CN109263113B - Crank eccentricity adjusting device of press - Google Patents
Crank eccentricity adjusting device of press Download PDFInfo
- Publication number
- CN109263113B CN109263113B CN201811158360.9A CN201811158360A CN109263113B CN 109263113 B CN109263113 B CN 109263113B CN 201811158360 A CN201811158360 A CN 201811158360A CN 109263113 B CN109263113 B CN 109263113B
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- CN
- China
- Prior art keywords
- crank
- oil cavity
- closed oil
- supporting device
- press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Presses And Accessory Devices Thereof (AREA)
Abstract
A press crank eccentricity adjusting device comprises a crank, wherein two ends of the crank are connected to a crank mounting device through a supporting device and a bearing; the supporting device is provided with two plungers, the two plungers are connected with the crank and are matched with the crank to form a closed oil cavity A, C and a closed oil cavity B, D, the closed oil cavity A is communicated with the closed oil cavity B through a flow channel on the crank, and the closed oil cavity C is communicated with the closed oil cavity D through the flow channel on the crank; the end of the crank is provided with a flow distribution device, the flow distribution device is provided with two oil passages, and the two oil passages are respectively communicated with the closed oil cavity A, B and the closed oil cavity C, D; the outer side of the supporting device at the other end of the crank is connected with a driving device of the press machine, so that torque and rotating speed are transmitted to the crank, and the crank realizes rotary motion under the acting force; according to the invention, the relative position between the crank and the machine body can be adjusted by controlling the oil amount entering the sealed oil chambers A, B and C, D, so that the adjustment of the eccentric amount is realized.
Description
Technical Field
The invention belongs to the technical field of presses, and particularly relates to a crank eccentricity adjusting device of a press.
Background
Usually, the crank of the crank press is a single part, and the eccentricity of the crank press is not adjustable; or a mechanical adjustment mode is adopted, and in the adjustment process, due to the limitation of a mechanical structure, the eccentric position can be manually adjusted only, so that the operation efficiency is low.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a crank eccentricity adjusting device of a press, which can realize real-time adjustment of the crank eccentricity.
In order to achieve the purpose, the invention adopts the following technical scheme:
a press crank eccentricity adjusting device comprises a crank 5, wherein one end of the crank 5 is connected to an inner ring of a first bearing 21 through a first supporting device 4, the other end of the crank 5 is connected to an inner ring of a second bearing 22 through a second supporting device 6, and outer rings of the first bearing 21 and the second bearing 22 are connected to a crank mounting device 1;
the first supporting device 4 and the second supporting device 6 are respectively provided with two plungers, the two plungers are connected with the crank 5 and are matched with the crank 5 to form a closed oil cavity A, C and a closed oil cavity B, D, wherein the closed oil cavity A is communicated with the closed oil cavity B through a flow channel on the crank 5, and the closed oil cavity C is communicated with the closed oil cavity D through a flow channel on the crank 5;
the end of the crank 5 positioned at one end of the first supporting device 4 is provided with the flow distribution device 3, the flow distribution device 3 and the crank 5 are matched with each other and can rotate mutually, and the flow distribution device 3 is provided with two oil passages which are respectively communicated with the closed oil cavity A, B and the closed oil cavity C, D; the outside of the second support means 6 is connected to the drive means of the press.
Planes G1 and G2 are machined on two side faces of the second supporting device 6, corresponding planes F1 and F2 are also machined at the matching position of the crank 5 and the second supporting device 6, in the installation process, the four planes are matched with each other in pairs to transmit the torque and the rotating speed of the second supporting device 6 to the crank 5, and the crank 5 realizes the rotating motion under the acting force; similarly, the same principle plane exists at the matching position of the crank 5 and the first supporting device 4 for transmitting the torque and the rotating speed.
The invention has the beneficial effects that: by controlling the oil amount entering the sealed oil chambers A, B and C, D, the relative position between the crank and the machine body can be adjusted, and therefore the eccentricity can be adjusted.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a crank structure view of the present invention.
FIG. 3 is a side view of the crank of the present invention.
Fig. 4 is a partial view of a second support device of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the crank eccentricity adjusting device for the press comprises a crank 5, wherein one end of the crank 5 is connected to an inner ring of a first bearing 21 through a first supporting device 4, the other end of the crank 5 is connected to an inner ring of a second bearing 22 through a second supporting device 6, and outer rings of the first bearing 21 and the second bearing 22 are connected to a crank mounting device 1;
the first supporting device 4 and the second supporting device 6 are respectively provided with two plungers, the two plungers are connected with the crank 5 and are matched with the crank 5 to form a closed oil cavity A, C and a closed oil cavity B, D, wherein the closed oil cavity A is communicated with the closed oil cavity B through a flow channel on the crank 5, and the closed oil cavity C is communicated with the closed oil cavity D through a flow channel on the crank 5;
the end of the crank 5 positioned at one end of the first supporting device 4 is provided with the flow distribution device 3, the flow distribution device 3 and the crank 5 are matched with each other and can rotate mutually, the flow distribution device 3 does not rotate along with the crank 5, and the flow distribution device 3 is provided with two oil passages which are respectively communicated with the closed oil cavity A, B and the closed oil cavity C, D; the outside of the second support means 6 is connected to the drive means of the press.
Referring to fig. 2, 3 and 4, the second supporting device 6 is provided with planes G1 and G2 on two sides, and the crank 5 and the second supporting device 6 are provided with corresponding planes F1 and F2 at the matching positions, and during the installation process, the four planes are matched with each other in pairs to transmit the torque and the rotating speed of the second supporting device 6 to the crank 5, and the crank 5 realizes the rotating motion under the acting force; similarly, the same principle plane exists at the matching position of the crank 5 and the first supporting device 4 for transmitting the torque and the rotating speed.
The working principle of the invention is as follows: two oil paths of the flow distribution device 3 communicated with the outside are connected with a hydraulic proportional valve or a hydraulic servo valve, and when oil enters the closed oil cavities A and B, the closed oil cavities C and D discharge oil through the flow distribution device 3. When the oil storage amounts of the four closed oil chambers change, the position of the crank 5 relative to the crank mounting device 1 also changes, and the eccentricity of the crank 5 becomes larger or smaller, thereby completing the adjustment of the eccentricity of the crank 5.
Claims (2)
1. The utility model provides a press crank eccentricity adjustment device, includes crank (5), its characterized in that: one end of the crank (5) is connected to the inner ring of the first bearing (21) through the first supporting device (4), the other end of the crank (5) is connected to the inner ring of the second bearing (22) through the second supporting device (6), and the outer rings of the first bearing (21) and the second bearing (22) are connected to the crank mounting device (1);
the first supporting device (4) and the second supporting device (6) are respectively provided with two plungers, the two plungers are connected with the crank (5) and matched with the crank (5) to form a closed oil cavity A, a closed oil cavity C, a closed oil cavity B and a closed oil cavity D, the closed oil cavity A is communicated with the closed oil cavity B through a flow channel on the crank (5), and the closed oil cavity C is communicated with the closed oil cavity D through a flow channel on the crank (5);
a flow distribution device (3) is arranged at the end of a crank (5) positioned at one end of the first supporting device (4), the flow distribution device (3) and the crank (5) are matched with each other and can rotate mutually, and the flow distribution device (3) is provided with two oil ducts which are respectively communicated with a closed oil cavity A, a closed oil cavity B, a closed oil cavity C and a closed oil cavity D; the outside of the second support device (6) is connected with a driving device of the press.
2. The eccentric amount adjusting device of the press crank according to claim 1, wherein: a plane G1 and a plane G2 are machined on two side faces of the second supporting device (6), a corresponding plane F1 and a corresponding plane F2 are also machined at the matching position of the crank (5) and the second supporting device (6), in the installation process, the four planes are matched with each other in pairs, the torque and the rotating speed at the position of the second supporting device (6) are transmitted to the crank (5), and the crank (5) realizes the rotating motion under the acting force; similarly, the plane with the same principle is also arranged at the matching position of the crank (5) and the first supporting device (4) for transmitting the torque and the rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158360.9A CN109263113B (en) | 2018-09-30 | 2018-09-30 | Crank eccentricity adjusting device of press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158360.9A CN109263113B (en) | 2018-09-30 | 2018-09-30 | Crank eccentricity adjusting device of press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109263113A CN109263113A (en) | 2019-01-25 |
| CN109263113B true CN109263113B (en) | 2020-02-18 |
Family
ID=65195900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811158360.9A Active CN109263113B (en) | 2018-09-30 | 2018-09-30 | Crank eccentricity adjusting device of press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109263113B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3732646A1 (en) * | 1987-09-28 | 1989-04-13 | Kaiser Pressen Gmbh & Co Kg | Eccentric press with stroke adjustment |
| SU1497049A1 (en) * | 1987-12-10 | 1989-07-30 | Предприятие П/Я Ю-9788 | Mechanical prpess |
| US5865070A (en) * | 1996-10-28 | 1999-02-02 | The Minster Machine Company | Adjustable stroke connection |
| JP2001300798A (en) * | 2000-04-25 | 2001-10-30 | Aida Eng Ltd | Stroke adjusting device of press machine |
| JP2008240597A (en) * | 2007-03-27 | 2008-10-09 | Daikin Ind Ltd | Variable crank mechanism and scroll fluid machine having variable crank mechanism |
| CN101856880A (en) * | 2009-04-13 | 2010-10-13 | 孙冬梅 | Hydraulic lifting mechanism for slide block of pressure machine |
| CN201423771Y (en) * | 2009-06-23 | 2010-03-17 | 扬州锻压机床集团有限公司 | Press stroke adjusting device |
| CN205474735U (en) * | 2015-12-31 | 2016-08-17 | 长安大学 | Stepless amplitude modulation device of vibrated roller liquid accuse |
| CN107588088A (en) * | 2017-11-02 | 2018-01-16 | 吉林大学 | A kind of variable bent axle of crank length |
-
2018
- 2018-09-30 CN CN201811158360.9A patent/CN109263113B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109263113A (en) | 2019-01-25 |
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