Hydraulic shock absorber fluid pressure seal charging fixture

Abstract

The utility model discloses a hydraulic shock absorber liquid filling - pressure seal fixture, including the base for supporting the shock absorber body, and the base is installed with: the positioning pin, the rear side fixed position board on the base upper end, and the positioning pin is fixed on the position board, and cooperates with the mounting hole of shock absorber body rear end portion, the compression assembly, including the drive part and two respectively used in the L type compression block of compressing in shock absorber body both sides front end, the laser centering instrument passes through emitting cross laser, real -time detection shock absorber body upper end liquid filling hole offset, controller, with drive part and laser centering instrument communicatably connected. Thus, positioning pin (rough positioning) + laser centering instrument (fine positioning), cooperate and compress the compression assembly compression, guarantee the accuracy and consistency of damping liquid filling position, promote shock absorber product quality, and through the automatic control of controller, when liquid filling and pressure seal, do not need manual frequent adjustment and intervention, save a lot of time and manpower cost, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing equipment technology, and in particular to a hydraulic shock absorber filling-pressing clamp. Background Technology

[0002] As a core component of the automotive suspension system, the hydraulic shock absorber plays a crucial role in the ride comfort and handling stability of the vehicle. Its working principle is to absorb road impact energy using hydraulic damping, suppressing the repetitive vibration of the spring. In the manufacturing process of the hydraulic shock absorber, accurately filling it with damping fluid and reliably sealing the filling hole with sealing steel balls are important steps to ensure its stable performance (e.g., Figure 1 (As shown).

[0003] Currently, traditional clamping fixtures have shortcomings in terms of positioning accuracy, ease of operation, and production efficiency. Some fixtures are not precise enough in positioning, resulting in inaccurate damping fluid filling and affecting the performance of the shock absorber; some fixtures cannot efficiently complete the sealing operation of the sealing steel balls after filling, and are difficult to adapt to the needs of mass production, requiring frequent manual adjustments and interventions, which consumes a lot of time and labor costs. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a hydraulic shock absorber filling-pressure sealing fixture.

[0005] This utility model proposes a hydraulic shock absorber filling-sealing clamp, including a base for supporting the shock absorber body, on which the following are mounted:

[0006] The positioning pin is fixed to the positioning plate on the upper rear side of the base, and the positioning pin is fixed to the positioning plate and cooperates with the mounting hole at the rear end of the shock absorber body. The number and position of the positioning pin are determined according to the shape of the shock absorber body and the position of the mounting hole.

[0007] The clamping assembly includes a driving component and two L-shaped clamping blocks located on both sides of the shock absorber body. The driving component can drive the two L-shaped clamping blocks to rotate simultaneously toward the shock absorber body, so that the bottoms of the two L-shaped clamping blocks press against the front ends of both sides of the shock absorber body.

[0008] The laser alignment instrument emits a cross laser and detects the offset of the liquid filling hole at the top of the shock absorber body in real time.

[0009] The controller is communicatively connected to the drive unit and the laser alignment instrument.

[0010] Preferably, the driving component is a cylinder, and the positioning plate has U-shaped blocks with outward openings at the rear of both ends. The two ends of the positioning plate are provided with recesses at corresponding positions of the U-shaped blocks. The U-shaped blocks include two sides and a connecting part to form a U-shaped structure. The first rotation point of the side of the L-shaped pressing block is rotatably connected between the two sides of the U-shaped block through a rotating rod I, and the second rotation point is rotatably connected in the recess of the positioning plate through a rotating rod II. One end of the output rod of the cylinder is fixed to the connecting part of one of the U-shaped blocks, and the other end is fixed to the connecting part of the other U-shaped block.

[0011] Preferably, the bottom of the L-shaped clamping block extends with a contour block that matches the outer contour of the shock absorber body in contact with it.

[0012] Preferably, an elastic positioning auxiliary block is provided around the positioning pin, so that when the shock absorber body is placed on the base, the elastic positioning auxiliary block can adaptively fit the outer surface of the shock absorber body.

[0013] Preferably, the elastic positioning auxiliary block is made of rubber, polyurethane, or other elastic materials.

[0014] Preferably, the locating pin is made of wear-resistant alloy steel and its surface has been hardened.

[0015] In summary, this utility model has the following beneficial effects: First, the shock absorber body is coarsely positioned using a positioning pin, then precisely positioned using a laser alignment instrument, and finally pressed and fixed by a clamping assembly. The positioning accuracy can reach within ±0.1mm, effectively ensuring the accuracy and consistency of the damping fluid filling position and improving the product quality of the shock absorber. Furthermore, it has a compact structure, is easy to operate, and has precise positioning. Through automated control, the filling and sealing processes do not require frequent manual adjustments and interventions, saving significant time and labor costs and improving work efficiency.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the shock absorber body.

[0018] Figure 2 The three-dimensional hydraulic shock absorber filling-pressing clamp of this utility model embodiment Figure 1 .

[0019] In the picture:

[0020] 1. Shock absorber body; 11. Filling hole; 12. Sealing steel ball; 2. Base; 3. Positioning plate; 31. Notch; 4. Positioning pin; 5. U-shaped block; 6. Rotating rod I; 7. Rotating rod II; 8. Cylinder; 81. Output rod; 9. L-shaped clamping block; 91. Contouring block. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] like Figure 2 As shown, the hydraulic shock absorber filling-sealing fixture proposed in this embodiment includes a base 2 for supporting the shock absorber body 1, on which the following are mounted:

[0023] Positioning pin 4, positioning plate 3 is fixed on the upper rear side of the base 2, positioning pin 4 is fixed on positioning plate 3, and it cooperates with the mounting hole at the rear end of the shock absorber body 1. The number and position of positioning pin 4 are determined according to the shape of the shock absorber body 1 and the position of the mounting hole.

[0024] Among them, the positioning pin 4 is made of wear-resistant alloy steel and the surface is hardened to ensure positioning accuracy during long-term use.

[0025] The clamping assembly includes a drive component and two L-shaped clamping blocks 9 located on both sides of the shock absorber body 1. The drive component can drive the two L-shaped clamping blocks 9 to rotate simultaneously toward the shock absorber body 1, so that the bottoms of the two L-shaped clamping blocks 9 are respectively clamped to the front ends of both sides of the shock absorber body 1.

[0026] The laser alignment instrument emits a cross laser and detects the offset of the liquid filling hole 11 at the upper end of the shock absorber body 1 in real time (resolution 0.01mm).

[0027] The controller is communicatively connected to the drive unit and the laser alignment instrument.

[0028] In this way, the shock absorber body 1 is first roughly positioned by the positioning pin 4, and then the shock absorber body 1 is precisely positioned by the laser alignment instrument. Then, it is pressed and fixed by the clamping component. The positioning accuracy can reach within ±0.1mm, which effectively ensures the accuracy and consistency of the damping fluid filling position and improves the product quality of the shock absorber. Moreover, the structure is compact, the operation is simple, the positioning is accurate, and the controller is automatically controlled. During filling and sealing, there is no need for frequent manual adjustment and intervention, which saves a lot of time and labor costs and improves work efficiency.

[0029] Furthermore, the driving component is a cylinder 8. The positioning plate 3 has U-shaped blocks 5 with outward openings near its two ends. Recesses 31 are provided at the corresponding positions of the two ends of the positioning plate 3 and the U-shaped blocks 5. The U-shaped block 5 includes two sides and a connecting part forming a U-shaped structure. The first rotation point of the side of the L-shaped clamping block 9 is rotatably connected between the two sides of the U-shaped block 5 via a rotating rod I6, and the second rotation point is rotatably connected within the recesses 31 of the positioning plate 3 via a rotating rod II7. One end of the output rod 81 of the cylinder 8 is fixed to the connecting part of one of the U-shaped blocks 5, and the other end is fixed to the connecting part of the other U-shaped block 5. The rotation angles of the two L-shaped clamping blocks 9 are fixed. A high-thrust, low-friction cylinder 8 is used as the power source, and the clamping and releasing actions of the shock absorber body 1 are achieved through the extension and retraction movement of the cylinder 8.

[0030] When the output rod 81 of cylinder 8 extends, it drives the U-shaped block 5 fixed to the output rod 81 to move inward, which in turn drives the L-shaped clamping block 9 rotatably connected to it to rotate outward and disengage from the shock absorber body 1. Since the rotation angle of the L-shaped clamping block 9 is fixed and the retraction stroke of the output rod 81 is also fixed, when the L-shaped clamping block 9 rotates to the fixed angle, the retraction stroke of the output rod 81 is not yet completed and continues to retract. At this time, due to the relative motion, the cylinder body of cylinder 8 will move towards the output rod 81, driving the U-shaped block 5 fixed to the cylinder body to move inward, which in turn drives the L-shaped clamping block 9 connected to it to rotate outward and disengage from the shock absorber body 1. At this time, both L-shaped clamping blocks 9 disengage from the shock absorber body 1, releasing the clamping. Conversely, when the output rod 81 of cylinder 8 extends, the same working principle applies as when it retracts, driving the two L-shaped clamping blocks 9 to press the shock absorber body 1 in sequence, completing the clamping and fixing of the shock absorber body 1.

[0031] The L-shaped clamping block 9 driven by cylinder 8 moves quickly and clamps evenly, enabling it to reliably clamp the shock absorber body 1 in a short time. The clamping time for a single clamping operation can be controlled within 2-3 seconds, thus improving production efficiency.

[0032] Furthermore, the bottom of the L-shaped clamping block 9 extends a contour block 91, which matches the outer contour of the shock absorber body 1 it contacts. This increases the contact area, makes the clamping force evenly distributed, and avoids damage to the surface of the shock absorber body 1.

[0033] Preferably, the surface of the contour block 91 can also be inlaid with a layer of wear-resistant rubber pad to further protect the surface of the shock absorber body 1 and enhance friction, prevent the shock absorber body 1 from shifting during clamping, and improve positioning stability.

[0034] In a preferred embodiment, an elastic positioning auxiliary block (not shown in the figure) is provided around the positioning pin 4. When the shock absorber body 1 is placed on the base 2, the elastic positioning auxiliary block can adaptively conform to the outer surface of the shock absorber body 1. This further eliminates positioning gaps and improves positioning accuracy and stability.

[0035] It should be noted that the elastic positioning auxiliary block is made of rubber, polyurethane, or other elastic materials.

[0036] In summary, during use, firstly, the shock absorber body 1 to be processed is placed on the base 2, so that the mounting hole of the shock absorber body 1 and the positioning pin 4 are accurately matched. The elastic positioning auxiliary block automatically fits the surface of the shock absorber to achieve precise positioning. Then, the laser alignment instrument emits a cross laser to detect the offset of the liquid filling hole 11 at the upper end of the shock absorber body 1 in real time, and transmits the signal to the controller. The controller analyzes and controls the fine adjustment of the position of the shock absorber body 1. After the position is finely adjusted, the cylinder 8 is started. The output rod 81 of the cylinder 8 pushes the L-shaped clamping block 9 to rotate inward, reliably clamping the front end of the shock absorber body 1.

[0037] Connect the filling connector to the filling hole 11 of the shock absorber body 1. Set the filling flow rate and total volume via the controller, start the filling pump, and begin filling with damping fluid. During filling, monitor the flow rate and total volume in real time. When the set value is reached, filling automatically stops. Place the sealing steel ball 12 above the filling hole 11 of the hydraulic shock absorber. Start the press, and the press head vertically presses down on the sealing steel ball 12. The pressure sensor monitors the sealing pressure in real time. When the pressure reaches the set value, the press automatically stops, completing the sealing operation of the sealing steel ball 12. Release the cylinder 8, remove the shock absorber body 1 that has been filled and sealed, and proceed with the clamping and processing of the next shock absorber body 1.

[0038] It should be noted that the specific structures of the laser alignment instrument, cylinder 8, filling pump, and press in this embodiment can be referred to the existing technology, and will not be repeated in this article.

[0039] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hydraulic shock absorber filling-sealing clamp, comprising a base for supporting the shock absorber body, characterized in that, The base is equipped with: The positioning pin is fixed to the positioning plate on the upper rear side of the base, and the positioning pin is fixed to the positioning plate and cooperates with the mounting hole at the rear end of the shock absorber body. The number and position of the positioning pin are determined according to the shape of the shock absorber body and the position of the mounting hole. The clamping assembly includes a driving component and two L-shaped clamping blocks located on both sides of the shock absorber body. The driving component can drive the two L-shaped clamping blocks to rotate simultaneously toward the shock absorber body, so that the bottoms of the two L-shaped clamping blocks press against the front ends of both sides of the shock absorber body. The laser alignment instrument emits a cross laser and detects the offset of the liquid filling hole at the top of the shock absorber body in real time. The controller is communicatively connected to the drive unit and the laser alignment instrument.

2. The hydraulic shock absorber filling-pressure sealing fixture according to claim 1, characterized in that, The driving component is a cylinder. The positioning plate has U-shaped blocks with outward openings at the rear of both ends. The two ends of the positioning plate have notches at the corresponding positions of the U-shaped blocks. The U-shaped blocks have two sides and a connecting part to form a U-shaped structure. The first rotation point of the side of the L-shaped pressing block is rotatably connected between the two sides of the U-shaped block through a rotating rod I, and the second rotation point is rotatably connected in the notch of the positioning plate through a rotating rod II. One end of the output rod of the cylinder is fixed to the connecting part of one of the U-shaped blocks, and the other end is fixed to the connecting part of the other U-shaped block.

3. The hydraulic shock absorber filling-pressure sealing fixture according to claim 2, characterized in that, The bottom of the L-shaped clamping block extends into a contour block that matches the outer contour of the shock absorber body in contact with it.

4. The hydraulic shock absorber filling-sealing fixture according to claim 1, characterized in that, An elastic positioning auxiliary block is provided around the positioning pin. When the shock absorber body is placed on the base, the elastic positioning auxiliary block can adaptively fit the outer surface of the shock absorber body.

5. The hydraulic shock absorber filling-press sealing fixture according to claim 4, characterized in that, The elastic positioning auxiliary block is made of rubber or polyurethane.

6. The hydraulic shock absorber filling-pressure sealing fixture according to claim 1, characterized in that, The locating pin is made of wear-resistant alloy steel and its surface has been hardened.

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