Sensor oil filling device

Abstract

The utility model discloses a sensor oil filling device, sensor oil filling device includes: the upper air cylinder is arranged at the top of upper roof, and the upper base plate moves under the drive of upper air cylinder, one side of upper base plate is provided with first recess, is provided with a plurality of syringes in first recess, is provided with a plurality of syringe control valve between upper roof and upper base plate, and syringe and syringe control valve correspond one to one, and syringe assembly carries out oil filling operation under the drive of syringe control valve, one side of lower base plate is provided with second recess, is provided with the supporting plate bottom plate and tray in second recess, is provided with a plurality of material containing grooves on tray, and material containing groove and syringe correspond one to one, when the upper base plate is assembled on the lower base plate, first recess and second recess combination form cavity, is provided with the air extraction hole of intercommunication with cavity on the lower base plate, and the air extraction hole is connected with the air inlet end of vacuum pump through gas delivery pipe, and the lower air cylinder is transmission connection with supporting plate bottom plate through jacking assembly, the utility model discloses can improve the oil filling effect.

Description

Technical Field

[0001] This invention relates to the field of sensor oil filling technology, and in particular to a sensor oil filling device. Background Technology

[0002] Pressure and differential pressure sensors with diaphragms typically use silicone oil as the pressure-transmitting medium, and the quality of the oil filling directly affects the sensor's performance. Current technology involves leaving an oil filling hole in the wall of the sensor's oil-filled chamber, placing the sensor in a cup (or bucket) filled with silicone oil, and then placing the cup (or bucket) in a vacuum chamber to create a vacuum. Due to the pressure difference, gas inside the sensor chamber escapes through the oil filling hole, while silicone oil flows into the chamber. After a certain period of evacuation, once all the bubbles have escaped, the chamber is considered to be filled with silicone oil. However, because the chamber's shape is irregular, its surface finish is poor, the vent is small, and there is often blockage from highly viscous oil, it is difficult for gas adsorbed on the surface to escape. Furthermore, in practice, the oil filling hole is often not at the very top of the cavity; gas above the filling hole is even more difficult to expel, resulting in poor oil filling performance.

[0003] Therefore, existing oil-filling technologies suffer from poor oil-filling effects. Utility Model Content

[0004] The purpose of this invention is to provide a sensor oil filling device, which aims to solve the problem of poor oil filling effect in existing oil filling technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sensor oil filling device is provided, the sensor oil filling device includes an upper cylinder, an upper top plate, an upper base plate, a lower base plate, a lower cylinder, a lower bottom plate and a first guide post assembly;

[0006] The first guide post assembly is disposed above the lower base plate, and the first guide post assembly passes through the lower base plate and the upper base plate in sequence and is connected to the upper top plate;

[0007] The upper cylinder is disposed above the upper top plate. The first piston rod of the upper cylinder passes through the upper top plate and is connected to the upper base plate in a transmission manner. The upper base plate moves along the first guide post assembly under the drive of the upper cylinder.

[0008] A first groove is provided on one side of the upper substrate facing the lower substrate. A plurality of syringes are provided in the first groove. A plurality of syringe control valves are provided between the upper top plate and the upper substrate. Each syringe corresponds to a syringe control valve. The syringes are filled with oil under the drive of the syringe control valves.

[0009] A second groove is provided on one side of the lower substrate facing the upper substrate. A support plate and a material tray are provided in the second groove. The material tray is located above the support plate and has a plurality of material receiving slots, each corresponding to a syringe.

[0010] When the upper substrate is assembled on the lower substrate, the first groove and the second groove combine to form a cavity. The lower substrate is provided with an air extraction hole that communicates with the cavity. The air extraction hole is connected to the air inlet of the vacuum pump through an air supply pipe.

[0011] The lower cylinder is located above the lower base plate. The lower cylinder is connected to the pallet base plate via a lifting assembly. The pallet base plate moves up or down under the drive of the lower cylinder.

[0012] Furthermore, the lifting assembly includes a lifting plate and a second guide column assembly. One side of the lifting plate is connected to the second piston rod of the lower cylinder, and the other side of the lifting plate is connected to the second guide column assembly.

[0013] The second guide post assembly consists of four second guide posts. The end of the second guide post that is not connected to the lifting plate passes through the lower base plate and connects to the bottom plate of the support plate.

[0014] Furthermore, the lower base plate is provided with a plurality of guide post holes, each of which corresponds one-to-one with the second guide post. The end of the second guide post that is not connected to the lifting plate passes through the guide post hole and connects to the bottom plate of the support plate.

[0015] The outer wall of the second guide post is provided with a first sealing ring, which is disposed between the guide post hole and the second guide post.

[0016] Furthermore, the bottom plate of the tray is provided with a plurality of guide post grooves on one side facing the lower substrate, and the guide post grooves correspond one-to-one with the second guide post.

[0017] Furthermore, the pallet base plate is provided with a plurality of first positioning pins, and the tray is provided with a plurality of first positioning holes, with each first positioning pin corresponding to a first positioning hole.

[0018] Furthermore, a plurality of second positioning pins are provided on one side of the lower substrate facing the upper substrate, and a plurality of second positioning holes are provided on one side of the upper substrate facing the lower substrate, with each second positioning pin corresponding to a second positioning hole.

[0019] Furthermore, a second sealing ring is provided on one side of the lower substrate facing the upper substrate, and the second sealing ring is disposed on the outer periphery of the second groove.

[0020] Furthermore, each syringe has an oil injection nozzle at one end facing the lower substrate, and the oil injection nozzle is made of soft rubber.

[0021] Furthermore, the first guide post assembly consists of four first guide posts, which are respectively disposed at the four apex corners of the lower base plate, and the first guide posts are cylindrical structures.

[0022] Furthermore, the upper cylinder is fixedly connected to the upper top plate by a number of first screws, and the lower cylinder is fixedly connected to the lower bottom plate by a number of second screws.

[0023] This utility model discloses a sensor oil filling device, which includes an upper cylinder, an upper top plate, an upper base plate, a lower base plate, a lower cylinder, a lower bottom plate, and a first guide post assembly. The first guide post assembly is disposed above the lower bottom plate and passes through the lower base plate and the upper base plate in sequence before connecting to the upper top plate. The upper cylinder is disposed above the upper top plate, and the first piston rod of the upper cylinder passes through the upper top plate and is drively connected to the upper base plate. The upper base plate moves along the first guide post assembly under the drive of the upper cylinder. A first groove is provided on one side of the upper base plate facing the lower base plate, and a plurality of syringes are disposed in the first groove. A plurality of syringe control valves are disposed between the upper top plate and the upper base plate. The control valves are configured one-to-one, and the syringe is filled with oil under the drive of the syringe control valve. A second groove is provided on one side of the lower base plate facing the upper base plate. A support plate and a material tray are provided in the second groove. The material tray is located above the support plate and has several material slots, each corresponding to a syringe. When the upper base plate is assembled on the lower base plate, the first groove and the second groove combine to form a cavity. An air extraction hole is provided on the lower base plate and communicates with the cavity. The air extraction hole is connected to the air inlet of a vacuum pump through an air supply pipe. A lower cylinder is located above the lower base plate and is driven by a lifting assembly to the support plate. The support plate moves up or down under the drive of the lower cylinder. In this embodiment of the utility model, the tray is used to place the part to be filled with oil. When the upper substrate is assembled on the lower substrate, the first groove and the second groove combine to form a cavity. The cavity is evacuated to help expel the gas inside the part to be filled with oil. Then, the part to be filled with oil is filled in the vacuum environment so that the silicone oil fills the inside of the part to be filled with oil, thereby improving the filling effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 Exploded view of the sensor oil filling device provided in the embodiment of this utility model;

[0026] Figure 2 A structural diagram of the sensor oil filling device provided in this embodiment of the utility model;

[0027] Figure 3 A cross-sectional view of the sensor oil filling device provided in an embodiment of this utility model;

[0028] The labels for the attached figures are as follows:

[0029] 10. Sensor oil filling device; 110. Upper cylinder; 120. Upper top plate; 130. Upper base plate; 131. Injector; 132. Injector control valve; 140. Lower base plate; 141. Support plate bottom plate; 142. Material tray; 143. Air extraction hole; 144. First positioning pin; 145. Second positioning pin; 146. Second sealing ring; 150. Lower cylinder; 160. Lower base plate; 171. Lifting plate; 172. Second guide post; 173. First sealing ring; 180. First guide post. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] Please see Figures 1 to 3 , Figure 1 Exploded view of the sensor oil filling device provided in the embodiment of this utility model; Figure 2 A structural diagram of the sensor oil filling device provided in this embodiment of the utility model; Figure 3 A cross-sectional view of the sensor oil filling device provided in an embodiment of this utility model. (See figure) Figures 1 to 3 As shown, this utility model proposes a sensor oil filling device 10, which includes an upper cylinder 110, an upper top plate 120, an upper base plate 130, a lower base plate 140, a lower cylinder 150, a lower bottom plate 160, and a first guide post assembly. The first guide post assembly is disposed above the lower bottom plate 160, and passes through the lower base plate 140 and the upper base plate 130 in sequence before connecting to the upper top plate 120. The upper cylinder 110 is disposed above the upper top plate 120. Above, the first piston rod of the upper cylinder 110 passes through the upper top plate 120 and is connected to the upper base plate 130. The upper base plate 130 moves along the first guide post assembly under the drive of the upper cylinder 110. A first groove is provided on the side of the upper base plate 130 facing the lower base plate 140. A plurality of syringes 131 are provided in the first groove. A plurality of syringe control valves 132 are provided between the upper top plate 120 and the upper base plate 130. Each syringe 131 corresponds to a syringe control valve 132. The syringes 131 are filled with oil under the drive of the syringe control valves 132. A second groove is provided on the side of the lower base plate 140 facing the upper base plate 130. A tray bottom plate 141 and a material tray 142 are provided in the second groove. The material tray 142 is located above the tray bottom plate 141. A plurality of material receiving slots are provided on the material tray 142. Each material receiving slot corresponds to a syringe 131. When the upper base plate 130... When 30 is assembled on the lower base plate 140, the first groove and the second groove combine to form a cavity. The lower base plate 140 is provided with an air extraction hole 143 that communicates with the cavity. The air extraction hole 143 is connected to the air inlet of the vacuum pump through an air supply pipe. The lower cylinder 150 is disposed above the lower base plate 160. The lower cylinder 150 is connected to the support plate 141 through a lifting assembly. The support plate 141 moves upward or downward under the drive of the lower cylinder 150.

[0035] In this embodiment, the first guide post assembly is disposed above the lower base plate 160, and passes sequentially through the lower base plate 140 and the upper base plate 130 before connecting to the upper top plate 120; the upper cylinder 110 is disposed above the upper top plate 120, and the first piston rod of the upper cylinder 110 passes through the upper top plate 120 and is connected to the upper base plate 130 in a transmission manner; the upper base plate 130 moves along the first guide post assembly under the drive of the upper cylinder 110; a first groove is provided on one side of the upper base plate 130 facing the lower base plate 140, and a plurality of syringes 131 are disposed in the first groove; a plurality of syringe control valves 132 are disposed between the upper top plate 120 and the upper base plate 130, and the syringes 131 correspond one-to-one with the syringe control valves 132; the syringes 131 perform an oil filling operation under the drive of the syringe control valves 132; preferably, the injection... There are 6 injectors 131; the lower substrate 140 has a second groove on one side facing the upper substrate 130, and a tray 141 and a material tray 142 are disposed in the second groove. The material tray 142 is disposed above the tray base plate 141 and has several material slots for placing the parts to be filled with oil. Each material slot corresponds to one of the injectors 131; when the upper substrate 130 is assembled on the lower substrate 140, the first groove and the second groove combine to form a cavity. The lower substrate 140 has an air extraction hole 143 that communicates with the cavity. The air extraction hole 143 is connected to the air inlet of a vacuum pump through an air supply pipe; the lower cylinder 150 is disposed above the lower base plate 160. The lower cylinder 150 is connected to the tray base plate 141 through a lifting assembly. The tray base plate 141 moves upward or downward under the drive of the lower cylinder 150.

[0036] After the component to be filled (sensor core) is placed in the material tank, the upper base plate 130 is driven downward by the upper cylinder 110. When the upper base plate 130 is assembled on the lower base plate 140, the first groove and the second groove combine to form a cavity. A vacuum pump is used to evacuate the cavity to help expel the gas inside the component to be filled. Then, the lower cylinder 150 drives the tray base plate 141 to move upward, thereby driving the material tray 142 to move upward, so that the component to be filled is fully aligned with the syringe 131. Next, in a vacuum environment, the syringe control valve 132 controls the syringe 131 to fill the component to be filled with silicone oil, thereby filling the inside of the component to be filled with silicone oil and improving the filling effect. After the filling is completed, the upper base plate 130 is driven upward by the upper cylinder 110 to facilitate the removal of the product from the material tank.

[0037] In one embodiment, such as Figure 1As shown, the lifting assembly includes a lifting plate 171 and a second guide post assembly. One side of the lifting plate 171 is connected to the second piston rod of the lower cylinder 150, and the other side of the lifting plate 171 is connected to the second guide post assembly. The second guide post assembly consists of four second guide posts 172. The end of the second guide post that is not connected to the lifting plate passes through the lower base plate and is connected to the bottom plate of the support plate.

[0038] In this embodiment, one side of the lifting plate 171 is connected to the second piston rod of the lower cylinder 150, and the other side of the lifting plate 171 is connected to the second guide post assembly. The second guide post assembly consists of four second guide posts 172. The end of the second guide post that is not connected to the lifting plate passes through the lower base plate and connects to the bottom plate of the support plate. The lower cylinder 150 drives the lifting plate 171 to move up or down, thereby driving the second guide post assembly and the bottom plate of the support plate to move. In this embodiment of the present invention, the lower cylinder 150 can make the part to be filled with oil fully aligned with the syringe 131, avoiding the waste of silicone oil and preventing the part to be filled with oil from being contaminated by silicone oil.

[0039] In one embodiment, such as Figure 1 As shown, the lower base plate 140 is provided with a plurality of guide post holes, each of which corresponds one-to-one with the second guide post 172. The end of the second guide post 172 that is not connected to the lifting plate 171 passes through the guide post hole and connects to the support plate bottom plate 141. A first sealing ring 173 is provided on the outer side wall of the second guide post 172, and the first sealing ring 173 is disposed between the guide post hole and the second guide post 172.

[0040] In this embodiment, a first sealing ring 173 is provided on the outer wall of the second guide post 172. The first sealing ring 173 is disposed between the guide post hole and the second guide post 172 to achieve a sealing effect and ensure that the cavity is always in a vacuum environment after the cavity is evacuated.

[0041] In one embodiment, such as Figure 1 and Figure 2 As shown, the bottom plate 141 of the tray has a plurality of guide post grooves on one side facing the lower base plate 140, and the guide post grooves correspond one-to-one with the second guide post 172.

[0042] In this embodiment, a plurality of guide post grooves are provided on one side of the pallet base plate 141 facing the lower base plate 140. The guide post grooves correspond one-to-one with the second guide post 172. The placement position of the pallet base plate 141 can be positioned by setting the guide post grooves.

[0043] In one embodiment, such as Figure 1 and Figure 3As shown, the tray base plate 141 is provided with a plurality of first positioning pins 144, and the tray 142 is provided with a plurality of first positioning holes, with each first positioning pin 144 corresponding to a first positioning hole.

[0044] In this embodiment, the tray base plate 141 is provided with a plurality of first positioning pins 144, and the material tray 142 is provided with a plurality of first positioning holes. The first positioning pins 144 correspond one-to-one with the first positioning holes. The placement position of the material tray 142 can be positioned by setting the first positioning pins 144, thereby ensuring that the oil-filled part placed in the material tank always corresponds to the syringe, and improving the reliability of the sensor oil filling device 10.

[0045] In one embodiment, such as Figure 1 and Figure 3 As shown, a plurality of second positioning pins 145 are provided on one side of the lower substrate 140 facing the upper substrate 130, and a plurality of second positioning holes are provided on one side of the upper substrate 130 facing the lower substrate 140, with each second positioning pin 145 corresponding to a second positioning hole.

[0046] In this embodiment, a plurality of second positioning pins 145 are provided on one side of the lower substrate 140 facing the upper substrate 130, and a plurality of second positioning holes are provided on one side of the upper substrate 130 facing the lower substrate 140. The second positioning pins 145 correspond one-to-one with the second positioning holes, and the upper substrate 130 can be assembled onto the lower substrate 140 through the second positioning pins 145.

[0047] In one embodiment, such as Figure 1 As shown, a second sealing ring 146 is provided on one side of the lower substrate 140 facing the upper substrate 130, and the second sealing ring 146 is disposed on the outer periphery of the second groove.

[0048] In this embodiment, a second sealing ring 146 is provided on one side of the lower substrate 140 facing the upper substrate 130. The second sealing ring 146 is disposed on the outer periphery of the second groove. When the upper substrate 130 is assembled on the lower substrate 140, the deformation of the second sealing ring 146 is easy to occur, effectively ensuring the sealing effect of the cavity.

[0049] In one embodiment, such as Figure 1 As shown, each of the syringes 131 has an oil injection nozzle at one end facing the lower substrate 140, and the oil injection nozzle is made of soft rubber.

[0050] In this embodiment, when the upper substrate 130 is assembled on the lower substrate 140, the first groove and the second groove combine to form a cavity. A vacuum pump is used to evacuate the cavity to help expel the gas inside the part to be filled with oil. Then, the lower cylinder 150 drives the tray base plate 141 to move upward, thereby driving the material tray 142 to move upward, so that the part to be filled with oil is fully aligned with the oil injection nozzle. Then, in a vacuum environment, the syringe control valve 132 controls the syringe 131 to fill the part to be filled with oil. The silicone oil fills the inside of the part to be filled with oil through the oil injection nozzle, improving the filling effect.

[0051] In one embodiment, such as Figure 1 As shown, the first guide post assembly consists of four first guide posts 180, which are respectively disposed at the four top corners of the lower base plate 160. The first guide post 180 has a cylindrical structure.

[0052] In this embodiment, the first guide post assembly consists of four first guide posts 180. The first guide posts 180 are respectively disposed at the four top corners of the lower base plate 160. The first guide posts 180 are cylindrical structures. The first guide posts 180 pass through the lower base plate 140 and the upper base plate 130 in sequence and are connected to the upper top plate 120.

[0053] In one embodiment, such as Figure 1 As shown, the upper cylinder 110 is fixedly connected to the upper top plate 120 by a number of first screws, and the lower cylinder 150 is fixedly connected to the lower bottom plate 160 by a number of second screws.

[0054] In this embodiment, the upper cylinder 110 is fixedly connected to the upper top plate 120 by a plurality of first screws, and the lower cylinder 150 is fixedly connected to the lower bottom plate 160 by a plurality of second screws; preferably, the first screws and the second screws are both hexagonal socket head cap screws.

[0055] This utility model discloses a sensor oil filling device, which includes an upper cylinder, an upper top plate, an upper base plate, a lower base plate, a lower cylinder, a lower bottom plate, and a first guide post assembly. The first guide post assembly is disposed above the lower bottom plate and passes through the lower base plate and the upper base plate in sequence before connecting to the upper top plate. The upper cylinder is disposed above the upper top plate, and the first piston rod of the upper cylinder passes through the upper top plate and is drively connected to the upper base plate. The upper base plate moves along the first guide post assembly under the drive of the upper cylinder. A first groove is provided on one side of the upper base plate facing the lower base plate, and a plurality of syringes are disposed in the first groove. A plurality of syringe control valves are disposed between the upper top plate and the upper base plate. The control valves are configured one-to-one, and the syringe is filled with oil under the drive of the syringe control valve. A second groove is provided on one side of the lower base plate facing the upper base plate. A support plate and a material tray are provided in the second groove. The material tray is located above the support plate and has several material slots, each corresponding to a syringe. When the upper base plate is assembled on the lower base plate, the first groove and the second groove combine to form a cavity. An air extraction hole is provided on the lower base plate and communicates with the cavity. The air extraction hole is connected to the air inlet of a vacuum pump through an air supply pipe. A lower cylinder is located above the lower base plate and is driven by a lifting assembly to the support plate. The support plate moves up or down under the drive of the lower cylinder. In this embodiment of the utility model, the tray is used to place the part to be filled with oil. When the upper substrate is assembled on the lower substrate, the first groove and the second groove combine to form a cavity. The cavity is evacuated to help expel the gas inside the part to be filled with oil. Then, the part to be filled with oil is filled in the vacuum environment so that the silicone oil fills the inside of the part to be filled with oil, thereby improving the filling effect.

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sensor oil filling device characterized by, The sensor oil filling device includes an upper cylinder, an upper top plate, an upper base plate, a lower base plate, a lower cylinder, a lower bottom plate, and a first guide post assembly; The first guide post assembly is disposed above the lower base plate, and the first guide post assembly passes through the lower base plate and the upper base plate in sequence and is connected to the upper top plate; The upper cylinder is disposed above the upper top plate. The first piston rod of the upper cylinder passes through the upper top plate and is connected to the upper base plate in a transmission manner. The upper base plate moves along the first guide post assembly under the drive of the upper cylinder. A first groove is provided on one side of the upper substrate facing the lower substrate. A plurality of syringes are provided in the first groove. A plurality of syringe control valves are provided between the upper top plate and the upper substrate. Each syringe corresponds to a syringe control valve. The syringes are filled with oil under the drive of the syringe control valves. A second groove is provided on one side of the lower substrate facing the upper substrate. A support plate and a material tray are provided in the second groove. The material tray is located above the support plate and has a plurality of material receiving slots, each corresponding to a syringe. When the upper substrate is assembled on the lower substrate, the first groove and the second groove combine to form a cavity. The lower substrate is provided with an air extraction hole that communicates with the cavity. The air extraction hole is connected to the air inlet of the vacuum pump through an air supply pipe. The lower cylinder is located above the lower base plate. The lower cylinder is connected to the pallet base plate via a lifting assembly. The pallet base plate moves up or down under the drive of the lower cylinder.

2. The sensor oil-filling device according to claim 1, characterized by The lifting assembly includes a lifting plate and a second guide column assembly. One side of the lifting plate is connected to the second piston rod of the lower cylinder, and the other side of the lifting plate is connected to the second guide column assembly. The second guide post assembly consists of four second guide posts. The end of the second guide post that is not connected to the lifting plate passes through the lower base plate and connects to the bottom plate of the support plate.

3. The sensor oil filling device according to claim 2, characterized in that, The lower base plate is provided with a plurality of guide post holes, each of which corresponds one-to-one with the second guide post. The end of the second guide post that is not connected to the lifting plate passes through the guide post hole and connects to the bottom plate of the support plate. The outer wall of the second guide post is provided with a first sealing ring, which is disposed between the guide post hole and the second guide post.

4. The sensor oil filling device according to claim 2, characterized in that, The bottom plate of the tray has a plurality of guide post grooves on one side facing the lower substrate, and the guide post grooves correspond one-to-one with the second guide post.

5. The sensor oil filling device according to claim 1, characterized in that, The pallet base plate is provided with a plurality of first positioning pins, and the tray is provided with a plurality of first positioning holes, with each first positioning pin corresponding to a first positioning hole.

6. The sensor oil filling device according to claim 1, characterized in that, The lower substrate has a plurality of second positioning pins on one side facing the upper substrate, and the upper substrate has a plurality of second positioning holes on one side facing the lower substrate, with each second positioning pin corresponding to a second positioning hole.

7. The sensor oil filling device according to claim 1, characterized in that, A second sealing ring is provided on one side of the lower substrate facing the upper substrate, and the second sealing ring is disposed on the outer periphery of the second groove.

8. The sensor oil filling device according to claim 1, characterized in that, Each syringe has an oil injection nozzle at one end facing the lower substrate, and the oil injection nozzle is made of soft rubber.

9. The sensor oil filling device according to claim 1, characterized in that, The first guide post assembly consists of four first guide posts, which are respectively located at the four top corners of the lower base plate. The first guide posts are cylindrical structures.

10. The sensor oil filling device according to claim 1, characterized in that, The upper cylinder is fixedly connected to the upper top plate by a number of first screws, and the lower cylinder is fixedly connected to the lower bottom plate by a number of second screws.

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