CN102996569A - Pressure machine balance cylinder capable of preventing over travel - Google Patents
Pressure machine balance cylinder capable of preventing over travel Download PDFInfo
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- CN102996569A CN102996569A CN2012105836985A CN201210583698A CN102996569A CN 102996569 A CN102996569 A CN 102996569A CN 2012105836985 A CN2012105836985 A CN 2012105836985A CN 201210583698 A CN201210583698 A CN 201210583698A CN 102996569 A CN102996569 A CN 102996569A
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Abstract
The invention relates to a pressure machine balance cylinder capable of preventing over travel. The pressure machine balance cylinder capable of preventing the over travel comprises a balance cylinder body, wherein a front cover and a rear cover are respectively arranged in the front and the back of the balance cylinder body, a piston is arranged in an inner chamber of the balance cylinder body, an oil storage chamber is arranged in the front cover, an oil storage piston is arranged in the oil storage chamber, a piston rod is arranged in the inner chamber of the balance cylinder body, one end of the piston rod is fixedly connected with the piston, and the other end of the piston rod penetrates through the oil storage piston and extends out of the front cover. The pressure machine balance cylinder capable of preventing the over travel is characterized in that an approach switch is installed on the front cover of the balance cylinder body. In addition, the pressure machine balance cylinder capable of preventing the over travel has the advantages that the oil storage chamber is additionally arranged inside the balance cylinder body, and furthermore guarantees that the balance cylinder body can work normally under a condition of no oil feed for lubrication in a long term, and an over travel warning device is arranged on the balance cylinder body, so that the problem that parts of a balance device are destroyed by the over travel of a working stroke due to a faulty operation of a pressure machine is solved.
Description
Technical field
The present invention relates to a kind of compensating cylinder for press machine, especially a kind of press balance cylinder that prevents the excess of stroke.
Background technique
Slide block in the press machine pumping from the upper dead center to the lower dead centre except the normal transmission system of needs, control system, also needs to arrange compensating cylinder and comes balance slide block and patrix weight, avoids the additional impact in the working procedure.The compensating cylinder internal air pressure is too high all can to produce a series of adverse consequences with crossing to hang down, and realize by manual regulating device mostly in the atmospheric pressure levelling of Equilibrator the home and abroad at present.
Chinese patent application CN201020628069.6 discloses a kind of automatic pressure adjusting device for press balance cylinder, efficiently solves the technical barrier of the key components and parts pressure processing precision such as " Deidro Deluxe " medium-to-high grade car roof, door.But existing compensating cylinder is in using process, tends to occur because the misoperation of press machine, and the working stroke excess of stroke that causes, and then damages the problem of component in the Equilibrator.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of press balance cylinder that prevents the excess of stroke is provided, solved owing to the press machine misoperation makes the working stroke excess of stroke and damaged component problem in the average weighing apparatus device.
According to technological scheme provided by the invention, the described press balance cylinder that prevents the excess of stroke comprises the compensating cylinder cylinder body, the front and back of compensating cylinder cylinder body arrange respectively protecgulum and bonnet, in the inner chamber of compensating cylinder cylinder body, piston is set, shoe cream room is set in protecgulum, Oil preserving piston is set in shoe cream room; In the inner chamber of described compensating cylinder cylinder body piston rod is set, an end of piston rod is fixedly connected with piston, and the other end passes the outside that Oil preserving piston stretches out protecgulum; It is characterized in that: the protecgulum at described compensating cylinder cylinder body is installed approach switch.
Form elastic oil-storage cavity between the bottom of described Oil preserving piston and shoe cream room, in elastic oil-storage cavity, be full of lubricating grease.
Along the annular shoe cream room of being circumferentially with of piston, annular shoe cream room is uncovered shape, is full of lubricating grease in annular shoe cream room on the outer wall of described piston.
The position that contacts with the compensating cylinder inboard wall of cylinder block on the outer wall of described piston arranges some annular ridges, and annular ridge is along the circumferential setting of piston outer wall.
Be provided with cylinder body suction port and cylinder body air outlet at described compensating cylinder cylinder body, cylinder body suction port and cylinder body air outlet lay respectively at the both sides of piston.
The press balance cylinder of the excess of stroke that prevents of the present invention has the following advantages: (1) has set up shoe cream room in the inside of compensating cylinder cylinder body, guarantees that the compensating cylinder cylinder body works under for a long time without the feeding lubricating condition; (2) be provided with excess of stroke warning device at the compensating cylinder cylinder body, solved owing to the press machine misoperation makes the working stroke excess of stroke and damaged component problem in the Equilibrator.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the partial schematic diagram of piston outer wall of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete accompanying drawing.
Such as Fig. 1 ~ shown in Figure 2: as described in the press balance cylinder automatically regulated of pressure comprise compensating cylinder cylinder body 1, protecgulum 2, bonnet 3, piston 4, Oil preserving piston 5, elastic oil-storage cavity 6, annular shoe cream room 7, annular ridge 8, piston rod 9, cylinder body suction port 10, cylinder body air outlet 11, control valve valve body 12, control room 13-1, discharge chamber 13-2, the 13-3 of balance cylinder, plenum 14, control valve suction port 15-1, control valve air outlet 15-2, the first valve pocket 16-1, the second valve pocket 16-2, spool 17, supporting spring 18, gland 19, diaphragm 20, control chamber 21-1, feedback cavity 21-2, E-P valve 22, suction port 22-1, control mouthful 22-2, pressure transducer 23, observing and controlling electric loop 24, approach switch 25, relief opening 26 etc.
As shown in Figure 1, the present invention includes compensating cylinder cylinder body 1, the front and back of compensating cylinder cylinder body 1 arrange respectively protecgulum 2 and bonnet 3, and piston 4 is set in the inner chamber of compensating cylinder cylinder body 1, in protecgulum 2 shoe cream room are set, and Oil preserving piston 5 is set in shoe cream room; Piston rod 9 is set in the inner chamber of described compensating cylinder cylinder body 1, and an end of piston rod 9 is fixedly connected with piston 4, and the other end passes the outside that Oil preserving piston 5 stretches out protecgulum 2; Be provided with cylinder body suction port 10 and cylinder body air outlet 11 at described compensating cylinder cylinder body 1, cylinder body suction port 10 and cylinder body air outlet 11 lay respectively at the both sides of piston 4;
As shown in Figure 1, in a side of described compensating cylinder cylinder body 1 control valve valve body 12 is installed, at control valve valve body 12 control valve suction port 15-1 and control valve air outlet 15-2 is set, control valve air outlet 15-2 is communicated with the cylinder body suction port 10 of compensating cylinder cylinder body 1; Set gradually control room 13-1, discharge chamber 13-2 and the 13-3 of balance cylinder in the inside of described control valve valve body 12, in the periphery of the 13-3 of balance cylinder plenum 14 is set; The first valve pocket 16-1 and the second valve pocket 16-2 are set respectively in described discharge chamber 13-2 and the 13-3 of balance cylinder, in the first valve pocket 16-1 and the second valve pocket 16-2, spool 17 is set, at the spool 17 that is positioned at control room 13-1 supporting spring 18 and gland 19 are installed, between supporting spring 18 and the gland 19 diaphragm 20 is set, diaphragm 20 contacts with the inwall of control room 13-1; Described supporting spring 18 and gland 19 are separated into the control chamber 21-1 of a side and the feedback cavity 21-2 of opposite side with control room 13-1, described feedback cavity 21-2 and control valve air outlet 15-1 are connected, control chamber 21-1 and plenum 14 are connected, when having eliminated the control of large gradient pressure because atmospheric pressure noise and the vibration of gain feedback generation;
As shown in Figure 1, at the valve gap of described control valve valve body 12 E-P valve 22 is installed, thereby the pneumatic damping when having reduced 22 work of E-P valve has rationally improved control sensitivity; Described E-P valve 22 is two-position two-way solenoid valve, and the suction port 22-1 of E-P valve 22 is communicated with control valve suction port 15-1, and the control chamber 21-1 in the control mouth 22-2 of E-P valve 22 and the control valve valve body 12 is communicated with; Setting pressure sensor 23 and observing and controlling electric loop 24 on described control valve valve body 12, pressure transducer 23 are installed on the runner that links to each other with control valve air outlet 15-2, and observing and controlling electric loop 24 is electrically connected with pressure transducer 23 and E-P valve 22 respectively;
As shown in Figure 1, the described 13-3 of balance cylinder is connected with discharge chamber 13-2, and the 13-3 of balance cylinder has reduced the pressure of control chamber 21-1 and the error amount of control valve air outlet 15-2 pressure;
As shown in Figure 1, at described the first valve pocket 16-1 relief opening 26 is set, is used for the pressure that control valve air outlet 15-2 is too high and discharges atmosphere;
As shown in Figure 1, at the protecgulum 2 of described compensating cylinder cylinder body 1 approach switchs 25 are installed, are prevented piston 4 excess of stroke and damage component;
As shown in Figure 1, form elastic oil-storage cavity 6 between the bottom of described Oil preserving piston 5 and shoe cream room, in elastic oil-storage cavity 6, be full of lubricating grease; Along the annular shoe cream room 7 of being circumferentially with of piston 4, annular shoe cream room 7 is uncovered shape, is full of lubricating grease in annular shoe cream room 7 on the outer wall of described piston 4; The present invention sets up elastic oil-storage cavity 6 and annular shoe cream room 7 in the moving element inside of compensating cylinder cylinder body 1, and fills it up with lubricant grease in these two shoe cream rooms, can guarantee compensating cylinder cylinder body 1 long-term without the normal operation under the feeding lubricating condition;
As shown in Figure 2, the position that contacts with compensating cylinder cylinder body 1 inwall on the outer wall of described piston 4 arranges some annular ridges 8, and annular ridge 8 is along the circumferential setting of piston 4 outer walls; Piston 4 only has annular ridge 8 parts and the inwall of compensating cylinder cylinder body 1 to rub mutually when work like this, has reduced the friction factor between piston 4 and the compensating cylinder cylinder body 1, thereby has avoided foreign matter to enter the problem that abrades or draw bad cylinder body behind the compensating cylinder.
Working principle of the present invention: the suction port 22-1 of E-P valve 22 links to each other with control valve suction port 15-1, and pressurized gas is entered by control valve suction port 15-1, enters E-P valve 22; After E-P valve 22 obtains control electrical signal that observing and controlling electric loop 24 sends, pressurized gas is entered the control chamber 21-1 of control valve valve body 12 by the control mouth 22-2 of E-P valve 22, promoting spool 17 moves, thereby the pressurized gas by control valve suction port 15-1 input flows into control valve air outlet 15-2, also flows into the 13-3 of balance cylinder simultaneously; Pressurized air by control valve air outlet 15-2 output enters in the inner chamber of compensating cylinder cylinder body 1, pushing piston 4 actions; Pressure transducer 23 can be by the runner pressure that links to each other with control valve air outlet 15-2, record force value, air pressure signal is fed back to observing and controlling electric loop 24, observing and controlling electric loop 24 is according to air pressure signal, send signal and make 22 outages of E-P valve or energising, thereby realize the controlled pressurize of compensating cylinder.
The piston 4 of the present invention in compensating cylinder cylinder body 1 is in the process of action, and the approach switch 25 that is installed on compensating cylinder cylinder body 1 protecgulum 2 carries out excess of stroke alarm, prevents from damaging component in the Equilibrator owing to the press machine misoperation makes the working stroke excess of stroke.
Claims (5)
1. press balance cylinder that prevents the excess of stroke, comprise compensating cylinder cylinder body (1), the front and back of compensating cylinder cylinder body (1) arrange respectively protecgulum (2) and bonnet (3), piston (4) is set in the inner chamber of compensating cylinder cylinder body (1), in protecgulum (2), shoe cream room is set, Oil preserving piston (5) is set in shoe cream room; Piston rod (9) is set in the inner chamber of described compensating cylinder cylinder body (1), and an end of piston rod (9) is fixedly connected with piston (4), and the other end passes the outside that Oil preserving piston (5) stretches out protecgulum (2); It is characterized in that: the protecgulum (2) at described compensating cylinder cylinder body (1) is installed approach switch (25).
2. the automatic press balance cylinder of regulating of pressure as claimed in claim 1 is characterized in that: form elastic oil-storage cavity (6) between the bottom of described Oil preserving piston (5) and shoe cream room, be full of lubricating grease in elastic oil-storage cavity (6).
3. the press balance cylinder automatically regulated of pressure as claimed in claim 1, it is characterized in that: be circumferentially with annular shoe cream room (7) along piston (4) on the outer wall of described piston (4), annular shoe cream room (7) is uncovered shape, is full of lubricating grease in annular shoe cream room (7).
4. the press balance cylinder automatically regulated of pressure as claimed in claim 1, it is characterized in that: the position that contacts with compensating cylinder cylinder body (1) inwall on the outer wall of described piston (4) arranges some annular ridges (8), and annular ridge (8) is along the circumferential setting of piston (4) outer wall.
5. the press balance cylinder automatically regulated of pressure as claimed in claim 1, it is characterized in that: be provided with cylinder body suction port (10) and cylinder body air outlet (11) at described compensating cylinder cylinder body (1), cylinder body suction port (10) and cylinder body air outlet (11) lay respectively at the both sides of piston (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105836985A CN102996569A (en) | 2012-12-28 | 2012-12-28 | Pressure machine balance cylinder capable of preventing over travel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105836985A CN102996569A (en) | 2012-12-28 | 2012-12-28 | Pressure machine balance cylinder capable of preventing over travel |
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| Publication Number | Publication Date |
|---|---|
| CN102996569A true CN102996569A (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105836985A Pending CN102996569A (en) | 2012-12-28 | 2012-12-28 | Pressure machine balance cylinder capable of preventing over travel |
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| CN (1) | CN102996569A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730744A (en) * | 2018-06-14 | 2018-11-02 | 宁波威曼智能科技有限公司 | A kind of cylinder barrel inner wall oil dispersing device |
| CN110714953A (en) * | 2019-10-18 | 2020-01-21 | 李文标 | Automobile hydraulic cylinder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726282A (en) * | 1986-04-28 | 1988-02-23 | Peninsular, Inc. | Fixture cylinder with proximity switches mounted on end caps without spacers |
| EP0514748A1 (en) * | 1991-05-23 | 1992-11-25 | Bw Hydraulik Gmbh | Device for restricting the stroke of a hydraulic cylinder |
| CN2169723Y (en) * | 1992-09-28 | 1994-06-22 | 王万孝 | Non rotary high speed through hole motive oil cylinder |
| CN1093318A (en) * | 1993-04-05 | 1994-10-12 | 山东工业大学 | Quick depressurisation high power screw press |
| CN2856535Y (en) * | 2005-12-20 | 2007-01-10 | 无锡市拓发自控设备有限公司 | Oil-less lub cylinder with elastic oil storage chamber |
| CN202348818U (en) * | 2011-12-01 | 2012-07-25 | 烟台未来自动装备有限责任公司 | Oil cylinder with proximity switch |
| CN203009448U (en) * | 2012-12-28 | 2013-06-19 | 无锡市拓发自控设备有限公司 | Pressure machine balance cylinder capable of preventing over travel |
-
2012
- 2012-12-28 CN CN2012105836985A patent/CN102996569A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726282A (en) * | 1986-04-28 | 1988-02-23 | Peninsular, Inc. | Fixture cylinder with proximity switches mounted on end caps without spacers |
| EP0514748A1 (en) * | 1991-05-23 | 1992-11-25 | Bw Hydraulik Gmbh | Device for restricting the stroke of a hydraulic cylinder |
| CN2169723Y (en) * | 1992-09-28 | 1994-06-22 | 王万孝 | Non rotary high speed through hole motive oil cylinder |
| CN1093318A (en) * | 1993-04-05 | 1994-10-12 | 山东工业大学 | Quick depressurisation high power screw press |
| CN2856535Y (en) * | 2005-12-20 | 2007-01-10 | 无锡市拓发自控设备有限公司 | Oil-less lub cylinder with elastic oil storage chamber |
| CN202348818U (en) * | 2011-12-01 | 2012-07-25 | 烟台未来自动装备有限责任公司 | Oil cylinder with proximity switch |
| CN203009448U (en) * | 2012-12-28 | 2013-06-19 | 无锡市拓发自控设备有限公司 | Pressure machine balance cylinder capable of preventing over travel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730744A (en) * | 2018-06-14 | 2018-11-02 | 宁波威曼智能科技有限公司 | A kind of cylinder barrel inner wall oil dispersing device |
| CN110714953A (en) * | 2019-10-18 | 2020-01-21 | 李文标 | Automobile hydraulic cylinder |
| CN110714953B (en) * | 2019-10-18 | 2021-02-12 | 扬州市正浩液压机械设备有限公司 | Automobile hydraulic cylinder |
| CN112648257A (en) * | 2019-10-18 | 2021-04-13 | 李文标 | Hydraulic cylinder and use method |
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Application publication date: 20130327 |