Mounting and fixing device for umbrella-shaped sealing element of miniature water pump

Abstract

An umbrella-shaped sealing element mounting and fixing device for a miniature water pump comprises a case, an umbrella-shaped sealing element and an umbrella-shaped sealing element, the fixed seat is fixed on a bottom plate in the case through a bolt; the lifting air cylinder is vertically installed on the side wall of the fixing base, and a flange connecting structure is arranged at the end of a cylinder body of the lifting air cylinder; the lifting frame is rigidly connected with the tail end of a piston rod of the lifting air cylinder through a connecting plate, and a through hole is formed in the transverse middle of the lifting frame; the three splicing air cylinders are circumferentially distributed at 120 degrees, and each air cylinder is fixed to the periphery of the lifting frame through an L-shaped support; the three wedge-shaped splicing blocks are fixedly connected with the tail ends of piston rods of the splicing air cylinders correspondingly, and complementary semi-conical holes are formed in the splicing faces of the splicing blocks; the three conical holes are distributed at intervals of 120 degrees, and the depth of the conical holes is smaller than the height of the umbrella nails, so that guiding is formed when the umbrella nails are installed, it is guaranteed that the sealing piece is kept stable in the installation process, inclination or falling is avoided, and the installation reliability is improved.

Description

Technical Field

[0001] This utility model relates to a fixing device, specifically a mounting and fixing device for a micro water pump umbrella-shaped seal. Background Technology

[0002] In the manufacturing process of miniature water pumps, umbrella-shaped seals are key components that ensure the sealing performance and reliability of the water pump. Their installation accuracy and stability directly affect the water pump's waterproof and leak-proof performance and service life.

[0003] Traditional methods of installing umbrella-shaped seals often rely on manual operation or simple tooling fixtures, which have significant drawbacks: Firstly, manual installation is inefficient and cannot meet the needs of large-scale industrial production. Furthermore, human error can lead to seal misalignment and uneven stress, easily causing seal failure. Secondly, some automated installation equipment uses fixed-size clamping structures, which cannot accommodate umbrella-shaped seals of different specifications, resulting in poor versatility. Rigid clamping can also cause extrusion damage to the seal surface, reducing product yield. In addition, existing devices lack precise positioning and stable fixing capabilities; when installing the seal to the corresponding position on the micro water pump, the umbrella pin cannot properly enter the installation position. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a micro water pump umbrella-shaped seal installation and fixing device, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes:

[0006] The chassis constitutes the main frame of the device;

[0007] The mounting base is fixed to the bottom plate inside the chassis by bolts.

[0008] The lifting cylinder is vertically installed on the side wall of the fixed base, and its cylinder body end is provided with a flange connection structure;

[0009] The lifting frame is rigidly connected to the end of the piston rod of the lifting cylinder via a connecting plate, and a through hole is provided in the middle of the horizontal direction of the lifting frame;

[0010] Three cylinders are arranged in a 120° circle, and each cylinder is fixed to the outer periphery of the lifting frame by an L-shaped bracket;

[0011] Three wedge-shaped splicing blocks are fixedly connected to the piston rod end of each splicing cylinder, and the splicing surface of each splicing block is provided with complementary semi-conical holes;

[0012] The variable-diameter tapered hole is formed by combining the inner tapered surfaces of the three splicing blocks, with a tapered angle of 45°±5°. The minimum inner diameter of the tapered hole is clearance-fitted with the umbrella nail rod.

[0013] When the splicing cylinder extends synchronously, it pushes each splicing block to move along the radial axis, so that the semi-conical holes of the three splicing blocks are joined together to form three conical holes.

[0014] Preferably, a reinforcing rib is provided between the mounting base and the chassis. The rib has a right-angled triangle cross-section, with one right-angled side welded to the side of the mounting base and the other right-angled side connected to the chassis bottom plate by countersunk screws.

[0015] Preferably, the front end of the splicing block is provided with an arc-shaped guide portion, the radius of curvature R of which is 1.2-1.5 times the radius of the umbrella nail head.

[0016] Preferably, the axial projection contour of the tapered hole forms a clearance fit area of ​​0.5-1mm with the tapered surface of the umbrella nail head, and the axial length L of the clearance fit area is 1 / 3-1 / 2 of the length of the tapered surface of the umbrella nail.

[0017] Preferably, the three conical holes formed after the splicing blocks are spliced ​​are arranged at 120° intervals.

[0018] Preferably, the depth of the three conical holes formed by the splicing of the semi-conical holes of the splicing blocks is less than the height of the umbrella nail.

[0019] Beneficial effects: Import structure and synchronous drive design: The front end of the splicing block is equipped with an arc-shaped import part with a radius of curvature R that is 1.2-1.5 times the radius of the umbrella nail head, which facilitates the rapid import of the umbrella-shaped seal and reduces manual alignment time.

[0020] Adjustable lifting mechanism: The lifting cylinder drives the lifting frame to move up and down, and the height of the variable diameter tapered hole can be adjusted according to different installation positions of the micro water pump, which is compatible with the installation of seals of various specifications of water pumps, thus improving the versatility of the device.

[0021] Automated cycle operation: processes such as fixing, installing, unfixing, and resetting are automatically driven by cylinders, requiring no manual intervention, reducing labor intensity, suitable for mass production scenarios, and ensuring continuous and stable operation.

[0022] The three conical holes are arranged at 120° intervals and are less than the height of the umbrella nail, forming a guide for the installation of the umbrella nail, ensuring that the seal remains stable during installation, avoiding tilting or falling off, and improving installation reliability. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0025] Figure 2 This is a two-dimensional structural schematic diagram of the present invention from a second perspective;

[0026] Figure 3 This is a utility model Figure 1 A magnified structural diagram of A in the middle;

[0027] Figure 4 This is a utility model Figure 2 A magnified structural diagram of B in the diagram;

[0028] The following are labeled in the diagram: 1. Chassis; 2. Mounting base; 3. Lifting cylinder; 4. Lifting frame; 5. Splicing cylinder; 6. Splicing block; 7. Conical hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 The specific embodiments of this utility model will be described in further detail.

[0030] Implementation examples, by Figure 1-4 This utility model provides a mounting and fixing device for a micro water pump umbrella-shaped seal, comprising:

[0031] Chassis 1 constitutes the main frame of the device;

[0032] The mounting base 2 is fixed to the inner bottom plate of the chassis 1 by bolts;

[0033] The lifting cylinder 3 is vertically installed on the side wall of the fixed base 2, and its cylinder body end is provided with a flange connection structure;

[0034] The lifting frame 4 is rigidly connected to the end of the piston rod of the lifting cylinder 3 via a connecting plate, and a through hole is provided in the middle of the horizontal direction of the lifting frame 4;

[0035] Three cylinders 5 are arranged in a 120° circle, and each cylinder is fixed to the outer periphery of the lifting frame 4 by an L-shaped bracket;

[0036] Three wedge-shaped splicing blocks 6 are fixedly connected to the piston rod ends of each splicing cylinder 5, and the splicing surfaces of each splicing block 6 are provided with complementary semi-conical holes;

[0037] The variable diameter tapered hole 7 is formed by combining the inner tapered surfaces of the three splicing blocks 6, with a tapered angle of 45°±5°. The minimum inner diameter of the tapered hole 7 is in clearance fit with the umbrella nail rod.

[0038] When the splicing cylinder 5 extends synchronously, it pushes each splicing block 6 to move along the radial axis, so that the semi-conical holes of the three splicing blocks 6 are joined together to form three conical holes 7.

[0039] Chassis 1: As the main frame of the device, it provides the mounting base and support for other components, ensuring the stability and integrity of the entire device.

[0040] Mounting base 2: It is firmly fixed to the bottom plate inside the chassis 1 by bolts, and a reinforcing rib is provided between the mounting base 2 and the chassis 1. The rib has a right-angled triangular cross section, with one right-angled side welded to the side of the mounting base 2 and the other right-angled side connected to the bottom plate of the chassis 1 by countersunk screws, which enhances the connection strength between the mounting base 2 and the chassis 1 and improves the stability of the device.

[0041] Lifting cylinder 3: It is vertically installed on the side wall of the fixed base 2. Its cylinder body end is provided with a flange connection structure, which facilitates connection with external equipment and provides power for the lifting movement of the lifting frame 4.

[0042] Lifting frame 4: Rigidly connected to the piston rod end of lifting cylinder 3 via a connecting plate, it moves up and down under the drive of lifting cylinder 3. A through hole is provided in the middle of the horizontal direction of the lifting frame 4 to provide space for the installation and operation of subsequent components.

[0043] Splicing cylinders 5: There are three in total, distributed in a 120° circle. Each cylinder is fixed to the outer periphery of the lifting frame 4 by an L-shaped bracket, and can extend and retract synchronously to provide power for the radial movement of the splicing block 6.

[0044] Three splicing blocks 6 are also included, each fixedly connected to the end of the piston rod of each splicing cylinder 5. Each splicing block 6 has complementary semi-conical holes on its splicing surface and an arc-shaped guide section at its front end. The radius of curvature R of this guide section is 1.2-1.5 times the radius of the umbrella-shaped seal head, facilitating the insertion of the umbrella-shaped seal. When the splicing cylinder 5 pushes the splicing block 6 to move radially along its axis, the semi-conical holes of the three splicing blocks 6 can be joined together to form a specific structure.

[0045] Variable diameter tapered hole 7: Formed by combining the inner tapered surfaces of three splicing blocks 6, with a tapered angle of 45°±5°, and a minimum inner diameter that fits with the umbrella nail shank. The three tapered holes 7 formed by splicing the three splicing blocks 6 are arranged at 120° intervals, and their depth is less than the height of the umbrella nail. The axial projection contour of the tapered hole 7 forms a 0.5-1mm clearance fit area with the tapered surface of the umbrella nail head. The axial length L of this clearance fit area is 1 / 3-1 / 2 of the length of the umbrella nail tapered surface, ensuring that the umbrella-shaped seal can be accurately positioned and stably fixed during installation with the assistance of the tapered holes 7.

[0046] Working principle: When the device is running, the lifting cylinder 3 is activated, and the piston rod pushes the lifting frame 4 to move vertically. The lifting frame 4 is adjusted to a suitable height so that the variable diameter tapered hole 7 is in the position for installing the umbrella-shaped seal.

[0047] Once the lifting frame 4 is positioned, three splicing cylinders 5, arranged in a 120° circumferential distribution, extend synchronously. Each splicing cylinder 5 is securely mounted on the outer periphery of the lifting frame 4 via an L-shaped bracket, and its piston rod pushes the corresponding wedge-shaped splicing block 6 to move radially toward the axis. Because each splicing block 6 has complementary semi-conical holes on its splicing surface, and the radius of curvature of its front arc-shaped inlet is adapted to the umbrella nail head, under the action of the splicing cylinders 5, the three splicing blocks 6 gradually approach each other, and their semi-conical holes combine to form a variable-diameter conical hole 7. The cone angle, minimum inner diameter, and clearance fit design of this conical hole 7 can precisely lock the umbrella nail rod of the umbrella-shaped seal. Simultaneously, the clearance fit area formed by the axial projection contour line of the conical hole 7 and the conical surface of the umbrella nail head can axially limit the seal, achieving stable fixation of the umbrella-shaped seal.

[0048] After the umbrella-shaped seal is fixed, the external installation mechanism can accurately install the seal to the corresponding position on the miniature water pump. Once the installation is complete, the splicing cylinder 5 retracts, causing the splicing block 6 to move radially outwards, separating the variable-diameter tapered hole 7 and releasing the umbrella-shaped seal. Subsequently, the lifting cylinder 3 retracts, driving the lifting frame 4 to reset, awaiting the next installation task. This cycle continues to complete the installation of the umbrella-shaped seal for the miniature water pump.

[0049] Beneficial effects: Precise fit of variable diameter tapered hole: The semi-tapered holes of three splicing blocks 6 are spliced ​​together to form a variable diameter tapered hole 7 with a cone angle of 45°±5°. Its minimum inner diameter is matched with the clearance of the umbrella nail rod, ensuring that the umbrella nail rod is precisely locked and achieving radial positioning.

[0050] The axial projection contour of the tapered hole 7 forms a 0.5-1mm clearance fit area with the tapered surface of the umbrella nail head, and the axial length of this area is 1 / 3-1 / 2 of the length of the umbrella nail tapered surface. This can axially limit the seal, prevent it from moving up and down during installation, and improve positioning accuracy.

[0051] Import structure and synchronous drive design: The front end of the splicing block 6 is equipped with an arc-shaped import part with a radius of curvature R that is 1.2-1.5 times the radius of the umbrella nail head, which facilitates the rapid import of the umbrella-shaped seal and reduces manual alignment time.

[0052] Adjustable lifting mechanism: The lifting cylinder 3 drives the lifting frame 4 to move up and down. The height of the variable diameter tapered hole 7 can be adjusted according to different installation positions of the micro water pump, which is compatible with the installation of seals of various specifications of water pumps, thus improving the versatility of the device.

[0053] Automated cycle operation: processes such as fixing, installing, unfixing, and resetting are automatically driven by cylinders, requiring no manual intervention, reducing labor intensity, suitable for mass production scenarios, and ensuring continuous and stable operation.

[0054] The three conical holes 7 are arranged at 120° intervals and their depth is less than the height of the umbrella nail, forming a guide for the installation of the umbrella nail, ensuring that the seal remains stable during installation, avoiding tilting or falling off, and improving installation reliability.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mounting and fixing device for a micro water pump umbrella-shaped seal, characterized in that, include: The chassis (1) forms the main frame of the device; The mounting base (2) is fixed to the bottom plate inside the chassis (1) by bolts; The lifting cylinder (3) is vertically installed on the side wall of the fixed base (2), and its cylinder body end is provided with a flange connection structure; The lifting frame (4) is rigidly connected to the end of the piston rod of the lifting cylinder (3) through a connecting plate, and a through hole is provided in the middle of the horizontal direction of the lifting frame (4); Three assembled cylinders (5) are arranged in a 120° circle, and each cylinder is fixed to the outer periphery of the lifting frame (4) by an L-shaped bracket; Three wedge-shaped splicing blocks (6) are fixedly connected to the piston rod ends of each splicing cylinder (5), and the splicing surfaces of each splicing block (6) are provided with complementary semi-conical holes; The variable diameter tapered hole (7) is formed by combining the inner tapered surfaces of the three splicing blocks (6), with a tapered angle of 45°±5°. The minimum inner diameter of the tapered hole (7) is in clearance fit with the umbrella nail rod. When the splicing cylinder (5) extends synchronously, it pushes each splicing block (6) to move along the radial axis, so that the semi-conical holes of the three splicing blocks (6) are joined together to form three conical holes (7).

2. The micro water pump umbrella-shaped seal mounting and fixing device according to claim 1, characterized in that: A reinforcing rib is provided between the fixed base (2) and the chassis (1). The cross section of the rib is a right triangle. One right-angled side is welded to the side of the fixed base (2), and the other right-angled side is connected to the bottom plate of the chassis (1) by countersunk screws.

3. The micro water pump umbrella-shaped seal mounting and fixing device according to claim 2, characterized in that: The splicing block (6) has an arc-shaped inlet at its front end, and the radius of curvature R of the inlet is 1.2-1.5 times the radius of the umbrella nail head.

4. The micro water pump umbrella-shaped seal mounting and fixing device according to claim 3, characterized in that: The axial projection contour of the tapered hole (7) forms a clearance fit area of ​​0.5-1mm with the tapered surface of the umbrella nail head. The axial length L of the clearance fit area is 1 / 3-1 / 2 of the length of the tapered surface of the umbrella nail.

5. The micro water pump umbrella-shaped seal mounting and fixing device according to claim 4, characterized in that: The three conical holes (7) formed by splicing the splicing blocks (6) are arranged at 120° intervals.

6. The micro water pump umbrella-shaped seal mounting and fixing device according to claim 5, characterized in that: The depth of the three conical holes (7) formed by the splicing of the semi-conical holes of the splicing block (6) is less than the height of the umbrella nail.

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