CN102248704A - Numerical control frame type over travel protective device for main cylinder of hydraulic machine - Google Patents
Numerical control frame type over travel protective device for main cylinder of hydraulic machine Download PDFInfo
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- CN102248704A CN102248704A CN2011101519125A CN201110151912A CN102248704A CN 102248704 A CN102248704 A CN 102248704A CN 2011101519125 A CN2011101519125 A CN 2011101519125A CN 201110151912 A CN201110151912 A CN 201110151912A CN 102248704 A CN102248704 A CN 102248704A
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- master cylinder
- main cylinder
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- cylinder
- numerical control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
- B30B15/285—Arrangements for preventing distortion of, or damage to, presses or parts thereof preventing a full press stroke if there is an obstruction in the working area
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Abstract
The invention relates to a numerical control frame type over travel protective device for a main cylinder of a hydraulic machine. The numerical control frame type over travel protective device for the main cylinder of the hydraulic machine is characterized by comprising a downlink pressurizing loop while an oil cylinder works normally and a main cylinder pressure releasing loop while the oil cylinder exceeds the travel, collision blocks mounted on the two sides of a hydraulic machine guide column and an extreme limiting switch mounted on the main cylinder, wherein the oil cylinder is formed by connecting a press main cylinder, a return cylinder, a pumping set, a main cylinder pressure regulating valve, an over travel valve block and an integrated control valve block. The numerical control frame type over travel protective device for the main cylinder of the hydraulic machine has the following advantages that: through the additionally arranged over travel valve block connected with the main cylinder pressure regulating valve in parallel, the collision blocks can collide the over travel valve block while electric operation is out of control and the press main cylinder exceeds a lower travel limit to continue to move downwards so that a roller reversing valve is reversed to release the pressure at a main cylinder upper chamber of the hydraulic machine; therefore, accidents caused by over travel of the main cylinder with pressure can be avoided to realize the purpose of protecting the press main cylinder and other hydraulic elements; moreover, the safety coefficient in operation can be also largely increased to assure the personal safety of the operators.
Description
Technical field
The invention belongs to the hydraulic machinery technical field, particularly relate to a kind of numerical control frame hydraulic press master cylinder overtravel protection device.
Background technology
Master cylinder is the main executing agency in the hydraulic press, and master cylinder needs constantly operation up and down at work, finishes the compression moulding to workpiece.Generally speaking, hydraulic press can be provided with mechanical type limit limit switch outside satisfying the required stroke range of user, by with electrical interlocks, when master cylinder moves to limes superiors or limit inferior,, protect the safety of press with the disconnected pump of hydraulic press.If hydraulic press operating trouble occurs in the process of work pressurization, the press main-cylinder stroke surpasses limit inferior, because its epicoele band is pressed, it is descending to cause master cylinder to continue, and will cause the damage of master cylinder and relevant Hydraulic Elements, when serious even can cause the generation of operating personnel's personal safety accident.
Summary of the invention
The present invention for solve the technical problem that exists in the known technology provide a kind of simple in structure, avoid press master cylinder band to press the excess of stroke and can improve the numerical control frame hydraulic press master cylinder overtravel protection device of handling safety coefficient.
The present invention for the technical scheme that solves the technical problem that exists in the known technology and take is: numerical control frame hydraulic press master cylinder overtravel protection device is characterized in that: master cylinder pressure release loop when the descending pressurization loop and the oil cylinder excess of stroke when comprising the oil cylinder operate as normal that is connected and composed by press master cylinder, kicker cylinder, pump group, master cylinder pressure regulator valve, excess of stroke valve piece and integrated control valve block, be installed in the collision block on the hydraulic press guide pillar both sides and be installed in limit limit switch on the master cylinder.
The present invention can also adopt following technical scheme:
Descending pressurization loop comprises during described oil cylinder operate as normal: pump group oil-out connects the integrated control valve block oil-in by pipeline, and the integrated control valve block oil-out connects epicoele, the master cylinder pressure regulator valve of master cylinder by pipeline.
Master cylinder pressure release loop comprises during the described oil cylinder excess of stroke: pump group oil-out connects the integrated control valve block oil-in by pipeline, and the integrated control valve block oil-out connects epicoele, the excess of stroke valve piece of master cylinder by pipeline.
Described limit limit switch comprises: limes superiors limit switch and limit inferior limit switch.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme, by increasing the excess of stroke valve piece in parallel with the master cylinder pressure regulator valve, when electric operation malfunctioning, the stroke limit inferior that surpasses the press master cylinder continues when descending, the collision block that is installed on the guide pillar will bump against the excess of stroke valve piece that is positioned at limit inferior limit switch below, make the commutation of roller reversal valve, thereby make the pressure release of press master cylinder epicoele, not only can avoid pressing the caused accident of the excess of stroke, realize the purpose of Hydraulic Elements such as protection press master cylinder because of the master cylinder band; But also can increase substantially the handling safety coefficient, ensure operating personnel's personal safety.
Description of drawings
Fig. 1 is a hydraulic schematic diagram of the present invention;
Fig. 2 is a frame for movement schematic diagram of the present invention;
Fig. 3 is the vertical view of Fig. 2.
Among the figure: 1, pump group; 2, integrated control valve block; 2-1, oil-in; 2-2, oil-out; 3, master cylinder pressure regulator valve; 4, excess of stroke valve piece; 5, collision block; 6, master cylinder; 7, kicker cylinder; 8, limes superiors limit switch; 9, limit inferior limit switch; 10, guide pillar; 11, the spacing collision block of limes superiors; 12, the spacing collision block of limit inferior.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1-Fig. 3; numerical control frame hydraulic press master cylinder overtravel protection device, is installed in the spacing collision block 11 of collision block 5, limes superiors, the spacing collision block 12 of limit inferior on hydraulic press guide pillar 10 both sides and is installed in limit limit switch on the master cylinder master cylinder pressure release loop when the descending pressurization loop and the oil cylinder excess of stroke when comprising the oil cylinder operate as normal that is connected and composed by press master cylinder 6, pump group 1, kicker cylinder 7, master cylinder pressure regulator valve 3, excess of stroke valve piece 4 and integrated control valve block 2.Described limit limit switch comprises: limes superiors limit switch 8 and limit inferior limit switch 9.
Descending pressurization loop comprises during described oil cylinder operate as normal: pump group 1 oil-out connects integrated control valve block 2 oil-in 2-1 by pipeline, integrated control valve block oil-out 2-2 connects epicoele, master cylinder pressure regulator valve 3 and the excess of stroke valve piece 4 of master cylinder 6 respectively by pipeline, and described master cylinder pressure regulator valve 3 is in parallel with excess of stroke valve piece 4.Carry out pressure regulation by 3 pairs of master cylinders of master cylinder pressure regulator valve, realize that the pressurization of press master cylinder is descending.
Master cylinder pressure release loop comprises during the described oil cylinder excess of stroke: pump group oil-out connects the integrated control valve block oil-in by pipeline, and the integrated control valve block oil-out connects the epicoele of master cylinder by pipeline.Carry out pressure regulation by 3 pairs of press master cylinders of master cylinder pressure regulator valve, once move malfunctioning, the stroke limit inferior that surpasses the press master cylinder continues when descending, the collision block 5 that is installed on the guide pillar will bump against the excess of stroke valve piece 4 that is positioned at limit inferior limit switch 9 belows, make the commutation of roller reversal valve, thereby make the pressure release of press master cylinder epicoele, avoid pressing the caused accident of the excess of stroke because of the master cylinder band.
The present invention is that the pressure with the master cylinder epicoele when the master cylinder excess of stroke releases by the increase excess of stroke valve piece in parallel with the master cylinder pressure regulator valve, avoids the master cylinder band to press the excess of stroke, thereby can realize protecting the purpose of Hydraulic Elements such as press master cylinder.
Claims (4)
1. numerical control frame hydraulic press master cylinder overtravel protection device is characterized in that: master cylinder pressure release loop when the descending pressurization loop and the oil cylinder excess of stroke when comprising the oil cylinder operate as normal that is connected and composed by press master cylinder, kicker cylinder, pump group, master cylinder pressure regulator valve, excess of stroke valve piece and integrated control valve block, be installed in the collision block on the hydraulic press guide pillar both sides and be installed in limit limit switch on the master cylinder.
2. numerical control frame hydraulic press master cylinder overtravel protection device according to claim 1; it is characterized in that: descending pressurization loop comprises during described oil cylinder operate as normal: pump group oil-out connects the integrated control valve block oil-in by pipeline, and the integrated control valve block oil-out connects epicoele, the master cylinder pressure regulator valve of master cylinder by pipeline.
3. numerical control frame hydraulic press master cylinder overtravel protection device according to claim 1; it is characterized in that: master cylinder pressure release loop comprises during the described oil cylinder excess of stroke: pump group oil-out connects the integrated control valve block oil-in by pipeline, and the integrated control valve block oil-out connects epicoele, the excess of stroke valve piece of master cylinder by pipeline.
4. numerical control frame hydraulic press master cylinder overtravel protection device according to claim 1, it is characterized in that: described limit limit switch comprises: limes superiors limit switch and limit inferior limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101519125A CN102248704A (en) | 2011-06-08 | 2011-06-08 | Numerical control frame type over travel protective device for main cylinder of hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101519125A CN102248704A (en) | 2011-06-08 | 2011-06-08 | Numerical control frame type over travel protective device for main cylinder of hydraulic machine |
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| CN102248704A true CN102248704A (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101519125A Pending CN102248704A (en) | 2011-06-08 | 2011-06-08 | Numerical control frame type over travel protective device for main cylinder of hydraulic machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649320A (en) * | 2012-02-17 | 2012-08-29 | 临沂为民机械有限公司 | Hydraulic vertical type oil press |
| CN102689449A (en) * | 2012-06-26 | 2012-09-26 | 苏州大学 | Gas-liquid boosting pressure machine |
| CN103448298A (en) * | 2013-08-19 | 2013-12-18 | 无锡源创机械科技有限公司 | Perforating-extruding force measurement protecting mechanism for double-acting extruding machine |
| CN105967091A (en) * | 2016-06-22 | 2016-09-28 | 苏州市盛百威包装设备有限公司 | Hydraulically-driven, liftable and high-carrying-capacity type logistical packaging platform |
| CN106044618A (en) * | 2016-06-22 | 2016-10-26 | 苏州市盛百威包装设备有限公司 | Double-cylinder driving high-bearing logistics packaging platform |
| CN106114960A (en) * | 2016-06-22 | 2016-11-16 | 无锡康柏斯机械科技有限公司 | A kind of auto parts and components hydraulic jack drives high-mechanic operating platform |
| CN106406238A (en) * | 2016-11-23 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | UGCAM method for improving circumferential milling capability of part |
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| GB690846A (en) * | 1950-05-02 | 1953-04-29 | Weingarten Ag Maschf | Improvements in and relating to the control of electric motors for driving presses |
| US2820250A (en) * | 1954-06-16 | 1958-01-21 | Adamson United Company | Press |
| CH431052A (en) * | 1965-09-14 | 1967-02-28 | Netstal Ag Maschf Giesserei | Safety device on plastic injection molding machine |
| US4433612A (en) * | 1980-03-04 | 1984-02-28 | Sms Schloemann-Siemag Aktiengesellschaft | Safety control device for protecting hydraulically held loads against uncontrolled pressure overloading |
| SU1433836A1 (en) * | 1986-11-05 | 1988-10-30 | Чимкентское Производственное Объединение По Выпуску Кузнечно-Прессового Оборудования | Guard of working zone of vertical press unit |
| CN2491339Y (en) * | 2001-05-24 | 2002-05-15 | 司秀菊 | Autoamtic position limitation hydraulic baling press |
| CN1765535A (en) * | 2004-10-29 | 2006-05-03 | 天津市天锻压力机有限公司 | Large-scale digit-controlled hydraulic pressure straightener main frame |
| CN201456410U (en) * | 2009-06-05 | 2010-05-12 | 天津市天锻液压有限公司 | Thermoplastic hydraulic press |
| CN101704060A (en) * | 2009-11-02 | 2010-05-12 | 一重集团大连设计研究院有限公司 | Self-adaptive pre-control method for movable beam position of oversize water press |
| CN102078911A (en) * | 2010-12-06 | 2011-06-01 | 中国重型机械研究院有限公司 | Quick return system for quick forging oil press |
-
2011
- 2011-06-08 CN CN2011101519125A patent/CN102248704A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB690846A (en) * | 1950-05-02 | 1953-04-29 | Weingarten Ag Maschf | Improvements in and relating to the control of electric motors for driving presses |
| US2820250A (en) * | 1954-06-16 | 1958-01-21 | Adamson United Company | Press |
| CH431052A (en) * | 1965-09-14 | 1967-02-28 | Netstal Ag Maschf Giesserei | Safety device on plastic injection molding machine |
| US4433612A (en) * | 1980-03-04 | 1984-02-28 | Sms Schloemann-Siemag Aktiengesellschaft | Safety control device for protecting hydraulically held loads against uncontrolled pressure overloading |
| SU1433836A1 (en) * | 1986-11-05 | 1988-10-30 | Чимкентское Производственное Объединение По Выпуску Кузнечно-Прессового Оборудования | Guard of working zone of vertical press unit |
| CN2491339Y (en) * | 2001-05-24 | 2002-05-15 | 司秀菊 | Autoamtic position limitation hydraulic baling press |
| CN1765535A (en) * | 2004-10-29 | 2006-05-03 | 天津市天锻压力机有限公司 | Large-scale digit-controlled hydraulic pressure straightener main frame |
| CN201456410U (en) * | 2009-06-05 | 2010-05-12 | 天津市天锻液压有限公司 | Thermoplastic hydraulic press |
| CN101704060A (en) * | 2009-11-02 | 2010-05-12 | 一重集团大连设计研究院有限公司 | Self-adaptive pre-control method for movable beam position of oversize water press |
| CN102078911A (en) * | 2010-12-06 | 2011-06-01 | 中国重型机械研究院有限公司 | Quick return system for quick forging oil press |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649320A (en) * | 2012-02-17 | 2012-08-29 | 临沂为民机械有限公司 | Hydraulic vertical type oil press |
| CN102649320B (en) * | 2012-02-17 | 2014-09-10 | 临沂为民机械有限公司 | Hydraulic vertical type oil press |
| CN102689449A (en) * | 2012-06-26 | 2012-09-26 | 苏州大学 | Gas-liquid boosting pressure machine |
| CN102689449B (en) * | 2012-06-26 | 2015-04-29 | 苏州大学 | Gas-liquid boosting pressure machine |
| CN103448298A (en) * | 2013-08-19 | 2013-12-18 | 无锡源创机械科技有限公司 | Perforating-extruding force measurement protecting mechanism for double-acting extruding machine |
| CN105967091A (en) * | 2016-06-22 | 2016-09-28 | 苏州市盛百威包装设备有限公司 | Hydraulically-driven, liftable and high-carrying-capacity type logistical packaging platform |
| CN106044618A (en) * | 2016-06-22 | 2016-10-26 | 苏州市盛百威包装设备有限公司 | Double-cylinder driving high-bearing logistics packaging platform |
| CN106114960A (en) * | 2016-06-22 | 2016-11-16 | 无锡康柏斯机械科技有限公司 | A kind of auto parts and components hydraulic jack drives high-mechanic operating platform |
| CN106406238A (en) * | 2016-11-23 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | UGCAM method for improving circumferential milling capability of part |
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Application publication date: 20111123 |