CN201218249Y - Main hydraulic cylinder of hydraulic bending machine - Google Patents
Main hydraulic cylinder of hydraulic bending machine Download PDFInfo
- Publication number
- CN201218249Y CN201218249Y CNU2008200508907U CN200820050890U CN201218249Y CN 201218249 Y CN201218249 Y CN 201218249Y CN U2008200508907 U CNU2008200508907 U CN U2008200508907U CN 200820050890 U CN200820050890 U CN 200820050890U CN 201218249 Y CN201218249 Y CN 201218249Y
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- hydraulic cylinder
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Abstract
The utility model discloses a main hydraulic cylinder of a hydraulic bending machine, comprising an end cover, a cylinder body, an external piston rod, a flange sleeve, an internal piston rod, a screw stem sleeve, a screw nut and a gland bush; the end cover is fixed at one end of the cylinder body, the screw stem sleeve, the screw nut and the gland bush are arranged at the other end of the cylinder body, the external piston rod is arranged inside the cylinder body, the piston end of the external piston rod is covered by the flange sleeve, the piston end of the internal piston rod extends inside the piston rod, the rod end of the internal piston rod is fixedly arranged at the end cover and an oil passage is arranged inside the internal piston rod. Compared with the traditional art, the main hydraulic cylinder is additionally provided with a cavity without a rod inside and cavity with a rod inside, therefore, the main hydraulic cylinder has special quick drive function; for hydraulic systems under the same driving condition, when an oil cylinder is positioned underneath or is under the weightless knife-out state, the two-stage acceleration function can still be realized easily; the contact forced area of the screw stem sleeve is larger than the adjusting nut of the main hydraulic cylinder of the traditional bending machine, thereby the contact rigidity and stability are improved and the better limiting accuracy is ensured.
Description
Technical field
The utility model relates to hydraulic bending press, is specifically related to a kind of master hydraulic cylinder of hydraulic bending press.
Background technique
The master hydraulic cylinder of current hydraulic bending press, the mechanism that adopts adjustable dead block, as shown in Figure 1, its shortcoming is as follows:
1, for pursuing bigger speed, make the piston rod of master hydraulic cylinder and cylinder diameter very approaching during design.Nonetheless, limited by the moulding of diameter standard, the rod chamber a area that piston rod of often arranging in pairs or groups out and cylinder diameter form is usually desirable not to the utmost, in little tonnage specification, this area is in state bigger than normal mostly, what limitation was brought thus is under the peer system flow, and the opening speed of master hydraulic cylinder is on the low side, thereby influences the working efficiency of bender.
2, master hydraulic cylinder is adjusted nut b and is stopped piston rod movement when the piston rod release moves to adjustment nut b position, and piston rod is used in masterpiece and adjusts on the nut b, passes to mandrel c thereby adjust nut b again by screw pair, becomes the tensile stress of mandrel c.Be subjected to structural limitations, the diameter dimension of mandrel c is all less, and safety coefficient is also lower, the long-term use down, and being in the mandrel c impact tension state under, to be very easy to occur stress concentrated, fatigue fracture.
The model utility content
The utility model is in order to overcome the deficiency that above prior art exists, and provides that a kind of opening speed is fast, the master hydraulic cylinder of high working efficiency, hydraulic bending press that limit accuracy is good.
The purpose of this utility model realizes by following technological scheme: the master hydraulic cylinder of this hydraulic bending press is characterized in that: comprise end cap, cylinder body, outer piston bar, flange cover, inner piston rod, screw rod cover, nut and gland; End cap is fixed at an end of cylinder body, screw rod cover, nut and gland are fixed at the other end of cylinder body, the outer piston bar is located in the cylinder body, the flange cover is placed on the piston end of outer piston bar, the piston end of inner piston rod puts in the outer piston bar, the rod end of inner piston rod is fixedly installed in end cap, has oil duct in the inner piston rod.
Hexagonal was stopped up in one of them opening of described oil duct was provided with.
Be provided with a dust ring in the described gland.
The piston end of described outer piston bar is provided with guide ring.
The piston end of described inner piston rod is provided with guide ring.
Be provided with two wear rings between described flange cover and the inner piston rod, be provided with two wear rings between screw rod cover and the outer piston bar.
Be provided with O shape circle between described end cap and the cylinder body, be provided with O shape circle between end cap and the inner piston rod, be provided with O shape circle between flange cover and the outer piston bar.
Being provided with two opposite pistons between the piston end of described outer piston bar and the cylinder body encloses with Y shape, one of them piston has a teflon back-up ring with Y shape astragal, be provided with two opposite pistons bars between flange cover and the inner piston rod with Y shape circle and teflon back-up ring, be provided with two opposite pistons between inner piston rod and the outer piston bar and enclose and the teflon back-up ring with Y shape.
Described screw rod cover is connected with worm gear, and worm gear is connected with worm screw.
Described cylinder body is provided with a lubricating cup, and the passage of lubricating cup leads to worm gear and worm screw.
The working principle of the master hydraulic cylinder of this hydraulic bending press:
The stroke adjustment process: motor drives worm screw, worm gear rotation by synchronous band, synchronizing wheel, flat key, the rotation of worm gear makes the screw rod cover realize linear reciprocating motion, thereby changed the relative position with the outer piston bar, corresponding variation has also just taken place in the stroke of master hydraulic cylinder.
Stretching out and withdrawal of outer piston bar: when the interior rodless cavity quick oil feeding of inner piston rod, the interior rod chamber oil extraction of inner piston rod, the outer rodless cavity repairing of outer piston bar, the outer rod chamber exhaust of outer piston bar, the outer piston bar moves downward.The slide plate of bender is connected by screw rod, ball ring and outer piston bar, on the worktable of bender bed die is housed, and needs the sheet material of processing to be placed on the bed die, and the slide plate that upper die tooling is housed is descending fast thereupon under the self gravitation effect.F.F. finishes, and upper die tooling is near workpiece.This moment, position limit switch sent signal, and slide plate is descending with work speed.The worker advances the stage, interior rodless cavity oil-feed, and interior rod chamber produces back pressure, outer rodless cavity oil-feed, interior rodless cavity and outer rodless cavity pressure begin to rise, and along with the distortion of workpiece, pressure reaches maximum value gradually.The worker advances to finish, system's pressurize.Afterwards, interior rodless cavity and the instantaneous release of outer rodless cavity, interior rod chamber oil-feed, interior rodless cavity and outer rodless cavity oil return, outer rod chamber is air-breathing, and after the pressure of interior rod chamber overcame slide plate and deadweight of outer piston bar and corresponding surface friction drag, slide plate was up, the withdrawal of outer piston bar.Different according to thickness of slab and material are adjusted principal pressure and stroke, just can by about mould suppress required shape.
The utility model has following advantage with respect to prior art:
One, this master hydraulic cylinder has been Duoed an interior rodless cavity and interior rod chamber than traditional similar oil hydraulic cylinder, thereby has a distinctive fast driving function, hydraulic system at equal drive condition, oil cylinder underlying or agravicly fall under the tool section spare, still can realize secondary speedup function easily, the speed of outer piston bar withdrawal is fast, and opening speed is fast, high working efficiency;
Two, piston rod does not need circumferential location in addition, because the circumferential rotation of outer piston bar, does not influence the proper functioning of oil hydraulic cylinder;
Three, lubricating cup has improved the lubricated of cylinder hole and worm couple, in case get rusty and cross quick-wearing;
Four, the contact lifting surface area of screw rod cover is much larger than the adjustment nut of traditional bender master hydraulic cylinder, thereby improved contact rigidity and stability, guarantees limit accuracy preferably.
Description of drawings
Fig. 1 is the structural representation of the master hydraulic cylinder of existing hydraulic bending press.
Fig. 2 is the structural representation of the master hydraulic cylinder of a kind of hydraulic bending press of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The master hydraulic cylinder of hydraulic bending press as shown in Figure 2 comprises end cap 1, cylinder body 2, outer piston bar 3, flange cover 4, inner piston rod 5, screw rod cover 6, nut 7 and gland 8; End cap 1 is fixed at an end of cylinder body 2, screw rod cover 6, nut 7 and gland 8 are fixed at the other end of cylinder body 2, outer piston bar 3 is located in the cylinder body 2, flange cover 4 is placed on the piston end of outer piston bar 3, the piston end of inner piston rod 5 puts in the outer piston bar 3, the rod end of inner piston rod 5 is fixedly installed in end cap 1, has oil duct 9 in the inner piston rod 5, and hexagonal stopped up 10 in one of them opening of oil duct 9 was provided with.
The piston end of outer piston bar 3 is provided with guide ring 11.The piston end of inner piston rod 5 is provided with guide ring 12.
Be provided with a dust ring 13 in the gland 8.Be provided with two wear rings 14 between flange cover 4 and the inner piston rod 5, be provided with two wear rings 15 between screw rod cover 6 and the outer piston bar 3.
Be provided with O shape circle 16 between end cap 1 and the cylinder body 2, be provided with five O shape circles 17 between end cap 1 and the inner piston rod 5, be provided with two O shape circles 18 between flange cover 4 and the outer piston bar 3.
Be provided with two opposite pistons between the piston end of outer piston bar 3 and the cylinder body 2 and enclose 19 with Y shape, one of them piston has a teflon back-up ring 20 with Y shape circle 19, be provided with two opposite pistons bars between flange cover 4 and the inner piston rod 5 with Y shape circle 21 and teflon back-up ring 22, be provided with two opposite pistons Y shape circle 23 and teflon back-up ring 24 between inner piston rod 5 and the outer piston bar 3.
Screw rod cover 6 is connected with worm gear 25, and worm gear 25 is connected with worm screw 26.Cylinder body 2 is provided with a lubricating cup 27, and the passage of lubricating cup 27 leads to worm gear 25 and worm screw 26.
The working principle of the master hydraulic cylinder of this hydraulic bending press:
The stroke adjustment process: motor drives worm screw 26, worm gear 25 rotations by synchronous band, synchronizing wheel, flat key, the rotation of worm gear 25 makes screw rod cover 6 realize linear reciprocating motion, thereby changed the relative position with outer piston bar 3, corresponding variation has also just taken place in the stroke of master hydraulic cylinder.
Stretching out and withdrawal of outer piston bar 3: when the interior rodless cavity of inner piston rod 5 3. during quick oil feeding, the 4. oil extraction of interior rod chamber of inner piston rod 5, the 1. repairing of outer rodless cavity of outer piston bar 3, the 2. exhaust of outer rod chamber of outer piston bar 3, outer piston bar 3 moves downward.The slide plate of bender is connected by screw rod, ball ring and outer piston bar 3, on the worktable of bender bed die is housed, and needs the sheet material of processing to be placed on the bed die, and the slide plate that upper die tooling is housed is descending fast thereupon under the self gravitation effect.F.F. finishes, and upper die tooling is near workpiece.This moment, position limit switch sent signal, and slide plate is descending with work speed.The worker advances the stage, the 3. oil-feed of interior rodless cavity, 4. interior rod chamber produces back pressure, the 1. oil-feed of outer rodless cavity, interior rodless cavity 3. and outer rodless cavity 1. pressure begin the rising, along with the distortion of workpiece, pressure reaches maximum value gradually.The worker advances to finish, system's pressurize.Afterwards, interior rodless cavity 3. and the 1. instantaneous release of outer rodless cavity, the 4. oil-feed of interior rod chamber, interior rodless cavity 3. and the 1. oil return of outer rodless cavity, outer rod chamber is 2. air-breathing, when interior rod chamber pressure 4. overcome slide plate and outer piston bar 3 is conducted oneself with dignity and corresponding surface friction drag after, slide plate is up, 3 withdrawals of outer piston bar.Different according to thickness of slab and material are adjusted principal pressure and stroke, just can by about mould suppress required shape.
Above-mentioned embodiment is a preferred embodiment of the present utility model; can not limit claim of the present utility model; other any change that does not deviate from the technical solution of the utility model and made or other equivalent substitute mode are included within the protection domain of the present utility model.
Claims (10)
1, the master hydraulic cylinder of hydraulic bending press is characterized in that: comprise end cap, cylinder body, outer piston bar, flange cover, inner piston rod, screw rod cover, nut and gland; End cap is fixed at an end of cylinder body, screw rod cover, nut and gland are fixed at the other end of cylinder body, the outer piston bar is located in the cylinder body, the flange cover is placed on the piston end of outer piston bar, the piston end of inner piston rod puts in the outer piston bar, the rod end of inner piston rod is fixedly installed in end cap, has oil duct in the inner piston rod.
2, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: hexagonal was stopped up in one of them opening of described oil duct was provided with.
3, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: be provided with a dust ring in the described gland.
4, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: the piston end of described outer piston bar is provided with guide ring.
5, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: the piston end of described inner piston rod is provided with guide ring.
6, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: be provided with two wear rings between described flange cover and the inner piston rod, be provided with two wear rings between screw rod cover and the outer piston bar.
7, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: be provided with O shape circle between described end cap and the cylinder body, be provided with O shape circle between end cap and the inner piston rod, be provided with O shape circle between flange cover and the outer piston bar.
8, the master hydraulic cylinder of hydraulic bending press according to claim 1, it is characterized in that: be provided with two opposite pistons between the piston end of described outer piston bar and the cylinder body and enclose with Y shape, one of them piston has a teflon back-up ring with Y shape astragal, be provided with two opposite pistons bars between flange cover and the inner piston rod with Y shape circle and teflon back-up ring, be provided with two opposite pistons between inner piston rod and the outer piston bar and enclose and the teflon back-up ring with Y shape.
9, the master hydraulic cylinder of hydraulic bending press according to claim 1 is characterized in that: described screw rod cover is connected with worm gear, and worm gear is connected with worm screw.
10, the master hydraulic cylinder of hydraulic bending press according to claim 9 is characterized in that: described cylinder body is provided with a lubricating cup, and the passage of lubricating cup leads to worm gear and worm screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200508907U CN201218249Y (en) | 2008-07-18 | 2008-07-18 | Main hydraulic cylinder of hydraulic bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200508907U CN201218249Y (en) | 2008-07-18 | 2008-07-18 | Main hydraulic cylinder of hydraulic bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218249Y true CN201218249Y (en) | 2009-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200508907U Expired - Fee Related CN201218249Y (en) | 2008-07-18 | 2008-07-18 | Main hydraulic cylinder of hydraulic bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218249Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927079A (en) * | 2012-11-12 | 2013-02-13 | 泸州华西机械有限责任公司 | Stroke adjustable oil cylinder |
| CN103307277A (en) * | 2013-06-14 | 2013-09-18 | 太原重工股份有限公司 | Hydraulic cylinder for tension straightener |
-
2008
- 2008-07-18 CN CNU2008200508907U patent/CN201218249Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927079A (en) * | 2012-11-12 | 2013-02-13 | 泸州华西机械有限责任公司 | Stroke adjustable oil cylinder |
| CN103307277A (en) * | 2013-06-14 | 2013-09-18 | 太原重工股份有限公司 | Hydraulic cylinder for tension straightener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Fulishi Hydraulic Cylinder Co., Ltd. Assignor: Foshan ACL Lifeng Machine Tool Co., Ltd. Contract record no.: 2010370000100 Denomination of utility model: Main hydraulic cylinder of hydraulic bending machine Granted publication date: 20090408 License type: Exclusive License Record date: 20100322 |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG FULISHI NEW MATERIALS CO., LTD. Free format text: FORMER OWNER: FOSHAN ACL LIFENG MACHINE TOOL CO., LTD. Effective date: 20140418 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528241 FOSHAN, GUANGDONG PROVINCE TO: 251700 BINZHOU, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140418 Address after: 251700 Huimin Economic Development Zone, Shandong Patentee after: SHANDONG ACL NEW MATERIALS CO., LTD. Address before: 528241, Lishui Town, Nanhai District, Guangdong, Foshan Province, Guangxi Industrial Park and 9 GUI Avenue Patentee before: Foshan ACL Lifeng Machine Tool Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20150718 |
|
| EXPY | Termination of patent right or utility model |