Pump head assembly apparatus

Abstract

The patent application belongs to the technical field of automation equipment, and particularly discloses a floating press-fitting device and a pump head assembling equipment with the device, which comprises a static ring floating press-fitting rack, a floating press-fitting driving module and a floating press-fitting head; the floating press-fitting driving module is installed on the static ring floating press-fitting rack and used for driving the floating press-fitting head to perform a press-fitting action by approaching or moving away from a rotor; the floating press-fitting head comprises a floating press-fitting seat, an active cavity is formed in the floating press-fitting seat, a press-fitting elastic piece is assembled in the active cavity, one end of the press-fitting elastic piece is in abutment with a cavity bottom of the active cavity, and the other end is connected with a floating press rod. Through the design of the floating press-fitting head of the floating press-fitting device, the assembling deviation of the static ring can be automatically corrected in the press-fitting process, and the static ring is prevented from being damaged or broken due to uneven stress.

Description

Technical Field

[0001] This patent application belongs to the field of automation equipment technology, specifically referring to pump head assembly equipment. Background Technology

[0002] A centrifugal pump is a general-purpose fluid machine that relies on centrifugal force to transport liquids. Existing centrifugal pumps use the pump casing as the load-bearing base, with a fixed rotor and stator inside the pump casing as the power core. The end of the pump casing is connected to the outer impeller through a bracket, and an oil seal is installed between the bracket and the impeller to achieve sealing. It is also equipped with auxiliary components such as gaskets, O-rings, and bases.

[0003] The assembly of existing centrifugal pumps presents the following challenges:

[0004] 1. The assembly process of centrifugal pumps mostly relies on manual labor, resulting in low overall manufacturing efficiency and difficulty in meeting the needs of large-scale production.

[0005] 2. When pressing the stationary ring of the oil seal, it needs to be pre-fitted onto the rotor and then pressed in using a press head. Due to the dimensional accuracy of the stationary ring itself and the influence of the assembly operation, the stationary ring is prone to shifting on the rotor, which can easily cause damage or even breakage of the stationary ring during subsequent pressing.

[0006] 3. The inner side of the rotating ring of the oil seal is provided with a rubber layer that contacts the rotor. During the process of installing the rotating ring onto the rotor, the connecting key at the end of the rotor will rub against the rubber layer, which will cause the rubber layer to break and affect the sealing performance of the oil seal. Summary of the Invention

[0007] The purpose of this patent application is to provide a floating press fitting device and a pump head assembly device having the device.

[0008] The purpose of this patent application is achieved as follows:

[0009] The floating press fitting device includes a static ring floating press fitting frame, a floating press fitting drive module, and the floating press fitting head;

[0010] The floating press-fitting drive module is installed on the static ring floating press-fitting frame and is used to drive the floating press-fitting head to move closer to or away from the rotor to perform the press-fitting action.

[0011] The floating press head includes a floating press seat with a movable cavity formed therein. A press elastic element is assembled in the movable cavity. One end of the press elastic element abuts against the bottom of the movable cavity, and the other end is connected to a floating press rod. One end of the floating press rod is confined within the movable cavity and can move into the movable cavity. A floating press mold is provided on the outer edge of the floating press rod. The floating press mold is used to abut against and position with the bracket, and at the same time applies a stable floating press force to the stationary ring along the axial direction.

[0012] Pump head assembly equipment,

[0013] It includes a main frame, and a transfer device, a bracket assembly device, an oil seal feeding device, and an auxiliary component assembly device that are fixedly installed on the main frame;

[0014] The transfer device is provided with several loading positions at intervals. Each loading position is used to position and place the pump casing of the centrifugal pump and the bracket to be assembled. The transfer device can drive the pump casing and the bracket to be assembled on each loading position to be sequentially transferred to the working positions of the bracket assembly device, the oil seal feeding device and the auxiliary component assembly device.

[0015] The bracket assembly device is used to press and position the bracket to be assembled against the rotor inside the pump casing, and to tighten and fix the screws on the edge of the bracket.

[0016] The oil seal feeding device is used to assemble the stationary ring and the rotating ring of the oil seal onto the rotor in sequence;

[0017] The auxiliary component assembly device is used to sequentially assemble the gasket, snap ring and O-ring to the corresponding assembly position of the centrifugal pump.

[0018] The oil seal feeding device includes the aforementioned floating press-fitting device.

[0019] Furthermore, the oil seal feeding device includes a stationary ring feeding assembly and the floating pressing device;

[0020] The stationary ring feeding assembly is used to grab and transport the stationary ring to the preset assembly position of the rotor;

[0021] The floating press-fitting device uses the floating press-fitting head to perform floating press-fitting on the stationary ring at the preset assembly position of the rotor, so as to correct the assembly offset of the stationary ring and achieve precise press-fitting of the stationary ring and the rotor.

[0022] Furthermore, the stationary ring feeding assembly includes: a stationary ring feeding frame, a stationary ring hopper, a stationary ring lubricant hopper, and stationary ring transport grippers;

[0023] The stationary ring hopper and the stationary ring lubricant hopper are both fixedly installed on the stationary ring feeding frame. The stationary ring hopper is used to hold the stationary ring to be assembled, and the stationary ring lubricant hopper is used to store lubricant.

[0024] The stationary ring transport claw is connected to the stationary ring loading drive module. The stationary ring loading drive module drives the stationary ring transport claw to perform the following actions in sequence: grab the stationary ring from the stationary ring hopper, slide it to the stationary ring lubricant hopper to wet the stationary ring with lubricant, and then move it to the rotor above the loading position and place the stationary ring on the rotor.

[0025] Furthermore, a rotating ring is rotatably mounted on the stationary ring transport claw, and a plurality of nozzles are sequentially connected along the circumference of the rotating ring. Each nozzle surrounds the outside of the stationary ring transport claw, and the nozzles are used to spray gas toward the stationary ring or the stationary ring mounting position of the rotor during the process of the stationary ring transport claw transporting the stationary ring.

[0026] Furthermore, the oil seal feeding device also includes a rotating ring mounting assembly, which includes a rotating ring mounting frame. The rotating ring mounting frame is equipped with a rotating ring hopper, a rotating ring lubricant hopper, and a rotating ring feeding drive module. The rotating ring feeding drive module drives the rotating ring mounting component, and the rotating ring feeding drive module drives the rotating ring mounting component to complete the following actions in sequence: grabbing the rotating ring from the rotating ring hopper, sliding it to the rotating ring lubricant hopper to immerse the rotating ring in lubricant, and then transferring it to the rotor above the loading position and placing the rotating ring on the rotor for pressing.

[0027] Furthermore, the dynamic ring mounting component includes:

[0028] A rotating ring mounting base plate is connected to the rotating ring feeding drive module;

[0029] The moving ring press-fit motor has a sliding drive with a moving ring press-fit plate.

[0030] A rotating ring pressure bar is fixed on the rotating ring pressing plate. The rotating ring pressure bar is hollow and a rotating ring gripping rod is slidably provided inside the rotating ring pressure bar. The rotating ring gripping rod is used to extend and insert into the rotating ring to grip the rotating ring and retract after the rotating ring is transported above the rotor so that it falls onto the rotor. The rotating ring pressure bar is used to press the rotating ring on the rotor after the rotating ring falls onto the rotor.

[0031] Furthermore, the rotating ring mounting frame is provided with a rotating ring protection structure, which includes a guide sleeve, a guide sleeve manipulator that grips the guide sleeve, and a protection drive module that drives the guide sleeve manipulator to move, for mounting the guide sleeve onto the rotor before the rotating ring is transferred to the loading position.

[0032] Furthermore, the auxiliary component assembly device includes a gasket conveying assembly, a snap ring conveying assembly, and an auxiliary component assembly frame. The gasket conveying assembly includes a gasket conveying vibratory feeder, a gasket loading seat, and a gasket gripper. The snap ring conveying assembly includes a snap ring conveying vibratory feeder, a snap ring loading seat, and a snap ring gripper.

[0033] The auxiliary component assembly frame is equipped with an auxiliary component assembly sliding module. The auxiliary component assembly sliding module drives the retaining spring gripper and the pad gripper. The pad conveying vibratory plate and the retaining spring conveying vibratory plate are used to convey the pad and retaining spring to the pad loading seat and the retaining spring loading seat, respectively. Then, the pad gripper and the retaining spring gripper grab the pad and the retaining spring to the loading position for assembly.

[0034] Furthermore, the outlet of the circlip conveying vibratory feeder is provided with a circlip guide rail adapted to the shape of the circlip, and the vibratory feeder drives the circlip and causes the circlip to be embedded in the circlip guide rail for conveying.

[0035] The circlip loading seat is provided with a support groove, and a support rod is provided in the support groove. One end of the support groove is provided with a first material port that connects to the circlip guide rail, and the other end of the support groove is provided with a second material port. The support rod is used to push the circlip located in the first material port to the second material port, and the end of the support rod presses against one end of the circlip to make the circlip located in the second material port open. When the circlip gripper is located in the second material port, the support rod resets to make the circlip close and located on the circlip gripper.

[0036] The outstanding and beneficial technical effects of this patent application compared to the prior art are:

[0037] This pump head assembly equipment achieves automatic connection of each process through a transfer device, automatic pressing and locking of the bracket through a bracket assembly device, automatic feeding, lubrication, and pressing of the oil seal stationary and rotating rings through an oil seal feeding device, and automatic assembly of gaskets, snap rings, and O-rings through an auxiliary component assembly device. In particular, the floating pressing head design of the floating pressing device automatically corrects the assembly misalignment of the stationary ring during pressing, preventing damage or breakage due to uneven stress. The guide sleeve design of the rotating ring protection structure prevents the connecting key at the rotor end from rubbing against the rubber layer inside the rotating ring, protecting the integrity of the rubber layer and ensuring the sealing performance of the oil seal. This equipment achieves fully automatic assembly of centrifugal pumps, significantly improving production efficiency, reducing labor costs, and ensuring the stability and consistency of product quality. Attached Figure Description

[0038] Figure 1 This is a structural schematic diagram of the pump head assembly equipment.

[0039] Figure 2 This is a structural diagram of the clamping device and the screw-locking device.

[0040] Figure 3 This is a structural diagram of the static ring feeding assembly.

[0041] Figure 4 This is a schematic diagram of the static ring transport gripper.

[0042] Figure 5 This is a schematic diagram of the cross-section at the rotating ring.

[0043] Figure 6 This is a schematic diagram of the floating press-fitting device.

[0044] Figure 7 This is a cross-sectional schematic diagram of the floating press-fitting device.

[0045] Figure 8 This is a structural schematic diagram of the dynamic ring mounting assembly.

[0046] Figure 9 This is a schematic diagram of the dynamic ring protection structure in the dynamic ring mounting assembly.

[0047] Figure 10 This is a structural schematic diagram of the rotating ring mounting component.

[0048] Figure 11 This is a cross-sectional schematic diagram of the rotating ring mounting component.

[0049] Figure 12 This is a structural schematic diagram of the auxiliary component assembly device.

[0050] Figure 13 This is a schematic diagram of the feeding of the gasket feeder and the snap ring feeder.

[0051] Figure 14 This is a cross-sectional schematic diagram of the snap ring feeder.

[0052] Figure 15 This is an exploded view of the circlip feeder.

[0053] The meaning of the labels in the diagram:

[0054] 1. Main unit rack;

[0055] 2. Transfer device; 21. Loading position;

[0056] 3. Bracket assembly device; 31. Stamping device; 32. Screw locking device;

[0057] 4. Auxiliary component assembly device; 41. Gasket conveying vibratory feeder; 42. Gasket loading seat; 43. Auxiliary component assembly frame; 44. Gasket gripper; 45. Snap ring conveying vibratory feeder; 451. Snap ring guide rail; 46. Snap ring loading seat; 461. Support slide groove; 462. Support slide rod; 4621. Conical support head; 4611. Support rod sliding part; 4612. Snap ring sliding part; 4613. Extension block; 4614. Circular support boss; 463. First feed port; 464. Second feed port; 465. Snap ring loading base plate; 466. Snap ring sealing plate; 47. Snap ring gripper; 48. Auxiliary component assembly sliding module;

[0058] 5. Stationary ring feeding assembly; 51. Stationary ring feeding frame; 52. Stationary ring hopper; 53. Stationary ring lubricant tank; 54. Stationary ring handling gripper; 55. Stationary ring feeding drive module; 56. Rotating ring; 57. Nozzle; 58. Rotating motor; 59. Rotating gear;

[0059] 6. Floating press fitting device; 61. Floating press fitting head; 611. Floating press fitting base; 612. Movable cavity; 613. Press fitting elastic element; 614. Floating pressure bar; 615. Floating press mold; 62. Floating press fitting frame; 63. Floating press fitting drive module;

[0060] 7. Rotary ring mounting assembly; 71. Rotary ring mounting frame; 72. Rotary ring hopper; 73. Rotary ring feeding drive module; 74. Rotary ring mounting components; 741. Rotary ring mounting base plate; 742. Rotary ring pressing motor; 743. Rotary ring pressure rod; 744. Rotary ring gripping rod; 75. Rotary ring protection structure; 751. Guide sleeve; 752. Guide sleeve robot arm; 753. Protection drive module; 76. Rotary ring lubricant tank; Detailed Implementation

[0061] The present patent application will be further described below with reference to specific embodiments:

[0062] The pump head assembly equipment of the present invention is used to automate the assembly of centrifugal pumps, thereby solving the problems of low efficiency and easy damage to oil seals caused by manual assembly in the prior art. The equipment uses a transfer device 2 to sequentially transfer the pump casing to each assembly station, automatically completing processes such as oil seal assembly, gasket installation, snap ring installation, and O-ring installation.

[0063] A centrifugal pump mainly consists of a casing, a rotor and stator mounted inside the casing, a bracket mounted outside the rotor, and oil seals, gaskets, retaining rings, and O-rings mounted inside the bracket. The oil seal comprises a stationary ring and a rotating ring. The stationary ring is a fixed sealing ring, and the rotating ring is a rotating sealing ring; the two work together to achieve the sealing function. The stationary ring is usually made of wear-resistant materials such as ceramic or graphite, while the rotating ring has a rubber layer on its inner side that contacts the rotor to provide the elastic contact pressure required for sealing.

[0064] The pump head assembly equipment of the present invention includes a main frame 1, and a transfer device 2, a bracket assembly device 3, an oil seal feeding device, and an auxiliary component assembly device 4, which are fixedly installed on the main frame 1. The main frame 1 is the supporting foundation of the entire equipment, adopts a frame structure, is welded from profiles, and has sufficient rigidity and stability to ensure the positional accuracy of each assembly device during operation.

[0065] like Figure 1As shown, the transfer device 2 is provided with several loading positions 21 at intervals. Each loading position 21 is used to position and place the pump casing of the centrifugal pump and the bracket to be assembled. The loading position 21 is provided with a positioning fixture, which includes a positioning groove adapted to the shape of the pump casing and a clamping mechanism. The pump casing is fixed in the positioning groove by driving the clamping block through a clamping cylinder. The transfer device 2 can drive the pump casing and the bracket to be assembled on each loading position 21 to the working position of the bracket assembly device 3, the oil seal feeding device, and the auxiliary parts assembly device 4 in sequence. The transfer device 2 can adopt a turntable structure or a linear conveying structure. In this embodiment, a turntable structure is adopted. The transfer device 2 includes a turntable and a divider that drives the turntable to rotate intermittently. The divider is connected to a motor drive. The control system controls the motor to drive the turntable to rotate intermittently at a set angle and rhythm, so that each loading position 21 arrives at each assembly position in sequence.

[0066] The bracket assembly device 3 is used to press and position the bracket to be assembled against the rotor inside the pump housing, and to tighten and fix the screws on the edge of the bracket. The bracket assembly device 3 includes a stamping device 31 for stamping the bracket and a screw-locking device 32 for locking the screws. The stamping device 31 includes a stamping drive and a stamping head. The stamping drive can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder. In this embodiment, a pneumatic cylinder is used as the stamping drive. The stamping head is installed at the output end of the stamping drive. The end face shape of the stamping head is adapted to the contact surface of the bracket. The stamping drive drives the stamping head to descend, pressing the bracket against the housing. The screw-locking device 32 includes a screw-locking drive and a screwdriver bit. The screw-locking drive is an electric screwdriver or a pneumatic screwdriver. The screwdriver bit matches the head shape of the screw. The screwdriver drive drives the screwdriver bit to rotate, screwing the screw into the threaded holes of the bracket and the housing, thus achieving a fixed connection between the bracket and the housing. The screw-locking device 32 can be equipped with multiple screwdriver bits to simultaneously tighten multiple screws, thereby improving assembly efficiency.

[0067] like Figure 3 , 4As shown, the oil seal feeding device is used to sequentially assemble the stationary ring and rotating ring of the oil seal onto the rotor. The oil seal feeding device includes a stationary ring feeding assembly 5 and a floating pressing device 6. The stationary ring feeding assembly 5 is used to grab and transport the stationary ring to the preset assembly position on the rotor. The stationary ring feeding assembly 5 includes a stationary ring feeding frame 51, a stationary ring hopper 52, a stationary ring lubricant hopper 53, and a stationary ring transport claw 54. The stationary ring hopper 52 and the stationary ring lubricant hopper 53 are both fixedly mounted on the stationary ring feeding frame 51. The stationary ring hopper 52 is used to hold the stationary ring to be assembled. The stationary ring hopper 52 can adopt a vibratory feeder or a hopper-type structure. This patent adopts a hopper-type structure, which has several trays on it, and several stationary rings are placed in the trays. The stationary ring lubricant hopper 53 is used to store lubricant. The lubricant can be silicone oil, alcohol, or other suitable lubricants, used to lubricate the stationary ring before assembly to reduce assembly friction and protect the sealing surface. The stationary ring transport gripper 54 is connected to the stationary ring loading drive module 55. The stationary ring loading drive module 55 can be a multi-axis manipulator or a slide rail slider structure. In this embodiment, a dual-axis slide rail slider structure is used, including an X-axis slide rail and a Z-axis slide rail. Each slide rail is equipped with a slider and a drive motor. The rotary motion is converted into linear motion through a screw and nut mechanism, which drives the slider to move along the slide rail. The stationary ring loading drive module 55 drives the stationary ring transport gripper 54 to complete the following actions in sequence: grabbing the stationary ring from the stationary ring hopper 52, sliding it to the stationary ring lubricant hopper 53 to immerse the stationary ring in lubricant, and then transferring it to the rotor above the loading position 21 and placing the stationary ring on the rotor. The stationary ring transport gripper 54 is a pneumatic gripper or an electric gripper. The gripper has an arc-shaped groove that matches the inner ring of the stationary ring, which is used to insert into the inner ring of the stationary ring and then expand outward to stably clamp the stationary ring.

[0068] To further improve the assembly quality of the stationary ring, a rotating ring 56 is rotatably mounted on the stationary ring transport claw 54. Several nozzles 57 are sequentially connected circumferentially to the rotating ring 56, surrounding the outside of the stationary ring transport claw 54. The nozzles 57 are used to spray gas towards the stationary ring or rotor's stationary ring mounting position during the stationary ring transport process. The nozzles 57 are connected to an air source via air pipes, and solenoid valves on the air pipes control the airflow. By spraying compressed air through the nozzles 57, dust and impurities at the stationary ring and rotor mounting positions can be blown away, ensuring the cleanliness of the assembly surfaces. Simultaneously, the stationary ring can be pre-cooled, reducing the impact of thermal expansion on assembly accuracy. Figure 4 , 5 As shown, the rotating ring 56 is rotatably mounted on the outer edge of the stationary ring transport claw 54 via a bearing. The outer edge of the rotating ring 56 is provided with a toothed surface. A rotating motor 58 is provided on the Z-axis slide rail structure on one side of the rotating ring 56. The rotating motor 58 drives a rotating gear 59. The rotating gear 59 drives the rotating ring 56 to rotate forward and backward at a specified angle to uniformly spray gas.

[0069] like Figure 6 ,7 As shown, the floating press-fitting device 6 is equipped with a floating press-fitting head 61. The floating press-fitting device 6 uses the floating press-fitting head 61 to perform floating press-fitting on the stationary ring at the preset assembly position of the rotor to correct the assembly misalignment of the stationary ring and achieve precise press-fitting of the stationary ring and the rotor. The floating press-fitting device 6 includes a stationary ring floating press-fitting frame 62, a floating press-fitting drive module 63, and a floating press-fitting head 61. The floating press-fitting drive module 63 is mounted on the stationary ring floating press-fitting frame 62 and is used to drive the floating press-fitting head 61 to move closer to or away from the rotor to perform the press-fitting action. The floating press-fitting drive module 63 can be a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. In this embodiment, a servo electric cylinder is used. The servo motor drives the lead screw to rotate, which in turn drives the nut and the slider connected to the nut to move along the guide rod, thereby achieving precise position control of the floating press-fitting head 61. The floating press head 61 includes a floating press seat 611, within which a trapezoidal movable cavity 612 is formed. The lower part of the movable cavity 612 is dish-shaped. A press elastic element 613 is assembled within the movable cavity 612. The press elastic element 613 can be a spring or a nitrogen spring. One end of the press elastic element 613 abuts against the bottom of the movable cavity 612, and the other end is connected to a floating pressure rod 614. Specifically, the floating pressure rod 614 has a receiving slot for accommodating the press elastic element 613. One end of the floating pressure rod 614 is confined within the movable cavity 612 and can move towards the movable cavity 612. A floating pressure mold 615 is provided along the outer edge of the floating pressure rod 614. The floating pressure mold 615 is used for abutting and positioning with the bracket, and simultaneously applies a stable floating press force axially towards the stationary ring. (See details below.) Figure 7 In this patent, the upper end of the floating pressure rod 614 is generally disc-shaped, and its entire body is located within the movable cavity 612, adapting to the shape of the movable cavity 612. This allows the floating pressure rod 614 to be offset 360 degrees within the movable cavity 612 for pressing. Through the floating design of the floating pressing head 61, it can automatically adapt to the positional deviation of the stationary ring during the pressing process. When the stationary ring is offset, the floating pressure rod 614 will automatically adjust its posture according to the force applied, ensuring that the pressing force is evenly applied to the stationary ring, preventing damage or breakage of the stationary ring due to uneven force. Furthermore, the outer edge of the floating mold 615 is also provided with a corresponding rotating ring 56 and nozzle 57 structure for cleaning debris from the workpiece surface.

[0070] Combination Figure 8 , 9As shown in Figures 10 and 11, the oil seal feeding device also includes a rotating ring mounting assembly 7. The rotating ring mounting assembly 7 includes a rotating ring mounting frame 71, on which a rotating ring hopper 72, a rotating ring lubricant reservoir 76, and a rotating ring feeding drive module 73 are mounted. The rotating ring feeding drive module 73 drives a rotating ring mounting component 74, which in turn drives the rotating ring mounting component 74 to perform the following actions sequentially: grabbing the rotating ring from the rotating ring hopper 72, sliding it to the rotating ring lubricant reservoir 76 to immerse the rotating ring in lubricant, and then transferring it to the rotor corresponding to the loading position 21 and placing the rotating ring on the rotor for pressing. The structures of the rotating ring hopper 72 and the rotating ring lubricant reservoir 76 are similar to those of the stationary ring hopper 52 and the stationary ring lubricant reservoir 53, respectively used to accommodate the rotating ring to be assembled and to store lubricant. The moving ring feeding drive module 73 can adopt a multi-axis robot or a slide rail slider structure. In this embodiment, a dual-axis slide rail slider structure similar to that of the stationary ring feeding drive module 55 is adopted.

[0071] like Figure 10 , 11 As shown, the rotating ring mounting component 74 includes a rotating ring mounting base plate 741, a rotating ring pressing motor 742, and a rotating ring pressing rod 743. The rotating ring mounting base plate 741 is connected to the rotating ring feeding drive module 73. The rotating ring pressing motor 742 slides and drives the rotating ring pressing plate, and the rotating ring pressing rod 743 is fixed on the rotating ring pressing plate. The rotating ring pressing rod 743 is hollow, and a rotating ring gripping rod 744 is slidably provided inside the rotating ring pressing rod 743. The rotating ring gripping rod 744 is used to extend and insert into the rotating ring to grip the rotating ring, and after the rotating ring is transported above the rotor, it retracts to make it fall onto the rotor. The rotating ring pressing rod 743 is used to press the rotating ring onto the rotor after it falls onto the rotor. The end of the rotating ring gripping rod 744 can be made of rubber material, and it is inserted into the inner ring of the rotating ring to achieve an interference fit with the inner ring of the rotating ring, thereby achieving the gripping of the rotating ring. The rotating ring pressing motor 742 is a servo motor. It drives the rotating ring pressing plate and the rotating ring pressing rod 743 to descend through the screw nut mechanism, applying pressing force to the rotating ring. When the rotating ring pressing rod 743 and the rotating ring gripping rod 744 move to the rotor, the rotating ring pressing motor 742 works to press down, so that the rotating ring pressing rod 743 acts on the rotating ring and presses it into the installation position of the rotor.

[0072] To prevent the connecting key at the rotor end from rubbing against the rubber layer inside the rotating ring during installation, which could cause the rubber layer to break, a rotating ring protection structure 75 is provided on the rotating ring mounting frame 71. This structure includes a guide sleeve 751, a guide sleeve manipulator 752 that grips the guide sleeve 751, and a protection drive module 753 that drives the guide sleeve manipulator 752. This module is used to fit the guide sleeve 751 onto the rotor before the rotating ring is moved to the loading position 21. The guide sleeve 751 is cylindrical, with an inner diameter slightly larger than the outer diameter of the rotor. The lower end face of the guide sleeve 751 has a chamfer for easy fitting onto the rotor. The guide sleeve manipulator 752 uses pneumatic grippers, and the protection drive module 753 uses a cylinder structure. The guide sleeve manipulator 752 is moved by the protection drive module 753. Under normal conditions, the pneumatic grippers directly grip the guide sleeve 751. Before the rotating ring is installed, the guide sleeve 751 is driven to be fitted onto the rotor. The guide sleeve 751 can cover the connecting key at the end of the rotor, so that the rotating ring slides along the outer wall of the guide sleeve 751 during the installation process, avoiding direct contact with the connecting key, thereby protecting the rubber layer on the inner side of the rotating ring. After the rotating ring is installed, the pneumatic grippers pick up the guide sleeve 751 again and remove it.

[0073] like Figure 12-15 As shown, the auxiliary component assembly device 4 is used to sequentially assemble the gasket, retaining ring, and O-ring to the corresponding assembly positions on the centrifugal pump. The auxiliary component assembly device 4 includes a gasket conveying assembly, a retaining ring conveying assembly, an O-ring assembly assembly, and an auxiliary component assembly frame 43.

[0074] The gasket conveying assembly includes a gasket conveying vibratory feeder 41, a gasket loading seat 42, and a gasket gripper 44. The snap ring conveying assembly includes a snap ring conveying vibratory feeder 45, a snap ring loading seat 46, and a snap ring gripper 47. The gasket conveying vibratory feeder 41 and the snap ring conveying vibratory feeder 45 are standard vibratory feeders. Vibration causes the gaskets and snap rings to be arranged in an orderly manner and conveyed along the discharge track to the gasket loading seat 42 and the snap ring loading seat 46. The gasket loading seat 42 and the snap ring loading seat 46 are respectively provided with positioning grooves adapted to the shapes of the gaskets and snap rings for receiving and positioning the gaskets and snap rings. An auxiliary component assembly sliding module 48 is provided on the auxiliary component assembly frame 43. The auxiliary component assembly sliding module 48 adopts a slide rail slider structure, including a horizontal slide rail and two vertical cylinders. The horizontal slide rail is fixed on the auxiliary component assembly frame 43, and the vertical cylinders are fixed on a connecting plate and slide on the horizontal slide rail. The gasket gripper 44 and the snap ring gripper 47 are installed on the vertical cylinders. The auxiliary component assembly sliding module 48 drives the snap ring gripper 47 and the gasket gripper 44. The gasket conveying vibratory feeder 41 and the snap ring conveying vibratory feeder 45 are used to convey the gaskets and snap rings to the gasket loading seat 42 and the snap ring loading seat 46, respectively. Then, the gasket gripper 44 and the snap ring gripper 47 grip the gaskets and snap rings and place them on the loading position 21 for assembly. In this patent, the gasket gripper 44 adopts a pneumatic gripper structure for direct gripping.

[0075] The outlet of the vibratory feeder 45 with a snap ring is equipped with a snap ring guide rail 451 adapted to the shape of the snap ring. The vibratory feeder drives the snap ring and causes it to be embedded in the snap ring guide rail 451 for transport. The snap ring guide rail 451 is arc-shaped, and its cross-sectional shape matches the cross-sectional shape of the snap ring, allowing the snap ring to move orderly along the guide rail under vibration. Figure 12-14 As shown, the circlip loading seat 46 is provided with a support groove 461, and a support rod 462 is provided in the support groove 461. One end of the support groove 461 is provided with a first material port 463 that connects to the circlip guide rail 451, and the other end of the support groove 461 is provided with a second material port 464. The support rod 462 is used to push the circlip located in the first material port 463 to the second material port 464, and the end of the support rod 462 presses against one end of the circlip to make the circlip located in the second material port 464 in an open state.

[0076] For details, please refer to the following: Figure 15In fact, the snap ring feeding seat 46 in this patent includes a snap ring feeding base plate 465 fixed on the auxiliary component assembly frame 43. The bottom of the snap ring feeding base plate 465 is also provided with a pad. The two are fixed on the auxiliary component assembly frame 43 by fasteners. The snap ring feeding base plate 465 is provided with the material support groove 461. The material support chute 461 consists of two parts: a support rod sliding part 4611 for sliding the material support rod 462, and a retaining spring sliding part 4612 located on top of the support rod sliding part 4611 for sliding the retaining spring. Specifically, the material support chute 461 has two extension blocks 4613 inside, which form the support rod sliding part 4611 with an inverted "T" shaped cross section. The retaining spring sliding part 4612 is formed on the top of the extension block 4613. The retaining spring can be placed on the extension block 4613 and supported and slid through it. At the same time, the extension block 4613 at the second material outlet 464 expands outward to form an annular support boss 4614 adapted to the retaining spring. Correspondingly, the cross-section of the support slide rod 462 is an inverted "T" shape. The support slide rod 462 is driven by a cylinder, and a tapered support head 4621 is provided at the end of the support slide rod 462. The tapered support head 4621 is located in the retaining spring sliding part 4612. The retaining spring is first located on the annular support boss 4614 at the second feed port 464 along the retaining spring guide rail 451. The tapered support head 4621 is inserted into the open end of the retaining spring, pushing the retaining spring to move and opening it, so that the opened retaining spring is located at the second feed port 464. The structure of the snap ring gripper 47 in this patent application is similar to that of the rotating ring pressure rod 743 and rotating ring gripper 744 in this patent application. Specifically, it includes a snap ring pressure rod and a snap ring gripper. When the snap ring gripper 47 is located in the second feed port 464, the snap ring gripper is located in the second feed port 464. The material support slide rod 462 is reset to make the snap ring in a closed state and locked on the snap ring gripper 47. Then it is transported to the loading position 21 and pushed into it by the snap ring pressure rod for pressing, so that the snap ring is installed in the snap ring groove of the rotor.

[0077] In addition, a retaining spring sealing plate 466 is provided on the retaining spring feeding base plate 465. The sealing plate is used to close the upper end of the material support groove 461, thereby closing the upper end of the material support groove 461 and preventing the retaining spring from falling off.

[0078] The O-ring assembly assembly is used to install O-rings. The O-ring assembly assembly includes an O-ring conveying vibratory plate, an O-ring feeding seat, an O-ring gripper, and an O-ring opening member. Its specific structure can be referred to the contents of Chinese Utility Model CN202323083099.X. By fitting the O-ring onto the opening member, the O-ring is opened, and then moved to the assembly position to fit the O-ring into the O-ring groove of the rotor.

[0079] The workflow of this pump head assembly equipment is as follows: First, the casing, stator, rotor, and bracket are manually placed on the loading position 21, where the positioning fixtures fix the pump casing. The transfer device 2 moves the loading position 21 to the bracket assembly device 3. The stamping device 31 of the bracket assembly device 3 presses the bracket onto the casing, and the screw-locking device 32 tightens the screws, achieving a fixed connection between the bracket and the casing. The transfer device 2 continues to move the loading position 21 to the oil seal feeding device. The stationary ring feeding assembly 5 grabs the stationary ring from the stationary ring hopper 52, wets it with lubricant, and places it on the rotor. The floating pressing head 61 of the floating pressing device 6 performs floating pressing on the stationary ring, correcting the assembly offset of the stationary ring and achieving precise pressing between the stationary ring and the rotor. The rotating ring installation assembly 7 grabs the rotating ring from the rotating ring hopper 72, wets it with lubricant, and places it on the guide sleeve 751. Under protection, the rotating ring is installed on the rotor, and the rotating ring pressure rod 743 presses the rotating ring to achieve the assembly of the rotating ring and the rotor. The transfer device 2 continues to move the loading position 21 to the auxiliary component assembly device 4. The gasket conveying assembly conveys the gasket to the gasket loading seat 42, and the gasket gripper 44 grips the gasket and installs it into the gasket groove of the rotor. The snap ring conveying assembly conveys the snap ring to the snap ring loading seat 46, the support slide rod 462 opens the snap ring, and the snap ring gripper 47 grips the snap ring and installs it into the snap ring groove of the rotor. The O-ring assembly assembly conveys the O-ring to the O-ring loading seat, the O-ring opening component opens the O-ring, and the O-ring gripper grips the O-ring and installs it into the O-ring groove of the rotor. After all assembly processes are completed, the transfer device 2 moves the loading position 21 to the unloading position, and the assembled centrifugal pump is removed manually or by a robot, completing one work cycle.

[0080] This pump head assembly equipment achieves automatic connection of each process through the transfer device 2, automatic pressing and locking of the bracket through the bracket assembly device 3, automatic feeding, lubrication and pressing of the oil seal stationary and rotating rings through the oil seal feeding device, and automatic assembly of gaskets, snap rings and O-rings through the auxiliary component assembly device 4. In particular, the floating pressing head 61 of the floating pressing device 6 can automatically correct the assembly misalignment of the stationary ring during the pressing process, avoiding damage or breakage of the stationary ring due to uneven force; the guide sleeve 751 of the rotating ring protection structure 75 can prevent the connecting key at the rotor end from rubbing against the rubber layer on the inner side of the rotating ring, protecting the integrity of the rubber layer and ensuring the sealing performance of the oil seal. This equipment realizes fully automatic assembly of centrifugal pumps, greatly improving production efficiency, reducing labor costs, and ensuring the stability and consistency of product quality.

[0081] The aforementioned module can be either a slide rail and slider structure or a slide plate and guide rod structure. The slide rail and slider structure includes a slide rail and a slider. The slide rail is fixed to the frame or mounting base. The slider engages with the slide rail via rolling or sliding elements, allowing it to reciprocate along the slide rail. The slider is connected to a drive component, which moves the slider. The slide plate and guide rod structure includes a guide rod and a slide plate. The guide rod is fixed to the frame or mounting base. The slide plate engages with the guide rod via a guide sleeve 751, allowing it to reciprocate along the guide rod. The slide plate is connected to a drive component, which moves the slide plate. Both structures can provide guidance and support for linear motion. The appropriate structural form can be selected based on the specific application scenario and space constraints. The drive component can be a cylinder, hydraulic cylinder, electric cylinder, or motor screw mechanism. The control system controls the movement of the drive component, achieving precise position and speed control of each component.

[0082] This embodiment is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made to the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of the present invention. When an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or may have an intervening element present simultaneously. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element through an intervening element. Additionally, descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. The technical solutions of the various embodiments can be combined with each other, but must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0083] The above embodiments are merely preferred embodiments of this patent application and are not intended to limit the scope of protection of this patent application. Therefore, all equivalent changes made to the structure, shape, and principle of this patent application should be covered within the scope of protection of this patent application.

[0084] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this patent application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this patent application, should still fall within the scope of the technical content disclosed in this patent application. Furthermore, the terms such as "above," "below," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this patent application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this patent application.

[0085] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0086] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. Pump head assembly equipment, characterized in that: It includes a main frame (1), and a transfer device (2), a bracket assembly device (3), an oil seal feeding device and an auxiliary component assembly device (4) fixedly installed on the main frame (1); The transfer device (2) is provided with several loading positions (21) at intervals. Each loading position (21) is used to position and place the pump casing of the centrifugal pump and the bracket to be assembled. The transfer device (2) can drive the pump casing and the bracket to be assembled on each loading position (21) to be sequentially transferred to the working position of the bracket assembly device (3), the oil seal feeding device and the auxiliary parts assembly device (4). The bracket assembly device (3) is used to press and position the bracket to be assembled with the rotor inside the pump casing, and to lock and fix the screws on the edge of the bracket. The oil seal feeding device is used to assemble the stationary ring and the rotating ring of the oil seal onto the rotor in sequence; The auxiliary component assembly device (4) is used to assemble the gasket, snap ring and O-ring into the corresponding assembly position of the centrifugal pump in sequence; The oil seal feeding device includes a floating press-fitting device; The floating press fitting device includes a static ring floating press fitting frame (62), a floating press fitting drive module (63), and a floating press fitting head (61); The floating press-fitting drive module (63) is installed on the stationary ring floating press-fitting frame (62) and is used to drive the floating press-fitting head (61) to move closer to or away from the rotor to perform the press-fitting action; The floating press head (61) includes a floating press seat (611), which has a movable cavity (612) formed inside. A press elastic element (613) is assembled inside the movable cavity (612). One end of the press elastic element (613) abuts against the bottom of the movable cavity (612), and the other end is connected to a floating press rod (614). One end of the floating press rod (614) is limited to the movable cavity (612) and can move into the movable cavity (612). A floating press mold (615) is provided on the outer edge of the floating press rod (614). The floating press mold (615) is used to abut against and position the bracket to be assembled, and at the same time applies a stable floating press force to the stationary ring along the axial direction.

2. The pump head assembly equipment according to claim 1, characterized in that: The oil seal feeding device includes a stationary ring feeding assembly (5) and the floating press-fitting device; The stationary ring feeding assembly (5) is used to grab and transport the stationary ring to the preset assembly position of the rotor; The floating press-fitting device uses the floating press-fitting head (61) to perform floating press-fitting on the stationary ring at the preset assembly position of the rotor, so as to correct the assembly offset of the stationary ring and achieve precise press-fitting of the stationary ring and the rotor.

3. The pump head assembly equipment according to claim 2, characterized in that, The stationary ring feeding assembly (5) includes: a stationary ring feeding frame (51), a stationary ring hopper (52), a stationary ring lubricant hopper (53), and a stationary ring transport gripper (54); The stationary ring hopper (52) and the stationary ring lubricant hopper (53) are both fixedly installed on the stationary ring feeding frame (51). The stationary ring hopper (52) is used to hold the stationary ring to be assembled, and the stationary ring lubricant hopper (53) is used to store lubricant. The stationary ring transport claw (54) is connected to the stationary ring loading drive module (55). The stationary ring loading drive module (55) drives the stationary ring transport claw (54) to complete the following actions in sequence: grab the stationary ring from the stationary ring hopper (52), slide it to the stationary ring lubricant hopper (53) to wet the stationary ring with lubricant, and then transfer it to the rotor above the loading position (21) and place the stationary ring on the rotor.

4. The pump head assembly equipment according to claim 3, characterized in that: A rotating ring (56) is rotatably mounted on the stationary ring transport claw (54). A plurality of nozzles (57) are sequentially connected along the circumference of the rotating ring (56). Each nozzle (57) surrounds the outside of the stationary ring transport claw (54). The nozzles (57) are used to spray gas toward the stationary ring or the stationary ring mounting position of the rotor during the process of the stationary ring transport claw (54) transporting the stationary ring.

5. The pump head assembly equipment according to any one of claims 1-4, characterized in that, The oil seal feeding device also includes a rotating ring mounting assembly (7), which includes a rotating ring mounting frame (71). The rotating ring mounting frame is provided with a rotating ring hopper (72), a rotating ring lubricant hopper (76), and a rotating ring feeding drive module (73). The rotating ring feeding drive module (73) drives a rotating ring mounting component (74). The rotating ring feeding drive module (73) drives the rotating ring mounting component (74) to complete the following actions in sequence: grab the rotating ring from the rotating ring hopper (72), slide it to the rotating ring lubricant hopper (76) to immerse the rotating ring in lubricant, and then move it to the rotor above the loading position (21) and place the rotating ring on the rotor for pressing.

6. The pump head assembly equipment according to claim 5, characterized in that, The dynamic ring mounting component (74) includes: A rotating ring mounting base plate (741) is connected to the rotating ring feeding drive module (73); The rotating ring press motor (742) slides and drives the rotating ring press plate; A rotating ring pressure bar (743) is fixed on the rotating ring pressing plate. The rotating ring pressure bar (743) is hollow. A rotating ring gripping bar (744) is slidably provided inside the rotating ring pressure bar (743). The rotating ring gripping bar (744) is used to extend and insert into the rotating ring to grip the rotating ring and retract after the rotating ring is transported above the rotor so that it falls onto the rotor. The rotating ring pressure bar (743) is used to press the rotating ring on the rotor after the rotating ring falls onto the rotor.

7. The pump head assembly equipment according to claim 5, characterized in that: The rotating ring mounting frame (71) is provided with a rotating ring protection structure (75), which includes a guide sleeve (751), a guide sleeve manipulator (752) that grips the guide sleeve (751), and a protection drive module (753) that drives the guide sleeve manipulator (752) to move, for mounting the guide sleeve (751) on the rotor before the rotating ring is transferred to the loading position (21).

8. The pump head assembly equipment according to claim 1, characterized in that: The auxiliary component assembly device (4) includes a gasket conveying assembly, a snap ring conveying assembly, and an auxiliary component assembly frame (43). The gasket conveying assembly includes a gasket conveying vibratory plate (41), a gasket loading seat (42), and a gasket gripper (44). The snap ring conveying assembly includes a snap ring conveying vibratory plate (45), a snap ring loading seat (46), and a snap ring gripper (47). The auxiliary component assembly frame (43) is equipped with an auxiliary component assembly sliding module (48). The auxiliary component assembly sliding module (48) drives the snap ring gripper (47) and the pad gripper (44). The pad conveying vibratory plate (41) and the snap ring conveying vibratory plate (45) are used to convey the pad and snap ring to the pad loading seat (42) and the snap ring loading seat (46) respectively. Then, the pad gripper (44) and the snap ring gripper (47) grip the pad and the snap ring to the loading position (21) for assembly.

9. The pump head assembly equipment according to claim 8, characterized in that: The outlet of the circlip conveying vibratory feeder (45) is provided with a circlip guide rail (451) adapted to the shape of the circlip. The vibratory feeder drives the circlip and causes the circlip to be embedded in the circlip guide rail (451) for conveying. The circlip loading seat (46) is provided with a support groove (461), and a support rod (462) is provided in the support groove (461). One end of the support groove (461) is provided with a first material port (463) that connects to the circlip guide rail (451), and the other end of the support groove (461) is provided with a second material port (464). The support rod (462) is used to push the circlip located in the first material port (463) to the second material port (464), and the end of the support rod (462) presses against one end of the circlip to make the circlip located in the second material port (464) open. When the circlip gripper (47) is located in the second material port (464), the support rod (462) resets to make the circlip close and located on the circlip gripper (47).

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