An automotive shock absorber oil injection device

Abstract

This utility model relates to the field of automotive shock absorber manufacturing technology, and discloses an automotive shock absorber oil injection device, including a frame and a positioning frame mounted on the frame. The positioning frame is used to mount and position the automotive shock absorber to be injected with oil. The automotive shock absorber has an inner cylinder oil chamber and an outer cylinder oil chamber. The upper end of the inner cylinder oil chamber has a first upper opening, and the upper end of the outer cylinder oil chamber has a second upper opening. The frame is equipped with a mounting bracket assembly and a first driving part for driving the mounting bracket assembly to slide vertically. The mounting bracket assembly is equipped with a first oil injection needle and a second oil injection needle. The first oil injection needle is positioned above the inner cylinder oil chamber, and the second oil injection needle is positioned above the outer cylinder oil chamber. This utility model drives the mounting bracket assembly through the first driving part to drive the first and second oil injection needles to move down precisely and synchronously, which can automatically complete the oil injection operation of the inner and outer cylinder oil chambers of the shock absorber in one go, reducing labor costs and improving the accuracy, consistency and production efficiency of the oil injection position.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock absorber manufacturing technology, and more specifically, to an automotive shock absorber oil injection device. Background Technology

[0002] The shock absorber is a core component of a vehicle's suspension system. Its main functions are to suppress the oscillations caused by the springs absorbing shocks and to absorb impact energy from the road surface. The performance of the shock absorber directly depends on the amount of oil injected, the precision of the injection, and the sealing of the internal fluid. Too much oil will lead to excessive internal pressure, affecting piston rod movement and even causing oil seal failure; too little oil will not provide sufficient damping force, resulting in a decline in shock absorber performance. Therefore, the oil injection process is a critical step in the manufacturing process of shock absorbers.

[0003] Existing automotive shock absorber lubrication equipment has a low degree of automation. For example, it requires manual placement and removal of the shock absorber cylinder, manual lubrication of the inner and outer cylinders, and visual observation of the oil level. This not only increases labor intensity and labor costs, but also leads to inconsistent lubrication volume and large fluctuations in product quality due to the uncontrollability of manual operation, making it difficult to achieve accurate quality traceability and management.

[0004] Furthermore, after the grease fitting has finished filling and been removed, the residual oil inside will drip onto the equipment, workpieces, and even the ground due to gravity and siphon effect. This not only wastes hydraulic oil and increases production costs, but more seriously, it pollutes the working environment. Utility Model Content

[0005] To address at least one of the aforementioned problems, this utility model provides an automotive shock absorber oil injection device, comprising a frame and a positioning frame mounted on the frame. The positioning frame is used to mount and position the automotive shock absorber to be injected with oil. The automotive shock absorber is provided with an inner cylinder oil chamber and an outer cylinder oil chamber. The upper end of the inner cylinder oil chamber is provided with a first upper opening, and the upper end of the outer cylinder oil chamber is provided with a second upper opening. The frame is provided with a mounting frame assembly and a first driving part for driving the mounting frame assembly to slide vertically. The mounting frame assembly is provided with a first oil injection needle tube and a second oil injection needle tube. The first oil injection needle tube is positioned above the inner cylinder oil chamber, and the second oil injection needle tube is positioned above the outer cylinder oil chamber.

[0006] During oil injection, the first drive unit moves the mounting bracket assembly downwards, and the mounting bracket assembly moves the first and second oil injection needles downwards synchronously, so that the first oil injection needle is inserted downwards into the first upper opening and injects oil into the inner cylinder oil cavity, while the second oil injection needle is inserted downwards into the second upper opening and injects oil into the outer cylinder oil cavity. This utility model drives the mounting bracket assembly through the first drive unit to move the first and second oil injection needles downwards precisely and synchronously, which can automatically complete the oil injection operation of the inner and outer cylinder oil cavities of the shock absorber in one go, reducing labor costs and improving the accuracy, consistency and production efficiency of the oil injection position.

[0007] Optionally, the mounting bracket assembly includes a first sliding bracket and two symmetrically arranged second sliding brackets. The first driving part is connected to the first sliding bracket and drives the first sliding bracket to slide vertically. The first sliding bracket is provided with a second driving part, which is used to drive the second sliding bracket to slide horizontally relative to the first sliding bracket. The first oil injection needle tube is fixedly connected to one of the second sliding brackets, and the second oil injection needle tube is fixedly connected to the other second sliding bracket.

[0008] Optionally, the first sliding frame is provided with a slide rail extending in a horizontal direction, and the bottom of the second sliding frame is provided with a slider that slides in cooperation with the slide rail.

[0009] Optionally, the first driving unit is an electric servo slide, the second driving unit is a first cylinder, the sliding output end of the electric servo slide is fixedly connected to the first sliding frame, and the telescopic output end of the first cylinder is fixedly connected to the second sliding frame.

[0010] Optionally, the first cylinder is provided with a first magnetic switch and a second magnetic switch for detecting its own output stroke, and the first cylinder is provided with a telescopic rod, on which a magnetic block is provided.

[0011] Optionally, one end of the first oil injection needle tube is provided with a first inclined tube, and the first inclined tube is provided with a first vertical cut surface for abutting against the inner wall of the inner cylinder oil cavity; one end of the second oil injection needle tube is provided with a second inclined tube, and the second inclined tube is provided with a second vertical cut surface for abutting against the inner wall of the outer cylinder oil cavity.

[0012] Optionally, the mounting bracket assembly is provided with an oil receiving box and a third driving part for driving the oil receiving box; after the oil is injected, the first driving part drives the mounting bracket assembly to move upward, the mounting bracket assembly drives the first oil injection needle and the second oil injection needle to move upward synchronously, and the third driving part drives the oil receiving box to move below the first oil injection needle and the second oil injection needle to catch the oil dripping from the first oil injection needle and the second oil injection needle.

[0013] Optionally, the third driving unit is a second cylinder, and a connecting frame is connected between the output end of the second cylinder and the oil receiving box. The second cylinder is used to drive the connecting frame and the oil receiving box to move horizontally.

[0014] Optionally, the automotive shock absorber oil injection device further includes an oil supply unit, which includes several oil storage tanks containing different oils. The oil storage tanks are connected to the first oil injection needle and the second oil injection needle by oil pipelines. A solenoid valve is installed on the oil pipelines to switch the oil storage tanks to which the oil is supplied to the first oil injection needle and the second oil injection needle. An oil receiving box is connected to the oil storage tanks by a return oil pipeline, and an oil pump is installed on the return oil pipeline to draw the oil from the oil receiving box into the oil storage tanks.

[0015] Optionally, the positioning frame is provided with a positioning fixture, and the lower part of the vehicle shock absorber is detachably inserted into the positioning fixture. The frame is provided with a through-beam laser sensor for detecting the vehicle shock absorber. The through-beam laser sensor includes a cooperating laser emitter and a laser receiver. When the vehicle shock absorber is inserted into the positioning fixture for positioning, the vehicle shock absorber is placed on the laser path between the laser emitter and the laser receiver.

[0016] Compared with the prior art, the automotive shock absorber oil injection equipment of this utility model drives the mounting bracket assembly through the first drive unit to drive the first oil injection needle and the second oil injection needle to move down precisely and synchronously. It can automatically complete the oil injection operation of the inner and outer cylinder oil chambers of the shock absorber in one go, reduce labor costs, and improve the accuracy, consistency and production efficiency of the oil injection position. Attached Figure Description

[0017] Figure 1 This is a perspective view of the automotive shock absorber oil injection device of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the automotive shock absorber oil injection device of this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of section A;

[0020] Figure 4 for Figure 2 Enlarged view of section B;

[0021] Figure 5 This is a schematic diagram of the structure of the automotive shock absorber oil injection device of this utility model;

[0022] Figure 6This is a schematic diagram of the first vertical section of the automotive shock absorber oil injection device of this utility model;

[0023] Figure 7 This is a schematic diagram of the mounting bracket assembly for the automotive shock absorber oil injection device of this utility model;

[0024] Figure 8 This is a schematic diagram of the first cylinder part of the automotive shock absorber oil injection device of this utility model.

[0025] The component names corresponding to the various labels in the figure are as follows: 1 is the frame, 2 is the mounting bracket assembly, 21 is the first sliding frame, 211 is the slide rail, 22 is the second sliding frame, 221 is the slider, 3 is the automotive shock absorber, 301 is the inner cylinder oil filling chamber, 302 is the outer cylinder oil filling chamber, 31 is the first oil filling needle tube, 312 is the first inclined tube, 313 is the first vertical section, 32 is the second oil filling needle tube, 322 is the second inclined tube, 323 is the second vertical section, 41 is the electric servo slide, 42 is the first cylinder, 421 is the first magnetic switch, 422 is the second magnetic switch, 423 is the magnetic block, 43 is the second cylinder, 5 is the oil receiving box, 6 is the connecting frame, 7 is the positioning frame, 71 is the positioning fixture, 72 is the laser emitter, 73 is the laser receiver, and 8 is the oil storage tank. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0029] See Figures 1-8This utility model provides an automotive shock absorber oil injection device, including a frame 1 and a positioning frame 7 disposed on the frame 1. The positioning frame 7 is used to install and position the automotive shock absorber 3 to be injected with oil. The automotive shock absorber 3 is provided with an inner cylinder oil chamber 301 and an outer cylinder oil chamber 302. The upper end of the inner cylinder oil chamber 301 is provided with a first upper opening, and the upper end of the outer cylinder oil chamber 302 is provided with a second upper opening. The frame 1 is provided with a mounting frame assembly 2 and a first driving part for driving the mounting frame assembly 2 to slide vertically. The mounting frame assembly 2 is provided with a first oil injection needle tube 31 and a second oil injection needle tube 32. The first oil injection needle tube 31 is placed above the inner cylinder oil chamber 301, and the second oil injection needle tube 32 is placed above the outer cylinder oil chamber 302.

[0030] During oil injection, the first drive unit moves the mounting bracket assembly 2 downwards, and the mounting bracket assembly 2 moves the first oil injection needle tube 31 and the second oil injection needle tube 32 downwards simultaneously, so that the first oil injection needle tube 31 is inserted downwards into the first upper opening and injects oil into the inner cylinder oil cavity 301, while the second oil injection needle tube 32 is inserted downwards into the second upper opening and injects oil into the outer cylinder oil cavity 302. This utility model drives the mounting bracket assembly through the first drive unit to move the first and second oil injection needle tubes downwards precisely and synchronously, which can automatically complete the oil injection operation of the inner and outer cylinder oil cavities of the shock absorber in one go, reducing labor costs and improving the accuracy, consistency and production efficiency of the oil injection position; in this embodiment.

[0031] See Figures 1-3 The mounting bracket assembly 2 includes a first sliding bracket 21 and two symmetrically arranged second sliding brackets 22. A first driving unit is connected to the first sliding bracket 21 and drives the first sliding bracket 21 to slide vertically. A second driving unit is provided on the first sliding bracket 21. The second driving unit is used to drive the second sliding bracket 22 to slide horizontally relative to the first sliding bracket 21. A first oil injection needle tube 31 is fixedly connected to one of the second sliding brackets 22, and a second oil injection needle tube 32 is fixedly connected to the other second sliding bracket 22. When injecting oil, the first driving unit first drives the mounting bracket assembly 2 to move downward as a whole, so that the first oil injection needle tube 31 and the second oil injection needle tube 32 are inserted into the corresponding oil chambers. Then, the second driving unit drives the two second sliding brackets 22 to move horizontally in opposite directions, so that the first oil injection needle tube 31 and the second oil injection needle tube 32 open and come close to the inner wall of their respective oil chambers, so that the oil can flow in along the inner wall. Flowing in along the wall can reduce the generation of air bubbles and improve the stability of oil injection.

[0032] See Figure 3 and Figure 7The first sliding frame 21 is provided with a slide rail 211 extending horizontally, and the bottom of the second sliding frame 22 is provided with a slider 221 that slides in cooperation with the slide rail 211, making the sliding of the second sliding frame 22 more stable. The first driving unit is an electric servo slide table 41, and the second driving unit is a first cylinder 42. The sliding output end of the electric servo slide table 41 is fixedly connected to the first sliding frame 21, and the telescopic output end of the first cylinder 42 is fixedly connected to the second sliding frame 22. The electric servo slide table 41 can provide precise and controllable vertical main motion. The servo motor has high control accuracy and can be programmed to precisely control the stop position of the slide table in order to control the insertion depth of the oil injection needle and ensure the stable operation of the oil injection work.

[0033] See Figure 2 , Figure 3 , Figure 7 and Figure 8 The first cylinder 42 is equipped with a first magnetic switch 421 and a second magnetic switch 422 for detecting its own output stroke. The first cylinder 42 is equipped with a telescopic rod, and a magnetic block 423 is installed on the telescopic rod. The two magnetic switches are respectively installed at two preset positions on the outer wall of the cylinder body to detect whether the stroke of the cylinder telescopic rod has reached the preset position, thereby improving the control accuracy of the horizontal displacement of the first oil injection needle tube 31 and the second oil injection needle tube 32.

[0034] See Figure 5 and Figure 6 The first oil injection needle tube 31 has a first inclined tube 312 at one end, and the first inclined tube 312 has a first vertical cut surface 313 for abutting against the inner wall of the inner cylinder oil cavity 301, so that the outlet of the first oil injection needle tube 31 can be well close to the inner wall of the inner cylinder oil cavity 301; the second oil injection needle tube 32 has a second inclined tube 322 at one end, and the second inclined tube 322 has a second vertical cut surface 323 for abutting against the inner wall of the outer cylinder oil cavity 302, so that the outlet of the second oil injection needle tube 32 can be well close to the inner wall of the outer cylinder oil cavity 302. The whole oil injection process is gentler and quieter, allowing the oil to flow down the wall slowly and better, avoiding the oil flow from a high place to vertically impact the oil already injected at the bottom, thereby reducing the entrainment of air and the generation of bubbles.

[0035] See Figure 2 , Figure 3 and Figure 7The mounting bracket assembly 2 is equipped with an oil receiving box 5 and a third drive unit for driving the oil receiving box 5. After oil filling is completed, the first drive unit drives the mounting bracket assembly 2 to move upward, and the mounting bracket assembly 2 drives the first oil injection needle tube 31 and the second oil injection needle tube 32 to move upward simultaneously. The third drive unit drives the oil receiving box 5 to move below the first oil injection needle tube 31 and the second oil injection needle tube 32 to catch the oil dripping from the first oil injection needle tube 31 and the second oil injection needle tube 32. After oil collection is completed, the third drive unit drives the oil receiving box 5 to move back to the standby position, and the equipment starts the next working cycle, collecting the oil. The hydraulic fluid can be recycled and reused, reducing hydraulic oil consumption; at the same time, it avoids oil dripping onto the product or frame, causing oil pollution problems; the third drive unit is the second cylinder 43, and the output end of the second cylinder 43 is connected to the oil receiving box 5 by a connecting frame 6. The second cylinder 43 is used to drive the connecting frame 6 and the oil receiving box 5 to move horizontally; the second cylinder 43 drives the oil receiving box 5, and the cylinder moves at a relatively fast speed, which can meet the requirements of the production cycle. It moves quickly into place in a short time after the needle is lifted, so that the dripping oil can be caught in time. The structure is simple and reliable.

[0036] See Figure 1 and Figure 2 The automotive shock absorber oil injection equipment also includes an oil supply unit, which includes several oil storage tanks 8 containing different oils. In this embodiment, three oil storage tanks 8 are provided. The oil storage tanks 8 are connected to the first oil injection needle tube 31 and the second oil injection needle tube 32 by oil pipelines. Solenoid valves are provided on the oil pipelines. The solenoid valves are used to switch the oil storage tanks 8 that supply oil to the first oil injection needle tube 31 and the second oil injection needle tube 32. Different types of oil can be changed according to processing requirements, making the processing more flexible. The oil receiving box 5 is connected to the oil storage tanks 8 by a return oil pipeline. An oil pump is provided on the return oil pipeline to draw the oil in the oil receiving box 5 into the oil storage tank 8. It can automatically recover the dripping oil, which has a high degree of automation and saves oil.

[0037] See Figures 2-4The positioning frame 7 is equipped with a positioning fixture 71. The lower part of the car shock absorber 3 is detachably inserted into the positioning fixture 71. The frame 1 is equipped with a through-beam laser sensor for detecting the car shock absorber 3. The through-beam laser sensor includes a matching laser emitter 72 and a laser receiver 73. When the car shock absorber 3 is inserted into the positioning fixture 71 for positioning, the car shock absorber 3 is placed on the laser path between the laser emitter 72 and the laser receiver 73. After the through-beam laser sensor detects that the car shock absorber 3 is correctly positioned on the positioning fixture 71, the equipment starts the oil injection process: the first drive unit drives the first oil injection needle tube 31 and the second oil injection needle tube 32 to move down and insert into the corresponding oil chambers. Then, the second drive unit drives the first oil injection needle tube 31 and the second oil injection needle tube 32 to open, so that the first oil injection needle tube 31 and the second oil injection needle tube 32 are close to the inner wall of their respective oil chambers. The needle 32 begins oil injection. After oil injection is completed, the first drive unit moves the first oil injection needle 31 and the second oil injection needle 32 upwards, and the third drive unit moves the oil receiving box to a position directly below the first oil injection needle 31 and the second oil injection needle 32 to receive oil. The second drive unit moves the first oil injection needle 31 and the second oil injection needle 32 together, ready for the next work cycle. The through-beam laser sensor can detect whether the car shock absorber 3 is accurately positioned on the positioning fixture 71 to ensure the accuracy of subsequent oil injection processes and the reliability of oil injection. After oil injection is completed, the positioning fixture 71 and the car shock absorber 3 installed on it are removed manually or by conveyor belt to the next process position. The new positioning fixture 71 for the car shock absorber 3 to be injected is moved in manually or by conveyor belt again. When the through-beam laser sensor detects the car shock absorber 3 to be injected again, the oil injection process is automatically started, with a high degree of automation.

[0038] The automotive shock absorber oil injection device of this utility model drives the mounting bracket assembly through the first drive unit to drive the first oil injection needle and the second oil injection needle to move down precisely and synchronously. It can automatically complete the oil injection operation of the inner and outer cylinder oil chambers of the shock absorber in one go, reduce labor costs, and improve the accuracy, consistency and production efficiency of the oil injection position.

[0039] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0040] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0042] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0043] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An oil injection device for automotive shock absorbers, characterized in that, The system includes a frame (1) and a positioning frame (7) mounted on the frame (1). The positioning frame (7) is used to mount and position a car shock absorber (3) to be injected with oil. The car shock absorber (3) is provided with an inner cylinder oil chamber (301) and an outer cylinder oil chamber (302). The upper end of the inner cylinder oil chamber (301) is provided with a first upper opening, and the upper end of the outer cylinder oil chamber (302) is provided with a second upper opening. The frame (1) is provided with a mounting frame assembly (2) and a first driving part for driving the mounting frame assembly (2) to slide vertically. The mounting frame assembly (2) is provided with a first oil injection needle tube (31) and a second oil injection needle tube (32). The first oil injection needle tube (31) is placed above the inner cylinder oil chamber (301), and the second oil injection needle tube (32) is placed above the outer cylinder oil chamber (302). During oil injection, the first drive unit drives the mounting bracket assembly (2) to move downward, and the mounting bracket assembly (2) drives the first oil injection needle tube (31) and the second oil injection needle tube (32) to move downward simultaneously, so that the first oil injection needle tube (31) is inserted downward into the first upper opening and injects oil into the inner cylinder oil cavity (301), while the second oil injection needle tube (32) is inserted downward into the second upper opening and injects oil into the outer cylinder oil cavity (302).

2. The automotive shock absorber oil injection device according to claim 1, characterized in that, The mounting bracket assembly (2) includes a first sliding bracket (21) and two symmetrically arranged second sliding brackets (22). The first driving part is connected to the first sliding bracket (21) and drives the first sliding bracket (21) to slide vertically. The first sliding bracket (21) is provided with a second driving part, which is used to drive the second sliding bracket (22) to slide horizontally relative to the first sliding bracket (21). The first oil injection needle tube (31) is fixedly connected to one of the second sliding brackets (22), and the second oil injection needle tube (32) is fixedly connected to the other second sliding bracket (22).

3. The automotive shock absorber oil injection device according to claim 2, characterized in that, The first sliding frame (21) is provided with a slide rail (211) extending in the horizontal direction, and the bottom of the second sliding frame (22) is provided with a slider (221) that slides in cooperation with the slide rail (211).

4. The automotive shock absorber oil injection device according to claim 2, characterized in that, The first driving unit is an electric servo slide (41), and the second driving unit is a first cylinder (42). The sliding output end of the electric servo slide (41) is fixedly connected to the first sliding frame (21), and the telescopic output end of the first cylinder (42) is fixedly connected to the second sliding frame (22).

5. The automotive shock absorber oil injection device according to claim 4, characterized in that, The first cylinder (42) is provided with a first magnetic switch (421) and a second magnetic switch (422) for detecting its own output stroke. The first cylinder (42) is provided with a telescopic rod, and a magnetic block (423) is provided on the telescopic rod.

6. The automotive shock absorber oil injection device according to claim 1, characterized in that, The first oil injection needle tube (31) is provided with a first inclined tube (312) at one end, and the first inclined tube (312) is provided with a first vertical cut surface (313) for abutting against the inner wall of the inner cylinder oil cavity (301); the second oil injection needle tube (32) is provided with a second inclined tube (322) at one end, and the second inclined tube (322) is provided with a second vertical cut surface (323) for abutting against the inner wall of the outer cylinder oil cavity (302).

7. The automotive shock absorber oil injection device according to claim 1, characterized in that, The mounting bracket assembly (2) is provided with an oil receiving box (5) and a third driving part for driving the oil receiving box (5); after the oil is injected, the first driving part drives the mounting bracket assembly (2) to move upward, the mounting bracket assembly (2) drives the first oil injection needle tube (31) and the second oil injection needle tube (32) to move upward synchronously, and the third driving part drives the oil receiving box (5) to move below the first oil injection needle tube (31) and the second oil injection needle tube (32) to catch the oil dripping from the first oil injection needle tube (31) and the second oil injection needle tube (32).

8. The automotive shock absorber oil injection device according to claim 7, characterized in that, The third driving unit is a second cylinder (43). A connecting frame (6) is connected between the output end of the second cylinder (43) and the oil receiving box (5). The second cylinder (43) is used to drive the connecting frame (6) and the oil receiving box (5) to move in the horizontal direction.

9. The automotive shock absorber oil injection device according to claim 7, characterized in that, It also includes an oil supply unit, which includes several oil storage tanks (8) containing different oils. The oil storage tanks (8) are connected to the first oil injection needle tube (31) and the second oil injection needle tube (32) by oil pipelines. The oil pipelines are equipped with solenoid valves, which are used to switch the oil storage tanks (8) that supply oil to the first oil injection needle tube (31) and the second oil injection needle tube (32). The oil receiving box (5) is connected to the oil storage tanks (8) by a return oil pipeline. The return oil pipeline is equipped with an oil pump for drawing the oil in the oil receiving box (5) into the oil storage tanks (8).

10. The automotive shock absorber oil injection device according to any one of claims 1-9, characterized in that, The positioning frame (7) is provided with a positioning fixture (71). The lower part of the car shock absorber (3) is detachably inserted into the positioning fixture (71). The frame (1) is provided with a through-beam laser sensor for detecting the car shock absorber (3). The through-beam laser sensor includes a matching laser emitter (72) and a laser receiver (73). When the car shock absorber (3) is inserted into the positioning fixture (71) for positioning, the car shock absorber (3) is placed on the laser path between the laser emitter (72) and the laser receiver (73).

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