Filling and sealing equipment and its filling and sealing method for high viscosity silicone oil bushings

Abstract

This invention relates to a filling and sealing device and a filling and sealing method for high-viscosity silicone oil bushings. The device includes an operating table and a filling mechanism and a sealing mechanism mounted on the operating table. The filling mechanism includes a liquid storage funnel, a filling frame, a filling electric cylinder, a liquid storage cylinder, a heating coil, a filling head, and a filling needle. A preheater is placed inside the liquid storage funnel, and an annular heating element is installed in the outlet of the funnel. The heating coil is installed on the outside of the liquid storage cylinder. The sealing mechanism includes a sealing base plate fixed to the operating table, a column frame fixed to the sealing base plate, a fixing plate mounted on the column frame, and a sealing electric cylinder mounted on the fixing plate. The piston rod of the sealing electric cylinder passes through the fixing plate, and a sealing pressure rod is installed at the bottom end of the piston rod. This filling and sealing device has a simple structure, low cost, and is suitable for filling high-viscosity liquids. When used for filling high-viscosity silicone oil bushings, the filling quality is good.

Description

Technical Field

[0001] This invention relates to a filling and sealing device and a filling and sealing method, and particularly to a filling and sealing device and a filling and sealing method for high-viscosity silicone oil bushings. Background Technology

[0002] Many product manufacturing processes require the use of filling and sealing equipment. Dedicated filling equipment typically employs vacuum filling, which involves creating a vacuum in the chamber before filling with the liquid. General filling equipment is mostly suitable for filling low-viscosity liquids. When filling high-viscosity liquids, specialized modifications are needed to increase the negative pressure of the vacuum filling process to ensure that all air is removed from the product's chamber, creating a vacuum. Furthermore, due to the poor flowability of high-viscosity liquids, using ordinary filling equipment results in long filling times, low filling efficiency, and a higher likelihood of equipment malfunction.

[0003] Currently, the filling and sealing of high-viscosity silicone oil bushings involves using specialized filling fixtures followed by steel ball sealing. However, these specialized filling fixtures are expensive, typically costing over 300,000 RMB, resulting in high economic costs. For small-batch production units, using these specialized filling fixtures for high-viscosity silicone oil bushings would significantly increase production costs. If other high-viscosity material filling equipment is used, the high-viscosity silicone oil may contain residual gas. Filling the bushing with high-viscosity silicone oil containing gas will affect the filling quality, specifically causing the following problems: 1. Bushings installed on vehicles will produce whistling noises at high frequencies (such as on highways), affecting vehicle comfort; 2. Performance impact: The presence of gas in the silicone oil results in a smaller actual filling volume than the designed filling volume, leading to a relative decrease in damping and dynamic stiffness, thus affecting product performance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a filling and sealing device and a filling and sealing method for high viscosity silicone oil bushings. The filling and sealing device has a simple structure, low cost, and is applicable to the filling of high viscosity liquids. When the device is used for filling high viscosity silicone oil bushings, the filling quality is good.

[0005] The technical solution to the above-mentioned technical problems is: a filling and sealing device, including an operating table and a filling mechanism and a sealing mechanism installed on the operating table. The filling mechanism includes a liquid storage funnel, a filling frame, a filling electric cylinder, a liquid storage cylinder, a heating coil, a filling head, and a filling needle with telescopic function installed on the filling head. A preheater is placed inside the liquid storage funnel, and an annular heating element is provided in the outlet of the liquid storage funnel. The liquid storage funnel is fixed on the filling frame. The piston rod of the filling electric cylinder extends into the liquid storage cylinder and seals against the inner wall of the liquid storage cylinder. The liquid storage cylinder has a liquid inlet and a liquid outlet. The heating coil is installed on the outside of the liquid storage cylinder. The outlet of the liquid storage funnel and the liquid inlet of the liquid storage cylinder are connected through an inlet pipe. A valve is provided on the inlet pipe. The liquid outlet of the liquid storage cylinder and the filling head are connected through an outlet pipe. The filling head is detachably installed on the filling frame, and the filling needle is connected to the outlet pipe through the filling head.

[0006] The sealing mechanism includes a sealing base plate fixed on the operating table, a column frame fixed on the sealing base plate, a fixing plate installed on the column frame, and a sealing electric cylinder installed on the fixing plate. The piston rod of the sealing electric cylinder passes through the fixing plate, and a sealing pressure rod is installed at the bottom end of the piston rod of the sealing electric cylinder.

[0007] Furthermore, the sealing base plate of the sealing mechanism is provided with a sealing fixing fixture for positioning the product to be sealed, and the operating table is provided with a filling positioning fixture for positioning the product to be filled.

[0008] Furthermore, the outlet inner diameter of the liquid storage funnel is 10-40 mm, the thickness of the annular heating plate is 10-35 mm, and the diameter of the annular heating plate is 40-100 mm.

[0009] Furthermore, the filling mechanism also includes a heating module that supplies power to the heating coil and the annular heating element, and the heating coil and the annular heating element are electrically connected to the heating module.

[0010] Furthermore, the filling mechanism also includes a liquid storage frame, with the liquid storage cylinder and heating coil located inside the liquid storage frame, and the heating module located outside the liquid storage frame and fixedly connected to the liquid storage frame.

[0011] Furthermore, the sealing pressure rod of the sealing mechanism is provided with a frustum section that is larger at the top and smaller at the bottom.

[0012] Furthermore, the filling needle includes a needle sleeve, a needle tip, a depth-fixing pin, and springs A and B located inside the needle sleeve. The filling head has a concave mounting groove. One end of the needle sleeve is installed in the concave mounting groove of the filling head. The needle tip is T-shaped, with the upper end of the needle tip inside the needle sleeve and the lower end of the needle tip extending outside the needle sleeve. The upper end of the needle tip is in sealed contact with the inner wall of the needle sleeve. Spring A is installed between the upper end of the needle tip and the concave mounting groove of the filling head. The depth-fixing pin passes through the needle sleeve and connects to the upper end of the needle tip. Spring B is located between the bottom end of the needle sleeve and the upper end of the needle tip and is fitted onto the outside of the depth-fixing pin.

[0013] Another technical solution of the present invention is: a filling and sealing device for filling and sealing high viscosity silicone oil bushings, wherein the power of the annular heating element is 350-500W and the power of the heating coil is 500-1000W.

[0014] Includes the following steps:

[0015] (1) Add high-viscosity silicone oil into the liquid storage funnel of the filling mechanism and heat it to 30-70℃ through a preheater;

[0016] (2) After starting the ring heating element for 6-10 minutes, open the valve to allow the high-viscosity silicone oil to enter the storage tank through the inlet pipe. After the high-viscosity silicone oil fills the storage tank, start the heating element and close the valve at the same time.

[0017] (3) Place the bushing on the filling positioning fixture, insert the filling needle into the filling port of the bushing and extend it to the bottom of the cavity, start the filling electric cylinder to push the high viscosity silicone oil into the bushing cavity along the liquid outlet pipe, filling head and filling needle;

[0018] (4) Fill according to the set time. After the filling time is reached, turn off the filling electric cylinder to stop filling. At this time, liquid will slightly overflow from the filling port of the bushing. Pull out the filling needle to complete the filling.

[0019] (5) Position the bushing on the sealing fixture, place the steel ball for sealing on the bushing filling port, start the sealing electric cylinder to drive the sealing pressure rod to press down and press the steel ball into the bushing filling port, the sealing electric cylinder rises back, the sealing pressure rod rises up, the bushing is removed, and the sealing is completed.

[0020] Furthermore, in step (3), when the bushing is placed on the filling positioning fixture, the bushing is in an inclined state, that is, the end of the bushing with the filling port is in a high position and the other end is in a low position.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects:

[0022] 1. This invention provides a low-cost filling and sealing device suitable for filling high-viscosity liquids. The device has a simple structure, is easy to manufacture, and costs approximately 30,000 RMB, making it suitable for small-scale production units. Instead of vacuum filling, this device uses an electric cylinder pressurized quantitative filling method, thus making it suitable not only for general liquids but also for high-viscosity liquids; that is, liquids with a viscosity of CS5 to 15000 can be filled using this device.

[0023] 2. Equipped with multiple heating devices, this equipment offers excellent filling performance for high-viscosity liquids. High-viscosity liquids generally have relatively poor flowability. This equipment features a preheater inside the storage funnel, an annular heating element at the funnel outlet, and a heating coil outside the storage tank. These features improve the liquid's flowability, reducing filling time, increasing filling efficiency, and resulting in better filling and filling effects. Furthermore, the annular heating element ensures the high-viscosity liquid reaches the correct temperature when exiting the storage funnel, allowing gas within the liquid to escape upwards, eliminating residual gas and improving filling quality.

[0024] 3. Bottom-up filling improves filling quality. When using this equipment for filling high-viscosity silicone oil bushings, the filling needle extends from the filling port to the bottom of the product cavity, and the liquid gradually fills from the bottom up while venting air from the filling port. Once liquid appears at the filling port, it ensures that the product cavity is completely filled. Furthermore, the combination of the annular heating element and the preheater helps to expel gas from the high-viscosity silicone oil, further improving filling quality.

[0025] The technical features of a filling and sealing device and a filling and sealing method for high-viscosity silicone oil bushings according to the present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0026] Figure 1 One of the perspective views of the filling and sealing equipment of the present invention (with a bushing placed on it).

[0027] Figure 2 : Second perspective view of the filling and sealing equipment of the present invention (without bushing).

[0028] Figure 3 : The third perspective view of the filling and sealing equipment of the present invention (the sealing frame and filling frame are omitted).

[0029] Figure 4 : Schematic diagram of the filling mechanism of the present invention (filling frame omitted).

[0030] Figure 5 : A cross-sectional view of the filling mechanism of the present invention (filling frame omitted).

[0031] Figure 6 : A three-dimensional view of the sealing mechanism of the present invention.

[0032] Figure 7 : Schematic diagram (partial section) of the sealing mechanism of the present invention.

[0033] Figure 8 : Figure 7 Enlarged view of part A.

[0034] Figure 9 : Schematic diagram of the filling needle structure of the present invention.

[0035] In the diagram, 1-control panel, 11-adjustable base.

[0036] 2-Filling mechanism, 21-Liquid storage funnel, 22-Filling frame, 23-Filling head, 24-Filling needle, 241-Needle tip, 242-Depth pin, 243-Spring B, 244-O-ring seal, 245-Needle sleeve, 246-Spring A, 247-Sealing ring, 25-Filling positioning fixture, 251-Boss, 26-Filling operation button, 27-Inlet pipe, 28-Filling electric cylinder, 281-Piston rod of filling electric cylinder, 29-Liquid storage frame, 210-Outlet pipe, 211-Liquid storage cylinder, 212-Heating module, 213-Annular heating element, 214-Valve, 215-Heating coil, 216-Preheater.

[0037] 3-Sealing mechanism, 31-Sealing base plate, 32-Sealing fixing fixture, 33-Column frame, 34-Fixing plate, 35-Sealing display screen and buttons, 36-Sealing frame, 37-Sealing electric cylinder, 371-Piston rod of sealing electric cylinder, 38-Sealing motor, 39-Sealing pressure rod, 391-Frustum section, 310-Threaded sleeve, 311-Anti-rotation positioning pin.

[0038] P represents high-viscosity silicone oil bushing, and P1 represents high-viscosity silicone oil. Detailed Implementation Example 1:

[0039] A filling and sealing device, such as Figures 1-8 As shown, the system includes an operating table 1 and a filling mechanism 2 and a sealing mechanism 3 mounted on the operating table. The operating table 1 is equipped with four support legs, and each of the four support legs has an adjustable base 11 at its bottom end, which can adjust the height of the operating table.

[0040] The filling mechanism 2 includes a liquid storage funnel 21, a filling frame 22, a filling electric cylinder 28, a liquid storage cylinder 211, a heating coil 215, a filling head 23, and a retractable filling needle 24 mounted on the filling head. A preheater 216 is placed inside the liquid storage funnel 21, and an annular heating element 213 is provided in the outlet of the liquid storage funnel 21. The liquid storage funnel 21 is fixed on the filling frame 22. The piston rod 281 of the filling electric cylinder extends into the liquid storage cylinder 211 and makes sealed contact with the inner wall of the liquid storage cylinder. The liquid in the storage cylinder 211 is pushed out by the piston rod 281 of the filling electric cylinder. The storage cylinder 211 has a liquid inlet and a liquid outlet. A heating coil 215 is installed around the outside of the storage cylinder 211. The outlet of the storage funnel 21 and the liquid inlet of the storage cylinder 211 are connected by a liquid inlet pipe 27. A valve 214 is installed on the liquid inlet pipe 27. The liquid outlet of the storage cylinder 211 and the filling head 23 are connected by a liquid outlet pipe 210. The filling needle 24 is connected to the liquid outlet pipe 210 through the filling head 23. The filling head 23 is detachably installed on the filling frame 22. A filling positioning fixture 25 for positioning the product to be filled is provided on the operating table. The filling positioning fixture 25 is installed on the operating table 1 by a screw.

[0041] The sealing mechanism 3 includes a sealing base plate 31 fixed on the operating table 1, a column frame 33 fixed on the sealing base plate 31, a fixing plate 34 installed on the column frame 33, and a sealing electric cylinder 37 installed on the fixing plate. The piston rod 371 of the sealing electric cylinder passes through the fixing plate 31. A sealing pressure rod 39 is installed at the bottom end of the piston rod of the sealing electric cylinder. That is, the sealing pressure rod 39 is installed on the piston rod 371 of the sealing electric cylinder through a threaded sleeve 310. The threaded sleeve 310 serves to connect the piston rod 371 of the sealing electric cylinder and the sealing pressure rod 39, and at the same time protects the sealing pressure rod 39 to prevent it from becoming too long and deforming. The sealing pressure rod 39 of the sealing mechanism has a frustum section 391 in the middle, which is larger at the top and smaller at the bottom. The purpose of setting the frustum section 391 is to squeeze the product filling port while the sealing pressure rod 39 presses the steel ball into the product filling port, thereby narrowing the opening and further ensuring the sealing quality. The sealing mechanism has a sealing fixture 32 on its sealing base plate for positioning the product to be sealed. The sealing fixture 32 is fixed to the sealing base plate 31 by an anti-rotation positioning pin 311. After the product to be sealed is fixed by the sealing fixture 32, the steel ball will not be misaligned when it is being struck, and the force / displacement of the steel ball can be guaranteed, ensuring the sealing effect of the product. Before sealing the product, the sealing fixture and the sealing pressure rod must be pre-aligned.

[0042] In this embodiment, the outlet inner diameter of the liquid storage funnel is 10-40 mm, preferably 20 mm; the thickness of the annular heating element is 10-35 mm, preferably 25 mm; and the diameter of the annular heating element is 40-100 mm, preferably 60 mm. Alternatively, the specific parameters of the outlet of the liquid storage funnel and the annular heating element can be adjusted according to actual conditions.

[0043] In this embodiment, the filling mechanism 2 further includes a heating module 212 that supplies power to the heating coil 215 and the annular heating element 213, and the heating coil 215 and the annular heating element 213 are electrically connected to the heating module 212. The filling mechanism also includes a liquid storage frame 29, with part of the liquid storage cylinder 211 and all of the heating coil 215 located inside the liquid storage frame 29, and the heating module 212 located outside the liquid storage frame 29 and fixedly connected to the liquid storage frame. A filling motor (not shown in the figure) that supplies power to the filling electric cylinder 28 is also provided inside the filling frame 22. As an alternative, the heating coil 215, the annular heating element 213, and the filling electric cylinder 28 can also be powered by other methods.

[0044] In this embodiment, a sealing frame 36 is also provided on the fixing plate 34 of the sealing mechanism 3, and a sealing electric cylinder 37 is located inside the sealing frame 36. A sealing motor 38 for supplying power to the sealing electric cylinder 37 is also provided. A sealing display screen and buttons 35 are also provided on the sealing frame.

[0045] In this embodiment, the filling needle 24 (such as...) Figure 9 (As shown) includes a needle sleeve 245, a needle 241, a depth-fixing pin 242, and springs A246 and B243 located inside the needle sleeve. The filling head 23 has a concave mounting groove for mounting the filling needle. One end of the needle sleeve 245 of the filling needle 24 is installed in the concave mounting groove of the filling head. The needle 241 is T-shaped, with the upper end of the needle inside the needle sleeve and the lower end extending outside the needle sleeve. The upper end of the needle is in sealing contact with the inner wall of the needle sleeve. Spring A246 is installed between the upper end of the needle and the concave mounting groove of the filling head. The depth-fixing pin 242 passes through the needle sleeve and connects to the upper end of the needle. Spring B243 is located between the bottom end of the needle sleeve and the upper end of the needle and is fitted onto the outside of the depth-fixing pin 242. An O-ring 244 is provided between the outer side of the upper end of the needle 241 and the needle sleeve 245, and a sealing ring 247 is provided on the contact surface between the bottom end of the needle sleeve and the needle. By pressing the depth-fixing pin 242 upwards, the length of the needle protruding from the needle sheath can be shortened, making it easier to insert or remove the needle from the product. The filling head 23 has a liquid injection channel connecting the filling needle 24 and the liquid outlet tube 210. Alternatively, the filling needle can employ other structures, as long as they facilitate insertion and removal of the needle from the product.

[0046] In this embodiment, the filling and sealing mechanisms are separate, allowing for post-filling inspection. Current dedicated filling equipment involves continuous filling and sealing, with product filling quality only checked after output. Unlike dedicated filling equipment, this embodiment separates filling and sealing into two processes, enabling visual inspection of the filling results after filling. Example 2:

[0047] A filling and sealing device for filling and sealing high-viscosity silicone oil bushings, using the filling and sealing device described in Example 1, wherein the power of the annular heating element is 400W and the power of the heating coil is 700W;

[0048] Includes the following steps:

[0049] (1) Add high-viscosity silicone oil with a viscosity of CS13000 into the liquid storage funnel 21 of the filling mechanism and heat it to 45°C through the preheater 216.

[0050] (2) After heating with the annular heating element 213 for 8 minutes, open valve 214 to allow high-viscosity silicone oil to enter the storage tank 211 through the inlet pipe 27. Once the storage tank is full of high-viscosity silicone oil, start heating coil 215 and simultaneously close valve 214. The function of the annular heating element 213 is to allow the gas in the high-viscosity silicone oil to be discharged upwards, ensuring that there is essentially no gas in the high-viscosity silicone oil. The function of heating coil 215 is to increase the fluidity of the high-viscosity silicone oil, ensuring smooth filling.

[0051] (3) Place the bushing P to be filled on the filling positioning fixture 25. The filling positioning fixture 25 is a structure similar to an inverted 7 with a boss 251. One end of the bushing with the filling port is placed on the boss, so that the bushing is in an inclined state, that is, the end of the bushing with the filling port is in a high position and the other end is in a low position. Press the depth pin 242 of the filling needle upward to shorten the needle 241. Insert the needle 241 into the filling port of the bushing. Loosen the depth pin to lengthen the needle and extend it to the bottom of the cavity. Start the filling electric cylinder 28 to push the high viscosity silicone oil into the bushing cavity along the liquid outlet pipe 210, the filling head 23 and the filling needle 24. The inclined placement of the bushing is more conducive to the silicone oil flowing to the other end during filling, which increases the filling speed.

[0052] (4) Fill according to the set time. After the filling time is reached, turn off the filling electric cylinder to stop filling. At this time, liquid will overflow slightly from the filling port of the bushing. Press the fixed depth pin of the filling needle upward to pull out the needle of the filling needle. Filling is complete.

[0053] (5) Position the bushing on the sealing fixture 32, place the steel ball for sealing on the bushing filling port, start the sealing electric cylinder 37 to drive the sealing pressure rod 39 to press down and press the steel ball into the bushing filling port, the sealing electric cylinder rises, the sealing pressure rod rises, the bushing is removed, and the sealing is completed.

[0054] The present invention adopts a quantitative (volume) filling method based on the bushing volume, that is, the advancing speed of the piston rod of the filling electric cylinder is preset, and the volume of silicone oil filled is controlled by controlling the filling time.

[0055] The following tests were performed on 20 bushings after filling and sealing using this embodiment:

[0056] 1. Weighing (simple test in the production process).

[0057] Reason: When gas seeps in, the viscosity / density of the liquid changes, resulting in a large change in weight.

[0058] The bushing is designed to weigh 160g. Before filling, the bushing weighs 1440±1g, and after filling, it weighs 1600±1g. The weight comparison before and after filling shows that there is basically no gas residue in the silicone oil.

[0059] 2. Randomly sample and test performance, judging from parameters such as dynamic stiffness and loss angle.

[0060] All test results met the following criteria: dynamic stiffness: 470±20N / mm, loss angle: 25±1deg, indicating that there was no residual gas in the silicone oil and the product's performance requirements were met.

[0061] 3. Randomly sample and test for high-frequency abnormal noises.

[0062] Sweep the frequency from 200-500Hz and test the decibel change. If the change is less than 3dB, it indicates that the high-frequency abnormal noise meets the requirements.

Claims

1. A filling and sealing apparatus, characterized in that: The filling and sealing device comprises an operation table (1) and a filling mechanism (2) and a sealing mechanism (3) mounted on the operation table, the filling mechanism comprises a liquid storage funnel (21), a filling frame (22), a filling electric cylinder (28), a liquid storage cylinder (211), a heating ring (215), a filling head (23) and a filling needle (24) with telescopic function mounted on the filling head, a pre-heater (216) is arranged in the liquid storage funnel, an annular heating sheet (213) is arranged at the outlet of the liquid storage funnel, the liquid storage funnel is fixed on the filling frame, the piston rod of the filling electric cylinder extends into the liquid storage cylinder and is in sealing contact with the inner wall of the liquid storage cylinder, a liquid inlet and a liquid outlet are formed on the liquid storage cylinder, the heating ring is mounted on the outer side of the liquid storage cylinder, the outlet of the liquid storage funnel and the liquid inlet of the liquid storage cylinder are communicated through a liquid inlet pipe (27), a valve (214) is arranged on the liquid inlet pipe, the liquid outlet of the liquid storage cylinder and the filling head are communicated through a liquid outlet pipe (210), the filling head is detachably mounted on the filling frame (22), the filling needle is communicated with the liquid outlet pipe through the filling head; The sealing mechanism (3) comprises a sealing bottom plate (31) fixed on the operation table, a stand frame (33) fixed on the sealing bottom plate, a fixing plate (34) mounted on the stand frame, and a sealing electric cylinder (37) mounted on the fixing plate, the piston rod (371) of the sealing electric cylinder penetrates through the fixing plate, and a sealing pressing rod (39) is mounted at the bottom end of the piston rod of the sealing electric cylinder; The filling needle (24) comprises a needle sleeve (245), a needle head (241), a depth setting pin (242), a spring A (246) and a spring B (243) arranged in the needle sleeve, a concave mounting groove is formed on the filling head, one end of the needle sleeve is mounted in the concave mounting groove of the filling head, the needle head is T-shaped, the upper end of the needle head is located in the needle sleeve, the lower end of the needle head extends out of the needle sleeve, the upper end of the needle head is in sealing contact with the inner wall of the needle sleeve, the spring A is mounted between the upper end of the needle head and the concave mounting groove of the filling head, the depth setting pin penetrates through the needle sleeve and is connected with the upper end of the needle head, and the spring B is located between the bottom end of the needle sleeve and the upper end of the needle head and is sleeved on the outer side of the depth setting pin.

2. The fill-seal apparatus of claim 1, wherein: A sealing fixing tool (32) for positioning a product to be sealed is arranged on the sealing bottom plate of the sealing mechanism, and a filling positioning tool (25) for positioning a product to be filled is arranged on the operation table.

3. The fill-seal apparatus of claim 2, wherein: The outlet of the liquid storage funnel has an inner diameter of 10-40 mm, the annular heating sheet has a thickness of 10-35 mm and a diameter of 40-100 mm.

4. The filling and sealing apparatus according to any one of claims 1 to 3, characterized in that: The filling mechanism further comprises a heating module (212) for supplying power to the heating ring and the annular heating sheet, and the heating ring and the annular heating sheet are electrically connected with the heating module.

5. The fill-seal apparatus of claim 4, wherein: The filling mechanism further comprises a liquid storage frame (29), the liquid storage cylinder and the heating ring are located in the liquid storage frame, and the heating module is located outside the liquid storage frame and is fixedly connected with the liquid storage frame.

6. The filling and sealing apparatus according to any one of claims 1 to 3, characterized in that: The sealing pressing rod of the sealing mechanism is provided with a circular table section (391) which is large at the top and small at the bottom.

7. A method for filling and sealing a high viscosity silicone oil liner using a filling and sealing apparatus, characterized by: The filling and sealing device adopts the filling and sealing device as claimed in claim 3, the power of the annular heating sheet is 350-500 W, and the power of the heating ring is 500-1000 W; The method comprises the following steps: (1) high viscosity silicone oil is added into the liquid storage funnel of the filling mechanism, and heated to 30-70℃ by the pre-heater; (2) after the annular heating sheet is started for 6-10 minutes, the valve is opened to make the high viscosity silicone oil enter the liquid storage cylinder through the liquid inlet pipe, the high viscosity silicone oil fills the liquid storage cylinder, the heating ring is started, and the valve is closed; (3) the bushing is placed on the filling positioning tool, the filling needle is inserted into the filling port of the bushing and extends to the bottom of the cavity, the filling electric cylinder is started to push the high viscosity silicone oil into the cavity of the bushing along the liquid outlet pipe, the filling head and the filling needle; (4) the filling is performed according to the set time, the filling electric cylinder is closed to stop the filling when the filling time is reached, at this time, the filling port of the bushing has slight liquid overflow, the filling needle is pulled out, and the filling is completed; (5) the bushing is positioned on the sealing fixing tool, the steel ball used for sealing is placed on the filling port of the bushing, the sealing electric cylinder is started to drive the sealing pressure rod to press the steel ball into the filling port of the bushing, the sealing electric cylinder is lifted back, the sealing pressure rod is lifted up, the bushing is taken out, and the sealing is completed.

8. The method for filling and sealing of high viscosity silicone oil liner according to claim 7, wherein: In step (3), when the bushing is placed on the filling positioning tool, the bushing is in an inclined state, that is, one end of the bushing provided with the filling port is in a high position, and the other end is in a low position.

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