Punching machine with thin oil bearing seat

Abstract

The invention discloses a punching machine with a thin oil bearing seat, and relates to the technical field of punching machines, the punching machine comprises a punching machine seat, a motor is arranged on the punching machine seat, an extension rod is arranged on an extension line of a motor shaft, an oil inlet and an oil outlet are formed in the bearing seat, an annular cavity is formed in the bearing seat, and the thin oil bearing seat is arranged in the annular cavity. A bearing is installed at the position, located in the middle of the annular cavity, of the bearing seat, the two sections of arc-shaped indents are a sealing ring and a connecting ring respectively, a partition plate fixed to the side wall of the annular cavity is further arranged between the sealing ring and the bearing, and a plurality of flow guide holes are evenly formed in the partition plate along the circumference at intervals. Due to the fact that the lug-shaped sealing ring is arranged, one side of the lug-shaped sealing ring can move, when the punching machine does not work, circulating oil can enter the sealing portion of the sealing ring, and therefore the punching machine is in a lubricating work state in the next work period, the sealing state cannot be affected due to lack of grease after long-time work, and oil leakage cannot be caused.

Description

Technical Field

[0001] The invention relates to the technical field of punching machines, in particular to a punching machine with a thin oil bearing seat. Background Art

[0002] A punch press is a stamping press. The design principle of a punch press is to convert circular motion into linear motion. The main motor drives the flywheel, which drives the gears, crankshaft (or eccentric gear), connecting rod, etc. through the clutch to achieve the linear motion of the slider. The movement from the main motor to the connecting rod is circular motion.

[0003] The punch press is to install the driving wheel on the motor shaft and drive the driven wheel through the belt. Generally, it is parallel to the belt to ensure strength. The driving wheel is directly installed on the motor shaft. Because the mass of the driving wheel will cause the motor shaft to receive lateral force, it will affect the life of the motor for a long time. Therefore, the prior art installs the driving wheel by setting an extension rod, and sets the bearing seat on the extension rod to balance the gravity of the driving wheel. The bearing is generally lubricated by grease, but grease is a consumable. After long-term use, the bearing needs to be disassembled and added later, which is not convenient enough. When adding new grease, it cannot be mixed with the old grease. It must be completely cleaned up quickly. In the prior art, there is also a way of lubrication by circulating oil, which is lubricated by injecting lubricating oil into the bearing. In this way, because of the circulation of oil, heat can be taken away immediately and because the bearing parts are fully immersed in the oil environment, the lubrication effect is better, but this method has higher requirements for sealing. If the sealing conditions are not suitable, it is easy to leak, and the sealing on both sides of the bearing is mainly based on the sealing ring, which also needs to be set with grease to lubricate the seal. To this end, we propose a punch press with a thin oil bearing seat. Summary of the invention

[0004] The object of the present invention is to provide a punch press with a thin oil bearing seat to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punch press with a thin oil bearing seat, comprising a punch press seat, a motor is arranged on the punch press seat, and an extension rod is arranged on the extension line of the motor shaft, the extension rod is installed on the punch press seat through the bearing seat, an oil inlet and an oil outlet are provided on the bearing seat, an annular cavity is provided in the bearing seat, and the diameter of the annular cavity is larger than the shaft diameter of the extension rod, and the bearing seat is located in the middle of the annular cavity to install the bearing, the annular side wall of the annular cavity of the bearing seat is coupled with a sealing ring located at both ends of the bearing, the sealing ring is radially composed of at least two arc-shaped concave sections, and the two arc-shaped concave sections are both recessed in the direction away from the end face of the bearing, the two arc-shaped concave sections are respectively a sealing ring and a connecting ring, a partition fixed to the side wall of the annular cavity is further provided between the sealing ring and the bearing, a plurality of guide holes are evenly spaced along the circumference on the partition plate, the guide holes guide the lubricating oil to the connecting ring and generate impact, so that the inner diameter side of the sealing ring moves and fits the extension rod to form a seal.

[0006] Preferably, a rotating ring is connected to the outer diameter side of the connecting ring of the sealing ring, and a groove adapted to the rotating ring is provided on the inner surface of the annular cavity of the bearing seat.

[0007] Preferably, a capillary groove is provided on one side of the sealing ring on the sealing ring that is in contact with the surface of the extension rod, and the capillary groove is a blind groove with one end open, and the open ends are inclined upward in the natural state of the sealing ring.

[0008] Preferably, a fitting section having a straight cross section is provided on a surface of one side of the sealing ring on the sealing ring that fits against the extension rod.

[0009] Preferably, the side wall of the annular cavity of the bearing seat is also fixedly connected to a first conical plate, and the corresponding extension rod is fixed with a second conical plate, the first conical plate and the second conical plate are both located on the side of the sealing ring away from the bearing, and the conical surfaces of the first conical plate and the second conical plate are close to form a gap channel, and the lubricating oil leaked from the sealing ring forms a tension film on the opposite surfaces of the first conical plate and the second conical plate, and is transferred to the side of the bearing under the action of centrifugal force when the extension rod rotates.

[0010] Preferably, elastic rods are provided in the sealing ring and the connecting ring on the sealing ring.

[0011] Preferably, the axis of the rotating ring is located in the groove.

[0012] Preferably, the inner diameter side cross-section of the sealing ring of the sealing ring is spherical, and an annular groove is correspondingly provided on the surface of the extension rod.

[0013] Preferably, the oil outlet is arranged between the sealing ring and the partition.

[0014] Preferably, the motor and the bearing seat are both mounted on a mounting plate, a slide rail is provided on the punch seat, and a slider is linearly slidably arranged in the slide rail, one end of the slide rail is rotatably connected to an adjusting bolt, the end of the adjusting bolt is threadedly connected to the slider, and the slider is fixed to the bottom of the mounting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an ear-shaped sealing ring, one side of which is movable. When the punch press is not in operation, circulating oil can enter the sealed part of the sealing ring, so that the part is in a lubricated working state in the next working cycle. The sealing state will not be affected by lack of grease after long-term operation, and oil leakage will not be caused. The second to semi-sealed structure formed by the first conical plate and the second conical plate in the present invention can prevent the circulating oil from flowing out and can also make it flow back through centrifugal force during rotation, thereby more effectively ensuring the stable operation of the bearing seat without oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the adjustment structure of the driving wheel of the present invention; Figure 3 The figure is a schematic diagram of the unfolded structure of the bearing seat; Figure 4 This is a schematic diagram of the half-section structure of the bearing seat; Figure 5 for Figure 4 A schematic diagram of the structure of the middle A area; Figure 6 It is a schematic diagram of the structure in the annular cavity; Figure 7 Schematic diagram of the sealing process of the sealing ring; Figure 8 is a cross-sectional schematic diagram of the sealing ring; Fig. 9 Schematic diagram of the structure of the capillary groove.

[0017] In the figure: 1-punch seat; 2-motor; 3-extension rod; 4-oil inlet; 5-oil outlet; 6-bearing seat; 7-annular cavity; 8-sealing ring; 9-sealing ring; 10-connecting ring; 11-partition; 12-guide hole; 13-rotating ring; 14-groove; 15-capillary groove; 16-fitting section; 17-first conical plate; 18-second conical plate; 19-slot; 20-mounting plate; 21-slide rail; 22-slider; 23-adjusting bolt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The present invention provides a technical solution: a punch press with a thin oil bearing seat, comprising a punch press seat 1, the punch press seat 1 is the upper half of the punch press, a motor 2 is mounted on the top of the punch press seat 1, and the motor 2 shaft is externally connected to an extension rod 3, both ends of the extension rod 3 are rotatably mounted on the punch press seat 1 through a bearing seat 6, a driving wheel is fixedly connected to the extension rod 3, the driving wheel is connected to a driven wheel on the main shaft of the punch press through a belt, and the circular motion is converted into an up and down reciprocating motion through the mechanism on the driven wheel and the main shaft; A single bearing seat 6 is composed of two upper and lower blocks, which are connected by bolts, etc. Semicircular grooves are provided on the inner sides of the two blocks, and the two semicircular grooves form an annular cavity 7. An annular groove for installing the bearing is also provided in the middle position of the block, and the outer ring of the bearing is located in the annular groove to keep the position stable. Two sealing rings 8 are provided in the single bearing seat 6, which are respectively located at the two ends of the bearing. An oil passage hole is provided on the outer ring of the bearing, which corresponds to the oil inlet 4 on the bearing seat 6. The oil outlet 5 is set at the lowest point of the annular cavity 7, and a pipeline is provided at the position of the bearing seat 6 below the oil outlet 5 to connect with the lubricating oil circulation mechanism. The oil outlet 5 is set at a position between the sealing ring 8 and the bearing, and a partition 11 is set between the sealing ring 8 and the end face of the bearing. A guide hole 12 is provided on the partition 11. The guide hole 12 is used to direct the lubricating oil so that the lubricating oil flows out of the guide hole 12 and directly rushes to the sealing ring 8 and pushes the sealing ring 8; The cross section of the sealing ring 8 is ear-shaped, that is, it has two arcs, namely the connecting ring 10 and the sealing ring 9. The outer edge of the connecting ring 10 is connected to the circumferential side wall of the annular cavity 7. The outer edge or outer diameter surface here refers to two sides or end surfaces with different diameters. The connecting ring 10 can be directly fixed to the inner wall of the annular cavity 7. The fixed connection requires drilling holes on the outer side of the bearing seat 6 and then fixing the connection with bolts or screws. It can also be connected by a movable connection. The movable connection method is described below. The inner edge side of the sealing ring 8 is the inner diameter side of the sealing ring 9. It is in a free state. In the initial state, the inner diameter side of the sealing ring 8 can be in contact with or not in contact with the surface of the extension rod 3 in its natural state. After the lubricating oil enters the bearing and flows out through the guide hole 12, due to the effect of pressure, the lubricating oil with a certain flow rate impacts the surface of the sealing ring 9. Under the condition of force, the inner diameter side of the sealing ring 8 moves toward the end away from the bearing. After contacting the surface of the extension rod 3, due to the friction force, the middle of the cross section of the sealing ring 8 moves, while the two ends are fixed, so that the arc of the sealing ring 9 and the connecting ring 10 becomes larger, thereby generating pressure on the two ends. Figure 7 The two curves shown in the figure are changed, and the dotted line is the state after the change. Because the right side of the sealing ring 8 is always kept in a bent state by the action of the oil pressure, the sealing ring 8 generates pressure at the upper and lower positions under the extrusion state, thereby sealing with the contact surface of the extension rod 3. This type of sealing is relative to the method of directly using an elastic sealing ring to directly fit the extension rod 3 to always maintain a sealed state, because the sealing side of the sealing ring 8 can be switched between the sealing and non-sealing states, the oil circuit circulation can be stopped after the punch stops working, and a small amount of circulation will contact the sealing side area of ​​the sealing ring 8, which is equivalent to the effect of automatically filling grease in the next lubrication cycle.

[0020] Furthermore, the sealing ring 8 is radially provided with two skeletons that match the cross-sections of the sealing ring 9 and the connecting ring 10. The skeletons are elastic rods distributed in a circumferential array to improve the overall elasticity, thereby facilitating bending and resetting.

[0021] See also Figure 6 In order to improve the stability of the sealing side of the sealing ring 9 and avoid excessive movement of the sealing ring 8 and difficulty in resetting due to large initial impact force or high oil pressure, a groove 19 is provided, and the corresponding inner edge cross-section of the sealing ring 9 is spherical, which is clamped by the spherical shape and the groove 19, so as to prevent excessive movement.

[0022] See also Figure 4 If the oil outlet 5 is located between the partition 11 and the bearing, the hydraulic pressure on the sealing ring 8 will be smaller. Therefore, setting the oil outlet 5 between the partition 11 and the sealing ring 8 can better ensure the hydraulic pressure and impact, so that the sealing ring 8 can reach a sealed state.

[0023] See also Figure 4 , Figure 5 , Figure 6 and Figure 8 The outer edge of the sealing ring 8 is arranged on the side wall of the annular cavity 7 by a movable connection. The rotating ring 13 is an annular columnar body, that is, the cross section is circular, and a groove 14 is provided. The rotating ring 13 rotates in the groove 14 to better move the middle area of ​​the sealing ring 8. If the outer edge of the sealing ring 8 is fixed, a reaction force will be generated when the middle part moves, but the rotation will not. When the circulating oil does not circulate, when the circulating oil is taken away by the mechanism, the hydraulic pressure disappears, and the sealing ring 8 is reset under the action of the reaction force of the bending deformation, and the seal with the surface of the extension rod 3 is no longer sealed. Because it takes time to draw out the circulating oil, part of the oil can enter the left side of the sealing ring 8 and infiltrate the sealing position of the sealing ring 9; Furthermore, the axis of the rotating ring 13 is located in the groove 14. This method mainly enables more than half of the rotating ring 13 to be located in the groove 14, thereby improving its stability and avoiding separation due to excessive force.

[0024] See also Fig. 9 The main function of the capillary groove 15 is to store the circulating oil. In the next cycle, the circulating oil is located between the extension rod 3 and the surface of the sealing ring 9 due to extrusion, which plays a lubricating role and prevents the surface of the sealing ring 9 from being consumed by friction. The capillary groove 15 is a micro-hole groove, and its natural opening direction is upward to prevent the circulating oil from flowing out. The settings of the capillary grooves 15 at different positions are different, but they are all upward.

[0025] See also Figure 8 and Fig. 9 , because when the sealing ring 9 is pressed against the surface of the extension rod 3, if the contact surface is in an arc shape, the contact surface will be smaller and the two sections will be tilted, which will affect the sealing effect. If the fitting section 16 is set to have a straight cross section, it can better fit the surface of the extension rod 3; Furthermore, the fitting section 16 can be concave, because the sealing ring 9 will generate pressure when pressed downward, and the concave fitting is better under the effect of the downward pressure, and the two ends are sealed more tightly.

[0026] See also Figure 5 and Figure 6 In the case where only the sealing ring 8 is provided, a small amount of oil will still enter the sealing ring 8 when it is in a sealed state. Figure 6 The left side of the sealing ring 8 is easy to flow out and leak, so at least one structure, namely the first conical plate 17 and the second conical plate 18, is provided to form an obstruction. The first conical plate 17 is fixed to the circumferential side wall of the annular cavity 7, so it is composed of two semicircular shapes and is provided with two blocks of the bearing seat 6; The two opposite surfaces of the first conical plate 17 and the second conical plate 18 are both conical, that is, Figure 6 In the cross section shown, both are inclined to the upper right, and the two are not in contact but the gap is small, so that the oil as small as a drop can be attached and stay between the two, that is, a tension film is formed. When the extension rod 3 rotates, the circulating oil will be thrown out under the action of centrifugal force, and enter the area between the second conical plate 18 and the sealing ring 8 to avoid outflow and leakage; Further, two sets of the first conical plate 17 and the second conical plate 18 are provided, and an annular step (not shown) is provided on the inner edge of one side of the conical surface of one second conical plate 18 close to the sealing ring 8, and the annular step is connected to the other second conical plate 18, and the annular step is provided at Figure 6 As shown in the figure, it is in a state of high on the left and low on the right, so that the circulating oil slides to one side of the sealing ring 8 when the punch press is not in operation, and actually contacts the second conical plate 18 close to the sealing ring 8, which is convenient for subsequent rotation and throwing out.

[0027] See also Figure 2 In order to facilitate the adjustment of the belt tension, the motor 2, the extension rod 3, the bearing seat 6, etc. are all installed on a movable mounting plate 20. The mounting plate 20 slides on the slide rail 21 through a T-shaped slider 22. The movement of the slider 22 is changed by rotating the adjusting bolt 23 installed at one end of the slide rail 21, thereby adjusting the position of the driving wheel and changing the belt tension.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punch press with a thin oil bearing seat, comprising a punch press seat (1), a motor (2) being arranged on the punch press seat (1), and an extension rod (3) being arranged on the extension line of the motor (2) shaft, the extension rod (3) being mounted on the punch press seat (1) through a bearing seat (6), the bearing seat (6) being provided with an oil inlet (4) and an oil outlet (5), characterized in that: An annular cavity (7) is provided in the bearing seat (6), and the diameter of the annular cavity (7) is larger than the shaft diameter of the extension rod (3). The bearing seat (6) is located in the middle of the annular cavity (7) to install the bearing. The annular side wall of the annular cavity (7) of the bearing seat (6) is coupled with sealing rings (8) located at both ends of the bearing. The sealing ring (8) is radially composed of at least two arc-shaped concave portions, and the two arc-shaped concave portions are both recessed in a direction away from the end face of the bearing. The two arc-shaped concave portions are respectively a sealing ring (9) and a connecting ring (10). A partition (11) fixed to the side wall of the annular cavity (7) is further provided between the sealing ring (8) and the bearing. A plurality of guide holes (12) are evenly spaced along the circumference of the partition (11). The guide holes (12) guide the lubricating oil to the connecting ring (10) and generate an impact, so that the inner diameter side of the sealing ring (8) moves and fits the extension rod (3) to form a seal.

2. A punch press with a thin oil bearing seat according to claim 1, characterized in that: A rotating ring (13) is connected to the outer diameter side of the connecting ring (10) of the sealing ring (8), and a groove (14) adapted to the rotating ring (13) is provided on the inner surface of the annular cavity (7) of the bearing seat (6).

3. A punch press with a thin oil bearing seat according to claim 1 or 2, characterized in that: A capillary groove (15) is provided on one side of the sealing ring (9) on the sealing ring (8) that abuts against the surface of the extension rod (3), and the capillary groove (15) is a blind groove with one end open, and the open end is inclined upward in the natural state of the sealing ring (8).

4. A punch press with a thin oil bearing seat according to claim 1, characterized in that: A surface of one side of the sealing ring (9) on the sealing ring (8) that abuts against the extension rod (3) is provided with a fitting section (16) having a straight cross section.

5. The punch press with a thin oil bearing seat according to claim 1, characterized in that: The side wall of the annular cavity (7) of the bearing seat (6) is also fixedly connected to a first conical plate (17), and a second conical plate (18) is fixedly connected to the corresponding extension rod (3). The first conical plate (17) and the second conical plate (18) are both located on the side of the sealing ring (8) away from the bearing. The conical surfaces of the first conical plate (17) and the second conical plate (18) are close to each other to form a gap channel. Lubricating oil leaked from the sealing ring (8) forms a tension film on the opposite surfaces of the first conical plate (17) and the second conical plate (18), and is transferred to the side of the bearing under the action of centrifugal force when the extension rod (3) rotates.

6. A punching machine with a thin oil bearing seat according to claim 1, characterized in that: Elastic rods are provided in the sealing ring (9) and the connecting ring (10) on the sealing ring (8).

7. A punching machine with a thin oil bearing seat according to claim 2, characterized in that: The axis of the rotating ring (13) is located in the groove (14).

8. The punch press with a thin oil bearing seat according to claim 1, characterized in that: The inner diameter side cross-section of the sealing ring (9) of the sealing ring (8) is spherical, and an annular groove (19) is correspondingly provided on the surface of the extension rod (3).

9. The punch press with a thin oil bearing seat according to claim 1, characterized in that: The oil outlet (5) is arranged between the sealing ring (8) and the partition plate (11).

10. The punch press with a thin oil bearing seat according to claim 1, characterized in that: The motor (2) and the bearing seat (6) are both mounted on the mounting plate (20). A slide rail (21) is provided on the punch seat (1), and a slider (22) is linearly slidably arranged in the slide rail (21). An adjusting bolt (23) is rotatably connected to one end of the slide rail (21). The end of the adjusting bolt (23) is threadedly connected to the slider (22). The slider (22) is fixed to the bottom of the mounting plate (20).

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