Micro-motion pressure cylinder

Abstract

A hollow sealed container is composed of a cylinder body and a deformation plate, a fluid cavity is formed in the hollow sealed container, fluid is contained in the fluid cavity, a hole is formed in the cylinder body for the fluid to flow, the adjacent area of the deformation plate and the cylinder body is an elastic deformation transition area, the middle area is a pressure area, and a pressure adjusting device is arranged for adjusting the pressure of the fluid. Under the action of fluid pressure, the elastic deformation transition area elastically deforms and pushes the middle pressure area of the deformation plate away from the cylinder body, and pressure is generated. And due to the fact that the fluid flow is extremely small, energy loss is very small, and large pressure can be achieved through driving of a small-power pump.

Description

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 prior art, hydraulic cylinders are usually used, and hydraulically driven pistons and piston rods are used as driving elements. Hydraulic drive involves sealing issues, especially under pressure environments above 30Mpa. The life of the sealing ring and the system manufacturing accuracy are particularly challenging, and 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, but the elbow mechanism has many parts and a complex structure, and the manufacturing cost is particularly high. There is currently no particularly simple way to solve the above problems. Summary of the invention

[0003] 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.

[0004] The present invention is realized through the following technical scheme: a micro-motion pressure cylinder, which is composed of a cylinder body and a deformation plate to form a hollow sealed container, the inner part is a fluid cavity, the fluid cavity contains 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. There is a pressure regulating device 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.

[0005] As a preferred technical solution, the cylinder body and the deformation plate are welded.

[0006] 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.

[0007] As a preferred technical solution, the cylinder body and the deformed plate with the cylinder body joint area can be welded, riveted, screwed or screwed together.

[0008] As a preferred technical solution, the thickness of the pressure zone portion of the deformation plate is greater than the transition zone of the elastic deformation zone.

[0009] As a preferred technical solution, the fluid in the pressure cylinder is gas or liquid.

[0010] As a preferred technical solution, the pressure regulating device is an air pump, a water pump or an oil pump.

[0011] As a preferred technical solution, the shear strength of the micro-motion pressure plate at the junction of the elastic deformation transition zone and the cylinder zone and the pressure zone can withstand the fluid pressure borne by the elastic deformation transition zone.

[0012] As a preferred technical solution, the shape of the fitting pressure zone is circular, square or ring-shaped.

[0013] 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.

[0014] The beneficial effects of the present invention are: the sealed pressure cylinder composed of the micro-motion pressure plate and the reference plate or two micro-motion pressure plates is used 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

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0016] Figure 1 Schematic diagram of the micro-motion pressure cylinder structure;

[0017] Figure 2 Schematic diagram of micro-motion of the pressure zone after the fluid in the micro-motion pressure cylinder cavity is pressurized;

[0018] Figure 3 It is a schematic diagram of the screw-pressed cylinder body and the deformed plate with the cylinder body joint area (screw assembly) of the present invention;

[0019] Figure 4 For the present invention Figure 3 The screw-compressed cylinder and the deformation plate with the cylinder joint area (screw assembly) of the structure are deformed in the elastic deformation area after the fluid is compressed, and the schematic diagram of the translation △L of the fitting pressure area;

[0020] Figure 5 It is a schematic diagram of the welding structure of the cylinder body and the deformation plate of the present invention;

[0021] Figure 6 The pressure zone of the present invention is a schematic diagram of the combination of a hollow annular cylinder and an annular deformation plate (welding) in the cylinder joint zone;

[0022] Figure 7 It is a schematic diagram of the pressure in the cavity of the welded sealed double deformation plate of the present invention;

[0023] Figure 8 It is a schematic diagram of the matching spherical swing mechanism and the bevel pre-pressing mechanism of the present invention;

[0024] Fig. 9 A schematic diagram of a three-platen machine of the present invention using a double-deformation plate pressure cylinder mechanism;

[0025] Fig.10 This is a schematic diagram of the structure of the three-plate machine of the present invention using screws to tighten the sealed pressure cylinder;

[0026] Fig.11 This is a three-plate machine screw-tightening sealing pressure cylinder of the present invention, with the cylinder body serving as a three-plate schematic diagram;

[0027] Fig.12 The three-plate machine mechanism of the present invention Fig. 9 , Fig.10 , Fig.11 A top view of

[0028] Fig.13 This is a schematic diagram of the structure of a two-plate machine of the present invention, in which the pressure zone is a hollow annular welded sealed pressure cylinder;

[0029] Fig.14 It is a schematic diagram of a pressure cylinder of the present invention with a cylinder body and a deformation plate (welded) with a cylinder body joint area;

[0030] Fig.15 It is a schematic diagram of a pressure cylinder with a cylinder body and a deformation plate (welded) with a cylinder body joint area of ​​the present invention, in which the elastic deformation area deforms after the fluid is compressed, and the pressure area translates ΔL; Description of the drawings:

[0032] 1. Cylinder; 2. Deformation plate; 3. Weld; 4. Deformation plate with cylinder joint area (screw assembly); 5. Pressing screw; 6. Deformation plate with cylinder joint area (welding); 7. Annular cylinder; 8. Annular deformation plate with cylinder joint area (welding); 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 Type assembly seat track; 16, two-plate moving guide rail; 17, two-plate moving fixed guide rail; 18, two plates; 19, mold beam; 20, one plate; 21, fixed mold; 22, movable mold; 23, three plates; 24, Corinthian column; 25, Corinthian column structure one plate; 26, Corinthian column structure two plate; 27, brake mechanism; 28, active oblique lifting cylinder; a, deformation plate pressure zone; b, elastic deformation transition zone; c, cylinder body joint zone. DETAILED DESCRIPTION

[0033] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0034] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0035] In the description of the present invention, it is necessary to understand 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, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, in the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0037] Terms such as "upper", "above", "lower", "below", etc. 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 may be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptors used herein interpreted accordingly.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "disposed", "socketed", "connected", "through", "plugged" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example 1

[0040] like Figure 3 Figure 4As shown, 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, which is compressed by a number of compression screws 5 around it. The thickness of the middle pressure zone of the deformation plate is greater than the thickness of the transition zone and is flush with the cylinder body joint area. There is hydraulic oil in the pressure cylinder. There is a hole on the pressure cylinder body to connect the oil pump. The oil pump can generate a pressure of 30Mpa. The pressure borne by the elastic deformation transition zone b causes the elastic deformation transition zone b to produce elastic deformation, so that the pressure zone a of the deformation plate translates △L. The pressure zone a of the deformation plate resists the pressure guide plate 13, and the pressure borne directly acts on the pressure guide plate. The length of the elastic deformation zone b is 10mm, the thickness is f=0.5mm, △L=0.05mm, and the depth of the oil chamber is g=0.1mm. The fluid pressure acting on the de section is 300N per mm in the width direction, and the shear stresses at the two points of de are 150N per mm respectively. The spring steel 65mm is used, and the shear stress of the spring steel with the lowest shear stress is 340N / mm 2 , 0.5mm 2 The shear strength is 170N, which is greater than 150N. When the structure uses spring steel with a shear stress of more than 1050Mpa, the maximum pressure can withstand a fluid pressure of 100Mpa. The size of the bonding pressure area is 1m*1m. When using 30Mpa pressure, it can generate 3,000 tons of pressure. When using 100Mpa fluid pressure, it can generate 10,000 tons of pressure. The pressure bonding movement of 0.05mm only requires 50 grams of hydraulic oil to be injected, and all can be completed with a low-power oil pump.

[0041] Example 2

[0042] like Figure 7 As shown, the difference from Example 1 is that it is composed of two deformation plates (welded) 6 with cylinder joint area and weld 3. When the intermediate fluid pressure increases, the pressure guide plates 13 on both sides are subjected to force, and the total moving distance is 2△L.

[0043] Example 3

[0044] like Figure 7 , Figure 8 , Fig. 9 and Fig.12As shown, it is a three-plate die casting or injection molding system, a plate 20, a plate 23, a mold beam 19 form a force frame, a two-plate movable fixed guide rail 17 is provided below, a two-plate movable guide rail 16 is provided above, a two-plate 18 is mounted on the two-plate movable guide rail 16, a fixed mold 21 is provided on the plate 20, a movable mold 22 is provided on the two-plate 18, a gate assembly seat 14 is mounted on the gate assembly seat guide rail 15, the moving direction of the gate assembly seat guide rail 15 is perpendicular to the moving direction of the two-plate movable guide rail and the direction of the clamping force, and is parallel to the mold plane of the plate 20 and the two-plate 18, so that the gate assembly seat 14 can be moved to the two-plate 18 and The mold locking operation is performed between the three plates 23, and the gate assembly seat 14 can also be moved outside the machine, so that the moving guide rail of the second plate can drive the second plate 18 and the movable mold 22 to move to the third plate to implement the mold opening and taking operation. 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 lifting cylinder 28. 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 inclined wedge lifting cylinder descends to squeeze the passive inclined wedge 11 and the convex spherical swing pressure plate 10, the concave spherical swing seat 9, so that Figure 7 The welded sealed double deformation plate micro-motion pressure cylinder, gate assembly seat 14, active inclined wedge 12, passive inclined wedge 11, convex spherical swing plate 10, concave spherical swing seat 9, second plate 18, movable mold 22, fixed mold 21 are pressed between third plate 23 and first plate 20, and then the plunger pump is started to pump pressure oil into the micro-motion pressure cylinder oil chamber. At this time, the third plate 23 and the gate assembly seat respectively act as clamping force transmission plates to finally transmit the clamping force to the movable mold 22 and the fixed mold 21. Fig.12 It is a top view of the pattern, in which the state including 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 are moved to the outside of the machine for mold opening operation.

[0045] Example 4

[0046] like Figure 3 and 10 As shown, the difference from Example 3 is that Figure 3 The screw clamping belt cylinder joint area deformation plate pressure cylinder replaces Figure 7 Welded sealed double deformation plate pressure cylinder.

[0047] Example 5

[0048] like Fig.12 As shown, the difference from the fourth embodiment is that the cylinder body 1 is directly used to replace the three plates 23 to make the overall structure simpler.

[0049] Example 6

[0050] like Figure 7 and Fig.14 As shown, Fig.14The schematic diagram of the clamping die of a two-plate injection die casting machine is shown in FIG. The first plate 25 and the second plate 26 are mounted on the column 24. The first plate 25 is mounted on the column 25. The fixed die 21 is mounted on the column 26. The movable die 22 is mounted on the second plate 26. The second plate 26 drives the movable die 22 and is close to the fixed die 21. The rear brake mechanism 27 and Figure 6 The hollow annular micro-motion pressure cylinder shown is tightly attached to the second plate 26 of the Corinthian column and 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 second plate 26 of the Corinthian column respectively act as locking pressure transmission plates to transmit the locking pressure to the movable mold 22 and the fixed mold 21.

[0051] Example 7

[0052] like Figure 6 As shown, it is composed of a deformed plate (welded) 6 with a cylinder body joint area and an annular cylinder body 7, which are clamped by a clamping screw 5.

[0053] Example 8

[0054] like Figure 7 As shown, it is composed of an annular deformation plate (welding) 8 with a cylinder body joint area, an annular cylinder body 7 and a weld 3.

[0055] Example 9

[0056] like Fig.14 As shown, the cylinder body 1 and the deformed plate (welding) 6 with the cylinder body joint area are connected by a weld 3, and the weld 3 connects the two into a sealed container. The pressure guide plate 13 is attached to the deformed plate (welding) 6 with the cylinder body joint area. Fig.15 It is a schematic diagram of the case where the elastic deformation transition zone b undergoes 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.

[0057] The cylinder bodies 1 in the embodiments 1, 7 and 9 are different in details, but since the differences are not significant, they are all numbered uniformly for simplicity.

[0058] The beneficial effects of the present invention are: the sealed pressure cylinder composed of the micro-motion pressure plate and the reference plate or two micro-motion pressure plates is used 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.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope 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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