CN210759422U - Thin oil sealing structure of mechanical press - Google Patents
Thin oil sealing structure of mechanical press Download PDFInfo
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- CN210759422U CN210759422U CN201921258807.XU CN201921258807U CN210759422U CN 210759422 U CN210759422 U CN 210759422U CN 201921258807 U CN201921258807 U CN 201921258807U CN 210759422 U CN210759422 U CN 210759422U
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Abstract
The utility model discloses a mechanical press thin oil seal structure, the uninstallation cover is located on the flywheel shaft through first bearing housing, the flywheel shaft is located to the oil break ring cover, be equipped with O type circle one between the connection face of oil break ring and flywheel shaft, the one end of oil break ring supports with the inner circle of first bearing one end and closes, the flywheel passes through the second bearing and is connected with the outer lane of uninstallation cover, the axle receives the gland to be connected with flywheel one end in oil break ring outer lane department, the outer lane of axle pressure receiving lid one end and second bearing one end supports to close, the axle is equipped with O type circle two between the connection face of gland and flywheel, it is connected with the outer lane of uninstallation cover in the other end department of flywheel to return oil dish. Through reducing the distance of axle pressurized cover hole and fuel cut-off ring outer lane, prevent throwing away of thin oil to the at utmost, guarantee that unnecessary thin oil can get back to fast in the oil return dish through the oil return passageway two of flywheel, O type circle one and O type circle two all keep quiet sealing state, have improved the life and the stability of O type circle one and O type circle two, fully guarantee the sealed effect of thin oil.
Description
Technical Field
The utility model relates to a seal structure especially relates to a mechanical press thin oil seal structure.
Background
Bearings are widely used in mechanical presses and have become a very important mechanical component. The performance of one mechanical press can not be fully exerted, and the function of the bearing is not available. Good lubrication is a necessary condition for ensuring the normal operation of the bearing, so that the machine tool can be maintained in a good use state, the service life is prolonged, and faults are reduced. The lubrication is divided into thin oil lubrication and thick oil lubrication, and the lubricating oil adopted for thick oil lubrication on a common machine tool is lubricating grease which has low flowability, so that the sealing is simple and the sealing difficulty is low; however, the thin oil lubrication on the machine tool mainly adopts an oil separator for circulating oil supply, and the lubricating oil has high fluidity, complex sealing, high requirement and high difficulty.
The thin oil sealing mode of many mechanical presses is the cooperation use of rotary seal circle and O type circle sealed, and they are all higher to the processing axiality requirement of part, part surface roughness requirement, the installation technology level requirement, and when arbitrary any does not reach the requirement, all can lead to rotary seal circle and O type circle sealed effect unsatisfactory and the phenomenon that appears the oil leak. In addition, because the O-shaped sealing ring and the rotary sealing ring are made of rubber materials, the temperature of the sealing ring is increased due to friction generated when the parts rotate, so that the service life of the sealing ring is influenced due to aging of rubber, and the sealing ring is worn and failed, therefore, the O-shaped sealing ring and the rotary sealing ring need to be regularly checked and replaced, and time and labor are wasted.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: to the above problem, the utility model aims at providing a mechanical press thin oil seal structure, security, stability, reliability and the life that reinforcing thin oil is sealed.
The technical scheme is as follows: a thin oil sealing structure of a mechanical press comprises a flywheel, a flywheel shaft, a shaft pressing cover, an oil-breaking ring, a first bearing, a second bearing, an unloading sleeve and an oil return plate, wherein the unloading sleeve is arranged on the flywheel shaft from one end of the flywheel shaft through the first bearing sleeve, the oil-breaking ring is fixed on the flywheel shaft from the other end of the flywheel shaft through the sleeve, an O-shaped ring I is arranged between the oil-breaking ring and the connecting surface of the flywheel shaft, one end of the oil-breaking ring is abutted with an inner ring at one end of the first bearing, the flywheel is connected with an outer ring of the unloading sleeve through the second bearing, the shaft pressing cover is arranged on an outer ring of the oil-breaking ring in a sleeved mode and is fixed with one end of the flywheel, one end of the shaft pressing cover is abutted with an outer ring at one end of the second bearing, an O-shaped ring II is arranged between the shaft pressing cover and the connecting surface of the flywheel, and the oil return plate is connected, the shaft compression cover is internally provided with a plurality of mutually communicated oil return channels I, the flywheel is internally provided with an oil return channel II, one end of the oil return channel II is communicated with one of the oil return channels I, and the other end of the oil return channel II is communicated with the oil return disc.
After the lubricating system starts to work, thin oil enters through the oil hole in the unloading sleeve to respectively lubricate the first bearing and the second bearing, the motor drives the flywheel to rotate after the machine tool is started, the flywheel is fixed with the shaft pressed cover, one end of the shaft pressed cover presses the outer ring of the second bearing, the flywheel drives the outer ring of the second bearing and the shaft pressed cover to rotate together after the flywheel rotates, the flywheel, the outer ring of the second bearing and the bearing pressed cover are in a relatively static state, and the O-shaped ring II between the shaft pressed cover and the flywheel is in a static sealing state; the oil-break ring is fixed with the flywheel shaft, one end of the oil-break ring compresses the inner ring of the first bearing, the oil-break ring is kept in a relatively static state between the first bearing and the flywheel shaft, the first O-shaped ring between the inner hole of the oil-break ring and the flywheel shaft is also in a static sealing state, the first O-shaped ring and the second O-shaped ring are both kept in a static sealing state, the sealing performance can be ensured, the service life and the stability of the first O-shaped ring and the second O-shaped ring are prolonged, in addition, the oil-break ring is not required to be matched with a rotary sealing ring for use, the processing coaxiality requirement of parts is met, the surface roughness requirement of the parts is met, the. Because the distance between the outer ring of the oil-break ring and the inner hole of the shaft pressed cover is very small, a large amount of redundant thin oil can flow back to the oil return plate from the first oil return channel of the shaft pressed cover through the oil return channel of the flywheel, and therefore the structure can fully ensure the sealing effect of the thin oil.
Furthermore, a groove angle is arranged in the cover of the shaft pressed cover, at least one conical ring groove is further arranged on the inner ring of the shaft pressed cover, and an opening of the conical ring groove is opposite to the outer ring of the oil-breaking ring.
Most preferably, the angle of the groove angle is 40 to 50 °.
Since a slight gap exists between the outer ring of the oil cutoff ring and the inner ring of the shaft pressure receiving cover, a small amount of thin oil may leak from the gap, and by providing the groove angle, the leaked thin oil is blocked by the groove angle and accumulated in the groove angle, thereby further enhancing the sealing effect and preventing oil leakage. In order to further prevent a small amount of thin oil from being thrown out beyond the groove angle, the conical ring groove is arranged to form two barriers, so that the thin oil is fully prevented from leaking in a cavity of the shaft gland.
In addition, set up ditch angle and toper annular on the axle pressurized lid, can avoid the use of rotary seal circle, also can avoid because of the poor problem that the low life-span of rotary seal circle that leads to of part processing axiality, roughness difference, assembly level, then avoid sealed not good or the emergence of oil leak phenomenon.
Furthermore, the oil-breaking ring is fixed with the outer ring of the flywheel shaft through a flat key.
Through flat key circumference location, guaranteed the relative stillness of oil-break ring and flywheel axle, O type circle just can maintain quiet sealing state to guarantee the life of O type circle to the at utmost, prevent to lead to the emergence of oil leak phenomenon because O type circle damages.
Furthermore, a plurality of rib plates are uniformly distributed on the outer end face of the shaft pressed cover along the circumferential direction, and the rib plates are arranged in a radially rotating and offsetting mode along the shaft pressed cover.
Preferably, the rotation offset angle of the rib plate is 20-25 degrees.
After the flywheel drives the shaft to rotate by the gland, the rib plate rotates to generate wind power to form a heat dissipation function, so that the temperature of the cylindrical roller bearing and the conical roller bearing is reduced, and the service life of the bearing is prolonged.
Furthermore, the structure also comprises a screw plug which is arranged on the peripheral surface of the shaft pressing cover and plugs one port of one of the oil return channels I.
Furthermore, a third O-shaped ring is arranged at the communication position of the second oil return channel and one of the first oil return channels.
Most preferably, the first bearing is a cylindrical roller bearing.
Preferably, two second bearings are arranged between the connecting surface of the flywheel and the unloading sleeve at intervals, and the second bearings are tapered roller bearings.
Has the advantages that: compared with the prior art, the utility model has the advantages that: through reducing the distance that axle pressurized cover hole and oil break ring outer lane, when guaranteeing that both normal work do not interfere with each other, prevent throwing away of thin oil to the at utmost, guarantee that unnecessary thin oil can get back to fast in the oil return dish through the oil return passageway two of flywheel, O type circle is all kept static seal state with O type circle two, can guarantee sealing performance to the life and the stability of O type circle and O type circle are improved, fully guarantee the sealed effect of thin oil.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view I of FIG. 1;
FIG. 3 is an enlarged view II of FIG. 1;
FIG. 4 is an enlarged view III of FIG. 1;
FIG. 5 is an enlarged view IV of FIG. 1;
fig. 6 is a view of the shaft gland of fig. 1 in the direction of a.
Detailed Description
The invention will be further elucidated with reference to the drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
A thin oil sealing structure of a mechanical press is shown in figures 1-6 and comprises a flywheel 1, a flywheel shaft 2, a shaft pressure bearing cover 3, an oil breaking ring 4, a first bearing 5, a second bearing 6, an unloading sleeve 7, an oil return disc 8, a first O-shaped ring 9, a second O-shaped ring 10, a flat key 11, a rib plate 12, a plug screw 13 and a third O-shaped ring 14, wherein the first bearing 5 is a cylindrical roller bearing, and the second bearing 6 is a tapered roller bearing.
The unloading sleeve 7 is sleeved on the flywheel shaft 2 through the first bearing 5 from one end of the flywheel shaft 2, the oil-cut ring 4 is sleeved and fixed on the flywheel shaft 2 through the flat key 11 from the other end of the flywheel shaft 2, an O-shaped ring 9 is arranged between the oil-cut ring 4 and the connection surface of the flywheel shaft 2, one end of the oil-cut ring 4 is abutted to the inner ring of one end of the first bearing 5, the flywheel 1 is connected with the outer ring of the unloading sleeve 7 through the second bearing 6, and the second bearing 6 is arranged between the connection surface of the flywheel 1 and the unloading sleeve 7 at intervals.
The shaft pressed cover 3 is sleeved on the outer ring of the oil break ring 4 and fixed with one end of the flywheel 1 through a bolt, a small gap Z is arranged between the inner ring of the shaft pressed cover 3 and the outer ring of the oil break ring 4, the size of the gap Z is about 1mm, a groove angle 302 is arranged in the cover of the shaft pressed cover 3, the angle of the groove angle 302 is 40-50 degrees, the angle of 45 degrees is the best, at least one conical ring groove 303 is further arranged on the inner ring of the shaft pressed cover 3, the opening of the conical ring groove 303 is opposite to the outer ring of the oil breaking ring 4, the width of the conical ring groove 303 is gradually reduced from the opening along the depth direction, one end of the shaft pressed cover 3 is abutted with the outer ring of one end of the second bearing 6, an O-shaped ring II 10 is arranged between the connecting surface of the shaft pressed cover 3 and the flywheel 1, a plurality of rib plates 12 are uniformly distributed on the outer end surface of the shaft pressed cover 3 along the circumferential direction of the outer end surface, the rib plates 12 are arranged in a radial rotating offset mode along the shaft pressed cover 3, and the rotating offset angle of the rib plates 12.
The oil return disc 8 is connected with the outer ring of the unloading sleeve 7 at the other end of the flywheel 1, an oil return opening Y is formed in the oil return disc 8, an oil hole X is formed in the unloading sleeve 7, a plurality of mutually communicated oil return channels I301 are formed in the shaft pressing cover 3, an oil return channel II 101 is formed in the flywheel 1, one end of the oil return channel II 101 is communicated with one oil return channel I301, an O-shaped ring III 14 is arranged at the communication position of the oil return channel I and the oil return disc I, the other end of the oil return channel I is communicated with the oil return disc 8, and the screw plug 13 is installed on the outer peripheral face of the shaft pressing cover.
After the lubricating system starts to work, thin oil enters through the oil hole X on the unloading sleeve to respectively lubricate the first bearing and the second bearing, the motor drives the flywheel to rotate after the machine tool starts, the flywheel and the flywheel are fixed due to the bearing cover, one end of the bearing cover presses the outer ring of the second bearing, the flywheel drives the outer ring of the second bearing and the bearing cover to rotate together after rotating, the flywheel, the outer ring of the second bearing and the bearing cover are in a relatively static state at the moment, and the O-shaped ring II between the bearing cover and the flywheel is in a static sealing state; the oil-break ring is fixed with the flywheel shaft, one end of the oil-break ring compresses the inner ring of the first bearing, the oil-break ring is kept in a relatively static state between the first bearing and the flywheel shaft, the first O-shaped ring between the inner hole of the oil-break ring and the flywheel shaft is also in a static sealing state, the first O-shaped ring and the second O-shaped ring are both kept in a static sealing state, the sealing performance can be ensured, the service life and the stability of the first O-shaped ring and the second O-shaped ring are prolonged, in addition, the oil-break ring is not required to be matched with a rotary sealing ring for use, the processing coaxiality requirement of parts is met, the surface roughness requirement of the parts is met, the. Because the distance between the outer ring of the oil-break ring and the inner hole of the shaft pressed cover is very small, a large amount of redundant thin oil can flow back to the oil return plate from the first oil return channel of the shaft pressed cover through the oil return channel of the flywheel.
Since a slight gap Z exists between the outer ring of the oil cutoff ring and the inner ring of the shaft pressure receiving cover, a small amount of thin oil may leak from the gap, and in order to further prevent the occurrence of such a slight oil leakage possibility, by providing the groove corners, the leaked thin oil is blocked by the groove corners and is accumulated in the groove corners, thereby further enhancing the sealing effect and preventing oil leakage. In order to further prevent a small amount of thin oil from being thrown out beyond the groove angle, the conical ring groove is arranged to form two barriers, so that the thin oil is fully prevented from leaking in a cavity of the shaft gland.
In addition, set up ditch angle and toper annular on the axle pressurized lid, can avoid the use of rotary seal circle, also can avoid because of the poor problem that the low life-span of rotary seal circle that leads to of part processing axiality, roughness difference, assembly level, then avoid sealed not good or the emergence of oil leak phenomenon.
After the flywheel drives the shaft to rotate by the gland, the rib plate rotates to generate wind power to form a heat dissipation function, so that the temperature of the cylindrical roller bearing and the conical roller bearing is reduced, and the service life of the bearing is prolonged.
The distance between the inner hole of the shaft compression cover and the outer ring of the oil-break ring is reduced to enable the clearance Z between the inner hole of the shaft compression cover and the outer ring of the oil-break ring to be about 1mm, so that the thin oil is prevented from being thrown out to the maximum extent while the normal work of the shaft compression cover and the oil-break ring is ensured to be not interfered with each other, and the redundant thin oil is ensured to quickly return to the oil return disc through the oil return channel II of the flywheel to form a sealed first defense line; the first O-shaped ring and the second O-shaped ring are kept in a static sealing state, so that the sealing performance can be ensured, the sealing effect is improved again, a second sealing line and a third sealing line are formed, and the service life and the stability of the first O-shaped ring and the second O-shaped ring are also improved; the shaft pressure cover is provided with the groove angle and the conical ring groove, so that two kinds of barriers can be formed for thrown thin oil, a fourth and a fifth sealing lines are formed, each sealing line is mutually matched, the sealing performance is fully ensured, and the phenomenon of thin oil leakage is avoided.
Claims (10)
1. The utility model provides a mechanical press thin oil seal structure which characterized in that: comprises a flywheel (1), a flywheel shaft (2), a shaft pressed cover (3), an oil breaking ring (4), a first bearing (5), a second bearing (6), an unloading sleeve (7) and an oil return plate (8), wherein the unloading sleeve (7) is arranged on the flywheel shaft (2) from one end of the flywheel shaft (2) through the first bearing (5) in a sleeved mode, the oil breaking ring (4) is arranged on the flywheel shaft (2) from the other end of the flywheel shaft (2) in a sleeved mode, an O-shaped ring (9) is arranged between the oil breaking ring (4) and the connecting surface of the flywheel shaft (2), one end of the oil breaking ring (4) is abutted to the inner ring at one end of the first bearing (5), the flywheel (1) is connected with the outer ring of the unloading sleeve (7) through the second bearing (6), the shaft pressed cover (3) is arranged on the outer ring of the oil breaking ring (4) and fixed with one end of the flywheel (1), the axle receives gland (3) one end with the outer lane of second bearing (6) one end is to closing, the axle receive gland (3) with be equipped with O type circle two (10) between the connection face of flywheel (1), it is in to return oil dish (8) the other end department of flywheel (1) with the outer lane of uninstallation cover (7) is connected, the axle receives to have seted up many oil return passageway (301) that communicate each other in gland (3), oil return passageway two (101) have been seted up in flywheel (1), oil return passageway two (101) one end and one of them oil return passageway (301) intercommunication, the other end with it communicates to return oil dish (8).
2. The thin oil sealing structure of the mechanical press according to claim 1, wherein: the shaft is equipped with ditch angle (302) in the lid of pressed cover (3), still be equipped with a toper annular (303) on the inner race of pressed cover (3) of shaft at least, the opening of toper annular (303) with the outer lane of disconnected oil ring (4) is relative.
3. The thin oil sealing structure of the mechanical press according to claim 2, wherein: the groove angle (302) is 40-50 degrees.
4. The thin oil sealing structure of the mechanical press according to claim 1, wherein: the oil-cutting ring (4) is fixed with the outer ring of the flywheel shaft (2) through a flat key (11).
5. The thin oil sealing structure of the mechanical press according to claim 1, wherein: a plurality of rib plates (12) are uniformly distributed on the outer end face of the shaft pressed cover (3) along the circumferential direction, and the rib plates (12) are arranged in a radial rotating and offsetting mode along the shaft pressed cover (3).
6. The thin oil sealing structure of the mechanical press machine according to claim 5, characterized in that: the rotation offset angle of the rib plate (12) is 20-25 degrees.
7. The thin oil sealing structure of the mechanical press according to claim 1, wherein: the oil return device is characterized by further comprising a screw plug (13), wherein the screw plug (13) is installed on the outer peripheral surface of the shaft pressure bearing cover (3) and plugs one port of one oil return channel I (301).
8. The thin oil sealing structure of the mechanical press according to claim 1, wherein: and a third O-shaped ring (14) is arranged at the communication position of the second oil return channel (101) and one of the first oil return channels (301).
9. The thin oil sealing structure of the mechanical press according to claim 1, wherein: the first bearing (5) is a cylindrical roller bearing.
10. The thin oil sealing structure of the mechanical press according to claim 1, wherein: two second bearings (6) are arranged between the connection surface of the flywheel (1) and the unloading sleeve (7) at intervals, and the second bearings (6) are tapered roller bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258807.XU CN210759422U (en) | 2019-08-05 | 2019-08-05 | Thin oil sealing structure of mechanical press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258807.XU CN210759422U (en) | 2019-08-05 | 2019-08-05 | Thin oil sealing structure of mechanical press |
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| CN210759422U true CN210759422U (en) | 2020-06-16 |
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| CN201921258807.XU Active CN210759422U (en) | 2019-08-05 | 2019-08-05 | Thin oil sealing structure of mechanical press |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421888A (en) * | 2019-08-05 | 2019-11-08 | 沃得精机(中国)有限公司 | A kind of mechanical press thin oil sealing structure |
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2019
- 2019-08-05 CN CN201921258807.XU patent/CN210759422U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421888A (en) * | 2019-08-05 | 2019-11-08 | 沃得精机(中国)有限公司 | A kind of mechanical press thin oil sealing structure |
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