Oil-seal-free oil return structure for main shaft of punching machine

Abstract

The utility model provides an oil-seal-free oil return structure for a main shaft of a punching machine. The oil-seal-free oil return structure comprises an oil return pipe, a filter screen I is fixedly mounted in the oil return pipe; the oil return pipe is fixedly communicated with a self-adaptive conducting mechanism which can move when the filter screen I is blocked and the pressure intensity is increased, and the liquid discharge end of the self-adaptive conducting mechanism is communicated with the oil return pipe. According to the oil-seal-free oil return structure for the main shaft of the punching machine, the self-adaptive conduction mechanism is arranged, so that after the filter screen I is blocked, a side path can be conducted in a self-adaptive manner, and the stability of oil supply is improved while continuous filtering is performed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil return structures, in particular to an oil return structure without oil seal for a main shaft of a punch press. Background Art

[0002] The spindle is the shaft that receives power from the engine or motor and transmits it to other parts. The spindle is also called the "optical axis", which is the abbreviation of the "main optical axis": the diameter with symmetry in the optical assembly. The spindle is an important component of the machine tool, which is used to install the grinding wheel and drive the grinding wheel to rotate to grind the product. The machine tool spindle refers to the axis on the machine tool that drives the workpiece or tool to rotate. The motion accuracy and structural rigidity of the spindle component are important factors that determine the processing quality and cutting efficiency.

[0003] During the processing of the punch press, as the material is deformed by the punching, waste chips will be generated. These waste chips include metal chips, non-metal chips or other impurities. If the lubrication system of the spindle or related components is improperly designed or poorly maintained, the waste chips may be mixed into the lubricating oil. If the waste chips are mixed into the lubricating oil, the cleanliness and lubrication performance of the lubricating oil will be reduced, thereby affecting the lubrication effect of the spindle. Although some existing oil return pipelines are equipped with filtering mechanisms, long-term use will cause blockage at the filter, thereby affecting the subsequent oil supply. Utility Model Content

[0004] The utility model provides a punch press main shaft oil return structure without oil seal, which is provided with a self-adaptive conduction mechanism to facilitate self-adaptive conduction of a side path after a filter screen is blocked, so as to continuously filter and increase the stability of oil supply.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil return structure without oil seal for a punch press spindle, comprising: an oil return pipe;

[0006] A filter screen 1 is fixedly installed inside the oil return pipe;

[0007] The oil return pipe is fixedly connected with a self-adaptive conduction mechanism which moves when the filter screen is blocked and the pressure increases. The discharge end of the self-adaptive conduction mechanism is connected with the oil return pipe.

[0008] Preferably, the self-adaptive conducting mechanism includes a connecting pipe, an auxiliary pipe, a spring, a movable plate and a sealing plate. One end of the connecting pipe is sealed, and the other end is fixedly connected to the oil return pipe. The liquid inlet end of the auxiliary pipe is fixedly sleeved with a filter screen 2 and is fixedly connected to the connecting pipe. The discharge end of the auxiliary pipe is fixedly connected to the oil return pipe. The movable plate is movably sleeved on the connecting pipe. The sealing plate is fixedly mounted on the movable plate and is used to connect the movable plate to the closed end of the connecting pipe through a spring.

[0009] Preferably, a guide indicating rod is provided in the middle of the spring, one end of the guide indicating rod is fixedly connected to the movable plate, and the other end of the guide indicating rod slides through the closed end of the connecting pipe.

[0010] Preferably, the middle portion of the filter screen 1 is rotatably connected to an axial flow blade via a rotating rod, and cleaning bristles for cleaning the water-facing surface of the filter screen 1 are fixedly connected to the axial flow blade.

[0011] Preferably, a one-way valve is provided on the auxiliary pipe.

[0012] Preferably, the connecting tube is a transparent connecting tube.

[0013] The beneficial effects of the utility model are:

[0014] The oil is introduced into the oil return pipe, and the filter screen one filters the return oil and transports it. When the mesh of the filter screen one is blocked and the pressure in one place of the filter screen increases, it acts on the movable plate, and the movable plate compresses the spring. The movement of the movable plate gradually drives the sealing plate to release the blockage of the filter screen two, which plays a role of self-adaptive auxiliary conduction, thereby stabilizing the return oil and increasing the stability of the oil supply when it is used again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a structural schematic diagram of a punch press spindle oil return structure without oil seal proposed by the utility model;

[0017] Figure 2 It is a schematic diagram of a partial side cross-sectional structure of a punch press spindle oil return structure without oil seal proposed by the utility model;

[0018] Numbers in the figure: 1. Oil return pipe; 2. Filter one; 3. Self-adaptive conduction mechanism; 31. Connecting pipe; 32. Auxiliary pipe; 33. Spring; 34. Moving plate; 35. Sealing plate; 36. Filter two; 37. Guide indicator rod; 4. Turning rod; 5. Axial flow blade; 6. Cleaning hair. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] according to Figure 1 , Figure 2 As shown, a punch press spindle oil return structure without oil seal comprises: an oil return pipe 1;

[0021] A filter screen 2 is fixedly installed inside the oil return pipe 1;

[0022] The oil return pipe 1 is fixedly connected with a self-adaptive conduction mechanism 3 which moves when the filter screen 2 is blocked and the pressure increases. The discharge end of the self-adaptive conduction mechanism 3 is connected with the oil return pipe 1.

[0023] In a specific embodiment, the self-adaptive conducting mechanism 3 includes a connecting pipe 31, an auxiliary pipe 32, a spring 33, a movable plate 34 and a sealing plate 35. One end of the connecting pipe 31 is blocked, and the other end is fixedly connected to the oil return pipe 1. A filter screen 36 is fixedly mounted at the liquid inlet end of the auxiliary pipe 32, and is fixedly connected to the connecting pipe 31. The discharge end of the auxiliary pipe 32 is fixedly connected to the oil return pipe 1. The movable plate 34 is movably sleeved on the connecting pipe 31. The sealing plate 35 is fixedly installed on the movable plate 34, and is used to connect the movable plate 34 to the closed end of the connecting pipe 31 through the spring 33.

[0024] Furthermore, a guide indicating rod 37 is provided in the middle of the spring 33 , one end of the guide indicating rod 37 is fixedly connected to the movable plate 34 , and the other end of the guide indicating rod 37 slides through the closed end of the connecting pipe 31 .

[0025] It should be noted that, under the action of the guide indicator rod 37 , the length of the guide indicator rod 37 moved out can be used to reflect the degree of internal blockage.

[0026] In a specific embodiment, the middle portion of the filter screen 2 is rotatably connected to an axial flow blade 5 via a rotating rod 4, and cleaning bristles 6 for cleaning the water-facing surface of the filter screen 2 are fixedly connected to the axial flow blade 5.

[0027] It should be noted that, under the flow of oil, the oil acts on the axial flow blade 5 to rotate, and the rotation of the axial flow blade 5 drives the cleaning hair 6 to clean the water-facing surface of the filter screen 2, thereby increasing the filtering stability of the filter screen 2.

[0028] In a specific embodiment, a one-way valve is provided on the auxiliary pipe 32 .

[0029] It should be noted that, under the action of the one-way valve, the oil passing through the auxiliary pipe 32 enters into the oil return pipe 1 .

[0030] In a specific embodiment, the connecting tube 31 is a transparent connecting tube.

[0031] It should be noted that when the connecting pipe 31 is set to be transparent, it is convenient to observe the internal situation.

[0032] Oil is introduced into the oil return pipe 1, and the filter screen 2 filters the return oil and transports it. When the mesh of the filter screen 2 is blocked and the pressure at the filter screen 2 increases, it acts on the movable plate 34, and the movable plate 34 compresses the spring 33. The movement of the movable plate 34 gradually drives the blocking plate 35 to release the blocking of the filter screen 2 36, which plays a role of self-adaptive auxiliary conduction, thereby stabilizing the return oil to increase the stability of the oil supply when it is used again.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A punch press spindle oil return structure without oil seal, characterized in that , comprising: an oil return pipe (1); A filter screen 1 (2) is fixedly installed inside the oil return pipe (1); The oil return pipe (1) is fixedly connected with a self-adaptive conduction mechanism (3) which moves when the pressure is increased due to blockage of the filter screen (2), and the discharge end of the self-adaptive conduction mechanism (3) is connected with the oil return pipe (1).

2. The punch press spindle oil return structure without oil seal according to claim 1, characterized in that: The self-adaptive conduction mechanism (3) comprises a connecting pipe (31), an auxiliary pipe (32), a spring (33), a movable plate (34) and a blocking plate (35); one end of the connecting pipe (31) is blocked, and the other end is fixedly connected to the oil return pipe (1); a filter screen 2 (36) is fixedly sleeved at the liquid inlet end of the auxiliary pipe (32) and is fixedly connected to the connecting pipe (31); a liquid discharge end of the auxiliary pipe (32) is fixedly connected to the oil return pipe (1); the movable plate (34) is movably sleeved on the connecting pipe (31); the blocking plate (35) is fixedly mounted on the movable plate (34) and is used to connect the movable plate (34) to the closed end of the connecting pipe (31) through the spring (33).

3. The punch press spindle oil return structure without oil seal according to claim 2, characterized in that: A guide indicating rod (37) is provided in the middle of the spring (33), one end of the guide indicating rod (37) is fixedly connected to the movable plate (34), and the other end of the guide indicating rod (37) slides through the closed end of the connecting pipe (31).

4. The punch press spindle oil return structure without oil seal according to claim 3, characterized in that: The middle part of the filter screen 1 (2) is rotatably connected to an axial flow blade (5) via a rotating rod (4), and cleaning bristles (6) for cleaning the water-facing surface of the filter screen 1 (2) are fixedly connected to the axial flow blade (5).

5. The punch press spindle oil return structure without oil seal according to claim 4, characterized in that: The auxiliary pipe (32) is provided with a one-way valve.

6. The punch press spindle oil return structure without oil seal according to claim 5, characterized in that: The connecting tube (31) is a transparent connecting tube.

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