Bearing pad lifting device of press machine

Abstract

The utility model belongs to the technical field of press machines, and particularly relates to a bearing pad lifting device of a press machine, which comprises a device body, a plurality of telescopic rods are arranged in the device body, a bearing pad body is slidably connected in the device body and positioned at the tops of the telescopic rods, and connecting bins are mounted on two sides of the device body. The device body and the connecting bin are connected through a connecting pipe, a storage bin is installed on the side, away from the device body, of the connecting bin, the storage bin and the connecting bin are connected through a connecting pipe, and a bearing structure is installed in the storage bin and the connecting bin and used for bearing oil in the device body. The bearing structure comprises a push plate slidably connected into the storage bin, and at least one second spring is fixed to the side, away from the connecting bin, of the push plate. Stability and repeatability of the working process can be guaranteed, when liquid media need to flow back, the backflow speed and quality of oil liquid can be accurately controlled, and stable operation of a hydraulic system is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of press technology, specifically relating to a press bearing lifting device. Background Technology

[0002] In modern industrial production, presses are important metal processing equipment, widely used in stamping, forming, forging, and other processes. The press's bearing lifting device is one of its core components, responsible for ensuring the correct position of the workpiece and the uniform transmission of pressure during press operation. However, existing bearing lifting devices have some design shortcomings, especially in the control of liquid media (such as hydraulic oil).

[0003] Existing bearing lifting devices typically use hydraulic systems to achieve the lifting and lowering of the bearing. During the press's downward movement, the hydraulic oil is compressed, causing the bearing to descend. During the press's upward movement, the hydraulic oil needs to flow back into the oil tank so that the bearing can return to its initial position. However, this backflow process often lacks an effective control mechanism, leading to easy backflow of the liquid medium when the bearing rises. This not only affects the press's working efficiency but may also impact the hydraulic system, shortening the equipment's service life.

[0004] For example, in the metal stamping process, if the hydraulic oil flows back too quickly when the bearing rises, it may cause a slight change in the position of the workpiece, affecting the accuracy and quality of the stamped parts. In addition, rapid backflow may also cause pressure fluctuations in the hydraulic system, increase system wear, and even cause the hydraulic oil temperature to rise, affecting the stable operation of the entire press.

[0005] To address the aforementioned problems, this utility model proposes an improved bearing pad lifting device. Utility Model Content

[0006] The purpose of this invention is to provide a bearing lifting device for a press, which can ensure the stability and repeatability of the working process. When liquid medium reflux is required, the reflux speed and amount of oil can be precisely controlled to ensure the smooth operation of the hydraulic system.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A press bearing lifting device includes a device body, a plurality of telescopic rods are provided inside the device body, a bearing body is slidably connected inside the device body and at the top of the telescopic rods, connecting chambers are installed on both sides of the device body, the device body and the connecting chambers are connected by connecting pipes, a storage chamber is installed on the side of the connecting chamber away from the device body, and the storage chamber is connected to the connecting chamber by connecting pipes.

[0009] The storage compartment and the connecting compartment are equipped with a receiving structure for receiving the oil inside the device body.

[0010] The receiving structure includes a push plate that is slidably connected inside the storage compartment. At least one second spring is fixed on the side of the push plate away from the connecting compartment, and the second spring is connected to the inner wall of the storage compartment.

[0011] A central partition column is fixed at the bottom center of the connecting chamber. A feed chute and a discharge chute are provided inside the connecting chamber and on both sides of the central partition column. A middle chute is provided at the top of the central partition column, and the feed chute, the middle chute and the discharge chute are connected.

[0012] The interior of the connecting chamber is also equipped with a sealing structure, which is used to seal the connecting area between the feed trough, the intermediate trough and the discharge trough.

[0013] The sealing structure includes an abutment sealing plate that is slidably connected inside the connecting chamber, and the abutment sealing plate is disposed at the upper end of the central partition column. A first spring is fixed to the top of the abutment sealing plate and is connected to the connecting chamber. At least two solenoid valves are also fixed on the inner wall of the connecting chamber.

[0014] A motor is also installed on the top of the connecting compartment. The output end of the motor is vertically downward and passes through the connecting compartment to be fixed with a threaded rod. The threaded rod is rotatably connected to the connecting compartment. A lower pressure plate is threaded to the outer side of the threaded rod. The lower pressure plate is slidably connected to the connecting compartment. The lower pressure plate is fitted with the first spring.

[0015] The technical effects achieved by this utility model are as follows:

[0016] This invention effectively prevents the liquid medium from flowing back into the bearing pad after the press is pressed down and during the upward movement, thereby ensuring the stability and repeatability of the working process. When liquid medium backflow is required, the backflow speed and amount of the oil can be precisely controlled to ensure the smooth operation of the hydraulic system.

[0017] Because the control of the liquid medium is more precise, it avoids workpiece position changes caused by liquid backflow, and by controlling the backflow of the liquid medium, it reduces the impact and wear of the hydraulic system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the bearing body, connecting compartment, and storage compartment in this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Device body; 2. Support body; 3. Telescopic rod; 4. Connecting chamber; 5. Storage chamber; 6. Feed chute; 7. Discharge chute; 8. Intermediate chute; 9. First spring; 10. Abutment sealing plate; 11. Push plate; 12. Second spring; 13. Motor; 14. Threaded rod; 15. Lower pressure plate; 16. Central partition column; 17. Solenoid valve. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figures 1-3 As shown, a bearing pad lifting device for a press includes a device body 1. Multiple telescopic rods 3 are installed inside the device body 1. A bearing pad body 2 is slidably connected inside the device body 1 and at the top of the telescopic rods 3. Furthermore, a sealing gasket layer is covered on the outside of the bearing pad body 2. This arrangement prevents oil from moving upward to the upper part of the bearing pad body 2. The sealing gasket can be made of rubber or the like. Connecting chambers 4 are installed on both sides of the device body 1. The device body 1 and the connecting chambers 4 are connected by connecting pipes. A storage chamber 5 is installed on the side of the connecting chamber 4 away from the device body 1, and the storage chamber 5 is connected to the connecting chamber 4 by connecting pipes.

[0025] When the upper die of the press compresses downward, it can drive the bearing body 2 to move downward and drive the telescopic rod 3 to compress, thereby causing the oil inside the device body 1 to be pressurized and enter the connecting chamber 4 and the storage chamber 5. After the press is completed, the oil inside the storage chamber 5 and the connecting chamber 4 can re-enter the interior of the device body 1, driving the bearing body 2 to move upward, thereby ensuring that the bearing body 2 can rise and fall.

[0026] The storage chamber 5 and the connecting chamber 4 are equipped with receiving structures, which are used to receive the oil inside the device body 1.

[0027] See attached document Figures 2-3 The receiving structure includes a push plate 11 that is slidably connected inside the storage compartment 5. At least one second spring 12 is fixed on the side of the push plate 11 away from the connecting compartment 4, and the second spring 12 is connected to the inner wall of the storage compartment 5.

[0028] When the device body 1 is pressed down, it can drive the oil inside into the connecting chamber 4 and the storage chamber 5, and by pressing the push plate 11 inside the storage chamber 5, the push plate 11 moves and compresses the second spring 12.

[0029] A central partition column 16 is fixed at the bottom center of the connecting chamber 4. The central partition column 16 can divide the interior of the connecting chamber 4 into two areas, namely the feed chute 6 and the discharge chute 7. The feed chute 6 and the discharge chute 7 are provided inside the connecting chamber 4 on both sides of the central partition column 16. An intermediate chute 8 is provided at the top of the central partition column 16, and the feed chute 6, the intermediate chute 8 and the discharge chute 7 are connected.

[0030] The interior of the connecting chamber 4 is also equipped with a sealing structure, which is used to seal the connecting area between the feed trough 6, the intermediate trough 8 and the discharge trough 7.

[0031] See attached document Figure 3 The sealing structure includes an abutment sealing plate 10 slidably connected inside the connecting chamber 4, and the abutment sealing plate 10 is located at the upper end of the central partition 16. The abutment sealing plate 10 covers the central partition 16, thus sealing the feed chute 6 and the discharge chute 7, and also sealing the intermediate chute 8. A first spring 9 is fixed to the top of the abutment sealing plate 10, and the first spring 9 is connected to the connecting chamber 4. The rigidity of the second spring 12 is greater than that of the first spring 9, thereby causing the second spring... The elasticity of spring 12 is less than that of the first spring 9, so that when the second spring 12 extends and retracts, it can indirectly drive the first spring 9 to extend and retract, while the first spring 9 cannot drive the second spring 12 to extend and retract. At least two solenoid valves 17 are also fixed on the inner wall of the connecting chamber 4. Furthermore, a groove is provided at the position of the sealing plate 10 near the middle partition 16. The groove fits into the middle partition 16. Through this arrangement, the sealing plate 10 can increase its sealing effect when it fits into the middle partition 16.

[0032] The principle of this device so far is as follows: when the upper die of the press compresses downward, it can drive the bearing body 2 to move downward and drive the telescopic rod 3 to compress, thereby causing the oil inside the device body 1 to be pressurized and enter the connecting chamber 4 and the storage chamber 5. When entering the interior of the connecting chamber 4, the liquid first passes through the feed trough 6. The force of the press is greater than the elastic force of the first spring 9, thereby causing the first spring 9 to contract, so that the liquid inside the feed trough 6 passes through the intermediate trough 8 and the discharge trough 7 and enters the interior of the storage chamber 5.

[0033] After entering the interior of the storage compartment 5, the push plate 11 is brought into contact, causing the push plate 11 to compress the second spring 12. After the press is completed, the solenoid valve 17 can be activated, so that the solenoid valve 17, through the magnetic attraction, makes the sealing plate 10 and the central partition 16 come into contact with each other.

[0034] Here, a magnetic block is provided on the abutting sealing plate 10, and the magnetic pole of the magnetic block is opposite to that of the solenoid valve 17 on the side that is close to each other, so that when the solenoid valve 17 is activated, the magnetic block can drive the abutting sealing plate 10 to move towards the central partition 16.

[0035] When the sealing plate 10 moves to fit against the central partition 16, the elasticity of the second spring 12 cannot overcome the magnetic force, so that the oil will remain inside the storage chamber 5, preventing the oil from flowing back.

[0036] When oil needs to enter the device body 1, the solenoid valve 17 can be closed, so that the solenoid valve 17 cancels the repulsive force on the magnetic block on the sealing plate 10. At this time, the second spring 12 is stretched and reset, which drives the push plate 11 to push the oil into the discharge trough 7. The push of the second spring 12 drives the first spring 9 to compress, which drives the sealing plate 10 to move upward, so that the oil enters the intermediate trough 8 and then into the feed trough 6, and then enters the device body 1 through the feed trough 6.

[0037] According to the above structure, a motor 13 is also installed on the top of the connecting compartment 4. A protective shell is provided on the outside of the motor 13 to protect the motor 13. The output end of the motor 13 is vertically downward and passes through the connecting compartment 4 to be fixed with a threaded rod 14. The threaded rod 14 is rotatably connected to the connecting compartment 4. A lower pressure plate 15 is threadedly connected to the outside of the threaded rod 14. The lower pressure plate 15 is slidably connected to the connecting compartment 4. The lower pressure plate 15 is fitted with the first spring 9.

[0038] When the motor 13 drives the screw rod 14, it can rotate the screw rod 14. Through the screw connection between the screw rod 14 and the lower pressure plate 15, and through the sliding connection between the lower pressure plate 15 and the connecting chamber 4, the lower pressure plate 15 can move up and down when the screw rod 14 rotates. When the lower pressure plate 15 moves down, it can compress the first spring 9, thereby making the elasticity of the first spring 9 against the sealing plate 10 stronger. This makes the rigidity of the first spring 9 closer to the rigidity of the second spring 12, so that the elasticity of the first spring 9 and the second spring 12 are closer to each other. As a result, when the second spring 12 pushes the push plate 11 to make the liquid inside the storage chamber 5 flow back, the intermediate groove 8 between the sealing plate 10 and the central partition 16 shrinks, thereby reducing the speed of backflow.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A bearing lifting device for a press, comprising a device body (1), characterized in that: The device body (1) is provided with multiple telescopic rods (3) inside. A pad body (2) is slidably connected inside the device body (1) and at the top of the telescopic rods (3). A connecting compartment (4) is installed on both sides of the device body (1). The device body (1) and the connecting compartment (4) are connected by a connecting pipe. A storage compartment (5) is installed on the side of the connecting compartment (4) away from the device body (1). The storage compartment (5) is connected to the connecting compartment (4) by a connecting pipe. The storage compartment (5) and the connecting compartment (4) are equipped with a receiving structure, which is used to receive the oil inside the device body (1).

2. The bearing lifting device for a press according to claim 1, characterized in that: The receiving structure includes a push plate (11) that is slidably connected inside the storage compartment (5). At least one second spring (12) is fixed on the side of the push plate (11) away from the connecting compartment (4), and the second spring (12) is connected to the inner wall of the storage compartment (5). A central partition column (16) is fixed in the middle of the bottom of the connecting chamber (4). A feed trough (6) and a discharge trough (7) are provided inside the connecting chamber (4) and on both sides of the central partition column (16). An intermediate trough (8) is provided at the top of the central partition column (16). The feed trough (6), the intermediate trough (8) and the discharge trough (7) are connected. The connecting chamber (4) is also equipped with a sealing structure, which is used to seal the connecting area between the feed trough (6), the intermediate trough (8) and the discharge trough (7).

3. The bearing lifting device for a press according to claim 2, characterized in that: The sealing structure includes an abutment sealing plate (10) that is slidably connected inside the connecting chamber (4), and the abutment sealing plate (10) is disposed at the upper end of the central partition (16). A first spring (9) is fixed to the top of the abutment sealing plate (10), and the first spring (9) is connected to the connecting chamber (4). At least two solenoid valves (17) are also fixed on the inner wall of the connecting chamber (4).

4. The bearing lifting device for a press according to claim 3, characterized in that: A motor (13) is also installed on the top of the connecting chamber (4). The output end of the motor (13) is vertically downward and passes through the connecting chamber (4) to be fixed with a threaded rod (14). The threaded rod (14) is rotatably connected to the connecting chamber (4). A lower pressure plate (15) is threadedly connected to the outer side of the threaded rod (14). The lower pressure plate (15) is slidably connected to the connecting chamber (4). The lower pressure plate (15) is fitted with the first spring (9).

5. The bearing lifting device for a press according to claim 1, characterized in that: The outer side of the bearing body (2) is covered with a sealing gasket layer.

6. The bearing lifting device for a press according to claim 3, characterized in that: The sealing plate (10) has a groove near the central partition (16), and the groove fits into the central partition (16).

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