A new type of bushing vacuum liquid filling hydraulic press equipment

Abstract

The application discloses a novel bushing liquid-filling hydraulic pressing equipment, and relates to the technical field of hydraulic bushing production, which comprises a machine body, a liquid-filling device, an upper fixing plate and a lower fixing plate are arranged in the machine body, an upper tooling capable of sliding up and down is arranged on the upper fixing plate, the upper tooling is connected with the output end of an oil cylinder, and the oil cylinder is arranged at the top end of the machine body; a lower tooling is arranged on the lower fixing plate, the lower tooling comprises a lower tooling sealing barrel and a bushing fixing clamp, the upper tooling comprises an upper tooling sealing barrel and a flange pressing head, the lower tooling sealing barrel is clamped and sealed with the upper tooling sealing barrel, and the liquid-filling device comprises a liquid-filling nozzle, a dripping liquid collecting box and a check valve. The application can create a vacuum sealing environment for the liquid-filling pressing work of the bushing, guarantees the stability and yield of the hydraulic bushing product, and improves the production efficiency. In addition, the application also has the advantage that the dripping damping liquid of the liquid-filling nozzle after the liquid-filling work is completed cannot fall on the working equipment.

Description

Technical Field

[0001] This invention relates to the field of hydraulic bushing production technology, and in particular to a novel hydraulic bushing vacuum filling equipment. Background Technology

[0002] Hydraulic bushings are widely used components in vehicles (such as automobiles and rail vehicles), primarily installed on the vehicle's suspension or bogies to buffer vibrations and shocks, thereby improving vehicle stability and safety. The internal structure of a hydraulic bushing mainly consists of a rubber component, a reservoir, and flow channels. The reservoir and flow channels are filled with damping fluid. When the bushing is impacted by a vibration source, the damping fluid flows through the channels, rapidly absorbing the impact energy and eliminating vibration, thus improving vehicle stability.

[0003] like Figure 1 The hydraulic bushings shown are typically assembled using a dry filling technique, requiring filling holes to be designed into the product. The hydraulic bushings are first assembled in batches as unfilled semi-finished products, and then centrally filled and sealed with liquid, using rivets to plug the filling holes. However, this filling and sealing method suffers from problems such as poor stability, low yield, high risk of leakage during product use, and low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a novel hydraulic filling equipment for bushing vacuum filling, which solves the problems mentioned in the background art of the existing hydraulic bushing filling and sealing methods, such as poor stability, low yield, high risk of leakage after product use, and low production efficiency.

[0005] The present invention adopts the following technical solution:

[0006] The present invention discloses a novel bushing vacuum filling hydraulic filling device, comprising a machine body, wherein an upper fixed plate and a lower fixed plate are fixedly disposed inside the machine body, and an upper tooling that can slide up and down is disposed on the upper fixed plate. The upper tooling is connected to the output end of a hydraulic cylinder, and the hydraulic cylinder is disposed at the top of the machine body.

[0007] A lower tooling is provided on the lower fixed plate, located directly below the upper tooling. The lower tooling includes a lower tooling sealing barrel and a bushing fixing clamp. A vacuum channel is provided on the lower tooling sealing barrel. The bushing fixing clamp is poweredly connected to a bushing fixing cylinder and clamps tightly against the outer wall of the bushing housing. A bushing tensioning clamp is provided below the bushing fixing clamp and is slidably disposed within the lower fixed plate. The bushing tensioning clamp clamps tightly against the lower sealing end and is mounted on a pushing device, which is located on the lower end face of the lower fixed plate.

[0008] The upper tooling includes an upper tooling sealing barrel and a curling head, the lower tooling sealing barrel is clamped and sealed with the upper tooling sealing barrel, and the curling head is abutted against the bushing cover.

[0009] The machine body is equipped with a liquid filling device, which includes a liquid filling nozzle that can extend above the bushing fixing clamp.

[0010] Furthermore, the filling nozzle is connected to the liquid pipeline, a check valve is provided between the filling nozzle and the liquid pipeline, and a drip liquid collection box is provided below the filling nozzle, the drip liquid collection box is fixedly connected to the collection box fixing rod;

[0011] The liquid pipeline and the collection box fixing rod are slidably arranged inside the pipeline frame;

[0012] A liquid filling nozzle moving cylinder is fixedly connected to the pipe frame. The telescopic end of the liquid filling nozzle moving cylinder is fixedly connected to a connecting block. The connecting block is fixedly connected to the liquid pipe and is located between the liquid filling nozzle and the pipe frame.

[0013] A connecting frame is fixedly connected to the end of the collection box fixing rod. The connecting frame is slidably connected to the liquid pipeline. A first spring is sleeved on the side of the liquid pipeline away from the connecting frame. One end of the first spring abuts against the connecting frame. A limit ring is fixedly connected to the liquid pipeline. The other end of the first spring abuts against the limit ring.

[0014] A spring limiting bracket is provided on the side of the connecting frame facing the first spring, and the spring limiting bracket cooperates with the limiting ring for limiting.

[0015] Furthermore, the pipe rack is slidably mounted on the base, the base is provided with a column, a height adjustment seat is slidably connected to the column, and the pipe rack is fixedly connected to the height adjustment seat.

[0016] Furthermore, the upper tooling includes an upper tooling fixing plate, and a guide column is fixedly connected to the upper end face of the upper tooling fixing plate, and the guide column is slidably connected to the upper fixing plate;

[0017] A force sensor is fixedly connected to the upper end face of the upper tooling fixing plate. A circular hole is provided in the upper fixing plate. The output end of the oil cylinder passes through the circular hole and is fixedly connected to the force sensor.

[0018] A magnetic linear guide is fixedly connected to the upper end face of the upper tooling fixing plate. The upper fixing plate is provided with a reserved hole for the magnetic linear guide to pass through and a displacement detection magnetic switch. After the magnetic linear guide passes through the upper fixing plate, it cooperates with the displacement detection magnetic switch.

[0019] Furthermore, a tooling piston rod is fixedly connected to the lower end face of the upper tooling fixing plate, the lower end face of the tooling piston rod is fixedly connected to the edge-rolling pressure head, and an upper tooling sealing end cover is slidably connected to the outer wall of the tooling piston rod, and the lower end face of the upper tooling sealing end cover is fixedly connected to the upper tooling sealing barrel.

[0020] A plurality of guide spring rods are fixedly connected to the lower end face of the upper tooling fixing plate. The guide spring rods are slidably connected and limited to the upper tooling sealing end cover. A second spring is sleeved on the outer side of the guide spring rod. One end of the second spring abuts against the upper tooling fixing plate, and the other end of the second spring abuts against the upper tooling sealing end cover.

[0021] Furthermore, the tooling piston rod is provided with a cavity, and a third spring, a pre-compression head fixing block, and a pre-compression head are provided in the cavity. One end of the third spring abuts against the inner wall of the tooling piston rod, and the other end of the third spring abuts against the upper end face of the pre-compression head fixing block. The lower end face of the pre-compression head fixing block is fixedly connected to the pre-compression head. The crimping head is provided with a pre-compression cavity, and the outer wall of the pre-compression head is slidably connected to the inner wall of the pre-compression cavity.

[0022] The shape of the pre-compression chamber matches the shape of the bushing cover, and the pre-compression head is provided with a cavity that matches the shape of the bushing cover.

[0023] A limiting block is fixedly connected to the lower port of the cavity, and the limiting block is in a limiting fit with the pre-pressurization head fixing block.

[0024] Furthermore, the lower tooling sealing barrel is sealed and fixedly connected to the lower fixed plate, and a sealing guide sleeve is sealed and connected to the side wall of the lower tooling sealing barrel. The sealing guide sleeve is slidably connected to the sealing rod. One end of the sealing rod is fixedly connected to the bushing fixing clamp, and the other end of the sealing rod is connected to the output end of the bushing fixing cylinder through the first cylinder floating joint. The bushing fixing cylinder is fixedly connected to the lower fixed plate.

[0025] The bottom of the bushing fixing fixture is provided with a fixture slider, which is slidably connected to the guide plate, and the guide plate is fixedly connected to the lower fixing plate.

[0026] Furthermore, a sliding cavity is provided inside the lower fixing plate, and the bushing tensioning clamp is slidably connected to the sliding cavity in a sealed manner;

[0027] The lower outer wall of the bushing tensioning clamp is slidably connected to a lower tooling sealing end cover, which is fixedly connected to the lower end face of the lower fixing plate.

[0028] Furthermore, the bushing tensioning clamp includes a sealing piston cylinder, a clamping sleeve cover is fixedly connected to the upper part of the sealing piston cylinder, the clamping sleeve cover is slidably disposed in the sliding cavity, a plurality of sliding pressure heads arranged in a ring are radially slidably connected in the clamping sleeve cover, and a pull rod is fixedly disposed on the lower sealing end, the sliding pressure head and the pull rod are clamped together.

[0029] The outer wall of the sealing piston cylinder is slidably connected to the sealing end cap of the lower tooling. A clamping concave cylinder is slidably connected inside the sealing piston cylinder. An extrusion slope is provided on the inner wall of the upper port of the clamping concave cylinder. A mating slope is provided at the lower end of the sliding pressure head. The mating slope and the extrusion slope are slidably engaged.

[0030] The bottom of the clamping concave cylinder is fixedly connected to a lifting piston rod, which is slidably and sealed inside the sealing piston cylinder. The lower end of the lifting piston rod is fixedly connected to the output end of the clamping cylinder through a second cylinder floating joint.

[0031] The pushing device includes a pushing plate, the upper end face of which is fixedly connected to the output end of the pushing cylinder, the pushing cylinder is fixedly connected to the lower end face of the lower fixed plate, and the upper end face of the pushing plate is fixedly connected to the sealing piston cylinder through a vertical rod.

[0032] The lower end face of the push plate is fixedly connected to the clamping cylinder, and the push plate is provided with a reserved hole for the output end of the clamping cylinder to pass through. The push plate is movably arranged in the limiting frame, and the limiting frame is fixedly connected to the lower end face of the lower tooling sealing end cover.

[0033] Furthermore, a clamping cavity is provided at the center of the clamping sleeve cover, the clamping end of the sliding pressure head is movably disposed in the clamping cavity, a clamping spring is provided on the side arm of the sliding pressure head, one end of the clamping spring abuts against the side arm of the sliding pressure head, and the other end of the clamping spring abuts against the clamping sleeve cover;

[0034] The clamping sleeve cover is provided with a sliding groove that mates with the sliding pressure head side arm;

[0035] The clamping end of the sliding pressure head is provided with anti-slip texture.

[0036] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0037] The novel bushing vacuum filling hydraulic filling equipment provided by this invention can form a vacuum-sealed environment after the upper and lower tooling are closed. Press-fitting and edge-rolling are performed in this vacuum environment, ensuring the upper cover of the bushing is tightly pressed into the bushing housing. This guarantees the stability and yield rate of the finished hydraulic bushing. It eliminates the need to design filling holes on the product and then use rivets to plug them, reducing the risk of leakage and improving production efficiency. Furthermore, this invention also includes a drip liquid collection box to prevent damping fluid from dripping from the filling nozzle onto the working equipment after filling is complete. Attached Figure Description

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the hydraulic bushing structure mentioned in the background section;

[0040] Figure 2 This is a cross-sectional view of the hydraulic bushing mentioned in the background section;

[0041] Figure 3 This is a front view of the novel bushing vacuum filling hydraulic equipment of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the novel bushing vacuum filling hydraulic equipment of the present invention;

[0043] Figure 5 This is a schematic diagram of the filling device structure in the novel bushing vacuum filling hydraulic filling equipment of the present invention;

[0044] Figure 6 This is a front view of the filling device in the novel bushing vacuum filling hydraulic filling equipment of the present invention;

[0045] Figure 7 This is a schematic diagram of the upper tooling structure in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 1 ;

[0046] Figure 8 This is a schematic diagram of the upper tooling structure in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 2 ;

[0047] Figure 9 This is a sectional view of the upper tooling in the novel bushing vacuum filling hydraulic equipment of the present invention;

[0048] Figure 10 This is a schematic diagram of the lower tooling structure after removing the lower fixing plate in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 1 ;

[0049] Figure 11 This is a schematic diagram of the lower tooling structure after removing the lower fixing plate in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 2 ;

[0050] Figure 12 This is a sectional view of the lower tooling in the novel bushing vacuum filling hydraulic equipment of the present invention;

[0051] Figure 13 This is a schematic diagram of the bushing fixing clamp structure in the novel bushing vacuum filling hydraulic equipment of the present invention;

[0052] Figure 14 This is a schematic diagram of the bushing tensioning clamp structure in the novel bushing vacuum filling hydraulic equipment of the present invention;

[0053] Figure 15 This is a cross-sectional view of the bushing tensioning clamp in the novel bushing vacuum filling hydraulic equipment of the present invention;

[0054] Figure 16 This is a schematic diagram of the clamping sleeve cover structure in the novel bushing vacuum filling hydraulic equipment of the present invention;

[0055] Figure 17 This is a schematic diagram of the sliding pressure head structure in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 1 ;

[0056] Figure 18 This is a schematic diagram of the sliding pressure head structure in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 2 ;

[0057] Figure 19 This is a schematic diagram of the sliding pressure head structure in the novel bushing vacuum filling hydraulic equipment of the present invention. Figure 3 ;

[0058] Figure 20 This is a schematic diagram of the clamping concave cylinder structure in the novel bushing vacuum filling hydraulic equipment of the present invention.

[0059] Explanation of reference numerals in the attached drawings: 1. Upper fixture; 1-1. Upper fixture fixing plate; 1-2. Fixture piston rod; 1-3. Guide piston rod; 1-4. Upper fixture sealing end cap; 1-5. Upper fixture sealing barrel; 1-6. Vacuum pressure gauge; 1-7. Third spring; 1-8. Pre-compression head fixing block; 1-9. Pre-compression head; 1-10. Limiting block; 1-11. Edge-rolling head; 1-12. Pre-compression chamber; 1-13. Second spring; 1-14. Cavity; 2. Liquid filling device; 2-1. Drip liquid collection box; 2-2. Liquid filling nozzle; 2-3. Check valve; 2-4. Liquid pipe 2-4-1, Limiting Ring; 2-5, Connecting Block; 2-6, Height Adjustment Seat; 2-7, Column; 2-8, Filling Nozzle Moving Cylinder; 2-9, Base; 2-10, First Spring; 2-11, Adapter; 2-12, Spring Limiting Frame; 2-13, Liquid Pipe Hole; 2-14, Pipe Support; 3, Lower Tooling; 3-1, Lower Tooling Sealing Buckle; 3-2, First Cylinder Floating Joint; 3-3, Bushing Fixing Cylinder; 3-3-1, U-Shaped Frame; 3-4, Bushing Fixing Clamp; 3-5, Vacuum Channel; 3-6, Bushing Tensioning Clamp; 3-6-1. 3-6-2 Sealed piston cylinder; 3-6-3 Clamping sleeve cover; 3-6-4 Sliding pressure head; 3-6-5 Clamping concave cylinder; 3-6-5 Extrusion inclined surface; 3-6-6 Butt joint inclined surface; 3-6-7 Lifting piston rod; 3-6-8 Second cylinder floating joint; 3-6-9 Clamping cylinder; 3-6-10 Clamping cavity; 3-6-11 Clamping spring; 3-6-12 Slide groove; 3-6-13 Anti-slip texture; 3-7 Pushing device; 3-7-1 Pushing plate; 3-7-2 Vertical rod; 3-7-3 Pushing cylinder; 3-8 Lower tooling sealing end cover; 3-9. Limiting frame; 3-10. Guide plate; 3-11. Clamp slider; 3-12. Sealing guide sleeve; 3-13. Sealing rod; 4. Magnetic linear guide rail; 4-1. Displacement detection magnetic switch; 5. Hydraulic bushing; 5-1. Bushing housing; 5-2. Lower sealing end; 5-2-1. Vulcanized rubber; 5-2-2. Pull rod; 5-3. Bushing cover; 6. Force sensor; 7. Guide column; 8. Upper fixing plate; 8-1. Round hole; 9. Lower fixing plate; 9-1. Fixed connecting rod; 9-2. Sliding cavity; 10. Hydraulic cylinder; 11. Control panel; 12. Machine body. Detailed Implementation

[0060] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0061] like Figures 1 to 2As shown, the hydraulic bushing 5 in this embodiment is a prior art. Specifically, the hydraulic bushing 5 includes a bushing housing 5-1, a lower sealing end 5-2, and a bushing upper cover 5-3. The upper part of the lower sealing end 5-2 is provided with an elastic vulcanized rubber 5-2-1. A pull rod 5-2-2 is fixedly connected to the bottom center of the lower sealing end 5-2. When filling with liquid, the bushing housing 5-1 is clamped, and the pull rod 5-2-2 is pulled down to increase the internal volume of the bushing. Then, liquid is filled into the bushing housing 5-1, the bushing upper cover 5-3 is closed, and the edge is pressed and rolled. Finally, the pull rod 5-2-2 is released to reset it.

[0062] like Figure 3 and Figure 4 As shown, this embodiment discloses a novel bushing vacuum filling hydraulic filling device, including a machine body 12. A control panel 11 is provided on the machine body 12. An upper fixed plate 8 and a lower fixed plate 9 are fixedly installed inside the machine body 12, which are opposite each other. The lower fixed plate 9 is fixedly connected to the upper fixed plate 8 through a fixed connecting rod 9-1. An upper tooling 1 that can slide up and down is provided on the upper fixed plate 8. The upper tooling 1 is connected to the output end of a hydraulic cylinder 10 and is powered by the hydraulic cylinder 10 to push downward. The hydraulic cylinder 10 is located at the top of the machine body 12. A lower tooling 3 is provided on the lower fixed plate 9. The lower tooling 3 is located directly below the upper tooling 1. During operation, the upper tooling 1 presses down and seals with the lower tooling 3 to close the mold.

[0063] In this embodiment, the upper tooling 1 includes an upper tooling fixing plate 1-1. A guide column 7 is fixedly connected to the upper end face of the upper tooling fixing plate 1-1, and the guide column 7 is slidably connected to the upper fixing plate 8. A force sensor 6 is fixedly connected to the upper end face of the upper tooling fixing plate 1-1. A circular hole 8-1 is provided in the upper fixing plate 8. The output end of the hydraulic cylinder 10 passes through the circular hole 8-1 and is fixedly connected to the force sensor 6. The force sensor 6 is used to detect the downward thrust data generated by the hydraulic cylinder 10. When the hydraulic cylinder 10 is working, it pushes the force sensor 6 downward, causing the upper tooling 1 to move downward under the guiding action of the guide column 7, thereby causing the upper tooling 1 and the lower tooling 3 to close.

[0064] In this embodiment, a magnetic linear guide 4 is fixedly connected to the upper surface of the upper fixture fixing plate 1-1. The upper fixing plate 8 is provided with a reserved hole for the magnetic linear guide 4 to pass through and a displacement detection magnetic switch 4-1. After the magnetic linear guide 4 passes through the upper fixing plate 8, it cooperates with the displacement detection magnetic switch 4-1. When the hydraulic cylinder 10 pushes the upper fixture fixing plate 1-1 to move, it will drive the magnetic linear guide 4 to move downward. At this time, the displacement detection magnetic switch 4-1 can sense the displacement data.

[0065] like Figures 5 to 6As shown, a liquid filling device 2 is installed inside the body 12. The liquid filling device 2 includes a liquid filling nozzle 2-2 that can extend above the bushing fixing clamp 3-4. The liquid filling nozzle 2-2 is connected to the liquid pipeline 2-4. The end of the liquid pipeline 2-4 is connected to an external liquid filling device through an adapter 2-11. A check valve 2-3 is installed between the liquid filling nozzle 2-2 and the liquid pipeline 2-4 to prevent liquid backflow. A drip liquid collection box 2-1 is installed below the liquid filling nozzle 2-2 and is fixedly connected to the collection box fixing rod 2-15.

[0066] In this embodiment, the liquid pipe 2-4 and the collection box fixing rod 2-15 are slidably disposed within the pipe frame 2-14, which is slidably disposed on the base 2-9. A dispensing nozzle moving cylinder 2-8 is fixedly connected to the pipe frame 2-14. The telescopic end of the dispensing nozzle moving cylinder 2-8 is fixedly connected to the connecting block 2-5, which is fixedly connected to the liquid pipe 2-4 and located between the dispensing nozzle 2-2 and the pipe frame 2-14.

[0067] A connecting bracket 2-13 is fixedly connected to the end of the collection box fixing rod 2-15. The connecting bracket 2-13 is slidably connected to the liquid pipe 2-4. A first spring 2-10 is sleeved on the side of the liquid pipe 2-4 away from the connecting bracket 2-13. One end of the first spring 2-10 abuts against the connecting bracket 2-13. A limit ring 2-4-1 is fixedly connected to the liquid pipe 2-4, and the other end of the first spring 2-10 abuts against the limit ring 2-4-1. A spring limit bracket 2-12 is fixedly connected to the side of the connecting bracket 2-13 facing the first spring 2-10. The spring limit bracket 2-12 and the limit ring 2-4-1 engage in a limiting cooperation. During the filling process, the filling nozzle moving cylinder 2-8 is activated, pushing the connecting block 2-5 and the filling nozzle 2-2 forward. Since the first spring 2-10 is in a compressed state in the initial state, as the liquid pipeline 2-4 moves forward, the connecting frame 2-13 and the collection box fixing rod 2-15 are pushed forward together by the limiting ring 2-4-1 and the first spring 2-10. This causes the dripping liquid collection box 2-1 to move forward together with the filling nozzle 2-2. When it reaches the vicinity of the upper part of the bushing housing 5-1, the connecting frame 2-13 abuts against the pipeline frame 2-14. At this time, the dripping liquid collection box 2-1 stops moving, and the filling nozzle moving cylinder 2-8 continues to work. At this time, the first spring 2-10 is further compressed, the limiting ring 2-4-1 moves toward the connecting frame 2-13, and the filling nozzle 2-2 continues to move forward to reach the upper part of the bushing housing 5-1 for filling. After the filling process is complete, the filling nozzle moving cylinder 2-8 retracts, the first spring 2-10 resets, and the limiting ring 2-4-1 abuts against the spring limiting bracket 2-12 again. The filling nozzle 2-2 returns to above the drip liquid collection box 2-1, preventing drip liquid from falling onto the equipment. Then, the filling nozzle moving cylinder 2-8 continues to reset, and the filling nozzle 2-2 and the drip liquid collection box 2-1 reset together to their initial state. The liquid in the drip liquid collection box 2-1 can be processed uniformly.

[0068] In this embodiment, a column 2-7 is provided on the base 2-9, and a height adjustment seat 2-6 is slidably connected to the column 2-7. The height adjustment seat 2-6 is fastened to the column 2-7 by bolts, and the pipe bracket 2-14 is fixedly connected to the height adjustment seat 2-6. When it is necessary to adjust the height of the filling nozzle 2-2, the bolts can be loosened to slide the pipe bracket 2-14 and the height adjustment seat 2-6 on the column 2-7 to a suitable height.

[0069] like Figures 7 to 9 As shown, the upper tooling 1 includes an upper tooling sealing barrel 1-5 and a crimping pressure head 1-11. When the upper tooling 1 and the lower tooling 3 are closed, the lower tooling sealing barrel 3-1 and the upper tooling sealing barrel 1-5 are clamped and sealed together, and the crimping pressure head 1-11 is abutted against the bushing cover 5-3. In this embodiment, the upper tooling sealing barrel 1-5 is also equipped with a vacuum pressure gauge 1-6 to display the vacuum status inside the upper tooling sealing barrel 1-5.

[0070] The lower end face of the upper tooling fixing plate 1-1 is provided with a tooling piston rod 1-2 fixedly connected by a bolt assembly. The lower end face of the tooling piston rod 1-2 is fixedly connected to the edge-rolling pressure head 1-11. The outer wall of the tooling piston rod 1-2 is slidably connected to the upper tooling sealing end cover 1-4. The lower end face of the upper tooling sealing end cover 1-4 is fixedly connected to the upper tooling sealing barrel 1-5 by a bolt assembly.

[0071] A plurality of guide spring rods 1-3 are fixedly connected to the lower end face of the upper tooling fixing plate 1-1. The guide spring rods 1-3 are slidably connected to the upper tooling sealing end cover 1-4, and the ends of the guide spring rods 1-3 are provided with limiting protrusions to prevent the upper tooling sealing end cover 1-4 from falling out. A second spring 1-13 is sleeved on the outside of the guide spring rods 1-3. One end of the second spring 1-13 abuts against the upper tooling fixing plate 1-1, and the other end of the second spring 1-13 abuts against the upper tooling sealing end cover 1-4. During the downward pressing of the upper tooling 1, after the upper tooling sealing barrel 1-5 contacts the lower tooling sealing barrel 3-1, the upper tooling fixing plate 1-1 continues to press down, causing the tooling piston rod 1-2 to continue to press down, while ensuring that the upper tooling sealing barrel 1-5 is in a sealed state. At this time, the upper tooling sealing end cover 1-4 slides on the guide spring rod 1-3, and the second spring 1-13 is compressed until the edge pressing head 1-11 presses the bushing cover 5-3. After the work is completed, the oil cylinder 10 resets, the tooling piston rod 1-2 resets, the second spring 1-13 resets, and the end limit protrusion of the guide spring rod 1-3 pulls the upper tooling sealing end cover 1-4 to reset, and finally drives the upper tooling sealing barrel 1-5 to reset.

[0072] The tooling piston rod 1-2 has a recessed cavity 1-14, within which a third spring 1-7, a pre-compression head fixing block 1-8, and a pre-compression head 1-9 are housed. One end of the third spring 1-7 abuts against the inner wall of the tooling piston rod 1-2, and the other end abuts against the upper surface of the pre-compression head fixing block 1-8. The lower surface of the pre-compression head fixing block 1-8 is fixedly connected to the pre-compression head 1-9. The edge-rolling pressure head 1-11 has a pre-compression cavity 1-12, and the outer wall of the pre-compression head 1-9 is slidably connected to the inner wall of the pre-compression cavity 1-12. The shape of the pre-compression cavity 1-12 matches the shape of the bushing cover 5-3, and the pre-compression head 1-9 has a cavity that matches the shape of the bushing cover 5-3.

[0073] During operation, firstly, the lower tooling sealing barrel 3-1 contacts the upper tooling sealing barrel 1-5 to form a sealed environment; then, the piston end of the hydraulic cylinder 10 continues to work and extends downward, driving the tooling piston rod 1-2, the pre-compression head fixing block 1-8, and the pre-compression head 1-9 to continue to move downward. After the pre-compression head 1-9 contacts the bushing cover 5-3, it compresses the third spring 1-7 to perform pre-compression (during this process, the second spring 1-13 is continuously compressed); the hydraulic cylinder 10 continues to work, and the edge-rolling head 1-11 presses against the bushing cover 5-3 until the edge-rolling head 1-11 contacts the bushing fixing clamp 3-4 to complete the edge-rolling sealing work.

[0074] In this embodiment, a limiting block 1-10 is fixedly connected to the lower port of the cavity 1-14 to prevent the pressure head fixing block 1-8 from falling out. The limiting block 1-10 is in a limiting fit with the pre-pressing pressure head fixing block 1-8.

[0075] like Figure 10 and Figure 11 As shown, the lower tooling 3 includes a lower tooling sealing barrel 3-1 and a bushing fixing clamp 3-4. A vacuum channel 3-5 is provided on the lower tooling sealing barrel 3-1. During operation, the vacuum channel 3-5 is sealed to the air pipe and connected to an external vacuum device. This allows the lower tooling sealing barrel 3-1 and the upper tooling sealing barrel 1-5 to be evacuated to a vacuum state using the vacuum channel 3-5. After liquid filling, the hydraulic bushing 5 undergoes edge-sealing in a vacuum environment, allowing the liquid to fill the entire inner cavity of the hydraulic bushing 5 and remove air bubbles. In this embodiment, a sealing rubber gasket is provided on the contact surface between the lower tooling sealing barrel 3-1 and the upper tooling sealing barrel 1-5 for sealing when they are closed in mold.

[0076] The bushing fixing clamp 3-4 is poweredly connected to the bushing fixing cylinder 3-3 via the sealing rod 3-13. In this embodiment, two bushing fixing clamps 3-4 are provided. The operation of the bushing fixing cylinder 3-3 can push the two bushing fixing clamps 3-4 to clamp together, thereby clamping the bushing fixing clamps 3-4 tightly against the outer wall of the bushing housing 5-1. A bushing tensioning clamp 3-6 is provided below the bushing fixing clamp 3-4. The bushing tensioning clamp 3-6 is slidably and sealed within the lower fixing plate 9. The bushing tensioning clamp 3-6 is clamped against the pull rod 5-2-2. The bushing tensioning clamp 3-6 is mounted on the pushing device 3-7, which is located on the lower end face of the lower fixing plate 9.

[0077] like Figure 12 and Figure 13As shown, the lower tooling sealing barrel 3-1 is sealed and fixedly connected to the lower fixed plate 9. A sealing guide sleeve 3-12 is sealed and connected to the side wall of the lower tooling sealing barrel 3-1. The sealing guide sleeve 3-12 is slidably connected to the sealing rod 3-13. One end of the sealing rod 3-13 is fixedly connected to the bushing fixing clamp 3-4, and the other end of the sealing rod 3-13 is connected to the output end of the bushing fixing cylinder 3-3 through the first cylinder floating joint 3-2. The bushing fixing cylinder 3-3 is fixedly connected to the lower fixed plate 9 through the U-shaped frame 3-3-1. When the bushing fixing cylinder 3-3 is working, the sealing rod 3-13 slides sealed and within the sealing guide sleeve 3-12, thereby pushing the bushing fixing clamp 3-4 to clamp the outer wall of the bushing shell 5-1 while ensuring the internal sealing of the lower tooling sealing barrel 3-1.

[0078] The bottom of the bushing fixing clamp 3-4 is provided with a clamping slider 3-11 that is fixedly connected. The clamping slider 3-11 is slidably connected to the guide plate 3-10. The guide plate 3-10 is fixedly connected to the lower fixing plate 9. When the bushing fixing cylinder 3-3 is working, the bushing fixing clamp 3-4 slides on the guide plate 3-10, so that the two bushing fixing clamps 3-4 can complete the clamping action.

[0079] A sliding cavity 9-2 is provided inside the lower fixed plate 9, and the bushing tensioning clamp 3-6 is slidably connected to the inner wall of the sliding cavity 9-2. The lower outer wall of the bushing tensioning clamp 3-6 is slidably connected to a lower tooling sealing end cover 3-8, which is slidably connected to the lower end face of the lower fixed plate 9.

[0080] like Figures 14 to 15 As shown, in this embodiment, the bushing tensioning clamp 3-6 includes a sealing piston cylinder 3-6-1, the outer wall of which is slidably connected to the lower tooling sealing end cap 3-8. A clamping sleeve cap 3-6-2 is bolted to the upper part of the sealing piston cylinder 3-6-1, and the outer wall of the clamping sleeve cap 3-6-2 is slidably connected to the inner wall of the sliding cavity 9-2. Multiple sliding pressure heads 3-6-3 arranged in a ring are radially slidably connected inside the clamping sleeve cap 3-6-2, and the sliding pressure heads 3-6-3 are clamped to the pull rod 5-2-2.

[0081] A clamping concave cylinder 3-6-4, which can slide up and down, is slidably connected inside the sealing piston cylinder 3-6-1. The upper end of the clamping concave cylinder 3-6-4 has a pressing inclined surface 3-6-5 on its inner wall, and the lower end of the sliding pressure head 3-6-3 has a mating inclined surface 3-6-6. The mating inclined surface 3-6-6 and the pressing inclined surface 3-6-5 are in sliding engagement. When the clamping concave cylinder 3-6-4 moves upward, the pressing inclined surface 3-6-5 pushes the mating inclined surface 3-6-6, causing the sliding pressure head 3-6-3 to converge radially towards the center for clamping. A lifting piston rod 3-6-7 is bolted to the bottom of the clamping concave cylinder 3-6-4. The lifting piston rod 3-6-7 is slidably connected inside the sealing piston cylinder 3-6-1, and the lower end of the lifting piston rod 3-6-7 is fixedly connected to the output end of the clamping cylinder 3-6-9 via a second cylinder floating joint 3-6-8.

[0082] In this embodiment, the pushing device 3-7 includes a pushing plate 3-7-1. The upper end face of the pushing plate 3-7-1 is fixedly connected to the output end of the pushing cylinder 3-7-3. The pushing cylinder 3-7-3 is fixedly connected to the lower end face of the lower fixed plate 9. The upper end face of the pushing plate 3-7-1 is fixedly connected to the sealing piston cylinder 3-6-1 via a vertical rod 3-7-2. A clamping cylinder 3-6-9 is fixedly connected to the lower end face of the pushing plate 3-7-1, and a reserved hole is provided inside the pushing plate 3-7-1 for the output end of the clamping cylinder 3-6-9 to pass through. A limit frame 3-9 is fixedly connected to the lower end face of the lower tooling sealing end cover 3-8. The pushing plate 3-7-1 is movably mounted inside the limit frame 3-9, and the limit frame 3-9 limits the movement of the pushing plate 3-7-1.

[0083] During operation, the output end of clamping cylinder 3-6-9 extends upward, pushing the lifting piston rod 3-6-7 and clamping concave cylinder 3-6-4 upward. The extrusion slope 3-6-5 of clamping concave cylinder 3-6-4 pushes the docking slope 3-6-6, causing the sliding pressure head 3-6-3 to move towards the center and clamp the pull-down rod 5-2-2. With the pull-down rod 5-2-2 clamped, the push cylinder 3-7-3 operates, its output end extending downward to push the push plate 3-7-1 downward, causing the clamping cylinder 3-6-9, sealing piston cylinder 3-6-1, clamping sleeve cover 3-6-2, and sliding pressure head 3-6-3 to move downward. This, in turn, pulls down the pull-down rod 5-2-2 and extends the vulcanized rubber 5-2-1, increasing the internal volume of the bushing housing 5-1, after which the liquid filling process can begin.

[0084] like Figures 16 to 20As shown, in one embodiment for achieving the sliding connection of the sliding pressure head 3-6-3 within the clamping sleeve cover 3-6-2, this embodiment provides three sliding pressure heads 3-6-3. A clamping cavity 3-6-10 is located at the center of the clamping sleeve cover 3-6-2, and the clamping end of the sliding pressure head 3-6-3 is movably disposed within the clamping cavity 3-6-10. The sliding pressure head 3-6-3 is provided with a side arm, and a clamping spring 3-6-11 is provided on the side arm. One end of the clamping spring 3-6-11 abuts against the end of the side arm of the sliding pressure head 3-6-3, and the other end of the clamping spring 3-6-11 engages with the interior of the clamping sleeve cover 3-6-2. The clamping sleeve cover 3-6-2 also provides a sliding groove 3-6-12 that mates with the side arm of the sliding pressure head 3-6-3. Anti-slip textures 3-6-13 are provided inside the clamping end of the sliding pressure head 3-6-3.

[0085] When the pressing slope 3-6-5 pushes the mating slope 3-6-6, the side arm of the sliding pressure head 3-6-3 slides within the slide groove 3-6-12, the sliding pressure head 3-6-3 converges inward, the clamping spring 3-6-11 is compressed, and the anti-slip texture 3-6-13 abuts against the pull rod 5-2-2. When the output end of the clamping cylinder 3-6-9 resets, the clamping concave cylinder 3-6-4 moves downward, and the elastic force of the clamping spring 3-6-11 pushes the sliding pressure head 3-6-3 away from the center of the clamping cavity 3-6-10 to reset, thereby releasing the pull rod 5-2-2.

[0086] like Figures 1 to 20 As shown, the operation process of the present invention is as follows:

[0087] First, clamp the bushing housing 5-1 and place the bushing housing 5-1 inside the bushing fixing clamp 3-4. Then, start the bushing fixing cylinder 3-3 to push the two bushing fixing clamps 3-4 to close together, so that the bushing fixing clamps 3-4 clamp the outer wall of the bushing housing 5-1. When the clamping cylinder 3-6-9 is activated, it pushes the lifting piston rod 3-6-7 and the clamping concave cylinder 3-6-4 upwards, squeezing the inclined surface 3-6-5 and pushing the docking inclined surface 3-6-6, thereby causing the sliding pressure head 3-6-3 to move towards the center and clamp the pull-down rod 5-2-2. While keeping the pull-down rod 5-2-2 clamped, the push cylinder 3-7-3 is activated, pushing the push plate 3-7-1 downwards, which in turn moves the sealing piston cylinder 3-6-1, the clamping sleeve cover 3-6-2, and the sliding pressure head 3-6-3 downwards. This allows the pull-down rod 5-2-2 to be pulled downwards, causing the vulcanized rubber 5-2-1 to extend and increasing the internal volume of the bushing housing 5-1. After this, the liquid filling process can be carried out.

[0088] Then, the liquid filling process is carried out. The pull rod 5-2-2 remains in the pulled-down state, the liquid filling nozzle moving cylinder 2-8 is activated, pushing the liquid filling nozzle 2-2 and the drip liquid collection box 2-1 forward to near the top of the bushing housing 5-1. When the connecting frame 2-13 abuts against the pipe frame 2-14, the drip liquid collection box 2-1 stops moving. The liquid filling nozzle moving cylinder 2-8 continues to work. At this time, the first spring 2-10 is further compressed, and the limit ring 2-4-1 moves toward the connecting frame 2-13. The liquid filling nozzle 2-2 continues to move forward to the top of the bushing housing 5-1. Liquid filling is carried out by connecting to the external liquid filling equipment through the liquid pipe 2-4. After the liquid filling is completed, the liquid filling nozzle moving cylinder 2-8 resets, the first spring 2-10 resets, and the liquid filling nozzle 2-2 returns to the top of the drip liquid collection box 2-1 and finally resets. During this liquid filling process, the drip liquid from the liquid filling nozzle 2-2 falls into the drip liquid collection box 2-1, avoiding contamination of the equipment.

[0089] Finally, in the pressing process, the bushing cover 5-3 is placed on the bushing shell 5-1 after liquid filling. The pull rod 5-2-2 is kept in the pulled-down state, the hydraulic cylinder 10 is started, and the upper tooling 1 is pushed down, so that the upper tooling sealing barrel 1-5 and the lower tooling sealing barrel 3-1 are molded and sealed. At this time, the vacuum channel 3-5 is used to evacuate the lower tooling sealing barrel 3-1 and the interior of the upper tooling sealing barrel 1-5 into a vacuum. The vacuum pressure gauge 1-6 is observed until the required vacuum state is reached and then stopped. At this point, the upper tooling fixing plate 1-1 continues to press down, causing the tooling piston rod 1-2 to continue pressing down. The upper tooling sealing end cover 1-4 slides on the guide spring rod 1-3, the second spring 1-13 is compressed, the pre-pressing head 1-9 contacts the bushing upper cover 5-3, the third spring 1-7 is compressed, and the bushing upper cover 5-3 is pre-pressed. The tooling piston rod 1-2 continues to press down until the edge-rolling head 1-11 contacts the bushing fixing clamp 3-4, and the bushing upper cover 5-3 completes the press-fitting edge-rolling sealing work. After the work is completed, the hydraulic cylinder 10 resets, the upper tooling 1 resets, the clamping cylinder 3-6-9 resets and releases the pull rod 5-2-2, and the bushing fixing cylinder 3-3 resets, allowing the hydraulic bushing 5 to be removed.

[0090] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A new type of bushing vacuum liquid filling hydraulic press equipment for the production of hydraulic bushings (5), characterized in that: The hydraulic bushing (5) comprises a bushing shell (5-1), a lower sealing end (5-2), and a bushing upper cover (5-3), the upper part of the lower sealing end (5-2) is provided with vulcanized rubber (5-2-1) with elasticity, and the bottom center of the lower sealing end (5-2) is fixedly connected with a lower pull rod (5-2-2); Further comprising a machine body (12), the machine body (12) is fixedly provided with an upper fixed plate (8) and a lower fixed plate (9) opposite to each other, the upper fixed plate (8) is provided with an upper tooling (1) capable of sliding up and down, the upper tooling (1) is connected with the output end of an oil cylinder (10), and the oil cylinder (10) is arranged at the top end of the machine body (12); The lower fixed plate (9) is provided with a lower tooling (3), the lower tooling (3) is located directly below the upper tooling (1), and the lower tooling (3) comprises a lower tooling sealing barrel (3-1) and a bushing fixing clamp (3-4), the lower tooling sealing barrel (3-1) is provided with a vacuum extraction channel (3-5), the bushing fixing clamp (3-4) is power-connected with a bushing fixing cylinder (3-3), the bushing fixing clamp (3-4) is clamped with the outer wall of the bushing shell (5-1), a bushing tensioning clamp (3-6) is arranged below the bushing fixing clamp (3-4), the bushing tensioning clamp (3-6) is sealingly and slidably arranged in the lower fixed plate (9), the bushing tensioning clamp (3-6) is clamped with the lower sealing end (5-2), the bushing tensioning clamp (3-6) is arranged on a pushing device (3-7), and the pushing device (3-7) is arranged on the lower end face of the lower fixed plate (9); The upper tooling (1) comprises an upper tooling sealing barrel (1-5) and a hemming pressing head (1-11), the lower tooling sealing barrel (3-1) is clamped and sealed with the upper tooling sealing barrel (1-5), and the hemming pressing head (1-11) is abuttingly matched with the bushing upper cover (5-3); The machine body (12) is provided with a liquid filling device (2), and the liquid filling device (2) comprises a liquid filling nozzle (2-2) capable of extending above the bushing fixing clamp (3-4); During liquid filling, the bushing shell (5-1) is clamped, the lower pull rod (5-2-2) is pulled downward to increase the internal volume of the hydraulic bushing (5), then liquid is filled into the bushing shell (5-1), the bushing upper cover (5-3) is covered to perform press fitting and hemming, and finally the lower pull rod (5-2-2) is released to restore the internal volume of the hydraulic bushing (5).

2. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 1, characterized in that: The liquid filling nozzle (2-2) is connected with a liquid pipeline (2-4), a check valve (2-3) is arranged between the liquid filling nozzle (2-2) and the liquid pipeline (2-4), a dripping liquid collecting box (2-1) is arranged below the liquid filling nozzle (2-2), and the dripping liquid collecting box (2-1) is fixedly connected with a collecting box fixing rod (2-15); The liquid pipeline (2-4) and the collecting box fixing rod (2-15) are slidably arranged in a pipeline frame (2-14). The pipeline frame (2-14) is fixedly connected with a liquid filling nozzle moving cylinder (2-8), the telescopic end of the liquid filling nozzle moving cylinder (2-8) is fixedly connected with a connecting block (2-5), the connecting block (2-5) is fixedly connected on the liquid pipeline (2-4), and the connecting block (2-5) is located between the liquid filling nozzle (2-2) and the pipeline frame (2-14); The end of the collecting box fixing rod (2-15) is fixedly connected with a connecting frame (2-13), the connecting frame (2-13) is slidably connected with the liquid pipeline (2-4), the side, away from the connecting frame (2-13), of the liquid pipeline (2-4) is sleeved with a first spring (2-10), one end of the first spring (2-10) abuts against the connecting frame (2-13), and the liquid pipeline (2-4) is fixedly connected with a limiting ring (2-4-1); the other end of the first spring (2-10) abuts against the limiting ring (2-4-1). The side, facing the first spring (2-10), of the connecting frame (2-13) is provided with a spring limiting frame (2-12), and the spring limiting frame (2-12) is limitedly matched with the limiting ring (2-4-1).

3. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 2, characterized in that: The pipeline frame (2-14) is slidably arranged on a base (2-9), the base (2-9) is provided with a stand column (2-7), the stand column (2-7) is slidably connected with a height adjusting seat (2-6), and the height adjusting seat (2-6) is fixedly connected with the pipeline frame (2-14).

4. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 1, characterized in that: The upper tooling (1) comprises an upper tooling fixed plate (1-1), the upper end surface of the upper tooling fixed plate (1-1) is fixedly connected with a guide sliding column (7), and the guide sliding column (7) is slidably connected on the upper fixed plate (8). The upper end surface of the upper tooling fixed plate (1-1) is fixedly connected with a force sensor (6), the upper fixed plate (8) is provided with a circular hole (8-1), and the output end of the oil cylinder (10) is fixedly connected with the force sensor (6) after penetrating through the circular hole (8-1). The upper end surface of the upper tooling fixed plate (1-1) is fixedly connected with an auxiliary magnetic linear guide rail (4), the upper fixed plate (8) is provided with a reserved hole through which the auxiliary magnetic linear guide rail (4) penetrates and a displacement detection magnetic switch (4-1), and the auxiliary magnetic linear guide rail (4) is matched with the displacement detection magnetic switch (4-1) after penetrating through the upper fixed plate (8).

5. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 4, characterized in that: The lower end surface of the upper tooling fixed plate (1-1) is fixedly connected with a tooling piston rod (1-2), the lower end surface of the tooling piston rod (1-2) is fixedly connected with a curling edge pressing head (1-11), the outer wall of the tooling piston rod (1-2) is sealingly and slidably connected with an upper tooling sealing end cover (1-4), and the lower end surface of the upper tooling sealing end cover (1-4) is sealingly and fixedly connected with an upper tooling sealing barrel (1-5). The lower end surface of the upper tooling fixing plate (1-1) is fixedly connected with a plurality of guide sliding spring rods (1-3), the guide sliding spring rods (1-3) are in sliding connection and limiting cooperation with the upper tooling sealing end cover (1-4), the outer side of the guide sliding spring rod (1-3) is provided with a second spring (1-13), one end of the second spring (1-13) is in abutting cooperation with the upper tooling fixing plate (1-1), the other end of the second spring (1-13) is in abutting cooperation with the upper tooling sealing end cover (1-4).

6. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 5, characterized in that: The tooling piston rod (1-2) is provided with a concave cavity (1-14), the concave cavity (1-14) is provided with a third spring (1-7), a pre-pressing pressure head fixing block (1-8) and a pre-pressing pressure head (1-9), one end of the third spring (1-7) is in abutting cooperation with the inner wall of the tooling piston rod (1-2), the other end of the third spring (1-7) is in abutting cooperation with the upper end surface of the pre-pressing pressure head fixing block (1-8), the lower end surface of the pre-pressing pressure head fixing block (1-8) is fixedly connected with the pre-pressing pressure head (1-9), the crimping head (1-11) is provided with a pre-pressing cavity (1-12), the outer wall of the pre-pressing pressure head (1-9) is in sliding connection with the inner wall of the pre-pressing cavity (1-12); The pre-pressing cavity (1-12) is matched in shape with the bushing upper cover (5-3), the pre-pressing pressure head (1-9) is provided with a cavity matched in shape with the bushing upper cover (5-3); The lower end of the concave cavity (1-14) is fixedly connected with a limiting block (1-10), the limiting block (1-10) is in limiting cooperation with the pre-pressing pressure head fixing block (1-8).

7. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 1, characterized in that: The lower tooling sealing barrel (3-1) is sealingly and fixedly connected to the lower fixed plate (9), the side wall of the lower tooling sealing barrel (3-1) is sealingly connected with a sealing guide sleeve (3-12), the sealing guide sleeve (3-12) is sealingly and slidingly connected with a sealing rod (3-13), one end of the sealing rod (3-13) is fixedly connected with the bushing fixing clamp (3-4), the other end of the sealing rod (3-13) is connected with the output end of the bushing fixing cylinder (3-3) through a first cylinder floating joint (3-2), and the bushing fixing cylinder (3-3) is fixedly connected to the lower fixed plate (9); The bottom of the bushing fixing clamp (3-4) is provided with a clamp sliding block (3-11), the clamp sliding block (3-11) is slidingly connected to a guide plate (3-10), and the guide plate (3-10) is fixedly connected to the lower fixed plate (9).

8. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 1, characterized in that: The lower fixed plate (9) is provided with a sliding cavity (9-2), and the bushing tension clamp (3-6) is sealingly and slidingly connected to the sliding cavity (9-2); The lower part of the outer wall of the bushing tension clamp (3-6) is sealingly and slidingly connected with a lower tooling sealing end cover (3-8), and the lower tooling sealing end cover (3-8) is sealingly and fixedly connected to the lower end surface of the lower fixed plate (9).

9. The new bushing vacuum liquid filling hydraulic press loading apparatus according to claim 8, characterized in that: The bushing tension clamp (3-6) comprises a sealing piston cylinder (3-6-1), the upper part of the sealing piston cylinder (3-6-1) is fixedly connected with a clamping cover (3-6-2), the clamping cover (3-6-2) is slidably arranged in the sliding cavity (9-2), a plurality of sliding pressure heads (3-6-3) arranged in a ring shape are slidably connected in the clamping cover (3-6-2), and the sliding pressure heads (3-6-3) are clamped and matched with the lower pull rod (5-2-2); The outer wall of the sealing piston cylinder (3-6-1) is sealingly and slidably connected with the lower tool sealing end cover (3-8), a clamping concave cylinder (3-6-4) is slidably connected in the sealing piston cylinder (3-6-1), an extrusion inclined surface (3-6-5) is arranged on the inner wall of the upper end of the clamping concave cylinder (3-6-4), a butt joint inclined surface (3-6-6) is arranged on the lower end of the sliding pressure head (3-6-3), and the butt joint inclined surface (3-6-6) is slidably matched with the extrusion inclined surface (3-6-5); The bottom of the clamping concave cylinder (3-6-4) is fixedly connected with a jacking piston rod (3-6-7), the jacking piston rod (3-6-7) is sealingly and slidably connected in the sealing piston cylinder (3-6-1), and the lower end of the jacking piston rod (3-6-7) is fixedly connected with the output end of a clamping cylinder (3-6-9) through a second cylinder floating joint (3-6-8); The pushing device (3-7) comprises a pushing plate (3-7-1), the upper end surface of the pushing plate (3-7-1) is fixedly connected with the output end of a pushing cylinder (3-7-3), the pushing cylinder (3-7-3) is fixedly connected to the lower end surface of the lower fixed plate (9), and the upper end surface of the pushing plate (3-7-1) is fixedly connected with the sealing piston cylinder (3-6-1) through a vertical rod (3-7-2); The lower end surface of the pushing plate (3-7-1) is fixedly connected with the clamping cylinder (3-6-9), a reserved hole is arranged in the pushing plate (3-7-1) and used for allowing the output end of the clamping cylinder (3-6-9) to pass through, the pushing plate (3-7-1) is movably arranged in a limiting frame (3-9), and the limiting frame (3-9) is fixedly connected to the lower end surface of the lower tool sealing end cover (3-8).

10. The new bushing liquid vacuum pressure filling and press-fitting apparatus according to claim 9, characterized in that: A clamping cavity (3-6-10) is arranged at the center position of the clamping cover (3-6-2), the clamping end of the sliding pressure head (3-6-3) is movably arranged in the clamping cavity (3-6-10), a clamping spring (3-6-11) is arranged on the side arm of the sliding pressure head (3-6-3), one end of the clamping spring (3-6-11) abuts against the side arm of the sliding pressure head (3-6-3), and the other end of the clamping spring (3-6-11) abuts against the clamping cover (3-6-2); A sliding groove (3-6-12) matched with the side arm of the sliding pressure head (3-6-3) is arranged in the clamping cover (3-6-2); An anti-skid pattern (3-6-13) is arranged in the clamping end of the sliding pressure head (3-6-3).

Images