Lubricating structure for connecting rod of press machine

Abstract

The utility model discloses a press connecting rod lubrication structure which comprises a screw rod and a connecting rod, the screw rod comprises a threaded section and a smooth section, a through hole is formed in the end face of the bottom of the connecting rod, a threaded structure is arranged on the upper section of the inner wall of the through hole, the position, close to an orifice, of the inner wall of the through hole is a smooth cambered surface, and an annular groove is formed in the smooth cambered surface. A sealing ring is arranged in the arc-shaped groove, the connecting rod is in threaded connection with the screw rod, the inner side face of the sealing ring is connected with the smooth section of the threaded rod, the threaded section of the screw rod is movably matched with the threaded structure of the through hole of the connecting rod, and the sealing ring is located below the threaded structure and the threaded section. Lubricating oil is arranged between the outer side wall of the screw rod and the inner side wall of the connecting rod through hole, the lubricating oil is thin oil, and an oil port is formed in the upper section of the connecting rod through hole.

Description

Technical Field

[0001] This utility model relates to a lubrication structure for a press connecting rod. Background Technology

[0002] As an indispensable core piece of equipment in the mechanical manufacturing process, the diversified development trend of presses has become an irreversible mainstream trend in the current market. In production practice, we deeply understand that the stability and efficiency of press performance are crucial for the smooth operation of the entire production line. However, with the continuous increase in machine tool load, the lubrication capacity of traditional thick oil lubrication methods in the connecting rod area has gradually become significantly insufficient. This insufficient lubrication directly leads to frequent seizing problems in the connecting rod threads, making it impossible for the connecting rod to be effectively adjusted, which in turn causes machine tool failures and downtime, seriously affecting production efficiency and product quality. Therefore, how to improve the lubrication system of presses and enhance the lubrication effect of the connecting rod area has become a technical problem that needs to be solved. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lubrication structure for a press connecting rod.

[0004] A press connecting rod lubrication structure includes a screw and a connecting rod. The screw includes a threaded section and a smooth section. The bottom end face of the connecting rod has a through hole. The upper section of the inner wall of the through hole has a threaded structure. The inner wall of the through hole near the orifice is a smooth arc surface with an annular groove. A sealing ring is provided in the arc groove. The connecting rod is threadedly connected to the screw. The inner side of the sealing ring is connected to the smooth section of the threaded rod. The threaded section of the screw is movably engaged with the threaded structure of the connecting rod through hole. The sealing ring is located below the threaded structure and the threaded section. Lubricating oil, which is a thin oil, is provided between the outer side wall of the screw and the inner side wall of the connecting rod through hole. An oil port is provided at the upper section of the connecting rod through hole.

[0005] Furthermore, the outer wall of the connecting rod is provided with an oil level indicator tube, which is a hollow transparent glass structure. The outer wall of the connecting rod through hole is provided with two connecting holes at different heights. The center line connecting the two connecting holes is parallel to the axis of the connecting rod through hole. The connecting holes are connected to the through hole of the connecting rod. The upper end and lower end of the oil level indicator tube are respectively fixed to the outer side of the connecting rod by bolts passing through the oil level indicator tube and the connecting hole. The outer side of the oil level indicator tube is provided with a scale.

[0006] Furthermore, in the lower section threaded structure of the bolt, the outer surface of the upper section is provided with a first oil passage, and the bottom surface of the bolt is provided with a second oil passage. The first oil passage and the second oil passage are connected. The internal space of the connecting rod through hole is connected to the inside of the oil level tube through the first oil passage and the second oil passage.

[0007] Furthermore, gaskets are provided between the bottom surface of the bolt head and the surface of the oil level gauge tube, and between the surface of the oil level gauge tube and the outer wall of the connecting rod.

[0008] Beneficial effects: Compared with the prior art, this utility model has the following advantages: This structure forms a relatively closed lubrication oil cavity through the threaded connection between the screw and the connecting rod, and the cooperation between the smooth section and the sealing ring. The thin oil used as lubricant can penetrate more effectively to the contact surface between the connecting rod and the screw, reducing friction and wear, while avoiding the problem of connecting rod thread seizure. Furthermore, the oil port design makes adding and replacing lubricant more convenient.

[0009] The oil level gauge, located on the outer wall of the connecting rod, is a hollow, transparent glass structure that clearly displays the lubricating oil level. The graduations on the outside of the gauge allow operators to accurately determine the remaining lubricating oil level, enabling timely replenishment and ensuring the continuous and stable operation of the lubrication system.

[0010] The threaded structure at the bottom of the bolt, the first oil passage at the top, and the second oil passage at the bottom of the bolt together form a flexible oil circuit system. This design connects the internal space of the connecting rod through-hole with the inside of the oil level gauge tube, which not only facilitates the circulation and renewal of lubricating oil but also improves the overall efficiency of the lubrication system.

[0011] The sealing ring installed in the annular groove, along with the gaskets between the bottom surface of the bolt head, the surface of the oil level gauge tube, and the outer wall of the connecting rod, together ensure the sealing performance of the lubrication system. This prevents lubricating oil leakage and the intrusion of external impurities, thereby extending the service life of the press. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of a connecting rod lubrication structure for a press.

[0013] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0014] In the diagram, 1 is the connecting rod, 2 is the screw, 3 is the oil level indicator tube, 4 is the sealing ring, 5 is the bolt, 6 is the first oil passage, 7 is the second oil passage, and 8 is the connecting hole. Detailed Implementation

[0015] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0016] like Figure 1-2 As shown, the components are: connecting rod 1, screw 2, oil level indicator tube 3, sealing ring 4, bolt 5, first oil passage 6, second oil passage 7, and connecting hole 8.

[0017] A press connecting rod lubrication structure includes a screw 2 and a connecting rod 1. The screw 2 includes a threaded section and a smooth section. The bottom end face of the connecting rod 1 has a through hole. The upper section of the inner wall of the through hole has a threaded structure. The inner wall of the through hole near the orifice is a smooth arc surface. An annular groove is provided on the smooth arc surface. A sealing ring 4 is provided in the arc groove. The connecting rod 1 and the screw 2 are threadedly connected. The inner side of the sealing ring 4 is connected to the smooth section of the screw 2. The threaded section of the screw 2 is in movable fit with the threaded structure of the through hole of the connecting rod 1. The sealing ring 4 is located below the threaded structure and the threaded section. Lubricating oil is provided between the outer side wall of the screw 2 and the inner side wall of the through hole of the connecting rod 1. The lubricating oil is a thin oil. An oil port is provided on the upper section of the through hole of the connecting rod 1.

[0018] In this embodiment, the outer wall of the connecting rod 1 is provided with an oil level tube 3. The oil level tube 3 is a hollow transparent glass structure. The outer wall of the through hole of the connecting rod 1 is provided with two connecting holes 8 at different heights. The center line connecting the two connecting holes 8 is parallel to the axis of the through hole of the connecting rod 1. The connecting holes 8 are connected to the through hole of the connecting rod 1. The upper end and the lower end of the oil level tube 3 are respectively fixed to the outside of the connecting rod 1 by bolts 5 passing through the oil level tube 3 and the connecting holes 8 in sequence. The outer side of the oil level tube 3 is provided with a scale.

[0019] In this embodiment, the lower section of the bolt 5 has a threaded structure, with a first oil passage 6 on the outer surface of the upper section and a second oil passage 7 on the bottom surface of the bolt 5. The first oil passage 6 and the second oil passage 7 are connected, and the internal space of the connecting rod 1 through the through hole is connected to the inside of the oil level tube 3 through the first oil passage 6 and the second oil passage 7.

[0020] In this embodiment, a gasket is provided between the bottom surface of the head of the bolt 5 and the surface of the oil level tube 3, and between the surface of the oil level tube 3 and the outer wall of the connecting rod 1.

[0021] Instructions for use: Before installation, ensure all parts are intact and free from defects such as rust and cracks. Also, prepare the necessary tools, materials, and thin oil lubricant. Align the through hole at the bottom of the connecting rod with the threaded section of the screw, and rotate the connecting rod until the threads are tightly engaged. The sealing ring should be located below the threaded structure and threaded section to ensure a proper seal.

[0022] Align the oil level gauge with the connection hole on the outer wall of the connecting rod, and secure the oil level gauge to the connecting rod with bolts. Ensure that the threaded section of the bolt fits tightly with the connection hole, and use a gasket to increase the seal. At the same time, check that the scale on the oil level gauge is clearly visible.

[0023] Ensure that the first and second oil passages on the bolt are connected, and that the internal space of the connecting rod through-hole is connected to the inside of the oil level gauge tube through the first and second oil passages. This facilitates the circulation and renewal of the lubricating oil.

[0024] Add an appropriate amount of thin oil lubricant through the oil port on the upper part of the connecting rod through-hole. During the oiling process, please observe the scale on the oil level gauge to ensure that the lubricant reaches the appropriate level.

[0025] During use, the lubrication between the connecting rod and the screw, as well as the oil level on the oil level gauge, should be checked regularly. If insufficient or deteriorated lubricating oil is found, it should be replenished or replaced promptly.

[0026] Cleaning and Maintenance: Regularly clean the surfaces of the connecting rod and screw to remove dirt and oil, keeping them clean and smooth. Also, check the wear of the seals and gaskets, and replace them promptly if necessary.

[0027] During use, avoid over-tightening bolts or impacting connecting rods to prevent damage to components or impairing lubrication.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lubrication structure for a press connecting rod, characterized in that, The device includes a screw and a connecting rod. The screw includes a threaded section and a smooth section. The bottom end face of the connecting rod has a through hole. The upper section of the inner wall of the through hole has a threaded structure. The inner wall of the through hole near the opening is a smooth arc surface with an annular groove. A sealing ring is provided in the annular groove. The connecting rod is threadedly connected to the screw. The inner side of the sealing ring is connected to the smooth section of the threaded rod. The threaded section of the screw is in movable engagement with the threaded structure of the connecting rod through hole. The sealing ring is located below the threaded structure and the threaded section. Lubricating oil, which is a thin oil, is provided between the outer wall of the screw and the inner wall of the connecting rod through hole. An oil port is provided on the upper section of the connecting rod through hole.

2. The press connecting rod lubrication structure according to claim 1, characterized in that, The connecting rod has an oil level indicator tube on its outer side wall. The oil level indicator tube is a hollow transparent glass structure. There are two connecting holes at different heights on the outer side wall of the connecting rod through hole. The center line of the two connecting holes is parallel to the axis of the connecting rod through hole. The connecting holes are connected to the through hole of the connecting rod. The upper and lower ends of the oil level indicator tube are fixed to the outside of the connecting rod by bolts passing through the oil level indicator tube and the connecting holes in sequence. The oil level indicator tube has a scale on its outer side.

3. The press connecting rod lubrication structure according to claim 2, characterized in that, The bolt lower section thread structure has a first oil passage on the outer surface of the upper section and a second oil passage on the bottom surface of the bolt. The first oil passage and the second oil passage are connected. The internal space of the connecting rod through hole is connected to the inside of the oil level tube through the first oil passage and the second oil passage.

4. The press connecting rod lubrication structure according to claim 3, characterized in that, Gaskets are provided between the bottom surface of the bolt head and the surface of the oil level gauge tube, and between the surface of the oil level gauge tube and the outer wall of the connecting rod.

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