Assembly line and assembly process for oil pump assembly

Abstract

The invention relates to an oil pump assembly assembly line and an assembly process, and relates to the technical field of oil pump assembly assembly.The oil pump assembly assembly line comprises a rack and a movable base, the rack is sequentially provided with a stator hot charging mechanism, an oil seal press fitting mechanism and a detection mechanism, and the stator hot charging mechanism is used for grabbing a machine shell to be heated and then grabbing a stator to be press-fitted into the heated machine shell; the oil seal press-fitting mechanism is used for press-fitting the oil seal into the machine shell, and the detection mechanism is used for detecting the positions of the stator and the oil seal after press-fitting. According to the machine, a machine shell and a stator are placed on the moving seat to be conveyed by a worker, the stator hot charging mechanism grabs the machine shell to be heated and then press-fits the stator into the machine shell, the oil seal press-fitting mechanism is used for press-fitting an oil seal into the machine shell, and the detection mechanism is used for detecting the positions of the machine shell, the stator and the oil seal. And each process is subjected to standardized assembly line work, so that the assembly process is more convenient and accurate, and the assembly quality and the assembly efficiency of the oil pump are improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil pump assembly, and in particular to an oil pump assembly line and assembly process. Background Art

[0002] The function of the oil pump is to increase the oil to a certain pressure and then force it onto the moving surfaces of various engine parts.

[0003] During the assembly of the oil pump, the stator and oil seal need to be assembled into the casing in sequence. The assembly process usually relies on manual operation, which is time-consuming and labor-intensive. In addition, the matching accuracy between multiple assembly parts is extremely high. The assembly quality of manual assembly is difficult to guarantee, thereby reducing the quality and efficiency of the oil pump assembly. Summary of the invention

[0004] In order to improve the quality and efficiency of oil pump assembly, the present application provides an oil pump assembly line and assembly process.

[0005] In the first aspect, the present application provides an oil pump assembly line and assembly process, which adopts the following technical solutions: An oil pump assembly line comprises a frame, a movable seat for placing a casing and a stator and moving on the frame, a stator heat-fitting mechanism, an oil seal pressing mechanism and a detection mechanism are sequentially arranged on the frame along the moving direction of the movable seat, the stator heat-fitting mechanism is used to grab the casing and heat it, and then grab the stator and press it into the heated casing, the oil seal pressing mechanism is used to press the oil seal into the casing, and the detection mechanism is used to detect the positions of the stator and the oil seal after being pressed.

[0006] By adopting the above technical solution, the staff places the casing and the stator on the moving seat, the moving seat moves on the frame, the moving seat moves to the stator heat-installing mechanism, the stator heat-installing mechanism grabs the casing and places it on the frame and then heats it, so that the casing expands due to the heat, that is, the internal diameter of the casing becomes larger, the stator maintains the original temperature and the diameter remains unchanged, and then the stator is pressed into the casing, the casing is placed on the moving seat and continues to move forward to the oil seal pressing mechanism, the oil seal pressing mechanism is used to press the oil seal into the casing, the moving seat continues to drive the casing, the stator and the oil seal to move to the detection mechanism, the detection mechanism is used to detect the position of the casing, the stator and the oil seal.

[0007] Standardized assembly line operations are performed in each process to make the assembly process more convenient and precise, thereby improving the assembly quality and efficiency of the oil pump.

[0008] The housing and the stator are both made of metal materials, and in order to improve the matching accuracy between the two, the tolerance between the two needs to be designed to be smaller. However, the smaller tolerance makes it difficult to press the two together during assembly, and it is also easy for the housing and the positioning to generate force and wear, making it impossible to achieve both improved assembly efficiency and quality.

[0009] By heating the casing to increase the inner diameter, while maintaining the stator at room temperature, the stator can be pressed into the casing with a smaller tolerance. The casing shrinks after cooling down, so that the casing and stator can achieve the required assembly accuracy, which also improves the convenience of the press-fitting process and reduces the probability of wear between the two, thereby further improving the assembly quality and efficiency of the oil pump.

[0010] Optionally, the stator shrink-fit mechanism includes: Pressing table 1 and pressing table 2 are both used to place the casing for positioning; A heating assembly, used for heating the inside of the housing located on the first press-fitting table; A gripping assembly for gripping the housing and moving the stator; The press-fitting assembly is used to press-fit the stator into the casing located on the press-fitting table two. The grabbing assembly first grabs the casing and places it on the press-fitting table one and the press-fitting table two in sequence, and then grabs the stator and places it on the casing. The press-fitting assembly starts to press-fit the stator, and the grabbing assembly then grabs the casing and places it on the moving seat.

[0011] By adopting the above technical scheme, the grabbing component is started to grab the casing on the moving seat and convey it to the pressing table one, the heating component heats and expands the casing on the pressing table one, the grabbing component grabs the heated casing and places it on the pressing table two, the grabbing component grabs the stator and places it on the casing, the pressing assembly is started to press the stator into the casing, and at the same time, the grabbing component grabs the casing on the moving seat and conveys it to the pressing table one, the heating component is started to heat it, and finally the grabbing component grabs the casing that has been pressed on the pressing table two and places it on the moving seat, the moving seat moves to drive the casing to the next process for assembly, so as to complete the press-fitting of the stator after heating the casing, and the casing heating and positioning press-fitting are carried out simultaneously, thereby saving the time spent on heating and press-fitting, thereby improving the assembly quality and efficiency of the oil pump.

[0012] Optionally, the press-fitting table is vertically slidably arranged on the frame, and the heating assembly comprises: A heating machine, which is arranged on a frame and is provided with a heating element for heating; The lifting member is arranged on the frame and is used to drive the pressing table to move. When the pressing table moves up, the heating member is extended into the casing for heating. After the heating is completed, the pressing table moves down and the casing is moved below the heating member.

[0013] By adopting the above technical solution, before heating, the lifting member drives the press fitting table to move down, so that a space for placing the casing is formed between the heating member and the press fitting table, and then the casing is placed on the press fitting table, and the lifting member starts to drive the press fitting table to move up, so that the heating member extends into the casing, and the heating member starts to heat and expand the inside of the casing, and the inside of the casing is heated by the heating member, thereby further accelerating the heating efficiency of the casing, improving the assembly efficiency of the oil pump, and saving energy.

[0014] Optionally, the grabbing component includes: A movable plate is slidably arranged on the frame; A moving part, used for driving the moving plate to move; Two grabbing members are arranged on the moving seat and are used for grabbing and conveying the casing and the stator respectively.

[0015] By adopting the above technical solution, the moving part starts to drive the moving seat to move, thereby driving the two grabbing parts to move. The two grabbing parts are used to grab and convey the casing and the stator. The two grabbing parts are respectively arranged corresponding to the pressing table one and the pressing table two. When one grabbing part corresponds to the pressing table one, the other grabbing part corresponds to the pressing table two, thereby greatly shortening the moving length during the grabbing process, thereby greatly saving the time spent in the grabbing process and improving the assembly efficiency. Furthermore, the shortened time can also greatly reduce the risk of cooling of the casing, so that the temperature of the casing can be closer to the temperature suitable for stator assembly, thereby improving the assembly efficiency and saving energy.

[0016] Optionally, a sliding seat is installed horizontally on the frame, and the press-fitting table one and the press-fitting table two are arranged on the sliding seat. The frame is provided with a pushing member for pushing the sliding seat to move, and the pushing member starts the press-fitting table one to align with the heating component and the press-fitting table two to align with the press-fitting component, or, makes the press-fitting table one align with the press-fitting component.

[0017] By adopting the above technical solution, the pushing member starts to drive the sliding seat to move, the sliding seat moves to drive the press-fitting table one and the press-fitting table two to move, so that the press-fitting table one is aligned with the press-fitting assembly, the grabbing member starts to grab the heated casing, the pushing member starts to drive the sliding seat to move, so that the press-fitting table two is aligned with the press-fitting assembly, the grabbing member places the heated casing on the press-fitting table two, the pushing member starts to align the press-fitting table one with the press-fitting assembly, the two grabbing members place the casing on the press-fitting table one respectively, and the stator is placed on the heated casing, the pushing member starts to drive the sliding seat to move, so that the press-fitting table one is aligned with the heating assembly, the press-fitting table two is aligned with the press-fitting assembly, the press-fitting assembly starts to press the stator to complete the assembly, and at the same time the heating assembly heats the casing, thereby realizing the simultaneous assembly of the stator and heating of the heating assembly.

[0018] The heating time of the casing by the heating component is longer than the time required for stator press-fitting. Therefore, after the stator is press-fitted and the heating component is heated, the grabbing part grabs the assembled casing and places it on the moving seat, thereby further shortening the time spent on grabbing the casing and stator, improving assembly efficiency and saving energy.

[0019] When placing or grabbing the casing, the casing is located at the press-fitting assembly. When the press-fitting assembly is started, the distance between the casing and the press-fitting assembly is already large. Therefore, using this space to implement the above operations improves the convenience during the operation process. At the same time, it also shortens the moving distance of the heating element. The heating element only needs to be moved to the outside of the casing, saving time during the movement process and reducing the probability of large heat loss after the heating element moves a long distance.

[0020] Optionally, the oil seal press-fitting mechanism comprises: A placing table for placing the casing; A loading assembly is used to add the oil seal to the housing; Press-in assembly, used to press the oil seal into the housing to complete the assembly; The picking component is used to grab the casing on the moving seat and place it on the placement table, or to grab the casing on the placement table and place it on the moving seat.

[0021] By adopting the above technical solution, the picking component starts to grab the housing with the assembled stator and place it on the placement table, the loading component adds the oil seal into the housing, and the pressing component starts to press the oil seal into the housing, thereby realizing the installation of the oil seal. At the same time, through the coordination of multiple structures, the oil pump is assembled with higher precision, thereby improving the assembly efficiency and quality of the oil pump.

[0022] Optionally, the feeding assembly includes: A loading tray is rotatably arranged on the frame; A rotating part, used for driving the loading tray to rotate; A plurality of feeding rods are arranged on the feeding tray in a circular array around the axis of the feeding tray, the oil seal is vertically stacked and placed on the feeding tray and sleeved on the feeding rod for positioning, a plurality of positioning rods are arranged on the feeding tray and around each feeding rod in a circular array around the axis of the feeding rod and abut against the oil seal for positioning, and the axes of the positioning rod and the feeding rod are parallel; Dust removal parts, used for removing dust from oil seals; Conveying parts are used to grab the oil seal and place it in the casing.

[0023] By adopting the above technical solution, multiple oil seals are vertically stacked and sleeved on the loading rod, and multiple positioning rods on the peripheral side are against the oil seal for positioning, and the conveying member is used to grab the oil seal and place it in the casing to complete the loading; the oil seal has a regular structure, so it can be placed by vertical stacking, and multiple loading rods on the loading tray can realize multiple places for the oil seal to be placed, which greatly reduces the space occupied by the oil seal when loading.

[0024] After the conveying part grabs an oil seal, the rotating part drives the loading plate to rotate so that the grabbing part is aligned with the next oil seal, and then the conveying part continues to grab the oil seal. Therefore, the conveying part does not need to move continuously in the vertical direction. Moreover, the rotation of the loading plate enables the oil seals in multiple locations to contact the dust removal parts for dust removal, so that the dust removal parts can be concentrated in one place, thereby improving the dust removal effect of the oil seal, thereby improving the assembly efficiency and quality of the oil pump.

[0025] Optionally, the frame is provided with an upward push assembly, and the upward push assembly includes: The upper push rod is slidably mounted on the frame along the axis of the positioning rod and is coaxially slidably penetrated on the loading tray; An upper push member, used for driving the upper push rod to move; A horizontal push piece, arranged on the top of the upper push rod; The push plate is arranged on the push member and slides in a direction close to or away from the feeding rod under the action of the push member. The push plate is used to push the oil seal at the highest point to move up to a specified position and facilitate the conveying member to grab the oil seal.

[0026] By adopting the above technical solution, multiple oil seals are stacked vertically, so that the range of downward movement of the conveying member is larger, and the oil seal is placed between multiple positioning rods and loading rods, so that the space for grabbing the oil seal is relatively narrow, which makes it easy for the conveying member to interfere with the positioning rods and the loading rods when grabbing, and even collide with them, thereby reducing the stability of the oil seal when loading, and reducing the assembly efficiency and quality of the oil pump.

[0027] The upper push piece starts to push the upper push rod upward, the upper push rod starts to push the push piece and the push plate upward, and then the push piece starts to push the push plate to move to the bottom of the oil seal at the highest point, and the loading rod pushes the push plate upward, so that the oil seal at the highest point moves up to a specified height, thereby facilitating the conveying part to grab the oil seal, and then the push plate moves back horizontally and then moves down, and then continues to push the oil seal upward, thereby reducing the probability of interference or even collision when the conveying part grabs the oil seal, and improving the assembly efficiency and quality of the oil pump.

[0028] Optionally, the detection mechanism includes: A detection seat, movably arranged on the frame; A power part, used to drive the detection seat to move; A height detector, which is arranged on the detection seat and is used to detect the height of the casing, the stator and the oil seal; The picking component is used to grab the housing located on the moving seat and move it to the height detector for detection and then move it back to the moving seat after the detection is completed.

[0029] By adopting the above technical solution, the picking component moves the casing on the movable seat to the height detector, the power part drives the detection seat and the height detector to move, and the height detector moves to detect the position of the casing, stator and oil seal. After the detection is completed, the height detector moves up and away from the casing to detect whether the stator and oil seal are pressed into place and whether the assembly accuracy is met. After the detection is completed, the picking component starts to place the casing on the movable seat, thereby improving the assembly quality and efficiency of the oil pump.

[0030] In a second aspect, the present application provides an assembly process, which adopts the following technical solution: An assembly process comprises the following steps: Loading: The staff places the stator and the casing on the moving seat, and places the moving seat on the rack for transportation; Stator hot installation: grab the casing and place it on the frame, the heating component heats the casing, grab the stator and place it on the casing, the press-fitting component starts to press the stator to complete the assembly, grab the casing and place it on the moving seat for transportation; Oil seal press-fitting: Grab the machine casing and place it on the frame, the conveyor grabs the oil seal and places it in the machine casing, presses the assembly in and starts to press the oil seal to complete the assembly, grabs the machine casing and places it on the moving seat for conveying; Height detection: Grab the casing and move it to the height detector. The height detector moves to detect the position of the casing, stator and oil seal. After the detection is completed, grab the casing and place it on the moving seat for transportation, thereby completing the assembly of the oil pump.

[0031] By adopting the above technical scheme, the staff places the stator and the casing on the mobile seat, and places the mobile seat on the frame for transportation; grabs the casing and places it on the frame, the heating component heats the casing, grabs the stator and places it on the casing, the press-fitting component starts to press the stator to complete the assembly, grabs the casing and places it on the mobile seat for transportation; grabs the casing and places it on the frame, grabs the oil seal and places it in the casing, the press-fitting component starts to press the oil seal to complete the assembly, grabs the casing and places it on the mobile seat for transportation; grabs the casing and moves it to the bottom of the height detector, the height detector moves to detect the position of the casing, stator and oil seal, and after the detection is completed, grabs the casing and places it on the mobile seat for transportation, thereby completing the assembly of the oil pump and improving the assembly quality and efficiency of the oil pump.

[0032] In summary, the present application includes at least one of the following beneficial technical effects: 1. The staff places the casing and stator on the mobile seat for transportation. The stator hot-fitting mechanism grabs the casing and heats it before pressing the stator into the casing. The oil seal pressing mechanism is used to press the oil seal into the casing. The detection mechanism is used to detect the position of the casing, stator and oil seal. Each process is standardized and assembled on a production line, making the assembly process more convenient and accurate, thereby improving the assembly quality and efficiency of the oil pump.

[0033] 2. By heating the casing to increase the inner diameter and maintaining the stator at room temperature, the stator can be easily pressed into the casing with a smaller tolerance. The casing shrinks after cooling down, so that the casing and stator can achieve the required assembly accuracy. At the same time, the convenience of the press-fitting process is improved, and the probability of wear between the two is reduced, thereby further improving the assembly quality and efficiency of the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural diagram of an assembly line; Figure 2 It is a structural schematic diagram of the stator heat-fitting mechanism in the assembly line; Figure 3 yes Figure 2 The enlarged schematic diagram of the middle A part; Figure 4 It is a structural diagram of the oil seal press-fitting mechanism in the assembly line; Figure 5 yes Figure 4 The enlarged schematic diagram of the middle B part; Figure 6 It is a structural diagram of the detection mechanism in the assembly line.

[0035] Reference numerals: 11, sliding seat; 12, pushing member; 13, moving seat; 2, stator heat-fitting mechanism; 21, press-fitting platform 1; 22, press-fitting platform 2; 23, heating component; 24, heating machine; 25, lifting member; 26, heating member; 3, grabbing component; 31, moving plate; 32, moving member; 33, grabbing member; 34, lifting member; 35, grabbing plate; 36, clamping member; 4, press-fitting component; 41, press-fitting head; 42 , press-fitting parts; 5, oil seal press-fitting mechanism; 51, placement table; 52, press-in assembly; 6, loading assembly; 61, loading tray; 63, loading rod; 64, conveying parts; 65, positioning rod; 7, push-up assembly; 71, push-up rod; 73, horizontal push part; 74, horizontal push plate; 8, detection mechanism; 81, power part; 82, height detector; 83, pick-up assembly; 9, detection seat; 91, first slide seat; 92, second slide seat. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings 1-6.

[0037] The embodiments of the present application disclose an oil pump assembly line and an assembly process.

[0038] Reference Figure 1 The oil pump assembly line includes a frame, a movable seat 13 for placing a casing and a stator, and a conveying structure for driving the movable seat 13 to move is arranged on the frame, and the conveying structure can be a conveyor belt or other; a stator heat-fitting mechanism 2, an oil seal pressing mechanism 5 and a detection mechanism 8 are arranged in sequence on the frame along the moving direction of the movable seat 13, the stator heat-fitting mechanism 2 is used to heat the casing and then grab the stator on the movable seat 13 and press it into the casing, the oil seal pressing mechanism 5 is used to grab the oil seal on the movable seat 13 and press it into the casing, and the detection mechanism 8 is used to detect whether the positions of the stator and the oil seal after pressing are correct; at the same time, two or more stator heat-fitting mechanisms 2 and oil seal pressing mechanisms 5 are arranged at intervals and are all located on one side of the moving path of the movable seat 13; a plurality of detection mechanisms 8 are also arranged at intervals and work together to achieve detection.

[0039] Reference Figure 1-3 The positioning hot-loading mechanism 2 includes a press-fitting table 1 21 and a press-fitting table 22, a heating component 23, a grabbing component 3 and a press-fitting component 4. The press-fitting table 1 21 and the press-fitting table 22 are both used to place the casing for positioning; the heating component 23 is used to heat the inside of the casing on the press-fitting table; the grabbing component 3 is used to grab the casing and the stator for transportation, so that the casing is first moved from the moving seat 13 to the press-fitting table 1 21 and then to the press-fitting table 22 and finally back to the moving seat 13, and the stator on the moving seat 13 is moved and placed on the casing on the press-fitting table 22; the press-fitting component 4 is used to press the stator into the casing to realize assembly.

[0040] A sliding seat 11 is installed horizontally on the frame, and a pusher 12 for driving the sliding seat 11 to move is provided on the frame. The pusher 12 is a cylinder or an electric push rod. The pusher 12 is fixedly installed on the frame, and the piston rod of the pusher 12 is fixedly connected to the sliding seat 11. Pressing table 1 21 and pressing table 2 22 are arranged on the sliding seat 11 at intervals along the sliding direction of the sliding seat 11. Pressing table 2 22 is fixedly installed on the upper surface of the sliding seat 11. Pressing table 1 21 is installed vertically on the sliding seat 11 and is located between pressing table 2 22 and the heating assembly 23. When the pusher 12 drives the pressing table 1 21 to align with the heating assembly 23, the pressing table 2 22 is aligned with the pressing assembly 4, or the pressing table 1 21 is aligned with the pressing assembly 4 and the pressing table 2 22 is moved to the side of the pressing assembly 4 away from the heating assembly 23.

[0041] The structures of press-fitting table 1 21 and press-fitting table 2 22 are the same and both are used to place the casing for positioning, so that the casing opening is vertically facing upward and the stator can be easily inserted through the opening. At the same time, the size and shape of press-fitting table 1 21 and press-fitting table 2 22 are designed according to the casing, so as to be used to position different casings.

[0042] The heating assembly 23 includes a heating machine 24 and a lifting member 25. The heating machine 24 is fixedly installed on the frame. A heating member 26 is fixedly installed on the heating machine 24, which extends above the press-fitting table 21 and is arranged vertically downward. The heating machine 24 is used to control the start and stop of the heating member 26, so as to achieve heating of the casing; the lifting member 25 is a cylinder or an electric push rod, and the lifting member 25 is fixedly installed on the sliding seat 11, and the piston rod of the lifting member 25 is arranged vertically upward and fixedly connected to the press-fitting table 21. The lifting member 25 is used to drive the press-fitting table 22 to move vertically.

[0043] The grabbing assembly 3 includes a moving plate 31, a moving member 32, and two grabbing members 33. The moving plate 31 is horizontally slidably installed on the frame, and the sliding direction of the moving plate 31 is perpendicular to the sliding direction of the sliding seat 11, and the moving plate 31 is in a vertical state; the moving member 32 is used to drive the moving plate 31 to move horizontally, and the moving plate 31 moves in a direction parallel to the moving seat 13 to the sliding seat 11; the moving member 32 can adopt a motor screw nut structure or an electric push rod to realize the horizontal movement of the moving plate 31.

[0044] The two grabbing members 33 have the same structure and are spaced apart along the sliding direction of the sliding seat 11. The distance between the two grabbing members 33 is the same as the distance between the press-fitting table 1 21 and the press-fitting table 2 22. When the press-fitting table 1 21 is aligned with the press-fitting assembly 4, the two grabbing members 33 are aligned with the press-fitting table 1 21 and the press-fitting table 2 22 respectively. The grabbing member 33 aligned with the press-fitting table 1 21 is used to grab the casing and the other grabbing member 33 is used to grab the stator.

[0045] The grabbing member 33 includes a lifting member 34, a grabbing plate 35, and a clamping member 36. The lifting member 34 can be a cylinder or an electric push rod. The lifting member 34 is fixedly mounted on the side wall of the moving plate 31 and the piston rod extends vertically downward to the bottom of the moving plate 31; the grabbing plate 35 is fixedly mounted on the piston rod of the lifting member 34 and is located below the moving plate 31, and the clamping member 36 is fixedly mounted on the grabbing plate 35. The clamping member 36 is used to clamp the casing or stator, and the clamping member 36 is adapted according to the shape of the casing or stator. The clamping member 36 can adopt multiple clamping plates and cylinders to achieve clamping of the casing or stator, and multiple clamping plates are arranged around the casing or stator.

[0046] The clamping member 36 clamps the casing, and then the lifting member 34 drives the grabbing plate 35 to move upward, so that the clamping member 36 and the casing move upward, and then the moving member 32 drives the moving plate 31 and the casing to move horizontally. After moving into place, the lifting member 34 drives the clamping member 36 and the casing to move downward, and finally the clamping member 36 releases the casing clamp, thereby realizing the grabbing and conveying of the casing, and the stator grabbing and conveying process is the same as the casing conveying process.

[0047] The press-fitting assembly 4 includes a press-fitting head 41 and a press-fitting part 42. The press-fitting head 41 is vertically slidably installed on the frame, and is used to press-fit the stator into the casing to complete the assembly. The specific shape and size of the press-fitting head 41 are more compatible with the shape and size of the stator; the press-fitting part 42 is a cylinder or an electric push rod, and the press-fitting part 42 is fixedly installed on the frame and the piston rod is fixedly connected to the press-fitting head 41. The press-fitting part 42 starts to drive the press-fitting head 41 to move vertically.

[0048] The staff places the casing and the stator on the movable seat 13. The movable seat 13 is provided with a positioning ring or positioning hole for positioning the casing and the stator. The movable seat 13 moves forward to the stator heat-fitting mechanism 2. At the same time, the pushing member 12 drives the press-fitting table 21 to align with the press-fitting assembly 4. The grabbing member 33 grabs the casing and places it on the press-fitting table 21. The pushing member 12 drives the press-fitting table 21 to align with the heating member 26. The press-fitting table 22 is aligned with the press-fitting assembly 4. The lifting member 25 drives the press-fitting table 21 and the casing to move up, so that the heating member 26 extends into the casing. The heating member 26 starts to heat and expand the inside of the casing. After the heating is completed, the heating member 26 turns off the heating. The lifting member 25 drives the press-fitting table 21 to descend, so that the heating member 26 moves up to the top of the casing and separates from the casing, thereby completing the heating of the casing.

[0049] The sliding seat 11 moves to drive the press-fitting table 1 21 to align with the press-fitting assembly 4, and the grabbing member 33 takes off the casing on the press-fitting table 1 21. The sliding seat 11 moves back to drive the press-fitting table 2 22 to align with the press-fitting assembly 4. The grabbing member 33 places the grabbed casing on the press-fitting table 2 22. The sliding seat 11 moves to align the press-fitting table 1 21 with the press-fitting assembly 4. At the same time, the two grabbing members 33 grab the casing and the stator respectively, and the casing is placed on the press-fitting table 1 21. At the same time, the stator is placed in the heated casing. The sliding seat 11 moves to align the press-fitting table 2 2 2 is aligned with the press-fitting assembly 4, and the heating element 26 is aligned with the press-fitting table 1 21, so the press-fitting assembly 4 is started to press-fit the stator into the casing to realize assembly, and at the same time, the lifting element 25 is started to make the heating element 26 extend into the casing for heating, and the heating time is greater than the press-fitting time of the press-fitting assembly 4, so while heating, the grabbing element 33 is started to grab the casing after the stator is assembled and place it on the moving seat 13, the moving seat 13 continues to move forward, and then the next moving seat 13 moves forward, so that it can be cyclically carried out, which greatly improves the assembly quality and efficiency of the oil pump.

[0050] Reference Figure 3 , 4The oil seal pressing mechanism 5 includes a placement table 51, a loading component 6, a pressing component 52, and a picking component. The placement table 51 is fixedly installed on the frame and is used to place the casing for positioning. The placement table 51 and the pressing table 21 have the same shape and size; the loading component 6 is used to add the oil seal to the casing, and the pressing component 52 is used to press the oil seal into the casing. The structure of the pressing component 52 is the same as that of the pressing component 4. At the same time, the size of the pressing component 52 is adapted to the size of the oil seal, so as to press the oil seal into the casing for assembly.

[0051] Reference Figure 1 , 2 4. The picking component is used to grab the housing located on the moving seat 13 and place it on the placement table 51, or to grab the housing on the placement table 51 and place it on the moving seat 13.

[0052] Reference Figure 2-4 The structure of the picking component is the same as that of the grabbing component 3, except that there is only one grabbing member 33 on the picking component 53, because only the casing needs to be grabbed.

[0053] Reference Figure 4-5 The loading assembly 6 includes a loading tray 61, a rotating part, a plurality of loading rods 63, a dust removal part and a conveying part 64. The loading tray 61 is rotatably installed on the frame through a rotating tube. The loading tray 61 is in a horizontal state and the rotation direction is in a vertical state. The rotating tube is coaxially arranged with the loading tray 61; the rotating part is a servo motor, the rotating part is fixedly installed on the frame and the output shaft is connected to the outer wall of the rotating tube through a gear set, so as to drive the loading tray 61 to rotate; a plurality of loading rods 63 are fixedly installed on the upper surface of the loading tray 61, and the loading rods 63 are in a vertical state. The plurality of loading rods 63 are arranged in a circular array around the center of the loading tray 61.

[0054] A plurality of positioning rods 65 are fixedly installed on the upper surface of the loading plate 61 and on the circumferential side of each loading rod 63. The plurality of positioning rods 65 are arranged in a circular array around the axis of the corresponding loading rod 63. The positioning rods 65 are cylindrical rods. The oil seals are vertically stacked and placed on the upper surface of the loading plate 61. The plurality of oil seal sleeves are arranged on the loading rod 63 and the outer side walls are positioned against the plurality of positioning rods 65. Therefore, the plurality of positioning rods 65 and the loading rod 63 cooperate to realize the positioning of the oil seal. This reduces the precision requirement of the positioning rod 65 and the oil seal when the positioning is only based on the loading rod 63 while ensuring the accuracy of the oil seal position. At the same time, the positioning effect of the oil seal is also improved.

[0055] The dust removal component is a dust removal fan or air pump, which is fixedly mounted on the frame and arranged corresponding to one or more loading rods 63. The loading tray 61 is provided with dust removal holes for air to pass through to remove dust from the oil seals. The dust removal component is started to remove dust from the stacked oil seals. At the same time, after the loading tray 61 rotates, it can continuously remove dust from all the oil seals on the loading tray 61.

[0056] Reference Figure 3-4 The conveying member 64 is arranged on the frame and is used to grab the oil seal and place it in the housing located on the placement table 51. The structure of the conveying member 64 is the same as that of the grabbing component 3.

[0057] Reference Figure 4-5 The frame is also provided with an upper push assembly 7, which is used to push the oil seal up to a specified position and facilitate the conveying member 64 to grab the oil seal; the upper push assembly 7 includes an upper push rod 71, an upper push member, a horizontal push member 73 and a horizontal push plate 74, the upper push rod 71 is vertically slidably installed on the frame and coaxially slidably penetrated on the rotating tube, and the top of the upper push rod 71 extends above the loading tray 61; the upper push member is an electric push rod, which is fixedly installed on the frame and fixedly connected to the upper push rod 71, and the upper push member drives the loading rod 63 to move vertically.

[0058] The push piece 73 is a cylinder or an electric push rod. The push piece 73 is fixedly mounted on the top of the loading rod 63 and the piston rod extends horizontally to one of the loading rods 63. The push plate 74 is fixedly mounted on the piston rod of the push piece 73. Two push plates 74 are arranged at intervals on both sides of the positioning rod 65 on the side closest to the push piece 73. The two push plates 74 are used to push an oil seal upward. A detector for detecting the position of the oil seal and a control box for controlling the start and stop of the push piece and the push piece 73 are provided on the frame, and the detector is electrically connected to the control box.

[0059] A specified number of oil seals are sleeved on the loading rod 63 and positioned against multiple positioning rods 65. The upper push member drives the upper push rod 71 to move upward, and then the horizontal push member 73 drives the horizontal push plate 74 to extend to the bottom of the highest oil seal. The loading member drives the upper push rod 71 to move upward, so that the oil seal at the highest point moves up to the specified position, and then the conveying member 64 starts to grab the oil seal, and the horizontal push member 73 drives the horizontal push plate 74 to move back. The loading member drives the loading rod 63 to move downward, and the loading plate 61 rotates so that the oil seal on the next loading rod 63 is aligned with the horizontal push plate 74. Then the horizontal push member 73 continues to start and pushes the oil seal at the highest point up to the specified position, thereby realizing the loading of multiple oil seals.

[0060] Reference Figure 1 , 4 The picking component grabs the casing from the moving seat 13 and transports it to the placement table 51. The conveying member 64 places the oil seal in the casing. The pressing component 52 starts to press the oil seal into the casing to realize assembly. Then the picking component continues to place the assembled casing on the moving seat 13. The moving seat 13 continues to move forward. The next moving seat 13 moves forward to a certain position, and then the assembly of the oil seal is repeated, thereby realizing the assembly of the oil seal to the casing.

[0061] Reference Figure 1 , 6The detection mechanism 8 includes a detection seat 9, a power piece 81, a height detector 82, and a picking component 83. The detection seat 9 is movably arranged on the frame. The detection seat 9 includes a first slide 91 and a second slide 92. The first slide 91 is horizontally slidably installed on the frame, and the second slide 92 is vertically slidably installed on the first slide 91. The power piece 81 is used to drive the detection seat 9 to move. The power piece 81 is provided with two electric push rods, one of which is fixedly installed on the frame and the piston rod is fixedly connected to the first slide 91, and the other power piece 81 is fixedly installed on the first slide 91 and the piston rod is fixedly connected to the second slide 92, so as to realize the movement of the first slide 91 and the second slide 92.

[0062] Reference Figure 1 , 2 6. The height detector 82 is fixedly mounted on the bottom of the second slide 92 and the detection element extends vertically downward to the bottom of the second slide 92. The height detector 82 is used to detect the heights of the casing, the stator and the oil seal. The picking component 83 is arranged on the frame and is used to grab the casing and move it to the bottom of the height detector 82 for positioning. The height detector 82 moves for detection. After the detection is completed, the picking component 83 moves the casing back and places it on the moving seat 13. The structure of the picking component 83 is the same as that of the grabbing component 3, and both grab the casing for transportation.

[0063] Before testing, standard parts are first used to test the height detector 82 and the displayed data is cleared. The picking component 83 grabs the casing and moves it under the height detector 82. The two power parts 81 start to drive the height detector 82 to move horizontally above the test object and then move vertically downward to contact the test position, so that the height data can be obtained. Then the height detector 82 moves up and then moves to other test positions for testing. This method is used to obtain the height difference between the casing, stator and oil seal, and whether this height difference meets the design requirements. If it meets the design requirements, it is a qualified product, otherwise, it is a failed product, thereby realizing the inspection of the assembly quality. If problems arise, adjustments can be made in time, thereby further improving the assembly quality of the oil pump.

[0064] The working principle of the embodiment of the present application is as follows: The staff places the casing and the stator on the movable seat 13, the movable seat 13 moves forward, the grabbing member 33 grabs the casing and places it on the pressing table 21, the pushing member 12 drives the pressing table 21 to align with the heating member 26, the lifting member 25 is started to make the heating member 26 extend into the casing for heating and expansion, after the heating is completed, the heating member 26 turns off the heating, and the lifting member 25 is started to make the heating member 26 separate from the casing, thereby completing the heating of the casing.

[0065] The sliding seat 11 moves to drive the press-fitting table 21 to align with the press-fitting assembly 4, the grabbing piece 33 takes off the casing on the press-fitting table 21, the sliding seat 11 moves back, and the grabbing piece 33 places the grabbed casing on the press-fitting table 22, the sliding seat 11 moves to align the press-fitting table 21 with the press-fitting assembly 4, and at the same time, the two grabbing pieces 33 grab the casing and the stator respectively, and the casing is placed on the press-fitting table 21, and at the same time, the stator is placed in the heated casing, the sliding seat 11 moves to align the press-fitting table 22 with the press-fitting assembly 4, and the heating piece 26 is aligned with the press-fitting table 21, so that the press-fitting assembly 4 starts to press the stator into the casing to realize assembly, and at the same time, the lifting piece 25 starts to extend the heating piece 26 into the casing for heating, and the grabbing piece 33 starts to grab the casing and place it on the moving seat 13, so that the cycle can be carried out, which greatly improves the assembly quality and efficiency of the oil pump.

[0066] The oil seal sleeve is pre-installed on the loading rod 63 and rests on multiple positioning rods 65 for positioning. The picking assembly grabs the casing and places it on the placement table 51. At the same time, the upper push rod 71 moves up, and the push plate 74 extends to the bottom of the highest oil seal. The upper push rod 71 moves up so that the oil seal at the highest point moves up to the specified position. Then the conveying member 64 starts to grab the oil seal and place it in the casing on the placement table 51. The pressing assembly 52 starts to press the oil seal to achieve assembly. The picking assembly grabs the assembled casing and places it on the moving seat 13, thereby achieving the assembly of the oil seal to the casing.

[0067] The picking component 83 grabs the casing and moves it to the bottom of the height detector 82. The two power parts 81 start to drive the height detector 82 to move horizontally to the top of the detection object and then move vertically downward to contact the detection position, so as to obtain the height difference between the casing, stator and oil seal, thereby realizing the detection of the assembly quality of the oil pump. If problems occur, adjustments can be made in time, thereby improving the assembly quality and efficiency of the oil pump.

[0068] The embodiment of the present application discloses an oil pump assembly process.

[0069] Reference Figure 1 , the oil pump assembly process includes the following steps: Loading: The staff places the stator and the casing on the moving seat 13, and places the moving seat 13 on the frame for transportation; Reference Figure 2 , stator hot assembly: grab the casing and place it on the frame, the heating component 23 heats the casing, grab the stator and place it on the casing, the press-fitting component 4 starts to press-fit the stator to complete the assembly, grab the casing and place it on the moving seat 13 for transportation; Reference Figure 4, Oil seal press-fitting: grab the casing and place it on the frame, the conveying member 64 grabs the oil seal and places it in the casing, the pressing assembly 52 starts to press-fit the oil seal to complete the assembly, and the casing is grabbed and placed on the moving seat 13 for conveying; Reference Figure 6 , Height detection: grab the casing and move it under the height detector 82. The height detector 82 moves to detect the position of the casing, stator and oil seal. After the detection is completed, the casing is grabbed and placed on the moving seat 13 for transportation, thereby completing the assembly of the oil pump and improving the assembly quality and efficiency of the oil pump.

[0070] The working principle of the embodiment of the present application is as follows: The staff places the stator and the casing on the movable seat 13, and places the movable seat 13 on the frame for transportation; grabs the casing and places it on the frame, the heating component 23 heats the casing, grabs the stator and places it on the casing, the press-fitting component 4 starts to press-fit the stator to complete the assembly, grabs the casing and places it on the movable seat 13 for transportation; grabs the casing and places it on the frame, grabs the oil seal and places it in the casing, the press-fitting component 52 starts to press-fit the oil seal to complete the assembly, grabs the casing and places it on the movable seat 13 for transportation; grabs the casing and moves it to the bottom of the height detector 82, the height detector 82 moves to detect the positions of the casing, stator and oil seal, and after the detection is completed, grabs the casing and places it on the movable seat 13 for transportation, thereby completing the assembly of the oil pump and improving the assembly quality and efficiency of the oil pump.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oil pump assembly line, characterized in that: The invention comprises a frame, a movable seat (13) for placing a casing and a stator and moving on the frame, wherein a stator heat-fitting mechanism (2), an oil seal pressing mechanism (5) and a detection mechanism (8) are arranged on the frame in sequence along the moving direction of the movable seat (13); the stator heat-fitting mechanism (2) is used to grab the casing, heat it and then grab the stator and press it into the heated casing; the oil seal pressing mechanism (5) is used to press the oil seal into the casing; and the detection mechanism (8) is used to detect the positions of the stator and the oil seal after they are pressed.

2. The oil pump assembly line according to claim 1, characterized in that: The stator shrink-fit mechanism (2) comprises: Pressing table 1 (21) and pressing table 2 (22) are both used to place the casing for positioning; A heating assembly (23) for heating the inside of a housing located on the first pressing table (21); A gripping assembly (3) for gripping the housing and the stator for movement; The press-fitting assembly (4) is used to press-fit the stator into a casing located on the second press-fitting platform (22). The grabbing assembly (3) first grabs the casing and places it on the first press-fitting platform (21) and the second press-fitting platform (22) in sequence, and then grabs the stator and places it on the casing. The press-fitting assembly (4) is started to press-fit the stator, and the grabbing assembly (3) then grabs the casing and places it on the movable seat (13).

3. The oil pump assembly line according to claim 2, characterized in that: The first pressing table (21) is vertically slidably arranged on a frame, and the heating component (23) comprises: A heating machine (24), which is arranged on a frame and is provided with a heating element (26) for heating; The lifting member (25) is arranged on the frame and is used to drive the pressing table (21) to move. The pressing table (21) moves upward and allows the heating member (26) to extend into the casing for heating. After the heating is completed, the pressing table (21) moves downward and allows the casing to move below the heating member (26).

4. The oil pump assembly line according to claim 2, characterized in that: The grabbing component (3) comprises: A movable plate (31) is slidably arranged on the frame; A moving member (32) for driving the moving plate (31) to move; Two grabbing members (33) are arranged on the movable seat (13) and are used to grab and transport the casing and the stator respectively.

5. The oil pump assembly line according to claim 2, characterized in that: A sliding seat (11) is horizontally slidably mounted on the frame, the pressing table one (21) and the pressing table two (22) are arranged on the sliding seat (11), and a pushing member (12) is arranged on the frame for pushing the sliding seat (11) to move, the pushing member (12) starts the pressing table one (21) to align with the heating component (23) and the pressing table two (22) to align with the pressing component (4), or, causes the pressing table one (21) to align with the pressing component (4).

6. According to the oil pump assembly line described in claim 1, it is characterized by: The oil seal pressing mechanism (5) comprises: A placement table (51) for placing the casing; A loading assembly (6) for adding an oil seal into the housing; A press-fit assembly (52) is used to press-fit the oil seal into the casing to complete the assembly; The picking component is used to grab the casing located on the movable seat (13) and place it on the placement table (51), or to grab the casing located on the placement table (51) and place it on the movable seat (13).

7. The oil pump assembly line according to claim 6, characterized in that: The feeding assembly (6) comprises: A loading tray (61) is rotatably mounted on the frame; A rotating member, used for driving the loading plate (61) to rotate; A plurality of feeding rods (63) are arranged on the feeding tray (61) in a circular array around the axis of the feeding tray (61); the oil seal is vertically stacked and placed on the feeding tray (61) and sleeved on the feeding rods (63) for positioning; a plurality of positioning rods (65) are arranged on the feeding tray (61) and on the circumference of each feeding rod (63) and are abutted against the oil seal for positioning; the axes of the positioning rods (65) and the feeding rods (63) are parallel; Dust removal parts, used for removing dust from oil seals; The conveying member (64) is used to grab the oil seal and place it in the casing.

8. The oil pump assembly line according to claim 7, characterized in that: The frame is provided with an upward push assembly (7), and the upward push assembly (7) comprises: An upper push rod (71) is slidably mounted on the frame along the axis of the positioning rod (65) and is coaxially slidably penetrated on the loading plate (61); An upper push member, used for driving the upper push rod (71) to move; A horizontal push member (73) is arranged on the top of the upper push rod (71); The push plate (74) is arranged on the push member (73) and slides in a direction approaching or moving away from the loading rod (63) under the action of the push member (73). The push plate (74) is used to push the oil seal at the highest point to move upward to a specified position and facilitate the conveying member (64) to grab the oil seal.

9. The oil pump assembly line according to claim 1, characterized in that: The detection mechanism (8) comprises: A detection seat (9) movably arranged on the frame; A power member (81) for driving the detection seat (9) to move; A height detector (82) is disposed on the detection seat (9) and is used to detect the heights of the casing, the stator and the oil seal; The picking component (83) is used to grab the housing located on the movable seat (13) and move it to the height detector (82) for detection and then move it back to the movable seat (13) after the detection is completed.

10. An assembly process using the assembly line according to any one of claims 1 to 9, characterized in that: The following steps are involved: Loading: The staff places the stator and the casing on the moving seat (13), and places the moving seat (13) on the frame for transportation; Stator hot assembly: grab the casing and place it on the frame, the heating component (23) heats the casing, grab the stator and place it on the casing, the press-fitting component (4) starts to press-fit the stator to complete the assembly, grab the casing and place it on the moving seat (13) for transportation; Oil seal press-fitting: grab the machine casing and place it on the frame, the conveying member (64) grabs the oil seal and places it in the machine casing, the pressing assembly (52) starts to press-fit the oil seal to complete the assembly, and the machine casing is grabbed and placed on the moving seat (13) for conveying; Height detection: The casing is grabbed and moved to the height detector (82). The height detector (82) is moved to detect the positions of the casing, stator and oil seal. After the detection is completed, the casing is grabbed and placed on the moving seat (13) for transportation, thereby completing the assembly of the oil pump.

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