Micro-motion pressure cylinder

Abstract

Disclosed in the present invention is a micro-motion pressure cylinder. A hollow sealed container is formed by a cylinder body and a deformable plate, a fluid cavity is formed in the hollow sealed container, and fluid is present in the fluid cavity; a hole is formed in the cylinder body to allow for flowing of the fluid; areas of the deformable plate adjacent to the cylinder body are elastic deformation transition areas, and the middle area of the deformable plate is a pressure area; a pressure regulating device is provided to regulate fluid pressure; and under the action of fluid pressure, the elastic deformation transition areas elastically deform and push the middle pressure area of the deformable plate away from the cylinder body and generate pressure. The use and maintenance are simple, and energy loss is small due to small fluid flow, and a low-power pump can be used for driving to reach a large pressure.

Description

A micro-pressure cylinder Technical Field

[0001] The invention relates to pressure processing equipment, in particular to a micro-motion pressure cylinder. Background Art

[0002] In the fields of die-casting, injection molding, metal surface stamping, filter pressing, etc., many occasions require pressures of hundreds of tons, thousands of tons, or even tens of thousands of tons. In the existing technology, hydraulic cylinders are usually used, and hydraulically driven pistons and piston rods are used as driving elements. Hydraulic drive involves sealing issues, especially in pressure environments above 30 MPa. The life of the sealing ring and the system manufacturing accuracy are particularly challenging. The replacement of the sealing ring is very troublesome. When the elbow clamping mechanism is used in injection molding and die-casting machines, pressures ranging from tens of tons to tens of thousands of tons can be generated. However, the elbow mechanism has many parts and a complex structure, and the manufacturing cost is particularly high. Currently, there is no particularly simple way to solve the above problems.

[0003] Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a micro-motion pressure cylinder, which can effectively solve the deficiencies in the prior art.

[0005] The present invention is realized by the following technical solutions: a micro-pressure cylinder, which is composed of a cylinder body and a deformation plate

[0006] It is a hollow sealed container with a fluid cavity inside. There is fluid in the fluid cavity and a hole on the cylinder body for the fluid to flow.

[0007] The adjacent area between the deformation plate and the cylinder is the elastic deformation transition zone, and the middle area is the pressure zone.

[0008] The pressure regulating device regulates the fluid pressure, and the elastic deformation transition zone undergoes elastic deformation under the action of the fluid pressure.

[0009] The deformation pushes the middle pressure area of ​​the deformed plate away from the cylinder and generates pressure.

[0010] As a preferred technical solution, the cylinder body and the deformation plate are welded together.

[0011] As a preferred technical solution, the hollow sealed container is composed of a cylinder body and a deformable plate with a cylinder body joint area.

[0012] As a preferred technical solution, the cylinder body and the deformed plate with the cylinder body joint area can be welded, riveted, screwed,

[0013] Fastening or screw assembly.

[0014] As a preferred technical solution, the thickness of the pressure zone portion of the deformation plate is greater than that of the transition zone of the elastic deformation zone.

[0015] As a preferred technical solution, the fluid in the pressure cylinder is gas or liquid.

[0016] As a preferred technical solution, the pressure regulating device is an air pump, a water pump or an oil pump.

[0017] As a preferred technical solution, the shear strength of the interface between the elastic deformation transition zone of the micro-movement pressure plate and the cylinder zone and pressure zone can withstand the fluid pressure borne by the elastic deformation transition zone.

[0018] As a preferred technical solution, the shape of the contact pressure zone is circular, square or ring-shaped.

[0019] As a preferred technical solution, a pressure guide plate is provided on the outer side of the deformation plate and adjacent to the deformation plate to receive and transmit the pressure of the micro-motion pressure cylinder.

[0020] The beneficial effects of the present invention are: the sealed pressure cylinder composed of the micro-movement pressure plate and the reference plate or two micro-movement pressure plates serves as a pressure cylinder, does not require seals, is simple to use and maintain, and because the fluid flow is extremely small, the energy loss is very small, and a small power pump can be used to drive a high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 is a schematic diagram of the micro-motion pressure cylinder structure;

[0023] Figure 2 is a schematic diagram of the micro-movement of the pressure zone after the fluid in the micro-movement pressure cylinder cavity is pressurized;

[0024] FIG3 is a schematic diagram of a screw-pressed cylinder and a deformed plate with a cylinder joint area (screw assembly) according to the present invention;

[0025] FIG4 is a schematic diagram of the screw-compression cylinder and the deformation plate with the cylinder joint area (screw assembly) of the structure of FIG3 of the present invention, in which the elastic deformation area deforms after the fluid is pressurized, and the fitting pressure area shifts ΔL;

[0026] FIG5 is a schematic diagram of the welding structure of the cylinder body and the deformation plate of the present invention;

[0027] FIG6 is a schematic diagram showing the connection (welding) between the hollow annular cylinder body and the annular deformation plate in the cylinder body connection area in the pressure zone of the present invention;

[0028] FIG7 is a schematic diagram of the pressure inside the cavity of the welded sealed double-deformation plate of the present invention;

[0029] FIG8 is a schematic diagram of the matching spherical swing mechanism and the bevel pre-compression mechanism of the present invention;

[0030] FIG9 is a schematic diagram of a three-platen machine according to the present invention using a double-deformation plate pressure cylinder mechanism;

[0031] FIG10 is a schematic diagram of the structure of a three-platen machine of the present invention using screws to tighten and seal the pressure cylinder;

[0032] FIG11 is a schematic diagram of a three-plate machine screw-tightening sealing pressure cylinder according to the present invention, wherein the cylinder body is formed as three plates;

[0033] FIG12 is a top view of the three-plate machine mechanism of FIG9, FIG10, and FIG11 of the present invention;

[0034] FIG13 is a schematic diagram of the structure of a two-platen machine according to the present invention, wherein the pressure zone is a hollow annular welded sealed pressure cylinder;

[0035] FIG14 is a schematic diagram of a pressure cylinder with a cylinder body and a deformed plate (welded) in the joint area with the cylinder body according to the present invention;

[0036] FIG15 is a schematic diagram of a pressure cylinder (welded) with a cylinder body and a deformation plate in the joint area with the cylinder body according to the present invention, in which the elastic deformation area deforms after the fluid is pressurized, and the pressure area shifts ΔL;

[0037] Description of the drawings: 1. Cylinder body; 2. Deformed plate; 3. Welding seam; 4. Deformed plate with cylinder body joint area (assembled with screws); 5. Tightening screw; 6. Deformation plate with cylinder joint area (welded); 7. Annular cylinder; 8. Annular deformation plate with cylinder joint area (welded); 9. Concave spherical swing seat; 10. Convex spherical swing plate; 11. Passive bevel; 12. Active bevel; 13. Pressure guide plate; 14. Gate assembly seat; 15. Gate assembly seat track; 16. Two-plate moving guide rail; 17. Two-plate moving fixed guide rail; 18. Two plates; 19. Mould beam; 20. One plate; 21. Fixed mould; 22. Moving mould; 23. Three plates; 24. Corinthian column; 25. One plate of Corinthian column structure; 26. Two plates of Corinthian column structure; 27. Braking mechanism; 28. Active bevel lifting cylinder; a. Deformation plate pressure zone; b. Elastic deformation transition zone; c. Cylinder joint area. DETAILED DESCRIPTION

[0038] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0039] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0040] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0041] In addition, in the description of the present invention, “a plurality of” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0042] Terms such as "upper", "above", "lower", and "below" used in the present invention to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative position may be intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, if the device in the figure is turned over, the unit described as being "below" or "beneath" other units or features will be located "above" the other units or features. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0043] In the present invention, unless otherwise expressly specified or limited, terms such as "disposed," "socketed," "connected," "through," and "inserted" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly specified or limited. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] Example 1

[0045] As shown in Figures 3 and 4, a hollow sealed pressure cylinder is formed by a cylinder body 1 and a deformation plate (screw assembly) 4 with a cylinder body joint area. The thickness of the pressure zone in the middle of the deformation plate is greater than the thickness of the transition zone and is flush with the cylinder body joint area. The pressure cylinder is filled with hydraulic oil. There is a hole on the pressure cylinder body to connect the oil pump. The oil pump can generate a pressure of 30 MPa. The pressure on the elastic deformation transition zone b causes the elastic deformation transition zone b to produce elastic deformation, causing the deformation plate pressure zone a to translate ΔL. The deformation plate pressure zone a presses against the pressure guide plate 13. The pressure it bears acts directly on the pressure guide plate. The elastic deformation zone length b = 10 mm, thickness f = 0.5 mm, ΔL = 0.05 mm, and oil cavity depth g = 0.1 mm. The fluid pressure acting on the de section is 300 N per mm in the width direction, and the shear stress at the two points de is 150 N per mm respectively. The spring steel 65 mm is used, and the spring steel with the lowest shear stress has a shear stress of 340 N / mm. 2 , 0.5mm 2 The shear strength is 170N, greater than 150N. When using spring steel with a shear stress of 1050Mpa or more, this structure can withstand a maximum fluid pressure of 100Mpa. The bonding pressure zone measures 1m*1m. At 30Mpa, it can generate 3,000 tons of pressure, and at 100Mpa, it can generate 10,000 tons of pressure. A 0.05mm pressure bonding movement requires only 50g of hydraulic oil, all of which can be accomplished with a low-power pump.

[0046] Example 2

[0047] As shown in FIG7 , the difference from Example 1 is that it is composed of two deformed plates (welded) 6 with cylinder joint areas and a weld 3. When the intermediate fluid pressure increases, the pressure guide plates 13 on both sides are stressed, and the total movement distance is 2ΔL.

[0048] Example 3

[0049] As shown in Figures 7, 8, 9 and 12, a three-plate die-casting or injection molding system is provided. A plate 20, a three-plate mold beam 19 forms a force-bearing frame. A two-plate movable fixed guide rail 17 is provided below, and a two-plate movable guide rail 16 is provided above. The two plates 18 are mounted on the two-plate movable guide rail 16. A fixed mold 21 is provided on a plate 20, and a movable mold 22 is provided on the two plates 18. A gate assembly seat 14 is mounted on the gate assembly seat guide rail 15. The gate assembly seat guide rail 15 moves in the same direction as the two-plate movable guide rail. The moving direction of the rail and the direction of the clamping force are perpendicular to the mold loading plane of the first plate 20 and the second plate 18 and are parallel to the mold loading plane. The gate assembly seat 14 can be moved to the second plate 18 and the third plate 23 for clamping operation. The gate assembly seat 14 can also be moved outside the machine so that the second plate can move the dynamic guide rail to drive the second plate 18 and the dynamic mold 22 to move to the third plate to implement mold opening and taking out operations. The gate assembly seat 14 is equipped with a concave spherical swing seat 9, a convex spherical swing plate 10, a passive inclined wedge 11, an active inclined wedge 12, and an active inclined wedge lift. When the gate assembly seat 14 is moved between the second plate 18 and the third plate 23 on the gate assembly seat guide rail, the active wedge lifting cylinder descends and squeezes the passive wedge 11 and the convex spherical swing pressure plate 10, the concave spherical swing seat 9, so that the double deformation plate micro-pressure cylinder, the gate assembly seat 14, the active wedge 12, the passive wedge 11, the convex spherical swing plate 10, the concave spherical swing seat 9, the second plate 18, the movable mold 22, the fixed mold 21, and the like are pressed together. Between the three plates 23 and the one plate 20, the plunger pump is started again to pump the pressure oil into the oil chamber of the micro-motion pressure cylinder. At this time, the three plates 23 and the gate assembly seat respectively serve as the clamping force transmission plates to finally transmit the clamping force to the movable mold 22 and the fixed mold 21. Figure 12 is a top view of the pattern. The state in the figure includes the gate assembly seat 14, the active inclined wedge 12, the passive inclined wedge 11, the convex spherical swing plate 10, and the concave spherical swing seat 9 being moved to the outside of the machine for mold opening operations.

[0050] Example 4

[0051] As shown in FIG3 and FIG10, the difference from Example 3 is that the screw compression belt cylinder body joint area deformation plate pressure cylinder of FIG3 is used to replace the welding seal double deformation plate pressure cylinder of FIG7.

[0052] Example 5

[0053] As shown in FIG12 , the difference from the fourth embodiment is that the cylinder body 1 is directly used to replace the three plates 23, making the overall structure simpler.

[0054] Example 6

[0055] As shown in Figures 7 and 14, Figure 14 is a schematic diagram of the clamping of a two-plate injection die-casting machine. The Corinthian column 24 is equipped with a Corinthian column plate 25 and a Corinthian column plate 26. The Corinthian column plate 25 is equipped with a fixed mold 21, and the Corinthian column plate 26 is equipped with a movable mold 22, a Corinthian column plate 26, which drives the movable mold 22, closes the fixed mold 21, and the rear brake mechanism 27 and the hollow annular micro-motion pressure cylinder shown in Figure 6 are close to the Corinthian column plate 26 and the Corinthian column is clamped by the brake mechanism 27. Then the hydraulic oil pump is started to inject pressure oil into the micro-motion pressure cylinder. At this time, the brake mechanism and the Corinthian column plate 26 respectively serve as clamping pressure conduction plates to conduct the clamping pressure to the movable mold 22 and the fixed mold 21.

[0056] Example 7

[0057] As shown in FIG6 , the structure is composed of a deformed plate (welded) 6 with a cylinder joint area and an annular cylinder 7 , which are compressed by a compression screw 5 .

[0058] Example 8

[0059] As shown in FIG7 , it is composed of an annular deformation plate (weld) 8 with a cylinder body joint area, an annular cylinder body 7 and a weld 3 .

[0060] Example 9

[0061] As shown in Figure 14, the cylinder body 1 and the deformation plate (welded) 6 with the cylinder body joint area are composed and connected by a weld 3. The weld 3 connects the two into a sealed container. The pressure guide plate 13 is attached to the deformation plate (welded) 6 with the cylinder body joint area. Figure 15 is a schematic diagram of the elastic deformation transition zone b undergoing elastic deformation after the fluid in the cavity is pressurized, and the pressure zone a of the deformation plate translates △L. The pressure guide plate 13 is not drawn in the figure.

[0062] The cylinder bodies 1 in Examples 1, 7 and 9 are different in details, but since the differences are not significant, they are all numbered uniformly for simplicity.

[0063] The beneficial effects of the present invention are: the sealed pressure cylinder composed of the micro-movement pressure plate and the reference plate or two micro-movement pressure plates serves as a pressure cylinder, does not require seals, is simple to use and maintain, and because the fluid flow is extremely small, the energy loss is very small, and a small power pump can be used to drive a high pressure.

[0064] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A micro-motion pressure cylinder, characterized in that: A hollow sealed container is composed of a cylinder body and a deformation plate, and the inner part is a fluid cavity, in which there is fluid, and there are holes on the cylinder body for the fluid to flow. The adjacent area between the deformation plate and the cylinder body is an elastic deformation transition zone, and the middle area is a pressure zone. A pressure regulating device is provided to regulate the fluid pressure. Under the action of the fluid pressure, the elastic deformation transition zone undergoes elastic deformation and pushes the middle pressure area of ​​the deformation plate away from the cylinder body to generate pressure.

2. The micro-motion pressure cylinder according to claim 1, characterized in that: The cylinder body and the deformation plate are welded.

3. The micro-motion pressure cylinder according to claim 1, characterized in that: The hollow sealed container consists of a cylinder body and a deformed plate with a cylinder body joint area.

4. The micro-motion pressure cylinder according to claim 3, characterized in that: The cylinder body and the deformed plate with the cylinder body joint area can be welded, riveted, screwed or screwed together.

5. The micro-motion pressure cylinder according to claim 1, characterized in that: The thickness of the pressure zone portion of the deformation plate is greater than that of the transition zone of the elastic deformation zone.

6. The micro-motion pressure cylinder according to claim 1, characterized in that: The fluid in the pressure cylinder is gas or liquid.

7. The micro-motion pressure cylinder according to claim 1, characterized in that: The pressure regulating device is an air pump, a water pump or an oil pump.

8. The micro-motion pressure cylinder according to claim 1, characterized in that: The shear strength at the junction of the elastic deformation transition zone of the micro-movement pressure plate and the cylinder zone and the pressure zone can withstand the fluid pressure borne by the elastic deformation transition zone.

9. The micro-motion pressure cylinder according to claim 1, characterized in that: The shape of the fitting pressure area is circular, square or ring.

10. The micro-motion pressure cylinder according to claim 1, characterized in that: A pressure guide plate is arranged outside the deformation plate and adjacent to the deformation plate to receive and transmit the pressure of the micro-motion pressure cylinder.

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