A single-sided necking mold for a shock absorber reservoir

Abstract

This utility model relates to the technical field of automotive parts processing equipment, and discloses a single-sided necking mold for a shock absorber reservoir. It includes a positioning surface, a lower end of a mandrel fixedly connected to the top surface of the positioning surface, a necking outer mold above the positioning surface, an upper end of a mandrel rotatably connected to the top surface of the lower end of the mandrel, a rotating groove at the bottom of the outer wall of the upper end of the mandrel, a rotating shaft rotatably connected to the inner wall of the rotating groove, the rotating shaft connecting the upper and lower ends of the mandrel, a collection port and an oil outlet hole penetrating through the top of the positioning surface, an oil suction pipe fixedly connected to the inner wall of the oil outlet hole, an atomizing nozzle connected to the top of the oil suction pipe, an oil suction machine connected to the bottom of the oil outlet hole, and an oil tank connected to the bottom surface of the positioning surface. This utility model solves the problem of difficult demolding after necking through a split, deflectable mandrel design, and reduces friction using an automatic atomizing circulating lubrication system, thus protecting the mandrel surface and extending the mold's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing equipment technology, and in particular to a single-sided narrowing mold for a shock absorber reservoir. Background Technology

[0002] As a key component of the automotive suspension system, the reservoir of the CDC shock absorber requires extrusion deformation of the cylinder end using a necking mold during manufacturing to meet assembly precision requirements. During the necking process, the metal cylinder undergoes severe plastic deformation under the strong extrusion of the outer mold and tightly fits against the internal mandrel. This process is accompanied by enormous radial pressure and frictional heat. Existing mold structures lack a complete automatic lubrication and cooling mechanism, resulting in a high-load dry friction state between the mandrel surface and the inner wall of the reservoir. This harsh working condition not only accelerates the wear and failure of the mandrel surface but also exacerbates the resistance to workpiece insertion and removal, seriously affecting the service life of the mold and the internal surface quality of the product.

[0003] Meanwhile, after the necking process is completed, the diameter of the liquid storage cylinder port is reduced and a huge clamping force is generated to tightly grip the mandrel. Existing necking molds generally adopt an integral fixed mandrel structure. This rigid connection method cannot provide any form of avoidance or tilting space during the demolding stage, making it difficult for the processed workpiece to be smoothly separated from the mandrel. When operators perform forced unloading, not only is the labor intensity high, but the production efficiency is also low. This structural defect may even cause the mandrel connection to break or the workpiece port to deform.

[0004] Therefore, this utility model proposes a single-sided narrowing mold for a shock absorber reservoir to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the existing technology of a single-sided narrowing mold for a shock absorber reservoir, such as the easy wear of the mandrel surface due to dry friction, the large resistance to workpiece insertion, and the difficulty in demolding and removing the workpiece after processing due to the fixed mandrel structure, this utility model aims to provide a single-sided narrowing mold for a shock absorber reservoir with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a single-sided narrowing mold for a shock absorber reservoir, comprising: a positioning surface, a lower end of a mandrel fixedly connected to the top surface of the positioning surface, and a corresponding narrowing outer mold disposed above the positioning surface; it also includes an upper end of a mandrel rotatably connected to the top surface of the lower end of the mandrel, and an automatic lubrication circulation system integrated into the positioning surface.

[0007] The upper end of the mandrel has a rotating groove at the bottom of its outer wall, and a rotating shaft is rotatably connected to the inner wall of the rotating groove. Multiple collection ports are opened through the top of the positioning surface, and an oil outlet is also opened through the top of the positioning surface and outside the collection ports.

[0008] Furthermore, the two ends of the rotating shaft are respectively connected to the inner wall of the upper end of the spindle and the top protrusion of the lower end of the spindle. An oil suction pipe is fixedly connected to the inner wall of the oil outlet, and an atomizing nozzle is fixedly connected to the top of the oil suction pipe. An oil suction machine is fixedly connected to the bottom of the outer wall of the oil outlet, and an oil tank is fixedly connected to the bottom of the positioning surface. The oil suction machine, oil suction pipe, atomizing nozzle and oil tank together form an automatic lubrication circulation loop for the upper end of the spindle.

[0009] Preferably, the rotating shaft horizontally penetrates the protruding structure on the top surface of the lower end of the mandrel and the inner walls of both sides of the rotating groove at the bottom of the upper end of the mandrel. The upper end of the mandrel is deflected relative to the lower end of the mandrel in a direction perpendicular to the axis of the rotating shaft through the rotating groove. The outer wall of the rotating shaft and the inner wall of the rotating groove are fitted with a clearance, thereby realizing the flexible swing of the upper end of the mandrel and facilitating demolding.

[0010] Preferably, the input end of the oil suction machine extends to the bottom of the oil tank to fully absorb the lubricating oil, and the output end of the oil suction machine is sealed to the bottom inlet of the oil outlet to prevent leakage.

[0011] Preferably, multiple collection ports on the top of the positioning surface are arranged in a ring array on the outer periphery of the lower end of the mandrel, and the bottom outlet of the collection port is directly connected to the inner cavity of the oil tank, so as to collect the dripping lubricating oil from all directions and return it for reuse.

[0012] Preferably, the spray nozzle of the atomizing nozzle faces the outer wall of the upper end of the mandrel, and the atomizing nozzle is connected to the top of the oil extraction pipe through an L-shaped bend connector to ensure that the oil mist accurately covers the working area.

[0013] Preferably, the outer diameter of the upper end of the mandrel is matched with the inner diameter of the liquid storage cylinder to be narrowed, and the outer wall of the upper end of the mandrel is used to fit the liquid storage cylinder to be narrowed, thereby playing an internal support and shaping role during the narrowing process.

[0014] Preferably, the bottom center of the narrowing outer mold is provided with a forming cavity hole, and the inner wall shape of the forming cavity hole matches the shape of the narrowing end of the single-sided narrowing liquid storage cylinder. The narrowing outer mold is used to squeeze the top edge of the liquid storage cylinder to be narrowed, so that the liquid storage cylinder to be narrowed undergoes plastic deformation.

[0015] Preferably, the outer diameter of the lower end of the mandrel is larger than the outer diameter of the upper end of the mandrel, and the top edge of the lower end of the mandrel forms an annular stepped surface to support the bottom of the liquid storage cylinder to be narrowed, thereby achieving axial positioning of the workpiece.

[0016] Preferably, a sealing ring is provided between the oil extraction pipe and the oil outlet to enhance the sealing performance, and the top surface of the oil tank and the bottom surface of the positioning surface are fixedly connected by bolts to ensure the overall stability of the structure.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting a split mandrel structure, uses a rotating shaft to connect the upper end and the lower end of the mandrel, so that the upper end of the mandrel can be deflected relative to the lower end of the mandrel. This solves the problem in the prior art where the workpiece is tightly clamped on the fixed mandrel after the narrowing process, making demolding and removal difficult. It achieves the effect of making it easy for operators to remove the processed workpiece by tilting the mandrel, thereby significantly improving demolding efficiency and ease of operation.

[0018] 2. This utility model, by constructing an automatic circulating lubrication system including an oil tank, an oil suction machine, an atomizing nozzle, and a return collection port, uses atomized spraying to lubricate the surface of the mandrel. This solves the problems in the prior art where dry friction on the mandrel surface leads to high resistance when the workpiece is inserted and easy wear and damage to the outer wall of the mandrel. It achieves the effects of reducing processing friction, protecting the mandrel surface, extending the service life of the mold, and realizing the recycling and reuse of lubricating oil, saving production costs and maintaining a clean working environment. Attached Figure Description

[0019] Figure 1 This is a perspective view of the front side of the outer mold of the single-sided narrowing mold of the shock absorber reservoir proposed in this utility model. Figure 2 This is a partial structural breakdown diagram of the liquid storage cylinder to be narrowed in a single-sided narrowing mold for a shock absorber storage cylinder proposed in this utility model. Figure 3 This is a partial structural diagram of the oil tank of a single-sided narrowing mold for a shock absorber reservoir proposed in this utility model; Figure 4 This is a partial structural diagram of a single-sided narrowed mouth liquid storage cylinder, which is a type of mold for a shock absorber liquid storage cylinder proposed in this utility model.

[0020] Legend: 1. Shrinking outer mold; 2. Collection port; 3. Positioning surface; 4. Liquid storage cylinder to be shrunk; 5. Atomizing nozzle; 6. Oil tank; 7. Upper end of mandrel; 8. Rotating shaft; 9. Oil suction machine; 10. Oil suction pipe; 11. Oil outlet; 12. Single-sided shrinking liquid storage cylinder; 13. Rotating groove; 14. Lower end of mandrel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0022] Please refer to Figures 1 to 4 This utility model provides a single-sided narrowing mold for a shock absorber reservoir, which aims to solve the technical problems in the prior art, such as severe wear caused by high friction between the mandrel and the workpiece, and difficulty in demolding and removing the part due to the fixed mandrel structure.

[0023] Please refer to Figure 1 and Figure 2 A single-sided constriction mold for a shock absorber reservoir includes a positioning surface 3 and an oil tank 6 fixedly connected to the bottom surface of the positioning surface 3. The positioning surface 3 serves as a base platform supporting the overall structure. A lower end 14 of a mandrel is fixedly connected to the top surface of the positioning surface 3. An upper end 7 of a mandrel is rotatably connected to the top surface of the lower end 14 of the mandrel. A rotating groove 13 is provided at the bottom of the outer wall of the upper end 7 of the mandrel. A rotating shaft 8 is rotatably connected to the inner wall of the rotating groove 13. The two ends of the rotating shaft 8 are respectively connected to the inner wall of the upper end 7 of the mandrel and the top protrusion structure of the lower end 14 of the mandrel. The rotating shaft 8 horizontally penetrates the protrusion structure on the top surface of the lower end 14 of the mandrel and the inner walls on both sides of the rotating groove 13 at the bottom of the upper end 7 of the mandrel. The upper end 7 of the mandrel is deflected at an angle relative to the lower end 14 of the mandrel in a direction perpendicular to the axis of the rotating shaft 8 through the rotating groove 13 and the rotating shaft 8.

[0024] A constricted outer mold 1 is provided above the positioning surface 3. The constricted outer mold 1 can move vertically up and down relative to the positioning surface 3. Multiple collection ports 2 are opened through the top of the positioning surface 3. An oil outlet 11 is also opened through the top of the positioning surface 3 and outside the collection ports 2. An oil suction pipe 10 is fixedly connected to the inner wall of the oil outlet 11. An atomizing nozzle 5 is fixedly connected to the top of the oil suction pipe 10 through an L-shaped bend connector. An oil suction machine 9 is fixedly connected to the bottom of the outer wall of the oil outlet 11. The input end of the oil suction machine 9 extends to the bottom of the oil tank 6. The output end of the oil suction machine 9 is sealed to the bottom inlet of the oil outlet 11.

[0025] Please refer to Figure 2 and Figure 4The outer diameter of the lower end 14 of the mandrel is larger than the outer diameter of the upper end 7 of the mandrel. The top edge of the lower end 14 of the mandrel forms an annular stepped surface to support the bottom of the liquid storage cylinder 4 to be narrowed. When the liquid storage cylinder 4 to be narrowed is fitted onto the outer wall of the upper end 7 of the mandrel, the bottom end face of the liquid storage cylinder 4 to be narrowed abuts against the annular stepped surface of the top surface of the lower end 14 of the mandrel. The outer diameter of the upper end 7 of the mandrel is adapted to the inner diameter of the liquid storage cylinder 4 to be narrowed. The outer wall of the upper end 7 of the mandrel is used to fit the liquid storage cylinder 4 to be narrowed. During the processing, the upper end 7 of the mandrel... End 7 not only serves a positioning function, but also acts as an inner mold to support the inner wall of the liquid storage cylinder 4 to be narrowed, ensuring the accuracy of the inner diameter after narrowing. The upper end 7 of the mandrel is rotated relative to the lower end 14 of the mandrel through the rotating groove 13 and the rotating shaft 8. This hinge-like connection allows the upper end 7 of the mandrel to tilt to one side when not in operation, making it convenient for operators to remove the processed single-sided narrowed liquid storage cylinder 12 from the upper end 7 of the mandrel, avoiding the difficulty of removing the part caused by the tight fit between the workpiece and the mandrel.

[0026] At the same time, a forming die hole is provided at the center of the bottom surface of the outer mold 1 for narrowing. The inner wall shape of the forming die hole matches the top narrowing shape of the single-sided narrowing liquid storage cylinder 12. During the narrowing process, the outer mold 1 for narrowing descends vertically under the action of the external driving device. The outer mold 1 for narrowing is used to squeeze the top edge of the liquid storage cylinder 4 to be narrowed, forcing the top metal of the liquid storage cylinder 4 to flow inward and fit against the upper end 7 of the mandrel, thereby completing the narrowing forming.

[0027] As a preferred embodiment, to ensure the reliability of the connection between the upper end 7 and the lower end 14 of the mandrel and the flexibility of rotation, please refer to... Figure 2 and Figure 4 The two ends of the rotating shaft 8 are respectively fixedly connected to the inner wall of the upper end 7 of the mandrel and the top protrusion of the lower end 14 of the mandrel. Specifically, the outer wall of the rotating shaft 8 and the inner wall of the rotating groove 13 are fitted with a clearance, allowing the upper end 7 of the mandrel to rotate freely relative to the lower end 14 of the mandrel around the axis of the rotating shaft 8, thereby realizing the angle deflection function of the upper end 7 of the mandrel and facilitating demolding and part removal.

[0028] As another preferred embodiment, in order to achieve efficient recycling of the lubricating oil and prevent oil leakage, please refer to... Figure 1 and Figure 3 The input end of the oil suction machine 9 extends to the bottom of the oil tank 6 to ensure that the lubricating oil in the oil tank 6 can be fully sucked. A sealing ring is provided between the output end of the oil suction machine 9 and the bottom inlet of the oil outlet 11 and a sealing connection is adopted to prevent the lubricating oil from leaking during the transportation process. At the same time, the spray nozzle of the atomizing nozzle 5 faces the outer wall of the upper end 7 of the mandrel. The atomizing nozzle 5 is connected to the top of the oil suction pipe 10 through an L-shaped bent pipe joint, so that the atomized lubricating oil can be directly sprayed onto the working surface of the upper end 7 of the mandrel, reducing waste and improving the lubrication effect.

[0029] As another preferred embodiment, to improve lubricant recovery efficiency and keep the work surface clean, please refer to... Figure 1 and Figure 3 Multiple collection ports 2 on the top of the positioning surface 3 are arranged in a ring array on the outer periphery of the lower end 14 of the mandrel, and the bottom outlet of the collection port 2 is directly connected to the inner cavity of the oil tank 6. This layout ensures that excess lubricating oil dripping from the upper end 7 of the mandrel can be quickly collected by the collection ports 2 distributed around it and flow back into the oil tank 6, realizing a closed loop circulation and avoiding oil pollution of the environment or waste.

[0030] Working principle: Before or after the necking process, when preparing for the next round of processing, the oil suction machine 9 starts working. The oil suction machine 9 extracts the lubricating oil stored in the oil tank 6. The lubricating oil enters the oil suction pipe 10 through the oil outlet 11 and is finally delivered to the atomizing nozzle 5. The atomizing nozzle 5 atomizes the lubricating oil and sprays it evenly onto the outer wall surface of the upper end 7 of the mandrel. Excess lubricating oil drips onto the positioning surface 3 and flows back into the oil tank 6 through the collection port 2, realizing automatic circulating lubrication of the surface of the upper end 7 of the mandrel. This lubrication effectively reduces the frictional resistance when the necking reservoir 4 is inserted, and avoids scratches or damage to the outer wall of the upper end 7 of the mandrel caused by dry friction. After lubrication, the liquid storage cylinder 4 to be narrowed is sleeved on the upper end 7 of the mandrel. The bottom of the liquid storage cylinder 4 to be narrowed is axially positioned against the lower end 14 of the mandrel. Then, the external hydraulic equipment drives the outer mold 1 to descend vertically. The forming cavity at the bottom of the outer mold 1 contacts and squeezes the top of the liquid storage cylinder 4 to be narrowed. As the outer mold 1 continues to descend, the top edge of the liquid storage cylinder 4 to be narrowed shrinks and deforms inward under the extrusion force and adheres tightly to the outer wall of the upper end 7 of the mandrel. The upper end 7 of the mandrel restricts the inner diameter of the liquid storage cylinder 4 to be narrowed, thereby forming a single-sided narrowed liquid storage cylinder 12. After the necking process is completed, the necking outer mold 1 rises and resets. At this time, the single-sided necking liquid storage cylinder 12 tightly covers the upper end 7 of the mandrel. Since the upper end 7 of the mandrel is rotatably connected to the lower end 14 of the mandrel through the rotating groove 13 and the rotating shaft 8, the operator pushes the upper end 7 of the mandrel, causing the upper end 7 of the mandrel to tilt relative to the lower end 14 of the mandrel. The tilting of the upper end 7 of the mandrel changes the force state with the single-sided necking liquid storage cylinder 12, making it easy to remove the single-sided necking liquid storage cylinder 12 from the upper end 7 of the mandrel, thus completing the entire single-sided necking process.

Claims

1. A single-sided necking mold for a shock absorber reservoir, comprising: Positioning surface (3), the top surface of the positioning surface (3) is fixedly connected to the lower end (14) of the mandrel, and a constricted outer mold (1) is correspondingly provided above the positioning surface (3); Its features are, The top surface of the lower end (14) of the spindle is rotatably connected to the upper end (7) of the spindle. A rotating groove (13) is provided at the bottom of the outer wall of the upper end (7) of the spindle. A rotating shaft (8) is rotatably connected to the inner wall of the rotating groove (13). The two ends of the rotating shaft (8) are respectively connected to the inner wall of the upper end (7) of the spindle and the top protrusion of the lower end (14) of the spindle. Multiple collection ports (2) are provided through the top of the positioning surface (3). An oil outlet hole (11) is also provided through the top of the positioning surface (3) and outside the collection port (2). An oil suction pipe (10) is fixedly connected to the inner wall of the oil outlet hole (11). An atomizing nozzle (5) is fixedly connected to the top of the oil suction pipe (10). An oil suction machine (9) is fixedly connected to the bottom of the outer wall of the oil outlet hole (11). An oil tank (6) is fixedly connected to the bottom surface of the positioning surface (3).

2. The single-sided narrowing mold for a shock absorber reservoir according to claim 1, characterized in that, The upper end (7) of the mandrel is deflected relative to the lower end (14) of the mandrel in a direction perpendicular to the axis of the rotating shaft (8) through the rotating groove (13). The outer wall of the rotating shaft (8) is in clearance fit with the inner wall of the rotating groove (13).

3. The single-sided narrowing mold for a shock absorber reservoir according to claim 1, characterized in that, The input end of the oil suction machine (9) extends to the bottom of the inside of the oil tank (6), and the output end of the oil suction machine (9) is sealed to the bottom inlet of the oil outlet (11).

4. The single-sided narrowing mold for a shock absorber reservoir according to claim 1, characterized in that, The multiple collection ports (2) on the top of the positioning surface (3) are arranged in a ring array on the outer periphery of the lower end (14) of the mandrel, and the bottom outlet of the collection port (2) is directly connected to the inner cavity of the oil tank (6).

5. A single-sided narrowing mold for a shock absorber reservoir according to claim 1, characterized in that, The nozzle (5) is directed toward the outer wall of the upper end (7) of the spindle, and the nozzle (5) is connected to the top of the oil extraction pipe (10) through an L-shaped bend connector.

6. A single-sided necking mold for a shock absorber reservoir according to claim 1, characterized in that, The outer diameter of the upper end (7) of the mandrel is adapted to the inner diameter of the liquid storage cylinder (4) to be narrowed, and the outer wall of the upper end (7) of the mandrel is used to fit the liquid storage cylinder (4) to be narrowed.

7. A single-sided necking mold for a shock absorber reservoir according to claim 1, characterized in that, The bottom center of the constricted outer mold (1) is provided with a forming concave mold hole, and the inner wall shape of the forming concave mold hole matches the constricted end shape of the single-sided constricted liquid storage cylinder (12).

8. A single-sided necking mold for a shock absorber reservoir according to claim 1, characterized in that, The outer diameter of the lower end (14) of the mandrel is larger than the outer diameter of the upper end (7) of the mandrel, and the top edge of the lower end (14) of the mandrel forms an annular stepped surface for supporting the bottom of the liquid storage cylinder (4) to be narrowed.

9. A single-sided necking mold for a shock absorber reservoir according to claim 1, characterized in that, A sealing ring is provided between the oil extraction pipe (10) and the oil outlet (11), and the top surface of the oil tank (6) is fixedly connected to the bottom surface of the positioning surface (3) by bolts.

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