to move upwards by the spring 23, the cylindrical springs in the middle of the round holes on two sides of the limiting plate 24 form a support with the inner wall of the threaded shell 18 through the elasticity of the cylindrical springs, so that the limiting plate 24 and the spring 23 can form corresponding downward pressure on the movable column 21 to prevent a large amount of overflow of the liquid in the valve block, the other side of the limiting piece 24 is welded with an adjusting bolt 20 penetrating to the top of the threaded shell 18.
Embodiment two: referring to fig. 1-7, based on the first embodiment, an injection molding machine pre-molding back pressure conversion valve block is provided, an adjusting nut 19 is sleeved at one end of an adjusting bolt 20, which is located at the top of a threaded shell 18, round holes are formed in two sides of a limiting piece 24, cylindrical springs are arranged in the round holes, a through hole for the adjusting bolt 20 to penetrate out is formed in the top of the threaded shell 18, a through hole for one end of a movable column 21 to penetrate out is formed in the bottom of a sealing sleeve 22, overflow ports are formed in two sides of the sealing sleeve 22, overflowed liquid enters through the bottom through hole of the sealing sleeve 22 and flows away at the overflow ports on two sides of the sealing sleeve 22, the effect of the overflow valve is achieved, threads are formed in the outer ring of the threaded shell 18, threaded holes are formed in the bottom surface of the plug-in type pilot overflow valve 2, and the threads formed in the threaded holes are meshed with the outer ring of the threaded shell 18.
Embodiment III: referring to fig. 1-7, on the basis of the second embodiment, a back pressure conversion valve block of an injection molding machine is pre-molded, the damping structure a comprises a damper shell 17, through holes are formed in the side wall of a valve hole 9, the inner wall of the through holes is clamped with the outer ring of the damper shell 17, a liquid inlet pipeline 12 and a liquid outlet pipeline 13 are sleeved at one end of the damper shell 17, which is far away from the damper shell 17, of the damper shell 12, a liquid blocking disk 10 is sleeved at one end of the outer ring of the damper shell 10, the periphery of the inner wall of the valve hole 9 is welded, an air bag inflation valve 16 is arranged at one end of the damper shell 17, which is located outside the injection valve block 1, an air bag 15 is arranged at the other end of the air bag inflation valve 16, which is located inside the damper shell 17, after liquid enters the valve hole 9 inside the injection valve block 1, the liquid enters the inside the damper shell 17 through the air bag 15, after being extruded by the air bag 15 inside the air bag, the flow of the liquid is slowed down by the elasticity of the air bag 15, the liquid is prevented from being excessively damaged by the 'water hammer effect' on the conversion valve block and the valve part, the valve shell 17 is welded with the periphery of the inner wall of the valve shell 9, the air bag 11 is welded at one end of the side face of the air bag 11 is close to the side face of the air bag 11, the air bag 11 is welded with the air bag 11, the side face of the air valve is welded with the air valve, and the air bag 11 is welded with the air valve side face plate 11, and the air valve is welded with the air valve side face side plate 11, and side face plate 1.
The working principle and the concrete explanation of the invention:
firstly, a threaded hole or a threaded groove which is meshed with the outer ring threads of a threaded shell 18 is formed in the plug-in type pilot overflow valve 2, then a round hole which is matched with a sealing sleeve 22 is formed in the surface of a superposition valve block 5, then the sealing sleeve 22 is inserted into a through hole on the surface of the superposition valve block 5, after the length of an adjusting bolt 20 penetrating out of the threaded shell 18 is adjusted through screwing of an adjusting nut 19, the threaded shell 18 is meshed with the threaded hole in the plug-in type pilot overflow valve 2 for rotation installation, then the plug-in type pilot overflow valve 2 is fixed on the surface of the superposition valve block 5, when liquid running in the valve block impacts and extrudes a movable column 21 to penetrate through one end outside the sealing sleeve 22, the movable column 21 naturally moves towards the direction close to the threaded shell 18, and is accompanied by extrusion and compression of a spring 23, meanwhile, a cylindrical spring in the middle of round holes on two sides of the limiting piece 24 moves upwards, the cylindrical spring in the middle of the round hole on two sides of the limiting piece 24 forms a support with the inner wall of the threaded shell 18 through own elasticity, the limiting piece 24 and the spring 23 can form corresponding downward pressure for the movable column 21 to prevent large amount of liquid in the valve block from moving downwards, and liquid in the movable column 21 can move towards the two sides of the sealing sleeve 22 and overflow piece 22 moves towards the bottom of the sealing sleeve 22, and the overflow piece is at two sides of the overflow hole of the sealing sleeve 22 is achieved, and the overflow effect of the overflow valve is achieved at the bottom of the sealing sleeve is achieved;
and when the liquid such as fluid in the valve block runs, the damage of 'water hammer effect' to the switching valve block and other valve components in the switching valve block caused by too strong flow of the liquid is prevented, after the liquid enters the valve hole 9 in the injection valve block 1, the liquid enters the damper shell 17 through the liquid inlet pipeline 12, after being extruded by the air bag 15 in the damper shell 17, the flow of the liquid is slowed down by the elasticity of the air bag 15, and the extruded air bag 15 discharges the liquid to the liquid outlet pipeline 13 under the shunting action of the mushroom-shaped rod 14 along with the release of the elasticity, and is discharged to the injection molding machine under the guidance of the liquid outlet pipeline 13.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides an injection molding machine pre-molding backpressure change-over valve piece, includes injection valve piece (1), its characterized in that, the top surface of injection valve piece (1) is provided with stack valve piece (5), the top surface of stack valve piece (5) is provided with plug-in type guide overflow valve (2), the inside of plug-in type guide overflow valve (2) is through seting up screw hole pipeline and is installed grafting overflow structure B, a plurality of valve holes (9) have been seted up on the surface of injection valve piece (1), the inside of valve hole (9) all is provided with damping structure A, grafting overflow structure B includes screw shell (18) and seal cover (22), the bottom opening of screw shell (18) and the open-top fixed connection of seal cover (22), the inner wall swing joint of seal cover (22) has one end to wear out movable column (21) outside seal cover (22), the opposite side of movable column (21) is provided with spring (23), the other end of spring (23) is provided with spacing piece (24), and the opposite side welding of spacing piece (24) has adjusting bolt (20) that run through to screw shell (18) top, damping structure A includes that the inner wall (17) of clamp shell (17) has the through-hole of damping shell (17), one end decibel cover that attenuator shell (17) are located valve opening (9) inside is equipped with feed liquor pipeline (12) and drain pipe (13), and the one end cover that feed liquor pipeline (12) were kept away from attenuator shell (17) is equipped with and hinders liquid dish (10), and the outer lane that hinders liquid dish (10) welds around the inner wall of valve opening (9), logical groove has been seted up to the one end that attenuator shell (17) is close to feed liquor pipeline (12) or drain pipe (13), and the inner wall welding of logical groove has connecting rod (11), and the one end welding that drain pipe (13) and feed liquor pipeline (12) were kept away from to connecting rod (11) has fungus shape pole (14).
2. The injection molding machine pre-molding back pressure conversion valve block according to claim 1, wherein one end of the adjusting bolt (20) located at the top of the threaded shell (18) is sleeved with an adjusting nut (19), round holes are formed in two sides of the limiting piece (24), and cylindrical springs are arranged in the round holes.
3. The injection molding machine pre-molding back pressure conversion valve block according to claim 2, wherein a through hole for the adjusting bolt (20) to penetrate is formed in the top of the threaded shell (18), a through hole for one end of the movable column (21) to penetrate is formed in the bottom of the sealing sleeve (22), overflow ports are formed in two sides of the sealing sleeve (22), and threads are formed in the outer ring of the threaded shell (18).
4. The injection molding machine pre-molding back pressure conversion valve block according to claim 3, wherein a threaded hole is formed in the bottom surface of the plug-in type pilot overflow valve (2), and threads in the threaded hole are meshed with threads formed in the outer ring of the threaded shell (18).
5. The injection molding machine pre-molding back pressure conversion valve block according to claim 4, wherein one end of the damper housing (17) located outside the injection valve block (1) is provided with an air bag inflation valve (16), and the other end of the air bag inflation valve (16) is provided with an air bag (15) located inside the damper housing (17).
6. The injection molding machine pre-molding back pressure conversion valve block according to claim 5, wherein the inner wall of the (18) is sleeved with a metal sleeve with a round cross section and a U-shaped vertical cross section, and the inner wall of the metal sleeve is movably connected with one end of a cylindrical spring in round holes on two sides of the (24).
7. The injection molding machine pre-molding back pressure conversion valve block according to claim 6, wherein a stacked one-way valve (6) and an electromagnetic directional valve (7) are fixedly arranged on the bottom surface of the injection valve block (1), a proportional pressure valve (3) and an electro-hydraulic directional valve (4) are respectively arranged on the side edge of the injection valve block (1), and an electromagnetic directional valve is fixedly arranged on the side edge of the stacked valve block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111674852.5A CN114311580B (en) | 2021-12-31 | 2021-12-31 | Injection molding machine pre-molding back pressure conversion valve block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111674852.5A CN114311580B (en) | 2021-12-31 | 2021-12-31 | Injection molding machine pre-molding back pressure conversion valve block |
Publications (2)
| Publication Number | Publication Date |
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| CN114311580A CN114311580A (en) | 2022-04-12 |
| CN114311580B true CN114311580B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111674852.5A Active CN114311580B (en) | 2021-12-31 | 2021-12-31 | Injection molding machine pre-molding back pressure conversion valve block |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963900Y (en) * | 2006-11-03 | 2007-10-24 | 广东佳明机器有限公司 | Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine |
| CN203937141U (en) * | 2014-04-04 | 2014-11-12 | 宁波职业技术学院 | A kind of hydraulic system of thin-walled cutlery box special injection molding |
| CN206344426U (en) * | 2016-11-24 | 2017-07-21 | 无锡海天机械有限公司 | A kind of integral type back pressure controls oil circuit |
| CN211901134U (en) * | 2020-02-28 | 2020-11-10 | 河南省天宇净化技术有限公司 | Integrated valve block |
| CN215059742U (en) * | 2021-05-25 | 2021-12-07 | 宁波汉商液压有限公司 | Movable valve group convenient to install |
| CN113843996A (en) * | 2021-10-28 | 2021-12-28 | 佛山市宝捷精密机械有限公司 | High-response injection hydraulic circuit of injection molding machine and pilot control method |
-
2021
- 2021-12-31 CN CN202111674852.5A patent/CN114311580B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200963900Y (en) * | 2006-11-03 | 2007-10-24 | 广东佳明机器有限公司 | Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine |
| CN203937141U (en) * | 2014-04-04 | 2014-11-12 | 宁波职业技术学院 | A kind of hydraulic system of thin-walled cutlery box special injection molding |
| CN206344426U (en) * | 2016-11-24 | 2017-07-21 | 无锡海天机械有限公司 | A kind of integral type back pressure controls oil circuit |
| CN211901134U (en) * | 2020-02-28 | 2020-11-10 | 河南省天宇净化技术有限公司 | Integrated valve block |
| CN215059742U (en) * | 2021-05-25 | 2021-12-07 | 宁波汉商液压有限公司 | Movable valve group convenient to install |
| CN113843996A (en) * | 2021-10-28 | 2021-12-28 | 佛山市宝捷精密机械有限公司 | High-response injection hydraulic circuit of injection molding machine and pilot control method |
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| CN114311580A (en) | 2022-04-12 |
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