Multi-layer high-sealing structure of full-automatic powder forming hydraulic machine

Abstract

The utility model relates to a multi-layer high-sealing structure of a full-automatic powder forming hydraulic machine, which belongs to the technical field of full-automatic powder forming hydraulic machines and comprises a mounting top plate, and a hydraulic cylinder is fixedly mounted at the top of the mounting top plate and comprises a cylinder body. According to the multi-layer high-sealing structure of the full-automatic powder forming hydraulic machine, the multi-layer sealing assembly is arranged at the top of the cylinder body, the sealing air bag is arranged at the top of the sliding sealing inclined groove in the multi-layer sealing assembly, the sealing pressure of the inclined face sealing ring is adjusted, and when the use pressure of a hydraulic cylinder is low, the sealing pressure is reduced; the hydraulic oil cylinder solves the problems that according to a hydraulic oil cylinder of a common full-automatic powder forming hydraulic machine, the sealing structure, used for sealing the piston rod, at one end of the cylinder body is simple, the sealing pressure of the sealing ring is fixed, and the sealing pressure is increased, so that the sealing ring is prone to deformation and damage; and the sealing effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of full-automatic powder forming hydraulic presses, in particular to a multi-layer high-sealing structure of a full-automatic powder forming hydraulic press. Background Art

[0002] Fully automatic hydraulic powder forming presses utilize advanced electromechanical, hydraulic, pneumatic, and instrumentation control technology, integrating mechanical, electrical, hydraulic, pneumatic, and instrumentation control to provide a precise and repeatable pressing process. This type of equipment is widely used in industries such as powder metallurgy, ceramics, magnetic materials, and cemented carbide. It can process a variety of materials, including metal powders, magnetic powders, and ceramic powders, and is also suitable for automated pharmaceutical forming. The fully automatic hydraulic powder forming presses utilize independent hydraulic and electrical systems for highly automated operation. The system's built-in PLC programmable controller precisely controls multiple parameters, including pressure, speed, and position, ensuring consistent and stable product quality.

[0003] The working process of the fully automatic powder forming hydraulic press is inseparable from a core component, that is, the hydraulic cylinder. The hydraulic cylinder is very important as the core of power transmission. The hydraulic cylinder converts hydraulic energy into mechanical energy, drives the pressure head close to the forming die, and presses the powder into shape, which requires high sealing and durability.

[0004] The hydraulic cylinder of a common fully automatic powder forming hydraulic press has a simple sealing structure for sealing the piston rod at one end of the cylinder body. The sealing pressure of the sealing ring is fixed, and as the sealing pressure increases, the sealing ring is prone to deformation and damage, resulting in a reduction in the sealing effect. In view of this, the present application proposes a multi-layer high-sealing structure for a fully automatic powder forming hydraulic press. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a multi-layer high-sealing structure of a fully automatic powder molding hydraulic press, which has the advantages of adjusting the sealing pressure of the sealing ring used to seal the piston rod according to the use of the fully automatic powder molding hydraulic press. It solves the problem that the hydraulic cylinder of the common fully automatic powder molding hydraulic press has a simple sealing structure for sealing the piston rod at one end of the cylinder body, the sealing pressure of the sealing ring is fixed, and the sealing pressure increases, which makes the sealing ring prone to deformation and damage, resulting in reduced sealing effect.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a multi-layer high-sealing structure for a fully automatic powder forming hydraulic press, comprising a mounting top plate, a hydraulic cylinder fixedly mounted on the top of the mounting top plate, the hydraulic cylinder comprising a cylinder body, a multi-layer sealing assembly fixedly mounted on the bottom of the cylinder body, and a piston rod slidingly extending through the multi-layer sealing assembly;

[0007] The inner side wall of the multi-layer sealing assembly is provided with a fixed sealing groove, the inner side wall of the multi-layer sealing assembly is provided with a sliding sealing bevel groove, a fixed sealing ring is fixedly installed inside the multi-layer sealing assembly, a bevel sealing ring is slidably installed inside the sliding sealing bevel groove, a sealing airbag is fixedly installed on the top of the sliding sealing bevel groove, the top of the bevel sealing ring contacts the bottom of the sealing airbag, and the surface of the piston rod contacts the inner side walls of the sealing airbag, the bevel sealing ring and the fixed sealing ring.

[0008] Furthermore, two air tubes are fixedly mounted on the surface of the sealing airbag, and one end of the air tube extends to the bottom of the multi-layer sealing assembly.

[0009] Furthermore, an inflation one-way valve is fixedly installed at the bottom end of one of the air pipes, and a deflation one-way valve is fixedly installed at the bottom end of the other air pipe.

[0010] Furthermore, a sliding piston is slidably mounted on the inner side wall of the cylinder body, a sliding sealing ring is fixedly mounted on the surface of the sliding piston, and the top end of the piston rod is fixedly connected to the bottom end of the sliding piston.

[0011] Furthermore, an upper oil inlet pipe is fixedly installed on one side of the cylinder body close to the top, and a lower oil inlet pipe is fixedly installed on one side of the cylinder body close to the bottom.

[0012] Furthermore, four guide rods are fixedly mounted on the bottom of the mounting top plate, and a mounting base is fixedly mounted on the bottom end of the guide rods.

[0013] Furthermore, a forming pressure plate is fixedly installed at the bottom end of the piston rod, and sliding bearings are fixedly installed at the four corners of the top of the forming pressure plate, and the guide rod slides through the sliding bearings.

[0014] Furthermore, a forming pressure head is fixedly installed on the bottom of the forming pressing plate, a forming base is fixedly installed on the top of the mounting base, and a forming die is fixedly installed on the top of the forming base.

[0015] Compared with the prior art, the present invention provides a multi-layer high-sealing structure for a fully automatic powder forming hydraulic press, which has the following beneficial effects:

[0016] The multi-layer high sealing structure of the fully automatic powder forming hydraulic press is achieved by arranging a multi-layer sealing component on the top of the cylinder body, arranging a sealing airbag on the top of the sliding sealing inclined groove inside the multi-layer sealing component, and introducing gas into the sealing airbag to expand the sealing airbag, pressing the inclined sealing ring downward, thereby increasing the sealing pressure between the inclined sealing ring and the piston rod, and adjusting the sealing pressure of the inclined sealing ring. When the hydraulic cylinder is used at a high pressure, the sealing pressure is increased to improve the sealing performance. When the hydraulic cylinder is used at a low pressure, the sealing pressure is reduced to reduce the pressure on the inclined sealing ring and increase the service life of the inclined sealing ring. The hydraulic cylinder of the common fully automatic powder forming hydraulic press is solved. The sealing structure for sealing the piston rod at one end of the cylinder body is simple, the sealing pressure of the sealing ring is fixed, and the sealing pressure increases, which makes the sealing ring prone to deformation and damage, resulting in reduced sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a front cross-sectional view of the hydraulic cylinder of the utility model;

[0019] Figure 3 This is a front cross-sectional view of the multi-layer sealing assembly of the utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the multi-layer sealing component of the utility model.

[0021] In the figure: 1. Install the top plate; 2. Hydraulic cylinder; 21. Cylinder body; 22. Multi-layer sealing assembly; 23. Piston rod; 3. Fixed sealing groove; 4. Sliding sealing inclined groove; 5. Fixed sealing ring; 6. Bevel sealing ring; 7. Sealing airbag; 8. Air pipe; 9. Inflation check valve; 10. Deflation check valve; 11. Sliding piston; 12. Sliding sealing ring; 13. Upper oil inlet pipe; 14. Lower oil inlet pipe; 15. Guide rod; 16. Install the base; 17. Forming pressure plate; 171. Sliding bearing; 18. Forming pressure head; 19. Forming base; 20. Forming mold. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figures 1 to 4A multi-layer high-sealing structure of a fully automatic powder molding hydraulic press includes an installation top plate 1, a hydraulic cylinder 2 is fixedly installed on the top of the installation top plate 1, and the hydraulic cylinder 2 includes a cylinder body 21, a multi-layer sealing component 22 fixedly installed at the bottom of the cylinder body 21, and a piston rod 23 that slides through the multi-layer sealing component 22.

[0024] Among them, the inner wall of the multi-layer sealing component 22 is provided with a fixed sealing groove 3, the inner wall of the multi-layer sealing component 22 is provided with a sliding sealing bevel groove 4, the interior of the multi-layer sealing component 22 is fixedly installed with a fixed sealing ring 5, the interior of the sliding sealing bevel groove 4 is slidably installed with a bevel sealing ring 6, the top of the sliding sealing bevel groove 4 is fixedly installed with a sealing airbag 7, the top of the bevel sealing ring 6 is in contact with the bottom of the sealing airbag 7, and the surface of the piston rod 23 is in contact with the inner wall of the sealing airbag 7, the bevel sealing ring 6 and the fixed sealing ring 5.

[0025] Gas is filled into the sealing airbag 7, and the sealing airbag 7 expands, driving the inclined sealing ring 6 to move downward inside the sliding sealing inclined groove 4, so that the inclined sealing ring 6 is pressed inwardly against the surface of the piston rod 23, increasing the density of the piston rod 23, releasing the gas in the sealing airbag 7, causing the inclined sealing ring 6 to move upward, reducing the pressure on the inclined sealing ring 6.

[0026] At the same time, two air tubes 8 are fixedly mounted on the surface of the sealing airbag 7 , and one end of the air tube 8 extends to the bottom of the multi-layer sealing assembly 22 .

[0027] Among them, the bottom end of one of the trachea 8 is fixedly installed with an inflation check valve 9, and the bottom end of the other trachea 8 is fixedly installed with a deflation check valve 10. Air is inflated into the trachea 8 through the inflation check valve 9, and the gas in the sealed airbag 7 is released through the deflation check valve 10.

[0028] At the same time, a sliding piston 11 is slidably mounted on the inner wall of the cylinder body 21 , a sliding sealing ring 12 is fixedly mounted on the surface of the sliding piston 11 , and the top of the piston rod 23 is fixedly connected to the bottom of the sliding piston 11 .

[0029] The upper oil inlet pipe 13 is fixedly mounted on one side of the cylinder body 21 close to the top, and the lower oil inlet pipe 14 is fixedly mounted on one side of the cylinder body 21 close to the bottom.

[0030] At the same time, four guide rods 15 are fixedly mounted on the bottom of the mounting top plate 1 , and a mounting base 16 is fixedly mounted on the bottom end of the guide rods 15 .

[0031] The bottom end of the piston rod 23 is fixedly mounted with a forming plate 17 , and the four corners of the top of the forming plate 17 are fixedly mounted with sliding bearings 171 , and the guide rod 15 slides through the sliding bearings 171 .

[0032] Secondly, a forming press head 18 is fixedly mounted on the bottom of the forming pressing plate 17 , a forming base 19 is fixedly mounted on the top of the mounting base 16 , and a forming die 20 is fixedly mounted on the top of the forming base 19 .

[0033] When this embodiment is in use, oil is input into the cylinder body 21 through the upper oil inlet pipe 13, so that the sliding piston 11 moves downward, drives the piston rod 23 to move downward, and drives the forming pressure head 18 to press downward. Oil is input into the cylinder body 21 through the lower oil inlet pipe 14, so that the sliding piston 11 moves upward, drives the piston rod 23 to move upward, and drives the forming pressure head 18 to rise. When the output pressure of the hydraulic cylinder 2 is large, gas is filled into the sealing airbag 7, driving the inclined surface sealing ring 6 to move downward inside the sliding sealing inclined groove 4, so that the inclined surface sealing ring 6 is pressed inwardly against the surface of the piston rod 23, increasing the density of the piston rod 23. When the output pressure of the hydraulic cylinder 2 is small, the gas in the sealing airbag 7 is released, so that the inclined surface sealing ring 6 moves upward, reduces the pressure on the inclined surface sealing ring 6, and increases the service life of the inclined surface sealing ring 6.

[0034] The electrical components mentioned in this article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing public power connection technology is not described in detail in this article.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer high-sealing structure of a fully automatic powder forming hydraulic press, comprising a mounting top plate (1), characterized in that: A hydraulic cylinder (2) is fixedly mounted on the top of the mounting top plate (1), and the hydraulic cylinder (2) comprises a cylinder body (21), a multi-layer sealing assembly (22) fixedly mounted on the bottom of the cylinder body (21), and a piston rod (23) slidingly penetrating the multi-layer sealing assembly (22); The inner wall of the multi-layer sealing component (22) is provided with a fixed sealing groove (3), the inner wall of the multi-layer sealing component (22) is provided with a sliding sealing bevel groove (4), a fixed sealing ring (5) is fixedly installed inside the multi-layer sealing component (22), a bevel sealing ring (6) is slidably installed inside the sliding sealing bevel groove (4), a sealing airbag (7) is fixedly installed on the top of the sliding sealing bevel groove (4), the top of the bevel sealing ring (6) is in contact with the bottom of the sealing airbag (7), and the surface of the piston rod (23) is in contact with the inner wall of the sealing airbag (7), the bevel sealing ring (6) and the fixed sealing ring (5).

2. The multi-layer high sealing structure of a fully automatic powder forming hydraulic press according to claim 1, characterized in that: Two air tubes (8) are fixedly mounted on the surface of the sealing airbag (7), and one end of the air tube (8) extends to the bottom of the multi-layer sealing assembly (22).

3. The multi-layer high sealing structure of the fully automatic powder forming hydraulic press according to claim 2 is characterized in that: An inflation one-way valve (9) is fixedly installed at the bottom end of one of the air pipes (8), and a deflation one-way valve (10) is fixedly installed at the bottom end of the other air pipe (8).

4. The multi-layer high sealing structure of the fully automatic powder forming hydraulic press according to claim 1 is characterized in that: A sliding piston (11) is slidably mounted on the inner wall of the cylinder body (21), a sliding sealing ring (12) is fixedly mounted on the surface of the sliding piston (11), and the top end of the piston rod (23) is fixedly connected to the bottom end of the sliding piston (11).

5. The multi-layer high sealing structure of the fully automatic powder forming hydraulic press according to claim 1 is characterized in that: An upper oil inlet pipe (13) is fixedly installed on one side of the cylinder body (21) close to the top, and a lower oil inlet pipe (14) is fixedly installed on one side of the cylinder body (21) close to the bottom.

6. The multi-layer high sealing structure of the fully automatic powder forming hydraulic press according to claim 1 is characterized in that: Four guide rods (15) are fixedly mounted on the bottom of the mounting top plate (1), and a mounting base (16) is fixedly mounted on the bottom end of the guide rods (15).

7. The multi-layer high sealing structure of the fully automatic powder forming hydraulic press according to claim 6, characterized in that: A forming press plate (17) is fixedly mounted on the bottom end of the piston rod (23), and sliding bearings (171) are fixedly mounted at the four corners of the top of the forming press plate (17), and the guide rod (15) slides through the sliding bearings (171).

8. The multi-layer high sealing structure of the fully automatic powder forming hydraulic press according to claim 7, characterized in that: A forming press head (18) is fixedly mounted on the bottom of the forming press plate (17), a forming base (19) is fixedly mounted on the top of the mounting base (16), and a forming die (20) is fixedly mounted on the top of the forming base (19).

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