Efficient hydraulic buffer for press

Abstract

The utility model relates to the technical field of pressure cylinders, and discloses an efficient hydraulic buffer for a press, which comprises a press bottom plate and a fixing plate, a plurality of bolts and nuts are in threaded connection with the inside of the fixing plate, a shell is fixedly connected with the top of the fixing plate, and a hydraulic rod is slidably connected with the inside of the shell. The top of the hydraulic rod is fixedly connected with a contact plate, the bottom of the hydraulic rod is fixedly connected with a piston plate, two hydraulic holes are formed in the piston plate, the bottom of the piston plate is fixedly connected with a spring, the right side of the shell is fixedly connected with a guide-out pipe, and the right side of the guide-out pipe is fixedly connected with a condensation pipe. According to the hydraulic rod, part of high-temperature hydraulic oil guided out through the guide-out pipe is in contact with the cooling liquid to be cooled through the condensation pipe, the viscosity of the hydraulic oil is reduced, the damping effect is recovered, the wiping structure outside the hydraulic rod can wipe dust and oil stains outside the hydraulic rod when the hydraulic rod stretches out and draws back, and the hydraulic oil is kept pure.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure cylinders, in particular to a high-efficiency hydraulic buffer for a press. Background Art

[0002] In modern industrial production, presses are widely used in various fields, such as metal processing, plastics, and rubber products. However, the impact force generated by presses during operation can be enormous. If not cushioned, this can not only damage the press itself, but also affect the normal operation of surrounding equipment and even endanger the safety of operators. High-efficiency hydraulic buffers for presses are specially designed for presses. They utilize hydraulic principles to absorb the impact force generated during operation, thereby protecting the press and surrounding equipment, improving production efficiency and product quality.

[0003] In the prior art, when an impact force acts on a piston, the piston moves into the cavity and squeezes the hydraulic oil. After being squeezed, the hydraulic oil flows through a specific throttle hole or valve. During this process, the flow of the hydraulic oil generates resistance, thereby converting the energy of the impact force into heat energy and hydraulic energy. However, in the prior art, due to the repeated squeezing of the hydraulic oil, the converted heat energy affects the viscosity of the hydraulic oil, causing the hydraulic oil to temporarily lose its original damping effect. Therefore, a high-efficiency hydraulic buffer for the press is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a high-efficiency hydraulic buffer for a press, aiming to improve the problem in the prior art that the damping force is reduced after the hydraulic oil is squeezed multiple times.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A high-efficiency hydraulic buffer for a press comprises a press base plate and a fixed plate, wherein the internal threads of the fixed plate are connected to a plurality of bolts and nuts, the top of the fixed plate is fixedly connected to an outer shell, the inner sliding connection of the outer shell is connected to a hydraulic rod, the top of the hydraulic rod is fixedly connected to a contact plate, the bottom of the hydraulic rod is fixedly connected to a piston plate, two hydraulic holes are provided inside the piston plate, the bottom of the piston plate is fixedly connected to a spring, the right side of the outer shell is fixedly connected to an outlet pipe, the right side of the outlet pipe is fixedly connected to a condensing pipe, the outside of the outlet pipe is fixedly connected to a condensing tank, the left side of the condensing pipe is fixedly connected to an inlet pipe, and the interior of the inlet pipe is provided with a rotating component for opening and closing the inlet pipe.

[0007] As a further description of the above technical solution:

[0008] The left side of the inlet pipe is fixedly connected to the right side of the shell, and the external threads of the plurality of bolts and nuts are connected to the inside of the press bottom plate.

[0009] As a further description of the above technical solution:

[0010] The rotating assembly includes a rotating screw, the external thread of which is connected to the interior of the introduction tube.

[0011] As a further description of the above technical solution:

[0012] A ball valve is fixedly connected to the bottom of the rotating screw.

[0013] As a further description of the above technical solution:

[0014] Two fixing rings are fixedly connected to the interior of the introduction pipe, and adjacent sides of the two fixing rings are in contact with the left and right sides of the ball valve.

[0015] As a further description of the above technical solution:

[0016] The top of the rotating screw is fixedly connected with a rotating handle, and the outside of the ball valve is rotatably connected to the inside of the introduction pipe.

[0017] As a further description of the above technical solution:

[0018] A metal ring is fixedly connected to the top of the shell, and a wiper is fixedly connected to the inside of the metal ring.

[0019] As a further description of the above technical solution:

[0020] The outside of the hydraulic rod is slidably connected to the inside of the wiping object, and the material of the wiping object is sponge.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the rotating screw and ball valve inside are rotated by rotating the handle, so that the outer shell and the condenser are connected, and then the high-temperature hydraulic oil is squeezed into the condenser by pressure for contact cooling, thereby reducing the viscosity of the hydraulic oil and restoring the damping effect.

[0023] 2. In the utility model, the contact plate drives the hydraulic rod to slide downward, so that the outer wall of the hydraulic rod is in full sliding contact with the wiper, wiping the dust and debris on the outer wall of the hydraulic rod, reducing the internal pollutants brought in during the next extension and retraction. Then, when the hydraulic rod is pushed upward by the buffering and reaction force of the internal spring, the hydraulic oil on the outer wall of the hydraulic rod is wiped again, reducing the adhesion of pollutants, maintaining the surface cleanliness of the hydraulic rod, and maintaining normal buffering function. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of the high-efficiency hydraulic buffer for a press proposed in the utility model;

[0025] Figure 2 This is a schematic diagram of the shell structure of the high-efficiency hydraulic buffer for presses proposed in the utility model;

[0026] Figure 3 This is a schematic diagram of the condensation tank structure of the high-efficiency hydraulic buffer for the press proposed in the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the inlet pipe of the high-efficiency hydraulic buffer for the press proposed in the utility model;

[0028] Figure 5 This is a schematic diagram of the metal ring structure of the high-efficiency hydraulic buffer for a press proposed in the utility model.

[0029] Legend:

[0030] 1. Press base plate; 2. Fixed plate; 3. Bolts and nuts; 4. Casing; 5. Hydraulic rod; 6. Contact plate; 7. Piston plate; 8. Hydraulic hole; 9. Spring; 10. Outlet pipe; 11. Condensate tank; 12. Condensate pipe; 13. Inlet pipe; 14. Rotating screw; 15. Turning handle; 16. Fixing ring; 17. Ball valve; 18. Metal ring; 19. Wipe. DETAILED DESCRIPTION

[0031] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1The utility model provides an embodiment: a high-efficiency hydraulic buffer for a press, comprising a press bottom plate 1 and a fixed plate 2. The fixed plate 2 is often made of strong and durable steel to ensure that it can withstand the various forces and vibrations generated when the press is working. Its surface is finely processed to ensure flatness so that it can be tightly combined with the fixed plate 2 to provide stable support for the entire hydraulic buffer. The internal thread connection of the fixed plate 2 is connected with a plurality of bolts and nuts 3. The plurality of bolts and nuts 3 are evenly distributed on the fixed plate 2. Through the threaded connection, it can provide a strong tightening force to ensure that the hydraulic buffer will not loosen or move during the operation of the press. The connection method of the bolts and nuts 3 is convenient for installation and replacement. The top of the fixed plate 2 is fixedly connected with a shell 4. The shell 4 is cylindrical and is processed into the shape of a hydraulic buffer by stamping, welding, etc. of Q235 steel. It has good sealing and pressure resistance. The role of the shell 4 is to provide protection for the internal components of the hydraulic buffer to prevent external impurities from entering, and it can also withstand the pressure of the hydraulic oil.

[0033] Reference Figures 1 to 2 The inside of the shell 4 is slidably connected to a hydraulic rod 5. The hydraulic rod 5 is made of high-strength alloy steel and is cylindrical. Its surface is finely processed to ensure the sliding fit accuracy with the inner wall of the shell 4, so that the hydraulic rod 5 can slide up and down smoothly in the shell 4. The top of the hydraulic rod 5 is fixedly connected to a contact plate 6. The contact plate 6 is generally round or square. Its function is to contact the moving parts of the press, receive impact force, and transmit the impact force to the hydraulic rod 5. The contact plate 6 has good wear resistance and impact resistance.

[0034] Reference Figures 1 to 3, the bottom of the hydraulic rod 5 is fixedly connected with a piston plate 7, which is usually circular, and its diameter matches the inner diameter of the shell 4, and can slide tightly inside the shell 4. The function of the piston plate 7 is to divide the interior of the shell 4 into two chambers, an upper chamber and an lower chamber. When the hydraulic rod 5 moves downward under the impact force, the piston plate 7 squeezes the hydraulic oil in the lower chamber, causing it to flow through a specific channel, thereby generating a buffering force. There are two hydraulic holes 8 inside the piston plate 7. The function of the hydraulic hole 8 is to control the flow speed and direction of the hydraulic oil. By reasonably designing the size and shape of the hydraulic hole 8, the buffering performance of the hydraulic buffer can be adjusted to adapt to different impact forces. The bottom of the piston plate 7 is fixedly connected There is a spring 9, whose function is to provide a certain amount of auxiliary buffering force during the operation of the hydraulic buffer. When the piston plate 7 moves downward, the spring 9 is compressed and stores energy; when the impact force disappears, the spring 9 releases energy to help the piston plate 7 and the hydraulic rod 5 return to their initial positions. The right side of the shell 4 is fixedly connected to an outlet pipe 10, whose function is to guide the cooled hydraulic oil into the shell 4. The interior of the outlet pipe 10 is usually smooth and flat to reduce the resistance when the hydraulic oil flows. The right side of the outlet pipe 10 is fixedly connected to a condenser pipe 12. The condenser pipe 12 is generally spiral and made of a metal copper tube. Its function is to increase the contact area between the hydraulic oil and the cooling medium and improve the cooling efficiency. The outside of the outlet pipe 10 is fixedly connected to a condenser tank 11, which is filled with cooling medium to provide a place for cooling the hydraulic oil. The surface of the condenser tank 11 is usually treated with anti-corrosion to increase its service life. The condenser tank 11 is usually provided with an inlet and outlet for the circulation of the cooling medium. The left side of the condenser 12 is fixedly connected to an inlet pipe 13. The function of the inlet pipe 13 is to discharge the high-temperature hydraulic oil in the shell 4 to the subsequent structure for cooling. The interior of the inlet pipe 13 is provided with a rotating component for opening and closing the inlet pipe 13. The left side of the inlet pipe 13 is fixedly connected to the right side of the shell 4, and the external threads of multiple bolts and nuts 3 are connected to the inside of the press base plate 1.

[0035] Reference Figure 1 、 Figure 3 and Figure 4The rotating assembly includes a rotating screw 14. The external thread of the rotating screw 14 is connected to the inside of the introduction pipe 13. Its surface has fine threads. The main function of the rotating screw 14 is to control the opening and closing of the subsequent structure by rotation, thereby adjusting the flow of hydraulic oil in the introduction pipe 13. The bottom of the rotating screw 14 is fixedly connected to a ball valve 17. The ball valve 17 is spherical and made of corrosion-resistant metal material. The surface of the ball valve 17 is finely processed to ensure the sealing between it and the inner wall of the introduction pipe 13. A hole is opened in the middle to control the opening and closing by rotation. Two fixing rings 16 are fixedly connected to the inside of the introduction tube 13. The adjacent sides of the two fixing rings 16 are in contact with the left and right sides of the ball valve 17. The fixing rings 16 provide a limit for the rotation of the internal ball valve 17 to prevent position displacement. The top of the rotating screw 14 is fixedly connected with a turning handle 15. The function of the turning handle 15 is to facilitate the operator to rotate the rotating screw 14. The shape and size of the turning handle 15 are designed to be easy for the operator to hold and apply force to easily control the opening and closing of the ball valve 17. The external rotation of the ball valve 17 is connected to the inside of the introduction tube 13.

[0036] Reference Figure 1 and Figure 5 A metal ring 18 is fixedly connected to the top of the housing 4. The metal ring 18 is circular and made of stainless steel. The inner diameter of the metal ring 18 is slightly larger than the diameter of the hydraulic rod 5. A wiper 19 is fixedly connected to the inside of the metal ring 18. The outside of the hydraulic rod 5 is slidably connected to the inside of the wiper 19. The wiper 19 is made of a sponge with good water absorption and softness. The shape and size of the sponge are designed according to the inner diameter of the metal ring 18 to ensure that it can be tightly wrapped around the outside of the hydraulic rod 5. The main function of the wiper 19 is to wipe off dust, dirt, and impurities on the surface of the hydraulic rod 5 during the extension and retraction process of the hydraulic rod 5, keeping the hydraulic rod 5 clean.

[0037] Working Principle: First, the damper is secured to the top of the press base plate 1 using multiple bolts and nuts 3. Rotating the handle 15 drives the internal rotating screw 14 and ball valve 17, connecting the housing 4 and condenser tube 12. Gravity forces the contact plate 6 downward, forcing the hydraulic rod 5 and piston plate 7 downward, forcing the hydraulic oil inside to flow out of the hydraulic port 8. This also forces some hydraulic oil from the inlet pipe 13 through the condenser tube 12. Because the condenser tank 11 contains cooling liquid, the spiral contact of the condenser tube 12 increases the contact area, lowering the hydraulic oil's temperature. Finally, it flows back into the housing 4 through the outlet pipe 10. During operation, the hydraulic oil generates heat due to repeated compression and release. Without cooling, the increased oil temperature reduces the viscosity of the hydraulic oil. This reduced viscosity increases the flow rate of the hydraulic oil when the damper is impacted, reducing the damping force and compromising its effectiveness. Cooling the hydraulic oil maintains its viscosity within an appropriate range, ensuring consistent damping performance.

[0038] Secondly, since the hydraulic rod 5 slides multiple times inside the outer shell 4, it comes into contact with both the internal hydraulic oil and the external dust and debris, which can easily bring the external dust into the interior of the outer shell 4 and contaminate the internal hydraulic oil. The hydraulic rod 5 is driven to slide downward through the contact plate 6, so that the outer wall of the hydraulic rod 5 is in full sliding contact with the wiper 19 inside the metal ring 18, wiping the dust and debris on the outer wall of the hydraulic rod 5 to ensure the purity of the internal hydraulic oil. Then, when the hydraulic rod 5 is pushed to slide upward by the buffering and reaction force of the internal spring 9, the hydraulic oil on the outer wall of the hydraulic rod 5 is wiped again, reducing the adhesion of pollutants, reducing frictional resistance, maintaining smooth extension and contraction of the hydraulic rod 5, and maintaining the cleanliness of the surface of the hydraulic rod 5, which can make it more flexible during work and ensure the normal buffering function of the buffer.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency hydraulic buffer for a press, comprising a press bottom plate (1) and a fixed plate (2), characterized in that: The internal thread of the fixing plate (2) is connected with a plurality of bolts and nuts (3); the top of the fixing plate (2) is fixedly connected with a shell (4); the inside of the shell (4) is slidably connected with a hydraulic rod (5); the top of the hydraulic rod (5) is fixedly connected with a contact plate (6); the bottom of the hydraulic rod (5) is fixedly connected with a piston plate (7); two hydraulic holes (8) are provided inside the piston plate (7); the bottom of the piston plate (7) is fixedly connected with a spring (9); the right side of the shell (4) is fixedly connected with an outlet pipe (10); the right side of the outlet pipe (10) is fixedly connected with a condensing pipe (12); the outside of the outlet pipe (10) is fixedly connected with a condensing tank (11); the left side of the condensing pipe (12) is fixedly connected with an inlet pipe (13); the inside of the inlet pipe (13) is provided with a rotating component for opening and closing the inlet pipe (13).

2. The high-efficiency hydraulic buffer for a press according to claim 1, characterized in that: The left side of the introduction pipe (13) is fixedly connected to the right side of the housing (4), and the external threads of the plurality of bolts and nuts (3) are connected to the inside of the press bottom plate (1).

3. The high-efficiency hydraulic buffer for a press according to claim 1, characterized in that: The rotating assembly comprises a rotating screw (14), the external thread of which is connected to the interior of the introduction tube (13).

4. The high-efficiency hydraulic buffer for a press according to claim 3, characterized in that: A ball valve (17) is fixedly connected to the bottom of the rotating screw (14).

5. The high-efficiency hydraulic buffer for a press according to claim 4, characterized in that: Two fixing rings (16) are fixedly connected to the interior of the introduction pipe (13), and adjacent sides of the two fixing rings (16) are in contact with the left and right sides of the ball valve (17).

6. The high-efficiency hydraulic buffer for a press according to claim 4, characterized in that: The top of the rotating screw (14) is fixedly connected to a rotating handle (15), and the outside of the ball valve (17) is rotatably connected to the inside of the introduction pipe (13).

7. The high-efficiency hydraulic buffer for a press according to claim 1, characterized in that: A metal ring (18) is fixedly connected to the top of the housing (4), and a wiper (19) is fixedly connected to the interior of the metal ring (18).

8. The high-efficiency hydraulic buffer for a press according to claim 7, characterized in that: The outside of the hydraulic rod (5) is slidably connected to the inside of the wiper (19), and the material of the wiper (19) is sponge.

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