CN213017322U

CN213017322U - Pre-molded bearing box with exhaust oil spilling and multi-point oiling lubricating system

Info

Publication number: CN213017322U
Application number: CN202021463668.7U
Authority: CN
Inventors: 卢华乔; 吴永庆
Original assignee: Ningbo Smanl Electric Co ltd
Current assignee: Ningbo Smanl Electric Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-04-20
Anticipated expiration: 2030-07-22

Abstract

The utility model relates to a bearing box field, the easy overheated difficult problem that leads to refueling of bearing box to the multiaxis bearing, provide a take exhaust oil spilling and multiple spot to refuel lubricating system's mould bearing box in advance, including the drive shaft, mould the seat in advance, bearing group, end cover and protecgulum, the drive shaft is located moulds the seat in advance, the both ends at moulding the seat in advance are installed respectively to end cover and protecgulum, the drive shaft both ends run through end cover and protecgulum respectively, bearing group includes a plurality of bearings, the bearing housing is established in the drive shaft, and be located between end cover and the protecgulum, be equipped with the skeleton oil blanket between drive shaft and the end cover, also be equipped with the skeleton oil blanket between drive shaft and the protecgulum, make the drive shaft, mould the seat in advance, the end cover, form confined oil storage chamber between protecgulum and the skeleton oil blanket, oil storage chamber below is. This practicality sets up a plurality of inlet ports in oil storage chamber below, sets up exhaust oil spilling hole above the bearing box body, has functions such as exhaust, oil spilling, heat dissipation.

Description

Pre-molded bearing box with exhaust oil spilling and multi-point oiling lubricating system

Technical Field

The utility model belongs to the technical field of the bearing box and specifically relates to a take exhaust oil spilling and multiple spot oiling lubricating system's bearing box of moulding in advance is related to.

Background

An injection molding machine capable of heating plastic to inject molten plastic to fill a mold cavity by applying high pressure to the molten plastic is a main molding device for making plastic products of various shapes from thermoplastic plastics or thermosetting plastics by using a plastic molding mold. The injection bearing box on the injection molding machine is a main mechanism of the power transmission device of the injection molding machine and has the functions of connection, support, limit and positioning.

The bearing box is internally provided with a rotating shaft, a bearing and an oil storage cavity, lubricating oil is filled in the oil storage cavity for lubricating the bearing, and the oil storage cavity is generally a closed space for preventing oil leakage. The pre-molding bearing box usually needs a plurality of bearings, the number of the bearings is large, more heat is generated during high-speed operation, the heat can be accumulated in the bearing box, so that the temperature of lubricating oil is increased and even the lubricating oil is vaporized, the lubricating oil occupies a part of space after being vaporized, and high pressure is formed in an oil storage cavity, so that the oiling is difficult; if the bearing overheats work for a long time, lubricating oil can reduce gradually, and the lubricated not enough performance of bearing can descend, finally leads to whole equipment to damage, not only influences production efficiency, still causes economic loss.

Therefore, a heat-radiating bearing box capable of solving the problem that the bearing box is easy to overheat during working is invented, for example, the 'heat-radiating bearing box' disclosed in the Chinese patent literature, the publication No. CN205101278U includes a bearing box body, a main shaft, bearings and bearing glands, the main shaft is arranged in the middle of the bearing box body, the bearing glands are arranged at two ends of the bearing box body, the main shaft penetrates through the axes of the bearing box body and the bearing glands, the bearings are arranged at the inner sides of the bearing glands and sleeved on the main shaft, the bearing box body is penetrated with heat pipes, the heat pipe evaporation section is positioned in a cavity of the bearing box body, the heat pipe condensation section is positioned at the outer side of the bearing box body, the heat pipe evaporation section and the heat pipe condensation section are connected. The utility model overcomes prior art's is not enough, through set up the heat pipe in the bearing box, utilizes the heat pipe evaporation zone to absorb the heat of lubricating oil in the cavity, and the heat pipe condensation zone emits the heat to utilize the fan to strengthen the heat dissipation of heat pipe condensation zone, the fan carries out the speed governing operation according to the lubricating oil temperature in the cavity, plays energy-conserving effect. However, the heat pipe is expensive, and the steps of mounting and connecting the heat pipe and the bearing housing are complicated. Accordingly, an ideal technical structure is needed to solve the above problems.

Disclosure of Invention

The utility model discloses an overcome the easy overheated problem that leads to refueling difficulty of bearing box of multiaxis bearing, provide a take exhaust oil spilling and multipoint oiling lubricating system's the bearing box of moulding in advance, set up a plurality of inlet ports below the oil storage chamber, set up exhaust oil spilling hole above the bearing box body, have functions such as exhaust, oil spilling, heat dissipation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a take exhaust oil spilling and multiple spot oiling lubricating system's bearing box of moulding in advance, including the drive shaft, mould the seat in advance, bearing group, end cover and protecgulum, the drive shaft is located moulds the seat in advance, the both ends at moulding the seat in advance are installed respectively to end cover and protecgulum, end cover and protecgulum are run through respectively to the drive shaft both ends, bearing group includes a plurality of bearings, the bearing housing is established in the drive shaft, and be located between end cover and the protecgulum, be equipped with the skeleton oil blanket between drive shaft and the end cover, also be equipped with the skeleton oil blanket between drive shaft and the protecgulum, make the drive shaft, mould the seat in advance, the end cover, form confined oil storage chamber between protecgulum and the skeleton oil blanket, oil storage chamber below is equipped.

An enclosed oil storage cavity is formed among the driving shaft, the pre-plastic seat, the end cover, the front cover and the framework oil seal, and an exhaust oil overflow hole and an oil inlet hole which are communicated with the outside are respectively arranged above and below the oil storage cavity. The exhaust oil spill hole has the functions of exhausting, spilling oil, dissipating heat and the like. The inlet port sets up under, and the setting of exhaust oil overflow hole is last because the density of oil is greater than the air, and oil gets into from the below and more does benefit to the air and discharges from the top, if the vaporization after having the heating, also is favorable to discharging it from the top with the same reason. The exhaust oil spilling hole with the exhaust and oil spilling functions can avoid the difficulty in oiling caused by high pressure formed in the oil storage cavity, is favorable for timely heat dissipation, and avoids the influence on the service life caused by long-term overheat work of the bearing box. Because the increase of bearing quantity makes the oil storage chamber volume grow, set up the advantage that a plurality of inlet ports compare in single inlet port this moment: on the one hand can let oil be full of the oil storage chamber fast, and on the other hand, the increase of inlet port quantity can reduce the aperture of inlet port, and the pressure of the oil outwards in the batch oil tank can disperse different positions moreover, and the pressure of refueling in the batch oil tank reduces greatly.

Preferably, the inner wall of the premolded base or the side surface of the driving shaft is provided with a raised ring. In order to prevent the bearing from slipping in the axial direction of the drive shaft, the bearing needs to be fixed. The bearing can be separated from each other by arranging the convex ring on the inner wall of the pre-molding seat or the side surface of the driving shaft, heat accumulation is reduced, the pre-molding seat and the driving shaft are in contact with the outside, heat dissipation is convenient, and the bearing fixing device can be used for fixing the bearing.

Preferably, the bearing group comprises a bearing I, a bearing II, a bearing III and a bearing IV, the inner wall of the pre-molded base and the side surface of the driving shaft are respectively provided with a convex ring, the bearing I and the bearing II are positioned between the end cover and the convex ring of the pre-molded base, the bearing III is limited between the convex ring of the pre-molded base and the convex ring of the driving shaft, and the bearing IV is limited between the convex ring of the driving shaft and the front cover. The bearing I and the bearing II are located on two sides and respectively support two ends of the driving shaft, and the bearing II and the bearing III support the middle part of the driving shaft, so that the driving shaft is high in stability during rotation, small in friction loss and small in generated heat.

Preferably, the number of the oil inlets is 3, the first oil inlet is formed in the pre-plastic seat between the end cover and the protruding ring of the pre-plastic seat, the second oil inlet is formed between the protruding ring of the pre-plastic seat and the protruding ring of the driving shaft, and the third oil inlet is formed in the front cover between the protruding ring of the driving shaft and the end face of the front cover. The position of the oil inlet hole is reasonably arranged aiming at the bearing, and each bearing can be guaranteed to be lubricated.

Preferably, a sealing ring is further arranged between the driving shaft and the bearings on the two sides. The leakproofness of oil storage chamber is further increased to the sealing washer, prevents that oil from revealing.

Preferably, the exhaust oil spilling hole is provided with an exhaust oil spilling connector, and the exhaust oil spilling connector is provided with a through hole which penetrates axially. After the vaporized lubricating oil is discharged from the exhaust oil overflow hole, if the vaporized lubricating oil is not treated, the vaporized lubricating oil is condensed into liquid outside and is attached to the surface of equipment, so that oil pollution is caused to a unit, and the consumption of the lubricating oil in the bearing box is aggravated. In addition, if external pollutants enter the bearing box, the lubricating oil is deteriorated or internal parts are abraded, and the service life of the bearing is influenced. Therefore, the exhaust oil spilling port is arranged at the exhaust oil spilling position, a pipeline and the like can be arranged on the exhaust oil spilling port to collect and recycle the discharged lubricating oil, and meanwhile, pollutants are prevented from entering the oil storage tank.

Preferably, the exhaust oil spilling connector comprises a bulging part located in the middle and a contact part located at the bottom, the contact part is located in the exhaust oil spilling hole and is in interference connection with the exhaust oil spilling hole, and the width of the bulging part is larger than that of the exhaust oil spilling hole. The interference connection is firm and the sealing performance is good; the width of the swelling part is larger than that of the oil inlet hole, and the swelling part plays a role in limiting and positioning. The expansion part is higher than the exhaust oil overflow hole, so that on one hand, condensation opportunity can be provided for vaporized lubricating oil, the vaporized lubricating oil flows back into the oil storage cavity for continuous use if being condensed in the expansion part, on the other hand, the oil overflow risk can be reduced, and the overflowed oil can flow back into the oil storage cavity as long as the overflowed oil does not exceed the upper end of the expansion part.

Therefore, the utility model discloses following beneficial effect has: (1) the oil storage cavity is provided with a plurality of oil inlet holes below, so that the oil storage cavity can be quickly filled with oil, the number of the oil inlet holes is increased, the aperture of the oil inlet holes can be reduced, the outward pressure of the oil in the oil storage tank can be dispersed to different positions, and the pressure for filling oil in the oil storage tank is greatly reduced; (2) the upper part of the bearing box body is provided with an exhaust oil overflow hole which has the functions of exhausting, overflowing oil, radiating and the like; (3) the inner wall of the pre-molded seat or the side surface of the driving shaft is provided with a convex ring, so that the bearings are separated from each other, heat accumulation is reduced, and the bearing fixing device can be used for fixing the bearings.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

In the figure: 1. the device comprises a driving shaft, 11, a driving shaft convex ring, 12, a sealing ring, 2, a pre-plastic seat, 21, a pre-plastic seat convex ring, 3, an end cover, 4, a front cover, 5, a framework oil seal, 6, a bearing group, 61, a first bearing, 62, a second bearing, 63, a third bearing, 64, a fourth bearing, 7, an oil inlet hole, 71, a first oil inlet hole, 72, a second oil inlet hole, 73, a third oil inlet hole, 8, an exhaust oil overflow hole, 9, an exhaust oil overflow interface, 91, a swelling part, 92 and a contact part.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-3, a pre-molding bearing box with exhaust oil spilling and multi-point oiling lubricating system comprises a driving shaft 1, a pre-molding base 2, a bearing group 6, an end cover 3 and a front cover 4, wherein the driving shaft 1 is located in the pre-molding base 2, the end cover 3 and the front cover 4 are respectively installed at two ends of the pre-molding base 2, two ends of the driving shaft 1 respectively penetrate through the end cover 3 and the front cover 4, the bearing group 6 is composed of 4 bearings, the bearing sleeve is sleeved on the driving shaft 1 and located between the end cover 3 and the front cover 4, a framework oil seal 5 is arranged between the driving shaft 1 and the end cover 3, a framework oil seal 5 is also arranged between the driving shaft 1 and the front cover 4, so that a closed oil storage cavity is formed between the driving shaft 1, the pre-molding base 2, the end cover 3, the front cover 4 and the

framework oil seal

5, 3 oil inlet holes 7 communicated with the outside are arranged. The exhaust oil overflow hole 8 can avoid the difficulty in oiling caused by high pressure formed in the oil storage cavity, is favorable for timely heat dissipation, and avoids the influence on the service life of the bearing box due to long-term overheating work. The oil inlet hole 7 is arranged at the lower part, and the exhaust oil overflow hole 8 is arranged at the upper part, which is beneficial to exhaust. Because the increase of bearing quantity makes the oil storage chamber volume grow, set up a plurality of inlet ports 7 this moment and compare in single inlet port 7's advantage: on the one hand can let oil be full of the oil storage chamber fast, and on the other hand, the increase of inlet port 7 quantity can reduce the aperture of inlet port 7, and the pressure of the oil outwards in the batch oil tank can disperse different positions moreover, and the pressure of refueling in the batch oil tank reduces greatly.

The bearing group 6 is composed of a first bearing 61, a second bearing 62, a third bearing 63 and a fourth bearing 64, the inner wall of the pre-plastic seat 2 and the side surface of the driving shaft 1 are respectively provided with a convex ring, the first bearing 61 and the second bearing 62 are positioned between the end cover 3 and the convex ring 21 of the pre-plastic seat, the third bearing 63 is limited between the convex ring 21 of the pre-plastic seat and the convex ring 11 of the driving shaft, and the fourth bearing 64 is limited between the convex ring 11 of the driving shaft and the front cover 4. The first bearing 61 and the fourth bearing 64 are positioned on two sides and respectively play a supporting role for two ends of the driving shaft 1, and the second bearing 62 and the third bearing 63 play a supporting role for the middle part of the driving shaft 1, so that the driving shaft 1 has high stability during rotation, small friction loss and small generated heat; 2 inner walls of pre-plastic seat or 1 side of drive shaft set up protruding ring and can separate the bearing each other, reduce the heat and gather, pre-plastic seat 2 and drive shaft 1 and external contact, the heat dissipation is convenient, can also be used for fixing bearing. In order to further increase the sealing performance of the oil storage cavity, a sealing ring 12 is arranged between the driving shaft 1 and the first bearing 61. Corresponding to the position of bearing, 3 inlet ports 7 have been set up: the premolded base 2 is provided with a first oil inlet 71 between the end cover 3 and the premolded base raised ring 21, and the first oil inlet corresponds to the first bearing 61 and the second bearing 62; the pre-molding seat 2 is provided with a second oil inlet 72 between the pre-molding seat bulge ring 21 and the driving shaft bulge ring 11, and corresponds to the third bearing 63; the front cover 4 is provided with an oil inlet hole three 73, corresponding to the bearing four 64, between the drive shaft boss ring 11 and the end surface of the front cover 4. The exhaust oil spill holes 8 are located on the left side of all the oil inlet holes 7, and the advantage of being arranged far away from the oil inlet holes 7 is that the risk of oil spill can be reduced.

An exhaust oil spilling connector 9 is installed at the exhaust oil spilling hole 8, and the exhaust oil spilling connector 9 is provided with a through hole which penetrates in the axial direction. The exhaust oil spill port 9 comprises a bulging part 91 in the middle and a contact part 92 at the bottom, the contact part 92 is located in the exhaust oil spill hole 8 and is in interference connection with the exhaust oil spill hole 8, and the width of the bulging part 91 is larger than that of the exhaust oil spill hole 8. The interference connection is firm and the sealing performance is good; the width of the bulging part 91 is larger than that of the oil inlet hole 7, and the bulging part plays a role in limiting and positioning. The swelling part 91 is higher than the exhaust oil overflow hole 8, a pipeline and the like are convenient to install, the discharged lubricating oil is collected and recycled, the vaporized lubricating oil can be condensed, if the vaporized lubricating oil can be condensed in the swelling part 91, the vaporized lubricating oil flows back to the oil storage cavity for continuous use, the oil overflow risk can be reduced, and the overflowed oil can flow back to the oil storage cavity as long as the overflowed oil does not exceed the upper end of the swelling part 91.

Claims

1. A pre-molding bearing box with an exhaust oil spilling and multi-point oiling lubricating system comprises a driving shaft (1), a pre-molding base (2), a bearing group (6), an end cover (3) and a front cover (4), wherein the driving shaft (1) is positioned in the pre-molding base (2), the end cover (3) and the front cover (4) are respectively installed at two ends of the pre-molding base (2), two ends of the driving shaft (1) respectively penetrate through the end cover (3) and the front cover (4), the bearing group comprises a plurality of bearings, the bearings are sleeved on the driving shaft (1) and positioned between the end cover (3) and the front cover (4), a framework oil seal (5) is arranged between the driving shaft (1) and the end cover (3), and a framework oil seal (5) is also arranged between the driving shaft (1) and the front cover (4), so that a closed oil storage cavity is formed between the driving shaft (1), the pre-molding base (2), the end cover (3), the front cover, a plurality of oil inlet holes (7) communicated with the outside are arranged below the oil storage cavity, and an exhaust oil overflow hole (8) communicated with the outside is arranged above the oil storage cavity.

2. The pre-molded bearing box with the exhaust, oil spilling and multi-point oiling lubricating system according to claim 1, wherein the inner wall of the pre-molded base (2) or the side surface of the driving shaft (1) is provided with a convex ring.

3. The pre-molded bearing box with the exhaust, oil spilling and multi-point oiling lubricating system according to claim 2, wherein the bearing set (6) is composed of a first bearing (61), a second bearing (62), a third bearing (63) and a fourth bearing (64), the inner wall of the pre-molded base (2) and the side surface of the driving shaft (1) are respectively provided with a convex ring, the first bearing (61) and the second bearing (62) are positioned between the end cover (3) and the convex ring (21) of the pre-molded base, the third bearing (63) is limited between the convex ring (21) of the pre-molded base and the convex ring (11) of the driving shaft, and the fourth bearing (64) is limited between the convex ring (11) of the driving shaft and the front cover (4).

4. The pre-molded bearing box with the exhaust, oil spilling and multi-point oiling lubricating system according to claim 3, characterized in that the number of the oil inlets (7) is 3, the pre-molded seat (2) is provided with a first oil inlet (71) between the end cover (3) and the pre-molded seat bulge ring (21), a second oil inlet (72) between the pre-molded seat bulge ring (21) and the driving shaft bulge ring (11), and the front cover (4) is provided with a third oil inlet (73) between the driving shaft bulge ring (11) and the end surface of the front cover (4).

5. The premolded bearing housing with exhaust and oil spill and multi-point refueling lubrication system according to any one of claims 1 to 4, wherein a seal ring (12) is further provided between the drive shaft (1) and the bearings located on both sides.

6. The pre-molded bearing box with the exhaust oil spilling and multi-point oiling lubricating system according to claim 1, wherein an exhaust oil spilling connector (9) is installed at the exhaust oil spilling hole (8), and the exhaust oil spilling connector (9) is provided with a through hole which penetrates axially.

7. The pre-molded bearing box with the exhaust oil spilling and multi-point oiling lubricating system according to claim 6, wherein the exhaust oil spilling connector (9) comprises a bulging part (91) located in the middle and a contact part (92) located at the bottom, the contact part (92) is located in the exhaust oil spilling hole (8) and is in interference connection with the exhaust oil spilling hole (8), and the width of the bulging part (91) is larger than that of the exhaust oil spilling hole (8).