Press machine gas-liquid pressurizing main cylinder

Abstract

The utility model relates to the technical field of press machine equipment, in particular to a press machine gas-liquid pressurizing main cylinder which comprises a first piston rod, a first cylinder body, a second cylinder body, a second piston rod, a prefill valve and a pressing head. And an oil inlet hole I and an oil inlet hole II are formed in the outer wall of the prefill valve. By arranging the prefill valve and the pressure head and adopting the double-group cylinder design, during use, the large-diameter integrated prefill valve is opened, so that the oil inlet hole I and the oil inlet hole II are quickly filled with oil, the piston rod I and the piston rod II can quickly reciprocate, and meanwhile, the pressure head with an air cavity can be matched with an air pressure cavity, so that the oil filling efficiency is improved. The air pressure cavity can be subjected to negative pressure air exhaust operation through the air cavity, then the second piston rod can be rapidly recycled, the pressure head can rapidly move in a reciprocating mode, and then the sustainable and rapid pressure applying effect of the press is better.

Description

Technical Field

[0001] The utility model relates to the technical field of press equipment, in particular to a gas-liquid pressurized main cylinder of a press. Background Art

[0002] A press (including punching machines and hydraulic presses) is a versatile press with an exquisite structure. It has the characteristics of wide application and high production efficiency. The press can be widely used in cutting, punching, blanking, bending, riveting and forming processes. The metal blank is processed into parts by applying strong pressure to the metal to cause plastic deformation and fracture. When the mechanical press is working, the motor drives the large pulley (usually also serves as a flywheel) through the V-belt, and drives the crank slider mechanism through the gear pair and clutch, so that the slider and the punch go down in a straight line. After the forging work of the mechanical press is completed, the slider moves upward, the clutch automatically disengages, and the automatic device on the crank shaft is turned on, so that the slider stops near the top dead center.

[0003] At present, presses often use a single set of hydraulic cylinders for pressure driving. Although it can provide better pressure driving, when the hydraulic cylinder needs to be driven quickly multiple times, the existing hydraulic cylinder cannot meet the use requirements, and after long-term use, it is easy to be damaged, which is not conducive to the operation of the press. Summary of the invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a gas-liquid booster main cylinder for a press machine, so as to solve the technical problem that the existing press machines often use a single set of hydraulic cylinders for pressure driving. Although it can provide better pressure driving, when the hydraulic cylinders need to be driven quickly multiple times, the existing hydraulic cylinders cannot meet the use requirements, and after long-term use, they are prone to damage, which is not conducive to the operation of the press.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The cam is secured to the interior of the cylinder with an axial thrust which is adapted to engage the camshaft and to provide a pressure relief valve which is provided to the cylinder when the camshaft is in contact with the valve body.

[0007] Furthermore, the mounting flange is movably sleeved on the outside of the piston rod one, and mounting bolts three are provided between the mounting flange and the cylinder body one for fixing.

[0008] Furthermore, a sealing plug 1 is provided between the cylinder body 1 and the filling valve for sealing, and a sealing plug 2 and a sealing plug 3 are provided between the cylinder body 1 and the piston rod 1 for sealing.

[0009] Furthermore, a sealing ring is provided between the filling valve and the second piston rod for sealing, a sealing ring is provided between the second cylinder body and the first piston rod for sealing, and a sealing ring is embedded in the inner wall of the second cylinder body for sealing between it and the second piston rod.

[0010] Furthermore, a sealing ring 3 is provided between the cylinder body 1 and the mounting flange for sealing.

[0011] Furthermore, a sealing ring four, a sealing ring five and a dustproof ring are arranged between the piston rod one and the mounting flange to seal and prevent dust.

[0012] Beneficial effects of the utility model:

[0013] By providing a filling valve and a pressure head and adopting a double-cylinder design, when in use, the large-diameter integrated filling valve is opened to allow the oil inlet hole one and the oil inlet hole two to be quickly filled with oil, thereby allowing the piston rod one and the piston rod two to move back and forth quickly. At the same time, the pressure head with an air pressure cavity can be used in conjunction with the air pressure cavity to perform a negative pressure evacuation operation on the air pressure cavity through the air cavity, thereby allowing the piston rod two to be quickly recovered, allowing the pressure head to move back and forth quickly, thereby making the sustainable and rapid pressure application effect of the press better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are 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.

[0015] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the gas-liquid booster main cylinder of the press machine;

[0016] Figure 2 The embodiment of the gas-liquid booster main cylinder of the press machine Figure 1 Schematic diagram of the local structure in the middle A direction;

[0017] Figure 3 It is a side view schematic diagram of an embodiment of the gas-liquid booster main cylinder of the press machine;

[0018] Figure 4 This is a schematic cross-sectional view of the pressure head of the embodiment of the gas-liquid booster main cylinder of the press machine;

[0019] Figure 5 It is a schematic side view of the pressure head of the gas-liquid booster main cylinder embodiment of the press machine.

[0020] Explanation of the markings in the figure: 1. Sealing ring; 3. Mounting bolt one; 4. Sealing plug one; 7. Sealing plug two; 8. Sealing plug three; 9. Mounting bolt two; 11. Sealing ring one; 12. Sealing ring two; 14. Sealing ring three; 16. Sealing ring four; 17. Sealing ring five; 19. Mounting bolt three; 20. Dust ring; 21. Mounting bolt four; 22. Mounting bolt five; 31. Filling valve; 32. Cylinder body one; 33. Piston rod one; 34. Cylinder body two; 35. Piston rod two; 36. Mounting flange; 37. Sealing sleeve; 38. Pressure block; 39. Air cavity. DETAILED DESCRIPTION

[0021] The following will be combined with the attached embodiment of the present utility model Figure 1-5 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. 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.

[0022] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0023] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0024] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0025] See also Figure 1-5As shown, a press machine gas-liquid booster main cylinder includes: a piston rod 1 33, a cylinder body 1 32, a cylinder body 2 34, a piston rod 2 35, a filling valve 31 and a pressure head 38, the piston rod 1 33 is arranged inside the cylinder body 1 32, the filling valve 31 is fixed to one side of the cylinder body 1 32 by means of a mounting bolt 5 22, the outer wall of the filling valve 31 is provided with an oil inlet hole 1 and an oil inlet hole 2, the cylinder body 2 34 is fixed to the inside of the piston rod 1 33 by means of a mounting bolt 29, the piston rod 2 35 is fixed to the filling valve 31 by means of a mounting bolt 3 On one side, the oil inlet hole 1 is connected with the inner cavity of the piston rod 1 33, and the oil inlet hole 2 is connected with the inner cavity of the piston rod 2 35. The piston rod 2 35 is arranged inside the cylinder body 2 34. An air pressure cavity is formed between the inner side of the piston rod 1 33 and the cylinder body 2 34. A sealing sleeve 37 is provided on the external limit sleeve of the end of the piston rod 1 33 away from the filling valve 31. The sealing sleeve 37 and the pressure head 38 are fixed by installing bolts 4 21. An air cavity 39 is opened inside the pressure head 38, and the air cavity 39 is connected to the air pressure cavity. The pressure head 38 is externally connected to a vacuum device.

[0026] Specifically, by providing a filling valve 31 and a pressure head 38 and adopting a double-cylinder design, when in use, the large-diameter integrated filling valve 31 is opened to allow the oil inlet holes 1 and 2 to be quickly filled with oil, thereby allowing the piston rod 1 33 and the piston rod 2 35 to move back and forth quickly. At the same time, the pressure head 38 with the air pressure cavity 39 can be used in conjunction with the air pressure cavity, and the air pressure cavity can be negatively evacuated through the air cavity 39, thereby allowing the piston rod 2 35 to be quickly recovered, allowing the pressure head 38 to move back and forth quickly, thereby making the sustainable rapid pressure effect of the press better.

[0027] In this embodiment, the mounting flange 36 is movably sleeved on the outside of the piston rod 33, and mounting bolts 3 19 are provided between the mounting flange 36 and the cylinder body 32 for fixing.

[0028] Specifically, installing the mounting flange 36 to a suitable position can effectively fix the device and limit the position of the cylinder body 32 .

[0029] A sealing plug 14 is provided between the cylinder body 32 and the filling valve 31 for sealing, a sealing plug 27 and a sealing plug 38 are provided between the cylinder body 32 and the piston rod 33 for sealing, a sealing ring 1 is provided between the filling valve 31 and the piston rod 2 35 for sealing, a sealing ring 314 is provided between the cylinder body 32 and the mounting flange 36 for sealing, a sealing ring 4 16, a sealing ring 5 17 and a dust ring 20 are provided between the piston rod 33 and the mounting flange 36 for sealing and dustproof, a sealing ring 11 is provided between the cylinder body 2 34 and the piston rod 1 33 for sealing, and a sealing ring 212 is embedded in the inner wall of the cylinder body 2 34 for sealing between it and the piston rod 2 35.

[0030] Specifically, sealing plug 1 4, sealing plug 2 7 and sealing plug 3 8 are used to make the master cylinder, that is, the combination of cylinder body 1 32 and piston rod 1 33, more sealed, and it is not easy for foreign dust and other impurities to enter the master cylinder to affect the use of hydraulic oil and the operation of piston rod 1 33. The sealing ring 1 is used to make the sealing between the filling valve 31 and the piston rod 2 35 better. The sealing ring 3 14 is used to make it difficult for a gap to appear between the flange and the cylinder body 1 32. The sealing ring 4 16, the sealing ring 5 17 and the dust ring 20 are used to make the sealing performance between the flange and the piston rod 1 33 better, so as to avoid the reciprocating movement of the piston rod 1 33 and the generation of friction gaps with its surface. In summary, compared with the prior art, the booster master cylinder has at least the following beneficial effects: by providing a filling valve 31 and a pressure head 38 and adopting a double-cylinder design, when in use, the large-diameter integrated filling valve 31 is opened to allow the oil inlet hole 1 and the oil inlet hole 2 to be quickly filled with oil, thereby allowing the piston rod 1 33 and the piston rod 2 35 to move back and forth quickly, and at the same time, the pressure head 38 with the air cavity 39 can be used in conjunction with the air pressure cavity, and the air pressure cavity can be negatively evacuated through the air cavity 39, thereby allowing the piston rod 2 35 to be quickly recovered, and the pressure head 38 to move back and forth quickly, thereby making the sustainable rapid pressure effect of the press better.

[0031] 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 various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements 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 gas-liquid booster main cylinder for a press, characterized in that: include: A piston rod (33), a cylinder body (32), a cylinder body (34), a piston rod (35), a filling valve (31) and a pressure head (38), wherein the piston rod (33) is arranged inside the cylinder body (32), the filling valve (31) is fixed to one side of the cylinder body (32) by means of a mounting bolt (22), an outer wall of the filling valve (31) is provided with an oil inlet hole (1) and an oil inlet hole (2), the cylinder body (34) is fixed to the inside of the piston rod (33) by means of a mounting bolt (9), and the piston rod (35) is fixed to one side of the filling valve (31) by means of a mounting bolt (3). The oil inlet hole 1 is connected to the inner cavity of the piston rod 1 (33), and the oil inlet hole 2 is connected to the inner cavity of the piston rod 2 (35). The piston rod 2 (35) is arranged inside the cylinder body 2 (34). An air pressure cavity is formed between the inner side of the piston rod 1 (33) and the cylinder body 2 (34). A sealing sleeve (37) is provided on the outer limit sleeve of the end of the piston rod 1 (33) away from the filling valve (31). The sealing sleeve (37) is fixed to the pressure head (38) by installing bolts 4 (21). An air cavity (39) is opened inside the pressure head (38), and the air cavity (39) is connected to the air pressure cavity.

2. A press machine gas-liquid booster main cylinder according to claim 1, characterized in that: The outer movable sleeve of the piston rod 1 (33) is provided with a mounting flange (36), and mounting bolts 3 (19) are arranged between the mounting flange (36) and the cylinder body 1 (32) for fixing.

3. A press machine gas-liquid booster main cylinder according to claim 2, characterized in that: A sealing plug 1 (4) is provided between the cylinder body 1 (32) and the filling valve (31) for sealing, and a sealing plug 2 (7) and a sealing plug 3 (8) are provided between the cylinder body 1 (32) and the piston rod 1 (33) for sealing.

4. A press machine gas-liquid booster main cylinder according to claim 3, characterized in that: A sealing ring (1) is provided between the filling valve (31) and the second piston rod (35) for sealing, a sealing ring (11) is provided between the second cylinder body (34) and the first piston rod (33) for sealing, and a sealing ring (12) is embedded in the inner wall of the second cylinder body (34) for sealing between the second cylinder body (34) and the second piston rod (35).

5. A gas-liquid booster main cylinder for a press machine according to claim 4, characterized in that: A sealing ring 3 (14) is provided between the cylinder body 1 (32) and the mounting flange (36) for sealing.

6. A press machine gas-liquid booster main cylinder according to claim 2, characterized in that: A sealing ring (4) (16), a sealing ring (5) (17) and a dustproof ring (20) are provided between the piston rod (33) and the mounting flange (36) to provide sealing and dustproofing.

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