A multi-plate superhigh pressure intensifier

Abstract

The utility model discloses a kind of multi-plate type superhigh pressure intensifier, including rack, injection cylinder being set on rack and be used for driving injection cylinder work's intensifier cylinder, wherein, the injection cylinder is located the lower end of the intensifier cylinder, and the upper and lower ends of the cylinder body of this injection cylinder are fixedly connected with the rack.The multi-plate type superhigh pressure intensifier of the utility model by setting injection cylinder below intensifier cylinder, so injection cylinder can be conveniently installed and maintained;Meanwhile by fixing the upper and lower ends of the cylinder body of injection cylinder, when the intensifier cylinder drives the piston rod of injection cylinder works, the coaxiality between the cylinder body of injection cylinder and piston rod can be guaranteed, to avoid appearing unilateral contact phenomenon, to improve the stability when injection cylinder works.

Description

Technical Field

[0001] This invention belongs to the technical field of internal high-pressure expansion machines, specifically relating to a multi-plate ultra-high-pressure booster. Background Technology

[0002] Internal high-pressure forming, also known as hydraulic forming or fluid forming, is a material forming process that uses liquid as the forming medium and controls internal pressure and material flow to form hollow parts. It is widely used in the automotive, aerospace, and aviation manufacturing industries, especially in automobile production. For example, internal high-pressure hydraulic forming is increasingly replacing traditional processing methods in the machining of parts such as car subframes, dashboard brackets, rear subframe reinforcing tubes, SUV longitudinal and transverse arms, subframe longitudinal and transverse arms, and hot-end exhaust manifolds.

[0003] Existing hydraulic expansion forming equipment for internal high-pressure forming, such as the invention patent with publication number CN 111390004 A, discloses "a hydraulic booster device." This device includes an injection cylinder and a booster cylinder arranged opposite each other. The booster cylinder contains a piston rod capable of axial reciprocating motion, and the injection cylinder contains an injection rod capable of axial reciprocating motion, with the injection rod connected to the piston rod. The injection cylinder and booster cylinder are arranged vertically, with the booster cylinder positioned above the injection cylinder. The injection cylinder has a main pipe connecting to its interior, and the injection rod has a flow channel. One end of this channel connects to the main pipe, and the other end extends to the outside of the injection cylinder and circumferentially through the injection rod, forming a medium outlet. In this hydraulic booster device, the injection cylinder is located at the lower end and uses a single-end fixed structure (its fixed end is the bottom end), thus the cylinder body is arranged in a cantilever state. When the injection rod of the injection cylinder is connected to the piston rod of the booster cylinder, the injection rod of the injection cylinder is prone to off-center load due to factors such as installation coaxiality deviation, dynamic load offset, or excessive piston rod length-to-diameter ratio. This causes its axis to form an angle with the cylinder axis. After this off-center load is transmitted to the cylinder through the piston, it will cause the cylinder to be subjected to asymmetrical bending moment. According to the analysis of material mechanics, if the deflection of the free end of the cylinder fixed at one end exceeds the cylinder inner diameter tolerance under off-center load, the piston and the inner wall of the cylinder will form "one-sided contact", which will lead to plastic bending deformation of the cylinder wall. In severe cases, it will cause piston jamming (cylinder jamming), and lead to seal tearing, hydraulic oil leakage, and even permanent damage to the cylinder and piston rod. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a multi-plate ultra-high pressure booster, which can fix the injection cylinder at both ends, improve the stability of the injection cylinder during operation, and avoid the above-mentioned technical problems caused by the injection cylinder not being securely fixed.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is:

[0006] A multi-plate ultra-high pressure booster includes a frame, an injection cylinder mounted on the frame, and a booster cylinder for driving the injection cylinder. The injection cylinder is located at the lower end of the booster cylinder, and both the upper and lower ends of the injection cylinder body are fixedly connected to the frame.

[0007] Preferably, the frame includes multiple connecting plates and multiple sets of connecting columns for connecting the multiple connecting plates; the multiple connecting plates include a first connecting plate, a second connecting plate, and a third connecting plate arranged sequentially from top to bottom; wherein, the first connecting plate is installed at the upper end of the connecting column; the third connecting plate is installed at the lower end of the connecting column; the second connecting plate is located between the first connecting plate and the third connecting plate, and is installed on the connecting column by a sliding locking structure; the upper and lower ends of the injection cylinder are fixedly connected to the second connecting plate and the third connecting plate, respectively.

[0008] Preferably, the second connecting plate is provided with a first clearance hole for avoiding the connecting post; the sliding locking structure includes a threaded section provided on the connecting post and locking nuts provided on the upper and lower sides of the second connecting plate, wherein the locking nuts are installed on the threaded section, and the outer diameter of the locking nuts is larger than the inner diameter of the first clearance hole; the locking nuts located on the upper and lower sides clamp the upper and lower sides of the second connecting plate to fix the position of the second connecting plate.

[0009] Preferably, the frame further includes a base; the third connecting plate is fixed on the base.

[0010] Preferably, the second connecting plate is provided with a second clearance hole for avoiding the piston rod of the injection cylinder.

[0011] Preferably, the booster cylinder is mounted on the first connecting plate, and the piston rod of the booster cylinder is connected to the piston rod of the injection cylinder.

[0012] Preferably, a movable crossbeam is provided between the piston rod of the booster cylinder and the piston rod of the injection cylinder, and the movable crossbeam is slidably connected to the connecting column, wherein the lower end of the piston rod of the booster cylinder is mounted on the upper surface of the movable crossbeam, and the upper end of the piston rod of the injection cylinder is mounted on the lower surface of the movable crossbeam.

[0013] Preferably, an adapter is provided between the piston rod of the injection cylinder and the movable crossbeam; the upper end of the adapter is mounted on the movable crossbeam through a detachable connection structure, and the lower end is also connected to the piston rod of the injection cylinder through a detachable connection structure.

[0014] Preferably, the detachable connection structure is a flange connection structure.

[0015] Preferably, there are four sets of connecting columns, arranged in a rectangular pattern; the outer diameter of the injection cylinder is smaller than the distance between two adjacent sets of connecting columns.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] 1. The multi-plate ultra-high pressure booster of this utility model facilitates the installation and maintenance of the injection cylinder by placing the injection cylinder below the booster cylinder.

[0018] 2. The multi-plate ultra-high pressure booster of this utility model fixes the upper and lower ends of the injection cylinder body, avoiding the bending moment that may occur when the injection cylinder is fixed on one side. This reduces the degree of bending deformation that may occur during operation, thereby reducing the amount of deformation of the injection cylinder. As a result, when the booster cylinder drives the piston rod of the injection cylinder to work, the coaxiality between the injection cylinder body and the piston rod can be guaranteed, thus avoiding one-sided contact and improving the stability of the injection cylinder during operation. Attached Figure Description

[0019] Figures 1-3 These are structural diagrams of the multi-plate ultra-high pressure booster of this utility model from three different perspectives.

[0020] Figure 4 This is a schematic diagram of a sliding locking structure.

[0021] Figure 5 This is a cross-sectional view of the multi-plate ultra-high pressure booster of this utility model. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0023] See Figures 1-5 The multi-plate ultra-high pressure booster of this utility model includes a frame, an injection cylinder 2 mounted on the frame, and a booster cylinder 1 for driving the injection cylinder 2. The injection cylinder 2 is located at the lower end of the booster cylinder 1, and the upper and lower ends of the cylinder body of the injection cylinder 2 are fixedly connected to the frame.

[0024] See Figures 1-5The frame includes a base 6, a connecting plate mounted on the base 6, and four sets of connecting posts 7 for connecting the base 6 and the connecting plate. The connecting plates are in three sets, from top to bottom: a first connecting plate 3, a second connecting plate 4, and a third connecting plate 5. The first connecting plate 3 is mounted on the upper end of the connecting post 7; the third connecting plate 5 is mounted on the base 6; the second connecting plate 4 is located between the first connecting plate 3 and the third connecting plate 5 and is mounted on the connecting post 7 via a sliding locking structure. A booster cylinder 1 is mounted on the first connecting plate 3, and its piston rod is connected to the piston rod of the injection cylinder 2. The upper end of the injection cylinder 2 is mounted on the lower surface of the second connecting plate 4, and the lower end is mounted on the upper surface of the third connecting plate 5. The second connecting plate 4 has a second clearance hole for avoiding the piston rod of the injection cylinder 2. An oil seal structure can be provided between the second clearance hole and the piston rod of the injection cylinder 2 to guide and lubricate the movement of the piston rod of the injection cylinder 2.

[0025] In this embodiment, the upper and lower ends of the injection cylinder 2 are mounted on the second connecting plate 4 and the third connecting plate 5 through a flange connection structure. The injection cylinder 2 can be installed and fixed through the flange connection structure. In addition, the outer diameter of the injection cylinder 2 is smaller than the distance between two adjacent sets of connecting columns 7, so as to facilitate the installation, disassembly and removal of the injection cylinder 2.

[0026] See Figures 1-5 The second connecting plate 4 is provided with a first clearance hole for avoiding the connecting post 7; the sliding locking structure includes a threaded section provided on the connecting post 7 and locking nuts 9 provided on the upper and lower sides of the second connecting plate 4, wherein the locking nuts 9 are installed on the threaded section, and the outer diameter of the locking nuts 9 is larger than the inner diameter of the first clearance hole; the locking nuts 9 located on the upper and lower sides clamp the upper and lower sides of the second connecting plate 4 to fix the position of the second connecting plate 4; when it is necessary to adjust the height of the second connecting plate 4, it is only necessary to rotate the locking nuts 9 located above the second connecting plate 4 and then move the second connecting plate 4 upward. When the second connecting plate 4 reaches the predetermined position, rotate the locking nuts 9 located below the second connecting plate 4 so that the locking nuts 9 located on the upper and lower sides clamp the second connecting plate 4 again.

[0027] See Figures 1-5A movable crossbeam 8 is provided between the piston rod of the booster cylinder 1 and the piston rod of the injection cylinder 2. The movable crossbeam 8 is slidably connected to the connecting column 7. The lower end of the piston rod of the booster cylinder 1 is mounted on the upper surface of the movable crossbeam 8, and the upper end of the piston rod of the injection cylinder 2 is mounted on the lower surface of the movable crossbeam 8. The movable crossbeam 8 is used to guide and limit the movement of the piston rods of the booster cylinder 1 and the injection cylinder 2, thereby improving stability.

[0028] See Figures 1-5 An adapter 10 is provided between the piston rod of the injection cylinder 2 and the movable crossbeam 8; the upper end of the adapter 10 is mounted on the movable crossbeam 8 through a detachable connection structure, and the lower end is also connected to the piston rod of the injection cylinder 2 through a detachable connection structure; in this embodiment, the detachable connection structure is a flange connection structure.

[0029] When maintenance is required on injection cylinder 2, the following operations can be performed:

[0030] First, loosen the connection between the piston rod of the injection cylinder 2 and the adapter 10, and then loosen the connection between the adapter 10 and the movable crossbeam 8; then remove the adapter 10; at this point, the piston rod of the injection cylinder 2 can be pulled out of its cylinder body; then loosen the connection between the cylinder body of the injection cylinder 2 and the second connecting plate 4, and then rotate the locking nut 9 located on the upper side of the second connecting plate 4 so that the locking nut 9 moves upward, and then move the second connecting plate 4 upward, while simultaneously rotating the locking nut 9 located on the lower side of the second connecting plate 4, thereby clamping and fixing the position of the second connecting plate 4. After fixing the position of the second connecting plate 4, there is now a sufficient gap between the upper end of the cylinder body of the injection cylinder 2 and the second connecting plate 4, so that the operator can replace the seal 11 on the cylinder body of the injection cylinder 2; in addition to replacing the seal 11, the connection between the cylinder body of the injection cylinder 2 and the third connecting plate 5 can also be loosened, and the injection cylinder 2 can be moved horizontally to complete the maintenance and replacement of the cylinder body of the injection cylinder 2.

[0031] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A multi-plate ultra-high pressure booster, comprising a frame, an injection cylinder mounted on the frame, and a booster cylinder for driving the injection cylinder, characterized in that, The injection cylinder is located at the lower end of the booster cylinder, and both the upper and lower ends of the injection cylinder body are fixedly connected to the frame.

2. The multi-plate ultra-high pressure booster according to claim 1, characterized in that, The frame includes multiple connecting plates and multiple sets of connecting columns for connecting the multiple connecting plates; the multiple connecting plates include a first connecting plate, a second connecting plate and a third connecting plate arranged sequentially from top to bottom; wherein, the first connecting plate is installed at the upper end of the connecting column; the third connecting plate is installed at the lower end of the connecting column; the second connecting plate is located between the first connecting plate and the third connecting plate and is installed on the connecting column by a sliding locking structure; the upper and lower ends of the injection cylinder are fixedly connected to the second connecting plate and the third connecting plate, respectively.

3. The multi-plate ultra-high pressure booster according to claim 2, characterized in that, The second connecting plate is provided with a first clearance hole for avoiding the connecting post; the sliding locking structure includes a threaded section provided on the connecting post and locking nuts provided on the upper and lower sides of the second connecting plate, wherein the locking nuts are installed on the threaded section, and the outer diameter of the locking nuts is larger than the inner diameter of the first clearance hole; the locking nuts located on the upper and lower sides clamp the upper and lower sides of the second connecting plate to fix the position of the second connecting plate.

4. The multi-plate ultra-high pressure booster according to claim 2 or 3, characterized in that, The frame also includes a base; the third connecting plate is fixed to the base.

5. The multi-plate ultra-high pressure booster according to claim 2, characterized in that, The second connecting plate is provided with a second clearance hole for avoiding the piston rod of the injection cylinder.

6. The multi-plate ultra-high pressure booster according to claim 2, characterized in that, The booster cylinder is mounted on the first connecting plate, and the piston rod of the booster cylinder is connected to the piston rod of the injection cylinder.

7. The multi-plate ultra-high pressure booster according to claim 6, characterized in that, A movable crossbeam is provided between the piston rod of the booster cylinder and the piston rod of the injection cylinder. The movable crossbeam is slidably connected to the connecting column. The lower end of the piston rod of the booster cylinder is mounted on the upper surface of the movable crossbeam, and the upper end of the piston rod of the injection cylinder is mounted on the lower surface of the movable crossbeam.

8. The multi-plate ultra-high pressure booster according to claim 7, characterized in that, A connector is provided between the piston rod of the injection cylinder and the movable crossbeam; the upper end of the connector is mounted on the movable crossbeam via a detachable connection structure, and the lower end is also connected to the piston rod of the injection cylinder via a detachable connection structure.

9. The multi-plate ultra-high pressure booster according to claim 8, characterized in that, The detachable connection structure is a flange connection structure.

10. The multi-plate ultra-high pressure booster according to claim 2, characterized in that, The connecting columns are in four groups, arranged in a rectangular pattern; the outer diameter of the injection cylinder is smaller than the distance between two adjacent groups of connecting columns.

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