A pump body rotor preloading apparatus

Abstract

A pump rotor preloading device, comprising a feeding mechanism, a loading mechanism, a positioning mechanism and a pressing mechanism; a plurality of rotors are arranged on the feeding mechanism, the positioning mechanism is arranged at the end of the feeding mechanism, the loading mechanism is located between the two, and is responsible for carrying the rotor to the positioning mechanism; the positioning mechanism is provided with a pushing part, and horizontal movement abuts against the rotor to achieve preliminary positioning; the rotor shaft hole is vertical; the pressing mechanism is located on one side of the positioning mechanism, and has a pressing station and a pressing module; the vertical locating rod of the pressing module can rotate around the axis, and the end of the locating rod is provided with a positioning block; the pump body is fixed on the pressing station, the crankshaft of the pump body is vertical, and the end of the crankshaft is provided with a positioning groove matched with the positioning block; during pressing, the pressing module moves horizontally and vertically, carries the rotor to above the pump body, the locating rod passes through the rotor shaft hole and abuts against the crankshaft, rotation makes the positioning block embedded in the positioning groove and drives the crankshaft to rotate synchronously, and finally the pressing module vertically pushes the rotor, so that the rotor is sleeved on the crankshaft through the locating rod. The utility model improves assembly precision and production efficiency, and reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of pump body production and assembly technology, and in particular to a pump body rotor pre-assembly equipment. Background Technology

[0002] In the pump body manufacturing process, the assembly of the pump rotor is a crucial step affecting the pump's performance and quality. Traditional pump rotor assembly methods largely rely on manual operation, requiring workers to manually align and install the rotor with the pump body's crankshaft. Because the rotor and crankshaft require high precision, manual alignment is not only inefficient but also difficult to guarantee accuracy, easily affecting the pump's service life and performance stability.

[0003] With the development of automation technology, some equipment for assembling pump body rotors has emerged on the market, but most of these devices have certain limitations. Some devices can only achieve simple rotor handling and preliminary positioning, and cannot perform precise coaxial positioning of the rotor and crankshaft during the assembly process. The assembly accuracy still cannot meet the production requirements of high-quality pump bodies. Utility Model Content

[0004] The purpose of this invention is to provide a pump rotor pre-assembly device that can improve the installation efficiency and accuracy of the rotor and ensure product quality.

[0005] To achieve the above objectives, the solution of this utility model is as follows:

[0006] A pump rotor pre-assembly device includes a feeding mechanism, a loading mechanism, a positioning mechanism, and a pressing mechanism;

[0007] Several rotors are arranged on the feeding mechanism. The positioning mechanism is located at the end of the feeding mechanism. The loading mechanism is located between the feeding mechanism and the positioning mechanism and is used to transport the rotors to the positioning mechanism. The positioning mechanism is provided with a pushing part. The pushing part moves horizontally and abuts against the rotor for the initial positioning of the rotor. The shaft hole of the rotor is set vertically.

[0008] The pressing mechanism is located on one side of the positioning mechanism. The pressing mechanism has a pressing station and a pressing module. The pressing module has a vertically rotatable positioning rod that can rotate around its own axis. The end of the positioning rod has a positioning block. The pump body is fixedly placed on the pressing station. The pump body has a crankshaft in the axial direction. The crankshaft is vertically oriented and the end of the crankshaft has a positioning groove that matches the positioning block.

[0009] During the press-fitting operation, the horizontal and vertical movements of the press-fitting module between the positioning mechanism and the press-fitting station transport the rotor, which has completed its initial positioning on the positioning mechanism, to the pump body above the press-fitting station. The positioning rod passes through the shaft hole of the rotor and abuts against the crankshaft coaxially. The positioning rod rotates around its own axis, causing the positioning block to embed into the positioning groove of the crankshaft and drive the crankshaft to rotate synchronously. The vertical movement of the press-fitting module pushes the rotor to be sleeved on the crankshaft through the positioning rod.

[0010] In a preferred embodiment, the feeding mechanism includes a conveyor frame, a flap, a chain, and a conveyor motor;

[0011] Two chains are set on the conveyor frame along the length of the conveyor frame. The conveyor motor is set on the conveyor frame and connected to the chain drive. The two ends of multiple flaps are respectively attached to the two chains to form a rotary conveyor belt. Several rotors are arranged on the flaps.

[0012] The preferred embodiment also includes a first loaded optical fiber, a flip-plate positioning cylinder, and a stop switch;

[0013] The first loaded optical fiber, the flip-plate positioning cylinder, and the stop switch are respectively installed on the conveyor frame at the end of the rotary conveyor belt along the conveying direction of the rotary conveyor belt. The two ends of the flip-plate overlapping the chain are respectively provided with positioning grooves. The output end of the flip-plate positioning cylinder is provided with a positioning protrusion. The flip-plate is provided with a positioning screw at the position corresponding to the stop switch. When the stop switch detects the positioning screw of the flip-plate and is triggered, the conveyor motor stops working. When the first loaded optical fiber detects the rotor of the flip-plate and is triggered, the flip-plate positioning cylinder drives the positioning protrusion to embed into the positioning groove of the flip-plate to fix the flip-plate.

[0014] In a preferred embodiment, the feeding mechanism includes a gantry frame, a first slide rail, a first lead screw, a first material transfer motor, and a clamping module;

[0015] The gantry frame is fixedly installed between the feeding mechanism and the positioning mechanism. The first slide rail, the first lead screw, and the first transfer motor are installed on the crossbeam of the gantry frame. Several clamping modules are slidably installed on the first slide rail and are connected to the first lead screw via transmission. The output end of the first transfer motor is connected to the first lead screw via transmission.

[0016] In a preferred embodiment, the clamping module includes a drive cylinder, a first clamping plate, and a first clamping cylinder;

[0017] The drive cylinder is slidably mounted on the first slide rail and is connected to the first lead screw. The output end of the drive cylinder is vertically mounted. The first clamping cylinder is fixedly mounted on the output end of the drive cylinder. The two output ends of the first clamping cylinder are horizontally mounted. The two first clamping plates are vertically mounted. The upper ends of the two first clamping plates are respectively fixed to the two output ends of the first clamping cylinder. The lower ends of the two first clamping plates are used to clamp the rotor.

[0018] In a preferred embodiment, the positioning mechanism includes a support base, a second slide rail, a material transfer cylinder, a first positioning frame, a first positioning cylinder, and a second loaded optical fiber.

[0019] The support base is located at the end of the feeding mechanism, the second slide rail and the material transfer cylinder are located on the support base, and the first positioning frame is slidably located on the second slide rail and connected to the output end of the material transfer cylinder.

[0020] The first positioning frame is equipped with a material storage station and a positioning station. The second material-loaded optical fiber is respectively set at the material storage station and the positioning station. The first positioning cylinder is fixedly set at the positioning station. The output end of the first positioning cylinder is set horizontally. The pushing part is the first positioning push block. The first positioning push block is set at the output end of the first positioning cylinder. The rotor is placed at the positioning station. A balance block is set at the bottom of the rotor. The first positioning cylinder drives the first positioning push block to move horizontally and abut against the balance block at the bottom of the rotor to perform preliminary positioning of the rotor.

[0021] In a preferred embodiment, the pressing mechanism further includes a pressing frame, a support plate, a pump body positioning seat, and a crankshaft positioning module;

[0022] The pressing frame is located on one side of the positioning mechanism, and the support plate is fixedly located in the middle of the pressing frame to form the pressing station. The pump body positioning seat is fixedly located on the support plate for fixing the pump body. The crankshaft positioning module is fixedly located in the middle of the pressing frame for positioning the crankshaft of the pump body. The pressing module is slidably located on the upper part of the pressing frame for transporting the rotor that has completed the initial positioning on the positioning mechanism to the pump body above the pressing station through horizontal and vertical movements.

[0023] In a preferred embodiment, the press-fitting module includes a servo electric cylinder, a connecting frame, a press head, a rotary motor, a second clamping cylinder, and a second clamping plate.

[0024] The servo electric cylinder is slidably mounted on the upper part of the pressing frame for horizontal and vertical movement on the upper part of the pressing frame. The output end of the servo electric cylinder is vertically downward and is provided with a connecting frame. The positioning rod is vertically mounted on the connecting frame. The rotary motor is mounted on the upper part of the connecting frame and is connected to the upper part of the positioning rod for driving the positioning rod to rotate around its own axis. The pressure head is slidably mounted on the lower part of the positioning rod and is located above the positioning block.

[0025] The second clamping cylinder is fixedly installed at the lower part of the connecting frame. The two output ends of the second clamping cylinder are horizontally set. The upper ends of the two second clamping plates are respectively fixed to the two output ends of the second clamping cylinder, and the lower ends of the two second clamping plates are used to clamp the rotor.

[0026] The preferred solution also includes a telescopic column, an elastic element, a proximity switch, and a detection optical fiber;

[0027] The lower part of the positioning rod is provided with an axial expansion groove, the elastic element and the expansion column are arranged in the expansion groove, so that the expansion column slides and expands axially in the expansion groove, and the positioning block is arranged on the expansion column.

[0028] The proximity switch is located at the pressure head, the center of the positioning rod is marked with an origin mark, and the detection fiber is located in the center of the connecting frame and corresponds to the position of the origin mark.

[0029] In a preferred embodiment, the crankshaft positioning module includes a second positioning cylinder, a second positioning bracket, and a second positioning push block;

[0030] Two second positioning frames are fixedly installed in the middle of the press frame, and two second positioning cylinders are fixedly installed on the second positioning frames. The output ends of the second positioning cylinders are horizontally set, and two second positioning push blocks are respectively installed at the output ends of the two second positioning cylinders. The two second positioning cylinders drive the two second positioning push blocks to abut against the crankshaft of the pump body.

[0031] After adopting the above solution, the beneficial effects of this utility model are as follows:

[0032] This invention uses a positioning mechanism to initially position the rotor, ensuring that the pressing module can transport the rotor to the pump body at the same angle. A locating rod within the pressing module, capable of rotating around its own axis, allows the locating block at its end to embed into the crankshaft's locating groove, causing the crankshaft to rotate synchronously. This achieves precise coaxial positioning of the rotor and crankshaft, avoiding the accuracy problems of traditional manual assembly, improving the assembly precision of the pump body and rotor, and ensuring the stability and reliability of subsequent pump operation. Furthermore, the coordinated feeding, loading, positioning, and pressing mechanisms enable automated rotor conveying, handling, positioning, and pressing, effectively improving production efficiency and reducing production costs. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the rotor pre-assembly equipment in this embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the overall structure of the feeding mechanism in an embodiment of this utility model;

[0035] Figure 3 This is a schematic diagram of the overall structure of the feeding mechanism in an embodiment of this utility model;

[0036] Figure 4 This is a schematic diagram of the overall structure of the positioning mechanism in an embodiment of this utility model;

[0037] Figure 5 This is a bottom view of an embodiment of the present invention, showing the rotor placed on the positioning boss of the positioning station of the positioning mechanism, with the first positioning push block abutting against the balance block at the bottom of the rotor for initial positioning.

[0038] Figure 6 This is a schematic diagram showing the relative positions of the rotor, the positioning boss, and the first positioning push block in an embodiment of the present invention, where the rotor is placed in front of the positioning boss at the positioning station of the positioning mechanism.

[0039] Figure 7 This is a schematic diagram of the overall structure of the pressing mechanism in an embodiment of this utility model;

[0040] Figure 8 This is a schematic diagram of the pressing module slidingly disposed on the upper part of the pressing frame in an embodiment of this utility model;

[0041] Figure 9 yes Figure 8 Enlarged view of point A in the middle;

[0042] Figure 10 This is a schematic diagram of the positioning block of the positioning rod being embedded in the positioning groove of the crankshaft of the pump body in an embodiment of this utility model;

[0043] Figure 11 This is a schematic diagram of the crankshaft positioning module positioning the crankshaft of the pump body in an embodiment of this utility model.

[0044] Label Explanation:

[0045] 1. Feeding mechanism; 10. Conveyor frame; 11. Flip plate; 110. Positioning groove; 111. Tooling; 12. Chain; 13. Conveyor motor; 14. First loaded optical fiber; 15. Flip plate positioning cylinder; 150. Positioning protrusion; 16. Stop switch; 17. Positioning screw;

[0046] 2. Feeding mechanism; 20. Gantry frame; 21. First slide rail; 22. First lead screw; 23. First transfer motor; 24. Clamping module; 240. Drive cylinder; 241. First clamping plate; 242. First clamping cylinder;

[0047] 3. Positioning mechanism; 30. Support base; 31. Second slide rail; 33. Material transfer cylinder; 34. First positioning frame; 340. Material storage station; 341. Positioning station; 342. Positioning boss; 343. Protruding column; 35. First positioning cylinder; 36. First positioning push block; 37. Second loaded optical fiber; 38. Press-fitting and loading station;

[0048] 4. Pressing mechanism; 40. Pressing frame; 400. Pressing station; 41. Support plate; 42. Pump body positioning seat; 43. Pressing module; 430. Servo electric cylinder; 431. Connecting frame; 432. Press head; 433. Rotary motor; 434. Second clamping cylinder; 435. Second clamping plate; 436. Telescopic column; 437. Proximity switch; 438. Detection fiber optic cable; 44. Crankshaft positioning module; 440. Second positioning cylinder; 441. Second positioning frame; 442. Second positioning push block; 45. Positioning rod; 450. Positioning block; 451. Origin mark; 46. Lifting cylinder;

[0049] 5. Rotor; 50. Balance weight; 51. Shaft hole;

[0050] 6. Pump body; 60. Crankshaft; 61. Positioning groove;

[0051] 7. Mounting plate. Detailed Implementation

[0052] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0053] This embodiment provides a pre-installed pump rotor device, such as... Figures 1 to 11 As shown, it includes a feeding mechanism 1, a loading mechanism 2, a positioning mechanism 3, and a pressing mechanism 4;

[0054] Several rotors 5 are arranged on the feeding mechanism 1. The positioning mechanism 3 is located at the end of the feeding mechanism 1. The loading mechanism 2 is located between the feeding mechanism 1 and the positioning mechanism 3. It is used to transport the rotors 5 to the positioning mechanism 3. The positioning mechanism 3 is provided with a pushing part. The pushing part moves horizontally and abuts against the rotor 5 for the initial positioning of the rotor 5. The shaft hole 51 of the rotor 5 is set vertically.

[0055] The pressing mechanism 4 is located on one side of the positioning mechanism 3. The pressing mechanism 4 is provided with a pressing station 400 and a pressing module 43. The pressing module 43 is provided with a vertically rotatable positioning rod 45 around its own axis. The end of the positioning rod 45 is provided with a positioning block 450. The pump body 6 is fixedly placed on the pressing station 400. The pump body 6 is provided with a crankshaft 60 in the axial direction. The crankshaft 60 is vertically arranged. The end of the crankshaft 60 is provided with a positioning groove 61 that matches the positioning block 450.

[0056] During the press-fitting operation, the press-fitting module 43 moves horizontally and vertically between the positioning mechanism 3 and the press-fitting station 400 to transport the rotor 5, which has completed the initial positioning on the positioning mechanism 3, to the pump body 6 above the press-fitting station 400. The positioning rod 45 passes through the shaft hole 51 of the rotor 5 and abuts against the crankshaft 60 coaxially. The positioning rod 45 rotates around its own axis to make the positioning block 450 embed into the positioning groove 61 of the crankshaft 60 and drive the crankshaft 60 to rotate synchronously. The press-fitting module 43 moves vertically to push the rotor 5 to be sleeved on the crankshaft 60 through the positioning rod 45.

[0057] Since the rotor 5 needs to have a certain relative positional relationship with the crankshaft 60 after it is fitted into the crankshaft 60, the positioning rod 45 rotates around its own axis to make the positioning block 450 embed into the positioning groove 61 of the crankshaft 60, and then continues to drive the crankshaft 60 to rotate synchronously. At this time, the rotor 5 is in a stationary state, and the crankshaft 60 adjusts its relative positional relationship with the rotor 5 by rotating around its own axis. When the crankshaft 60 rotates to the appropriate position, the positioning rod 45 and the crankshaft 60 stop rotating, and the pressing module 43 moves vertically to push the rotor 5 onto the crankshaft 60 through the positioning rod 45, thereby completing the pressing process. Of course, the user can determine the relative positional relationship between the rotor 5 and the crankshaft 60 according to actual needs to further adjust the angle at which the positioning rod 45 drives the crankshaft 60 to rotate synchronously.

[0058] In this embodiment, the positioning block 450 is embedded into the positioning groove 61 of the crankshaft 60 by rotating the positioning rod 45 around its own axis, thereby driving the crankshaft 60 to rotate synchronously. This effectively improves the assembly accuracy and quality of the pump body 6 rotor 5 and avoids assembly errors caused by manual operation. In addition, the cooperation of the feeding mechanism 1, the loading mechanism 2, the positioning mechanism 3, and the pressing mechanism 4 effectively improves production efficiency.

[0059] like Figure 1 and Figure 2 As shown, the feeding mechanism 1 includes a conveyor frame 10, a flap 11, a chain 12, and a conveyor motor 13;

[0060] Two chains 12 are arranged on the conveyor frame 10 along the length of the conveyor frame 10. The conveyor motor 13 is arranged on the conveyor frame 10 and is connected to the chains 12 for transmission. The two ends of multiple flaps 11 are respectively attached to the two chains 12 to form a rotary conveyor belt. Several rotors 5 are arranged on the flaps 11.

[0061] In this embodiment, the feeding mechanism 1 is composed of a conveyor frame 10, a flap 11, a chain 12, and a conveyor motor 13. The structure is relatively simple. The flap 11 can move evenly and stably under the drive of the chain 12, providing a reliable conveying platform for the rotor 5. Of course, other conveying structures can also be used in other embodiments.

[0062] like Figure 2 As shown, it also includes a first loaded optical fiber 14, a flip-plate positioning cylinder 15, and a stop switch 16;

[0063] The first loaded optical fiber 14, the flip-plate positioning cylinder 15, and the stop switch 16 are respectively set on the conveyor frame 10 at the end of the rotary conveyor belt along the conveying direction of the rotary conveyor belt. The flip-plate 11 has positioning grooves 110 at both ends where it overlaps with the chain 12. The output end of the flip-plate positioning cylinder 15 has a positioning protrusion 150. The flip-plate 11 has a positioning screw 17 at the position corresponding to the stop switch 16. When the stop switch 16 detects the positioning screw 17 of the flip-plate 11 and is triggered, the conveyor motor 13 stops working. When the first loaded optical fiber 14 detects the rotor 5 of the flip-plate 11 and is triggered, the flip-plate positioning cylinder 15 drives the positioning protrusion 150 to embed into the positioning groove 110 of the flip-plate 11 to fix the flip-plate 11.

[0064] In this embodiment, the stop switch 16 can accurately detect the position of the rotor 5 at the end of the rotary conveyor belt. When the stop switch 16 detects the positioning screw 17 of the flip plate 11, it immediately triggers a signal to stop the conveyor motor 13. If the first material-carrying optical fiber 14 detects that the flip plate 11 has the rotor 5, the flip plate positioning cylinder 15 drives the positioning protrusion 150 to embed into the positioning groove 110 of the flip plate 11, thereby achieving precise fixation of the flip plate 11. If the first material-carrying optical fiber 14 does not detect that the flip plate 11 has the rotor 5, the conveyor motor 13 continues to work, so that the flip plate 11 continues to convey the rotor 5, ensuring the smooth progress of the subsequent feeding process.

[0065] like Figure 1 and 3 As shown, the feeding mechanism 2 includes a gantry frame 20, a first slide rail 21, a first lead screw 22, a first material transfer motor 23, and a clamping module 24;

[0066] The gantry frame 20 is fixedly installed between the feeding mechanism 1 and the positioning mechanism 3. The first slide rail 21, the first lead screw 22 and the first transfer motor 23 are installed on the crossbeam of the gantry frame 20. Several clamping modules 24 are slidably installed on the first slide rail 21 and are connected to the first lead screw 22 in a transmission connection. The output end of the first transfer motor 23 is connected to the first lead screw 22 in a transmission connection.

[0067] In this embodiment, the first transfer motor 23 drives the first lead screw 22 to rotate, which in turn drives the clamping module 24 to slide on the first slide rail 21. This allows the clamping module 24 to accurately grip and place the rotor 5, improving the accuracy of material loading. Furthermore, the gantry frame 20, the first slide rail 21, the first lead screw 22, and the first transfer motor 23 are all standardized components, which facilitates later maintenance.

[0068] like Figure 3 As shown, the clamping module 24 includes a drive cylinder 240, a first clamping plate 241, and a first clamping cylinder 242;

[0069] The drive cylinder 240 is slidably mounted on the first slide rail 21 and is connected to the first lead screw 22 for transmission. The output end of the drive cylinder 240 is vertically mounted. The first clamping cylinder 242 is fixedly mounted on the output end of the drive cylinder 240. The two output ends of the first clamping cylinder 242 are horizontally mounted. The two first clamping plates 241 are vertically mounted. The upper ends of the two first clamping plates 241 are respectively fixed to the two output ends of the first clamping cylinder 242. The lower ends of the two first clamping plates 241 are used to clamp the rotor 5.

[0070] In this embodiment, the two output ends of the first clamping cylinder 242 are horizontally positioned, driving the two vertical first clamping plates 241 to move relative to each other, ensuring the stability and reliability of the feeding process. Through precise control of the first clamping cylinder 242, the distance between the two first clamping plates 241 can be adjusted to achieve precise clamping of rotors 5 of different sizes. Furthermore, anti-slip pads can be installed at the lower ends of the two first clamping plates 241 to improve clamping stability and prevent damage to the rotors 5 during the clamping process.

[0071] In this embodiment, there are two clamping modules 24. In other embodiments, the number of clamping modules 24 can be set according to actual needs.

[0072] like Figure 1 , Figures 4 to 6 As shown, the positioning mechanism 3 includes a support base 30, a second slide rail 31, a material transfer cylinder 33, a first positioning frame 34, a first positioning cylinder 35, and a second material-loaded optical fiber 37.

[0073] The support base 30 is located at the end of the feeding mechanism 1, the second slide rail 31 and the transfer cylinder 33 are located on the support base 30, and the first positioning frame 34 is slidably located on the second slide rail 31 and connected to the output end of the transfer cylinder 33.

[0074] The first positioning frame 34 is provided with a material storage station 340 and a positioning station 341. The second material-loaded optical fiber 37 is respectively set on the material storage station 340 and the positioning station 341. The first positioning cylinder 35 is fixedly set on the positioning station 341. The output end of the first positioning cylinder 35 is set horizontally. The pushing part is the first positioning push block 36. The first positioning push block 36 is set on the output end of the first positioning cylinder 35. The rotor 5 is placed on the positioning station 341. The bottom of the rotor 5 is provided with a balance block 50. The first positioning cylinder 35 drives the first positioning push block 36 to move horizontally and abut against the balance block 50 at the bottom of the rotor 5 to perform preliminary positioning of the rotor 5.

[0075] When the clamping module 24 places the rotor 5 at the positioning station 341, the first positioning push block 36 is driven by the first positioning cylinder 35 to move horizontally and abut against the balance block 50 at the bottom of the rotor 5. Figure 5 and Figure 6 As shown, this enables the initial positioning of rotor 5, ensuring that each rotor 5 maintains a consistent angle during the subsequent press-fitting process.

[0076] Specifically, the storage station 340 and the positioning station 341 are also equipped with positioning bosses 342 for placing the rotor 5, such as Figure 6As shown, a protruding post 343 is provided on the upper part of the boss. When the rotor 5 is placed on the positioning boss 342, the protruding post 343 on the upper part of the positioning boss 342 extends into the shaft hole 51 of the rotor 5, which plays a stabilizing role. The balance block 50 at the bottom of the rotor 5 is in a suspended state, so that when the first positioning cylinder 35 drives the first positioning push block 36 to move horizontally and abut against the balance block 50 at the bottom of the rotor 5, the rotor 5 rotates a certain angle around the axis of the boss through the shaft hole 51 for preliminary positioning. Since the rotor 5 is provided with a balance block 50 at the bottom, in order to ensure the stability of the rotor 5 when placed on the flip plate 11, this embodiment also provides a tooling 111 for placing the rotor 5 on the flip plate 11, but it is not limited to this.

[0077] By driving the first positioning frame 34 to slide on the second slide rail 31 through the transfer cylinder 33, the rotor 5, which has completed the initial positioning, can be transported to the pressing and loading station 38 near the pressing mechanism 4, so as to facilitate the handling of the pressing module 43 of the pressing mechanism 4.

[0078] In addition, both the storage station 340 and the positioning station 341 are equipped with a second fiber optic cable 37 for detecting whether the rotor 5 is placed on the storage station 340 and the positioning station 341, to ensure the smooth progress of subsequent preliminary positioning. When the positioning station 341 malfunctions, the clamping module 24 can also temporarily place the rotor 5 on the storage station 340. In this embodiment, the number of positioning stations 341 is the same as the number of clamping modules 24. Of course, in other embodiments, the number of positioning stations 341 and storage stations 340 can be adjusted according to actual needs.

[0079] like Figure 1 and Figure 7 As shown, the pressing mechanism 4 also includes a pressing frame 40, a support plate 41, a pump body positioning seat 42, and a crankshaft positioning module 44;

[0080] The press-fit frame 40 is disposed on one side of the positioning mechanism 3, and the support plate 41 is fixedly disposed in the middle of the press-fit frame 40 to form the press-fit station 400. The pump body positioning seat 42 is fixedly disposed on the support plate 41 for fixing the pump body 6. The crankshaft positioning module 44 is fixedly disposed in the middle of the press-fit frame 40 for positioning the crankshaft 60 of the pump body 6. The press-fit module 43 is slidably disposed on the upper part of the press-fit frame 40 for transporting the rotor 5, which has completed the initial positioning on the positioning mechanism 3, to the upper part of the press-fit station 400 through horizontal and vertical movements.

[0081] In this embodiment, the pump body positioning seat 42 can securely fix the pump body 6, and the crankshaft positioning module 44 can accurately position the crankshaft 60 of the pump body 6, preventing the crankshaft 60 from rotating as soon as the positioning rod 45 contacts the crankshaft 60 when it rotates around its own axis, thus affecting the alignment process of the positioning block 450 embedded in the positioning groove 61 of the crankshaft 60. The pressing module 43 moves horizontally and vertically on the upper part of the pressing frame 40. By precisely controlling the movement trajectory and speed of the pressing module 43, the rotor 5 can be smoothly and accurately transported to the pump body 6 above the pressing station 400, ensuring that the positioning block 450 of the positioning rod 45 can be smoothly embedded in the positioning groove 61 of the crankshaft 60.

[0082] Specifically, a lifting cylinder 46 can be installed in the middle of the pressing frame 40. The output end of the lifting cylinder 46 faces vertically upward, and the bottom of the support plate 41 is located at the output end of the lifting cylinder 46. During pressing, the lifting cylinder 46 lifts the support plate 41 together with the pump body positioning seat 42 to ensure that the crankshaft 60 of the pump body 6 is at the same horizontal height during each pressing.

[0083] Of course, a production line can also be set up at the lower part of the pressing frame 40. The pump body 6 is pre-fixed on the pump body positioning seat 42. The production line is used to transport the pump body 6 and the pump body positioning seat 42. When the pump body 6 and the pump body positioning seat 42 are transported to the pressing station 400, the lifting cylinder 46 lifts the pump body 6 and the pump body positioning seat 42 together away from the production line for pressing. After pressing is completed, the lifting cylinder 46 drives the pressed pump body 6 and the pump body positioning seat 42 back to the production line to be transported out of the pressing station 400. This is something that can be achieved by those skilled in the art, and will not be described in detail here.

[0084] like Figure 1 As shown, in this embodiment, the press-fitting frame 40 is set on one side of the positioning mechanism 3. In order to make the positioning mechanism 3 and the press-fitting mechanism 4 more stable, in this embodiment, a mounting plate 7 is directly covered between the support seat 30 of the positioning mechanism 3 and the press-fitting frame 40 of the press-fitting mechanism 4. The other components of the positioning mechanism 3, except for the support seat 30, the lifting cylinder 46, the pump body positioning seat 42 and the crankshaft positioning module 44 are directly set on the mounting plate 7. This improves the overall stability of the equipment and facilitates the loading and unloading of each structure.

[0085] like Figures 8 to 10 As shown, the press-fitting module 43 includes a servo electric cylinder 430, a connecting frame 431, a press head 432, a rotary motor 433, a second clamping cylinder 434, and a second clamping plate 435.

[0086] The servo cylinder 430 is slidably mounted on the upper part of the pressing frame 40 and is used for horizontal and vertical movement on the upper part of the pressing frame 40. The output end of the servo cylinder 430 is vertically downward and is provided with a connecting frame 431. The positioning rod 45 is vertically mounted on the connecting frame 431. The rotary motor 433 is mounted on the upper part of the connecting frame 431 and is connected to the upper part of the positioning rod 45 for driving the positioning rod 45 to rotate around its own axis. The pressing head 432 is slidably sleeved on the lower part of the positioning rod 45 and is located above the positioning block 450.

[0087] The second clamping cylinder 434 is fixedly installed at the lower part of the connecting frame 431. The two output ends of the second clamping cylinder 434 are horizontally arranged. The upper ends of the two second clamping plates 435 are respectively fixed to the two output ends of the second clamping cylinder 434. The lower ends of the two second clamping plates 435 are used to clamp the rotor 5.

[0088] During the press-fitting process, the servo electric cylinder 430 can precisely control the pressing distance and speed of the press head 432, ensuring that the rotor 5 is pressed into the crankshaft 60 of the pump body 6 with appropriate force and position, improving the assembly accuracy and consistency of the product. Furthermore, the press head 432 and the positioning rod 45 have a relative sliding motion relationship, rather than synchronous motion; that is, the servo electric cylinder 430 can drive the press head 432 to slide on the positioning rod 45, pressing the rotor 5 onto the crankshaft 60 via the positioning rod 45. The positioning rod 45 is vertically mounted on the connecting frame 431, and the rotary motor 433 can drive it to rotate around its own axis, ensuring that the positioning block 450 of the positioning rod 45 smoothly embeds into the positioning groove 61 of the crankshaft 60 and drives the crankshaft 60 to rotate synchronously. The servo electric cylinder 430 in this embodiment can use existing equipment; the horizontal and vertical movement of the servo electric cylinder 430 on the upper part of the press-fitting frame 40 is achievable by those skilled in the art and will not be elaborated further.

[0089] When the rotor 5, which has completed its initial positioning at the press-fitting station 38 of the positioning mechanism 3, is transported by the servo electric cylinder 430, the positioning rod 45 first passes through the shaft hole 51 of the rotor 5. Then, the second clamping cylinder 434 drives the two second clamping plates 435 to clamp the rotor 5, ensuring smooth clamping. Of course, anti-slip pads can also be set at the lower end of the two second clamping plates 435 to improve the stability of clamping and prevent damage to the rotor 5 during the clamping process.

[0090] like Figure 9 As shown, this embodiment also includes a telescopic column 436, an elastic element, a proximity switch 437, and a detection optical fiber 438;

[0091] The lower part of the positioning rod 45 is provided with an axial expansion groove. The elastic element and the expansion column 436 are arranged in the expansion groove, so that the expansion column 436 slides and extends axially in the expansion groove. The positioning block 450 is arranged on the expansion column 436.

[0092] The proximity switch 437 is located at the pressure head 432, the positioning rod 45 has an origin mark 451 in the middle, and the detection optical fiber 438 is located in the middle of the connecting frame 431 and corresponds to the position of the origin mark 451.

[0093] In this embodiment, one end of the elastic element abuts against the bottom of the expansion groove, and the other end of the elastic element abuts against the expansion column 436, so that the expansion column 436 can slide and expand axially in the expansion groove.

[0094] When the servo cylinder 430 drives the positioning rod 45 above the pump body 6 downward, the telescopic column 436 at the lower part of the positioning rod 45 first contacts the upper part of the crankshaft 60. At this time, the rotary motor 433 drives the positioning rod 45 to rotate around its own axis. Since the telescopic column 436 can slide and extend axially in the telescopic groove, it can ensure that the telescopic column 436 is always in contact with the crankshaft 60, so that the positioning block 450 on the telescopic column 436 can be smoothly embedded in the positioning groove 61 of the crankshaft 60, driving the crankshaft 60 to rotate synchronously. Figure 11 As shown, the structure is simple and the design is ingenious. At the same time, the elastic element also acts as a buffer, which helps protect the positioning rod 45 and the crankshaft 60, ensuring smooth press-fitting. In this embodiment, the elastic element is a compression spring, but it is not limited to this.

[0095] As mentioned above, after the rotor 5 is inserted into the crankshaft 60, the rotor 5 and the crankshaft 60 need to have a certain relative positional relationship. Therefore, in this embodiment, a proximity switch 437 is provided at the pressure head 432, an origin mark 451 is provided in the middle of the positioning rod 45, and the detection optical fiber 438 is provided in the middle of the connecting frame 431 and corresponds to the position of the origin mark 451.

[0096] When the positioning block 450 on the telescopic column 436 is embedded in the positioning groove 61 of the crankshaft 60, the proximity switch 437 is triggered. At this time, the rotary motor 433 will continue to drive the positioning rod 45 and the crankshaft 60 to rotate. When the detection fiber 438 detects the origin mark in the middle of the positioning rod 45 and triggers it during the rotation, the rotary motor 433 stops working. This position is the required relative position between the rotor 5 and the crankshaft 60.

[0097] Of course, users can also use other detection sensors for proximity switch 437 and detection fiber optic cable 438 according to their actual needs.

[0098] like Figure 11 As shown, the crankshaft positioning module 44 includes a second positioning cylinder 440, a second positioning bracket 441, and a second positioning push block 442.

[0099] Two second positioning frames 441 are fixedly installed in the middle of the press frame 40, and two second positioning cylinders 440 are fixedly installed on the second positioning frames 441. The output ends of the second positioning cylinders 440 are horizontally set, and two second positioning push blocks 442 are respectively installed at the output ends of the two second positioning cylinders 440. The two second positioning cylinders 440 drive the two second positioning push blocks 442 to abut against the crankshaft 60 of the pump body 6.

[0100] In this embodiment, two second positioning cylinders 440 drive two second positioning push blocks 442 to abut against the crankshaft 60 of the pump body 6. This prevents the crankshaft 60 from rotating as soon as the positioning rod 45 contacts it around its own axis, thus affecting the alignment process of the positioning block 450 embedded in the positioning groove 61 of the crankshaft 60. In other embodiments, the number of second positioning cylinders 440 and second positioning push blocks 442 can be adjusted according to actual needs. Of course, to ensure positioning stability, the number should be two or more.

[0101] The working process of this embodiment is as follows:

[0102] The operator first places the rotor 5 on the tooling 111 of the flip plate 11 of the feeding mechanism 1. The conveyor motor 13 drives the chain 12 to move the rotor 5 on the flip plate 11. When the stop switch 16 detects the positioning screw 17 of the flip plate 11, it immediately triggers a signal to stop the conveyor motor 13. If the first material-carrying optical fiber 14 detects that the flip plate 11 has the rotor 5, the flip plate positioning cylinder 15 drives the positioning protrusion 150 to embed into the positioning groove 110 of the flip plate 11, thereby fixing the flip plate 11. If the first material-carrying optical fiber 14 does not detect that the flip plate 11 has the rotor 5, the conveyor motor 13 continues to work, allowing the flip plate 11 to continue conveying the rotor 5.

[0103] The first transfer motor 23 of the feeding mechanism 2 drives the drive cylinder 240 on the first slide rail 21 to move above the rotor 5 of the flip plate 11 through the first lead screw 22. The drive cylinder 240 drives the two first clamping plates 241 to move downward. The first clamping cylinder 242 drives the lower end of the two first clamping plates 241 to clamp the rotor 5. Then, the first transfer motor 23 drives the drive cylinder 240 on the first slide rail 21 to move together with the rotor 5 to the positioning station 341 of the positioning mechanism 3 through the first lead screw 22. The drive cylinder 240 drives the two first clamping plates 241 to move downward to align the shaft hole 51 of the rotor 5 with the protrusion 343 on the upper part of the positioning boss 342 of the positioning station 341 and place it on the positioning boss 342.

[0104] When the second fiber optic cable 37 of the positioning mechanism 3 senses the rotor 5 placed at the positioning station 341, it is triggered. The first positioning cylinder 35 drives the first positioning push block 36 to move horizontally and abut against the balance block 50 at the bottom of the rotor 5. The rotor 5 rotates around the boss axis through the shaft hole 51 for initial positioning, so that the rotor 5 always maintains the same angle direction during subsequent feeding. The transfer cylinder 33 drives the first positioning frame 34 on the second slide rail 31 to move together with the rotor 5, which has completed the initial positioning, to the pressing and feeding station 38 near the pressing mechanism 4.

[0105] The servo motor of the pressing mechanism 4 moves horizontally and vertically on the upper part of the pressing frame 40 to the pressing and loading station 38 to transport the rotor 5 that has completed the initial positioning. The positioning rod 45 first passes through the shaft hole 51 of the rotor 5. The second clamping cylinder 434 drives the two second clamping plates 435 to clamp the rotor 5. Then the servo motor transports the rotor 5 to the pressing station 400. At the same time, the lifting cylinder 46 at the pressing station 400 lifts the support plate 41 together with the pump body 6 on the pump body positioning seat 42.

[0106] When the servo cylinder 430 drives the positioning rod 45 above the pump body 6 downward, the telescopic column 436 at the lower part of the positioning rod 45 first contacts the upper part of the crankshaft 60. At this time, the rotary motor 433 drives the positioning rod 45 to rotate around its own axis. Since the telescopic column 436 can slide and extend axially in the telescopic groove, the telescopic column 436 is always in contact with the crankshaft 60, so that the positioning block 450 on the telescopic column 436 can be smoothly embedded in the positioning groove 61 on the upper part of the crankshaft 60 and drive the crankshaft 60 to rotate synchronously.

[0107] When the positioning block 450 on the telescopic column 436 is embedded in the positioning groove 61 of the crankshaft 60, the proximity switch 437 is triggered. At this time, the rotary motor 433 will continue to drive the positioning rod 45 and the crankshaft 60 to rotate. When the detection fiber optic cable 438 detects the origin mark in the middle of the positioning rod 45 during the rotation, it is triggered and the rotary motor 433 stops working. This position is the required relative position between the rotor 5 and the crankshaft 60.

[0108] Then, the servo cylinder 430 continues to drive the press head 432 downward, and the second clamping cylinder 434 synchronously drives the two second clamping plates 435 to move back and forth to release the clamping of the rotor 5. The press head 432 then inserts the rotor 5 into the crankshaft 60 of the pump body 6 through the positioning rod 45 to complete the press fitting.

[0109] The directional terms used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0110] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.

Claims

1. A pump rotor pre-assembly device, characterized in that: This includes a feeding mechanism, a loading mechanism, a positioning mechanism, and a pressing mechanism; Several rotors are arranged on the feeding mechanism. The positioning mechanism is located at the end of the feeding mechanism. The loading mechanism is located between the feeding mechanism and the positioning mechanism and is used to transport the rotors to the positioning mechanism. The positioning mechanism is provided with a pushing part. The pushing part moves horizontally and abuts against the rotor for the initial positioning of the rotor. The shaft hole of the rotor is set vertically. The pressing mechanism is located on one side of the positioning mechanism. The pressing mechanism has a pressing station and a pressing module. The pressing module has a vertically rotatable positioning rod that can rotate around its own axis. The end of the positioning rod has a positioning block. The pump body is fixedly placed on the pressing station. The pump body has a crankshaft in the axial direction. The crankshaft is vertically oriented and the end of the crankshaft has a positioning groove that matches the positioning block. During the press-fitting operation, the horizontal and vertical movements of the press-fitting module between the positioning mechanism and the press-fitting station transport the rotor, which has completed its initial positioning on the positioning mechanism, to the pump body above the press-fitting station. The positioning rod passes through the shaft hole of the rotor and abuts against the crankshaft coaxially. The positioning rod rotates around its own axis, causing the positioning block to embed into the positioning groove of the crankshaft and drive the crankshaft to rotate synchronously. The vertical movement of the press-fitting module pushes the rotor to be sleeved on the crankshaft through the positioning rod.

2. The pump rotor pre-assembly equipment as described in claim 1, characterized in that: The feeding mechanism includes a conveyor frame, a flap, a chain, and a conveyor motor; Two chains are set on the conveyor frame along the length of the conveyor frame. The conveyor motor is set on the conveyor frame and connected to the chain drive. The two ends of multiple flaps are respectively attached to the two chains to form a rotary conveyor belt. Several rotors are arranged on the flaps.

3. The pump rotor pre-assembly device as described in claim 2, characterized in that: It also includes the first loaded optical fiber, the flip-plate positioning cylinder, and the stop switch; The first loaded optical fiber, the flip-plate positioning cylinder, and the stop switch are respectively installed on the conveyor frame at the end of the rotary conveyor belt along the conveying direction of the rotary conveyor belt. The two ends of the flip-plate overlapping the chain are respectively provided with positioning grooves. The output end of the flip-plate positioning cylinder is provided with a positioning protrusion. The flip-plate is provided with a positioning screw at the position corresponding to the stop switch. When the stop switch detects the positioning screw of the flip-plate and is triggered, the conveyor motor stops working. When the first loaded optical fiber detects the rotor of the flip-plate and is triggered, the flip-plate positioning cylinder drives the positioning protrusion to embed into the positioning groove of the flip-plate to fix the flip-plate.

4. The pump rotor pre-assembly device as described in claim 1, characterized in that: The feeding mechanism includes a gantry frame, a first slide rail, a first lead screw, a first material transfer motor, and a clamping module; The gantry frame is fixedly installed between the feeding mechanism and the positioning mechanism. The first slide rail, the first lead screw, and the first transfer motor are installed on the crossbeam of the gantry frame. Several clamping modules are slidably installed on the first slide rail and are connected to the first lead screw via transmission. The output end of the first transfer motor is connected to the first lead screw via transmission.

5. The pump rotor pre-assembly device as described in claim 4, characterized in that: The clamping module includes a drive cylinder, a first clamping plate, and a first clamping cylinder; The drive cylinder is slidably mounted on the first slide rail and is connected to the first lead screw. The output end of the drive cylinder is vertically mounted. The first clamping cylinder is fixedly mounted on the output end of the drive cylinder. The two output ends of the first clamping cylinder are horizontally mounted. The two first clamping plates are vertically mounted. The upper ends of the two first clamping plates are respectively fixed to the two output ends of the first clamping cylinder. The lower ends of the two first clamping plates are used to clamp the rotor.

6. The pump rotor pre-assembly device as described in claim 1, characterized in that: The positioning mechanism includes a support base, a second slide rail, a material transfer cylinder, a first positioning frame, a first positioning cylinder, and a second loaded optical fiber; The support base is located at the end of the feeding mechanism, the second slide rail and the material transfer cylinder are located on the support base, and the first positioning frame is slidably located on the second slide rail and connected to the output end of the material transfer cylinder. The first positioning frame is equipped with a material storage station and a positioning station. The second material-loaded optical fiber is respectively set at the material storage station and the positioning station. The first positioning cylinder is fixedly set at the positioning station. The output end of the first positioning cylinder is set horizontally. The pushing part is the first positioning push block. The first positioning push block is set at the output end of the first positioning cylinder. The rotor is placed at the positioning station. A balance block is set at the bottom of the rotor. The first positioning cylinder drives the first positioning push block to move horizontally and abut against the balance block at the bottom of the rotor to perform preliminary positioning of the rotor.

7. The pump rotor pre-assembly device as described in claim 1, characterized in that: The pressing mechanism also includes a pressing frame, a support plate, a pump body positioning seat, and a crankshaft positioning module; The pressing frame is located on one side of the positioning mechanism, and the support plate is fixedly located in the middle of the pressing frame to form the pressing station. The pump body positioning seat is fixedly located on the support plate for fixing the pump body. The crankshaft positioning module is fixedly located in the middle of the pressing frame for positioning the crankshaft of the pump body. The pressing module is slidably located on the upper part of the pressing frame for transporting the rotor that has completed the initial positioning on the positioning mechanism to the pump body above the pressing station through horizontal and vertical movements.

8. The pump rotor pre-assembly device as described in claim 7, characterized in that: The press-fitting module includes a servo electric cylinder, a connecting frame, a press head, a rotary motor, a second clamping cylinder, and a second clamping plate. The servo electric cylinder is slidably mounted on the upper part of the pressing frame for horizontal and vertical movement on the upper part of the pressing frame. The output end of the servo electric cylinder is vertically downward and is provided with a connecting frame. The positioning rod is vertically mounted on the connecting frame. The rotary motor is mounted on the upper part of the connecting frame and is connected to the upper part of the positioning rod for driving the positioning rod to rotate around its own axis. The pressure head is slidably mounted on the lower part of the positioning rod and is located above the positioning block. The second clamping cylinder is fixedly installed at the lower part of the connecting frame. The two output ends of the second clamping cylinder are horizontally set. The upper ends of the two second clamping plates are respectively fixed to the two output ends of the second clamping cylinder, and the lower ends of the two second clamping plates are used to clamp the rotor.

9. The pump rotor pre-assembly device as described in claim 8, characterized in that: It also includes telescopic columns, elastic elements, proximity switches, and detection optical fibers; The lower part of the positioning rod is provided with an axial expansion groove, the elastic element and the expansion column are arranged in the expansion groove, so that the expansion column slides and expands axially in the expansion groove, and the positioning block is arranged on the expansion column. The proximity switch is located at the pressure head, the center of the positioning rod is marked with an origin mark, and the detection fiber is located in the center of the connecting frame and corresponds to the position of the origin mark.

10. The pump rotor pre-assembly device as described in claim 7, characterized in that: The crankshaft positioning module includes a second positioning cylinder, a second positioning bracket, and a second positioning push block. Two second positioning frames are fixedly installed in the middle of the press frame, and two second positioning cylinders are fixedly installed on the second positioning frames. The output ends of the second positioning cylinders are horizontally set, and two second positioning push blocks are respectively installed at the output ends of the two second positioning cylinders. The two second positioning cylinders drive the two second positioning push blocks to abut against the crankshaft of the pump body.

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